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 const struct pci_device_id vxge_id_table[] = {
  67         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  68         PCI_ANY_ID},
  69         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  70         PCI_ANY_ID},
  71         {0}
  72 };
  73
  74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  75
  76 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  77 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  78 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  80 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  81 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  82
  83 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  84                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  85 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  86         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  87 module_param_array(bw_percentage, uint, NULL, 0);
  88
  89 static struct vxge_drv_config *driver_config;
  90 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
  91
  92 static inline int is_vxge_card_up(struct vxgedev *vdev)
  93 {
  94         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  95 }
  96
  97 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  98 {
  99         struct sk_buff **skb_ptr = NULL;
 100         struct sk_buff **temp;
 101 #define NR_SKB_COMPLETED 16
 102         struct sk_buff *completed[NR_SKB_COMPLETED];
 103         int more;
 104
 105         do {
 106                 more = 0;
 107                 skb_ptr = completed;
 108
 109                 if (__netif_tx_trylock(fifo->txq)) {
 110                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 111                                                 NR_SKB_COMPLETED, &more);
 112                         __netif_tx_unlock(fifo->txq);
 113                 }
 114
 115                 /* free SKBs */
 116                 for (temp = completed; temp != skb_ptr; temp++)
 117                         dev_consume_skb_irq(*temp);
 118         } while (more);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 122 {
 123         int i;
 124
 125         /* Complete all transmits */
 126         for (i = 0; i < vdev->no_of_vpath; i++)
 127                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 128 }
 129
 130 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 131 {
 132         int i;
 133         struct vxge_ring *ring;
 134
 135         /* Complete all receives*/
 136         for (i = 0; i < vdev->no_of_vpath; i++) {
 137                 ring = &vdev->vpaths[i].ring;
 138                 vxge_hw_vpath_poll_rx(ring->handle);
 139         }
 140 }
 141
 142 /*
 143  * vxge_callback_link_up
 144  *
 145  * This function is called during interrupt context to notify link up state
 146  * change.
 147  */
 148 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 149 {
 150         struct net_device *dev = hldev->ndev;
 151         struct vxgedev *vdev = netdev_priv(dev);
 152
 153         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 154                 vdev->ndev->name, __func__, __LINE__);
 155         netdev_notice(vdev->ndev, "Link Up\n");
 156         vdev->stats.link_up++;
 157
 158         netif_carrier_on(vdev->ndev);
 159         netif_tx_wake_all_queues(vdev->ndev);
 160
 161         vxge_debug_entryexit(VXGE_TRACE,
 162                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 163 }
 164
 165 /*
 166  * vxge_callback_link_down
 167  *
 168  * This function is called during interrupt context to notify link down state
 169  * change.
 170  */
 171 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 172 {
 173         struct net_device *dev = hldev->ndev;
 174         struct vxgedev *vdev = netdev_priv(dev);
 175
 176         vxge_debug_entryexit(VXGE_TRACE,
 177                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 178         netdev_notice(vdev->ndev, "Link Down\n");
 179
 180         vdev->stats.link_down++;
 181         netif_carrier_off(vdev->ndev);
 182         netif_tx_stop_all_queues(vdev->ndev);
 183
 184         vxge_debug_entryexit(VXGE_TRACE,
 185                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 186 }
 187
 188 /*
 189  * vxge_rx_alloc
 190  *
 191  * Allocate SKB.
 192  */
 193 static struct sk_buff *
 194 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 195 {
 196         struct net_device    *dev;
 197         struct sk_buff       *skb;
 198         struct vxge_rx_priv *rx_priv;
 199
 200         dev = ring->ndev;
 201         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 202                 ring->ndev->name, __func__, __LINE__);
 203
 204         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 205
 206         /* try to allocate skb first. this one may fail */
 207         skb = netdev_alloc_skb(dev, skb_size +
 208         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 209         if (skb == NULL) {
 210                 vxge_debug_mem(VXGE_ERR,
 211                         "%s: out of memory to allocate SKB", dev->name);
 212                 ring->stats.skb_alloc_fail++;
 213                 return NULL;
 214         }
 215
 216         vxge_debug_mem(VXGE_TRACE,
 217                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 218                 __func__, __LINE__, skb);
 219
 220         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 221
 222         rx_priv->skb = skb;
 223         rx_priv->skb_data = NULL;
 224         rx_priv->data_size = skb_size;
 225         vxge_debug_entryexit(VXGE_TRACE,
 226                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 227
 228         return skb;
 229 }
 230
 231 /*
 232  * vxge_rx_map
 233  */
 234 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 235 {
 236         struct vxge_rx_priv *rx_priv;
 237         dma_addr_t dma_addr;
 238
 239         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 240                 ring->ndev->name, __func__, __LINE__);
 241         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 242
 243         rx_priv->skb_data = rx_priv->skb->data;
 244         dma_addr = dma_map_single(&ring->pdev->dev, rx_priv->skb_data,
 245                                   rx_priv->data_size, DMA_FROM_DEVICE);
 246
 247         if (unlikely(dma_mapping_error(&ring->pdev->dev, dma_addr))) {
 248                 ring->stats.pci_map_fail++;
 249                 return -EIO;
 250         }
 251         vxge_debug_mem(VXGE_TRACE,
 252                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 253                 ring->ndev->name, __func__, __LINE__,
 254                 (unsigned long long)dma_addr);
 255         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 256
 257         rx_priv->data_dma = dma_addr;
 258         vxge_debug_entryexit(VXGE_TRACE,
 259                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * vxge_rx_initial_replenish
 266  * Allocation of RxD as an initial replenish procedure.
 267  */
 268 static enum vxge_hw_status
 269 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 270 {
 271         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 272         struct vxge_rx_priv *rx_priv;
 273
 274         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 275                 ring->ndev->name, __func__, __LINE__);
 276         if (vxge_rx_alloc(dtrh, ring,
 277                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 278                 return VXGE_HW_FAIL;
 279
 280         if (vxge_rx_map(dtrh, ring)) {
 281                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282                 dev_kfree_skb(rx_priv->skb);
 283
 284                 return VXGE_HW_FAIL;
 285         }
 286         vxge_debug_entryexit(VXGE_TRACE,
 287                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 288
 289         return VXGE_HW_OK;
 290 }
 291
 292 static inline void
 293 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 294                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 295 {
 296
 297         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 298                         ring->ndev->name, __func__, __LINE__);
 299         skb_record_rx_queue(skb, ring->driver_id);
 300         skb->protocol = eth_type_trans(skb, ring->ndev);
 301
 302         u64_stats_update_begin(&ring->stats.syncp);
 303         ring->stats.rx_frms++;
 304         ring->stats.rx_bytes += pkt_length;
 305
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ring->stats.rx_mcast++;
 308         u64_stats_update_end(&ring->stats.syncp);
 309
 310         vxge_debug_rx(VXGE_TRACE,
 311                 "%s: %s:%d  skb protocol = %d",
 312                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 313
 314         if (ext_info->vlan &&
 315             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 316                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 317         napi_gro_receive(ring->napi_p, skb);
 318
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321 }
 322
 323 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 324                                     struct vxge_rx_priv *rx_priv)
 325 {
 326         dma_sync_single_for_device(&ring->pdev->dev, rx_priv->data_dma,
 327                                    rx_priv->data_size, DMA_FROM_DEVICE);
 328
 329         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 330         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 331 }
 332
 333 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 334                              void *post_dtr, struct __vxge_hw_ring *ringh)
 335 {
 336         int dtr_count = *dtr_cnt;
 337         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 338                 if (*first_dtr)
 339                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 340                 *first_dtr = post_dtr;
 341         } else
 342                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 343         dtr_count++;
 344         *dtr_cnt = dtr_count;
 345 }
 346
 347 /*
 348  * vxge_rx_1b_compl
 349  *
 350  * If the interrupt is because of a received frame or if the receive ring
 351  * contains fresh as yet un-processed frames, this function is called.
 352  */
 353 static enum vxge_hw_status
 354 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 355                  u8 t_code, void *userdata)
 356 {
 357         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 358         struct net_device *dev = ring->ndev;
 359         unsigned int dma_sizes;
 360         void *first_dtr = NULL;
 361         int dtr_cnt = 0;
 362         int data_size;
 363         dma_addr_t data_dma;
 364         int pkt_length;
 365         struct sk_buff *skb;
 366         struct vxge_rx_priv *rx_priv;
 367         struct vxge_hw_ring_rxd_info ext_info;
 368         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 369                 ring->ndev->name, __func__, __LINE__);
 370
 371         if (ring->budget <= 0)
 372                 goto out;
 373
 374         do {
 375                 prefetch((char *)dtr + L1_CACHE_BYTES);
 376                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 377                 skb = rx_priv->skb;
 378                 data_size = rx_priv->data_size;
 379                 data_dma = rx_priv->data_dma;
 380                 prefetch(rx_priv->skb_data);
 381
 382                 vxge_debug_rx(VXGE_TRACE,
 383                         "%s: %s:%d  skb = 0x%p",
 384                         ring->ndev->name, __func__, __LINE__, skb);
 385
 386                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 387                 pkt_length = dma_sizes;
 388
 389                 pkt_length -= ETH_FCS_LEN;
 390
 391                 vxge_debug_rx(VXGE_TRACE,
 392                         "%s: %s:%d  Packet Length = %d",
 393                         ring->ndev->name, __func__, __LINE__, pkt_length);
 394
 395                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 396
 397                 /* check skb validity */
 398                 vxge_assert(skb);
 399
 400                 prefetch((char *)skb + L1_CACHE_BYTES);
 401                 if (unlikely(t_code)) {
 402                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 403                                 VXGE_HW_OK) {
 404
 405                                 ring->stats.rx_errors++;
 406                                 vxge_debug_rx(VXGE_TRACE,
 407                                         "%s: %s :%d Rx T_code is %d",
 408                                         ring->ndev->name, __func__,
 409                                         __LINE__, t_code);
 410
 411                                 /* If the t_code is not supported and if the
 412                                  * t_code is other than 0x5 (unparseable packet
 413                                  * such as unknown UPV6 header), Drop it !!!
 414                                  */
 415                                 vxge_re_pre_post(dtr, ring, rx_priv);
 416
 417                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 418                                 ring->stats.rx_dropped++;
 419                                 continue;
 420                         }
 421                 }
 422
 423                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 424                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 425                                 if (!vxge_rx_map(dtr, ring)) {
 426                                         skb_put(skb, pkt_length);
 427
 428                                         dma_unmap_single(&ring->pdev->dev,
 429                                                          data_dma, data_size,
 430                                                          DMA_FROM_DEVICE);
 431
 432                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 433                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 434                                                 ringh);
 435                                 } else {
 436                                         dev_kfree_skb(rx_priv->skb);
 437                                         rx_priv->skb = skb;
 438                                         rx_priv->data_size = data_size;
 439                                         vxge_re_pre_post(dtr, ring, rx_priv);
 440
 441                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 442                                                 ringh);
 443                                         ring->stats.rx_dropped++;
 444                                         break;
 445                                 }
 446                         } else {
 447                                 vxge_re_pre_post(dtr, ring, rx_priv);
 448
 449                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 450                                 ring->stats.rx_dropped++;
 451                                 break;
 452                         }
 453                 } else {
 454                         struct sk_buff *skb_up;
 455
 456                         skb_up = netdev_alloc_skb(dev, pkt_length +
 457                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 458                         if (skb_up != NULL) {
 459                                 skb_reserve(skb_up,
 460                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 461
 462                                 dma_sync_single_for_cpu(&ring->pdev->dev,
 463                                                         data_dma, data_size,
 464                                                         DMA_FROM_DEVICE);
 465
 466                                 vxge_debug_mem(VXGE_TRACE,
 467                                         "%s: %s:%d  skb_up = %p",
 468                                         ring->ndev->name, __func__,
 469                                         __LINE__, skb);
 470                                 memcpy(skb_up->data, skb->data, pkt_length);
 471
 472                                 vxge_re_pre_post(dtr, ring, rx_priv);
 473
 474                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 475                                         ringh);
 476                                 /* will netif_rx small SKB instead */
 477                                 skb = skb_up;
 478                                 skb_put(skb, pkt_length);
 479                         } else {
 480                                 vxge_re_pre_post(dtr, ring, rx_priv);
 481
 482                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 483                                 vxge_debug_rx(VXGE_ERR,
 484                                         "%s: vxge_rx_1b_compl: out of "
 485                                         "memory", dev->name);
 486                                 ring->stats.skb_alloc_fail++;
 487                                 break;
 488                         }
 489                 }
 490
 491                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 492                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 493                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 494                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 495                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 496                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 497                 else
 498                         skb_checksum_none_assert(skb);
 499
 500
 501                 if (ring->rx_hwts) {
 502                         struct skb_shared_hwtstamps *skb_hwts;
 503                         u32 ns = *(u32 *)(skb->head + pkt_length);
 504
 505                         skb_hwts = skb_hwtstamps(skb);
 506                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 507                 }
 508
 509                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 510                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 511                  * if rss is disabled/enabled, so key off of that.
 512                  */
 513                 if (ext_info.rth_value)
 514                         skb_set_hash(skb, ext_info.rth_value,
 515                                      PKT_HASH_TYPE_L3);
 516
 517                 vxge_rx_complete(ring, skb, ext_info.vlan,
 518                         pkt_length, &ext_info);
 519
 520                 ring->budget--;
 521                 ring->pkts_processed++;
 522                 if (!ring->budget)
 523                         break;
 524
 525         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 526                 &t_code) == VXGE_HW_OK);
 527
 528         if (first_dtr)
 529                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 530
 531 out:
 532         vxge_debug_entryexit(VXGE_TRACE,
 533                                 "%s:%d  Exiting...",
 534                                 __func__, __LINE__);
 535         return VXGE_HW_OK;
 536 }
 537
 538 /*
 539  * vxge_xmit_compl
 540  *
 541  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 542  * this function is called. It identifies the last TxD whose buffer was
 543  * freed and frees all skbs whose data have already DMA'ed into the NICs
 544  * internal memory.
 545  */
 546 static enum vxge_hw_status
 547 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 548                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 549                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 550 {
 551         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 552         struct sk_buff *skb, **done_skb = *skb_ptr;
 553         int pkt_cnt = 0;
 554
 555         vxge_debug_entryexit(VXGE_TRACE,
 556                 "%s:%d Entered....", __func__, __LINE__);
 557
 558         do {
 559                 int frg_cnt;
 560                 skb_frag_t *frag;
 561                 int i = 0, j;
 562                 struct vxge_tx_priv *txd_priv =
 563                         vxge_hw_fifo_txdl_private_get(dtr);
 564
 565                 skb = txd_priv->skb;
 566                 frg_cnt = skb_shinfo(skb)->nr_frags;
 567                 frag = &skb_shinfo(skb)->frags[0];
 568
 569                 vxge_debug_tx(VXGE_TRACE,
 570                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 571                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 572                                 __LINE__, fifo_hw, dtr, t_code);
 573                 /* check skb validity */
 574                 vxge_assert(skb);
 575                 vxge_debug_tx(VXGE_TRACE,
 576                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 577                         fifo->ndev->name, __func__, __LINE__,
 578                         skb, txd_priv, frg_cnt);
 579                 if (unlikely(t_code)) {
 580                         fifo->stats.tx_errors++;
 581                         vxge_debug_tx(VXGE_ERR,
 582                                 "%s: tx: dtr %p completed due to "
 583                                 "error t_code %01x", fifo->ndev->name,
 584                                 dtr, t_code);
 585                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 586                 }
 587
 588                 /*  for unfragmented skb */
 589                 dma_unmap_single(&fifo->pdev->dev, txd_priv->dma_buffers[i++],
 590                                  skb_headlen(skb), DMA_TO_DEVICE);
 591
 592                 for (j = 0; j < frg_cnt; j++) {
 593                         dma_unmap_page(&fifo->pdev->dev,
 594                                        txd_priv->dma_buffers[i++],
 595                                        skb_frag_size(frag), DMA_TO_DEVICE);
 596                         frag += 1;
 597                 }
 598
 599                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 600
 601                 /* Updating the statistics block */
 602                 u64_stats_update_begin(&fifo->stats.syncp);
 603                 fifo->stats.tx_frms++;
 604                 fifo->stats.tx_bytes += skb->len;
 605                 u64_stats_update_end(&fifo->stats.syncp);
 606
 607                 *done_skb++ = skb;
 608
 609                 if (--nr_skb <= 0) {
 610                         *more = 1;
 611                         break;
 612                 }
 613
 614                 pkt_cnt++;
 615                 if (pkt_cnt > fifo->indicate_max_pkts)
 616                         break;
 617
 618         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 619                                 &dtr, &t_code) == VXGE_HW_OK);
 620
 621         *skb_ptr = done_skb;
 622         if (netif_tx_queue_stopped(fifo->txq))
 623                 netif_tx_wake_queue(fifo->txq);
 624
 625         vxge_debug_entryexit(VXGE_TRACE,
 626                                 "%s: %s:%d  Exiting...",
 627                                 fifo->ndev->name, __func__, __LINE__);
 628         return VXGE_HW_OK;
 629 }
 630
 631 /* select a vpath to transmit the packet */
 632 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 633 {
 634         u16 queue_len, counter = 0;
 635         if (skb->protocol == htons(ETH_P_IP)) {
 636                 struct iphdr *ip;
 637                 struct tcphdr *th;
 638
 639                 ip = ip_hdr(skb);
 640
 641                 if (!ip_is_fragment(ip)) {
 642                         th = (struct tcphdr *)(((unsigned char *)ip) +
 643                                         ip->ihl*4);
 644
 645                         queue_len = vdev->no_of_vpath;
 646                         counter = (ntohs(th->source) +
 647                                 ntohs(th->dest)) &
 648                                 vdev->vpath_selector[queue_len - 1];
 649                         if (counter >= queue_len)
 650                                 counter = queue_len - 1;
 651                 }
 652         }
 653         return counter;
 654 }
 655
 656 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 657         struct vxge_vpath *vpath, u64 del_mac)
 658 {
 659         struct list_head *entry, *next;
 660         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 661                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 662                         return TRUE;
 663         }
 664         return FALSE;
 665 }
 666
 667 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 668 {
 669         struct vxge_mac_addrs *new_mac_entry;
 670         u8 *mac_address = NULL;
 671
 672         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 673                 return TRUE;
 674
 675         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 676         if (!new_mac_entry) {
 677                 vxge_debug_mem(VXGE_ERR,
 678                         "%s: memory allocation failed",
 679                         VXGE_DRIVER_NAME);
 680                 return FALSE;
 681         }
 682
 683         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 684
 685         /* Copy the new mac address to the list */
 686         mac_address = (u8 *)&new_mac_entry->macaddr;
 687         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 688
 689         new_mac_entry->state = mac->state;
 690         vpath->mac_addr_cnt++;
 691
 692         if (is_multicast_ether_addr(mac->macaddr))
 693                 vpath->mcast_addr_cnt++;
 694
 695         return TRUE;
 696 }
 697
 698 /* Add a mac address to DA table */
 699 static enum vxge_hw_status
 700 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 701 {
 702         enum vxge_hw_status status = VXGE_HW_OK;
 703         struct vxge_vpath *vpath;
 704         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 705
 706         if (is_multicast_ether_addr(mac->macaddr))
 707                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 708         else
 709                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 710
 711         vpath = &vdev->vpaths[mac->vpath_no];
 712         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 713                                                 mac->macmask, duplicate_mode);
 714         if (status != VXGE_HW_OK) {
 715                 vxge_debug_init(VXGE_ERR,
 716                         "DA config add entry failed for vpath:%d",
 717                         vpath->device_id);
 718         } else
 719                 if (FALSE == vxge_mac_list_add(vpath, mac))
 720                         status = -EPERM;
 721
 722         return status;
 723 }
 724
 725 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 726 {
 727         struct macInfo mac_info;
 728         u8 *mac_address = NULL;
 729         u64 mac_addr = 0, vpath_vector = 0;
 730         int vpath_idx = 0;
 731         enum vxge_hw_status status = VXGE_HW_OK;
 732         struct vxge_vpath *vpath = NULL;
 733
 734         mac_address = (u8 *)&mac_addr;
 735         memcpy(mac_address, mac_header, ETH_ALEN);
 736
 737         /* Is this mac address already in the list? */
 738         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 739                 vpath = &vdev->vpaths[vpath_idx];
 740                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 741                         return vpath_idx;
 742         }
 743
 744         memset(&mac_info, 0, sizeof(struct macInfo));
 745         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 746
 747         /* Any vpath has room to add mac address to its da table? */
 748         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 749                 vpath = &vdev->vpaths[vpath_idx];
 750                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 751                         /* Add this mac address to this vpath */
 752                         mac_info.vpath_no = vpath_idx;
 753                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 754                         status = vxge_add_mac_addr(vdev, &mac_info);
 755                         if (status != VXGE_HW_OK)
 756                                 return -EPERM;
 757                         return vpath_idx;
 758                 }
 759         }
 760
 761         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 762         vpath_idx = 0;
 763         mac_info.vpath_no = vpath_idx;
 764         /* Is the first vpath already selected as catch-basin ? */
 765         vpath = &vdev->vpaths[vpath_idx];
 766         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 767                 /* Add this mac address to this vpath */
 768                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 769                         return -EPERM;
 770                 return vpath_idx;
 771         }
 772
 773         /* Select first vpath as catch-basin */
 774         vpath_vector = vxge_mBIT(vpath->device_id);
 775         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 776                                 vxge_hw_mgmt_reg_type_mrpcim,
 777                                 0,
 778                                 (ulong)offsetof(
 779                                         struct vxge_hw_mrpcim_reg,
 780                                         rts_mgr_cbasin_cfg),
 781                                 vpath_vector);
 782         if (status != VXGE_HW_OK) {
 783                 vxge_debug_tx(VXGE_ERR,
 784                         "%s: Unable to set the vpath-%d in catch-basin mode",
 785                         VXGE_DRIVER_NAME, vpath->device_id);
 786                 return -EPERM;
 787         }
 788
 789         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 790                 return -EPERM;
 791
 792         return vpath_idx;
 793 }
 794
 795 /**
 796  * vxge_xmit
 797  * @skb : the socket buffer containing the Tx data.
 798  * @dev : device pointer.
 799  *
 800  * This function is the Tx entry point of the driver. Neterion NIC supports
 801  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 802 */
 803 static netdev_tx_t
 804 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 805 {
 806         struct vxge_fifo *fifo = NULL;
 807         void *dtr_priv;
 808         void *dtr = NULL;
 809         struct vxgedev *vdev = NULL;
 810         enum vxge_hw_status status;
 811         int frg_cnt, first_frg_len;
 812         skb_frag_t *frag;
 813         int i = 0, j = 0, avail;
 814         u64 dma_pointer;
 815         struct vxge_tx_priv *txdl_priv = NULL;
 816         struct __vxge_hw_fifo *fifo_hw;
 817         int offload_type;
 818         int vpath_no = 0;
 819
 820         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 821                         dev->name, __func__, __LINE__);
 822
 823         /* A buffer with no data will be dropped */
 824         if (unlikely(skb->len <= 0)) {
 825                 vxge_debug_tx(VXGE_ERR,
 826                         "%s: Buffer has no data..", dev->name);
 827                 dev_kfree_skb_any(skb);
 828                 return NETDEV_TX_OK;
 829         }
 830
 831         vdev = netdev_priv(dev);
 832
 833         if (unlikely(!is_vxge_card_up(vdev))) {
 834                 vxge_debug_tx(VXGE_ERR,
 835                         "%s: vdev not initialized", dev->name);
 836                 dev_kfree_skb_any(skb);
 837                 return NETDEV_TX_OK;
 838         }
 839
 840         if (vdev->config.addr_learn_en) {
 841                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 842                 if (vpath_no == -EPERM) {
 843                         vxge_debug_tx(VXGE_ERR,
 844                                 "%s: Failed to store the mac address",
 845                                 dev->name);
 846                         dev_kfree_skb_any(skb);
 847                         return NETDEV_TX_OK;
 848                 }
 849         }
 850
 851         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 852                 vpath_no = skb_get_queue_mapping(skb);
 853         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 854                 vpath_no = vxge_get_vpath_no(vdev, skb);
 855
 856         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 857
 858         if (vpath_no >= vdev->no_of_vpath)
 859                 vpath_no = 0;
 860
 861         fifo = &vdev->vpaths[vpath_no].fifo;
 862         fifo_hw = fifo->handle;
 863
 864         if (netif_tx_queue_stopped(fifo->txq))
 865                 return NETDEV_TX_BUSY;
 866
 867         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 868         if (avail == 0) {
 869                 vxge_debug_tx(VXGE_ERR,
 870                         "%s: No free TXDs available", dev->name);
 871                 fifo->stats.txd_not_free++;
 872                 goto _exit0;
 873         }
 874
 875         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 876          * completion will resume the queue.
 877          */
 878         if (avail == 1)
 879                 netif_tx_stop_queue(fifo->txq);
 880
 881         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 882         if (unlikely(status != VXGE_HW_OK)) {
 883                 vxge_debug_tx(VXGE_ERR,
 884                    "%s: Out of descriptors .", dev->name);
 885                 fifo->stats.txd_out_of_desc++;
 886                 goto _exit0;
 887         }
 888
 889         vxge_debug_tx(VXGE_TRACE,
 890                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 891                 dev->name, __func__, __LINE__,
 892                 fifo_hw, dtr, dtr_priv);
 893
 894         if (skb_vlan_tag_present(skb)) {
 895                 u16 vlan_tag = skb_vlan_tag_get(skb);
 896                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 897         }
 898
 899         first_frg_len = skb_headlen(skb);
 900
 901         dma_pointer = dma_map_single(&fifo->pdev->dev, skb->data,
 902                                      first_frg_len, DMA_TO_DEVICE);
 903
 904         if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer))) {
 905                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 906                 fifo->stats.pci_map_fail++;
 907                 goto _exit0;
 908         }
 909
 910         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 911         txdl_priv->skb = skb;
 912         txdl_priv->dma_buffers[j] = dma_pointer;
 913
 914         frg_cnt = skb_shinfo(skb)->nr_frags;
 915         vxge_debug_tx(VXGE_TRACE,
 916                         "%s: %s:%d skb = %p txdl_priv = %p "
 917                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 918                         __func__, __LINE__, skb, txdl_priv,
 919                         frg_cnt, (unsigned long long)dma_pointer);
 920
 921         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 922                 first_frg_len);
 923
 924         frag = &skb_shinfo(skb)->frags[0];
 925         for (i = 0; i < frg_cnt; i++) {
 926                 /* ignore 0 length fragment */
 927                 if (!skb_frag_size(frag))
 928                         continue;
 929
 930                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 931                                                     0, skb_frag_size(frag),
 932                                                     DMA_TO_DEVICE);
 933
 934                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 935                         goto _exit2;
 936                 vxge_debug_tx(VXGE_TRACE,
 937                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 938                                 dev->name, __func__, __LINE__, i,
 939                                 (unsigned long long)dma_pointer);
 940
 941                 txdl_priv->dma_buffers[j] = dma_pointer;
 942                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 943                                         skb_frag_size(frag));
 944                 frag += 1;
 945         }
 946
 947         offload_type = vxge_offload_type(skb);
 948
 949         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 950                 int mss = vxge_tcp_mss(skb);
 951                 if (mss) {
 952                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 953                                 dev->name, __func__, __LINE__, mss);
 954                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 955                 } else {
 956                         vxge_assert(skb->len <=
 957                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 958                         vxge_assert(0);
 959                         goto _exit1;
 960                 }
 961         }
 962
 963         if (skb->ip_summed == CHECKSUM_PARTIAL)
 964                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 965                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 966                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 967                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 968
 969         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 970
 971         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 972                 dev->name, __func__, __LINE__);
 973         return NETDEV_TX_OK;
 974
 975 _exit2:
 976         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 977 _exit1:
 978         j = 0;
 979         frag = &skb_shinfo(skb)->frags[0];
 980
 981         dma_unmap_single(&fifo->pdev->dev, txdl_priv->dma_buffers[j++],
 982                          skb_headlen(skb), DMA_TO_DEVICE);
 983
 984         for (; j < i; j++) {
 985                 dma_unmap_page(&fifo->pdev->dev, txdl_priv->dma_buffers[j],
 986                                skb_frag_size(frag), DMA_TO_DEVICE);
 987                 frag += 1;
 988         }
 989
 990         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 991 _exit0:
 992         netif_tx_stop_queue(fifo->txq);
 993         dev_kfree_skb_any(skb);
 994
 995         return NETDEV_TX_OK;
 996 }
 997
 998 /*
 999  * vxge_rx_term
1000  *
1001  * Function will be called by hw function to abort all outstanding receive
1002  * descriptors.
1003  */
1004 static void
1005 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1006 {
1007         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1008         struct vxge_rx_priv *rx_priv =
1009                 vxge_hw_ring_rxd_private_get(dtrh);
1010
1011         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1012                         ring->ndev->name, __func__, __LINE__);
1013         if (state != VXGE_HW_RXD_STATE_POSTED)
1014                 return;
1015
1016         dma_unmap_single(&ring->pdev->dev, rx_priv->data_dma,
1017                          rx_priv->data_size, DMA_FROM_DEVICE);
1018
1019         dev_kfree_skb(rx_priv->skb);
1020         rx_priv->skb_data = NULL;
1021
1022         vxge_debug_entryexit(VXGE_TRACE,
1023                 "%s: %s:%d  Exiting...",
1024                 ring->ndev->name, __func__, __LINE__);
1025 }
1026
1027 /*
1028  * vxge_tx_term
1029  *
1030  * Function will be called to abort all outstanding tx descriptors
1031  */
1032 static void
1033 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1034 {
1035         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1036         skb_frag_t *frag;
1037         int i = 0, j, frg_cnt;
1038         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1039         struct sk_buff *skb = txd_priv->skb;
1040
1041         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1042
1043         if (state != VXGE_HW_TXDL_STATE_POSTED)
1044                 return;
1045
1046         /* check skb validity */
1047         vxge_assert(skb);
1048         frg_cnt = skb_shinfo(skb)->nr_frags;
1049         frag = &skb_shinfo(skb)->frags[0];
1050
1051         /*  for unfragmented skb */
1052         dma_unmap_single(&fifo->pdev->dev, txd_priv->dma_buffers[i++],
1053                          skb_headlen(skb), DMA_TO_DEVICE);
1054
1055         for (j = 0; j < frg_cnt; j++) {
1056                 dma_unmap_page(&fifo->pdev->dev, txd_priv->dma_buffers[i++],
1057                                skb_frag_size(frag), DMA_TO_DEVICE);
1058                 frag += 1;
1059         }
1060
1061         dev_kfree_skb(skb);
1062
1063         vxge_debug_entryexit(VXGE_TRACE,
1064                 "%s:%d  Exiting...", __func__, __LINE__);
1065 }
1066
1067 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1068 {
1069         struct list_head *entry, *next;
1070         u64 del_mac = 0;
1071         u8 *mac_address = (u8 *) (&del_mac);
1072
1073         /* Copy the mac address to delete from the list */
1074         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1075
1076         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1077                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1078                         list_del(entry);
1079                         kfree(entry);
1080                         vpath->mac_addr_cnt--;
1081
1082                         if (is_multicast_ether_addr(mac->macaddr))
1083                                 vpath->mcast_addr_cnt--;
1084                         return TRUE;
1085                 }
1086         }
1087
1088         return FALSE;
1089 }
1090
1091 /* delete a mac address from DA table */
1092 static enum vxge_hw_status
1093 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1094 {
1095         enum vxge_hw_status status = VXGE_HW_OK;
1096         struct vxge_vpath *vpath;
1097
1098         vpath = &vdev->vpaths[mac->vpath_no];
1099         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1100                                                 mac->macmask);
1101         if (status != VXGE_HW_OK) {
1102                 vxge_debug_init(VXGE_ERR,
1103                         "DA config delete entry failed for vpath:%d",
1104                         vpath->device_id);
1105         } else
1106                 vxge_mac_list_del(vpath, mac);
1107         return status;
1108 }
1109
1110 /**
1111  * vxge_set_multicast
1112  * @dev: pointer to the device structure
1113  *
1114  * Entry point for multicast address enable/disable
1115  * This function is a driver entry point which gets called by the kernel
1116  * whenever multicast addresses must be enabled/disabled. This also gets
1117  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1118  * determine, if multicast address must be enabled or if promiscuous mode
1119  * is to be disabled etc.
1120  */
1121 static void vxge_set_multicast(struct net_device *dev)
1122 {
1123         struct netdev_hw_addr *ha;
1124         struct vxgedev *vdev;
1125         int i, mcast_cnt = 0;
1126         struct vxge_vpath *vpath;
1127         enum vxge_hw_status status = VXGE_HW_OK;
1128         struct macInfo mac_info;
1129         int vpath_idx = 0;
1130         struct vxge_mac_addrs *mac_entry;
1131         struct list_head *list_head;
1132         struct list_head *entry, *next;
1133         u8 *mac_address = NULL;
1134
1135         vxge_debug_entryexit(VXGE_TRACE,
1136                 "%s:%d", __func__, __LINE__);
1137
1138         vdev = netdev_priv(dev);
1139
1140         if (unlikely(!is_vxge_card_up(vdev)))
1141                 return;
1142
1143         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1144                 for (i = 0; i < vdev->no_of_vpath; i++) {
1145                         vpath = &vdev->vpaths[i];
1146                         vxge_assert(vpath->is_open);
1147                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1148                         if (status != VXGE_HW_OK)
1149                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1150                                                 "multicast, status %d", status);
1151                         vdev->all_multi_flg = 1;
1152                 }
1153         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1154                 for (i = 0; i < vdev->no_of_vpath; i++) {
1155                         vpath = &vdev->vpaths[i];
1156                         vxge_assert(vpath->is_open);
1157                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1158                         if (status != VXGE_HW_OK)
1159                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1160                                                 "multicast, status %d", status);
1161                         vdev->all_multi_flg = 0;
1162                 }
1163         }
1164
1165
1166         if (!vdev->config.addr_learn_en) {
1167                 for (i = 0; i < vdev->no_of_vpath; i++) {
1168                         vpath = &vdev->vpaths[i];
1169                         vxge_assert(vpath->is_open);
1170
1171                         if (dev->flags & IFF_PROMISC)
1172                                 status = vxge_hw_vpath_promisc_enable(
1173                                         vpath->handle);
1174                         else
1175                                 status = vxge_hw_vpath_promisc_disable(
1176                                         vpath->handle);
1177                         if (status != VXGE_HW_OK)
1178                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1179                                         ", status %d", dev->flags&IFF_PROMISC ?
1180                                         "enable" : "disable", status);
1181                 }
1182         }
1183
1184         memset(&mac_info, 0, sizeof(struct macInfo));
1185         /* Update individual M_CAST address list */
1186         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1187                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1188                 list_head = &vdev->vpaths[0].mac_addr_list;
1189                 if ((netdev_mc_count(dev) +
1190                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1191                                 vdev->vpaths[0].max_mac_addr_cnt)
1192                         goto _set_all_mcast;
1193
1194                 /* Delete previous MC's */
1195                 for (i = 0; i < mcast_cnt; i++) {
1196                         list_for_each_safe(entry, next, list_head) {
1197                                 mac_entry = (struct vxge_mac_addrs *)entry;
1198                                 /* Copy the mac address to delete */
1199                                 mac_address = (u8 *)&mac_entry->macaddr;
1200                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1201
1202                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1203                                         for (vpath_idx = 0; vpath_idx <
1204                                                 vdev->no_of_vpath;
1205                                                 vpath_idx++) {
1206                                                 mac_info.vpath_no = vpath_idx;
1207                                                 status = vxge_del_mac_addr(
1208                                                                 vdev,
1209                                                                 &mac_info);
1210                                         }
1211                                 }
1212                         }
1213                 }
1214
1215                 /* Add new ones */
1216                 netdev_for_each_mc_addr(ha, dev) {
1217                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1218                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1219                                         vpath_idx++) {
1220                                 mac_info.vpath_no = vpath_idx;
1221                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1222                                 status = vxge_add_mac_addr(vdev, &mac_info);
1223                                 if (status != VXGE_HW_OK) {
1224                                         vxge_debug_init(VXGE_ERR,
1225                                                 "%s:%d Setting individual"
1226                                                 "multicast address failed",
1227                                                 __func__, __LINE__);
1228                                         goto _set_all_mcast;
1229                                 }
1230                         }
1231                 }
1232
1233                 return;
1234 _set_all_mcast:
1235                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1236                 /* Delete previous MC's */
1237                 for (i = 0; i < mcast_cnt; i++) {
1238                         list_for_each_safe(entry, next, list_head) {
1239                                 mac_entry = (struct vxge_mac_addrs *)entry;
1240                                 /* Copy the mac address to delete */
1241                                 mac_address = (u8 *)&mac_entry->macaddr;
1242                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1243
1244                                 if (is_multicast_ether_addr(mac_info.macaddr))
1245                                         break;
1246                         }
1247
1248                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1249                                         vpath_idx++) {
1250                                 mac_info.vpath_no = vpath_idx;
1251                                 status = vxge_del_mac_addr(vdev, &mac_info);
1252                         }
1253                 }
1254
1255                 /* Enable all multicast */
1256                 for (i = 0; i < vdev->no_of_vpath; i++) {
1257                         vpath = &vdev->vpaths[i];
1258                         vxge_assert(vpath->is_open);
1259
1260                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1261                         if (status != VXGE_HW_OK) {
1262                                 vxge_debug_init(VXGE_ERR,
1263                                         "%s:%d Enabling all multicasts failed",
1264                                          __func__, __LINE__);
1265                         }
1266                         vdev->all_multi_flg = 1;
1267                 }
1268                 dev->flags |= IFF_ALLMULTI;
1269         }
1270
1271         vxge_debug_entryexit(VXGE_TRACE,
1272                 "%s:%d  Exiting...", __func__, __LINE__);
1273 }
1274
1275 /**
1276  * vxge_set_mac_addr
1277  * @dev: pointer to the device structure
1278  * @p: socket info
1279  *
1280  * Update entry "0" (default MAC addr)
1281  */
1282 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1283 {
1284         struct sockaddr *addr = p;
1285         struct vxgedev *vdev;
1286         enum vxge_hw_status status = VXGE_HW_OK;
1287         struct macInfo mac_info_new, mac_info_old;
1288         int vpath_idx = 0;
1289
1290         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1291
1292         vdev = netdev_priv(dev);
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 (!ether_addr_equal(mac->macaddr, macaddr)) {
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  * @napi: pointer to the napi 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 (pkts_processed < budget_org) {
1825                 napi_complete_done(napi, pkts_processed);
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         }
1832
1833         /* We are copying and returning the local variable, in case if after
1834          * clearing the msix interrupt above, if the interrupt fires right
1835          * away which can preempt this NAPI thread */
1836         return pkts_processed;
1837 }
1838
1839 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1840 {
1841         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1842         int pkts_processed = 0;
1843         int i;
1844         int budget_org = budget;
1845         struct vxge_ring *ring;
1846
1847         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1848
1849         for (i = 0; i < vdev->no_of_vpath; i++) {
1850                 ring = &vdev->vpaths[i].ring;
1851                 ring->budget = budget;
1852                 ring->pkts_processed = 0;
1853                 vxge_hw_vpath_poll_rx(ring->handle);
1854                 pkts_processed += ring->pkts_processed;
1855                 budget -= ring->pkts_processed;
1856                 if (budget <= 0)
1857                         break;
1858         }
1859
1860         VXGE_COMPLETE_ALL_TX(vdev);
1861
1862         if (pkts_processed < budget_org) {
1863                 napi_complete_done(napi, pkts_processed);
1864                 /* Re enable the Rx interrupts for the ring */
1865                 vxge_hw_device_unmask_all(hldev);
1866                 vxge_hw_device_flush_io(hldev);
1867         }
1868
1869         return pkts_processed;
1870 }
1871
1872 #ifdef CONFIG_NET_POLL_CONTROLLER
1873 /**
1874  * vxge_netpoll - netpoll event handler entry point
1875  * @dev : pointer to the device structure.
1876  * Description:
1877  *      This function will be called by upper layer to check for events on the
1878  * interface in situations where interrupts are disabled. It is used for
1879  * specific in-kernel networking tasks, such as remote consoles and kernel
1880  * debugging over the network (example netdump in RedHat).
1881  */
1882 static void vxge_netpoll(struct net_device *dev)
1883 {
1884         struct vxgedev *vdev = netdev_priv(dev);
1885         struct pci_dev *pdev = vdev->pdev;
1886         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1887         const int irq = pdev->irq;
1888
1889         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1890
1891         if (pci_channel_offline(pdev))
1892                 return;
1893
1894         disable_irq(irq);
1895         vxge_hw_device_clear_tx_rx(hldev);
1896
1897         vxge_hw_device_clear_tx_rx(hldev);
1898         VXGE_COMPLETE_ALL_RX(vdev);
1899         VXGE_COMPLETE_ALL_TX(vdev);
1900
1901         enable_irq(irq);
1902
1903         vxge_debug_entryexit(VXGE_TRACE,
1904                 "%s:%d  Exiting...", __func__, __LINE__);
1905 }
1906 #endif
1907
1908 /* RTH configuration */
1909 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1910 {
1911         enum vxge_hw_status status = VXGE_HW_OK;
1912         struct vxge_hw_rth_hash_types hash_types;
1913         u8 itable[256] = {0}; /* indirection table */
1914         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1915         int index;
1916
1917         /*
1918          * Filling
1919          *      - itable with bucket numbers
1920          *      - mtable with bucket-to-vpath mapping
1921          */
1922         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1923                 itable[index] = index;
1924                 mtable[index] = index % vdev->no_of_vpath;
1925         }
1926
1927         /* set indirection table, bucket-to-vpath mapping */
1928         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1929                                                 vdev->no_of_vpath,
1930                                                 mtable, itable,
1931                                                 vdev->config.rth_bkt_sz);
1932         if (status != VXGE_HW_OK) {
1933                 vxge_debug_init(VXGE_ERR,
1934                         "RTH indirection table configuration failed "
1935                         "for vpath:%d", vdev->vpaths[0].device_id);
1936                 return status;
1937         }
1938
1939         /* Fill RTH hash types */
1940         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1941         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1942         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1943         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1944         hash_types.hash_type_tcpipv6ex_en =
1945                                         vdev->config.rth_hash_type_tcpipv6ex;
1946         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1947
1948         /*
1949          * Because the itable_set() method uses the active_table field
1950          * for the target virtual path the RTH config should be updated
1951          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1952          * when steering frames.
1953          */
1954         for (index = 0; index < vdev->no_of_vpath; index++) {
1955                 status = vxge_hw_vpath_rts_rth_set(
1956                                 vdev->vpaths[index].handle,
1957                                 vdev->config.rth_algorithm,
1958                                 &hash_types,
1959                                 vdev->config.rth_bkt_sz);
1960                 if (status != VXGE_HW_OK) {
1961                         vxge_debug_init(VXGE_ERR,
1962                                 "RTH configuration failed for vpath:%d",
1963                                 vdev->vpaths[index].device_id);
1964                         return status;
1965                 }
1966         }
1967
1968         return status;
1969 }
1970
1971 /* reset vpaths */
1972 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1973 {
1974         enum vxge_hw_status status = VXGE_HW_OK;
1975         struct vxge_vpath *vpath;
1976         int i;
1977
1978         for (i = 0; i < vdev->no_of_vpath; i++) {
1979                 vpath = &vdev->vpaths[i];
1980                 if (vpath->handle) {
1981                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1982                                 if (is_vxge_card_up(vdev) &&
1983                                         vxge_hw_vpath_recover_from_reset(
1984                                                 vpath->handle) != VXGE_HW_OK) {
1985                                         vxge_debug_init(VXGE_ERR,
1986                                                 "vxge_hw_vpath_recover_"
1987                                                 "from_reset failed for vpath: "
1988                                                 "%d", i);
1989                                         return status;
1990                                 }
1991                         } else {
1992                                 vxge_debug_init(VXGE_ERR,
1993                                         "vxge_hw_vpath_reset failed for "
1994                                         "vpath:%d", i);
1995                                 return status;
1996                         }
1997                 }
1998         }
1999
2000         return status;
2001 }
2002
2003 /* close vpaths */
2004 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2005 {
2006         struct vxge_vpath *vpath;
2007         int i;
2008
2009         for (i = index; i < vdev->no_of_vpath; i++) {
2010                 vpath = &vdev->vpaths[i];
2011
2012                 if (vpath->handle && vpath->is_open) {
2013                         vxge_hw_vpath_close(vpath->handle);
2014                         vdev->stats.vpaths_open--;
2015                 }
2016                 vpath->is_open = 0;
2017                 vpath->handle = NULL;
2018         }
2019 }
2020
2021 /* open vpaths */
2022 static int vxge_open_vpaths(struct vxgedev *vdev)
2023 {
2024         struct vxge_hw_vpath_attr attr;
2025         enum vxge_hw_status status;
2026         struct vxge_vpath *vpath;
2027         u32 vp_id = 0;
2028         int i;
2029
2030         for (i = 0; i < vdev->no_of_vpath; i++) {
2031                 vpath = &vdev->vpaths[i];
2032                 vxge_assert(vpath->is_configured);
2033
2034                 if (!vdev->titan1) {
2035                         struct vxge_hw_vp_config *vcfg;
2036                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2037
2038                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2039                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2040                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2041                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2042                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2043                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2044                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2045                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2046                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2047                 }
2048
2049                 attr.vp_id = vpath->device_id;
2050                 attr.fifo_attr.callback = vxge_xmit_compl;
2051                 attr.fifo_attr.txdl_term = vxge_tx_term;
2052                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2053                 attr.fifo_attr.userdata = &vpath->fifo;
2054
2055                 attr.ring_attr.callback = vxge_rx_1b_compl;
2056                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2057                 attr.ring_attr.rxd_term = vxge_rx_term;
2058                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2059                 attr.ring_attr.userdata = &vpath->ring;
2060
2061                 vpath->ring.ndev = vdev->ndev;
2062                 vpath->ring.pdev = vdev->pdev;
2063
2064                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2065                 if (status == VXGE_HW_OK) {
2066                         vpath->fifo.handle =
2067                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2068                         vpath->ring.handle =
2069                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2070                         vpath->fifo.tx_steering_type =
2071                                 vdev->config.tx_steering_type;
2072                         vpath->fifo.ndev = vdev->ndev;
2073                         vpath->fifo.pdev = vdev->pdev;
2074
2075                         u64_stats_init(&vpath->fifo.stats.syncp);
2076                         u64_stats_init(&vpath->ring.stats.syncp);
2077
2078                         if (vdev->config.tx_steering_type)
2079                                 vpath->fifo.txq =
2080                                         netdev_get_tx_queue(vdev->ndev, i);
2081                         else
2082                                 vpath->fifo.txq =
2083                                         netdev_get_tx_queue(vdev->ndev, 0);
2084                         vpath->fifo.indicate_max_pkts =
2085                                 vdev->config.fifo_indicate_max_pkts;
2086                         vpath->fifo.tx_vector_no = 0;
2087                         vpath->ring.rx_vector_no = 0;
2088                         vpath->ring.rx_hwts = vdev->rx_hwts;
2089                         vpath->is_open = 1;
2090                         vdev->vp_handles[i] = vpath->handle;
2091                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2092                         vdev->stats.vpaths_open++;
2093                 } else {
2094                         vdev->stats.vpath_open_fail++;
2095                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2096                                         "open with status: %d",
2097                                         vdev->ndev->name, vpath->device_id,
2098                                         status);
2099                         vxge_close_vpaths(vdev, 0);
2100                         return -EPERM;
2101                 }
2102
2103                 vp_id = vpath->handle->vpath->vp_id;
2104                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2105         }
2106
2107         return VXGE_HW_OK;
2108 }
2109
2110 /**
2111  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2112  *  if the interrupts are not within a range
2113  *  @fifo: pointer to transmit fifo structure
2114  *  Description: The function changes boundary timer and restriction timer
2115  *  value depends on the traffic
2116  *  Return Value: None
2117  */
2118 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2119 {
2120         fifo->interrupt_count++;
2121         if (time_before(fifo->jiffies + HZ / 100, jiffies)) {
2122                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2123
2124                 fifo->jiffies = jiffies;
2125                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2126                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2127                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2128                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2129                 } else if (hw_fifo->rtimer != 0) {
2130                         hw_fifo->rtimer = 0;
2131                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2132                 }
2133                 fifo->interrupt_count = 0;
2134         }
2135 }
2136
2137 /**
2138  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2139  *  if the interrupts are not within a range
2140  *  @ring: pointer to receive ring structure
2141  *  Description: The function increases of decreases the packet counts within
2142  *  the ranges of traffic utilization, if the interrupts due to this ring are
2143  *  not within a fixed range.
2144  *  Return Value: Nothing
2145  */
2146 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2147 {
2148         ring->interrupt_count++;
2149         if (time_before(ring->jiffies + HZ / 100, jiffies)) {
2150                 struct __vxge_hw_ring *hw_ring = ring->handle;
2151
2152                 ring->jiffies = jiffies;
2153                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2154                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2155                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2156                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2157                 } else if (hw_ring->rtimer != 0) {
2158                         hw_ring->rtimer = 0;
2159                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2160                 }
2161                 ring->interrupt_count = 0;
2162         }
2163 }
2164
2165 /*
2166  *  vxge_isr_napi
2167  *  @irq: the irq of the device.
2168  *  @dev_id: a void pointer to the hldev structure of the Titan device
2169  *  @ptregs: pointer to the registers pushed on the stack.
2170  *
2171  *  This function is the ISR handler of the device when napi is enabled. It
2172  *  identifies the reason for the interrupt and calls the relevant service
2173  *  routines.
2174  */
2175 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2176 {
2177         struct __vxge_hw_device *hldev;
2178         u64 reason;
2179         enum vxge_hw_status status;
2180         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2181
2182         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2183
2184         hldev = pci_get_drvdata(vdev->pdev);
2185
2186         if (pci_channel_offline(vdev->pdev))
2187                 return IRQ_NONE;
2188
2189         if (unlikely(!is_vxge_card_up(vdev)))
2190                 return IRQ_HANDLED;
2191
2192         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2193         if (status == VXGE_HW_OK) {
2194                 vxge_hw_device_mask_all(hldev);
2195
2196                 if (reason &
2197                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2198                         vdev->vpaths_deployed >>
2199                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2200
2201                         vxge_hw_device_clear_tx_rx(hldev);
2202                         napi_schedule(&vdev->napi);
2203                         vxge_debug_intr(VXGE_TRACE,
2204                                 "%s:%d  Exiting...", __func__, __LINE__);
2205                         return IRQ_HANDLED;
2206                 } else
2207                         vxge_hw_device_unmask_all(hldev);
2208         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2209                 (status == VXGE_HW_ERR_CRITICAL) ||
2210                 (status == VXGE_HW_ERR_FIFO))) {
2211                 vxge_hw_device_mask_all(hldev);
2212                 vxge_hw_device_flush_io(hldev);
2213                 return IRQ_HANDLED;
2214         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2215                 return IRQ_HANDLED;
2216
2217         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2218         return IRQ_NONE;
2219 }
2220
2221 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2222 {
2223         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2224
2225         adaptive_coalesce_tx_interrupts(fifo);
2226
2227         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2228                                   fifo->tx_vector_no);
2229
2230         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2231                                    fifo->tx_vector_no);
2232
2233         VXGE_COMPLETE_VPATH_TX(fifo);
2234
2235         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2236                                     fifo->tx_vector_no);
2237
2238         return IRQ_HANDLED;
2239 }
2240
2241 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2242 {
2243         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2244
2245         adaptive_coalesce_rx_interrupts(ring);
2246
2247         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2248                                   ring->rx_vector_no);
2249
2250         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2251                                    ring->rx_vector_no);
2252
2253         napi_schedule(&ring->napi);
2254         return IRQ_HANDLED;
2255 }
2256
2257 static irqreturn_t
2258 vxge_alarm_msix_handle(int irq, void *dev_id)
2259 {
2260         int i;
2261         enum vxge_hw_status status;
2262         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2263         struct vxgedev *vdev = vpath->vdev;
2264         int msix_id = (vpath->handle->vpath->vp_id *
2265                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2266
2267         for (i = 0; i < vdev->no_of_vpath; i++) {
2268                 /* Reduce the chance of losing alarm interrupts by masking
2269                  * the vector. A pending bit will be set if an alarm is
2270                  * generated and on unmask the interrupt will be fired.
2271                  */
2272                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2273                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2274
2275                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2276                         vdev->exec_mode);
2277                 if (status == VXGE_HW_OK) {
2278                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2279                                                   msix_id);
2280                         continue;
2281                 }
2282                 vxge_debug_intr(VXGE_ERR,
2283                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2284                         VXGE_DRIVER_NAME, status);
2285         }
2286         return IRQ_HANDLED;
2287 }
2288
2289 static int vxge_alloc_msix(struct vxgedev *vdev)
2290 {
2291         int j, i, ret = 0;
2292         int msix_intr_vect = 0, temp;
2293         vdev->intr_cnt = 0;
2294
2295 start:
2296         /* Tx/Rx MSIX Vectors count */
2297         vdev->intr_cnt = vdev->no_of_vpath * 2;
2298
2299         /* Alarm MSIX Vectors count */
2300         vdev->intr_cnt++;
2301
2302         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2303                                 GFP_KERNEL);
2304         if (!vdev->entries) {
2305                 vxge_debug_init(VXGE_ERR,
2306                         "%s: memory allocation failed",
2307                         VXGE_DRIVER_NAME);
2308                 ret = -ENOMEM;
2309                 goto alloc_entries_failed;
2310         }
2311
2312         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2313                                      sizeof(struct vxge_msix_entry),
2314                                      GFP_KERNEL);
2315         if (!vdev->vxge_entries) {
2316                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2317                         VXGE_DRIVER_NAME);
2318                 ret = -ENOMEM;
2319                 goto alloc_vxge_entries_failed;
2320         }
2321
2322         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2323
2324                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2325
2326                 /* Initialize the fifo vector */
2327                 vdev->entries[j].entry = msix_intr_vect;
2328                 vdev->vxge_entries[j].entry = msix_intr_vect;
2329                 vdev->vxge_entries[j].in_use = 0;
2330                 j++;
2331
2332                 /* Initialize the ring vector */
2333                 vdev->entries[j].entry = msix_intr_vect + 1;
2334                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2335                 vdev->vxge_entries[j].in_use = 0;
2336                 j++;
2337         }
2338
2339         /* Initialize the alarm vector */
2340         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2341         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2342         vdev->vxge_entries[j].in_use = 0;
2343
2344         ret = pci_enable_msix_range(vdev->pdev,
2345                                     vdev->entries, 3, vdev->intr_cnt);
2346         if (ret < 0) {
2347                 ret = -ENODEV;
2348                 goto enable_msix_failed;
2349         } else if (ret < vdev->intr_cnt) {
2350                 pci_disable_msix(vdev->pdev);
2351
2352                 vxge_debug_init(VXGE_ERR,
2353                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2354                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2355                 if (max_config_vpath != VXGE_USE_DEFAULT) {
2356                         ret = -ENODEV;
2357                         goto enable_msix_failed;
2358                 }
2359
2360                 kfree(vdev->entries);
2361                 kfree(vdev->vxge_entries);
2362                 vdev->entries = NULL;
2363                 vdev->vxge_entries = NULL;
2364                 /* Try with less no of vector by reducing no of vpaths count */
2365                 temp = (ret - 1)/2;
2366                 vxge_close_vpaths(vdev, temp);
2367                 vdev->no_of_vpath = temp;
2368                 goto start;
2369         }
2370         return 0;
2371
2372 enable_msix_failed:
2373         kfree(vdev->vxge_entries);
2374 alloc_vxge_entries_failed:
2375         kfree(vdev->entries);
2376 alloc_entries_failed:
2377         return ret;
2378 }
2379
2380 static int vxge_enable_msix(struct vxgedev *vdev)
2381 {
2382
2383         int i, ret = 0;
2384         /* 0 - Tx, 1 - Rx  */
2385         int tim_msix_id[4] = {0, 1, 0, 0};
2386
2387         vdev->intr_cnt = 0;
2388
2389         /* allocate msix vectors */
2390         ret = vxge_alloc_msix(vdev);
2391         if (!ret) {
2392                 for (i = 0; i < vdev->no_of_vpath; i++) {
2393                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2394
2395                         /* If fifo or ring are not enabled, the MSIX vector for
2396                          * it should be set to 0.
2397                          */
2398                         vpath->ring.rx_vector_no = (vpath->device_id *
2399                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2400
2401                         vpath->fifo.tx_vector_no = (vpath->device_id *
2402                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2403
2404                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2405                                                VXGE_ALARM_MSIX_ID);
2406                 }
2407         }
2408
2409         return ret;
2410 }
2411
2412 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2413 {
2414         int intr_cnt;
2415
2416         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2417                 intr_cnt++) {
2418                 if (vdev->vxge_entries[intr_cnt].in_use) {
2419                         synchronize_irq(vdev->entries[intr_cnt].vector);
2420                         free_irq(vdev->entries[intr_cnt].vector,
2421                                 vdev->vxge_entries[intr_cnt].arg);
2422                         vdev->vxge_entries[intr_cnt].in_use = 0;
2423                 }
2424         }
2425
2426         kfree(vdev->entries);
2427         kfree(vdev->vxge_entries);
2428         vdev->entries = NULL;
2429         vdev->vxge_entries = NULL;
2430
2431         if (vdev->config.intr_type == MSI_X)
2432                 pci_disable_msix(vdev->pdev);
2433 }
2434
2435 static void vxge_rem_isr(struct vxgedev *vdev)
2436 {
2437         if (IS_ENABLED(CONFIG_PCI_MSI) &&
2438             vdev->config.intr_type == MSI_X) {
2439                 vxge_rem_msix_isr(vdev);
2440         } else if (vdev->config.intr_type == INTA) {
2441                         synchronize_irq(vdev->pdev->irq);
2442                         free_irq(vdev->pdev->irq, vdev);
2443         }
2444 }
2445
2446 static int vxge_add_isr(struct vxgedev *vdev)
2447 {
2448         int ret = 0;
2449         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2450         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2451
2452         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X)
2453                 ret = vxge_enable_msix(vdev);
2454
2455         if (ret) {
2456                 vxge_debug_init(VXGE_ERR,
2457                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2458                 vxge_debug_init(VXGE_ERR,
2459                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2460                 vdev->config.intr_type = INTA;
2461         }
2462
2463         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) {
2464                 for (intr_idx = 0;
2465                      intr_idx < (vdev->no_of_vpath *
2466                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2467
2468                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2469                         irq_req = 0;
2470
2471                         switch (msix_idx) {
2472                         case 0:
2473                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2474                                         "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2475                                         vdev->ndev->name,
2476                                         vdev->entries[intr_cnt].entry,
2477                                         pci_fun, vp_idx);
2478                                 ret = request_irq(
2479                                         vdev->entries[intr_cnt].vector,
2480                                         vxge_tx_msix_handle, 0,
2481                                         vdev->desc[intr_cnt],
2482                                         &vdev->vpaths[vp_idx].fifo);
2483                                 vdev->vxge_entries[intr_cnt].arg =
2484                                                 &vdev->vpaths[vp_idx].fifo;
2485                                 irq_req = 1;
2486                                 break;
2487                         case 1:
2488                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2489                                         "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2490                                         vdev->ndev->name,
2491                                         vdev->entries[intr_cnt].entry,
2492                                         pci_fun, vp_idx);
2493                                 ret = request_irq(
2494                                         vdev->entries[intr_cnt].vector,
2495                                         vxge_rx_msix_napi_handle, 0,
2496                                         vdev->desc[intr_cnt],
2497                                         &vdev->vpaths[vp_idx].ring);
2498                                 vdev->vxge_entries[intr_cnt].arg =
2499                                                 &vdev->vpaths[vp_idx].ring;
2500                                 irq_req = 1;
2501                                 break;
2502                         }
2503
2504                         if (ret) {
2505                                 vxge_debug_init(VXGE_ERR,
2506                                         "%s: MSIX - %d  Registration failed",
2507                                         vdev->ndev->name, intr_cnt);
2508                                 vxge_rem_msix_isr(vdev);
2509                                 vdev->config.intr_type = INTA;
2510                                 vxge_debug_init(VXGE_ERR,
2511                                         "%s: Defaulting to INTA",
2512                                         vdev->ndev->name);
2513                                 goto INTA_MODE;
2514                         }
2515
2516                         if (irq_req) {
2517                                 /* We requested for this msix interrupt */
2518                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2519                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2520                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2521                                 vxge_hw_vpath_msix_unmask(
2522                                         vdev->vpaths[vp_idx].handle,
2523                                         msix_idx);
2524                                 intr_cnt++;
2525                         }
2526
2527                         /* Point to next vpath handler */
2528                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2529                             (vp_idx < (vdev->no_of_vpath - 1)))
2530                                 vp_idx++;
2531                 }
2532
2533                 intr_cnt = vdev->no_of_vpath * 2;
2534                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2535                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2536                         vdev->ndev->name,
2537                         vdev->entries[intr_cnt].entry,
2538                         pci_fun);
2539                 /* For Alarm interrupts */
2540                 ret = request_irq(vdev->entries[intr_cnt].vector,
2541                                         vxge_alarm_msix_handle, 0,
2542                                         vdev->desc[intr_cnt],
2543                                         &vdev->vpaths[0]);
2544                 if (ret) {
2545                         vxge_debug_init(VXGE_ERR,
2546                                 "%s: MSIX - %d Registration failed",
2547                                 vdev->ndev->name, intr_cnt);
2548                         vxge_rem_msix_isr(vdev);
2549                         vdev->config.intr_type = INTA;
2550                         vxge_debug_init(VXGE_ERR,
2551                                 "%s: Defaulting to INTA",
2552                                 vdev->ndev->name);
2553                         goto INTA_MODE;
2554                 }
2555
2556                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2557                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2558                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2559                                         msix_idx);
2560                 vdev->vxge_entries[intr_cnt].in_use = 1;
2561                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2562         }
2563
2564 INTA_MODE:
2565         if (vdev->config.intr_type == INTA) {
2566                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2567                         "%s:vxge:INTA", vdev->ndev->name);
2568                 vxge_hw_device_set_intr_type(vdev->devh,
2569                         VXGE_HW_INTR_MODE_IRQLINE);
2570
2571                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2572
2573                 ret = request_irq((int) vdev->pdev->irq,
2574                         vxge_isr_napi,
2575                         IRQF_SHARED, vdev->desc[0], vdev);
2576                 if (ret) {
2577                         vxge_debug_init(VXGE_ERR,
2578                                 "%s %s-%d: ISR registration failed",
2579                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2580                         return -ENODEV;
2581                 }
2582                 vxge_debug_init(VXGE_TRACE,
2583                         "new %s-%d line allocated",
2584                         "IRQ", vdev->pdev->irq);
2585         }
2586
2587         return VXGE_HW_OK;
2588 }
2589
2590 static void vxge_poll_vp_reset(struct timer_list *t)
2591 {
2592         struct vxgedev *vdev = from_timer(vdev, t, vp_reset_timer);
2593         int i, j = 0;
2594
2595         for (i = 0; i < vdev->no_of_vpath; i++) {
2596                 if (test_bit(i, &vdev->vp_reset)) {
2597                         vxge_reset_vpath(vdev, i);
2598                         j++;
2599                 }
2600         }
2601         if (j && (vdev->config.intr_type != MSI_X)) {
2602                 vxge_hw_device_unmask_all(vdev->devh);
2603                 vxge_hw_device_flush_io(vdev->devh);
2604         }
2605
2606         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2607 }
2608
2609 static void vxge_poll_vp_lockup(struct timer_list *t)
2610 {
2611         struct vxgedev *vdev = from_timer(vdev, t, vp_lockup_timer);
2612         enum vxge_hw_status status = VXGE_HW_OK;
2613         struct vxge_vpath *vpath;
2614         struct vxge_ring *ring;
2615         int i;
2616         unsigned long rx_frms;
2617
2618         for (i = 0; i < vdev->no_of_vpath; i++) {
2619                 ring = &vdev->vpaths[i].ring;
2620
2621                 /* Truncated to machine word size number of frames */
2622                 rx_frms = READ_ONCE(ring->stats.rx_frms);
2623
2624                 /* Did this vpath received any packets */
2625                 if (ring->stats.prev_rx_frms == rx_frms) {
2626                         status = vxge_hw_vpath_check_leak(ring->handle);
2627
2628                         /* Did it received any packets last time */
2629                         if ((VXGE_HW_FAIL == status) &&
2630                                 (VXGE_HW_FAIL == ring->last_status)) {
2631
2632                                 /* schedule vpath reset */
2633                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2634                                         vpath = &vdev->vpaths[i];
2635
2636                                         /* disable interrupts for this vpath */
2637                                         vxge_vpath_intr_disable(vdev, i);
2638
2639                                         /* stop the queue for this vpath */
2640                                         netif_tx_stop_queue(vpath->fifo.txq);
2641                                         continue;
2642                                 }
2643                         }
2644                 }
2645                 ring->stats.prev_rx_frms = rx_frms;
2646                 ring->last_status = status;
2647         }
2648
2649         /* Check every 1 milli second */
2650         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2651 }
2652
2653 static netdev_features_t vxge_fix_features(struct net_device *dev,
2654         netdev_features_t features)
2655 {
2656         netdev_features_t changed = dev->features ^ features;
2657
2658         /* Enabling RTH requires some of the logic in vxge_device_register and a
2659          * vpath reset.  Due to these restrictions, only allow modification
2660          * while the interface is down.
2661          */
2662         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2663                 features ^= NETIF_F_RXHASH;
2664
2665         return features;
2666 }
2667
2668 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2669 {
2670         struct vxgedev *vdev = netdev_priv(dev);
2671         netdev_features_t changed = dev->features ^ features;
2672
2673         if (!(changed & NETIF_F_RXHASH))
2674                 return 0;
2675
2676         /* !netif_running() ensured by vxge_fix_features() */
2677
2678         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2679         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2680                 dev->features = features ^ NETIF_F_RXHASH;
2681                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2682                 return -EIO;
2683         }
2684
2685         return 0;
2686 }
2687
2688 /**
2689  * vxge_open
2690  * @dev: pointer to the device structure.
2691  *
2692  * This function is the open entry point of the driver. It mainly calls a
2693  * function to allocate Rx buffers and inserts them into the buffer
2694  * descriptors and then enables the Rx part of the NIC.
2695  * Return value: '0' on success and an appropriate (-)ve integer as
2696  * defined in errno.h file on failure.
2697  */
2698 static int vxge_open(struct net_device *dev)
2699 {
2700         enum vxge_hw_status status;
2701         struct vxgedev *vdev;
2702         struct __vxge_hw_device *hldev;
2703         struct vxge_vpath *vpath;
2704         int ret = 0;
2705         int i;
2706         u64 val64;
2707
2708         vxge_debug_entryexit(VXGE_TRACE,
2709                 "%s: %s:%d", dev->name, __func__, __LINE__);
2710
2711         vdev = netdev_priv(dev);
2712         hldev = pci_get_drvdata(vdev->pdev);
2713
2714         /* make sure you have link off by default every time Nic is
2715          * initialized */
2716         netif_carrier_off(dev);
2717
2718         /* Open VPATHs */
2719         status = vxge_open_vpaths(vdev);
2720         if (status != VXGE_HW_OK) {
2721                 vxge_debug_init(VXGE_ERR,
2722                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2723                 ret = -EPERM;
2724                 goto out0;
2725         }
2726
2727         vdev->mtu = dev->mtu;
2728
2729         status = vxge_add_isr(vdev);
2730         if (status != VXGE_HW_OK) {
2731                 vxge_debug_init(VXGE_ERR,
2732                         "%s: fatal: ISR add failed", dev->name);
2733                 ret = -EPERM;
2734                 goto out1;
2735         }
2736
2737         if (vdev->config.intr_type != MSI_X) {
2738                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2739                         vdev->config.napi_weight);
2740                 napi_enable(&vdev->napi);
2741                 for (i = 0; i < vdev->no_of_vpath; i++) {
2742                         vpath = &vdev->vpaths[i];
2743                         vpath->ring.napi_p = &vdev->napi;
2744                 }
2745         } else {
2746                 for (i = 0; i < vdev->no_of_vpath; i++) {
2747                         vpath = &vdev->vpaths[i];
2748                         netif_napi_add(dev, &vpath->ring.napi,
2749                             vxge_poll_msix, vdev->config.napi_weight);
2750                         napi_enable(&vpath->ring.napi);
2751                         vpath->ring.napi_p = &vpath->ring.napi;
2752                 }
2753         }
2754
2755         /* configure RTH */
2756         if (vdev->config.rth_steering) {
2757                 status = vxge_rth_configure(vdev);
2758                 if (status != VXGE_HW_OK) {
2759                         vxge_debug_init(VXGE_ERR,
2760                                 "%s: fatal: RTH configuration failed",
2761                                 dev->name);
2762                         ret = -EPERM;
2763                         goto out2;
2764                 }
2765         }
2766         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2767                hldev->config.rth_en ? "enabled" : "disabled");
2768
2769         for (i = 0; i < vdev->no_of_vpath; i++) {
2770                 vpath = &vdev->vpaths[i];
2771
2772                 /* set initial mtu before enabling the device */
2773                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2774                 if (status != VXGE_HW_OK) {
2775                         vxge_debug_init(VXGE_ERR,
2776                                 "%s: fatal: can not set new MTU", dev->name);
2777                         ret = -EPERM;
2778                         goto out2;
2779                 }
2780         }
2781
2782         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2783         vxge_debug_init(vdev->level_trace,
2784                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2785         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2786
2787         /* Restore the DA, VID table and also multicast and promiscuous mode
2788          * states
2789          */
2790         if (vdev->all_multi_flg) {
2791                 for (i = 0; i < vdev->no_of_vpath; i++) {
2792                         vpath = &vdev->vpaths[i];
2793                         vxge_restore_vpath_mac_addr(vpath);
2794                         vxge_restore_vpath_vid_table(vpath);
2795
2796                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2797                         if (status != VXGE_HW_OK)
2798                                 vxge_debug_init(VXGE_ERR,
2799                                         "%s:%d Enabling multicast failed",
2800                                         __func__, __LINE__);
2801                 }
2802         }
2803
2804         /* Enable vpath to sniff all unicast/multicast traffic that not
2805          * addressed to them. We allow promiscuous mode for PF only
2806          */
2807
2808         val64 = 0;
2809         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2810                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2811
2812         vxge_hw_mgmt_reg_write(vdev->devh,
2813                 vxge_hw_mgmt_reg_type_mrpcim,
2814                 0,
2815                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2816                         rxmac_authorize_all_addr),
2817                 val64);
2818
2819         vxge_hw_mgmt_reg_write(vdev->devh,
2820                 vxge_hw_mgmt_reg_type_mrpcim,
2821                 0,
2822                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2823                         rxmac_authorize_all_vid),
2824                 val64);
2825
2826         vxge_set_multicast(dev);
2827
2828         /* Enabling Bcast and mcast for all vpath */
2829         for (i = 0; i < vdev->no_of_vpath; i++) {
2830                 vpath = &vdev->vpaths[i];
2831                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2832                 if (status != VXGE_HW_OK)
2833                         vxge_debug_init(VXGE_ERR,
2834                                 "%s : Can not enable bcast for vpath "
2835                                 "id %d", dev->name, i);
2836                 if (vdev->config.addr_learn_en) {
2837                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2838                         if (status != VXGE_HW_OK)
2839                                 vxge_debug_init(VXGE_ERR,
2840                                         "%s : Can not enable mcast for vpath "
2841                                         "id %d", dev->name, i);
2842                 }
2843         }
2844
2845         vxge_hw_device_setpause_data(vdev->devh, 0,
2846                 vdev->config.tx_pause_enable,
2847                 vdev->config.rx_pause_enable);
2848
2849         if (vdev->vp_reset_timer.function == NULL)
2850                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset,
2851                               HZ / 2);
2852
2853         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2854         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2855                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup,
2856                               HZ / 2);
2857
2858         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2859
2860         smp_wmb();
2861
2862         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2863                 netif_carrier_on(vdev->ndev);
2864                 netdev_notice(vdev->ndev, "Link Up\n");
2865                 vdev->stats.link_up++;
2866         }
2867
2868         vxge_hw_device_intr_enable(vdev->devh);
2869
2870         smp_wmb();
2871
2872         for (i = 0; i < vdev->no_of_vpath; i++) {
2873                 vpath = &vdev->vpaths[i];
2874
2875                 vxge_hw_vpath_enable(vpath->handle);
2876                 smp_wmb();
2877                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2878         }
2879
2880         netif_tx_start_all_queues(vdev->ndev);
2881
2882         /* configure CI */
2883         vxge_config_ci_for_tti_rti(vdev);
2884
2885         goto out0;
2886
2887 out2:
2888         vxge_rem_isr(vdev);
2889
2890         /* Disable napi */
2891         if (vdev->config.intr_type != MSI_X)
2892                 napi_disable(&vdev->napi);
2893         else {
2894                 for (i = 0; i < vdev->no_of_vpath; i++)
2895                         napi_disable(&vdev->vpaths[i].ring.napi);
2896         }
2897
2898 out1:
2899         vxge_close_vpaths(vdev, 0);
2900 out0:
2901         vxge_debug_entryexit(VXGE_TRACE,
2902                                 "%s: %s:%d  Exiting...",
2903                                 dev->name, __func__, __LINE__);
2904         return ret;
2905 }
2906
2907 /* Loop through the mac address list and delete all the entries */
2908 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2909 {
2910
2911         struct list_head *entry, *next;
2912         if (list_empty(&vpath->mac_addr_list))
2913                 return;
2914
2915         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2916                 list_del(entry);
2917                 kfree(entry);
2918         }
2919 }
2920
2921 static void vxge_napi_del_all(struct vxgedev *vdev)
2922 {
2923         int i;
2924         if (vdev->config.intr_type != MSI_X)
2925                 netif_napi_del(&vdev->napi);
2926         else {
2927                 for (i = 0; i < vdev->no_of_vpath; i++)
2928                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2929         }
2930 }
2931
2932 static int do_vxge_close(struct net_device *dev, int do_io)
2933 {
2934         enum vxge_hw_status status;
2935         struct vxgedev *vdev;
2936         struct __vxge_hw_device *hldev;
2937         int i;
2938         u64 val64, vpath_vector;
2939         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2940                 dev->name, __func__, __LINE__);
2941
2942         vdev = netdev_priv(dev);
2943         hldev = pci_get_drvdata(vdev->pdev);
2944
2945         if (unlikely(!is_vxge_card_up(vdev)))
2946                 return 0;
2947
2948         /* If vxge_handle_crit_err task is executing,
2949          * wait till it completes. */
2950         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2951                 msleep(50);
2952
2953         if (do_io) {
2954                 /* Put the vpath back in normal mode */
2955                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2956                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2957                                 vxge_hw_mgmt_reg_type_mrpcim,
2958                                 0,
2959                                 (ulong)offsetof(
2960                                         struct vxge_hw_mrpcim_reg,
2961                                         rts_mgr_cbasin_cfg),
2962                                 &val64);
2963                 if (status == VXGE_HW_OK) {
2964                         val64 &= ~vpath_vector;
2965                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2966                                         vxge_hw_mgmt_reg_type_mrpcim,
2967                                         0,
2968                                         (ulong)offsetof(
2969                                                 struct vxge_hw_mrpcim_reg,
2970                                                 rts_mgr_cbasin_cfg),
2971                                         val64);
2972                 }
2973
2974                 /* Remove the function 0 from promiscuous mode */
2975                 vxge_hw_mgmt_reg_write(vdev->devh,
2976                         vxge_hw_mgmt_reg_type_mrpcim,
2977                         0,
2978                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2979                                 rxmac_authorize_all_addr),
2980                         0);
2981
2982                 vxge_hw_mgmt_reg_write(vdev->devh,
2983                         vxge_hw_mgmt_reg_type_mrpcim,
2984                         0,
2985                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2986                                 rxmac_authorize_all_vid),
2987                         0);
2988
2989                 smp_wmb();
2990         }
2991
2992         if (vdev->titan1)
2993                 del_timer_sync(&vdev->vp_lockup_timer);
2994
2995         del_timer_sync(&vdev->vp_reset_timer);
2996
2997         if (do_io)
2998                 vxge_hw_device_wait_receive_idle(hldev);
2999
3000         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3001
3002         /* Disable napi */
3003         if (vdev->config.intr_type != MSI_X)
3004                 napi_disable(&vdev->napi);
3005         else {
3006                 for (i = 0; i < vdev->no_of_vpath; i++)
3007                         napi_disable(&vdev->vpaths[i].ring.napi);
3008         }
3009
3010         netif_carrier_off(vdev->ndev);
3011         netdev_notice(vdev->ndev, "Link Down\n");
3012         netif_tx_stop_all_queues(vdev->ndev);
3013
3014         /* Note that at this point xmit() is stopped by upper layer */
3015         if (do_io)
3016                 vxge_hw_device_intr_disable(vdev->devh);
3017
3018         vxge_rem_isr(vdev);
3019
3020         vxge_napi_del_all(vdev);
3021
3022         if (do_io)
3023                 vxge_reset_all_vpaths(vdev);
3024
3025         vxge_close_vpaths(vdev, 0);
3026
3027         vxge_debug_entryexit(VXGE_TRACE,
3028                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3029
3030         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3031
3032         return 0;
3033 }
3034
3035 /**
3036  * vxge_close
3037  * @dev: device pointer.
3038  *
3039  * This is the stop entry point of the driver. It needs to undo exactly
3040  * whatever was done by the open entry point, thus it's usually referred to
3041  * as the close function.Among other things this function mainly stops the
3042  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3043  * Return value: '0' on success and an appropriate (-)ve integer as
3044  * defined in errno.h file on failure.
3045  */
3046 static int vxge_close(struct net_device *dev)
3047 {
3048         do_vxge_close(dev, 1);
3049         return 0;
3050 }
3051
3052 /**
3053  * vxge_change_mtu
3054  * @dev: net device pointer.
3055  * @new_mtu :the new MTU size for the device.
3056  *
3057  * A driver entry point to change MTU size for the device. Before changing
3058  * the MTU the device must be stopped.
3059  */
3060 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3061 {
3062         struct vxgedev *vdev = netdev_priv(dev);
3063
3064         vxge_debug_entryexit(vdev->level_trace,
3065                 "%s:%d", __func__, __LINE__);
3066
3067         /* check if device is down already */
3068         if (unlikely(!is_vxge_card_up(vdev))) {
3069                 /* just store new value, will use later on open() */
3070                 dev->mtu = new_mtu;
3071                 vxge_debug_init(vdev->level_err,
3072                         "%s", "device is down on MTU change");
3073                 return 0;
3074         }
3075
3076         vxge_debug_init(vdev->level_trace,
3077                 "trying to apply new MTU %d", new_mtu);
3078
3079         if (vxge_close(dev))
3080                 return -EIO;
3081
3082         dev->mtu = new_mtu;
3083         vdev->mtu = new_mtu;
3084
3085         if (vxge_open(dev))
3086                 return -EIO;
3087
3088         vxge_debug_init(vdev->level_trace,
3089                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3090
3091         vxge_debug_entryexit(vdev->level_trace,
3092                 "%s:%d  Exiting...", __func__, __LINE__);
3093
3094         return 0;
3095 }
3096
3097 /**
3098  * vxge_get_stats64
3099  * @dev: pointer to the device structure
3100  * @net_stats: pointer to struct rtnl_link_stats64
3101  *
3102  */
3103 static void
3104 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3105 {
3106         struct vxgedev *vdev = netdev_priv(dev);
3107         int k;
3108
3109         /* net_stats already zeroed by caller */
3110         for (k = 0; k < vdev->no_of_vpath; k++) {
3111                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3112                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3113                 unsigned int start;
3114                 u64 packets, bytes, multicast;
3115
3116                 do {
3117                         start = u64_stats_fetch_begin_irq(&rxstats->syncp);
3118
3119                         packets   = rxstats->rx_frms;
3120                         multicast = rxstats->rx_mcast;
3121                         bytes     = rxstats->rx_bytes;
3122                 } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start));
3123
3124                 net_stats->rx_packets += packets;
3125                 net_stats->rx_bytes += bytes;
3126                 net_stats->multicast += multicast;
3127
3128                 net_stats->rx_errors += rxstats->rx_errors;
3129                 net_stats->rx_dropped += rxstats->rx_dropped;
3130
3131                 do {
3132                         start = u64_stats_fetch_begin_irq(&txstats->syncp);
3133
3134                         packets = txstats->tx_frms;
3135                         bytes   = txstats->tx_bytes;
3136                 } while (u64_stats_fetch_retry_irq(&txstats->syncp, start));
3137
3138                 net_stats->tx_packets += packets;
3139                 net_stats->tx_bytes += bytes;
3140                 net_stats->tx_errors += txstats->tx_errors;
3141         }
3142 }
3143
3144 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3145 {
3146         enum vxge_hw_status status;
3147         u64 val64;
3148
3149         /* Timestamp is passed to the driver via the FCS, therefore we
3150          * must disable the FCS stripping by the adapter.  Since this is
3151          * required for the driver to load (due to a hardware bug),
3152          * there is no need to do anything special here.
3153          */
3154         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3155                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3156                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3157
3158         status = vxge_hw_mgmt_reg_write(devh,
3159                                         vxge_hw_mgmt_reg_type_mrpcim,
3160                                         0,
3161                                         offsetof(struct vxge_hw_mrpcim_reg,
3162                                                  xmac_timestamp),
3163                                         val64);
3164         vxge_hw_device_flush_io(devh);
3165         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3166         return status;
3167 }
3168
3169 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3170 {
3171         struct hwtstamp_config config;
3172         int i;
3173
3174         if (copy_from_user(&config, data, sizeof(config)))
3175                 return -EFAULT;
3176
3177         /* reserved for future extensions */
3178         if (config.flags)
3179                 return -EINVAL;
3180
3181         /* Transmit HW Timestamp not supported */
3182         switch (config.tx_type) {
3183         case HWTSTAMP_TX_OFF:
3184                 break;
3185         case HWTSTAMP_TX_ON:
3186         default:
3187                 return -ERANGE;
3188         }
3189
3190         switch (config.rx_filter) {
3191         case HWTSTAMP_FILTER_NONE:
3192                 vdev->rx_hwts = 0;
3193                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3194                 break;
3195
3196         case HWTSTAMP_FILTER_ALL:
3197         case HWTSTAMP_FILTER_SOME:
3198         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3199         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3200         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3201         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3202         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3203         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3204         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3205         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3206         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3207         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3208         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3209         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3210         case HWTSTAMP_FILTER_NTP_ALL:
3211                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3212                         return -EFAULT;
3213
3214                 vdev->rx_hwts = 1;
3215                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3216                 break;
3217
3218         default:
3219                  return -ERANGE;
3220         }
3221
3222         for (i = 0; i < vdev->no_of_vpath; i++)
3223                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3224
3225         if (copy_to_user(data, &config, sizeof(config)))
3226                 return -EFAULT;
3227
3228         return 0;
3229 }
3230
3231 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3232 {
3233         struct hwtstamp_config config;
3234
3235         config.flags = 0;
3236         config.tx_type = HWTSTAMP_TX_OFF;
3237         config.rx_filter = (vdev->rx_hwts ?
3238                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3239
3240         if (copy_to_user(data, &config, sizeof(config)))
3241                 return -EFAULT;
3242
3243         return 0;
3244 }
3245
3246 /**
3247  * vxge_ioctl
3248  * @dev: Device pointer.
3249  * @rq: An IOCTL specific structure, that can contain a pointer to
3250  *       a proprietary structure used to pass information to the driver.
3251  * @cmd: This is used to distinguish between the different commands that
3252  *       can be passed to the IOCTL functions.
3253  *
3254  * Entry point for the Ioctl.
3255  */
3256 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3257 {
3258         struct vxgedev *vdev = netdev_priv(dev);
3259
3260         switch (cmd) {
3261         case SIOCSHWTSTAMP:
3262                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3263         case SIOCGHWTSTAMP:
3264                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3265         default:
3266                 return -EOPNOTSUPP;
3267         }
3268 }
3269
3270 /**
3271  * vxge_tx_watchdog
3272  * @dev: pointer to net device structure
3273  * @txqueue: index of the hanging queue
3274  *
3275  * Watchdog for transmit side.
3276  * This function is triggered if the Tx Queue is stopped
3277  * for a pre-defined amount of time when the Interface is still up.
3278  */
3279 static void vxge_tx_watchdog(struct net_device *dev, unsigned int txqueue)
3280 {
3281         struct vxgedev *vdev;
3282
3283         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3284
3285         vdev = netdev_priv(dev);
3286
3287         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3288
3289         schedule_work(&vdev->reset_task);
3290         vxge_debug_entryexit(VXGE_TRACE,
3291                 "%s:%d  Exiting...", __func__, __LINE__);
3292 }
3293
3294 /**
3295  * vxge_vlan_rx_add_vid
3296  * @dev: net device pointer.
3297  * @proto: vlan protocol
3298  * @vid: vid
3299  *
3300  * Add the vlan id to the devices vlan id table
3301  */
3302 static int
3303 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3304 {
3305         struct vxgedev *vdev = netdev_priv(dev);
3306         struct vxge_vpath *vpath;
3307         int vp_id;
3308
3309         /* Add these vlan to the vid table */
3310         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3311                 vpath = &vdev->vpaths[vp_id];
3312                 if (!vpath->is_open)
3313                         continue;
3314                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3315         }
3316         set_bit(vid, vdev->active_vlans);
3317         return 0;
3318 }
3319
3320 /**
3321  * vxge_vlan_rx_kill_vid
3322  * @dev: net device pointer.
3323  * @proto: vlan protocol
3324  * @vid: vid
3325  *
3326  * Remove the vlan id from the device's vlan id table
3327  */
3328 static int
3329 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3330 {
3331         struct vxgedev *vdev = netdev_priv(dev);
3332         struct vxge_vpath *vpath;
3333         int vp_id;
3334
3335         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3336
3337         /* Delete this vlan from the vid table */
3338         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3339                 vpath = &vdev->vpaths[vp_id];
3340                 if (!vpath->is_open)
3341                         continue;
3342                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3343         }
3344         vxge_debug_entryexit(VXGE_TRACE,
3345                 "%s:%d  Exiting...", __func__, __LINE__);
3346         clear_bit(vid, vdev->active_vlans);
3347         return 0;
3348 }
3349
3350 static const struct net_device_ops vxge_netdev_ops = {
3351         .ndo_open               = vxge_open,
3352         .ndo_stop               = vxge_close,
3353         .ndo_get_stats64        = vxge_get_stats64,
3354         .ndo_start_xmit         = vxge_xmit,
3355         .ndo_validate_addr      = eth_validate_addr,
3356         .ndo_set_rx_mode        = vxge_set_multicast,
3357         .ndo_do_ioctl           = vxge_ioctl,
3358         .ndo_set_mac_address    = vxge_set_mac_addr,
3359         .ndo_change_mtu         = vxge_change_mtu,
3360         .ndo_fix_features       = vxge_fix_features,
3361         .ndo_set_features       = vxge_set_features,
3362         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3363         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3364         .ndo_tx_timeout         = vxge_tx_watchdog,
3365 #ifdef CONFIG_NET_POLL_CONTROLLER
3366         .ndo_poll_controller    = vxge_netpoll,
3367 #endif
3368 };
3369
3370 static int vxge_device_register(struct __vxge_hw_device *hldev,
3371                                 struct vxge_config *config, int high_dma,
3372                                 int no_of_vpath, struct vxgedev **vdev_out)
3373 {
3374         struct net_device *ndev;
3375         enum vxge_hw_status status = VXGE_HW_OK;
3376         struct vxgedev *vdev;
3377         int ret = 0, no_of_queue = 1;
3378         u64 stat;
3379
3380         *vdev_out = NULL;
3381         if (config->tx_steering_type)
3382                 no_of_queue = no_of_vpath;
3383
3384         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3385                         no_of_queue);
3386         if (ndev == NULL) {
3387                 vxge_debug_init(
3388                         vxge_hw_device_trace_level_get(hldev),
3389                 "%s : device allocation failed", __func__);
3390                 ret = -ENODEV;
3391                 goto _out0;
3392         }
3393
3394         vxge_debug_entryexit(
3395                 vxge_hw_device_trace_level_get(hldev),
3396                 "%s: %s:%d  Entering...",
3397                 ndev->name, __func__, __LINE__);
3398
3399         vdev = netdev_priv(ndev);
3400         memset(vdev, 0, sizeof(struct vxgedev));
3401
3402         vdev->ndev = ndev;
3403         vdev->devh = hldev;
3404         vdev->pdev = hldev->pdev;
3405         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3406         vdev->rx_hwts = 0;
3407         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3408
3409         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3410
3411         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3412                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3413                 NETIF_F_TSO | NETIF_F_TSO6 |
3414                 NETIF_F_HW_VLAN_CTAG_TX;
3415         if (vdev->config.rth_steering != NO_STEERING)
3416                 ndev->hw_features |= NETIF_F_RXHASH;
3417
3418         ndev->features |= ndev->hw_features |
3419                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3420
3421
3422         ndev->netdev_ops = &vxge_netdev_ops;
3423
3424         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3425         INIT_WORK(&vdev->reset_task, vxge_reset);
3426
3427         vxge_initialize_ethtool_ops(ndev);
3428
3429         /* Allocate memory for vpath */
3430         vdev->vpaths = kcalloc(no_of_vpath, sizeof(struct vxge_vpath),
3431                                GFP_KERNEL);
3432         if (!vdev->vpaths) {
3433                 vxge_debug_init(VXGE_ERR,
3434                         "%s: vpath memory allocation failed",
3435                         vdev->ndev->name);
3436                 ret = -ENOMEM;
3437                 goto _out1;
3438         }
3439
3440         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3441                 "%s : checksumming enabled", __func__);
3442
3443         if (high_dma) {
3444                 ndev->features |= NETIF_F_HIGHDMA;
3445                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3446                         "%s : using High DMA", __func__);
3447         }
3448
3449         /* MTU range: 68 - 9600 */
3450         ndev->min_mtu = VXGE_HW_MIN_MTU;
3451         ndev->max_mtu = VXGE_HW_MAX_MTU;
3452
3453         ret = register_netdev(ndev);
3454         if (ret) {
3455                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3456                         "%s: %s : device registration failed!",
3457                         ndev->name, __func__);
3458                 goto _out2;
3459         }
3460
3461         /*  Set the factory defined MAC address initially */
3462         ndev->addr_len = ETH_ALEN;
3463
3464         /* Make Link state as off at this point, when the Link change
3465          * interrupt comes the state will be automatically changed to
3466          * the right state.
3467          */
3468         netif_carrier_off(ndev);
3469
3470         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3471                 "%s: Ethernet device registered",
3472                 ndev->name);
3473
3474         hldev->ndev = ndev;
3475         *vdev_out = vdev;
3476
3477         /* Resetting the Device stats */
3478         status = vxge_hw_mrpcim_stats_access(
3479                                 hldev,
3480                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3481                                 0,
3482                                 0,
3483                                 &stat);
3484
3485         if (status == VXGE_HW_ERR_PRIVILEGED_OPERATION)
3486                 vxge_debug_init(
3487                         vxge_hw_device_trace_level_get(hldev),
3488                         "%s: device stats clear returns"
3489                         "VXGE_HW_ERR_PRIVILEGED_OPERATION", ndev->name);
3490
3491         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3492                 "%s: %s:%d  Exiting...",
3493                 ndev->name, __func__, __LINE__);
3494
3495         return ret;
3496 _out2:
3497         kfree(vdev->vpaths);
3498 _out1:
3499         free_netdev(ndev);
3500 _out0:
3501         return ret;
3502 }
3503
3504 /*
3505  * vxge_device_unregister
3506  *
3507  * This function will unregister and free network device
3508  */
3509 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3510 {
3511         struct vxgedev *vdev;
3512         struct net_device *dev;
3513         char buf[IFNAMSIZ];
3514
3515         dev = hldev->ndev;
3516         vdev = netdev_priv(dev);
3517
3518         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3519                              __func__, __LINE__);
3520
3521         strlcpy(buf, dev->name, IFNAMSIZ);
3522
3523         flush_work(&vdev->reset_task);
3524
3525         /* in 2.6 will call stop() if device is up */
3526         unregister_netdev(dev);
3527
3528         kfree(vdev->vpaths);
3529
3530         /* we are safe to free it now */
3531         free_netdev(dev);
3532
3533         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3534                         buf);
3535         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3536                              __func__, __LINE__);
3537 }
3538
3539 /*
3540  * vxge_callback_crit_err
3541  *
3542  * This function is called by the alarm handler in interrupt context.
3543  * Driver must analyze it based on the event type.
3544  */
3545 static void
3546 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3547                         enum vxge_hw_event type, u64 vp_id)
3548 {
3549         struct net_device *dev = hldev->ndev;
3550         struct vxgedev *vdev = netdev_priv(dev);
3551         struct vxge_vpath *vpath = NULL;
3552         int vpath_idx;
3553
3554         vxge_debug_entryexit(vdev->level_trace,
3555                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3556
3557         /* Note: This event type should be used for device wide
3558          * indications only - Serious errors, Slot freeze and critical errors
3559          */
3560         vdev->cric_err_event = type;
3561
3562         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3563                 vpath = &vdev->vpaths[vpath_idx];
3564                 if (vpath->device_id == vp_id)
3565                         break;
3566         }
3567
3568         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3569                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3570                         vxge_debug_init(VXGE_ERR,
3571                                 "%s: Slot is frozen", vdev->ndev->name);
3572                 } else if (type == VXGE_HW_EVENT_SERR) {
3573                         vxge_debug_init(VXGE_ERR,
3574                                 "%s: Encountered Serious Error",
3575                                 vdev->ndev->name);
3576                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3577                         vxge_debug_init(VXGE_ERR,
3578                                 "%s: Encountered Critical Error",
3579                                 vdev->ndev->name);
3580         }
3581
3582         if ((type == VXGE_HW_EVENT_SERR) ||
3583                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3584                 if (unlikely(vdev->exec_mode))
3585                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3586         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3587                 vxge_hw_device_mask_all(hldev);
3588                 if (unlikely(vdev->exec_mode))
3589                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3590         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3591                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3592
3593                 if (unlikely(vdev->exec_mode))
3594                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3595                 else {
3596                         /* check if this vpath is already set for reset */
3597                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3598
3599                                 /* disable interrupts for this vpath */
3600                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3601
3602                                 /* stop the queue for this vpath */
3603                                 netif_tx_stop_queue(vpath->fifo.txq);
3604                         }
3605                 }
3606         }
3607
3608         vxge_debug_entryexit(vdev->level_trace,
3609                 "%s: %s:%d  Exiting...",
3610                 vdev->ndev->name, __func__, __LINE__);
3611 }
3612
3613 static void verify_bandwidth(void)
3614 {
3615         int i, band_width, total = 0, equal_priority = 0;
3616
3617         /* 1. If user enters 0 for some fifo, give equal priority to all */
3618         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3619                 if (bw_percentage[i] == 0) {
3620                         equal_priority = 1;
3621                         break;
3622                 }
3623         }
3624
3625         if (!equal_priority) {
3626                 /* 2. If sum exceeds 100, give equal priority to all */
3627                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3628                         if (bw_percentage[i] == 0xFF)
3629                                 break;
3630
3631                         total += bw_percentage[i];
3632                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3633                                 equal_priority = 1;
3634                                 break;
3635                         }
3636                 }
3637         }
3638
3639         if (!equal_priority) {
3640                 /* Is all the bandwidth consumed? */
3641                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3642                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3643                                 /* Split rest of bw equally among next VPs*/
3644                                 band_width =
3645                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3646                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3647                                 if (band_width < 2) /* min of 2% */
3648                                         equal_priority = 1;
3649                                 else {
3650                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3651                                                 i++)
3652                                                 bw_percentage[i] =
3653                                                         band_width;
3654                                 }
3655                         }
3656                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3657                         equal_priority = 1;
3658         }
3659
3660         if (equal_priority) {
3661                 vxge_debug_init(VXGE_ERR,
3662                         "%s: Assigning equal bandwidth to all the vpaths",
3663                         VXGE_DRIVER_NAME);
3664                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3665                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3666                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3667                         bw_percentage[i] = bw_percentage[0];
3668         }
3669 }
3670
3671 /*
3672  * Vpath configuration
3673  */
3674 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3675                               u64 vpath_mask, struct vxge_config *config_param)
3676 {
3677         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3678         u32 txdl_size, txdl_per_memblock;
3679
3680         temp = driver_config->vpath_per_dev;
3681         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3682                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3683                 /* No more CPU. Return vpath number as zero.*/
3684                 if (driver_config->g_no_cpus == -1)
3685                         return 0;
3686
3687                 if (!driver_config->g_no_cpus)
3688                         driver_config->g_no_cpus =
3689                                 netif_get_num_default_rss_queues();
3690
3691                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3692                 if (!driver_config->vpath_per_dev)
3693                         driver_config->vpath_per_dev = 1;
3694
3695                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3696                         if (!vxge_bVALn(vpath_mask, i, 1))
3697                                 continue;
3698                         else
3699                                 default_no_vpath++;
3700                 if (default_no_vpath < driver_config->vpath_per_dev)
3701                         driver_config->vpath_per_dev = default_no_vpath;
3702
3703                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3704                                 (driver_config->vpath_per_dev * 2);
3705                 if (driver_config->g_no_cpus <= 0)
3706                         driver_config->g_no_cpus = -1;
3707         }
3708
3709         if (driver_config->vpath_per_dev == 1) {
3710                 vxge_debug_ll_config(VXGE_TRACE,
3711                         "%s: Disable tx and rx steering, "
3712                         "as single vpath is configured", VXGE_DRIVER_NAME);
3713                 config_param->rth_steering = NO_STEERING;
3714                 config_param->tx_steering_type = NO_STEERING;
3715                 device_config->rth_en = 0;
3716         }
3717
3718         /* configure bandwidth */
3719         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3720                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3721
3722         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3723                 device_config->vp_config[i].vp_id = i;
3724                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3725                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3726                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3727                                 vxge_debug_ll_config(VXGE_TRACE,
3728                                         "%s: vpath: %d is not available",
3729                                         VXGE_DRIVER_NAME, i);
3730                                 continue;
3731                         } else {
3732                                 vxge_debug_ll_config(VXGE_TRACE,
3733                                         "%s: vpath: %d available",
3734                                         VXGE_DRIVER_NAME, i);
3735                                 no_of_vpaths++;
3736                         }
3737                 } else {
3738                         vxge_debug_ll_config(VXGE_TRACE,
3739                                 "%s: vpath: %d is not configured, "
3740                                 "max_config_vpath exceeded",
3741                                 VXGE_DRIVER_NAME, i);
3742                         break;
3743                 }
3744
3745                 /* Configure Tx fifo's */
3746                 device_config->vp_config[i].fifo.enable =
3747                                                 VXGE_HW_FIFO_ENABLE;
3748                 device_config->vp_config[i].fifo.max_frags =
3749                                 MAX_SKB_FRAGS + 1;
3750                 device_config->vp_config[i].fifo.memblock_size =
3751                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3752
3753                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3754                                 sizeof(struct vxge_hw_fifo_txd);
3755                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3756
3757                 device_config->vp_config[i].fifo.fifo_blocks =
3758                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3759
3760                 device_config->vp_config[i].fifo.intr =
3761                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3762
3763                 /* Configure tti properties */
3764                 device_config->vp_config[i].tti.intr_enable =
3765                                         VXGE_HW_TIM_INTR_ENABLE;
3766
3767                 device_config->vp_config[i].tti.btimer_val =
3768                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3769
3770                 device_config->vp_config[i].tti.timer_ac_en =
3771                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3772
3773                 /* For msi-x with napi (each vector has a handler of its own) -
3774                  * Set CI to OFF for all vpaths
3775                  */
3776                 device_config->vp_config[i].tti.timer_ci_en =
3777                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3778
3779                 device_config->vp_config[i].tti.timer_ri_en =
3780                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3781
3782                 device_config->vp_config[i].tti.util_sel =
3783                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3784
3785                 device_config->vp_config[i].tti.ltimer_val =
3786                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3787
3788                 device_config->vp_config[i].tti.rtimer_val =
3789                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3790
3791                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3792                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3793                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3794                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3795                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3796                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3797                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3798
3799                 /* Configure Rx rings */
3800                 device_config->vp_config[i].ring.enable  =
3801                                                 VXGE_HW_RING_ENABLE;
3802
3803                 device_config->vp_config[i].ring.ring_blocks  =
3804                                                 VXGE_HW_DEF_RING_BLOCKS;
3805
3806                 device_config->vp_config[i].ring.buffer_mode =
3807                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3808
3809                 device_config->vp_config[i].ring.rxds_limit  =
3810                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3811
3812                 device_config->vp_config[i].ring.scatter_mode =
3813                                         VXGE_HW_RING_SCATTER_MODE_A;
3814
3815                 /* Configure rti properties */
3816                 device_config->vp_config[i].rti.intr_enable =
3817                                         VXGE_HW_TIM_INTR_ENABLE;
3818
3819                 device_config->vp_config[i].rti.btimer_val =
3820                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3821
3822                 device_config->vp_config[i].rti.timer_ac_en =
3823                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3824
3825                 device_config->vp_config[i].rti.timer_ci_en =
3826                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3827
3828                 device_config->vp_config[i].rti.timer_ri_en =
3829                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3830
3831                 device_config->vp_config[i].rti.util_sel =
3832                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3833
3834                 device_config->vp_config[i].rti.urange_a =
3835                                                 RTI_RX_URANGE_A;
3836                 device_config->vp_config[i].rti.urange_b =
3837                                                 RTI_RX_URANGE_B;
3838                 device_config->vp_config[i].rti.urange_c =
3839                                                 RTI_RX_URANGE_C;
3840                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3841                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3842                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3843                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3844
3845                 device_config->vp_config[i].rti.rtimer_val =
3846                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3847
3848                 device_config->vp_config[i].rti.ltimer_val =
3849                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3850
3851                 device_config->vp_config[i].rpa_strip_vlan_tag =
3852                         vlan_tag_strip;
3853         }
3854
3855         driver_config->vpath_per_dev = temp;
3856         return no_of_vpaths;
3857 }
3858
3859 /* initialize device configuratrions */
3860 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3861                                     int *intr_type)
3862 {
3863         /* Used for CQRQ/SRQ. */
3864         device_config->dma_blockpool_initial =
3865                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3866
3867         device_config->dma_blockpool_max =
3868                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3869
3870         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3871                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3872
3873         if (!IS_ENABLED(CONFIG_PCI_MSI)) {
3874                 vxge_debug_init(VXGE_ERR,
3875                         "%s: This Kernel does not support "
3876                         "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3877                 *intr_type = INTA;
3878         }
3879
3880         /* Configure whether MSI-X or IRQL. */
3881         switch (*intr_type) {
3882         case INTA:
3883                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3884                 break;
3885
3886         case MSI_X:
3887                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3888                 break;
3889         }
3890
3891         /* Timer period between device poll */
3892         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3893
3894         /* Configure mac based steering. */
3895         device_config->rts_mac_en = addr_learn_en;
3896
3897         /* Configure Vpaths */
3898         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3899
3900         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3901                         __func__);
3902         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3903                         device_config->intr_mode);
3904         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3905                         device_config->device_poll_millis);
3906         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3907                         device_config->rth_en);
3908         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3909                         device_config->rth_it_type);
3910 }
3911
3912 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3913 {
3914         int i;
3915
3916         vxge_debug_init(VXGE_TRACE,
3917                 "%s: %d Vpath(s) opened",
3918                 vdev->ndev->name, vdev->no_of_vpath);
3919
3920         switch (vdev->config.intr_type) {
3921         case INTA:
3922                 vxge_debug_init(VXGE_TRACE,
3923                         "%s: Interrupt type INTA", vdev->ndev->name);
3924                 break;
3925
3926         case MSI_X:
3927                 vxge_debug_init(VXGE_TRACE,
3928                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3929                 break;
3930         }
3931
3932         if (vdev->config.rth_steering) {
3933                 vxge_debug_init(VXGE_TRACE,
3934                         "%s: RTH steering enabled for TCP_IPV4",
3935                         vdev->ndev->name);
3936         } else {
3937                 vxge_debug_init(VXGE_TRACE,
3938                         "%s: RTH steering disabled", vdev->ndev->name);
3939         }
3940
3941         switch (vdev->config.tx_steering_type) {
3942         case NO_STEERING:
3943                 vxge_debug_init(VXGE_TRACE,
3944                         "%s: Tx steering disabled", vdev->ndev->name);
3945                 break;
3946         case TX_PRIORITY_STEERING:
3947                 vxge_debug_init(VXGE_TRACE,
3948                         "%s: Unsupported tx steering option",
3949                         vdev->ndev->name);
3950                 vxge_debug_init(VXGE_TRACE,
3951                         "%s: Tx steering disabled", vdev->ndev->name);
3952                 vdev->config.tx_steering_type = 0;
3953                 break;
3954         case TX_VLAN_STEERING:
3955                 vxge_debug_init(VXGE_TRACE,
3956                         "%s: Unsupported tx steering option",
3957                         vdev->ndev->name);
3958                 vxge_debug_init(VXGE_TRACE,
3959                         "%s: Tx steering disabled", vdev->ndev->name);
3960                 vdev->config.tx_steering_type = 0;
3961                 break;
3962         case TX_MULTIQ_STEERING:
3963                 vxge_debug_init(VXGE_TRACE,
3964                         "%s: Tx multiqueue steering enabled",
3965                         vdev->ndev->name);
3966                 break;
3967         case TX_PORT_STEERING:
3968                 vxge_debug_init(VXGE_TRACE,
3969                         "%s: Tx port steering enabled",
3970                         vdev->ndev->name);
3971                 break;
3972         default:
3973                 vxge_debug_init(VXGE_ERR,
3974                         "%s: Unsupported tx steering type",
3975                         vdev->ndev->name);
3976                 vxge_debug_init(VXGE_TRACE,
3977                         "%s: Tx steering disabled", vdev->ndev->name);
3978                 vdev->config.tx_steering_type = 0;
3979         }
3980
3981         if (vdev->config.addr_learn_en)
3982                 vxge_debug_init(VXGE_TRACE,
3983                         "%s: MAC Address learning enabled", vdev->ndev->name);
3984
3985         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3986                 if (!vxge_bVALn(vpath_mask, i, 1))
3987                         continue;
3988                 vxge_debug_ll_config(VXGE_TRACE,
3989                         "%s: MTU size - %d", vdev->ndev->name,
3990                         ((vdev->devh))->
3991                                 config.vp_config[i].mtu);
3992                 vxge_debug_init(VXGE_TRACE,
3993                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3994                         ((vdev->devh))->
3995                                 config.vp_config[i].rpa_strip_vlan_tag
3996                         ? "Enabled" : "Disabled");
3997                 vxge_debug_ll_config(VXGE_TRACE,
3998                         "%s: Max frags : %d", vdev->ndev->name,
3999                         ((vdev->devh))->
4000                                 config.vp_config[i].fifo.max_frags);
4001                 break;
4002         }
4003 }
4004
4005 /**
4006  * vxge_pm_suspend - vxge power management suspend entry point
4007  * @dev_d: device pointer
4008  *
4009  */
4010 static int __maybe_unused vxge_pm_suspend(struct device *dev_d)
4011 {
4012         return -ENOSYS;
4013 }
4014 /**
4015  * vxge_pm_resume - vxge power management resume entry point
4016  * @dev_d: device pointer
4017  *
4018  */
4019 static int __maybe_unused vxge_pm_resume(struct device *dev_d)
4020 {
4021         return -ENOSYS;
4022 }
4023
4024 /**
4025  * vxge_io_error_detected - called when PCI error is detected
4026  * @pdev: Pointer to PCI device
4027  * @state: The current pci connection state
4028  *
4029  * This function is called after a PCI bus error affecting
4030  * this device has been detected.
4031  */
4032 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4033                                                 pci_channel_state_t state)
4034 {
4035         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4036         struct net_device *netdev = hldev->ndev;
4037
4038         netif_device_detach(netdev);
4039
4040         if (state == pci_channel_io_perm_failure)
4041                 return PCI_ERS_RESULT_DISCONNECT;
4042
4043         if (netif_running(netdev)) {
4044                 /* Bring down the card, while avoiding PCI I/O */
4045                 do_vxge_close(netdev, 0);
4046         }
4047
4048         pci_disable_device(pdev);
4049
4050         return PCI_ERS_RESULT_NEED_RESET;
4051 }
4052
4053 /**
4054  * vxge_io_slot_reset - called after the pci bus has been reset.
4055  * @pdev: Pointer to PCI device
4056  *
4057  * Restart the card from scratch, as if from a cold-boot.
4058  * At this point, the card has exprienced a hard reset,
4059  * followed by fixups by BIOS, and has its config space
4060  * set up identically to what it was at cold boot.
4061  */
4062 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4063 {
4064         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4065         struct net_device *netdev = hldev->ndev;
4066
4067         struct vxgedev *vdev = netdev_priv(netdev);
4068
4069         if (pci_enable_device(pdev)) {
4070                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4071                 return PCI_ERS_RESULT_DISCONNECT;
4072         }
4073
4074         pci_set_master(pdev);
4075         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4076
4077         return PCI_ERS_RESULT_RECOVERED;
4078 }
4079
4080 /**
4081  * vxge_io_resume - called when traffic can start flowing again.
4082  * @pdev: Pointer to PCI device
4083  *
4084  * This callback is called when the error recovery driver tells
4085  * us that its OK to resume normal operation.
4086  */
4087 static void vxge_io_resume(struct pci_dev *pdev)
4088 {
4089         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4090         struct net_device *netdev = hldev->ndev;
4091
4092         if (netif_running(netdev)) {
4093                 if (vxge_open(netdev)) {
4094                         netdev_err(netdev,
4095                                    "Can't bring device back up after reset\n");
4096                         return;
4097                 }
4098         }
4099
4100         netif_device_attach(netdev);
4101 }
4102
4103 static inline u32 vxge_get_num_vfs(u64 function_mode)
4104 {
4105         u32 num_functions = 0;
4106
4107         switch (function_mode) {
4108         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4109         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4110                 num_functions = 8;
4111                 break;
4112         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4113                 num_functions = 1;
4114                 break;
4115         case VXGE_HW_FUNCTION_MODE_SRIOV:
4116         case VXGE_HW_FUNCTION_MODE_MRIOV:
4117         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4118                 num_functions = 17;
4119                 break;
4120         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4121                 num_functions = 4;
4122                 break;
4123         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4124                 num_functions = 2;
4125                 break;
4126         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4127                 num_functions = 8; /* TODO */
4128                 break;
4129         }
4130         return num_functions;
4131 }
4132
4133 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4134 {
4135         struct __vxge_hw_device *hldev = vdev->devh;
4136         u32 maj, min, bld, cmaj, cmin, cbld;
4137         enum vxge_hw_status status;
4138         const struct firmware *fw;
4139         int ret;
4140
4141         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4142         if (ret) {
4143                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4144                                 VXGE_DRIVER_NAME, fw_name);
4145                 goto out;
4146         }
4147
4148         /* Load the new firmware onto the adapter */
4149         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4150         if (status != VXGE_HW_OK) {
4151                 vxge_debug_init(VXGE_ERR,
4152                                 "%s: FW image download to adapter failed '%s'.",
4153                                 VXGE_DRIVER_NAME, fw_name);
4154                 ret = -EIO;
4155                 goto out;
4156         }
4157
4158         /* Read the version of the new firmware */
4159         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4160         if (status != VXGE_HW_OK) {
4161                 vxge_debug_init(VXGE_ERR,
4162                                 "%s: Upgrade read version failed '%s'.",
4163                                 VXGE_DRIVER_NAME, fw_name);
4164                 ret = -EIO;
4165                 goto out;
4166         }
4167
4168         cmaj = vdev->config.device_hw_info.fw_version.major;
4169         cmin = vdev->config.device_hw_info.fw_version.minor;
4170         cbld = vdev->config.device_hw_info.fw_version.build;
4171         /* It's possible the version in /lib/firmware is not the latest version.
4172          * If so, we could get into a loop of trying to upgrade to the latest
4173          * and flashing the older version.
4174          */
4175         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4176             !override) {
4177                 ret = -EINVAL;
4178                 goto out;
4179         }
4180
4181         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4182                maj, min, bld);
4183
4184         /* Flash the adapter with the new firmware */
4185         status = vxge_hw_flash_fw(hldev);
4186         if (status != VXGE_HW_OK) {
4187                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4188                                 VXGE_DRIVER_NAME, fw_name);
4189                 ret = -EIO;
4190                 goto out;
4191         }
4192
4193         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4194                "hard reset before using, thus requiring a system reboot or a "
4195                "hotplug event.\n");
4196
4197 out:
4198         release_firmware(fw);
4199         return ret;
4200 }
4201
4202 static int vxge_probe_fw_update(struct vxgedev *vdev)
4203 {
4204         u32 maj, min, bld;
4205         int ret, gpxe = 0;
4206         char *fw_name;
4207
4208         maj = vdev->config.device_hw_info.fw_version.major;
4209         min = vdev->config.device_hw_info.fw_version.minor;
4210         bld = vdev->config.device_hw_info.fw_version.build;
4211
4212         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4213                 return 0;
4214
4215         /* Ignore the build number when determining if the current firmware is
4216          * "too new" to load the driver
4217          */
4218         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4219                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4220                                 "version, unable to load driver\n",
4221                                 VXGE_DRIVER_NAME);
4222                 return -EINVAL;
4223         }
4224
4225         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4226          * work with this driver.
4227          */
4228         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4229                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4230                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4231                 return -EINVAL;
4232         }
4233
4234         /* If file not specified, determine gPXE or not */
4235         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4236                 int i;
4237                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4238                         if (vdev->devh->eprom_versions[i]) {
4239                                 gpxe = 1;
4240                                 break;
4241                         }
4242         }
4243         if (gpxe)
4244                 fw_name = "vxge/X3fw-pxe.ncf";
4245         else
4246                 fw_name = "vxge/X3fw.ncf";
4247
4248         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4249         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4250          * probe, so ignore them
4251          */
4252         if (ret != -EINVAL && ret != -ENOENT)
4253                 return -EIO;
4254         else
4255                 ret = 0;
4256
4257         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4258             VXGE_FW_VER(maj, min, 0)) {
4259                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4260                                 " be used with this driver.",
4261                                 VXGE_DRIVER_NAME, maj, min, bld);
4262                 return -EINVAL;
4263         }
4264
4265         return ret;
4266 }
4267
4268 static int is_sriov_initialized(struct pci_dev *pdev)
4269 {
4270         int pos;
4271         u16 ctrl;
4272
4273         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4274         if (pos) {
4275                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4276                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4277                         return 1;
4278         }
4279         return 0;
4280 }
4281
4282 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4283         .link_up = vxge_callback_link_up,
4284         .link_down = vxge_callback_link_down,
4285         .crit_err = vxge_callback_crit_err,
4286 };
4287
4288 /**
4289  * vxge_probe
4290  * @pdev : structure containing the PCI related information of the device.
4291  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4292  * Description:
4293  * This function is called when a new PCI device gets detected and initializes
4294  * it.
4295  * Return value:
4296  * returns 0 on success and negative on failure.
4297  *
4298  */
4299 static int
4300 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4301 {
4302         struct __vxge_hw_device *hldev;
4303         enum vxge_hw_status status;
4304         int ret;
4305         int high_dma = 0;
4306         u64 vpath_mask = 0;
4307         struct vxgedev *vdev;
4308         struct vxge_config *ll_config = NULL;
4309         struct vxge_hw_device_config *device_config = NULL;
4310         struct vxge_hw_device_attr attr;
4311         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4312         u8 *macaddr;
4313         struct vxge_mac_addrs *entry;
4314         static int bus = -1, device = -1;
4315         u32 host_type;
4316         u8 new_device = 0;
4317         enum vxge_hw_status is_privileged;
4318         u32 function_mode;
4319         u32 num_vfs = 0;
4320
4321         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4322         attr.pdev = pdev;
4323
4324         /* In SRIOV-17 mode, functions of the same adapter
4325          * can be deployed on different buses
4326          */
4327         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4328             !pdev->is_virtfn)
4329                 new_device = 1;
4330
4331         bus = pdev->bus->number;
4332         device = PCI_SLOT(pdev->devfn);
4333
4334         if (new_device) {
4335                 if (driver_config->config_dev_cnt &&
4336                    (driver_config->config_dev_cnt !=
4337                         driver_config->total_dev_cnt))
4338                         vxge_debug_init(VXGE_ERR,
4339                                 "%s: Configured %d of %d devices",
4340                                 VXGE_DRIVER_NAME,
4341                                 driver_config->config_dev_cnt,
4342                                 driver_config->total_dev_cnt);
4343                 driver_config->config_dev_cnt = 0;
4344                 driver_config->total_dev_cnt = 0;
4345         }
4346
4347         /* Now making the CPU based no of vpath calculation
4348          * applicable for individual functions as well.
4349          */
4350         driver_config->g_no_cpus = 0;
4351         driver_config->vpath_per_dev = max_config_vpath;
4352
4353         driver_config->total_dev_cnt++;
4354         if (++driver_config->config_dev_cnt > max_config_dev) {
4355                 ret = 0;
4356                 goto _exit0;
4357         }
4358
4359         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4360                 GFP_KERNEL);
4361         if (!device_config) {
4362                 ret = -ENOMEM;
4363                 vxge_debug_init(VXGE_ERR,
4364                         "device_config : malloc failed %s %d",
4365                         __FILE__, __LINE__);
4366                 goto _exit0;
4367         }
4368
4369         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4370         if (!ll_config) {
4371                 ret = -ENOMEM;
4372                 vxge_debug_init(VXGE_ERR,
4373                         "device_config : malloc failed %s %d",
4374                         __FILE__, __LINE__);
4375                 goto _exit0;
4376         }
4377         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4378         ll_config->intr_type = MSI_X;
4379         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4380         ll_config->rth_steering = RTH_STEERING;
4381
4382         /* get the default configuration parameters */
4383         vxge_hw_device_config_default_get(device_config);
4384
4385         /* initialize configuration parameters */
4386         vxge_device_config_init(device_config, &ll_config->intr_type);
4387
4388         ret = pci_enable_device(pdev);
4389         if (ret) {
4390                 vxge_debug_init(VXGE_ERR,
4391                         "%s : can not enable PCI device", __func__);
4392                 goto _exit0;
4393         }
4394
4395         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
4396                 vxge_debug_ll_config(VXGE_TRACE,
4397                         "%s : using 64bit DMA", __func__);
4398
4399                 high_dma = 1;
4400
4401                 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
4402                         vxge_debug_init(VXGE_ERR,
4403                                 "%s : unable to obtain 64bit DMA for "
4404                                 "consistent allocations", __func__);
4405                         ret = -ENOMEM;
4406                         goto _exit1;
4407                 }
4408         } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
4409                 vxge_debug_ll_config(VXGE_TRACE,
4410                         "%s : using 32bit DMA", __func__);
4411         } else {
4412                 ret = -ENOMEM;
4413                 goto _exit1;
4414         }
4415
4416         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4417         if (ret) {
4418                 vxge_debug_init(VXGE_ERR,
4419                         "%s : request regions failed", __func__);
4420                 goto _exit1;
4421         }
4422
4423         pci_set_master(pdev);
4424
4425         attr.bar0 = pci_ioremap_bar(pdev, 0);
4426         if (!attr.bar0) {
4427                 vxge_debug_init(VXGE_ERR,
4428                         "%s : cannot remap io memory bar0", __func__);
4429                 ret = -ENODEV;
4430                 goto _exit2;
4431         }
4432         vxge_debug_ll_config(VXGE_TRACE,
4433                 "pci ioremap bar0: %p:0x%llx",
4434                 attr.bar0,
4435                 (unsigned long long)pci_resource_start(pdev, 0));
4436
4437         status = vxge_hw_device_hw_info_get(attr.bar0,
4438                         &ll_config->device_hw_info);
4439         if (status != VXGE_HW_OK) {
4440                 vxge_debug_init(VXGE_ERR,
4441                         "%s: Reading of hardware info failed."
4442                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4443                 ret = -EINVAL;
4444                 goto _exit3;
4445         }
4446
4447         vpath_mask = ll_config->device_hw_info.vpath_mask;
4448         if (vpath_mask == 0) {
4449                 vxge_debug_ll_config(VXGE_TRACE,
4450                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4451                 ret = -EINVAL;
4452                 goto _exit3;
4453         }
4454
4455         vxge_debug_ll_config(VXGE_TRACE,
4456                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4457                 (unsigned long long)vpath_mask);
4458
4459         function_mode = ll_config->device_hw_info.function_mode;
4460         host_type = ll_config->device_hw_info.host_type;
4461         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4462                 ll_config->device_hw_info.func_id);
4463
4464         /* Check how many vpaths are available */
4465         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4466                 if (!((vpath_mask) & vxge_mBIT(i)))
4467                         continue;
4468                 max_vpath_supported++;
4469         }
4470
4471         if (new_device)
4472                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4473
4474         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4475         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4476            (ll_config->intr_type != INTA)) {
4477                 ret = pci_enable_sriov(pdev, num_vfs);
4478                 if (ret)
4479                         vxge_debug_ll_config(VXGE_ERR,
4480                                 "Failed in enabling SRIOV mode: %d\n", ret);
4481                         /* No need to fail out, as an error here is non-fatal */
4482         }
4483
4484         /*
4485          * Configure vpaths and get driver configured number of vpaths
4486          * which is less than or equal to the maximum vpaths per function.
4487          */
4488         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4489         if (!no_of_vpath) {
4490                 vxge_debug_ll_config(VXGE_ERR,
4491                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4492                 ret = 0;
4493                 goto _exit3;
4494         }
4495
4496         /* Setting driver callbacks */
4497         attr.uld_callbacks = &vxge_callbacks;
4498
4499         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4500         if (status != VXGE_HW_OK) {
4501                 vxge_debug_init(VXGE_ERR,
4502                         "Failed to initialize device (%d)", status);
4503                 ret = -EINVAL;
4504                 goto _exit3;
4505         }
4506
4507         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4508                         ll_config->device_hw_info.fw_version.minor,
4509                         ll_config->device_hw_info.fw_version.build) >=
4510             VXGE_EPROM_FW_VER) {
4511                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4512
4513                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4514                 if (status != VXGE_HW_OK) {
4515                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4516                                         VXGE_DRIVER_NAME);
4517                         /* This is a non-fatal error, continue */
4518                 }
4519
4520                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4521                         hldev->eprom_versions[i] = img[i].version;
4522                         if (!img[i].is_valid)
4523                                 break;
4524                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4525                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4526                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4527                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4528                                         VXGE_EPROM_IMG_FIX(img[i].version),
4529                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4530                 }
4531         }
4532
4533         /* if FCS stripping is not disabled in MAC fail driver load */
4534         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4535         if (status != VXGE_HW_OK) {
4536                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4537                                 " failing driver load", VXGE_DRIVER_NAME);
4538                 ret = -EINVAL;
4539                 goto _exit4;
4540         }
4541
4542         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4543          * due to the fact that HWTS is using the FCS as the location of the
4544          * timestamp.  The HW FCS checking will still correctly determine if
4545          * there is a valid checksum, and the FCS is being removed by the driver
4546          * anyway.  So no functionality is being lost.  Since it is always
4547          * enabled, we now simply use the ioctl call to set whether or not the
4548          * driver should be paying attention to the HWTS.
4549          */
4550         if (is_privileged == VXGE_HW_OK) {
4551                 status = vxge_timestamp_config(hldev);
4552                 if (status != VXGE_HW_OK) {
4553                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4554                                         VXGE_DRIVER_NAME);
4555                         ret = -EFAULT;
4556                         goto _exit4;
4557                 }
4558         }
4559
4560         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4561
4562         /* set private device info */
4563         pci_set_drvdata(pdev, hldev);
4564
4565         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4566         ll_config->addr_learn_en = addr_learn_en;
4567         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4568         ll_config->rth_hash_type_tcpipv4 = 1;
4569         ll_config->rth_hash_type_ipv4 = 0;
4570         ll_config->rth_hash_type_tcpipv6 = 0;
4571         ll_config->rth_hash_type_ipv6 = 0;
4572         ll_config->rth_hash_type_tcpipv6ex = 0;
4573         ll_config->rth_hash_type_ipv6ex = 0;
4574         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4575         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4576         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4577
4578         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4579                                    &vdev);
4580         if (ret) {
4581                 ret = -EINVAL;
4582                 goto _exit4;
4583         }
4584
4585         ret = vxge_probe_fw_update(vdev);
4586         if (ret)
4587                 goto _exit5;
4588
4589         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4590         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4591                 vxge_hw_device_trace_level_get(hldev));
4592
4593         /* set private HW device info */
4594         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4595         vdev->bar0 = attr.bar0;
4596         vdev->max_vpath_supported = max_vpath_supported;
4597         vdev->no_of_vpath = no_of_vpath;
4598
4599         /* Virtual Path count */
4600         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4601                 if (!vxge_bVALn(vpath_mask, i, 1))
4602                         continue;
4603                 if (j >= vdev->no_of_vpath)
4604                         break;
4605
4606                 vdev->vpaths[j].is_configured = 1;
4607                 vdev->vpaths[j].device_id = i;
4608                 vdev->vpaths[j].ring.driver_id = j;
4609                 vdev->vpaths[j].vdev = vdev;
4610                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4611                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4612                                 ll_config->device_hw_info.mac_addrs[i],
4613                                 ETH_ALEN);
4614
4615                 /* Initialize the mac address list header */
4616                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4617
4618                 vdev->vpaths[j].mac_addr_cnt = 0;
4619                 vdev->vpaths[j].mcast_addr_cnt = 0;
4620                 j++;
4621         }
4622         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4623         vdev->max_config_port = max_config_port;
4624
4625         vdev->vlan_tag_strip = vlan_tag_strip;
4626
4627         /* map the hashing selector table to the configured vpaths */
4628         for (i = 0; i < vdev->no_of_vpath; i++)
4629                 vdev->vpath_selector[i] = vpath_selector[i];
4630
4631         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4632
4633         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4634         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4635         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4636
4637         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4638                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4639
4640         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4641                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4642
4643         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4644                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4645
4646         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4647                 vdev->ndev->name, macaddr);
4648
4649         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4650                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4651
4652         vxge_debug_init(VXGE_TRACE,
4653                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4654                 ll_config->device_hw_info.fw_version.version,
4655                 ll_config->device_hw_info.fw_date.date);
4656
4657         if (new_device) {
4658                 switch (ll_config->device_hw_info.function_mode) {
4659                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4660                         vxge_debug_init(VXGE_TRACE,
4661                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4662                 break;
4663                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4664                         vxge_debug_init(VXGE_TRACE,
4665                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4666                 break;
4667                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4668                         vxge_debug_init(VXGE_TRACE,
4669                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4670                 break;
4671                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4672                         vxge_debug_init(VXGE_TRACE,
4673                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4674                 break;
4675                 }
4676         }
4677
4678         vxge_print_parm(vdev, vpath_mask);
4679
4680         /* Store the fw version for ethttool option */
4681         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4682         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4683
4684         /* Copy the station mac address to the list */
4685         for (i = 0; i < vdev->no_of_vpath; i++) {
4686                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4687                 if (NULL == entry) {
4688                         vxge_debug_init(VXGE_ERR,
4689                                 "%s: mac_addr_list : memory allocation failed",
4690                                 vdev->ndev->name);
4691                         ret = -EPERM;
4692                         goto _exit6;
4693                 }
4694                 macaddr = (u8 *)&entry->macaddr;
4695                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4696                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4697                 vdev->vpaths[i].mac_addr_cnt = 1;
4698         }
4699
4700         kfree(device_config);
4701
4702         /*
4703          * INTA is shared in multi-function mode. This is unlike the INTA
4704          * implementation in MR mode, where each VH has its own INTA message.
4705          * - INTA is masked (disabled) as long as at least one function sets
4706          * its TITAN_MASK_ALL_INT.ALARM bit.
4707          * - INTA is unmasked (enabled) when all enabled functions have cleared
4708          * their own TITAN_MASK_ALL_INT.ALARM bit.
4709          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4710          * Though this driver leaves the top level interrupts unmasked while
4711          * leaving the required module interrupt bits masked on exit, there
4712          * could be a rougue driver around that does not follow this procedure
4713          * resulting in a failure to generate interrupts. The following code is
4714          * present to prevent such a failure.
4715          */
4716
4717         if (ll_config->device_hw_info.function_mode ==
4718                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4719                 if (vdev->config.intr_type == INTA)
4720                         vxge_hw_device_unmask_all(hldev);
4721
4722         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4723                 vdev->ndev->name, __func__, __LINE__);
4724
4725         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4726         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4727                 vxge_hw_device_trace_level_get(hldev));
4728
4729         kfree(ll_config);
4730         return 0;
4731
4732 _exit6:
4733         for (i = 0; i < vdev->no_of_vpath; i++)
4734                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4735 _exit5:
4736         vxge_device_unregister(hldev);
4737 _exit4:
4738         vxge_hw_device_terminate(hldev);
4739         pci_disable_sriov(pdev);
4740 _exit3:
4741         iounmap(attr.bar0);
4742 _exit2:
4743         pci_release_region(pdev, 0);
4744 _exit1:
4745         pci_disable_device(pdev);
4746 _exit0:
4747         kfree(ll_config);
4748         kfree(device_config);
4749         driver_config->config_dev_cnt--;
4750         driver_config->total_dev_cnt--;
4751         return ret;
4752 }
4753
4754 /**
4755  * vxge_rem_nic - Free the PCI device
4756  * @pdev: structure containing the PCI related information of the device.
4757  * Description: This function is called by the Pci subsystem to release a
4758  * PCI device and free up all resource held up by the device.
4759  */
4760 static void vxge_remove(struct pci_dev *pdev)
4761 {
4762         struct __vxge_hw_device *hldev;
4763         struct vxgedev *vdev;
4764         int i;
4765
4766         hldev = pci_get_drvdata(pdev);
4767         if (hldev == NULL)
4768                 return;
4769
4770         vdev = netdev_priv(hldev->ndev);
4771
4772         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4773         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4774                         __func__);
4775
4776         for (i = 0; i < vdev->no_of_vpath; i++)
4777                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4778
4779         vxge_device_unregister(hldev);
4780         /* Do not call pci_disable_sriov here, as it will break child devices */
4781         vxge_hw_device_terminate(hldev);
4782         iounmap(vdev->bar0);
4783         pci_release_region(pdev, 0);
4784         pci_disable_device(pdev);
4785         driver_config->config_dev_cnt--;
4786         driver_config->total_dev_cnt--;
4787
4788         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4789                         __func__, __LINE__);
4790         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4791                              __LINE__);
4792 }
4793
4794 static const struct pci_error_handlers vxge_err_handler = {
4795         .error_detected = vxge_io_error_detected,
4796         .slot_reset = vxge_io_slot_reset,
4797         .resume = vxge_io_resume,
4798 };
4799
4800 static SIMPLE_DEV_PM_OPS(vxge_pm_ops, vxge_pm_suspend, vxge_pm_resume);
4801
4802 static struct pci_driver vxge_driver = {
4803         .name = VXGE_DRIVER_NAME,
4804         .id_table = vxge_id_table,
4805         .probe = vxge_probe,
4806         .remove = vxge_remove,
4807         .driver.pm = &vxge_pm_ops,
4808         .err_handler = &vxge_err_handler,
4809 };
4810
4811 static int __init
4812 vxge_starter(void)
4813 {
4814         int ret = 0;
4815
4816         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4817         pr_info("Driver version: %s\n", DRV_VERSION);
4818
4819         verify_bandwidth();
4820
4821         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4822         if (!driver_config)
4823                 return -ENOMEM;
4824
4825         ret = pci_register_driver(&vxge_driver);
4826         if (ret) {
4827                 kfree(driver_config);
4828                 goto err;
4829         }
4830
4831         if (driver_config->config_dev_cnt &&
4832            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4833                 vxge_debug_init(VXGE_ERR,
4834                         "%s: Configured %d of %d devices",
4835                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4836                         driver_config->total_dev_cnt);
4837 err:
4838         return ret;
4839 }
4840
4841 static void __exit
4842 vxge_closer(void)
4843 {
4844         pci_unregister_driver(&vxge_driver);
4845         kfree(driver_config);
4846 }
4847 module_init(vxge_starter);
4848 module_exit(vxge_closer);