drivers/net/ethernet/neterion/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/bitops.h>
  47 #include <linux/if_vlan.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/pci.h>
  50 #include <linux/slab.h>
  51 #include <linux/tcp.h>
  52 #include <net/ip.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/firmware.h>
  56 #include <linux/net_tstamp.h>
  57 #include <linux/prefetch.h>
  58 #include <linux/module.h>
  59 #include "vxge-main.h"
  60 #include "vxge-reg.h"
  61
  62 MODULE_LICENSE("Dual BSD/GPL");
  63 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  64         "Virtualized Server Adapter");
  65
  66 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  67         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  68         PCI_ANY_ID},
  69         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  70         PCI_ANY_ID},
  71         {0}
  72 };
  73
  74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  75
  76 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  77 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  78 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  80 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  81 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  82
  83 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  84                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  85 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  86         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  87 module_param_array(bw_percentage, uint, NULL, 0);
  88
  89 static struct vxge_drv_config *driver_config;
  90 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
  91
  92 static inline int is_vxge_card_up(struct vxgedev *vdev)
  93 {
  94         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  95 }
  96
  97 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  98 {
  99         struct sk_buff **skb_ptr = NULL;
 100         struct sk_buff **temp;
 101 #define NR_SKB_COMPLETED 128
 102         struct sk_buff *completed[NR_SKB_COMPLETED];
 103         int more;
 104
 105         do {
 106                 more = 0;
 107                 skb_ptr = completed;
 108
 109                 if (__netif_tx_trylock(fifo->txq)) {
 110                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 111                                                 NR_SKB_COMPLETED, &more);
 112                         __netif_tx_unlock(fifo->txq);
 113                 }
 114
 115                 /* free SKBs */
 116                 for (temp = completed; temp != skb_ptr; temp++)
 117                         dev_kfree_skb_irq(*temp);
 118         } while (more);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 122 {
 123         int i;
 124
 125         /* Complete all transmits */
 126         for (i = 0; i < vdev->no_of_vpath; i++)
 127                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 128 }
 129
 130 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 131 {
 132         int i;
 133         struct vxge_ring *ring;
 134
 135         /* Complete all receives*/
 136         for (i = 0; i < vdev->no_of_vpath; i++) {
 137                 ring = &vdev->vpaths[i].ring;
 138                 vxge_hw_vpath_poll_rx(ring->handle);
 139         }
 140 }
 141
 142 /*
 143  * vxge_callback_link_up
 144  *
 145  * This function is called during interrupt context to notify link up state
 146  * change.
 147  */
 148 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 149 {
 150         struct net_device *dev = hldev->ndev;
 151         struct vxgedev *vdev = netdev_priv(dev);
 152
 153         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 154                 vdev->ndev->name, __func__, __LINE__);
 155         netdev_notice(vdev->ndev, "Link Up\n");
 156         vdev->stats.link_up++;
 157
 158         netif_carrier_on(vdev->ndev);
 159         netif_tx_wake_all_queues(vdev->ndev);
 160
 161         vxge_debug_entryexit(VXGE_TRACE,
 162                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 163 }
 164
 165 /*
 166  * vxge_callback_link_down
 167  *
 168  * This function is called during interrupt context to notify link down state
 169  * change.
 170  */
 171 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 172 {
 173         struct net_device *dev = hldev->ndev;
 174         struct vxgedev *vdev = netdev_priv(dev);
 175
 176         vxge_debug_entryexit(VXGE_TRACE,
 177                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 178         netdev_notice(vdev->ndev, "Link Down\n");
 179
 180         vdev->stats.link_down++;
 181         netif_carrier_off(vdev->ndev);
 182         netif_tx_stop_all_queues(vdev->ndev);
 183
 184         vxge_debug_entryexit(VXGE_TRACE,
 185                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 186 }
 187
 188 /*
 189  * vxge_rx_alloc
 190  *
 191  * Allocate SKB.
 192  */
 193 static struct sk_buff *
 194 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 195 {
 196         struct net_device    *dev;
 197         struct sk_buff       *skb;
 198         struct vxge_rx_priv *rx_priv;
 199
 200         dev = ring->ndev;
 201         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 202                 ring->ndev->name, __func__, __LINE__);
 203
 204         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 205
 206         /* try to allocate skb first. this one may fail */
 207         skb = netdev_alloc_skb(dev, skb_size +
 208         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 209         if (skb == NULL) {
 210                 vxge_debug_mem(VXGE_ERR,
 211                         "%s: out of memory to allocate SKB", dev->name);
 212                 ring->stats.skb_alloc_fail++;
 213                 return NULL;
 214         }
 215
 216         vxge_debug_mem(VXGE_TRACE,
 217                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 218                 __func__, __LINE__, skb);
 219
 220         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 221
 222         rx_priv->skb = skb;
 223         rx_priv->skb_data = NULL;
 224         rx_priv->data_size = skb_size;
 225         vxge_debug_entryexit(VXGE_TRACE,
 226                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 227
 228         return skb;
 229 }
 230
 231 /*
 232  * vxge_rx_map
 233  */
 234 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 235 {
 236         struct vxge_rx_priv *rx_priv;
 237         dma_addr_t dma_addr;
 238
 239         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 240                 ring->ndev->name, __func__, __LINE__);
 241         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 242
 243         rx_priv->skb_data = rx_priv->skb->data;
 244         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 245                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 246
 247         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 248                 ring->stats.pci_map_fail++;
 249                 return -EIO;
 250         }
 251         vxge_debug_mem(VXGE_TRACE,
 252                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 253                 ring->ndev->name, __func__, __LINE__,
 254                 (unsigned long long)dma_addr);
 255         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 256
 257         rx_priv->data_dma = dma_addr;
 258         vxge_debug_entryexit(VXGE_TRACE,
 259                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * vxge_rx_initial_replenish
 266  * Allocation of RxD as an initial replenish procedure.
 267  */
 268 static enum vxge_hw_status
 269 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 270 {
 271         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 272         struct vxge_rx_priv *rx_priv;
 273
 274         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 275                 ring->ndev->name, __func__, __LINE__);
 276         if (vxge_rx_alloc(dtrh, ring,
 277                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 278                 return VXGE_HW_FAIL;
 279
 280         if (vxge_rx_map(dtrh, ring)) {
 281                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282                 dev_kfree_skb(rx_priv->skb);
 283
 284                 return VXGE_HW_FAIL;
 285         }
 286         vxge_debug_entryexit(VXGE_TRACE,
 287                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 288
 289         return VXGE_HW_OK;
 290 }
 291
 292 static inline void
 293 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 294                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 295 {
 296
 297         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 298                         ring->ndev->name, __func__, __LINE__);
 299         skb_record_rx_queue(skb, ring->driver_id);
 300         skb->protocol = eth_type_trans(skb, ring->ndev);
 301
 302         u64_stats_update_begin(&ring->stats.syncp);
 303         ring->stats.rx_frms++;
 304         ring->stats.rx_bytes += pkt_length;
 305
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ring->stats.rx_mcast++;
 308         u64_stats_update_end(&ring->stats.syncp);
 309
 310         vxge_debug_rx(VXGE_TRACE,
 311                 "%s: %s:%d  skb protocol = %d",
 312                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 313
 314         if (ext_info->vlan &&
 315             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 316                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 317         napi_gro_receive(ring->napi_p, skb);
 318
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321 }
 322
 323 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 324                                     struct vxge_rx_priv *rx_priv)
 325 {
 326         pci_dma_sync_single_for_device(ring->pdev,
 327                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 328
 329         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 330         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 331 }
 332
 333 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 334                              void *post_dtr, struct __vxge_hw_ring *ringh)
 335 {
 336         int dtr_count = *dtr_cnt;
 337         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 338                 if (*first_dtr)
 339                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 340                 *first_dtr = post_dtr;
 341         } else
 342                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 343         dtr_count++;
 344         *dtr_cnt = dtr_count;
 345 }
 346
 347 /*
 348  * vxge_rx_1b_compl
 349  *
 350  * If the interrupt is because of a received frame or if the receive ring
 351  * contains fresh as yet un-processed frames, this function is called.
 352  */
 353 static enum vxge_hw_status
 354 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 355                  u8 t_code, void *userdata)
 356 {
 357         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 358         struct net_device *dev = ring->ndev;
 359         unsigned int dma_sizes;
 360         void *first_dtr = NULL;
 361         int dtr_cnt = 0;
 362         int data_size;
 363         dma_addr_t data_dma;
 364         int pkt_length;
 365         struct sk_buff *skb;
 366         struct vxge_rx_priv *rx_priv;
 367         struct vxge_hw_ring_rxd_info ext_info;
 368         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 369                 ring->ndev->name, __func__, __LINE__);
 370
 371         do {
 372                 prefetch((char *)dtr + L1_CACHE_BYTES);
 373                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 374                 skb = rx_priv->skb;
 375                 data_size = rx_priv->data_size;
 376                 data_dma = rx_priv->data_dma;
 377                 prefetch(rx_priv->skb_data);
 378
 379                 vxge_debug_rx(VXGE_TRACE,
 380                         "%s: %s:%d  skb = 0x%p",
 381                         ring->ndev->name, __func__, __LINE__, skb);
 382
 383                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 384                 pkt_length = dma_sizes;
 385
 386                 pkt_length -= ETH_FCS_LEN;
 387
 388                 vxge_debug_rx(VXGE_TRACE,
 389                         "%s: %s:%d  Packet Length = %d",
 390                         ring->ndev->name, __func__, __LINE__, pkt_length);
 391
 392                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 393
 394                 /* check skb validity */
 395                 vxge_assert(skb);
 396
 397                 prefetch((char *)skb + L1_CACHE_BYTES);
 398                 if (unlikely(t_code)) {
 399                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 400                                 VXGE_HW_OK) {
 401
 402                                 ring->stats.rx_errors++;
 403                                 vxge_debug_rx(VXGE_TRACE,
 404                                         "%s: %s :%d Rx T_code is %d",
 405                                         ring->ndev->name, __func__,
 406                                         __LINE__, t_code);
 407
 408                                 /* If the t_code is not supported and if the
 409                                  * t_code is other than 0x5 (unparseable packet
 410                                  * such as unknown UPV6 header), Drop it !!!
 411                                  */
 412                                 vxge_re_pre_post(dtr, ring, rx_priv);
 413
 414                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 415                                 ring->stats.rx_dropped++;
 416                                 continue;
 417                         }
 418                 }
 419
 420                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 421                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 422                                 if (!vxge_rx_map(dtr, ring)) {
 423                                         skb_put(skb, pkt_length);
 424
 425                                         pci_unmap_single(ring->pdev, data_dma,
 426                                                 data_size, PCI_DMA_FROMDEVICE);
 427
 428                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 429                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 430                                                 ringh);
 431                                 } else {
 432                                         dev_kfree_skb(rx_priv->skb);
 433                                         rx_priv->skb = skb;
 434                                         rx_priv->data_size = data_size;
 435                                         vxge_re_pre_post(dtr, ring, rx_priv);
 436
 437                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 438                                                 ringh);
 439                                         ring->stats.rx_dropped++;
 440                                         break;
 441                                 }
 442                         } else {
 443                                 vxge_re_pre_post(dtr, ring, rx_priv);
 444
 445                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 446                                 ring->stats.rx_dropped++;
 447                                 break;
 448                         }
 449                 } else {
 450                         struct sk_buff *skb_up;
 451
 452                         skb_up = netdev_alloc_skb(dev, pkt_length +
 453                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 454                         if (skb_up != NULL) {
 455                                 skb_reserve(skb_up,
 456                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 457
 458                                 pci_dma_sync_single_for_cpu(ring->pdev,
 459                                         data_dma, data_size,
 460                                         PCI_DMA_FROMDEVICE);
 461
 462                                 vxge_debug_mem(VXGE_TRACE,
 463                                         "%s: %s:%d  skb_up = %p",
 464                                         ring->ndev->name, __func__,
 465                                         __LINE__, skb);
 466                                 memcpy(skb_up->data, skb->data, pkt_length);
 467
 468                                 vxge_re_pre_post(dtr, ring, rx_priv);
 469
 470                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 471                                         ringh);
 472                                 /* will netif_rx small SKB instead */
 473                                 skb = skb_up;
 474                                 skb_put(skb, pkt_length);
 475                         } else {
 476                                 vxge_re_pre_post(dtr, ring, rx_priv);
 477
 478                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 479                                 vxge_debug_rx(VXGE_ERR,
 480                                         "%s: vxge_rx_1b_compl: out of "
 481                                         "memory", dev->name);
 482                                 ring->stats.skb_alloc_fail++;
 483                                 break;
 484                         }
 485                 }
 486
 487                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 488                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 489                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 490                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 491                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 492                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 493                 else
 494                         skb_checksum_none_assert(skb);
 495
 496
 497                 if (ring->rx_hwts) {
 498                         struct skb_shared_hwtstamps *skb_hwts;
 499                         u32 ns = *(u32 *)(skb->head + pkt_length);
 500
 501                         skb_hwts = skb_hwtstamps(skb);
 502                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 503                         skb_hwts->syststamp.tv64 = 0;
 504                 }
 505
 506                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 507                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 508                  * if rss is disabled/enabled, so key off of that.
 509                  */
 510                 if (ext_info.rth_value)
 511                         skb_set_hash(skb, ext_info.rth_value,
 512                                      PKT_HASH_TYPE_L3);
 513
 514                 vxge_rx_complete(ring, skb, ext_info.vlan,
 515                         pkt_length, &ext_info);
 516
 517                 ring->budget--;
 518                 ring->pkts_processed++;
 519                 if (!ring->budget)
 520                         break;
 521
 522         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 523                 &t_code) == VXGE_HW_OK);
 524
 525         if (first_dtr)
 526                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 527
 528         vxge_debug_entryexit(VXGE_TRACE,
 529                                 "%s:%d  Exiting...",
 530                                 __func__, __LINE__);
 531         return VXGE_HW_OK;
 532 }
 533
 534 /*
 535  * vxge_xmit_compl
 536  *
 537  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 538  * this function is called. It identifies the last TxD whose buffer was
 539  * freed and frees all skbs whose data have already DMA'ed into the NICs
 540  * internal memory.
 541  */
 542 static enum vxge_hw_status
 543 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 544                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 545                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 546 {
 547         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 548         struct sk_buff *skb, **done_skb = *skb_ptr;
 549         int pkt_cnt = 0;
 550
 551         vxge_debug_entryexit(VXGE_TRACE,
 552                 "%s:%d Entered....", __func__, __LINE__);
 553
 554         do {
 555                 int frg_cnt;
 556                 skb_frag_t *frag;
 557                 int i = 0, j;
 558                 struct vxge_tx_priv *txd_priv =
 559                         vxge_hw_fifo_txdl_private_get(dtr);
 560
 561                 skb = txd_priv->skb;
 562                 frg_cnt = skb_shinfo(skb)->nr_frags;
 563                 frag = &skb_shinfo(skb)->frags[0];
 564
 565                 vxge_debug_tx(VXGE_TRACE,
 566                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 567                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 568                                 __LINE__, fifo_hw, dtr, t_code);
 569                 /* check skb validity */
 570                 vxge_assert(skb);
 571                 vxge_debug_tx(VXGE_TRACE,
 572                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 573                         fifo->ndev->name, __func__, __LINE__,
 574                         skb, txd_priv, frg_cnt);
 575                 if (unlikely(t_code)) {
 576                         fifo->stats.tx_errors++;
 577                         vxge_debug_tx(VXGE_ERR,
 578                                 "%s: tx: dtr %p completed due to "
 579                                 "error t_code %01x", fifo->ndev->name,
 580                                 dtr, t_code);
 581                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 582                 }
 583
 584                 /*  for unfragmented skb */
 585                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 586                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 587
 588                 for (j = 0; j < frg_cnt; j++) {
 589                         pci_unmap_page(fifo->pdev,
 590                                         txd_priv->dma_buffers[i++],
 591                                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 592                         frag += 1;
 593                 }
 594
 595                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 596
 597                 /* Updating the statistics block */
 598                 u64_stats_update_begin(&fifo->stats.syncp);
 599                 fifo->stats.tx_frms++;
 600                 fifo->stats.tx_bytes += skb->len;
 601                 u64_stats_update_end(&fifo->stats.syncp);
 602
 603                 *done_skb++ = skb;
 604
 605                 if (--nr_skb <= 0) {
 606                         *more = 1;
 607                         break;
 608                 }
 609
 610                 pkt_cnt++;
 611                 if (pkt_cnt > fifo->indicate_max_pkts)
 612                         break;
 613
 614         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 615                                 &dtr, &t_code) == VXGE_HW_OK);
 616
 617         *skb_ptr = done_skb;
 618         if (netif_tx_queue_stopped(fifo->txq))
 619                 netif_tx_wake_queue(fifo->txq);
 620
 621         vxge_debug_entryexit(VXGE_TRACE,
 622                                 "%s: %s:%d  Exiting...",
 623                                 fifo->ndev->name, __func__, __LINE__);
 624         return VXGE_HW_OK;
 625 }
 626
 627 /* select a vpath to transmit the packet */
 628 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 629 {
 630         u16 queue_len, counter = 0;
 631         if (skb->protocol == htons(ETH_P_IP)) {
 632                 struct iphdr *ip;
 633                 struct tcphdr *th;
 634
 635                 ip = ip_hdr(skb);
 636
 637                 if (!ip_is_fragment(ip)) {
 638                         th = (struct tcphdr *)(((unsigned char *)ip) +
 639                                         ip->ihl*4);
 640
 641                         queue_len = vdev->no_of_vpath;
 642                         counter = (ntohs(th->source) +
 643                                 ntohs(th->dest)) &
 644                                 vdev->vpath_selector[queue_len - 1];
 645                         if (counter >= queue_len)
 646                                 counter = queue_len - 1;
 647                 }
 648         }
 649         return counter;
 650 }
 651
 652 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 653         struct vxge_vpath *vpath, u64 del_mac)
 654 {
 655         struct list_head *entry, *next;
 656         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 657                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 658                         return TRUE;
 659         }
 660         return FALSE;
 661 }
 662
 663 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 664 {
 665         struct vxge_mac_addrs *new_mac_entry;
 666         u8 *mac_address = NULL;
 667
 668         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 669                 return TRUE;
 670
 671         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 672         if (!new_mac_entry) {
 673                 vxge_debug_mem(VXGE_ERR,
 674                         "%s: memory allocation failed",
 675                         VXGE_DRIVER_NAME);
 676                 return FALSE;
 677         }
 678
 679         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 680
 681         /* Copy the new mac address to the list */
 682         mac_address = (u8 *)&new_mac_entry->macaddr;
 683         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 684
 685         new_mac_entry->state = mac->state;
 686         vpath->mac_addr_cnt++;
 687
 688         if (is_multicast_ether_addr(mac->macaddr))
 689                 vpath->mcast_addr_cnt++;
 690
 691         return TRUE;
 692 }
 693
 694 /* Add a mac address to DA table */
 695 static enum vxge_hw_status
 696 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 697 {
 698         enum vxge_hw_status status = VXGE_HW_OK;
 699         struct vxge_vpath *vpath;
 700         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 701
 702         if (is_multicast_ether_addr(mac->macaddr))
 703                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 704         else
 705                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 706
 707         vpath = &vdev->vpaths[mac->vpath_no];
 708         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 709                                                 mac->macmask, duplicate_mode);
 710         if (status != VXGE_HW_OK) {
 711                 vxge_debug_init(VXGE_ERR,
 712                         "DA config add entry failed for vpath:%d",
 713                         vpath->device_id);
 714         } else
 715                 if (FALSE == vxge_mac_list_add(vpath, mac))
 716                         status = -EPERM;
 717
 718         return status;
 719 }
 720
 721 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 722 {
 723         struct macInfo mac_info;
 724         u8 *mac_address = NULL;
 725         u64 mac_addr = 0, vpath_vector = 0;
 726         int vpath_idx = 0;
 727         enum vxge_hw_status status = VXGE_HW_OK;
 728         struct vxge_vpath *vpath = NULL;
 729
 730         mac_address = (u8 *)&mac_addr;
 731         memcpy(mac_address, mac_header, ETH_ALEN);
 732
 733         /* Is this mac address already in the list? */
 734         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 735                 vpath = &vdev->vpaths[vpath_idx];
 736                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 737                         return vpath_idx;
 738         }
 739
 740         memset(&mac_info, 0, sizeof(struct macInfo));
 741         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 742
 743         /* Any vpath has room to add mac address to its da table? */
 744         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 745                 vpath = &vdev->vpaths[vpath_idx];
 746                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 747                         /* Add this mac address to this vpath */
 748                         mac_info.vpath_no = vpath_idx;
 749                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 750                         status = vxge_add_mac_addr(vdev, &mac_info);
 751                         if (status != VXGE_HW_OK)
 752                                 return -EPERM;
 753                         return vpath_idx;
 754                 }
 755         }
 756
 757         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 758         vpath_idx = 0;
 759         mac_info.vpath_no = vpath_idx;
 760         /* Is the first vpath already selected as catch-basin ? */
 761         vpath = &vdev->vpaths[vpath_idx];
 762         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 763                 /* Add this mac address to this vpath */
 764                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 765                         return -EPERM;
 766                 return vpath_idx;
 767         }
 768
 769         /* Select first vpath as catch-basin */
 770         vpath_vector = vxge_mBIT(vpath->device_id);
 771         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 772                                 vxge_hw_mgmt_reg_type_mrpcim,
 773                                 0,
 774                                 (ulong)offsetof(
 775                                         struct vxge_hw_mrpcim_reg,
 776                                         rts_mgr_cbasin_cfg),
 777                                 vpath_vector);
 778         if (status != VXGE_HW_OK) {
 779                 vxge_debug_tx(VXGE_ERR,
 780                         "%s: Unable to set the vpath-%d in catch-basin mode",
 781                         VXGE_DRIVER_NAME, vpath->device_id);
 782                 return -EPERM;
 783         }
 784
 785         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 786                 return -EPERM;
 787
 788         return vpath_idx;
 789 }
 790
 791 /**
 792  * vxge_xmit
 793  * @skb : the socket buffer containing the Tx data.
 794  * @dev : device pointer.
 795  *
 796  * This function is the Tx entry point of the driver. Neterion NIC supports
 797  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 798 */
 799 static netdev_tx_t
 800 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 801 {
 802         struct vxge_fifo *fifo = NULL;
 803         void *dtr_priv;
 804         void *dtr = NULL;
 805         struct vxgedev *vdev = NULL;
 806         enum vxge_hw_status status;
 807         int frg_cnt, first_frg_len;
 808         skb_frag_t *frag;
 809         int i = 0, j = 0, avail;
 810         u64 dma_pointer;
 811         struct vxge_tx_priv *txdl_priv = NULL;
 812         struct __vxge_hw_fifo *fifo_hw;
 813         int offload_type;
 814         int vpath_no = 0;
 815
 816         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 817                         dev->name, __func__, __LINE__);
 818
 819         /* A buffer with no data will be dropped */
 820         if (unlikely(skb->len <= 0)) {
 821                 vxge_debug_tx(VXGE_ERR,
 822                         "%s: Buffer has no data..", dev->name);
 823                 dev_kfree_skb(skb);
 824                 return NETDEV_TX_OK;
 825         }
 826
 827         vdev = netdev_priv(dev);
 828
 829         if (unlikely(!is_vxge_card_up(vdev))) {
 830                 vxge_debug_tx(VXGE_ERR,
 831                         "%s: vdev not initialized", dev->name);
 832                 dev_kfree_skb(skb);
 833                 return NETDEV_TX_OK;
 834         }
 835
 836         if (vdev->config.addr_learn_en) {
 837                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 838                 if (vpath_no == -EPERM) {
 839                         vxge_debug_tx(VXGE_ERR,
 840                                 "%s: Failed to store the mac address",
 841                                 dev->name);
 842                         dev_kfree_skb(skb);
 843                         return NETDEV_TX_OK;
 844                 }
 845         }
 846
 847         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 848                 vpath_no = skb_get_queue_mapping(skb);
 849         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 850                 vpath_no = vxge_get_vpath_no(vdev, skb);
 851
 852         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 853
 854         if (vpath_no >= vdev->no_of_vpath)
 855                 vpath_no = 0;
 856
 857         fifo = &vdev->vpaths[vpath_no].fifo;
 858         fifo_hw = fifo->handle;
 859
 860         if (netif_tx_queue_stopped(fifo->txq))
 861                 return NETDEV_TX_BUSY;
 862
 863         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 864         if (avail == 0) {
 865                 vxge_debug_tx(VXGE_ERR,
 866                         "%s: No free TXDs available", dev->name);
 867                 fifo->stats.txd_not_free++;
 868                 goto _exit0;
 869         }
 870
 871         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 872          * completion will resume the queue.
 873          */
 874         if (avail == 1)
 875                 netif_tx_stop_queue(fifo->txq);
 876
 877         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 878         if (unlikely(status != VXGE_HW_OK)) {
 879                 vxge_debug_tx(VXGE_ERR,
 880                    "%s: Out of descriptors .", dev->name);
 881                 fifo->stats.txd_out_of_desc++;
 882                 goto _exit0;
 883         }
 884
 885         vxge_debug_tx(VXGE_TRACE,
 886                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 887                 dev->name, __func__, __LINE__,
 888                 fifo_hw, dtr, dtr_priv);
 889
 890         if (vlan_tx_tag_present(skb)) {
 891                 u16 vlan_tag = vlan_tx_tag_get(skb);
 892                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 893         }
 894
 895         first_frg_len = skb_headlen(skb);
 896
 897         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 898                                 PCI_DMA_TODEVICE);
 899
 900         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 901                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 902                 fifo->stats.pci_map_fail++;
 903                 goto _exit0;
 904         }
 905
 906         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 907         txdl_priv->skb = skb;
 908         txdl_priv->dma_buffers[j] = dma_pointer;
 909
 910         frg_cnt = skb_shinfo(skb)->nr_frags;
 911         vxge_debug_tx(VXGE_TRACE,
 912                         "%s: %s:%d skb = %p txdl_priv = %p "
 913                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 914                         __func__, __LINE__, skb, txdl_priv,
 915                         frg_cnt, (unsigned long long)dma_pointer);
 916
 917         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 918                 first_frg_len);
 919
 920         frag = &skb_shinfo(skb)->frags[0];
 921         for (i = 0; i < frg_cnt; i++) {
 922                 /* ignore 0 length fragment */
 923                 if (!skb_frag_size(frag))
 924                         continue;
 925
 926                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 927                                                     0, skb_frag_size(frag),
 928                                                     DMA_TO_DEVICE);
 929
 930                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 931                         goto _exit2;
 932                 vxge_debug_tx(VXGE_TRACE,
 933                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 934                                 dev->name, __func__, __LINE__, i,
 935                                 (unsigned long long)dma_pointer);
 936
 937                 txdl_priv->dma_buffers[j] = dma_pointer;
 938                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 939                                         skb_frag_size(frag));
 940                 frag += 1;
 941         }
 942
 943         offload_type = vxge_offload_type(skb);
 944
 945         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 946                 int mss = vxge_tcp_mss(skb);
 947                 if (mss) {
 948                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 949                                 dev->name, __func__, __LINE__, mss);
 950                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 951                 } else {
 952                         vxge_assert(skb->len <=
 953                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 954                         vxge_assert(0);
 955                         goto _exit1;
 956                 }
 957         }
 958
 959         if (skb->ip_summed == CHECKSUM_PARTIAL)
 960                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 961                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 962                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 963                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 964
 965         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 966
 967         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 968                 dev->name, __func__, __LINE__);
 969         return NETDEV_TX_OK;
 970
 971 _exit2:
 972         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 973 _exit1:
 974         j = 0;
 975         frag = &skb_shinfo(skb)->frags[0];
 976
 977         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 978                         skb_headlen(skb), PCI_DMA_TODEVICE);
 979
 980         for (; j < i; j++) {
 981                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 982                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 983                 frag += 1;
 984         }
 985
 986         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 987 _exit0:
 988         netif_tx_stop_queue(fifo->txq);
 989         dev_kfree_skb(skb);
 990
 991         return NETDEV_TX_OK;
 992 }
 993
 994 /*
 995  * vxge_rx_term
 996  *
 997  * Function will be called by hw function to abort all outstanding receive
 998  * descriptors.
 999  */
1000 static void
1001 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1002 {
1003         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1004         struct vxge_rx_priv *rx_priv =
1005                 vxge_hw_ring_rxd_private_get(dtrh);
1006
1007         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1008                         ring->ndev->name, __func__, __LINE__);
1009         if (state != VXGE_HW_RXD_STATE_POSTED)
1010                 return;
1011
1012         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1013                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1014
1015         dev_kfree_skb(rx_priv->skb);
1016         rx_priv->skb_data = NULL;
1017
1018         vxge_debug_entryexit(VXGE_TRACE,
1019                 "%s: %s:%d  Exiting...",
1020                 ring->ndev->name, __func__, __LINE__);
1021 }
1022
1023 /*
1024  * vxge_tx_term
1025  *
1026  * Function will be called to abort all outstanding tx descriptors
1027  */
1028 static void
1029 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1030 {
1031         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1032         skb_frag_t *frag;
1033         int i = 0, j, frg_cnt;
1034         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1035         struct sk_buff *skb = txd_priv->skb;
1036
1037         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1038
1039         if (state != VXGE_HW_TXDL_STATE_POSTED)
1040                 return;
1041
1042         /* check skb validity */
1043         vxge_assert(skb);
1044         frg_cnt = skb_shinfo(skb)->nr_frags;
1045         frag = &skb_shinfo(skb)->frags[0];
1046
1047         /*  for unfragmented skb */
1048         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1049                 skb_headlen(skb), PCI_DMA_TODEVICE);
1050
1051         for (j = 0; j < frg_cnt; j++) {
1052                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1053                                skb_frag_size(frag), PCI_DMA_TODEVICE);
1054                 frag += 1;
1055         }
1056
1057         dev_kfree_skb(skb);
1058
1059         vxge_debug_entryexit(VXGE_TRACE,
1060                 "%s:%d  Exiting...", __func__, __LINE__);
1061 }
1062
1063 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1064 {
1065         struct list_head *entry, *next;
1066         u64 del_mac = 0;
1067         u8 *mac_address = (u8 *) (&del_mac);
1068
1069         /* Copy the mac address to delete from the list */
1070         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1071
1072         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1073                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1074                         list_del(entry);
1075                         kfree((struct vxge_mac_addrs *)entry);
1076                         vpath->mac_addr_cnt--;
1077
1078                         if (is_multicast_ether_addr(mac->macaddr))
1079                                 vpath->mcast_addr_cnt--;
1080                         return TRUE;
1081                 }
1082         }
1083
1084         return FALSE;
1085 }
1086
1087 /* delete a mac address from DA table */
1088 static enum vxge_hw_status
1089 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1090 {
1091         enum vxge_hw_status status = VXGE_HW_OK;
1092         struct vxge_vpath *vpath;
1093
1094         vpath = &vdev->vpaths[mac->vpath_no];
1095         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1096                                                 mac->macmask);
1097         if (status != VXGE_HW_OK) {
1098                 vxge_debug_init(VXGE_ERR,
1099                         "DA config delete entry failed for vpath:%d",
1100                         vpath->device_id);
1101         } else
1102                 vxge_mac_list_del(vpath, mac);
1103         return status;
1104 }
1105
1106 /**
1107  * vxge_set_multicast
1108  * @dev: pointer to the device structure
1109  *
1110  * Entry point for multicast address enable/disable
1111  * This function is a driver entry point which gets called by the kernel
1112  * whenever multicast addresses must be enabled/disabled. This also gets
1113  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1114  * determine, if multicast address must be enabled or if promiscuous mode
1115  * is to be disabled etc.
1116  */
1117 static void vxge_set_multicast(struct net_device *dev)
1118 {
1119         struct netdev_hw_addr *ha;
1120         struct vxgedev *vdev;
1121         int i, mcast_cnt = 0;
1122         struct __vxge_hw_device *hldev;
1123         struct vxge_vpath *vpath;
1124         enum vxge_hw_status status = VXGE_HW_OK;
1125         struct macInfo mac_info;
1126         int vpath_idx = 0;
1127         struct vxge_mac_addrs *mac_entry;
1128         struct list_head *list_head;
1129         struct list_head *entry, *next;
1130         u8 *mac_address = NULL;
1131
1132         vxge_debug_entryexit(VXGE_TRACE,
1133                 "%s:%d", __func__, __LINE__);
1134
1135         vdev = netdev_priv(dev);
1136         hldev = vdev->devh;
1137
1138         if (unlikely(!is_vxge_card_up(vdev)))
1139                 return;
1140
1141         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1142                 for (i = 0; i < vdev->no_of_vpath; i++) {
1143                         vpath = &vdev->vpaths[i];
1144                         vxge_assert(vpath->is_open);
1145                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1146                         if (status != VXGE_HW_OK)
1147                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1148                                                 "multicast, status %d", status);
1149                         vdev->all_multi_flg = 1;
1150                 }
1151         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1152                 for (i = 0; i < vdev->no_of_vpath; i++) {
1153                         vpath = &vdev->vpaths[i];
1154                         vxge_assert(vpath->is_open);
1155                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1156                         if (status != VXGE_HW_OK)
1157                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1158                                                 "multicast, status %d", status);
1159                         vdev->all_multi_flg = 0;
1160                 }
1161         }
1162
1163
1164         if (!vdev->config.addr_learn_en) {
1165                 for (i = 0; i < vdev->no_of_vpath; i++) {
1166                         vpath = &vdev->vpaths[i];
1167                         vxge_assert(vpath->is_open);
1168
1169                         if (dev->flags & IFF_PROMISC)
1170                                 status = vxge_hw_vpath_promisc_enable(
1171                                         vpath->handle);
1172                         else
1173                                 status = vxge_hw_vpath_promisc_disable(
1174                                         vpath->handle);
1175                         if (status != VXGE_HW_OK)
1176                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1177                                         ", status %d", dev->flags&IFF_PROMISC ?
1178                                         "enable" : "disable", status);
1179                 }
1180         }
1181
1182         memset(&mac_info, 0, sizeof(struct macInfo));
1183         /* Update individual M_CAST address list */
1184         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1185                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1186                 list_head = &vdev->vpaths[0].mac_addr_list;
1187                 if ((netdev_mc_count(dev) +
1188                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1189                                 vdev->vpaths[0].max_mac_addr_cnt)
1190                         goto _set_all_mcast;
1191
1192                 /* Delete previous MC's */
1193                 for (i = 0; i < mcast_cnt; i++) {
1194                         list_for_each_safe(entry, next, list_head) {
1195                                 mac_entry = (struct vxge_mac_addrs *)entry;
1196                                 /* Copy the mac address to delete */
1197                                 mac_address = (u8 *)&mac_entry->macaddr;
1198                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1199
1200                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1201                                         for (vpath_idx = 0; vpath_idx <
1202                                                 vdev->no_of_vpath;
1203                                                 vpath_idx++) {
1204                                                 mac_info.vpath_no = vpath_idx;
1205                                                 status = vxge_del_mac_addr(
1206                                                                 vdev,
1207                                                                 &mac_info);
1208                                         }
1209                                 }
1210                         }
1211                 }
1212
1213                 /* Add new ones */
1214                 netdev_for_each_mc_addr(ha, dev) {
1215                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1216                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1217                                         vpath_idx++) {
1218                                 mac_info.vpath_no = vpath_idx;
1219                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1220                                 status = vxge_add_mac_addr(vdev, &mac_info);
1221                                 if (status != VXGE_HW_OK) {
1222                                         vxge_debug_init(VXGE_ERR,
1223                                                 "%s:%d Setting individual"
1224                                                 "multicast address failed",
1225                                                 __func__, __LINE__);
1226                                         goto _set_all_mcast;
1227                                 }
1228                         }
1229                 }
1230
1231                 return;
1232 _set_all_mcast:
1233                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1234                 /* Delete previous MC's */
1235                 for (i = 0; i < mcast_cnt; i++) {
1236                         list_for_each_safe(entry, next, list_head) {
1237                                 mac_entry = (struct vxge_mac_addrs *)entry;
1238                                 /* Copy the mac address to delete */
1239                                 mac_address = (u8 *)&mac_entry->macaddr;
1240                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1241
1242                                 if (is_multicast_ether_addr(mac_info.macaddr))
1243                                         break;
1244                         }
1245
1246                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1247                                         vpath_idx++) {
1248                                 mac_info.vpath_no = vpath_idx;
1249                                 status = vxge_del_mac_addr(vdev, &mac_info);
1250                         }
1251                 }
1252
1253                 /* Enable all multicast */
1254                 for (i = 0; i < vdev->no_of_vpath; i++) {
1255                         vpath = &vdev->vpaths[i];
1256                         vxge_assert(vpath->is_open);
1257
1258                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1259                         if (status != VXGE_HW_OK) {
1260                                 vxge_debug_init(VXGE_ERR,
1261                                         "%s:%d Enabling all multicasts failed",
1262                                          __func__, __LINE__);
1263                         }
1264                         vdev->all_multi_flg = 1;
1265                 }
1266                 dev->flags |= IFF_ALLMULTI;
1267         }
1268
1269         vxge_debug_entryexit(VXGE_TRACE,
1270                 "%s:%d  Exiting...", __func__, __LINE__);
1271 }
1272
1273 /**
1274  * vxge_set_mac_addr
1275  * @dev: pointer to the device structure
1276  *
1277  * Update entry "0" (default MAC addr)
1278  */
1279 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1280 {
1281         struct sockaddr *addr = p;
1282         struct vxgedev *vdev;
1283         struct __vxge_hw_device *hldev;
1284         enum vxge_hw_status status = VXGE_HW_OK;
1285         struct macInfo mac_info_new, mac_info_old;
1286         int vpath_idx = 0;
1287
1288         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1289
1290         vdev = netdev_priv(dev);
1291         hldev = vdev->devh;
1292
1293         if (!is_valid_ether_addr(addr->sa_data))
1294                 return -EINVAL;
1295
1296         memset(&mac_info_new, 0, sizeof(struct macInfo));
1297         memset(&mac_info_old, 0, sizeof(struct macInfo));
1298
1299         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1300                 __func__, __LINE__);
1301
1302         /* Get the old address */
1303         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1304
1305         /* Copy the new address */
1306         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1307
1308         /* First delete the old mac address from all the vpaths
1309         as we can't specify the index while adding new mac address */
1310         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1311                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1312                 if (!vpath->is_open) {
1313                         /* This can happen when this interface is added/removed
1314                         to the bonding interface. Delete this station address
1315                         from the linked list */
1316                         vxge_mac_list_del(vpath, &mac_info_old);
1317
1318                         /* Add this new address to the linked list
1319                         for later restoring */
1320                         vxge_mac_list_add(vpath, &mac_info_new);
1321
1322                         continue;
1323                 }
1324                 /* Delete the station address */
1325                 mac_info_old.vpath_no = vpath_idx;
1326                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1327         }
1328
1329         if (unlikely(!is_vxge_card_up(vdev))) {
1330                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1331                 return VXGE_HW_OK;
1332         }
1333
1334         /* Set this mac address to all the vpaths */
1335         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1336                 mac_info_new.vpath_no = vpath_idx;
1337                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1338                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1339                 if (status != VXGE_HW_OK)
1340                         return -EINVAL;
1341         }
1342
1343         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1344
1345         return status;
1346 }
1347
1348 /*
1349  * vxge_vpath_intr_enable
1350  * @vdev: pointer to vdev
1351  * @vp_id: vpath for which to enable the interrupts
1352  *
1353  * Enables the interrupts for the vpath
1354 */
1355 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1356 {
1357         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1358         int msix_id = 0;
1359         int tim_msix_id[4] = {0, 1, 0, 0};
1360         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1361
1362         vxge_hw_vpath_intr_enable(vpath->handle);
1363
1364         if (vdev->config.intr_type == INTA)
1365                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1366         else {
1367                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1368                         alarm_msix_id);
1369
1370                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1371                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1372                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1373
1374                 /* enable the alarm vector */
1375                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1376                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1377                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1378         }
1379 }
1380
1381 /*
1382  * vxge_vpath_intr_disable
1383  * @vdev: pointer to vdev
1384  * @vp_id: vpath for which to disable the interrupts
1385  *
1386  * Disables the interrupts for the vpath
1387 */
1388 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1389 {
1390         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1391         struct __vxge_hw_device *hldev;
1392         int msix_id;
1393
1394         hldev = pci_get_drvdata(vdev->pdev);
1395
1396         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1397
1398         vxge_hw_vpath_intr_disable(vpath->handle);
1399
1400         if (vdev->config.intr_type == INTA)
1401                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1402         else {
1403                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1404                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1405                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1406
1407                 /* disable the alarm vector */
1408                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1409                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1410                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1411         }
1412 }
1413
1414 /* list all mac addresses from DA table */
1415 static enum vxge_hw_status
1416 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1417 {
1418         enum vxge_hw_status status = VXGE_HW_OK;
1419         unsigned char macmask[ETH_ALEN];
1420         unsigned char macaddr[ETH_ALEN];
1421
1422         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1423                                 macaddr, macmask);
1424         if (status != VXGE_HW_OK) {
1425                 vxge_debug_init(VXGE_ERR,
1426                         "DA config list entry failed for vpath:%d",
1427                         vpath->device_id);
1428                 return status;
1429         }
1430
1431         while (!ether_addr_equal(mac->macaddr, macaddr)) {
1432                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1433                                 macaddr, macmask);
1434                 if (status != VXGE_HW_OK)
1435                         break;
1436         }
1437
1438         return status;
1439 }
1440
1441 /* Store all mac addresses from the list to the DA table */
1442 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1443 {
1444         enum vxge_hw_status status = VXGE_HW_OK;
1445         struct macInfo mac_info;
1446         u8 *mac_address = NULL;
1447         struct list_head *entry, *next;
1448
1449         memset(&mac_info, 0, sizeof(struct macInfo));
1450
1451         if (vpath->is_open) {
1452                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1453                         mac_address =
1454                                 (u8 *)&
1455                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1456                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1457                         ((struct vxge_mac_addrs *)entry)->state =
1458                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1459                         /* does this mac address already exist in da table? */
1460                         status = vxge_search_mac_addr_in_da_table(vpath,
1461                                 &mac_info);
1462                         if (status != VXGE_HW_OK) {
1463                                 /* Add this mac address to the DA table */
1464                                 status = vxge_hw_vpath_mac_addr_add(
1465                                         vpath->handle, mac_info.macaddr,
1466                                         mac_info.macmask,
1467                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1468                                 if (status != VXGE_HW_OK) {
1469                                         vxge_debug_init(VXGE_ERR,
1470                                             "DA add entry failed for vpath:%d",
1471                                             vpath->device_id);
1472                                         ((struct vxge_mac_addrs *)entry)->state
1473                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1474                                 }
1475                         }
1476                 }
1477         }
1478
1479         return status;
1480 }
1481
1482 /* Store all vlan ids from the list to the vid table */
1483 static enum vxge_hw_status
1484 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1485 {
1486         enum vxge_hw_status status = VXGE_HW_OK;
1487         struct vxgedev *vdev = vpath->vdev;
1488         u16 vid;
1489
1490         if (!vpath->is_open)
1491                 return status;
1492
1493         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1494                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1495
1496         return status;
1497 }
1498
1499 /*
1500  * vxge_reset_vpath
1501  * @vdev: pointer to vdev
1502  * @vp_id: vpath to reset
1503  *
1504  * Resets the vpath
1505 */
1506 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1507 {
1508         enum vxge_hw_status status = VXGE_HW_OK;
1509         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1510         int ret = 0;
1511
1512         /* check if device is down already */
1513         if (unlikely(!is_vxge_card_up(vdev)))
1514                 return 0;
1515
1516         /* is device reset already scheduled */
1517         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1518                 return 0;
1519
1520         if (vpath->handle) {
1521                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1522                         if (is_vxge_card_up(vdev) &&
1523                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1524                                         != VXGE_HW_OK) {
1525                                 vxge_debug_init(VXGE_ERR,
1526                                         "vxge_hw_vpath_recover_from_reset"
1527                                         "failed for vpath:%d", vp_id);
1528                                 return status;
1529                         }
1530                 } else {
1531                         vxge_debug_init(VXGE_ERR,
1532                                 "vxge_hw_vpath_reset failed for"
1533                                 "vpath:%d", vp_id);
1534                                 return status;
1535                 }
1536         } else
1537                 return VXGE_HW_FAIL;
1538
1539         vxge_restore_vpath_mac_addr(vpath);
1540         vxge_restore_vpath_vid_table(vpath);
1541
1542         /* Enable all broadcast */
1543         vxge_hw_vpath_bcast_enable(vpath->handle);
1544
1545         /* Enable all multicast */
1546         if (vdev->all_multi_flg) {
1547                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1548                 if (status != VXGE_HW_OK)
1549                         vxge_debug_init(VXGE_ERR,
1550                                 "%s:%d Enabling multicast failed",
1551                                 __func__, __LINE__);
1552         }
1553
1554         /* Enable the interrupts */
1555         vxge_vpath_intr_enable(vdev, vp_id);
1556
1557         smp_wmb();
1558
1559         /* Enable the flow of traffic through the vpath */
1560         vxge_hw_vpath_enable(vpath->handle);
1561
1562         smp_wmb();
1563         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1564         vpath->ring.last_status = VXGE_HW_OK;
1565
1566         /* Vpath reset done */
1567         clear_bit(vp_id, &vdev->vp_reset);
1568
1569         /* Start the vpath queue */
1570         if (netif_tx_queue_stopped(vpath->fifo.txq))
1571                 netif_tx_wake_queue(vpath->fifo.txq);
1572
1573         return ret;
1574 }
1575
1576 /* Configure CI */
1577 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1578 {
1579         int i = 0;
1580
1581         /* Enable CI for RTI */
1582         if (vdev->config.intr_type == MSI_X) {
1583                 for (i = 0; i < vdev->no_of_vpath; i++) {
1584                         struct __vxge_hw_ring *hw_ring;
1585
1586                         hw_ring = vdev->vpaths[i].ring.handle;
1587                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1588                 }
1589         }
1590
1591         /* Enable CI for TTI */
1592         for (i = 0; i < vdev->no_of_vpath; i++) {
1593                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1594                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1595                 /*
1596                  * For Inta (with or without napi), Set CI ON for only one
1597                  * vpath. (Have only one free running timer).
1598                  */
1599                 if ((vdev->config.intr_type == INTA) && (i == 0))
1600                         break;
1601         }
1602
1603         return;
1604 }
1605
1606 static int do_vxge_reset(struct vxgedev *vdev, int event)
1607 {
1608         enum vxge_hw_status status;
1609         int ret = 0, vp_id, i;
1610
1611         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1612
1613         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1614                 /* check if device is down already */
1615                 if (unlikely(!is_vxge_card_up(vdev)))
1616                         return 0;
1617
1618                 /* is reset already scheduled */
1619                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1620                         return 0;
1621         }
1622
1623         if (event == VXGE_LL_FULL_RESET) {
1624                 netif_carrier_off(vdev->ndev);
1625
1626                 /* wait for all the vpath reset to complete */
1627                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1628                         while (test_bit(vp_id, &vdev->vp_reset))
1629                                 msleep(50);
1630                 }
1631
1632                 netif_carrier_on(vdev->ndev);
1633
1634                 /* if execution mode is set to debug, don't reset the adapter */
1635                 if (unlikely(vdev->exec_mode)) {
1636                         vxge_debug_init(VXGE_ERR,
1637                                 "%s: execution mode is debug, returning..",
1638                                 vdev->ndev->name);
1639                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1640                         netif_tx_stop_all_queues(vdev->ndev);
1641                         return 0;
1642                 }
1643         }
1644
1645         if (event == VXGE_LL_FULL_RESET) {
1646                 vxge_hw_device_wait_receive_idle(vdev->devh);
1647                 vxge_hw_device_intr_disable(vdev->devh);
1648
1649                 switch (vdev->cric_err_event) {
1650                 case VXGE_HW_EVENT_UNKNOWN:
1651                         netif_tx_stop_all_queues(vdev->ndev);
1652                         vxge_debug_init(VXGE_ERR,
1653                                 "fatal: %s: Disabling device due to"
1654                                 "unknown error",
1655                                 vdev->ndev->name);
1656                         ret = -EPERM;
1657                         goto out;
1658                 case VXGE_HW_EVENT_RESET_START:
1659                         break;
1660                 case VXGE_HW_EVENT_RESET_COMPLETE:
1661                 case VXGE_HW_EVENT_LINK_DOWN:
1662                 case VXGE_HW_EVENT_LINK_UP:
1663                 case VXGE_HW_EVENT_ALARM_CLEARED:
1664                 case VXGE_HW_EVENT_ECCERR:
1665                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1666                         ret = -EPERM;
1667                         goto out;
1668                 case VXGE_HW_EVENT_FIFO_ERR:
1669                 case VXGE_HW_EVENT_VPATH_ERR:
1670                         break;
1671                 case VXGE_HW_EVENT_CRITICAL_ERR:
1672                         netif_tx_stop_all_queues(vdev->ndev);
1673                         vxge_debug_init(VXGE_ERR,
1674                                 "fatal: %s: Disabling device due to"
1675                                 "serious error",
1676                                 vdev->ndev->name);
1677                         /* SOP or device reset required */
1678                         /* This event is not currently used */
1679                         ret = -EPERM;
1680                         goto out;
1681                 case VXGE_HW_EVENT_SERR:
1682                         netif_tx_stop_all_queues(vdev->ndev);
1683                         vxge_debug_init(VXGE_ERR,
1684                                 "fatal: %s: Disabling device due to"
1685                                 "serious error",
1686                                 vdev->ndev->name);
1687                         ret = -EPERM;
1688                         goto out;
1689                 case VXGE_HW_EVENT_SRPCIM_SERR:
1690                 case VXGE_HW_EVENT_MRPCIM_SERR:
1691                         ret = -EPERM;
1692                         goto out;
1693                 case VXGE_HW_EVENT_SLOT_FREEZE:
1694                         netif_tx_stop_all_queues(vdev->ndev);
1695                         vxge_debug_init(VXGE_ERR,
1696                                 "fatal: %s: Disabling device due to"
1697                                 "slot freeze",
1698                                 vdev->ndev->name);
1699                         ret = -EPERM;
1700                         goto out;
1701                 default:
1702                         break;
1703
1704                 }
1705         }
1706
1707         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1708                 netif_tx_stop_all_queues(vdev->ndev);
1709
1710         if (event == VXGE_LL_FULL_RESET) {
1711                 status = vxge_reset_all_vpaths(vdev);
1712                 if (status != VXGE_HW_OK) {
1713                         vxge_debug_init(VXGE_ERR,
1714                                 "fatal: %s: can not reset vpaths",
1715                                 vdev->ndev->name);
1716                         ret = -EPERM;
1717                         goto out;
1718                 }
1719         }
1720
1721         if (event == VXGE_LL_COMPL_RESET) {
1722                 for (i = 0; i < vdev->no_of_vpath; i++)
1723                         if (vdev->vpaths[i].handle) {
1724                                 if (vxge_hw_vpath_recover_from_reset(
1725                                         vdev->vpaths[i].handle)
1726                                                 != VXGE_HW_OK) {
1727                                         vxge_debug_init(VXGE_ERR,
1728                                                 "vxge_hw_vpath_recover_"
1729                                                 "from_reset failed for vpath: "
1730                                                 "%d", i);
1731                                         ret = -EPERM;
1732                                         goto out;
1733                                 }
1734                                 } else {
1735                                         vxge_debug_init(VXGE_ERR,
1736                                         "vxge_hw_vpath_reset failed for "
1737                                                 "vpath:%d", i);
1738                                         ret = -EPERM;
1739                                         goto out;
1740                                 }
1741         }
1742
1743         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1744                 /* Reprogram the DA table with populated mac addresses */
1745                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1746                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1747                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1748                 }
1749
1750                 /* enable vpath interrupts */
1751                 for (i = 0; i < vdev->no_of_vpath; i++)
1752                         vxge_vpath_intr_enable(vdev, i);
1753
1754                 vxge_hw_device_intr_enable(vdev->devh);
1755
1756                 smp_wmb();
1757
1758                 /* Indicate card up */
1759                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1760
1761                 /* Get the traffic to flow through the vpaths */
1762                 for (i = 0; i < vdev->no_of_vpath; i++) {
1763                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1764                         smp_wmb();
1765                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1766                 }
1767
1768                 netif_tx_wake_all_queues(vdev->ndev);
1769         }
1770
1771         /* configure CI */
1772         vxge_config_ci_for_tti_rti(vdev);
1773
1774 out:
1775         vxge_debug_entryexit(VXGE_TRACE,
1776                 "%s:%d  Exiting...", __func__, __LINE__);
1777
1778         /* Indicate reset done */
1779         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1780                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1781         return ret;
1782 }
1783
1784 /*
1785  * vxge_reset
1786  * @vdev: pointer to ll device
1787  *
1788  * driver may reset the chip on events of serr, eccerr, etc
1789  */
1790 static void vxge_reset(struct work_struct *work)
1791 {
1792         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1793
1794         if (!netif_running(vdev->ndev))
1795                 return;
1796
1797         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1798 }
1799
1800 /**
1801  * vxge_poll - Receive handler when Receive Polling is used.
1802  * @dev: pointer to the device structure.
1803  * @budget: Number of packets budgeted to be processed in this iteration.
1804  *
1805  * This function comes into picture only if Receive side is being handled
1806  * through polling (called NAPI in linux). It mostly does what the normal
1807  * Rx interrupt handler does in terms of descriptor and packet processing
1808  * but not in an interrupt context. Also it will process a specified number
1809  * of packets at most in one iteration. This value is passed down by the
1810  * kernel as the function argument 'budget'.
1811  */
1812 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1813 {
1814         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1815         int pkts_processed;
1816         int budget_org = budget;
1817
1818         ring->budget = budget;
1819         ring->pkts_processed = 0;
1820         vxge_hw_vpath_poll_rx(ring->handle);
1821         pkts_processed = ring->pkts_processed;
1822
1823         if (ring->pkts_processed < budget_org) {
1824                 napi_complete(napi);
1825
1826                 /* Re enable the Rx interrupts for the vpath */
1827                 vxge_hw_channel_msix_unmask(
1828                                 (struct __vxge_hw_channel *)ring->handle,
1829                                 ring->rx_vector_no);
1830                 mmiowb();
1831         }
1832
1833         /* We are copying and returning the local variable, in case if after
1834          * clearing the msix interrupt above, if the interrupt fires right
1835          * away which can preempt this NAPI thread */
1836         return pkts_processed;
1837 }
1838
1839 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1840 {
1841         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1842         int pkts_processed = 0;
1843         int i;
1844         int budget_org = budget;
1845         struct vxge_ring *ring;
1846
1847         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1848
1849         for (i = 0; i < vdev->no_of_vpath; i++) {
1850                 ring = &vdev->vpaths[i].ring;
1851                 ring->budget = budget;
1852                 ring->pkts_processed = 0;
1853                 vxge_hw_vpath_poll_rx(ring->handle);
1854                 pkts_processed += ring->pkts_processed;
1855                 budget -= ring->pkts_processed;
1856                 if (budget <= 0)
1857                         break;
1858         }
1859
1860         VXGE_COMPLETE_ALL_TX(vdev);
1861
1862         if (pkts_processed < budget_org) {
1863                 napi_complete(napi);
1864                 /* Re enable the Rx interrupts for the ring */
1865                 vxge_hw_device_unmask_all(hldev);
1866                 vxge_hw_device_flush_io(hldev);
1867         }
1868
1869         return pkts_processed;
1870 }
1871
1872 #ifdef CONFIG_NET_POLL_CONTROLLER
1873 /**
1874  * vxge_netpoll - netpoll event handler entry point
1875  * @dev : pointer to the device structure.
1876  * Description:
1877  *      This function will be called by upper layer to check for events on the
1878  * interface in situations where interrupts are disabled. It is used for
1879  * specific in-kernel networking tasks, such as remote consoles and kernel
1880  * debugging over the network (example netdump in RedHat).
1881  */
1882 static void vxge_netpoll(struct net_device *dev)
1883 {
1884         struct vxgedev *vdev = netdev_priv(dev);
1885         struct pci_dev *pdev = vdev->pdev;
1886         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1887         const int irq = pdev->irq;
1888
1889         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1890
1891         if (pci_channel_offline(pdev))
1892                 return;
1893
1894         disable_irq(irq);
1895         vxge_hw_device_clear_tx_rx(hldev);
1896
1897         vxge_hw_device_clear_tx_rx(hldev);
1898         VXGE_COMPLETE_ALL_RX(vdev);
1899         VXGE_COMPLETE_ALL_TX(vdev);
1900
1901         enable_irq(irq);
1902
1903         vxge_debug_entryexit(VXGE_TRACE,
1904                 "%s:%d  Exiting...", __func__, __LINE__);
1905 }
1906 #endif
1907
1908 /* RTH configuration */
1909 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1910 {
1911         enum vxge_hw_status status = VXGE_HW_OK;
1912         struct vxge_hw_rth_hash_types hash_types;
1913         u8 itable[256] = {0}; /* indirection table */
1914         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1915         int index;
1916
1917         /*
1918          * Filling
1919          *      - itable with bucket numbers
1920          *      - mtable with bucket-to-vpath mapping
1921          */
1922         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1923                 itable[index] = index;
1924                 mtable[index] = index % vdev->no_of_vpath;
1925         }
1926
1927         /* set indirection table, bucket-to-vpath mapping */
1928         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1929                                                 vdev->no_of_vpath,
1930                                                 mtable, itable,
1931                                                 vdev->config.rth_bkt_sz);
1932         if (status != VXGE_HW_OK) {
1933                 vxge_debug_init(VXGE_ERR,
1934                         "RTH indirection table configuration failed "
1935                         "for vpath:%d", vdev->vpaths[0].device_id);
1936                 return status;
1937         }
1938
1939         /* Fill RTH hash types */
1940         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1941         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1942         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1943         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1944         hash_types.hash_type_tcpipv6ex_en =
1945                                         vdev->config.rth_hash_type_tcpipv6ex;
1946         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1947
1948         /*
1949          * Because the itable_set() method uses the active_table field
1950          * for the target virtual path the RTH config should be updated
1951          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1952          * when steering frames.
1953          */
1954          for (index = 0; index < vdev->no_of_vpath; index++) {
1955                 status = vxge_hw_vpath_rts_rth_set(
1956                                 vdev->vpaths[index].handle,
1957                                 vdev->config.rth_algorithm,
1958                                 &hash_types,
1959                                 vdev->config.rth_bkt_sz);
1960                  if (status != VXGE_HW_OK) {
1961                         vxge_debug_init(VXGE_ERR,
1962                                 "RTH configuration failed for vpath:%d",
1963                                 vdev->vpaths[index].device_id);
1964                         return status;
1965                  }
1966          }
1967
1968         return status;
1969 }
1970
1971 /* reset vpaths */
1972 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1973 {
1974         enum vxge_hw_status status = VXGE_HW_OK;
1975         struct vxge_vpath *vpath;
1976         int i;
1977
1978         for (i = 0; i < vdev->no_of_vpath; i++) {
1979                 vpath = &vdev->vpaths[i];
1980                 if (vpath->handle) {
1981                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1982                                 if (is_vxge_card_up(vdev) &&
1983                                         vxge_hw_vpath_recover_from_reset(
1984                                                 vpath->handle) != VXGE_HW_OK) {
1985                                         vxge_debug_init(VXGE_ERR,
1986                                                 "vxge_hw_vpath_recover_"
1987                                                 "from_reset failed for vpath: "
1988                                                 "%d", i);
1989                                         return status;
1990                                 }
1991                         } else {
1992                                 vxge_debug_init(VXGE_ERR,
1993                                         "vxge_hw_vpath_reset failed for "
1994                                         "vpath:%d", i);
1995                                         return status;
1996                         }
1997                 }
1998         }
1999
2000         return status;
2001 }
2002
2003 /* close vpaths */
2004 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2005 {
2006         struct vxge_vpath *vpath;
2007         int i;
2008
2009         for (i = index; i < vdev->no_of_vpath; i++) {
2010                 vpath = &vdev->vpaths[i];
2011
2012                 if (vpath->handle && vpath->is_open) {
2013                         vxge_hw_vpath_close(vpath->handle);
2014                         vdev->stats.vpaths_open--;
2015                 }
2016                 vpath->is_open = 0;
2017                 vpath->handle = NULL;
2018         }
2019 }
2020
2021 /* open vpaths */
2022 static int vxge_open_vpaths(struct vxgedev *vdev)
2023 {
2024         struct vxge_hw_vpath_attr attr;
2025         enum vxge_hw_status status;
2026         struct vxge_vpath *vpath;
2027         u32 vp_id = 0;
2028         int i;
2029
2030         for (i = 0; i < vdev->no_of_vpath; i++) {
2031                 vpath = &vdev->vpaths[i];
2032                 vxge_assert(vpath->is_configured);
2033
2034                 if (!vdev->titan1) {
2035                         struct vxge_hw_vp_config *vcfg;
2036                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2037
2038                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2039                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2040                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2041                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2042                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2043                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2044                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2045                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2046                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2047                 }
2048
2049                 attr.vp_id = vpath->device_id;
2050                 attr.fifo_attr.callback = vxge_xmit_compl;
2051                 attr.fifo_attr.txdl_term = vxge_tx_term;
2052                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2053                 attr.fifo_attr.userdata = &vpath->fifo;
2054
2055                 attr.ring_attr.callback = vxge_rx_1b_compl;
2056                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2057                 attr.ring_attr.rxd_term = vxge_rx_term;
2058                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2059                 attr.ring_attr.userdata = &vpath->ring;
2060
2061                 vpath->ring.ndev = vdev->ndev;
2062                 vpath->ring.pdev = vdev->pdev;
2063
2064                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2065                 if (status == VXGE_HW_OK) {
2066                         vpath->fifo.handle =
2067                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2068                         vpath->ring.handle =
2069                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2070                         vpath->fifo.tx_steering_type =
2071                                 vdev->config.tx_steering_type;
2072                         vpath->fifo.ndev = vdev->ndev;
2073                         vpath->fifo.pdev = vdev->pdev;
2074
2075                         u64_stats_init(&vpath->fifo.stats.syncp);
2076                         u64_stats_init(&vpath->ring.stats.syncp);
2077
2078                         if (vdev->config.tx_steering_type)
2079                                 vpath->fifo.txq =
2080                                         netdev_get_tx_queue(vdev->ndev, i);
2081                         else
2082                                 vpath->fifo.txq =
2083                                         netdev_get_tx_queue(vdev->ndev, 0);
2084                         vpath->fifo.indicate_max_pkts =
2085                                 vdev->config.fifo_indicate_max_pkts;
2086                         vpath->fifo.tx_vector_no = 0;
2087                         vpath->ring.rx_vector_no = 0;
2088                         vpath->ring.rx_hwts = vdev->rx_hwts;
2089                         vpath->is_open = 1;
2090                         vdev->vp_handles[i] = vpath->handle;
2091                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2092                         vdev->stats.vpaths_open++;
2093                 } else {
2094                         vdev->stats.vpath_open_fail++;
2095                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2096                                         "open with status: %d",
2097                                         vdev->ndev->name, vpath->device_id,
2098                                         status);
2099                         vxge_close_vpaths(vdev, 0);
2100                         return -EPERM;
2101                 }
2102
2103                 vp_id = vpath->handle->vpath->vp_id;
2104                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2105         }
2106
2107         return VXGE_HW_OK;
2108 }
2109
2110 /**
2111  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2112  *  if the interrupts are not within a range
2113  *  @fifo: pointer to transmit fifo structure
2114  *  Description: The function changes boundary timer and restriction timer
2115  *  value depends on the traffic
2116  *  Return Value: None
2117  */
2118 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2119 {
2120         fifo->interrupt_count++;
2121         if (jiffies > fifo->jiffies + HZ / 100) {
2122                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2123
2124                 fifo->jiffies = jiffies;
2125                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2126                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2127                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2128                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2129                 } else if (hw_fifo->rtimer != 0) {
2130                         hw_fifo->rtimer = 0;
2131                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2132                 }
2133                 fifo->interrupt_count = 0;
2134         }
2135 }
2136
2137 /**
2138  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2139  *  if the interrupts are not within a range
2140  *  @ring: pointer to receive ring structure
2141  *  Description: The function increases of decreases the packet counts within
2142  *  the ranges of traffic utilization, if the interrupts due to this ring are
2143  *  not within a fixed range.
2144  *  Return Value: Nothing
2145  */
2146 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2147 {
2148         ring->interrupt_count++;
2149         if (jiffies > ring->jiffies + HZ / 100) {
2150                 struct __vxge_hw_ring *hw_ring = ring->handle;
2151
2152                 ring->jiffies = jiffies;
2153                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2154                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2155                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2156                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2157                 } else if (hw_ring->rtimer != 0) {
2158                         hw_ring->rtimer = 0;
2159                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2160                 }
2161                 ring->interrupt_count = 0;
2162         }
2163 }
2164
2165 /*
2166  *  vxge_isr_napi
2167  *  @irq: the irq of the device.
2168  *  @dev_id: a void pointer to the hldev structure of the Titan device
2169  *  @ptregs: pointer to the registers pushed on the stack.
2170  *
2171  *  This function is the ISR handler of the device when napi is enabled. It
2172  *  identifies the reason for the interrupt and calls the relevant service
2173  *  routines.
2174  */
2175 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2176 {
2177         struct net_device *dev;
2178         struct __vxge_hw_device *hldev;
2179         u64 reason;
2180         enum vxge_hw_status status;
2181         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2182
2183         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2184
2185         dev = vdev->ndev;
2186         hldev = pci_get_drvdata(vdev->pdev);
2187
2188         if (pci_channel_offline(vdev->pdev))
2189                 return IRQ_NONE;
2190
2191         if (unlikely(!is_vxge_card_up(vdev)))
2192                 return IRQ_HANDLED;
2193
2194         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2195         if (status == VXGE_HW_OK) {
2196                 vxge_hw_device_mask_all(hldev);
2197
2198                 if (reason &
2199                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2200                         vdev->vpaths_deployed >>
2201                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2202
2203                         vxge_hw_device_clear_tx_rx(hldev);
2204                         napi_schedule(&vdev->napi);
2205                         vxge_debug_intr(VXGE_TRACE,
2206                                 "%s:%d  Exiting...", __func__, __LINE__);
2207                         return IRQ_HANDLED;
2208                 } else
2209                         vxge_hw_device_unmask_all(hldev);
2210         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2211                 (status == VXGE_HW_ERR_CRITICAL) ||
2212                 (status == VXGE_HW_ERR_FIFO))) {
2213                 vxge_hw_device_mask_all(hldev);
2214                 vxge_hw_device_flush_io(hldev);
2215                 return IRQ_HANDLED;
2216         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2217                 return IRQ_HANDLED;
2218
2219         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2220         return IRQ_NONE;
2221 }
2222
2223 #ifdef CONFIG_PCI_MSI
2224
2225 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2226 {
2227         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2228
2229         adaptive_coalesce_tx_interrupts(fifo);
2230
2231         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2232                                   fifo->tx_vector_no);
2233
2234         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2235                                    fifo->tx_vector_no);
2236
2237         VXGE_COMPLETE_VPATH_TX(fifo);
2238
2239         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2240                                     fifo->tx_vector_no);
2241
2242         mmiowb();
2243
2244         return IRQ_HANDLED;
2245 }
2246
2247 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2248 {
2249         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2250
2251         adaptive_coalesce_rx_interrupts(ring);
2252
2253         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2254                                   ring->rx_vector_no);
2255
2256         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2257                                    ring->rx_vector_no);
2258
2259         napi_schedule(&ring->napi);
2260         return IRQ_HANDLED;
2261 }
2262
2263 static irqreturn_t
2264 vxge_alarm_msix_handle(int irq, void *dev_id)
2265 {
2266         int i;
2267         enum vxge_hw_status status;
2268         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2269         struct vxgedev *vdev = vpath->vdev;
2270         int msix_id = (vpath->handle->vpath->vp_id *
2271                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2272
2273         for (i = 0; i < vdev->no_of_vpath; i++) {
2274                 /* Reduce the chance of losing alarm interrupts by masking
2275                  * the vector. A pending bit will be set if an alarm is
2276                  * generated and on unmask the interrupt will be fired.
2277                  */
2278                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2279                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2280                 mmiowb();
2281
2282                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2283                         vdev->exec_mode);
2284                 if (status == VXGE_HW_OK) {
2285                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2286                                                   msix_id);
2287                         mmiowb();
2288                         continue;
2289                 }
2290                 vxge_debug_intr(VXGE_ERR,
2291                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2292                         VXGE_DRIVER_NAME, status);
2293         }
2294         return IRQ_HANDLED;
2295 }
2296
2297 static int vxge_alloc_msix(struct vxgedev *vdev)
2298 {
2299         int j, i, ret = 0;
2300         int msix_intr_vect = 0, temp;
2301         vdev->intr_cnt = 0;
2302
2303 start:
2304         /* Tx/Rx MSIX Vectors count */
2305         vdev->intr_cnt = vdev->no_of_vpath * 2;
2306
2307         /* Alarm MSIX Vectors count */
2308         vdev->intr_cnt++;
2309
2310         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2311                                 GFP_KERNEL);
2312         if (!vdev->entries) {
2313                 vxge_debug_init(VXGE_ERR,
2314                         "%s: memory allocation failed",
2315                         VXGE_DRIVER_NAME);
2316                 ret = -ENOMEM;
2317                 goto alloc_entries_failed;
2318         }
2319
2320         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2321                                      sizeof(struct vxge_msix_entry),
2322                                      GFP_KERNEL);
2323         if (!vdev->vxge_entries) {
2324                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2325                         VXGE_DRIVER_NAME);
2326                 ret = -ENOMEM;
2327                 goto alloc_vxge_entries_failed;
2328         }
2329
2330         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2331
2332                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2333
2334                 /* Initialize the fifo vector */
2335                 vdev->entries[j].entry = msix_intr_vect;
2336                 vdev->vxge_entries[j].entry = msix_intr_vect;
2337                 vdev->vxge_entries[j].in_use = 0;
2338                 j++;
2339
2340                 /* Initialize the ring vector */
2341                 vdev->entries[j].entry = msix_intr_vect + 1;
2342                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2343                 vdev->vxge_entries[j].in_use = 0;
2344                 j++;
2345         }
2346
2347         /* Initialize the alarm vector */
2348         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2349         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2350         vdev->vxge_entries[j].in_use = 0;
2351
2352         ret = pci_enable_msix_range(vdev->pdev,
2353                                     vdev->entries, 3, vdev->intr_cnt);
2354         if (ret < 0) {
2355                 ret = -ENODEV;
2356                 goto enable_msix_failed;
2357         } else if (ret < vdev->intr_cnt) {
2358                 pci_disable_msix(vdev->pdev);
2359
2360                 vxge_debug_init(VXGE_ERR,
2361                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2362                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2363                 if (max_config_vpath != VXGE_USE_DEFAULT) {
2364                         ret = -ENODEV;
2365                         goto enable_msix_failed;
2366                 }
2367
2368                 kfree(vdev->entries);
2369                 kfree(vdev->vxge_entries);
2370                 vdev->entries = NULL;
2371                 vdev->vxge_entries = NULL;
2372                 /* Try with less no of vector by reducing no of vpaths count */
2373                 temp = (ret - 1)/2;
2374                 vxge_close_vpaths(vdev, temp);
2375                 vdev->no_of_vpath = temp;
2376                 goto start;
2377         }
2378         return 0;
2379
2380 enable_msix_failed:
2381         kfree(vdev->vxge_entries);
2382 alloc_vxge_entries_failed:
2383         kfree(vdev->entries);
2384 alloc_entries_failed:
2385         return ret;
2386 }
2387
2388 static int vxge_enable_msix(struct vxgedev *vdev)
2389 {
2390
2391         int i, ret = 0;
2392         /* 0 - Tx, 1 - Rx  */
2393         int tim_msix_id[4] = {0, 1, 0, 0};
2394
2395         vdev->intr_cnt = 0;
2396
2397         /* allocate msix vectors */
2398         ret = vxge_alloc_msix(vdev);
2399         if (!ret) {
2400                 for (i = 0; i < vdev->no_of_vpath; i++) {
2401                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2402
2403                         /* If fifo or ring are not enabled, the MSIX vector for
2404                          * it should be set to 0.
2405                          */
2406                         vpath->ring.rx_vector_no = (vpath->device_id *
2407                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2408
2409                         vpath->fifo.tx_vector_no = (vpath->device_id *
2410                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2411
2412                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2413                                                VXGE_ALARM_MSIX_ID);
2414                 }
2415         }
2416
2417         return ret;
2418 }
2419
2420 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2421 {
2422         int intr_cnt;
2423
2424         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2425                 intr_cnt++) {
2426                 if (vdev->vxge_entries[intr_cnt].in_use) {
2427                         synchronize_irq(vdev->entries[intr_cnt].vector);
2428                         free_irq(vdev->entries[intr_cnt].vector,
2429                                 vdev->vxge_entries[intr_cnt].arg);
2430                         vdev->vxge_entries[intr_cnt].in_use = 0;
2431                 }
2432         }
2433
2434         kfree(vdev->entries);
2435         kfree(vdev->vxge_entries);
2436         vdev->entries = NULL;
2437         vdev->vxge_entries = NULL;
2438
2439         if (vdev->config.intr_type == MSI_X)
2440                 pci_disable_msix(vdev->pdev);
2441 }
2442 #endif
2443
2444 static void vxge_rem_isr(struct vxgedev *vdev)
2445 {
2446 #ifdef CONFIG_PCI_MSI
2447         if (vdev->config.intr_type == MSI_X) {
2448                 vxge_rem_msix_isr(vdev);
2449         } else
2450 #endif
2451         if (vdev->config.intr_type == INTA) {
2452                         synchronize_irq(vdev->pdev->irq);
2453                         free_irq(vdev->pdev->irq, vdev);
2454         }
2455 }
2456
2457 static int vxge_add_isr(struct vxgedev *vdev)
2458 {
2459         int ret = 0;
2460 #ifdef CONFIG_PCI_MSI
2461         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2462         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2463
2464         if (vdev->config.intr_type == MSI_X)
2465                 ret = vxge_enable_msix(vdev);
2466
2467         if (ret) {
2468                 vxge_debug_init(VXGE_ERR,
2469                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2470                 vxge_debug_init(VXGE_ERR,
2471                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2472                 vdev->config.intr_type = INTA;
2473         }
2474
2475         if (vdev->config.intr_type == MSI_X) {
2476                 for (intr_idx = 0;
2477                      intr_idx < (vdev->no_of_vpath *
2478                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2479
2480                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2481                         irq_req = 0;
2482
2483                         switch (msix_idx) {
2484                         case 0:
2485                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2486                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2487                                         vdev->ndev->name,
2488                                         vdev->entries[intr_cnt].entry,
2489                                         pci_fun, vp_idx);
2490                                 ret = request_irq(
2491                                     vdev->entries[intr_cnt].vector,
2492                                         vxge_tx_msix_handle, 0,
2493                                         vdev->desc[intr_cnt],
2494                                         &vdev->vpaths[vp_idx].fifo);
2495                                         vdev->vxge_entries[intr_cnt].arg =
2496                                                 &vdev->vpaths[vp_idx].fifo;
2497                                 irq_req = 1;
2498                                 break;
2499                         case 1:
2500                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2501                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2502                                         vdev->ndev->name,
2503                                         vdev->entries[intr_cnt].entry,
2504                                         pci_fun, vp_idx);
2505                                 ret = request_irq(
2506                                     vdev->entries[intr_cnt].vector,
2507                                         vxge_rx_msix_napi_handle,
2508                                         0,
2509                                         vdev->desc[intr_cnt],
2510                                         &vdev->vpaths[vp_idx].ring);
2511                                         vdev->vxge_entries[intr_cnt].arg =
2512                                                 &vdev->vpaths[vp_idx].ring;
2513                                 irq_req = 1;
2514                                 break;
2515                         }
2516
2517                         if (ret) {
2518                                 vxge_debug_init(VXGE_ERR,
2519                                         "%s: MSIX - %d  Registration failed",
2520                                         vdev->ndev->name, intr_cnt);
2521                                 vxge_rem_msix_isr(vdev);
2522                                 vdev->config.intr_type = INTA;
2523                                 vxge_debug_init(VXGE_ERR,
2524                                         "%s: Defaulting to INTA"
2525                                         , vdev->ndev->name);
2526                                         goto INTA_MODE;
2527                         }
2528
2529                         if (irq_req) {
2530                                 /* We requested for this msix interrupt */
2531                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2532                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2533                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2534                                 vxge_hw_vpath_msix_unmask(
2535                                         vdev->vpaths[vp_idx].handle,
2536                                         msix_idx);
2537                                 intr_cnt++;
2538                         }
2539
2540                         /* Point to next vpath handler */
2541                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2542                             (vp_idx < (vdev->no_of_vpath - 1)))
2543                                 vp_idx++;
2544                 }
2545
2546                 intr_cnt = vdev->no_of_vpath * 2;
2547                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2548                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2549                         vdev->ndev->name,
2550                         vdev->entries[intr_cnt].entry,
2551                         pci_fun);
2552                 /* For Alarm interrupts */
2553                 ret = request_irq(vdev->entries[intr_cnt].vector,
2554                                         vxge_alarm_msix_handle, 0,
2555                                         vdev->desc[intr_cnt],
2556                                         &vdev->vpaths[0]);
2557                 if (ret) {
2558                         vxge_debug_init(VXGE_ERR,
2559                                 "%s: MSIX - %d Registration failed",
2560                                 vdev->ndev->name, intr_cnt);
2561                         vxge_rem_msix_isr(vdev);
2562                         vdev->config.intr_type = INTA;
2563                         vxge_debug_init(VXGE_ERR,
2564                                 "%s: Defaulting to INTA",
2565                                 vdev->ndev->name);
2566                                 goto INTA_MODE;
2567                 }
2568
2569                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2570                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2571                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2572                                         msix_idx);
2573                 vdev->vxge_entries[intr_cnt].in_use = 1;
2574                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2575         }
2576 INTA_MODE:
2577 #endif
2578
2579         if (vdev->config.intr_type == INTA) {
2580                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2581                         "%s:vxge:INTA", vdev->ndev->name);
2582                 vxge_hw_device_set_intr_type(vdev->devh,
2583                         VXGE_HW_INTR_MODE_IRQLINE);
2584
2585                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2586
2587                 ret = request_irq((int) vdev->pdev->irq,
2588                         vxge_isr_napi,
2589                         IRQF_SHARED, vdev->desc[0], vdev);
2590                 if (ret) {
2591                         vxge_debug_init(VXGE_ERR,
2592                                 "%s %s-%d: ISR registration failed",
2593                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2594                         return -ENODEV;
2595                 }
2596                 vxge_debug_init(VXGE_TRACE,
2597                         "new %s-%d line allocated",
2598                         "IRQ", vdev->pdev->irq);
2599         }
2600
2601         return VXGE_HW_OK;
2602 }
2603
2604 static void vxge_poll_vp_reset(unsigned long data)
2605 {
2606         struct vxgedev *vdev = (struct vxgedev *)data;
2607         int i, j = 0;
2608
2609         for (i = 0; i < vdev->no_of_vpath; i++) {
2610                 if (test_bit(i, &vdev->vp_reset)) {
2611                         vxge_reset_vpath(vdev, i);
2612                         j++;
2613                 }
2614         }
2615         if (j && (vdev->config.intr_type != MSI_X)) {
2616                 vxge_hw_device_unmask_all(vdev->devh);
2617                 vxge_hw_device_flush_io(vdev->devh);
2618         }
2619
2620         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2621 }
2622
2623 static void vxge_poll_vp_lockup(unsigned long data)
2624 {
2625         struct vxgedev *vdev = (struct vxgedev *)data;
2626         enum vxge_hw_status status = VXGE_HW_OK;
2627         struct vxge_vpath *vpath;
2628         struct vxge_ring *ring;
2629         int i;
2630         unsigned long rx_frms;
2631
2632         for (i = 0; i < vdev->no_of_vpath; i++) {
2633                 ring = &vdev->vpaths[i].ring;
2634
2635                 /* Truncated to machine word size number of frames */
2636                 rx_frms = ACCESS_ONCE(ring->stats.rx_frms);
2637
2638                 /* Did this vpath received any packets */
2639                 if (ring->stats.prev_rx_frms == rx_frms) {
2640                         status = vxge_hw_vpath_check_leak(ring->handle);
2641
2642                         /* Did it received any packets last time */
2643                         if ((VXGE_HW_FAIL == status) &&
2644                                 (VXGE_HW_FAIL == ring->last_status)) {
2645
2646                                 /* schedule vpath reset */
2647                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2648                                         vpath = &vdev->vpaths[i];
2649
2650                                         /* disable interrupts for this vpath */
2651                                         vxge_vpath_intr_disable(vdev, i);
2652
2653                                         /* stop the queue for this vpath */
2654                                         netif_tx_stop_queue(vpath->fifo.txq);
2655                                         continue;
2656                                 }
2657                         }
2658                 }
2659                 ring->stats.prev_rx_frms = rx_frms;
2660                 ring->last_status = status;
2661         }
2662
2663         /* Check every 1 milli second */
2664         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2665 }
2666
2667 static netdev_features_t vxge_fix_features(struct net_device *dev,
2668         netdev_features_t features)
2669 {
2670         netdev_features_t changed = dev->features ^ features;
2671
2672         /* Enabling RTH requires some of the logic in vxge_device_register and a
2673          * vpath reset.  Due to these restrictions, only allow modification
2674          * while the interface is down.
2675          */
2676         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2677                 features ^= NETIF_F_RXHASH;
2678
2679         return features;
2680 }
2681
2682 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2683 {
2684         struct vxgedev *vdev = netdev_priv(dev);
2685         netdev_features_t changed = dev->features ^ features;
2686
2687         if (!(changed & NETIF_F_RXHASH))
2688                 return 0;
2689
2690         /* !netif_running() ensured by vxge_fix_features() */
2691
2692         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2693         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2694                 dev->features = features ^ NETIF_F_RXHASH;
2695                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2696                 return -EIO;
2697         }
2698
2699         return 0;
2700 }
2701
2702 /**
2703  * vxge_open
2704  * @dev: pointer to the device structure.
2705  *
2706  * This function is the open entry point of the driver. It mainly calls a
2707  * function to allocate Rx buffers and inserts them into the buffer
2708  * descriptors and then enables the Rx part of the NIC.
2709  * Return value: '0' on success and an appropriate (-)ve integer as
2710  * defined in errno.h file on failure.
2711  */
2712 static int vxge_open(struct net_device *dev)
2713 {
2714         enum vxge_hw_status status;
2715         struct vxgedev *vdev;
2716         struct __vxge_hw_device *hldev;
2717         struct vxge_vpath *vpath;
2718         int ret = 0;
2719         int i;
2720         u64 val64, function_mode;
2721
2722         vxge_debug_entryexit(VXGE_TRACE,
2723                 "%s: %s:%d", dev->name, __func__, __LINE__);
2724
2725         vdev = netdev_priv(dev);
2726         hldev = pci_get_drvdata(vdev->pdev);
2727         function_mode = vdev->config.device_hw_info.function_mode;
2728
2729         /* make sure you have link off by default every time Nic is
2730          * initialized */
2731         netif_carrier_off(dev);
2732
2733         /* Open VPATHs */
2734         status = vxge_open_vpaths(vdev);
2735         if (status != VXGE_HW_OK) {
2736                 vxge_debug_init(VXGE_ERR,
2737                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2738                 ret = -EPERM;
2739                 goto out0;
2740         }
2741
2742         vdev->mtu = dev->mtu;
2743
2744         status = vxge_add_isr(vdev);
2745         if (status != VXGE_HW_OK) {
2746                 vxge_debug_init(VXGE_ERR,
2747                         "%s: fatal: ISR add failed", dev->name);
2748                 ret = -EPERM;
2749                 goto out1;
2750         }
2751
2752         if (vdev->config.intr_type != MSI_X) {
2753                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2754                         vdev->config.napi_weight);
2755                 napi_enable(&vdev->napi);
2756                 for (i = 0; i < vdev->no_of_vpath; i++) {
2757                         vpath = &vdev->vpaths[i];
2758                         vpath->ring.napi_p = &vdev->napi;
2759                 }
2760         } else {
2761                 for (i = 0; i < vdev->no_of_vpath; i++) {
2762                         vpath = &vdev->vpaths[i];
2763                         netif_napi_add(dev, &vpath->ring.napi,
2764                             vxge_poll_msix, vdev->config.napi_weight);
2765                         napi_enable(&vpath->ring.napi);
2766                         vpath->ring.napi_p = &vpath->ring.napi;
2767                 }
2768         }
2769
2770         /* configure RTH */
2771         if (vdev->config.rth_steering) {
2772                 status = vxge_rth_configure(vdev);
2773                 if (status != VXGE_HW_OK) {
2774                         vxge_debug_init(VXGE_ERR,
2775                                 "%s: fatal: RTH configuration failed",
2776                                 dev->name);
2777                         ret = -EPERM;
2778                         goto out2;
2779                 }
2780         }
2781         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2782                hldev->config.rth_en ? "enabled" : "disabled");
2783
2784         for (i = 0; i < vdev->no_of_vpath; i++) {
2785                 vpath = &vdev->vpaths[i];
2786
2787                 /* set initial mtu before enabling the device */
2788                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2789                 if (status != VXGE_HW_OK) {
2790                         vxge_debug_init(VXGE_ERR,
2791                                 "%s: fatal: can not set new MTU", dev->name);
2792                         ret = -EPERM;
2793                         goto out2;
2794                 }
2795         }
2796
2797         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2798         vxge_debug_init(vdev->level_trace,
2799                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2800         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2801
2802         /* Restore the DA, VID table and also multicast and promiscuous mode
2803          * states
2804          */
2805         if (vdev->all_multi_flg) {
2806                 for (i = 0; i < vdev->no_of_vpath; i++) {
2807                         vpath = &vdev->vpaths[i];
2808                         vxge_restore_vpath_mac_addr(vpath);
2809                         vxge_restore_vpath_vid_table(vpath);
2810
2811                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2812                         if (status != VXGE_HW_OK)
2813                                 vxge_debug_init(VXGE_ERR,
2814                                         "%s:%d Enabling multicast failed",
2815                                         __func__, __LINE__);
2816                 }
2817         }
2818
2819         /* Enable vpath to sniff all unicast/multicast traffic that not
2820          * addressed to them. We allow promiscuous mode for PF only
2821          */
2822
2823         val64 = 0;
2824         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2825                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2826
2827         vxge_hw_mgmt_reg_write(vdev->devh,
2828                 vxge_hw_mgmt_reg_type_mrpcim,
2829                 0,
2830                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2831                         rxmac_authorize_all_addr),
2832                 val64);
2833
2834         vxge_hw_mgmt_reg_write(vdev->devh,
2835                 vxge_hw_mgmt_reg_type_mrpcim,
2836                 0,
2837                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2838                         rxmac_authorize_all_vid),
2839                 val64);
2840
2841         vxge_set_multicast(dev);
2842
2843         /* Enabling Bcast and mcast for all vpath */
2844         for (i = 0; i < vdev->no_of_vpath; i++) {
2845                 vpath = &vdev->vpaths[i];
2846                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2847                 if (status != VXGE_HW_OK)
2848                         vxge_debug_init(VXGE_ERR,
2849                                 "%s : Can not enable bcast for vpath "
2850                                 "id %d", dev->name, i);
2851                 if (vdev->config.addr_learn_en) {
2852                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2853                         if (status != VXGE_HW_OK)
2854                                 vxge_debug_init(VXGE_ERR,
2855                                         "%s : Can not enable mcast for vpath "
2856                                         "id %d", dev->name, i);
2857                 }
2858         }
2859
2860         vxge_hw_device_setpause_data(vdev->devh, 0,
2861                 vdev->config.tx_pause_enable,
2862                 vdev->config.rx_pause_enable);
2863
2864         if (vdev->vp_reset_timer.function == NULL)
2865                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset, vdev,
2866                               HZ / 2);
2867
2868         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2869         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2870                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2871                               HZ / 2);
2872
2873         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2874
2875         smp_wmb();
2876
2877         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2878                 netif_carrier_on(vdev->ndev);
2879                 netdev_notice(vdev->ndev, "Link Up\n");
2880                 vdev->stats.link_up++;
2881         }
2882
2883         vxge_hw_device_intr_enable(vdev->devh);
2884
2885         smp_wmb();
2886
2887         for (i = 0; i < vdev->no_of_vpath; i++) {
2888                 vpath = &vdev->vpaths[i];
2889
2890                 vxge_hw_vpath_enable(vpath->handle);
2891                 smp_wmb();
2892                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2893         }
2894
2895         netif_tx_start_all_queues(vdev->ndev);
2896
2897         /* configure CI */
2898         vxge_config_ci_for_tti_rti(vdev);
2899
2900         goto out0;
2901
2902 out2:
2903         vxge_rem_isr(vdev);
2904
2905         /* Disable napi */
2906         if (vdev->config.intr_type != MSI_X)
2907                 napi_disable(&vdev->napi);
2908         else {
2909                 for (i = 0; i < vdev->no_of_vpath; i++)
2910                         napi_disable(&vdev->vpaths[i].ring.napi);
2911         }
2912
2913 out1:
2914         vxge_close_vpaths(vdev, 0);
2915 out0:
2916         vxge_debug_entryexit(VXGE_TRACE,
2917                                 "%s: %s:%d  Exiting...",
2918                                 dev->name, __func__, __LINE__);
2919         return ret;
2920 }
2921
2922 /* Loop through the mac address list and delete all the entries */
2923 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2924 {
2925
2926         struct list_head *entry, *next;
2927         if (list_empty(&vpath->mac_addr_list))
2928                 return;
2929
2930         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2931                 list_del(entry);
2932                 kfree((struct vxge_mac_addrs *)entry);
2933         }
2934 }
2935
2936 static void vxge_napi_del_all(struct vxgedev *vdev)
2937 {
2938         int i;
2939         if (vdev->config.intr_type != MSI_X)
2940                 netif_napi_del(&vdev->napi);
2941         else {
2942                 for (i = 0; i < vdev->no_of_vpath; i++)
2943                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2944         }
2945 }
2946
2947 static int do_vxge_close(struct net_device *dev, int do_io)
2948 {
2949         enum vxge_hw_status status;
2950         struct vxgedev *vdev;
2951         struct __vxge_hw_device *hldev;
2952         int i;
2953         u64 val64, vpath_vector;
2954         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2955                 dev->name, __func__, __LINE__);
2956
2957         vdev = netdev_priv(dev);
2958         hldev = pci_get_drvdata(vdev->pdev);
2959
2960         if (unlikely(!is_vxge_card_up(vdev)))
2961                 return 0;
2962
2963         /* If vxge_handle_crit_err task is executing,
2964          * wait till it completes. */
2965         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2966                 msleep(50);
2967
2968         if (do_io) {
2969                 /* Put the vpath back in normal mode */
2970                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2971                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2972                                 vxge_hw_mgmt_reg_type_mrpcim,
2973                                 0,
2974                                 (ulong)offsetof(
2975                                         struct vxge_hw_mrpcim_reg,
2976                                         rts_mgr_cbasin_cfg),
2977                                 &val64);
2978                 if (status == VXGE_HW_OK) {
2979                         val64 &= ~vpath_vector;
2980                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2981                                         vxge_hw_mgmt_reg_type_mrpcim,
2982                                         0,
2983                                         (ulong)offsetof(
2984                                                 struct vxge_hw_mrpcim_reg,
2985                                                 rts_mgr_cbasin_cfg),
2986                                         val64);
2987                 }
2988
2989                 /* Remove the function 0 from promiscuous mode */
2990                 vxge_hw_mgmt_reg_write(vdev->devh,
2991                         vxge_hw_mgmt_reg_type_mrpcim,
2992                         0,
2993                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2994                                 rxmac_authorize_all_addr),
2995                         0);
2996
2997                 vxge_hw_mgmt_reg_write(vdev->devh,
2998                         vxge_hw_mgmt_reg_type_mrpcim,
2999                         0,
3000                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
3001                                 rxmac_authorize_all_vid),
3002                         0);
3003
3004                 smp_wmb();
3005         }
3006
3007         if (vdev->titan1)
3008                 del_timer_sync(&vdev->vp_lockup_timer);
3009
3010         del_timer_sync(&vdev->vp_reset_timer);
3011
3012         if (do_io)
3013                 vxge_hw_device_wait_receive_idle(hldev);
3014
3015         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3016
3017         /* Disable napi */
3018         if (vdev->config.intr_type != MSI_X)
3019                 napi_disable(&vdev->napi);
3020         else {
3021                 for (i = 0; i < vdev->no_of_vpath; i++)
3022                         napi_disable(&vdev->vpaths[i].ring.napi);
3023         }
3024
3025         netif_carrier_off(vdev->ndev);
3026         netdev_notice(vdev->ndev, "Link Down\n");
3027         netif_tx_stop_all_queues(vdev->ndev);
3028
3029         /* Note that at this point xmit() is stopped by upper layer */
3030         if (do_io)
3031                 vxge_hw_device_intr_disable(vdev->devh);
3032
3033         vxge_rem_isr(vdev);
3034
3035         vxge_napi_del_all(vdev);
3036
3037         if (do_io)
3038                 vxge_reset_all_vpaths(vdev);
3039
3040         vxge_close_vpaths(vdev, 0);
3041
3042         vxge_debug_entryexit(VXGE_TRACE,
3043                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3044
3045         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3046
3047         return 0;
3048 }
3049
3050 /**
3051  * vxge_close
3052  * @dev: device pointer.
3053  *
3054  * This is the stop entry point of the driver. It needs to undo exactly
3055  * whatever was done by the open entry point, thus it's usually referred to
3056  * as the close function.Among other things this function mainly stops the
3057  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3058  * Return value: '0' on success and an appropriate (-)ve integer as
3059  * defined in errno.h file on failure.
3060  */
3061 static int vxge_close(struct net_device *dev)
3062 {
3063         do_vxge_close(dev, 1);
3064         return 0;
3065 }
3066
3067 /**
3068  * vxge_change_mtu
3069  * @dev: net device pointer.
3070  * @new_mtu :the new MTU size for the device.
3071  *
3072  * A driver entry point to change MTU size for the device. Before changing
3073  * the MTU the device must be stopped.
3074  */
3075 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3076 {
3077         struct vxgedev *vdev = netdev_priv(dev);
3078
3079         vxge_debug_entryexit(vdev->level_trace,
3080                 "%s:%d", __func__, __LINE__);
3081         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3082                 vxge_debug_init(vdev->level_err,
3083                         "%s: mtu size is invalid", dev->name);
3084                 return -EPERM;
3085         }
3086
3087         /* check if device is down already */
3088         if (unlikely(!is_vxge_card_up(vdev))) {
3089                 /* just store new value, will use later on open() */
3090                 dev->mtu = new_mtu;
3091                 vxge_debug_init(vdev->level_err,
3092                         "%s", "device is down on MTU change");
3093                 return 0;
3094         }
3095
3096         vxge_debug_init(vdev->level_trace,
3097                 "trying to apply new MTU %d", new_mtu);
3098
3099         if (vxge_close(dev))
3100                 return -EIO;
3101
3102         dev->mtu = new_mtu;
3103         vdev->mtu = new_mtu;
3104
3105         if (vxge_open(dev))
3106                 return -EIO;
3107
3108         vxge_debug_init(vdev->level_trace,
3109                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3110
3111         vxge_debug_entryexit(vdev->level_trace,
3112                 "%s:%d  Exiting...", __func__, __LINE__);
3113
3114         return 0;
3115 }
3116
3117 /**
3118  * vxge_get_stats64
3119  * @dev: pointer to the device structure
3120  * @stats: pointer to struct rtnl_link_stats64
3121  *
3122  */
3123 static struct rtnl_link_stats64 *
3124 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3125 {
3126         struct vxgedev *vdev = netdev_priv(dev);
3127         int k;
3128
3129         /* net_stats already zeroed by caller */
3130         for (k = 0; k < vdev->no_of_vpath; k++) {
3131                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3132                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3133                 unsigned int start;
3134                 u64 packets, bytes, multicast;
3135
3136                 do {
3137                         start = u64_stats_fetch_begin_bh(&rxstats->syncp);
3138
3139                         packets   = rxstats->rx_frms;
3140                         multicast = rxstats->rx_mcast;
3141                         bytes     = rxstats->rx_bytes;
3142                 } while (u64_stats_fetch_retry_bh(&rxstats->syncp, start));
3143
3144                 net_stats->rx_packets += packets;
3145                 net_stats->rx_bytes += bytes;
3146                 net_stats->multicast += multicast;
3147
3148                 net_stats->rx_errors += rxstats->rx_errors;
3149                 net_stats->rx_dropped += rxstats->rx_dropped;
3150
3151                 do {
3152                         start = u64_stats_fetch_begin_bh(&txstats->syncp);
3153
3154                         packets = txstats->tx_frms;
3155                         bytes   = txstats->tx_bytes;
3156                 } while (u64_stats_fetch_retry_bh(&txstats->syncp, start));
3157
3158                 net_stats->tx_packets += packets;
3159                 net_stats->tx_bytes += bytes;
3160                 net_stats->tx_errors += txstats->tx_errors;
3161         }
3162
3163         return net_stats;
3164 }
3165
3166 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3167 {
3168         enum vxge_hw_status status;
3169         u64 val64;
3170
3171         /* Timestamp is passed to the driver via the FCS, therefore we
3172          * must disable the FCS stripping by the adapter.  Since this is
3173          * required for the driver to load (due to a hardware bug),
3174          * there is no need to do anything special here.
3175          */
3176         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3177                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3178                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3179
3180         status = vxge_hw_mgmt_reg_write(devh,
3181                                         vxge_hw_mgmt_reg_type_mrpcim,
3182                                         0,
3183                                         offsetof(struct vxge_hw_mrpcim_reg,
3184                                                  xmac_timestamp),
3185                                         val64);
3186         vxge_hw_device_flush_io(devh);
3187         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3188         return status;
3189 }
3190
3191 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3192 {
3193         struct hwtstamp_config config;
3194         int i;
3195
3196         if (copy_from_user(&config, data, sizeof(config)))
3197                 return -EFAULT;
3198
3199         /* reserved for future extensions */
3200         if (config.flags)
3201                 return -EINVAL;
3202
3203         /* Transmit HW Timestamp not supported */
3204         switch (config.tx_type) {
3205         case HWTSTAMP_TX_OFF:
3206                 break;
3207         case HWTSTAMP_TX_ON:
3208         default:
3209                 return -ERANGE;
3210         }
3211
3212         switch (config.rx_filter) {
3213         case HWTSTAMP_FILTER_NONE:
3214                 vdev->rx_hwts = 0;
3215                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3216                 break;
3217
3218         case HWTSTAMP_FILTER_ALL:
3219         case HWTSTAMP_FILTER_SOME:
3220         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3221         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3222         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3223         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3224         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3225         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3226         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3227         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3228         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3229         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3230         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3231         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3232                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3233                         return -EFAULT;
3234
3235                 vdev->rx_hwts = 1;
3236                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3237                 break;
3238
3239         default:
3240                  return -ERANGE;
3241         }
3242
3243         for (i = 0; i < vdev->no_of_vpath; i++)
3244                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3245
3246         if (copy_to_user(data, &config, sizeof(config)))
3247                 return -EFAULT;
3248
3249         return 0;
3250 }
3251
3252 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3253 {
3254         struct hwtstamp_config config;
3255
3256         config.flags = 0;
3257         config.tx_type = HWTSTAMP_TX_OFF;
3258         config.rx_filter = (vdev->rx_hwts ?
3259                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3260
3261         if (copy_to_user(data, &config, sizeof(config)))
3262                 return -EFAULT;
3263
3264         return 0;
3265 }
3266
3267 /**
3268  * vxge_ioctl
3269  * @dev: Device pointer.
3270  * @ifr: An IOCTL specific structure, that can contain a pointer to
3271  *       a proprietary structure used to pass information to the driver.
3272  * @cmd: This is used to distinguish between the different commands that
3273  *       can be passed to the IOCTL functions.
3274  *
3275  * Entry point for the Ioctl.
3276  */
3277 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3278 {
3279         struct vxgedev *vdev = netdev_priv(dev);
3280
3281         switch (cmd) {
3282         case SIOCSHWTSTAMP:
3283                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3284         case SIOCGHWTSTAMP:
3285                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3286         default:
3287                 return -EOPNOTSUPP;
3288         }
3289 }
3290
3291 /**
3292  * vxge_tx_watchdog
3293  * @dev: pointer to net device structure
3294  *
3295  * Watchdog for transmit side.
3296  * This function is triggered if the Tx Queue is stopped
3297  * for a pre-defined amount of time when the Interface is still up.
3298  */
3299 static void vxge_tx_watchdog(struct net_device *dev)
3300 {
3301         struct vxgedev *vdev;
3302
3303         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3304
3305         vdev = netdev_priv(dev);
3306
3307         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3308
3309         schedule_work(&vdev->reset_task);
3310         vxge_debug_entryexit(VXGE_TRACE,
3311                 "%s:%d  Exiting...", __func__, __LINE__);
3312 }
3313
3314 /**
3315  * vxge_vlan_rx_add_vid
3316  * @dev: net device pointer.
3317  * @proto: vlan protocol
3318  * @vid: vid
3319  *
3320  * Add the vlan id to the devices vlan id table
3321  */
3322 static int
3323 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3324 {
3325         struct vxgedev *vdev = netdev_priv(dev);
3326         struct vxge_vpath *vpath;
3327         int vp_id;
3328
3329         /* Add these vlan to the vid table */
3330         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3331                 vpath = &vdev->vpaths[vp_id];
3332                 if (!vpath->is_open)
3333                         continue;
3334                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3335         }
3336         set_bit(vid, vdev->active_vlans);
3337         return 0;
3338 }
3339
3340 /**
3341  * vxge_vlan_rx_kill_vid
3342  * @dev: net device pointer.
3343  * @proto: vlan protocol
3344  * @vid: vid
3345  *
3346  * Remove the vlan id from the device's vlan id table
3347  */
3348 static int
3349 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3350 {
3351         struct vxgedev *vdev = netdev_priv(dev);
3352         struct vxge_vpath *vpath;
3353         int vp_id;
3354
3355         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3356
3357         /* Delete this vlan from the vid table */
3358         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3359                 vpath = &vdev->vpaths[vp_id];
3360                 if (!vpath->is_open)
3361                         continue;
3362                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3363         }
3364         vxge_debug_entryexit(VXGE_TRACE,
3365                 "%s:%d  Exiting...", __func__, __LINE__);
3366         clear_bit(vid, vdev->active_vlans);
3367         return 0;
3368 }
3369
3370 static const struct net_device_ops vxge_netdev_ops = {
3371         .ndo_open               = vxge_open,
3372         .ndo_stop               = vxge_close,
3373         .ndo_get_stats64        = vxge_get_stats64,
3374         .ndo_start_xmit         = vxge_xmit,
3375         .ndo_validate_addr      = eth_validate_addr,
3376         .ndo_set_rx_mode        = vxge_set_multicast,
3377         .ndo_do_ioctl           = vxge_ioctl,
3378         .ndo_set_mac_address    = vxge_set_mac_addr,
3379         .ndo_change_mtu         = vxge_change_mtu,
3380         .ndo_fix_features       = vxge_fix_features,
3381         .ndo_set_features       = vxge_set_features,
3382         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3383         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3384         .ndo_tx_timeout         = vxge_tx_watchdog,
3385 #ifdef CONFIG_NET_POLL_CONTROLLER
3386         .ndo_poll_controller    = vxge_netpoll,
3387 #endif
3388 };
3389
3390 static int vxge_device_register(struct __vxge_hw_device *hldev,
3391                                 struct vxge_config *config, int high_dma,
3392                                 int no_of_vpath, struct vxgedev **vdev_out)
3393 {
3394         struct net_device *ndev;
3395         enum vxge_hw_status status = VXGE_HW_OK;
3396         struct vxgedev *vdev;
3397         int ret = 0, no_of_queue = 1;
3398         u64 stat;
3399
3400         *vdev_out = NULL;
3401         if (config->tx_steering_type)
3402                 no_of_queue = no_of_vpath;
3403
3404         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3405                         no_of_queue);
3406         if (ndev == NULL) {
3407                 vxge_debug_init(
3408                         vxge_hw_device_trace_level_get(hldev),
3409                 "%s : device allocation failed", __func__);
3410                 ret = -ENODEV;
3411                 goto _out0;
3412         }
3413
3414         vxge_debug_entryexit(
3415                 vxge_hw_device_trace_level_get(hldev),
3416                 "%s: %s:%d  Entering...",
3417                 ndev->name, __func__, __LINE__);
3418
3419         vdev = netdev_priv(ndev);
3420         memset(vdev, 0, sizeof(struct vxgedev));
3421
3422         vdev->ndev = ndev;
3423         vdev->devh = hldev;
3424         vdev->pdev = hldev->pdev;
3425         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3426         vdev->rx_hwts = 0;
3427         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3428
3429         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3430
3431         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3432                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3433                 NETIF_F_TSO | NETIF_F_TSO6 |
3434                 NETIF_F_HW_VLAN_CTAG_TX;
3435         if (vdev->config.rth_steering != NO_STEERING)
3436                 ndev->hw_features |= NETIF_F_RXHASH;
3437
3438         ndev->features |= ndev->hw_features |
3439                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3440
3441
3442         ndev->netdev_ops = &vxge_netdev_ops;
3443
3444         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3445         INIT_WORK(&vdev->reset_task, vxge_reset);
3446
3447         vxge_initialize_ethtool_ops(ndev);
3448
3449         /* Allocate memory for vpath */
3450         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3451                                 no_of_vpath, GFP_KERNEL);
3452         if (!vdev->vpaths) {
3453                 vxge_debug_init(VXGE_ERR,
3454                         "%s: vpath memory allocation failed",
3455                         vdev->ndev->name);
3456                 ret = -ENOMEM;
3457                 goto _out1;
3458         }
3459
3460         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3461                 "%s : checksumming enabled", __func__);
3462
3463         if (high_dma) {
3464                 ndev->features |= NETIF_F_HIGHDMA;
3465                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3466                         "%s : using High DMA", __func__);
3467         }
3468
3469         ret = register_netdev(ndev);
3470         if (ret) {
3471                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3472                         "%s: %s : device registration failed!",
3473                         ndev->name, __func__);
3474                 goto _out2;
3475         }
3476
3477         /*  Set the factory defined MAC address initially */
3478         ndev->addr_len = ETH_ALEN;
3479
3480         /* Make Link state as off at this point, when the Link change
3481          * interrupt comes the state will be automatically changed to
3482          * the right state.
3483          */
3484         netif_carrier_off(ndev);
3485
3486         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3487                 "%s: Ethernet device registered",
3488                 ndev->name);
3489
3490         hldev->ndev = ndev;
3491         *vdev_out = vdev;
3492
3493         /* Resetting the Device stats */
3494         status = vxge_hw_mrpcim_stats_access(
3495                                 hldev,
3496                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3497                                 0,
3498                                 0,
3499                                 &stat);
3500
3501         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3502                 vxge_debug_init(
3503                         vxge_hw_device_trace_level_get(hldev),
3504                         "%s: device stats clear returns"
3505                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3506
3507         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3508                 "%s: %s:%d  Exiting...",
3509                 ndev->name, __func__, __LINE__);
3510
3511         return ret;
3512 _out2:
3513         kfree(vdev->vpaths);
3514 _out1:
3515         free_netdev(ndev);
3516 _out0:
3517         return ret;
3518 }
3519
3520 /*
3521  * vxge_device_unregister
3522  *
3523  * This function will unregister and free network device
3524  */
3525 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3526 {
3527         struct vxgedev *vdev;
3528         struct net_device *dev;
3529         char buf[IFNAMSIZ];
3530
3531         dev = hldev->ndev;
3532         vdev = netdev_priv(dev);
3533
3534         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3535                              __func__, __LINE__);
3536
3537         strncpy(buf, dev->name, IFNAMSIZ);
3538
3539         flush_work(&vdev->reset_task);
3540
3541         /* in 2.6 will call stop() if device is up */
3542         unregister_netdev(dev);
3543
3544         kfree(vdev->vpaths);
3545
3546         /* we are safe to free it now */
3547         free_netdev(dev);
3548
3549         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3550                         buf);
3551         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3552                              __func__, __LINE__);
3553 }
3554
3555 /*
3556  * vxge_callback_crit_err
3557  *
3558  * This function is called by the alarm handler in interrupt context.
3559  * Driver must analyze it based on the event type.
3560  */
3561 static void
3562 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3563                         enum vxge_hw_event type, u64 vp_id)
3564 {
3565         struct net_device *dev = hldev->ndev;
3566         struct vxgedev *vdev = netdev_priv(dev);
3567         struct vxge_vpath *vpath = NULL;
3568         int vpath_idx;
3569
3570         vxge_debug_entryexit(vdev->level_trace,
3571                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3572
3573         /* Note: This event type should be used for device wide
3574          * indications only - Serious errors, Slot freeze and critical errors
3575          */
3576         vdev->cric_err_event = type;
3577
3578         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3579                 vpath = &vdev->vpaths[vpath_idx];
3580                 if (vpath->device_id == vp_id)
3581                         break;
3582         }
3583
3584         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3585                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3586                         vxge_debug_init(VXGE_ERR,
3587                                 "%s: Slot is frozen", vdev->ndev->name);
3588                 } else if (type == VXGE_HW_EVENT_SERR) {
3589                         vxge_debug_init(VXGE_ERR,
3590                                 "%s: Encountered Serious Error",
3591                                 vdev->ndev->name);
3592                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3593                         vxge_debug_init(VXGE_ERR,
3594                                 "%s: Encountered Critical Error",
3595                                 vdev->ndev->name);
3596         }
3597
3598         if ((type == VXGE_HW_EVENT_SERR) ||
3599                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3600                 if (unlikely(vdev->exec_mode))
3601                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3602         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3603                 vxge_hw_device_mask_all(hldev);
3604                 if (unlikely(vdev->exec_mode))
3605                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3606         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3607                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3608
3609                 if (unlikely(vdev->exec_mode))
3610                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3611                 else {
3612                         /* check if this vpath is already set for reset */
3613                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3614
3615                                 /* disable interrupts for this vpath */
3616                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3617
3618                                 /* stop the queue for this vpath */
3619                                 netif_tx_stop_queue(vpath->fifo.txq);
3620                         }
3621                 }
3622         }
3623
3624         vxge_debug_entryexit(vdev->level_trace,
3625                 "%s: %s:%d  Exiting...",
3626                 vdev->ndev->name, __func__, __LINE__);
3627 }
3628
3629 static void verify_bandwidth(void)
3630 {
3631         int i, band_width, total = 0, equal_priority = 0;
3632
3633         /* 1. If user enters 0 for some fifo, give equal priority to all */
3634         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3635                 if (bw_percentage[i] == 0) {
3636                         equal_priority = 1;
3637                         break;
3638                 }
3639         }
3640
3641         if (!equal_priority) {
3642                 /* 2. If sum exceeds 100, give equal priority to all */
3643                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3644                         if (bw_percentage[i] == 0xFF)
3645                                 break;
3646
3647                         total += bw_percentage[i];
3648                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3649                                 equal_priority = 1;
3650                                 break;
3651                         }
3652                 }
3653         }
3654
3655         if (!equal_priority) {
3656                 /* Is all the bandwidth consumed? */
3657                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3658                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3659                                 /* Split rest of bw equally among next VPs*/
3660                                 band_width =
3661                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3662                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3663                                 if (band_width < 2) /* min of 2% */
3664                                         equal_priority = 1;
3665                                 else {
3666                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3667                                                 i++)
3668                                                 bw_percentage[i] =
3669                                                         band_width;
3670                                 }
3671                         }
3672                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3673                         equal_priority = 1;
3674         }
3675
3676         if (equal_priority) {
3677                 vxge_debug_init(VXGE_ERR,
3678                         "%s: Assigning equal bandwidth to all the vpaths",
3679                         VXGE_DRIVER_NAME);
3680                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3681                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3682                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3683                         bw_percentage[i] = bw_percentage[0];
3684         }
3685 }
3686
3687 /*
3688  * Vpath configuration
3689  */
3690 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3691                               u64 vpath_mask, struct vxge_config *config_param)
3692 {
3693         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3694         u32 txdl_size, txdl_per_memblock;
3695
3696         temp = driver_config->vpath_per_dev;
3697         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3698                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3699                 /* No more CPU. Return vpath number as zero.*/
3700                 if (driver_config->g_no_cpus == -1)
3701                         return 0;
3702
3703                 if (!driver_config->g_no_cpus)
3704                         driver_config->g_no_cpus =
3705                                 netif_get_num_default_rss_queues();
3706
3707                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3708                 if (!driver_config->vpath_per_dev)
3709                         driver_config->vpath_per_dev = 1;
3710
3711                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3712                         if (!vxge_bVALn(vpath_mask, i, 1))
3713                                 continue;
3714                         else
3715                                 default_no_vpath++;
3716                 if (default_no_vpath < driver_config->vpath_per_dev)
3717                         driver_config->vpath_per_dev = default_no_vpath;
3718
3719                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3720                                 (driver_config->vpath_per_dev * 2);
3721                 if (driver_config->g_no_cpus <= 0)
3722                         driver_config->g_no_cpus = -1;
3723         }
3724
3725         if (driver_config->vpath_per_dev == 1) {
3726                 vxge_debug_ll_config(VXGE_TRACE,
3727                         "%s: Disable tx and rx steering, "
3728                         "as single vpath is configured", VXGE_DRIVER_NAME);
3729                 config_param->rth_steering = NO_STEERING;
3730                 config_param->tx_steering_type = NO_STEERING;
3731                 device_config->rth_en = 0;
3732         }
3733
3734         /* configure bandwidth */
3735         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3736                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3737
3738         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3739                 device_config->vp_config[i].vp_id = i;
3740                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3741                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3742                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3743                                 vxge_debug_ll_config(VXGE_TRACE,
3744                                         "%s: vpath: %d is not available",
3745                                         VXGE_DRIVER_NAME, i);
3746                                 continue;
3747                         } else {
3748                                 vxge_debug_ll_config(VXGE_TRACE,
3749                                         "%s: vpath: %d available",
3750                                         VXGE_DRIVER_NAME, i);
3751                                 no_of_vpaths++;
3752                         }
3753                 } else {
3754                         vxge_debug_ll_config(VXGE_TRACE,
3755                                 "%s: vpath: %d is not configured, "
3756                                 "max_config_vpath exceeded",
3757                                 VXGE_DRIVER_NAME, i);
3758                         break;
3759                 }
3760
3761                 /* Configure Tx fifo's */
3762                 device_config->vp_config[i].fifo.enable =
3763                                                 VXGE_HW_FIFO_ENABLE;
3764                 device_config->vp_config[i].fifo.max_frags =
3765                                 MAX_SKB_FRAGS + 1;
3766                 device_config->vp_config[i].fifo.memblock_size =
3767                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3768
3769                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3770                                 sizeof(struct vxge_hw_fifo_txd);
3771                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3772
3773                 device_config->vp_config[i].fifo.fifo_blocks =
3774                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3775
3776                 device_config->vp_config[i].fifo.intr =
3777                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3778
3779                 /* Configure tti properties */
3780                 device_config->vp_config[i].tti.intr_enable =
3781                                         VXGE_HW_TIM_INTR_ENABLE;
3782
3783                 device_config->vp_config[i].tti.btimer_val =
3784                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3785
3786                 device_config->vp_config[i].tti.timer_ac_en =
3787                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3788
3789                 /* For msi-x with napi (each vector has a handler of its own) -
3790                  * Set CI to OFF for all vpaths
3791                  */
3792                 device_config->vp_config[i].tti.timer_ci_en =
3793                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3794
3795                 device_config->vp_config[i].tti.timer_ri_en =
3796                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3797
3798                 device_config->vp_config[i].tti.util_sel =
3799                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3800
3801                 device_config->vp_config[i].tti.ltimer_val =
3802                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3803
3804                 device_config->vp_config[i].tti.rtimer_val =
3805                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3806
3807                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3808                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3809                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3810                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3811                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3812                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3813                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3814
3815                 /* Configure Rx rings */
3816                 device_config->vp_config[i].ring.enable  =
3817                                                 VXGE_HW_RING_ENABLE;
3818
3819                 device_config->vp_config[i].ring.ring_blocks  =
3820                                                 VXGE_HW_DEF_RING_BLOCKS;
3821
3822                 device_config->vp_config[i].ring.buffer_mode =
3823                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3824
3825                 device_config->vp_config[i].ring.rxds_limit  =
3826                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3827
3828                 device_config->vp_config[i].ring.scatter_mode =
3829                                         VXGE_HW_RING_SCATTER_MODE_A;
3830
3831                 /* Configure rti properties */
3832                 device_config->vp_config[i].rti.intr_enable =
3833                                         VXGE_HW_TIM_INTR_ENABLE;
3834
3835                 device_config->vp_config[i].rti.btimer_val =
3836                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3837
3838                 device_config->vp_config[i].rti.timer_ac_en =
3839                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3840
3841                 device_config->vp_config[i].rti.timer_ci_en =
3842                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3843
3844                 device_config->vp_config[i].rti.timer_ri_en =
3845                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3846
3847                 device_config->vp_config[i].rti.util_sel =
3848                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3849
3850                 device_config->vp_config[i].rti.urange_a =
3851                                                 RTI_RX_URANGE_A;
3852                 device_config->vp_config[i].rti.urange_b =
3853                                                 RTI_RX_URANGE_B;
3854                 device_config->vp_config[i].rti.urange_c =
3855                                                 RTI_RX_URANGE_C;
3856                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3857                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3858                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3859                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3860
3861                 device_config->vp_config[i].rti.rtimer_val =
3862                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3863
3864                 device_config->vp_config[i].rti.ltimer_val =
3865                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3866
3867                 device_config->vp_config[i].rpa_strip_vlan_tag =
3868                         vlan_tag_strip;
3869         }
3870
3871         driver_config->vpath_per_dev = temp;
3872         return no_of_vpaths;
3873 }
3874
3875 /* initialize device configuratrions */
3876 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3877                                     int *intr_type)
3878 {
3879         /* Used for CQRQ/SRQ. */
3880         device_config->dma_blockpool_initial =
3881                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3882
3883         device_config->dma_blockpool_max =
3884                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3885
3886         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3887                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3888
3889 #ifndef CONFIG_PCI_MSI
3890         vxge_debug_init(VXGE_ERR,
3891                 "%s: This Kernel does not support "
3892                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3893         *intr_type = INTA;
3894 #endif
3895
3896         /* Configure whether MSI-X or IRQL. */
3897         switch (*intr_type) {
3898         case INTA:
3899                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3900                 break;
3901
3902         case MSI_X:
3903                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3904                 break;
3905         }
3906
3907         /* Timer period between device poll */
3908         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3909
3910         /* Configure mac based steering. */
3911         device_config->rts_mac_en = addr_learn_en;
3912
3913         /* Configure Vpaths */
3914         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3915
3916         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3917                         __func__);
3918         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3919                         device_config->intr_mode);
3920         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3921                         device_config->device_poll_millis);
3922         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3923                         device_config->rth_en);
3924         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3925                         device_config->rth_it_type);
3926 }
3927
3928 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3929 {
3930         int i;
3931
3932         vxge_debug_init(VXGE_TRACE,
3933                 "%s: %d Vpath(s) opened",
3934                 vdev->ndev->name, vdev->no_of_vpath);
3935
3936         switch (vdev->config.intr_type) {
3937         case INTA:
3938                 vxge_debug_init(VXGE_TRACE,
3939                         "%s: Interrupt type INTA", vdev->ndev->name);
3940                 break;
3941
3942         case MSI_X:
3943                 vxge_debug_init(VXGE_TRACE,
3944                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3945                 break;
3946         }
3947
3948         if (vdev->config.rth_steering) {
3949                 vxge_debug_init(VXGE_TRACE,
3950                         "%s: RTH steering enabled for TCP_IPV4",
3951                         vdev->ndev->name);
3952         } else {
3953                 vxge_debug_init(VXGE_TRACE,
3954                         "%s: RTH steering disabled", vdev->ndev->name);
3955         }
3956
3957         switch (vdev->config.tx_steering_type) {
3958         case NO_STEERING:
3959                 vxge_debug_init(VXGE_TRACE,
3960                         "%s: Tx steering disabled", vdev->ndev->name);
3961                 break;
3962         case TX_PRIORITY_STEERING:
3963                 vxge_debug_init(VXGE_TRACE,
3964                         "%s: Unsupported tx steering option",
3965                         vdev->ndev->name);
3966                 vxge_debug_init(VXGE_TRACE,
3967                         "%s: Tx steering disabled", vdev->ndev->name);
3968                 vdev->config.tx_steering_type = 0;
3969                 break;
3970         case TX_VLAN_STEERING:
3971                 vxge_debug_init(VXGE_TRACE,
3972                         "%s: Unsupported tx steering option",
3973                         vdev->ndev->name);
3974                 vxge_debug_init(VXGE_TRACE,
3975                         "%s: Tx steering disabled", vdev->ndev->name);
3976                 vdev->config.tx_steering_type = 0;
3977                 break;
3978         case TX_MULTIQ_STEERING:
3979                 vxge_debug_init(VXGE_TRACE,
3980                         "%s: Tx multiqueue steering enabled",
3981                         vdev->ndev->name);
3982                 break;
3983         case TX_PORT_STEERING:
3984                 vxge_debug_init(VXGE_TRACE,
3985                         "%s: Tx port steering enabled",
3986                         vdev->ndev->name);
3987                 break;
3988         default:
3989                 vxge_debug_init(VXGE_ERR,
3990                         "%s: Unsupported tx steering type",
3991                         vdev->ndev->name);
3992                 vxge_debug_init(VXGE_TRACE,
3993                         "%s: Tx steering disabled", vdev->ndev->name);
3994                 vdev->config.tx_steering_type = 0;
3995         }
3996
3997         if (vdev->config.addr_learn_en)
3998                 vxge_debug_init(VXGE_TRACE,
3999                         "%s: MAC Address learning enabled", vdev->ndev->name);
4000
4001         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4002                 if (!vxge_bVALn(vpath_mask, i, 1))
4003                         continue;
4004                 vxge_debug_ll_config(VXGE_TRACE,
4005                         "%s: MTU size - %d", vdev->ndev->name,
4006                         ((vdev->devh))->
4007                                 config.vp_config[i].mtu);
4008                 vxge_debug_init(VXGE_TRACE,
4009                         "%s: VLAN tag stripping %s", vdev->ndev->name,
4010                         ((vdev->devh))->
4011                                 config.vp_config[i].rpa_strip_vlan_tag
4012                         ? "Enabled" : "Disabled");
4013                 vxge_debug_ll_config(VXGE_TRACE,
4014                         "%s: Max frags : %d", vdev->ndev->name,
4015                         ((vdev->devh))->
4016                                 config.vp_config[i].fifo.max_frags);
4017                 break;
4018         }
4019 }
4020
4021 #ifdef CONFIG_PM
4022 /**
4023  * vxge_pm_suspend - vxge power management suspend entry point
4024  *
4025  */
4026 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4027 {
4028         return -ENOSYS;
4029 }
4030 /**
4031  * vxge_pm_resume - vxge power management resume entry point
4032  *
4033  */
4034 static int vxge_pm_resume(struct pci_dev *pdev)
4035 {
4036         return -ENOSYS;
4037 }
4038
4039 #endif
4040
4041 /**
4042  * vxge_io_error_detected - called when PCI error is detected
4043  * @pdev: Pointer to PCI device
4044  * @state: The current pci connection state
4045  *
4046  * This function is called after a PCI bus error affecting
4047  * this device has been detected.
4048  */
4049 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4050                                                 pci_channel_state_t state)
4051 {
4052         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4053         struct net_device *netdev = hldev->ndev;
4054
4055         netif_device_detach(netdev);
4056
4057         if (state == pci_channel_io_perm_failure)
4058                 return PCI_ERS_RESULT_DISCONNECT;
4059
4060         if (netif_running(netdev)) {
4061                 /* Bring down the card, while avoiding PCI I/O */
4062                 do_vxge_close(netdev, 0);
4063         }
4064
4065         pci_disable_device(pdev);
4066
4067         return PCI_ERS_RESULT_NEED_RESET;
4068 }
4069
4070 /**
4071  * vxge_io_slot_reset - called after the pci bus has been reset.
4072  * @pdev: Pointer to PCI device
4073  *
4074  * Restart the card from scratch, as if from a cold-boot.
4075  * At this point, the card has exprienced a hard reset,
4076  * followed by fixups by BIOS, and has its config space
4077  * set up identically to what it was at cold boot.
4078  */
4079 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4080 {
4081         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4082         struct net_device *netdev = hldev->ndev;
4083
4084         struct vxgedev *vdev = netdev_priv(netdev);
4085
4086         if (pci_enable_device(pdev)) {
4087                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4088                 return PCI_ERS_RESULT_DISCONNECT;
4089         }
4090
4091         pci_set_master(pdev);
4092         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4093
4094         return PCI_ERS_RESULT_RECOVERED;
4095 }
4096
4097 /**
4098  * vxge_io_resume - called when traffic can start flowing again.
4099  * @pdev: Pointer to PCI device
4100  *
4101  * This callback is called when the error recovery driver tells
4102  * us that its OK to resume normal operation.
4103  */
4104 static void vxge_io_resume(struct pci_dev *pdev)
4105 {
4106         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4107         struct net_device *netdev = hldev->ndev;
4108
4109         if (netif_running(netdev)) {
4110                 if (vxge_open(netdev)) {
4111                         netdev_err(netdev,
4112                                    "Can't bring device back up after reset\n");
4113                         return;
4114                 }
4115         }
4116
4117         netif_device_attach(netdev);
4118 }
4119
4120 static inline u32 vxge_get_num_vfs(u64 function_mode)
4121 {
4122         u32 num_functions = 0;
4123
4124         switch (function_mode) {
4125         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4126         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4127                 num_functions = 8;
4128                 break;
4129         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4130                 num_functions = 1;
4131                 break;
4132         case VXGE_HW_FUNCTION_MODE_SRIOV:
4133         case VXGE_HW_FUNCTION_MODE_MRIOV:
4134         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4135                 num_functions = 17;
4136                 break;
4137         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4138                 num_functions = 4;
4139                 break;
4140         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4141                 num_functions = 2;
4142                 break;
4143         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4144                 num_functions = 8; /* TODO */
4145                 break;
4146         }
4147         return num_functions;
4148 }
4149
4150 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4151 {
4152         struct __vxge_hw_device *hldev = vdev->devh;
4153         u32 maj, min, bld, cmaj, cmin, cbld;
4154         enum vxge_hw_status status;
4155         const struct firmware *fw;
4156         int ret;
4157
4158         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4159         if (ret) {
4160                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4161                                 VXGE_DRIVER_NAME, fw_name);
4162                 goto out;
4163         }
4164
4165         /* Load the new firmware onto the adapter */
4166         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4167         if (status != VXGE_HW_OK) {
4168                 vxge_debug_init(VXGE_ERR,
4169                                 "%s: FW image download to adapter failed '%s'.",
4170                                 VXGE_DRIVER_NAME, fw_name);
4171                 ret = -EIO;
4172                 goto out;
4173         }
4174
4175         /* Read the version of the new firmware */
4176         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4177         if (status != VXGE_HW_OK) {
4178                 vxge_debug_init(VXGE_ERR,
4179                                 "%s: Upgrade read version failed '%s'.",
4180                                 VXGE_DRIVER_NAME, fw_name);
4181                 ret = -EIO;
4182                 goto out;
4183         }
4184
4185         cmaj = vdev->config.device_hw_info.fw_version.major;
4186         cmin = vdev->config.device_hw_info.fw_version.minor;
4187         cbld = vdev->config.device_hw_info.fw_version.build;
4188         /* It's possible the version in /lib/firmware is not the latest version.
4189          * If so, we could get into a loop of trying to upgrade to the latest
4190          * and flashing the older version.
4191          */
4192         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4193             !override) {
4194                 ret = -EINVAL;
4195                 goto out;
4196         }
4197
4198         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4199                maj, min, bld);
4200
4201         /* Flash the adapter with the new firmware */
4202         status = vxge_hw_flash_fw(hldev);
4203         if (status != VXGE_HW_OK) {
4204                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4205                                 VXGE_DRIVER_NAME, fw_name);
4206                 ret = -EIO;
4207                 goto out;
4208         }
4209
4210         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4211                "hard reset before using, thus requiring a system reboot or a "
4212                "hotplug event.\n");
4213
4214 out:
4215         release_firmware(fw);
4216         return ret;
4217 }
4218
4219 static int vxge_probe_fw_update(struct vxgedev *vdev)
4220 {
4221         u32 maj, min, bld;
4222         int ret, gpxe = 0;
4223         char *fw_name;
4224
4225         maj = vdev->config.device_hw_info.fw_version.major;
4226         min = vdev->config.device_hw_info.fw_version.minor;
4227         bld = vdev->config.device_hw_info.fw_version.build;
4228
4229         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4230                 return 0;
4231
4232         /* Ignore the build number when determining if the current firmware is
4233          * "too new" to load the driver
4234          */
4235         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4236                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4237                                 "version, unable to load driver\n",
4238                                 VXGE_DRIVER_NAME);
4239                 return -EINVAL;
4240         }
4241
4242         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4243          * work with this driver.
4244          */
4245         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4246                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4247                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4248                 return -EINVAL;
4249         }
4250
4251         /* If file not specified, determine gPXE or not */
4252         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4253                 int i;
4254                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4255                         if (vdev->devh->eprom_versions[i]) {
4256                                 gpxe = 1;
4257                                 break;
4258                         }
4259         }
4260         if (gpxe)
4261                 fw_name = "vxge/X3fw-pxe.ncf";
4262         else
4263                 fw_name = "vxge/X3fw.ncf";
4264
4265         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4266         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4267          * probe, so ignore them
4268          */
4269         if (ret != -EINVAL && ret != -ENOENT)
4270                 return -EIO;
4271         else
4272                 ret = 0;
4273
4274         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4275             VXGE_FW_VER(maj, min, 0)) {
4276                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4277                                 " be used with this driver.",
4278                                 VXGE_DRIVER_NAME, maj, min, bld);
4279                 return -EINVAL;
4280         }
4281
4282         return ret;
4283 }
4284
4285 static int is_sriov_initialized(struct pci_dev *pdev)
4286 {
4287         int pos;
4288         u16 ctrl;
4289
4290         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4291         if (pos) {
4292                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4293                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4294                         return 1;
4295         }
4296         return 0;
4297 }
4298
4299 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4300         .link_up = vxge_callback_link_up,
4301         .link_down = vxge_callback_link_down,
4302         .crit_err = vxge_callback_crit_err,
4303 };
4304
4305 /**
4306  * vxge_probe
4307  * @pdev : structure containing the PCI related information of the device.
4308  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4309  * Description:
4310  * This function is called when a new PCI device gets detected and initializes
4311  * it.
4312  * Return value:
4313  * returns 0 on success and negative on failure.
4314  *
4315  */
4316 static int
4317 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4318 {
4319         struct __vxge_hw_device *hldev;
4320         enum vxge_hw_status status;
4321         int ret;
4322         int high_dma = 0;
4323         u64 vpath_mask = 0;
4324         struct vxgedev *vdev;
4325         struct vxge_config *ll_config = NULL;
4326         struct vxge_hw_device_config *device_config = NULL;
4327         struct vxge_hw_device_attr attr;
4328         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4329         u8 *macaddr;
4330         struct vxge_mac_addrs *entry;
4331         static int bus = -1, device = -1;
4332         u32 host_type;
4333         u8 new_device = 0;
4334         enum vxge_hw_status is_privileged;
4335         u32 function_mode;
4336         u32 num_vfs = 0;
4337
4338         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4339         attr.pdev = pdev;
4340
4341         /* In SRIOV-17 mode, functions of the same adapter
4342          * can be deployed on different buses
4343          */
4344         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4345             !pdev->is_virtfn)
4346                 new_device = 1;
4347
4348         bus = pdev->bus->number;
4349         device = PCI_SLOT(pdev->devfn);
4350
4351         if (new_device) {
4352                 if (driver_config->config_dev_cnt &&
4353                    (driver_config->config_dev_cnt !=
4354                         driver_config->total_dev_cnt))
4355                         vxge_debug_init(VXGE_ERR,
4356                                 "%s: Configured %d of %d devices",
4357                                 VXGE_DRIVER_NAME,
4358                                 driver_config->config_dev_cnt,
4359                                 driver_config->total_dev_cnt);
4360                 driver_config->config_dev_cnt = 0;
4361                 driver_config->total_dev_cnt = 0;
4362         }
4363
4364         /* Now making the CPU based no of vpath calculation
4365          * applicable for individual functions as well.
4366          */
4367         driver_config->g_no_cpus = 0;
4368         driver_config->vpath_per_dev = max_config_vpath;
4369
4370         driver_config->total_dev_cnt++;
4371         if (++driver_config->config_dev_cnt > max_config_dev) {
4372                 ret = 0;
4373                 goto _exit0;
4374         }
4375
4376         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4377                 GFP_KERNEL);
4378         if (!device_config) {
4379                 ret = -ENOMEM;
4380                 vxge_debug_init(VXGE_ERR,
4381                         "device_config : malloc failed %s %d",
4382                         __FILE__, __LINE__);
4383                 goto _exit0;
4384         }
4385
4386         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4387         if (!ll_config) {
4388                 ret = -ENOMEM;
4389                 vxge_debug_init(VXGE_ERR,
4390                         "device_config : malloc failed %s %d",
4391                         __FILE__, __LINE__);
4392                 goto _exit0;
4393         }
4394         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4395         ll_config->intr_type = MSI_X;
4396         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4397         ll_config->rth_steering = RTH_STEERING;
4398
4399         /* get the default configuration parameters */
4400         vxge_hw_device_config_default_get(device_config);
4401
4402         /* initialize configuration parameters */
4403         vxge_device_config_init(device_config, &ll_config->intr_type);
4404
4405         ret = pci_enable_device(pdev);
4406         if (ret) {
4407                 vxge_debug_init(VXGE_ERR,
4408                         "%s : can not enable PCI device", __func__);
4409                 goto _exit0;
4410         }
4411
4412         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4413                 vxge_debug_ll_config(VXGE_TRACE,
4414                         "%s : using 64bit DMA", __func__);
4415
4416                 high_dma = 1;
4417
4418                 if (pci_set_consistent_dma_mask(pdev,
4419                                                 DMA_BIT_MASK(64))) {
4420                         vxge_debug_init(VXGE_ERR,
4421                                 "%s : unable to obtain 64bit DMA for "
4422                                 "consistent allocations", __func__);
4423                         ret = -ENOMEM;
4424                         goto _exit1;
4425                 }
4426         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4427                 vxge_debug_ll_config(VXGE_TRACE,
4428                         "%s : using 32bit DMA", __func__);
4429         } else {
4430                 ret = -ENOMEM;
4431                 goto _exit1;
4432         }
4433
4434         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4435         if (ret) {
4436                 vxge_debug_init(VXGE_ERR,
4437                         "%s : request regions failed", __func__);
4438                 goto _exit1;
4439         }
4440
4441         pci_set_master(pdev);
4442
4443         attr.bar0 = pci_ioremap_bar(pdev, 0);
4444         if (!attr.bar0) {
4445                 vxge_debug_init(VXGE_ERR,
4446                         "%s : cannot remap io memory bar0", __func__);
4447                 ret = -ENODEV;
4448                 goto _exit2;
4449         }
4450         vxge_debug_ll_config(VXGE_TRACE,
4451                 "pci ioremap bar0: %p:0x%llx",
4452                 attr.bar0,
4453                 (unsigned long long)pci_resource_start(pdev, 0));
4454
4455         status = vxge_hw_device_hw_info_get(attr.bar0,
4456                         &ll_config->device_hw_info);
4457         if (status != VXGE_HW_OK) {
4458                 vxge_debug_init(VXGE_ERR,
4459                         "%s: Reading of hardware info failed."
4460                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4461                 ret = -EINVAL;
4462                 goto _exit3;
4463         }
4464
4465         vpath_mask = ll_config->device_hw_info.vpath_mask;
4466         if (vpath_mask == 0) {
4467                 vxge_debug_ll_config(VXGE_TRACE,
4468                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4469                 ret = -EINVAL;
4470                 goto _exit3;
4471         }
4472
4473         vxge_debug_ll_config(VXGE_TRACE,
4474                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4475                 (unsigned long long)vpath_mask);
4476
4477         function_mode = ll_config->device_hw_info.function_mode;
4478         host_type = ll_config->device_hw_info.host_type;
4479         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4480                 ll_config->device_hw_info.func_id);
4481
4482         /* Check how many vpaths are available */
4483         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4484                 if (!((vpath_mask) & vxge_mBIT(i)))
4485                         continue;
4486                 max_vpath_supported++;
4487         }
4488
4489         if (new_device)
4490                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4491
4492         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4493         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4494            (ll_config->intr_type != INTA)) {
4495                 ret = pci_enable_sriov(pdev, num_vfs);
4496                 if (ret)
4497                         vxge_debug_ll_config(VXGE_ERR,
4498                                 "Failed in enabling SRIOV mode: %d\n", ret);
4499                         /* No need to fail out, as an error here is non-fatal */
4500         }
4501
4502         /*
4503          * Configure vpaths and get driver configured number of vpaths
4504          * which is less than or equal to the maximum vpaths per function.
4505          */
4506         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4507         if (!no_of_vpath) {
4508                 vxge_debug_ll_config(VXGE_ERR,
4509                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4510                 ret = 0;
4511                 goto _exit3;
4512         }
4513
4514         /* Setting driver callbacks */
4515         attr.uld_callbacks = &vxge_callbacks;
4516
4517         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4518         if (status != VXGE_HW_OK) {
4519                 vxge_debug_init(VXGE_ERR,
4520                         "Failed to initialize device (%d)", status);
4521                         ret = -EINVAL;
4522                         goto _exit3;
4523         }
4524
4525         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4526                         ll_config->device_hw_info.fw_version.minor,
4527                         ll_config->device_hw_info.fw_version.build) >=
4528             VXGE_EPROM_FW_VER) {
4529                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4530
4531                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4532                 if (status != VXGE_HW_OK) {
4533                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4534                                         VXGE_DRIVER_NAME);
4535                         /* This is a non-fatal error, continue */
4536                 }
4537
4538                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4539                         hldev->eprom_versions[i] = img[i].version;
4540                         if (!img[i].is_valid)
4541                                 break;
4542                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4543                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4544                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4545                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4546                                         VXGE_EPROM_IMG_FIX(img[i].version),
4547                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4548                 }
4549         }
4550
4551         /* if FCS stripping is not disabled in MAC fail driver load */
4552         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4553         if (status != VXGE_HW_OK) {
4554                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4555                                 " failing driver load", VXGE_DRIVER_NAME);
4556                 ret = -EINVAL;
4557                 goto _exit4;
4558         }
4559
4560         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4561          * due to the fact that HWTS is using the FCS as the location of the
4562          * timestamp.  The HW FCS checking will still correctly determine if
4563          * there is a valid checksum, and the FCS is being removed by the driver
4564          * anyway.  So no fucntionality is being lost.  Since it is always
4565          * enabled, we now simply use the ioctl call to set whether or not the
4566          * driver should be paying attention to the HWTS.
4567          */
4568         if (is_privileged == VXGE_HW_OK) {
4569                 status = vxge_timestamp_config(hldev);
4570                 if (status != VXGE_HW_OK) {
4571                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4572                                         VXGE_DRIVER_NAME);
4573                         ret = -EFAULT;
4574                         goto _exit4;
4575                 }
4576         }
4577
4578         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4579
4580         /* set private device info */
4581         pci_set_drvdata(pdev, hldev);
4582
4583         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4584         ll_config->addr_learn_en = addr_learn_en;
4585         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4586         ll_config->rth_hash_type_tcpipv4 = 1;
4587         ll_config->rth_hash_type_ipv4 = 0;
4588         ll_config->rth_hash_type_tcpipv6 = 0;
4589         ll_config->rth_hash_type_ipv6 = 0;
4590         ll_config->rth_hash_type_tcpipv6ex = 0;
4591         ll_config->rth_hash_type_ipv6ex = 0;
4592         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4593         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4594         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4595
4596         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4597                                    &vdev);
4598         if (ret) {
4599                 ret = -EINVAL;
4600                 goto _exit4;
4601         }
4602
4603         ret = vxge_probe_fw_update(vdev);
4604         if (ret)
4605                 goto _exit5;
4606
4607         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4608         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4609                 vxge_hw_device_trace_level_get(hldev));
4610
4611         /* set private HW device info */
4612         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4613         vdev->bar0 = attr.bar0;
4614         vdev->max_vpath_supported = max_vpath_supported;
4615         vdev->no_of_vpath = no_of_vpath;
4616
4617         /* Virtual Path count */
4618         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4619                 if (!vxge_bVALn(vpath_mask, i, 1))
4620                         continue;
4621                 if (j >= vdev->no_of_vpath)
4622                         break;
4623
4624                 vdev->vpaths[j].is_configured = 1;
4625                 vdev->vpaths[j].device_id = i;
4626                 vdev->vpaths[j].ring.driver_id = j;
4627                 vdev->vpaths[j].vdev = vdev;
4628                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4629                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4630                                 ll_config->device_hw_info.mac_addrs[i],
4631                                 ETH_ALEN);
4632
4633                 /* Initialize the mac address list header */
4634                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4635
4636                 vdev->vpaths[j].mac_addr_cnt = 0;
4637                 vdev->vpaths[j].mcast_addr_cnt = 0;
4638                 j++;
4639         }
4640         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4641         vdev->max_config_port = max_config_port;
4642
4643         vdev->vlan_tag_strip = vlan_tag_strip;
4644
4645         /* map the hashing selector table to the configured vpaths */
4646         for (i = 0; i < vdev->no_of_vpath; i++)
4647                 vdev->vpath_selector[i] = vpath_selector[i];
4648
4649         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4650
4651         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4652         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4653         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4654
4655         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4656                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4657
4658         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4659                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4660
4661         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4662                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4663
4664         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4665                 vdev->ndev->name, macaddr);
4666
4667         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4668                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4669
4670         vxge_debug_init(VXGE_TRACE,
4671                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4672                 ll_config->device_hw_info.fw_version.version,
4673                 ll_config->device_hw_info.fw_date.date);
4674
4675         if (new_device) {
4676                 switch (ll_config->device_hw_info.function_mode) {
4677                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4678                         vxge_debug_init(VXGE_TRACE,
4679                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4680                 break;
4681                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4682                         vxge_debug_init(VXGE_TRACE,
4683                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4684                 break;
4685                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4686                         vxge_debug_init(VXGE_TRACE,
4687                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4688                 break;
4689                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4690                         vxge_debug_init(VXGE_TRACE,
4691                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4692                 break;
4693                 }
4694         }
4695
4696         vxge_print_parm(vdev, vpath_mask);
4697
4698         /* Store the fw version for ethttool option */
4699         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4700         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4701
4702         /* Copy the station mac address to the list */
4703         for (i = 0; i < vdev->no_of_vpath; i++) {
4704                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4705                 if (NULL == entry) {
4706                         vxge_debug_init(VXGE_ERR,
4707                                 "%s: mac_addr_list : memory allocation failed",
4708                                 vdev->ndev->name);
4709                         ret = -EPERM;
4710                         goto _exit6;
4711                 }
4712                 macaddr = (u8 *)&entry->macaddr;
4713                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4714                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4715                 vdev->vpaths[i].mac_addr_cnt = 1;
4716         }
4717
4718         kfree(device_config);
4719
4720         /*
4721          * INTA is shared in multi-function mode. This is unlike the INTA
4722          * implementation in MR mode, where each VH has its own INTA message.
4723          * - INTA is masked (disabled) as long as at least one function sets
4724          * its TITAN_MASK_ALL_INT.ALARM bit.
4725          * - INTA is unmasked (enabled) when all enabled functions have cleared
4726          * their own TITAN_MASK_ALL_INT.ALARM bit.
4727          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4728          * Though this driver leaves the top level interrupts unmasked while
4729          * leaving the required module interrupt bits masked on exit, there
4730          * could be a rougue driver around that does not follow this procedure
4731          * resulting in a failure to generate interrupts. The following code is
4732          * present to prevent such a failure.
4733          */
4734
4735         if (ll_config->device_hw_info.function_mode ==
4736                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4737                 if (vdev->config.intr_type == INTA)
4738                         vxge_hw_device_unmask_all(hldev);
4739
4740         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4741                 vdev->ndev->name, __func__, __LINE__);
4742
4743         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4744         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4745                 vxge_hw_device_trace_level_get(hldev));
4746
4747         kfree(ll_config);
4748         return 0;
4749
4750 _exit6:
4751         for (i = 0; i < vdev->no_of_vpath; i++)
4752                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4753 _exit5:
4754         vxge_device_unregister(hldev);
4755 _exit4:
4756         vxge_hw_device_terminate(hldev);
4757         pci_disable_sriov(pdev);
4758 _exit3:
4759         iounmap(attr.bar0);
4760 _exit2:
4761         pci_release_region(pdev, 0);
4762 _exit1:
4763         pci_disable_device(pdev);
4764 _exit0:
4765         kfree(ll_config);
4766         kfree(device_config);
4767         driver_config->config_dev_cnt--;
4768         driver_config->total_dev_cnt--;
4769         return ret;
4770 }
4771
4772 /**
4773  * vxge_rem_nic - Free the PCI device
4774  * @pdev: structure containing the PCI related information of the device.
4775  * Description: This function is called by the Pci subsystem to release a
4776  * PCI device and free up all resource held up by the device.
4777  */
4778 static void vxge_remove(struct pci_dev *pdev)
4779 {
4780         struct __vxge_hw_device *hldev;
4781         struct vxgedev *vdev;
4782         int i;
4783
4784         hldev = pci_get_drvdata(pdev);
4785         if (hldev == NULL)
4786                 return;
4787
4788         vdev = netdev_priv(hldev->ndev);
4789
4790         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4791         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4792                         __func__);
4793
4794         for (i = 0; i < vdev->no_of_vpath; i++)
4795                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4796
4797         vxge_device_unregister(hldev);
4798         /* Do not call pci_disable_sriov here, as it will break child devices */
4799         vxge_hw_device_terminate(hldev);
4800         iounmap(vdev->bar0);
4801         pci_release_region(pdev, 0);
4802         pci_disable_device(pdev);
4803         driver_config->config_dev_cnt--;
4804         driver_config->total_dev_cnt--;
4805
4806         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4807                         __func__, __LINE__);
4808         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4809                              __LINE__);
4810 }
4811
4812 static const struct pci_error_handlers vxge_err_handler = {
4813         .error_detected = vxge_io_error_detected,
4814         .slot_reset = vxge_io_slot_reset,
4815         .resume = vxge_io_resume,
4816 };
4817
4818 static struct pci_driver vxge_driver = {
4819         .name = VXGE_DRIVER_NAME,
4820         .id_table = vxge_id_table,
4821         .probe = vxge_probe,
4822         .remove = vxge_remove,
4823 #ifdef CONFIG_PM
4824         .suspend = vxge_pm_suspend,
4825         .resume = vxge_pm_resume,
4826 #endif
4827         .err_handler = &vxge_err_handler,
4828 };
4829
4830 static int __init
4831 vxge_starter(void)
4832 {
4833         int ret = 0;
4834
4835         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4836         pr_info("Driver version: %s\n", DRV_VERSION);
4837
4838         verify_bandwidth();
4839
4840         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4841         if (!driver_config)
4842                 return -ENOMEM;
4843
4844         ret = pci_register_driver(&vxge_driver);
4845         if (ret) {
4846                 kfree(driver_config);
4847                 goto err;
4848         }
4849
4850         if (driver_config->config_dev_cnt &&
4851            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4852                 vxge_debug_init(VXGE_ERR,
4853                         "%s: Configured %d of %d devices",
4854                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4855                         driver_config->total_dev_cnt);
4856 err:
4857         return ret;
4858 }
4859
4860 static void __exit
4861 vxge_closer(void)
4862 {
4863         pci_unregister_driver(&vxge_driver);
4864         kfree(driver_config);
4865 }
4866 module_init(vxge_starter);
4867 module_exit(vxge_closer);