drivers/net/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2010 Exar Corp.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46 #include <linux/if_vlan.h>
  47 #include <linux/pci.h>
  48 #include <linux/slab.h>
  49 #include <linux/tcp.h>
  50 #include <net/ip.h>
  51 #include <linux/netdevice.h>
  52 #include <linux/etherdevice.h>
  53 #include <linux/firmware.h>
  54 #include <linux/net_tstamp.h>
  55 #include "vxge-main.h"
  56 #include "vxge-reg.h"
  57
  58 MODULE_LICENSE("Dual BSD/GPL");
  59 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  60         "Virtualized Server Adapter");
  61
  62 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  63         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  64         PCI_ANY_ID},
  65         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  66         PCI_ANY_ID},
  67         {0}
  68 };
  69
  70 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  71
  72 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  73 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  74 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  75 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  76 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  77 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  78
  79 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  80                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  81 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  82         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  83 module_param_array(bw_percentage, uint, NULL, 0);
  84
  85 static struct vxge_drv_config *driver_config;
  86
  87 static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
  88                                              struct macInfo *mac);
  89 static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
  90                                              struct macInfo *mac);
  91 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac);
  92 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac);
  93 static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath);
  94 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath);
  95
  96 static inline int is_vxge_card_up(struct vxgedev *vdev)
  97 {
  98         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  99 }
 100
 101 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
 102 {
 103         struct sk_buff **skb_ptr = NULL;
 104         struct sk_buff **temp;
 105 #define NR_SKB_COMPLETED 128
 106         struct sk_buff *completed[NR_SKB_COMPLETED];
 107         int more;
 108
 109         do {
 110                 more = 0;
 111                 skb_ptr = completed;
 112
 113                 if (__netif_tx_trylock(fifo->txq)) {
 114                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 115                                                 NR_SKB_COMPLETED, &more);
 116                         __netif_tx_unlock(fifo->txq);
 117                 }
 118
 119                 /* free SKBs */
 120                 for (temp = completed; temp != skb_ptr; temp++)
 121                         dev_kfree_skb_irq(*temp);
 122         } while (more);
 123 }
 124
 125 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 126 {
 127         int i;
 128
 129         /* Complete all transmits */
 130         for (i = 0; i < vdev->no_of_vpath; i++)
 131                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 132 }
 133
 134 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 135 {
 136         int i;
 137         struct vxge_ring *ring;
 138
 139         /* Complete all receives*/
 140         for (i = 0; i < vdev->no_of_vpath; i++) {
 141                 ring = &vdev->vpaths[i].ring;
 142                 vxge_hw_vpath_poll_rx(ring->handle);
 143         }
 144 }
 145
 146 /*
 147  * vxge_callback_link_up
 148  *
 149  * This function is called during interrupt context to notify link up state
 150  * change.
 151  */
 152 static void
 153 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 154 {
 155         struct net_device *dev = hldev->ndev;
 156         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 157
 158         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 159                 vdev->ndev->name, __func__, __LINE__);
 160         netdev_notice(vdev->ndev, "Link Up\n");
 161         vdev->stats.link_up++;
 162
 163         netif_carrier_on(vdev->ndev);
 164         netif_tx_wake_all_queues(vdev->ndev);
 165
 166         vxge_debug_entryexit(VXGE_TRACE,
 167                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 168 }
 169
 170 /*
 171  * vxge_callback_link_down
 172  *
 173  * This function is called during interrupt context to notify link down state
 174  * change.
 175  */
 176 static void
 177 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 178 {
 179         struct net_device *dev = hldev->ndev;
 180         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 181
 182         vxge_debug_entryexit(VXGE_TRACE,
 183                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 184         netdev_notice(vdev->ndev, "Link Down\n");
 185
 186         vdev->stats.link_down++;
 187         netif_carrier_off(vdev->ndev);
 188         netif_tx_stop_all_queues(vdev->ndev);
 189
 190         vxge_debug_entryexit(VXGE_TRACE,
 191                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 192 }
 193
 194 /*
 195  * vxge_rx_alloc
 196  *
 197  * Allocate SKB.
 198  */
 199 static struct sk_buff*
 200 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 201 {
 202         struct net_device    *dev;
 203         struct sk_buff       *skb;
 204         struct vxge_rx_priv *rx_priv;
 205
 206         dev = ring->ndev;
 207         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 208                 ring->ndev->name, __func__, __LINE__);
 209
 210         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 211
 212         /* try to allocate skb first. this one may fail */
 213         skb = netdev_alloc_skb(dev, skb_size +
 214         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 215         if (skb == NULL) {
 216                 vxge_debug_mem(VXGE_ERR,
 217                         "%s: out of memory to allocate SKB", dev->name);
 218                 ring->stats.skb_alloc_fail++;
 219                 return NULL;
 220         }
 221
 222         vxge_debug_mem(VXGE_TRACE,
 223                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 224                 __func__, __LINE__, skb);
 225
 226         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 227
 228         rx_priv->skb = skb;
 229         rx_priv->skb_data = NULL;
 230         rx_priv->data_size = skb_size;
 231         vxge_debug_entryexit(VXGE_TRACE,
 232                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 233
 234         return skb;
 235 }
 236
 237 /*
 238  * vxge_rx_map
 239  */
 240 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 241 {
 242         struct vxge_rx_priv *rx_priv;
 243         dma_addr_t dma_addr;
 244
 245         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 246                 ring->ndev->name, __func__, __LINE__);
 247         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 248
 249         rx_priv->skb_data = rx_priv->skb->data;
 250         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 251                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 252
 253         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 254                 ring->stats.pci_map_fail++;
 255                 return -EIO;
 256         }
 257         vxge_debug_mem(VXGE_TRACE,
 258                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 259                 ring->ndev->name, __func__, __LINE__,
 260                 (unsigned long long)dma_addr);
 261         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 262
 263         rx_priv->data_dma = dma_addr;
 264         vxge_debug_entryexit(VXGE_TRACE,
 265                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 266
 267         return 0;
 268 }
 269
 270 /*
 271  * vxge_rx_initial_replenish
 272  * Allocation of RxD as an initial replenish procedure.
 273  */
 274 static enum vxge_hw_status
 275 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 276 {
 277         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 278         struct vxge_rx_priv *rx_priv;
 279
 280         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 281                 ring->ndev->name, __func__, __LINE__);
 282         if (vxge_rx_alloc(dtrh, ring,
 283                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 284                 return VXGE_HW_FAIL;
 285
 286         if (vxge_rx_map(dtrh, ring)) {
 287                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 288                 dev_kfree_skb(rx_priv->skb);
 289
 290                 return VXGE_HW_FAIL;
 291         }
 292         vxge_debug_entryexit(VXGE_TRACE,
 293                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 294
 295         return VXGE_HW_OK;
 296 }
 297
 298 static inline void
 299 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 300                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 301 {
 302
 303         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 304                         ring->ndev->name, __func__, __LINE__);
 305         skb_record_rx_queue(skb, ring->driver_id);
 306         skb->protocol = eth_type_trans(skb, ring->ndev);
 307
 308         ring->stats.rx_frms++;
 309         ring->stats.rx_bytes += pkt_length;
 310
 311         if (skb->pkt_type == PACKET_MULTICAST)
 312                 ring->stats.rx_mcast++;
 313
 314         vxge_debug_rx(VXGE_TRACE,
 315                 "%s: %s:%d  skb protocol = %d",
 316                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 317
 318         if (ring->gro_enable) {
 319                 if (ring->vlgrp && ext_info->vlan &&
 320                         (ring->vlan_tag_strip ==
 321                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 322                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 323                                         ext_info->vlan, skb);
 324                 else
 325                         napi_gro_receive(ring->napi_p, skb);
 326         } else {
 327                 if (ring->vlgrp && vlan &&
 328                         (ring->vlan_tag_strip ==
 329                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 330                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 331                 else
 332                         netif_receive_skb(skb);
 333         }
 334         vxge_debug_entryexit(VXGE_TRACE,
 335                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 336 }
 337
 338 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 339                                     struct vxge_rx_priv *rx_priv)
 340 {
 341         pci_dma_sync_single_for_device(ring->pdev,
 342                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 343
 344         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 345         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 346 }
 347
 348 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 349                              void *post_dtr, struct __vxge_hw_ring *ringh)
 350 {
 351         int dtr_count = *dtr_cnt;
 352         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 353                 if (*first_dtr)
 354                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 355                 *first_dtr = post_dtr;
 356         } else
 357                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 358         dtr_count++;
 359         *dtr_cnt = dtr_count;
 360 }
 361
 362 /*
 363  * vxge_rx_1b_compl
 364  *
 365  * If the interrupt is because of a received frame or if the receive ring
 366  * contains fresh as yet un-processed frames, this function is called.
 367  */
 368 static enum vxge_hw_status
 369 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 370                  u8 t_code, void *userdata)
 371 {
 372         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 373         struct net_device *dev = ring->ndev;
 374         unsigned int dma_sizes;
 375         void *first_dtr = NULL;
 376         int dtr_cnt = 0;
 377         int data_size;
 378         dma_addr_t data_dma;
 379         int pkt_length;
 380         struct sk_buff *skb;
 381         struct vxge_rx_priv *rx_priv;
 382         struct vxge_hw_ring_rxd_info ext_info;
 383         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 384                 ring->ndev->name, __func__, __LINE__);
 385         ring->pkts_processed = 0;
 386
 387         vxge_hw_ring_replenish(ringh);
 388
 389         do {
 390                 prefetch((char *)dtr + L1_CACHE_BYTES);
 391                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 392                 skb = rx_priv->skb;
 393                 data_size = rx_priv->data_size;
 394                 data_dma = rx_priv->data_dma;
 395                 prefetch(rx_priv->skb_data);
 396
 397                 vxge_debug_rx(VXGE_TRACE,
 398                         "%s: %s:%d  skb = 0x%p",
 399                         ring->ndev->name, __func__, __LINE__, skb);
 400
 401                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 402                 pkt_length = dma_sizes;
 403
 404                 pkt_length -= ETH_FCS_LEN;
 405
 406                 vxge_debug_rx(VXGE_TRACE,
 407                         "%s: %s:%d  Packet Length = %d",
 408                         ring->ndev->name, __func__, __LINE__, pkt_length);
 409
 410                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 411
 412                 /* check skb validity */
 413                 vxge_assert(skb);
 414
 415                 prefetch((char *)skb + L1_CACHE_BYTES);
 416                 if (unlikely(t_code)) {
 417
 418                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 419                                 VXGE_HW_OK) {
 420
 421                                 ring->stats.rx_errors++;
 422                                 vxge_debug_rx(VXGE_TRACE,
 423                                         "%s: %s :%d Rx T_code is %d",
 424                                         ring->ndev->name, __func__,
 425                                         __LINE__, t_code);
 426
 427                                 /* If the t_code is not supported and if the
 428                                  * t_code is other than 0x5 (unparseable packet
 429                                  * such as unknown UPV6 header), Drop it !!!
 430                                  */
 431                                 vxge_re_pre_post(dtr, ring, rx_priv);
 432
 433                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 434                                 ring->stats.rx_dropped++;
 435                                 continue;
 436                         }
 437                 }
 438
 439                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 440
 441                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 442
 443                                 if (!vxge_rx_map(dtr, ring)) {
 444                                         skb_put(skb, pkt_length);
 445
 446                                         pci_unmap_single(ring->pdev, data_dma,
 447                                                 data_size, PCI_DMA_FROMDEVICE);
 448
 449                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 450                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 451                                                 ringh);
 452                                 } else {
 453                                         dev_kfree_skb(rx_priv->skb);
 454                                         rx_priv->skb = skb;
 455                                         rx_priv->data_size = data_size;
 456                                         vxge_re_pre_post(dtr, ring, rx_priv);
 457
 458                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 459                                                 ringh);
 460                                         ring->stats.rx_dropped++;
 461                                         break;
 462                                 }
 463                         } else {
 464                                 vxge_re_pre_post(dtr, ring, rx_priv);
 465
 466                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 467                                 ring->stats.rx_dropped++;
 468                                 break;
 469                         }
 470                 } else {
 471                         struct sk_buff *skb_up;
 472
 473                         skb_up = netdev_alloc_skb(dev, pkt_length +
 474                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 475                         if (skb_up != NULL) {
 476                                 skb_reserve(skb_up,
 477                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 478
 479                                 pci_dma_sync_single_for_cpu(ring->pdev,
 480                                         data_dma, data_size,
 481                                         PCI_DMA_FROMDEVICE);
 482
 483                                 vxge_debug_mem(VXGE_TRACE,
 484                                         "%s: %s:%d  skb_up = %p",
 485                                         ring->ndev->name, __func__,
 486                                         __LINE__, skb);
 487                                 memcpy(skb_up->data, skb->data, pkt_length);
 488
 489                                 vxge_re_pre_post(dtr, ring, rx_priv);
 490
 491                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 492                                         ringh);
 493                                 /* will netif_rx small SKB instead */
 494                                 skb = skb_up;
 495                                 skb_put(skb, pkt_length);
 496                         } else {
 497                                 vxge_re_pre_post(dtr, ring, rx_priv);
 498
 499                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 500                                 vxge_debug_rx(VXGE_ERR,
 501                                         "%s: vxge_rx_1b_compl: out of "
 502                                         "memory", dev->name);
 503                                 ring->stats.skb_alloc_fail++;
 504                                 break;
 505                         }
 506                 }
 507
 508                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 509                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 510                     ring->rx_csum && /* Offload Rx side CSUM */
 511                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 512                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 513                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 514                 else
 515                         skb_checksum_none_assert(skb);
 516
 517
 518                 if (ring->rx_hwts) {
 519                         struct skb_shared_hwtstamps *skb_hwts;
 520                         u32 ns = *(u32 *)(skb->head + pkt_length);
 521
 522                         skb_hwts = skb_hwtstamps(skb);
 523                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 524                         skb_hwts->syststamp.tv64 = 0;
 525                 }
 526
 527                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 528                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 529                  * if rss is disabled/enabled, so key off of that.
 530                  */
 531                 if (ext_info.rth_value)
 532                         skb->rxhash = ext_info.rth_value;
 533
 534                 vxge_rx_complete(ring, skb, ext_info.vlan,
 535                         pkt_length, &ext_info);
 536
 537                 ring->budget--;
 538                 ring->pkts_processed++;
 539                 if (!ring->budget)
 540                         break;
 541
 542         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 543                 &t_code) == VXGE_HW_OK);
 544
 545         if (first_dtr)
 546                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 547
 548         vxge_debug_entryexit(VXGE_TRACE,
 549                                 "%s:%d  Exiting...",
 550                                 __func__, __LINE__);
 551         return VXGE_HW_OK;
 552 }
 553
 554 /*
 555  * vxge_xmit_compl
 556  *
 557  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 558  * this function is called. It identifies the last TxD whose buffer was
 559  * freed and frees all skbs whose data have already DMA'ed into the NICs
 560  * internal memory.
 561  */
 562 static enum vxge_hw_status
 563 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 564                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 565                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 566 {
 567         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 568         struct sk_buff *skb, **done_skb = *skb_ptr;
 569         int pkt_cnt = 0;
 570
 571         vxge_debug_entryexit(VXGE_TRACE,
 572                 "%s:%d Entered....", __func__, __LINE__);
 573
 574         do {
 575                 int frg_cnt;
 576                 skb_frag_t *frag;
 577                 int i = 0, j;
 578                 struct vxge_tx_priv *txd_priv =
 579                         vxge_hw_fifo_txdl_private_get(dtr);
 580
 581                 skb = txd_priv->skb;
 582                 frg_cnt = skb_shinfo(skb)->nr_frags;
 583                 frag = &skb_shinfo(skb)->frags[0];
 584
 585                 vxge_debug_tx(VXGE_TRACE,
 586                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 587                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 588                                 __LINE__, fifo_hw, dtr, t_code);
 589                 /* check skb validity */
 590                 vxge_assert(skb);
 591                 vxge_debug_tx(VXGE_TRACE,
 592                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 593                         fifo->ndev->name, __func__, __LINE__,
 594                         skb, txd_priv, frg_cnt);
 595                 if (unlikely(t_code)) {
 596                         fifo->stats.tx_errors++;
 597                         vxge_debug_tx(VXGE_ERR,
 598                                 "%s: tx: dtr %p completed due to "
 599                                 "error t_code %01x", fifo->ndev->name,
 600                                 dtr, t_code);
 601                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 602                 }
 603
 604                 /*  for unfragmented skb */
 605                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 606                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 607
 608                 for (j = 0; j < frg_cnt; j++) {
 609                         pci_unmap_page(fifo->pdev,
 610                                         txd_priv->dma_buffers[i++],
 611                                         frag->size, PCI_DMA_TODEVICE);
 612                         frag += 1;
 613                 }
 614
 615                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 616
 617                 /* Updating the statistics block */
 618                 fifo->stats.tx_frms++;
 619                 fifo->stats.tx_bytes += skb->len;
 620
 621                 *done_skb++ = skb;
 622
 623                 if (--nr_skb <= 0) {
 624                         *more = 1;
 625                         break;
 626                 }
 627
 628                 pkt_cnt++;
 629                 if (pkt_cnt > fifo->indicate_max_pkts)
 630                         break;
 631
 632         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 633                                 &dtr, &t_code) == VXGE_HW_OK);
 634
 635         *skb_ptr = done_skb;
 636         if (netif_tx_queue_stopped(fifo->txq))
 637                 netif_tx_wake_queue(fifo->txq);
 638
 639         vxge_debug_entryexit(VXGE_TRACE,
 640                                 "%s: %s:%d  Exiting...",
 641                                 fifo->ndev->name, __func__, __LINE__);
 642         return VXGE_HW_OK;
 643 }
 644
 645 /* select a vpath to transmit the packet */
 646 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 647 {
 648         u16 queue_len, counter = 0;
 649         if (skb->protocol == htons(ETH_P_IP)) {
 650                 struct iphdr *ip;
 651                 struct tcphdr *th;
 652
 653                 ip = ip_hdr(skb);
 654
 655                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 656                         th = (struct tcphdr *)(((unsigned char *)ip) +
 657                                         ip->ihl*4);
 658
 659                         queue_len = vdev->no_of_vpath;
 660                         counter = (ntohs(th->source) +
 661                                 ntohs(th->dest)) &
 662                                 vdev->vpath_selector[queue_len - 1];
 663                         if (counter >= queue_len)
 664                                 counter = queue_len - 1;
 665                 }
 666         }
 667         return counter;
 668 }
 669
 670 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 671         struct vxge_vpath *vpath, u64 del_mac)
 672 {
 673         struct list_head *entry, *next;
 674         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 675                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 676                         return TRUE;
 677         }
 678         return FALSE;
 679 }
 680
 681 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 682 {
 683         struct macInfo mac_info;
 684         u8 *mac_address = NULL;
 685         u64 mac_addr = 0, vpath_vector = 0;
 686         int vpath_idx = 0;
 687         enum vxge_hw_status status = VXGE_HW_OK;
 688         struct vxge_vpath *vpath = NULL;
 689         struct __vxge_hw_device *hldev;
 690
 691         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 692
 693         mac_address = (u8 *)&mac_addr;
 694         memcpy(mac_address, mac_header, ETH_ALEN);
 695
 696         /* Is this mac address already in the list? */
 697         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 698                 vpath = &vdev->vpaths[vpath_idx];
 699                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 700                         return vpath_idx;
 701         }
 702
 703         memset(&mac_info, 0, sizeof(struct macInfo));
 704         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 705
 706         /* Any vpath has room to add mac address to its da table? */
 707         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 708                 vpath = &vdev->vpaths[vpath_idx];
 709                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 710                         /* Add this mac address to this vpath */
 711                         mac_info.vpath_no = vpath_idx;
 712                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 713                         status = vxge_add_mac_addr(vdev, &mac_info);
 714                         if (status != VXGE_HW_OK)
 715                                 return -EPERM;
 716                         return vpath_idx;
 717                 }
 718         }
 719
 720         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 721         vpath_idx = 0;
 722         mac_info.vpath_no = vpath_idx;
 723         /* Is the first vpath already selected as catch-basin ? */
 724         vpath = &vdev->vpaths[vpath_idx];
 725         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 726                 /* Add this mac address to this vpath */
 727                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 728                         return -EPERM;
 729                 return vpath_idx;
 730         }
 731
 732         /* Select first vpath as catch-basin */
 733         vpath_vector = vxge_mBIT(vpath->device_id);
 734         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 735                                 vxge_hw_mgmt_reg_type_mrpcim,
 736                                 0,
 737                                 (ulong)offsetof(
 738                                         struct vxge_hw_mrpcim_reg,
 739                                         rts_mgr_cbasin_cfg),
 740                                 vpath_vector);
 741         if (status != VXGE_HW_OK) {
 742                 vxge_debug_tx(VXGE_ERR,
 743                         "%s: Unable to set the vpath-%d in catch-basin mode",
 744                         VXGE_DRIVER_NAME, vpath->device_id);
 745                 return -EPERM;
 746         }
 747
 748         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 749                 return -EPERM;
 750
 751         return vpath_idx;
 752 }
 753
 754 /**
 755  * vxge_xmit
 756  * @skb : the socket buffer containing the Tx data.
 757  * @dev : device pointer.
 758  *
 759  * This function is the Tx entry point of the driver. Neterion NIC supports
 760  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 761 */
 762 static netdev_tx_t
 763 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 764 {
 765         struct vxge_fifo *fifo = NULL;
 766         void *dtr_priv;
 767         void *dtr = NULL;
 768         struct vxgedev *vdev = NULL;
 769         enum vxge_hw_status status;
 770         int frg_cnt, first_frg_len;
 771         skb_frag_t *frag;
 772         int i = 0, j = 0, avail;
 773         u64 dma_pointer;
 774         struct vxge_tx_priv *txdl_priv = NULL;
 775         struct __vxge_hw_fifo *fifo_hw;
 776         int offload_type;
 777         int vpath_no = 0;
 778
 779         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 780                         dev->name, __func__, __LINE__);
 781
 782         /* A buffer with no data will be dropped */
 783         if (unlikely(skb->len <= 0)) {
 784                 vxge_debug_tx(VXGE_ERR,
 785                         "%s: Buffer has no data..", dev->name);
 786                 dev_kfree_skb(skb);
 787                 return NETDEV_TX_OK;
 788         }
 789
 790         vdev = (struct vxgedev *)netdev_priv(dev);
 791
 792         if (unlikely(!is_vxge_card_up(vdev))) {
 793                 vxge_debug_tx(VXGE_ERR,
 794                         "%s: vdev not initialized", dev->name);
 795                 dev_kfree_skb(skb);
 796                 return NETDEV_TX_OK;
 797         }
 798
 799         if (vdev->config.addr_learn_en) {
 800                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 801                 if (vpath_no == -EPERM) {
 802                         vxge_debug_tx(VXGE_ERR,
 803                                 "%s: Failed to store the mac address",
 804                                 dev->name);
 805                         dev_kfree_skb(skb);
 806                         return NETDEV_TX_OK;
 807                 }
 808         }
 809
 810         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 811                 vpath_no = skb_get_queue_mapping(skb);
 812         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 813                 vpath_no = vxge_get_vpath_no(vdev, skb);
 814
 815         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 816
 817         if (vpath_no >= vdev->no_of_vpath)
 818                 vpath_no = 0;
 819
 820         fifo = &vdev->vpaths[vpath_no].fifo;
 821         fifo_hw = fifo->handle;
 822
 823         if (netif_tx_queue_stopped(fifo->txq))
 824                 return NETDEV_TX_BUSY;
 825
 826         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 827         if (avail == 0) {
 828                 vxge_debug_tx(VXGE_ERR,
 829                         "%s: No free TXDs available", dev->name);
 830                 fifo->stats.txd_not_free++;
 831                 goto _exit0;
 832         }
 833
 834         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 835          * completion will resume the queue.
 836          */
 837         if (avail == 1)
 838                 netif_tx_stop_queue(fifo->txq);
 839
 840         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 841         if (unlikely(status != VXGE_HW_OK)) {
 842                 vxge_debug_tx(VXGE_ERR,
 843                    "%s: Out of descriptors .", dev->name);
 844                 fifo->stats.txd_out_of_desc++;
 845                 goto _exit0;
 846         }
 847
 848         vxge_debug_tx(VXGE_TRACE,
 849                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 850                 dev->name, __func__, __LINE__,
 851                 fifo_hw, dtr, dtr_priv);
 852
 853         if (vlan_tx_tag_present(skb)) {
 854                 u16 vlan_tag = vlan_tx_tag_get(skb);
 855                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 856         }
 857
 858         first_frg_len = skb_headlen(skb);
 859
 860         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 861                                 PCI_DMA_TODEVICE);
 862
 863         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 864                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 865                 fifo->stats.pci_map_fail++;
 866                 goto _exit0;
 867         }
 868
 869         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 870         txdl_priv->skb = skb;
 871         txdl_priv->dma_buffers[j] = dma_pointer;
 872
 873         frg_cnt = skb_shinfo(skb)->nr_frags;
 874         vxge_debug_tx(VXGE_TRACE,
 875                         "%s: %s:%d skb = %p txdl_priv = %p "
 876                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 877                         __func__, __LINE__, skb, txdl_priv,
 878                         frg_cnt, (unsigned long long)dma_pointer);
 879
 880         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 881                 first_frg_len);
 882
 883         frag = &skb_shinfo(skb)->frags[0];
 884         for (i = 0; i < frg_cnt; i++) {
 885                 /* ignore 0 length fragment */
 886                 if (!frag->size)
 887                         continue;
 888
 889                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 890                                 frag->page_offset, frag->size,
 891                                 PCI_DMA_TODEVICE);
 892
 893                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 894                         goto _exit2;
 895                 vxge_debug_tx(VXGE_TRACE,
 896                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 897                                 dev->name, __func__, __LINE__, i,
 898                                 (unsigned long long)dma_pointer);
 899
 900                 txdl_priv->dma_buffers[j] = dma_pointer;
 901                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 902                                         frag->size);
 903                 frag += 1;
 904         }
 905
 906         offload_type = vxge_offload_type(skb);
 907
 908         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 909                 int mss = vxge_tcp_mss(skb);
 910                 if (mss) {
 911                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 912                                 dev->name, __func__, __LINE__, mss);
 913                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 914                 } else {
 915                         vxge_assert(skb->len <=
 916                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 917                         vxge_assert(0);
 918                         goto _exit1;
 919                 }
 920         }
 921
 922         if (skb->ip_summed == CHECKSUM_PARTIAL)
 923                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 924                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 925                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 926                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 927
 928         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 929
 930         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 931                 dev->name, __func__, __LINE__);
 932         return NETDEV_TX_OK;
 933
 934 _exit2:
 935         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 936 _exit1:
 937         j = 0;
 938         frag = &skb_shinfo(skb)->frags[0];
 939
 940         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 941                         skb_headlen(skb), PCI_DMA_TODEVICE);
 942
 943         for (; j < i; j++) {
 944                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 945                         frag->size, PCI_DMA_TODEVICE);
 946                 frag += 1;
 947         }
 948
 949         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 950 _exit0:
 951         netif_tx_stop_queue(fifo->txq);
 952         dev_kfree_skb(skb);
 953
 954         return NETDEV_TX_OK;
 955 }
 956
 957 /*
 958  * vxge_rx_term
 959  *
 960  * Function will be called by hw function to abort all outstanding receive
 961  * descriptors.
 962  */
 963 static void
 964 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
 965 {
 966         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 967         struct vxge_rx_priv *rx_priv =
 968                 vxge_hw_ring_rxd_private_get(dtrh);
 969
 970         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 971                         ring->ndev->name, __func__, __LINE__);
 972         if (state != VXGE_HW_RXD_STATE_POSTED)
 973                 return;
 974
 975         pci_unmap_single(ring->pdev, rx_priv->data_dma,
 976                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 977
 978         dev_kfree_skb(rx_priv->skb);
 979         rx_priv->skb_data = NULL;
 980
 981         vxge_debug_entryexit(VXGE_TRACE,
 982                 "%s: %s:%d  Exiting...",
 983                 ring->ndev->name, __func__, __LINE__);
 984 }
 985
 986 /*
 987  * vxge_tx_term
 988  *
 989  * Function will be called to abort all outstanding tx descriptors
 990  */
 991 static void
 992 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
 993 {
 994         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 995         skb_frag_t *frag;
 996         int i = 0, j, frg_cnt;
 997         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
 998         struct sk_buff *skb = txd_priv->skb;
 999
1000         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1001
1002         if (state != VXGE_HW_TXDL_STATE_POSTED)
1003                 return;
1004
1005         /* check skb validity */
1006         vxge_assert(skb);
1007         frg_cnt = skb_shinfo(skb)->nr_frags;
1008         frag = &skb_shinfo(skb)->frags[0];
1009
1010         /*  for unfragmented skb */
1011         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1012                 skb_headlen(skb), PCI_DMA_TODEVICE);
1013
1014         for (j = 0; j < frg_cnt; j++) {
1015                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1016                                frag->size, PCI_DMA_TODEVICE);
1017                 frag += 1;
1018         }
1019
1020         dev_kfree_skb(skb);
1021
1022         vxge_debug_entryexit(VXGE_TRACE,
1023                 "%s:%d  Exiting...", __func__, __LINE__);
1024 }
1025
1026 /**
1027  * vxge_set_multicast
1028  * @dev: pointer to the device structure
1029  *
1030  * Entry point for multicast address enable/disable
1031  * This function is a driver entry point which gets called by the kernel
1032  * whenever multicast addresses must be enabled/disabled. This also gets
1033  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1034  * determine, if multicast address must be enabled or if promiscuous mode
1035  * is to be disabled etc.
1036  */
1037 static void vxge_set_multicast(struct net_device *dev)
1038 {
1039         struct netdev_hw_addr *ha;
1040         struct vxgedev *vdev;
1041         int i, mcast_cnt = 0;
1042         struct __vxge_hw_device *hldev;
1043         struct vxge_vpath *vpath;
1044         enum vxge_hw_status status = VXGE_HW_OK;
1045         struct macInfo mac_info;
1046         int vpath_idx = 0;
1047         struct vxge_mac_addrs *mac_entry;
1048         struct list_head *list_head;
1049         struct list_head *entry, *next;
1050         u8 *mac_address = NULL;
1051
1052         vxge_debug_entryexit(VXGE_TRACE,
1053                 "%s:%d", __func__, __LINE__);
1054
1055         vdev = (struct vxgedev *)netdev_priv(dev);
1056         hldev = (struct __vxge_hw_device  *)vdev->devh;
1057
1058         if (unlikely(!is_vxge_card_up(vdev)))
1059                 return;
1060
1061         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1062                 for (i = 0; i < vdev->no_of_vpath; i++) {
1063                         vpath = &vdev->vpaths[i];
1064                         vxge_assert(vpath->is_open);
1065                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1066                         if (status != VXGE_HW_OK)
1067                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1068                                                 "multicast, status %d", status);
1069                         vdev->all_multi_flg = 1;
1070                 }
1071         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1072                 for (i = 0; i < vdev->no_of_vpath; i++) {
1073                         vpath = &vdev->vpaths[i];
1074                         vxge_assert(vpath->is_open);
1075                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1076                         if (status != VXGE_HW_OK)
1077                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1078                                                 "multicast, status %d", status);
1079                         vdev->all_multi_flg = 0;
1080                 }
1081         }
1082
1083
1084         if (!vdev->config.addr_learn_en) {
1085                 for (i = 0; i < vdev->no_of_vpath; i++) {
1086                         vpath = &vdev->vpaths[i];
1087                         vxge_assert(vpath->is_open);
1088
1089                         if (dev->flags & IFF_PROMISC)
1090                                 status = vxge_hw_vpath_promisc_enable(
1091                                         vpath->handle);
1092                         else
1093                                 status = vxge_hw_vpath_promisc_disable(
1094                                         vpath->handle);
1095                         if (status != VXGE_HW_OK)
1096                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1097                                         ", status %d", dev->flags&IFF_PROMISC ?
1098                                         "enable" : "disable", status);
1099                 }
1100         }
1101
1102         memset(&mac_info, 0, sizeof(struct macInfo));
1103         /* Update individual M_CAST address list */
1104         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1105                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1106                 list_head = &vdev->vpaths[0].mac_addr_list;
1107                 if ((netdev_mc_count(dev) +
1108                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1109                                 vdev->vpaths[0].max_mac_addr_cnt)
1110                         goto _set_all_mcast;
1111
1112                 /* Delete previous MC's */
1113                 for (i = 0; i < mcast_cnt; i++) {
1114                         list_for_each_safe(entry, next, list_head) {
1115                                 mac_entry = (struct vxge_mac_addrs *) entry;
1116                                 /* Copy the mac address to delete */
1117                                 mac_address = (u8 *)&mac_entry->macaddr;
1118                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1119
1120                                 /* Is this a multicast address */
1121                                 if (0x01 & mac_info.macaddr[0]) {
1122                                         for (vpath_idx = 0; vpath_idx <
1123                                                 vdev->no_of_vpath;
1124                                                 vpath_idx++) {
1125                                                 mac_info.vpath_no = vpath_idx;
1126                                                 status = vxge_del_mac_addr(
1127                                                                 vdev,
1128                                                                 &mac_info);
1129                                         }
1130                                 }
1131                         }
1132                 }
1133
1134                 /* Add new ones */
1135                 netdev_for_each_mc_addr(ha, dev) {
1136                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1137                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1138                                         vpath_idx++) {
1139                                 mac_info.vpath_no = vpath_idx;
1140                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1141                                 status = vxge_add_mac_addr(vdev, &mac_info);
1142                                 if (status != VXGE_HW_OK) {
1143                                         vxge_debug_init(VXGE_ERR,
1144                                                 "%s:%d Setting individual"
1145                                                 "multicast address failed",
1146                                                 __func__, __LINE__);
1147                                         goto _set_all_mcast;
1148                                 }
1149                         }
1150                 }
1151
1152                 return;
1153 _set_all_mcast:
1154                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1155                 /* Delete previous MC's */
1156                 for (i = 0; i < mcast_cnt; i++) {
1157                         list_for_each_safe(entry, next, list_head) {
1158                                 mac_entry = (struct vxge_mac_addrs *) entry;
1159                                 /* Copy the mac address to delete */
1160                                 mac_address = (u8 *)&mac_entry->macaddr;
1161                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1162
1163                                 /* Is this a multicast address */
1164                                 if (0x01 & mac_info.macaddr[0])
1165                                         break;
1166                         }
1167
1168                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1169                                         vpath_idx++) {
1170                                 mac_info.vpath_no = vpath_idx;
1171                                 status = vxge_del_mac_addr(vdev, &mac_info);
1172                         }
1173                 }
1174
1175                 /* Enable all multicast */
1176                 for (i = 0; i < vdev->no_of_vpath; i++) {
1177                         vpath = &vdev->vpaths[i];
1178                         vxge_assert(vpath->is_open);
1179
1180                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1181                         if (status != VXGE_HW_OK) {
1182                                 vxge_debug_init(VXGE_ERR,
1183                                         "%s:%d Enabling all multicasts failed",
1184                                          __func__, __LINE__);
1185                         }
1186                         vdev->all_multi_flg = 1;
1187                 }
1188                 dev->flags |= IFF_ALLMULTI;
1189         }
1190
1191         vxge_debug_entryexit(VXGE_TRACE,
1192                 "%s:%d  Exiting...", __func__, __LINE__);
1193 }
1194
1195 /**
1196  * vxge_set_mac_addr
1197  * @dev: pointer to the device structure
1198  *
1199  * Update entry "0" (default MAC addr)
1200  */
1201 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1202 {
1203         struct sockaddr *addr = p;
1204         struct vxgedev *vdev;
1205         struct __vxge_hw_device  *hldev;
1206         enum vxge_hw_status status = VXGE_HW_OK;
1207         struct macInfo mac_info_new, mac_info_old;
1208         int vpath_idx = 0;
1209
1210         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1211
1212         vdev = (struct vxgedev *)netdev_priv(dev);
1213         hldev = vdev->devh;
1214
1215         if (!is_valid_ether_addr(addr->sa_data))
1216                 return -EINVAL;
1217
1218         memset(&mac_info_new, 0, sizeof(struct macInfo));
1219         memset(&mac_info_old, 0, sizeof(struct macInfo));
1220
1221         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1222                 __func__, __LINE__);
1223
1224         /* Get the old address */
1225         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1226
1227         /* Copy the new address */
1228         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1229
1230         /* First delete the old mac address from all the vpaths
1231         as we can't specify the index while adding new mac address */
1232         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1233                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1234                 if (!vpath->is_open) {
1235                         /* This can happen when this interface is added/removed
1236                         to the bonding interface. Delete this station address
1237                         from the linked list */
1238                         vxge_mac_list_del(vpath, &mac_info_old);
1239
1240                         /* Add this new address to the linked list
1241                         for later restoring */
1242                         vxge_mac_list_add(vpath, &mac_info_new);
1243
1244                         continue;
1245                 }
1246                 /* Delete the station address */
1247                 mac_info_old.vpath_no = vpath_idx;
1248                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1249         }
1250
1251         if (unlikely(!is_vxge_card_up(vdev))) {
1252                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1253                 return VXGE_HW_OK;
1254         }
1255
1256         /* Set this mac address to all the vpaths */
1257         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1258                 mac_info_new.vpath_no = vpath_idx;
1259                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1260                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1261                 if (status != VXGE_HW_OK)
1262                         return -EINVAL;
1263         }
1264
1265         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1266
1267         return status;
1268 }
1269
1270 /*
1271  * vxge_vpath_intr_enable
1272  * @vdev: pointer to vdev
1273  * @vp_id: vpath for which to enable the interrupts
1274  *
1275  * Enables the interrupts for the vpath
1276 */
1277 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1278 {
1279         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1280         int msix_id = 0;
1281         int tim_msix_id[4] = {0, 1, 0, 0};
1282         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1283
1284         vxge_hw_vpath_intr_enable(vpath->handle);
1285
1286         if (vdev->config.intr_type == INTA)
1287                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1288         else {
1289                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1290                         alarm_msix_id);
1291
1292                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1293                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1294                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1295
1296                 /* enable the alarm vector */
1297                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1298                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1299                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1300         }
1301 }
1302
1303 /*
1304  * vxge_vpath_intr_disable
1305  * @vdev: pointer to vdev
1306  * @vp_id: vpath for which to disable the interrupts
1307  *
1308  * Disables the interrupts for the vpath
1309 */
1310 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1311 {
1312         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1313         struct __vxge_hw_device *hldev;
1314         int msix_id;
1315
1316         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1317
1318         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1319
1320         vxge_hw_vpath_intr_disable(vpath->handle);
1321
1322         if (vdev->config.intr_type == INTA)
1323                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1324         else {
1325                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1326                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1327                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1328
1329                 /* disable the alarm vector */
1330                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1331                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1332                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1333         }
1334 }
1335
1336 /*
1337  * vxge_reset_vpath
1338  * @vdev: pointer to vdev
1339  * @vp_id: vpath to reset
1340  *
1341  * Resets the vpath
1342 */
1343 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1344 {
1345         enum vxge_hw_status status = VXGE_HW_OK;
1346         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1347         int ret = 0;
1348
1349         /* check if device is down already */
1350         if (unlikely(!is_vxge_card_up(vdev)))
1351                 return 0;
1352
1353         /* is device reset already scheduled */
1354         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1355                 return 0;
1356
1357         if (vpath->handle) {
1358                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1359                         if (is_vxge_card_up(vdev) &&
1360                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1361                                         != VXGE_HW_OK) {
1362                                 vxge_debug_init(VXGE_ERR,
1363                                         "vxge_hw_vpath_recover_from_reset"
1364                                         "failed for vpath:%d", vp_id);
1365                                 return status;
1366                         }
1367                 } else {
1368                         vxge_debug_init(VXGE_ERR,
1369                                 "vxge_hw_vpath_reset failed for"
1370                                 "vpath:%d", vp_id);
1371                                 return status;
1372                 }
1373         } else
1374                 return VXGE_HW_FAIL;
1375
1376         vxge_restore_vpath_mac_addr(vpath);
1377         vxge_restore_vpath_vid_table(vpath);
1378
1379         /* Enable all broadcast */
1380         vxge_hw_vpath_bcast_enable(vpath->handle);
1381
1382         /* Enable all multicast */
1383         if (vdev->all_multi_flg) {
1384                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1385                 if (status != VXGE_HW_OK)
1386                         vxge_debug_init(VXGE_ERR,
1387                                 "%s:%d Enabling multicast failed",
1388                                 __func__, __LINE__);
1389         }
1390
1391         /* Enable the interrupts */
1392         vxge_vpath_intr_enable(vdev, vp_id);
1393
1394         smp_wmb();
1395
1396         /* Enable the flow of traffic through the vpath */
1397         vxge_hw_vpath_enable(vpath->handle);
1398
1399         smp_wmb();
1400         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1401         vpath->ring.last_status = VXGE_HW_OK;
1402
1403         /* Vpath reset done */
1404         clear_bit(vp_id, &vdev->vp_reset);
1405
1406         /* Start the vpath queue */
1407         if (netif_tx_queue_stopped(vpath->fifo.txq))
1408                 netif_tx_wake_queue(vpath->fifo.txq);
1409
1410         return ret;
1411 }
1412
1413 static int do_vxge_reset(struct vxgedev *vdev, int event)
1414 {
1415         enum vxge_hw_status status;
1416         int ret = 0, vp_id, i;
1417
1418         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1419
1420         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1421                 /* check if device is down already */
1422                 if (unlikely(!is_vxge_card_up(vdev)))
1423                         return 0;
1424
1425                 /* is reset already scheduled */
1426                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1427                         return 0;
1428         }
1429
1430         if (event == VXGE_LL_FULL_RESET) {
1431                 /* wait for all the vpath reset to complete */
1432                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1433                         while (test_bit(vp_id, &vdev->vp_reset))
1434                                 msleep(50);
1435                 }
1436
1437                 /* if execution mode is set to debug, don't reset the adapter */
1438                 if (unlikely(vdev->exec_mode)) {
1439                         vxge_debug_init(VXGE_ERR,
1440                                 "%s: execution mode is debug, returning..",
1441                                 vdev->ndev->name);
1442                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1443                         netif_tx_stop_all_queues(vdev->ndev);
1444                         return 0;
1445                 }
1446         }
1447
1448         if (event == VXGE_LL_FULL_RESET) {
1449                 vxge_hw_device_wait_receive_idle(vdev->devh);
1450                 vxge_hw_device_intr_disable(vdev->devh);
1451
1452                 switch (vdev->cric_err_event) {
1453                 case VXGE_HW_EVENT_UNKNOWN:
1454                         netif_tx_stop_all_queues(vdev->ndev);
1455                         vxge_debug_init(VXGE_ERR,
1456                                 "fatal: %s: Disabling device due to"
1457                                 "unknown error",
1458                                 vdev->ndev->name);
1459                         ret = -EPERM;
1460                         goto out;
1461                 case VXGE_HW_EVENT_RESET_START:
1462                         break;
1463                 case VXGE_HW_EVENT_RESET_COMPLETE:
1464                 case VXGE_HW_EVENT_LINK_DOWN:
1465                 case VXGE_HW_EVENT_LINK_UP:
1466                 case VXGE_HW_EVENT_ALARM_CLEARED:
1467                 case VXGE_HW_EVENT_ECCERR:
1468                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1469                         ret = -EPERM;
1470                         goto out;
1471                 case VXGE_HW_EVENT_FIFO_ERR:
1472                 case VXGE_HW_EVENT_VPATH_ERR:
1473                         break;
1474                 case VXGE_HW_EVENT_CRITICAL_ERR:
1475                         netif_tx_stop_all_queues(vdev->ndev);
1476                         vxge_debug_init(VXGE_ERR,
1477                                 "fatal: %s: Disabling device due to"
1478                                 "serious error",
1479                                 vdev->ndev->name);
1480                         /* SOP or device reset required */
1481                         /* This event is not currently used */
1482                         ret = -EPERM;
1483                         goto out;
1484                 case VXGE_HW_EVENT_SERR:
1485                         netif_tx_stop_all_queues(vdev->ndev);
1486                         vxge_debug_init(VXGE_ERR,
1487                                 "fatal: %s: Disabling device due to"
1488                                 "serious error",
1489                                 vdev->ndev->name);
1490                         ret = -EPERM;
1491                         goto out;
1492                 case VXGE_HW_EVENT_SRPCIM_SERR:
1493                 case VXGE_HW_EVENT_MRPCIM_SERR:
1494                         ret = -EPERM;
1495                         goto out;
1496                 case VXGE_HW_EVENT_SLOT_FREEZE:
1497                         netif_tx_stop_all_queues(vdev->ndev);
1498                         vxge_debug_init(VXGE_ERR,
1499                                 "fatal: %s: Disabling device due to"
1500                                 "slot freeze",
1501                                 vdev->ndev->name);
1502                         ret = -EPERM;
1503                         goto out;
1504                 default:
1505                         break;
1506
1507                 }
1508         }
1509
1510         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1511                 netif_tx_stop_all_queues(vdev->ndev);
1512
1513         if (event == VXGE_LL_FULL_RESET) {
1514                 status = vxge_reset_all_vpaths(vdev);
1515                 if (status != VXGE_HW_OK) {
1516                         vxge_debug_init(VXGE_ERR,
1517                                 "fatal: %s: can not reset vpaths",
1518                                 vdev->ndev->name);
1519                         ret = -EPERM;
1520                         goto out;
1521                 }
1522         }
1523
1524         if (event == VXGE_LL_COMPL_RESET) {
1525                 for (i = 0; i < vdev->no_of_vpath; i++)
1526                         if (vdev->vpaths[i].handle) {
1527                                 if (vxge_hw_vpath_recover_from_reset(
1528                                         vdev->vpaths[i].handle)
1529                                                 != VXGE_HW_OK) {
1530                                         vxge_debug_init(VXGE_ERR,
1531                                                 "vxge_hw_vpath_recover_"
1532                                                 "from_reset failed for vpath: "
1533                                                 "%d", i);
1534                                         ret = -EPERM;
1535                                         goto out;
1536                                 }
1537                                 } else {
1538                                         vxge_debug_init(VXGE_ERR,
1539                                         "vxge_hw_vpath_reset failed for "
1540                                                 "vpath:%d", i);
1541                                         ret = -EPERM;
1542                                         goto out;
1543                                 }
1544         }
1545
1546         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1547                 /* Reprogram the DA table with populated mac addresses */
1548                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1549                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1550                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1551                 }
1552
1553                 /* enable vpath interrupts */
1554                 for (i = 0; i < vdev->no_of_vpath; i++)
1555                         vxge_vpath_intr_enable(vdev, i);
1556
1557                 vxge_hw_device_intr_enable(vdev->devh);
1558
1559                 smp_wmb();
1560
1561                 /* Indicate card up */
1562                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1563
1564                 /* Get the traffic to flow through the vpaths */
1565                 for (i = 0; i < vdev->no_of_vpath; i++) {
1566                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1567                         smp_wmb();
1568                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1569                 }
1570
1571                 netif_tx_wake_all_queues(vdev->ndev);
1572         }
1573
1574 out:
1575         vxge_debug_entryexit(VXGE_TRACE,
1576                 "%s:%d  Exiting...", __func__, __LINE__);
1577
1578         /* Indicate reset done */
1579         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1580                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1581         return ret;
1582 }
1583
1584 /*
1585  * vxge_reset
1586  * @vdev: pointer to ll device
1587  *
1588  * driver may reset the chip on events of serr, eccerr, etc
1589  */
1590 static int vxge_reset(struct vxgedev *vdev)
1591 {
1592         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1593 }
1594
1595 /**
1596  * vxge_poll - Receive handler when Receive Polling is used.
1597  * @dev: pointer to the device structure.
1598  * @budget: Number of packets budgeted to be processed in this iteration.
1599  *
1600  * This function comes into picture only if Receive side is being handled
1601  * through polling (called NAPI in linux). It mostly does what the normal
1602  * Rx interrupt handler does in terms of descriptor and packet processing
1603  * but not in an interrupt context. Also it will process a specified number
1604  * of packets at most in one iteration. This value is passed down by the
1605  * kernel as the function argument 'budget'.
1606  */
1607 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1608 {
1609         struct vxge_ring *ring =
1610                 container_of(napi, struct vxge_ring, napi);
1611         int budget_org = budget;
1612         ring->budget = budget;
1613
1614         vxge_hw_vpath_poll_rx(ring->handle);
1615
1616         if (ring->pkts_processed < budget_org) {
1617                 napi_complete(napi);
1618                 /* Re enable the Rx interrupts for the vpath */
1619                 vxge_hw_channel_msix_unmask(
1620                                 (struct __vxge_hw_channel *)ring->handle,
1621                                 ring->rx_vector_no);
1622         }
1623
1624         return ring->pkts_processed;
1625 }
1626
1627 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1628 {
1629         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1630         int pkts_processed = 0;
1631         int i;
1632         int budget_org = budget;
1633         struct vxge_ring *ring;
1634
1635         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1636                 pci_get_drvdata(vdev->pdev);
1637
1638         for (i = 0; i < vdev->no_of_vpath; i++) {
1639                 ring = &vdev->vpaths[i].ring;
1640                 ring->budget = budget;
1641                 vxge_hw_vpath_poll_rx(ring->handle);
1642                 pkts_processed += ring->pkts_processed;
1643                 budget -= ring->pkts_processed;
1644                 if (budget <= 0)
1645                         break;
1646         }
1647
1648         VXGE_COMPLETE_ALL_TX(vdev);
1649
1650         if (pkts_processed < budget_org) {
1651                 napi_complete(napi);
1652                 /* Re enable the Rx interrupts for the ring */
1653                 vxge_hw_device_unmask_all(hldev);
1654                 vxge_hw_device_flush_io(hldev);
1655         }
1656
1657         return pkts_processed;
1658 }
1659
1660 #ifdef CONFIG_NET_POLL_CONTROLLER
1661 /**
1662  * vxge_netpoll - netpoll event handler entry point
1663  * @dev : pointer to the device structure.
1664  * Description:
1665  *      This function will be called by upper layer to check for events on the
1666  * interface in situations where interrupts are disabled. It is used for
1667  * specific in-kernel networking tasks, such as remote consoles and kernel
1668  * debugging over the network (example netdump in RedHat).
1669  */
1670 static void vxge_netpoll(struct net_device *dev)
1671 {
1672         struct __vxge_hw_device  *hldev;
1673         struct vxgedev *vdev;
1674
1675         vdev = (struct vxgedev *)netdev_priv(dev);
1676         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1677
1678         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1679
1680         if (pci_channel_offline(vdev->pdev))
1681                 return;
1682
1683         disable_irq(dev->irq);
1684         vxge_hw_device_clear_tx_rx(hldev);
1685
1686         vxge_hw_device_clear_tx_rx(hldev);
1687         VXGE_COMPLETE_ALL_RX(vdev);
1688         VXGE_COMPLETE_ALL_TX(vdev);
1689
1690         enable_irq(dev->irq);
1691
1692         vxge_debug_entryexit(VXGE_TRACE,
1693                 "%s:%d  Exiting...", __func__, __LINE__);
1694 }
1695 #endif
1696
1697 /* RTH configuration */
1698 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1699 {
1700         enum vxge_hw_status status = VXGE_HW_OK;
1701         struct vxge_hw_rth_hash_types hash_types;
1702         u8 itable[256] = {0}; /* indirection table */
1703         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1704         int index;
1705
1706         /*
1707          * Filling
1708          *      - itable with bucket numbers
1709          *      - mtable with bucket-to-vpath mapping
1710          */
1711         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1712                 itable[index] = index;
1713                 mtable[index] = index % vdev->no_of_vpath;
1714         }
1715
1716         /* set indirection table, bucket-to-vpath mapping */
1717         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1718                                                 vdev->no_of_vpath,
1719                                                 mtable, itable,
1720                                                 vdev->config.rth_bkt_sz);
1721         if (status != VXGE_HW_OK) {
1722                 vxge_debug_init(VXGE_ERR,
1723                         "RTH indirection table configuration failed "
1724                         "for vpath:%d", vdev->vpaths[0].device_id);
1725                 return status;
1726         }
1727
1728         /* Fill RTH hash types */
1729         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1730         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1731         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1732         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1733         hash_types.hash_type_tcpipv6ex_en =
1734                                         vdev->config.rth_hash_type_tcpipv6ex;
1735         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1736
1737         /*
1738          * Because the itable_set() method uses the active_table field
1739          * for the target virtual path the RTH config should be updated
1740          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1741          * when steering frames.
1742          */
1743          for (index = 0; index < vdev->no_of_vpath; index++) {
1744                 status = vxge_hw_vpath_rts_rth_set(
1745                                 vdev->vpaths[index].handle,
1746                                 vdev->config.rth_algorithm,
1747                                 &hash_types,
1748                                 vdev->config.rth_bkt_sz);
1749
1750                  if (status != VXGE_HW_OK) {
1751                         vxge_debug_init(VXGE_ERR,
1752                                 "RTH configuration failed for vpath:%d",
1753                                 vdev->vpaths[index].device_id);
1754                         return status;
1755                  }
1756          }
1757
1758         return status;
1759 }
1760
1761 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1762 {
1763         struct vxge_mac_addrs *new_mac_entry;
1764         u8 *mac_address = NULL;
1765
1766         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1767                 return TRUE;
1768
1769         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1770         if (!new_mac_entry) {
1771                 vxge_debug_mem(VXGE_ERR,
1772                         "%s: memory allocation failed",
1773                         VXGE_DRIVER_NAME);
1774                 return FALSE;
1775         }
1776
1777         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1778
1779         /* Copy the new mac address to the list */
1780         mac_address = (u8 *)&new_mac_entry->macaddr;
1781         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1782
1783         new_mac_entry->state = mac->state;
1784         vpath->mac_addr_cnt++;
1785
1786         /* Is this a multicast address */
1787         if (0x01 & mac->macaddr[0])
1788                 vpath->mcast_addr_cnt++;
1789
1790         return TRUE;
1791 }
1792
1793 /* Add a mac address to DA table */
1794 static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
1795                                              struct macInfo *mac)
1796 {
1797         enum vxge_hw_status status = VXGE_HW_OK;
1798         struct vxge_vpath *vpath;
1799         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1800
1801         if (0x01 & mac->macaddr[0]) /* multicast address */
1802                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1803         else
1804                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1805
1806         vpath = &vdev->vpaths[mac->vpath_no];
1807         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1808                                                 mac->macmask, duplicate_mode);
1809         if (status != VXGE_HW_OK) {
1810                 vxge_debug_init(VXGE_ERR,
1811                         "DA config add entry failed for vpath:%d",
1812                         vpath->device_id);
1813         } else
1814                 if (FALSE == vxge_mac_list_add(vpath, mac))
1815                         status = -EPERM;
1816
1817         return status;
1818 }
1819
1820 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1821 {
1822         struct list_head *entry, *next;
1823         u64 del_mac = 0;
1824         u8 *mac_address = (u8 *) (&del_mac);
1825
1826         /* Copy the mac address to delete from the list */
1827         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1828
1829         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1830                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1831                         list_del(entry);
1832                         kfree((struct vxge_mac_addrs *)entry);
1833                         vpath->mac_addr_cnt--;
1834
1835                         /* Is this a multicast address */
1836                         if (0x01 & mac->macaddr[0])
1837                                 vpath->mcast_addr_cnt--;
1838                         return TRUE;
1839                 }
1840         }
1841
1842         return FALSE;
1843 }
1844 /* delete a mac address from DA table */
1845 static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
1846                                              struct macInfo *mac)
1847 {
1848         enum vxge_hw_status status = VXGE_HW_OK;
1849         struct vxge_vpath *vpath;
1850
1851         vpath = &vdev->vpaths[mac->vpath_no];
1852         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1853                                                 mac->macmask);
1854         if (status != VXGE_HW_OK) {
1855                 vxge_debug_init(VXGE_ERR,
1856                         "DA config delete entry failed for vpath:%d",
1857                         vpath->device_id);
1858         } else
1859                 vxge_mac_list_del(vpath, mac);
1860         return status;
1861 }
1862
1863 /* list all mac addresses from DA table */
1864 enum vxge_hw_status
1865 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1866                                         struct macInfo *mac)
1867 {
1868         enum vxge_hw_status status = VXGE_HW_OK;
1869         unsigned char macmask[ETH_ALEN];
1870         unsigned char macaddr[ETH_ALEN];
1871
1872         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1873                                 macaddr, macmask);
1874         if (status != VXGE_HW_OK) {
1875                 vxge_debug_init(VXGE_ERR,
1876                         "DA config list entry failed for vpath:%d",
1877                         vpath->device_id);
1878                 return status;
1879         }
1880
1881         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1882
1883                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1884                                 macaddr, macmask);
1885                 if (status != VXGE_HW_OK)
1886                         break;
1887         }
1888
1889         return status;
1890 }
1891
1892 /* Store all vlan ids from the list to the vid table */
1893 static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1894 {
1895         enum vxge_hw_status status = VXGE_HW_OK;
1896         struct vxgedev *vdev = vpath->vdev;
1897         u16 vid;
1898
1899         if (vdev->vlgrp && vpath->is_open) {
1900
1901                 for (vid = 0; vid < VLAN_N_VID; vid++) {
1902                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1903                                 continue;
1904                         /* Add these vlan to the vid table */
1905                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1906                 }
1907         }
1908
1909         return status;
1910 }
1911
1912 /* Store all mac addresses from the list to the DA table */
1913 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1914 {
1915         enum vxge_hw_status status = VXGE_HW_OK;
1916         struct macInfo mac_info;
1917         u8 *mac_address = NULL;
1918         struct list_head *entry, *next;
1919
1920         memset(&mac_info, 0, sizeof(struct macInfo));
1921
1922         if (vpath->is_open) {
1923
1924                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1925                         mac_address =
1926                                 (u8 *)&
1927                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1928                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1929                         ((struct vxge_mac_addrs *)entry)->state =
1930                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1931                         /* does this mac address already exist in da table? */
1932                         status = vxge_search_mac_addr_in_da_table(vpath,
1933                                 &mac_info);
1934                         if (status != VXGE_HW_OK) {
1935                                 /* Add this mac address to the DA table */
1936                                 status = vxge_hw_vpath_mac_addr_add(
1937                                         vpath->handle, mac_info.macaddr,
1938                                         mac_info.macmask,
1939                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1940                                 if (status != VXGE_HW_OK) {
1941                                         vxge_debug_init(VXGE_ERR,
1942                                             "DA add entry failed for vpath:%d",
1943                                             vpath->device_id);
1944                                         ((struct vxge_mac_addrs *)entry)->state
1945                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1946                                 }
1947                         }
1948                 }
1949         }
1950
1951         return status;
1952 }
1953
1954 /* reset vpaths */
1955 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1956 {
1957         enum vxge_hw_status status = VXGE_HW_OK;
1958         struct vxge_vpath *vpath;
1959         int i;
1960
1961         for (i = 0; i < vdev->no_of_vpath; i++) {
1962                 vpath = &vdev->vpaths[i];
1963                 if (vpath->handle) {
1964                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1965                                 if (is_vxge_card_up(vdev) &&
1966                                         vxge_hw_vpath_recover_from_reset(
1967                                                 vpath->handle) != VXGE_HW_OK) {
1968                                         vxge_debug_init(VXGE_ERR,
1969                                                 "vxge_hw_vpath_recover_"
1970                                                 "from_reset failed for vpath: "
1971                                                 "%d", i);
1972                                         return status;
1973                                 }
1974                         } else {
1975                                 vxge_debug_init(VXGE_ERR,
1976                                         "vxge_hw_vpath_reset failed for "
1977                                         "vpath:%d", i);
1978                                         return status;
1979                         }
1980                 }
1981         }
1982
1983         return status;
1984 }
1985
1986 /* close vpaths */
1987 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1988 {
1989         struct vxge_vpath *vpath;
1990         int i;
1991
1992         for (i = index; i < vdev->no_of_vpath; i++) {
1993                 vpath = &vdev->vpaths[i];
1994
1995                 if (vpath->handle && vpath->is_open) {
1996                         vxge_hw_vpath_close(vpath->handle);
1997                         vdev->stats.vpaths_open--;
1998                 }
1999                 vpath->is_open = 0;
2000                 vpath->handle = NULL;
2001         }
2002 }
2003
2004 /* open vpaths */
2005 static int vxge_open_vpaths(struct vxgedev *vdev)
2006 {
2007         struct vxge_hw_vpath_attr attr;
2008         enum vxge_hw_status status;
2009         struct vxge_vpath *vpath;
2010         u32 vp_id = 0;
2011         int i;
2012
2013         for (i = 0; i < vdev->no_of_vpath; i++) {
2014                 vpath = &vdev->vpaths[i];
2015
2016                 vxge_assert(vpath->is_configured);
2017                 attr.vp_id = vpath->device_id;
2018                 attr.fifo_attr.callback = vxge_xmit_compl;
2019                 attr.fifo_attr.txdl_term = vxge_tx_term;
2020                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2021                 attr.fifo_attr.userdata = &vpath->fifo;
2022
2023                 attr.ring_attr.callback = vxge_rx_1b_compl;
2024                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2025                 attr.ring_attr.rxd_term = vxge_rx_term;
2026                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2027                 attr.ring_attr.userdata = &vpath->ring;
2028
2029                 vpath->ring.ndev = vdev->ndev;
2030                 vpath->ring.pdev = vdev->pdev;
2031                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2032                 if (status == VXGE_HW_OK) {
2033                         vpath->fifo.handle =
2034                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2035                         vpath->ring.handle =
2036                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2037                         vpath->fifo.tx_steering_type =
2038                                 vdev->config.tx_steering_type;
2039                         vpath->fifo.ndev = vdev->ndev;
2040                         vpath->fifo.pdev = vdev->pdev;
2041                         if (vdev->config.tx_steering_type)
2042                                 vpath->fifo.txq =
2043                                         netdev_get_tx_queue(vdev->ndev, i);
2044                         else
2045                                 vpath->fifo.txq =
2046                                         netdev_get_tx_queue(vdev->ndev, 0);
2047                         vpath->fifo.indicate_max_pkts =
2048                                 vdev->config.fifo_indicate_max_pkts;
2049                         vpath->ring.rx_vector_no = 0;
2050                         vpath->ring.rx_csum = vdev->rx_csum;
2051                         vpath->ring.rx_hwts = vdev->rx_hwts;
2052                         vpath->is_open = 1;
2053                         vdev->vp_handles[i] = vpath->handle;
2054                         vpath->ring.gro_enable = vdev->config.gro_enable;
2055                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2056                         vdev->stats.vpaths_open++;
2057                 } else {
2058                         vdev->stats.vpath_open_fail++;
2059                         vxge_debug_init(VXGE_ERR,
2060                                 "%s: vpath: %d failed to open "
2061                                 "with status: %d",
2062                             vdev->ndev->name, vpath->device_id,
2063                                 status);
2064                         vxge_close_vpaths(vdev, 0);
2065                         return -EPERM;
2066                 }
2067
2068                 vp_id = vpath->handle->vpath->vp_id;
2069                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2070         }
2071         return VXGE_HW_OK;
2072 }
2073
2074 /*
2075  *  vxge_isr_napi
2076  *  @irq: the irq of the device.
2077  *  @dev_id: a void pointer to the hldev structure of the Titan device
2078  *  @ptregs: pointer to the registers pushed on the stack.
2079  *
2080  *  This function is the ISR handler of the device when napi is enabled. It
2081  *  identifies the reason for the interrupt and calls the relevant service
2082  *  routines.
2083  */
2084 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2085 {
2086         struct net_device *dev;
2087         struct __vxge_hw_device *hldev;
2088         u64 reason;
2089         enum vxge_hw_status status;
2090         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2091
2092         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2093
2094         dev = vdev->ndev;
2095         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2096
2097         if (pci_channel_offline(vdev->pdev))
2098                 return IRQ_NONE;
2099
2100         if (unlikely(!is_vxge_card_up(vdev)))
2101                 return IRQ_HANDLED;
2102
2103         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2104                         &reason);
2105         if (status == VXGE_HW_OK) {
2106                 vxge_hw_device_mask_all(hldev);
2107
2108                 if (reason &
2109                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2110                         vdev->vpaths_deployed >>
2111                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2112
2113                         vxge_hw_device_clear_tx_rx(hldev);
2114                         napi_schedule(&vdev->napi);
2115                         vxge_debug_intr(VXGE_TRACE,
2116                                 "%s:%d  Exiting...", __func__, __LINE__);
2117                         return IRQ_HANDLED;
2118                 } else
2119                         vxge_hw_device_unmask_all(hldev);
2120         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2121                 (status == VXGE_HW_ERR_CRITICAL) ||
2122                 (status == VXGE_HW_ERR_FIFO))) {
2123                 vxge_hw_device_mask_all(hldev);
2124                 vxge_hw_device_flush_io(hldev);
2125                 return IRQ_HANDLED;
2126         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2127                 return IRQ_HANDLED;
2128
2129         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2130         return IRQ_NONE;
2131 }
2132
2133 #ifdef CONFIG_PCI_MSI
2134
2135 static irqreturn_t
2136 vxge_tx_msix_handle(int irq, void *dev_id)
2137 {
2138         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2139
2140         VXGE_COMPLETE_VPATH_TX(fifo);
2141
2142         return IRQ_HANDLED;
2143 }
2144
2145 static irqreturn_t
2146 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2147 {
2148         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2149
2150         /* MSIX_IDX for Rx is 1 */
2151         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2152                                         ring->rx_vector_no);
2153
2154         napi_schedule(&ring->napi);
2155         return IRQ_HANDLED;
2156 }
2157
2158 static irqreturn_t
2159 vxge_alarm_msix_handle(int irq, void *dev_id)
2160 {
2161         int i;
2162         enum vxge_hw_status status;
2163         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2164         struct vxgedev *vdev = vpath->vdev;
2165         int msix_id = (vpath->handle->vpath->vp_id *
2166                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2167
2168         for (i = 0; i < vdev->no_of_vpath; i++) {
2169                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2170
2171                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2172                         vdev->exec_mode);
2173                 if (status == VXGE_HW_OK) {
2174
2175                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2176                                         msix_id);
2177                         continue;
2178                 }
2179                 vxge_debug_intr(VXGE_ERR,
2180                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2181                         VXGE_DRIVER_NAME, status);
2182         }
2183         return IRQ_HANDLED;
2184 }
2185
2186 static int vxge_alloc_msix(struct vxgedev *vdev)
2187 {
2188         int j, i, ret = 0;
2189         int msix_intr_vect = 0, temp;
2190         vdev->intr_cnt = 0;
2191
2192 start:
2193         /* Tx/Rx MSIX Vectors count */
2194         vdev->intr_cnt = vdev->no_of_vpath * 2;
2195
2196         /* Alarm MSIX Vectors count */
2197         vdev->intr_cnt++;
2198
2199         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2200                                 GFP_KERNEL);
2201         if (!vdev->entries) {
2202                 vxge_debug_init(VXGE_ERR,
2203                         "%s: memory allocation failed",
2204                         VXGE_DRIVER_NAME);
2205                 ret = -ENOMEM;
2206                 goto alloc_entries_failed;
2207         }
2208
2209         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2210                                      sizeof(struct vxge_msix_entry),
2211                                      GFP_KERNEL);
2212         if (!vdev->vxge_entries) {
2213                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2214                         VXGE_DRIVER_NAME);
2215                 ret = -ENOMEM;
2216                 goto alloc_vxge_entries_failed;
2217         }
2218
2219         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2220
2221                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2222
2223                 /* Initialize the fifo vector */
2224                 vdev->entries[j].entry = msix_intr_vect;
2225                 vdev->vxge_entries[j].entry = msix_intr_vect;
2226                 vdev->vxge_entries[j].in_use = 0;
2227                 j++;
2228
2229                 /* Initialize the ring vector */
2230                 vdev->entries[j].entry = msix_intr_vect + 1;
2231                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2232                 vdev->vxge_entries[j].in_use = 0;
2233                 j++;
2234         }
2235
2236         /* Initialize the alarm vector */
2237         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2238         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2239         vdev->vxge_entries[j].in_use = 0;
2240
2241         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2242         if (ret > 0) {
2243                 vxge_debug_init(VXGE_ERR,
2244                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2245                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2246                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2247                         ret = -ENODEV;
2248                         goto enable_msix_failed;
2249                 }
2250
2251                 kfree(vdev->entries);
2252                 kfree(vdev->vxge_entries);
2253                 vdev->entries = NULL;
2254                 vdev->vxge_entries = NULL;
2255                 /* Try with less no of vector by reducing no of vpaths count */
2256                 temp = (ret - 1)/2;
2257                 vxge_close_vpaths(vdev, temp);
2258                 vdev->no_of_vpath = temp;
2259                 goto start;
2260         } else if (ret < 0) {
2261                 ret = -ENODEV;
2262                 goto enable_msix_failed;
2263         }
2264         return 0;
2265
2266 enable_msix_failed:
2267         kfree(vdev->vxge_entries);
2268 alloc_vxge_entries_failed:
2269         kfree(vdev->entries);
2270 alloc_entries_failed:
2271         return ret;
2272 }
2273
2274 static int vxge_enable_msix(struct vxgedev *vdev)
2275 {
2276
2277         int i, ret = 0;
2278         /* 0 - Tx, 1 - Rx  */
2279         int tim_msix_id[4] = {0, 1, 0, 0};
2280
2281         vdev->intr_cnt = 0;
2282
2283         /* allocate msix vectors */
2284         ret = vxge_alloc_msix(vdev);
2285         if (!ret) {
2286                 for (i = 0; i < vdev->no_of_vpath; i++) {
2287                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2288
2289                         /* If fifo or ring are not enabled, the MSIX vector for
2290                          * it should be set to 0.
2291                          */
2292                         vpath->ring.rx_vector_no = (vpath->device_id *
2293                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2294
2295                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2296                                                VXGE_ALARM_MSIX_ID);
2297                 }
2298         }
2299
2300         return ret;
2301 }
2302
2303 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2304 {
2305         int intr_cnt;
2306
2307         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2308                 intr_cnt++) {
2309                 if (vdev->vxge_entries[intr_cnt].in_use) {
2310                         synchronize_irq(vdev->entries[intr_cnt].vector);
2311                         free_irq(vdev->entries[intr_cnt].vector,
2312                                 vdev->vxge_entries[intr_cnt].arg);
2313                         vdev->vxge_entries[intr_cnt].in_use = 0;
2314                 }
2315         }
2316
2317         kfree(vdev->entries);
2318         kfree(vdev->vxge_entries);
2319         vdev->entries = NULL;
2320         vdev->vxge_entries = NULL;
2321
2322         if (vdev->config.intr_type == MSI_X)
2323                 pci_disable_msix(vdev->pdev);
2324 }
2325 #endif
2326
2327 static void vxge_rem_isr(struct vxgedev *vdev)
2328 {
2329         struct __vxge_hw_device  *hldev;
2330         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2331
2332 #ifdef CONFIG_PCI_MSI
2333         if (vdev->config.intr_type == MSI_X) {
2334                 vxge_rem_msix_isr(vdev);
2335         } else
2336 #endif
2337         if (vdev->config.intr_type == INTA) {
2338                         synchronize_irq(vdev->pdev->irq);
2339                         free_irq(vdev->pdev->irq, vdev);
2340         }
2341 }
2342
2343 static int vxge_add_isr(struct vxgedev *vdev)
2344 {
2345         int ret = 0;
2346 #ifdef CONFIG_PCI_MSI
2347         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2348         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2349
2350         if (vdev->config.intr_type == MSI_X)
2351                 ret = vxge_enable_msix(vdev);
2352
2353         if (ret) {
2354                 vxge_debug_init(VXGE_ERR,
2355                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2356                 vxge_debug_init(VXGE_ERR,
2357                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2358                 vdev->config.intr_type = INTA;
2359         }
2360
2361         if (vdev->config.intr_type == MSI_X) {
2362                 for (intr_idx = 0;
2363                      intr_idx < (vdev->no_of_vpath *
2364                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2365
2366                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2367                         irq_req = 0;
2368
2369                         switch (msix_idx) {
2370                         case 0:
2371                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2372                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2373                                         vdev->ndev->name,
2374                                         vdev->entries[intr_cnt].entry,
2375                                         pci_fun, vp_idx);
2376                                 ret = request_irq(
2377                                     vdev->entries[intr_cnt].vector,
2378                                         vxge_tx_msix_handle, 0,
2379                                         vdev->desc[intr_cnt],
2380                                         &vdev->vpaths[vp_idx].fifo);
2381                                         vdev->vxge_entries[intr_cnt].arg =
2382                                                 &vdev->vpaths[vp_idx].fifo;
2383                                 irq_req = 1;
2384                                 break;
2385                         case 1:
2386                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2387                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2388                                         vdev->ndev->name,
2389                                         vdev->entries[intr_cnt].entry,
2390                                         pci_fun, vp_idx);
2391                                 ret = request_irq(
2392                                     vdev->entries[intr_cnt].vector,
2393                                         vxge_rx_msix_napi_handle,
2394                                         0,
2395                                         vdev->desc[intr_cnt],
2396                                         &vdev->vpaths[vp_idx].ring);
2397                                         vdev->vxge_entries[intr_cnt].arg =
2398                                                 &vdev->vpaths[vp_idx].ring;
2399                                 irq_req = 1;
2400                                 break;
2401                         }
2402
2403                         if (ret) {
2404                                 vxge_debug_init(VXGE_ERR,
2405                                         "%s: MSIX - %d  Registration failed",
2406                                         vdev->ndev->name, intr_cnt);
2407                                 vxge_rem_msix_isr(vdev);
2408                                 vdev->config.intr_type = INTA;
2409                                 vxge_debug_init(VXGE_ERR,
2410                                         "%s: Defaulting to INTA"
2411                                         , vdev->ndev->name);
2412                                         goto INTA_MODE;
2413                         }
2414
2415                         if (irq_req) {
2416                                 /* We requested for this msix interrupt */
2417                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2418                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2419                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2420                                 vxge_hw_vpath_msix_unmask(
2421                                         vdev->vpaths[vp_idx].handle,
2422                                         msix_idx);
2423                                 intr_cnt++;
2424                         }
2425
2426                         /* Point to next vpath handler */
2427                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2428                             (vp_idx < (vdev->no_of_vpath - 1)))
2429                                 vp_idx++;
2430                 }
2431
2432                 intr_cnt = vdev->no_of_vpath * 2;
2433                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2434                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2435                         vdev->ndev->name,
2436                         vdev->entries[intr_cnt].entry,
2437                         pci_fun);
2438                 /* For Alarm interrupts */
2439                 ret = request_irq(vdev->entries[intr_cnt].vector,
2440                                         vxge_alarm_msix_handle, 0,
2441                                         vdev->desc[intr_cnt],
2442                                         &vdev->vpaths[0]);
2443                 if (ret) {
2444                         vxge_debug_init(VXGE_ERR,
2445                                 "%s: MSIX - %d Registration failed",
2446                                 vdev->ndev->name, intr_cnt);
2447                         vxge_rem_msix_isr(vdev);
2448                         vdev->config.intr_type = INTA;
2449                         vxge_debug_init(VXGE_ERR,
2450                                 "%s: Defaulting to INTA",
2451                                 vdev->ndev->name);
2452                                 goto INTA_MODE;
2453                 }
2454
2455                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2456                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2457                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2458                                         msix_idx);
2459                 vdev->vxge_entries[intr_cnt].in_use = 1;
2460                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2461         }
2462 INTA_MODE:
2463 #endif
2464
2465         if (vdev->config.intr_type == INTA) {
2466                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2467                         "%s:vxge:INTA", vdev->ndev->name);
2468                 vxge_hw_device_set_intr_type(vdev->devh,
2469                         VXGE_HW_INTR_MODE_IRQLINE);
2470                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2471                         vdev->vpaths[0].device_id);
2472                 ret = request_irq((int) vdev->pdev->irq,
2473                         vxge_isr_napi,
2474                         IRQF_SHARED, vdev->desc[0], vdev);
2475                 if (ret) {
2476                         vxge_debug_init(VXGE_ERR,
2477                                 "%s %s-%d: ISR registration failed",
2478                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2479                         return -ENODEV;
2480                 }
2481                 vxge_debug_init(VXGE_TRACE,
2482                         "new %s-%d line allocated",
2483                         "IRQ", vdev->pdev->irq);
2484         }
2485
2486         return VXGE_HW_OK;
2487 }
2488
2489 static void vxge_poll_vp_reset(unsigned long data)
2490 {
2491         struct vxgedev *vdev = (struct vxgedev *)data;
2492         int i, j = 0;
2493
2494         for (i = 0; i < vdev->no_of_vpath; i++) {
2495                 if (test_bit(i, &vdev->vp_reset)) {
2496                         vxge_reset_vpath(vdev, i);
2497                         j++;
2498                 }
2499         }
2500         if (j && (vdev->config.intr_type != MSI_X)) {
2501                 vxge_hw_device_unmask_all(vdev->devh);
2502                 vxge_hw_device_flush_io(vdev->devh);
2503         }
2504
2505         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2506 }
2507
2508 static void vxge_poll_vp_lockup(unsigned long data)
2509 {
2510         struct vxgedev *vdev = (struct vxgedev *)data;
2511         enum vxge_hw_status status = VXGE_HW_OK;
2512         struct vxge_vpath *vpath;
2513         struct vxge_ring *ring;
2514         int i;
2515
2516         for (i = 0; i < vdev->no_of_vpath; i++) {
2517                 ring = &vdev->vpaths[i].ring;
2518                 /* Did this vpath received any packets */
2519                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2520                         status = vxge_hw_vpath_check_leak(ring->handle);
2521
2522                         /* Did it received any packets last time */
2523                         if ((VXGE_HW_FAIL == status) &&
2524                                 (VXGE_HW_FAIL == ring->last_status)) {
2525
2526                                 /* schedule vpath reset */
2527                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2528                                         vpath = &vdev->vpaths[i];
2529
2530                                         /* disable interrupts for this vpath */
2531                                         vxge_vpath_intr_disable(vdev, i);
2532
2533                                         /* stop the queue for this vpath */
2534                                         netif_tx_stop_queue(vpath->fifo.txq);
2535                                         continue;
2536                                 }
2537                         }
2538                 }
2539                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2540                 ring->last_status = status;
2541         }
2542
2543         /* Check every 1 milli second */
2544         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2545 }
2546
2547 /**
2548  * vxge_open
2549  * @dev: pointer to the device structure.
2550  *
2551  * This function is the open entry point of the driver. It mainly calls a
2552  * function to allocate Rx buffers and inserts them into the buffer
2553  * descriptors and then enables the Rx part of the NIC.
2554  * Return value: '0' on success and an appropriate (-)ve integer as
2555  * defined in errno.h file on failure.
2556  */
2557 static int
2558 vxge_open(struct net_device *dev)
2559 {
2560         enum vxge_hw_status status;
2561         struct vxgedev *vdev;
2562         struct __vxge_hw_device *hldev;
2563         struct vxge_vpath *vpath;
2564         int ret = 0;
2565         int i;
2566         u64 val64, function_mode;
2567         vxge_debug_entryexit(VXGE_TRACE,
2568                 "%s: %s:%d", dev->name, __func__, __LINE__);
2569
2570         vdev = (struct vxgedev *)netdev_priv(dev);
2571         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2572         function_mode = vdev->config.device_hw_info.function_mode;
2573
2574         /* make sure you have link off by default every time Nic is
2575          * initialized */
2576         netif_carrier_off(dev);
2577
2578         /* Open VPATHs */
2579         status = vxge_open_vpaths(vdev);
2580         if (status != VXGE_HW_OK) {
2581                 vxge_debug_init(VXGE_ERR,
2582                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2583                 ret = -EPERM;
2584                 goto out0;
2585         }
2586
2587         vdev->mtu = dev->mtu;
2588
2589         status = vxge_add_isr(vdev);
2590         if (status != VXGE_HW_OK) {
2591                 vxge_debug_init(VXGE_ERR,
2592                         "%s: fatal: ISR add failed", dev->name);
2593                 ret = -EPERM;
2594                 goto out1;
2595         }
2596
2597         if (vdev->config.intr_type != MSI_X) {
2598                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2599                         vdev->config.napi_weight);
2600                 napi_enable(&vdev->napi);
2601                 for (i = 0; i < vdev->no_of_vpath; i++) {
2602                         vpath = &vdev->vpaths[i];
2603                         vpath->ring.napi_p = &vdev->napi;
2604                 }
2605         } else {
2606                 for (i = 0; i < vdev->no_of_vpath; i++) {
2607                         vpath = &vdev->vpaths[i];
2608                         netif_napi_add(dev, &vpath->ring.napi,
2609                             vxge_poll_msix, vdev->config.napi_weight);
2610                         napi_enable(&vpath->ring.napi);
2611                         vpath->ring.napi_p = &vpath->ring.napi;
2612                 }
2613         }
2614
2615         /* configure RTH */
2616         if (vdev->config.rth_steering) {
2617                 status = vxge_rth_configure(vdev);
2618                 if (status != VXGE_HW_OK) {
2619                         vxge_debug_init(VXGE_ERR,
2620                                 "%s: fatal: RTH configuration failed",
2621                                 dev->name);
2622                         ret = -EPERM;
2623                         goto out2;
2624                 }
2625         }
2626         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2627                hldev->config.rth_en ? "enabled" : "disabled");
2628
2629         for (i = 0; i < vdev->no_of_vpath; i++) {
2630                 vpath = &vdev->vpaths[i];
2631
2632                 /* set initial mtu before enabling the device */
2633                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2634                 if (status != VXGE_HW_OK) {
2635                         vxge_debug_init(VXGE_ERR,
2636                                 "%s: fatal: can not set new MTU", dev->name);
2637                         ret = -EPERM;
2638                         goto out2;
2639                 }
2640         }
2641
2642         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2643         vxge_debug_init(vdev->level_trace,
2644                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2645         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2646
2647         /* Restore the DA, VID table and also multicast and promiscuous mode
2648          * states
2649          */
2650         if (vdev->all_multi_flg) {
2651                 for (i = 0; i < vdev->no_of_vpath; i++) {
2652                         vpath = &vdev->vpaths[i];
2653                         vxge_restore_vpath_mac_addr(vpath);
2654                         vxge_restore_vpath_vid_table(vpath);
2655
2656                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2657                         if (status != VXGE_HW_OK)
2658                                 vxge_debug_init(VXGE_ERR,
2659                                         "%s:%d Enabling multicast failed",
2660                                         __func__, __LINE__);
2661                 }
2662         }
2663
2664         /* Enable vpath to sniff all unicast/multicast traffic that not
2665          * addressed to them. We allow promiscous mode for PF only
2666          */
2667
2668         val64 = 0;
2669         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2670                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2671
2672         vxge_hw_mgmt_reg_write(vdev->devh,
2673                 vxge_hw_mgmt_reg_type_mrpcim,
2674                 0,
2675                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2676                         rxmac_authorize_all_addr),
2677                 val64);
2678
2679         vxge_hw_mgmt_reg_write(vdev->devh,
2680                 vxge_hw_mgmt_reg_type_mrpcim,
2681                 0,
2682                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2683                         rxmac_authorize_all_vid),
2684                 val64);
2685
2686         vxge_set_multicast(dev);
2687
2688         /* Enabling Bcast and mcast for all vpath */
2689         for (i = 0; i < vdev->no_of_vpath; i++) {
2690                 vpath = &vdev->vpaths[i];
2691                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2692                 if (status != VXGE_HW_OK)
2693                         vxge_debug_init(VXGE_ERR,
2694                                 "%s : Can not enable bcast for vpath "
2695                                 "id %d", dev->name, i);
2696                 if (vdev->config.addr_learn_en) {
2697                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2698                         if (status != VXGE_HW_OK)
2699                                 vxge_debug_init(VXGE_ERR,
2700                                         "%s : Can not enable mcast for vpath "
2701                                         "id %d", dev->name, i);
2702                 }
2703         }
2704
2705         vxge_hw_device_setpause_data(vdev->devh, 0,
2706                 vdev->config.tx_pause_enable,
2707                 vdev->config.rx_pause_enable);
2708
2709         if (vdev->vp_reset_timer.function == NULL)
2710                 vxge_os_timer(vdev->vp_reset_timer,
2711                         vxge_poll_vp_reset, vdev, (HZ/2));
2712
2713         if (vdev->vp_lockup_timer.function == NULL)
2714                 vxge_os_timer(vdev->vp_lockup_timer,
2715                         vxge_poll_vp_lockup, vdev, (HZ/2));
2716
2717         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2718
2719         smp_wmb();
2720
2721         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2722                 netif_carrier_on(vdev->ndev);
2723                 netdev_notice(vdev->ndev, "Link Up\n");
2724                 vdev->stats.link_up++;
2725         }
2726
2727         vxge_hw_device_intr_enable(vdev->devh);
2728
2729         smp_wmb();
2730
2731         for (i = 0; i < vdev->no_of_vpath; i++) {
2732                 vpath = &vdev->vpaths[i];
2733
2734                 vxge_hw_vpath_enable(vpath->handle);
2735                 smp_wmb();
2736                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2737         }
2738
2739         netif_tx_start_all_queues(vdev->ndev);
2740         goto out0;
2741
2742 out2:
2743         vxge_rem_isr(vdev);
2744
2745         /* Disable napi */
2746         if (vdev->config.intr_type != MSI_X)
2747                 napi_disable(&vdev->napi);
2748         else {
2749                 for (i = 0; i < vdev->no_of_vpath; i++)
2750                         napi_disable(&vdev->vpaths[i].ring.napi);
2751         }
2752
2753 out1:
2754         vxge_close_vpaths(vdev, 0);
2755 out0:
2756         vxge_debug_entryexit(VXGE_TRACE,
2757                                 "%s: %s:%d  Exiting...",
2758                                 dev->name, __func__, __LINE__);
2759         return ret;
2760 }
2761
2762 /* Loop throught the mac address list and delete all the entries */
2763 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2764 {
2765
2766         struct list_head *entry, *next;
2767         if (list_empty(&vpath->mac_addr_list))
2768                 return;
2769
2770         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2771                 list_del(entry);
2772                 kfree((struct vxge_mac_addrs *)entry);
2773         }
2774 }
2775
2776 static void vxge_napi_del_all(struct vxgedev *vdev)
2777 {
2778         int i;
2779         if (vdev->config.intr_type != MSI_X)
2780                 netif_napi_del(&vdev->napi);
2781         else {
2782                 for (i = 0; i < vdev->no_of_vpath; i++)
2783                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2784         }
2785 }
2786
2787 static int do_vxge_close(struct net_device *dev, int do_io)
2788 {
2789         enum vxge_hw_status status;
2790         struct vxgedev *vdev;
2791         struct __vxge_hw_device *hldev;
2792         int i;
2793         u64 val64, vpath_vector;
2794         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2795                 dev->name, __func__, __LINE__);
2796
2797         vdev = (struct vxgedev *)netdev_priv(dev);
2798         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2799
2800         if (unlikely(!is_vxge_card_up(vdev)))
2801                 return 0;
2802
2803         /* If vxge_handle_crit_err task is executing,
2804          * wait till it completes. */
2805         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2806                 msleep(50);
2807
2808         if (do_io) {
2809                 /* Put the vpath back in normal mode */
2810                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2811                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2812                                 vxge_hw_mgmt_reg_type_mrpcim,
2813                                 0,
2814                                 (ulong)offsetof(
2815                                         struct vxge_hw_mrpcim_reg,
2816                                         rts_mgr_cbasin_cfg),
2817                                 &val64);
2818
2819                 if (status == VXGE_HW_OK) {
2820                         val64 &= ~vpath_vector;
2821                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2822                                         vxge_hw_mgmt_reg_type_mrpcim,
2823                                         0,
2824                                         (ulong)offsetof(
2825                                                 struct vxge_hw_mrpcim_reg,
2826                                                 rts_mgr_cbasin_cfg),
2827                                         val64);
2828                 }
2829
2830                 /* Remove the function 0 from promiscous mode */
2831                 vxge_hw_mgmt_reg_write(vdev->devh,
2832                         vxge_hw_mgmt_reg_type_mrpcim,
2833                         0,
2834                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2835                                 rxmac_authorize_all_addr),
2836                         0);
2837
2838                 vxge_hw_mgmt_reg_write(vdev->devh,
2839                         vxge_hw_mgmt_reg_type_mrpcim,
2840                         0,
2841                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2842                                 rxmac_authorize_all_vid),
2843                         0);
2844
2845                 smp_wmb();
2846         }
2847         del_timer_sync(&vdev->vp_lockup_timer);
2848
2849         del_timer_sync(&vdev->vp_reset_timer);
2850
2851         if (do_io)
2852                 vxge_hw_device_wait_receive_idle(hldev);
2853
2854         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2855
2856         /* Disable napi */
2857         if (vdev->config.intr_type != MSI_X)
2858                 napi_disable(&vdev->napi);
2859         else {
2860                 for (i = 0; i < vdev->no_of_vpath; i++)
2861                         napi_disable(&vdev->vpaths[i].ring.napi);
2862         }
2863
2864         netif_carrier_off(vdev->ndev);
2865         netdev_notice(vdev->ndev, "Link Down\n");
2866         netif_tx_stop_all_queues(vdev->ndev);
2867
2868         /* Note that at this point xmit() is stopped by upper layer */
2869         if (do_io)
2870                 vxge_hw_device_intr_disable(vdev->devh);
2871
2872         vxge_rem_isr(vdev);
2873
2874         vxge_napi_del_all(vdev);
2875
2876         if (do_io)
2877                 vxge_reset_all_vpaths(vdev);
2878
2879         vxge_close_vpaths(vdev, 0);
2880
2881         vxge_debug_entryexit(VXGE_TRACE,
2882                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2883
2884         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2885
2886         return 0;
2887 }
2888
2889 /**
2890  * vxge_close
2891  * @dev: device pointer.
2892  *
2893  * This is the stop entry point of the driver. It needs to undo exactly
2894  * whatever was done by the open entry point, thus it's usually referred to
2895  * as the close function.Among other things this function mainly stops the
2896  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2897  * Return value: '0' on success and an appropriate (-)ve integer as
2898  * defined in errno.h file on failure.
2899  */
2900 static int
2901 vxge_close(struct net_device *dev)
2902 {
2903         do_vxge_close(dev, 1);
2904         return 0;
2905 }
2906
2907 /**
2908  * vxge_change_mtu
2909  * @dev: net device pointer.
2910  * @new_mtu :the new MTU size for the device.
2911  *
2912  * A driver entry point to change MTU size for the device. Before changing
2913  * the MTU the device must be stopped.
2914  */
2915 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2916 {
2917         struct vxgedev *vdev = netdev_priv(dev);
2918
2919         vxge_debug_entryexit(vdev->level_trace,
2920                 "%s:%d", __func__, __LINE__);
2921         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2922                 vxge_debug_init(vdev->level_err,
2923                         "%s: mtu size is invalid", dev->name);
2924                 return -EPERM;
2925         }
2926
2927         /* check if device is down already */
2928         if (unlikely(!is_vxge_card_up(vdev))) {
2929                 /* just store new value, will use later on open() */
2930                 dev->mtu = new_mtu;
2931                 vxge_debug_init(vdev->level_err,
2932                         "%s", "device is down on MTU change");
2933                 return 0;
2934         }
2935
2936         vxge_debug_init(vdev->level_trace,
2937                 "trying to apply new MTU %d", new_mtu);
2938
2939         if (vxge_close(dev))
2940                 return -EIO;
2941
2942         dev->mtu = new_mtu;
2943         vdev->mtu = new_mtu;
2944
2945         if (vxge_open(dev))
2946                 return -EIO;
2947
2948         vxge_debug_init(vdev->level_trace,
2949                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2950
2951         vxge_debug_entryexit(vdev->level_trace,
2952                 "%s:%d  Exiting...", __func__, __LINE__);
2953
2954         return 0;
2955 }
2956
2957 /**
2958  * vxge_get_stats64
2959  * @dev: pointer to the device structure
2960  * @stats: pointer to struct rtnl_link_stats64
2961  *
2962  */
2963 static struct rtnl_link_stats64 *
2964 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2965 {
2966         struct vxgedev *vdev = netdev_priv(dev);
2967         int k;
2968
2969         /* net_stats already zeroed by caller */
2970         for (k = 0; k < vdev->no_of_vpath; k++) {
2971                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2972                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2973                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2974                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2975                 net_stats->rx_dropped +=
2976                         vdev->vpaths[k].ring.stats.rx_dropped;
2977
2978                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2979                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2980                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2981         }
2982
2983         return net_stats;
2984 }
2985
2986 static enum vxge_hw_status vxge_timestamp_config(struct vxgedev *vdev,
2987                                                  int enable)
2988 {
2989         enum vxge_hw_status status;
2990         u64 val64;
2991
2992         /* Timestamp is passed to the driver via the FCS, therefore we
2993          * must disable the FCS stripping by the adapter.  Since this is
2994          * required for the driver to load (due to a hardware bug),
2995          * there is no need to do anything special here.
2996          */
2997         if (enable)
2998                 val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
2999                         VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3000                         VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3001         else
3002                 val64 = 0;
3003
3004         status = vxge_hw_mgmt_reg_write(vdev->devh,
3005                                         vxge_hw_mgmt_reg_type_mrpcim,
3006                                         0,
3007                                         offsetof(struct vxge_hw_mrpcim_reg,
3008                                                  xmac_timestamp),
3009                                         val64);
3010         vxge_hw_device_flush_io(vdev->devh);
3011         return status;
3012 }
3013
3014 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3015 {
3016         struct hwtstamp_config config;
3017         enum vxge_hw_status status;
3018         int i;
3019
3020         if (copy_from_user(&config, data, sizeof(config)))
3021                 return -EFAULT;
3022
3023         /* reserved for future extensions */
3024         if (config.flags)
3025                 return -EINVAL;
3026
3027         /* Transmit HW Timestamp not supported */
3028         switch (config.tx_type) {
3029         case HWTSTAMP_TX_OFF:
3030                 break;
3031         case HWTSTAMP_TX_ON:
3032         default:
3033                 return -ERANGE;
3034         }
3035
3036         switch (config.rx_filter) {
3037         case HWTSTAMP_FILTER_NONE:
3038                 status = vxge_timestamp_config(vdev, 0);
3039                 if (status != VXGE_HW_OK)
3040                         return -EFAULT;
3041
3042                 vdev->rx_hwts = 0;
3043                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3044                 break;
3045
3046         case HWTSTAMP_FILTER_ALL:
3047         case HWTSTAMP_FILTER_SOME:
3048         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3049         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3050         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3051         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3052         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3053         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3054         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3055         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3056         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3057         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3058         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3059         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3060                 status = vxge_timestamp_config(vdev, 1);
3061                 if (status != VXGE_HW_OK)
3062                         return -EFAULT;
3063
3064                 vdev->rx_hwts = 1;
3065                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3066                 break;
3067
3068         default:
3069                  return -ERANGE;
3070         }
3071
3072         for (i = 0; i < vdev->no_of_vpath; i++)
3073                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3074
3075         if (copy_to_user(data, &config, sizeof(config)))
3076                 return -EFAULT;
3077
3078         return 0;
3079 }
3080
3081 /**
3082  * vxge_ioctl
3083  * @dev: Device pointer.
3084  * @ifr: An IOCTL specific structure, that can contain a pointer to
3085  *       a proprietary structure used to pass information to the driver.
3086  * @cmd: This is used to distinguish between the different commands that
3087  *       can be passed to the IOCTL functions.
3088  *
3089  * Entry point for the Ioctl.
3090  */
3091 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3092 {
3093         struct vxgedev *vdev = netdev_priv(dev);
3094         int ret;
3095
3096         switch (cmd) {
3097         case SIOCSHWTSTAMP:
3098                 ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3099                 if (ret)
3100                         return ret;
3101                 break;
3102         default:
3103                 return -EOPNOTSUPP;
3104         }
3105
3106         return 0;
3107 }
3108
3109 /**
3110  * vxge_tx_watchdog
3111  * @dev: pointer to net device structure
3112  *
3113  * Watchdog for transmit side.
3114  * This function is triggered if the Tx Queue is stopped
3115  * for a pre-defined amount of time when the Interface is still up.
3116  */
3117 static void
3118 vxge_tx_watchdog(struct net_device *dev)
3119 {
3120         struct vxgedev *vdev;
3121
3122         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3123
3124         vdev = (struct vxgedev *)netdev_priv(dev);
3125
3126         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3127
3128         vxge_reset(vdev);
3129         vxge_debug_entryexit(VXGE_TRACE,
3130                 "%s:%d  Exiting...", __func__, __LINE__);
3131 }
3132
3133 /**
3134  * vxge_vlan_rx_register
3135  * @dev: net device pointer.
3136  * @grp: vlan group
3137  *
3138  * Vlan group registration
3139  */
3140 static void
3141 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3142 {
3143         struct vxgedev *vdev;
3144         struct vxge_vpath *vpath;
3145         int vp;
3146         u64 vid;
3147         enum vxge_hw_status status;
3148         int i;
3149
3150         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3151
3152         vdev = (struct vxgedev *)netdev_priv(dev);
3153
3154         vpath = &vdev->vpaths[0];
3155         if ((NULL == grp) && (vpath->is_open)) {
3156                 /* Get the first vlan */
3157                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3158
3159                 while (status == VXGE_HW_OK) {
3160
3161                         /* Delete this vlan from the vid table */
3162                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3163                                 vpath = &vdev->vpaths[vp];
3164                                 if (!vpath->is_open)
3165                                         continue;
3166
3167                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3168                         }
3169
3170                         /* Get the next vlan to be deleted */
3171                         vpath = &vdev->vpaths[0];
3172                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3173                 }
3174         }
3175
3176         vdev->vlgrp = grp;
3177
3178         for (i = 0; i < vdev->no_of_vpath; i++) {
3179                 if (vdev->vpaths[i].is_configured)
3180                         vdev->vpaths[i].ring.vlgrp = grp;
3181         }
3182
3183         vxge_debug_entryexit(VXGE_TRACE,
3184                 "%s:%d  Exiting...", __func__, __LINE__);
3185 }
3186
3187 /**
3188  * vxge_vlan_rx_add_vid
3189  * @dev: net device pointer.
3190  * @vid: vid
3191  *
3192  * Add the vlan id to the devices vlan id table
3193  */
3194 static void
3195 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3196 {
3197         struct vxgedev *vdev;
3198         struct vxge_vpath *vpath;
3199         int vp_id;
3200
3201         vdev = (struct vxgedev *)netdev_priv(dev);
3202
3203         /* Add these vlan to the vid table */
3204         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3205                 vpath = &vdev->vpaths[vp_id];
3206                 if (!vpath->is_open)
3207                         continue;
3208                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3209         }
3210 }
3211
3212 /**
3213  * vxge_vlan_rx_add_vid
3214  * @dev: net device pointer.
3215  * @vid: vid
3216  *
3217  * Remove the vlan id from the device's vlan id table
3218  */
3219 static void
3220 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3221 {
3222         struct vxgedev *vdev;
3223         struct vxge_vpath *vpath;
3224         int vp_id;
3225
3226         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3227
3228         vdev = (struct vxgedev *)netdev_priv(dev);
3229
3230         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3231
3232         /* Delete this vlan from the vid table */
3233         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3234                 vpath = &vdev->vpaths[vp_id];
3235                 if (!vpath->is_open)
3236                         continue;
3237                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3238         }
3239         vxge_debug_entryexit(VXGE_TRACE,
3240                 "%s:%d  Exiting...", __func__, __LINE__);
3241 }
3242
3243 static const struct net_device_ops vxge_netdev_ops = {
3244         .ndo_open               = vxge_open,
3245         .ndo_stop               = vxge_close,
3246         .ndo_get_stats64        = vxge_get_stats64,
3247         .ndo_start_xmit         = vxge_xmit,
3248         .ndo_validate_addr      = eth_validate_addr,
3249         .ndo_set_multicast_list = vxge_set_multicast,
3250
3251         .ndo_do_ioctl           = vxge_ioctl,
3252
3253         .ndo_set_mac_address    = vxge_set_mac_addr,
3254         .ndo_change_mtu         = vxge_change_mtu,
3255         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3256         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3257         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3258
3259         .ndo_tx_timeout         = vxge_tx_watchdog,
3260 #ifdef CONFIG_NET_POLL_CONTROLLER
3261         .ndo_poll_controller    = vxge_netpoll,
3262 #endif
3263 };
3264
3265 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3266                                           struct vxge_config *config,
3267                                           int high_dma, int no_of_vpath,
3268                                           struct vxgedev **vdev_out)
3269 {
3270         struct net_device *ndev;
3271         enum vxge_hw_status status = VXGE_HW_OK;
3272         struct vxgedev *vdev;
3273         int ret = 0, no_of_queue = 1;
3274         u64 stat;
3275
3276         *vdev_out = NULL;
3277         if (config->tx_steering_type)
3278                 no_of_queue = no_of_vpath;
3279
3280         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3281                         no_of_queue);
3282         if (ndev == NULL) {
3283                 vxge_debug_init(
3284                         vxge_hw_device_trace_level_get(hldev),
3285                 "%s : device allocation failed", __func__);
3286                 ret = -ENODEV;
3287                 goto _out0;
3288         }
3289
3290         vxge_debug_entryexit(
3291                 vxge_hw_device_trace_level_get(hldev),
3292                 "%s: %s:%d  Entering...",
3293                 ndev->name, __func__, __LINE__);
3294
3295         vdev = netdev_priv(ndev);
3296         memset(vdev, 0, sizeof(struct vxgedev));
3297
3298         vdev->ndev = ndev;
3299         vdev->devh = hldev;
3300         vdev->pdev = hldev->pdev;
3301         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3302         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3303         vdev->rx_hwts = 0;
3304
3305         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3306
3307         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3308                                 NETIF_F_HW_VLAN_FILTER;
3309         /*  Driver entry points */
3310         ndev->irq = vdev->pdev->irq;
3311         ndev->base_addr = (unsigned long) hldev->bar0;
3312
3313         ndev->netdev_ops = &vxge_netdev_ops;
3314
3315         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3316
3317         vxge_initialize_ethtool_ops(ndev);
3318
3319         if (vdev->config.rth_steering != NO_STEERING) {
3320                 ndev->features |= NETIF_F_RXHASH;
3321                 hldev->config.rth_en = VXGE_HW_RTH_ENABLE;
3322         }
3323
3324         /* Allocate memory for vpath */
3325         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3326                                 no_of_vpath, GFP_KERNEL);
3327         if (!vdev->vpaths) {
3328                 vxge_debug_init(VXGE_ERR,
3329                         "%s: vpath memory allocation failed",
3330                         vdev->ndev->name);
3331                 ret = -ENODEV;
3332                 goto _out1;
3333         }
3334
3335         ndev->features |= NETIF_F_SG;
3336
3337         ndev->features |= NETIF_F_HW_CSUM;
3338         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3339                 "%s : checksuming enabled", __func__);
3340
3341         if (high_dma) {
3342                 ndev->features |= NETIF_F_HIGHDMA;
3343                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3344                         "%s : using High DMA", __func__);
3345         }
3346
3347         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3348
3349         if (vdev->config.gro_enable)
3350                 ndev->features |= NETIF_F_GRO;
3351
3352         if (register_netdev(ndev)) {
3353                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3354                         "%s: %s : device registration failed!",
3355                         ndev->name, __func__);
3356                 ret = -ENODEV;
3357                 goto _out2;
3358         }
3359
3360         /*  Set the factory defined MAC address initially */
3361         ndev->addr_len = ETH_ALEN;
3362
3363         /* Make Link state as off at this point, when the Link change
3364          * interrupt comes the state will be automatically changed to
3365          * the right state.
3366          */
3367         netif_carrier_off(ndev);
3368
3369         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3370                 "%s: Ethernet device registered",
3371                 ndev->name);
3372
3373         hldev->ndev = ndev;
3374         *vdev_out = vdev;
3375
3376         /* Resetting the Device stats */
3377         status = vxge_hw_mrpcim_stats_access(
3378                                 hldev,
3379                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3380                                 0,
3381                                 0,
3382                                 &stat);
3383
3384         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3385                 vxge_debug_init(
3386                         vxge_hw_device_trace_level_get(hldev),
3387                         "%s: device stats clear returns"
3388                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3389
3390         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3391                 "%s: %s:%d  Exiting...",
3392                 ndev->name, __func__, __LINE__);
3393
3394         return ret;
3395 _out2:
3396         kfree(vdev->vpaths);
3397 _out1:
3398         free_netdev(ndev);
3399 _out0:
3400         return ret;
3401 }
3402
3403 /*
3404  * vxge_device_unregister
3405  *
3406  * This function will unregister and free network device
3407  */
3408 static void
3409 vxge_device_unregister(struct __vxge_hw_device *hldev)
3410 {
3411         struct vxgedev *vdev;
3412         struct net_device *dev;
3413         char buf[IFNAMSIZ];
3414 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3415         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3416         u32 level_trace;
3417 #endif
3418
3419         dev = hldev->ndev;
3420         vdev = netdev_priv(dev);
3421 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3422         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3423         level_trace = vdev->level_trace;
3424 #endif
3425         vxge_debug_entryexit(level_trace,
3426                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3427
3428         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3429
3430         /* in 2.6 will call stop() if device is up */
3431         unregister_netdev(dev);
3432
3433         flush_scheduled_work();
3434
3435         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3436         vxge_debug_entryexit(level_trace,
3437                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3438 }
3439
3440 /*
3441  * vxge_callback_crit_err
3442  *
3443  * This function is called by the alarm handler in interrupt context.
3444  * Driver must analyze it based on the event type.
3445  */
3446 static void
3447 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3448                         enum vxge_hw_event type, u64 vp_id)
3449 {
3450         struct net_device *dev = hldev->ndev;
3451         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3452         struct vxge_vpath *vpath = NULL;
3453         int vpath_idx;
3454
3455         vxge_debug_entryexit(vdev->level_trace,
3456                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3457
3458         /* Note: This event type should be used for device wide
3459          * indications only - Serious errors, Slot freeze and critical errors
3460          */
3461         vdev->cric_err_event = type;
3462
3463         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3464                 vpath = &vdev->vpaths[vpath_idx];
3465                 if (vpath->device_id == vp_id)
3466                         break;
3467         }
3468
3469         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3470                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3471                         vxge_debug_init(VXGE_ERR,
3472                                 "%s: Slot is frozen", vdev->ndev->name);
3473                 } else if (type == VXGE_HW_EVENT_SERR) {
3474                         vxge_debug_init(VXGE_ERR,
3475                                 "%s: Encountered Serious Error",
3476                                 vdev->ndev->name);
3477                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3478                         vxge_debug_init(VXGE_ERR,
3479                                 "%s: Encountered Critical Error",
3480                                 vdev->ndev->name);
3481         }
3482
3483         if ((type == VXGE_HW_EVENT_SERR) ||
3484                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3485                 if (unlikely(vdev->exec_mode))
3486                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3487         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3488                 vxge_hw_device_mask_all(hldev);
3489                 if (unlikely(vdev->exec_mode))
3490                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3491         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3492                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3493
3494                 if (unlikely(vdev->exec_mode))
3495                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3496                 else {
3497                         /* check if this vpath is already set for reset */
3498                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3499
3500                                 /* disable interrupts for this vpath */
3501                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3502
3503                                 /* stop the queue for this vpath */
3504                                 netif_tx_stop_queue(vpath->fifo.txq);
3505                         }
3506                 }
3507         }
3508
3509         vxge_debug_entryexit(vdev->level_trace,
3510                 "%s: %s:%d  Exiting...",
3511                 vdev->ndev->name, __func__, __LINE__);
3512 }
3513
3514 static void verify_bandwidth(void)
3515 {
3516         int i, band_width, total = 0, equal_priority = 0;
3517
3518         /* 1. If user enters 0 for some fifo, give equal priority to all */
3519         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3520                 if (bw_percentage[i] == 0) {
3521                         equal_priority = 1;
3522                         break;
3523                 }
3524         }
3525
3526         if (!equal_priority) {
3527                 /* 2. If sum exceeds 100, give equal priority to all */
3528                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3529                         if (bw_percentage[i] == 0xFF)
3530                                 break;
3531
3532                         total += bw_percentage[i];
3533                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3534                                 equal_priority = 1;
3535                                 break;
3536                         }
3537                 }
3538         }
3539
3540         if (!equal_priority) {
3541                 /* Is all the bandwidth consumed? */
3542                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3543                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3544                                 /* Split rest of bw equally among next VPs*/
3545                                 band_width =
3546                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3547                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3548                                 if (band_width < 2) /* min of 2% */
3549                                         equal_priority = 1;
3550                                 else {
3551                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3552                                                 i++)
3553                                                 bw_percentage[i] =
3554                                                         band_width;
3555                                 }
3556                         }
3557                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3558                         equal_priority = 1;
3559         }
3560
3561         if (equal_priority) {
3562                 vxge_debug_init(VXGE_ERR,
3563                         "%s: Assigning equal bandwidth to all the vpaths",
3564                         VXGE_DRIVER_NAME);
3565                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3566                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3567                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3568                         bw_percentage[i] = bw_percentage[0];
3569         }
3570 }
3571
3572 /*
3573  * Vpath configuration
3574  */
3575 static int __devinit vxge_config_vpaths(
3576                         struct vxge_hw_device_config *device_config,
3577                         u64 vpath_mask, struct vxge_config *config_param)
3578 {
3579         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3580         u32 txdl_size, txdl_per_memblock;
3581
3582         temp = driver_config->vpath_per_dev;
3583         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3584                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3585                 /* No more CPU. Return vpath number as zero.*/
3586                 if (driver_config->g_no_cpus == -1)
3587                         return 0;
3588
3589                 if (!driver_config->g_no_cpus)
3590                         driver_config->g_no_cpus = num_online_cpus();
3591
3592                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3593                 if (!driver_config->vpath_per_dev)
3594                         driver_config->vpath_per_dev = 1;
3595
3596                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3597                         if (!vxge_bVALn(vpath_mask, i, 1))
3598                                 continue;
3599                         else
3600                                 default_no_vpath++;
3601                 if (default_no_vpath < driver_config->vpath_per_dev)
3602                         driver_config->vpath_per_dev = default_no_vpath;
3603
3604                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3605                                 (driver_config->vpath_per_dev * 2);
3606                 if (driver_config->g_no_cpus <= 0)
3607                         driver_config->g_no_cpus = -1;
3608         }
3609
3610         if (driver_config->vpath_per_dev == 1) {
3611                 vxge_debug_ll_config(VXGE_TRACE,
3612                         "%s: Disable tx and rx steering, "
3613                         "as single vpath is configured", VXGE_DRIVER_NAME);
3614                 config_param->rth_steering = NO_STEERING;
3615                 config_param->tx_steering_type = NO_STEERING;
3616                 device_config->rth_en = 0;
3617         }
3618
3619         /* configure bandwidth */
3620         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3621                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3622
3623         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3624                 device_config->vp_config[i].vp_id = i;
3625                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3626                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3627                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3628                                 vxge_debug_ll_config(VXGE_TRACE,
3629                                         "%s: vpath: %d is not available",
3630                                         VXGE_DRIVER_NAME, i);
3631                                 continue;
3632                         } else {
3633                                 vxge_debug_ll_config(VXGE_TRACE,
3634                                         "%s: vpath: %d available",
3635                                         VXGE_DRIVER_NAME, i);
3636                                 no_of_vpaths++;
3637                         }
3638                 } else {
3639                         vxge_debug_ll_config(VXGE_TRACE,
3640                                 "%s: vpath: %d is not configured, "
3641                                 "max_config_vpath exceeded",
3642                                 VXGE_DRIVER_NAME, i);
3643                         break;
3644                 }
3645
3646                 /* Configure Tx fifo's */
3647                 device_config->vp_config[i].fifo.enable =
3648                                                 VXGE_HW_FIFO_ENABLE;
3649                 device_config->vp_config[i].fifo.max_frags =
3650                                 MAX_SKB_FRAGS + 1;
3651                 device_config->vp_config[i].fifo.memblock_size =
3652                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3653
3654                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3655                                 sizeof(struct vxge_hw_fifo_txd);
3656                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3657
3658                 device_config->vp_config[i].fifo.fifo_blocks =
3659                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3660
3661                 device_config->vp_config[i].fifo.intr =
3662                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3663
3664                 /* Configure tti properties */
3665                 device_config->vp_config[i].tti.intr_enable =
3666                                         VXGE_HW_TIM_INTR_ENABLE;
3667
3668                 device_config->vp_config[i].tti.btimer_val =
3669                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3670
3671                 device_config->vp_config[i].tti.timer_ac_en =
3672                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3673
3674                 /* For msi-x with napi (each vector
3675                 has a handler of its own) -
3676                 Set CI to OFF for all vpaths */
3677                 device_config->vp_config[i].tti.timer_ci_en =
3678                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3679
3680                 device_config->vp_config[i].tti.timer_ri_en =
3681                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3682
3683                 device_config->vp_config[i].tti.util_sel =
3684                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3685
3686                 device_config->vp_config[i].tti.ltimer_val =
3687                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3688
3689                 device_config->vp_config[i].tti.rtimer_val =
3690                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3691
3692                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3693                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3694                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3695                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3696                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3697                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3698                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3699
3700                 /* Configure Rx rings */
3701                 device_config->vp_config[i].ring.enable  =
3702                                                 VXGE_HW_RING_ENABLE;
3703
3704                 device_config->vp_config[i].ring.ring_blocks  =
3705                                                 VXGE_HW_DEF_RING_BLOCKS;
3706                 device_config->vp_config[i].ring.buffer_mode =
3707                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3708                 device_config->vp_config[i].ring.rxds_limit  =
3709                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3710                 device_config->vp_config[i].ring.scatter_mode =
3711                                         VXGE_HW_RING_SCATTER_MODE_A;
3712
3713                 /* Configure rti properties */
3714                 device_config->vp_config[i].rti.intr_enable =
3715                                         VXGE_HW_TIM_INTR_ENABLE;
3716
3717                 device_config->vp_config[i].rti.btimer_val =
3718                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3719
3720                 device_config->vp_config[i].rti.timer_ac_en =
3721                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3722
3723                 device_config->vp_config[i].rti.timer_ci_en =
3724                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3725
3726                 device_config->vp_config[i].rti.timer_ri_en =
3727                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3728
3729                 device_config->vp_config[i].rti.util_sel =
3730                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3731
3732                 device_config->vp_config[i].rti.urange_a =
3733                                                 RTI_RX_URANGE_A;
3734                 device_config->vp_config[i].rti.urange_b =
3735                                                 RTI_RX_URANGE_B;
3736                 device_config->vp_config[i].rti.urange_c =
3737                                                 RTI_RX_URANGE_C;
3738                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3739                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3740                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3741                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3742
3743                 device_config->vp_config[i].rti.rtimer_val =
3744                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3745
3746                 device_config->vp_config[i].rti.ltimer_val =
3747                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3748
3749                 device_config->vp_config[i].rpa_strip_vlan_tag =
3750                         vlan_tag_strip;
3751         }
3752
3753         driver_config->vpath_per_dev = temp;
3754         return no_of_vpaths;
3755 }
3756
3757 /* initialize device configuratrions */
3758 static void __devinit vxge_device_config_init(
3759                                 struct vxge_hw_device_config *device_config,
3760                                 int *intr_type)
3761 {
3762         /* Used for CQRQ/SRQ. */
3763         device_config->dma_blockpool_initial =
3764                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3765
3766         device_config->dma_blockpool_max =
3767                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3768
3769         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3770                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3771
3772 #ifndef CONFIG_PCI_MSI
3773         vxge_debug_init(VXGE_ERR,
3774                 "%s: This Kernel does not support "
3775                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3776         *intr_type = INTA;
3777 #endif
3778
3779         /* Configure whether MSI-X or IRQL. */
3780         switch (*intr_type) {
3781         case INTA:
3782                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3783                 break;
3784
3785         case MSI_X:
3786                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3787                 break;
3788         }
3789         /* Timer period between device poll */
3790         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3791
3792         /* Configure mac based steering. */
3793         device_config->rts_mac_en = addr_learn_en;
3794
3795         /* Configure Vpaths */
3796         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3797
3798         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3799                         __func__);
3800         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3801                         device_config->dma_blockpool_initial);
3802         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3803                         device_config->dma_blockpool_max);
3804         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3805                         device_config->intr_mode);
3806         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3807                         device_config->device_poll_millis);
3808         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3809                         device_config->rts_mac_en);
3810         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3811                         device_config->rth_en);
3812         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3813                         device_config->rth_it_type);
3814 }
3815
3816 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3817 {
3818         int i;
3819
3820         vxge_debug_init(VXGE_TRACE,
3821                 "%s: %d Vpath(s) opened",
3822                 vdev->ndev->name, vdev->no_of_vpath);
3823
3824         switch (vdev->config.intr_type) {
3825         case INTA:
3826                 vxge_debug_init(VXGE_TRACE,
3827                         "%s: Interrupt type INTA", vdev->ndev->name);
3828                 break;
3829
3830         case MSI_X:
3831                 vxge_debug_init(VXGE_TRACE,
3832                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3833                 break;
3834         }
3835
3836         if (vdev->config.rth_steering) {
3837                 vxge_debug_init(VXGE_TRACE,
3838                         "%s: RTH steering enabled for TCP_IPV4",
3839                         vdev->ndev->name);
3840         } else {
3841                 vxge_debug_init(VXGE_TRACE,
3842                         "%s: RTH steering disabled", vdev->ndev->name);
3843         }
3844
3845         switch (vdev->config.tx_steering_type) {
3846         case NO_STEERING:
3847                 vxge_debug_init(VXGE_TRACE,
3848                         "%s: Tx steering disabled", vdev->ndev->name);
3849                 break;
3850         case TX_PRIORITY_STEERING:
3851                 vxge_debug_init(VXGE_TRACE,
3852                         "%s: Unsupported tx steering option",
3853                         vdev->ndev->name);
3854                 vxge_debug_init(VXGE_TRACE,
3855                         "%s: Tx steering disabled", vdev->ndev->name);
3856                 vdev->config.tx_steering_type = 0;
3857                 break;
3858         case TX_VLAN_STEERING:
3859                 vxge_debug_init(VXGE_TRACE,
3860                         "%s: Unsupported tx steering option",
3861                         vdev->ndev->name);
3862                 vxge_debug_init(VXGE_TRACE,
3863                         "%s: Tx steering disabled", vdev->ndev->name);
3864                 vdev->config.tx_steering_type = 0;
3865                 break;
3866         case TX_MULTIQ_STEERING:
3867                 vxge_debug_init(VXGE_TRACE,
3868                         "%s: Tx multiqueue steering enabled",
3869                         vdev->ndev->name);
3870                 break;
3871         case TX_PORT_STEERING:
3872                 vxge_debug_init(VXGE_TRACE,
3873                         "%s: Tx port steering enabled",
3874                         vdev->ndev->name);
3875                 break;
3876         default:
3877                 vxge_debug_init(VXGE_ERR,
3878                         "%s: Unsupported tx steering type",
3879                         vdev->ndev->name);
3880                 vxge_debug_init(VXGE_TRACE,
3881                         "%s: Tx steering disabled", vdev->ndev->name);
3882                 vdev->config.tx_steering_type = 0;
3883         }
3884
3885         if (vdev->config.gro_enable) {
3886                 vxge_debug_init(VXGE_ERR,
3887                         "%s: Generic receive offload enabled",
3888                         vdev->ndev->name);
3889         } else
3890                 vxge_debug_init(VXGE_TRACE,
3891                         "%s: Generic receive offload disabled",
3892                         vdev->ndev->name);
3893
3894         if (vdev->config.addr_learn_en)
3895                 vxge_debug_init(VXGE_TRACE,
3896                         "%s: MAC Address learning enabled", vdev->ndev->name);
3897
3898         vxge_debug_init(VXGE_TRACE,
3899                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3900
3901         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3902                 if (!vxge_bVALn(vpath_mask, i, 1))
3903                         continue;
3904                 vxge_debug_ll_config(VXGE_TRACE,
3905                         "%s: MTU size - %d", vdev->ndev->name,
3906                         ((struct __vxge_hw_device  *)(vdev->devh))->
3907                                 config.vp_config[i].mtu);
3908                 vxge_debug_init(VXGE_TRACE,
3909                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3910                         ((struct __vxge_hw_device  *)(vdev->devh))->
3911                                 config.vp_config[i].rpa_strip_vlan_tag
3912                         ? "Enabled" : "Disabled");
3913                 vxge_debug_init(VXGE_TRACE,
3914                         "%s: Ring blocks : %d", vdev->ndev->name,
3915                         ((struct __vxge_hw_device  *)(vdev->devh))->
3916                                 config.vp_config[i].ring.ring_blocks);
3917                 vxge_debug_init(VXGE_TRACE,
3918                         "%s: Fifo blocks : %d", vdev->ndev->name,
3919                         ((struct __vxge_hw_device  *)(vdev->devh))->
3920                                 config.vp_config[i].fifo.fifo_blocks);
3921                 vxge_debug_ll_config(VXGE_TRACE,
3922                         "%s: Max frags : %d", vdev->ndev->name,
3923                         ((struct __vxge_hw_device  *)(vdev->devh))->
3924                                 config.vp_config[i].fifo.max_frags);
3925                 break;
3926         }
3927 }
3928
3929 #ifdef CONFIG_PM
3930 /**
3931  * vxge_pm_suspend - vxge power management suspend entry point
3932  *
3933  */
3934 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3935 {
3936         return -ENOSYS;
3937 }
3938 /**
3939  * vxge_pm_resume - vxge power management resume entry point
3940  *
3941  */
3942 static int vxge_pm_resume(struct pci_dev *pdev)
3943 {
3944         return -ENOSYS;
3945 }
3946
3947 #endif
3948
3949 /**
3950  * vxge_io_error_detected - called when PCI error is detected
3951  * @pdev: Pointer to PCI device
3952  * @state: The current pci connection state
3953  *
3954  * This function is called after a PCI bus error affecting
3955  * this device has been detected.
3956  */
3957 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3958                                                 pci_channel_state_t state)
3959 {
3960         struct __vxge_hw_device  *hldev =
3961                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3962         struct net_device *netdev = hldev->ndev;
3963
3964         netif_device_detach(netdev);
3965
3966         if (state == pci_channel_io_perm_failure)
3967                 return PCI_ERS_RESULT_DISCONNECT;
3968
3969         if (netif_running(netdev)) {
3970                 /* Bring down the card, while avoiding PCI I/O */
3971                 do_vxge_close(netdev, 0);
3972         }
3973
3974         pci_disable_device(pdev);
3975
3976         return PCI_ERS_RESULT_NEED_RESET;
3977 }
3978
3979 /**
3980  * vxge_io_slot_reset - called after the pci bus has been reset.
3981  * @pdev: Pointer to PCI device
3982  *
3983  * Restart the card from scratch, as if from a cold-boot.
3984  * At this point, the card has exprienced a hard reset,
3985  * followed by fixups by BIOS, and has its config space
3986  * set up identically to what it was at cold boot.
3987  */
3988 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3989 {
3990         struct __vxge_hw_device  *hldev =
3991                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3992         struct net_device *netdev = hldev->ndev;
3993
3994         struct vxgedev *vdev = netdev_priv(netdev);
3995
3996         if (pci_enable_device(pdev)) {
3997                 netdev_err(netdev, "Cannot re-enable device after reset\n");
3998                 return PCI_ERS_RESULT_DISCONNECT;
3999         }
4000
4001         pci_set_master(pdev);
4002         vxge_reset(vdev);
4003
4004         return PCI_ERS_RESULT_RECOVERED;
4005 }
4006
4007 /**
4008  * vxge_io_resume - called when traffic can start flowing again.
4009  * @pdev: Pointer to PCI device
4010  *
4011  * This callback is called when the error recovery driver tells
4012  * us that its OK to resume normal operation.
4013  */
4014 static void vxge_io_resume(struct pci_dev *pdev)
4015 {
4016         struct __vxge_hw_device  *hldev =
4017                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4018         struct net_device *netdev = hldev->ndev;
4019
4020         if (netif_running(netdev)) {
4021                 if (vxge_open(netdev)) {
4022                         netdev_err(netdev,
4023                                    "Can't bring device back up after reset\n");
4024                         return;
4025                 }
4026         }
4027
4028         netif_device_attach(netdev);
4029 }
4030
4031 static inline u32 vxge_get_num_vfs(u64 function_mode)
4032 {
4033         u32 num_functions = 0;
4034
4035         switch (function_mode) {
4036         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4037         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4038                 num_functions = 8;
4039                 break;
4040         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4041                 num_functions = 1;
4042                 break;
4043         case VXGE_HW_FUNCTION_MODE_SRIOV:
4044         case VXGE_HW_FUNCTION_MODE_MRIOV:
4045         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4046                 num_functions = 17;
4047                 break;
4048         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4049                 num_functions = 4;
4050                 break;
4051         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4052                 num_functions = 2;
4053                 break;
4054         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4055                 num_functions = 8; /* TODO */
4056                 break;
4057         }
4058         return num_functions;
4059 }
4060
4061 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4062 {
4063         struct __vxge_hw_device *hldev = vdev->devh;
4064         u32 maj, min, bld, cmaj, cmin, cbld;
4065         enum vxge_hw_status status;
4066         const struct firmware *fw;
4067         int ret;
4068
4069         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4070         if (ret) {
4071                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4072                                 VXGE_DRIVER_NAME, fw_name);
4073                 goto out;
4074         }
4075
4076         /* Load the new firmware onto the adapter */
4077         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4078         if (status != VXGE_HW_OK) {
4079                 vxge_debug_init(VXGE_ERR,
4080                                 "%s: FW image download to adapter failed '%s'.",
4081                                 VXGE_DRIVER_NAME, fw_name);
4082                 ret = -EIO;
4083                 goto out;
4084         }
4085
4086         /* Read the version of the new firmware */
4087         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4088         if (status != VXGE_HW_OK) {
4089                 vxge_debug_init(VXGE_ERR,
4090                                 "%s: Upgrade read version failed '%s'.",
4091                                 VXGE_DRIVER_NAME, fw_name);
4092                 ret = -EIO;
4093                 goto out;
4094         }
4095
4096         cmaj = vdev->config.device_hw_info.fw_version.major;
4097         cmin = vdev->config.device_hw_info.fw_version.minor;
4098         cbld = vdev->config.device_hw_info.fw_version.build;
4099         /* It's possible the version in /lib/firmware is not the latest version.
4100          * If so, we could get into a loop of trying to upgrade to the latest
4101          * and flashing the older version.
4102          */
4103         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4104             !override) {
4105                 ret = -EINVAL;
4106                 goto out;
4107         }
4108
4109         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4110                maj, min, bld);
4111
4112         /* Flash the adapter with the new firmware */
4113         status = vxge_hw_flash_fw(hldev);
4114         if (status != VXGE_HW_OK) {
4115                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4116                                 VXGE_DRIVER_NAME, fw_name);
4117                 ret = -EIO;
4118                 goto out;
4119         }
4120
4121         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4122                "hard reset before using, thus requiring a system reboot or a "
4123                "hotplug event.\n");
4124
4125 out:
4126         return ret;
4127 }
4128
4129 static int vxge_probe_fw_update(struct vxgedev *vdev)
4130 {
4131         u32 maj, min, bld;
4132         int ret, gpxe = 0;
4133         char *fw_name;
4134
4135         maj = vdev->config.device_hw_info.fw_version.major;
4136         min = vdev->config.device_hw_info.fw_version.minor;
4137         bld = vdev->config.device_hw_info.fw_version.build;
4138
4139         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4140                 return 0;
4141
4142         /* Ignore the build number when determining if the current firmware is
4143          * "too new" to load the driver
4144          */
4145         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4146                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4147                                 "version, unable to load driver\n",
4148                                 VXGE_DRIVER_NAME);
4149                 return -EINVAL;
4150         }
4151
4152         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4153          * work with this driver.
4154          */
4155         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4156                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4157                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4158                 return -EINVAL;
4159         }
4160
4161         /* If file not specified, determine gPXE or not */
4162         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4163                 int i;
4164                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4165                         if (vdev->devh->eprom_versions[i]) {
4166                                 gpxe = 1;
4167                                 break;
4168                         }
4169         }
4170         if (gpxe)
4171                 fw_name = "vxge/X3fw-pxe.ncf";
4172         else
4173                 fw_name = "vxge/X3fw.ncf";
4174
4175         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4176         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4177          * probe, so ignore them
4178          */
4179         if (ret != -EINVAL && ret != -ENOENT)
4180                 return -EIO;
4181         else
4182                 ret = 0;
4183
4184         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4185             VXGE_FW_VER(maj, min, 0)) {
4186                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4187                                 " be used with this driver.\n"
4188                                 "Please get the latest version from "
4189                                 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4190                                 VXGE_DRIVER_NAME, maj, min, bld);
4191                 return -EINVAL;
4192         }
4193
4194         return ret;
4195 }
4196
4197 /**
4198  * vxge_probe
4199  * @pdev : structure containing the PCI related information of the device.
4200  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4201  * Description:
4202  * This function is called when a new PCI device gets detected and initializes
4203  * it.
4204  * Return value:
4205  * returns 0 on success and negative on failure.
4206  *
4207  */
4208 static int __devinit
4209 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4210 {
4211         struct __vxge_hw_device  *hldev;
4212         enum vxge_hw_status status;
4213         int ret;
4214         int high_dma = 0;
4215         u64 vpath_mask = 0;
4216         struct vxgedev *vdev;
4217         struct vxge_config *ll_config = NULL;
4218         struct vxge_hw_device_config *device_config = NULL;
4219         struct vxge_hw_device_attr attr;
4220         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4221         u8 *macaddr;
4222         struct vxge_mac_addrs *entry;
4223         static int bus = -1, device = -1;
4224         u32 host_type;
4225         u8 new_device = 0;
4226         enum vxge_hw_status is_privileged;
4227         u32 function_mode;
4228         u32 num_vfs = 0;
4229
4230         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4231         attr.pdev = pdev;
4232
4233         /* In SRIOV-17 mode, functions of the same adapter
4234          * can be deployed on different buses */
4235         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
4236                 (device != PCI_SLOT(pdev->devfn))))
4237                 new_device = 1;
4238
4239         bus = pdev->bus->number;
4240         device = PCI_SLOT(pdev->devfn);
4241
4242         if (new_device) {
4243                 if (driver_config->config_dev_cnt &&
4244                    (driver_config->config_dev_cnt !=
4245                         driver_config->total_dev_cnt))
4246                         vxge_debug_init(VXGE_ERR,
4247                                 "%s: Configured %d of %d devices",
4248                                 VXGE_DRIVER_NAME,
4249                                 driver_config->config_dev_cnt,
4250                                 driver_config->total_dev_cnt);
4251                 driver_config->config_dev_cnt = 0;
4252                 driver_config->total_dev_cnt = 0;
4253         }
4254         /* Now making the CPU based no of vpath calculation
4255          * applicable for individual functions as well.
4256          */
4257         driver_config->g_no_cpus = 0;
4258         driver_config->vpath_per_dev = max_config_vpath;
4259
4260         driver_config->total_dev_cnt++;
4261         if (++driver_config->config_dev_cnt > max_config_dev) {
4262                 ret = 0;
4263                 goto _exit0;
4264         }
4265
4266         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4267                 GFP_KERNEL);
4268         if (!device_config) {
4269                 ret = -ENOMEM;
4270                 vxge_debug_init(VXGE_ERR,
4271                         "device_config : malloc failed %s %d",
4272                         __FILE__, __LINE__);
4273                 goto _exit0;
4274         }
4275
4276         ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
4277         if (!ll_config) {
4278                 ret = -ENOMEM;
4279                 vxge_debug_init(VXGE_ERR,
4280                         "ll_config : malloc failed %s %d",
4281                         __FILE__, __LINE__);
4282                 goto _exit0;
4283         }
4284         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4285         ll_config->intr_type = MSI_X;
4286         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4287         ll_config->rth_steering = RTH_STEERING;
4288
4289         /* get the default configuration parameters */
4290         vxge_hw_device_config_default_get(device_config);
4291
4292         /* initialize configuration parameters */
4293         vxge_device_config_init(device_config, &ll_config->intr_type);
4294
4295         ret = pci_enable_device(pdev);
4296         if (ret) {
4297                 vxge_debug_init(VXGE_ERR,
4298                         "%s : can not enable PCI device", __func__);
4299                 goto _exit0;
4300         }
4301
4302         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4303                 vxge_debug_ll_config(VXGE_TRACE,
4304                         "%s : using 64bit DMA", __func__);
4305
4306                 high_dma = 1;
4307
4308                 if (pci_set_consistent_dma_mask(pdev,
4309                                                 DMA_BIT_MASK(64))) {
4310                         vxge_debug_init(VXGE_ERR,
4311                                 "%s : unable to obtain 64bit DMA for "
4312                                 "consistent allocations", __func__);
4313                         ret = -ENOMEM;
4314                         goto _exit1;
4315                 }
4316         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4317                 vxge_debug_ll_config(VXGE_TRACE,
4318                         "%s : using 32bit DMA", __func__);
4319         } else {
4320                 ret = -ENOMEM;
4321                 goto _exit1;
4322         }
4323
4324         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4325                 vxge_debug_init(VXGE_ERR,
4326                         "%s : request regions failed", __func__);
4327                 ret = -ENODEV;
4328                 goto _exit1;
4329         }
4330
4331         pci_set_master(pdev);
4332
4333         attr.bar0 = pci_ioremap_bar(pdev, 0);
4334         if (!attr.bar0) {
4335                 vxge_debug_init(VXGE_ERR,
4336                         "%s : cannot remap io memory bar0", __func__);
4337                 ret = -ENODEV;
4338                 goto _exit2;
4339         }
4340         vxge_debug_ll_config(VXGE_TRACE,
4341                 "pci ioremap bar0: %p:0x%llx",
4342                 attr.bar0,
4343                 (unsigned long long)pci_resource_start(pdev, 0));
4344
4345         status = vxge_hw_device_hw_info_get(attr.bar0,
4346                         &ll_config->device_hw_info);
4347         if (status != VXGE_HW_OK) {
4348                 vxge_debug_init(VXGE_ERR,
4349                         "%s: Reading of hardware info failed."
4350                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4351                 ret = -EINVAL;
4352                 goto _exit3;
4353         }
4354
4355         vpath_mask = ll_config->device_hw_info.vpath_mask;
4356         if (vpath_mask == 0) {
4357                 vxge_debug_ll_config(VXGE_TRACE,
4358                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4359                 ret = -EINVAL;
4360                 goto _exit3;
4361         }
4362
4363         vxge_debug_ll_config(VXGE_TRACE,
4364                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4365                 (unsigned long long)vpath_mask);
4366
4367         function_mode = ll_config->device_hw_info.function_mode;
4368         host_type = ll_config->device_hw_info.host_type;
4369         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4370                 ll_config->device_hw_info.func_id);
4371
4372         /* Check how many vpaths are available */
4373         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4374                 if (!((vpath_mask) & vxge_mBIT(i)))
4375                         continue;
4376                 max_vpath_supported++;
4377         }
4378
4379         if (new_device)
4380                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4381
4382         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4383         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4384                 (ll_config->intr_type != INTA) &&
4385                 (is_privileged == VXGE_HW_OK)) {
4386                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4387                         ? (max_config_dev - 1) : num_vfs);
4388                 if (ret)
4389                         vxge_debug_ll_config(VXGE_ERR,
4390                                 "Failed in enabling SRIOV mode: %d\n", ret);
4391         }
4392
4393         /*
4394          * Configure vpaths and get driver configured number of vpaths
4395          * which is less than or equal to the maximum vpaths per function.
4396          */
4397         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4398         if (!no_of_vpath) {
4399                 vxge_debug_ll_config(VXGE_ERR,
4400                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4401                 ret = 0;
4402                 goto _exit3;
4403         }
4404
4405         /* Setting driver callbacks */
4406         attr.uld_callbacks.link_up = vxge_callback_link_up;
4407         attr.uld_callbacks.link_down = vxge_callback_link_down;
4408         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4409
4410         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4411         if (status != VXGE_HW_OK) {
4412                 vxge_debug_init(VXGE_ERR,
4413                         "Failed to initialize device (%d)", status);
4414                         ret = -EINVAL;
4415                         goto _exit3;
4416         }
4417
4418         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4419                         ll_config->device_hw_info.fw_version.minor,
4420                         ll_config->device_hw_info.fw_version.build) >=
4421             VXGE_EPROM_FW_VER) {
4422                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4423
4424                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4425                 if (status != VXGE_HW_OK) {
4426                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4427                                         VXGE_DRIVER_NAME);
4428                         /* This is a non-fatal error, continue */
4429                 }
4430
4431                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4432                         hldev->eprom_versions[i] = img[i].version;
4433                         if (!img[i].is_valid)
4434                                 break;
4435                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4436                                         "%d.%d.%d.%d\n", VXGE_DRIVER_NAME, i,
4437                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4438                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4439                                         VXGE_EPROM_IMG_FIX(img[i].version),
4440                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4441                 }
4442         }
4443
4444         /* if FCS stripping is not disabled in MAC fail driver load */
4445         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4446         if (status != VXGE_HW_OK) {
4447                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4448                                 " failing driver load", VXGE_DRIVER_NAME);
4449                 ret = -EINVAL;
4450                 goto _exit4;
4451         }
4452
4453         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4454
4455         /* set private device info */
4456         pci_set_drvdata(pdev, hldev);
4457
4458         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4459         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4460         ll_config->addr_learn_en = addr_learn_en;
4461         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4462         ll_config->rth_hash_type_tcpipv4 = 1;
4463         ll_config->rth_hash_type_ipv4 = 0;
4464         ll_config->rth_hash_type_tcpipv6 = 0;
4465         ll_config->rth_hash_type_ipv6 = 0;
4466         ll_config->rth_hash_type_tcpipv6ex = 0;
4467         ll_config->rth_hash_type_ipv6ex = 0;
4468         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4469         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4470         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4471
4472         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4473                                    &vdev);
4474         if (ret) {
4475                 ret = -EINVAL;
4476                 goto _exit4;
4477         }
4478
4479         ret = vxge_probe_fw_update(vdev);
4480         if (ret)
4481                 goto _exit5;
4482
4483         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4484         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4485                 vxge_hw_device_trace_level_get(hldev));
4486
4487         /* set private HW device info */
4488         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4489         vdev->bar0 = attr.bar0;
4490         vdev->max_vpath_supported = max_vpath_supported;
4491         vdev->no_of_vpath = no_of_vpath;
4492
4493         /* Virtual Path count */
4494         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4495                 if (!vxge_bVALn(vpath_mask, i, 1))
4496                         continue;
4497                 if (j >= vdev->no_of_vpath)
4498                         break;
4499
4500                 vdev->vpaths[j].is_configured = 1;
4501                 vdev->vpaths[j].device_id = i;
4502                 vdev->vpaths[j].ring.driver_id = j;
4503                 vdev->vpaths[j].vdev = vdev;
4504                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4505                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4506                                 ll_config->device_hw_info.mac_addrs[i],
4507                                 ETH_ALEN);
4508
4509                 /* Initialize the mac address list header */
4510                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4511
4512                 vdev->vpaths[j].mac_addr_cnt = 0;
4513                 vdev->vpaths[j].mcast_addr_cnt = 0;
4514                 j++;
4515         }
4516         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4517         vdev->max_config_port = max_config_port;
4518
4519         vdev->vlan_tag_strip = vlan_tag_strip;
4520
4521         /* map the hashing selector table to the configured vpaths */
4522         for (i = 0; i < vdev->no_of_vpath; i++)
4523                 vdev->vpath_selector[i] = vpath_selector[i];
4524
4525         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4526
4527         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4528         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4529         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4530
4531         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4532                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4533
4534         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4535                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4536
4537         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4538                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4539
4540         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4541                 vdev->ndev->name, macaddr);
4542
4543         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4544                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4545
4546         vxge_debug_init(VXGE_TRACE,
4547                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4548                 ll_config->device_hw_info.fw_version.version,
4549                 ll_config->device_hw_info.fw_date.date);
4550
4551         if (new_device) {
4552                 switch (ll_config->device_hw_info.function_mode) {
4553                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4554                         vxge_debug_init(VXGE_TRACE,
4555                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4556                 break;
4557                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4558                         vxge_debug_init(VXGE_TRACE,
4559                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4560                 break;
4561                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4562                         vxge_debug_init(VXGE_TRACE,
4563                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4564                 break;
4565                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4566                         vxge_debug_init(VXGE_TRACE,
4567                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4568                 break;
4569                 }
4570         }
4571
4572         vxge_print_parm(vdev, vpath_mask);
4573
4574         /* Store the fw version for ethttool option */
4575         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4576         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4577         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4578
4579         /* Copy the station mac address to the list */
4580         for (i = 0; i < vdev->no_of_vpath; i++) {
4581                 entry = (struct vxge_mac_addrs *)
4582                                 kzalloc(sizeof(struct vxge_mac_addrs),
4583                                         GFP_KERNEL);
4584                 if (NULL == entry) {
4585                         vxge_debug_init(VXGE_ERR,
4586                                 "%s: mac_addr_list : memory allocation failed",
4587                                 vdev->ndev->name);
4588                         ret = -EPERM;
4589                         goto _exit6;
4590                 }
4591                 macaddr = (u8 *)&entry->macaddr;
4592                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4593                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4594                 vdev->vpaths[i].mac_addr_cnt = 1;
4595         }
4596
4597         kfree(device_config);
4598
4599         /*
4600          * INTA is shared in multi-function mode. This is unlike the INTA
4601          * implementation in MR mode, where each VH has its own INTA message.
4602          * - INTA is masked (disabled) as long as at least one function sets
4603          * its TITAN_MASK_ALL_INT.ALARM bit.
4604          * - INTA is unmasked (enabled) when all enabled functions have cleared
4605          * their own TITAN_MASK_ALL_INT.ALARM bit.
4606          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4607          * Though this driver leaves the top level interrupts unmasked while
4608          * leaving the required module interrupt bits masked on exit, there
4609          * could be a rougue driver around that does not follow this procedure
4610          * resulting in a failure to generate interrupts. The following code is
4611          * present to prevent such a failure.
4612          */
4613
4614         if (ll_config->device_hw_info.function_mode ==
4615                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4616                 if (vdev->config.intr_type == INTA)
4617                         vxge_hw_device_unmask_all(hldev);
4618
4619         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4620                 vdev->ndev->name, __func__, __LINE__);
4621
4622         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4623         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4624                 vxge_hw_device_trace_level_get(hldev));
4625
4626         kfree(ll_config);
4627         return 0;
4628
4629 _exit6:
4630         for (i = 0; i < vdev->no_of_vpath; i++)
4631                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4632 _exit5:
4633         vxge_device_unregister(hldev);
4634 _exit4:
4635         pci_disable_sriov(pdev);
4636         vxge_hw_device_terminate(hldev);
4637 _exit3:
4638         iounmap(attr.bar0);
4639 _exit2:
4640         pci_release_regions(pdev);
4641 _exit1:
4642         pci_disable_device(pdev);
4643 _exit0:
4644         kfree(ll_config);
4645         kfree(device_config);
4646         driver_config->config_dev_cnt--;
4647         pci_set_drvdata(pdev, NULL);
4648         return ret;
4649 }
4650
4651 /**
4652  * vxge_rem_nic - Free the PCI device
4653  * @pdev: structure containing the PCI related information of the device.
4654  * Description: This function is called by the Pci subsystem to release a
4655  * PCI device and free up all resource held up by the device.
4656  */
4657 static void __devexit
4658 vxge_remove(struct pci_dev *pdev)
4659 {
4660         struct __vxge_hw_device  *hldev;
4661         struct vxgedev *vdev = NULL;
4662         struct net_device *dev;
4663         int i = 0;
4664 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4665         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4666         u32 level_trace;
4667 #endif
4668
4669         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4670
4671         if (hldev == NULL)
4672                 return;
4673         dev = hldev->ndev;
4674         vdev = netdev_priv(dev);
4675
4676 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4677         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4678         level_trace = vdev->level_trace;
4679 #endif
4680         vxge_debug_entryexit(level_trace,
4681                 "%s:%d", __func__, __LINE__);
4682
4683         vxge_debug_init(level_trace,
4684                 "%s : removing PCI device...", __func__);
4685         vxge_device_unregister(hldev);
4686
4687         for (i = 0; i < vdev->no_of_vpath; i++) {
4688                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4689                 vdev->vpaths[i].mcast_addr_cnt = 0;
4690                 vdev->vpaths[i].mac_addr_cnt = 0;
4691         }
4692
4693         kfree(vdev->vpaths);
4694
4695         iounmap(vdev->bar0);
4696
4697         pci_disable_sriov(pdev);
4698
4699         /* we are safe to free it now */
4700         free_netdev(dev);
4701
4702         vxge_debug_init(level_trace,
4703                 "%s:%d  Device unregistered", __func__, __LINE__);
4704
4705         vxge_hw_device_terminate(hldev);
4706
4707         pci_disable_device(pdev);
4708         pci_release_regions(pdev);
4709         pci_set_drvdata(pdev, NULL);
4710         vxge_debug_entryexit(level_trace,
4711                 "%s:%d  Exiting...", __func__, __LINE__);
4712 }
4713
4714 static struct pci_error_handlers vxge_err_handler = {
4715         .error_detected = vxge_io_error_detected,
4716         .slot_reset = vxge_io_slot_reset,
4717         .resume = vxge_io_resume,
4718 };
4719
4720 static struct pci_driver vxge_driver = {
4721         .name = VXGE_DRIVER_NAME,
4722         .id_table = vxge_id_table,
4723         .probe = vxge_probe,
4724         .remove = __devexit_p(vxge_remove),
4725 #ifdef CONFIG_PM
4726         .suspend = vxge_pm_suspend,
4727         .resume = vxge_pm_resume,
4728 #endif
4729         .err_handler = &vxge_err_handler,
4730 };
4731
4732 static int __init
4733 vxge_starter(void)
4734 {
4735         int ret = 0;
4736
4737         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4738         pr_info("Driver version: %s\n", DRV_VERSION);
4739
4740         verify_bandwidth();
4741
4742         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4743         if (!driver_config)
4744                 return -ENOMEM;
4745
4746         ret = pci_register_driver(&vxge_driver);
4747
4748         if (driver_config->config_dev_cnt &&
4749            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4750                 vxge_debug_init(VXGE_ERR,
4751                         "%s: Configured %d of %d devices",
4752                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4753                         driver_config->total_dev_cnt);
4754
4755         if (ret)
4756                 kfree(driver_config);
4757
4758         return ret;
4759 }
4760
4761 static void __exit
4762 vxge_closer(void)
4763 {
4764         pci_unregister_driver(&vxge_driver);
4765         kfree(driver_config);
4766 }
4767 module_init(vxge_starter);
4768 module_exit(vxge_closer);