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