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 128
 102         struct sk_buff *completed[NR_SKB_COMPLETED];
 103         int more;
 104
 105         do {
 106                 more = 0;
 107                 skb_ptr = completed;
 108
 109                 if (__netif_tx_trylock(fifo->txq)) {
 110                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 111                                                 NR_SKB_COMPLETED, &more);
 112                         __netif_tx_unlock(fifo->txq);
 113                 }
 114
 115                 /* free SKBs */
 116                 for (temp = completed; temp != skb_ptr; temp++)
 117                         dev_kfree_skb_irq(*temp);
 118         } while (more);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 122 {
 123         int i;
 124
 125         /* Complete all transmits */
 126         for (i = 0; i < vdev->no_of_vpath; i++)
 127                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 128 }
 129
 130 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 131 {
 132         int i;
 133         struct vxge_ring *ring;
 134
 135         /* Complete all receives*/
 136         for (i = 0; i < vdev->no_of_vpath; i++) {
 137                 ring = &vdev->vpaths[i].ring;
 138                 vxge_hw_vpath_poll_rx(ring->handle);
 139         }
 140 }
 141
 142 /*
 143  * vxge_callback_link_up
 144  *
 145  * This function is called during interrupt context to notify link up state
 146  * change.
 147  */
 148 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 149 {
 150         struct net_device *dev = hldev->ndev;
 151         struct vxgedev *vdev = netdev_priv(dev);
 152
 153         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 154                 vdev->ndev->name, __func__, __LINE__);
 155         netdev_notice(vdev->ndev, "Link Up\n");
 156         vdev->stats.link_up++;
 157
 158         netif_carrier_on(vdev->ndev);
 159         netif_tx_wake_all_queues(vdev->ndev);
 160
 161         vxge_debug_entryexit(VXGE_TRACE,
 162                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 163 }
 164
 165 /*
 166  * vxge_callback_link_down
 167  *
 168  * This function is called during interrupt context to notify link down state
 169  * change.
 170  */
 171 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 172 {
 173         struct net_device *dev = hldev->ndev;
 174         struct vxgedev *vdev = netdev_priv(dev);
 175
 176         vxge_debug_entryexit(VXGE_TRACE,
 177                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 178         netdev_notice(vdev->ndev, "Link Down\n");
 179
 180         vdev->stats.link_down++;
 181         netif_carrier_off(vdev->ndev);
 182         netif_tx_stop_all_queues(vdev->ndev);
 183
 184         vxge_debug_entryexit(VXGE_TRACE,
 185                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 186 }
 187
 188 /*
 189  * vxge_rx_alloc
 190  *
 191  * Allocate SKB.
 192  */
 193 static struct sk_buff *
 194 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 195 {
 196         struct net_device    *dev;
 197         struct sk_buff       *skb;
 198         struct vxge_rx_priv *rx_priv;
 199
 200         dev = ring->ndev;
 201         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 202                 ring->ndev->name, __func__, __LINE__);
 203
 204         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 205
 206         /* try to allocate skb first. this one may fail */
 207         skb = netdev_alloc_skb(dev, skb_size +
 208         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 209         if (skb == NULL) {
 210                 vxge_debug_mem(VXGE_ERR,
 211                         "%s: out of memory to allocate SKB", dev->name);
 212                 ring->stats.skb_alloc_fail++;
 213                 return NULL;
 214         }
 215
 216         vxge_debug_mem(VXGE_TRACE,
 217                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 218                 __func__, __LINE__, skb);
 219
 220         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 221
 222         rx_priv->skb = skb;
 223         rx_priv->skb_data = NULL;
 224         rx_priv->data_size = skb_size;
 225         vxge_debug_entryexit(VXGE_TRACE,
 226                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 227
 228         return skb;
 229 }
 230
 231 /*
 232  * vxge_rx_map
 233  */
 234 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 235 {
 236         struct vxge_rx_priv *rx_priv;
 237         dma_addr_t dma_addr;
 238
 239         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 240                 ring->ndev->name, __func__, __LINE__);
 241         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 242
 243         rx_priv->skb_data = rx_priv->skb->data;
 244         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 245                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 246
 247         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 248                 ring->stats.pci_map_fail++;
 249                 return -EIO;
 250         }
 251         vxge_debug_mem(VXGE_TRACE,
 252                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 253                 ring->ndev->name, __func__, __LINE__,
 254                 (unsigned long long)dma_addr);
 255         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 256
 257         rx_priv->data_dma = dma_addr;
 258         vxge_debug_entryexit(VXGE_TRACE,
 259                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * vxge_rx_initial_replenish
 266  * Allocation of RxD as an initial replenish procedure.
 267  */
 268 static enum vxge_hw_status
 269 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 270 {
 271         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 272         struct vxge_rx_priv *rx_priv;
 273
 274         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 275                 ring->ndev->name, __func__, __LINE__);
 276         if (vxge_rx_alloc(dtrh, ring,
 277                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 278                 return VXGE_HW_FAIL;
 279
 280         if (vxge_rx_map(dtrh, ring)) {
 281                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282                 dev_kfree_skb(rx_priv->skb);
 283
 284                 return VXGE_HW_FAIL;
 285         }
 286         vxge_debug_entryexit(VXGE_TRACE,
 287                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 288
 289         return VXGE_HW_OK;
 290 }
 291
 292 static inline void
 293 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 294                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 295 {
 296
 297         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 298                         ring->ndev->name, __func__, __LINE__);
 299         skb_record_rx_queue(skb, ring->driver_id);
 300         skb->protocol = eth_type_trans(skb, ring->ndev);
 301
 302         u64_stats_update_begin(&ring->stats.syncp);
 303         ring->stats.rx_frms++;
 304         ring->stats.rx_bytes += pkt_length;
 305
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ring->stats.rx_mcast++;
 308         u64_stats_update_end(&ring->stats.syncp);
 309
 310         vxge_debug_rx(VXGE_TRACE,
 311                 "%s: %s:%d  skb protocol = %d",
 312                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 313
 314         if (ext_info->vlan &&
 315             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 316                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 317         napi_gro_receive(ring->napi_p, skb);
 318
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321 }
 322
 323 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 324                                     struct vxge_rx_priv *rx_priv)
 325 {
 326         pci_dma_sync_single_for_device(ring->pdev,
 327                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 328
 329         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 330         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 331 }
 332
 333 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 334                              void *post_dtr, struct __vxge_hw_ring *ringh)
 335 {
 336         int dtr_count = *dtr_cnt;
 337         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 338                 if (*first_dtr)
 339                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 340                 *first_dtr = post_dtr;
 341         } else
 342                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 343         dtr_count++;
 344         *dtr_cnt = dtr_count;
 345 }
 346
 347 /*
 348  * vxge_rx_1b_compl
 349  *
 350  * If the interrupt is because of a received frame or if the receive ring
 351  * contains fresh as yet un-processed frames, this function is called.
 352  */
 353 static enum vxge_hw_status
 354 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 355                  u8 t_code, void *userdata)
 356 {
 357         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 358         struct net_device *dev = ring->ndev;
 359         unsigned int dma_sizes;
 360         void *first_dtr = NULL;
 361         int dtr_cnt = 0;
 362         int data_size;
 363         dma_addr_t data_dma;
 364         int pkt_length;
 365         struct sk_buff *skb;
 366         struct vxge_rx_priv *rx_priv;
 367         struct vxge_hw_ring_rxd_info ext_info;
 368         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 369                 ring->ndev->name, __func__, __LINE__);
 370
 371         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                                         pci_unmap_single(ring->pdev, data_dma,
 429                                                 data_size, PCI_DMA_FROMDEVICE);
 430
 431                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 432                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 433                                                 ringh);
 434                                 } else {
 435                                         dev_kfree_skb(rx_priv->skb);
 436                                         rx_priv->skb = skb;
 437                                         rx_priv->data_size = data_size;
 438                                         vxge_re_pre_post(dtr, ring, rx_priv);
 439
 440                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 441                                                 ringh);
 442                                         ring->stats.rx_dropped++;
 443                                         break;
 444                                 }
 445                         } else {
 446                                 vxge_re_pre_post(dtr, ring, rx_priv);
 447
 448                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 449                                 ring->stats.rx_dropped++;
 450                                 break;
 451                         }
 452                 } else {
 453                         struct sk_buff *skb_up;
 454
 455                         skb_up = netdev_alloc_skb(dev, pkt_length +
 456                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 457                         if (skb_up != NULL) {
 458                                 skb_reserve(skb_up,
 459                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 460
 461                                 pci_dma_sync_single_for_cpu(ring->pdev,
 462                                         data_dma, data_size,
 463                                         PCI_DMA_FROMDEVICE);
 464
 465                                 vxge_debug_mem(VXGE_TRACE,
 466                                         "%s: %s:%d  skb_up = %p",
 467                                         ring->ndev->name, __func__,
 468                                         __LINE__, skb);
 469                                 memcpy(skb_up->data, skb->data, pkt_length);
 470
 471                                 vxge_re_pre_post(dtr, ring, rx_priv);
 472
 473                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 474                                         ringh);
 475                                 /* will netif_rx small SKB instead */
 476                                 skb = skb_up;
 477                                 skb_put(skb, pkt_length);
 478                         } else {
 479                                 vxge_re_pre_post(dtr, ring, rx_priv);
 480
 481                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 482                                 vxge_debug_rx(VXGE_ERR,
 483                                         "%s: vxge_rx_1b_compl: out of "
 484                                         "memory", dev->name);
 485                                 ring->stats.skb_alloc_fail++;
 486                                 break;
 487                         }
 488                 }
 489
 490                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 491                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 492                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 493                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 494                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 495                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 496                 else
 497                         skb_checksum_none_assert(skb);
 498
 499
 500                 if (ring->rx_hwts) {
 501                         struct skb_shared_hwtstamps *skb_hwts;
 502                         u32 ns = *(u32 *)(skb->head + pkt_length);
 503
 504                         skb_hwts = skb_hwtstamps(skb);
 505                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 506                 }
 507
 508                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 509                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 510                  * if rss is disabled/enabled, so key off of that.
 511                  */
 512                 if (ext_info.rth_value)
 513                         skb_set_hash(skb, ext_info.rth_value,
 514                                      PKT_HASH_TYPE_L3);
 515
 516                 vxge_rx_complete(ring, skb, ext_info.vlan,
 517                         pkt_length, &ext_info);
 518
 519                 ring->budget--;
 520                 ring->pkts_processed++;
 521                 if (!ring->budget)
 522                         break;
 523
 524         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 525                 &t_code) == VXGE_HW_OK);
 526
 527         if (first_dtr)
 528                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 529
 530 out:
 531         vxge_debug_entryexit(VXGE_TRACE,
 532                                 "%s:%d  Exiting...",
 533                                 __func__, __LINE__);
 534         return VXGE_HW_OK;
 535 }
 536
 537 /*
 538  * vxge_xmit_compl
 539  *
 540  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 541  * this function is called. It identifies the last TxD whose buffer was
 542  * freed and frees all skbs whose data have already DMA'ed into the NICs
 543  * internal memory.
 544  */
 545 static enum vxge_hw_status
 546 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 547                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 548                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 549 {
 550         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 551         struct sk_buff *skb, **done_skb = *skb_ptr;
 552         int pkt_cnt = 0;
 553
 554         vxge_debug_entryexit(VXGE_TRACE,
 555                 "%s:%d Entered....", __func__, __LINE__);
 556
 557         do {
 558                 int frg_cnt;
 559                 skb_frag_t *frag;
 560                 int i = 0, j;
 561                 struct vxge_tx_priv *txd_priv =
 562                         vxge_hw_fifo_txdl_private_get(dtr);
 563
 564                 skb = txd_priv->skb;
 565                 frg_cnt = skb_shinfo(skb)->nr_frags;
 566                 frag = &skb_shinfo(skb)->frags[0];
 567
 568                 vxge_debug_tx(VXGE_TRACE,
 569                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 570                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 571                                 __LINE__, fifo_hw, dtr, t_code);
 572                 /* check skb validity */
 573                 vxge_assert(skb);
 574                 vxge_debug_tx(VXGE_TRACE,
 575                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 576                         fifo->ndev->name, __func__, __LINE__,
 577                         skb, txd_priv, frg_cnt);
 578                 if (unlikely(t_code)) {
 579                         fifo->stats.tx_errors++;
 580                         vxge_debug_tx(VXGE_ERR,
 581                                 "%s: tx: dtr %p completed due to "
 582                                 "error t_code %01x", fifo->ndev->name,
 583                                 dtr, t_code);
 584                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 585                 }
 586
 587                 /*  for unfragmented skb */
 588                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 589                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 590
 591                 for (j = 0; j < frg_cnt; j++) {
 592                         pci_unmap_page(fifo->pdev,
 593                                         txd_priv->dma_buffers[i++],
 594                                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 595                         frag += 1;
 596                 }
 597
 598                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 599
 600                 /* Updating the statistics block */
 601                 u64_stats_update_begin(&fifo->stats.syncp);
 602                 fifo->stats.tx_frms++;
 603                 fifo->stats.tx_bytes += skb->len;
 604                 u64_stats_update_end(&fifo->stats.syncp);
 605
 606                 *done_skb++ = skb;
 607
 608                 if (--nr_skb <= 0) {
 609                         *more = 1;
 610                         break;
 611                 }
 612
 613                 pkt_cnt++;
 614                 if (pkt_cnt > fifo->indicate_max_pkts)
 615                         break;
 616
 617         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 618                                 &dtr, &t_code) == VXGE_HW_OK);
 619
 620         *skb_ptr = done_skb;
 621         if (netif_tx_queue_stopped(fifo->txq))
 622                 netif_tx_wake_queue(fifo->txq);
 623
 624         vxge_debug_entryexit(VXGE_TRACE,
 625                                 "%s: %s:%d  Exiting...",
 626                                 fifo->ndev->name, __func__, __LINE__);
 627         return VXGE_HW_OK;
 628 }
 629
 630 /* select a vpath to transmit the packet */
 631 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 632 {
 633         u16 queue_len, counter = 0;
 634         if (skb->protocol == htons(ETH_P_IP)) {
 635                 struct iphdr *ip;
 636                 struct tcphdr *th;
 637
 638                 ip = ip_hdr(skb);
 639
 640                 if (!ip_is_fragment(ip)) {
 641                         th = (struct tcphdr *)(((unsigned char *)ip) +
 642                                         ip->ihl*4);
 643
 644                         queue_len = vdev->no_of_vpath;
 645                         counter = (ntohs(th->source) +
 646                                 ntohs(th->dest)) &
 647                                 vdev->vpath_selector[queue_len - 1];
 648                         if (counter >= queue_len)
 649                                 counter = queue_len - 1;
 650                 }
 651         }
 652         return counter;
 653 }
 654
 655 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 656         struct vxge_vpath *vpath, u64 del_mac)
 657 {
 658         struct list_head *entry, *next;
 659         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 660                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 661                         return TRUE;
 662         }
 663         return FALSE;
 664 }
 665
 666 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 667 {
 668         struct vxge_mac_addrs *new_mac_entry;
 669         u8 *mac_address = NULL;
 670
 671         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 672                 return TRUE;
 673
 674         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 675         if (!new_mac_entry) {
 676                 vxge_debug_mem(VXGE_ERR,
 677                         "%s: memory allocation failed",
 678                         VXGE_DRIVER_NAME);
 679                 return FALSE;
 680         }
 681
 682         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 683
 684         /* Copy the new mac address to the list */
 685         mac_address = (u8 *)&new_mac_entry->macaddr;
 686         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 687
 688         new_mac_entry->state = mac->state;
 689         vpath->mac_addr_cnt++;
 690
 691         if (is_multicast_ether_addr(mac->macaddr))
 692                 vpath->mcast_addr_cnt++;
 693
 694         return TRUE;
 695 }
 696
 697 /* Add a mac address to DA table */
 698 static enum vxge_hw_status
 699 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 700 {
 701         enum vxge_hw_status status = VXGE_HW_OK;
 702         struct vxge_vpath *vpath;
 703         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 704
 705         if (is_multicast_ether_addr(mac->macaddr))
 706                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 707         else
 708                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 709
 710         vpath = &vdev->vpaths[mac->vpath_no];
 711         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 712                                                 mac->macmask, duplicate_mode);
 713         if (status != VXGE_HW_OK) {
 714                 vxge_debug_init(VXGE_ERR,
 715                         "DA config add entry failed for vpath:%d",
 716                         vpath->device_id);
 717         } else
 718                 if (FALSE == vxge_mac_list_add(vpath, mac))
 719                         status = -EPERM;
 720
 721         return status;
 722 }
 723
 724 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 725 {
 726         struct macInfo mac_info;
 727         u8 *mac_address = NULL;
 728         u64 mac_addr = 0, vpath_vector = 0;
 729         int vpath_idx = 0;
 730         enum vxge_hw_status status = VXGE_HW_OK;
 731         struct vxge_vpath *vpath = NULL;
 732
 733         mac_address = (u8 *)&mac_addr;
 734         memcpy(mac_address, mac_header, ETH_ALEN);
 735
 736         /* Is this mac address already in the list? */
 737         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 738                 vpath = &vdev->vpaths[vpath_idx];
 739                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 740                         return vpath_idx;
 741         }
 742
 743         memset(&mac_info, 0, sizeof(struct macInfo));
 744         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 745
 746         /* Any vpath has room to add mac address to its da table? */
 747         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 748                 vpath = &vdev->vpaths[vpath_idx];
 749                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 750                         /* Add this mac address to this vpath */
 751                         mac_info.vpath_no = vpath_idx;
 752                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 753                         status = vxge_add_mac_addr(vdev, &mac_info);
 754                         if (status != VXGE_HW_OK)
 755                                 return -EPERM;
 756                         return vpath_idx;
 757                 }
 758         }
 759
 760         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 761         vpath_idx = 0;
 762         mac_info.vpath_no = vpath_idx;
 763         /* Is the first vpath already selected as catch-basin ? */
 764         vpath = &vdev->vpaths[vpath_idx];
 765         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 766                 /* Add this mac address to this vpath */
 767                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 768                         return -EPERM;
 769                 return vpath_idx;
 770         }
 771
 772         /* Select first vpath as catch-basin */
 773         vpath_vector = vxge_mBIT(vpath->device_id);
 774         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 775                                 vxge_hw_mgmt_reg_type_mrpcim,
 776                                 0,
 777                                 (ulong)offsetof(
 778                                         struct vxge_hw_mrpcim_reg,
 779                                         rts_mgr_cbasin_cfg),
 780                                 vpath_vector);
 781         if (status != VXGE_HW_OK) {
 782                 vxge_debug_tx(VXGE_ERR,
 783                         "%s: Unable to set the vpath-%d in catch-basin mode",
 784                         VXGE_DRIVER_NAME, vpath->device_id);
 785                 return -EPERM;
 786         }
 787
 788         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 789                 return -EPERM;
 790
 791         return vpath_idx;
 792 }
 793
 794 /**
 795  * vxge_xmit
 796  * @skb : the socket buffer containing the Tx data.
 797  * @dev : device pointer.
 798  *
 799  * This function is the Tx entry point of the driver. Neterion NIC supports
 800  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 801 */
 802 static netdev_tx_t
 803 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 804 {
 805         struct vxge_fifo *fifo = NULL;
 806         void *dtr_priv;
 807         void *dtr = NULL;
 808         struct vxgedev *vdev = NULL;
 809         enum vxge_hw_status status;
 810         int frg_cnt, first_frg_len;
 811         skb_frag_t *frag;
 812         int i = 0, j = 0, avail;
 813         u64 dma_pointer;
 814         struct vxge_tx_priv *txdl_priv = NULL;
 815         struct __vxge_hw_fifo *fifo_hw;
 816         int offload_type;
 817         int vpath_no = 0;
 818
 819         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 820                         dev->name, __func__, __LINE__);
 821
 822         /* A buffer with no data will be dropped */
 823         if (unlikely(skb->len <= 0)) {
 824                 vxge_debug_tx(VXGE_ERR,
 825                         "%s: Buffer has no data..", dev->name);
 826                 dev_kfree_skb_any(skb);
 827                 return NETDEV_TX_OK;
 828         }
 829
 830         vdev = netdev_priv(dev);
 831
 832         if (unlikely(!is_vxge_card_up(vdev))) {
 833                 vxge_debug_tx(VXGE_ERR,
 834                         "%s: vdev not initialized", dev->name);
 835                 dev_kfree_skb_any(skb);
 836                 return NETDEV_TX_OK;
 837         }
 838
 839         if (vdev->config.addr_learn_en) {
 840                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 841                 if (vpath_no == -EPERM) {
 842                         vxge_debug_tx(VXGE_ERR,
 843                                 "%s: Failed to store the mac address",
 844                                 dev->name);
 845                         dev_kfree_skb_any(skb);
 846                         return NETDEV_TX_OK;
 847                 }
 848         }
 849
 850         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 851                 vpath_no = skb_get_queue_mapping(skb);
 852         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 853                 vpath_no = vxge_get_vpath_no(vdev, skb);
 854
 855         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 856
 857         if (vpath_no >= vdev->no_of_vpath)
 858                 vpath_no = 0;
 859
 860         fifo = &vdev->vpaths[vpath_no].fifo;
 861         fifo_hw = fifo->handle;
 862
 863         if (netif_tx_queue_stopped(fifo->txq))
 864                 return NETDEV_TX_BUSY;
 865
 866         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 867         if (avail == 0) {
 868                 vxge_debug_tx(VXGE_ERR,
 869                         "%s: No free TXDs available", dev->name);
 870                 fifo->stats.txd_not_free++;
 871                 goto _exit0;
 872         }
 873
 874         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 875          * completion will resume the queue.
 876          */
 877         if (avail == 1)
 878                 netif_tx_stop_queue(fifo->txq);
 879
 880         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 881         if (unlikely(status != VXGE_HW_OK)) {
 882                 vxge_debug_tx(VXGE_ERR,
 883                    "%s: Out of descriptors .", dev->name);
 884                 fifo->stats.txd_out_of_desc++;
 885                 goto _exit0;
 886         }
 887
 888         vxge_debug_tx(VXGE_TRACE,
 889                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 890                 dev->name, __func__, __LINE__,
 891                 fifo_hw, dtr, dtr_priv);
 892
 893         if (skb_vlan_tag_present(skb)) {
 894                 u16 vlan_tag = skb_vlan_tag_get(skb);
 895                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 896         }
 897
 898         first_frg_len = skb_headlen(skb);
 899
 900         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 901                                 PCI_DMA_TODEVICE);
 902
 903         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 904                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 905                 fifo->stats.pci_map_fail++;
 906                 goto _exit0;
 907         }
 908
 909         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 910         txdl_priv->skb = skb;
 911         txdl_priv->dma_buffers[j] = dma_pointer;
 912
 913         frg_cnt = skb_shinfo(skb)->nr_frags;
 914         vxge_debug_tx(VXGE_TRACE,
 915                         "%s: %s:%d skb = %p txdl_priv = %p "
 916                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 917                         __func__, __LINE__, skb, txdl_priv,
 918                         frg_cnt, (unsigned long long)dma_pointer);
 919
 920         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 921                 first_frg_len);
 922
 923         frag = &skb_shinfo(skb)->frags[0];
 924         for (i = 0; i < frg_cnt; i++) {
 925                 /* ignore 0 length fragment */
 926                 if (!skb_frag_size(frag))
 927                         continue;
 928
 929                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 930                                                     0, skb_frag_size(frag),
 931                                                     DMA_TO_DEVICE);
 932
 933                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 934                         goto _exit2;
 935                 vxge_debug_tx(VXGE_TRACE,
 936                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 937                                 dev->name, __func__, __LINE__, i,
 938                                 (unsigned long long)dma_pointer);
 939
 940                 txdl_priv->dma_buffers[j] = dma_pointer;
 941                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 942                                         skb_frag_size(frag));
 943                 frag += 1;
 944         }
 945
 946         offload_type = vxge_offload_type(skb);
 947
 948         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 949                 int mss = vxge_tcp_mss(skb);
 950                 if (mss) {
 951                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 952                                 dev->name, __func__, __LINE__, mss);
 953                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 954                 } else {
 955                         vxge_assert(skb->len <=
 956                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 957                         vxge_assert(0);
 958                         goto _exit1;
 959                 }
 960         }
 961
 962         if (skb->ip_summed == CHECKSUM_PARTIAL)
 963                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 964                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 965                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 966                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 967
 968         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 969
 970         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 971                 dev->name, __func__, __LINE__);
 972         return NETDEV_TX_OK;
 973
 974 _exit2:
 975         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 976 _exit1:
 977         j = 0;
 978         frag = &skb_shinfo(skb)->frags[0];
 979
 980         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 981                         skb_headlen(skb), PCI_DMA_TODEVICE);
 982
 983         for (; j < i; j++) {
 984                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 985                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 986                 frag += 1;
 987         }
 988
 989         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 990 _exit0:
 991         netif_tx_stop_queue(fifo->txq);
 992         dev_kfree_skb_any(skb);
 993
 994         return NETDEV_TX_OK;
 995 }
 996
 997 /*
 998  * vxge_rx_term
 999  *
1000  * Function will be called by hw function to abort all outstanding receive
1001  * descriptors.
1002  */
1003 static void
1004 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1005 {
1006         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1007         struct vxge_rx_priv *rx_priv =
1008                 vxge_hw_ring_rxd_private_get(dtrh);
1009
1010         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1011                         ring->ndev->name, __func__, __LINE__);
1012         if (state != VXGE_HW_RXD_STATE_POSTED)
1013                 return;
1014
1015         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1016                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1017
1018         dev_kfree_skb(rx_priv->skb);
1019         rx_priv->skb_data = NULL;
1020
1021         vxge_debug_entryexit(VXGE_TRACE,
1022                 "%s: %s:%d  Exiting...",
1023                 ring->ndev->name, __func__, __LINE__);
1024 }
1025
1026 /*
1027  * vxge_tx_term
1028  *
1029  * Function will be called to abort all outstanding tx descriptors
1030  */
1031 static void
1032 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1033 {
1034         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1035         skb_frag_t *frag;
1036         int i = 0, j, frg_cnt;
1037         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1038         struct sk_buff *skb = txd_priv->skb;
1039
1040         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1041
1042         if (state != VXGE_HW_TXDL_STATE_POSTED)
1043                 return;
1044
1045         /* check skb validity */
1046         vxge_assert(skb);
1047         frg_cnt = skb_shinfo(skb)->nr_frags;
1048         frag = &skb_shinfo(skb)->frags[0];
1049
1050         /*  for unfragmented skb */
1051         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1052                 skb_headlen(skb), PCI_DMA_TODEVICE);
1053
1054         for (j = 0; j < frg_cnt; j++) {
1055                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1056                                skb_frag_size(frag), PCI_DMA_TODEVICE);
1057                 frag += 1;
1058         }
1059
1060         dev_kfree_skb(skb);
1061
1062         vxge_debug_entryexit(VXGE_TRACE,
1063                 "%s:%d  Exiting...", __func__, __LINE__);
1064 }
1065
1066 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1067 {
1068         struct list_head *entry, *next;
1069         u64 del_mac = 0;
1070         u8 *mac_address = (u8 *) (&del_mac);
1071
1072         /* Copy the mac address to delete from the list */
1073         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1074
1075         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1076                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1077                         list_del(entry);
1078                         kfree((struct vxge_mac_addrs *)entry);
1079                         vpath->mac_addr_cnt--;
1080
1081                         if (is_multicast_ether_addr(mac->macaddr))
1082                                 vpath->mcast_addr_cnt--;
1083                         return TRUE;
1084                 }
1085         }
1086
1087         return FALSE;
1088 }
1089
1090 /* delete a mac address from DA table */
1091 static enum vxge_hw_status
1092 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1093 {
1094         enum vxge_hw_status status = VXGE_HW_OK;
1095         struct vxge_vpath *vpath;
1096
1097         vpath = &vdev->vpaths[mac->vpath_no];
1098         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1099                                                 mac->macmask);
1100         if (status != VXGE_HW_OK) {
1101                 vxge_debug_init(VXGE_ERR,
1102                         "DA config delete entry failed for vpath:%d",
1103                         vpath->device_id);
1104         } else
1105                 vxge_mac_list_del(vpath, mac);
1106         return status;
1107 }
1108
1109 /**
1110  * vxge_set_multicast
1111  * @dev: pointer to the device structure
1112  *
1113  * Entry point for multicast address enable/disable
1114  * This function is a driver entry point which gets called by the kernel
1115  * whenever multicast addresses must be enabled/disabled. This also gets
1116  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1117  * determine, if multicast address must be enabled or if promiscuous mode
1118  * is to be disabled etc.
1119  */
1120 static void vxge_set_multicast(struct net_device *dev)
1121 {
1122         struct netdev_hw_addr *ha;
1123         struct vxgedev *vdev;
1124         int i, mcast_cnt = 0;
1125         struct vxge_vpath *vpath;
1126         enum vxge_hw_status status = VXGE_HW_OK;
1127         struct macInfo mac_info;
1128         int vpath_idx = 0;
1129         struct vxge_mac_addrs *mac_entry;
1130         struct list_head *list_head;
1131         struct list_head *entry, *next;
1132         u8 *mac_address = NULL;
1133
1134         vxge_debug_entryexit(VXGE_TRACE,
1135                 "%s:%d", __func__, __LINE__);
1136
1137         vdev = netdev_priv(dev);
1138
1139         if (unlikely(!is_vxge_card_up(vdev)))
1140                 return;
1141
1142         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1143                 for (i = 0; i < vdev->no_of_vpath; i++) {
1144                         vpath = &vdev->vpaths[i];
1145                         vxge_assert(vpath->is_open);
1146                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1147                         if (status != VXGE_HW_OK)
1148                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1149                                                 "multicast, status %d", status);
1150                         vdev->all_multi_flg = 1;
1151                 }
1152         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1153                 for (i = 0; i < vdev->no_of_vpath; i++) {
1154                         vpath = &vdev->vpaths[i];
1155                         vxge_assert(vpath->is_open);
1156                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1157                         if (status != VXGE_HW_OK)
1158                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1159                                                 "multicast, status %d", status);
1160                         vdev->all_multi_flg = 0;
1161                 }
1162         }
1163
1164
1165         if (!vdev->config.addr_learn_en) {
1166                 for (i = 0; i < vdev->no_of_vpath; i++) {
1167                         vpath = &vdev->vpaths[i];
1168                         vxge_assert(vpath->is_open);
1169
1170                         if (dev->flags & IFF_PROMISC)
1171                                 status = vxge_hw_vpath_promisc_enable(
1172                                         vpath->handle);
1173                         else
1174                                 status = vxge_hw_vpath_promisc_disable(
1175                                         vpath->handle);
1176                         if (status != VXGE_HW_OK)
1177                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1178                                         ", status %d", dev->flags&IFF_PROMISC ?
1179                                         "enable" : "disable", status);
1180                 }
1181         }
1182
1183         memset(&mac_info, 0, sizeof(struct macInfo));
1184         /* Update individual M_CAST address list */
1185         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1186                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1187                 list_head = &vdev->vpaths[0].mac_addr_list;
1188                 if ((netdev_mc_count(dev) +
1189                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1190                                 vdev->vpaths[0].max_mac_addr_cnt)
1191                         goto _set_all_mcast;
1192
1193                 /* Delete previous MC's */
1194                 for (i = 0; i < mcast_cnt; i++) {
1195                         list_for_each_safe(entry, next, list_head) {
1196                                 mac_entry = (struct vxge_mac_addrs *)entry;
1197                                 /* Copy the mac address to delete */
1198                                 mac_address = (u8 *)&mac_entry->macaddr;
1199                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1200
1201                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1202                                         for (vpath_idx = 0; vpath_idx <
1203                                                 vdev->no_of_vpath;
1204                                                 vpath_idx++) {
1205                                                 mac_info.vpath_no = vpath_idx;
1206                                                 status = vxge_del_mac_addr(
1207                                                                 vdev,
1208                                                                 &mac_info);
1209                                         }
1210                                 }
1211                         }
1212                 }
1213
1214                 /* Add new ones */
1215                 netdev_for_each_mc_addr(ha, dev) {
1216                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1217                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1218                                         vpath_idx++) {
1219                                 mac_info.vpath_no = vpath_idx;
1220                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1221                                 status = vxge_add_mac_addr(vdev, &mac_info);
1222                                 if (status != VXGE_HW_OK) {
1223                                         vxge_debug_init(VXGE_ERR,
1224                                                 "%s:%d Setting individual"
1225                                                 "multicast address failed",
1226                                                 __func__, __LINE__);
1227                                         goto _set_all_mcast;
1228                                 }
1229                         }
1230                 }
1231
1232                 return;
1233 _set_all_mcast:
1234                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1235                 /* Delete previous MC's */
1236                 for (i = 0; i < mcast_cnt; i++) {
1237                         list_for_each_safe(entry, next, list_head) {
1238                                 mac_entry = (struct vxge_mac_addrs *)entry;
1239                                 /* Copy the mac address to delete */
1240                                 mac_address = (u8 *)&mac_entry->macaddr;
1241                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1242
1243                                 if (is_multicast_ether_addr(mac_info.macaddr))
1244                                         break;
1245                         }
1246
1247                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1248                                         vpath_idx++) {
1249                                 mac_info.vpath_no = vpath_idx;
1250                                 status = vxge_del_mac_addr(vdev, &mac_info);
1251                         }
1252                 }
1253
1254                 /* Enable all multicast */
1255                 for (i = 0; i < vdev->no_of_vpath; i++) {
1256                         vpath = &vdev->vpaths[i];
1257                         vxge_assert(vpath->is_open);
1258
1259                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1260                         if (status != VXGE_HW_OK) {
1261                                 vxge_debug_init(VXGE_ERR,
1262                                         "%s:%d Enabling all multicasts failed",
1263                                          __func__, __LINE__);
1264                         }
1265                         vdev->all_multi_flg = 1;
1266                 }
1267                 dev->flags |= IFF_ALLMULTI;
1268         }
1269
1270         vxge_debug_entryexit(VXGE_TRACE,
1271                 "%s:%d  Exiting...", __func__, __LINE__);
1272 }
1273
1274 /**
1275  * vxge_set_mac_addr
1276  * @dev: pointer to the device structure
1277  *
1278  * Update entry "0" (default MAC addr)
1279  */
1280 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1281 {
1282         struct sockaddr *addr = p;
1283         struct vxgedev *vdev;
1284         enum vxge_hw_status status = VXGE_HW_OK;
1285         struct macInfo mac_info_new, mac_info_old;
1286         int vpath_idx = 0;
1287
1288         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1289
1290         vdev = netdev_priv(dev);
1291
1292         if (!is_valid_ether_addr(addr->sa_data))
1293                 return -EINVAL;
1294
1295         memset(&mac_info_new, 0, sizeof(struct macInfo));
1296         memset(&mac_info_old, 0, sizeof(struct macInfo));
1297
1298         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1299                 __func__, __LINE__);
1300
1301         /* Get the old address */
1302         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1303
1304         /* Copy the new address */
1305         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1306
1307         /* First delete the old mac address from all the vpaths
1308         as we can't specify the index while adding new mac address */
1309         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1310                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1311                 if (!vpath->is_open) {
1312                         /* This can happen when this interface is added/removed
1313                         to the bonding interface. Delete this station address
1314                         from the linked list */
1315                         vxge_mac_list_del(vpath, &mac_info_old);
1316
1317                         /* Add this new address to the linked list
1318                         for later restoring */
1319                         vxge_mac_list_add(vpath, &mac_info_new);
1320
1321                         continue;
1322                 }
1323                 /* Delete the station address */
1324                 mac_info_old.vpath_no = vpath_idx;
1325                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1326         }
1327
1328         if (unlikely(!is_vxge_card_up(vdev))) {
1329                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1330                 return VXGE_HW_OK;
1331         }
1332
1333         /* Set this mac address to all the vpaths */
1334         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1335                 mac_info_new.vpath_no = vpath_idx;
1336                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1337                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1338                 if (status != VXGE_HW_OK)
1339                         return -EINVAL;
1340         }
1341
1342         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1343
1344         return status;
1345 }
1346
1347 /*
1348  * vxge_vpath_intr_enable
1349  * @vdev: pointer to vdev
1350  * @vp_id: vpath for which to enable the interrupts
1351  *
1352  * Enables the interrupts for the vpath
1353 */
1354 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1355 {
1356         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1357         int msix_id = 0;
1358         int tim_msix_id[4] = {0, 1, 0, 0};
1359         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1360
1361         vxge_hw_vpath_intr_enable(vpath->handle);
1362
1363         if (vdev->config.intr_type == INTA)
1364                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1365         else {
1366                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1367                         alarm_msix_id);
1368
1369                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1370                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1371                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1372
1373                 /* enable the alarm vector */
1374                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1375                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1376                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1377         }
1378 }
1379
1380 /*
1381  * vxge_vpath_intr_disable
1382  * @vdev: pointer to vdev
1383  * @vp_id: vpath for which to disable the interrupts
1384  *
1385  * Disables the interrupts for the vpath
1386 */
1387 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1388 {
1389         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1390         struct __vxge_hw_device *hldev;
1391         int msix_id;
1392
1393         hldev = pci_get_drvdata(vdev->pdev);
1394
1395         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1396
1397         vxge_hw_vpath_intr_disable(vpath->handle);
1398
1399         if (vdev->config.intr_type == INTA)
1400                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1401         else {
1402                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1403                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1404                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1405
1406                 /* disable the alarm vector */
1407                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1408                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1409                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1410         }
1411 }
1412
1413 /* list all mac addresses from DA table */
1414 static enum vxge_hw_status
1415 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1416 {
1417         enum vxge_hw_status status = VXGE_HW_OK;
1418         unsigned char macmask[ETH_ALEN];
1419         unsigned char macaddr[ETH_ALEN];
1420
1421         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1422                                 macaddr, macmask);
1423         if (status != VXGE_HW_OK) {
1424                 vxge_debug_init(VXGE_ERR,
1425                         "DA config list entry failed for vpath:%d",
1426                         vpath->device_id);
1427                 return status;
1428         }
1429
1430         while (!ether_addr_equal(mac->macaddr, macaddr)) {
1431                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1432                                 macaddr, macmask);
1433                 if (status != VXGE_HW_OK)
1434                         break;
1435         }
1436
1437         return status;
1438 }
1439
1440 /* Store all mac addresses from the list to the DA table */
1441 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1442 {
1443         enum vxge_hw_status status = VXGE_HW_OK;
1444         struct macInfo mac_info;
1445         u8 *mac_address = NULL;
1446         struct list_head *entry, *next;
1447
1448         memset(&mac_info, 0, sizeof(struct macInfo));
1449
1450         if (vpath->is_open) {
1451                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1452                         mac_address =
1453                                 (u8 *)&
1454                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1455                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1456                         ((struct vxge_mac_addrs *)entry)->state =
1457                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1458                         /* does this mac address already exist in da table? */
1459                         status = vxge_search_mac_addr_in_da_table(vpath,
1460                                 &mac_info);
1461                         if (status != VXGE_HW_OK) {
1462                                 /* Add this mac address to the DA table */
1463                                 status = vxge_hw_vpath_mac_addr_add(
1464                                         vpath->handle, mac_info.macaddr,
1465                                         mac_info.macmask,
1466                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1467                                 if (status != VXGE_HW_OK) {
1468                                         vxge_debug_init(VXGE_ERR,
1469                                             "DA add entry failed for vpath:%d",
1470                                             vpath->device_id);
1471                                         ((struct vxge_mac_addrs *)entry)->state
1472                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1473                                 }
1474                         }
1475                 }
1476         }
1477
1478         return status;
1479 }
1480
1481 /* Store all vlan ids from the list to the vid table */
1482 static enum vxge_hw_status
1483 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1484 {
1485         enum vxge_hw_status status = VXGE_HW_OK;
1486         struct vxgedev *vdev = vpath->vdev;
1487         u16 vid;
1488
1489         if (!vpath->is_open)
1490                 return status;
1491
1492         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1493                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1494
1495         return status;
1496 }
1497
1498 /*
1499  * vxge_reset_vpath
1500  * @vdev: pointer to vdev
1501  * @vp_id: vpath to reset
1502  *
1503  * Resets the vpath
1504 */
1505 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1506 {
1507         enum vxge_hw_status status = VXGE_HW_OK;
1508         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1509         int ret = 0;
1510
1511         /* check if device is down already */
1512         if (unlikely(!is_vxge_card_up(vdev)))
1513                 return 0;
1514
1515         /* is device reset already scheduled */
1516         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1517                 return 0;
1518
1519         if (vpath->handle) {
1520                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1521                         if (is_vxge_card_up(vdev) &&
1522                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1523                                         != VXGE_HW_OK) {
1524                                 vxge_debug_init(VXGE_ERR,
1525                                         "vxge_hw_vpath_recover_from_reset"
1526                                         "failed for vpath:%d", vp_id);
1527                                 return status;
1528                         }
1529                 } else {
1530                         vxge_debug_init(VXGE_ERR,
1531                                 "vxge_hw_vpath_reset failed for"
1532                                 "vpath:%d", vp_id);
1533                         return status;
1534                 }
1535         } else
1536                 return VXGE_HW_FAIL;
1537
1538         vxge_restore_vpath_mac_addr(vpath);
1539         vxge_restore_vpath_vid_table(vpath);
1540
1541         /* Enable all broadcast */
1542         vxge_hw_vpath_bcast_enable(vpath->handle);
1543
1544         /* Enable all multicast */
1545         if (vdev->all_multi_flg) {
1546                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1547                 if (status != VXGE_HW_OK)
1548                         vxge_debug_init(VXGE_ERR,
1549                                 "%s:%d Enabling multicast failed",
1550                                 __func__, __LINE__);
1551         }
1552
1553         /* Enable the interrupts */
1554         vxge_vpath_intr_enable(vdev, vp_id);
1555
1556         smp_wmb();
1557
1558         /* Enable the flow of traffic through the vpath */
1559         vxge_hw_vpath_enable(vpath->handle);
1560
1561         smp_wmb();
1562         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1563         vpath->ring.last_status = VXGE_HW_OK;
1564
1565         /* Vpath reset done */
1566         clear_bit(vp_id, &vdev->vp_reset);
1567
1568         /* Start the vpath queue */
1569         if (netif_tx_queue_stopped(vpath->fifo.txq))
1570                 netif_tx_wake_queue(vpath->fifo.txq);
1571
1572         return ret;
1573 }
1574
1575 /* Configure CI */
1576 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1577 {
1578         int i = 0;
1579
1580         /* Enable CI for RTI */
1581         if (vdev->config.intr_type == MSI_X) {
1582                 for (i = 0; i < vdev->no_of_vpath; i++) {
1583                         struct __vxge_hw_ring *hw_ring;
1584
1585                         hw_ring = vdev->vpaths[i].ring.handle;
1586                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1587                 }
1588         }
1589
1590         /* Enable CI for TTI */
1591         for (i = 0; i < vdev->no_of_vpath; i++) {
1592                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1593                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1594                 /*
1595                  * For Inta (with or without napi), Set CI ON for only one
1596                  * vpath. (Have only one free running timer).
1597                  */
1598                 if ((vdev->config.intr_type == INTA) && (i == 0))
1599                         break;
1600         }
1601
1602         return;
1603 }
1604
1605 static int do_vxge_reset(struct vxgedev *vdev, int event)
1606 {
1607         enum vxge_hw_status status;
1608         int ret = 0, vp_id, i;
1609
1610         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1611
1612         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1613                 /* check if device is down already */
1614                 if (unlikely(!is_vxge_card_up(vdev)))
1615                         return 0;
1616
1617                 /* is reset already scheduled */
1618                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1619                         return 0;
1620         }
1621
1622         if (event == VXGE_LL_FULL_RESET) {
1623                 netif_carrier_off(vdev->ndev);
1624
1625                 /* wait for all the vpath reset to complete */
1626                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1627                         while (test_bit(vp_id, &vdev->vp_reset))
1628                                 msleep(50);
1629                 }
1630
1631                 netif_carrier_on(vdev->ndev);
1632
1633                 /* if execution mode is set to debug, don't reset the adapter */
1634                 if (unlikely(vdev->exec_mode)) {
1635                         vxge_debug_init(VXGE_ERR,
1636                                 "%s: execution mode is debug, returning..",
1637                                 vdev->ndev->name);
1638                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1639                         netif_tx_stop_all_queues(vdev->ndev);
1640                         return 0;
1641                 }
1642         }
1643
1644         if (event == VXGE_LL_FULL_RESET) {
1645                 vxge_hw_device_wait_receive_idle(vdev->devh);
1646                 vxge_hw_device_intr_disable(vdev->devh);
1647
1648                 switch (vdev->cric_err_event) {
1649                 case VXGE_HW_EVENT_UNKNOWN:
1650                         netif_tx_stop_all_queues(vdev->ndev);
1651                         vxge_debug_init(VXGE_ERR,
1652                                 "fatal: %s: Disabling device due to"
1653                                 "unknown error",
1654                                 vdev->ndev->name);
1655                         ret = -EPERM;
1656                         goto out;
1657                 case VXGE_HW_EVENT_RESET_START:
1658                         break;
1659                 case VXGE_HW_EVENT_RESET_COMPLETE:
1660                 case VXGE_HW_EVENT_LINK_DOWN:
1661                 case VXGE_HW_EVENT_LINK_UP:
1662                 case VXGE_HW_EVENT_ALARM_CLEARED:
1663                 case VXGE_HW_EVENT_ECCERR:
1664                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1665                         ret = -EPERM;
1666                         goto out;
1667                 case VXGE_HW_EVENT_FIFO_ERR:
1668                 case VXGE_HW_EVENT_VPATH_ERR:
1669                         break;
1670                 case VXGE_HW_EVENT_CRITICAL_ERR:
1671                         netif_tx_stop_all_queues(vdev->ndev);
1672                         vxge_debug_init(VXGE_ERR,
1673                                 "fatal: %s: Disabling device due to"
1674                                 "serious error",
1675                                 vdev->ndev->name);
1676                         /* SOP or device reset required */
1677                         /* This event is not currently used */
1678                         ret = -EPERM;
1679                         goto out;
1680                 case VXGE_HW_EVENT_SERR:
1681                         netif_tx_stop_all_queues(vdev->ndev);
1682                         vxge_debug_init(VXGE_ERR,
1683                                 "fatal: %s: Disabling device due to"
1684                                 "serious error",
1685                                 vdev->ndev->name);
1686                         ret = -EPERM;
1687                         goto out;
1688                 case VXGE_HW_EVENT_SRPCIM_SERR:
1689                 case VXGE_HW_EVENT_MRPCIM_SERR:
1690                         ret = -EPERM;
1691                         goto out;
1692                 case VXGE_HW_EVENT_SLOT_FREEZE:
1693                         netif_tx_stop_all_queues(vdev->ndev);
1694                         vxge_debug_init(VXGE_ERR,
1695                                 "fatal: %s: Disabling device due to"
1696                                 "slot freeze",
1697                                 vdev->ndev->name);
1698                         ret = -EPERM;
1699                         goto out;
1700                 default:
1701                         break;
1702
1703                 }
1704         }
1705
1706         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1707                 netif_tx_stop_all_queues(vdev->ndev);
1708
1709         if (event == VXGE_LL_FULL_RESET) {
1710                 status = vxge_reset_all_vpaths(vdev);
1711                 if (status != VXGE_HW_OK) {
1712                         vxge_debug_init(VXGE_ERR,
1713                                 "fatal: %s: can not reset vpaths",
1714                                 vdev->ndev->name);
1715                         ret = -EPERM;
1716                         goto out;
1717                 }
1718         }
1719
1720         if (event == VXGE_LL_COMPL_RESET) {
1721                 for (i = 0; i < vdev->no_of_vpath; i++)
1722                         if (vdev->vpaths[i].handle) {
1723                                 if (vxge_hw_vpath_recover_from_reset(
1724                                         vdev->vpaths[i].handle)
1725                                                 != VXGE_HW_OK) {
1726                                         vxge_debug_init(VXGE_ERR,
1727                                                 "vxge_hw_vpath_recover_"
1728                                                 "from_reset failed for vpath: "
1729                                                 "%d", i);
1730                                         ret = -EPERM;
1731                                         goto out;
1732                                 }
1733                                 } else {
1734                                         vxge_debug_init(VXGE_ERR,
1735                                         "vxge_hw_vpath_reset failed for "
1736                                                 "vpath:%d", i);
1737                                         ret = -EPERM;
1738                                         goto out;
1739                                 }
1740         }
1741
1742         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1743                 /* Reprogram the DA table with populated mac addresses */
1744                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1745                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1746                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1747                 }
1748
1749                 /* enable vpath interrupts */
1750                 for (i = 0; i < vdev->no_of_vpath; i++)
1751                         vxge_vpath_intr_enable(vdev, i);
1752
1753                 vxge_hw_device_intr_enable(vdev->devh);
1754
1755                 smp_wmb();
1756
1757                 /* Indicate card up */
1758                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1759
1760                 /* Get the traffic to flow through the vpaths */
1761                 for (i = 0; i < vdev->no_of_vpath; i++) {
1762                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1763                         smp_wmb();
1764                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1765                 }
1766
1767                 netif_tx_wake_all_queues(vdev->ndev);
1768         }
1769
1770         /* configure CI */
1771         vxge_config_ci_for_tti_rti(vdev);
1772
1773 out:
1774         vxge_debug_entryexit(VXGE_TRACE,
1775                 "%s:%d  Exiting...", __func__, __LINE__);
1776
1777         /* Indicate reset done */
1778         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1779                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1780         return ret;
1781 }
1782
1783 /*
1784  * vxge_reset
1785  * @vdev: pointer to ll device
1786  *
1787  * driver may reset the chip on events of serr, eccerr, etc
1788  */
1789 static void vxge_reset(struct work_struct *work)
1790 {
1791         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1792
1793         if (!netif_running(vdev->ndev))
1794                 return;
1795
1796         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1797 }
1798
1799 /**
1800  * vxge_poll - Receive handler when Receive Polling is used.
1801  * @dev: pointer to the device structure.
1802  * @budget: Number of packets budgeted to be processed in this iteration.
1803  *
1804  * This function comes into picture only if Receive side is being handled
1805  * through polling (called NAPI in linux). It mostly does what the normal
1806  * Rx interrupt handler does in terms of descriptor and packet processing
1807  * but not in an interrupt context. Also it will process a specified number
1808  * of packets at most in one iteration. This value is passed down by the
1809  * kernel as the function argument 'budget'.
1810  */
1811 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1812 {
1813         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1814         int pkts_processed;
1815         int budget_org = budget;
1816
1817         ring->budget = budget;
1818         ring->pkts_processed = 0;
1819         vxge_hw_vpath_poll_rx(ring->handle);
1820         pkts_processed = ring->pkts_processed;
1821
1822         if (pkts_processed < budget_org) {
1823                 napi_complete_done(napi, pkts_processed);
1824
1825                 /* Re enable the Rx interrupts for the vpath */
1826                 vxge_hw_channel_msix_unmask(
1827                                 (struct __vxge_hw_channel *)ring->handle,
1828                                 ring->rx_vector_no);
1829                 mmiowb();
1830         }
1831
1832         /* We are copying and returning the local variable, in case if after
1833          * clearing the msix interrupt above, if the interrupt fires right
1834          * away which can preempt this NAPI thread */
1835         return pkts_processed;
1836 }
1837
1838 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1839 {
1840         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1841         int pkts_processed = 0;
1842         int i;
1843         int budget_org = budget;
1844         struct vxge_ring *ring;
1845
1846         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1847
1848         for (i = 0; i < vdev->no_of_vpath; i++) {
1849                 ring = &vdev->vpaths[i].ring;
1850                 ring->budget = budget;
1851                 ring->pkts_processed = 0;
1852                 vxge_hw_vpath_poll_rx(ring->handle);
1853                 pkts_processed += ring->pkts_processed;
1854                 budget -= ring->pkts_processed;
1855                 if (budget <= 0)
1856                         break;
1857         }
1858
1859         VXGE_COMPLETE_ALL_TX(vdev);
1860
1861         if (pkts_processed < budget_org) {
1862                 napi_complete_done(napi, pkts_processed);
1863                 /* Re enable the Rx interrupts for the ring */
1864                 vxge_hw_device_unmask_all(hldev);
1865                 vxge_hw_device_flush_io(hldev);
1866         }
1867
1868         return pkts_processed;
1869 }
1870
1871 #ifdef CONFIG_NET_POLL_CONTROLLER
1872 /**
1873  * vxge_netpoll - netpoll event handler entry point
1874  * @dev : pointer to the device structure.
1875  * Description:
1876  *      This function will be called by upper layer to check for events on the
1877  * interface in situations where interrupts are disabled. It is used for
1878  * specific in-kernel networking tasks, such as remote consoles and kernel
1879  * debugging over the network (example netdump in RedHat).
1880  */
1881 static void vxge_netpoll(struct net_device *dev)
1882 {
1883         struct vxgedev *vdev = netdev_priv(dev);
1884         struct pci_dev *pdev = vdev->pdev;
1885         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1886         const int irq = pdev->irq;
1887
1888         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1889
1890         if (pci_channel_offline(pdev))
1891                 return;
1892
1893         disable_irq(irq);
1894         vxge_hw_device_clear_tx_rx(hldev);
1895
1896         vxge_hw_device_clear_tx_rx(hldev);
1897         VXGE_COMPLETE_ALL_RX(vdev);
1898         VXGE_COMPLETE_ALL_TX(vdev);
1899
1900         enable_irq(irq);
1901
1902         vxge_debug_entryexit(VXGE_TRACE,
1903                 "%s:%d  Exiting...", __func__, __LINE__);
1904 }
1905 #endif
1906
1907 /* RTH configuration */
1908 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1909 {
1910         enum vxge_hw_status status = VXGE_HW_OK;
1911         struct vxge_hw_rth_hash_types hash_types;
1912         u8 itable[256] = {0}; /* indirection table */
1913         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1914         int index;
1915
1916         /*
1917          * Filling
1918          *      - itable with bucket numbers
1919          *      - mtable with bucket-to-vpath mapping
1920          */
1921         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1922                 itable[index] = index;
1923                 mtable[index] = index % vdev->no_of_vpath;
1924         }
1925
1926         /* set indirection table, bucket-to-vpath mapping */
1927         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1928                                                 vdev->no_of_vpath,
1929                                                 mtable, itable,
1930                                                 vdev->config.rth_bkt_sz);
1931         if (status != VXGE_HW_OK) {
1932                 vxge_debug_init(VXGE_ERR,
1933                         "RTH indirection table configuration failed "
1934                         "for vpath:%d", vdev->vpaths[0].device_id);
1935                 return status;
1936         }
1937
1938         /* Fill RTH hash types */
1939         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1940         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1941         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1942         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1943         hash_types.hash_type_tcpipv6ex_en =
1944                                         vdev->config.rth_hash_type_tcpipv6ex;
1945         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1946
1947         /*
1948          * Because the itable_set() method uses the active_table field
1949          * for the target virtual path the RTH config should be updated
1950          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1951          * when steering frames.
1952          */
1953         for (index = 0; index < vdev->no_of_vpath; index++) {
1954                 status = vxge_hw_vpath_rts_rth_set(
1955                                 vdev->vpaths[index].handle,
1956                                 vdev->config.rth_algorithm,
1957                                 &hash_types,
1958                                 vdev->config.rth_bkt_sz);
1959                 if (status != VXGE_HW_OK) {
1960                         vxge_debug_init(VXGE_ERR,
1961                                 "RTH configuration failed for vpath:%d",
1962                                 vdev->vpaths[index].device_id);
1963                         return status;
1964                 }
1965         }
1966
1967         return status;
1968 }
1969
1970 /* reset vpaths */
1971 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1972 {
1973         enum vxge_hw_status status = VXGE_HW_OK;
1974         struct vxge_vpath *vpath;
1975         int i;
1976
1977         for (i = 0; i < vdev->no_of_vpath; i++) {
1978                 vpath = &vdev->vpaths[i];
1979                 if (vpath->handle) {
1980                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1981                                 if (is_vxge_card_up(vdev) &&
1982                                         vxge_hw_vpath_recover_from_reset(
1983                                                 vpath->handle) != VXGE_HW_OK) {
1984                                         vxge_debug_init(VXGE_ERR,
1985                                                 "vxge_hw_vpath_recover_"
1986                                                 "from_reset failed for vpath: "
1987                                                 "%d", i);
1988                                         return status;
1989                                 }
1990                         } else {
1991                                 vxge_debug_init(VXGE_ERR,
1992                                         "vxge_hw_vpath_reset failed for "
1993                                         "vpath:%d", i);
1994                                 return status;
1995                         }
1996                 }
1997         }
1998
1999         return status;
2000 }
2001
2002 /* close vpaths */
2003 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2004 {
2005         struct vxge_vpath *vpath;
2006         int i;
2007
2008         for (i = index; i < vdev->no_of_vpath; i++) {
2009                 vpath = &vdev->vpaths[i];
2010
2011                 if (vpath->handle && vpath->is_open) {
2012                         vxge_hw_vpath_close(vpath->handle);
2013                         vdev->stats.vpaths_open--;
2014                 }
2015                 vpath->is_open = 0;
2016                 vpath->handle = NULL;
2017         }
2018 }
2019
2020 /* open vpaths */
2021 static int vxge_open_vpaths(struct vxgedev *vdev)
2022 {
2023         struct vxge_hw_vpath_attr attr;
2024         enum vxge_hw_status status;
2025         struct vxge_vpath *vpath;
2026         u32 vp_id = 0;
2027         int i;
2028
2029         for (i = 0; i < vdev->no_of_vpath; i++) {
2030                 vpath = &vdev->vpaths[i];
2031                 vxge_assert(vpath->is_configured);
2032
2033                 if (!vdev->titan1) {
2034                         struct vxge_hw_vp_config *vcfg;
2035                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2036
2037                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2038                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2039                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2040                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2041                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2042                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2043                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2044                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2045                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2046                 }
2047
2048                 attr.vp_id = vpath->device_id;
2049                 attr.fifo_attr.callback = vxge_xmit_compl;
2050                 attr.fifo_attr.txdl_term = vxge_tx_term;
2051                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2052                 attr.fifo_attr.userdata = &vpath->fifo;
2053
2054                 attr.ring_attr.callback = vxge_rx_1b_compl;
2055                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2056                 attr.ring_attr.rxd_term = vxge_rx_term;
2057                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2058                 attr.ring_attr.userdata = &vpath->ring;
2059
2060                 vpath->ring.ndev = vdev->ndev;
2061                 vpath->ring.pdev = vdev->pdev;
2062
2063                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2064                 if (status == VXGE_HW_OK) {
2065                         vpath->fifo.handle =
2066                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2067                         vpath->ring.handle =
2068                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2069                         vpath->fifo.tx_steering_type =
2070                                 vdev->config.tx_steering_type;
2071                         vpath->fifo.ndev = vdev->ndev;
2072                         vpath->fifo.pdev = vdev->pdev;
2073
2074                         u64_stats_init(&vpath->fifo.stats.syncp);
2075                         u64_stats_init(&vpath->ring.stats.syncp);
2076
2077                         if (vdev->config.tx_steering_type)
2078                                 vpath->fifo.txq =
2079                                         netdev_get_tx_queue(vdev->ndev, i);
2080                         else
2081                                 vpath->fifo.txq =
2082                                         netdev_get_tx_queue(vdev->ndev, 0);
2083                         vpath->fifo.indicate_max_pkts =
2084                                 vdev->config.fifo_indicate_max_pkts;
2085                         vpath->fifo.tx_vector_no = 0;
2086                         vpath->ring.rx_vector_no = 0;
2087                         vpath->ring.rx_hwts = vdev->rx_hwts;
2088                         vpath->is_open = 1;
2089                         vdev->vp_handles[i] = vpath->handle;
2090                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2091                         vdev->stats.vpaths_open++;
2092                 } else {
2093                         vdev->stats.vpath_open_fail++;
2094                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2095                                         "open with status: %d",
2096                                         vdev->ndev->name, vpath->device_id,
2097                                         status);
2098                         vxge_close_vpaths(vdev, 0);
2099                         return -EPERM;
2100                 }
2101
2102                 vp_id = vpath->handle->vpath->vp_id;
2103                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2104         }
2105
2106         return VXGE_HW_OK;
2107 }
2108
2109 /**
2110  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2111  *  if the interrupts are not within a range
2112  *  @fifo: pointer to transmit fifo structure
2113  *  Description: The function changes boundary timer and restriction timer
2114  *  value depends on the traffic
2115  *  Return Value: None
2116  */
2117 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2118 {
2119         fifo->interrupt_count++;
2120         if (time_before(fifo->jiffies + HZ / 100, jiffies)) {
2121                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2122
2123                 fifo->jiffies = jiffies;
2124                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2125                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2126                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2127                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2128                 } else if (hw_fifo->rtimer != 0) {
2129                         hw_fifo->rtimer = 0;
2130                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2131                 }
2132                 fifo->interrupt_count = 0;
2133         }
2134 }
2135
2136 /**
2137  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2138  *  if the interrupts are not within a range
2139  *  @ring: pointer to receive ring structure
2140  *  Description: The function increases of decreases the packet counts within
2141  *  the ranges of traffic utilization, if the interrupts due to this ring are
2142  *  not within a fixed range.
2143  *  Return Value: Nothing
2144  */
2145 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2146 {
2147         ring->interrupt_count++;
2148         if (time_before(ring->jiffies + HZ / 100, jiffies)) {
2149                 struct __vxge_hw_ring *hw_ring = ring->handle;
2150
2151                 ring->jiffies = jiffies;
2152                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2153                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2154                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2155                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2156                 } else if (hw_ring->rtimer != 0) {
2157                         hw_ring->rtimer = 0;
2158                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2159                 }
2160                 ring->interrupt_count = 0;
2161         }
2162 }
2163
2164 /*
2165  *  vxge_isr_napi
2166  *  @irq: the irq of the device.
2167  *  @dev_id: a void pointer to the hldev structure of the Titan device
2168  *  @ptregs: pointer to the registers pushed on the stack.
2169  *
2170  *  This function is the ISR handler of the device when napi is enabled. It
2171  *  identifies the reason for the interrupt and calls the relevant service
2172  *  routines.
2173  */
2174 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2175 {
2176         struct __vxge_hw_device *hldev;
2177         u64 reason;
2178         enum vxge_hw_status status;
2179         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2180
2181         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2182
2183         hldev = pci_get_drvdata(vdev->pdev);
2184
2185         if (pci_channel_offline(vdev->pdev))
2186                 return IRQ_NONE;
2187
2188         if (unlikely(!is_vxge_card_up(vdev)))
2189                 return IRQ_HANDLED;
2190
2191         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2192         if (status == VXGE_HW_OK) {
2193                 vxge_hw_device_mask_all(hldev);
2194
2195                 if (reason &
2196                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2197                         vdev->vpaths_deployed >>
2198                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2199
2200                         vxge_hw_device_clear_tx_rx(hldev);
2201                         napi_schedule(&vdev->napi);
2202                         vxge_debug_intr(VXGE_TRACE,
2203                                 "%s:%d  Exiting...", __func__, __LINE__);
2204                         return IRQ_HANDLED;
2205                 } else
2206                         vxge_hw_device_unmask_all(hldev);
2207         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2208                 (status == VXGE_HW_ERR_CRITICAL) ||
2209                 (status == VXGE_HW_ERR_FIFO))) {
2210                 vxge_hw_device_mask_all(hldev);
2211                 vxge_hw_device_flush_io(hldev);
2212                 return IRQ_HANDLED;
2213         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2214                 return IRQ_HANDLED;
2215
2216         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2217         return IRQ_NONE;
2218 }
2219
2220 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2221 {
2222         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2223
2224         adaptive_coalesce_tx_interrupts(fifo);
2225
2226         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2227                                   fifo->tx_vector_no);
2228
2229         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2230                                    fifo->tx_vector_no);
2231
2232         VXGE_COMPLETE_VPATH_TX(fifo);
2233
2234         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2235                                     fifo->tx_vector_no);
2236
2237         mmiowb();
2238
2239         return IRQ_HANDLED;
2240 }
2241
2242 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2243 {
2244         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2245
2246         adaptive_coalesce_rx_interrupts(ring);
2247
2248         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2249                                   ring->rx_vector_no);
2250
2251         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2252                                    ring->rx_vector_no);
2253
2254         napi_schedule(&ring->napi);
2255         return IRQ_HANDLED;
2256 }
2257
2258 static irqreturn_t
2259 vxge_alarm_msix_handle(int irq, void *dev_id)
2260 {
2261         int i;
2262         enum vxge_hw_status status;
2263         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2264         struct vxgedev *vdev = vpath->vdev;
2265         int msix_id = (vpath->handle->vpath->vp_id *
2266                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2267
2268         for (i = 0; i < vdev->no_of_vpath; i++) {
2269                 /* Reduce the chance of losing alarm interrupts by masking
2270                  * the vector. A pending bit will be set if an alarm is
2271                  * generated and on unmask the interrupt will be fired.
2272                  */
2273                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2274                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2275                 mmiowb();
2276
2277                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2278                         vdev->exec_mode);
2279                 if (status == VXGE_HW_OK) {
2280                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2281                                                   msix_id);
2282                         mmiowb();
2283                         continue;
2284                 }
2285                 vxge_debug_intr(VXGE_ERR,
2286                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2287                         VXGE_DRIVER_NAME, status);
2288         }
2289         return IRQ_HANDLED;
2290 }
2291
2292 static int vxge_alloc_msix(struct vxgedev *vdev)
2293 {
2294         int j, i, ret = 0;
2295         int msix_intr_vect = 0, temp;
2296         vdev->intr_cnt = 0;
2297
2298 start:
2299         /* Tx/Rx MSIX Vectors count */
2300         vdev->intr_cnt = vdev->no_of_vpath * 2;
2301
2302         /* Alarm MSIX Vectors count */
2303         vdev->intr_cnt++;
2304
2305         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2306                                 GFP_KERNEL);
2307         if (!vdev->entries) {
2308                 vxge_debug_init(VXGE_ERR,
2309                         "%s: memory allocation failed",
2310                         VXGE_DRIVER_NAME);
2311                 ret = -ENOMEM;
2312                 goto alloc_entries_failed;
2313         }
2314
2315         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2316                                      sizeof(struct vxge_msix_entry),
2317                                      GFP_KERNEL);
2318         if (!vdev->vxge_entries) {
2319                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2320                         VXGE_DRIVER_NAME);
2321                 ret = -ENOMEM;
2322                 goto alloc_vxge_entries_failed;
2323         }
2324
2325         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2326
2327                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2328
2329                 /* Initialize the fifo vector */
2330                 vdev->entries[j].entry = msix_intr_vect;
2331                 vdev->vxge_entries[j].entry = msix_intr_vect;
2332                 vdev->vxge_entries[j].in_use = 0;
2333                 j++;
2334
2335                 /* Initialize the ring vector */
2336                 vdev->entries[j].entry = msix_intr_vect + 1;
2337                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2338                 vdev->vxge_entries[j].in_use = 0;
2339                 j++;
2340         }
2341
2342         /* Initialize the alarm vector */
2343         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2344         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2345         vdev->vxge_entries[j].in_use = 0;
2346
2347         ret = pci_enable_msix_range(vdev->pdev,
2348                                     vdev->entries, 3, vdev->intr_cnt);
2349         if (ret < 0) {
2350                 ret = -ENODEV;
2351                 goto enable_msix_failed;
2352         } else if (ret < vdev->intr_cnt) {
2353                 pci_disable_msix(vdev->pdev);
2354
2355                 vxge_debug_init(VXGE_ERR,
2356                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2357                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2358                 if (max_config_vpath != VXGE_USE_DEFAULT) {
2359                         ret = -ENODEV;
2360                         goto enable_msix_failed;
2361                 }
2362
2363                 kfree(vdev->entries);
2364                 kfree(vdev->vxge_entries);
2365                 vdev->entries = NULL;
2366                 vdev->vxge_entries = NULL;
2367                 /* Try with less no of vector by reducing no of vpaths count */
2368                 temp = (ret - 1)/2;
2369                 vxge_close_vpaths(vdev, temp);
2370                 vdev->no_of_vpath = temp;
2371                 goto start;
2372         }
2373         return 0;
2374
2375 enable_msix_failed:
2376         kfree(vdev->vxge_entries);
2377 alloc_vxge_entries_failed:
2378         kfree(vdev->entries);
2379 alloc_entries_failed:
2380         return ret;
2381 }
2382
2383 static int vxge_enable_msix(struct vxgedev *vdev)
2384 {
2385
2386         int i, ret = 0;
2387         /* 0 - Tx, 1 - Rx  */
2388         int tim_msix_id[4] = {0, 1, 0, 0};
2389
2390         vdev->intr_cnt = 0;
2391
2392         /* allocate msix vectors */
2393         ret = vxge_alloc_msix(vdev);
2394         if (!ret) {
2395                 for (i = 0; i < vdev->no_of_vpath; i++) {
2396                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2397
2398                         /* If fifo or ring are not enabled, the MSIX vector for
2399                          * it should be set to 0.
2400                          */
2401                         vpath->ring.rx_vector_no = (vpath->device_id *
2402                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2403
2404                         vpath->fifo.tx_vector_no = (vpath->device_id *
2405                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2406
2407                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2408                                                VXGE_ALARM_MSIX_ID);
2409                 }
2410         }
2411
2412         return ret;
2413 }
2414
2415 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2416 {
2417         int intr_cnt;
2418
2419         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2420                 intr_cnt++) {
2421                 if (vdev->vxge_entries[intr_cnt].in_use) {
2422                         synchronize_irq(vdev->entries[intr_cnt].vector);
2423                         free_irq(vdev->entries[intr_cnt].vector,
2424                                 vdev->vxge_entries[intr_cnt].arg);
2425                         vdev->vxge_entries[intr_cnt].in_use = 0;
2426                 }
2427         }
2428
2429         kfree(vdev->entries);
2430         kfree(vdev->vxge_entries);
2431         vdev->entries = NULL;
2432         vdev->vxge_entries = NULL;
2433
2434         if (vdev->config.intr_type == MSI_X)
2435                 pci_disable_msix(vdev->pdev);
2436 }
2437
2438 static void vxge_rem_isr(struct vxgedev *vdev)
2439 {
2440         if (IS_ENABLED(CONFIG_PCI_MSI) &&
2441             vdev->config.intr_type == MSI_X) {
2442                 vxge_rem_msix_isr(vdev);
2443         } else if (vdev->config.intr_type == INTA) {
2444                         synchronize_irq(vdev->pdev->irq);
2445                         free_irq(vdev->pdev->irq, vdev);
2446         }
2447 }
2448
2449 static int vxge_add_isr(struct vxgedev *vdev)
2450 {
2451         int ret = 0;
2452         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2453         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2454
2455         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X)
2456                 ret = vxge_enable_msix(vdev);
2457
2458         if (ret) {
2459                 vxge_debug_init(VXGE_ERR,
2460                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2461                 vxge_debug_init(VXGE_ERR,
2462                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2463                 vdev->config.intr_type = INTA;
2464         }
2465
2466         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) {
2467                 for (intr_idx = 0;
2468                      intr_idx < (vdev->no_of_vpath *
2469                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2470
2471                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2472                         irq_req = 0;
2473
2474                         switch (msix_idx) {
2475                         case 0:
2476                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2477                                         "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2478                                         vdev->ndev->name,
2479                                         vdev->entries[intr_cnt].entry,
2480                                         pci_fun, vp_idx);
2481                                 ret = request_irq(
2482                                         vdev->entries[intr_cnt].vector,
2483                                         vxge_tx_msix_handle, 0,
2484                                         vdev->desc[intr_cnt],
2485                                         &vdev->vpaths[vp_idx].fifo);
2486                                 vdev->vxge_entries[intr_cnt].arg =
2487                                                 &vdev->vpaths[vp_idx].fifo;
2488                                 irq_req = 1;
2489                                 break;
2490                         case 1:
2491                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2492                                         "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2493                                         vdev->ndev->name,
2494                                         vdev->entries[intr_cnt].entry,
2495                                         pci_fun, vp_idx);
2496                                 ret = request_irq(
2497                                         vdev->entries[intr_cnt].vector,
2498                                         vxge_rx_msix_napi_handle, 0,
2499                                         vdev->desc[intr_cnt],
2500                                         &vdev->vpaths[vp_idx].ring);
2501                                 vdev->vxge_entries[intr_cnt].arg =
2502                                                 &vdev->vpaths[vp_idx].ring;
2503                                 irq_req = 1;
2504                                 break;
2505                         }
2506
2507                         if (ret) {
2508                                 vxge_debug_init(VXGE_ERR,
2509                                         "%s: MSIX - %d  Registration failed",
2510                                         vdev->ndev->name, intr_cnt);
2511                                 vxge_rem_msix_isr(vdev);
2512                                 vdev->config.intr_type = INTA;
2513                                 vxge_debug_init(VXGE_ERR,
2514                                         "%s: Defaulting to INTA",
2515                                         vdev->ndev->name);
2516                                 goto INTA_MODE;
2517                         }
2518
2519                         if (irq_req) {
2520                                 /* We requested for this msix interrupt */
2521                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2522                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2523                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2524                                 vxge_hw_vpath_msix_unmask(
2525                                         vdev->vpaths[vp_idx].handle,
2526                                         msix_idx);
2527                                 intr_cnt++;
2528                         }
2529
2530                         /* Point to next vpath handler */
2531                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2532                             (vp_idx < (vdev->no_of_vpath - 1)))
2533                                 vp_idx++;
2534                 }
2535
2536                 intr_cnt = vdev->no_of_vpath * 2;
2537                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2538                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2539                         vdev->ndev->name,
2540                         vdev->entries[intr_cnt].entry,
2541                         pci_fun);
2542                 /* For Alarm interrupts */
2543                 ret = request_irq(vdev->entries[intr_cnt].vector,
2544                                         vxge_alarm_msix_handle, 0,
2545                                         vdev->desc[intr_cnt],
2546                                         &vdev->vpaths[0]);
2547                 if (ret) {
2548                         vxge_debug_init(VXGE_ERR,
2549                                 "%s: MSIX - %d Registration failed",
2550                                 vdev->ndev->name, intr_cnt);
2551                         vxge_rem_msix_isr(vdev);
2552                         vdev->config.intr_type = INTA;
2553                         vxge_debug_init(VXGE_ERR,
2554                                 "%s: Defaulting to INTA",
2555                                 vdev->ndev->name);
2556                                 goto INTA_MODE;
2557                 }
2558
2559                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2560                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2561                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2562                                         msix_idx);
2563                 vdev->vxge_entries[intr_cnt].in_use = 1;
2564                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2565         }
2566
2567 INTA_MODE:
2568         if (vdev->config.intr_type == INTA) {
2569                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2570                         "%s:vxge:INTA", vdev->ndev->name);
2571                 vxge_hw_device_set_intr_type(vdev->devh,
2572                         VXGE_HW_INTR_MODE_IRQLINE);
2573
2574                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2575
2576                 ret = request_irq((int) vdev->pdev->irq,
2577                         vxge_isr_napi,
2578                         IRQF_SHARED, vdev->desc[0], vdev);
2579                 if (ret) {
2580                         vxge_debug_init(VXGE_ERR,
2581                                 "%s %s-%d: ISR registration failed",
2582                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2583                         return -ENODEV;
2584                 }
2585                 vxge_debug_init(VXGE_TRACE,
2586                         "new %s-%d line allocated",
2587                         "IRQ", vdev->pdev->irq);
2588         }
2589
2590         return VXGE_HW_OK;
2591 }
2592
2593 static void vxge_poll_vp_reset(struct timer_list *t)
2594 {
2595         struct vxgedev *vdev = from_timer(vdev, t, vp_reset_timer);
2596         int i, j = 0;
2597
2598         for (i = 0; i < vdev->no_of_vpath; i++) {
2599                 if (test_bit(i, &vdev->vp_reset)) {
2600                         vxge_reset_vpath(vdev, i);
2601                         j++;
2602                 }
2603         }
2604         if (j && (vdev->config.intr_type != MSI_X)) {
2605                 vxge_hw_device_unmask_all(vdev->devh);
2606                 vxge_hw_device_flush_io(vdev->devh);
2607         }
2608
2609         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2610 }
2611
2612 static void vxge_poll_vp_lockup(struct timer_list *t)
2613 {
2614         struct vxgedev *vdev = from_timer(vdev, t, vp_lockup_timer);
2615         enum vxge_hw_status status = VXGE_HW_OK;
2616         struct vxge_vpath *vpath;
2617         struct vxge_ring *ring;
2618         int i;
2619         unsigned long rx_frms;
2620
2621         for (i = 0; i < vdev->no_of_vpath; i++) {
2622                 ring = &vdev->vpaths[i].ring;
2623
2624                 /* Truncated to machine word size number of frames */
2625                 rx_frms = READ_ONCE(ring->stats.rx_frms);
2626
2627                 /* Did this vpath received any packets */
2628                 if (ring->stats.prev_rx_frms == rx_frms) {
2629                         status = vxge_hw_vpath_check_leak(ring->handle);
2630
2631                         /* Did it received any packets last time */
2632                         if ((VXGE_HW_FAIL == status) &&
2633                                 (VXGE_HW_FAIL == ring->last_status)) {
2634
2635                                 /* schedule vpath reset */
2636                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2637                                         vpath = &vdev->vpaths[i];
2638
2639                                         /* disable interrupts for this vpath */
2640                                         vxge_vpath_intr_disable(vdev, i);
2641
2642                                         /* stop the queue for this vpath */
2643                                         netif_tx_stop_queue(vpath->fifo.txq);
2644                                         continue;
2645                                 }
2646                         }
2647                 }
2648                 ring->stats.prev_rx_frms = rx_frms;
2649                 ring->last_status = status;
2650         }
2651
2652         /* Check every 1 milli second */
2653         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2654 }
2655
2656 static netdev_features_t vxge_fix_features(struct net_device *dev,
2657         netdev_features_t features)
2658 {
2659         netdev_features_t changed = dev->features ^ features;
2660
2661         /* Enabling RTH requires some of the logic in vxge_device_register and a
2662          * vpath reset.  Due to these restrictions, only allow modification
2663          * while the interface is down.
2664          */
2665         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2666                 features ^= NETIF_F_RXHASH;
2667
2668         return features;
2669 }
2670
2671 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2672 {
2673         struct vxgedev *vdev = netdev_priv(dev);
2674         netdev_features_t changed = dev->features ^ features;
2675
2676         if (!(changed & NETIF_F_RXHASH))
2677                 return 0;
2678
2679         /* !netif_running() ensured by vxge_fix_features() */
2680
2681         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2682         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2683                 dev->features = features ^ NETIF_F_RXHASH;
2684                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2685                 return -EIO;
2686         }
2687
2688         return 0;
2689 }
2690
2691 /**
2692  * vxge_open
2693  * @dev: pointer to the device structure.
2694  *
2695  * This function is the open entry point of the driver. It mainly calls a
2696  * function to allocate Rx buffers and inserts them into the buffer
2697  * descriptors and then enables the Rx part of the NIC.
2698  * Return value: '0' on success and an appropriate (-)ve integer as
2699  * defined in errno.h file on failure.
2700  */
2701 static int vxge_open(struct net_device *dev)
2702 {
2703         enum vxge_hw_status status;
2704         struct vxgedev *vdev;
2705         struct __vxge_hw_device *hldev;
2706         struct vxge_vpath *vpath;
2707         int ret = 0;
2708         int i;
2709         u64 val64;
2710
2711         vxge_debug_entryexit(VXGE_TRACE,
2712                 "%s: %s:%d", dev->name, __func__, __LINE__);
2713
2714         vdev = netdev_priv(dev);
2715         hldev = pci_get_drvdata(vdev->pdev);
2716
2717         /* make sure you have link off by default every time Nic is
2718          * initialized */
2719         netif_carrier_off(dev);
2720
2721         /* Open VPATHs */
2722         status = vxge_open_vpaths(vdev);
2723         if (status != VXGE_HW_OK) {
2724                 vxge_debug_init(VXGE_ERR,
2725                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2726                 ret = -EPERM;
2727                 goto out0;
2728         }
2729
2730         vdev->mtu = dev->mtu;
2731
2732         status = vxge_add_isr(vdev);
2733         if (status != VXGE_HW_OK) {
2734                 vxge_debug_init(VXGE_ERR,
2735                         "%s: fatal: ISR add failed", dev->name);
2736                 ret = -EPERM;
2737                 goto out1;
2738         }
2739
2740         if (vdev->config.intr_type != MSI_X) {
2741                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2742                         vdev->config.napi_weight);
2743                 napi_enable(&vdev->napi);
2744                 for (i = 0; i < vdev->no_of_vpath; i++) {
2745                         vpath = &vdev->vpaths[i];
2746                         vpath->ring.napi_p = &vdev->napi;
2747                 }
2748         } else {
2749                 for (i = 0; i < vdev->no_of_vpath; i++) {
2750                         vpath = &vdev->vpaths[i];
2751                         netif_napi_add(dev, &vpath->ring.napi,
2752                             vxge_poll_msix, vdev->config.napi_weight);
2753                         napi_enable(&vpath->ring.napi);
2754                         vpath->ring.napi_p = &vpath->ring.napi;
2755                 }
2756         }
2757
2758         /* configure RTH */
2759         if (vdev->config.rth_steering) {
2760                 status = vxge_rth_configure(vdev);
2761                 if (status != VXGE_HW_OK) {
2762                         vxge_debug_init(VXGE_ERR,
2763                                 "%s: fatal: RTH configuration failed",
2764                                 dev->name);
2765                         ret = -EPERM;
2766                         goto out2;
2767                 }
2768         }
2769         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2770                hldev->config.rth_en ? "enabled" : "disabled");
2771
2772         for (i = 0; i < vdev->no_of_vpath; i++) {
2773                 vpath = &vdev->vpaths[i];
2774
2775                 /* set initial mtu before enabling the device */
2776                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2777                 if (status != VXGE_HW_OK) {
2778                         vxge_debug_init(VXGE_ERR,
2779                                 "%s: fatal: can not set new MTU", dev->name);
2780                         ret = -EPERM;
2781                         goto out2;
2782                 }
2783         }
2784
2785         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2786         vxge_debug_init(vdev->level_trace,
2787                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2788         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2789
2790         /* Restore the DA, VID table and also multicast and promiscuous mode
2791          * states
2792          */
2793         if (vdev->all_multi_flg) {
2794                 for (i = 0; i < vdev->no_of_vpath; i++) {
2795                         vpath = &vdev->vpaths[i];
2796                         vxge_restore_vpath_mac_addr(vpath);
2797                         vxge_restore_vpath_vid_table(vpath);
2798
2799                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2800                         if (status != VXGE_HW_OK)
2801                                 vxge_debug_init(VXGE_ERR,
2802                                         "%s:%d Enabling multicast failed",
2803                                         __func__, __LINE__);
2804                 }
2805         }
2806
2807         /* Enable vpath to sniff all unicast/multicast traffic that not
2808          * addressed to them. We allow promiscuous mode for PF only
2809          */
2810
2811         val64 = 0;
2812         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2813                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2814
2815         vxge_hw_mgmt_reg_write(vdev->devh,
2816                 vxge_hw_mgmt_reg_type_mrpcim,
2817                 0,
2818                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2819                         rxmac_authorize_all_addr),
2820                 val64);
2821
2822         vxge_hw_mgmt_reg_write(vdev->devh,
2823                 vxge_hw_mgmt_reg_type_mrpcim,
2824                 0,
2825                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2826                         rxmac_authorize_all_vid),
2827                 val64);
2828
2829         vxge_set_multicast(dev);
2830
2831         /* Enabling Bcast and mcast for all vpath */
2832         for (i = 0; i < vdev->no_of_vpath; i++) {
2833                 vpath = &vdev->vpaths[i];
2834                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2835                 if (status != VXGE_HW_OK)
2836                         vxge_debug_init(VXGE_ERR,
2837                                 "%s : Can not enable bcast for vpath "
2838                                 "id %d", dev->name, i);
2839                 if (vdev->config.addr_learn_en) {
2840                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2841                         if (status != VXGE_HW_OK)
2842                                 vxge_debug_init(VXGE_ERR,
2843                                         "%s : Can not enable mcast for vpath "
2844                                         "id %d", dev->name, i);
2845                 }
2846         }
2847
2848         vxge_hw_device_setpause_data(vdev->devh, 0,
2849                 vdev->config.tx_pause_enable,
2850                 vdev->config.rx_pause_enable);
2851
2852         if (vdev->vp_reset_timer.function == NULL)
2853                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset,
2854                               HZ / 2);
2855
2856         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2857         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2858                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup,
2859                               HZ / 2);
2860
2861         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2862
2863         smp_wmb();
2864
2865         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2866                 netif_carrier_on(vdev->ndev);
2867                 netdev_notice(vdev->ndev, "Link Up\n");
2868                 vdev->stats.link_up++;
2869         }
2870
2871         vxge_hw_device_intr_enable(vdev->devh);
2872
2873         smp_wmb();
2874
2875         for (i = 0; i < vdev->no_of_vpath; i++) {
2876                 vpath = &vdev->vpaths[i];
2877
2878                 vxge_hw_vpath_enable(vpath->handle);
2879                 smp_wmb();
2880                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2881         }
2882
2883         netif_tx_start_all_queues(vdev->ndev);
2884
2885         /* configure CI */
2886         vxge_config_ci_for_tti_rti(vdev);
2887
2888         goto out0;
2889
2890 out2:
2891         vxge_rem_isr(vdev);
2892
2893         /* Disable napi */
2894         if (vdev->config.intr_type != MSI_X)
2895                 napi_disable(&vdev->napi);
2896         else {
2897                 for (i = 0; i < vdev->no_of_vpath; i++)
2898                         napi_disable(&vdev->vpaths[i].ring.napi);
2899         }
2900
2901 out1:
2902         vxge_close_vpaths(vdev, 0);
2903 out0:
2904         vxge_debug_entryexit(VXGE_TRACE,
2905                                 "%s: %s:%d  Exiting...",
2906                                 dev->name, __func__, __LINE__);
2907         return ret;
2908 }
2909
2910 /* Loop through the mac address list and delete all the entries */
2911 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2912 {
2913
2914         struct list_head *entry, *next;
2915         if (list_empty(&vpath->mac_addr_list))
2916                 return;
2917
2918         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2919                 list_del(entry);
2920                 kfree((struct vxge_mac_addrs *)entry);
2921         }
2922 }
2923
2924 static void vxge_napi_del_all(struct vxgedev *vdev)
2925 {
2926         int i;
2927         if (vdev->config.intr_type != MSI_X)
2928                 netif_napi_del(&vdev->napi);
2929         else {
2930                 for (i = 0; i < vdev->no_of_vpath; i++)
2931                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2932         }
2933 }
2934
2935 static int do_vxge_close(struct net_device *dev, int do_io)
2936 {
2937         enum vxge_hw_status status;
2938         struct vxgedev *vdev;
2939         struct __vxge_hw_device *hldev;
2940         int i;
2941         u64 val64, vpath_vector;
2942         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2943                 dev->name, __func__, __LINE__);
2944
2945         vdev = netdev_priv(dev);
2946         hldev = pci_get_drvdata(vdev->pdev);
2947
2948         if (unlikely(!is_vxge_card_up(vdev)))
2949                 return 0;
2950
2951         /* If vxge_handle_crit_err task is executing,
2952          * wait till it completes. */
2953         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2954                 msleep(50);
2955
2956         if (do_io) {
2957                 /* Put the vpath back in normal mode */
2958                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2959                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2960                                 vxge_hw_mgmt_reg_type_mrpcim,
2961                                 0,
2962                                 (ulong)offsetof(
2963                                         struct vxge_hw_mrpcim_reg,
2964                                         rts_mgr_cbasin_cfg),
2965                                 &val64);
2966                 if (status == VXGE_HW_OK) {
2967                         val64 &= ~vpath_vector;
2968                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2969                                         vxge_hw_mgmt_reg_type_mrpcim,
2970                                         0,
2971                                         (ulong)offsetof(
2972                                                 struct vxge_hw_mrpcim_reg,
2973                                                 rts_mgr_cbasin_cfg),
2974                                         val64);
2975                 }
2976
2977                 /* Remove the function 0 from promiscuous mode */
2978                 vxge_hw_mgmt_reg_write(vdev->devh,
2979                         vxge_hw_mgmt_reg_type_mrpcim,
2980                         0,
2981                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2982                                 rxmac_authorize_all_addr),
2983                         0);
2984
2985                 vxge_hw_mgmt_reg_write(vdev->devh,
2986                         vxge_hw_mgmt_reg_type_mrpcim,
2987                         0,
2988                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2989                                 rxmac_authorize_all_vid),
2990                         0);
2991
2992                 smp_wmb();
2993         }
2994
2995         if (vdev->titan1)
2996                 del_timer_sync(&vdev->vp_lockup_timer);
2997
2998         del_timer_sync(&vdev->vp_reset_timer);
2999
3000         if (do_io)
3001                 vxge_hw_device_wait_receive_idle(hldev);
3002
3003         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3004
3005         /* Disable napi */
3006         if (vdev->config.intr_type != MSI_X)
3007                 napi_disable(&vdev->napi);
3008         else {
3009                 for (i = 0; i < vdev->no_of_vpath; i++)
3010                         napi_disable(&vdev->vpaths[i].ring.napi);
3011         }
3012
3013         netif_carrier_off(vdev->ndev);
3014         netdev_notice(vdev->ndev, "Link Down\n");
3015         netif_tx_stop_all_queues(vdev->ndev);
3016
3017         /* Note that at this point xmit() is stopped by upper layer */
3018         if (do_io)
3019                 vxge_hw_device_intr_disable(vdev->devh);
3020
3021         vxge_rem_isr(vdev);
3022
3023         vxge_napi_del_all(vdev);
3024
3025         if (do_io)
3026                 vxge_reset_all_vpaths(vdev);
3027
3028         vxge_close_vpaths(vdev, 0);
3029
3030         vxge_debug_entryexit(VXGE_TRACE,
3031                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3032
3033         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3034
3035         return 0;
3036 }
3037
3038 /**
3039  * vxge_close
3040  * @dev: device pointer.
3041  *
3042  * This is the stop entry point of the driver. It needs to undo exactly
3043  * whatever was done by the open entry point, thus it's usually referred to
3044  * as the close function.Among other things this function mainly stops the
3045  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3046  * Return value: '0' on success and an appropriate (-)ve integer as
3047  * defined in errno.h file on failure.
3048  */
3049 static int vxge_close(struct net_device *dev)
3050 {
3051         do_vxge_close(dev, 1);
3052         return 0;
3053 }
3054
3055 /**
3056  * vxge_change_mtu
3057  * @dev: net device pointer.
3058  * @new_mtu :the new MTU size for the device.
3059  *
3060  * A driver entry point to change MTU size for the device. Before changing
3061  * the MTU the device must be stopped.
3062  */
3063 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3064 {
3065         struct vxgedev *vdev = netdev_priv(dev);
3066
3067         vxge_debug_entryexit(vdev->level_trace,
3068                 "%s:%d", __func__, __LINE__);
3069
3070         /* check if device is down already */
3071         if (unlikely(!is_vxge_card_up(vdev))) {
3072                 /* just store new value, will use later on open() */
3073                 dev->mtu = new_mtu;
3074                 vxge_debug_init(vdev->level_err,
3075                         "%s", "device is down on MTU change");
3076                 return 0;
3077         }
3078
3079         vxge_debug_init(vdev->level_trace,
3080                 "trying to apply new MTU %d", new_mtu);
3081
3082         if (vxge_close(dev))
3083                 return -EIO;
3084
3085         dev->mtu = new_mtu;
3086         vdev->mtu = new_mtu;
3087
3088         if (vxge_open(dev))
3089                 return -EIO;
3090
3091         vxge_debug_init(vdev->level_trace,
3092                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3093
3094         vxge_debug_entryexit(vdev->level_trace,
3095                 "%s:%d  Exiting...", __func__, __LINE__);
3096
3097         return 0;
3098 }
3099
3100 /**
3101  * vxge_get_stats64
3102  * @dev: pointer to the device structure
3103  * @stats: pointer to struct rtnl_link_stats64
3104  *
3105  */
3106 static void
3107 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3108 {
3109         struct vxgedev *vdev = netdev_priv(dev);
3110         int k;
3111
3112         /* net_stats already zeroed by caller */
3113         for (k = 0; k < vdev->no_of_vpath; k++) {
3114                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3115                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3116                 unsigned int start;
3117                 u64 packets, bytes, multicast;
3118
3119                 do {
3120                         start = u64_stats_fetch_begin_irq(&rxstats->syncp);
3121
3122                         packets   = rxstats->rx_frms;
3123                         multicast = rxstats->rx_mcast;
3124                         bytes     = rxstats->rx_bytes;
3125                 } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start));
3126
3127                 net_stats->rx_packets += packets;
3128                 net_stats->rx_bytes += bytes;
3129                 net_stats->multicast += multicast;
3130
3131                 net_stats->rx_errors += rxstats->rx_errors;
3132                 net_stats->rx_dropped += rxstats->rx_dropped;
3133
3134                 do {
3135                         start = u64_stats_fetch_begin_irq(&txstats->syncp);
3136
3137                         packets = txstats->tx_frms;
3138                         bytes   = txstats->tx_bytes;
3139                 } while (u64_stats_fetch_retry_irq(&txstats->syncp, start));
3140
3141                 net_stats->tx_packets += packets;
3142                 net_stats->tx_bytes += bytes;
3143                 net_stats->tx_errors += txstats->tx_errors;
3144         }
3145 }
3146
3147 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3148 {
3149         enum vxge_hw_status status;
3150         u64 val64;
3151
3152         /* Timestamp is passed to the driver via the FCS, therefore we
3153          * must disable the FCS stripping by the adapter.  Since this is
3154          * required for the driver to load (due to a hardware bug),
3155          * there is no need to do anything special here.
3156          */
3157         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3158                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3159                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3160
3161         status = vxge_hw_mgmt_reg_write(devh,
3162                                         vxge_hw_mgmt_reg_type_mrpcim,
3163                                         0,
3164                                         offsetof(struct vxge_hw_mrpcim_reg,
3165                                                  xmac_timestamp),
3166                                         val64);
3167         vxge_hw_device_flush_io(devh);
3168         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3169         return status;
3170 }
3171
3172 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3173 {
3174         struct hwtstamp_config config;
3175         int i;
3176
3177         if (copy_from_user(&config, data, sizeof(config)))
3178                 return -EFAULT;
3179
3180         /* reserved for future extensions */
3181         if (config.flags)
3182                 return -EINVAL;
3183
3184         /* Transmit HW Timestamp not supported */
3185         switch (config.tx_type) {
3186         case HWTSTAMP_TX_OFF:
3187                 break;
3188         case HWTSTAMP_TX_ON:
3189         default:
3190                 return -ERANGE;
3191         }
3192
3193         switch (config.rx_filter) {
3194         case HWTSTAMP_FILTER_NONE:
3195                 vdev->rx_hwts = 0;
3196                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3197                 break;
3198
3199         case HWTSTAMP_FILTER_ALL:
3200         case HWTSTAMP_FILTER_SOME:
3201         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3202         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3203         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3204         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3205         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3206         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3207         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3208         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3209         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3210         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3211         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3212         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3213         case HWTSTAMP_FILTER_NTP_ALL:
3214                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3215                         return -EFAULT;
3216
3217                 vdev->rx_hwts = 1;
3218                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3219                 break;
3220
3221         default:
3222                  return -ERANGE;
3223         }
3224
3225         for (i = 0; i < vdev->no_of_vpath; i++)
3226                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3227
3228         if (copy_to_user(data, &config, sizeof(config)))
3229                 return -EFAULT;
3230
3231         return 0;
3232 }
3233
3234 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3235 {
3236         struct hwtstamp_config config;
3237
3238         config.flags = 0;
3239         config.tx_type = HWTSTAMP_TX_OFF;
3240         config.rx_filter = (vdev->rx_hwts ?
3241                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3242
3243         if (copy_to_user(data, &config, sizeof(config)))
3244                 return -EFAULT;
3245
3246         return 0;
3247 }
3248
3249 /**
3250  * vxge_ioctl
3251  * @dev: Device pointer.
3252  * @ifr: An IOCTL specific structure, that can contain a pointer to
3253  *       a proprietary structure used to pass information to the driver.
3254  * @cmd: This is used to distinguish between the different commands that
3255  *       can be passed to the IOCTL functions.
3256  *
3257  * Entry point for the Ioctl.
3258  */
3259 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3260 {
3261         struct vxgedev *vdev = netdev_priv(dev);
3262
3263         switch (cmd) {
3264         case SIOCSHWTSTAMP:
3265                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3266         case SIOCGHWTSTAMP:
3267                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3268         default:
3269                 return -EOPNOTSUPP;
3270         }
3271 }
3272
3273 /**
3274  * vxge_tx_watchdog
3275  * @dev: pointer to net device structure
3276  *
3277  * Watchdog for transmit side.
3278  * This function is triggered if the Tx Queue is stopped
3279  * for a pre-defined amount of time when the Interface is still up.
3280  */
3281 static void vxge_tx_watchdog(struct net_device *dev)
3282 {
3283         struct vxgedev *vdev;
3284
3285         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3286
3287         vdev = netdev_priv(dev);
3288
3289         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3290
3291         schedule_work(&vdev->reset_task);
3292         vxge_debug_entryexit(VXGE_TRACE,
3293                 "%s:%d  Exiting...", __func__, __LINE__);
3294 }
3295
3296 /**
3297  * vxge_vlan_rx_add_vid
3298  * @dev: net device pointer.
3299  * @proto: vlan protocol
3300  * @vid: vid
3301  *
3302  * Add the vlan id to the devices vlan id table
3303  */
3304 static int
3305 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3306 {
3307         struct vxgedev *vdev = netdev_priv(dev);
3308         struct vxge_vpath *vpath;
3309         int vp_id;
3310
3311         /* Add these vlan to the vid table */
3312         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3313                 vpath = &vdev->vpaths[vp_id];
3314                 if (!vpath->is_open)
3315                         continue;
3316                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3317         }
3318         set_bit(vid, vdev->active_vlans);
3319         return 0;
3320 }
3321
3322 /**
3323  * vxge_vlan_rx_kill_vid
3324  * @dev: net device pointer.
3325  * @proto: vlan protocol
3326  * @vid: vid
3327  *
3328  * Remove the vlan id from the device's vlan id table
3329  */
3330 static int
3331 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3332 {
3333         struct vxgedev *vdev = netdev_priv(dev);
3334         struct vxge_vpath *vpath;
3335         int vp_id;
3336
3337         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3338
3339         /* Delete this vlan from the vid table */
3340         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3341                 vpath = &vdev->vpaths[vp_id];
3342                 if (!vpath->is_open)
3343                         continue;
3344                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3345         }
3346         vxge_debug_entryexit(VXGE_TRACE,
3347                 "%s:%d  Exiting...", __func__, __LINE__);
3348         clear_bit(vid, vdev->active_vlans);
3349         return 0;
3350 }
3351
3352 static const struct net_device_ops vxge_netdev_ops = {
3353         .ndo_open               = vxge_open,
3354         .ndo_stop               = vxge_close,
3355         .ndo_get_stats64        = vxge_get_stats64,
3356         .ndo_start_xmit         = vxge_xmit,
3357         .ndo_validate_addr      = eth_validate_addr,
3358         .ndo_set_rx_mode        = vxge_set_multicast,
3359         .ndo_do_ioctl           = vxge_ioctl,
3360         .ndo_set_mac_address    = vxge_set_mac_addr,
3361         .ndo_change_mtu         = vxge_change_mtu,
3362         .ndo_fix_features       = vxge_fix_features,
3363         .ndo_set_features       = vxge_set_features,
3364         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3365         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3366         .ndo_tx_timeout         = vxge_tx_watchdog,
3367 #ifdef CONFIG_NET_POLL_CONTROLLER
3368         .ndo_poll_controller    = vxge_netpoll,
3369 #endif
3370 };
3371
3372 static int vxge_device_register(struct __vxge_hw_device *hldev,
3373                                 struct vxge_config *config, int high_dma,
3374                                 int no_of_vpath, struct vxgedev **vdev_out)
3375 {
3376         struct net_device *ndev;
3377         enum vxge_hw_status status = VXGE_HW_OK;
3378         struct vxgedev *vdev;
3379         int ret = 0, no_of_queue = 1;
3380         u64 stat;
3381
3382         *vdev_out = NULL;
3383         if (config->tx_steering_type)
3384                 no_of_queue = no_of_vpath;
3385
3386         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3387                         no_of_queue);
3388         if (ndev == NULL) {
3389                 vxge_debug_init(
3390                         vxge_hw_device_trace_level_get(hldev),
3391                 "%s : device allocation failed", __func__);
3392                 ret = -ENODEV;
3393                 goto _out0;
3394         }
3395
3396         vxge_debug_entryexit(
3397                 vxge_hw_device_trace_level_get(hldev),
3398                 "%s: %s:%d  Entering...",
3399                 ndev->name, __func__, __LINE__);
3400
3401         vdev = netdev_priv(ndev);
3402         memset(vdev, 0, sizeof(struct vxgedev));
3403
3404         vdev->ndev = ndev;
3405         vdev->devh = hldev;
3406         vdev->pdev = hldev->pdev;
3407         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3408         vdev->rx_hwts = 0;
3409         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3410
3411         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3412
3413         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3414                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3415                 NETIF_F_TSO | NETIF_F_TSO6 |
3416                 NETIF_F_HW_VLAN_CTAG_TX;
3417         if (vdev->config.rth_steering != NO_STEERING)
3418                 ndev->hw_features |= NETIF_F_RXHASH;
3419
3420         ndev->features |= ndev->hw_features |
3421                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3422
3423
3424         ndev->netdev_ops = &vxge_netdev_ops;
3425
3426         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3427         INIT_WORK(&vdev->reset_task, vxge_reset);
3428
3429         vxge_initialize_ethtool_ops(ndev);
3430
3431         /* Allocate memory for vpath */
3432         vdev->vpaths = kcalloc(no_of_vpath, sizeof(struct vxge_vpath),
3433                                GFP_KERNEL);
3434         if (!vdev->vpaths) {
3435                 vxge_debug_init(VXGE_ERR,
3436                         "%s: vpath memory allocation failed",
3437                         vdev->ndev->name);
3438                 ret = -ENOMEM;
3439                 goto _out1;
3440         }
3441
3442         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3443                 "%s : checksumming enabled", __func__);
3444
3445         if (high_dma) {
3446                 ndev->features |= NETIF_F_HIGHDMA;
3447                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3448                         "%s : using High DMA", __func__);
3449         }
3450
3451         /* MTU range: 68 - 9600 */
3452         ndev->min_mtu = VXGE_HW_MIN_MTU;
3453         ndev->max_mtu = VXGE_HW_MAX_MTU;
3454
3455         ret = register_netdev(ndev);
3456         if (ret) {
3457                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3458                         "%s: %s : device registration failed!",
3459                         ndev->name, __func__);
3460                 goto _out2;
3461         }
3462
3463         /*  Set the factory defined MAC address initially */
3464         ndev->addr_len = ETH_ALEN;
3465
3466         /* Make Link state as off at this point, when the Link change
3467          * interrupt comes the state will be automatically changed to
3468          * the right state.
3469          */
3470         netif_carrier_off(ndev);
3471
3472         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3473                 "%s: Ethernet device registered",
3474                 ndev->name);
3475
3476         hldev->ndev = ndev;
3477         *vdev_out = vdev;
3478
3479         /* Resetting the Device stats */
3480         status = vxge_hw_mrpcim_stats_access(
3481                                 hldev,
3482                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3483                                 0,
3484                                 0,
3485                                 &stat);
3486
3487         if (status == VXGE_HW_ERR_PRIVILEGED_OPERATION)
3488                 vxge_debug_init(
3489                         vxge_hw_device_trace_level_get(hldev),
3490                         "%s: device stats clear returns"
3491                         "VXGE_HW_ERR_PRIVILEGED_OPERATION", ndev->name);
3492
3493         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3494                 "%s: %s:%d  Exiting...",
3495                 ndev->name, __func__, __LINE__);
3496
3497         return ret;
3498 _out2:
3499         kfree(vdev->vpaths);
3500 _out1:
3501         free_netdev(ndev);
3502 _out0:
3503         return ret;
3504 }
3505
3506 /*
3507  * vxge_device_unregister
3508  *
3509  * This function will unregister and free network device
3510  */
3511 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3512 {
3513         struct vxgedev *vdev;
3514         struct net_device *dev;
3515         char buf[IFNAMSIZ];
3516
3517         dev = hldev->ndev;
3518         vdev = netdev_priv(dev);
3519
3520         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3521                              __func__, __LINE__);
3522
3523         strlcpy(buf, dev->name, IFNAMSIZ);
3524
3525         flush_work(&vdev->reset_task);
3526
3527         /* in 2.6 will call stop() if device is up */
3528         unregister_netdev(dev);
3529
3530         kfree(vdev->vpaths);
3531
3532         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3533                         buf);
3534         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3535                              __func__, __LINE__);
3536
3537         /* we are safe to free it now */
3538         free_netdev(dev);
3539 }
3540
3541 /*
3542  * vxge_callback_crit_err
3543  *
3544  * This function is called by the alarm handler in interrupt context.
3545  * Driver must analyze it based on the event type.
3546  */
3547 static void
3548 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3549                         enum vxge_hw_event type, u64 vp_id)
3550 {
3551         struct net_device *dev = hldev->ndev;
3552         struct vxgedev *vdev = netdev_priv(dev);
3553         struct vxge_vpath *vpath = NULL;
3554         int vpath_idx;
3555
3556         vxge_debug_entryexit(vdev->level_trace,
3557                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3558
3559         /* Note: This event type should be used for device wide
3560          * indications only - Serious errors, Slot freeze and critical errors
3561          */
3562         vdev->cric_err_event = type;
3563
3564         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3565                 vpath = &vdev->vpaths[vpath_idx];
3566                 if (vpath->device_id == vp_id)
3567                         break;
3568         }
3569
3570         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3571                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3572                         vxge_debug_init(VXGE_ERR,
3573                                 "%s: Slot is frozen", vdev->ndev->name);
3574                 } else if (type == VXGE_HW_EVENT_SERR) {
3575                         vxge_debug_init(VXGE_ERR,
3576                                 "%s: Encountered Serious Error",
3577                                 vdev->ndev->name);
3578                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3579                         vxge_debug_init(VXGE_ERR,
3580                                 "%s: Encountered Critical Error",
3581                                 vdev->ndev->name);
3582         }
3583
3584         if ((type == VXGE_HW_EVENT_SERR) ||
3585                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3586                 if (unlikely(vdev->exec_mode))
3587                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3588         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3589                 vxge_hw_device_mask_all(hldev);
3590                 if (unlikely(vdev->exec_mode))
3591                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3592         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3593                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3594
3595                 if (unlikely(vdev->exec_mode))
3596                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3597                 else {
3598                         /* check if this vpath is already set for reset */
3599                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3600
3601                                 /* disable interrupts for this vpath */
3602                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3603
3604                                 /* stop the queue for this vpath */
3605                                 netif_tx_stop_queue(vpath->fifo.txq);
3606                         }
3607                 }
3608         }
3609
3610         vxge_debug_entryexit(vdev->level_trace,
3611                 "%s: %s:%d  Exiting...",
3612                 vdev->ndev->name, __func__, __LINE__);
3613 }
3614
3615 static void verify_bandwidth(void)
3616 {
3617         int i, band_width, total = 0, equal_priority = 0;
3618
3619         /* 1. If user enters 0 for some fifo, give equal priority to all */
3620         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3621                 if (bw_percentage[i] == 0) {
3622                         equal_priority = 1;
3623                         break;
3624                 }
3625         }
3626
3627         if (!equal_priority) {
3628                 /* 2. If sum exceeds 100, give equal priority to all */
3629                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3630                         if (bw_percentage[i] == 0xFF)
3631                                 break;
3632
3633                         total += bw_percentage[i];
3634                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3635                                 equal_priority = 1;
3636                                 break;
3637                         }
3638                 }
3639         }
3640
3641         if (!equal_priority) {
3642                 /* Is all the bandwidth consumed? */
3643                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3644                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3645                                 /* Split rest of bw equally among next VPs*/
3646                                 band_width =
3647                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3648                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3649                                 if (band_width < 2) /* min of 2% */
3650                                         equal_priority = 1;
3651                                 else {
3652                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3653                                                 i++)
3654                                                 bw_percentage[i] =
3655                                                         band_width;
3656                                 }
3657                         }
3658                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3659                         equal_priority = 1;
3660         }
3661
3662         if (equal_priority) {
3663                 vxge_debug_init(VXGE_ERR,
3664                         "%s: Assigning equal bandwidth to all the vpaths",
3665                         VXGE_DRIVER_NAME);
3666                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3667                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3668                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3669                         bw_percentage[i] = bw_percentage[0];
3670         }
3671 }
3672
3673 /*
3674  * Vpath configuration
3675  */
3676 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3677                               u64 vpath_mask, struct vxge_config *config_param)
3678 {
3679         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3680         u32 txdl_size, txdl_per_memblock;
3681
3682         temp = driver_config->vpath_per_dev;
3683         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3684                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3685                 /* No more CPU. Return vpath number as zero.*/
3686                 if (driver_config->g_no_cpus == -1)
3687                         return 0;
3688
3689                 if (!driver_config->g_no_cpus)
3690                         driver_config->g_no_cpus =
3691                                 netif_get_num_default_rss_queues();
3692
3693                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3694                 if (!driver_config->vpath_per_dev)
3695                         driver_config->vpath_per_dev = 1;
3696
3697                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3698                         if (!vxge_bVALn(vpath_mask, i, 1))
3699                                 continue;
3700                         else
3701                                 default_no_vpath++;
3702                 if (default_no_vpath < driver_config->vpath_per_dev)
3703                         driver_config->vpath_per_dev = default_no_vpath;
3704
3705                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3706                                 (driver_config->vpath_per_dev * 2);
3707                 if (driver_config->g_no_cpus <= 0)
3708                         driver_config->g_no_cpus = -1;
3709         }
3710
3711         if (driver_config->vpath_per_dev == 1) {
3712                 vxge_debug_ll_config(VXGE_TRACE,
3713                         "%s: Disable tx and rx steering, "
3714                         "as single vpath is configured", VXGE_DRIVER_NAME);
3715                 config_param->rth_steering = NO_STEERING;
3716                 config_param->tx_steering_type = NO_STEERING;
3717                 device_config->rth_en = 0;
3718         }
3719
3720         /* configure bandwidth */
3721         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3722                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3723
3724         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3725                 device_config->vp_config[i].vp_id = i;
3726                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3727                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3728                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3729                                 vxge_debug_ll_config(VXGE_TRACE,
3730                                         "%s: vpath: %d is not available",
3731                                         VXGE_DRIVER_NAME, i);
3732                                 continue;
3733                         } else {
3734                                 vxge_debug_ll_config(VXGE_TRACE,
3735                                         "%s: vpath: %d available",
3736                                         VXGE_DRIVER_NAME, i);
3737                                 no_of_vpaths++;
3738                         }
3739                 } else {
3740                         vxge_debug_ll_config(VXGE_TRACE,
3741                                 "%s: vpath: %d is not configured, "
3742                                 "max_config_vpath exceeded",
3743                                 VXGE_DRIVER_NAME, i);
3744                         break;
3745                 }
3746
3747                 /* Configure Tx fifo's */
3748                 device_config->vp_config[i].fifo.enable =
3749                                                 VXGE_HW_FIFO_ENABLE;
3750                 device_config->vp_config[i].fifo.max_frags =
3751                                 MAX_SKB_FRAGS + 1;
3752                 device_config->vp_config[i].fifo.memblock_size =
3753                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3754
3755                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3756                                 sizeof(struct vxge_hw_fifo_txd);
3757                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3758
3759                 device_config->vp_config[i].fifo.fifo_blocks =
3760                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3761
3762                 device_config->vp_config[i].fifo.intr =
3763                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3764
3765                 /* Configure tti properties */
3766                 device_config->vp_config[i].tti.intr_enable =
3767                                         VXGE_HW_TIM_INTR_ENABLE;
3768
3769                 device_config->vp_config[i].tti.btimer_val =
3770                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3771
3772                 device_config->vp_config[i].tti.timer_ac_en =
3773                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3774
3775                 /* For msi-x with napi (each vector has a handler of its own) -
3776                  * Set CI to OFF for all vpaths
3777                  */
3778                 device_config->vp_config[i].tti.timer_ci_en =
3779                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3780
3781                 device_config->vp_config[i].tti.timer_ri_en =
3782                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3783
3784                 device_config->vp_config[i].tti.util_sel =
3785                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3786
3787                 device_config->vp_config[i].tti.ltimer_val =
3788                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3789
3790                 device_config->vp_config[i].tti.rtimer_val =
3791                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3792
3793                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3794                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3795                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3796                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3797                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3798                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3799                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3800
3801                 /* Configure Rx rings */
3802                 device_config->vp_config[i].ring.enable  =
3803                                                 VXGE_HW_RING_ENABLE;
3804
3805                 device_config->vp_config[i].ring.ring_blocks  =
3806                                                 VXGE_HW_DEF_RING_BLOCKS;
3807
3808                 device_config->vp_config[i].ring.buffer_mode =
3809                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3810
3811                 device_config->vp_config[i].ring.rxds_limit  =
3812                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3813
3814                 device_config->vp_config[i].ring.scatter_mode =
3815                                         VXGE_HW_RING_SCATTER_MODE_A;
3816
3817                 /* Configure rti properties */
3818                 device_config->vp_config[i].rti.intr_enable =
3819                                         VXGE_HW_TIM_INTR_ENABLE;
3820
3821                 device_config->vp_config[i].rti.btimer_val =
3822                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3823
3824                 device_config->vp_config[i].rti.timer_ac_en =
3825                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3826
3827                 device_config->vp_config[i].rti.timer_ci_en =
3828                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3829
3830                 device_config->vp_config[i].rti.timer_ri_en =
3831                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3832
3833                 device_config->vp_config[i].rti.util_sel =
3834                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3835
3836                 device_config->vp_config[i].rti.urange_a =
3837                                                 RTI_RX_URANGE_A;
3838                 device_config->vp_config[i].rti.urange_b =
3839                                                 RTI_RX_URANGE_B;
3840                 device_config->vp_config[i].rti.urange_c =
3841                                                 RTI_RX_URANGE_C;
3842                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3843                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3844                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3845                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3846
3847                 device_config->vp_config[i].rti.rtimer_val =
3848                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3849
3850                 device_config->vp_config[i].rti.ltimer_val =
3851                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3852
3853                 device_config->vp_config[i].rpa_strip_vlan_tag =
3854                         vlan_tag_strip;
3855         }
3856
3857         driver_config->vpath_per_dev = temp;
3858         return no_of_vpaths;
3859 }
3860
3861 /* initialize device configuratrions */
3862 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3863                                     int *intr_type)
3864 {
3865         /* Used for CQRQ/SRQ. */
3866         device_config->dma_blockpool_initial =
3867                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3868
3869         device_config->dma_blockpool_max =
3870                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3871
3872         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3873                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3874
3875         if (!IS_ENABLED(CONFIG_PCI_MSI)) {
3876                 vxge_debug_init(VXGE_ERR,
3877                         "%s: This Kernel does not support "
3878                         "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3879                 *intr_type = INTA;
3880         }
3881
3882         /* Configure whether MSI-X or IRQL. */
3883         switch (*intr_type) {
3884         case INTA:
3885                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3886                 break;
3887
3888         case MSI_X:
3889                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3890                 break;
3891         }
3892
3893         /* Timer period between device poll */
3894         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3895
3896         /* Configure mac based steering. */
3897         device_config->rts_mac_en = addr_learn_en;
3898
3899         /* Configure Vpaths */
3900         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3901
3902         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3903                         __func__);
3904         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3905                         device_config->intr_mode);
3906         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3907                         device_config->device_poll_millis);
3908         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3909                         device_config->rth_en);
3910         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3911                         device_config->rth_it_type);
3912 }
3913
3914 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3915 {
3916         int i;
3917
3918         vxge_debug_init(VXGE_TRACE,
3919                 "%s: %d Vpath(s) opened",
3920                 vdev->ndev->name, vdev->no_of_vpath);
3921
3922         switch (vdev->config.intr_type) {
3923         case INTA:
3924                 vxge_debug_init(VXGE_TRACE,
3925                         "%s: Interrupt type INTA", vdev->ndev->name);
3926                 break;
3927
3928         case MSI_X:
3929                 vxge_debug_init(VXGE_TRACE,
3930                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3931                 break;
3932         }
3933
3934         if (vdev->config.rth_steering) {
3935                 vxge_debug_init(VXGE_TRACE,
3936                         "%s: RTH steering enabled for TCP_IPV4",
3937                         vdev->ndev->name);
3938         } else {
3939                 vxge_debug_init(VXGE_TRACE,
3940                         "%s: RTH steering disabled", vdev->ndev->name);
3941         }
3942
3943         switch (vdev->config.tx_steering_type) {
3944         case NO_STEERING:
3945                 vxge_debug_init(VXGE_TRACE,
3946                         "%s: Tx steering disabled", vdev->ndev->name);
3947                 break;
3948         case TX_PRIORITY_STEERING:
3949                 vxge_debug_init(VXGE_TRACE,
3950                         "%s: Unsupported tx steering option",
3951                         vdev->ndev->name);
3952                 vxge_debug_init(VXGE_TRACE,
3953                         "%s: Tx steering disabled", vdev->ndev->name);
3954                 vdev->config.tx_steering_type = 0;
3955                 break;
3956         case TX_VLAN_STEERING:
3957                 vxge_debug_init(VXGE_TRACE,
3958                         "%s: Unsupported tx steering option",
3959                         vdev->ndev->name);
3960                 vxge_debug_init(VXGE_TRACE,
3961                         "%s: Tx steering disabled", vdev->ndev->name);
3962                 vdev->config.tx_steering_type = 0;
3963                 break;
3964         case TX_MULTIQ_STEERING:
3965                 vxge_debug_init(VXGE_TRACE,
3966                         "%s: Tx multiqueue steering enabled",
3967                         vdev->ndev->name);
3968                 break;
3969         case TX_PORT_STEERING:
3970                 vxge_debug_init(VXGE_TRACE,
3971                         "%s: Tx port steering enabled",
3972                         vdev->ndev->name);
3973                 break;
3974         default:
3975                 vxge_debug_init(VXGE_ERR,
3976                         "%s: Unsupported tx steering type",
3977                         vdev->ndev->name);
3978                 vxge_debug_init(VXGE_TRACE,
3979                         "%s: Tx steering disabled", vdev->ndev->name);
3980                 vdev->config.tx_steering_type = 0;
3981         }
3982
3983         if (vdev->config.addr_learn_en)
3984                 vxge_debug_init(VXGE_TRACE,
3985                         "%s: MAC Address learning enabled", vdev->ndev->name);
3986
3987         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3988                 if (!vxge_bVALn(vpath_mask, i, 1))
3989                         continue;
3990                 vxge_debug_ll_config(VXGE_TRACE,
3991                         "%s: MTU size - %d", vdev->ndev->name,
3992                         ((vdev->devh))->
3993                                 config.vp_config[i].mtu);
3994                 vxge_debug_init(VXGE_TRACE,
3995                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3996                         ((vdev->devh))->
3997                                 config.vp_config[i].rpa_strip_vlan_tag
3998                         ? "Enabled" : "Disabled");
3999                 vxge_debug_ll_config(VXGE_TRACE,
4000                         "%s: Max frags : %d", vdev->ndev->name,
4001                         ((vdev->devh))->
4002                                 config.vp_config[i].fifo.max_frags);
4003                 break;
4004         }
4005 }
4006
4007 #ifdef CONFIG_PM
4008 /**
4009  * vxge_pm_suspend - vxge power management suspend entry point
4010  *
4011  */
4012 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4013 {
4014         return -ENOSYS;
4015 }
4016 /**
4017  * vxge_pm_resume - vxge power management resume entry point
4018  *
4019  */
4020 static int vxge_pm_resume(struct pci_dev *pdev)
4021 {
4022         return -ENOSYS;
4023 }
4024
4025 #endif
4026
4027 /**
4028  * vxge_io_error_detected - called when PCI error is detected
4029  * @pdev: Pointer to PCI device
4030  * @state: The current pci connection state
4031  *
4032  * This function is called after a PCI bus error affecting
4033  * this device has been detected.
4034  */
4035 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4036                                                 pci_channel_state_t state)
4037 {
4038         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4039         struct net_device *netdev = hldev->ndev;
4040
4041         netif_device_detach(netdev);
4042
4043         if (state == pci_channel_io_perm_failure)
4044                 return PCI_ERS_RESULT_DISCONNECT;
4045
4046         if (netif_running(netdev)) {
4047                 /* Bring down the card, while avoiding PCI I/O */
4048                 do_vxge_close(netdev, 0);
4049         }
4050
4051         pci_disable_device(pdev);
4052
4053         return PCI_ERS_RESULT_NEED_RESET;
4054 }
4055
4056 /**
4057  * vxge_io_slot_reset - called after the pci bus has been reset.
4058  * @pdev: Pointer to PCI device
4059  *
4060  * Restart the card from scratch, as if from a cold-boot.
4061  * At this point, the card has exprienced a hard reset,
4062  * followed by fixups by BIOS, and has its config space
4063  * set up identically to what it was at cold boot.
4064  */
4065 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4066 {
4067         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4068         struct net_device *netdev = hldev->ndev;
4069
4070         struct vxgedev *vdev = netdev_priv(netdev);
4071
4072         if (pci_enable_device(pdev)) {
4073                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4074                 return PCI_ERS_RESULT_DISCONNECT;
4075         }
4076
4077         pci_set_master(pdev);
4078         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4079
4080         return PCI_ERS_RESULT_RECOVERED;
4081 }
4082
4083 /**
4084  * vxge_io_resume - called when traffic can start flowing again.
4085  * @pdev: Pointer to PCI device
4086  *
4087  * This callback is called when the error recovery driver tells
4088  * us that its OK to resume normal operation.
4089  */
4090 static void vxge_io_resume(struct pci_dev *pdev)
4091 {
4092         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4093         struct net_device *netdev = hldev->ndev;
4094
4095         if (netif_running(netdev)) {
4096                 if (vxge_open(netdev)) {
4097                         netdev_err(netdev,
4098                                    "Can't bring device back up after reset\n");
4099                         return;
4100                 }
4101         }
4102
4103         netif_device_attach(netdev);
4104 }
4105
4106 static inline u32 vxge_get_num_vfs(u64 function_mode)
4107 {
4108         u32 num_functions = 0;
4109
4110         switch (function_mode) {
4111         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4112         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4113                 num_functions = 8;
4114                 break;
4115         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4116                 num_functions = 1;
4117                 break;
4118         case VXGE_HW_FUNCTION_MODE_SRIOV:
4119         case VXGE_HW_FUNCTION_MODE_MRIOV:
4120         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4121                 num_functions = 17;
4122                 break;
4123         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4124                 num_functions = 4;
4125                 break;
4126         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4127                 num_functions = 2;
4128                 break;
4129         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4130                 num_functions = 8; /* TODO */
4131                 break;
4132         }
4133         return num_functions;
4134 }
4135
4136 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4137 {
4138         struct __vxge_hw_device *hldev = vdev->devh;
4139         u32 maj, min, bld, cmaj, cmin, cbld;
4140         enum vxge_hw_status status;
4141         const struct firmware *fw;
4142         int ret;
4143
4144         ret = reject_firmware(&fw, fw_name, &vdev->pdev->dev);
4145         if (ret) {
4146                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4147                                 VXGE_DRIVER_NAME, fw_name);
4148                 goto out;
4149         }
4150
4151         /* Load the new firmware onto the adapter */
4152         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4153         if (status != VXGE_HW_OK) {
4154                 vxge_debug_init(VXGE_ERR,
4155                                 "%s: FW image download to adapter failed '%s'.",
4156                                 VXGE_DRIVER_NAME, fw_name);
4157                 ret = -EIO;
4158                 goto out;
4159         }
4160
4161         /* Read the version of the new firmware */
4162         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4163         if (status != VXGE_HW_OK) {
4164                 vxge_debug_init(VXGE_ERR,
4165                                 "%s: Upgrade read version failed '%s'.",
4166                                 VXGE_DRIVER_NAME, fw_name);
4167                 ret = -EIO;
4168                 goto out;
4169         }
4170
4171         cmaj = vdev->config.device_hw_info.fw_version.major;
4172         cmin = vdev->config.device_hw_info.fw_version.minor;
4173         cbld = vdev->config.device_hw_info.fw_version.build;
4174         /* It's possible the version in /lib/firmware is not the latest version.
4175          * If so, we could get into a loop of trying to upgrade to the latest
4176          * and flashing the older version.
4177          */
4178         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4179             !override) {
4180                 ret = -EINVAL;
4181                 goto out;
4182         }
4183
4184         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4185                maj, min, bld);
4186
4187         /* Flash the adapter with the new firmware */
4188         status = vxge_hw_flash_fw(hldev);
4189         if (status != VXGE_HW_OK) {
4190                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4191                                 VXGE_DRIVER_NAME, fw_name);
4192                 ret = -EIO;
4193                 goto out;
4194         }
4195
4196         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4197                "hard reset before using, thus requiring a system reboot or a "
4198                "hotplug event.\n");
4199
4200 out:
4201         release_firmware(fw);
4202         return ret;
4203 }
4204
4205 static int vxge_probe_fw_update(struct vxgedev *vdev)
4206 {
4207         u32 maj, min, bld;
4208         int ret, gpxe = 0;
4209         char *fw_name;
4210
4211         maj = vdev->config.device_hw_info.fw_version.major;
4212         min = vdev->config.device_hw_info.fw_version.minor;
4213         bld = vdev->config.device_hw_info.fw_version.build;
4214
4215         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4216                 return 0;
4217
4218         /* Ignore the build number when determining if the current firmware is
4219          * "too new" to load the driver
4220          */
4221         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4222                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4223                                 "version, unable to load driver\n",
4224                                 VXGE_DRIVER_NAME);
4225                 return -EINVAL;
4226         }
4227
4228         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4229          * work with this driver.
4230          */
4231         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4232                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4233                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4234                 return -EINVAL;
4235         }
4236
4237         /* If file not specified, determine gPXE or not */
4238         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4239                 int i;
4240                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4241                         if (vdev->devh->eprom_versions[i]) {
4242                                 gpxe = 1;
4243                                 break;
4244                         }
4245         }
4246         if (gpxe)
4247                 fw_name = "/*(DEBLOBBED)*/";
4248         else
4249                 fw_name = "/*(DEBLOBBED)*/";
4250
4251         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4252         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4253          * probe, so ignore them
4254          */
4255         if (ret != -EINVAL && ret != -ENOENT)
4256                 return -EIO;
4257         else
4258                 ret = 0;
4259
4260         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4261             VXGE_FW_VER(maj, min, 0)) {
4262                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4263                                 " be used with this driver.",
4264                                 VXGE_DRIVER_NAME, maj, min, bld);
4265                 return -EINVAL;
4266         }
4267
4268         return ret;
4269 }
4270
4271 static int is_sriov_initialized(struct pci_dev *pdev)
4272 {
4273         int pos;
4274         u16 ctrl;
4275
4276         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4277         if (pos) {
4278                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4279                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4280                         return 1;
4281         }
4282         return 0;
4283 }
4284
4285 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4286         .link_up = vxge_callback_link_up,
4287         .link_down = vxge_callback_link_down,
4288         .crit_err = vxge_callback_crit_err,
4289 };
4290
4291 /**
4292  * vxge_probe
4293  * @pdev : structure containing the PCI related information of the device.
4294  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4295  * Description:
4296  * This function is called when a new PCI device gets detected and initializes
4297  * it.
4298  * Return value:
4299  * returns 0 on success and negative on failure.
4300  *
4301  */
4302 static int
4303 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4304 {
4305         struct __vxge_hw_device *hldev;
4306         enum vxge_hw_status status;
4307         int ret;
4308         int high_dma = 0;
4309         u64 vpath_mask = 0;
4310         struct vxgedev *vdev;
4311         struct vxge_config *ll_config = NULL;
4312         struct vxge_hw_device_config *device_config = NULL;
4313         struct vxge_hw_device_attr attr;
4314         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4315         u8 *macaddr;
4316         struct vxge_mac_addrs *entry;
4317         static int bus = -1, device = -1;
4318         u32 host_type;
4319         u8 new_device = 0;
4320         enum vxge_hw_status is_privileged;
4321         u32 function_mode;
4322         u32 num_vfs = 0;
4323
4324         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4325         attr.pdev = pdev;
4326
4327         /* In SRIOV-17 mode, functions of the same adapter
4328          * can be deployed on different buses
4329          */
4330         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4331             !pdev->is_virtfn)
4332                 new_device = 1;
4333
4334         bus = pdev->bus->number;
4335         device = PCI_SLOT(pdev->devfn);
4336
4337         if (new_device) {
4338                 if (driver_config->config_dev_cnt &&
4339                    (driver_config->config_dev_cnt !=
4340                         driver_config->total_dev_cnt))
4341                         vxge_debug_init(VXGE_ERR,
4342                                 "%s: Configured %d of %d devices",
4343                                 VXGE_DRIVER_NAME,
4344                                 driver_config->config_dev_cnt,
4345                                 driver_config->total_dev_cnt);
4346                 driver_config->config_dev_cnt = 0;
4347                 driver_config->total_dev_cnt = 0;
4348         }
4349
4350         /* Now making the CPU based no of vpath calculation
4351          * applicable for individual functions as well.
4352          */
4353         driver_config->g_no_cpus = 0;
4354         driver_config->vpath_per_dev = max_config_vpath;
4355
4356         driver_config->total_dev_cnt++;
4357         if (++driver_config->config_dev_cnt > max_config_dev) {
4358                 ret = 0;
4359                 goto _exit0;
4360         }
4361
4362         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4363                 GFP_KERNEL);
4364         if (!device_config) {
4365                 ret = -ENOMEM;
4366                 vxge_debug_init(VXGE_ERR,
4367                         "device_config : malloc failed %s %d",
4368                         __FILE__, __LINE__);
4369                 goto _exit0;
4370         }
4371
4372         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4373         if (!ll_config) {
4374                 ret = -ENOMEM;
4375                 vxge_debug_init(VXGE_ERR,
4376                         "device_config : malloc failed %s %d",
4377                         __FILE__, __LINE__);
4378                 goto _exit0;
4379         }
4380         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4381         ll_config->intr_type = MSI_X;
4382         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4383         ll_config->rth_steering = RTH_STEERING;
4384
4385         /* get the default configuration parameters */
4386         vxge_hw_device_config_default_get(device_config);
4387
4388         /* initialize configuration parameters */
4389         vxge_device_config_init(device_config, &ll_config->intr_type);
4390
4391         ret = pci_enable_device(pdev);
4392         if (ret) {
4393                 vxge_debug_init(VXGE_ERR,
4394                         "%s : can not enable PCI device", __func__);
4395                 goto _exit0;
4396         }
4397
4398         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4399                 vxge_debug_ll_config(VXGE_TRACE,
4400                         "%s : using 64bit DMA", __func__);
4401
4402                 high_dma = 1;
4403
4404                 if (pci_set_consistent_dma_mask(pdev,
4405                                                 DMA_BIT_MASK(64))) {
4406                         vxge_debug_init(VXGE_ERR,
4407                                 "%s : unable to obtain 64bit DMA for "
4408                                 "consistent allocations", __func__);
4409                         ret = -ENOMEM;
4410                         goto _exit1;
4411                 }
4412         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4413                 vxge_debug_ll_config(VXGE_TRACE,
4414                         "%s : using 32bit DMA", __func__);
4415         } else {
4416                 ret = -ENOMEM;
4417                 goto _exit1;
4418         }
4419
4420         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4421         if (ret) {
4422                 vxge_debug_init(VXGE_ERR,
4423                         "%s : request regions failed", __func__);
4424                 goto _exit1;
4425         }
4426
4427         pci_set_master(pdev);
4428
4429         attr.bar0 = pci_ioremap_bar(pdev, 0);
4430         if (!attr.bar0) {
4431                 vxge_debug_init(VXGE_ERR,
4432                         "%s : cannot remap io memory bar0", __func__);
4433                 ret = -ENODEV;
4434                 goto _exit2;
4435         }
4436         vxge_debug_ll_config(VXGE_TRACE,
4437                 "pci ioremap bar0: %p:0x%llx",
4438                 attr.bar0,
4439                 (unsigned long long)pci_resource_start(pdev, 0));
4440
4441         status = vxge_hw_device_hw_info_get(attr.bar0,
4442                         &ll_config->device_hw_info);
4443         if (status != VXGE_HW_OK) {
4444                 vxge_debug_init(VXGE_ERR,
4445                         "%s: Reading of hardware info failed."
4446                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4447                 ret = -EINVAL;
4448                 goto _exit3;
4449         }
4450
4451         vpath_mask = ll_config->device_hw_info.vpath_mask;
4452         if (vpath_mask == 0) {
4453                 vxge_debug_ll_config(VXGE_TRACE,
4454                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4455                 ret = -EINVAL;
4456                 goto _exit3;
4457         }
4458
4459         vxge_debug_ll_config(VXGE_TRACE,
4460                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4461                 (unsigned long long)vpath_mask);
4462
4463         function_mode = ll_config->device_hw_info.function_mode;
4464         host_type = ll_config->device_hw_info.host_type;
4465         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4466                 ll_config->device_hw_info.func_id);
4467
4468         /* Check how many vpaths are available */
4469         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4470                 if (!((vpath_mask) & vxge_mBIT(i)))
4471                         continue;
4472                 max_vpath_supported++;
4473         }
4474
4475         if (new_device)
4476                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4477
4478         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4479         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4480            (ll_config->intr_type != INTA)) {
4481                 ret = pci_enable_sriov(pdev, num_vfs);
4482                 if (ret)
4483                         vxge_debug_ll_config(VXGE_ERR,
4484                                 "Failed in enabling SRIOV mode: %d\n", ret);
4485                         /* No need to fail out, as an error here is non-fatal */
4486         }
4487
4488         /*
4489          * Configure vpaths and get driver configured number of vpaths
4490          * which is less than or equal to the maximum vpaths per function.
4491          */
4492         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4493         if (!no_of_vpath) {
4494                 vxge_debug_ll_config(VXGE_ERR,
4495                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4496                 ret = 0;
4497                 goto _exit3;
4498         }
4499
4500         /* Setting driver callbacks */
4501         attr.uld_callbacks = &vxge_callbacks;
4502
4503         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4504         if (status != VXGE_HW_OK) {
4505                 vxge_debug_init(VXGE_ERR,
4506                         "Failed to initialize device (%d)", status);
4507                 ret = -EINVAL;
4508                 goto _exit3;
4509         }
4510
4511         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4512                         ll_config->device_hw_info.fw_version.minor,
4513                         ll_config->device_hw_info.fw_version.build) >=
4514             VXGE_EPROM_FW_VER) {
4515                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4516
4517                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4518                 if (status != VXGE_HW_OK) {
4519                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4520                                         VXGE_DRIVER_NAME);
4521                         /* This is a non-fatal error, continue */
4522                 }
4523
4524                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4525                         hldev->eprom_versions[i] = img[i].version;
4526                         if (!img[i].is_valid)
4527                                 break;
4528                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4529                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4530                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4531                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4532                                         VXGE_EPROM_IMG_FIX(img[i].version),
4533                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4534                 }
4535         }
4536
4537         /* if FCS stripping is not disabled in MAC fail driver load */
4538         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4539         if (status != VXGE_HW_OK) {
4540                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4541                                 " failing driver load", VXGE_DRIVER_NAME);
4542                 ret = -EINVAL;
4543                 goto _exit4;
4544         }
4545
4546         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4547          * due to the fact that HWTS is using the FCS as the location of the
4548          * timestamp.  The HW FCS checking will still correctly determine if
4549          * there is a valid checksum, and the FCS is being removed by the driver
4550          * anyway.  So no fucntionality is being lost.  Since it is always
4551          * enabled, we now simply use the ioctl call to set whether or not the
4552          * driver should be paying attention to the HWTS.
4553          */
4554         if (is_privileged == VXGE_HW_OK) {
4555                 status = vxge_timestamp_config(hldev);
4556                 if (status != VXGE_HW_OK) {
4557                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4558                                         VXGE_DRIVER_NAME);
4559                         ret = -EFAULT;
4560                         goto _exit4;
4561                 }
4562         }
4563
4564         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4565
4566         /* set private device info */
4567         pci_set_drvdata(pdev, hldev);
4568
4569         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4570         ll_config->addr_learn_en = addr_learn_en;
4571         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4572         ll_config->rth_hash_type_tcpipv4 = 1;
4573         ll_config->rth_hash_type_ipv4 = 0;
4574         ll_config->rth_hash_type_tcpipv6 = 0;
4575         ll_config->rth_hash_type_ipv6 = 0;
4576         ll_config->rth_hash_type_tcpipv6ex = 0;
4577         ll_config->rth_hash_type_ipv6ex = 0;
4578         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4579         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4580         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4581
4582         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4583                                    &vdev);
4584         if (ret) {
4585                 ret = -EINVAL;
4586                 goto _exit4;
4587         }
4588
4589         ret = vxge_probe_fw_update(vdev);
4590         if (ret)
4591                 goto _exit5;
4592
4593         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4594         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4595                 vxge_hw_device_trace_level_get(hldev));
4596
4597         /* set private HW device info */
4598         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4599         vdev->bar0 = attr.bar0;
4600         vdev->max_vpath_supported = max_vpath_supported;
4601         vdev->no_of_vpath = no_of_vpath;
4602
4603         /* Virtual Path count */
4604         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4605                 if (!vxge_bVALn(vpath_mask, i, 1))
4606                         continue;
4607                 if (j >= vdev->no_of_vpath)
4608                         break;
4609
4610                 vdev->vpaths[j].is_configured = 1;
4611                 vdev->vpaths[j].device_id = i;
4612                 vdev->vpaths[j].ring.driver_id = j;
4613                 vdev->vpaths[j].vdev = vdev;
4614                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4615                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4616                                 ll_config->device_hw_info.mac_addrs[i],
4617                                 ETH_ALEN);
4618
4619                 /* Initialize the mac address list header */
4620                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4621
4622                 vdev->vpaths[j].mac_addr_cnt = 0;
4623                 vdev->vpaths[j].mcast_addr_cnt = 0;
4624                 j++;
4625         }
4626         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4627         vdev->max_config_port = max_config_port;
4628
4629         vdev->vlan_tag_strip = vlan_tag_strip;
4630
4631         /* map the hashing selector table to the configured vpaths */
4632         for (i = 0; i < vdev->no_of_vpath; i++)
4633                 vdev->vpath_selector[i] = vpath_selector[i];
4634
4635         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4636
4637         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4638         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4639         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4640
4641         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4642                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4643
4644         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4645                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4646
4647         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4648                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4649
4650         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4651                 vdev->ndev->name, macaddr);
4652
4653         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4654                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4655
4656         vxge_debug_init(VXGE_TRACE,
4657                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4658                 ll_config->device_hw_info.fw_version.version,
4659                 ll_config->device_hw_info.fw_date.date);
4660
4661         if (new_device) {
4662                 switch (ll_config->device_hw_info.function_mode) {
4663                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4664                         vxge_debug_init(VXGE_TRACE,
4665                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4666                 break;
4667                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4668                         vxge_debug_init(VXGE_TRACE,
4669                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4670                 break;
4671                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4672                         vxge_debug_init(VXGE_TRACE,
4673                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4674                 break;
4675                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4676                         vxge_debug_init(VXGE_TRACE,
4677                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4678                 break;
4679                 }
4680         }
4681
4682         vxge_print_parm(vdev, vpath_mask);
4683
4684         /* Store the fw version for ethttool option */
4685         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4686         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4687
4688         /* Copy the station mac address to the list */
4689         for (i = 0; i < vdev->no_of_vpath; i++) {
4690                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4691                 if (NULL == entry) {
4692                         vxge_debug_init(VXGE_ERR,
4693                                 "%s: mac_addr_list : memory allocation failed",
4694                                 vdev->ndev->name);
4695                         ret = -EPERM;
4696                         goto _exit6;
4697                 }
4698                 macaddr = (u8 *)&entry->macaddr;
4699                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4700                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4701                 vdev->vpaths[i].mac_addr_cnt = 1;
4702         }
4703
4704         kfree(device_config);
4705
4706         /*
4707          * INTA is shared in multi-function mode. This is unlike the INTA
4708          * implementation in MR mode, where each VH has its own INTA message.
4709          * - INTA is masked (disabled) as long as at least one function sets
4710          * its TITAN_MASK_ALL_INT.ALARM bit.
4711          * - INTA is unmasked (enabled) when all enabled functions have cleared
4712          * their own TITAN_MASK_ALL_INT.ALARM bit.
4713          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4714          * Though this driver leaves the top level interrupts unmasked while
4715          * leaving the required module interrupt bits masked on exit, there
4716          * could be a rougue driver around that does not follow this procedure
4717          * resulting in a failure to generate interrupts. The following code is
4718          * present to prevent such a failure.
4719          */
4720
4721         if (ll_config->device_hw_info.function_mode ==
4722                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4723                 if (vdev->config.intr_type == INTA)
4724                         vxge_hw_device_unmask_all(hldev);
4725
4726         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4727                 vdev->ndev->name, __func__, __LINE__);
4728
4729         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4730         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4731                 vxge_hw_device_trace_level_get(hldev));
4732
4733         kfree(ll_config);
4734         return 0;
4735
4736 _exit6:
4737         for (i = 0; i < vdev->no_of_vpath; i++)
4738                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4739 _exit5:
4740         vxge_device_unregister(hldev);
4741 _exit4:
4742         vxge_hw_device_terminate(hldev);
4743         pci_disable_sriov(pdev);
4744 _exit3:
4745         iounmap(attr.bar0);
4746 _exit2:
4747         pci_release_region(pdev, 0);
4748 _exit1:
4749         pci_disable_device(pdev);
4750 _exit0:
4751         kfree(ll_config);
4752         kfree(device_config);
4753         driver_config->config_dev_cnt--;
4754         driver_config->total_dev_cnt--;
4755         return ret;
4756 }
4757
4758 /**
4759  * vxge_rem_nic - Free the PCI device
4760  * @pdev: structure containing the PCI related information of the device.
4761  * Description: This function is called by the Pci subsystem to release a
4762  * PCI device and free up all resource held up by the device.
4763  */
4764 static void vxge_remove(struct pci_dev *pdev)
4765 {
4766         struct __vxge_hw_device *hldev;
4767         struct vxgedev *vdev;
4768         int i;
4769
4770         hldev = pci_get_drvdata(pdev);
4771         if (hldev == NULL)
4772                 return;
4773
4774         vdev = netdev_priv(hldev->ndev);
4775
4776         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4777         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4778                         __func__);
4779
4780         for (i = 0; i < vdev->no_of_vpath; i++)
4781                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4782
4783         vxge_device_unregister(hldev);
4784         /* Do not call pci_disable_sriov here, as it will break child devices */
4785         vxge_hw_device_terminate(hldev);
4786         iounmap(vdev->bar0);
4787         pci_release_region(pdev, 0);
4788         pci_disable_device(pdev);
4789         driver_config->config_dev_cnt--;
4790         driver_config->total_dev_cnt--;
4791
4792         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4793                         __func__, __LINE__);
4794         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4795                              __LINE__);
4796 }
4797
4798 static const struct pci_error_handlers vxge_err_handler = {
4799         .error_detected = vxge_io_error_detected,
4800         .slot_reset = vxge_io_slot_reset,
4801         .resume = vxge_io_resume,
4802 };
4803
4804 static struct pci_driver vxge_driver = {
4805         .name = VXGE_DRIVER_NAME,
4806         .id_table = vxge_id_table,
4807         .probe = vxge_probe,
4808         .remove = vxge_remove,
4809 #ifdef CONFIG_PM
4810         .suspend = vxge_pm_suspend,
4811         .resume = vxge_pm_resume,
4812 #endif
4813         .err_handler = &vxge_err_handler,
4814 };
4815
4816 static int __init
4817 vxge_starter(void)
4818 {
4819         int ret = 0;
4820
4821         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4822         pr_info("Driver version: %s\n", DRV_VERSION);
4823
4824         verify_bandwidth();
4825
4826         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4827         if (!driver_config)
4828                 return -ENOMEM;
4829
4830         ret = pci_register_driver(&vxge_driver);
4831         if (ret) {
4832                 kfree(driver_config);
4833                 goto err;
4834         }
4835
4836         if (driver_config->config_dev_cnt &&
4837            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4838                 vxge_debug_init(VXGE_ERR,
4839                         "%s: Configured %d of %d devices",
4840                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4841                         driver_config->total_dev_cnt);
4842 err:
4843         return ret;
4844 }
4845
4846 static void __exit
4847 vxge_closer(void)
4848 {
4849         pci_unregister_driver(&vxge_driver);
4850         kfree(driver_config);
4851 }
4852 module_init(vxge_starter);
4853 module_exit(vxge_closer);