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 #include <linux/if_vlan.h>
  45 #include <linux/pci.h>
  46 #include <linux/slab.h>
  47 #include <linux/tcp.h>
  48 #include <net/ip.h>
  49 #include <linux/netdevice.h>
  50 #include <linux/etherdevice.h>
  51 #include "vxge-main.h"
  52 #include "vxge-reg.h"
  53
  54 MODULE_LICENSE("Dual BSD/GPL");
  55 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  56         "Virtualized Server Adapter");
  57
  58 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  59         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  60         PCI_ANY_ID},
  61         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  62         PCI_ANY_ID},
  63         {0}
  64 };
  65
  66 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  67
  68 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  69 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  70 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  71 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  72 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  73 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  74
  75 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  76                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  77 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  78         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  79 module_param_array(bw_percentage, uint, NULL, 0);
  80
  81 static struct vxge_drv_config *driver_config;
  82
  83 static inline int is_vxge_card_up(struct vxgedev *vdev)
  84 {
  85         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  86 }
  87
  88 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  89 {
  90         struct sk_buff **skb_ptr = NULL;
  91         struct sk_buff **temp;
  92 #define NR_SKB_COMPLETED 128
  93         struct sk_buff *completed[NR_SKB_COMPLETED];
  94         int more;
  95
  96         do {
  97                 more = 0;
  98                 skb_ptr = completed;
  99
 100                 if (__netif_tx_trylock(fifo->txq)) {
 101                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 102                                                 NR_SKB_COMPLETED, &more);
 103                         __netif_tx_unlock(fifo->txq);
 104                 }
 105
 106                 /* free SKBs */
 107                 for (temp = completed; temp != skb_ptr; temp++)
 108                         dev_kfree_skb_irq(*temp);
 109         } while (more);
 110 }
 111
 112 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 113 {
 114         int i;
 115
 116         /* Complete all transmits */
 117         for (i = 0; i < vdev->no_of_vpath; i++)
 118                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 122 {
 123         int i;
 124         struct vxge_ring *ring;
 125
 126         /* Complete all receives*/
 127         for (i = 0; i < vdev->no_of_vpath; i++) {
 128                 ring = &vdev->vpaths[i].ring;
 129                 vxge_hw_vpath_poll_rx(ring->handle);
 130         }
 131 }
 132
 133 /*
 134  * vxge_callback_link_up
 135  *
 136  * This function is called during interrupt context to notify link up state
 137  * change.
 138  */
 139 void
 140 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 141 {
 142         struct net_device *dev = hldev->ndev;
 143         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 144
 145         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 146                 vdev->ndev->name, __func__, __LINE__);
 147         printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
 148         vdev->stats.link_up++;
 149
 150         netif_carrier_on(vdev->ndev);
 151         netif_tx_wake_all_queues(vdev->ndev);
 152
 153         vxge_debug_entryexit(VXGE_TRACE,
 154                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 155 }
 156
 157 /*
 158  * vxge_callback_link_down
 159  *
 160  * This function is called during interrupt context to notify link down state
 161  * change.
 162  */
 163 void
 164 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 165 {
 166         struct net_device *dev = hldev->ndev;
 167         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 168
 169         vxge_debug_entryexit(VXGE_TRACE,
 170                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 171         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
 172
 173         vdev->stats.link_down++;
 174         netif_carrier_off(vdev->ndev);
 175         netif_tx_stop_all_queues(vdev->ndev);
 176
 177         vxge_debug_entryexit(VXGE_TRACE,
 178                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 179 }
 180
 181 /*
 182  * vxge_rx_alloc
 183  *
 184  * Allocate SKB.
 185  */
 186 static struct sk_buff*
 187 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 188 {
 189         struct net_device    *dev;
 190         struct sk_buff       *skb;
 191         struct vxge_rx_priv *rx_priv;
 192
 193         dev = ring->ndev;
 194         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 195                 ring->ndev->name, __func__, __LINE__);
 196
 197         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 198
 199         /* try to allocate skb first. this one may fail */
 200         skb = netdev_alloc_skb(dev, skb_size +
 201         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 202         if (skb == NULL) {
 203                 vxge_debug_mem(VXGE_ERR,
 204                         "%s: out of memory to allocate SKB", dev->name);
 205                 ring->stats.skb_alloc_fail++;
 206                 return NULL;
 207         }
 208
 209         vxge_debug_mem(VXGE_TRACE,
 210                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 211                 __func__, __LINE__, skb);
 212
 213         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 214
 215         rx_priv->skb = skb;
 216         rx_priv->skb_data = NULL;
 217         rx_priv->data_size = skb_size;
 218         vxge_debug_entryexit(VXGE_TRACE,
 219                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 220
 221         return skb;
 222 }
 223
 224 /*
 225  * vxge_rx_map
 226  */
 227 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 228 {
 229         struct vxge_rx_priv *rx_priv;
 230         dma_addr_t dma_addr;
 231
 232         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 233                 ring->ndev->name, __func__, __LINE__);
 234         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 235
 236         rx_priv->skb_data = rx_priv->skb->data;
 237         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 238                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 239
 240         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 241                 ring->stats.pci_map_fail++;
 242                 return -EIO;
 243         }
 244         vxge_debug_mem(VXGE_TRACE,
 245                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 246                 ring->ndev->name, __func__, __LINE__,
 247                 (unsigned long long)dma_addr);
 248         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 249
 250         rx_priv->data_dma = dma_addr;
 251         vxge_debug_entryexit(VXGE_TRACE,
 252                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 253
 254         return 0;
 255 }
 256
 257 /*
 258  * vxge_rx_initial_replenish
 259  * Allocation of RxD as an initial replenish procedure.
 260  */
 261 static enum vxge_hw_status
 262 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 263 {
 264         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 265         struct vxge_rx_priv *rx_priv;
 266
 267         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 268                 ring->ndev->name, __func__, __LINE__);
 269         if (vxge_rx_alloc(dtrh, ring,
 270                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 271                 return VXGE_HW_FAIL;
 272
 273         if (vxge_rx_map(dtrh, ring)) {
 274                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 275                 dev_kfree_skb(rx_priv->skb);
 276
 277                 return VXGE_HW_FAIL;
 278         }
 279         vxge_debug_entryexit(VXGE_TRACE,
 280                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 281
 282         return VXGE_HW_OK;
 283 }
 284
 285 static inline void
 286 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 287                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 288 {
 289
 290         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 291                         ring->ndev->name, __func__, __LINE__);
 292         skb_record_rx_queue(skb, ring->driver_id);
 293         skb->protocol = eth_type_trans(skb, ring->ndev);
 294
 295         ring->stats.rx_frms++;
 296         ring->stats.rx_bytes += pkt_length;
 297
 298         if (skb->pkt_type == PACKET_MULTICAST)
 299                 ring->stats.rx_mcast++;
 300
 301         vxge_debug_rx(VXGE_TRACE,
 302                 "%s: %s:%d  skb protocol = %d",
 303                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 304
 305         if (ring->gro_enable) {
 306                 if (ring->vlgrp && ext_info->vlan &&
 307                         (ring->vlan_tag_strip ==
 308                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 309                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 310                                         ext_info->vlan, skb);
 311                 else
 312                         napi_gro_receive(ring->napi_p, skb);
 313         } else {
 314                 if (ring->vlgrp && vlan &&
 315                         (ring->vlan_tag_strip ==
 316                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 317                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 318                 else
 319                         netif_receive_skb(skb);
 320         }
 321         vxge_debug_entryexit(VXGE_TRACE,
 322                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 323 }
 324
 325 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 326                                     struct vxge_rx_priv *rx_priv)
 327 {
 328         pci_dma_sync_single_for_device(ring->pdev,
 329                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 330
 331         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 332         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 333 }
 334
 335 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 336                              void *post_dtr, struct __vxge_hw_ring *ringh)
 337 {
 338         int dtr_count = *dtr_cnt;
 339         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 340                 if (*first_dtr)
 341                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 342                 *first_dtr = post_dtr;
 343         } else
 344                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 345         dtr_count++;
 346         *dtr_cnt = dtr_count;
 347 }
 348
 349 /*
 350  * vxge_rx_1b_compl
 351  *
 352  * If the interrupt is because of a received frame or if the receive ring
 353  * contains fresh as yet un-processed frames, this function is called.
 354  */
 355 enum vxge_hw_status
 356 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 357                  u8 t_code, void *userdata)
 358 {
 359         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 360         struct  net_device *dev = ring->ndev;
 361         unsigned int dma_sizes;
 362         void *first_dtr = NULL;
 363         int dtr_cnt = 0;
 364         int data_size;
 365         dma_addr_t data_dma;
 366         int pkt_length;
 367         struct sk_buff *skb;
 368         struct vxge_rx_priv *rx_priv;
 369         struct vxge_hw_ring_rxd_info ext_info;
 370         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 371                 ring->ndev->name, __func__, __LINE__);
 372         ring->pkts_processed = 0;
 373
 374         vxge_hw_ring_replenish(ringh);
 375
 376         do {
 377                 prefetch((char *)dtr + L1_CACHE_BYTES);
 378                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 379                 skb = rx_priv->skb;
 380                 data_size = rx_priv->data_size;
 381                 data_dma = rx_priv->data_dma;
 382                 prefetch(rx_priv->skb_data);
 383
 384                 vxge_debug_rx(VXGE_TRACE,
 385                         "%s: %s:%d  skb = 0x%p",
 386                         ring->ndev->name, __func__, __LINE__, skb);
 387
 388                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 389                 pkt_length = dma_sizes;
 390
 391                 pkt_length -= ETH_FCS_LEN;
 392
 393                 vxge_debug_rx(VXGE_TRACE,
 394                         "%s: %s:%d  Packet Length = %d",
 395                         ring->ndev->name, __func__, __LINE__, pkt_length);
 396
 397                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 398
 399                 /* check skb validity */
 400                 vxge_assert(skb);
 401
 402                 prefetch((char *)skb + L1_CACHE_BYTES);
 403                 if (unlikely(t_code)) {
 404
 405                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 406                                 VXGE_HW_OK) {
 407
 408                                 ring->stats.rx_errors++;
 409                                 vxge_debug_rx(VXGE_TRACE,
 410                                         "%s: %s :%d Rx T_code is %d",
 411                                         ring->ndev->name, __func__,
 412                                         __LINE__, t_code);
 413
 414                                 /* If the t_code is not supported and if the
 415                                  * t_code is other than 0x5 (unparseable packet
 416                                  * such as unknown UPV6 header), Drop it !!!
 417                                  */
 418                                 vxge_re_pre_post(dtr, ring, rx_priv);
 419
 420                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 421                                 ring->stats.rx_dropped++;
 422                                 continue;
 423                         }
 424                 }
 425
 426                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 427
 428                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 429
 430                                 if (!vxge_rx_map(dtr, ring)) {
 431                                         skb_put(skb, pkt_length);
 432
 433                                         pci_unmap_single(ring->pdev, data_dma,
 434                                                 data_size, PCI_DMA_FROMDEVICE);
 435
 436                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 437                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 438                                                 ringh);
 439                                 } else {
 440                                         dev_kfree_skb(rx_priv->skb);
 441                                         rx_priv->skb = skb;
 442                                         rx_priv->data_size = data_size;
 443                                         vxge_re_pre_post(dtr, ring, rx_priv);
 444
 445                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 446                                                 ringh);
 447                                         ring->stats.rx_dropped++;
 448                                         break;
 449                                 }
 450                         } else {
 451                                 vxge_re_pre_post(dtr, ring, rx_priv);
 452
 453                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 454                                 ring->stats.rx_dropped++;
 455                                 break;
 456                         }
 457                 } else {
 458                         struct sk_buff *skb_up;
 459
 460                         skb_up = netdev_alloc_skb(dev, pkt_length +
 461                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 462                         if (skb_up != NULL) {
 463                                 skb_reserve(skb_up,
 464                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 465
 466                                 pci_dma_sync_single_for_cpu(ring->pdev,
 467                                         data_dma, data_size,
 468                                         PCI_DMA_FROMDEVICE);
 469
 470                                 vxge_debug_mem(VXGE_TRACE,
 471                                         "%s: %s:%d  skb_up = %p",
 472                                         ring->ndev->name, __func__,
 473                                         __LINE__, skb);
 474                                 memcpy(skb_up->data, skb->data, pkt_length);
 475
 476                                 vxge_re_pre_post(dtr, ring, rx_priv);
 477
 478                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 479                                         ringh);
 480                                 /* will netif_rx small SKB instead */
 481                                 skb = skb_up;
 482                                 skb_put(skb, pkt_length);
 483                         } else {
 484                                 vxge_re_pre_post(dtr, ring, rx_priv);
 485
 486                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 487                                 vxge_debug_rx(VXGE_ERR,
 488                                         "%s: vxge_rx_1b_compl: out of "
 489                                         "memory", dev->name);
 490                                 ring->stats.skb_alloc_fail++;
 491                                 break;
 492                         }
 493                 }
 494
 495                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 496                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 497                     ring->rx_csum && /* Offload Rx side CSUM */
 498                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 499                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 500                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 501                 else
 502                         skb->ip_summed = CHECKSUM_NONE;
 503
 504                 vxge_rx_complete(ring, skb, ext_info.vlan,
 505                         pkt_length, &ext_info);
 506
 507                 ring->budget--;
 508                 ring->pkts_processed++;
 509                 if (!ring->budget)
 510                         break;
 511
 512         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 513                 &t_code) == VXGE_HW_OK);
 514
 515         if (first_dtr)
 516                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 517
 518         vxge_debug_entryexit(VXGE_TRACE,
 519                                 "%s:%d  Exiting...",
 520                                 __func__, __LINE__);
 521         return VXGE_HW_OK;
 522 }
 523
 524 /*
 525  * vxge_xmit_compl
 526  *
 527  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 528  * this function is called. It identifies the last TxD whose buffer was
 529  * freed and frees all skbs whose data have already DMA'ed into the NICs
 530  * internal memory.
 531  */
 532 enum vxge_hw_status
 533 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 534                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 535                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 536 {
 537         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 538         struct sk_buff *skb, **done_skb = *skb_ptr;
 539         int pkt_cnt = 0;
 540
 541         vxge_debug_entryexit(VXGE_TRACE,
 542                 "%s:%d Entered....", __func__, __LINE__);
 543
 544         do {
 545                 int frg_cnt;
 546                 skb_frag_t *frag;
 547                 int i = 0, j;
 548                 struct vxge_tx_priv *txd_priv =
 549                         vxge_hw_fifo_txdl_private_get(dtr);
 550
 551                 skb = txd_priv->skb;
 552                 frg_cnt = skb_shinfo(skb)->nr_frags;
 553                 frag = &skb_shinfo(skb)->frags[0];
 554
 555                 vxge_debug_tx(VXGE_TRACE,
 556                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 557                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 558                                 __LINE__, fifo_hw, dtr, t_code);
 559                 /* check skb validity */
 560                 vxge_assert(skb);
 561                 vxge_debug_tx(VXGE_TRACE,
 562                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 563                         fifo->ndev->name, __func__, __LINE__,
 564                         skb, txd_priv, frg_cnt);
 565                 if (unlikely(t_code)) {
 566                         fifo->stats.tx_errors++;
 567                         vxge_debug_tx(VXGE_ERR,
 568                                 "%s: tx: dtr %p completed due to "
 569                                 "error t_code %01x", fifo->ndev->name,
 570                                 dtr, t_code);
 571                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 572                 }
 573
 574                 /*  for unfragmented skb */
 575                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 576                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 577
 578                 for (j = 0; j < frg_cnt; j++) {
 579                         pci_unmap_page(fifo->pdev,
 580                                         txd_priv->dma_buffers[i++],
 581                                         frag->size, PCI_DMA_TODEVICE);
 582                         frag += 1;
 583                 }
 584
 585                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 586
 587                 /* Updating the statistics block */
 588                 fifo->stats.tx_frms++;
 589                 fifo->stats.tx_bytes += skb->len;
 590
 591                 *done_skb++ = skb;
 592
 593                 if (--nr_skb <= 0) {
 594                         *more = 1;
 595                         break;
 596                 }
 597
 598                 pkt_cnt++;
 599                 if (pkt_cnt > fifo->indicate_max_pkts)
 600                         break;
 601
 602         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 603                                 &dtr, &t_code) == VXGE_HW_OK);
 604
 605         *skb_ptr = done_skb;
 606         if (netif_tx_queue_stopped(fifo->txq))
 607                 netif_tx_wake_queue(fifo->txq);
 608
 609         vxge_debug_entryexit(VXGE_TRACE,
 610                                 "%s: %s:%d  Exiting...",
 611                                 fifo->ndev->name, __func__, __LINE__);
 612         return VXGE_HW_OK;
 613 }
 614
 615 /* select a vpath to transmit the packet */
 616 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 617 {
 618         u16 queue_len, counter = 0;
 619         if (skb->protocol == htons(ETH_P_IP)) {
 620                 struct iphdr *ip;
 621                 struct tcphdr *th;
 622
 623                 ip = ip_hdr(skb);
 624
 625                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 626                         th = (struct tcphdr *)(((unsigned char *)ip) +
 627                                         ip->ihl*4);
 628
 629                         queue_len = vdev->no_of_vpath;
 630                         counter = (ntohs(th->source) +
 631                                 ntohs(th->dest)) &
 632                                 vdev->vpath_selector[queue_len - 1];
 633                         if (counter >= queue_len)
 634                                 counter = queue_len - 1;
 635                 }
 636         }
 637         return counter;
 638 }
 639
 640 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 641         struct vxge_vpath *vpath, u64 del_mac)
 642 {
 643         struct list_head *entry, *next;
 644         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 645                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 646                         return TRUE;
 647         }
 648         return FALSE;
 649 }
 650
 651 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 652 {
 653         struct macInfo mac_info;
 654         u8 *mac_address = NULL;
 655         u64 mac_addr = 0, vpath_vector = 0;
 656         int vpath_idx = 0;
 657         enum vxge_hw_status status = VXGE_HW_OK;
 658         struct vxge_vpath *vpath = NULL;
 659         struct __vxge_hw_device *hldev;
 660
 661         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 662
 663         mac_address = (u8 *)&mac_addr;
 664         memcpy(mac_address, mac_header, ETH_ALEN);
 665
 666         /* Is this mac address already in the list? */
 667         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 668                 vpath = &vdev->vpaths[vpath_idx];
 669                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 670                         return vpath_idx;
 671         }
 672
 673         memset(&mac_info, 0, sizeof(struct macInfo));
 674         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 675
 676         /* Any vpath has room to add mac address to its da table? */
 677         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 678                 vpath = &vdev->vpaths[vpath_idx];
 679                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 680                         /* Add this mac address to this vpath */
 681                         mac_info.vpath_no = vpath_idx;
 682                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 683                         status = vxge_add_mac_addr(vdev, &mac_info);
 684                         if (status != VXGE_HW_OK)
 685                                 return -EPERM;
 686                         return vpath_idx;
 687                 }
 688         }
 689
 690         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 691         vpath_idx = 0;
 692         mac_info.vpath_no = vpath_idx;
 693         /* Is the first vpath already selected as catch-basin ? */
 694         vpath = &vdev->vpaths[vpath_idx];
 695         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 696                 /* Add this mac address to this vpath */
 697                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 698                         return -EPERM;
 699                 return vpath_idx;
 700         }
 701
 702         /* Select first vpath as catch-basin */
 703         vpath_vector = vxge_mBIT(vpath->device_id);
 704         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 705                                 vxge_hw_mgmt_reg_type_mrpcim,
 706                                 0,
 707                                 (ulong)offsetof(
 708                                         struct vxge_hw_mrpcim_reg,
 709                                         rts_mgr_cbasin_cfg),
 710                                 vpath_vector);
 711         if (status != VXGE_HW_OK) {
 712                 vxge_debug_tx(VXGE_ERR,
 713                         "%s: Unable to set the vpath-%d in catch-basin mode",
 714                         VXGE_DRIVER_NAME, vpath->device_id);
 715                 return -EPERM;
 716         }
 717
 718         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 719                 return -EPERM;
 720
 721         return vpath_idx;
 722 }
 723
 724 /**
 725  * vxge_xmit
 726  * @skb : the socket buffer containing the Tx data.
 727  * @dev : device pointer.
 728  *
 729  * This function is the Tx entry point of the driver. Neterion NIC supports
 730  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 731 */
 732 static netdev_tx_t
 733 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 734 {
 735         struct vxge_fifo *fifo = NULL;
 736         void *dtr_priv;
 737         void *dtr = NULL;
 738         struct vxgedev *vdev = NULL;
 739         enum vxge_hw_status status;
 740         int frg_cnt, first_frg_len;
 741         skb_frag_t *frag;
 742         int i = 0, j = 0, avail;
 743         u64 dma_pointer;
 744         struct vxge_tx_priv *txdl_priv = NULL;
 745         struct __vxge_hw_fifo *fifo_hw;
 746         int offload_type;
 747         int vpath_no = 0;
 748
 749         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 750                         dev->name, __func__, __LINE__);
 751
 752         /* A buffer with no data will be dropped */
 753         if (unlikely(skb->len <= 0)) {
 754                 vxge_debug_tx(VXGE_ERR,
 755                         "%s: Buffer has no data..", dev->name);
 756                 dev_kfree_skb(skb);
 757                 return NETDEV_TX_OK;
 758         }
 759
 760         vdev = (struct vxgedev *)netdev_priv(dev);
 761
 762         if (unlikely(!is_vxge_card_up(vdev))) {
 763                 vxge_debug_tx(VXGE_ERR,
 764                         "%s: vdev not initialized", dev->name);
 765                 dev_kfree_skb(skb);
 766                 return NETDEV_TX_OK;
 767         }
 768
 769         if (vdev->config.addr_learn_en) {
 770                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 771                 if (vpath_no == -EPERM) {
 772                         vxge_debug_tx(VXGE_ERR,
 773                                 "%s: Failed to store the mac address",
 774                                 dev->name);
 775                         dev_kfree_skb(skb);
 776                         return NETDEV_TX_OK;
 777                 }
 778         }
 779
 780         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 781                 vpath_no = skb_get_queue_mapping(skb);
 782         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 783                 vpath_no = vxge_get_vpath_no(vdev, skb);
 784
 785         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 786
 787         if (vpath_no >= vdev->no_of_vpath)
 788                 vpath_no = 0;
 789
 790         fifo = &vdev->vpaths[vpath_no].fifo;
 791         fifo_hw = fifo->handle;
 792
 793         if (netif_tx_queue_stopped(fifo->txq))
 794                 return NETDEV_TX_BUSY;
 795
 796         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 797         if (avail == 0) {
 798                 vxge_debug_tx(VXGE_ERR,
 799                         "%s: No free TXDs available", dev->name);
 800                 fifo->stats.txd_not_free++;
 801                 goto _exit0;
 802         }
 803
 804         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 805          * completion will resume the queue.
 806          */
 807         if (avail == 1)
 808                 netif_tx_stop_queue(fifo->txq);
 809
 810         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 811         if (unlikely(status != VXGE_HW_OK)) {
 812                 vxge_debug_tx(VXGE_ERR,
 813                    "%s: Out of descriptors .", dev->name);
 814                 fifo->stats.txd_out_of_desc++;
 815                 goto _exit0;
 816         }
 817
 818         vxge_debug_tx(VXGE_TRACE,
 819                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 820                 dev->name, __func__, __LINE__,
 821                 fifo_hw, dtr, dtr_priv);
 822
 823         if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
 824                 u16 vlan_tag = vlan_tx_tag_get(skb);
 825                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 826         }
 827
 828         first_frg_len = skb_headlen(skb);
 829
 830         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 831                                 PCI_DMA_TODEVICE);
 832
 833         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 834                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 835                 fifo->stats.pci_map_fail++;
 836                 goto _exit0;
 837         }
 838
 839         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 840         txdl_priv->skb = skb;
 841         txdl_priv->dma_buffers[j] = dma_pointer;
 842
 843         frg_cnt = skb_shinfo(skb)->nr_frags;
 844         vxge_debug_tx(VXGE_TRACE,
 845                         "%s: %s:%d skb = %p txdl_priv = %p "
 846                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 847                         __func__, __LINE__, skb, txdl_priv,
 848                         frg_cnt, (unsigned long long)dma_pointer);
 849
 850         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 851                 first_frg_len);
 852
 853         frag = &skb_shinfo(skb)->frags[0];
 854         for (i = 0; i < frg_cnt; i++) {
 855                 /* ignore 0 length fragment */
 856                 if (!frag->size)
 857                         continue;
 858
 859                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 860                                 frag->page_offset, frag->size,
 861                                 PCI_DMA_TODEVICE);
 862
 863                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 864                         goto _exit2;
 865                 vxge_debug_tx(VXGE_TRACE,
 866                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 867                                 dev->name, __func__, __LINE__, i,
 868                                 (unsigned long long)dma_pointer);
 869
 870                 txdl_priv->dma_buffers[j] = dma_pointer;
 871                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 872                                         frag->size);
 873                 frag += 1;
 874         }
 875
 876         offload_type = vxge_offload_type(skb);
 877
 878         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 879                 int mss = vxge_tcp_mss(skb);
 880                 if (mss) {
 881                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 882                                 dev->name, __func__, __LINE__, mss);
 883                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 884                 } else {
 885                         vxge_assert(skb->len <=
 886                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 887                         vxge_assert(0);
 888                         goto _exit1;
 889                 }
 890         }
 891
 892         if (skb->ip_summed == CHECKSUM_PARTIAL)
 893                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 894                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 895                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 896                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 897
 898         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 899
 900         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 901                 dev->name, __func__, __LINE__);
 902         return NETDEV_TX_OK;
 903
 904 _exit2:
 905         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 906 _exit1:
 907         j = 0;
 908         frag = &skb_shinfo(skb)->frags[0];
 909
 910         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 911                         skb_headlen(skb), PCI_DMA_TODEVICE);
 912
 913         for (; j < i; j++) {
 914                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 915                         frag->size, PCI_DMA_TODEVICE);
 916                 frag += 1;
 917         }
 918
 919         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 920 _exit0:
 921         netif_tx_stop_queue(fifo->txq);
 922         dev_kfree_skb(skb);
 923
 924         return NETDEV_TX_OK;
 925 }
 926
 927 /*
 928  * vxge_rx_term
 929  *
 930  * Function will be called by hw function to abort all outstanding receive
 931  * descriptors.
 932  */
 933 static void
 934 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
 935 {
 936         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 937         struct vxge_rx_priv *rx_priv =
 938                 vxge_hw_ring_rxd_private_get(dtrh);
 939
 940         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 941                         ring->ndev->name, __func__, __LINE__);
 942         if (state != VXGE_HW_RXD_STATE_POSTED)
 943                 return;
 944
 945         pci_unmap_single(ring->pdev, rx_priv->data_dma,
 946                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 947
 948         dev_kfree_skb(rx_priv->skb);
 949         rx_priv->skb_data = NULL;
 950
 951         vxge_debug_entryexit(VXGE_TRACE,
 952                 "%s: %s:%d  Exiting...",
 953                 ring->ndev->name, __func__, __LINE__);
 954 }
 955
 956 /*
 957  * vxge_tx_term
 958  *
 959  * Function will be called to abort all outstanding tx descriptors
 960  */
 961 static void
 962 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
 963 {
 964         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 965         skb_frag_t *frag;
 966         int i = 0, j, frg_cnt;
 967         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
 968         struct sk_buff *skb = txd_priv->skb;
 969
 970         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
 971
 972         if (state != VXGE_HW_TXDL_STATE_POSTED)
 973                 return;
 974
 975         /* check skb validity */
 976         vxge_assert(skb);
 977         frg_cnt = skb_shinfo(skb)->nr_frags;
 978         frag = &skb_shinfo(skb)->frags[0];
 979
 980         /*  for unfragmented skb */
 981         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 982                 skb_headlen(skb), PCI_DMA_TODEVICE);
 983
 984         for (j = 0; j < frg_cnt; j++) {
 985                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
 986                                frag->size, PCI_DMA_TODEVICE);
 987                 frag += 1;
 988         }
 989
 990         dev_kfree_skb(skb);
 991
 992         vxge_debug_entryexit(VXGE_TRACE,
 993                 "%s:%d  Exiting...", __func__, __LINE__);
 994 }
 995
 996 /**
 997  * vxge_set_multicast
 998  * @dev: pointer to the device structure
 999  *
1000  * Entry point for multicast address enable/disable
1001  * This function is a driver entry point which gets called by the kernel
1002  * whenever multicast addresses must be enabled/disabled. This also gets
1003  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1004  * determine, if multicast address must be enabled or if promiscuous mode
1005  * is to be disabled etc.
1006  */
1007 static void vxge_set_multicast(struct net_device *dev)
1008 {
1009         struct netdev_hw_addr *ha;
1010         struct vxgedev *vdev;
1011         int i, mcast_cnt = 0;
1012         struct __vxge_hw_device *hldev;
1013         struct vxge_vpath *vpath;
1014         enum vxge_hw_status status = VXGE_HW_OK;
1015         struct macInfo mac_info;
1016         int vpath_idx = 0;
1017         struct vxge_mac_addrs *mac_entry;
1018         struct list_head *list_head;
1019         struct list_head *entry, *next;
1020         u8 *mac_address = NULL;
1021
1022         vxge_debug_entryexit(VXGE_TRACE,
1023                 "%s:%d", __func__, __LINE__);
1024
1025         vdev = (struct vxgedev *)netdev_priv(dev);
1026         hldev = (struct __vxge_hw_device  *)vdev->devh;
1027
1028         if (unlikely(!is_vxge_card_up(vdev)))
1029                 return;
1030
1031         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1032                 for (i = 0; i < vdev->no_of_vpath; i++) {
1033                         vpath = &vdev->vpaths[i];
1034                         vxge_assert(vpath->is_open);
1035                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1036                         if (status != VXGE_HW_OK)
1037                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1038                                                 "multicast, status %d", status);
1039                         vdev->all_multi_flg = 1;
1040                 }
1041         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1042                 for (i = 0; i < vdev->no_of_vpath; i++) {
1043                         vpath = &vdev->vpaths[i];
1044                         vxge_assert(vpath->is_open);
1045                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1046                         if (status != VXGE_HW_OK)
1047                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1048                                                 "multicast, status %d", status);
1049                         vdev->all_multi_flg = 0;
1050                 }
1051         }
1052
1053
1054         if (!vdev->config.addr_learn_en) {
1055                 for (i = 0; i < vdev->no_of_vpath; i++) {
1056                         vpath = &vdev->vpaths[i];
1057                         vxge_assert(vpath->is_open);
1058
1059                         if (dev->flags & IFF_PROMISC)
1060                                 status = vxge_hw_vpath_promisc_enable(
1061                                         vpath->handle);
1062                         else
1063                                 status = vxge_hw_vpath_promisc_disable(
1064                                         vpath->handle);
1065                         if (status != VXGE_HW_OK)
1066                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1067                                         ", status %d", dev->flags&IFF_PROMISC ?
1068                                         "enable" : "disable", status);
1069                 }
1070         }
1071
1072         memset(&mac_info, 0, sizeof(struct macInfo));
1073         /* Update individual M_CAST address list */
1074         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1075                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1076                 list_head = &vdev->vpaths[0].mac_addr_list;
1077                 if ((netdev_mc_count(dev) +
1078                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1079                                 vdev->vpaths[0].max_mac_addr_cnt)
1080                         goto _set_all_mcast;
1081
1082                 /* Delete previous MC's */
1083                 for (i = 0; i < mcast_cnt; i++) {
1084                         list_for_each_safe(entry, next, list_head) {
1085                                 mac_entry = (struct vxge_mac_addrs *) entry;
1086                                 /* Copy the mac address to delete */
1087                                 mac_address = (u8 *)&mac_entry->macaddr;
1088                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1089
1090                                 /* Is this a multicast address */
1091                                 if (0x01 & mac_info.macaddr[0]) {
1092                                         for (vpath_idx = 0; vpath_idx <
1093                                                 vdev->no_of_vpath;
1094                                                 vpath_idx++) {
1095                                                 mac_info.vpath_no = vpath_idx;
1096                                                 status = vxge_del_mac_addr(
1097                                                                 vdev,
1098                                                                 &mac_info);
1099                                         }
1100                                 }
1101                         }
1102                 }
1103
1104                 /* Add new ones */
1105                 netdev_for_each_mc_addr(ha, dev) {
1106                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1107                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1108                                         vpath_idx++) {
1109                                 mac_info.vpath_no = vpath_idx;
1110                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1111                                 status = vxge_add_mac_addr(vdev, &mac_info);
1112                                 if (status != VXGE_HW_OK) {
1113                                         vxge_debug_init(VXGE_ERR,
1114                                                 "%s:%d Setting individual"
1115                                                 "multicast address failed",
1116                                                 __func__, __LINE__);
1117                                         goto _set_all_mcast;
1118                                 }
1119                         }
1120                 }
1121
1122                 return;
1123 _set_all_mcast:
1124                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1125                 /* Delete previous MC's */
1126                 for (i = 0; i < mcast_cnt; i++) {
1127                         list_for_each_safe(entry, next, list_head) {
1128                                 mac_entry = (struct vxge_mac_addrs *) entry;
1129                                 /* Copy the mac address to delete */
1130                                 mac_address = (u8 *)&mac_entry->macaddr;
1131                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1132
1133                                 /* Is this a multicast address */
1134                                 if (0x01 & mac_info.macaddr[0])
1135                                         break;
1136                         }
1137
1138                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1139                                         vpath_idx++) {
1140                                 mac_info.vpath_no = vpath_idx;
1141                                 status = vxge_del_mac_addr(vdev, &mac_info);
1142                         }
1143                 }
1144
1145                 /* Enable all multicast */
1146                 for (i = 0; i < vdev->no_of_vpath; i++) {
1147                         vpath = &vdev->vpaths[i];
1148                         vxge_assert(vpath->is_open);
1149
1150                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1151                         if (status != VXGE_HW_OK) {
1152                                 vxge_debug_init(VXGE_ERR,
1153                                         "%s:%d Enabling all multicasts failed",
1154                                          __func__, __LINE__);
1155                         }
1156                         vdev->all_multi_flg = 1;
1157                 }
1158                 dev->flags |= IFF_ALLMULTI;
1159         }
1160
1161         vxge_debug_entryexit(VXGE_TRACE,
1162                 "%s:%d  Exiting...", __func__, __LINE__);
1163 }
1164
1165 /**
1166  * vxge_set_mac_addr
1167  * @dev: pointer to the device structure
1168  *
1169  * Update entry "0" (default MAC addr)
1170  */
1171 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1172 {
1173         struct sockaddr *addr = p;
1174         struct vxgedev *vdev;
1175         struct __vxge_hw_device  *hldev;
1176         enum vxge_hw_status status = VXGE_HW_OK;
1177         struct macInfo mac_info_new, mac_info_old;
1178         int vpath_idx = 0;
1179
1180         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1181
1182         vdev = (struct vxgedev *)netdev_priv(dev);
1183         hldev = vdev->devh;
1184
1185         if (!is_valid_ether_addr(addr->sa_data))
1186                 return -EINVAL;
1187
1188         memset(&mac_info_new, 0, sizeof(struct macInfo));
1189         memset(&mac_info_old, 0, sizeof(struct macInfo));
1190
1191         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1192                 __func__, __LINE__);
1193
1194         /* Get the old address */
1195         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1196
1197         /* Copy the new address */
1198         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1199
1200         /* First delete the old mac address from all the vpaths
1201         as we can't specify the index while adding new mac address */
1202         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1203                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1204                 if (!vpath->is_open) {
1205                         /* This can happen when this interface is added/removed
1206                         to the bonding interface. Delete this station address
1207                         from the linked list */
1208                         vxge_mac_list_del(vpath, &mac_info_old);
1209
1210                         /* Add this new address to the linked list
1211                         for later restoring */
1212                         vxge_mac_list_add(vpath, &mac_info_new);
1213
1214                         continue;
1215                 }
1216                 /* Delete the station address */
1217                 mac_info_old.vpath_no = vpath_idx;
1218                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1219         }
1220
1221         if (unlikely(!is_vxge_card_up(vdev))) {
1222                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1223                 return VXGE_HW_OK;
1224         }
1225
1226         /* Set this mac address to all the vpaths */
1227         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1228                 mac_info_new.vpath_no = vpath_idx;
1229                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1230                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1231                 if (status != VXGE_HW_OK)
1232                         return -EINVAL;
1233         }
1234
1235         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1236
1237         return status;
1238 }
1239
1240 /*
1241  * vxge_vpath_intr_enable
1242  * @vdev: pointer to vdev
1243  * @vp_id: vpath for which to enable the interrupts
1244  *
1245  * Enables the interrupts for the vpath
1246 */
1247 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1248 {
1249         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1250         int msix_id = 0;
1251         int tim_msix_id[4] = {0, 1, 0, 0};
1252         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1253
1254         vxge_hw_vpath_intr_enable(vpath->handle);
1255
1256         if (vdev->config.intr_type == INTA)
1257                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1258         else {
1259                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1260                         alarm_msix_id);
1261
1262                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1263                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1264                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1265
1266                 /* enable the alarm vector */
1267                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1268                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1269                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1270         }
1271 }
1272
1273 /*
1274  * vxge_vpath_intr_disable
1275  * @vdev: pointer to vdev
1276  * @vp_id: vpath for which to disable the interrupts
1277  *
1278  * Disables the interrupts for the vpath
1279 */
1280 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1281 {
1282         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1283         int msix_id;
1284
1285         vxge_hw_vpath_intr_disable(vpath->handle);
1286
1287         if (vdev->config.intr_type == INTA)
1288                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1289         else {
1290                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1291                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1292                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1293
1294                 /* disable the alarm vector */
1295                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1296                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1297                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1298         }
1299 }
1300
1301 /*
1302  * vxge_reset_vpath
1303  * @vdev: pointer to vdev
1304  * @vp_id: vpath to reset
1305  *
1306  * Resets the vpath
1307 */
1308 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1309 {
1310         enum vxge_hw_status status = VXGE_HW_OK;
1311         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1312         int ret = 0;
1313
1314         /* check if device is down already */
1315         if (unlikely(!is_vxge_card_up(vdev)))
1316                 return 0;
1317
1318         /* is device reset already scheduled */
1319         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1320                 return 0;
1321
1322         if (vpath->handle) {
1323                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1324                         if (is_vxge_card_up(vdev) &&
1325                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1326                                         != VXGE_HW_OK) {
1327                                 vxge_debug_init(VXGE_ERR,
1328                                         "vxge_hw_vpath_recover_from_reset"
1329                                         "failed for vpath:%d", vp_id);
1330                                 return status;
1331                         }
1332                 } else {
1333                         vxge_debug_init(VXGE_ERR,
1334                                 "vxge_hw_vpath_reset failed for"
1335                                 "vpath:%d", vp_id);
1336                                 return status;
1337                 }
1338         } else
1339                 return VXGE_HW_FAIL;
1340
1341         vxge_restore_vpath_mac_addr(vpath);
1342         vxge_restore_vpath_vid_table(vpath);
1343
1344         /* Enable all broadcast */
1345         vxge_hw_vpath_bcast_enable(vpath->handle);
1346
1347         /* Enable all multicast */
1348         if (vdev->all_multi_flg) {
1349                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1350                 if (status != VXGE_HW_OK)
1351                         vxge_debug_init(VXGE_ERR,
1352                                 "%s:%d Enabling multicast failed",
1353                                 __func__, __LINE__);
1354         }
1355
1356         /* Enable the interrupts */
1357         vxge_vpath_intr_enable(vdev, vp_id);
1358
1359         smp_wmb();
1360
1361         /* Enable the flow of traffic through the vpath */
1362         vxge_hw_vpath_enable(vpath->handle);
1363
1364         smp_wmb();
1365         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1366         vpath->ring.last_status = VXGE_HW_OK;
1367
1368         /* Vpath reset done */
1369         clear_bit(vp_id, &vdev->vp_reset);
1370
1371         /* Start the vpath queue */
1372         if (netif_tx_queue_stopped(vpath->fifo.txq))
1373                 netif_tx_wake_queue(vpath->fifo.txq);
1374
1375         return ret;
1376 }
1377
1378 static int do_vxge_reset(struct vxgedev *vdev, int event)
1379 {
1380         enum vxge_hw_status status;
1381         int ret = 0, vp_id, i;
1382
1383         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1384
1385         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1386                 /* check if device is down already */
1387                 if (unlikely(!is_vxge_card_up(vdev)))
1388                         return 0;
1389
1390                 /* is reset already scheduled */
1391                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1392                         return 0;
1393         }
1394
1395         if (event == VXGE_LL_FULL_RESET) {
1396                 /* wait for all the vpath reset to complete */
1397                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1398                         while (test_bit(vp_id, &vdev->vp_reset))
1399                                 msleep(50);
1400                 }
1401
1402                 /* if execution mode is set to debug, don't reset the adapter */
1403                 if (unlikely(vdev->exec_mode)) {
1404                         vxge_debug_init(VXGE_ERR,
1405                                 "%s: execution mode is debug, returning..",
1406                                 vdev->ndev->name);
1407                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1408                         netif_tx_stop_all_queues(vdev->ndev);
1409                         return 0;
1410                 }
1411         }
1412
1413         if (event == VXGE_LL_FULL_RESET) {
1414                 vxge_hw_device_intr_disable(vdev->devh);
1415
1416                 switch (vdev->cric_err_event) {
1417                 case VXGE_HW_EVENT_UNKNOWN:
1418                         netif_tx_stop_all_queues(vdev->ndev);
1419                         vxge_debug_init(VXGE_ERR,
1420                                 "fatal: %s: Disabling device due to"
1421                                 "unknown error",
1422                                 vdev->ndev->name);
1423                         ret = -EPERM;
1424                         goto out;
1425                 case VXGE_HW_EVENT_RESET_START:
1426                         break;
1427                 case VXGE_HW_EVENT_RESET_COMPLETE:
1428                 case VXGE_HW_EVENT_LINK_DOWN:
1429                 case VXGE_HW_EVENT_LINK_UP:
1430                 case VXGE_HW_EVENT_ALARM_CLEARED:
1431                 case VXGE_HW_EVENT_ECCERR:
1432                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1433                         ret = -EPERM;
1434                         goto out;
1435                 case VXGE_HW_EVENT_FIFO_ERR:
1436                 case VXGE_HW_EVENT_VPATH_ERR:
1437                         break;
1438                 case VXGE_HW_EVENT_CRITICAL_ERR:
1439                         netif_tx_stop_all_queues(vdev->ndev);
1440                         vxge_debug_init(VXGE_ERR,
1441                                 "fatal: %s: Disabling device due to"
1442                                 "serious error",
1443                                 vdev->ndev->name);
1444                         /* SOP or device reset required */
1445                         /* This event is not currently used */
1446                         ret = -EPERM;
1447                         goto out;
1448                 case VXGE_HW_EVENT_SERR:
1449                         netif_tx_stop_all_queues(vdev->ndev);
1450                         vxge_debug_init(VXGE_ERR,
1451                                 "fatal: %s: Disabling device due to"
1452                                 "serious error",
1453                                 vdev->ndev->name);
1454                         ret = -EPERM;
1455                         goto out;
1456                 case VXGE_HW_EVENT_SRPCIM_SERR:
1457                 case VXGE_HW_EVENT_MRPCIM_SERR:
1458                         ret = -EPERM;
1459                         goto out;
1460                 case VXGE_HW_EVENT_SLOT_FREEZE:
1461                         netif_tx_stop_all_queues(vdev->ndev);
1462                         vxge_debug_init(VXGE_ERR,
1463                                 "fatal: %s: Disabling device due to"
1464                                 "slot freeze",
1465                                 vdev->ndev->name);
1466                         ret = -EPERM;
1467                         goto out;
1468                 default:
1469                         break;
1470
1471                 }
1472         }
1473
1474         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1475                 netif_tx_stop_all_queues(vdev->ndev);
1476
1477         if (event == VXGE_LL_FULL_RESET) {
1478                 status = vxge_reset_all_vpaths(vdev);
1479                 if (status != VXGE_HW_OK) {
1480                         vxge_debug_init(VXGE_ERR,
1481                                 "fatal: %s: can not reset vpaths",
1482                                 vdev->ndev->name);
1483                         ret = -EPERM;
1484                         goto out;
1485                 }
1486         }
1487
1488         if (event == VXGE_LL_COMPL_RESET) {
1489                 for (i = 0; i < vdev->no_of_vpath; i++)
1490                         if (vdev->vpaths[i].handle) {
1491                                 if (vxge_hw_vpath_recover_from_reset(
1492                                         vdev->vpaths[i].handle)
1493                                                 != VXGE_HW_OK) {
1494                                         vxge_debug_init(VXGE_ERR,
1495                                                 "vxge_hw_vpath_recover_"
1496                                                 "from_reset failed for vpath: "
1497                                                 "%d", i);
1498                                         ret = -EPERM;
1499                                         goto out;
1500                                 }
1501                                 } else {
1502                                         vxge_debug_init(VXGE_ERR,
1503                                         "vxge_hw_vpath_reset failed for "
1504                                                 "vpath:%d", i);
1505                                         ret = -EPERM;
1506                                         goto out;
1507                                 }
1508         }
1509
1510         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1511                 /* Reprogram the DA table with populated mac addresses */
1512                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1513                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1514                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1515                 }
1516
1517                 /* enable vpath interrupts */
1518                 for (i = 0; i < vdev->no_of_vpath; i++)
1519                         vxge_vpath_intr_enable(vdev, i);
1520
1521                 vxge_hw_device_intr_enable(vdev->devh);
1522
1523                 smp_wmb();
1524
1525                 /* Indicate card up */
1526                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1527
1528                 /* Get the traffic to flow through the vpaths */
1529                 for (i = 0; i < vdev->no_of_vpath; i++) {
1530                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1531                         smp_wmb();
1532                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1533                 }
1534
1535                 netif_tx_wake_all_queues(vdev->ndev);
1536         }
1537
1538 out:
1539         vxge_debug_entryexit(VXGE_TRACE,
1540                 "%s:%d  Exiting...", __func__, __LINE__);
1541
1542         /* Indicate reset done */
1543         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1544                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1545         return ret;
1546 }
1547
1548 /*
1549  * vxge_reset
1550  * @vdev: pointer to ll device
1551  *
1552  * driver may reset the chip on events of serr, eccerr, etc
1553  */
1554 int vxge_reset(struct vxgedev *vdev)
1555 {
1556         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1557 }
1558
1559 /**
1560  * vxge_poll - Receive handler when Receive Polling is used.
1561  * @dev: pointer to the device structure.
1562  * @budget: Number of packets budgeted to be processed in this iteration.
1563  *
1564  * This function comes into picture only if Receive side is being handled
1565  * through polling (called NAPI in linux). It mostly does what the normal
1566  * Rx interrupt handler does in terms of descriptor and packet processing
1567  * but not in an interrupt context. Also it will process a specified number
1568  * of packets at most in one iteration. This value is passed down by the
1569  * kernel as the function argument 'budget'.
1570  */
1571 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1572 {
1573         struct vxge_ring *ring =
1574                 container_of(napi, struct vxge_ring, napi);
1575         int budget_org = budget;
1576         ring->budget = budget;
1577
1578         vxge_hw_vpath_poll_rx(ring->handle);
1579
1580         if (ring->pkts_processed < budget_org) {
1581                 napi_complete(napi);
1582                 /* Re enable the Rx interrupts for the vpath */
1583                 vxge_hw_channel_msix_unmask(
1584                                 (struct __vxge_hw_channel *)ring->handle,
1585                                 ring->rx_vector_no);
1586         }
1587
1588         return ring->pkts_processed;
1589 }
1590
1591 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1592 {
1593         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1594         int pkts_processed = 0;
1595         int i;
1596         int budget_org = budget;
1597         struct vxge_ring *ring;
1598
1599         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1600                 pci_get_drvdata(vdev->pdev);
1601
1602         for (i = 0; i < vdev->no_of_vpath; i++) {
1603                 ring = &vdev->vpaths[i].ring;
1604                 ring->budget = budget;
1605                 vxge_hw_vpath_poll_rx(ring->handle);
1606                 pkts_processed += ring->pkts_processed;
1607                 budget -= ring->pkts_processed;
1608                 if (budget <= 0)
1609                         break;
1610         }
1611
1612         VXGE_COMPLETE_ALL_TX(vdev);
1613
1614         if (pkts_processed < budget_org) {
1615                 napi_complete(napi);
1616                 /* Re enable the Rx interrupts for the ring */
1617                 vxge_hw_device_unmask_all(hldev);
1618                 vxge_hw_device_flush_io(hldev);
1619         }
1620
1621         return pkts_processed;
1622 }
1623
1624 #ifdef CONFIG_NET_POLL_CONTROLLER
1625 /**
1626  * vxge_netpoll - netpoll event handler entry point
1627  * @dev : pointer to the device structure.
1628  * Description:
1629  *      This function will be called by upper layer to check for events on the
1630  * interface in situations where interrupts are disabled. It is used for
1631  * specific in-kernel networking tasks, such as remote consoles and kernel
1632  * debugging over the network (example netdump in RedHat).
1633  */
1634 static void vxge_netpoll(struct net_device *dev)
1635 {
1636         struct __vxge_hw_device  *hldev;
1637         struct vxgedev *vdev;
1638
1639         vdev = (struct vxgedev *)netdev_priv(dev);
1640         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1641
1642         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1643
1644         if (pci_channel_offline(vdev->pdev))
1645                 return;
1646
1647         disable_irq(dev->irq);
1648         vxge_hw_device_clear_tx_rx(hldev);
1649
1650         vxge_hw_device_clear_tx_rx(hldev);
1651         VXGE_COMPLETE_ALL_RX(vdev);
1652         VXGE_COMPLETE_ALL_TX(vdev);
1653
1654         enable_irq(dev->irq);
1655
1656         vxge_debug_entryexit(VXGE_TRACE,
1657                 "%s:%d  Exiting...", __func__, __LINE__);
1658 }
1659 #endif
1660
1661 /* RTH configuration */
1662 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1663 {
1664         enum vxge_hw_status status = VXGE_HW_OK;
1665         struct vxge_hw_rth_hash_types hash_types;
1666         u8 itable[256] = {0}; /* indirection table */
1667         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1668         int index;
1669
1670         /*
1671          * Filling
1672          *      - itable with bucket numbers
1673          *      - mtable with bucket-to-vpath mapping
1674          */
1675         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1676                 itable[index] = index;
1677                 mtable[index] = index % vdev->no_of_vpath;
1678         }
1679
1680         /* Fill RTH hash types */
1681         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1682         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1683         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1684         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1685         hash_types.hash_type_tcpipv6ex_en =
1686                                         vdev->config.rth_hash_type_tcpipv6ex;
1687         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1688
1689         /* set indirection table, bucket-to-vpath mapping */
1690         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1691                                                 vdev->no_of_vpath,
1692                                                 mtable, itable,
1693                                                 vdev->config.rth_bkt_sz);
1694         if (status != VXGE_HW_OK) {
1695                 vxge_debug_init(VXGE_ERR,
1696                         "RTH indirection table configuration failed "
1697                         "for vpath:%d", vdev->vpaths[0].device_id);
1698                 return status;
1699         }
1700
1701         /*
1702         * Because the itable_set() method uses the active_table field
1703         * for the target virtual path the RTH config should be updated
1704         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1705         * when steering frames.
1706         */
1707          for (index = 0; index < vdev->no_of_vpath; index++) {
1708                 status = vxge_hw_vpath_rts_rth_set(
1709                                 vdev->vpaths[index].handle,
1710                                 vdev->config.rth_algorithm,
1711                                 &hash_types,
1712                                 vdev->config.rth_bkt_sz);
1713
1714                  if (status != VXGE_HW_OK) {
1715                         vxge_debug_init(VXGE_ERR,
1716                                 "RTH configuration failed for vpath:%d",
1717                                 vdev->vpaths[index].device_id);
1718                         return status;
1719                  }
1720          }
1721
1722         return status;
1723 }
1724
1725 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1726 {
1727         struct vxge_mac_addrs *new_mac_entry;
1728         u8 *mac_address = NULL;
1729
1730         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1731                 return TRUE;
1732
1733         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1734         if (!new_mac_entry) {
1735                 vxge_debug_mem(VXGE_ERR,
1736                         "%s: memory allocation failed",
1737                         VXGE_DRIVER_NAME);
1738                 return FALSE;
1739         }
1740
1741         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1742
1743         /* Copy the new mac address to the list */
1744         mac_address = (u8 *)&new_mac_entry->macaddr;
1745         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1746
1747         new_mac_entry->state = mac->state;
1748         vpath->mac_addr_cnt++;
1749
1750         /* Is this a multicast address */
1751         if (0x01 & mac->macaddr[0])
1752                 vpath->mcast_addr_cnt++;
1753
1754         return TRUE;
1755 }
1756
1757 /* Add a mac address to DA table */
1758 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1759 {
1760         enum vxge_hw_status status = VXGE_HW_OK;
1761         struct vxge_vpath *vpath;
1762         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1763
1764         if (0x01 & mac->macaddr[0]) /* multicast address */
1765                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1766         else
1767                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1768
1769         vpath = &vdev->vpaths[mac->vpath_no];
1770         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1771                                                 mac->macmask, duplicate_mode);
1772         if (status != VXGE_HW_OK) {
1773                 vxge_debug_init(VXGE_ERR,
1774                         "DA config add entry failed for vpath:%d",
1775                         vpath->device_id);
1776         } else
1777                 if (FALSE == vxge_mac_list_add(vpath, mac))
1778                         status = -EPERM;
1779
1780         return status;
1781 }
1782
1783 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1784 {
1785         struct list_head *entry, *next;
1786         u64 del_mac = 0;
1787         u8 *mac_address = (u8 *) (&del_mac);
1788
1789         /* Copy the mac address to delete from the list */
1790         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1791
1792         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1793                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1794                         list_del(entry);
1795                         kfree((struct vxge_mac_addrs *)entry);
1796                         vpath->mac_addr_cnt--;
1797
1798                         /* Is this a multicast address */
1799                         if (0x01 & mac->macaddr[0])
1800                                 vpath->mcast_addr_cnt--;
1801                         return TRUE;
1802                 }
1803         }
1804
1805         return FALSE;
1806 }
1807 /* delete a mac address from DA table */
1808 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1809 {
1810         enum vxge_hw_status status = VXGE_HW_OK;
1811         struct vxge_vpath *vpath;
1812
1813         vpath = &vdev->vpaths[mac->vpath_no];
1814         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1815                                                 mac->macmask);
1816         if (status != VXGE_HW_OK) {
1817                 vxge_debug_init(VXGE_ERR,
1818                         "DA config delete entry failed for vpath:%d",
1819                         vpath->device_id);
1820         } else
1821                 vxge_mac_list_del(vpath, mac);
1822         return status;
1823 }
1824
1825 /* list all mac addresses from DA table */
1826 enum vxge_hw_status
1827 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1828                                         struct macInfo *mac)
1829 {
1830         enum vxge_hw_status status = VXGE_HW_OK;
1831         unsigned char macmask[ETH_ALEN];
1832         unsigned char macaddr[ETH_ALEN];
1833
1834         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1835                                 macaddr, macmask);
1836         if (status != VXGE_HW_OK) {
1837                 vxge_debug_init(VXGE_ERR,
1838                         "DA config list entry failed for vpath:%d",
1839                         vpath->device_id);
1840                 return status;
1841         }
1842
1843         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1844
1845                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1846                                 macaddr, macmask);
1847                 if (status != VXGE_HW_OK)
1848                         break;
1849         }
1850
1851         return status;
1852 }
1853
1854 /* Store all vlan ids from the list to the vid table */
1855 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1856 {
1857         enum vxge_hw_status status = VXGE_HW_OK;
1858         struct vxgedev *vdev = vpath->vdev;
1859         u16 vid;
1860
1861         if (vdev->vlgrp && vpath->is_open) {
1862
1863                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1864                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1865                                 continue;
1866                         /* Add these vlan to the vid table */
1867                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1868                 }
1869         }
1870
1871         return status;
1872 }
1873
1874 /* Store all mac addresses from the list to the DA table */
1875 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1876 {
1877         enum vxge_hw_status status = VXGE_HW_OK;
1878         struct macInfo mac_info;
1879         u8 *mac_address = NULL;
1880         struct list_head *entry, *next;
1881
1882         memset(&mac_info, 0, sizeof(struct macInfo));
1883
1884         if (vpath->is_open) {
1885
1886                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1887                         mac_address =
1888                                 (u8 *)&
1889                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1890                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1891                         ((struct vxge_mac_addrs *)entry)->state =
1892                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1893                         /* does this mac address already exist in da table? */
1894                         status = vxge_search_mac_addr_in_da_table(vpath,
1895                                 &mac_info);
1896                         if (status != VXGE_HW_OK) {
1897                                 /* Add this mac address to the DA table */
1898                                 status = vxge_hw_vpath_mac_addr_add(
1899                                         vpath->handle, mac_info.macaddr,
1900                                         mac_info.macmask,
1901                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1902                                 if (status != VXGE_HW_OK) {
1903                                         vxge_debug_init(VXGE_ERR,
1904                                             "DA add entry failed for vpath:%d",
1905                                             vpath->device_id);
1906                                         ((struct vxge_mac_addrs *)entry)->state
1907                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1908                                 }
1909                         }
1910                 }
1911         }
1912
1913         return status;
1914 }
1915
1916 /* reset vpaths */
1917 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1918 {
1919         enum vxge_hw_status status = VXGE_HW_OK;
1920         struct vxge_vpath *vpath;
1921         int i;
1922
1923         for (i = 0; i < vdev->no_of_vpath; i++) {
1924                 vpath = &vdev->vpaths[i];
1925                 if (vpath->handle) {
1926                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1927                                 if (is_vxge_card_up(vdev) &&
1928                                         vxge_hw_vpath_recover_from_reset(
1929                                                 vpath->handle) != VXGE_HW_OK) {
1930                                         vxge_debug_init(VXGE_ERR,
1931                                                 "vxge_hw_vpath_recover_"
1932                                                 "from_reset failed for vpath: "
1933                                                 "%d", i);
1934                                         return status;
1935                                 }
1936                         } else {
1937                                 vxge_debug_init(VXGE_ERR,
1938                                         "vxge_hw_vpath_reset failed for "
1939                                         "vpath:%d", i);
1940                                         return status;
1941                         }
1942                 }
1943         }
1944
1945         return status;
1946 }
1947
1948 /* close vpaths */
1949 void vxge_close_vpaths(struct vxgedev *vdev, int index)
1950 {
1951         struct vxge_vpath *vpath;
1952         int i;
1953
1954         for (i = index; i < vdev->no_of_vpath; i++) {
1955                 vpath = &vdev->vpaths[i];
1956
1957                 if (vpath->handle && vpath->is_open) {
1958                         vxge_hw_vpath_close(vpath->handle);
1959                         vdev->stats.vpaths_open--;
1960                 }
1961                 vpath->is_open = 0;
1962                 vpath->handle = NULL;
1963         }
1964 }
1965
1966 /* open vpaths */
1967 int vxge_open_vpaths(struct vxgedev *vdev)
1968 {
1969         struct vxge_hw_vpath_attr attr;
1970         enum vxge_hw_status status;
1971         struct vxge_vpath *vpath;
1972         u32 vp_id = 0;
1973         int i;
1974
1975         for (i = 0; i < vdev->no_of_vpath; i++) {
1976                 vpath = &vdev->vpaths[i];
1977
1978                 vxge_assert(vpath->is_configured);
1979                 attr.vp_id = vpath->device_id;
1980                 attr.fifo_attr.callback = vxge_xmit_compl;
1981                 attr.fifo_attr.txdl_term = vxge_tx_term;
1982                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
1983                 attr.fifo_attr.userdata = &vpath->fifo;
1984
1985                 attr.ring_attr.callback = vxge_rx_1b_compl;
1986                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
1987                 attr.ring_attr.rxd_term = vxge_rx_term;
1988                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
1989                 attr.ring_attr.userdata = &vpath->ring;
1990
1991                 vpath->ring.ndev = vdev->ndev;
1992                 vpath->ring.pdev = vdev->pdev;
1993                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
1994                 if (status == VXGE_HW_OK) {
1995                         vpath->fifo.handle =
1996                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
1997                         vpath->ring.handle =
1998                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
1999                         vpath->fifo.tx_steering_type =
2000                                 vdev->config.tx_steering_type;
2001                         vpath->fifo.ndev = vdev->ndev;
2002                         vpath->fifo.pdev = vdev->pdev;
2003                         if (vdev->config.tx_steering_type)
2004                                 vpath->fifo.txq =
2005                                         netdev_get_tx_queue(vdev->ndev, i);
2006                         else
2007                                 vpath->fifo.txq =
2008                                         netdev_get_tx_queue(vdev->ndev, 0);
2009                         vpath->fifo.indicate_max_pkts =
2010                                 vdev->config.fifo_indicate_max_pkts;
2011                         vpath->ring.rx_vector_no = 0;
2012                         vpath->ring.rx_csum = vdev->rx_csum;
2013                         vpath->is_open = 1;
2014                         vdev->vp_handles[i] = vpath->handle;
2015                         vpath->ring.gro_enable = vdev->config.gro_enable;
2016                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2017                         vdev->stats.vpaths_open++;
2018                 } else {
2019                         vdev->stats.vpath_open_fail++;
2020                         vxge_debug_init(VXGE_ERR,
2021                                 "%s: vpath: %d failed to open "
2022                                 "with status: %d",
2023                             vdev->ndev->name, vpath->device_id,
2024                                 status);
2025                         vxge_close_vpaths(vdev, 0);
2026                         return -EPERM;
2027                 }
2028
2029                 vp_id = vpath->handle->vpath->vp_id;
2030                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2031         }
2032         return VXGE_HW_OK;
2033 }
2034
2035 /*
2036  *  vxge_isr_napi
2037  *  @irq: the irq of the device.
2038  *  @dev_id: a void pointer to the hldev structure of the Titan device
2039  *  @ptregs: pointer to the registers pushed on the stack.
2040  *
2041  *  This function is the ISR handler of the device when napi is enabled. It
2042  *  identifies the reason for the interrupt and calls the relevant service
2043  *  routines.
2044  */
2045 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2046 {
2047         struct net_device *dev;
2048         struct __vxge_hw_device *hldev;
2049         u64 reason;
2050         enum vxge_hw_status status;
2051         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2052
2053         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2054
2055         dev = vdev->ndev;
2056         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2057
2058         if (pci_channel_offline(vdev->pdev))
2059                 return IRQ_NONE;
2060
2061         if (unlikely(!is_vxge_card_up(vdev)))
2062                 return IRQ_NONE;
2063
2064         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2065                         &reason);
2066         if (status == VXGE_HW_OK) {
2067                 vxge_hw_device_mask_all(hldev);
2068
2069                 if (reason &
2070                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2071                         vdev->vpaths_deployed >>
2072                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2073
2074                         vxge_hw_device_clear_tx_rx(hldev);
2075                         napi_schedule(&vdev->napi);
2076                         vxge_debug_intr(VXGE_TRACE,
2077                                 "%s:%d  Exiting...", __func__, __LINE__);
2078                         return IRQ_HANDLED;
2079                 } else
2080                         vxge_hw_device_unmask_all(hldev);
2081         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2082                 (status == VXGE_HW_ERR_CRITICAL) ||
2083                 (status == VXGE_HW_ERR_FIFO))) {
2084                 vxge_hw_device_mask_all(hldev);
2085                 vxge_hw_device_flush_io(hldev);
2086                 return IRQ_HANDLED;
2087         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2088                 return IRQ_HANDLED;
2089
2090         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2091         return IRQ_NONE;
2092 }
2093
2094 #ifdef CONFIG_PCI_MSI
2095
2096 static irqreturn_t
2097 vxge_tx_msix_handle(int irq, void *dev_id)
2098 {
2099         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2100
2101         VXGE_COMPLETE_VPATH_TX(fifo);
2102
2103         return IRQ_HANDLED;
2104 }
2105
2106 static irqreturn_t
2107 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2108 {
2109         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2110
2111         /* MSIX_IDX for Rx is 1 */
2112         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2113                                         ring->rx_vector_no);
2114
2115         napi_schedule(&ring->napi);
2116         return IRQ_HANDLED;
2117 }
2118
2119 static irqreturn_t
2120 vxge_alarm_msix_handle(int irq, void *dev_id)
2121 {
2122         int i;
2123         enum vxge_hw_status status;
2124         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2125         struct vxgedev *vdev = vpath->vdev;
2126         int msix_id = (vpath->handle->vpath->vp_id *
2127                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2128
2129         for (i = 0; i < vdev->no_of_vpath; i++) {
2130                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2131
2132                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2133                         vdev->exec_mode);
2134                 if (status == VXGE_HW_OK) {
2135
2136                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2137                                         msix_id);
2138                         continue;
2139                 }
2140                 vxge_debug_intr(VXGE_ERR,
2141                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2142                         VXGE_DRIVER_NAME, status);
2143         }
2144         return IRQ_HANDLED;
2145 }
2146
2147 static int vxge_alloc_msix(struct vxgedev *vdev)
2148 {
2149         int j, i, ret = 0;
2150         int msix_intr_vect = 0, temp;
2151         vdev->intr_cnt = 0;
2152
2153 start:
2154         /* Tx/Rx MSIX Vectors count */
2155         vdev->intr_cnt = vdev->no_of_vpath * 2;
2156
2157         /* Alarm MSIX Vectors count */
2158         vdev->intr_cnt++;
2159
2160         vdev->entries = kzalloc(vdev->intr_cnt * sizeof(struct msix_entry),
2161                                                 GFP_KERNEL);
2162         if (!vdev->entries) {
2163                 vxge_debug_init(VXGE_ERR,
2164                         "%s: memory allocation failed",
2165                         VXGE_DRIVER_NAME);
2166                 ret = -ENOMEM;
2167                 goto alloc_entries_failed;
2168         }
2169
2170         vdev->vxge_entries =
2171                 kzalloc(vdev->intr_cnt * sizeof(struct vxge_msix_entry),
2172                                 GFP_KERNEL);
2173         if (!vdev->vxge_entries) {
2174                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2175                         VXGE_DRIVER_NAME);
2176                 ret = -ENOMEM;
2177                 goto alloc_vxge_entries_failed;
2178         }
2179
2180         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2181
2182                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2183
2184                 /* Initialize the fifo vector */
2185                 vdev->entries[j].entry = msix_intr_vect;
2186                 vdev->vxge_entries[j].entry = msix_intr_vect;
2187                 vdev->vxge_entries[j].in_use = 0;
2188                 j++;
2189
2190                 /* Initialize the ring vector */
2191                 vdev->entries[j].entry = msix_intr_vect + 1;
2192                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2193                 vdev->vxge_entries[j].in_use = 0;
2194                 j++;
2195         }
2196
2197         /* Initialize the alarm vector */
2198         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2199         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2200         vdev->vxge_entries[j].in_use = 0;
2201
2202         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2203         if (ret > 0) {
2204                 vxge_debug_init(VXGE_ERR,
2205                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2206                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2207                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2208                         ret = -ENODEV;
2209                         goto enable_msix_failed;
2210                 }
2211
2212                 kfree(vdev->entries);
2213                 kfree(vdev->vxge_entries);
2214                 vdev->entries = NULL;
2215                 vdev->vxge_entries = NULL;
2216                 /* Try with less no of vector by reducing no of vpaths count */
2217                 temp = (ret - 1)/2;
2218                 vxge_close_vpaths(vdev, temp);
2219                 vdev->no_of_vpath = temp;
2220                 goto start;
2221         } else if (ret < 0) {
2222                 ret = -ENODEV;
2223                 goto enable_msix_failed;
2224         }
2225         return 0;
2226
2227 enable_msix_failed:
2228         kfree(vdev->vxge_entries);
2229 alloc_vxge_entries_failed:
2230         kfree(vdev->entries);
2231 alloc_entries_failed:
2232         return ret;
2233 }
2234
2235 static int vxge_enable_msix(struct vxgedev *vdev)
2236 {
2237
2238         int i, ret = 0;
2239         /* 0 - Tx, 1 - Rx  */
2240         int tim_msix_id[4] = {0, 1, 0, 0};
2241
2242         vdev->intr_cnt = 0;
2243
2244         /* allocate msix vectors */
2245         ret = vxge_alloc_msix(vdev);
2246         if (!ret) {
2247                 for (i = 0; i < vdev->no_of_vpath; i++) {
2248                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2249
2250                         /* If fifo or ring are not enabled, the MSIX vector for
2251                          * it should be set to 0.
2252                          */
2253                         vpath->ring.rx_vector_no = (vpath->device_id *
2254                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2255
2256                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2257                                                VXGE_ALARM_MSIX_ID);
2258                 }
2259         }
2260
2261         return ret;
2262 }
2263
2264 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2265 {
2266         int intr_cnt;
2267
2268         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2269                 intr_cnt++) {
2270                 if (vdev->vxge_entries[intr_cnt].in_use) {
2271                         synchronize_irq(vdev->entries[intr_cnt].vector);
2272                         free_irq(vdev->entries[intr_cnt].vector,
2273                                 vdev->vxge_entries[intr_cnt].arg);
2274                         vdev->vxge_entries[intr_cnt].in_use = 0;
2275                 }
2276         }
2277
2278         kfree(vdev->entries);
2279         kfree(vdev->vxge_entries);
2280         vdev->entries = NULL;
2281         vdev->vxge_entries = NULL;
2282
2283         if (vdev->config.intr_type == MSI_X)
2284                 pci_disable_msix(vdev->pdev);
2285 }
2286 #endif
2287
2288 static void vxge_rem_isr(struct vxgedev *vdev)
2289 {
2290         struct __vxge_hw_device  *hldev;
2291         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2292
2293 #ifdef CONFIG_PCI_MSI
2294         if (vdev->config.intr_type == MSI_X) {
2295                 vxge_rem_msix_isr(vdev);
2296         } else
2297 #endif
2298         if (vdev->config.intr_type == INTA) {
2299                         synchronize_irq(vdev->pdev->irq);
2300                         free_irq(vdev->pdev->irq, vdev);
2301         }
2302 }
2303
2304 static int vxge_add_isr(struct vxgedev *vdev)
2305 {
2306         int ret = 0;
2307 #ifdef CONFIG_PCI_MSI
2308         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2309         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2310
2311         if (vdev->config.intr_type == MSI_X)
2312                 ret = vxge_enable_msix(vdev);
2313
2314         if (ret) {
2315                 vxge_debug_init(VXGE_ERR,
2316                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2317                 vxge_debug_init(VXGE_ERR,
2318                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2319                 vdev->config.intr_type = INTA;
2320         }
2321
2322         if (vdev->config.intr_type == MSI_X) {
2323                 for (intr_idx = 0;
2324                      intr_idx < (vdev->no_of_vpath *
2325                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2326
2327                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2328                         irq_req = 0;
2329
2330                         switch (msix_idx) {
2331                         case 0:
2332                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2333                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2334                                         vdev->ndev->name,
2335                                         vdev->entries[intr_cnt].entry,
2336                                         pci_fun, vp_idx);
2337                                 ret = request_irq(
2338                                     vdev->entries[intr_cnt].vector,
2339                                         vxge_tx_msix_handle, 0,
2340                                         vdev->desc[intr_cnt],
2341                                         &vdev->vpaths[vp_idx].fifo);
2342                                         vdev->vxge_entries[intr_cnt].arg =
2343                                                 &vdev->vpaths[vp_idx].fifo;
2344                                 irq_req = 1;
2345                                 break;
2346                         case 1:
2347                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2348                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2349                                         vdev->ndev->name,
2350                                         vdev->entries[intr_cnt].entry,
2351                                         pci_fun, vp_idx);
2352                                 ret = request_irq(
2353                                     vdev->entries[intr_cnt].vector,
2354                                         vxge_rx_msix_napi_handle,
2355                                         0,
2356                                         vdev->desc[intr_cnt],
2357                                         &vdev->vpaths[vp_idx].ring);
2358                                         vdev->vxge_entries[intr_cnt].arg =
2359                                                 &vdev->vpaths[vp_idx].ring;
2360                                 irq_req = 1;
2361                                 break;
2362                         }
2363
2364                         if (ret) {
2365                                 vxge_debug_init(VXGE_ERR,
2366                                         "%s: MSIX - %d  Registration failed",
2367                                         vdev->ndev->name, intr_cnt);
2368                                 vxge_rem_msix_isr(vdev);
2369                                 vdev->config.intr_type = INTA;
2370                                 vxge_debug_init(VXGE_ERR,
2371                                         "%s: Defaulting to INTA"
2372                                         , vdev->ndev->name);
2373                                         goto INTA_MODE;
2374                         }
2375
2376                         if (irq_req) {
2377                                 /* We requested for this msix interrupt */
2378                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2379                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2380                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2381                                 vxge_hw_vpath_msix_unmask(
2382                                         vdev->vpaths[vp_idx].handle,
2383                                         msix_idx);
2384                                 intr_cnt++;
2385                         }
2386
2387                         /* Point to next vpath handler */
2388                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2389                             (vp_idx < (vdev->no_of_vpath - 1)))
2390                                 vp_idx++;
2391                 }
2392
2393                 intr_cnt = vdev->no_of_vpath * 2;
2394                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2395                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2396                         vdev->ndev->name,
2397                         vdev->entries[intr_cnt].entry,
2398                         pci_fun);
2399                 /* For Alarm interrupts */
2400                 ret = request_irq(vdev->entries[intr_cnt].vector,
2401                                         vxge_alarm_msix_handle, 0,
2402                                         vdev->desc[intr_cnt],
2403                                         &vdev->vpaths[0]);
2404                 if (ret) {
2405                         vxge_debug_init(VXGE_ERR,
2406                                 "%s: MSIX - %d Registration failed",
2407                                 vdev->ndev->name, intr_cnt);
2408                         vxge_rem_msix_isr(vdev);
2409                         vdev->config.intr_type = INTA;
2410                         vxge_debug_init(VXGE_ERR,
2411                                 "%s: Defaulting to INTA",
2412                                 vdev->ndev->name);
2413                                 goto INTA_MODE;
2414                 }
2415
2416                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2417                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2418                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2419                                         msix_idx);
2420                 vdev->vxge_entries[intr_cnt].in_use = 1;
2421                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2422         }
2423 INTA_MODE:
2424 #endif
2425
2426         if (vdev->config.intr_type == INTA) {
2427                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2428                         "%s:vxge:INTA", vdev->ndev->name);
2429                 vxge_hw_device_set_intr_type(vdev->devh,
2430                         VXGE_HW_INTR_MODE_IRQLINE);
2431                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2432                         vdev->vpaths[0].device_id);
2433                 ret = request_irq((int) vdev->pdev->irq,
2434                         vxge_isr_napi,
2435                         IRQF_SHARED, vdev->desc[0], vdev);
2436                 if (ret) {
2437                         vxge_debug_init(VXGE_ERR,
2438                                 "%s %s-%d: ISR registration failed",
2439                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2440                         return -ENODEV;
2441                 }
2442                 vxge_debug_init(VXGE_TRACE,
2443                         "new %s-%d line allocated",
2444                         "IRQ", vdev->pdev->irq);
2445         }
2446
2447         return VXGE_HW_OK;
2448 }
2449
2450 static void vxge_poll_vp_reset(unsigned long data)
2451 {
2452         struct vxgedev *vdev = (struct vxgedev *)data;
2453         int i, j = 0;
2454
2455         for (i = 0; i < vdev->no_of_vpath; i++) {
2456                 if (test_bit(i, &vdev->vp_reset)) {
2457                         vxge_reset_vpath(vdev, i);
2458                         j++;
2459                 }
2460         }
2461         if (j && (vdev->config.intr_type != MSI_X)) {
2462                 vxge_hw_device_unmask_all(vdev->devh);
2463                 vxge_hw_device_flush_io(vdev->devh);
2464         }
2465
2466         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2467 }
2468
2469 static void vxge_poll_vp_lockup(unsigned long data)
2470 {
2471         struct vxgedev *vdev = (struct vxgedev *)data;
2472         enum vxge_hw_status status = VXGE_HW_OK;
2473         struct vxge_vpath *vpath;
2474         struct vxge_ring *ring;
2475         int i;
2476
2477         for (i = 0; i < vdev->no_of_vpath; i++) {
2478                 ring = &vdev->vpaths[i].ring;
2479                 /* Did this vpath received any packets */
2480                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2481                         status = vxge_hw_vpath_check_leak(ring->handle);
2482
2483                         /* Did it received any packets last time */
2484                         if ((VXGE_HW_FAIL == status) &&
2485                                 (VXGE_HW_FAIL == ring->last_status)) {
2486
2487                                 /* schedule vpath reset */
2488                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2489                                         vpath = &vdev->vpaths[i];
2490
2491                                         /* disable interrupts for this vpath */
2492                                         vxge_vpath_intr_disable(vdev, i);
2493
2494                                         /* stop the queue for this vpath */
2495                                         netif_tx_stop_queue(vpath->fifo.txq);
2496                                         continue;
2497                                 }
2498                         }
2499                 }
2500                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2501                 ring->last_status = status;
2502         }
2503
2504         /* Check every 1 milli second */
2505         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2506 }
2507
2508 /**
2509  * vxge_open
2510  * @dev: pointer to the device structure.
2511  *
2512  * This function is the open entry point of the driver. It mainly calls a
2513  * function to allocate Rx buffers and inserts them into the buffer
2514  * descriptors and then enables the Rx part of the NIC.
2515  * Return value: '0' on success and an appropriate (-)ve integer as
2516  * defined in errno.h file on failure.
2517  */
2518 int
2519 vxge_open(struct net_device *dev)
2520 {
2521         enum vxge_hw_status status;
2522         struct vxgedev *vdev;
2523         struct __vxge_hw_device *hldev;
2524         struct vxge_vpath *vpath;
2525         int ret = 0;
2526         int i;
2527         u64 val64, function_mode;
2528         vxge_debug_entryexit(VXGE_TRACE,
2529                 "%s: %s:%d", dev->name, __func__, __LINE__);
2530
2531         vdev = (struct vxgedev *)netdev_priv(dev);
2532         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2533         function_mode = vdev->config.device_hw_info.function_mode;
2534
2535         /* make sure you have link off by default every time Nic is
2536          * initialized */
2537         netif_carrier_off(dev);
2538
2539         /* Open VPATHs */
2540         status = vxge_open_vpaths(vdev);
2541         if (status != VXGE_HW_OK) {
2542                 vxge_debug_init(VXGE_ERR,
2543                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2544                 ret = -EPERM;
2545                 goto out0;
2546         }
2547
2548         vdev->mtu = dev->mtu;
2549
2550         status = vxge_add_isr(vdev);
2551         if (status != VXGE_HW_OK) {
2552                 vxge_debug_init(VXGE_ERR,
2553                         "%s: fatal: ISR add failed", dev->name);
2554                 ret = -EPERM;
2555                 goto out1;
2556         }
2557
2558         if (vdev->config.intr_type != MSI_X) {
2559                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2560                         vdev->config.napi_weight);
2561                 napi_enable(&vdev->napi);
2562                 for (i = 0; i < vdev->no_of_vpath; i++) {
2563                         vpath = &vdev->vpaths[i];
2564                         vpath->ring.napi_p = &vdev->napi;
2565                 }
2566         } else {
2567                 for (i = 0; i < vdev->no_of_vpath; i++) {
2568                         vpath = &vdev->vpaths[i];
2569                         netif_napi_add(dev, &vpath->ring.napi,
2570                             vxge_poll_msix, vdev->config.napi_weight);
2571                         napi_enable(&vpath->ring.napi);
2572                         vpath->ring.napi_p = &vpath->ring.napi;
2573                 }
2574         }
2575
2576         /* configure RTH */
2577         if (vdev->config.rth_steering) {
2578                 status = vxge_rth_configure(vdev);
2579                 if (status != VXGE_HW_OK) {
2580                         vxge_debug_init(VXGE_ERR,
2581                                 "%s: fatal: RTH configuration failed",
2582                                 dev->name);
2583                         ret = -EPERM;
2584                         goto out2;
2585                 }
2586         }
2587
2588         for (i = 0; i < vdev->no_of_vpath; i++) {
2589                 vpath = &vdev->vpaths[i];
2590
2591                 /* set initial mtu before enabling the device */
2592                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2593                 if (status != VXGE_HW_OK) {
2594                         vxge_debug_init(VXGE_ERR,
2595                                 "%s: fatal: can not set new MTU", dev->name);
2596                         ret = -EPERM;
2597                         goto out2;
2598                 }
2599         }
2600
2601         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2602         vxge_debug_init(vdev->level_trace,
2603                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2604         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2605
2606         /* Restore the DA, VID table and also multicast and promiscuous mode
2607          * states
2608          */
2609         if (vdev->all_multi_flg) {
2610                 for (i = 0; i < vdev->no_of_vpath; i++) {
2611                         vpath = &vdev->vpaths[i];
2612                         vxge_restore_vpath_mac_addr(vpath);
2613                         vxge_restore_vpath_vid_table(vpath);
2614
2615                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2616                         if (status != VXGE_HW_OK)
2617                                 vxge_debug_init(VXGE_ERR,
2618                                         "%s:%d Enabling multicast failed",
2619                                         __func__, __LINE__);
2620                 }
2621         }
2622
2623         /* Enable vpath to sniff all unicast/multicast traffic that not
2624          * addressed to them. We allow promiscous mode for PF only
2625          */
2626
2627         val64 = 0;
2628         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2629                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2630
2631         vxge_hw_mgmt_reg_write(vdev->devh,
2632                 vxge_hw_mgmt_reg_type_mrpcim,
2633                 0,
2634                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2635                         rxmac_authorize_all_addr),
2636                 val64);
2637
2638         vxge_hw_mgmt_reg_write(vdev->devh,
2639                 vxge_hw_mgmt_reg_type_mrpcim,
2640                 0,
2641                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2642                         rxmac_authorize_all_vid),
2643                 val64);
2644
2645         vxge_set_multicast(dev);
2646
2647         /* Enabling Bcast and mcast for all vpath */
2648         for (i = 0; i < vdev->no_of_vpath; i++) {
2649                 vpath = &vdev->vpaths[i];
2650                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2651                 if (status != VXGE_HW_OK)
2652                         vxge_debug_init(VXGE_ERR,
2653                                 "%s : Can not enable bcast for vpath "
2654                                 "id %d", dev->name, i);
2655                 if (vdev->config.addr_learn_en) {
2656                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2657                         if (status != VXGE_HW_OK)
2658                                 vxge_debug_init(VXGE_ERR,
2659                                         "%s : Can not enable mcast for vpath "
2660                                         "id %d", dev->name, i);
2661                 }
2662         }
2663
2664         vxge_hw_device_setpause_data(vdev->devh, 0,
2665                 vdev->config.tx_pause_enable,
2666                 vdev->config.rx_pause_enable);
2667
2668         if (vdev->vp_reset_timer.function == NULL)
2669                 vxge_os_timer(vdev->vp_reset_timer,
2670                         vxge_poll_vp_reset, vdev, (HZ/2));
2671
2672         if (vdev->vp_lockup_timer.function == NULL)
2673                 vxge_os_timer(vdev->vp_lockup_timer,
2674                         vxge_poll_vp_lockup, vdev, (HZ/2));
2675
2676         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2677
2678         smp_wmb();
2679
2680         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2681                 netif_carrier_on(vdev->ndev);
2682                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2683                 vdev->stats.link_up++;
2684         }
2685
2686         vxge_hw_device_intr_enable(vdev->devh);
2687
2688         smp_wmb();
2689
2690         for (i = 0; i < vdev->no_of_vpath; i++) {
2691                 vpath = &vdev->vpaths[i];
2692
2693                 vxge_hw_vpath_enable(vpath->handle);
2694                 smp_wmb();
2695                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2696         }
2697
2698         netif_tx_start_all_queues(vdev->ndev);
2699         goto out0;
2700
2701 out2:
2702         vxge_rem_isr(vdev);
2703
2704         /* Disable napi */
2705         if (vdev->config.intr_type != MSI_X)
2706                 napi_disable(&vdev->napi);
2707         else {
2708                 for (i = 0; i < vdev->no_of_vpath; i++)
2709                         napi_disable(&vdev->vpaths[i].ring.napi);
2710         }
2711
2712 out1:
2713         vxge_close_vpaths(vdev, 0);
2714 out0:
2715         vxge_debug_entryexit(VXGE_TRACE,
2716                                 "%s: %s:%d  Exiting...",
2717                                 dev->name, __func__, __LINE__);
2718         return ret;
2719 }
2720
2721 /* Loop throught the mac address list and delete all the entries */
2722 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2723 {
2724
2725         struct list_head *entry, *next;
2726         if (list_empty(&vpath->mac_addr_list))
2727                 return;
2728
2729         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2730                 list_del(entry);
2731                 kfree((struct vxge_mac_addrs *)entry);
2732         }
2733 }
2734
2735 static void vxge_napi_del_all(struct vxgedev *vdev)
2736 {
2737         int i;
2738         if (vdev->config.intr_type != MSI_X)
2739                 netif_napi_del(&vdev->napi);
2740         else {
2741                 for (i = 0; i < vdev->no_of_vpath; i++)
2742                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2743         }
2744 }
2745
2746 int do_vxge_close(struct net_device *dev, int do_io)
2747 {
2748         enum vxge_hw_status status;
2749         struct vxgedev *vdev;
2750         struct __vxge_hw_device *hldev;
2751         int i;
2752         u64 val64, vpath_vector;
2753         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2754                 dev->name, __func__, __LINE__);
2755
2756         vdev = (struct vxgedev *)netdev_priv(dev);
2757         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2758
2759         if (unlikely(!is_vxge_card_up(vdev)))
2760                 return 0;
2761
2762         /* If vxge_handle_crit_err task is executing,
2763          * wait till it completes. */
2764         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2765                 msleep(50);
2766
2767         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2768         if (do_io) {
2769                 /* Put the vpath back in normal mode */
2770                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2771                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2772                                 vxge_hw_mgmt_reg_type_mrpcim,
2773                                 0,
2774                                 (ulong)offsetof(
2775                                         struct vxge_hw_mrpcim_reg,
2776                                         rts_mgr_cbasin_cfg),
2777                                 &val64);
2778
2779                 if (status == VXGE_HW_OK) {
2780                         val64 &= ~vpath_vector;
2781                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2782                                         vxge_hw_mgmt_reg_type_mrpcim,
2783                                         0,
2784                                         (ulong)offsetof(
2785                                                 struct vxge_hw_mrpcim_reg,
2786                                                 rts_mgr_cbasin_cfg),
2787                                         val64);
2788                 }
2789
2790                 /* Remove the function 0 from promiscous mode */
2791                 vxge_hw_mgmt_reg_write(vdev->devh,
2792                         vxge_hw_mgmt_reg_type_mrpcim,
2793                         0,
2794                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2795                                 rxmac_authorize_all_addr),
2796                         0);
2797
2798                 vxge_hw_mgmt_reg_write(vdev->devh,
2799                         vxge_hw_mgmt_reg_type_mrpcim,
2800                         0,
2801                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2802                                 rxmac_authorize_all_vid),
2803                         0);
2804
2805                 smp_wmb();
2806         }
2807         del_timer_sync(&vdev->vp_lockup_timer);
2808
2809         del_timer_sync(&vdev->vp_reset_timer);
2810
2811         /* Disable napi */
2812         if (vdev->config.intr_type != MSI_X)
2813                 napi_disable(&vdev->napi);
2814         else {
2815                 for (i = 0; i < vdev->no_of_vpath; i++)
2816                         napi_disable(&vdev->vpaths[i].ring.napi);
2817         }
2818
2819         netif_carrier_off(vdev->ndev);
2820         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2821         netif_tx_stop_all_queues(vdev->ndev);
2822
2823         /* Note that at this point xmit() is stopped by upper layer */
2824         if (do_io)
2825                 vxge_hw_device_intr_disable(vdev->devh);
2826
2827         mdelay(1000);
2828
2829         vxge_rem_isr(vdev);
2830
2831         vxge_napi_del_all(vdev);
2832
2833         if (do_io)
2834                 vxge_reset_all_vpaths(vdev);
2835
2836         vxge_close_vpaths(vdev, 0);
2837
2838         vxge_debug_entryexit(VXGE_TRACE,
2839                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2840
2841         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2842
2843         return 0;
2844 }
2845
2846 /**
2847  * vxge_close
2848  * @dev: device pointer.
2849  *
2850  * This is the stop entry point of the driver. It needs to undo exactly
2851  * whatever was done by the open entry point, thus it's usually referred to
2852  * as the close function.Among other things this function mainly stops the
2853  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2854  * Return value: '0' on success and an appropriate (-)ve integer as
2855  * defined in errno.h file on failure.
2856  */
2857 int
2858 vxge_close(struct net_device *dev)
2859 {
2860         do_vxge_close(dev, 1);
2861         return 0;
2862 }
2863
2864 /**
2865  * vxge_change_mtu
2866  * @dev: net device pointer.
2867  * @new_mtu :the new MTU size for the device.
2868  *
2869  * A driver entry point to change MTU size for the device. Before changing
2870  * the MTU the device must be stopped.
2871  */
2872 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2873 {
2874         struct vxgedev *vdev = netdev_priv(dev);
2875
2876         vxge_debug_entryexit(vdev->level_trace,
2877                 "%s:%d", __func__, __LINE__);
2878         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2879                 vxge_debug_init(vdev->level_err,
2880                         "%s: mtu size is invalid", dev->name);
2881                 return -EPERM;
2882         }
2883
2884         /* check if device is down already */
2885         if (unlikely(!is_vxge_card_up(vdev))) {
2886                 /* just store new value, will use later on open() */
2887                 dev->mtu = new_mtu;
2888                 vxge_debug_init(vdev->level_err,
2889                         "%s", "device is down on MTU change");
2890                 return 0;
2891         }
2892
2893         vxge_debug_init(vdev->level_trace,
2894                 "trying to apply new MTU %d", new_mtu);
2895
2896         if (vxge_close(dev))
2897                 return -EIO;
2898
2899         dev->mtu = new_mtu;
2900         vdev->mtu = new_mtu;
2901
2902         if (vxge_open(dev))
2903                 return -EIO;
2904
2905         vxge_debug_init(vdev->level_trace,
2906                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2907
2908         vxge_debug_entryexit(vdev->level_trace,
2909                 "%s:%d  Exiting...", __func__, __LINE__);
2910
2911         return 0;
2912 }
2913
2914 /**
2915  * vxge_get_stats
2916  * @dev: pointer to the device structure
2917  *
2918  * Updates the device statistics structure. This function updates the device
2919  * statistics structure in the net_device structure and returns a pointer
2920  * to the same.
2921  */
2922 static struct net_device_stats *
2923 vxge_get_stats(struct net_device *dev)
2924 {
2925         struct vxgedev *vdev;
2926         struct net_device_stats *net_stats;
2927         int k;
2928
2929         vdev = netdev_priv(dev);
2930
2931         net_stats = &vdev->stats.net_stats;
2932
2933         memset(net_stats, 0, sizeof(struct net_device_stats));
2934
2935         for (k = 0; k < vdev->no_of_vpath; k++) {
2936                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2937                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2938                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2939                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2940                 net_stats->rx_dropped +=
2941                         vdev->vpaths[k].ring.stats.rx_dropped;
2942
2943                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2944                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2945                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2946         }
2947
2948         return net_stats;
2949 }
2950
2951 /**
2952  * vxge_ioctl
2953  * @dev: Device pointer.
2954  * @ifr: An IOCTL specific structure, that can contain a pointer to
2955  *       a proprietary structure used to pass information to the driver.
2956  * @cmd: This is used to distinguish between the different commands that
2957  *       can be passed to the IOCTL functions.
2958  *
2959  * Entry point for the Ioctl.
2960  */
2961 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2962 {
2963         return -EOPNOTSUPP;
2964 }
2965
2966 /**
2967  * vxge_tx_watchdog
2968  * @dev: pointer to net device structure
2969  *
2970  * Watchdog for transmit side.
2971  * This function is triggered if the Tx Queue is stopped
2972  * for a pre-defined amount of time when the Interface is still up.
2973  */
2974 static void
2975 vxge_tx_watchdog(struct net_device *dev)
2976 {
2977         struct vxgedev *vdev;
2978
2979         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2980
2981         vdev = (struct vxgedev *)netdev_priv(dev);
2982
2983         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
2984
2985         vxge_reset(vdev);
2986         vxge_debug_entryexit(VXGE_TRACE,
2987                 "%s:%d  Exiting...", __func__, __LINE__);
2988 }
2989
2990 /**
2991  * vxge_vlan_rx_register
2992  * @dev: net device pointer.
2993  * @grp: vlan group
2994  *
2995  * Vlan group registration
2996  */
2997 static void
2998 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
2999 {
3000         struct vxgedev *vdev;
3001         struct vxge_vpath *vpath;
3002         int vp;
3003         u64 vid;
3004         enum vxge_hw_status status;
3005         int i;
3006
3007         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3008
3009         vdev = (struct vxgedev *)netdev_priv(dev);
3010
3011         vpath = &vdev->vpaths[0];
3012         if ((NULL == grp) && (vpath->is_open)) {
3013                 /* Get the first vlan */
3014                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3015
3016                 while (status == VXGE_HW_OK) {
3017
3018                         /* Delete this vlan from the vid table */
3019                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3020                                 vpath = &vdev->vpaths[vp];
3021                                 if (!vpath->is_open)
3022                                         continue;
3023
3024                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3025                         }
3026
3027                         /* Get the next vlan to be deleted */
3028                         vpath = &vdev->vpaths[0];
3029                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3030                 }
3031         }
3032
3033         vdev->vlgrp = grp;
3034
3035         for (i = 0; i < vdev->no_of_vpath; i++) {
3036                 if (vdev->vpaths[i].is_configured)
3037                         vdev->vpaths[i].ring.vlgrp = grp;
3038         }
3039
3040         vxge_debug_entryexit(VXGE_TRACE,
3041                 "%s:%d  Exiting...", __func__, __LINE__);
3042 }
3043
3044 /**
3045  * vxge_vlan_rx_add_vid
3046  * @dev: net device pointer.
3047  * @vid: vid
3048  *
3049  * Add the vlan id to the devices vlan id table
3050  */
3051 static void
3052 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3053 {
3054         struct vxgedev *vdev;
3055         struct vxge_vpath *vpath;
3056         int vp_id;
3057
3058         vdev = (struct vxgedev *)netdev_priv(dev);
3059
3060         /* Add these vlan to the vid table */
3061         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3062                 vpath = &vdev->vpaths[vp_id];
3063                 if (!vpath->is_open)
3064                         continue;
3065                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3066         }
3067 }
3068
3069 /**
3070  * vxge_vlan_rx_add_vid
3071  * @dev: net device pointer.
3072  * @vid: vid
3073  *
3074  * Remove the vlan id from the device's vlan id table
3075  */
3076 static void
3077 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3078 {
3079         struct vxgedev *vdev;
3080         struct vxge_vpath *vpath;
3081         int vp_id;
3082
3083         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3084
3085         vdev = (struct vxgedev *)netdev_priv(dev);
3086
3087         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3088
3089         /* Delete this vlan from the vid table */
3090         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3091                 vpath = &vdev->vpaths[vp_id];
3092                 if (!vpath->is_open)
3093                         continue;
3094                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3095         }
3096         vxge_debug_entryexit(VXGE_TRACE,
3097                 "%s:%d  Exiting...", __func__, __LINE__);
3098 }
3099
3100 static const struct net_device_ops vxge_netdev_ops = {
3101         .ndo_open               = vxge_open,
3102         .ndo_stop               = vxge_close,
3103         .ndo_get_stats          = vxge_get_stats,
3104         .ndo_start_xmit         = vxge_xmit,
3105         .ndo_validate_addr      = eth_validate_addr,
3106         .ndo_set_multicast_list = vxge_set_multicast,
3107
3108         .ndo_do_ioctl           = vxge_ioctl,
3109
3110         .ndo_set_mac_address    = vxge_set_mac_addr,
3111         .ndo_change_mtu         = vxge_change_mtu,
3112         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3113         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3114         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3115
3116         .ndo_tx_timeout         = vxge_tx_watchdog,
3117 #ifdef CONFIG_NET_POLL_CONTROLLER
3118         .ndo_poll_controller    = vxge_netpoll,
3119 #endif
3120 };
3121
3122 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3123                                    struct vxge_config *config,
3124                                    int high_dma, int no_of_vpath,
3125                                    struct vxgedev **vdev_out)
3126 {
3127         struct net_device *ndev;
3128         enum vxge_hw_status status = VXGE_HW_OK;
3129         struct vxgedev *vdev;
3130         int ret = 0, no_of_queue = 1;
3131         u64 stat;
3132
3133         *vdev_out = NULL;
3134         if (config->tx_steering_type)
3135                 no_of_queue = no_of_vpath;
3136
3137         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3138                         no_of_queue);
3139         if (ndev == NULL) {
3140                 vxge_debug_init(
3141                         vxge_hw_device_trace_level_get(hldev),
3142                 "%s : device allocation failed", __func__);
3143                 ret = -ENODEV;
3144                 goto _out0;
3145         }
3146
3147         vxge_debug_entryexit(
3148                 vxge_hw_device_trace_level_get(hldev),
3149                 "%s: %s:%d  Entering...",
3150                 ndev->name, __func__, __LINE__);
3151
3152         vdev = netdev_priv(ndev);
3153         memset(vdev, 0, sizeof(struct vxgedev));
3154
3155         vdev->ndev = ndev;
3156         vdev->devh = hldev;
3157         vdev->pdev = hldev->pdev;
3158         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3159         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3160
3161         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3162
3163         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3164                                 NETIF_F_HW_VLAN_FILTER;
3165         /*  Driver entry points */
3166         ndev->irq = vdev->pdev->irq;
3167         ndev->base_addr = (unsigned long) hldev->bar0;
3168
3169         ndev->netdev_ops = &vxge_netdev_ops;
3170
3171         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3172
3173         initialize_ethtool_ops(ndev);
3174
3175         /* Allocate memory for vpath */
3176         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3177                                 no_of_vpath, GFP_KERNEL);
3178         if (!vdev->vpaths) {
3179                 vxge_debug_init(VXGE_ERR,
3180                         "%s: vpath memory allocation failed",
3181                         vdev->ndev->name);
3182                 ret = -ENODEV;
3183                 goto _out1;
3184         }
3185
3186         ndev->features |= NETIF_F_SG;
3187
3188         ndev->features |= NETIF_F_HW_CSUM;
3189         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3190                 "%s : checksuming enabled", __func__);
3191
3192         if (high_dma) {
3193                 ndev->features |= NETIF_F_HIGHDMA;
3194                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3195                         "%s : using High DMA", __func__);
3196         }
3197
3198         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3199
3200         if (vdev->config.gro_enable)
3201                 ndev->features |= NETIF_F_GRO;
3202
3203         if (register_netdev(ndev)) {
3204                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3205                         "%s: %s : device registration failed!",
3206                         ndev->name, __func__);
3207                 ret = -ENODEV;
3208                 goto _out2;
3209         }
3210
3211         /*  Set the factory defined MAC address initially */
3212         ndev->addr_len = ETH_ALEN;
3213
3214         /* Make Link state as off at this point, when the Link change
3215          * interrupt comes the state will be automatically changed to
3216          * the right state.
3217          */
3218         netif_carrier_off(ndev);
3219
3220         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3221                 "%s: Ethernet device registered",
3222                 ndev->name);
3223
3224         *vdev_out = vdev;
3225
3226         /* Resetting the Device stats */
3227         status = vxge_hw_mrpcim_stats_access(
3228                                 hldev,
3229                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3230                                 0,
3231                                 0,
3232                                 &stat);
3233
3234         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3235                 vxge_debug_init(
3236                         vxge_hw_device_trace_level_get(hldev),
3237                         "%s: device stats clear returns"
3238                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3239
3240         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3241                 "%s: %s:%d  Exiting...",
3242                 ndev->name, __func__, __LINE__);
3243
3244         return ret;
3245 _out2:
3246         kfree(vdev->vpaths);
3247 _out1:
3248         free_netdev(ndev);
3249 _out0:
3250         return ret;
3251 }
3252
3253 /*
3254  * vxge_device_unregister
3255  *
3256  * This function will unregister and free network device
3257  */
3258 void
3259 vxge_device_unregister(struct __vxge_hw_device *hldev)
3260 {
3261         struct vxgedev *vdev;
3262         struct net_device *dev;
3263         char buf[IFNAMSIZ];
3264 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3265         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3266         u32 level_trace;
3267 #endif
3268
3269         dev = hldev->ndev;
3270         vdev = netdev_priv(dev);
3271 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3272         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3273         level_trace = vdev->level_trace;
3274 #endif
3275         vxge_debug_entryexit(level_trace,
3276                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3277
3278         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3279
3280         /* in 2.6 will call stop() if device is up */
3281         unregister_netdev(dev);
3282
3283         flush_scheduled_work();
3284
3285         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3286         vxge_debug_entryexit(level_trace,
3287                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3288 }
3289
3290 /*
3291  * vxge_callback_crit_err
3292  *
3293  * This function is called by the alarm handler in interrupt context.
3294  * Driver must analyze it based on the event type.
3295  */
3296 static void
3297 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3298                         enum vxge_hw_event type, u64 vp_id)
3299 {
3300         struct net_device *dev = hldev->ndev;
3301         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3302         struct vxge_vpath *vpath = NULL;
3303         int vpath_idx;
3304
3305         vxge_debug_entryexit(vdev->level_trace,
3306                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3307
3308         /* Note: This event type should be used for device wide
3309          * indications only - Serious errors, Slot freeze and critical errors
3310          */
3311         vdev->cric_err_event = type;
3312
3313         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3314                 vpath = &vdev->vpaths[vpath_idx];
3315                 if (vpath->device_id == vp_id)
3316                         break;
3317         }
3318
3319         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3320                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3321                         vxge_debug_init(VXGE_ERR,
3322                                 "%s: Slot is frozen", vdev->ndev->name);
3323                 } else if (type == VXGE_HW_EVENT_SERR) {
3324                         vxge_debug_init(VXGE_ERR,
3325                                 "%s: Encountered Serious Error",
3326                                 vdev->ndev->name);
3327                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3328                         vxge_debug_init(VXGE_ERR,
3329                                 "%s: Encountered Critical Error",
3330                                 vdev->ndev->name);
3331         }
3332
3333         if ((type == VXGE_HW_EVENT_SERR) ||
3334                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3335                 if (unlikely(vdev->exec_mode))
3336                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3337         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3338                 vxge_hw_device_mask_all(hldev);
3339                 if (unlikely(vdev->exec_mode))
3340                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3341         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3342                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3343
3344                 if (unlikely(vdev->exec_mode))
3345                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3346                 else {
3347                         /* check if this vpath is already set for reset */
3348                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3349
3350                                 /* disable interrupts for this vpath */
3351                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3352
3353                                 /* stop the queue for this vpath */
3354                                 netif_tx_stop_queue(vpath->fifo.txq);
3355                         }
3356                 }
3357         }
3358
3359         vxge_debug_entryexit(vdev->level_trace,
3360                 "%s: %s:%d  Exiting...",
3361                 vdev->ndev->name, __func__, __LINE__);
3362 }
3363
3364 static void verify_bandwidth(void)
3365 {
3366         int i, band_width, total = 0, equal_priority = 0;
3367
3368         /* 1. If user enters 0 for some fifo, give equal priority to all */
3369         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3370                 if (bw_percentage[i] == 0) {
3371                         equal_priority = 1;
3372                         break;
3373                 }
3374         }
3375
3376         if (!equal_priority) {
3377                 /* 2. If sum exceeds 100, give equal priority to all */
3378                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3379                         if (bw_percentage[i] == 0xFF)
3380                                 break;
3381
3382                         total += bw_percentage[i];
3383                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3384                                 equal_priority = 1;
3385                                 break;
3386                         }
3387                 }
3388         }
3389
3390         if (!equal_priority) {
3391                 /* Is all the bandwidth consumed? */
3392                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3393                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3394                                 /* Split rest of bw equally among next VPs*/
3395                                 band_width =
3396                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3397                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3398                                 if (band_width < 2) /* min of 2% */
3399                                         equal_priority = 1;
3400                                 else {
3401                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3402                                                 i++)
3403                                                 bw_percentage[i] =
3404                                                         band_width;
3405                                 }
3406                         }
3407                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3408                         equal_priority = 1;
3409         }
3410
3411         if (equal_priority) {
3412                 vxge_debug_init(VXGE_ERR,
3413                         "%s: Assigning equal bandwidth to all the vpaths",
3414                         VXGE_DRIVER_NAME);
3415                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3416                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3417                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3418                         bw_percentage[i] = bw_percentage[0];
3419         }
3420 }
3421
3422 /*
3423  * Vpath configuration
3424  */
3425 static int __devinit vxge_config_vpaths(
3426                         struct vxge_hw_device_config *device_config,
3427                         u64 vpath_mask, struct vxge_config *config_param)
3428 {
3429         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3430         u32 txdl_size, txdl_per_memblock;
3431
3432         temp = driver_config->vpath_per_dev;
3433         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3434                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3435                 /* No more CPU. Return vpath number as zero.*/
3436                 if (driver_config->g_no_cpus == -1)
3437                         return 0;
3438
3439                 if (!driver_config->g_no_cpus)
3440                         driver_config->g_no_cpus = num_online_cpus();
3441
3442                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3443                 if (!driver_config->vpath_per_dev)
3444                         driver_config->vpath_per_dev = 1;
3445
3446                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3447                         if (!vxge_bVALn(vpath_mask, i, 1))
3448                                 continue;
3449                         else
3450                                 default_no_vpath++;
3451                 if (default_no_vpath < driver_config->vpath_per_dev)
3452                         driver_config->vpath_per_dev = default_no_vpath;
3453
3454                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3455                                 (driver_config->vpath_per_dev * 2);
3456                 if (driver_config->g_no_cpus <= 0)
3457                         driver_config->g_no_cpus = -1;
3458         }
3459
3460         if (driver_config->vpath_per_dev == 1) {
3461                 vxge_debug_ll_config(VXGE_TRACE,
3462                         "%s: Disable tx and rx steering, "
3463                         "as single vpath is configured", VXGE_DRIVER_NAME);
3464                 config_param->rth_steering = NO_STEERING;
3465                 config_param->tx_steering_type = NO_STEERING;
3466                 device_config->rth_en = 0;
3467         }
3468
3469         /* configure bandwidth */
3470         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3471                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3472
3473         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3474                 device_config->vp_config[i].vp_id = i;
3475                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3476                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3477                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3478                                 vxge_debug_ll_config(VXGE_TRACE,
3479                                         "%s: vpath: %d is not available",
3480                                         VXGE_DRIVER_NAME, i);
3481                                 continue;
3482                         } else {
3483                                 vxge_debug_ll_config(VXGE_TRACE,
3484                                         "%s: vpath: %d available",
3485                                         VXGE_DRIVER_NAME, i);
3486                                 no_of_vpaths++;
3487                         }
3488                 } else {
3489                         vxge_debug_ll_config(VXGE_TRACE,
3490                                 "%s: vpath: %d is not configured, "
3491                                 "max_config_vpath exceeded",
3492                                 VXGE_DRIVER_NAME, i);
3493                         break;
3494                 }
3495
3496                 /* Configure Tx fifo's */
3497                 device_config->vp_config[i].fifo.enable =
3498                                                 VXGE_HW_FIFO_ENABLE;
3499                 device_config->vp_config[i].fifo.max_frags =
3500                                 MAX_SKB_FRAGS + 1;
3501                 device_config->vp_config[i].fifo.memblock_size =
3502                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3503
3504                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3505                                 sizeof(struct vxge_hw_fifo_txd);
3506                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3507
3508                 device_config->vp_config[i].fifo.fifo_blocks =
3509                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3510
3511                 device_config->vp_config[i].fifo.intr =
3512                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3513
3514                 /* Configure tti properties */
3515                 device_config->vp_config[i].tti.intr_enable =
3516                                         VXGE_HW_TIM_INTR_ENABLE;
3517
3518                 device_config->vp_config[i].tti.btimer_val =
3519                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3520
3521                 device_config->vp_config[i].tti.timer_ac_en =
3522                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3523
3524                 /* For msi-x with napi (each vector
3525                 has a handler of its own) -
3526                 Set CI to OFF for all vpaths */
3527                 device_config->vp_config[i].tti.timer_ci_en =
3528                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3529
3530                 device_config->vp_config[i].tti.timer_ri_en =
3531                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3532
3533                 device_config->vp_config[i].tti.util_sel =
3534                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3535
3536                 device_config->vp_config[i].tti.ltimer_val =
3537                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3538
3539                 device_config->vp_config[i].tti.rtimer_val =
3540                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3541
3542                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3543                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3544                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3545                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3546                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3547                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3548                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3549
3550                 /* Configure Rx rings */
3551                 device_config->vp_config[i].ring.enable  =
3552                                                 VXGE_HW_RING_ENABLE;
3553
3554                 device_config->vp_config[i].ring.ring_blocks  =
3555                                                 VXGE_HW_DEF_RING_BLOCKS;
3556                 device_config->vp_config[i].ring.buffer_mode =
3557                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3558                 device_config->vp_config[i].ring.rxds_limit  =
3559                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3560                 device_config->vp_config[i].ring.scatter_mode =
3561                                         VXGE_HW_RING_SCATTER_MODE_A;
3562
3563                 /* Configure rti properties */
3564                 device_config->vp_config[i].rti.intr_enable =
3565                                         VXGE_HW_TIM_INTR_ENABLE;
3566
3567                 device_config->vp_config[i].rti.btimer_val =
3568                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3569
3570                 device_config->vp_config[i].rti.timer_ac_en =
3571                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3572
3573                 device_config->vp_config[i].rti.timer_ci_en =
3574                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3575
3576                 device_config->vp_config[i].rti.timer_ri_en =
3577                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3578
3579                 device_config->vp_config[i].rti.util_sel =
3580                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3581
3582                 device_config->vp_config[i].rti.urange_a =
3583                                                 RTI_RX_URANGE_A;
3584                 device_config->vp_config[i].rti.urange_b =
3585                                                 RTI_RX_URANGE_B;
3586                 device_config->vp_config[i].rti.urange_c =
3587                                                 RTI_RX_URANGE_C;
3588                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3589                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3590                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3591                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3592
3593                 device_config->vp_config[i].rti.rtimer_val =
3594                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3595
3596                 device_config->vp_config[i].rti.ltimer_val =
3597                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3598
3599                 device_config->vp_config[i].rpa_strip_vlan_tag =
3600                         vlan_tag_strip;
3601         }
3602
3603         driver_config->vpath_per_dev = temp;
3604         return no_of_vpaths;
3605 }
3606
3607 /* initialize device configuratrions */
3608 static void __devinit vxge_device_config_init(
3609                                 struct vxge_hw_device_config *device_config,
3610                                 int *intr_type)
3611 {
3612         /* Used for CQRQ/SRQ. */
3613         device_config->dma_blockpool_initial =
3614                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3615
3616         device_config->dma_blockpool_max =
3617                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3618
3619         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3620                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3621
3622 #ifndef CONFIG_PCI_MSI
3623         vxge_debug_init(VXGE_ERR,
3624                 "%s: This Kernel does not support "
3625                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3626         *intr_type = INTA;
3627 #endif
3628
3629         /* Configure whether MSI-X or IRQL. */
3630         switch (*intr_type) {
3631         case INTA:
3632                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3633                 break;
3634
3635         case MSI_X:
3636                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3637                 break;
3638         }
3639         /* Timer period between device poll */
3640         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3641
3642         /* Configure mac based steering. */
3643         device_config->rts_mac_en = addr_learn_en;
3644
3645         /* Configure Vpaths */
3646         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3647
3648         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3649                         __func__);
3650         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3651                         device_config->dma_blockpool_initial);
3652         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3653                         device_config->dma_blockpool_max);
3654         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3655                         device_config->intr_mode);
3656         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3657                         device_config->device_poll_millis);
3658         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3659                         device_config->rts_mac_en);
3660         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3661                         device_config->rth_en);
3662         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3663                         device_config->rth_it_type);
3664 }
3665
3666 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3667 {
3668         int i;
3669
3670         vxge_debug_init(VXGE_TRACE,
3671                 "%s: %d Vpath(s) opened",
3672                 vdev->ndev->name, vdev->no_of_vpath);
3673
3674         switch (vdev->config.intr_type) {
3675         case INTA:
3676                 vxge_debug_init(VXGE_TRACE,
3677                         "%s: Interrupt type INTA", vdev->ndev->name);
3678                 break;
3679
3680         case MSI_X:
3681                 vxge_debug_init(VXGE_TRACE,
3682                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3683                 break;
3684         }
3685
3686         if (vdev->config.rth_steering) {
3687                 vxge_debug_init(VXGE_TRACE,
3688                         "%s: RTH steering enabled for TCP_IPV4",
3689                         vdev->ndev->name);
3690         } else {
3691                 vxge_debug_init(VXGE_TRACE,
3692                         "%s: RTH steering disabled", vdev->ndev->name);
3693         }
3694
3695         switch (vdev->config.tx_steering_type) {
3696         case NO_STEERING:
3697                 vxge_debug_init(VXGE_TRACE,
3698                         "%s: Tx steering disabled", vdev->ndev->name);
3699                 break;
3700         case TX_PRIORITY_STEERING:
3701                 vxge_debug_init(VXGE_TRACE,
3702                         "%s: Unsupported tx steering option",
3703                         vdev->ndev->name);
3704                 vxge_debug_init(VXGE_TRACE,
3705                         "%s: Tx steering disabled", vdev->ndev->name);
3706                 vdev->config.tx_steering_type = 0;
3707                 break;
3708         case TX_VLAN_STEERING:
3709                 vxge_debug_init(VXGE_TRACE,
3710                         "%s: Unsupported tx steering option",
3711                         vdev->ndev->name);
3712                 vxge_debug_init(VXGE_TRACE,
3713                         "%s: Tx steering disabled", vdev->ndev->name);
3714                 vdev->config.tx_steering_type = 0;
3715                 break;
3716         case TX_MULTIQ_STEERING:
3717                 vxge_debug_init(VXGE_TRACE,
3718                         "%s: Tx multiqueue steering enabled",
3719                         vdev->ndev->name);
3720                 break;
3721         case TX_PORT_STEERING:
3722                 vxge_debug_init(VXGE_TRACE,
3723                         "%s: Tx port steering enabled",
3724                         vdev->ndev->name);
3725                 break;
3726         default:
3727                 vxge_debug_init(VXGE_ERR,
3728                         "%s: Unsupported tx steering type",
3729                         vdev->ndev->name);
3730                 vxge_debug_init(VXGE_TRACE,
3731                         "%s: Tx steering disabled", vdev->ndev->name);
3732                 vdev->config.tx_steering_type = 0;
3733         }
3734
3735         if (vdev->config.gro_enable) {
3736                 vxge_debug_init(VXGE_ERR,
3737                         "%s: Generic receive offload enabled",
3738                         vdev->ndev->name);
3739         } else
3740                 vxge_debug_init(VXGE_TRACE,
3741                         "%s: Generic receive offload disabled",
3742                         vdev->ndev->name);
3743
3744         if (vdev->config.addr_learn_en)
3745                 vxge_debug_init(VXGE_TRACE,
3746                         "%s: MAC Address learning enabled", vdev->ndev->name);
3747
3748         vxge_debug_init(VXGE_TRACE,
3749                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3750
3751         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3752                 if (!vxge_bVALn(vpath_mask, i, 1))
3753                         continue;
3754                 vxge_debug_ll_config(VXGE_TRACE,
3755                         "%s: MTU size - %d", vdev->ndev->name,
3756                         ((struct __vxge_hw_device  *)(vdev->devh))->
3757                                 config.vp_config[i].mtu);
3758                 vxge_debug_init(VXGE_TRACE,
3759                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3760                         ((struct __vxge_hw_device  *)(vdev->devh))->
3761                                 config.vp_config[i].rpa_strip_vlan_tag
3762                         ? "Enabled" : "Disabled");
3763                 vxge_debug_init(VXGE_TRACE,
3764                         "%s: Ring blocks : %d", vdev->ndev->name,
3765                         ((struct __vxge_hw_device  *)(vdev->devh))->
3766                                 config.vp_config[i].ring.ring_blocks);
3767                 vxge_debug_init(VXGE_TRACE,
3768                         "%s: Fifo blocks : %d", vdev->ndev->name,
3769                         ((struct __vxge_hw_device  *)(vdev->devh))->
3770                                 config.vp_config[i].fifo.fifo_blocks);
3771                 vxge_debug_ll_config(VXGE_TRACE,
3772                         "%s: Max frags : %d", vdev->ndev->name,
3773                         ((struct __vxge_hw_device  *)(vdev->devh))->
3774                                 config.vp_config[i].fifo.max_frags);
3775                 break;
3776         }
3777 }
3778
3779 #ifdef CONFIG_PM
3780 /**
3781  * vxge_pm_suspend - vxge power management suspend entry point
3782  *
3783  */
3784 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3785 {
3786         return -ENOSYS;
3787 }
3788 /**
3789  * vxge_pm_resume - vxge power management resume entry point
3790  *
3791  */
3792 static int vxge_pm_resume(struct pci_dev *pdev)
3793 {
3794         return -ENOSYS;
3795 }
3796
3797 #endif
3798
3799 /**
3800  * vxge_io_error_detected - called when PCI error is detected
3801  * @pdev: Pointer to PCI device
3802  * @state: The current pci connection state
3803  *
3804  * This function is called after a PCI bus error affecting
3805  * this device has been detected.
3806  */
3807 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3808                                                 pci_channel_state_t state)
3809 {
3810         struct __vxge_hw_device  *hldev =
3811                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3812         struct net_device *netdev = hldev->ndev;
3813
3814         netif_device_detach(netdev);
3815
3816         if (state == pci_channel_io_perm_failure)
3817                 return PCI_ERS_RESULT_DISCONNECT;
3818
3819         if (netif_running(netdev)) {
3820                 /* Bring down the card, while avoiding PCI I/O */
3821                 do_vxge_close(netdev, 0);
3822         }
3823
3824         pci_disable_device(pdev);
3825
3826         return PCI_ERS_RESULT_NEED_RESET;
3827 }
3828
3829 /**
3830  * vxge_io_slot_reset - called after the pci bus has been reset.
3831  * @pdev: Pointer to PCI device
3832  *
3833  * Restart the card from scratch, as if from a cold-boot.
3834  * At this point, the card has exprienced a hard reset,
3835  * followed by fixups by BIOS, and has its config space
3836  * set up identically to what it was at cold boot.
3837  */
3838 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3839 {
3840         struct __vxge_hw_device  *hldev =
3841                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3842         struct net_device *netdev = hldev->ndev;
3843
3844         struct vxgedev *vdev = netdev_priv(netdev);
3845
3846         if (pci_enable_device(pdev)) {
3847                 printk(KERN_ERR "%s: "
3848                         "Cannot re-enable device after reset\n",
3849                         VXGE_DRIVER_NAME);
3850                 return PCI_ERS_RESULT_DISCONNECT;
3851         }
3852
3853         pci_set_master(pdev);
3854         vxge_reset(vdev);
3855
3856         return PCI_ERS_RESULT_RECOVERED;
3857 }
3858
3859 /**
3860  * vxge_io_resume - called when traffic can start flowing again.
3861  * @pdev: Pointer to PCI device
3862  *
3863  * This callback is called when the error recovery driver tells
3864  * us that its OK to resume normal operation.
3865  */
3866 static void vxge_io_resume(struct pci_dev *pdev)
3867 {
3868         struct __vxge_hw_device  *hldev =
3869                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3870         struct net_device *netdev = hldev->ndev;
3871
3872         if (netif_running(netdev)) {
3873                 if (vxge_open(netdev)) {
3874                         printk(KERN_ERR "%s: "
3875                                 "Can't bring device back up after reset\n",
3876                                 VXGE_DRIVER_NAME);
3877                         return;
3878                 }
3879         }
3880
3881         netif_device_attach(netdev);
3882 }
3883
3884 static inline u32 vxge_get_num_vfs(u64 function_mode)
3885 {
3886         u32 num_functions = 0;
3887
3888         switch (function_mode) {
3889         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3890         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3891                 num_functions = 8;
3892                 break;
3893         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3894                 num_functions = 1;
3895                 break;
3896         case VXGE_HW_FUNCTION_MODE_SRIOV:
3897         case VXGE_HW_FUNCTION_MODE_MRIOV:
3898         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3899                 num_functions = 17;
3900                 break;
3901         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3902                 num_functions = 4;
3903                 break;
3904         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3905                 num_functions = 2;
3906                 break;
3907         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
3908                 num_functions = 8; /* TODO */
3909                 break;
3910         }
3911         return num_functions;
3912 }
3913
3914 /**
3915  * vxge_probe
3916  * @pdev : structure containing the PCI related information of the device.
3917  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
3918  * Description:
3919  * This function is called when a new PCI device gets detected and initializes
3920  * it.
3921  * Return value:
3922  * returns 0 on success and negative on failure.
3923  *
3924  */
3925 static int __devinit
3926 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
3927 {
3928         struct __vxge_hw_device  *hldev;
3929         enum vxge_hw_status status;
3930         int ret;
3931         int high_dma = 0;
3932         u64 vpath_mask = 0;
3933         struct vxgedev *vdev;
3934         struct vxge_config *ll_config = NULL;
3935         struct vxge_hw_device_config *device_config = NULL;
3936         struct vxge_hw_device_attr attr;
3937         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
3938         u8 *macaddr;
3939         struct vxge_mac_addrs *entry;
3940         static int bus = -1, device = -1;
3941         u32 host_type;
3942         u8 new_device = 0;
3943         enum vxge_hw_status is_privileged;
3944         u32 function_mode;
3945         u32 num_vfs = 0;
3946
3947         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3948         attr.pdev = pdev;
3949
3950         /* In SRIOV-17 mode, functions of the same adapter
3951          * can be deployed on different buses */
3952         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
3953                 (device != PCI_SLOT(pdev->devfn))))
3954                 new_device = 1;
3955
3956         bus = pdev->bus->number;
3957         device = PCI_SLOT(pdev->devfn);
3958
3959         if (new_device) {
3960                 if (driver_config->config_dev_cnt &&
3961                    (driver_config->config_dev_cnt !=
3962                         driver_config->total_dev_cnt))
3963                         vxge_debug_init(VXGE_ERR,
3964                                 "%s: Configured %d of %d devices",
3965                                 VXGE_DRIVER_NAME,
3966                                 driver_config->config_dev_cnt,
3967                                 driver_config->total_dev_cnt);
3968                 driver_config->config_dev_cnt = 0;
3969                 driver_config->total_dev_cnt = 0;
3970         }
3971         /* Now making the CPU based no of vpath calculation
3972          * applicable for individual functions as well.
3973          */
3974         driver_config->g_no_cpus = 0;
3975         driver_config->vpath_per_dev = max_config_vpath;
3976
3977         driver_config->total_dev_cnt++;
3978         if (++driver_config->config_dev_cnt > max_config_dev) {
3979                 ret = 0;
3980                 goto _exit0;
3981         }
3982
3983         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
3984                 GFP_KERNEL);
3985         if (!device_config) {
3986                 ret = -ENOMEM;
3987                 vxge_debug_init(VXGE_ERR,
3988                         "device_config : malloc failed %s %d",
3989                         __FILE__, __LINE__);
3990                 goto _exit0;
3991         }
3992
3993         ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
3994         if (!ll_config) {
3995                 ret = -ENOMEM;
3996                 vxge_debug_init(VXGE_ERR,
3997                         "ll_config : malloc failed %s %d",
3998                         __FILE__, __LINE__);
3999                 goto _exit0;
4000         }
4001         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4002         ll_config->intr_type = MSI_X;
4003         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4004         ll_config->rth_steering = RTH_STEERING;
4005
4006         /* get the default configuration parameters */
4007         vxge_hw_device_config_default_get(device_config);
4008
4009         /* initialize configuration parameters */
4010         vxge_device_config_init(device_config, &ll_config->intr_type);
4011
4012         ret = pci_enable_device(pdev);
4013         if (ret) {
4014                 vxge_debug_init(VXGE_ERR,
4015                         "%s : can not enable PCI device", __func__);
4016                 goto _exit0;
4017         }
4018
4019         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4020                 vxge_debug_ll_config(VXGE_TRACE,
4021                         "%s : using 64bit DMA", __func__);
4022
4023                 high_dma = 1;
4024
4025                 if (pci_set_consistent_dma_mask(pdev,
4026                                                 DMA_BIT_MASK(64))) {
4027                         vxge_debug_init(VXGE_ERR,
4028                                 "%s : unable to obtain 64bit DMA for "
4029                                 "consistent allocations", __func__);
4030                         ret = -ENOMEM;
4031                         goto _exit1;
4032                 }
4033         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4034                 vxge_debug_ll_config(VXGE_TRACE,
4035                         "%s : using 32bit DMA", __func__);
4036         } else {
4037                 ret = -ENOMEM;
4038                 goto _exit1;
4039         }
4040
4041         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4042                 vxge_debug_init(VXGE_ERR,
4043                         "%s : request regions failed", __func__);
4044                 ret = -ENODEV;
4045                 goto _exit1;
4046         }
4047
4048         pci_set_master(pdev);
4049
4050         attr.bar0 = pci_ioremap_bar(pdev, 0);
4051         if (!attr.bar0) {
4052                 vxge_debug_init(VXGE_ERR,
4053                         "%s : cannot remap io memory bar0", __func__);
4054                 ret = -ENODEV;
4055                 goto _exit2;
4056         }
4057         vxge_debug_ll_config(VXGE_TRACE,
4058                 "pci ioremap bar0: %p:0x%llx",
4059                 attr.bar0,
4060                 (unsigned long long)pci_resource_start(pdev, 0));
4061
4062         status = vxge_hw_device_hw_info_get(attr.bar0,
4063                         &ll_config->device_hw_info);
4064         if (status != VXGE_HW_OK) {
4065                 vxge_debug_init(VXGE_ERR,
4066                         "%s: Reading of hardware info failed."
4067                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4068                 ret = -EINVAL;
4069                 goto _exit3;
4070         }
4071
4072         if (ll_config->device_hw_info.fw_version.major !=
4073                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4074                 vxge_debug_init(VXGE_ERR,
4075                         "%s: Incorrect firmware version."
4076                         "Please upgrade the firmware to version 1.x.x",
4077                         VXGE_DRIVER_NAME);
4078                 ret = -EINVAL;
4079                 goto _exit3;
4080         }
4081
4082         vpath_mask = ll_config->device_hw_info.vpath_mask;
4083         if (vpath_mask == 0) {
4084                 vxge_debug_ll_config(VXGE_TRACE,
4085                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4086                 ret = -EINVAL;
4087                 goto _exit3;
4088         }
4089
4090         vxge_debug_ll_config(VXGE_TRACE,
4091                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4092                 (unsigned long long)vpath_mask);
4093
4094         function_mode = ll_config->device_hw_info.function_mode;
4095         host_type = ll_config->device_hw_info.host_type;
4096         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4097                 ll_config->device_hw_info.func_id);
4098
4099         /* Check how many vpaths are available */
4100         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4101                 if (!((vpath_mask) & vxge_mBIT(i)))
4102                         continue;
4103                 max_vpath_supported++;
4104         }
4105
4106         if (new_device)
4107                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4108
4109         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4110         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4111                 (ll_config->intr_type != INTA) &&
4112                 (is_privileged == VXGE_HW_OK)) {
4113                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4114                         ? (max_config_dev - 1) : num_vfs);
4115                 if (ret)
4116                         vxge_debug_ll_config(VXGE_ERR,
4117                                 "Failed in enabling SRIOV mode: %d\n", ret);
4118         }
4119
4120         /*
4121          * Configure vpaths and get driver configured number of vpaths
4122          * which is less than or equal to the maximum vpaths per function.
4123          */
4124         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4125         if (!no_of_vpath) {
4126                 vxge_debug_ll_config(VXGE_ERR,
4127                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4128                 ret = 0;
4129                 goto _exit3;
4130         }
4131
4132         /* Setting driver callbacks */
4133         attr.uld_callbacks.link_up = vxge_callback_link_up;
4134         attr.uld_callbacks.link_down = vxge_callback_link_down;
4135         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4136
4137         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4138         if (status != VXGE_HW_OK) {
4139                 vxge_debug_init(VXGE_ERR,
4140                         "Failed to initialize device (%d)", status);
4141                         ret = -EINVAL;
4142                         goto _exit3;
4143         }
4144
4145         /* if FCS stripping is not disabled in MAC fail driver load */
4146         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4147                 vxge_debug_init(VXGE_ERR,
4148                         "%s: FCS stripping is not disabled in MAC"
4149                         " failing driver load", VXGE_DRIVER_NAME);
4150                 ret = -EINVAL;
4151                 goto _exit4;
4152         }
4153
4154         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4155
4156         /* set private device info */
4157         pci_set_drvdata(pdev, hldev);
4158
4159         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4160         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4161         ll_config->addr_learn_en = addr_learn_en;
4162         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4163         ll_config->rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4164         ll_config->rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4165         ll_config->rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4166         ll_config->rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4167         ll_config->rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4168         ll_config->rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4169         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4170         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4171         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4172
4173         if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4174                 &vdev)) {
4175                 ret = -EINVAL;
4176                 goto _exit4;
4177         }
4178
4179         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4180         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4181                 vxge_hw_device_trace_level_get(hldev));
4182
4183         /* set private HW device info */
4184         hldev->ndev = vdev->ndev;
4185         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4186         vdev->bar0 = attr.bar0;
4187         vdev->max_vpath_supported = max_vpath_supported;
4188         vdev->no_of_vpath = no_of_vpath;
4189
4190         /* Virtual Path count */
4191         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4192                 if (!vxge_bVALn(vpath_mask, i, 1))
4193                         continue;
4194                 if (j >= vdev->no_of_vpath)
4195                         break;
4196
4197                 vdev->vpaths[j].is_configured = 1;
4198                 vdev->vpaths[j].device_id = i;
4199                 vdev->vpaths[j].ring.driver_id = j;
4200                 vdev->vpaths[j].vdev = vdev;
4201                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4202                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4203                                 ll_config->device_hw_info.mac_addrs[i],
4204                                 ETH_ALEN);
4205
4206                 /* Initialize the mac address list header */
4207                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4208
4209                 vdev->vpaths[j].mac_addr_cnt = 0;
4210                 vdev->vpaths[j].mcast_addr_cnt = 0;
4211                 j++;
4212         }
4213         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4214         vdev->max_config_port = max_config_port;
4215
4216         vdev->vlan_tag_strip = vlan_tag_strip;
4217
4218         /* map the hashing selector table to the configured vpaths */
4219         for (i = 0; i < vdev->no_of_vpath; i++)
4220                 vdev->vpath_selector[i] = vpath_selector[i];
4221
4222         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4223
4224         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4225         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4226         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4227
4228         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4229                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4230
4231         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4232                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4233
4234         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4235                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4236
4237         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4238                 vdev->ndev->name, macaddr);
4239
4240         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4241                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4242
4243         vxge_debug_init(VXGE_TRACE,
4244                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4245                 ll_config->device_hw_info.fw_version.version,
4246                 ll_config->device_hw_info.fw_date.date);
4247
4248         if (new_device) {
4249                 switch (ll_config->device_hw_info.function_mode) {
4250                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4251                         vxge_debug_init(VXGE_TRACE,
4252                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4253                 break;
4254                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4255                         vxge_debug_init(VXGE_TRACE,
4256                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4257                 break;
4258                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4259                         vxge_debug_init(VXGE_TRACE,
4260                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4261                 break;
4262                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4263                         vxge_debug_init(VXGE_TRACE,
4264                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4265                 break;
4266                 }
4267         }
4268
4269         vxge_print_parm(vdev, vpath_mask);
4270
4271         /* Store the fw version for ethttool option */
4272         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4273         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4274         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4275
4276         /* Copy the station mac address to the list */
4277         for (i = 0; i < vdev->no_of_vpath; i++) {
4278                 entry = (struct vxge_mac_addrs *)
4279                                 kzalloc(sizeof(struct vxge_mac_addrs),
4280                                         GFP_KERNEL);
4281                 if (NULL == entry) {
4282                         vxge_debug_init(VXGE_ERR,
4283                                 "%s: mac_addr_list : memory allocation failed",
4284                                 vdev->ndev->name);
4285                         ret = -EPERM;
4286                         goto _exit5;
4287                 }
4288                 macaddr = (u8 *)&entry->macaddr;
4289                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4290                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4291                 vdev->vpaths[i].mac_addr_cnt = 1;
4292         }
4293
4294         kfree(device_config);
4295
4296         /*
4297          * INTA is shared in multi-function mode. This is unlike the INTA
4298          * implementation in MR mode, where each VH has its own INTA message.
4299          * - INTA is masked (disabled) as long as at least one function sets
4300          * its TITAN_MASK_ALL_INT.ALARM bit.
4301          * - INTA is unmasked (enabled) when all enabled functions have cleared
4302          * their own TITAN_MASK_ALL_INT.ALARM bit.
4303          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4304          * Though this driver leaves the top level interrupts unmasked while
4305          * leaving the required module interrupt bits masked on exit, there
4306          * could be a rougue driver around that does not follow this procedure
4307          * resulting in a failure to generate interrupts. The following code is
4308          * present to prevent such a failure.
4309          */
4310
4311         if (ll_config->device_hw_info.function_mode ==
4312                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4313                 if (vdev->config.intr_type == INTA)
4314                         vxge_hw_device_unmask_all(hldev);
4315
4316         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4317                 vdev->ndev->name, __func__, __LINE__);
4318
4319         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4320         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4321                 vxge_hw_device_trace_level_get(hldev));
4322
4323         kfree(ll_config);
4324         return 0;
4325
4326 _exit5:
4327         for (i = 0; i < vdev->no_of_vpath; i++)
4328                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4329
4330         vxge_device_unregister(hldev);
4331 _exit4:
4332         pci_disable_sriov(pdev);
4333         vxge_hw_device_terminate(hldev);
4334 _exit3:
4335         iounmap(attr.bar0);
4336 _exit2:
4337         pci_release_regions(pdev);
4338 _exit1:
4339         pci_disable_device(pdev);
4340 _exit0:
4341         kfree(ll_config);
4342         kfree(device_config);
4343         driver_config->config_dev_cnt--;
4344         pci_set_drvdata(pdev, NULL);
4345         return ret;
4346 }
4347
4348 /**
4349  * vxge_rem_nic - Free the PCI device
4350  * @pdev: structure containing the PCI related information of the device.
4351  * Description: This function is called by the Pci subsystem to release a
4352  * PCI device and free up all resource held up by the device.
4353  */
4354 static void __devexit
4355 vxge_remove(struct pci_dev *pdev)
4356 {
4357         struct __vxge_hw_device  *hldev;
4358         struct vxgedev *vdev = NULL;
4359         struct net_device *dev;
4360         int i = 0;
4361 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4362         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4363         u32 level_trace;
4364 #endif
4365
4366         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4367
4368         if (hldev == NULL)
4369                 return;
4370         dev = hldev->ndev;
4371         vdev = netdev_priv(dev);
4372
4373 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4374         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4375         level_trace = vdev->level_trace;
4376 #endif
4377         vxge_debug_entryexit(level_trace,
4378                 "%s:%d", __func__, __LINE__);
4379
4380         vxge_debug_init(level_trace,
4381                 "%s : removing PCI device...", __func__);
4382         vxge_device_unregister(hldev);
4383
4384         for (i = 0; i < vdev->no_of_vpath; i++) {
4385                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4386                 vdev->vpaths[i].mcast_addr_cnt = 0;
4387                 vdev->vpaths[i].mac_addr_cnt = 0;
4388         }
4389
4390         kfree(vdev->vpaths);
4391
4392         iounmap(vdev->bar0);
4393
4394         pci_disable_sriov(pdev);
4395
4396         /* we are safe to free it now */
4397         free_netdev(dev);
4398
4399         vxge_debug_init(level_trace,
4400                 "%s:%d  Device unregistered", __func__, __LINE__);
4401
4402         vxge_hw_device_terminate(hldev);
4403
4404         pci_disable_device(pdev);
4405         pci_release_regions(pdev);
4406         pci_set_drvdata(pdev, NULL);
4407         vxge_debug_entryexit(level_trace,
4408                 "%s:%d  Exiting...", __func__, __LINE__);
4409 }
4410
4411 static struct pci_error_handlers vxge_err_handler = {
4412         .error_detected = vxge_io_error_detected,
4413         .slot_reset = vxge_io_slot_reset,
4414         .resume = vxge_io_resume,
4415 };
4416
4417 static struct pci_driver vxge_driver = {
4418         .name = VXGE_DRIVER_NAME,
4419         .id_table = vxge_id_table,
4420         .probe = vxge_probe,
4421         .remove = __devexit_p(vxge_remove),
4422 #ifdef CONFIG_PM
4423         .suspend = vxge_pm_suspend,
4424         .resume = vxge_pm_resume,
4425 #endif
4426         .err_handler = &vxge_err_handler,
4427 };
4428
4429 static int __init
4430 vxge_starter(void)
4431 {
4432         int ret = 0;
4433         char version[32];
4434         snprintf(version, 32, "%s", DRV_VERSION);
4435
4436         printk(KERN_INFO "%s: Copyright(c) 2002-2010 Exar Corp.\n",
4437                 VXGE_DRIVER_NAME);
4438         printk(KERN_INFO "%s: Driver version: %s\n",
4439                         VXGE_DRIVER_NAME, version);
4440
4441         verify_bandwidth();
4442
4443         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4444         if (!driver_config)
4445                 return -ENOMEM;
4446
4447         ret = pci_register_driver(&vxge_driver);
4448
4449         if (driver_config->config_dev_cnt &&
4450            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4451                 vxge_debug_init(VXGE_ERR,
4452                         "%s: Configured %d of %d devices",
4453                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4454                         driver_config->total_dev_cnt);
4455
4456         if (ret)
4457                 kfree(driver_config);
4458
4459         return ret;
4460 }
4461
4462 static void __exit
4463 vxge_closer(void)
4464 {
4465         pci_unregister_driver(&vxge_driver);
4466         kfree(driver_config);
4467 }
4468 module_init(vxge_starter);
4469 module_exit(vxge_closer);