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
  91 static inline int is_vxge_card_up(struct vxgedev *vdev)
  92 {
  93         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  94 }
  95
  96 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  97 {
  98         struct sk_buff **skb_ptr = NULL;
  99         struct sk_buff **temp;
 100 #define NR_SKB_COMPLETED 128
 101         struct sk_buff *completed[NR_SKB_COMPLETED];
 102         int more;
 103
 104         do {
 105                 more = 0;
 106                 skb_ptr = completed;
 107
 108                 if (__netif_tx_trylock(fifo->txq)) {
 109                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 110                                                 NR_SKB_COMPLETED, &more);
 111                         __netif_tx_unlock(fifo->txq);
 112                 }
 113
 114                 /* free SKBs */
 115                 for (temp = completed; temp != skb_ptr; temp++)
 116                         dev_kfree_skb_irq(*temp);
 117         } while (more);
 118 }
 119
 120 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 121 {
 122         int i;
 123
 124         /* Complete all transmits */
 125         for (i = 0; i < vdev->no_of_vpath; i++)
 126                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 127 }
 128
 129 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 130 {
 131         int i;
 132         struct vxge_ring *ring;
 133
 134         /* Complete all receives*/
 135         for (i = 0; i < vdev->no_of_vpath; i++) {
 136                 ring = &vdev->vpaths[i].ring;
 137                 vxge_hw_vpath_poll_rx(ring->handle);
 138         }
 139 }
 140
 141 /*
 142  * vxge_callback_link_up
 143  *
 144  * This function is called during interrupt context to notify link up state
 145  * change.
 146  */
 147 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 148 {
 149         struct net_device *dev = hldev->ndev;
 150         struct vxgedev *vdev = netdev_priv(dev);
 151
 152         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 153                 vdev->ndev->name, __func__, __LINE__);
 154         netdev_notice(vdev->ndev, "Link Up\n");
 155         vdev->stats.link_up++;
 156
 157         netif_carrier_on(vdev->ndev);
 158         netif_tx_wake_all_queues(vdev->ndev);
 159
 160         vxge_debug_entryexit(VXGE_TRACE,
 161                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 162 }
 163
 164 /*
 165  * vxge_callback_link_down
 166  *
 167  * This function is called during interrupt context to notify link down state
 168  * change.
 169  */
 170 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 171 {
 172         struct net_device *dev = hldev->ndev;
 173         struct vxgedev *vdev = netdev_priv(dev);
 174
 175         vxge_debug_entryexit(VXGE_TRACE,
 176                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 177         netdev_notice(vdev->ndev, "Link Down\n");
 178
 179         vdev->stats.link_down++;
 180         netif_carrier_off(vdev->ndev);
 181         netif_tx_stop_all_queues(vdev->ndev);
 182
 183         vxge_debug_entryexit(VXGE_TRACE,
 184                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 185 }
 186
 187 /*
 188  * vxge_rx_alloc
 189  *
 190  * Allocate SKB.
 191  */
 192 static struct sk_buff *
 193 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 194 {
 195         struct net_device    *dev;
 196         struct sk_buff       *skb;
 197         struct vxge_rx_priv *rx_priv;
 198
 199         dev = ring->ndev;
 200         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 201                 ring->ndev->name, __func__, __LINE__);
 202
 203         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 204
 205         /* try to allocate skb first. this one may fail */
 206         skb = netdev_alloc_skb(dev, skb_size +
 207         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 208         if (skb == NULL) {
 209                 vxge_debug_mem(VXGE_ERR,
 210                         "%s: out of memory to allocate SKB", dev->name);
 211                 ring->stats.skb_alloc_fail++;
 212                 return NULL;
 213         }
 214
 215         vxge_debug_mem(VXGE_TRACE,
 216                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 217                 __func__, __LINE__, skb);
 218
 219         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 220
 221         rx_priv->skb = skb;
 222         rx_priv->skb_data = NULL;
 223         rx_priv->data_size = skb_size;
 224         vxge_debug_entryexit(VXGE_TRACE,
 225                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 226
 227         return skb;
 228 }
 229
 230 /*
 231  * vxge_rx_map
 232  */
 233 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 234 {
 235         struct vxge_rx_priv *rx_priv;
 236         dma_addr_t dma_addr;
 237
 238         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 239                 ring->ndev->name, __func__, __LINE__);
 240         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 241
 242         rx_priv->skb_data = rx_priv->skb->data;
 243         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 244                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 245
 246         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 247                 ring->stats.pci_map_fail++;
 248                 return -EIO;
 249         }
 250         vxge_debug_mem(VXGE_TRACE,
 251                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 252                 ring->ndev->name, __func__, __LINE__,
 253                 (unsigned long long)dma_addr);
 254         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 255
 256         rx_priv->data_dma = dma_addr;
 257         vxge_debug_entryexit(VXGE_TRACE,
 258                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 259
 260         return 0;
 261 }
 262
 263 /*
 264  * vxge_rx_initial_replenish
 265  * Allocation of RxD as an initial replenish procedure.
 266  */
 267 static enum vxge_hw_status
 268 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 269 {
 270         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 271         struct vxge_rx_priv *rx_priv;
 272
 273         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 274                 ring->ndev->name, __func__, __LINE__);
 275         if (vxge_rx_alloc(dtrh, ring,
 276                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 277                 return VXGE_HW_FAIL;
 278
 279         if (vxge_rx_map(dtrh, ring)) {
 280                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 281                 dev_kfree_skb(rx_priv->skb);
 282
 283                 return VXGE_HW_FAIL;
 284         }
 285         vxge_debug_entryexit(VXGE_TRACE,
 286                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 287
 288         return VXGE_HW_OK;
 289 }
 290
 291 static inline void
 292 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 293                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 294 {
 295
 296         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 297                         ring->ndev->name, __func__, __LINE__);
 298         skb_record_rx_queue(skb, ring->driver_id);
 299         skb->protocol = eth_type_trans(skb, ring->ndev);
 300
 301         u64_stats_update_begin(&ring->stats.syncp);
 302         ring->stats.rx_frms++;
 303         ring->stats.rx_bytes += pkt_length;
 304
 305         if (skb->pkt_type == PACKET_MULTICAST)
 306                 ring->stats.rx_mcast++;
 307         u64_stats_update_end(&ring->stats.syncp);
 308
 309         vxge_debug_rx(VXGE_TRACE,
 310                 "%s: %s:%d  skb protocol = %d",
 311                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 312
 313         if (ext_info->vlan &&
 314             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 315                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 316         napi_gro_receive(ring->napi_p, skb);
 317
 318         vxge_debug_entryexit(VXGE_TRACE,
 319                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 320 }
 321
 322 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 323                                     struct vxge_rx_priv *rx_priv)
 324 {
 325         pci_dma_sync_single_for_device(ring->pdev,
 326                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 327
 328         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 329         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 330 }
 331
 332 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 333                              void *post_dtr, struct __vxge_hw_ring *ringh)
 334 {
 335         int dtr_count = *dtr_cnt;
 336         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 337                 if (*first_dtr)
 338                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 339                 *first_dtr = post_dtr;
 340         } else
 341                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 342         dtr_count++;
 343         *dtr_cnt = dtr_count;
 344 }
 345
 346 /*
 347  * vxge_rx_1b_compl
 348  *
 349  * If the interrupt is because of a received frame or if the receive ring
 350  * contains fresh as yet un-processed frames, this function is called.
 351  */
 352 static enum vxge_hw_status
 353 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 354                  u8 t_code, void *userdata)
 355 {
 356         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 357         struct net_device *dev = ring->ndev;
 358         unsigned int dma_sizes;
 359         void *first_dtr = NULL;
 360         int dtr_cnt = 0;
 361         int data_size;
 362         dma_addr_t data_dma;
 363         int pkt_length;
 364         struct sk_buff *skb;
 365         struct vxge_rx_priv *rx_priv;
 366         struct vxge_hw_ring_rxd_info ext_info;
 367         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 368                 ring->ndev->name, __func__, __LINE__);
 369
 370         do {
 371                 prefetch((char *)dtr + L1_CACHE_BYTES);
 372                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 373                 skb = rx_priv->skb;
 374                 data_size = rx_priv->data_size;
 375                 data_dma = rx_priv->data_dma;
 376                 prefetch(rx_priv->skb_data);
 377
 378                 vxge_debug_rx(VXGE_TRACE,
 379                         "%s: %s:%d  skb = 0x%p",
 380                         ring->ndev->name, __func__, __LINE__, skb);
 381
 382                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 383                 pkt_length = dma_sizes;
 384
 385                 pkt_length -= ETH_FCS_LEN;
 386
 387                 vxge_debug_rx(VXGE_TRACE,
 388                         "%s: %s:%d  Packet Length = %d",
 389                         ring->ndev->name, __func__, __LINE__, pkt_length);
 390
 391                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 392
 393                 /* check skb validity */
 394                 vxge_assert(skb);
 395
 396                 prefetch((char *)skb + L1_CACHE_BYTES);
 397                 if (unlikely(t_code)) {
 398                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 399                                 VXGE_HW_OK) {
 400
 401                                 ring->stats.rx_errors++;
 402                                 vxge_debug_rx(VXGE_TRACE,
 403                                         "%s: %s :%d Rx T_code is %d",
 404                                         ring->ndev->name, __func__,
 405                                         __LINE__, t_code);
 406
 407                                 /* If the t_code is not supported and if the
 408                                  * t_code is other than 0x5 (unparseable packet
 409                                  * such as unknown UPV6 header), Drop it !!!
 410                                  */
 411                                 vxge_re_pre_post(dtr, ring, rx_priv);
 412
 413                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 414                                 ring->stats.rx_dropped++;
 415                                 continue;
 416                         }
 417                 }
 418
 419                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 420                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 421                                 if (!vxge_rx_map(dtr, ring)) {
 422                                         skb_put(skb, pkt_length);
 423
 424                                         pci_unmap_single(ring->pdev, data_dma,
 425                                                 data_size, PCI_DMA_FROMDEVICE);
 426
 427                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 428                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 429                                                 ringh);
 430                                 } else {
 431                                         dev_kfree_skb(rx_priv->skb);
 432                                         rx_priv->skb = skb;
 433                                         rx_priv->data_size = data_size;
 434                                         vxge_re_pre_post(dtr, ring, rx_priv);
 435
 436                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 437                                                 ringh);
 438                                         ring->stats.rx_dropped++;
 439                                         break;
 440                                 }
 441                         } else {
 442                                 vxge_re_pre_post(dtr, ring, rx_priv);
 443
 444                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 445                                 ring->stats.rx_dropped++;
 446                                 break;
 447                         }
 448                 } else {
 449                         struct sk_buff *skb_up;
 450
 451                         skb_up = netdev_alloc_skb(dev, pkt_length +
 452                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 453                         if (skb_up != NULL) {
 454                                 skb_reserve(skb_up,
 455                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 456
 457                                 pci_dma_sync_single_for_cpu(ring->pdev,
 458                                         data_dma, data_size,
 459                                         PCI_DMA_FROMDEVICE);
 460
 461                                 vxge_debug_mem(VXGE_TRACE,
 462                                         "%s: %s:%d  skb_up = %p",
 463                                         ring->ndev->name, __func__,
 464                                         __LINE__, skb);
 465                                 memcpy(skb_up->data, skb->data, pkt_length);
 466
 467                                 vxge_re_pre_post(dtr, ring, rx_priv);
 468
 469                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 470                                         ringh);
 471                                 /* will netif_rx small SKB instead */
 472                                 skb = skb_up;
 473                                 skb_put(skb, pkt_length);
 474                         } else {
 475                                 vxge_re_pre_post(dtr, ring, rx_priv);
 476
 477                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 478                                 vxge_debug_rx(VXGE_ERR,
 479                                         "%s: vxge_rx_1b_compl: out of "
 480                                         "memory", dev->name);
 481                                 ring->stats.skb_alloc_fail++;
 482                                 break;
 483                         }
 484                 }
 485
 486                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 487                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 488                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 489                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 490                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 491                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 492                 else
 493                         skb_checksum_none_assert(skb);
 494
 495
 496                 if (ring->rx_hwts) {
 497                         struct skb_shared_hwtstamps *skb_hwts;
 498                         u32 ns = *(u32 *)(skb->head + pkt_length);
 499
 500                         skb_hwts = skb_hwtstamps(skb);
 501                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 502                         skb_hwts->syststamp.tv64 = 0;
 503                 }
 504
 505                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 506                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 507                  * if rss is disabled/enabled, so key off of that.
 508                  */
 509                 if (ext_info.rth_value)
 510                         skb->rxhash = ext_info.rth_value;
 511
 512                 vxge_rx_complete(ring, skb, ext_info.vlan,
 513                         pkt_length, &ext_info);
 514
 515                 ring->budget--;
 516                 ring->pkts_processed++;
 517                 if (!ring->budget)
 518                         break;
 519
 520         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 521                 &t_code) == VXGE_HW_OK);
 522
 523         if (first_dtr)
 524                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 525
 526         vxge_debug_entryexit(VXGE_TRACE,
 527                                 "%s:%d  Exiting...",
 528                                 __func__, __LINE__);
 529         return VXGE_HW_OK;
 530 }
 531
 532 /*
 533  * vxge_xmit_compl
 534  *
 535  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 536  * this function is called. It identifies the last TxD whose buffer was
 537  * freed and frees all skbs whose data have already DMA'ed into the NICs
 538  * internal memory.
 539  */
 540 static enum vxge_hw_status
 541 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 542                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 543                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 544 {
 545         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 546         struct sk_buff *skb, **done_skb = *skb_ptr;
 547         int pkt_cnt = 0;
 548
 549         vxge_debug_entryexit(VXGE_TRACE,
 550                 "%s:%d Entered....", __func__, __LINE__);
 551
 552         do {
 553                 int frg_cnt;
 554                 skb_frag_t *frag;
 555                 int i = 0, j;
 556                 struct vxge_tx_priv *txd_priv =
 557                         vxge_hw_fifo_txdl_private_get(dtr);
 558
 559                 skb = txd_priv->skb;
 560                 frg_cnt = skb_shinfo(skb)->nr_frags;
 561                 frag = &skb_shinfo(skb)->frags[0];
 562
 563                 vxge_debug_tx(VXGE_TRACE,
 564                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 565                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 566                                 __LINE__, fifo_hw, dtr, t_code);
 567                 /* check skb validity */
 568                 vxge_assert(skb);
 569                 vxge_debug_tx(VXGE_TRACE,
 570                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 571                         fifo->ndev->name, __func__, __LINE__,
 572                         skb, txd_priv, frg_cnt);
 573                 if (unlikely(t_code)) {
 574                         fifo->stats.tx_errors++;
 575                         vxge_debug_tx(VXGE_ERR,
 576                                 "%s: tx: dtr %p completed due to "
 577                                 "error t_code %01x", fifo->ndev->name,
 578                                 dtr, t_code);
 579                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 580                 }
 581
 582                 /*  for unfragmented skb */
 583                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 584                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 585
 586                 for (j = 0; j < frg_cnt; j++) {
 587                         pci_unmap_page(fifo->pdev,
 588                                         txd_priv->dma_buffers[i++],
 589                                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 590                         frag += 1;
 591                 }
 592
 593                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 594
 595                 /* Updating the statistics block */
 596                 u64_stats_update_begin(&fifo->stats.syncp);
 597                 fifo->stats.tx_frms++;
 598                 fifo->stats.tx_bytes += skb->len;
 599                 u64_stats_update_end(&fifo->stats.syncp);
 600
 601                 *done_skb++ = skb;
 602
 603                 if (--nr_skb <= 0) {
 604                         *more = 1;
 605                         break;
 606                 }
 607
 608                 pkt_cnt++;
 609                 if (pkt_cnt > fifo->indicate_max_pkts)
 610                         break;
 611
 612         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 613                                 &dtr, &t_code) == VXGE_HW_OK);
 614
 615         *skb_ptr = done_skb;
 616         if (netif_tx_queue_stopped(fifo->txq))
 617                 netif_tx_wake_queue(fifo->txq);
 618
 619         vxge_debug_entryexit(VXGE_TRACE,
 620                                 "%s: %s:%d  Exiting...",
 621                                 fifo->ndev->name, __func__, __LINE__);
 622         return VXGE_HW_OK;
 623 }
 624
 625 /* select a vpath to transmit the packet */
 626 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 627 {
 628         u16 queue_len, counter = 0;
 629         if (skb->protocol == htons(ETH_P_IP)) {
 630                 struct iphdr *ip;
 631                 struct tcphdr *th;
 632
 633                 ip = ip_hdr(skb);
 634
 635                 if (!ip_is_fragment(ip)) {
 636                         th = (struct tcphdr *)(((unsigned char *)ip) +
 637                                         ip->ihl*4);
 638
 639                         queue_len = vdev->no_of_vpath;
 640                         counter = (ntohs(th->source) +
 641                                 ntohs(th->dest)) &
 642                                 vdev->vpath_selector[queue_len - 1];
 643                         if (counter >= queue_len)
 644                                 counter = queue_len - 1;
 645                 }
 646         }
 647         return counter;
 648 }
 649
 650 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 651         struct vxge_vpath *vpath, u64 del_mac)
 652 {
 653         struct list_head *entry, *next;
 654         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 655                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 656                         return TRUE;
 657         }
 658         return FALSE;
 659 }
 660
 661 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 662 {
 663         struct vxge_mac_addrs *new_mac_entry;
 664         u8 *mac_address = NULL;
 665
 666         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 667                 return TRUE;
 668
 669         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 670         if (!new_mac_entry) {
 671                 vxge_debug_mem(VXGE_ERR,
 672                         "%s: memory allocation failed",
 673                         VXGE_DRIVER_NAME);
 674                 return FALSE;
 675         }
 676
 677         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 678
 679         /* Copy the new mac address to the list */
 680         mac_address = (u8 *)&new_mac_entry->macaddr;
 681         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 682
 683         new_mac_entry->state = mac->state;
 684         vpath->mac_addr_cnt++;
 685
 686         if (is_multicast_ether_addr(mac->macaddr))
 687                 vpath->mcast_addr_cnt++;
 688
 689         return TRUE;
 690 }
 691
 692 /* Add a mac address to DA table */
 693 static enum vxge_hw_status
 694 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 695 {
 696         enum vxge_hw_status status = VXGE_HW_OK;
 697         struct vxge_vpath *vpath;
 698         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 699
 700         if (is_multicast_ether_addr(mac->macaddr))
 701                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 702         else
 703                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 704
 705         vpath = &vdev->vpaths[mac->vpath_no];
 706         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 707                                                 mac->macmask, duplicate_mode);
 708         if (status != VXGE_HW_OK) {
 709                 vxge_debug_init(VXGE_ERR,
 710                         "DA config add entry failed for vpath:%d",
 711                         vpath->device_id);
 712         } else
 713                 if (FALSE == vxge_mac_list_add(vpath, mac))
 714                         status = -EPERM;
 715
 716         return status;
 717 }
 718
 719 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 720 {
 721         struct macInfo mac_info;
 722         u8 *mac_address = NULL;
 723         u64 mac_addr = 0, vpath_vector = 0;
 724         int vpath_idx = 0;
 725         enum vxge_hw_status status = VXGE_HW_OK;
 726         struct vxge_vpath *vpath = NULL;
 727         struct __vxge_hw_device *hldev;
 728
 729         hldev = pci_get_drvdata(vdev->pdev);
 730
 731         mac_address = (u8 *)&mac_addr;
 732         memcpy(mac_address, mac_header, ETH_ALEN);
 733
 734         /* Is this mac address already in the list? */
 735         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 736                 vpath = &vdev->vpaths[vpath_idx];
 737                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 738                         return vpath_idx;
 739         }
 740
 741         memset(&mac_info, 0, sizeof(struct macInfo));
 742         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 743
 744         /* Any vpath has room to add mac address to its da table? */
 745         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 746                 vpath = &vdev->vpaths[vpath_idx];
 747                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 748                         /* Add this mac address to this vpath */
 749                         mac_info.vpath_no = vpath_idx;
 750                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 751                         status = vxge_add_mac_addr(vdev, &mac_info);
 752                         if (status != VXGE_HW_OK)
 753                                 return -EPERM;
 754                         return vpath_idx;
 755                 }
 756         }
 757
 758         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 759         vpath_idx = 0;
 760         mac_info.vpath_no = vpath_idx;
 761         /* Is the first vpath already selected as catch-basin ? */
 762         vpath = &vdev->vpaths[vpath_idx];
 763         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 764                 /* Add this mac address to this vpath */
 765                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 766                         return -EPERM;
 767                 return vpath_idx;
 768         }
 769
 770         /* Select first vpath as catch-basin */
 771         vpath_vector = vxge_mBIT(vpath->device_id);
 772         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 773                                 vxge_hw_mgmt_reg_type_mrpcim,
 774                                 0,
 775                                 (ulong)offsetof(
 776                                         struct vxge_hw_mrpcim_reg,
 777                                         rts_mgr_cbasin_cfg),
 778                                 vpath_vector);
 779         if (status != VXGE_HW_OK) {
 780                 vxge_debug_tx(VXGE_ERR,
 781                         "%s: Unable to set the vpath-%d in catch-basin mode",
 782                         VXGE_DRIVER_NAME, vpath->device_id);
 783                 return -EPERM;
 784         }
 785
 786         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 787                 return -EPERM;
 788
 789         return vpath_idx;
 790 }
 791
 792 /**
 793  * vxge_xmit
 794  * @skb : the socket buffer containing the Tx data.
 795  * @dev : device pointer.
 796  *
 797  * This function is the Tx entry point of the driver. Neterion NIC supports
 798  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 799 */
 800 static netdev_tx_t
 801 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 802 {
 803         struct vxge_fifo *fifo = NULL;
 804         void *dtr_priv;
 805         void *dtr = NULL;
 806         struct vxgedev *vdev = NULL;
 807         enum vxge_hw_status status;
 808         int frg_cnt, first_frg_len;
 809         skb_frag_t *frag;
 810         int i = 0, j = 0, avail;
 811         u64 dma_pointer;
 812         struct vxge_tx_priv *txdl_priv = NULL;
 813         struct __vxge_hw_fifo *fifo_hw;
 814         int offload_type;
 815         int vpath_no = 0;
 816
 817         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 818                         dev->name, __func__, __LINE__);
 819
 820         /* A buffer with no data will be dropped */
 821         if (unlikely(skb->len <= 0)) {
 822                 vxge_debug_tx(VXGE_ERR,
 823                         "%s: Buffer has no data..", dev->name);
 824                 dev_kfree_skb(skb);
 825                 return NETDEV_TX_OK;
 826         }
 827
 828         vdev = netdev_priv(dev);
 829
 830         if (unlikely(!is_vxge_card_up(vdev))) {
 831                 vxge_debug_tx(VXGE_ERR,
 832                         "%s: vdev not initialized", dev->name);
 833                 dev_kfree_skb(skb);
 834                 return NETDEV_TX_OK;
 835         }
 836
 837         if (vdev->config.addr_learn_en) {
 838                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 839                 if (vpath_no == -EPERM) {
 840                         vxge_debug_tx(VXGE_ERR,
 841                                 "%s: Failed to store the mac address",
 842                                 dev->name);
 843                         dev_kfree_skb(skb);
 844                         return NETDEV_TX_OK;
 845                 }
 846         }
 847
 848         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 849                 vpath_no = skb_get_queue_mapping(skb);
 850         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 851                 vpath_no = vxge_get_vpath_no(vdev, skb);
 852
 853         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 854
 855         if (vpath_no >= vdev->no_of_vpath)
 856                 vpath_no = 0;
 857
 858         fifo = &vdev->vpaths[vpath_no].fifo;
 859         fifo_hw = fifo->handle;
 860
 861         if (netif_tx_queue_stopped(fifo->txq))
 862                 return NETDEV_TX_BUSY;
 863
 864         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 865         if (avail == 0) {
 866                 vxge_debug_tx(VXGE_ERR,
 867                         "%s: No free TXDs available", dev->name);
 868                 fifo->stats.txd_not_free++;
 869                 goto _exit0;
 870         }
 871
 872         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 873          * completion will resume the queue.
 874          */
 875         if (avail == 1)
 876                 netif_tx_stop_queue(fifo->txq);
 877
 878         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 879         if (unlikely(status != VXGE_HW_OK)) {
 880                 vxge_debug_tx(VXGE_ERR,
 881                    "%s: Out of descriptors .", dev->name);
 882                 fifo->stats.txd_out_of_desc++;
 883                 goto _exit0;
 884         }
 885
 886         vxge_debug_tx(VXGE_TRACE,
 887                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 888                 dev->name, __func__, __LINE__,
 889                 fifo_hw, dtr, dtr_priv);
 890
 891         if (vlan_tx_tag_present(skb)) {
 892                 u16 vlan_tag = vlan_tx_tag_get(skb);
 893                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 894         }
 895
 896         first_frg_len = skb_headlen(skb);
 897
 898         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 899                                 PCI_DMA_TODEVICE);
 900
 901         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 902                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 903                 fifo->stats.pci_map_fail++;
 904                 goto _exit0;
 905         }
 906
 907         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 908         txdl_priv->skb = skb;
 909         txdl_priv->dma_buffers[j] = dma_pointer;
 910
 911         frg_cnt = skb_shinfo(skb)->nr_frags;
 912         vxge_debug_tx(VXGE_TRACE,
 913                         "%s: %s:%d skb = %p txdl_priv = %p "
 914                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 915                         __func__, __LINE__, skb, txdl_priv,
 916                         frg_cnt, (unsigned long long)dma_pointer);
 917
 918         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 919                 first_frg_len);
 920
 921         frag = &skb_shinfo(skb)->frags[0];
 922         for (i = 0; i < frg_cnt; i++) {
 923                 /* ignore 0 length fragment */
 924                 if (!skb_frag_size(frag))
 925                         continue;
 926
 927                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 928                                                     0, skb_frag_size(frag),
 929                                                     DMA_TO_DEVICE);
 930
 931                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 932                         goto _exit2;
 933                 vxge_debug_tx(VXGE_TRACE,
 934                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 935                                 dev->name, __func__, __LINE__, i,
 936                                 (unsigned long long)dma_pointer);
 937
 938                 txdl_priv->dma_buffers[j] = dma_pointer;
 939                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 940                                         skb_frag_size(frag));
 941                 frag += 1;
 942         }
 943
 944         offload_type = vxge_offload_type(skb);
 945
 946         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 947                 int mss = vxge_tcp_mss(skb);
 948                 if (mss) {
 949                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 950                                 dev->name, __func__, __LINE__, mss);
 951                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 952                 } else {
 953                         vxge_assert(skb->len <=
 954                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 955                         vxge_assert(0);
 956                         goto _exit1;
 957                 }
 958         }
 959
 960         if (skb->ip_summed == CHECKSUM_PARTIAL)
 961                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 962                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 963                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 964                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 965
 966         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 967
 968         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 969                 dev->name, __func__, __LINE__);
 970         return NETDEV_TX_OK;
 971
 972 _exit2:
 973         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 974 _exit1:
 975         j = 0;
 976         frag = &skb_shinfo(skb)->frags[0];
 977
 978         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 979                         skb_headlen(skb), PCI_DMA_TODEVICE);
 980
 981         for (; j < i; j++) {
 982                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 983                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 984                 frag += 1;
 985         }
 986
 987         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 988 _exit0:
 989         netif_tx_stop_queue(fifo->txq);
 990         dev_kfree_skb(skb);
 991
 992         return NETDEV_TX_OK;
 993 }
 994
 995 /*
 996  * vxge_rx_term
 997  *
 998  * Function will be called by hw function to abort all outstanding receive
 999  * descriptors.
1000  */
1001 static void
1002 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1003 {
1004         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1005         struct vxge_rx_priv *rx_priv =
1006                 vxge_hw_ring_rxd_private_get(dtrh);
1007
1008         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1009                         ring->ndev->name, __func__, __LINE__);
1010         if (state != VXGE_HW_RXD_STATE_POSTED)
1011                 return;
1012
1013         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1014                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1015
1016         dev_kfree_skb(rx_priv->skb);
1017         rx_priv->skb_data = NULL;
1018
1019         vxge_debug_entryexit(VXGE_TRACE,
1020                 "%s: %s:%d  Exiting...",
1021                 ring->ndev->name, __func__, __LINE__);
1022 }
1023
1024 /*
1025  * vxge_tx_term
1026  *
1027  * Function will be called to abort all outstanding tx descriptors
1028  */
1029 static void
1030 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1031 {
1032         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1033         skb_frag_t *frag;
1034         int i = 0, j, frg_cnt;
1035         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1036         struct sk_buff *skb = txd_priv->skb;
1037
1038         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1039
1040         if (state != VXGE_HW_TXDL_STATE_POSTED)
1041                 return;
1042
1043         /* check skb validity */
1044         vxge_assert(skb);
1045         frg_cnt = skb_shinfo(skb)->nr_frags;
1046         frag = &skb_shinfo(skb)->frags[0];
1047
1048         /*  for unfragmented skb */
1049         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1050                 skb_headlen(skb), PCI_DMA_TODEVICE);
1051
1052         for (j = 0; j < frg_cnt; j++) {
1053                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1054                                skb_frag_size(frag), PCI_DMA_TODEVICE);
1055                 frag += 1;
1056         }
1057
1058         dev_kfree_skb(skb);
1059
1060         vxge_debug_entryexit(VXGE_TRACE,
1061                 "%s:%d  Exiting...", __func__, __LINE__);
1062 }
1063
1064 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1065 {
1066         struct list_head *entry, *next;
1067         u64 del_mac = 0;
1068         u8 *mac_address = (u8 *) (&del_mac);
1069
1070         /* Copy the mac address to delete from the list */
1071         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1072
1073         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1074                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1075                         list_del(entry);
1076                         kfree((struct vxge_mac_addrs *)entry);
1077                         vpath->mac_addr_cnt--;
1078
1079                         if (is_multicast_ether_addr(mac->macaddr))
1080                                 vpath->mcast_addr_cnt--;
1081                         return TRUE;
1082                 }
1083         }
1084
1085         return FALSE;
1086 }
1087
1088 /* delete a mac address from DA table */
1089 static enum vxge_hw_status
1090 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1091 {
1092         enum vxge_hw_status status = VXGE_HW_OK;
1093         struct vxge_vpath *vpath;
1094
1095         vpath = &vdev->vpaths[mac->vpath_no];
1096         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1097                                                 mac->macmask);
1098         if (status != VXGE_HW_OK) {
1099                 vxge_debug_init(VXGE_ERR,
1100                         "DA config delete entry failed for vpath:%d",
1101                         vpath->device_id);
1102         } else
1103                 vxge_mac_list_del(vpath, mac);
1104         return status;
1105 }
1106
1107 /**
1108  * vxge_set_multicast
1109  * @dev: pointer to the device structure
1110  *
1111  * Entry point for multicast address enable/disable
1112  * This function is a driver entry point which gets called by the kernel
1113  * whenever multicast addresses must be enabled/disabled. This also gets
1114  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1115  * determine, if multicast address must be enabled or if promiscuous mode
1116  * is to be disabled etc.
1117  */
1118 static void vxge_set_multicast(struct net_device *dev)
1119 {
1120         struct netdev_hw_addr *ha;
1121         struct vxgedev *vdev;
1122         int i, mcast_cnt = 0;
1123         struct __vxge_hw_device *hldev;
1124         struct vxge_vpath *vpath;
1125         enum vxge_hw_status status = VXGE_HW_OK;
1126         struct macInfo mac_info;
1127         int vpath_idx = 0;
1128         struct vxge_mac_addrs *mac_entry;
1129         struct list_head *list_head;
1130         struct list_head *entry, *next;
1131         u8 *mac_address = NULL;
1132
1133         vxge_debug_entryexit(VXGE_TRACE,
1134                 "%s:%d", __func__, __LINE__);
1135
1136         vdev = netdev_priv(dev);
1137         hldev = vdev->devh;
1138
1139         if (unlikely(!is_vxge_card_up(vdev)))
1140                 return;
1141
1142         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1143                 for (i = 0; i < vdev->no_of_vpath; i++) {
1144                         vpath = &vdev->vpaths[i];
1145                         vxge_assert(vpath->is_open);
1146                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1147                         if (status != VXGE_HW_OK)
1148                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1149                                                 "multicast, status %d", status);
1150                         vdev->all_multi_flg = 1;
1151                 }
1152         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1153                 for (i = 0; i < vdev->no_of_vpath; i++) {
1154                         vpath = &vdev->vpaths[i];
1155                         vxge_assert(vpath->is_open);
1156                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1157                         if (status != VXGE_HW_OK)
1158                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1159                                                 "multicast, status %d", status);
1160                         vdev->all_multi_flg = 0;
1161                 }
1162         }
1163
1164
1165         if (!vdev->config.addr_learn_en) {
1166                 for (i = 0; i < vdev->no_of_vpath; i++) {
1167                         vpath = &vdev->vpaths[i];
1168                         vxge_assert(vpath->is_open);
1169
1170                         if (dev->flags & IFF_PROMISC)
1171                                 status = vxge_hw_vpath_promisc_enable(
1172                                         vpath->handle);
1173                         else
1174                                 status = vxge_hw_vpath_promisc_disable(
1175                                         vpath->handle);
1176                         if (status != VXGE_HW_OK)
1177                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1178                                         ", status %d", dev->flags&IFF_PROMISC ?
1179                                         "enable" : "disable", status);
1180                 }
1181         }
1182
1183         memset(&mac_info, 0, sizeof(struct macInfo));
1184         /* Update individual M_CAST address list */
1185         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1186                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1187                 list_head = &vdev->vpaths[0].mac_addr_list;
1188                 if ((netdev_mc_count(dev) +
1189                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1190                                 vdev->vpaths[0].max_mac_addr_cnt)
1191                         goto _set_all_mcast;
1192
1193                 /* Delete previous MC's */
1194                 for (i = 0; i < mcast_cnt; i++) {
1195                         list_for_each_safe(entry, next, list_head) {
1196                                 mac_entry = (struct vxge_mac_addrs *)entry;
1197                                 /* Copy the mac address to delete */
1198                                 mac_address = (u8 *)&mac_entry->macaddr;
1199                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1200
1201                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1202                                         for (vpath_idx = 0; vpath_idx <
1203                                                 vdev->no_of_vpath;
1204                                                 vpath_idx++) {
1205                                                 mac_info.vpath_no = vpath_idx;
1206                                                 status = vxge_del_mac_addr(
1207                                                                 vdev,
1208                                                                 &mac_info);
1209                                         }
1210                                 }
1211                         }
1212                 }
1213
1214                 /* Add new ones */
1215                 netdev_for_each_mc_addr(ha, dev) {
1216                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1217                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1218                                         vpath_idx++) {
1219                                 mac_info.vpath_no = vpath_idx;
1220                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1221                                 status = vxge_add_mac_addr(vdev, &mac_info);
1222                                 if (status != VXGE_HW_OK) {
1223                                         vxge_debug_init(VXGE_ERR,
1224                                                 "%s:%d Setting individual"
1225                                                 "multicast address failed",
1226                                                 __func__, __LINE__);
1227                                         goto _set_all_mcast;
1228                                 }
1229                         }
1230                 }
1231
1232                 return;
1233 _set_all_mcast:
1234                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1235                 /* Delete previous MC's */
1236                 for (i = 0; i < mcast_cnt; i++) {
1237                         list_for_each_safe(entry, next, list_head) {
1238                                 mac_entry = (struct vxge_mac_addrs *)entry;
1239                                 /* Copy the mac address to delete */
1240                                 mac_address = (u8 *)&mac_entry->macaddr;
1241                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1242
1243                                 if (is_multicast_ether_addr(mac_info.macaddr))
1244                                         break;
1245                         }
1246
1247                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1248                                         vpath_idx++) {
1249                                 mac_info.vpath_no = vpath_idx;
1250                                 status = vxge_del_mac_addr(vdev, &mac_info);
1251                         }
1252                 }
1253
1254                 /* Enable all multicast */
1255                 for (i = 0; i < vdev->no_of_vpath; i++) {
1256                         vpath = &vdev->vpaths[i];
1257                         vxge_assert(vpath->is_open);
1258
1259                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1260                         if (status != VXGE_HW_OK) {
1261                                 vxge_debug_init(VXGE_ERR,
1262                                         "%s:%d Enabling all multicasts failed",
1263                                          __func__, __LINE__);
1264                         }
1265                         vdev->all_multi_flg = 1;
1266                 }
1267                 dev->flags |= IFF_ALLMULTI;
1268         }
1269
1270         vxge_debug_entryexit(VXGE_TRACE,
1271                 "%s:%d  Exiting...", __func__, __LINE__);
1272 }
1273
1274 /**
1275  * vxge_set_mac_addr
1276  * @dev: pointer to the device structure
1277  *
1278  * Update entry "0" (default MAC addr)
1279  */
1280 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1281 {
1282         struct sockaddr *addr = p;
1283         struct vxgedev *vdev;
1284         struct __vxge_hw_device *hldev;
1285         enum vxge_hw_status status = VXGE_HW_OK;
1286         struct macInfo mac_info_new, mac_info_old;
1287         int vpath_idx = 0;
1288
1289         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1290
1291         vdev = netdev_priv(dev);
1292         hldev = vdev->devh;
1293
1294         if (!is_valid_ether_addr(addr->sa_data))
1295                 return -EINVAL;
1296
1297         memset(&mac_info_new, 0, sizeof(struct macInfo));
1298         memset(&mac_info_old, 0, sizeof(struct macInfo));
1299
1300         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1301                 __func__, __LINE__);
1302
1303         /* Get the old address */
1304         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1305
1306         /* Copy the new address */
1307         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1308
1309         /* First delete the old mac address from all the vpaths
1310         as we can't specify the index while adding new mac address */
1311         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1312                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1313                 if (!vpath->is_open) {
1314                         /* This can happen when this interface is added/removed
1315                         to the bonding interface. Delete this station address
1316                         from the linked list */
1317                         vxge_mac_list_del(vpath, &mac_info_old);
1318
1319                         /* Add this new address to the linked list
1320                         for later restoring */
1321                         vxge_mac_list_add(vpath, &mac_info_new);
1322
1323                         continue;
1324                 }
1325                 /* Delete the station address */
1326                 mac_info_old.vpath_no = vpath_idx;
1327                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1328         }
1329
1330         if (unlikely(!is_vxge_card_up(vdev))) {
1331                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1332                 return VXGE_HW_OK;
1333         }
1334
1335         /* Set this mac address to all the vpaths */
1336         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1337                 mac_info_new.vpath_no = vpath_idx;
1338                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1339                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1340                 if (status != VXGE_HW_OK)
1341                         return -EINVAL;
1342         }
1343
1344         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1345
1346         return status;
1347 }
1348
1349 /*
1350  * vxge_vpath_intr_enable
1351  * @vdev: pointer to vdev
1352  * @vp_id: vpath for which to enable the interrupts
1353  *
1354  * Enables the interrupts for the vpath
1355 */
1356 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1357 {
1358         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1359         int msix_id = 0;
1360         int tim_msix_id[4] = {0, 1, 0, 0};
1361         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1362
1363         vxge_hw_vpath_intr_enable(vpath->handle);
1364
1365         if (vdev->config.intr_type == INTA)
1366                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1367         else {
1368                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1369                         alarm_msix_id);
1370
1371                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1372                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1373                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1374
1375                 /* enable the alarm vector */
1376                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1377                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1378                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1379         }
1380 }
1381
1382 /*
1383  * vxge_vpath_intr_disable
1384  * @vdev: pointer to vdev
1385  * @vp_id: vpath for which to disable the interrupts
1386  *
1387  * Disables the interrupts for the vpath
1388 */
1389 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1390 {
1391         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1392         struct __vxge_hw_device *hldev;
1393         int msix_id;
1394
1395         hldev = pci_get_drvdata(vdev->pdev);
1396
1397         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1398
1399         vxge_hw_vpath_intr_disable(vpath->handle);
1400
1401         if (vdev->config.intr_type == INTA)
1402                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1403         else {
1404                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1405                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1406                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1407
1408                 /* disable the alarm vector */
1409                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1410                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1411                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412         }
1413 }
1414
1415 /* list all mac addresses from DA table */
1416 static enum vxge_hw_status
1417 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1418 {
1419         enum vxge_hw_status status = VXGE_HW_OK;
1420         unsigned char macmask[ETH_ALEN];
1421         unsigned char macaddr[ETH_ALEN];
1422
1423         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1424                                 macaddr, macmask);
1425         if (status != VXGE_HW_OK) {
1426                 vxge_debug_init(VXGE_ERR,
1427                         "DA config list entry failed for vpath:%d",
1428                         vpath->device_id);
1429                 return status;
1430         }
1431
1432         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1433                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1434                                 macaddr, macmask);
1435                 if (status != VXGE_HW_OK)
1436                         break;
1437         }
1438
1439         return status;
1440 }
1441
1442 /* Store all mac addresses from the list to the DA table */
1443 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1444 {
1445         enum vxge_hw_status status = VXGE_HW_OK;
1446         struct macInfo mac_info;
1447         u8 *mac_address = NULL;
1448         struct list_head *entry, *next;
1449
1450         memset(&mac_info, 0, sizeof(struct macInfo));
1451
1452         if (vpath->is_open) {
1453                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1454                         mac_address =
1455                                 (u8 *)&
1456                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1457                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1458                         ((struct vxge_mac_addrs *)entry)->state =
1459                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1460                         /* does this mac address already exist in da table? */
1461                         status = vxge_search_mac_addr_in_da_table(vpath,
1462                                 &mac_info);
1463                         if (status != VXGE_HW_OK) {
1464                                 /* Add this mac address to the DA table */
1465                                 status = vxge_hw_vpath_mac_addr_add(
1466                                         vpath->handle, mac_info.macaddr,
1467                                         mac_info.macmask,
1468                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1469                                 if (status != VXGE_HW_OK) {
1470                                         vxge_debug_init(VXGE_ERR,
1471                                             "DA add entry failed for vpath:%d",
1472                                             vpath->device_id);
1473                                         ((struct vxge_mac_addrs *)entry)->state
1474                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1475                                 }
1476                         }
1477                 }
1478         }
1479
1480         return status;
1481 }
1482
1483 /* Store all vlan ids from the list to the vid table */
1484 static enum vxge_hw_status
1485 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1486 {
1487         enum vxge_hw_status status = VXGE_HW_OK;
1488         struct vxgedev *vdev = vpath->vdev;
1489         u16 vid;
1490
1491         if (!vpath->is_open)
1492                 return status;
1493
1494         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1495                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1496
1497         return status;
1498 }
1499
1500 /*
1501  * vxge_reset_vpath
1502  * @vdev: pointer to vdev
1503  * @vp_id: vpath to reset
1504  *
1505  * Resets the vpath
1506 */
1507 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1508 {
1509         enum vxge_hw_status status = VXGE_HW_OK;
1510         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1511         int ret = 0;
1512
1513         /* check if device is down already */
1514         if (unlikely(!is_vxge_card_up(vdev)))
1515                 return 0;
1516
1517         /* is device reset already scheduled */
1518         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1519                 return 0;
1520
1521         if (vpath->handle) {
1522                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1523                         if (is_vxge_card_up(vdev) &&
1524                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1525                                         != VXGE_HW_OK) {
1526                                 vxge_debug_init(VXGE_ERR,
1527                                         "vxge_hw_vpath_recover_from_reset"
1528                                         "failed for vpath:%d", vp_id);
1529                                 return status;
1530                         }
1531                 } else {
1532                         vxge_debug_init(VXGE_ERR,
1533                                 "vxge_hw_vpath_reset failed for"
1534                                 "vpath:%d", vp_id);
1535                                 return status;
1536                 }
1537         } else
1538                 return VXGE_HW_FAIL;
1539
1540         vxge_restore_vpath_mac_addr(vpath);
1541         vxge_restore_vpath_vid_table(vpath);
1542
1543         /* Enable all broadcast */
1544         vxge_hw_vpath_bcast_enable(vpath->handle);
1545
1546         /* Enable all multicast */
1547         if (vdev->all_multi_flg) {
1548                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1549                 if (status != VXGE_HW_OK)
1550                         vxge_debug_init(VXGE_ERR,
1551                                 "%s:%d Enabling multicast failed",
1552                                 __func__, __LINE__);
1553         }
1554
1555         /* Enable the interrupts */
1556         vxge_vpath_intr_enable(vdev, vp_id);
1557
1558         smp_wmb();
1559
1560         /* Enable the flow of traffic through the vpath */
1561         vxge_hw_vpath_enable(vpath->handle);
1562
1563         smp_wmb();
1564         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1565         vpath->ring.last_status = VXGE_HW_OK;
1566
1567         /* Vpath reset done */
1568         clear_bit(vp_id, &vdev->vp_reset);
1569
1570         /* Start the vpath queue */
1571         if (netif_tx_queue_stopped(vpath->fifo.txq))
1572                 netif_tx_wake_queue(vpath->fifo.txq);
1573
1574         return ret;
1575 }
1576
1577 /* Configure CI */
1578 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1579 {
1580         int i = 0;
1581
1582         /* Enable CI for RTI */
1583         if (vdev->config.intr_type == MSI_X) {
1584                 for (i = 0; i < vdev->no_of_vpath; i++) {
1585                         struct __vxge_hw_ring *hw_ring;
1586
1587                         hw_ring = vdev->vpaths[i].ring.handle;
1588                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1589                 }
1590         }
1591
1592         /* Enable CI for TTI */
1593         for (i = 0; i < vdev->no_of_vpath; i++) {
1594                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1595                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1596                 /*
1597                  * For Inta (with or without napi), Set CI ON for only one
1598                  * vpath. (Have only one free running timer).
1599                  */
1600                 if ((vdev->config.intr_type == INTA) && (i == 0))
1601                         break;
1602         }
1603
1604         return;
1605 }
1606
1607 static int do_vxge_reset(struct vxgedev *vdev, int event)
1608 {
1609         enum vxge_hw_status status;
1610         int ret = 0, vp_id, i;
1611
1612         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1613
1614         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1615                 /* check if device is down already */
1616                 if (unlikely(!is_vxge_card_up(vdev)))
1617                         return 0;
1618
1619                 /* is reset already scheduled */
1620                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1621                         return 0;
1622         }
1623
1624         if (event == VXGE_LL_FULL_RESET) {
1625                 netif_carrier_off(vdev->ndev);
1626
1627                 /* wait for all the vpath reset to complete */
1628                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1629                         while (test_bit(vp_id, &vdev->vp_reset))
1630                                 msleep(50);
1631                 }
1632
1633                 netif_carrier_on(vdev->ndev);
1634
1635                 /* if execution mode is set to debug, don't reset the adapter */
1636                 if (unlikely(vdev->exec_mode)) {
1637                         vxge_debug_init(VXGE_ERR,
1638                                 "%s: execution mode is debug, returning..",
1639                                 vdev->ndev->name);
1640                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1641                         netif_tx_stop_all_queues(vdev->ndev);
1642                         return 0;
1643                 }
1644         }
1645
1646         if (event == VXGE_LL_FULL_RESET) {
1647                 vxge_hw_device_wait_receive_idle(vdev->devh);
1648                 vxge_hw_device_intr_disable(vdev->devh);
1649
1650                 switch (vdev->cric_err_event) {
1651                 case VXGE_HW_EVENT_UNKNOWN:
1652                         netif_tx_stop_all_queues(vdev->ndev);
1653                         vxge_debug_init(VXGE_ERR,
1654                                 "fatal: %s: Disabling device due to"
1655                                 "unknown error",
1656                                 vdev->ndev->name);
1657                         ret = -EPERM;
1658                         goto out;
1659                 case VXGE_HW_EVENT_RESET_START:
1660                         break;
1661                 case VXGE_HW_EVENT_RESET_COMPLETE:
1662                 case VXGE_HW_EVENT_LINK_DOWN:
1663                 case VXGE_HW_EVENT_LINK_UP:
1664                 case VXGE_HW_EVENT_ALARM_CLEARED:
1665                 case VXGE_HW_EVENT_ECCERR:
1666                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1667                         ret = -EPERM;
1668                         goto out;
1669                 case VXGE_HW_EVENT_FIFO_ERR:
1670                 case VXGE_HW_EVENT_VPATH_ERR:
1671                         break;
1672                 case VXGE_HW_EVENT_CRITICAL_ERR:
1673                         netif_tx_stop_all_queues(vdev->ndev);
1674                         vxge_debug_init(VXGE_ERR,
1675                                 "fatal: %s: Disabling device due to"
1676                                 "serious error",
1677                                 vdev->ndev->name);
1678                         /* SOP or device reset required */
1679                         /* This event is not currently used */
1680                         ret = -EPERM;
1681                         goto out;
1682                 case VXGE_HW_EVENT_SERR:
1683                         netif_tx_stop_all_queues(vdev->ndev);
1684                         vxge_debug_init(VXGE_ERR,
1685                                 "fatal: %s: Disabling device due to"
1686                                 "serious error",
1687                                 vdev->ndev->name);
1688                         ret = -EPERM;
1689                         goto out;
1690                 case VXGE_HW_EVENT_SRPCIM_SERR:
1691                 case VXGE_HW_EVENT_MRPCIM_SERR:
1692                         ret = -EPERM;
1693                         goto out;
1694                 case VXGE_HW_EVENT_SLOT_FREEZE:
1695                         netif_tx_stop_all_queues(vdev->ndev);
1696                         vxge_debug_init(VXGE_ERR,
1697                                 "fatal: %s: Disabling device due to"
1698                                 "slot freeze",
1699                                 vdev->ndev->name);
1700                         ret = -EPERM;
1701                         goto out;
1702                 default:
1703                         break;
1704
1705                 }
1706         }
1707
1708         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1709                 netif_tx_stop_all_queues(vdev->ndev);
1710
1711         if (event == VXGE_LL_FULL_RESET) {
1712                 status = vxge_reset_all_vpaths(vdev);
1713                 if (status != VXGE_HW_OK) {
1714                         vxge_debug_init(VXGE_ERR,
1715                                 "fatal: %s: can not reset vpaths",
1716                                 vdev->ndev->name);
1717                         ret = -EPERM;
1718                         goto out;
1719                 }
1720         }
1721
1722         if (event == VXGE_LL_COMPL_RESET) {
1723                 for (i = 0; i < vdev->no_of_vpath; i++)
1724                         if (vdev->vpaths[i].handle) {
1725                                 if (vxge_hw_vpath_recover_from_reset(
1726                                         vdev->vpaths[i].handle)
1727                                                 != VXGE_HW_OK) {
1728                                         vxge_debug_init(VXGE_ERR,
1729                                                 "vxge_hw_vpath_recover_"
1730                                                 "from_reset failed for vpath: "
1731                                                 "%d", i);
1732                                         ret = -EPERM;
1733                                         goto out;
1734                                 }
1735                                 } else {
1736                                         vxge_debug_init(VXGE_ERR,
1737                                         "vxge_hw_vpath_reset failed for "
1738                                                 "vpath:%d", i);
1739                                         ret = -EPERM;
1740                                         goto out;
1741                                 }
1742         }
1743
1744         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1745                 /* Reprogram the DA table with populated mac addresses */
1746                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1747                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1748                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1749                 }
1750
1751                 /* enable vpath interrupts */
1752                 for (i = 0; i < vdev->no_of_vpath; i++)
1753                         vxge_vpath_intr_enable(vdev, i);
1754
1755                 vxge_hw_device_intr_enable(vdev->devh);
1756
1757                 smp_wmb();
1758
1759                 /* Indicate card up */
1760                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1761
1762                 /* Get the traffic to flow through the vpaths */
1763                 for (i = 0; i < vdev->no_of_vpath; i++) {
1764                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1765                         smp_wmb();
1766                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1767                 }
1768
1769                 netif_tx_wake_all_queues(vdev->ndev);
1770         }
1771
1772         /* configure CI */
1773         vxge_config_ci_for_tti_rti(vdev);
1774
1775 out:
1776         vxge_debug_entryexit(VXGE_TRACE,
1777                 "%s:%d  Exiting...", __func__, __LINE__);
1778
1779         /* Indicate reset done */
1780         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1781                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1782         return ret;
1783 }
1784
1785 /*
1786  * vxge_reset
1787  * @vdev: pointer to ll device
1788  *
1789  * driver may reset the chip on events of serr, eccerr, etc
1790  */
1791 static void vxge_reset(struct work_struct *work)
1792 {
1793         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1794
1795         if (!netif_running(vdev->ndev))
1796                 return;
1797
1798         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1799 }
1800
1801 /**
1802  * vxge_poll - Receive handler when Receive Polling is used.
1803  * @dev: pointer to the device structure.
1804  * @budget: Number of packets budgeted to be processed in this iteration.
1805  *
1806  * This function comes into picture only if Receive side is being handled
1807  * through polling (called NAPI in linux). It mostly does what the normal
1808  * Rx interrupt handler does in terms of descriptor and packet processing
1809  * but not in an interrupt context. Also it will process a specified number
1810  * of packets at most in one iteration. This value is passed down by the
1811  * kernel as the function argument 'budget'.
1812  */
1813 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1814 {
1815         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1816         int pkts_processed;
1817         int budget_org = budget;
1818
1819         ring->budget = budget;
1820         ring->pkts_processed = 0;
1821         vxge_hw_vpath_poll_rx(ring->handle);
1822         pkts_processed = ring->pkts_processed;
1823
1824         if (ring->pkts_processed < budget_org) {
1825                 napi_complete(napi);
1826
1827                 /* Re enable the Rx interrupts for the vpath */
1828                 vxge_hw_channel_msix_unmask(
1829                                 (struct __vxge_hw_channel *)ring->handle,
1830                                 ring->rx_vector_no);
1831                 mmiowb();
1832         }
1833
1834         /* We are copying and returning the local variable, in case if after
1835          * clearing the msix interrupt above, if the interrupt fires right
1836          * away which can preempt this NAPI thread */
1837         return pkts_processed;
1838 }
1839
1840 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1841 {
1842         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1843         int pkts_processed = 0;
1844         int i;
1845         int budget_org = budget;
1846         struct vxge_ring *ring;
1847
1848         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1849
1850         for (i = 0; i < vdev->no_of_vpath; i++) {
1851                 ring = &vdev->vpaths[i].ring;
1852                 ring->budget = budget;
1853                 ring->pkts_processed = 0;
1854                 vxge_hw_vpath_poll_rx(ring->handle);
1855                 pkts_processed += ring->pkts_processed;
1856                 budget -= ring->pkts_processed;
1857                 if (budget <= 0)
1858                         break;
1859         }
1860
1861         VXGE_COMPLETE_ALL_TX(vdev);
1862
1863         if (pkts_processed < budget_org) {
1864                 napi_complete(napi);
1865                 /* Re enable the Rx interrupts for the ring */
1866                 vxge_hw_device_unmask_all(hldev);
1867                 vxge_hw_device_flush_io(hldev);
1868         }
1869
1870         return pkts_processed;
1871 }
1872
1873 #ifdef CONFIG_NET_POLL_CONTROLLER
1874 /**
1875  * vxge_netpoll - netpoll event handler entry point
1876  * @dev : pointer to the device structure.
1877  * Description:
1878  *      This function will be called by upper layer to check for events on the
1879  * interface in situations where interrupts are disabled. It is used for
1880  * specific in-kernel networking tasks, such as remote consoles and kernel
1881  * debugging over the network (example netdump in RedHat).
1882  */
1883 static void vxge_netpoll(struct net_device *dev)
1884 {
1885         struct vxgedev *vdev = netdev_priv(dev);
1886         struct pci_dev *pdev = vdev->pdev;
1887         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1888         const int irq = pdev->irq;
1889
1890         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1891
1892         if (pci_channel_offline(pdev))
1893                 return;
1894
1895         disable_irq(irq);
1896         vxge_hw_device_clear_tx_rx(hldev);
1897
1898         vxge_hw_device_clear_tx_rx(hldev);
1899         VXGE_COMPLETE_ALL_RX(vdev);
1900         VXGE_COMPLETE_ALL_TX(vdev);
1901
1902         enable_irq(irq);
1903
1904         vxge_debug_entryexit(VXGE_TRACE,
1905                 "%s:%d  Exiting...", __func__, __LINE__);
1906 }
1907 #endif
1908
1909 /* RTH configuration */
1910 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1911 {
1912         enum vxge_hw_status status = VXGE_HW_OK;
1913         struct vxge_hw_rth_hash_types hash_types;
1914         u8 itable[256] = {0}; /* indirection table */
1915         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1916         int index;
1917
1918         /*
1919          * Filling
1920          *      - itable with bucket numbers
1921          *      - mtable with bucket-to-vpath mapping
1922          */
1923         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1924                 itable[index] = index;
1925                 mtable[index] = index % vdev->no_of_vpath;
1926         }
1927
1928         /* set indirection table, bucket-to-vpath mapping */
1929         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1930                                                 vdev->no_of_vpath,
1931                                                 mtable, itable,
1932                                                 vdev->config.rth_bkt_sz);
1933         if (status != VXGE_HW_OK) {
1934                 vxge_debug_init(VXGE_ERR,
1935                         "RTH indirection table configuration failed "
1936                         "for vpath:%d", vdev->vpaths[0].device_id);
1937                 return status;
1938         }
1939
1940         /* Fill RTH hash types */
1941         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1942         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1943         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1944         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1945         hash_types.hash_type_tcpipv6ex_en =
1946                                         vdev->config.rth_hash_type_tcpipv6ex;
1947         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1948
1949         /*
1950          * Because the itable_set() method uses the active_table field
1951          * for the target virtual path the RTH config should be updated
1952          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1953          * when steering frames.
1954          */
1955          for (index = 0; index < vdev->no_of_vpath; index++) {
1956                 status = vxge_hw_vpath_rts_rth_set(
1957                                 vdev->vpaths[index].handle,
1958                                 vdev->config.rth_algorithm,
1959                                 &hash_types,
1960                                 vdev->config.rth_bkt_sz);
1961                  if (status != VXGE_HW_OK) {
1962                         vxge_debug_init(VXGE_ERR,
1963                                 "RTH configuration failed for vpath:%d",
1964                                 vdev->vpaths[index].device_id);
1965                         return status;
1966                  }
1967          }
1968
1969         return status;
1970 }
1971
1972 /* reset vpaths */
1973 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1974 {
1975         enum vxge_hw_status status = VXGE_HW_OK;
1976         struct vxge_vpath *vpath;
1977         int i;
1978
1979         for (i = 0; i < vdev->no_of_vpath; i++) {
1980                 vpath = &vdev->vpaths[i];
1981                 if (vpath->handle) {
1982                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1983                                 if (is_vxge_card_up(vdev) &&
1984                                         vxge_hw_vpath_recover_from_reset(
1985                                                 vpath->handle) != VXGE_HW_OK) {
1986                                         vxge_debug_init(VXGE_ERR,
1987                                                 "vxge_hw_vpath_recover_"
1988                                                 "from_reset failed for vpath: "
1989                                                 "%d", i);
1990                                         return status;
1991                                 }
1992                         } else {
1993                                 vxge_debug_init(VXGE_ERR,
1994                                         "vxge_hw_vpath_reset failed for "
1995                                         "vpath:%d", i);
1996                                         return status;
1997                         }
1998                 }
1999         }
2000
2001         return status;
2002 }
2003
2004 /* close vpaths */
2005 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2006 {
2007         struct vxge_vpath *vpath;
2008         int i;
2009
2010         for (i = index; i < vdev->no_of_vpath; i++) {
2011                 vpath = &vdev->vpaths[i];
2012
2013                 if (vpath->handle && vpath->is_open) {
2014                         vxge_hw_vpath_close(vpath->handle);
2015                         vdev->stats.vpaths_open--;
2016                 }
2017                 vpath->is_open = 0;
2018                 vpath->handle = NULL;
2019         }
2020 }
2021
2022 /* open vpaths */
2023 static int vxge_open_vpaths(struct vxgedev *vdev)
2024 {
2025         struct vxge_hw_vpath_attr attr;
2026         enum vxge_hw_status status;
2027         struct vxge_vpath *vpath;
2028         u32 vp_id = 0;
2029         int i;
2030
2031         for (i = 0; i < vdev->no_of_vpath; i++) {
2032                 vpath = &vdev->vpaths[i];
2033                 vxge_assert(vpath->is_configured);
2034
2035                 if (!vdev->titan1) {
2036                         struct vxge_hw_vp_config *vcfg;
2037                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2038
2039                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2040                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2041                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2042                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2043                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2044                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2045                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2046                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2047                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2048                 }
2049
2050                 attr.vp_id = vpath->device_id;
2051                 attr.fifo_attr.callback = vxge_xmit_compl;
2052                 attr.fifo_attr.txdl_term = vxge_tx_term;
2053                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2054                 attr.fifo_attr.userdata = &vpath->fifo;
2055
2056                 attr.ring_attr.callback = vxge_rx_1b_compl;
2057                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2058                 attr.ring_attr.rxd_term = vxge_rx_term;
2059                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2060                 attr.ring_attr.userdata = &vpath->ring;
2061
2062                 vpath->ring.ndev = vdev->ndev;
2063                 vpath->ring.pdev = vdev->pdev;
2064
2065                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2066                 if (status == VXGE_HW_OK) {
2067                         vpath->fifo.handle =
2068                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2069                         vpath->ring.handle =
2070                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2071                         vpath->fifo.tx_steering_type =
2072                                 vdev->config.tx_steering_type;
2073                         vpath->fifo.ndev = vdev->ndev;
2074                         vpath->fifo.pdev = vdev->pdev;
2075
2076                         u64_stats_init(&vpath->fifo.stats.syncp);
2077                         u64_stats_init(&vpath->ring.stats.syncp);
2078
2079                         if (vdev->config.tx_steering_type)
2080                                 vpath->fifo.txq =
2081                                         netdev_get_tx_queue(vdev->ndev, i);
2082                         else
2083                                 vpath->fifo.txq =
2084                                         netdev_get_tx_queue(vdev->ndev, 0);
2085                         vpath->fifo.indicate_max_pkts =
2086                                 vdev->config.fifo_indicate_max_pkts;
2087                         vpath->fifo.tx_vector_no = 0;
2088                         vpath->ring.rx_vector_no = 0;
2089                         vpath->ring.rx_hwts = vdev->rx_hwts;
2090                         vpath->is_open = 1;
2091                         vdev->vp_handles[i] = vpath->handle;
2092                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2093                         vdev->stats.vpaths_open++;
2094                 } else {
2095                         vdev->stats.vpath_open_fail++;
2096                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2097                                         "open with status: %d",
2098                                         vdev->ndev->name, vpath->device_id,
2099                                         status);
2100                         vxge_close_vpaths(vdev, 0);
2101                         return -EPERM;
2102                 }
2103
2104                 vp_id = vpath->handle->vpath->vp_id;
2105                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2106         }
2107
2108         return VXGE_HW_OK;
2109 }
2110
2111 /**
2112  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2113  *  if the interrupts are not within a range
2114  *  @fifo: pointer to transmit fifo structure
2115  *  Description: The function changes boundary timer and restriction timer
2116  *  value depends on the traffic
2117  *  Return Value: None
2118  */
2119 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2120 {
2121         fifo->interrupt_count++;
2122         if (jiffies > fifo->jiffies + HZ / 100) {
2123                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2124
2125                 fifo->jiffies = jiffies;
2126                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2127                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2128                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2129                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2130                 } else if (hw_fifo->rtimer != 0) {
2131                         hw_fifo->rtimer = 0;
2132                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2133                 }
2134                 fifo->interrupt_count = 0;
2135         }
2136 }
2137
2138 /**
2139  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2140  *  if the interrupts are not within a range
2141  *  @ring: pointer to receive ring structure
2142  *  Description: The function increases of decreases the packet counts within
2143  *  the ranges of traffic utilization, if the interrupts due to this ring are
2144  *  not within a fixed range.
2145  *  Return Value: Nothing
2146  */
2147 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2148 {
2149         ring->interrupt_count++;
2150         if (jiffies > ring->jiffies + HZ / 100) {
2151                 struct __vxge_hw_ring *hw_ring = ring->handle;
2152
2153                 ring->jiffies = jiffies;
2154                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2155                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2156                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2157                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2158                 } else if (hw_ring->rtimer != 0) {
2159                         hw_ring->rtimer = 0;
2160                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2161                 }
2162                 ring->interrupt_count = 0;
2163         }
2164 }
2165
2166 /*
2167  *  vxge_isr_napi
2168  *  @irq: the irq of the device.
2169  *  @dev_id: a void pointer to the hldev structure of the Titan device
2170  *  @ptregs: pointer to the registers pushed on the stack.
2171  *
2172  *  This function is the ISR handler of the device when napi is enabled. It
2173  *  identifies the reason for the interrupt and calls the relevant service
2174  *  routines.
2175  */
2176 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2177 {
2178         struct net_device *dev;
2179         struct __vxge_hw_device *hldev;
2180         u64 reason;
2181         enum vxge_hw_status status;
2182         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2183
2184         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2185
2186         dev = vdev->ndev;
2187         hldev = pci_get_drvdata(vdev->pdev);
2188
2189         if (pci_channel_offline(vdev->pdev))
2190                 return IRQ_NONE;
2191
2192         if (unlikely(!is_vxge_card_up(vdev)))
2193                 return IRQ_HANDLED;
2194
2195         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2196         if (status == VXGE_HW_OK) {
2197                 vxge_hw_device_mask_all(hldev);
2198
2199                 if (reason &
2200                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2201                         vdev->vpaths_deployed >>
2202                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2203
2204                         vxge_hw_device_clear_tx_rx(hldev);
2205                         napi_schedule(&vdev->napi);
2206                         vxge_debug_intr(VXGE_TRACE,
2207                                 "%s:%d  Exiting...", __func__, __LINE__);
2208                         return IRQ_HANDLED;
2209                 } else
2210                         vxge_hw_device_unmask_all(hldev);
2211         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2212                 (status == VXGE_HW_ERR_CRITICAL) ||
2213                 (status == VXGE_HW_ERR_FIFO))) {
2214                 vxge_hw_device_mask_all(hldev);
2215                 vxge_hw_device_flush_io(hldev);
2216                 return IRQ_HANDLED;
2217         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2218                 return IRQ_HANDLED;
2219
2220         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2221         return IRQ_NONE;
2222 }
2223
2224 #ifdef CONFIG_PCI_MSI
2225
2226 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2227 {
2228         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2229
2230         adaptive_coalesce_tx_interrupts(fifo);
2231
2232         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2233                                   fifo->tx_vector_no);
2234
2235         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2236                                    fifo->tx_vector_no);
2237
2238         VXGE_COMPLETE_VPATH_TX(fifo);
2239
2240         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2241                                     fifo->tx_vector_no);
2242
2243         mmiowb();
2244
2245         return IRQ_HANDLED;
2246 }
2247
2248 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2249 {
2250         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2251
2252         adaptive_coalesce_rx_interrupts(ring);
2253
2254         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2255                                   ring->rx_vector_no);
2256
2257         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2258                                    ring->rx_vector_no);
2259
2260         napi_schedule(&ring->napi);
2261         return IRQ_HANDLED;
2262 }
2263
2264 static irqreturn_t
2265 vxge_alarm_msix_handle(int irq, void *dev_id)
2266 {
2267         int i;
2268         enum vxge_hw_status status;
2269         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2270         struct vxgedev *vdev = vpath->vdev;
2271         int msix_id = (vpath->handle->vpath->vp_id *
2272                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2273
2274         for (i = 0; i < vdev->no_of_vpath; i++) {
2275                 /* Reduce the chance of losing alarm interrupts by masking
2276                  * the vector. A pending bit will be set if an alarm is
2277                  * generated and on unmask the interrupt will be fired.
2278                  */
2279                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2280                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2281                 mmiowb();
2282
2283                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2284                         vdev->exec_mode);
2285                 if (status == VXGE_HW_OK) {
2286                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2287                                                   msix_id);
2288                         mmiowb();
2289                         continue;
2290                 }
2291                 vxge_debug_intr(VXGE_ERR,
2292                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2293                         VXGE_DRIVER_NAME, status);
2294         }
2295         return IRQ_HANDLED;
2296 }
2297
2298 static int vxge_alloc_msix(struct vxgedev *vdev)
2299 {
2300         int j, i, ret = 0;
2301         int msix_intr_vect = 0, temp;
2302         vdev->intr_cnt = 0;
2303
2304 start:
2305         /* Tx/Rx MSIX Vectors count */
2306         vdev->intr_cnt = vdev->no_of_vpath * 2;
2307
2308         /* Alarm MSIX Vectors count */
2309         vdev->intr_cnt++;
2310
2311         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2312                                 GFP_KERNEL);
2313         if (!vdev->entries) {
2314                 vxge_debug_init(VXGE_ERR,
2315                         "%s: memory allocation failed",
2316                         VXGE_DRIVER_NAME);
2317                 ret = -ENOMEM;
2318                 goto alloc_entries_failed;
2319         }
2320
2321         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2322                                      sizeof(struct vxge_msix_entry),
2323                                      GFP_KERNEL);
2324         if (!vdev->vxge_entries) {
2325                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2326                         VXGE_DRIVER_NAME);
2327                 ret = -ENOMEM;
2328                 goto alloc_vxge_entries_failed;
2329         }
2330
2331         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2332
2333                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2334
2335                 /* Initialize the fifo vector */
2336                 vdev->entries[j].entry = msix_intr_vect;
2337                 vdev->vxge_entries[j].entry = msix_intr_vect;
2338                 vdev->vxge_entries[j].in_use = 0;
2339                 j++;
2340
2341                 /* Initialize the ring vector */
2342                 vdev->entries[j].entry = msix_intr_vect + 1;
2343                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2344                 vdev->vxge_entries[j].in_use = 0;
2345                 j++;
2346         }
2347
2348         /* Initialize the alarm vector */
2349         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2350         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2351         vdev->vxge_entries[j].in_use = 0;
2352
2353         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2354         if (ret > 0) {
2355                 vxge_debug_init(VXGE_ERR,
2356                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2357                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2358                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2359                         ret = -ENODEV;
2360                         goto enable_msix_failed;
2361                 }
2362
2363                 kfree(vdev->entries);
2364                 kfree(vdev->vxge_entries);
2365                 vdev->entries = NULL;
2366                 vdev->vxge_entries = NULL;
2367                 /* Try with less no of vector by reducing no of vpaths count */
2368                 temp = (ret - 1)/2;
2369                 vxge_close_vpaths(vdev, temp);
2370                 vdev->no_of_vpath = temp;
2371                 goto start;
2372         } else if (ret < 0) {
2373                 ret = -ENODEV;
2374                 goto enable_msix_failed;
2375         }
2376         return 0;
2377
2378 enable_msix_failed:
2379         kfree(vdev->vxge_entries);
2380 alloc_vxge_entries_failed:
2381         kfree(vdev->entries);
2382 alloc_entries_failed:
2383         return ret;
2384 }
2385
2386 static int vxge_enable_msix(struct vxgedev *vdev)
2387 {
2388
2389         int i, ret = 0;
2390         /* 0 - Tx, 1 - Rx  */
2391         int tim_msix_id[4] = {0, 1, 0, 0};
2392
2393         vdev->intr_cnt = 0;
2394
2395         /* allocate msix vectors */
2396         ret = vxge_alloc_msix(vdev);
2397         if (!ret) {
2398                 for (i = 0; i < vdev->no_of_vpath; i++) {
2399                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2400
2401                         /* If fifo or ring are not enabled, the MSIX vector for
2402                          * it should be set to 0.
2403                          */
2404                         vpath->ring.rx_vector_no = (vpath->device_id *
2405                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2406
2407                         vpath->fifo.tx_vector_no = (vpath->device_id *
2408                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2409
2410                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2411                                                VXGE_ALARM_MSIX_ID);
2412                 }
2413         }
2414
2415         return ret;
2416 }
2417
2418 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2419 {
2420         int intr_cnt;
2421
2422         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2423                 intr_cnt++) {
2424                 if (vdev->vxge_entries[intr_cnt].in_use) {
2425                         synchronize_irq(vdev->entries[intr_cnt].vector);
2426                         free_irq(vdev->entries[intr_cnt].vector,
2427                                 vdev->vxge_entries[intr_cnt].arg);
2428                         vdev->vxge_entries[intr_cnt].in_use = 0;
2429                 }
2430         }
2431
2432         kfree(vdev->entries);
2433         kfree(vdev->vxge_entries);
2434         vdev->entries = NULL;
2435         vdev->vxge_entries = NULL;
2436
2437         if (vdev->config.intr_type == MSI_X)
2438                 pci_disable_msix(vdev->pdev);
2439 }
2440 #endif
2441
2442 static void vxge_rem_isr(struct vxgedev *vdev)
2443 {
2444         struct __vxge_hw_device *hldev;
2445         hldev = pci_get_drvdata(vdev->pdev);
2446
2447 #ifdef CONFIG_PCI_MSI
2448         if (vdev->config.intr_type == MSI_X) {
2449                 vxge_rem_msix_isr(vdev);
2450         } else
2451 #endif
2452         if (vdev->config.intr_type == INTA) {
2453                         synchronize_irq(vdev->pdev->irq);
2454                         free_irq(vdev->pdev->irq, vdev);
2455         }
2456 }
2457
2458 static int vxge_add_isr(struct vxgedev *vdev)
2459 {
2460         int ret = 0;
2461 #ifdef CONFIG_PCI_MSI
2462         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2463         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2464
2465         if (vdev->config.intr_type == MSI_X)
2466                 ret = vxge_enable_msix(vdev);
2467
2468         if (ret) {
2469                 vxge_debug_init(VXGE_ERR,
2470                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2471                 vxge_debug_init(VXGE_ERR,
2472                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2473                 vdev->config.intr_type = INTA;
2474         }
2475
2476         if (vdev->config.intr_type == MSI_X) {
2477                 for (intr_idx = 0;
2478                      intr_idx < (vdev->no_of_vpath *
2479                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2480
2481                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2482                         irq_req = 0;
2483
2484                         switch (msix_idx) {
2485                         case 0:
2486                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2487                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2488                                         vdev->ndev->name,
2489                                         vdev->entries[intr_cnt].entry,
2490                                         pci_fun, vp_idx);
2491                                 ret = request_irq(
2492                                     vdev->entries[intr_cnt].vector,
2493                                         vxge_tx_msix_handle, 0,
2494                                         vdev->desc[intr_cnt],
2495                                         &vdev->vpaths[vp_idx].fifo);
2496                                         vdev->vxge_entries[intr_cnt].arg =
2497                                                 &vdev->vpaths[vp_idx].fifo;
2498                                 irq_req = 1;
2499                                 break;
2500                         case 1:
2501                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2502                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2503                                         vdev->ndev->name,
2504                                         vdev->entries[intr_cnt].entry,
2505                                         pci_fun, vp_idx);
2506                                 ret = request_irq(
2507                                     vdev->entries[intr_cnt].vector,
2508                                         vxge_rx_msix_napi_handle,
2509                                         0,
2510                                         vdev->desc[intr_cnt],
2511                                         &vdev->vpaths[vp_idx].ring);
2512                                         vdev->vxge_entries[intr_cnt].arg =
2513                                                 &vdev->vpaths[vp_idx].ring;
2514                                 irq_req = 1;
2515                                 break;
2516                         }
2517
2518                         if (ret) {
2519                                 vxge_debug_init(VXGE_ERR,
2520                                         "%s: MSIX - %d  Registration failed",
2521                                         vdev->ndev->name, intr_cnt);
2522                                 vxge_rem_msix_isr(vdev);
2523                                 vdev->config.intr_type = INTA;
2524                                 vxge_debug_init(VXGE_ERR,
2525                                         "%s: Defaulting to INTA"
2526                                         , vdev->ndev->name);
2527                                         goto INTA_MODE;
2528                         }
2529
2530                         if (irq_req) {
2531                                 /* We requested for this msix interrupt */
2532                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2533                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2534                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2535                                 vxge_hw_vpath_msix_unmask(
2536                                         vdev->vpaths[vp_idx].handle,
2537                                         msix_idx);
2538                                 intr_cnt++;
2539                         }
2540
2541                         /* Point to next vpath handler */
2542                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2543                             (vp_idx < (vdev->no_of_vpath - 1)))
2544                                 vp_idx++;
2545                 }
2546
2547                 intr_cnt = vdev->no_of_vpath * 2;
2548                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2549                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2550                         vdev->ndev->name,
2551                         vdev->entries[intr_cnt].entry,
2552                         pci_fun);
2553                 /* For Alarm interrupts */
2554                 ret = request_irq(vdev->entries[intr_cnt].vector,
2555                                         vxge_alarm_msix_handle, 0,
2556                                         vdev->desc[intr_cnt],
2557                                         &vdev->vpaths[0]);
2558                 if (ret) {
2559                         vxge_debug_init(VXGE_ERR,
2560                                 "%s: MSIX - %d Registration failed",
2561                                 vdev->ndev->name, intr_cnt);
2562                         vxge_rem_msix_isr(vdev);
2563                         vdev->config.intr_type = INTA;
2564                         vxge_debug_init(VXGE_ERR,
2565                                 "%s: Defaulting to INTA",
2566                                 vdev->ndev->name);
2567                                 goto INTA_MODE;
2568                 }
2569
2570                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2571                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2572                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2573                                         msix_idx);
2574                 vdev->vxge_entries[intr_cnt].in_use = 1;
2575                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2576         }
2577 INTA_MODE:
2578 #endif
2579
2580         if (vdev->config.intr_type == INTA) {
2581                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2582                         "%s:vxge:INTA", vdev->ndev->name);
2583                 vxge_hw_device_set_intr_type(vdev->devh,
2584                         VXGE_HW_INTR_MODE_IRQLINE);
2585
2586                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2587
2588                 ret = request_irq((int) vdev->pdev->irq,
2589                         vxge_isr_napi,
2590                         IRQF_SHARED, vdev->desc[0], vdev);
2591                 if (ret) {
2592                         vxge_debug_init(VXGE_ERR,
2593                                 "%s %s-%d: ISR registration failed",
2594                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2595                         return -ENODEV;
2596                 }
2597                 vxge_debug_init(VXGE_TRACE,
2598                         "new %s-%d line allocated",
2599                         "IRQ", vdev->pdev->irq);
2600         }
2601
2602         return VXGE_HW_OK;
2603 }
2604
2605 static void vxge_poll_vp_reset(unsigned long data)
2606 {
2607         struct vxgedev *vdev = (struct vxgedev *)data;
2608         int i, j = 0;
2609
2610         for (i = 0; i < vdev->no_of_vpath; i++) {
2611                 if (test_bit(i, &vdev->vp_reset)) {
2612                         vxge_reset_vpath(vdev, i);
2613                         j++;
2614                 }
2615         }
2616         if (j && (vdev->config.intr_type != MSI_X)) {
2617                 vxge_hw_device_unmask_all(vdev->devh);
2618                 vxge_hw_device_flush_io(vdev->devh);
2619         }
2620
2621         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2622 }
2623
2624 static void vxge_poll_vp_lockup(unsigned long data)
2625 {
2626         struct vxgedev *vdev = (struct vxgedev *)data;
2627         enum vxge_hw_status status = VXGE_HW_OK;
2628         struct vxge_vpath *vpath;
2629         struct vxge_ring *ring;
2630         int i;
2631         unsigned long rx_frms;
2632
2633         for (i = 0; i < vdev->no_of_vpath; i++) {
2634                 ring = &vdev->vpaths[i].ring;
2635
2636                 /* Truncated to machine word size number of frames */
2637                 rx_frms = ACCESS_ONCE(ring->stats.rx_frms);
2638
2639                 /* Did this vpath received any packets */
2640                 if (ring->stats.prev_rx_frms == rx_frms) {
2641                         status = vxge_hw_vpath_check_leak(ring->handle);
2642
2643                         /* Did it received any packets last time */
2644                         if ((VXGE_HW_FAIL == status) &&
2645                                 (VXGE_HW_FAIL == ring->last_status)) {
2646
2647                                 /* schedule vpath reset */
2648                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2649                                         vpath = &vdev->vpaths[i];
2650
2651                                         /* disable interrupts for this vpath */
2652                                         vxge_vpath_intr_disable(vdev, i);
2653
2654                                         /* stop the queue for this vpath */
2655                                         netif_tx_stop_queue(vpath->fifo.txq);
2656                                         continue;
2657                                 }
2658                         }
2659                 }
2660                 ring->stats.prev_rx_frms = rx_frms;
2661                 ring->last_status = status;
2662         }
2663
2664         /* Check every 1 milli second */
2665         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2666 }
2667
2668 static netdev_features_t vxge_fix_features(struct net_device *dev,
2669         netdev_features_t features)
2670 {
2671         netdev_features_t changed = dev->features ^ features;
2672
2673         /* Enabling RTH requires some of the logic in vxge_device_register and a
2674          * vpath reset.  Due to these restrictions, only allow modification
2675          * while the interface is down.
2676          */
2677         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2678                 features ^= NETIF_F_RXHASH;
2679
2680         return features;
2681 }
2682
2683 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2684 {
2685         struct vxgedev *vdev = netdev_priv(dev);
2686         netdev_features_t changed = dev->features ^ features;
2687
2688         if (!(changed & NETIF_F_RXHASH))
2689                 return 0;
2690
2691         /* !netif_running() ensured by vxge_fix_features() */
2692
2693         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2694         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2695                 dev->features = features ^ NETIF_F_RXHASH;
2696                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2697                 return -EIO;
2698         }
2699
2700         return 0;
2701 }
2702
2703 /**
2704  * vxge_open
2705  * @dev: pointer to the device structure.
2706  *
2707  * This function is the open entry point of the driver. It mainly calls a
2708  * function to allocate Rx buffers and inserts them into the buffer
2709  * descriptors and then enables the Rx part of the NIC.
2710  * Return value: '0' on success and an appropriate (-)ve integer as
2711  * defined in errno.h file on failure.
2712  */
2713 static int vxge_open(struct net_device *dev)
2714 {
2715         enum vxge_hw_status status;
2716         struct vxgedev *vdev;
2717         struct __vxge_hw_device *hldev;
2718         struct vxge_vpath *vpath;
2719         int ret = 0;
2720         int i;
2721         u64 val64, function_mode;
2722
2723         vxge_debug_entryexit(VXGE_TRACE,
2724                 "%s: %s:%d", dev->name, __func__, __LINE__);
2725
2726         vdev = netdev_priv(dev);
2727         hldev = pci_get_drvdata(vdev->pdev);
2728         function_mode = vdev->config.device_hw_info.function_mode;
2729
2730         /* make sure you have link off by default every time Nic is
2731          * initialized */
2732         netif_carrier_off(dev);
2733
2734         /* Open VPATHs */
2735         status = vxge_open_vpaths(vdev);
2736         if (status != VXGE_HW_OK) {
2737                 vxge_debug_init(VXGE_ERR,
2738                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2739                 ret = -EPERM;
2740                 goto out0;
2741         }
2742
2743         vdev->mtu = dev->mtu;
2744
2745         status = vxge_add_isr(vdev);
2746         if (status != VXGE_HW_OK) {
2747                 vxge_debug_init(VXGE_ERR,
2748                         "%s: fatal: ISR add failed", dev->name);
2749                 ret = -EPERM;
2750                 goto out1;
2751         }
2752
2753         if (vdev->config.intr_type != MSI_X) {
2754                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2755                         vdev->config.napi_weight);
2756                 napi_enable(&vdev->napi);
2757                 for (i = 0; i < vdev->no_of_vpath; i++) {
2758                         vpath = &vdev->vpaths[i];
2759                         vpath->ring.napi_p = &vdev->napi;
2760                 }
2761         } else {
2762                 for (i = 0; i < vdev->no_of_vpath; i++) {
2763                         vpath = &vdev->vpaths[i];
2764                         netif_napi_add(dev, &vpath->ring.napi,
2765                             vxge_poll_msix, vdev->config.napi_weight);
2766                         napi_enable(&vpath->ring.napi);
2767                         vpath->ring.napi_p = &vpath->ring.napi;
2768                 }
2769         }
2770
2771         /* configure RTH */
2772         if (vdev->config.rth_steering) {
2773                 status = vxge_rth_configure(vdev);
2774                 if (status != VXGE_HW_OK) {
2775                         vxge_debug_init(VXGE_ERR,
2776                                 "%s: fatal: RTH configuration failed",
2777                                 dev->name);
2778                         ret = -EPERM;
2779                         goto out2;
2780                 }
2781         }
2782         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2783                hldev->config.rth_en ? "enabled" : "disabled");
2784
2785         for (i = 0; i < vdev->no_of_vpath; i++) {
2786                 vpath = &vdev->vpaths[i];
2787
2788                 /* set initial mtu before enabling the device */
2789                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2790                 if (status != VXGE_HW_OK) {
2791                         vxge_debug_init(VXGE_ERR,
2792                                 "%s: fatal: can not set new MTU", dev->name);
2793                         ret = -EPERM;
2794                         goto out2;
2795                 }
2796         }
2797
2798         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2799         vxge_debug_init(vdev->level_trace,
2800                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2801         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2802
2803         /* Restore the DA, VID table and also multicast and promiscuous mode
2804          * states
2805          */
2806         if (vdev->all_multi_flg) {
2807                 for (i = 0; i < vdev->no_of_vpath; i++) {
2808                         vpath = &vdev->vpaths[i];
2809                         vxge_restore_vpath_mac_addr(vpath);
2810                         vxge_restore_vpath_vid_table(vpath);
2811
2812                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2813                         if (status != VXGE_HW_OK)
2814                                 vxge_debug_init(VXGE_ERR,
2815                                         "%s:%d Enabling multicast failed",
2816                                         __func__, __LINE__);
2817                 }
2818         }
2819
2820         /* Enable vpath to sniff all unicast/multicast traffic that not
2821          * addressed to them. We allow promiscuous mode for PF only
2822          */
2823
2824         val64 = 0;
2825         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2826                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2827
2828         vxge_hw_mgmt_reg_write(vdev->devh,
2829                 vxge_hw_mgmt_reg_type_mrpcim,
2830                 0,
2831                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2832                         rxmac_authorize_all_addr),
2833                 val64);
2834
2835         vxge_hw_mgmt_reg_write(vdev->devh,
2836                 vxge_hw_mgmt_reg_type_mrpcim,
2837                 0,
2838                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2839                         rxmac_authorize_all_vid),
2840                 val64);
2841
2842         vxge_set_multicast(dev);
2843
2844         /* Enabling Bcast and mcast for all vpath */
2845         for (i = 0; i < vdev->no_of_vpath; i++) {
2846                 vpath = &vdev->vpaths[i];
2847                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2848                 if (status != VXGE_HW_OK)
2849                         vxge_debug_init(VXGE_ERR,
2850                                 "%s : Can not enable bcast for vpath "
2851                                 "id %d", dev->name, i);
2852                 if (vdev->config.addr_learn_en) {
2853                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2854                         if (status != VXGE_HW_OK)
2855                                 vxge_debug_init(VXGE_ERR,
2856                                         "%s : Can not enable mcast for vpath "
2857                                         "id %d", dev->name, i);
2858                 }
2859         }
2860
2861         vxge_hw_device_setpause_data(vdev->devh, 0,
2862                 vdev->config.tx_pause_enable,
2863                 vdev->config.rx_pause_enable);
2864
2865         if (vdev->vp_reset_timer.function == NULL)
2866                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset, vdev,
2867                               HZ / 2);
2868
2869         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2870         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2871                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2872                               HZ / 2);
2873
2874         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2875
2876         smp_wmb();
2877
2878         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2879                 netif_carrier_on(vdev->ndev);
2880                 netdev_notice(vdev->ndev, "Link Up\n");
2881                 vdev->stats.link_up++;
2882         }
2883
2884         vxge_hw_device_intr_enable(vdev->devh);
2885
2886         smp_wmb();
2887
2888         for (i = 0; i < vdev->no_of_vpath; i++) {
2889                 vpath = &vdev->vpaths[i];
2890
2891                 vxge_hw_vpath_enable(vpath->handle);
2892                 smp_wmb();
2893                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2894         }
2895
2896         netif_tx_start_all_queues(vdev->ndev);
2897
2898         /* configure CI */
2899         vxge_config_ci_for_tti_rti(vdev);
2900
2901         goto out0;
2902
2903 out2:
2904         vxge_rem_isr(vdev);
2905
2906         /* Disable napi */
2907         if (vdev->config.intr_type != MSI_X)
2908                 napi_disable(&vdev->napi);
2909         else {
2910                 for (i = 0; i < vdev->no_of_vpath; i++)
2911                         napi_disable(&vdev->vpaths[i].ring.napi);
2912         }
2913
2914 out1:
2915         vxge_close_vpaths(vdev, 0);
2916 out0:
2917         vxge_debug_entryexit(VXGE_TRACE,
2918                                 "%s: %s:%d  Exiting...",
2919                                 dev->name, __func__, __LINE__);
2920         return ret;
2921 }
2922
2923 /* Loop through the mac address list and delete all the entries */
2924 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2925 {
2926
2927         struct list_head *entry, *next;
2928         if (list_empty(&vpath->mac_addr_list))
2929                 return;
2930
2931         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2932                 list_del(entry);
2933                 kfree((struct vxge_mac_addrs *)entry);
2934         }
2935 }
2936
2937 static void vxge_napi_del_all(struct vxgedev *vdev)
2938 {
2939         int i;
2940         if (vdev->config.intr_type != MSI_X)
2941                 netif_napi_del(&vdev->napi);
2942         else {
2943                 for (i = 0; i < vdev->no_of_vpath; i++)
2944                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2945         }
2946 }
2947
2948 static int do_vxge_close(struct net_device *dev, int do_io)
2949 {
2950         enum vxge_hw_status status;
2951         struct vxgedev *vdev;
2952         struct __vxge_hw_device *hldev;
2953         int i;
2954         u64 val64, vpath_vector;
2955         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2956                 dev->name, __func__, __LINE__);
2957
2958         vdev = netdev_priv(dev);
2959         hldev = pci_get_drvdata(vdev->pdev);
2960
2961         if (unlikely(!is_vxge_card_up(vdev)))
2962                 return 0;
2963
2964         /* If vxge_handle_crit_err task is executing,
2965          * wait till it completes. */
2966         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2967                 msleep(50);
2968
2969         if (do_io) {
2970                 /* Put the vpath back in normal mode */
2971                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2972                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2973                                 vxge_hw_mgmt_reg_type_mrpcim,
2974                                 0,
2975                                 (ulong)offsetof(
2976                                         struct vxge_hw_mrpcim_reg,
2977                                         rts_mgr_cbasin_cfg),
2978                                 &val64);
2979                 if (status == VXGE_HW_OK) {
2980                         val64 &= ~vpath_vector;
2981                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2982                                         vxge_hw_mgmt_reg_type_mrpcim,
2983                                         0,
2984                                         (ulong)offsetof(
2985                                                 struct vxge_hw_mrpcim_reg,
2986                                                 rts_mgr_cbasin_cfg),
2987                                         val64);
2988                 }
2989
2990                 /* Remove the function 0 from promiscuous mode */
2991                 vxge_hw_mgmt_reg_write(vdev->devh,
2992                         vxge_hw_mgmt_reg_type_mrpcim,
2993                         0,
2994                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2995                                 rxmac_authorize_all_addr),
2996                         0);
2997
2998                 vxge_hw_mgmt_reg_write(vdev->devh,
2999                         vxge_hw_mgmt_reg_type_mrpcim,
3000                         0,
3001                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
3002                                 rxmac_authorize_all_vid),
3003                         0);
3004
3005                 smp_wmb();
3006         }
3007
3008         if (vdev->titan1)
3009                 del_timer_sync(&vdev->vp_lockup_timer);
3010
3011         del_timer_sync(&vdev->vp_reset_timer);
3012
3013         if (do_io)
3014                 vxge_hw_device_wait_receive_idle(hldev);
3015
3016         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3017
3018         /* Disable napi */
3019         if (vdev->config.intr_type != MSI_X)
3020                 napi_disable(&vdev->napi);
3021         else {
3022                 for (i = 0; i < vdev->no_of_vpath; i++)
3023                         napi_disable(&vdev->vpaths[i].ring.napi);
3024         }
3025
3026         netif_carrier_off(vdev->ndev);
3027         netdev_notice(vdev->ndev, "Link Down\n");
3028         netif_tx_stop_all_queues(vdev->ndev);
3029
3030         /* Note that at this point xmit() is stopped by upper layer */
3031         if (do_io)
3032                 vxge_hw_device_intr_disable(vdev->devh);
3033
3034         vxge_rem_isr(vdev);
3035
3036         vxge_napi_del_all(vdev);
3037
3038         if (do_io)
3039                 vxge_reset_all_vpaths(vdev);
3040
3041         vxge_close_vpaths(vdev, 0);
3042
3043         vxge_debug_entryexit(VXGE_TRACE,
3044                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3045
3046         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3047
3048         return 0;
3049 }
3050
3051 /**
3052  * vxge_close
3053  * @dev: device pointer.
3054  *
3055  * This is the stop entry point of the driver. It needs to undo exactly
3056  * whatever was done by the open entry point, thus it's usually referred to
3057  * as the close function.Among other things this function mainly stops the
3058  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3059  * Return value: '0' on success and an appropriate (-)ve integer as
3060  * defined in errno.h file on failure.
3061  */
3062 static int vxge_close(struct net_device *dev)
3063 {
3064         do_vxge_close(dev, 1);
3065         return 0;
3066 }
3067
3068 /**
3069  * vxge_change_mtu
3070  * @dev: net device pointer.
3071  * @new_mtu :the new MTU size for the device.
3072  *
3073  * A driver entry point to change MTU size for the device. Before changing
3074  * the MTU the device must be stopped.
3075  */
3076 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3077 {
3078         struct vxgedev *vdev = netdev_priv(dev);
3079
3080         vxge_debug_entryexit(vdev->level_trace,
3081                 "%s:%d", __func__, __LINE__);
3082         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3083                 vxge_debug_init(vdev->level_err,
3084                         "%s: mtu size is invalid", dev->name);
3085                 return -EPERM;
3086         }
3087
3088         /* check if device is down already */
3089         if (unlikely(!is_vxge_card_up(vdev))) {
3090                 /* just store new value, will use later on open() */
3091                 dev->mtu = new_mtu;
3092                 vxge_debug_init(vdev->level_err,
3093                         "%s", "device is down on MTU change");
3094                 return 0;
3095         }
3096
3097         vxge_debug_init(vdev->level_trace,
3098                 "trying to apply new MTU %d", new_mtu);
3099
3100         if (vxge_close(dev))
3101                 return -EIO;
3102
3103         dev->mtu = new_mtu;
3104         vdev->mtu = new_mtu;
3105
3106         if (vxge_open(dev))
3107                 return -EIO;
3108
3109         vxge_debug_init(vdev->level_trace,
3110                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3111
3112         vxge_debug_entryexit(vdev->level_trace,
3113                 "%s:%d  Exiting...", __func__, __LINE__);
3114
3115         return 0;
3116 }
3117
3118 /**
3119  * vxge_get_stats64
3120  * @dev: pointer to the device structure
3121  * @stats: pointer to struct rtnl_link_stats64
3122  *
3123  */
3124 static struct rtnl_link_stats64 *
3125 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3126 {
3127         struct vxgedev *vdev = netdev_priv(dev);
3128         int k;
3129
3130         /* net_stats already zeroed by caller */
3131         for (k = 0; k < vdev->no_of_vpath; k++) {
3132                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3133                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3134                 unsigned int start;
3135                 u64 packets, bytes, multicast;
3136
3137                 do {
3138                         start = u64_stats_fetch_begin_bh(&rxstats->syncp);
3139
3140                         packets   = rxstats->rx_frms;
3141                         multicast = rxstats->rx_mcast;
3142                         bytes     = rxstats->rx_bytes;
3143                 } while (u64_stats_fetch_retry_bh(&rxstats->syncp, start));
3144
3145                 net_stats->rx_packets += packets;
3146                 net_stats->rx_bytes += bytes;
3147                 net_stats->multicast += multicast;
3148
3149                 net_stats->rx_errors += rxstats->rx_errors;
3150                 net_stats->rx_dropped += rxstats->rx_dropped;
3151
3152                 do {
3153                         start = u64_stats_fetch_begin_bh(&txstats->syncp);
3154
3155                         packets = txstats->tx_frms;
3156                         bytes   = txstats->tx_bytes;
3157                 } while (u64_stats_fetch_retry_bh(&txstats->syncp, start));
3158
3159                 net_stats->tx_packets += packets;
3160                 net_stats->tx_bytes += bytes;
3161                 net_stats->tx_errors += txstats->tx_errors;
3162         }
3163
3164         return net_stats;
3165 }
3166
3167 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3168 {
3169         enum vxge_hw_status status;
3170         u64 val64;
3171
3172         /* Timestamp is passed to the driver via the FCS, therefore we
3173          * must disable the FCS stripping by the adapter.  Since this is
3174          * required for the driver to load (due to a hardware bug),
3175          * there is no need to do anything special here.
3176          */
3177         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3178                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3179                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3180
3181         status = vxge_hw_mgmt_reg_write(devh,
3182                                         vxge_hw_mgmt_reg_type_mrpcim,
3183                                         0,
3184                                         offsetof(struct vxge_hw_mrpcim_reg,
3185                                                  xmac_timestamp),
3186                                         val64);
3187         vxge_hw_device_flush_io(devh);
3188         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3189         return status;
3190 }
3191
3192 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3193 {
3194         struct hwtstamp_config config;
3195         int i;
3196
3197         if (copy_from_user(&config, data, sizeof(config)))
3198                 return -EFAULT;
3199
3200         /* reserved for future extensions */
3201         if (config.flags)
3202                 return -EINVAL;
3203
3204         /* Transmit HW Timestamp not supported */
3205         switch (config.tx_type) {
3206         case HWTSTAMP_TX_OFF:
3207                 break;
3208         case HWTSTAMP_TX_ON:
3209         default:
3210                 return -ERANGE;
3211         }
3212
3213         switch (config.rx_filter) {
3214         case HWTSTAMP_FILTER_NONE:
3215                 vdev->rx_hwts = 0;
3216                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3217                 break;
3218
3219         case HWTSTAMP_FILTER_ALL:
3220         case HWTSTAMP_FILTER_SOME:
3221         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3222         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3223         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3224         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3225         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3226         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3227         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3228         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3229         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3230         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3231         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3232         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3233                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3234                         return -EFAULT;
3235
3236                 vdev->rx_hwts = 1;
3237                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3238                 break;
3239
3240         default:
3241                  return -ERANGE;
3242         }
3243
3244         for (i = 0; i < vdev->no_of_vpath; i++)
3245                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3246
3247         if (copy_to_user(data, &config, sizeof(config)))
3248                 return -EFAULT;
3249
3250         return 0;
3251 }
3252
3253 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3254 {
3255         struct hwtstamp_config config;
3256
3257         config.flags = 0;
3258         config.tx_type = HWTSTAMP_TX_OFF;
3259         config.rx_filter = (vdev->rx_hwts ?
3260                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3261
3262         if (copy_to_user(data, &config, sizeof(config)))
3263                 return -EFAULT;
3264
3265         return 0;
3266 }
3267
3268 /**
3269  * vxge_ioctl
3270  * @dev: Device pointer.
3271  * @ifr: An IOCTL specific structure, that can contain a pointer to
3272  *       a proprietary structure used to pass information to the driver.
3273  * @cmd: This is used to distinguish between the different commands that
3274  *       can be passed to the IOCTL functions.
3275  *
3276  * Entry point for the Ioctl.
3277  */
3278 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3279 {
3280         struct vxgedev *vdev = netdev_priv(dev);
3281
3282         switch (cmd) {
3283         case SIOCSHWTSTAMP:
3284                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3285         case SIOCGHWTSTAMP:
3286                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3287         default:
3288                 return -EOPNOTSUPP;
3289         }
3290 }
3291
3292 /**
3293  * vxge_tx_watchdog
3294  * @dev: pointer to net device structure
3295  *
3296  * Watchdog for transmit side.
3297  * This function is triggered if the Tx Queue is stopped
3298  * for a pre-defined amount of time when the Interface is still up.
3299  */
3300 static void vxge_tx_watchdog(struct net_device *dev)
3301 {
3302         struct vxgedev *vdev;
3303
3304         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3305
3306         vdev = netdev_priv(dev);
3307
3308         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3309
3310         schedule_work(&vdev->reset_task);
3311         vxge_debug_entryexit(VXGE_TRACE,
3312                 "%s:%d  Exiting...", __func__, __LINE__);
3313 }
3314
3315 /**
3316  * vxge_vlan_rx_add_vid
3317  * @dev: net device pointer.
3318  * @proto: vlan protocol
3319  * @vid: vid
3320  *
3321  * Add the vlan id to the devices vlan id table
3322  */
3323 static int
3324 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3325 {
3326         struct vxgedev *vdev = netdev_priv(dev);
3327         struct vxge_vpath *vpath;
3328         int vp_id;
3329
3330         /* Add these vlan to the vid table */
3331         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3332                 vpath = &vdev->vpaths[vp_id];
3333                 if (!vpath->is_open)
3334                         continue;
3335                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3336         }
3337         set_bit(vid, vdev->active_vlans);
3338         return 0;
3339 }
3340
3341 /**
3342  * vxge_vlan_rx_kill_vid
3343  * @dev: net device pointer.
3344  * @proto: vlan protocol
3345  * @vid: vid
3346  *
3347  * Remove the vlan id from the device's vlan id table
3348  */
3349 static int
3350 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3351 {
3352         struct vxgedev *vdev = netdev_priv(dev);
3353         struct vxge_vpath *vpath;
3354         int vp_id;
3355
3356         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3357
3358         /* Delete this vlan from the vid table */
3359         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3360                 vpath = &vdev->vpaths[vp_id];
3361                 if (!vpath->is_open)
3362                         continue;
3363                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3364         }
3365         vxge_debug_entryexit(VXGE_TRACE,
3366                 "%s:%d  Exiting...", __func__, __LINE__);
3367         clear_bit(vid, vdev->active_vlans);
3368         return 0;
3369 }
3370
3371 static const struct net_device_ops vxge_netdev_ops = {
3372         .ndo_open               = vxge_open,
3373         .ndo_stop               = vxge_close,
3374         .ndo_get_stats64        = vxge_get_stats64,
3375         .ndo_start_xmit         = vxge_xmit,
3376         .ndo_validate_addr      = eth_validate_addr,
3377         .ndo_set_rx_mode        = vxge_set_multicast,
3378         .ndo_do_ioctl           = vxge_ioctl,
3379         .ndo_set_mac_address    = vxge_set_mac_addr,
3380         .ndo_change_mtu         = vxge_change_mtu,
3381         .ndo_fix_features       = vxge_fix_features,
3382         .ndo_set_features       = vxge_set_features,
3383         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3384         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3385         .ndo_tx_timeout         = vxge_tx_watchdog,
3386 #ifdef CONFIG_NET_POLL_CONTROLLER
3387         .ndo_poll_controller    = vxge_netpoll,
3388 #endif
3389 };
3390
3391 static int vxge_device_register(struct __vxge_hw_device *hldev,
3392                                 struct vxge_config *config, int high_dma,
3393                                 int no_of_vpath, struct vxgedev **vdev_out)
3394 {
3395         struct net_device *ndev;
3396         enum vxge_hw_status status = VXGE_HW_OK;
3397         struct vxgedev *vdev;
3398         int ret = 0, no_of_queue = 1;
3399         u64 stat;
3400
3401         *vdev_out = NULL;
3402         if (config->tx_steering_type)
3403                 no_of_queue = no_of_vpath;
3404
3405         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3406                         no_of_queue);
3407         if (ndev == NULL) {
3408                 vxge_debug_init(
3409                         vxge_hw_device_trace_level_get(hldev),
3410                 "%s : device allocation failed", __func__);
3411                 ret = -ENODEV;
3412                 goto _out0;
3413         }
3414
3415         vxge_debug_entryexit(
3416                 vxge_hw_device_trace_level_get(hldev),
3417                 "%s: %s:%d  Entering...",
3418                 ndev->name, __func__, __LINE__);
3419
3420         vdev = netdev_priv(ndev);
3421         memset(vdev, 0, sizeof(struct vxgedev));
3422
3423         vdev->ndev = ndev;
3424         vdev->devh = hldev;
3425         vdev->pdev = hldev->pdev;
3426         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3427         vdev->rx_hwts = 0;
3428         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3429
3430         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3431
3432         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3433                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3434                 NETIF_F_TSO | NETIF_F_TSO6 |
3435                 NETIF_F_HW_VLAN_CTAG_TX;
3436         if (vdev->config.rth_steering != NO_STEERING)
3437                 ndev->hw_features |= NETIF_F_RXHASH;
3438
3439         ndev->features |= ndev->hw_features |
3440                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3441
3442
3443         ndev->netdev_ops = &vxge_netdev_ops;
3444
3445         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3446         INIT_WORK(&vdev->reset_task, vxge_reset);
3447
3448         vxge_initialize_ethtool_ops(ndev);
3449
3450         /* Allocate memory for vpath */
3451         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3452                                 no_of_vpath, GFP_KERNEL);
3453         if (!vdev->vpaths) {
3454                 vxge_debug_init(VXGE_ERR,
3455                         "%s: vpath memory allocation failed",
3456                         vdev->ndev->name);
3457                 ret = -ENOMEM;
3458                 goto _out1;
3459         }
3460
3461         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3462                 "%s : checksumming enabled", __func__);
3463
3464         if (high_dma) {
3465                 ndev->features |= NETIF_F_HIGHDMA;
3466                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3467                         "%s : using High DMA", __func__);
3468         }
3469
3470         ret = register_netdev(ndev);
3471         if (ret) {
3472                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3473                         "%s: %s : device registration failed!",
3474                         ndev->name, __func__);
3475                 goto _out2;
3476         }
3477
3478         /*  Set the factory defined MAC address initially */
3479         ndev->addr_len = ETH_ALEN;
3480
3481         /* Make Link state as off at this point, when the Link change
3482          * interrupt comes the state will be automatically changed to
3483          * the right state.
3484          */
3485         netif_carrier_off(ndev);
3486
3487         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3488                 "%s: Ethernet device registered",
3489                 ndev->name);
3490
3491         hldev->ndev = ndev;
3492         *vdev_out = vdev;
3493
3494         /* Resetting the Device stats */
3495         status = vxge_hw_mrpcim_stats_access(
3496                                 hldev,
3497                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3498                                 0,
3499                                 0,
3500                                 &stat);
3501
3502         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3503                 vxge_debug_init(
3504                         vxge_hw_device_trace_level_get(hldev),
3505                         "%s: device stats clear returns"
3506                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3507
3508         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3509                 "%s: %s:%d  Exiting...",
3510                 ndev->name, __func__, __LINE__);
3511
3512         return ret;
3513 _out2:
3514         kfree(vdev->vpaths);
3515 _out1:
3516         free_netdev(ndev);
3517 _out0:
3518         return ret;
3519 }
3520
3521 /*
3522  * vxge_device_unregister
3523  *
3524  * This function will unregister and free network device
3525  */
3526 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3527 {
3528         struct vxgedev *vdev;
3529         struct net_device *dev;
3530         char buf[IFNAMSIZ];
3531
3532         dev = hldev->ndev;
3533         vdev = netdev_priv(dev);
3534
3535         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3536                              __func__, __LINE__);
3537
3538         strncpy(buf, dev->name, IFNAMSIZ);
3539
3540         flush_work(&vdev->reset_task);
3541
3542         /* in 2.6 will call stop() if device is up */
3543         unregister_netdev(dev);
3544
3545         kfree(vdev->vpaths);
3546
3547         /* we are safe to free it now */
3548         free_netdev(dev);
3549
3550         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3551                         buf);
3552         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3553                              __func__, __LINE__);
3554 }
3555
3556 /*
3557  * vxge_callback_crit_err
3558  *
3559  * This function is called by the alarm handler in interrupt context.
3560  * Driver must analyze it based on the event type.
3561  */
3562 static void
3563 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3564                         enum vxge_hw_event type, u64 vp_id)
3565 {
3566         struct net_device *dev = hldev->ndev;
3567         struct vxgedev *vdev = netdev_priv(dev);
3568         struct vxge_vpath *vpath = NULL;
3569         int vpath_idx;
3570
3571         vxge_debug_entryexit(vdev->level_trace,
3572                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3573
3574         /* Note: This event type should be used for device wide
3575          * indications only - Serious errors, Slot freeze and critical errors
3576          */
3577         vdev->cric_err_event = type;
3578
3579         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3580                 vpath = &vdev->vpaths[vpath_idx];
3581                 if (vpath->device_id == vp_id)
3582                         break;
3583         }
3584
3585         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3586                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3587                         vxge_debug_init(VXGE_ERR,
3588                                 "%s: Slot is frozen", vdev->ndev->name);
3589                 } else if (type == VXGE_HW_EVENT_SERR) {
3590                         vxge_debug_init(VXGE_ERR,
3591                                 "%s: Encountered Serious Error",
3592                                 vdev->ndev->name);
3593                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3594                         vxge_debug_init(VXGE_ERR,
3595                                 "%s: Encountered Critical Error",
3596                                 vdev->ndev->name);
3597         }
3598
3599         if ((type == VXGE_HW_EVENT_SERR) ||
3600                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3601                 if (unlikely(vdev->exec_mode))
3602                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3603         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3604                 vxge_hw_device_mask_all(hldev);
3605                 if (unlikely(vdev->exec_mode))
3606                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3607         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3608                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3609
3610                 if (unlikely(vdev->exec_mode))
3611                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3612                 else {
3613                         /* check if this vpath is already set for reset */
3614                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3615
3616                                 /* disable interrupts for this vpath */
3617                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3618
3619                                 /* stop the queue for this vpath */
3620                                 netif_tx_stop_queue(vpath->fifo.txq);
3621                         }
3622                 }
3623         }
3624
3625         vxge_debug_entryexit(vdev->level_trace,
3626                 "%s: %s:%d  Exiting...",
3627                 vdev->ndev->name, __func__, __LINE__);
3628 }
3629
3630 static void verify_bandwidth(void)
3631 {
3632         int i, band_width, total = 0, equal_priority = 0;
3633
3634         /* 1. If user enters 0 for some fifo, give equal priority to all */
3635         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3636                 if (bw_percentage[i] == 0) {
3637                         equal_priority = 1;
3638                         break;
3639                 }
3640         }
3641
3642         if (!equal_priority) {
3643                 /* 2. If sum exceeds 100, give equal priority to all */
3644                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3645                         if (bw_percentage[i] == 0xFF)
3646                                 break;
3647
3648                         total += bw_percentage[i];
3649                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3650                                 equal_priority = 1;
3651                                 break;
3652                         }
3653                 }
3654         }
3655
3656         if (!equal_priority) {
3657                 /* Is all the bandwidth consumed? */
3658                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3659                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3660                                 /* Split rest of bw equally among next VPs*/
3661                                 band_width =
3662                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3663                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3664                                 if (band_width < 2) /* min of 2% */
3665                                         equal_priority = 1;
3666                                 else {
3667                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3668                                                 i++)
3669                                                 bw_percentage[i] =
3670                                                         band_width;
3671                                 }
3672                         }
3673                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3674                         equal_priority = 1;
3675         }
3676
3677         if (equal_priority) {
3678                 vxge_debug_init(VXGE_ERR,
3679                         "%s: Assigning equal bandwidth to all the vpaths",
3680                         VXGE_DRIVER_NAME);
3681                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3682                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3683                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3684                         bw_percentage[i] = bw_percentage[0];
3685         }
3686 }
3687
3688 /*
3689  * Vpath configuration
3690  */
3691 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3692                               u64 vpath_mask, struct vxge_config *config_param)
3693 {
3694         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3695         u32 txdl_size, txdl_per_memblock;
3696
3697         temp = driver_config->vpath_per_dev;
3698         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3699                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3700                 /* No more CPU. Return vpath number as zero.*/
3701                 if (driver_config->g_no_cpus == -1)
3702                         return 0;
3703
3704                 if (!driver_config->g_no_cpus)
3705                         driver_config->g_no_cpus =
3706                                 netif_get_num_default_rss_queues();
3707
3708                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3709                 if (!driver_config->vpath_per_dev)
3710                         driver_config->vpath_per_dev = 1;
3711
3712                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3713                         if (!vxge_bVALn(vpath_mask, i, 1))
3714                                 continue;
3715                         else
3716                                 default_no_vpath++;
3717                 if (default_no_vpath < driver_config->vpath_per_dev)
3718                         driver_config->vpath_per_dev = default_no_vpath;
3719
3720                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3721                                 (driver_config->vpath_per_dev * 2);
3722                 if (driver_config->g_no_cpus <= 0)
3723                         driver_config->g_no_cpus = -1;
3724         }
3725
3726         if (driver_config->vpath_per_dev == 1) {
3727                 vxge_debug_ll_config(VXGE_TRACE,
3728                         "%s: Disable tx and rx steering, "
3729                         "as single vpath is configured", VXGE_DRIVER_NAME);
3730                 config_param->rth_steering = NO_STEERING;
3731                 config_param->tx_steering_type = NO_STEERING;
3732                 device_config->rth_en = 0;
3733         }
3734
3735         /* configure bandwidth */
3736         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3737                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3738
3739         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3740                 device_config->vp_config[i].vp_id = i;
3741                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3742                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3743                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3744                                 vxge_debug_ll_config(VXGE_TRACE,
3745                                         "%s: vpath: %d is not available",
3746                                         VXGE_DRIVER_NAME, i);
3747                                 continue;
3748                         } else {
3749                                 vxge_debug_ll_config(VXGE_TRACE,
3750                                         "%s: vpath: %d available",
3751                                         VXGE_DRIVER_NAME, i);
3752                                 no_of_vpaths++;
3753                         }
3754                 } else {
3755                         vxge_debug_ll_config(VXGE_TRACE,
3756                                 "%s: vpath: %d is not configured, "
3757                                 "max_config_vpath exceeded",
3758                                 VXGE_DRIVER_NAME, i);
3759                         break;
3760                 }
3761
3762                 /* Configure Tx fifo's */
3763                 device_config->vp_config[i].fifo.enable =
3764                                                 VXGE_HW_FIFO_ENABLE;
3765                 device_config->vp_config[i].fifo.max_frags =
3766                                 MAX_SKB_FRAGS + 1;
3767                 device_config->vp_config[i].fifo.memblock_size =
3768                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3769
3770                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3771                                 sizeof(struct vxge_hw_fifo_txd);
3772                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3773
3774                 device_config->vp_config[i].fifo.fifo_blocks =
3775                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3776
3777                 device_config->vp_config[i].fifo.intr =
3778                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3779
3780                 /* Configure tti properties */
3781                 device_config->vp_config[i].tti.intr_enable =
3782                                         VXGE_HW_TIM_INTR_ENABLE;
3783
3784                 device_config->vp_config[i].tti.btimer_val =
3785                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3786
3787                 device_config->vp_config[i].tti.timer_ac_en =
3788                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3789
3790                 /* For msi-x with napi (each vector has a handler of its own) -
3791                  * Set CI to OFF for all vpaths
3792                  */
3793                 device_config->vp_config[i].tti.timer_ci_en =
3794                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3795
3796                 device_config->vp_config[i].tti.timer_ri_en =
3797                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3798
3799                 device_config->vp_config[i].tti.util_sel =
3800                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3801
3802                 device_config->vp_config[i].tti.ltimer_val =
3803                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3804
3805                 device_config->vp_config[i].tti.rtimer_val =
3806                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3807
3808                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3809                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3810                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3811                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3812                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3813                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3814                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3815
3816                 /* Configure Rx rings */
3817                 device_config->vp_config[i].ring.enable  =
3818                                                 VXGE_HW_RING_ENABLE;
3819
3820                 device_config->vp_config[i].ring.ring_blocks  =
3821                                                 VXGE_HW_DEF_RING_BLOCKS;
3822
3823                 device_config->vp_config[i].ring.buffer_mode =
3824                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3825
3826                 device_config->vp_config[i].ring.rxds_limit  =
3827                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3828
3829                 device_config->vp_config[i].ring.scatter_mode =
3830                                         VXGE_HW_RING_SCATTER_MODE_A;
3831
3832                 /* Configure rti properties */
3833                 device_config->vp_config[i].rti.intr_enable =
3834                                         VXGE_HW_TIM_INTR_ENABLE;
3835
3836                 device_config->vp_config[i].rti.btimer_val =
3837                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3838
3839                 device_config->vp_config[i].rti.timer_ac_en =
3840                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3841
3842                 device_config->vp_config[i].rti.timer_ci_en =
3843                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3844
3845                 device_config->vp_config[i].rti.timer_ri_en =
3846                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3847
3848                 device_config->vp_config[i].rti.util_sel =
3849                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3850
3851                 device_config->vp_config[i].rti.urange_a =
3852                                                 RTI_RX_URANGE_A;
3853                 device_config->vp_config[i].rti.urange_b =
3854                                                 RTI_RX_URANGE_B;
3855                 device_config->vp_config[i].rti.urange_c =
3856                                                 RTI_RX_URANGE_C;
3857                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3858                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3859                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3860                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3861
3862                 device_config->vp_config[i].rti.rtimer_val =
3863                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3864
3865                 device_config->vp_config[i].rti.ltimer_val =
3866                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3867
3868                 device_config->vp_config[i].rpa_strip_vlan_tag =
3869                         vlan_tag_strip;
3870         }
3871
3872         driver_config->vpath_per_dev = temp;
3873         return no_of_vpaths;
3874 }
3875
3876 /* initialize device configuratrions */
3877 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3878                                     int *intr_type)
3879 {
3880         /* Used for CQRQ/SRQ. */
3881         device_config->dma_blockpool_initial =
3882                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3883
3884         device_config->dma_blockpool_max =
3885                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3886
3887         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3888                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3889
3890 #ifndef CONFIG_PCI_MSI
3891         vxge_debug_init(VXGE_ERR,
3892                 "%s: This Kernel does not support "
3893                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3894         *intr_type = INTA;
3895 #endif
3896
3897         /* Configure whether MSI-X or IRQL. */
3898         switch (*intr_type) {
3899         case INTA:
3900                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3901                 break;
3902
3903         case MSI_X:
3904                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3905                 break;
3906         }
3907
3908         /* Timer period between device poll */
3909         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3910
3911         /* Configure mac based steering. */
3912         device_config->rts_mac_en = addr_learn_en;
3913
3914         /* Configure Vpaths */
3915         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3916
3917         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3918                         __func__);
3919         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3920                         device_config->intr_mode);
3921         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3922                         device_config->device_poll_millis);
3923         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3924                         device_config->rth_en);
3925         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3926                         device_config->rth_it_type);
3927 }
3928
3929 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3930 {
3931         int i;
3932
3933         vxge_debug_init(VXGE_TRACE,
3934                 "%s: %d Vpath(s) opened",
3935                 vdev->ndev->name, vdev->no_of_vpath);
3936
3937         switch (vdev->config.intr_type) {
3938         case INTA:
3939                 vxge_debug_init(VXGE_TRACE,
3940                         "%s: Interrupt type INTA", vdev->ndev->name);
3941                 break;
3942
3943         case MSI_X:
3944                 vxge_debug_init(VXGE_TRACE,
3945                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3946                 break;
3947         }
3948
3949         if (vdev->config.rth_steering) {
3950                 vxge_debug_init(VXGE_TRACE,
3951                         "%s: RTH steering enabled for TCP_IPV4",
3952                         vdev->ndev->name);
3953         } else {
3954                 vxge_debug_init(VXGE_TRACE,
3955                         "%s: RTH steering disabled", vdev->ndev->name);
3956         }
3957
3958         switch (vdev->config.tx_steering_type) {
3959         case NO_STEERING:
3960                 vxge_debug_init(VXGE_TRACE,
3961                         "%s: Tx steering disabled", vdev->ndev->name);
3962                 break;
3963         case TX_PRIORITY_STEERING:
3964                 vxge_debug_init(VXGE_TRACE,
3965                         "%s: Unsupported tx steering option",
3966                         vdev->ndev->name);
3967                 vxge_debug_init(VXGE_TRACE,
3968                         "%s: Tx steering disabled", vdev->ndev->name);
3969                 vdev->config.tx_steering_type = 0;
3970                 break;
3971         case TX_VLAN_STEERING:
3972                 vxge_debug_init(VXGE_TRACE,
3973                         "%s: Unsupported tx steering option",
3974                         vdev->ndev->name);
3975                 vxge_debug_init(VXGE_TRACE,
3976                         "%s: Tx steering disabled", vdev->ndev->name);
3977                 vdev->config.tx_steering_type = 0;
3978                 break;
3979         case TX_MULTIQ_STEERING:
3980                 vxge_debug_init(VXGE_TRACE,
3981                         "%s: Tx multiqueue steering enabled",
3982                         vdev->ndev->name);
3983                 break;
3984         case TX_PORT_STEERING:
3985                 vxge_debug_init(VXGE_TRACE,
3986                         "%s: Tx port steering enabled",
3987                         vdev->ndev->name);
3988                 break;
3989         default:
3990                 vxge_debug_init(VXGE_ERR,
3991                         "%s: Unsupported tx steering type",
3992                         vdev->ndev->name);
3993                 vxge_debug_init(VXGE_TRACE,
3994                         "%s: Tx steering disabled", vdev->ndev->name);
3995                 vdev->config.tx_steering_type = 0;
3996         }
3997
3998         if (vdev->config.addr_learn_en)
3999                 vxge_debug_init(VXGE_TRACE,
4000                         "%s: MAC Address learning enabled", vdev->ndev->name);
4001
4002         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4003                 if (!vxge_bVALn(vpath_mask, i, 1))
4004                         continue;
4005                 vxge_debug_ll_config(VXGE_TRACE,
4006                         "%s: MTU size - %d", vdev->ndev->name,
4007                         ((vdev->devh))->
4008                                 config.vp_config[i].mtu);
4009                 vxge_debug_init(VXGE_TRACE,
4010                         "%s: VLAN tag stripping %s", vdev->ndev->name,
4011                         ((vdev->devh))->
4012                                 config.vp_config[i].rpa_strip_vlan_tag
4013                         ? "Enabled" : "Disabled");
4014                 vxge_debug_ll_config(VXGE_TRACE,
4015                         "%s: Max frags : %d", vdev->ndev->name,
4016                         ((vdev->devh))->
4017                                 config.vp_config[i].fifo.max_frags);
4018                 break;
4019         }
4020 }
4021
4022 #ifdef CONFIG_PM
4023 /**
4024  * vxge_pm_suspend - vxge power management suspend entry point
4025  *
4026  */
4027 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4028 {
4029         return -ENOSYS;
4030 }
4031 /**
4032  * vxge_pm_resume - vxge power management resume entry point
4033  *
4034  */
4035 static int vxge_pm_resume(struct pci_dev *pdev)
4036 {
4037         return -ENOSYS;
4038 }
4039
4040 #endif
4041
4042 /**
4043  * vxge_io_error_detected - called when PCI error is detected
4044  * @pdev: Pointer to PCI device
4045  * @state: The current pci connection state
4046  *
4047  * This function is called after a PCI bus error affecting
4048  * this device has been detected.
4049  */
4050 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4051                                                 pci_channel_state_t state)
4052 {
4053         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4054         struct net_device *netdev = hldev->ndev;
4055
4056         netif_device_detach(netdev);
4057
4058         if (state == pci_channel_io_perm_failure)
4059                 return PCI_ERS_RESULT_DISCONNECT;
4060
4061         if (netif_running(netdev)) {
4062                 /* Bring down the card, while avoiding PCI I/O */
4063                 do_vxge_close(netdev, 0);
4064         }
4065
4066         pci_disable_device(pdev);
4067
4068         return PCI_ERS_RESULT_NEED_RESET;
4069 }
4070
4071 /**
4072  * vxge_io_slot_reset - called after the pci bus has been reset.
4073  * @pdev: Pointer to PCI device
4074  *
4075  * Restart the card from scratch, as if from a cold-boot.
4076  * At this point, the card has exprienced a hard reset,
4077  * followed by fixups by BIOS, and has its config space
4078  * set up identically to what it was at cold boot.
4079  */
4080 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4081 {
4082         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4083         struct net_device *netdev = hldev->ndev;
4084
4085         struct vxgedev *vdev = netdev_priv(netdev);
4086
4087         if (pci_enable_device(pdev)) {
4088                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4089                 return PCI_ERS_RESULT_DISCONNECT;
4090         }
4091
4092         pci_set_master(pdev);
4093         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4094
4095         return PCI_ERS_RESULT_RECOVERED;
4096 }
4097
4098 /**
4099  * vxge_io_resume - called when traffic can start flowing again.
4100  * @pdev: Pointer to PCI device
4101  *
4102  * This callback is called when the error recovery driver tells
4103  * us that its OK to resume normal operation.
4104  */
4105 static void vxge_io_resume(struct pci_dev *pdev)
4106 {
4107         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4108         struct net_device *netdev = hldev->ndev;
4109
4110         if (netif_running(netdev)) {
4111                 if (vxge_open(netdev)) {
4112                         netdev_err(netdev,
4113                                    "Can't bring device back up after reset\n");
4114                         return;
4115                 }
4116         }
4117
4118         netif_device_attach(netdev);
4119 }
4120
4121 static inline u32 vxge_get_num_vfs(u64 function_mode)
4122 {
4123         u32 num_functions = 0;
4124
4125         switch (function_mode) {
4126         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4127         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4128                 num_functions = 8;
4129                 break;
4130         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4131                 num_functions = 1;
4132                 break;
4133         case VXGE_HW_FUNCTION_MODE_SRIOV:
4134         case VXGE_HW_FUNCTION_MODE_MRIOV:
4135         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4136                 num_functions = 17;
4137                 break;
4138         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4139                 num_functions = 4;
4140                 break;
4141         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4142                 num_functions = 2;
4143                 break;
4144         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4145                 num_functions = 8; /* TODO */
4146                 break;
4147         }
4148         return num_functions;
4149 }
4150
4151 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4152 {
4153         struct __vxge_hw_device *hldev = vdev->devh;
4154         u32 maj, min, bld, cmaj, cmin, cbld;
4155         enum vxge_hw_status status;
4156         const struct firmware *fw;
4157         int ret;
4158
4159         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4160         if (ret) {
4161                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4162                                 VXGE_DRIVER_NAME, fw_name);
4163                 goto out;
4164         }
4165
4166         /* Load the new firmware onto the adapter */
4167         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4168         if (status != VXGE_HW_OK) {
4169                 vxge_debug_init(VXGE_ERR,
4170                                 "%s: FW image download to adapter failed '%s'.",
4171                                 VXGE_DRIVER_NAME, fw_name);
4172                 ret = -EIO;
4173                 goto out;
4174         }
4175
4176         /* Read the version of the new firmware */
4177         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4178         if (status != VXGE_HW_OK) {
4179                 vxge_debug_init(VXGE_ERR,
4180                                 "%s: Upgrade read version failed '%s'.",
4181                                 VXGE_DRIVER_NAME, fw_name);
4182                 ret = -EIO;
4183                 goto out;
4184         }
4185
4186         cmaj = vdev->config.device_hw_info.fw_version.major;
4187         cmin = vdev->config.device_hw_info.fw_version.minor;
4188         cbld = vdev->config.device_hw_info.fw_version.build;
4189         /* It's possible the version in /lib/firmware is not the latest version.
4190          * If so, we could get into a loop of trying to upgrade to the latest
4191          * and flashing the older version.
4192          */
4193         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4194             !override) {
4195                 ret = -EINVAL;
4196                 goto out;
4197         }
4198
4199         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4200                maj, min, bld);
4201
4202         /* Flash the adapter with the new firmware */
4203         status = vxge_hw_flash_fw(hldev);
4204         if (status != VXGE_HW_OK) {
4205                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4206                                 VXGE_DRIVER_NAME, fw_name);
4207                 ret = -EIO;
4208                 goto out;
4209         }
4210
4211         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4212                "hard reset before using, thus requiring a system reboot or a "
4213                "hotplug event.\n");
4214
4215 out:
4216         release_firmware(fw);
4217         return ret;
4218 }
4219
4220 static int vxge_probe_fw_update(struct vxgedev *vdev)
4221 {
4222         u32 maj, min, bld;
4223         int ret, gpxe = 0;
4224         char *fw_name;
4225
4226         maj = vdev->config.device_hw_info.fw_version.major;
4227         min = vdev->config.device_hw_info.fw_version.minor;
4228         bld = vdev->config.device_hw_info.fw_version.build;
4229
4230         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4231                 return 0;
4232
4233         /* Ignore the build number when determining if the current firmware is
4234          * "too new" to load the driver
4235          */
4236         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4237                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4238                                 "version, unable to load driver\n",
4239                                 VXGE_DRIVER_NAME);
4240                 return -EINVAL;
4241         }
4242
4243         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4244          * work with this driver.
4245          */
4246         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4247                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4248                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4249                 return -EINVAL;
4250         }
4251
4252         /* If file not specified, determine gPXE or not */
4253         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4254                 int i;
4255                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4256                         if (vdev->devh->eprom_versions[i]) {
4257                                 gpxe = 1;
4258                                 break;
4259                         }
4260         }
4261         if (gpxe)
4262                 fw_name = "vxge/X3fw-pxe.ncf";
4263         else
4264                 fw_name = "vxge/X3fw.ncf";
4265
4266         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4267         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4268          * probe, so ignore them
4269          */
4270         if (ret != -EINVAL && ret != -ENOENT)
4271                 return -EIO;
4272         else
4273                 ret = 0;
4274
4275         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4276             VXGE_FW_VER(maj, min, 0)) {
4277                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4278                                 " be used with this driver.",
4279                                 VXGE_DRIVER_NAME, maj, min, bld);
4280                 return -EINVAL;
4281         }
4282
4283         return ret;
4284 }
4285
4286 static int is_sriov_initialized(struct pci_dev *pdev)
4287 {
4288         int pos;
4289         u16 ctrl;
4290
4291         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4292         if (pos) {
4293                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4294                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4295                         return 1;
4296         }
4297         return 0;
4298 }
4299
4300 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4301         .link_up = vxge_callback_link_up,
4302         .link_down = vxge_callback_link_down,
4303         .crit_err = vxge_callback_crit_err,
4304 };
4305
4306 /**
4307  * vxge_probe
4308  * @pdev : structure containing the PCI related information of the device.
4309  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4310  * Description:
4311  * This function is called when a new PCI device gets detected and initializes
4312  * it.
4313  * Return value:
4314  * returns 0 on success and negative on failure.
4315  *
4316  */
4317 static int
4318 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4319 {
4320         struct __vxge_hw_device *hldev;
4321         enum vxge_hw_status status;
4322         int ret;
4323         int high_dma = 0;
4324         u64 vpath_mask = 0;
4325         struct vxgedev *vdev;
4326         struct vxge_config *ll_config = NULL;
4327         struct vxge_hw_device_config *device_config = NULL;
4328         struct vxge_hw_device_attr attr;
4329         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4330         u8 *macaddr;
4331         struct vxge_mac_addrs *entry;
4332         static int bus = -1, device = -1;
4333         u32 host_type;
4334         u8 new_device = 0;
4335         enum vxge_hw_status is_privileged;
4336         u32 function_mode;
4337         u32 num_vfs = 0;
4338
4339         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4340         attr.pdev = pdev;
4341
4342         /* In SRIOV-17 mode, functions of the same adapter
4343          * can be deployed on different buses
4344          */
4345         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4346             !pdev->is_virtfn)
4347                 new_device = 1;
4348
4349         bus = pdev->bus->number;
4350         device = PCI_SLOT(pdev->devfn);
4351
4352         if (new_device) {
4353                 if (driver_config->config_dev_cnt &&
4354                    (driver_config->config_dev_cnt !=
4355                         driver_config->total_dev_cnt))
4356                         vxge_debug_init(VXGE_ERR,
4357                                 "%s: Configured %d of %d devices",
4358                                 VXGE_DRIVER_NAME,
4359                                 driver_config->config_dev_cnt,
4360                                 driver_config->total_dev_cnt);
4361                 driver_config->config_dev_cnt = 0;
4362                 driver_config->total_dev_cnt = 0;
4363         }
4364
4365         /* Now making the CPU based no of vpath calculation
4366          * applicable for individual functions as well.
4367          */
4368         driver_config->g_no_cpus = 0;
4369         driver_config->vpath_per_dev = max_config_vpath;
4370
4371         driver_config->total_dev_cnt++;
4372         if (++driver_config->config_dev_cnt > max_config_dev) {
4373                 ret = 0;
4374                 goto _exit0;
4375         }
4376
4377         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4378                 GFP_KERNEL);
4379         if (!device_config) {
4380                 ret = -ENOMEM;
4381                 vxge_debug_init(VXGE_ERR,
4382                         "device_config : malloc failed %s %d",
4383                         __FILE__, __LINE__);
4384                 goto _exit0;
4385         }
4386
4387         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4388         if (!ll_config) {
4389                 ret = -ENOMEM;
4390                 vxge_debug_init(VXGE_ERR,
4391                         "device_config : malloc failed %s %d",
4392                         __FILE__, __LINE__);
4393                 goto _exit0;
4394         }
4395         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4396         ll_config->intr_type = MSI_X;
4397         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4398         ll_config->rth_steering = RTH_STEERING;
4399
4400         /* get the default configuration parameters */
4401         vxge_hw_device_config_default_get(device_config);
4402
4403         /* initialize configuration parameters */
4404         vxge_device_config_init(device_config, &ll_config->intr_type);
4405
4406         ret = pci_enable_device(pdev);
4407         if (ret) {
4408                 vxge_debug_init(VXGE_ERR,
4409                         "%s : can not enable PCI device", __func__);
4410                 goto _exit0;
4411         }
4412
4413         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4414                 vxge_debug_ll_config(VXGE_TRACE,
4415                         "%s : using 64bit DMA", __func__);
4416
4417                 high_dma = 1;
4418
4419                 if (pci_set_consistent_dma_mask(pdev,
4420                                                 DMA_BIT_MASK(64))) {
4421                         vxge_debug_init(VXGE_ERR,
4422                                 "%s : unable to obtain 64bit DMA for "
4423                                 "consistent allocations", __func__);
4424                         ret = -ENOMEM;
4425                         goto _exit1;
4426                 }
4427         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4428                 vxge_debug_ll_config(VXGE_TRACE,
4429                         "%s : using 32bit DMA", __func__);
4430         } else {
4431                 ret = -ENOMEM;
4432                 goto _exit1;
4433         }
4434
4435         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4436         if (ret) {
4437                 vxge_debug_init(VXGE_ERR,
4438                         "%s : request regions failed", __func__);
4439                 goto _exit1;
4440         }
4441
4442         pci_set_master(pdev);
4443
4444         attr.bar0 = pci_ioremap_bar(pdev, 0);
4445         if (!attr.bar0) {
4446                 vxge_debug_init(VXGE_ERR,
4447                         "%s : cannot remap io memory bar0", __func__);
4448                 ret = -ENODEV;
4449                 goto _exit2;
4450         }
4451         vxge_debug_ll_config(VXGE_TRACE,
4452                 "pci ioremap bar0: %p:0x%llx",
4453                 attr.bar0,
4454                 (unsigned long long)pci_resource_start(pdev, 0));
4455
4456         status = vxge_hw_device_hw_info_get(attr.bar0,
4457                         &ll_config->device_hw_info);
4458         if (status != VXGE_HW_OK) {
4459                 vxge_debug_init(VXGE_ERR,
4460                         "%s: Reading of hardware info failed."
4461                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4462                 ret = -EINVAL;
4463                 goto _exit3;
4464         }
4465
4466         vpath_mask = ll_config->device_hw_info.vpath_mask;
4467         if (vpath_mask == 0) {
4468                 vxge_debug_ll_config(VXGE_TRACE,
4469                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4470                 ret = -EINVAL;
4471                 goto _exit3;
4472         }
4473
4474         vxge_debug_ll_config(VXGE_TRACE,
4475                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4476                 (unsigned long long)vpath_mask);
4477
4478         function_mode = ll_config->device_hw_info.function_mode;
4479         host_type = ll_config->device_hw_info.host_type;
4480         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4481                 ll_config->device_hw_info.func_id);
4482
4483         /* Check how many vpaths are available */
4484         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4485                 if (!((vpath_mask) & vxge_mBIT(i)))
4486                         continue;
4487                 max_vpath_supported++;
4488         }
4489
4490         if (new_device)
4491                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4492
4493         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4494         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4495            (ll_config->intr_type != INTA)) {
4496                 ret = pci_enable_sriov(pdev, num_vfs);
4497                 if (ret)
4498                         vxge_debug_ll_config(VXGE_ERR,
4499                                 "Failed in enabling SRIOV mode: %d\n", ret);
4500                         /* No need to fail out, as an error here is non-fatal */
4501         }
4502
4503         /*
4504          * Configure vpaths and get driver configured number of vpaths
4505          * which is less than or equal to the maximum vpaths per function.
4506          */
4507         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4508         if (!no_of_vpath) {
4509                 vxge_debug_ll_config(VXGE_ERR,
4510                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4511                 ret = 0;
4512                 goto _exit3;
4513         }
4514
4515         /* Setting driver callbacks */
4516         attr.uld_callbacks = &vxge_callbacks;
4517
4518         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4519         if (status != VXGE_HW_OK) {
4520                 vxge_debug_init(VXGE_ERR,
4521                         "Failed to initialize device (%d)", status);
4522                         ret = -EINVAL;
4523                         goto _exit3;
4524         }
4525
4526         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4527                         ll_config->device_hw_info.fw_version.minor,
4528                         ll_config->device_hw_info.fw_version.build) >=
4529             VXGE_EPROM_FW_VER) {
4530                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4531
4532                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4533                 if (status != VXGE_HW_OK) {
4534                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4535                                         VXGE_DRIVER_NAME);
4536                         /* This is a non-fatal error, continue */
4537                 }
4538
4539                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4540                         hldev->eprom_versions[i] = img[i].version;
4541                         if (!img[i].is_valid)
4542                                 break;
4543                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4544                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4545                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4546                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4547                                         VXGE_EPROM_IMG_FIX(img[i].version),
4548                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4549                 }
4550         }
4551
4552         /* if FCS stripping is not disabled in MAC fail driver load */
4553         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4554         if (status != VXGE_HW_OK) {
4555                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4556                                 " failing driver load", VXGE_DRIVER_NAME);
4557                 ret = -EINVAL;
4558                 goto _exit4;
4559         }
4560
4561         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4562          * due to the fact that HWTS is using the FCS as the location of the
4563          * timestamp.  The HW FCS checking will still correctly determine if
4564          * there is a valid checksum, and the FCS is being removed by the driver
4565          * anyway.  So no fucntionality is being lost.  Since it is always
4566          * enabled, we now simply use the ioctl call to set whether or not the
4567          * driver should be paying attention to the HWTS.
4568          */
4569         if (is_privileged == VXGE_HW_OK) {
4570                 status = vxge_timestamp_config(hldev);
4571                 if (status != VXGE_HW_OK) {
4572                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4573                                         VXGE_DRIVER_NAME);
4574                         ret = -EFAULT;
4575                         goto _exit4;
4576                 }
4577         }
4578
4579         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4580
4581         /* set private device info */
4582         pci_set_drvdata(pdev, hldev);
4583
4584         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4585         ll_config->addr_learn_en = addr_learn_en;
4586         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4587         ll_config->rth_hash_type_tcpipv4 = 1;
4588         ll_config->rth_hash_type_ipv4 = 0;
4589         ll_config->rth_hash_type_tcpipv6 = 0;
4590         ll_config->rth_hash_type_ipv6 = 0;
4591         ll_config->rth_hash_type_tcpipv6ex = 0;
4592         ll_config->rth_hash_type_ipv6ex = 0;
4593         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4594         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4595         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4596
4597         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4598                                    &vdev);
4599         if (ret) {
4600                 ret = -EINVAL;
4601                 goto _exit4;
4602         }
4603
4604         ret = vxge_probe_fw_update(vdev);
4605         if (ret)
4606                 goto _exit5;
4607
4608         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4609         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4610                 vxge_hw_device_trace_level_get(hldev));
4611
4612         /* set private HW device info */
4613         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4614         vdev->bar0 = attr.bar0;
4615         vdev->max_vpath_supported = max_vpath_supported;
4616         vdev->no_of_vpath = no_of_vpath;
4617
4618         /* Virtual Path count */
4619         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4620                 if (!vxge_bVALn(vpath_mask, i, 1))
4621                         continue;
4622                 if (j >= vdev->no_of_vpath)
4623                         break;
4624
4625                 vdev->vpaths[j].is_configured = 1;
4626                 vdev->vpaths[j].device_id = i;
4627                 vdev->vpaths[j].ring.driver_id = j;
4628                 vdev->vpaths[j].vdev = vdev;
4629                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4630                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4631                                 ll_config->device_hw_info.mac_addrs[i],
4632                                 ETH_ALEN);
4633
4634                 /* Initialize the mac address list header */
4635                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4636
4637                 vdev->vpaths[j].mac_addr_cnt = 0;
4638                 vdev->vpaths[j].mcast_addr_cnt = 0;
4639                 j++;
4640         }
4641         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4642         vdev->max_config_port = max_config_port;
4643
4644         vdev->vlan_tag_strip = vlan_tag_strip;
4645
4646         /* map the hashing selector table to the configured vpaths */
4647         for (i = 0; i < vdev->no_of_vpath; i++)
4648                 vdev->vpath_selector[i] = vpath_selector[i];
4649
4650         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4651
4652         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4653         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4654         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4655
4656         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4657                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4658
4659         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4660                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4661
4662         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4663                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4664
4665         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4666                 vdev->ndev->name, macaddr);
4667
4668         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4669                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4670
4671         vxge_debug_init(VXGE_TRACE,
4672                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4673                 ll_config->device_hw_info.fw_version.version,
4674                 ll_config->device_hw_info.fw_date.date);
4675
4676         if (new_device) {
4677                 switch (ll_config->device_hw_info.function_mode) {
4678                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4679                         vxge_debug_init(VXGE_TRACE,
4680                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4681                 break;
4682                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4683                         vxge_debug_init(VXGE_TRACE,
4684                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4685                 break;
4686                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4687                         vxge_debug_init(VXGE_TRACE,
4688                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4689                 break;
4690                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4691                         vxge_debug_init(VXGE_TRACE,
4692                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4693                 break;
4694                 }
4695         }
4696
4697         vxge_print_parm(vdev, vpath_mask);
4698
4699         /* Store the fw version for ethttool option */
4700         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4701         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4702
4703         /* Copy the station mac address to the list */
4704         for (i = 0; i < vdev->no_of_vpath; i++) {
4705                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4706                 if (NULL == entry) {
4707                         vxge_debug_init(VXGE_ERR,
4708                                 "%s: mac_addr_list : memory allocation failed",
4709                                 vdev->ndev->name);
4710                         ret = -EPERM;
4711                         goto _exit6;
4712                 }
4713                 macaddr = (u8 *)&entry->macaddr;
4714                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4715                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4716                 vdev->vpaths[i].mac_addr_cnt = 1;
4717         }
4718
4719         kfree(device_config);
4720
4721         /*
4722          * INTA is shared in multi-function mode. This is unlike the INTA
4723          * implementation in MR mode, where each VH has its own INTA message.
4724          * - INTA is masked (disabled) as long as at least one function sets
4725          * its TITAN_MASK_ALL_INT.ALARM bit.
4726          * - INTA is unmasked (enabled) when all enabled functions have cleared
4727          * their own TITAN_MASK_ALL_INT.ALARM bit.
4728          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4729          * Though this driver leaves the top level interrupts unmasked while
4730          * leaving the required module interrupt bits masked on exit, there
4731          * could be a rougue driver around that does not follow this procedure
4732          * resulting in a failure to generate interrupts. The following code is
4733          * present to prevent such a failure.
4734          */
4735
4736         if (ll_config->device_hw_info.function_mode ==
4737                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4738                 if (vdev->config.intr_type == INTA)
4739                         vxge_hw_device_unmask_all(hldev);
4740
4741         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4742                 vdev->ndev->name, __func__, __LINE__);
4743
4744         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4745         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4746                 vxge_hw_device_trace_level_get(hldev));
4747
4748         kfree(ll_config);
4749         return 0;
4750
4751 _exit6:
4752         for (i = 0; i < vdev->no_of_vpath; i++)
4753                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4754 _exit5:
4755         vxge_device_unregister(hldev);
4756 _exit4:
4757         vxge_hw_device_terminate(hldev);
4758         pci_disable_sriov(pdev);
4759 _exit3:
4760         iounmap(attr.bar0);
4761 _exit2:
4762         pci_release_region(pdev, 0);
4763 _exit1:
4764         pci_disable_device(pdev);
4765 _exit0:
4766         kfree(ll_config);
4767         kfree(device_config);
4768         driver_config->config_dev_cnt--;
4769         driver_config->total_dev_cnt--;
4770         return ret;
4771 }
4772
4773 /**
4774  * vxge_rem_nic - Free the PCI device
4775  * @pdev: structure containing the PCI related information of the device.
4776  * Description: This function is called by the Pci subsystem to release a
4777  * PCI device and free up all resource held up by the device.
4778  */
4779 static void vxge_remove(struct pci_dev *pdev)
4780 {
4781         struct __vxge_hw_device *hldev;
4782         struct vxgedev *vdev;
4783         int i;
4784
4785         hldev = pci_get_drvdata(pdev);
4786         if (hldev == NULL)
4787                 return;
4788
4789         vdev = netdev_priv(hldev->ndev);
4790
4791         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4792         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4793                         __func__);
4794
4795         for (i = 0; i < vdev->no_of_vpath; i++)
4796                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4797
4798         vxge_device_unregister(hldev);
4799         /* Do not call pci_disable_sriov here, as it will break child devices */
4800         vxge_hw_device_terminate(hldev);
4801         iounmap(vdev->bar0);
4802         pci_release_region(pdev, 0);
4803         pci_disable_device(pdev);
4804         driver_config->config_dev_cnt--;
4805         driver_config->total_dev_cnt--;
4806
4807         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4808                         __func__, __LINE__);
4809         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4810                              __LINE__);
4811 }
4812
4813 static const struct pci_error_handlers vxge_err_handler = {
4814         .error_detected = vxge_io_error_detected,
4815         .slot_reset = vxge_io_slot_reset,
4816         .resume = vxge_io_resume,
4817 };
4818
4819 static struct pci_driver vxge_driver = {
4820         .name = VXGE_DRIVER_NAME,
4821         .id_table = vxge_id_table,
4822         .probe = vxge_probe,
4823         .remove = vxge_remove,
4824 #ifdef CONFIG_PM
4825         .suspend = vxge_pm_suspend,
4826         .resume = vxge_pm_resume,
4827 #endif
4828         .err_handler = &vxge_err_handler,
4829 };
4830
4831 static int __init
4832 vxge_starter(void)
4833 {
4834         int ret = 0;
4835
4836         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4837         pr_info("Driver version: %s\n", DRV_VERSION);
4838
4839         verify_bandwidth();
4840
4841         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4842         if (!driver_config)
4843                 return -ENOMEM;
4844
4845         ret = pci_register_driver(&vxge_driver);
4846         if (ret) {
4847                 kfree(driver_config);
4848                 goto err;
4849         }
4850
4851         if (driver_config->config_dev_cnt &&
4852            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4853                 vxge_debug_init(VXGE_ERR,
4854                         "%s: Configured %d of %d devices",
4855                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4856                         driver_config->total_dev_cnt);
4857 err:
4858         return ret;
4859 }
4860
4861 static void __exit
4862 vxge_closer(void)
4863 {
4864         pci_unregister_driver(&vxge_driver);
4865         kfree(driver_config);
4866 }
4867 module_init(vxge_starter);
4868 module_exit(vxge_closer);