drivers/net/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2010 Exar Corp.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46 #include <linux/if_vlan.h>
  47 #include <linux/pci.h>
  48 #include <linux/slab.h>
  49 #include <linux/tcp.h>
  50 #include <net/ip.h>
  51 #include <linux/netdevice.h>
  52 #include <linux/etherdevice.h>
  53 #include "vxge-main.h"
  54 #include "vxge-reg.h"
  55
  56 MODULE_LICENSE("Dual BSD/GPL");
  57 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  58         "Virtualized Server Adapter");
  59
  60 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  61         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  62         PCI_ANY_ID},
  63         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  64         PCI_ANY_ID},
  65         {0}
  66 };
  67
  68 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  69
  70 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  71 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  72 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  73 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  74 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  75 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  76
  77 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  78                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  79 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  80         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  81 module_param_array(bw_percentage, uint, NULL, 0);
  82
  83 static struct vxge_drv_config *driver_config;
  84
  85 static inline int is_vxge_card_up(struct vxgedev *vdev)
  86 {
  87         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  88 }
  89
  90 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  91 {
  92         struct sk_buff **skb_ptr = NULL;
  93         struct sk_buff **temp;
  94 #define NR_SKB_COMPLETED 128
  95         struct sk_buff *completed[NR_SKB_COMPLETED];
  96         int more;
  97
  98         do {
  99                 more = 0;
 100                 skb_ptr = completed;
 101
 102                 if (__netif_tx_trylock(fifo->txq)) {
 103                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 104                                                 NR_SKB_COMPLETED, &more);
 105                         __netif_tx_unlock(fifo->txq);
 106                 }
 107
 108                 /* free SKBs */
 109                 for (temp = completed; temp != skb_ptr; temp++)
 110                         dev_kfree_skb_irq(*temp);
 111         } while (more);
 112 }
 113
 114 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 115 {
 116         int i;
 117
 118         /* Complete all transmits */
 119         for (i = 0; i < vdev->no_of_vpath; i++)
 120                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 121 }
 122
 123 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 124 {
 125         int i;
 126         struct vxge_ring *ring;
 127
 128         /* Complete all receives*/
 129         for (i = 0; i < vdev->no_of_vpath; i++) {
 130                 ring = &vdev->vpaths[i].ring;
 131                 vxge_hw_vpath_poll_rx(ring->handle);
 132         }
 133 }
 134
 135 /*
 136  * vxge_callback_link_up
 137  *
 138  * This function is called during interrupt context to notify link up state
 139  * change.
 140  */
 141 void
 142 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 143 {
 144         struct net_device *dev = hldev->ndev;
 145         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 146
 147         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 148                 vdev->ndev->name, __func__, __LINE__);
 149         netdev_notice(vdev->ndev, "Link Up\n");
 150         vdev->stats.link_up++;
 151
 152         netif_carrier_on(vdev->ndev);
 153         netif_tx_wake_all_queues(vdev->ndev);
 154
 155         vxge_debug_entryexit(VXGE_TRACE,
 156                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 157 }
 158
 159 /*
 160  * vxge_callback_link_down
 161  *
 162  * This function is called during interrupt context to notify link down state
 163  * change.
 164  */
 165 void
 166 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 167 {
 168         struct net_device *dev = hldev->ndev;
 169         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 170
 171         vxge_debug_entryexit(VXGE_TRACE,
 172                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 173         netdev_notice(vdev->ndev, "Link Down\n");
 174
 175         vdev->stats.link_down++;
 176         netif_carrier_off(vdev->ndev);
 177         netif_tx_stop_all_queues(vdev->ndev);
 178
 179         vxge_debug_entryexit(VXGE_TRACE,
 180                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 181 }
 182
 183 /*
 184  * vxge_rx_alloc
 185  *
 186  * Allocate SKB.
 187  */
 188 static struct sk_buff*
 189 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 190 {
 191         struct net_device    *dev;
 192         struct sk_buff       *skb;
 193         struct vxge_rx_priv *rx_priv;
 194
 195         dev = ring->ndev;
 196         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 197                 ring->ndev->name, __func__, __LINE__);
 198
 199         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 200
 201         /* try to allocate skb first. this one may fail */
 202         skb = netdev_alloc_skb(dev, skb_size +
 203         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 204         if (skb == NULL) {
 205                 vxge_debug_mem(VXGE_ERR,
 206                         "%s: out of memory to allocate SKB", dev->name);
 207                 ring->stats.skb_alloc_fail++;
 208                 return NULL;
 209         }
 210
 211         vxge_debug_mem(VXGE_TRACE,
 212                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 213                 __func__, __LINE__, skb);
 214
 215         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 216
 217         rx_priv->skb = skb;
 218         rx_priv->skb_data = NULL;
 219         rx_priv->data_size = skb_size;
 220         vxge_debug_entryexit(VXGE_TRACE,
 221                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 222
 223         return skb;
 224 }
 225
 226 /*
 227  * vxge_rx_map
 228  */
 229 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 230 {
 231         struct vxge_rx_priv *rx_priv;
 232         dma_addr_t dma_addr;
 233
 234         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 235                 ring->ndev->name, __func__, __LINE__);
 236         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 237
 238         rx_priv->skb_data = rx_priv->skb->data;
 239         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 240                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 241
 242         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 243                 ring->stats.pci_map_fail++;
 244                 return -EIO;
 245         }
 246         vxge_debug_mem(VXGE_TRACE,
 247                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 248                 ring->ndev->name, __func__, __LINE__,
 249                 (unsigned long long)dma_addr);
 250         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 251
 252         rx_priv->data_dma = dma_addr;
 253         vxge_debug_entryexit(VXGE_TRACE,
 254                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 255
 256         return 0;
 257 }
 258
 259 /*
 260  * vxge_rx_initial_replenish
 261  * Allocation of RxD as an initial replenish procedure.
 262  */
 263 static enum vxge_hw_status
 264 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 265 {
 266         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 267         struct vxge_rx_priv *rx_priv;
 268
 269         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 270                 ring->ndev->name, __func__, __LINE__);
 271         if (vxge_rx_alloc(dtrh, ring,
 272                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 273                 return VXGE_HW_FAIL;
 274
 275         if (vxge_rx_map(dtrh, ring)) {
 276                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 277                 dev_kfree_skb(rx_priv->skb);
 278
 279                 return VXGE_HW_FAIL;
 280         }
 281         vxge_debug_entryexit(VXGE_TRACE,
 282                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 283
 284         return VXGE_HW_OK;
 285 }
 286
 287 static inline void
 288 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 289                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 290 {
 291
 292         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 293                         ring->ndev->name, __func__, __LINE__);
 294         skb_record_rx_queue(skb, ring->driver_id);
 295         skb->protocol = eth_type_trans(skb, ring->ndev);
 296
 297         ring->stats.rx_frms++;
 298         ring->stats.rx_bytes += pkt_length;
 299
 300         if (skb->pkt_type == PACKET_MULTICAST)
 301                 ring->stats.rx_mcast++;
 302
 303         vxge_debug_rx(VXGE_TRACE,
 304                 "%s: %s:%d  skb protocol = %d",
 305                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 306
 307         if (ring->gro_enable) {
 308                 if (ring->vlgrp && ext_info->vlan &&
 309                         (ring->vlan_tag_strip ==
 310                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 311                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 312                                         ext_info->vlan, skb);
 313                 else
 314                         napi_gro_receive(ring->napi_p, skb);
 315         } else {
 316                 if (ring->vlgrp && vlan &&
 317                         (ring->vlan_tag_strip ==
 318                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 319                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 320                 else
 321                         netif_receive_skb(skb);
 322         }
 323         vxge_debug_entryexit(VXGE_TRACE,
 324                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 325 }
 326
 327 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 328                                     struct vxge_rx_priv *rx_priv)
 329 {
 330         pci_dma_sync_single_for_device(ring->pdev,
 331                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 332
 333         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 334         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 335 }
 336
 337 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 338                              void *post_dtr, struct __vxge_hw_ring *ringh)
 339 {
 340         int dtr_count = *dtr_cnt;
 341         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 342                 if (*first_dtr)
 343                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 344                 *first_dtr = post_dtr;
 345         } else
 346                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 347         dtr_count++;
 348         *dtr_cnt = dtr_count;
 349 }
 350
 351 /*
 352  * vxge_rx_1b_compl
 353  *
 354  * If the interrupt is because of a received frame or if the receive ring
 355  * contains fresh as yet un-processed frames, this function is called.
 356  */
 357 enum vxge_hw_status
 358 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 359                  u8 t_code, void *userdata)
 360 {
 361         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 362         struct  net_device *dev = ring->ndev;
 363         unsigned int dma_sizes;
 364         void *first_dtr = NULL;
 365         int dtr_cnt = 0;
 366         int data_size;
 367         dma_addr_t data_dma;
 368         int pkt_length;
 369         struct sk_buff *skb;
 370         struct vxge_rx_priv *rx_priv;
 371         struct vxge_hw_ring_rxd_info ext_info;
 372         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 373                 ring->ndev->name, __func__, __LINE__);
 374         ring->pkts_processed = 0;
 375
 376         vxge_hw_ring_replenish(ringh);
 377
 378         do {
 379                 prefetch((char *)dtr + L1_CACHE_BYTES);
 380                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 381                 skb = rx_priv->skb;
 382                 data_size = rx_priv->data_size;
 383                 data_dma = rx_priv->data_dma;
 384                 prefetch(rx_priv->skb_data);
 385
 386                 vxge_debug_rx(VXGE_TRACE,
 387                         "%s: %s:%d  skb = 0x%p",
 388                         ring->ndev->name, __func__, __LINE__, skb);
 389
 390                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 391                 pkt_length = dma_sizes;
 392
 393                 pkt_length -= ETH_FCS_LEN;
 394
 395                 vxge_debug_rx(VXGE_TRACE,
 396                         "%s: %s:%d  Packet Length = %d",
 397                         ring->ndev->name, __func__, __LINE__, pkt_length);
 398
 399                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 400
 401                 /* check skb validity */
 402                 vxge_assert(skb);
 403
 404                 prefetch((char *)skb + L1_CACHE_BYTES);
 405                 if (unlikely(t_code)) {
 406
 407                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 408                                 VXGE_HW_OK) {
 409
 410                                 ring->stats.rx_errors++;
 411                                 vxge_debug_rx(VXGE_TRACE,
 412                                         "%s: %s :%d Rx T_code is %d",
 413                                         ring->ndev->name, __func__,
 414                                         __LINE__, t_code);
 415
 416                                 /* If the t_code is not supported and if the
 417                                  * t_code is other than 0x5 (unparseable packet
 418                                  * such as unknown UPV6 header), Drop it !!!
 419                                  */
 420                                 vxge_re_pre_post(dtr, ring, rx_priv);
 421
 422                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 423                                 ring->stats.rx_dropped++;
 424                                 continue;
 425                         }
 426                 }
 427
 428                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 429
 430                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 431
 432                                 if (!vxge_rx_map(dtr, ring)) {
 433                                         skb_put(skb, pkt_length);
 434
 435                                         pci_unmap_single(ring->pdev, data_dma,
 436                                                 data_size, PCI_DMA_FROMDEVICE);
 437
 438                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 439                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 440                                                 ringh);
 441                                 } else {
 442                                         dev_kfree_skb(rx_priv->skb);
 443                                         rx_priv->skb = skb;
 444                                         rx_priv->data_size = data_size;
 445                                         vxge_re_pre_post(dtr, ring, rx_priv);
 446
 447                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 448                                                 ringh);
 449                                         ring->stats.rx_dropped++;
 450                                         break;
 451                                 }
 452                         } else {
 453                                 vxge_re_pre_post(dtr, ring, rx_priv);
 454
 455                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 456                                 ring->stats.rx_dropped++;
 457                                 break;
 458                         }
 459                 } else {
 460                         struct sk_buff *skb_up;
 461
 462                         skb_up = netdev_alloc_skb(dev, pkt_length +
 463                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 464                         if (skb_up != NULL) {
 465                                 skb_reserve(skb_up,
 466                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 467
 468                                 pci_dma_sync_single_for_cpu(ring->pdev,
 469                                         data_dma, data_size,
 470                                         PCI_DMA_FROMDEVICE);
 471
 472                                 vxge_debug_mem(VXGE_TRACE,
 473                                         "%s: %s:%d  skb_up = %p",
 474                                         ring->ndev->name, __func__,
 475                                         __LINE__, skb);
 476                                 memcpy(skb_up->data, skb->data, pkt_length);
 477
 478                                 vxge_re_pre_post(dtr, ring, rx_priv);
 479
 480                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 481                                         ringh);
 482                                 /* will netif_rx small SKB instead */
 483                                 skb = skb_up;
 484                                 skb_put(skb, pkt_length);
 485                         } else {
 486                                 vxge_re_pre_post(dtr, ring, rx_priv);
 487
 488                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 489                                 vxge_debug_rx(VXGE_ERR,
 490                                         "%s: vxge_rx_1b_compl: out of "
 491                                         "memory", dev->name);
 492                                 ring->stats.skb_alloc_fail++;
 493                                 break;
 494                         }
 495                 }
 496
 497                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 498                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 499                     ring->rx_csum && /* Offload Rx side CSUM */
 500                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 501                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 502                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 503                 else
 504                         skb_checksum_none_assert(skb);
 505
 506                 vxge_rx_complete(ring, skb, ext_info.vlan,
 507                         pkt_length, &ext_info);
 508
 509                 ring->budget--;
 510                 ring->pkts_processed++;
 511                 if (!ring->budget)
 512                         break;
 513
 514         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 515                 &t_code) == VXGE_HW_OK);
 516
 517         if (first_dtr)
 518                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 519
 520         vxge_debug_entryexit(VXGE_TRACE,
 521                                 "%s:%d  Exiting...",
 522                                 __func__, __LINE__);
 523         return VXGE_HW_OK;
 524 }
 525
 526 /*
 527  * vxge_xmit_compl
 528  *
 529  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 530  * this function is called. It identifies the last TxD whose buffer was
 531  * freed and frees all skbs whose data have already DMA'ed into the NICs
 532  * internal memory.
 533  */
 534 enum vxge_hw_status
 535 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 536                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 537                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 538 {
 539         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 540         struct sk_buff *skb, **done_skb = *skb_ptr;
 541         int pkt_cnt = 0;
 542
 543         vxge_debug_entryexit(VXGE_TRACE,
 544                 "%s:%d Entered....", __func__, __LINE__);
 545
 546         do {
 547                 int frg_cnt;
 548                 skb_frag_t *frag;
 549                 int i = 0, j;
 550                 struct vxge_tx_priv *txd_priv =
 551                         vxge_hw_fifo_txdl_private_get(dtr);
 552
 553                 skb = txd_priv->skb;
 554                 frg_cnt = skb_shinfo(skb)->nr_frags;
 555                 frag = &skb_shinfo(skb)->frags[0];
 556
 557                 vxge_debug_tx(VXGE_TRACE,
 558                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 559                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 560                                 __LINE__, fifo_hw, dtr, t_code);
 561                 /* check skb validity */
 562                 vxge_assert(skb);
 563                 vxge_debug_tx(VXGE_TRACE,
 564                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 565                         fifo->ndev->name, __func__, __LINE__,
 566                         skb, txd_priv, frg_cnt);
 567                 if (unlikely(t_code)) {
 568                         fifo->stats.tx_errors++;
 569                         vxge_debug_tx(VXGE_ERR,
 570                                 "%s: tx: dtr %p completed due to "
 571                                 "error t_code %01x", fifo->ndev->name,
 572                                 dtr, t_code);
 573                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 574                 }
 575
 576                 /*  for unfragmented skb */
 577                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 578                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 579
 580                 for (j = 0; j < frg_cnt; j++) {
 581                         pci_unmap_page(fifo->pdev,
 582                                         txd_priv->dma_buffers[i++],
 583                                         frag->size, PCI_DMA_TODEVICE);
 584                         frag += 1;
 585                 }
 586
 587                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 588
 589                 /* Updating the statistics block */
 590                 fifo->stats.tx_frms++;
 591                 fifo->stats.tx_bytes += skb->len;
 592
 593                 *done_skb++ = skb;
 594
 595                 if (--nr_skb <= 0) {
 596                         *more = 1;
 597                         break;
 598                 }
 599
 600                 pkt_cnt++;
 601                 if (pkt_cnt > fifo->indicate_max_pkts)
 602                         break;
 603
 604         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 605                                 &dtr, &t_code) == VXGE_HW_OK);
 606
 607         *skb_ptr = done_skb;
 608         if (netif_tx_queue_stopped(fifo->txq))
 609                 netif_tx_wake_queue(fifo->txq);
 610
 611         vxge_debug_entryexit(VXGE_TRACE,
 612                                 "%s: %s:%d  Exiting...",
 613                                 fifo->ndev->name, __func__, __LINE__);
 614         return VXGE_HW_OK;
 615 }
 616
 617 /* select a vpath to transmit the packet */
 618 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 619 {
 620         u16 queue_len, counter = 0;
 621         if (skb->protocol == htons(ETH_P_IP)) {
 622                 struct iphdr *ip;
 623                 struct tcphdr *th;
 624
 625                 ip = ip_hdr(skb);
 626
 627                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 628                         th = (struct tcphdr *)(((unsigned char *)ip) +
 629                                         ip->ihl*4);
 630
 631                         queue_len = vdev->no_of_vpath;
 632                         counter = (ntohs(th->source) +
 633                                 ntohs(th->dest)) &
 634                                 vdev->vpath_selector[queue_len - 1];
 635                         if (counter >= queue_len)
 636                                 counter = queue_len - 1;
 637                 }
 638         }
 639         return counter;
 640 }
 641
 642 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 643         struct vxge_vpath *vpath, u64 del_mac)
 644 {
 645         struct list_head *entry, *next;
 646         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 647                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 648                         return TRUE;
 649         }
 650         return FALSE;
 651 }
 652
 653 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 654 {
 655         struct macInfo mac_info;
 656         u8 *mac_address = NULL;
 657         u64 mac_addr = 0, vpath_vector = 0;
 658         int vpath_idx = 0;
 659         enum vxge_hw_status status = VXGE_HW_OK;
 660         struct vxge_vpath *vpath = NULL;
 661         struct __vxge_hw_device *hldev;
 662
 663         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 664
 665         mac_address = (u8 *)&mac_addr;
 666         memcpy(mac_address, mac_header, ETH_ALEN);
 667
 668         /* Is this mac address already in the list? */
 669         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 670                 vpath = &vdev->vpaths[vpath_idx];
 671                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 672                         return vpath_idx;
 673         }
 674
 675         memset(&mac_info, 0, sizeof(struct macInfo));
 676         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 677
 678         /* Any vpath has room to add mac address to its da table? */
 679         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 680                 vpath = &vdev->vpaths[vpath_idx];
 681                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 682                         /* Add this mac address to this vpath */
 683                         mac_info.vpath_no = vpath_idx;
 684                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 685                         status = vxge_add_mac_addr(vdev, &mac_info);
 686                         if (status != VXGE_HW_OK)
 687                                 return -EPERM;
 688                         return vpath_idx;
 689                 }
 690         }
 691
 692         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 693         vpath_idx = 0;
 694         mac_info.vpath_no = vpath_idx;
 695         /* Is the first vpath already selected as catch-basin ? */
 696         vpath = &vdev->vpaths[vpath_idx];
 697         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 698                 /* Add this mac address to this vpath */
 699                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 700                         return -EPERM;
 701                 return vpath_idx;
 702         }
 703
 704         /* Select first vpath as catch-basin */
 705         vpath_vector = vxge_mBIT(vpath->device_id);
 706         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 707                                 vxge_hw_mgmt_reg_type_mrpcim,
 708                                 0,
 709                                 (ulong)offsetof(
 710                                         struct vxge_hw_mrpcim_reg,
 711                                         rts_mgr_cbasin_cfg),
 712                                 vpath_vector);
 713         if (status != VXGE_HW_OK) {
 714                 vxge_debug_tx(VXGE_ERR,
 715                         "%s: Unable to set the vpath-%d in catch-basin mode",
 716                         VXGE_DRIVER_NAME, vpath->device_id);
 717                 return -EPERM;
 718         }
 719
 720         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 721                 return -EPERM;
 722
 723         return vpath_idx;
 724 }
 725
 726 /**
 727  * vxge_xmit
 728  * @skb : the socket buffer containing the Tx data.
 729  * @dev : device pointer.
 730  *
 731  * This function is the Tx entry point of the driver. Neterion NIC supports
 732  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 733 */
 734 static netdev_tx_t
 735 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 736 {
 737         struct vxge_fifo *fifo = NULL;
 738         void *dtr_priv;
 739         void *dtr = NULL;
 740         struct vxgedev *vdev = NULL;
 741         enum vxge_hw_status status;
 742         int frg_cnt, first_frg_len;
 743         skb_frag_t *frag;
 744         int i = 0, j = 0, avail;
 745         u64 dma_pointer;
 746         struct vxge_tx_priv *txdl_priv = NULL;
 747         struct __vxge_hw_fifo *fifo_hw;
 748         int offload_type;
 749         int vpath_no = 0;
 750
 751         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 752                         dev->name, __func__, __LINE__);
 753
 754         /* A buffer with no data will be dropped */
 755         if (unlikely(skb->len <= 0)) {
 756                 vxge_debug_tx(VXGE_ERR,
 757                         "%s: Buffer has no data..", dev->name);
 758                 dev_kfree_skb(skb);
 759                 return NETDEV_TX_OK;
 760         }
 761
 762         vdev = (struct vxgedev *)netdev_priv(dev);
 763
 764         if (unlikely(!is_vxge_card_up(vdev))) {
 765                 vxge_debug_tx(VXGE_ERR,
 766                         "%s: vdev not initialized", dev->name);
 767                 dev_kfree_skb(skb);
 768                 return NETDEV_TX_OK;
 769         }
 770
 771         if (vdev->config.addr_learn_en) {
 772                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 773                 if (vpath_no == -EPERM) {
 774                         vxge_debug_tx(VXGE_ERR,
 775                                 "%s: Failed to store the mac address",
 776                                 dev->name);
 777                         dev_kfree_skb(skb);
 778                         return NETDEV_TX_OK;
 779                 }
 780         }
 781
 782         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 783                 vpath_no = skb_get_queue_mapping(skb);
 784         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 785                 vpath_no = vxge_get_vpath_no(vdev, skb);
 786
 787         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 788
 789         if (vpath_no >= vdev->no_of_vpath)
 790                 vpath_no = 0;
 791
 792         fifo = &vdev->vpaths[vpath_no].fifo;
 793         fifo_hw = fifo->handle;
 794
 795         if (netif_tx_queue_stopped(fifo->txq))
 796                 return NETDEV_TX_BUSY;
 797
 798         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 799         if (avail == 0) {
 800                 vxge_debug_tx(VXGE_ERR,
 801                         "%s: No free TXDs available", dev->name);
 802                 fifo->stats.txd_not_free++;
 803                 goto _exit0;
 804         }
 805
 806         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 807          * completion will resume the queue.
 808          */
 809         if (avail == 1)
 810                 netif_tx_stop_queue(fifo->txq);
 811
 812         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 813         if (unlikely(status != VXGE_HW_OK)) {
 814                 vxge_debug_tx(VXGE_ERR,
 815                    "%s: Out of descriptors .", dev->name);
 816                 fifo->stats.txd_out_of_desc++;
 817                 goto _exit0;
 818         }
 819
 820         vxge_debug_tx(VXGE_TRACE,
 821                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 822                 dev->name, __func__, __LINE__,
 823                 fifo_hw, dtr, dtr_priv);
 824
 825         if (vlan_tx_tag_present(skb)) {
 826                 u16 vlan_tag = vlan_tx_tag_get(skb);
 827                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 828         }
 829
 830         first_frg_len = skb_headlen(skb);
 831
 832         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 833                                 PCI_DMA_TODEVICE);
 834
 835         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 836                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 837                 fifo->stats.pci_map_fail++;
 838                 goto _exit0;
 839         }
 840
 841         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 842         txdl_priv->skb = skb;
 843         txdl_priv->dma_buffers[j] = dma_pointer;
 844
 845         frg_cnt = skb_shinfo(skb)->nr_frags;
 846         vxge_debug_tx(VXGE_TRACE,
 847                         "%s: %s:%d skb = %p txdl_priv = %p "
 848                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 849                         __func__, __LINE__, skb, txdl_priv,
 850                         frg_cnt, (unsigned long long)dma_pointer);
 851
 852         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 853                 first_frg_len);
 854
 855         frag = &skb_shinfo(skb)->frags[0];
 856         for (i = 0; i < frg_cnt; i++) {
 857                 /* ignore 0 length fragment */
 858                 if (!frag->size)
 859                         continue;
 860
 861                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 862                                 frag->page_offset, frag->size,
 863                                 PCI_DMA_TODEVICE);
 864
 865                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 866                         goto _exit2;
 867                 vxge_debug_tx(VXGE_TRACE,
 868                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 869                                 dev->name, __func__, __LINE__, i,
 870                                 (unsigned long long)dma_pointer);
 871
 872                 txdl_priv->dma_buffers[j] = dma_pointer;
 873                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 874                                         frag->size);
 875                 frag += 1;
 876         }
 877
 878         offload_type = vxge_offload_type(skb);
 879
 880         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 881                 int mss = vxge_tcp_mss(skb);
 882                 if (mss) {
 883                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 884                                 dev->name, __func__, __LINE__, mss);
 885                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 886                 } else {
 887                         vxge_assert(skb->len <=
 888                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 889                         vxge_assert(0);
 890                         goto _exit1;
 891                 }
 892         }
 893
 894         if (skb->ip_summed == CHECKSUM_PARTIAL)
 895                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 896                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 897                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 898                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 899
 900         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 901
 902         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 903                 dev->name, __func__, __LINE__);
 904         return NETDEV_TX_OK;
 905
 906 _exit2:
 907         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 908 _exit1:
 909         j = 0;
 910         frag = &skb_shinfo(skb)->frags[0];
 911
 912         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 913                         skb_headlen(skb), PCI_DMA_TODEVICE);
 914
 915         for (; j < i; j++) {
 916                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 917                         frag->size, PCI_DMA_TODEVICE);
 918                 frag += 1;
 919         }
 920
 921         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 922 _exit0:
 923         netif_tx_stop_queue(fifo->txq);
 924         dev_kfree_skb(skb);
 925
 926         return NETDEV_TX_OK;
 927 }
 928
 929 /*
 930  * vxge_rx_term
 931  *
 932  * Function will be called by hw function to abort all outstanding receive
 933  * descriptors.
 934  */
 935 static void
 936 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
 937 {
 938         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 939         struct vxge_rx_priv *rx_priv =
 940                 vxge_hw_ring_rxd_private_get(dtrh);
 941
 942         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 943                         ring->ndev->name, __func__, __LINE__);
 944         if (state != VXGE_HW_RXD_STATE_POSTED)
 945                 return;
 946
 947         pci_unmap_single(ring->pdev, rx_priv->data_dma,
 948                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 949
 950         dev_kfree_skb(rx_priv->skb);
 951         rx_priv->skb_data = NULL;
 952
 953         vxge_debug_entryexit(VXGE_TRACE,
 954                 "%s: %s:%d  Exiting...",
 955                 ring->ndev->name, __func__, __LINE__);
 956 }
 957
 958 /*
 959  * vxge_tx_term
 960  *
 961  * Function will be called to abort all outstanding tx descriptors
 962  */
 963 static void
 964 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
 965 {
 966         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 967         skb_frag_t *frag;
 968         int i = 0, j, frg_cnt;
 969         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
 970         struct sk_buff *skb = txd_priv->skb;
 971
 972         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
 973
 974         if (state != VXGE_HW_TXDL_STATE_POSTED)
 975                 return;
 976
 977         /* check skb validity */
 978         vxge_assert(skb);
 979         frg_cnt = skb_shinfo(skb)->nr_frags;
 980         frag = &skb_shinfo(skb)->frags[0];
 981
 982         /*  for unfragmented skb */
 983         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 984                 skb_headlen(skb), PCI_DMA_TODEVICE);
 985
 986         for (j = 0; j < frg_cnt; j++) {
 987                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
 988                                frag->size, PCI_DMA_TODEVICE);
 989                 frag += 1;
 990         }
 991
 992         dev_kfree_skb(skb);
 993
 994         vxge_debug_entryexit(VXGE_TRACE,
 995                 "%s:%d  Exiting...", __func__, __LINE__);
 996 }
 997
 998 /**
 999  * vxge_set_multicast
1000  * @dev: pointer to the device structure
1001  *
1002  * Entry point for multicast address enable/disable
1003  * This function is a driver entry point which gets called by the kernel
1004  * whenever multicast addresses must be enabled/disabled. This also gets
1005  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1006  * determine, if multicast address must be enabled or if promiscuous mode
1007  * is to be disabled etc.
1008  */
1009 static void vxge_set_multicast(struct net_device *dev)
1010 {
1011         struct netdev_hw_addr *ha;
1012         struct vxgedev *vdev;
1013         int i, mcast_cnt = 0;
1014         struct __vxge_hw_device *hldev;
1015         struct vxge_vpath *vpath;
1016         enum vxge_hw_status status = VXGE_HW_OK;
1017         struct macInfo mac_info;
1018         int vpath_idx = 0;
1019         struct vxge_mac_addrs *mac_entry;
1020         struct list_head *list_head;
1021         struct list_head *entry, *next;
1022         u8 *mac_address = NULL;
1023
1024         vxge_debug_entryexit(VXGE_TRACE,
1025                 "%s:%d", __func__, __LINE__);
1026
1027         vdev = (struct vxgedev *)netdev_priv(dev);
1028         hldev = (struct __vxge_hw_device  *)vdev->devh;
1029
1030         if (unlikely(!is_vxge_card_up(vdev)))
1031                 return;
1032
1033         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1034                 for (i = 0; i < vdev->no_of_vpath; i++) {
1035                         vpath = &vdev->vpaths[i];
1036                         vxge_assert(vpath->is_open);
1037                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1038                         if (status != VXGE_HW_OK)
1039                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1040                                                 "multicast, status %d", status);
1041                         vdev->all_multi_flg = 1;
1042                 }
1043         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1044                 for (i = 0; i < vdev->no_of_vpath; i++) {
1045                         vpath = &vdev->vpaths[i];
1046                         vxge_assert(vpath->is_open);
1047                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1048                         if (status != VXGE_HW_OK)
1049                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1050                                                 "multicast, status %d", status);
1051                         vdev->all_multi_flg = 0;
1052                 }
1053         }
1054
1055
1056         if (!vdev->config.addr_learn_en) {
1057                 for (i = 0; i < vdev->no_of_vpath; i++) {
1058                         vpath = &vdev->vpaths[i];
1059                         vxge_assert(vpath->is_open);
1060
1061                         if (dev->flags & IFF_PROMISC)
1062                                 status = vxge_hw_vpath_promisc_enable(
1063                                         vpath->handle);
1064                         else
1065                                 status = vxge_hw_vpath_promisc_disable(
1066                                         vpath->handle);
1067                         if (status != VXGE_HW_OK)
1068                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1069                                         ", status %d", dev->flags&IFF_PROMISC ?
1070                                         "enable" : "disable", status);
1071                 }
1072         }
1073
1074         memset(&mac_info, 0, sizeof(struct macInfo));
1075         /* Update individual M_CAST address list */
1076         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1077                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1078                 list_head = &vdev->vpaths[0].mac_addr_list;
1079                 if ((netdev_mc_count(dev) +
1080                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1081                                 vdev->vpaths[0].max_mac_addr_cnt)
1082                         goto _set_all_mcast;
1083
1084                 /* Delete previous MC's */
1085                 for (i = 0; i < mcast_cnt; i++) {
1086                         list_for_each_safe(entry, next, list_head) {
1087                                 mac_entry = (struct vxge_mac_addrs *) entry;
1088                                 /* Copy the mac address to delete */
1089                                 mac_address = (u8 *)&mac_entry->macaddr;
1090                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1091
1092                                 /* Is this a multicast address */
1093                                 if (0x01 & mac_info.macaddr[0]) {
1094                                         for (vpath_idx = 0; vpath_idx <
1095                                                 vdev->no_of_vpath;
1096                                                 vpath_idx++) {
1097                                                 mac_info.vpath_no = vpath_idx;
1098                                                 status = vxge_del_mac_addr(
1099                                                                 vdev,
1100                                                                 &mac_info);
1101                                         }
1102                                 }
1103                         }
1104                 }
1105
1106                 /* Add new ones */
1107                 netdev_for_each_mc_addr(ha, dev) {
1108                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1109                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1110                                         vpath_idx++) {
1111                                 mac_info.vpath_no = vpath_idx;
1112                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1113                                 status = vxge_add_mac_addr(vdev, &mac_info);
1114                                 if (status != VXGE_HW_OK) {
1115                                         vxge_debug_init(VXGE_ERR,
1116                                                 "%s:%d Setting individual"
1117                                                 "multicast address failed",
1118                                                 __func__, __LINE__);
1119                                         goto _set_all_mcast;
1120                                 }
1121                         }
1122                 }
1123
1124                 return;
1125 _set_all_mcast:
1126                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1127                 /* Delete previous MC's */
1128                 for (i = 0; i < mcast_cnt; i++) {
1129                         list_for_each_safe(entry, next, list_head) {
1130                                 mac_entry = (struct vxge_mac_addrs *) entry;
1131                                 /* Copy the mac address to delete */
1132                                 mac_address = (u8 *)&mac_entry->macaddr;
1133                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1134
1135                                 /* Is this a multicast address */
1136                                 if (0x01 & mac_info.macaddr[0])
1137                                         break;
1138                         }
1139
1140                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1141                                         vpath_idx++) {
1142                                 mac_info.vpath_no = vpath_idx;
1143                                 status = vxge_del_mac_addr(vdev, &mac_info);
1144                         }
1145                 }
1146
1147                 /* Enable all multicast */
1148                 for (i = 0; i < vdev->no_of_vpath; i++) {
1149                         vpath = &vdev->vpaths[i];
1150                         vxge_assert(vpath->is_open);
1151
1152                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1153                         if (status != VXGE_HW_OK) {
1154                                 vxge_debug_init(VXGE_ERR,
1155                                         "%s:%d Enabling all multicasts failed",
1156                                          __func__, __LINE__);
1157                         }
1158                         vdev->all_multi_flg = 1;
1159                 }
1160                 dev->flags |= IFF_ALLMULTI;
1161         }
1162
1163         vxge_debug_entryexit(VXGE_TRACE,
1164                 "%s:%d  Exiting...", __func__, __LINE__);
1165 }
1166
1167 /**
1168  * vxge_set_mac_addr
1169  * @dev: pointer to the device structure
1170  *
1171  * Update entry "0" (default MAC addr)
1172  */
1173 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1174 {
1175         struct sockaddr *addr = p;
1176         struct vxgedev *vdev;
1177         struct __vxge_hw_device  *hldev;
1178         enum vxge_hw_status status = VXGE_HW_OK;
1179         struct macInfo mac_info_new, mac_info_old;
1180         int vpath_idx = 0;
1181
1182         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1183
1184         vdev = (struct vxgedev *)netdev_priv(dev);
1185         hldev = vdev->devh;
1186
1187         if (!is_valid_ether_addr(addr->sa_data))
1188                 return -EINVAL;
1189
1190         memset(&mac_info_new, 0, sizeof(struct macInfo));
1191         memset(&mac_info_old, 0, sizeof(struct macInfo));
1192
1193         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1194                 __func__, __LINE__);
1195
1196         /* Get the old address */
1197         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1198
1199         /* Copy the new address */
1200         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1201
1202         /* First delete the old mac address from all the vpaths
1203         as we can't specify the index while adding new mac address */
1204         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1205                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1206                 if (!vpath->is_open) {
1207                         /* This can happen when this interface is added/removed
1208                         to the bonding interface. Delete this station address
1209                         from the linked list */
1210                         vxge_mac_list_del(vpath, &mac_info_old);
1211
1212                         /* Add this new address to the linked list
1213                         for later restoring */
1214                         vxge_mac_list_add(vpath, &mac_info_new);
1215
1216                         continue;
1217                 }
1218                 /* Delete the station address */
1219                 mac_info_old.vpath_no = vpath_idx;
1220                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1221         }
1222
1223         if (unlikely(!is_vxge_card_up(vdev))) {
1224                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1225                 return VXGE_HW_OK;
1226         }
1227
1228         /* Set this mac address to all the vpaths */
1229         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1230                 mac_info_new.vpath_no = vpath_idx;
1231                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1232                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1233                 if (status != VXGE_HW_OK)
1234                         return -EINVAL;
1235         }
1236
1237         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1238
1239         return status;
1240 }
1241
1242 /*
1243  * vxge_vpath_intr_enable
1244  * @vdev: pointer to vdev
1245  * @vp_id: vpath for which to enable the interrupts
1246  *
1247  * Enables the interrupts for the vpath
1248 */
1249 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1250 {
1251         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1252         int msix_id = 0;
1253         int tim_msix_id[4] = {0, 1, 0, 0};
1254         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1255
1256         vxge_hw_vpath_intr_enable(vpath->handle);
1257
1258         if (vdev->config.intr_type == INTA)
1259                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1260         else {
1261                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1262                         alarm_msix_id);
1263
1264                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1265                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1266                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1267
1268                 /* enable the alarm vector */
1269                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1270                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1271                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1272         }
1273 }
1274
1275 /*
1276  * vxge_vpath_intr_disable
1277  * @vdev: pointer to vdev
1278  * @vp_id: vpath for which to disable the interrupts
1279  *
1280  * Disables the interrupts for the vpath
1281 */
1282 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1283 {
1284         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1285         int msix_id;
1286
1287         vxge_hw_vpath_intr_disable(vpath->handle);
1288
1289         if (vdev->config.intr_type == INTA)
1290                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1291         else {
1292                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1293                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1294                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1295
1296                 /* disable the alarm vector */
1297                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1298                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1299                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1300         }
1301 }
1302
1303 /*
1304  * vxge_reset_vpath
1305  * @vdev: pointer to vdev
1306  * @vp_id: vpath to reset
1307  *
1308  * Resets the vpath
1309 */
1310 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1311 {
1312         enum vxge_hw_status status = VXGE_HW_OK;
1313         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1314         int ret = 0;
1315
1316         /* check if device is down already */
1317         if (unlikely(!is_vxge_card_up(vdev)))
1318                 return 0;
1319
1320         /* is device reset already scheduled */
1321         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1322                 return 0;
1323
1324         if (vpath->handle) {
1325                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1326                         if (is_vxge_card_up(vdev) &&
1327                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1328                                         != VXGE_HW_OK) {
1329                                 vxge_debug_init(VXGE_ERR,
1330                                         "vxge_hw_vpath_recover_from_reset"
1331                                         "failed for vpath:%d", vp_id);
1332                                 return status;
1333                         }
1334                 } else {
1335                         vxge_debug_init(VXGE_ERR,
1336                                 "vxge_hw_vpath_reset failed for"
1337                                 "vpath:%d", vp_id);
1338                                 return status;
1339                 }
1340         } else
1341                 return VXGE_HW_FAIL;
1342
1343         vxge_restore_vpath_mac_addr(vpath);
1344         vxge_restore_vpath_vid_table(vpath);
1345
1346         /* Enable all broadcast */
1347         vxge_hw_vpath_bcast_enable(vpath->handle);
1348
1349         /* Enable all multicast */
1350         if (vdev->all_multi_flg) {
1351                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1352                 if (status != VXGE_HW_OK)
1353                         vxge_debug_init(VXGE_ERR,
1354                                 "%s:%d Enabling multicast failed",
1355                                 __func__, __LINE__);
1356         }
1357
1358         /* Enable the interrupts */
1359         vxge_vpath_intr_enable(vdev, vp_id);
1360
1361         smp_wmb();
1362
1363         /* Enable the flow of traffic through the vpath */
1364         vxge_hw_vpath_enable(vpath->handle);
1365
1366         smp_wmb();
1367         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1368         vpath->ring.last_status = VXGE_HW_OK;
1369
1370         /* Vpath reset done */
1371         clear_bit(vp_id, &vdev->vp_reset);
1372
1373         /* Start the vpath queue */
1374         if (netif_tx_queue_stopped(vpath->fifo.txq))
1375                 netif_tx_wake_queue(vpath->fifo.txq);
1376
1377         return ret;
1378 }
1379
1380 static int do_vxge_reset(struct vxgedev *vdev, int event)
1381 {
1382         enum vxge_hw_status status;
1383         int ret = 0, vp_id, i;
1384
1385         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1386
1387         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1388                 /* check if device is down already */
1389                 if (unlikely(!is_vxge_card_up(vdev)))
1390                         return 0;
1391
1392                 /* is reset already scheduled */
1393                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1394                         return 0;
1395         }
1396
1397         if (event == VXGE_LL_FULL_RESET) {
1398                 /* wait for all the vpath reset to complete */
1399                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1400                         while (test_bit(vp_id, &vdev->vp_reset))
1401                                 msleep(50);
1402                 }
1403
1404                 /* if execution mode is set to debug, don't reset the adapter */
1405                 if (unlikely(vdev->exec_mode)) {
1406                         vxge_debug_init(VXGE_ERR,
1407                                 "%s: execution mode is debug, returning..",
1408                                 vdev->ndev->name);
1409                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1410                         netif_tx_stop_all_queues(vdev->ndev);
1411                         return 0;
1412                 }
1413         }
1414
1415         if (event == VXGE_LL_FULL_RESET) {
1416                 vxge_hw_device_intr_disable(vdev->devh);
1417
1418                 switch (vdev->cric_err_event) {
1419                 case VXGE_HW_EVENT_UNKNOWN:
1420                         netif_tx_stop_all_queues(vdev->ndev);
1421                         vxge_debug_init(VXGE_ERR,
1422                                 "fatal: %s: Disabling device due to"
1423                                 "unknown error",
1424                                 vdev->ndev->name);
1425                         ret = -EPERM;
1426                         goto out;
1427                 case VXGE_HW_EVENT_RESET_START:
1428                         break;
1429                 case VXGE_HW_EVENT_RESET_COMPLETE:
1430                 case VXGE_HW_EVENT_LINK_DOWN:
1431                 case VXGE_HW_EVENT_LINK_UP:
1432                 case VXGE_HW_EVENT_ALARM_CLEARED:
1433                 case VXGE_HW_EVENT_ECCERR:
1434                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1435                         ret = -EPERM;
1436                         goto out;
1437                 case VXGE_HW_EVENT_FIFO_ERR:
1438                 case VXGE_HW_EVENT_VPATH_ERR:
1439                         break;
1440                 case VXGE_HW_EVENT_CRITICAL_ERR:
1441                         netif_tx_stop_all_queues(vdev->ndev);
1442                         vxge_debug_init(VXGE_ERR,
1443                                 "fatal: %s: Disabling device due to"
1444                                 "serious error",
1445                                 vdev->ndev->name);
1446                         /* SOP or device reset required */
1447                         /* This event is not currently used */
1448                         ret = -EPERM;
1449                         goto out;
1450                 case VXGE_HW_EVENT_SERR:
1451                         netif_tx_stop_all_queues(vdev->ndev);
1452                         vxge_debug_init(VXGE_ERR,
1453                                 "fatal: %s: Disabling device due to"
1454                                 "serious error",
1455                                 vdev->ndev->name);
1456                         ret = -EPERM;
1457                         goto out;
1458                 case VXGE_HW_EVENT_SRPCIM_SERR:
1459                 case VXGE_HW_EVENT_MRPCIM_SERR:
1460                         ret = -EPERM;
1461                         goto out;
1462                 case VXGE_HW_EVENT_SLOT_FREEZE:
1463                         netif_tx_stop_all_queues(vdev->ndev);
1464                         vxge_debug_init(VXGE_ERR,
1465                                 "fatal: %s: Disabling device due to"
1466                                 "slot freeze",
1467                                 vdev->ndev->name);
1468                         ret = -EPERM;
1469                         goto out;
1470                 default:
1471                         break;
1472
1473                 }
1474         }
1475
1476         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1477                 netif_tx_stop_all_queues(vdev->ndev);
1478
1479         if (event == VXGE_LL_FULL_RESET) {
1480                 status = vxge_reset_all_vpaths(vdev);
1481                 if (status != VXGE_HW_OK) {
1482                         vxge_debug_init(VXGE_ERR,
1483                                 "fatal: %s: can not reset vpaths",
1484                                 vdev->ndev->name);
1485                         ret = -EPERM;
1486                         goto out;
1487                 }
1488         }
1489
1490         if (event == VXGE_LL_COMPL_RESET) {
1491                 for (i = 0; i < vdev->no_of_vpath; i++)
1492                         if (vdev->vpaths[i].handle) {
1493                                 if (vxge_hw_vpath_recover_from_reset(
1494                                         vdev->vpaths[i].handle)
1495                                                 != VXGE_HW_OK) {
1496                                         vxge_debug_init(VXGE_ERR,
1497                                                 "vxge_hw_vpath_recover_"
1498                                                 "from_reset failed for vpath: "
1499                                                 "%d", i);
1500                                         ret = -EPERM;
1501                                         goto out;
1502                                 }
1503                                 } else {
1504                                         vxge_debug_init(VXGE_ERR,
1505                                         "vxge_hw_vpath_reset failed for "
1506                                                 "vpath:%d", i);
1507                                         ret = -EPERM;
1508                                         goto out;
1509                                 }
1510         }
1511
1512         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1513                 /* Reprogram the DA table with populated mac addresses */
1514                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1515                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1516                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1517                 }
1518
1519                 /* enable vpath interrupts */
1520                 for (i = 0; i < vdev->no_of_vpath; i++)
1521                         vxge_vpath_intr_enable(vdev, i);
1522
1523                 vxge_hw_device_intr_enable(vdev->devh);
1524
1525                 smp_wmb();
1526
1527                 /* Indicate card up */
1528                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1529
1530                 /* Get the traffic to flow through the vpaths */
1531                 for (i = 0; i < vdev->no_of_vpath; i++) {
1532                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1533                         smp_wmb();
1534                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1535                 }
1536
1537                 netif_tx_wake_all_queues(vdev->ndev);
1538         }
1539
1540 out:
1541         vxge_debug_entryexit(VXGE_TRACE,
1542                 "%s:%d  Exiting...", __func__, __LINE__);
1543
1544         /* Indicate reset done */
1545         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1546                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1547         return ret;
1548 }
1549
1550 /*
1551  * vxge_reset
1552  * @vdev: pointer to ll device
1553  *
1554  * driver may reset the chip on events of serr, eccerr, etc
1555  */
1556 int vxge_reset(struct vxgedev *vdev)
1557 {
1558         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1559 }
1560
1561 /**
1562  * vxge_poll - Receive handler when Receive Polling is used.
1563  * @dev: pointer to the device structure.
1564  * @budget: Number of packets budgeted to be processed in this iteration.
1565  *
1566  * This function comes into picture only if Receive side is being handled
1567  * through polling (called NAPI in linux). It mostly does what the normal
1568  * Rx interrupt handler does in terms of descriptor and packet processing
1569  * but not in an interrupt context. Also it will process a specified number
1570  * of packets at most in one iteration. This value is passed down by the
1571  * kernel as the function argument 'budget'.
1572  */
1573 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1574 {
1575         struct vxge_ring *ring =
1576                 container_of(napi, struct vxge_ring, napi);
1577         int budget_org = budget;
1578         ring->budget = budget;
1579
1580         vxge_hw_vpath_poll_rx(ring->handle);
1581
1582         if (ring->pkts_processed < budget_org) {
1583                 napi_complete(napi);
1584                 /* Re enable the Rx interrupts for the vpath */
1585                 vxge_hw_channel_msix_unmask(
1586                                 (struct __vxge_hw_channel *)ring->handle,
1587                                 ring->rx_vector_no);
1588         }
1589
1590         return ring->pkts_processed;
1591 }
1592
1593 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1594 {
1595         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1596         int pkts_processed = 0;
1597         int i;
1598         int budget_org = budget;
1599         struct vxge_ring *ring;
1600
1601         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1602                 pci_get_drvdata(vdev->pdev);
1603
1604         for (i = 0; i < vdev->no_of_vpath; i++) {
1605                 ring = &vdev->vpaths[i].ring;
1606                 ring->budget = budget;
1607                 vxge_hw_vpath_poll_rx(ring->handle);
1608                 pkts_processed += ring->pkts_processed;
1609                 budget -= ring->pkts_processed;
1610                 if (budget <= 0)
1611                         break;
1612         }
1613
1614         VXGE_COMPLETE_ALL_TX(vdev);
1615
1616         if (pkts_processed < budget_org) {
1617                 napi_complete(napi);
1618                 /* Re enable the Rx interrupts for the ring */
1619                 vxge_hw_device_unmask_all(hldev);
1620                 vxge_hw_device_flush_io(hldev);
1621         }
1622
1623         return pkts_processed;
1624 }
1625
1626 #ifdef CONFIG_NET_POLL_CONTROLLER
1627 /**
1628  * vxge_netpoll - netpoll event handler entry point
1629  * @dev : pointer to the device structure.
1630  * Description:
1631  *      This function will be called by upper layer to check for events on the
1632  * interface in situations where interrupts are disabled. It is used for
1633  * specific in-kernel networking tasks, such as remote consoles and kernel
1634  * debugging over the network (example netdump in RedHat).
1635  */
1636 static void vxge_netpoll(struct net_device *dev)
1637 {
1638         struct __vxge_hw_device  *hldev;
1639         struct vxgedev *vdev;
1640
1641         vdev = (struct vxgedev *)netdev_priv(dev);
1642         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1643
1644         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1645
1646         if (pci_channel_offline(vdev->pdev))
1647                 return;
1648
1649         disable_irq(dev->irq);
1650         vxge_hw_device_clear_tx_rx(hldev);
1651
1652         vxge_hw_device_clear_tx_rx(hldev);
1653         VXGE_COMPLETE_ALL_RX(vdev);
1654         VXGE_COMPLETE_ALL_TX(vdev);
1655
1656         enable_irq(dev->irq);
1657
1658         vxge_debug_entryexit(VXGE_TRACE,
1659                 "%s:%d  Exiting...", __func__, __LINE__);
1660 }
1661 #endif
1662
1663 /* RTH configuration */
1664 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1665 {
1666         enum vxge_hw_status status = VXGE_HW_OK;
1667         struct vxge_hw_rth_hash_types hash_types;
1668         u8 itable[256] = {0}; /* indirection table */
1669         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1670         int index;
1671
1672         /*
1673          * Filling
1674          *      - itable with bucket numbers
1675          *      - mtable with bucket-to-vpath mapping
1676          */
1677         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1678                 itable[index] = index;
1679                 mtable[index] = index % vdev->no_of_vpath;
1680         }
1681
1682         /* Fill RTH hash types */
1683         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1684         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1685         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1686         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1687         hash_types.hash_type_tcpipv6ex_en =
1688                                         vdev->config.rth_hash_type_tcpipv6ex;
1689         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1690
1691         /* set indirection table, bucket-to-vpath mapping */
1692         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1693                                                 vdev->no_of_vpath,
1694                                                 mtable, itable,
1695                                                 vdev->config.rth_bkt_sz);
1696         if (status != VXGE_HW_OK) {
1697                 vxge_debug_init(VXGE_ERR,
1698                         "RTH indirection table configuration failed "
1699                         "for vpath:%d", vdev->vpaths[0].device_id);
1700                 return status;
1701         }
1702
1703         /*
1704         * Because the itable_set() method uses the active_table field
1705         * for the target virtual path the RTH config should be updated
1706         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1707         * when steering frames.
1708         */
1709          for (index = 0; index < vdev->no_of_vpath; index++) {
1710                 status = vxge_hw_vpath_rts_rth_set(
1711                                 vdev->vpaths[index].handle,
1712                                 vdev->config.rth_algorithm,
1713                                 &hash_types,
1714                                 vdev->config.rth_bkt_sz);
1715
1716                  if (status != VXGE_HW_OK) {
1717                         vxge_debug_init(VXGE_ERR,
1718                                 "RTH configuration failed for vpath:%d",
1719                                 vdev->vpaths[index].device_id);
1720                         return status;
1721                  }
1722          }
1723
1724         return status;
1725 }
1726
1727 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1728 {
1729         struct vxge_mac_addrs *new_mac_entry;
1730         u8 *mac_address = NULL;
1731
1732         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1733                 return TRUE;
1734
1735         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1736         if (!new_mac_entry) {
1737                 vxge_debug_mem(VXGE_ERR,
1738                         "%s: memory allocation failed",
1739                         VXGE_DRIVER_NAME);
1740                 return FALSE;
1741         }
1742
1743         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1744
1745         /* Copy the new mac address to the list */
1746         mac_address = (u8 *)&new_mac_entry->macaddr;
1747         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1748
1749         new_mac_entry->state = mac->state;
1750         vpath->mac_addr_cnt++;
1751
1752         /* Is this a multicast address */
1753         if (0x01 & mac->macaddr[0])
1754                 vpath->mcast_addr_cnt++;
1755
1756         return TRUE;
1757 }
1758
1759 /* Add a mac address to DA table */
1760 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1761 {
1762         enum vxge_hw_status status = VXGE_HW_OK;
1763         struct vxge_vpath *vpath;
1764         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1765
1766         if (0x01 & mac->macaddr[0]) /* multicast address */
1767                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1768         else
1769                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1770
1771         vpath = &vdev->vpaths[mac->vpath_no];
1772         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1773                                                 mac->macmask, duplicate_mode);
1774         if (status != VXGE_HW_OK) {
1775                 vxge_debug_init(VXGE_ERR,
1776                         "DA config add entry failed for vpath:%d",
1777                         vpath->device_id);
1778         } else
1779                 if (FALSE == vxge_mac_list_add(vpath, mac))
1780                         status = -EPERM;
1781
1782         return status;
1783 }
1784
1785 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1786 {
1787         struct list_head *entry, *next;
1788         u64 del_mac = 0;
1789         u8 *mac_address = (u8 *) (&del_mac);
1790
1791         /* Copy the mac address to delete from the list */
1792         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1793
1794         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1795                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1796                         list_del(entry);
1797                         kfree((struct vxge_mac_addrs *)entry);
1798                         vpath->mac_addr_cnt--;
1799
1800                         /* Is this a multicast address */
1801                         if (0x01 & mac->macaddr[0])
1802                                 vpath->mcast_addr_cnt--;
1803                         return TRUE;
1804                 }
1805         }
1806
1807         return FALSE;
1808 }
1809 /* delete a mac address from DA table */
1810 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1811 {
1812         enum vxge_hw_status status = VXGE_HW_OK;
1813         struct vxge_vpath *vpath;
1814
1815         vpath = &vdev->vpaths[mac->vpath_no];
1816         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1817                                                 mac->macmask);
1818         if (status != VXGE_HW_OK) {
1819                 vxge_debug_init(VXGE_ERR,
1820                         "DA config delete entry failed for vpath:%d",
1821                         vpath->device_id);
1822         } else
1823                 vxge_mac_list_del(vpath, mac);
1824         return status;
1825 }
1826
1827 /* list all mac addresses from DA table */
1828 enum vxge_hw_status
1829 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1830                                         struct macInfo *mac)
1831 {
1832         enum vxge_hw_status status = VXGE_HW_OK;
1833         unsigned char macmask[ETH_ALEN];
1834         unsigned char macaddr[ETH_ALEN];
1835
1836         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1837                                 macaddr, macmask);
1838         if (status != VXGE_HW_OK) {
1839                 vxge_debug_init(VXGE_ERR,
1840                         "DA config list entry failed for vpath:%d",
1841                         vpath->device_id);
1842                 return status;
1843         }
1844
1845         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1846
1847                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1848                                 macaddr, macmask);
1849                 if (status != VXGE_HW_OK)
1850                         break;
1851         }
1852
1853         return status;
1854 }
1855
1856 /* Store all vlan ids from the list to the vid table */
1857 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1858 {
1859         enum vxge_hw_status status = VXGE_HW_OK;
1860         struct vxgedev *vdev = vpath->vdev;
1861         u16 vid;
1862
1863         if (vdev->vlgrp && vpath->is_open) {
1864
1865                 for (vid = 0; vid < VLAN_N_VID; vid++) {
1866                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1867                                 continue;
1868                         /* Add these vlan to the vid table */
1869                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1870                 }
1871         }
1872
1873         return status;
1874 }
1875
1876 /* Store all mac addresses from the list to the DA table */
1877 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1878 {
1879         enum vxge_hw_status status = VXGE_HW_OK;
1880         struct macInfo mac_info;
1881         u8 *mac_address = NULL;
1882         struct list_head *entry, *next;
1883
1884         memset(&mac_info, 0, sizeof(struct macInfo));
1885
1886         if (vpath->is_open) {
1887
1888                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1889                         mac_address =
1890                                 (u8 *)&
1891                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1892                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1893                         ((struct vxge_mac_addrs *)entry)->state =
1894                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1895                         /* does this mac address already exist in da table? */
1896                         status = vxge_search_mac_addr_in_da_table(vpath,
1897                                 &mac_info);
1898                         if (status != VXGE_HW_OK) {
1899                                 /* Add this mac address to the DA table */
1900                                 status = vxge_hw_vpath_mac_addr_add(
1901                                         vpath->handle, mac_info.macaddr,
1902                                         mac_info.macmask,
1903                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1904                                 if (status != VXGE_HW_OK) {
1905                                         vxge_debug_init(VXGE_ERR,
1906                                             "DA add entry failed for vpath:%d",
1907                                             vpath->device_id);
1908                                         ((struct vxge_mac_addrs *)entry)->state
1909                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1910                                 }
1911                         }
1912                 }
1913         }
1914
1915         return status;
1916 }
1917
1918 /* reset vpaths */
1919 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1920 {
1921         enum vxge_hw_status status = VXGE_HW_OK;
1922         struct vxge_vpath *vpath;
1923         int i;
1924
1925         for (i = 0; i < vdev->no_of_vpath; i++) {
1926                 vpath = &vdev->vpaths[i];
1927                 if (vpath->handle) {
1928                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1929                                 if (is_vxge_card_up(vdev) &&
1930                                         vxge_hw_vpath_recover_from_reset(
1931                                                 vpath->handle) != VXGE_HW_OK) {
1932                                         vxge_debug_init(VXGE_ERR,
1933                                                 "vxge_hw_vpath_recover_"
1934                                                 "from_reset failed for vpath: "
1935                                                 "%d", i);
1936                                         return status;
1937                                 }
1938                         } else {
1939                                 vxge_debug_init(VXGE_ERR,
1940                                         "vxge_hw_vpath_reset failed for "
1941                                         "vpath:%d", i);
1942                                         return status;
1943                         }
1944                 }
1945         }
1946
1947         return status;
1948 }
1949
1950 /* close vpaths */
1951 void vxge_close_vpaths(struct vxgedev *vdev, int index)
1952 {
1953         struct vxge_vpath *vpath;
1954         int i;
1955
1956         for (i = index; i < vdev->no_of_vpath; i++) {
1957                 vpath = &vdev->vpaths[i];
1958
1959                 if (vpath->handle && vpath->is_open) {
1960                         vxge_hw_vpath_close(vpath->handle);
1961                         vdev->stats.vpaths_open--;
1962                 }
1963                 vpath->is_open = 0;
1964                 vpath->handle = NULL;
1965         }
1966 }
1967
1968 /* open vpaths */
1969 int vxge_open_vpaths(struct vxgedev *vdev)
1970 {
1971         struct vxge_hw_vpath_attr attr;
1972         enum vxge_hw_status status;
1973         struct vxge_vpath *vpath;
1974         u32 vp_id = 0;
1975         int i;
1976
1977         for (i = 0; i < vdev->no_of_vpath; i++) {
1978                 vpath = &vdev->vpaths[i];
1979
1980                 vxge_assert(vpath->is_configured);
1981                 attr.vp_id = vpath->device_id;
1982                 attr.fifo_attr.callback = vxge_xmit_compl;
1983                 attr.fifo_attr.txdl_term = vxge_tx_term;
1984                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
1985                 attr.fifo_attr.userdata = &vpath->fifo;
1986
1987                 attr.ring_attr.callback = vxge_rx_1b_compl;
1988                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
1989                 attr.ring_attr.rxd_term = vxge_rx_term;
1990                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
1991                 attr.ring_attr.userdata = &vpath->ring;
1992
1993                 vpath->ring.ndev = vdev->ndev;
1994                 vpath->ring.pdev = vdev->pdev;
1995                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
1996                 if (status == VXGE_HW_OK) {
1997                         vpath->fifo.handle =
1998                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
1999                         vpath->ring.handle =
2000                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2001                         vpath->fifo.tx_steering_type =
2002                                 vdev->config.tx_steering_type;
2003                         vpath->fifo.ndev = vdev->ndev;
2004                         vpath->fifo.pdev = vdev->pdev;
2005                         if (vdev->config.tx_steering_type)
2006                                 vpath->fifo.txq =
2007                                         netdev_get_tx_queue(vdev->ndev, i);
2008                         else
2009                                 vpath->fifo.txq =
2010                                         netdev_get_tx_queue(vdev->ndev, 0);
2011                         vpath->fifo.indicate_max_pkts =
2012                                 vdev->config.fifo_indicate_max_pkts;
2013                         vpath->ring.rx_vector_no = 0;
2014                         vpath->ring.rx_csum = vdev->rx_csum;
2015                         vpath->is_open = 1;
2016                         vdev->vp_handles[i] = vpath->handle;
2017                         vpath->ring.gro_enable = vdev->config.gro_enable;
2018                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2019                         vdev->stats.vpaths_open++;
2020                 } else {
2021                         vdev->stats.vpath_open_fail++;
2022                         vxge_debug_init(VXGE_ERR,
2023                                 "%s: vpath: %d failed to open "
2024                                 "with status: %d",
2025                             vdev->ndev->name, vpath->device_id,
2026                                 status);
2027                         vxge_close_vpaths(vdev, 0);
2028                         return -EPERM;
2029                 }
2030
2031                 vp_id = vpath->handle->vpath->vp_id;
2032                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2033         }
2034         return VXGE_HW_OK;
2035 }
2036
2037 /*
2038  *  vxge_isr_napi
2039  *  @irq: the irq of the device.
2040  *  @dev_id: a void pointer to the hldev structure of the Titan device
2041  *  @ptregs: pointer to the registers pushed on the stack.
2042  *
2043  *  This function is the ISR handler of the device when napi is enabled. It
2044  *  identifies the reason for the interrupt and calls the relevant service
2045  *  routines.
2046  */
2047 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2048 {
2049         struct net_device *dev;
2050         struct __vxge_hw_device *hldev;
2051         u64 reason;
2052         enum vxge_hw_status status;
2053         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2054
2055         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2056
2057         dev = vdev->ndev;
2058         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2059
2060         if (pci_channel_offline(vdev->pdev))
2061                 return IRQ_NONE;
2062
2063         if (unlikely(!is_vxge_card_up(vdev)))
2064                 return IRQ_NONE;
2065
2066         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2067                         &reason);
2068         if (status == VXGE_HW_OK) {
2069                 vxge_hw_device_mask_all(hldev);
2070
2071                 if (reason &
2072                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2073                         vdev->vpaths_deployed >>
2074                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2075
2076                         vxge_hw_device_clear_tx_rx(hldev);
2077                         napi_schedule(&vdev->napi);
2078                         vxge_debug_intr(VXGE_TRACE,
2079                                 "%s:%d  Exiting...", __func__, __LINE__);
2080                         return IRQ_HANDLED;
2081                 } else
2082                         vxge_hw_device_unmask_all(hldev);
2083         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2084                 (status == VXGE_HW_ERR_CRITICAL) ||
2085                 (status == VXGE_HW_ERR_FIFO))) {
2086                 vxge_hw_device_mask_all(hldev);
2087                 vxge_hw_device_flush_io(hldev);
2088                 return IRQ_HANDLED;
2089         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2090                 return IRQ_HANDLED;
2091
2092         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2093         return IRQ_NONE;
2094 }
2095
2096 #ifdef CONFIG_PCI_MSI
2097
2098 static irqreturn_t
2099 vxge_tx_msix_handle(int irq, void *dev_id)
2100 {
2101         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2102
2103         VXGE_COMPLETE_VPATH_TX(fifo);
2104
2105         return IRQ_HANDLED;
2106 }
2107
2108 static irqreturn_t
2109 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2110 {
2111         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2112
2113         /* MSIX_IDX for Rx is 1 */
2114         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2115                                         ring->rx_vector_no);
2116
2117         napi_schedule(&ring->napi);
2118         return IRQ_HANDLED;
2119 }
2120
2121 static irqreturn_t
2122 vxge_alarm_msix_handle(int irq, void *dev_id)
2123 {
2124         int i;
2125         enum vxge_hw_status status;
2126         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2127         struct vxgedev *vdev = vpath->vdev;
2128         int msix_id = (vpath->handle->vpath->vp_id *
2129                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2130
2131         for (i = 0; i < vdev->no_of_vpath; i++) {
2132                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2133
2134                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2135                         vdev->exec_mode);
2136                 if (status == VXGE_HW_OK) {
2137
2138                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2139                                         msix_id);
2140                         continue;
2141                 }
2142                 vxge_debug_intr(VXGE_ERR,
2143                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2144                         VXGE_DRIVER_NAME, status);
2145         }
2146         return IRQ_HANDLED;
2147 }
2148
2149 static int vxge_alloc_msix(struct vxgedev *vdev)
2150 {
2151         int j, i, ret = 0;
2152         int msix_intr_vect = 0, temp;
2153         vdev->intr_cnt = 0;
2154
2155 start:
2156         /* Tx/Rx MSIX Vectors count */
2157         vdev->intr_cnt = vdev->no_of_vpath * 2;
2158
2159         /* Alarm MSIX Vectors count */
2160         vdev->intr_cnt++;
2161
2162         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2163                                 GFP_KERNEL);
2164         if (!vdev->entries) {
2165                 vxge_debug_init(VXGE_ERR,
2166                         "%s: memory allocation failed",
2167                         VXGE_DRIVER_NAME);
2168                 ret = -ENOMEM;
2169                 goto alloc_entries_failed;
2170         }
2171
2172         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2173                                      sizeof(struct vxge_msix_entry),
2174                                      GFP_KERNEL);
2175         if (!vdev->vxge_entries) {
2176                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2177                         VXGE_DRIVER_NAME);
2178                 ret = -ENOMEM;
2179                 goto alloc_vxge_entries_failed;
2180         }
2181
2182         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2183
2184                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2185
2186                 /* Initialize the fifo vector */
2187                 vdev->entries[j].entry = msix_intr_vect;
2188                 vdev->vxge_entries[j].entry = msix_intr_vect;
2189                 vdev->vxge_entries[j].in_use = 0;
2190                 j++;
2191
2192                 /* Initialize the ring vector */
2193                 vdev->entries[j].entry = msix_intr_vect + 1;
2194                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2195                 vdev->vxge_entries[j].in_use = 0;
2196                 j++;
2197         }
2198
2199         /* Initialize the alarm vector */
2200         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2201         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2202         vdev->vxge_entries[j].in_use = 0;
2203
2204         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2205         if (ret > 0) {
2206                 vxge_debug_init(VXGE_ERR,
2207                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2208                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2209                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2210                         ret = -ENODEV;
2211                         goto enable_msix_failed;
2212                 }
2213
2214                 kfree(vdev->entries);
2215                 kfree(vdev->vxge_entries);
2216                 vdev->entries = NULL;
2217                 vdev->vxge_entries = NULL;
2218                 /* Try with less no of vector by reducing no of vpaths count */
2219                 temp = (ret - 1)/2;
2220                 vxge_close_vpaths(vdev, temp);
2221                 vdev->no_of_vpath = temp;
2222                 goto start;
2223         } else if (ret < 0) {
2224                 ret = -ENODEV;
2225                 goto enable_msix_failed;
2226         }
2227         return 0;
2228
2229 enable_msix_failed:
2230         kfree(vdev->vxge_entries);
2231 alloc_vxge_entries_failed:
2232         kfree(vdev->entries);
2233 alloc_entries_failed:
2234         return ret;
2235 }
2236
2237 static int vxge_enable_msix(struct vxgedev *vdev)
2238 {
2239
2240         int i, ret = 0;
2241         /* 0 - Tx, 1 - Rx  */
2242         int tim_msix_id[4] = {0, 1, 0, 0};
2243
2244         vdev->intr_cnt = 0;
2245
2246         /* allocate msix vectors */
2247         ret = vxge_alloc_msix(vdev);
2248         if (!ret) {
2249                 for (i = 0; i < vdev->no_of_vpath; i++) {
2250                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2251
2252                         /* If fifo or ring are not enabled, the MSIX vector for
2253                          * it should be set to 0.
2254                          */
2255                         vpath->ring.rx_vector_no = (vpath->device_id *
2256                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2257
2258                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2259                                                VXGE_ALARM_MSIX_ID);
2260                 }
2261         }
2262
2263         return ret;
2264 }
2265
2266 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2267 {
2268         int intr_cnt;
2269
2270         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2271                 intr_cnt++) {
2272                 if (vdev->vxge_entries[intr_cnt].in_use) {
2273                         synchronize_irq(vdev->entries[intr_cnt].vector);
2274                         free_irq(vdev->entries[intr_cnt].vector,
2275                                 vdev->vxge_entries[intr_cnt].arg);
2276                         vdev->vxge_entries[intr_cnt].in_use = 0;
2277                 }
2278         }
2279
2280         kfree(vdev->entries);
2281         kfree(vdev->vxge_entries);
2282         vdev->entries = NULL;
2283         vdev->vxge_entries = NULL;
2284
2285         if (vdev->config.intr_type == MSI_X)
2286                 pci_disable_msix(vdev->pdev);
2287 }
2288 #endif
2289
2290 static void vxge_rem_isr(struct vxgedev *vdev)
2291 {
2292         struct __vxge_hw_device  *hldev;
2293         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2294
2295 #ifdef CONFIG_PCI_MSI
2296         if (vdev->config.intr_type == MSI_X) {
2297                 vxge_rem_msix_isr(vdev);
2298         } else
2299 #endif
2300         if (vdev->config.intr_type == INTA) {
2301                         synchronize_irq(vdev->pdev->irq);
2302                         free_irq(vdev->pdev->irq, vdev);
2303         }
2304 }
2305
2306 static int vxge_add_isr(struct vxgedev *vdev)
2307 {
2308         int ret = 0;
2309 #ifdef CONFIG_PCI_MSI
2310         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2311         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2312
2313         if (vdev->config.intr_type == MSI_X)
2314                 ret = vxge_enable_msix(vdev);
2315
2316         if (ret) {
2317                 vxge_debug_init(VXGE_ERR,
2318                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2319                 vxge_debug_init(VXGE_ERR,
2320                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2321                 vdev->config.intr_type = INTA;
2322         }
2323
2324         if (vdev->config.intr_type == MSI_X) {
2325                 for (intr_idx = 0;
2326                      intr_idx < (vdev->no_of_vpath *
2327                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2328
2329                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2330                         irq_req = 0;
2331
2332                         switch (msix_idx) {
2333                         case 0:
2334                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2335                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2336                                         vdev->ndev->name,
2337                                         vdev->entries[intr_cnt].entry,
2338                                         pci_fun, vp_idx);
2339                                 ret = request_irq(
2340                                     vdev->entries[intr_cnt].vector,
2341                                         vxge_tx_msix_handle, 0,
2342                                         vdev->desc[intr_cnt],
2343                                         &vdev->vpaths[vp_idx].fifo);
2344                                         vdev->vxge_entries[intr_cnt].arg =
2345                                                 &vdev->vpaths[vp_idx].fifo;
2346                                 irq_req = 1;
2347                                 break;
2348                         case 1:
2349                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2350                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2351                                         vdev->ndev->name,
2352                                         vdev->entries[intr_cnt].entry,
2353                                         pci_fun, vp_idx);
2354                                 ret = request_irq(
2355                                     vdev->entries[intr_cnt].vector,
2356                                         vxge_rx_msix_napi_handle,
2357                                         0,
2358                                         vdev->desc[intr_cnt],
2359                                         &vdev->vpaths[vp_idx].ring);
2360                                         vdev->vxge_entries[intr_cnt].arg =
2361                                                 &vdev->vpaths[vp_idx].ring;
2362                                 irq_req = 1;
2363                                 break;
2364                         }
2365
2366                         if (ret) {
2367                                 vxge_debug_init(VXGE_ERR,
2368                                         "%s: MSIX - %d  Registration failed",
2369                                         vdev->ndev->name, intr_cnt);
2370                                 vxge_rem_msix_isr(vdev);
2371                                 vdev->config.intr_type = INTA;
2372                                 vxge_debug_init(VXGE_ERR,
2373                                         "%s: Defaulting to INTA"
2374                                         , vdev->ndev->name);
2375                                         goto INTA_MODE;
2376                         }
2377
2378                         if (irq_req) {
2379                                 /* We requested for this msix interrupt */
2380                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2381                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2382                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2383                                 vxge_hw_vpath_msix_unmask(
2384                                         vdev->vpaths[vp_idx].handle,
2385                                         msix_idx);
2386                                 intr_cnt++;
2387                         }
2388
2389                         /* Point to next vpath handler */
2390                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2391                             (vp_idx < (vdev->no_of_vpath - 1)))
2392                                 vp_idx++;
2393                 }
2394
2395                 intr_cnt = vdev->no_of_vpath * 2;
2396                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2397                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2398                         vdev->ndev->name,
2399                         vdev->entries[intr_cnt].entry,
2400                         pci_fun);
2401                 /* For Alarm interrupts */
2402                 ret = request_irq(vdev->entries[intr_cnt].vector,
2403                                         vxge_alarm_msix_handle, 0,
2404                                         vdev->desc[intr_cnt],
2405                                         &vdev->vpaths[0]);
2406                 if (ret) {
2407                         vxge_debug_init(VXGE_ERR,
2408                                 "%s: MSIX - %d Registration failed",
2409                                 vdev->ndev->name, intr_cnt);
2410                         vxge_rem_msix_isr(vdev);
2411                         vdev->config.intr_type = INTA;
2412                         vxge_debug_init(VXGE_ERR,
2413                                 "%s: Defaulting to INTA",
2414                                 vdev->ndev->name);
2415                                 goto INTA_MODE;
2416                 }
2417
2418                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2419                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2420                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2421                                         msix_idx);
2422                 vdev->vxge_entries[intr_cnt].in_use = 1;
2423                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2424         }
2425 INTA_MODE:
2426 #endif
2427
2428         if (vdev->config.intr_type == INTA) {
2429                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2430                         "%s:vxge:INTA", vdev->ndev->name);
2431                 vxge_hw_device_set_intr_type(vdev->devh,
2432                         VXGE_HW_INTR_MODE_IRQLINE);
2433                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2434                         vdev->vpaths[0].device_id);
2435                 ret = request_irq((int) vdev->pdev->irq,
2436                         vxge_isr_napi,
2437                         IRQF_SHARED, vdev->desc[0], vdev);
2438                 if (ret) {
2439                         vxge_debug_init(VXGE_ERR,
2440                                 "%s %s-%d: ISR registration failed",
2441                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2442                         return -ENODEV;
2443                 }
2444                 vxge_debug_init(VXGE_TRACE,
2445                         "new %s-%d line allocated",
2446                         "IRQ", vdev->pdev->irq);
2447         }
2448
2449         return VXGE_HW_OK;
2450 }
2451
2452 static void vxge_poll_vp_reset(unsigned long data)
2453 {
2454         struct vxgedev *vdev = (struct vxgedev *)data;
2455         int i, j = 0;
2456
2457         for (i = 0; i < vdev->no_of_vpath; i++) {
2458                 if (test_bit(i, &vdev->vp_reset)) {
2459                         vxge_reset_vpath(vdev, i);
2460                         j++;
2461                 }
2462         }
2463         if (j && (vdev->config.intr_type != MSI_X)) {
2464                 vxge_hw_device_unmask_all(vdev->devh);
2465                 vxge_hw_device_flush_io(vdev->devh);
2466         }
2467
2468         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2469 }
2470
2471 static void vxge_poll_vp_lockup(unsigned long data)
2472 {
2473         struct vxgedev *vdev = (struct vxgedev *)data;
2474         enum vxge_hw_status status = VXGE_HW_OK;
2475         struct vxge_vpath *vpath;
2476         struct vxge_ring *ring;
2477         int i;
2478
2479         for (i = 0; i < vdev->no_of_vpath; i++) {
2480                 ring = &vdev->vpaths[i].ring;
2481                 /* Did this vpath received any packets */
2482                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2483                         status = vxge_hw_vpath_check_leak(ring->handle);
2484
2485                         /* Did it received any packets last time */
2486                         if ((VXGE_HW_FAIL == status) &&
2487                                 (VXGE_HW_FAIL == ring->last_status)) {
2488
2489                                 /* schedule vpath reset */
2490                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2491                                         vpath = &vdev->vpaths[i];
2492
2493                                         /* disable interrupts for this vpath */
2494                                         vxge_vpath_intr_disable(vdev, i);
2495
2496                                         /* stop the queue for this vpath */
2497                                         netif_tx_stop_queue(vpath->fifo.txq);
2498                                         continue;
2499                                 }
2500                         }
2501                 }
2502                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2503                 ring->last_status = status;
2504         }
2505
2506         /* Check every 1 milli second */
2507         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2508 }
2509
2510 /**
2511  * vxge_open
2512  * @dev: pointer to the device structure.
2513  *
2514  * This function is the open entry point of the driver. It mainly calls a
2515  * function to allocate Rx buffers and inserts them into the buffer
2516  * descriptors and then enables the Rx part of the NIC.
2517  * Return value: '0' on success and an appropriate (-)ve integer as
2518  * defined in errno.h file on failure.
2519  */
2520 int
2521 vxge_open(struct net_device *dev)
2522 {
2523         enum vxge_hw_status status;
2524         struct vxgedev *vdev;
2525         struct __vxge_hw_device *hldev;
2526         struct vxge_vpath *vpath;
2527         int ret = 0;
2528         int i;
2529         u64 val64, function_mode;
2530         vxge_debug_entryexit(VXGE_TRACE,
2531                 "%s: %s:%d", dev->name, __func__, __LINE__);
2532
2533         vdev = (struct vxgedev *)netdev_priv(dev);
2534         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2535         function_mode = vdev->config.device_hw_info.function_mode;
2536
2537         /* make sure you have link off by default every time Nic is
2538          * initialized */
2539         netif_carrier_off(dev);
2540
2541         /* Open VPATHs */
2542         status = vxge_open_vpaths(vdev);
2543         if (status != VXGE_HW_OK) {
2544                 vxge_debug_init(VXGE_ERR,
2545                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2546                 ret = -EPERM;
2547                 goto out0;
2548         }
2549
2550         vdev->mtu = dev->mtu;
2551
2552         status = vxge_add_isr(vdev);
2553         if (status != VXGE_HW_OK) {
2554                 vxge_debug_init(VXGE_ERR,
2555                         "%s: fatal: ISR add failed", dev->name);
2556                 ret = -EPERM;
2557                 goto out1;
2558         }
2559
2560         if (vdev->config.intr_type != MSI_X) {
2561                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2562                         vdev->config.napi_weight);
2563                 napi_enable(&vdev->napi);
2564                 for (i = 0; i < vdev->no_of_vpath; i++) {
2565                         vpath = &vdev->vpaths[i];
2566                         vpath->ring.napi_p = &vdev->napi;
2567                 }
2568         } else {
2569                 for (i = 0; i < vdev->no_of_vpath; i++) {
2570                         vpath = &vdev->vpaths[i];
2571                         netif_napi_add(dev, &vpath->ring.napi,
2572                             vxge_poll_msix, vdev->config.napi_weight);
2573                         napi_enable(&vpath->ring.napi);
2574                         vpath->ring.napi_p = &vpath->ring.napi;
2575                 }
2576         }
2577
2578         /* configure RTH */
2579         if (vdev->config.rth_steering) {
2580                 status = vxge_rth_configure(vdev);
2581                 if (status != VXGE_HW_OK) {
2582                         vxge_debug_init(VXGE_ERR,
2583                                 "%s: fatal: RTH configuration failed",
2584                                 dev->name);
2585                         ret = -EPERM;
2586                         goto out2;
2587                 }
2588         }
2589
2590         for (i = 0; i < vdev->no_of_vpath; i++) {
2591                 vpath = &vdev->vpaths[i];
2592
2593                 /* set initial mtu before enabling the device */
2594                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2595                 if (status != VXGE_HW_OK) {
2596                         vxge_debug_init(VXGE_ERR,
2597                                 "%s: fatal: can not set new MTU", dev->name);
2598                         ret = -EPERM;
2599                         goto out2;
2600                 }
2601         }
2602
2603         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2604         vxge_debug_init(vdev->level_trace,
2605                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2606         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2607
2608         /* Restore the DA, VID table and also multicast and promiscuous mode
2609          * states
2610          */
2611         if (vdev->all_multi_flg) {
2612                 for (i = 0; i < vdev->no_of_vpath; i++) {
2613                         vpath = &vdev->vpaths[i];
2614                         vxge_restore_vpath_mac_addr(vpath);
2615                         vxge_restore_vpath_vid_table(vpath);
2616
2617                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2618                         if (status != VXGE_HW_OK)
2619                                 vxge_debug_init(VXGE_ERR,
2620                                         "%s:%d Enabling multicast failed",
2621                                         __func__, __LINE__);
2622                 }
2623         }
2624
2625         /* Enable vpath to sniff all unicast/multicast traffic that not
2626          * addressed to them. We allow promiscous mode for PF only
2627          */
2628
2629         val64 = 0;
2630         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2631                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2632
2633         vxge_hw_mgmt_reg_write(vdev->devh,
2634                 vxge_hw_mgmt_reg_type_mrpcim,
2635                 0,
2636                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2637                         rxmac_authorize_all_addr),
2638                 val64);
2639
2640         vxge_hw_mgmt_reg_write(vdev->devh,
2641                 vxge_hw_mgmt_reg_type_mrpcim,
2642                 0,
2643                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2644                         rxmac_authorize_all_vid),
2645                 val64);
2646
2647         vxge_set_multicast(dev);
2648
2649         /* Enabling Bcast and mcast for all vpath */
2650         for (i = 0; i < vdev->no_of_vpath; i++) {
2651                 vpath = &vdev->vpaths[i];
2652                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2653                 if (status != VXGE_HW_OK)
2654                         vxge_debug_init(VXGE_ERR,
2655                                 "%s : Can not enable bcast for vpath "
2656                                 "id %d", dev->name, i);
2657                 if (vdev->config.addr_learn_en) {
2658                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2659                         if (status != VXGE_HW_OK)
2660                                 vxge_debug_init(VXGE_ERR,
2661                                         "%s : Can not enable mcast for vpath "
2662                                         "id %d", dev->name, i);
2663                 }
2664         }
2665
2666         vxge_hw_device_setpause_data(vdev->devh, 0,
2667                 vdev->config.tx_pause_enable,
2668                 vdev->config.rx_pause_enable);
2669
2670         if (vdev->vp_reset_timer.function == NULL)
2671                 vxge_os_timer(vdev->vp_reset_timer,
2672                         vxge_poll_vp_reset, vdev, (HZ/2));
2673
2674         if (vdev->vp_lockup_timer.function == NULL)
2675                 vxge_os_timer(vdev->vp_lockup_timer,
2676                         vxge_poll_vp_lockup, vdev, (HZ/2));
2677
2678         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2679
2680         smp_wmb();
2681
2682         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2683                 netif_carrier_on(vdev->ndev);
2684                 netdev_notice(vdev->ndev, "Link Up\n");
2685                 vdev->stats.link_up++;
2686         }
2687
2688         vxge_hw_device_intr_enable(vdev->devh);
2689
2690         smp_wmb();
2691
2692         for (i = 0; i < vdev->no_of_vpath; i++) {
2693                 vpath = &vdev->vpaths[i];
2694
2695                 vxge_hw_vpath_enable(vpath->handle);
2696                 smp_wmb();
2697                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2698         }
2699
2700         netif_tx_start_all_queues(vdev->ndev);
2701         goto out0;
2702
2703 out2:
2704         vxge_rem_isr(vdev);
2705
2706         /* Disable napi */
2707         if (vdev->config.intr_type != MSI_X)
2708                 napi_disable(&vdev->napi);
2709         else {
2710                 for (i = 0; i < vdev->no_of_vpath; i++)
2711                         napi_disable(&vdev->vpaths[i].ring.napi);
2712         }
2713
2714 out1:
2715         vxge_close_vpaths(vdev, 0);
2716 out0:
2717         vxge_debug_entryexit(VXGE_TRACE,
2718                                 "%s: %s:%d  Exiting...",
2719                                 dev->name, __func__, __LINE__);
2720         return ret;
2721 }
2722
2723 /* Loop throught the mac address list and delete all the entries */
2724 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2725 {
2726
2727         struct list_head *entry, *next;
2728         if (list_empty(&vpath->mac_addr_list))
2729                 return;
2730
2731         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2732                 list_del(entry);
2733                 kfree((struct vxge_mac_addrs *)entry);
2734         }
2735 }
2736
2737 static void vxge_napi_del_all(struct vxgedev *vdev)
2738 {
2739         int i;
2740         if (vdev->config.intr_type != MSI_X)
2741                 netif_napi_del(&vdev->napi);
2742         else {
2743                 for (i = 0; i < vdev->no_of_vpath; i++)
2744                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2745         }
2746 }
2747
2748 int do_vxge_close(struct net_device *dev, int do_io)
2749 {
2750         enum vxge_hw_status status;
2751         struct vxgedev *vdev;
2752         struct __vxge_hw_device *hldev;
2753         int i;
2754         u64 val64, vpath_vector;
2755         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2756                 dev->name, __func__, __LINE__);
2757
2758         vdev = (struct vxgedev *)netdev_priv(dev);
2759         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2760
2761         if (unlikely(!is_vxge_card_up(vdev)))
2762                 return 0;
2763
2764         /* If vxge_handle_crit_err task is executing,
2765          * wait till it completes. */
2766         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2767                 msleep(50);
2768
2769         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2770         if (do_io) {
2771                 /* Put the vpath back in normal mode */
2772                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2773                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2774                                 vxge_hw_mgmt_reg_type_mrpcim,
2775                                 0,
2776                                 (ulong)offsetof(
2777                                         struct vxge_hw_mrpcim_reg,
2778                                         rts_mgr_cbasin_cfg),
2779                                 &val64);
2780
2781                 if (status == VXGE_HW_OK) {
2782                         val64 &= ~vpath_vector;
2783                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2784                                         vxge_hw_mgmt_reg_type_mrpcim,
2785                                         0,
2786                                         (ulong)offsetof(
2787                                                 struct vxge_hw_mrpcim_reg,
2788                                                 rts_mgr_cbasin_cfg),
2789                                         val64);
2790                 }
2791
2792                 /* Remove the function 0 from promiscous mode */
2793                 vxge_hw_mgmt_reg_write(vdev->devh,
2794                         vxge_hw_mgmt_reg_type_mrpcim,
2795                         0,
2796                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2797                                 rxmac_authorize_all_addr),
2798                         0);
2799
2800                 vxge_hw_mgmt_reg_write(vdev->devh,
2801                         vxge_hw_mgmt_reg_type_mrpcim,
2802                         0,
2803                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2804                                 rxmac_authorize_all_vid),
2805                         0);
2806
2807                 smp_wmb();
2808         }
2809         del_timer_sync(&vdev->vp_lockup_timer);
2810
2811         del_timer_sync(&vdev->vp_reset_timer);
2812
2813         /* Disable napi */
2814         if (vdev->config.intr_type != MSI_X)
2815                 napi_disable(&vdev->napi);
2816         else {
2817                 for (i = 0; i < vdev->no_of_vpath; i++)
2818                         napi_disable(&vdev->vpaths[i].ring.napi);
2819         }
2820
2821         netif_carrier_off(vdev->ndev);
2822         netdev_notice(vdev->ndev, "Link Down\n");
2823         netif_tx_stop_all_queues(vdev->ndev);
2824
2825         /* Note that at this point xmit() is stopped by upper layer */
2826         if (do_io)
2827                 vxge_hw_device_intr_disable(vdev->devh);
2828
2829         mdelay(1000);
2830
2831         vxge_rem_isr(vdev);
2832
2833         vxge_napi_del_all(vdev);
2834
2835         if (do_io)
2836                 vxge_reset_all_vpaths(vdev);
2837
2838         vxge_close_vpaths(vdev, 0);
2839
2840         vxge_debug_entryexit(VXGE_TRACE,
2841                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2842
2843         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2844
2845         return 0;
2846 }
2847
2848 /**
2849  * vxge_close
2850  * @dev: device pointer.
2851  *
2852  * This is the stop entry point of the driver. It needs to undo exactly
2853  * whatever was done by the open entry point, thus it's usually referred to
2854  * as the close function.Among other things this function mainly stops the
2855  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2856  * Return value: '0' on success and an appropriate (-)ve integer as
2857  * defined in errno.h file on failure.
2858  */
2859 int
2860 vxge_close(struct net_device *dev)
2861 {
2862         do_vxge_close(dev, 1);
2863         return 0;
2864 }
2865
2866 /**
2867  * vxge_change_mtu
2868  * @dev: net device pointer.
2869  * @new_mtu :the new MTU size for the device.
2870  *
2871  * A driver entry point to change MTU size for the device. Before changing
2872  * the MTU the device must be stopped.
2873  */
2874 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2875 {
2876         struct vxgedev *vdev = netdev_priv(dev);
2877
2878         vxge_debug_entryexit(vdev->level_trace,
2879                 "%s:%d", __func__, __LINE__);
2880         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2881                 vxge_debug_init(vdev->level_err,
2882                         "%s: mtu size is invalid", dev->name);
2883                 return -EPERM;
2884         }
2885
2886         /* check if device is down already */
2887         if (unlikely(!is_vxge_card_up(vdev))) {
2888                 /* just store new value, will use later on open() */
2889                 dev->mtu = new_mtu;
2890                 vxge_debug_init(vdev->level_err,
2891                         "%s", "device is down on MTU change");
2892                 return 0;
2893         }
2894
2895         vxge_debug_init(vdev->level_trace,
2896                 "trying to apply new MTU %d", new_mtu);
2897
2898         if (vxge_close(dev))
2899                 return -EIO;
2900
2901         dev->mtu = new_mtu;
2902         vdev->mtu = new_mtu;
2903
2904         if (vxge_open(dev))
2905                 return -EIO;
2906
2907         vxge_debug_init(vdev->level_trace,
2908                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2909
2910         vxge_debug_entryexit(vdev->level_trace,
2911                 "%s:%d  Exiting...", __func__, __LINE__);
2912
2913         return 0;
2914 }
2915
2916 /**
2917  * vxge_get_stats64
2918  * @dev: pointer to the device structure
2919  * @stats: pointer to struct rtnl_link_stats64
2920  *
2921  */
2922 static struct rtnl_link_stats64 *
2923 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2924 {
2925         struct vxgedev *vdev = netdev_priv(dev);
2926         int k;
2927
2928         /* net_stats already zeroed by caller */
2929         for (k = 0; k < vdev->no_of_vpath; k++) {
2930                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2931                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2932                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2933                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2934                 net_stats->rx_dropped +=
2935                         vdev->vpaths[k].ring.stats.rx_dropped;
2936
2937                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2938                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2939                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2940         }
2941
2942         return net_stats;
2943 }
2944
2945 /**
2946  * vxge_ioctl
2947  * @dev: Device pointer.
2948  * @ifr: An IOCTL specific structure, that can contain a pointer to
2949  *       a proprietary structure used to pass information to the driver.
2950  * @cmd: This is used to distinguish between the different commands that
2951  *       can be passed to the IOCTL functions.
2952  *
2953  * Entry point for the Ioctl.
2954  */
2955 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2956 {
2957         return -EOPNOTSUPP;
2958 }
2959
2960 /**
2961  * vxge_tx_watchdog
2962  * @dev: pointer to net device structure
2963  *
2964  * Watchdog for transmit side.
2965  * This function is triggered if the Tx Queue is stopped
2966  * for a pre-defined amount of time when the Interface is still up.
2967  */
2968 static void
2969 vxge_tx_watchdog(struct net_device *dev)
2970 {
2971         struct vxgedev *vdev;
2972
2973         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2974
2975         vdev = (struct vxgedev *)netdev_priv(dev);
2976
2977         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
2978
2979         vxge_reset(vdev);
2980         vxge_debug_entryexit(VXGE_TRACE,
2981                 "%s:%d  Exiting...", __func__, __LINE__);
2982 }
2983
2984 /**
2985  * vxge_vlan_rx_register
2986  * @dev: net device pointer.
2987  * @grp: vlan group
2988  *
2989  * Vlan group registration
2990  */
2991 static void
2992 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
2993 {
2994         struct vxgedev *vdev;
2995         struct vxge_vpath *vpath;
2996         int vp;
2997         u64 vid;
2998         enum vxge_hw_status status;
2999         int i;
3000
3001         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3002
3003         vdev = (struct vxgedev *)netdev_priv(dev);
3004
3005         vpath = &vdev->vpaths[0];
3006         if ((NULL == grp) && (vpath->is_open)) {
3007                 /* Get the first vlan */
3008                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3009
3010                 while (status == VXGE_HW_OK) {
3011
3012                         /* Delete this vlan from the vid table */
3013                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3014                                 vpath = &vdev->vpaths[vp];
3015                                 if (!vpath->is_open)
3016                                         continue;
3017
3018                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3019                         }
3020
3021                         /* Get the next vlan to be deleted */
3022                         vpath = &vdev->vpaths[0];
3023                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3024                 }
3025         }
3026
3027         vdev->vlgrp = grp;
3028
3029         for (i = 0; i < vdev->no_of_vpath; i++) {
3030                 if (vdev->vpaths[i].is_configured)
3031                         vdev->vpaths[i].ring.vlgrp = grp;
3032         }
3033
3034         vxge_debug_entryexit(VXGE_TRACE,
3035                 "%s:%d  Exiting...", __func__, __LINE__);
3036 }
3037
3038 /**
3039  * vxge_vlan_rx_add_vid
3040  * @dev: net device pointer.
3041  * @vid: vid
3042  *
3043  * Add the vlan id to the devices vlan id table
3044  */
3045 static void
3046 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3047 {
3048         struct vxgedev *vdev;
3049         struct vxge_vpath *vpath;
3050         int vp_id;
3051
3052         vdev = (struct vxgedev *)netdev_priv(dev);
3053
3054         /* Add these vlan to the vid table */
3055         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3056                 vpath = &vdev->vpaths[vp_id];
3057                 if (!vpath->is_open)
3058                         continue;
3059                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3060         }
3061 }
3062
3063 /**
3064  * vxge_vlan_rx_add_vid
3065  * @dev: net device pointer.
3066  * @vid: vid
3067  *
3068  * Remove the vlan id from the device's vlan id table
3069  */
3070 static void
3071 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3072 {
3073         struct vxgedev *vdev;
3074         struct vxge_vpath *vpath;
3075         int vp_id;
3076
3077         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3078
3079         vdev = (struct vxgedev *)netdev_priv(dev);
3080
3081         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3082
3083         /* Delete this vlan from the vid table */
3084         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3085                 vpath = &vdev->vpaths[vp_id];
3086                 if (!vpath->is_open)
3087                         continue;
3088                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3089         }
3090         vxge_debug_entryexit(VXGE_TRACE,
3091                 "%s:%d  Exiting...", __func__, __LINE__);
3092 }
3093
3094 static const struct net_device_ops vxge_netdev_ops = {
3095         .ndo_open               = vxge_open,
3096         .ndo_stop               = vxge_close,
3097         .ndo_get_stats64        = vxge_get_stats64,
3098         .ndo_start_xmit         = vxge_xmit,
3099         .ndo_validate_addr      = eth_validate_addr,
3100         .ndo_set_multicast_list = vxge_set_multicast,
3101
3102         .ndo_do_ioctl           = vxge_ioctl,
3103
3104         .ndo_set_mac_address    = vxge_set_mac_addr,
3105         .ndo_change_mtu         = vxge_change_mtu,
3106         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3107         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3108         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3109
3110         .ndo_tx_timeout         = vxge_tx_watchdog,
3111 #ifdef CONFIG_NET_POLL_CONTROLLER
3112         .ndo_poll_controller    = vxge_netpoll,
3113 #endif
3114 };
3115
3116 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3117                                    struct vxge_config *config,
3118                                    int high_dma, int no_of_vpath,
3119                                    struct vxgedev **vdev_out)
3120 {
3121         struct net_device *ndev;
3122         enum vxge_hw_status status = VXGE_HW_OK;
3123         struct vxgedev *vdev;
3124         int ret = 0, no_of_queue = 1;
3125         u64 stat;
3126
3127         *vdev_out = NULL;
3128         if (config->tx_steering_type)
3129                 no_of_queue = no_of_vpath;
3130
3131         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3132                         no_of_queue);
3133         if (ndev == NULL) {
3134                 vxge_debug_init(
3135                         vxge_hw_device_trace_level_get(hldev),
3136                 "%s : device allocation failed", __func__);
3137                 ret = -ENODEV;
3138                 goto _out0;
3139         }
3140
3141         vxge_debug_entryexit(
3142                 vxge_hw_device_trace_level_get(hldev),
3143                 "%s: %s:%d  Entering...",
3144                 ndev->name, __func__, __LINE__);
3145
3146         vdev = netdev_priv(ndev);
3147         memset(vdev, 0, sizeof(struct vxgedev));
3148
3149         vdev->ndev = ndev;
3150         vdev->devh = hldev;
3151         vdev->pdev = hldev->pdev;
3152         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3153         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3154
3155         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3156
3157         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3158                                 NETIF_F_HW_VLAN_FILTER;
3159         /*  Driver entry points */
3160         ndev->irq = vdev->pdev->irq;
3161         ndev->base_addr = (unsigned long) hldev->bar0;
3162
3163         ndev->netdev_ops = &vxge_netdev_ops;
3164
3165         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3166
3167         initialize_ethtool_ops(ndev);
3168
3169         /* Allocate memory for vpath */
3170         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3171                                 no_of_vpath, GFP_KERNEL);
3172         if (!vdev->vpaths) {
3173                 vxge_debug_init(VXGE_ERR,
3174                         "%s: vpath memory allocation failed",
3175                         vdev->ndev->name);
3176                 ret = -ENODEV;
3177                 goto _out1;
3178         }
3179
3180         ndev->features |= NETIF_F_SG;
3181
3182         ndev->features |= NETIF_F_HW_CSUM;
3183         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3184                 "%s : checksuming enabled", __func__);
3185
3186         if (high_dma) {
3187                 ndev->features |= NETIF_F_HIGHDMA;
3188                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3189                         "%s : using High DMA", __func__);
3190         }
3191
3192         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3193
3194         if (vdev->config.gro_enable)
3195                 ndev->features |= NETIF_F_GRO;
3196
3197         if (register_netdev(ndev)) {
3198                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3199                         "%s: %s : device registration failed!",
3200                         ndev->name, __func__);
3201                 ret = -ENODEV;
3202                 goto _out2;
3203         }
3204
3205         /*  Set the factory defined MAC address initially */
3206         ndev->addr_len = ETH_ALEN;
3207
3208         /* Make Link state as off at this point, when the Link change
3209          * interrupt comes the state will be automatically changed to
3210          * the right state.
3211          */
3212         netif_carrier_off(ndev);
3213
3214         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3215                 "%s: Ethernet device registered",
3216                 ndev->name);
3217
3218         *vdev_out = vdev;
3219
3220         /* Resetting the Device stats */
3221         status = vxge_hw_mrpcim_stats_access(
3222                                 hldev,
3223                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3224                                 0,
3225                                 0,
3226                                 &stat);
3227
3228         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3229                 vxge_debug_init(
3230                         vxge_hw_device_trace_level_get(hldev),
3231                         "%s: device stats clear returns"
3232                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3233
3234         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3235                 "%s: %s:%d  Exiting...",
3236                 ndev->name, __func__, __LINE__);
3237
3238         return ret;
3239 _out2:
3240         kfree(vdev->vpaths);
3241 _out1:
3242         free_netdev(ndev);
3243 _out0:
3244         return ret;
3245 }
3246
3247 /*
3248  * vxge_device_unregister
3249  *
3250  * This function will unregister and free network device
3251  */
3252 void
3253 vxge_device_unregister(struct __vxge_hw_device *hldev)
3254 {
3255         struct vxgedev *vdev;
3256         struct net_device *dev;
3257         char buf[IFNAMSIZ];
3258 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3259         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3260         u32 level_trace;
3261 #endif
3262
3263         dev = hldev->ndev;
3264         vdev = netdev_priv(dev);
3265 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3266         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3267         level_trace = vdev->level_trace;
3268 #endif
3269         vxge_debug_entryexit(level_trace,
3270                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3271
3272         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3273
3274         /* in 2.6 will call stop() if device is up */
3275         unregister_netdev(dev);
3276
3277         flush_scheduled_work();
3278
3279         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3280         vxge_debug_entryexit(level_trace,
3281                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3282 }
3283
3284 /*
3285  * vxge_callback_crit_err
3286  *
3287  * This function is called by the alarm handler in interrupt context.
3288  * Driver must analyze it based on the event type.
3289  */
3290 static void
3291 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3292                         enum vxge_hw_event type, u64 vp_id)
3293 {
3294         struct net_device *dev = hldev->ndev;
3295         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3296         struct vxge_vpath *vpath = NULL;
3297         int vpath_idx;
3298
3299         vxge_debug_entryexit(vdev->level_trace,
3300                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3301
3302         /* Note: This event type should be used for device wide
3303          * indications only - Serious errors, Slot freeze and critical errors
3304          */
3305         vdev->cric_err_event = type;
3306
3307         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3308                 vpath = &vdev->vpaths[vpath_idx];
3309                 if (vpath->device_id == vp_id)
3310                         break;
3311         }
3312
3313         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3314                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3315                         vxge_debug_init(VXGE_ERR,
3316                                 "%s: Slot is frozen", vdev->ndev->name);
3317                 } else if (type == VXGE_HW_EVENT_SERR) {
3318                         vxge_debug_init(VXGE_ERR,
3319                                 "%s: Encountered Serious Error",
3320                                 vdev->ndev->name);
3321                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3322                         vxge_debug_init(VXGE_ERR,
3323                                 "%s: Encountered Critical Error",
3324                                 vdev->ndev->name);
3325         }
3326
3327         if ((type == VXGE_HW_EVENT_SERR) ||
3328                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3329                 if (unlikely(vdev->exec_mode))
3330                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3331         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3332                 vxge_hw_device_mask_all(hldev);
3333                 if (unlikely(vdev->exec_mode))
3334                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3335         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3336                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3337
3338                 if (unlikely(vdev->exec_mode))
3339                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3340                 else {
3341                         /* check if this vpath is already set for reset */
3342                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3343
3344                                 /* disable interrupts for this vpath */
3345                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3346
3347                                 /* stop the queue for this vpath */
3348                                 netif_tx_stop_queue(vpath->fifo.txq);
3349                         }
3350                 }
3351         }
3352
3353         vxge_debug_entryexit(vdev->level_trace,
3354                 "%s: %s:%d  Exiting...",
3355                 vdev->ndev->name, __func__, __LINE__);
3356 }
3357
3358 static void verify_bandwidth(void)
3359 {
3360         int i, band_width, total = 0, equal_priority = 0;
3361
3362         /* 1. If user enters 0 for some fifo, give equal priority to all */
3363         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3364                 if (bw_percentage[i] == 0) {
3365                         equal_priority = 1;
3366                         break;
3367                 }
3368         }
3369
3370         if (!equal_priority) {
3371                 /* 2. If sum exceeds 100, give equal priority to all */
3372                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3373                         if (bw_percentage[i] == 0xFF)
3374                                 break;
3375
3376                         total += bw_percentage[i];
3377                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3378                                 equal_priority = 1;
3379                                 break;
3380                         }
3381                 }
3382         }
3383
3384         if (!equal_priority) {
3385                 /* Is all the bandwidth consumed? */
3386                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3387                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3388                                 /* Split rest of bw equally among next VPs*/
3389                                 band_width =
3390                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3391                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3392                                 if (band_width < 2) /* min of 2% */
3393                                         equal_priority = 1;
3394                                 else {
3395                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3396                                                 i++)
3397                                                 bw_percentage[i] =
3398                                                         band_width;
3399                                 }
3400                         }
3401                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3402                         equal_priority = 1;
3403         }
3404
3405         if (equal_priority) {
3406                 vxge_debug_init(VXGE_ERR,
3407                         "%s: Assigning equal bandwidth to all the vpaths",
3408                         VXGE_DRIVER_NAME);
3409                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3410                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3411                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3412                         bw_percentage[i] = bw_percentage[0];
3413         }
3414 }
3415
3416 /*
3417  * Vpath configuration
3418  */
3419 static int __devinit vxge_config_vpaths(
3420                         struct vxge_hw_device_config *device_config,
3421                         u64 vpath_mask, struct vxge_config *config_param)
3422 {
3423         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3424         u32 txdl_size, txdl_per_memblock;
3425
3426         temp = driver_config->vpath_per_dev;
3427         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3428                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3429                 /* No more CPU. Return vpath number as zero.*/
3430                 if (driver_config->g_no_cpus == -1)
3431                         return 0;
3432
3433                 if (!driver_config->g_no_cpus)
3434                         driver_config->g_no_cpus = num_online_cpus();
3435
3436                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3437                 if (!driver_config->vpath_per_dev)
3438                         driver_config->vpath_per_dev = 1;
3439
3440                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3441                         if (!vxge_bVALn(vpath_mask, i, 1))
3442                                 continue;
3443                         else
3444                                 default_no_vpath++;
3445                 if (default_no_vpath < driver_config->vpath_per_dev)
3446                         driver_config->vpath_per_dev = default_no_vpath;
3447
3448                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3449                                 (driver_config->vpath_per_dev * 2);
3450                 if (driver_config->g_no_cpus <= 0)
3451                         driver_config->g_no_cpus = -1;
3452         }
3453
3454         if (driver_config->vpath_per_dev == 1) {
3455                 vxge_debug_ll_config(VXGE_TRACE,
3456                         "%s: Disable tx and rx steering, "
3457                         "as single vpath is configured", VXGE_DRIVER_NAME);
3458                 config_param->rth_steering = NO_STEERING;
3459                 config_param->tx_steering_type = NO_STEERING;
3460                 device_config->rth_en = 0;
3461         }
3462
3463         /* configure bandwidth */
3464         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3465                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3466
3467         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3468                 device_config->vp_config[i].vp_id = i;
3469                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3470                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3471                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3472                                 vxge_debug_ll_config(VXGE_TRACE,
3473                                         "%s: vpath: %d is not available",
3474                                         VXGE_DRIVER_NAME, i);
3475                                 continue;
3476                         } else {
3477                                 vxge_debug_ll_config(VXGE_TRACE,
3478                                         "%s: vpath: %d available",
3479                                         VXGE_DRIVER_NAME, i);
3480                                 no_of_vpaths++;
3481                         }
3482                 } else {
3483                         vxge_debug_ll_config(VXGE_TRACE,
3484                                 "%s: vpath: %d is not configured, "
3485                                 "max_config_vpath exceeded",
3486                                 VXGE_DRIVER_NAME, i);
3487                         break;
3488                 }
3489
3490                 /* Configure Tx fifo's */
3491                 device_config->vp_config[i].fifo.enable =
3492                                                 VXGE_HW_FIFO_ENABLE;
3493                 device_config->vp_config[i].fifo.max_frags =
3494                                 MAX_SKB_FRAGS + 1;
3495                 device_config->vp_config[i].fifo.memblock_size =
3496                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3497
3498                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3499                                 sizeof(struct vxge_hw_fifo_txd);
3500                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3501
3502                 device_config->vp_config[i].fifo.fifo_blocks =
3503                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3504
3505                 device_config->vp_config[i].fifo.intr =
3506                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3507
3508                 /* Configure tti properties */
3509                 device_config->vp_config[i].tti.intr_enable =
3510                                         VXGE_HW_TIM_INTR_ENABLE;
3511
3512                 device_config->vp_config[i].tti.btimer_val =
3513                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3514
3515                 device_config->vp_config[i].tti.timer_ac_en =
3516                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3517
3518                 /* For msi-x with napi (each vector
3519                 has a handler of its own) -
3520                 Set CI to OFF for all vpaths */
3521                 device_config->vp_config[i].tti.timer_ci_en =
3522                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3523
3524                 device_config->vp_config[i].tti.timer_ri_en =
3525                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3526
3527                 device_config->vp_config[i].tti.util_sel =
3528                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3529
3530                 device_config->vp_config[i].tti.ltimer_val =
3531                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3532
3533                 device_config->vp_config[i].tti.rtimer_val =
3534                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3535
3536                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3537                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3538                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3539                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3540                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3541                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3542                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3543
3544                 /* Configure Rx rings */
3545                 device_config->vp_config[i].ring.enable  =
3546                                                 VXGE_HW_RING_ENABLE;
3547
3548                 device_config->vp_config[i].ring.ring_blocks  =
3549                                                 VXGE_HW_DEF_RING_BLOCKS;
3550                 device_config->vp_config[i].ring.buffer_mode =
3551                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3552                 device_config->vp_config[i].ring.rxds_limit  =
3553                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3554                 device_config->vp_config[i].ring.scatter_mode =
3555                                         VXGE_HW_RING_SCATTER_MODE_A;
3556
3557                 /* Configure rti properties */
3558                 device_config->vp_config[i].rti.intr_enable =
3559                                         VXGE_HW_TIM_INTR_ENABLE;
3560
3561                 device_config->vp_config[i].rti.btimer_val =
3562                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3563
3564                 device_config->vp_config[i].rti.timer_ac_en =
3565                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3566
3567                 device_config->vp_config[i].rti.timer_ci_en =
3568                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3569
3570                 device_config->vp_config[i].rti.timer_ri_en =
3571                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3572
3573                 device_config->vp_config[i].rti.util_sel =
3574                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3575
3576                 device_config->vp_config[i].rti.urange_a =
3577                                                 RTI_RX_URANGE_A;
3578                 device_config->vp_config[i].rti.urange_b =
3579                                                 RTI_RX_URANGE_B;
3580                 device_config->vp_config[i].rti.urange_c =
3581                                                 RTI_RX_URANGE_C;
3582                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3583                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3584                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3585                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3586
3587                 device_config->vp_config[i].rti.rtimer_val =
3588                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3589
3590                 device_config->vp_config[i].rti.ltimer_val =
3591                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3592
3593                 device_config->vp_config[i].rpa_strip_vlan_tag =
3594                         vlan_tag_strip;
3595         }
3596
3597         driver_config->vpath_per_dev = temp;
3598         return no_of_vpaths;
3599 }
3600
3601 /* initialize device configuratrions */
3602 static void __devinit vxge_device_config_init(
3603                                 struct vxge_hw_device_config *device_config,
3604                                 int *intr_type)
3605 {
3606         /* Used for CQRQ/SRQ. */
3607         device_config->dma_blockpool_initial =
3608                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3609
3610         device_config->dma_blockpool_max =
3611                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3612
3613         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3614                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3615
3616 #ifndef CONFIG_PCI_MSI
3617         vxge_debug_init(VXGE_ERR,
3618                 "%s: This Kernel does not support "
3619                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3620         *intr_type = INTA;
3621 #endif
3622
3623         /* Configure whether MSI-X or IRQL. */
3624         switch (*intr_type) {
3625         case INTA:
3626                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3627                 break;
3628
3629         case MSI_X:
3630                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3631                 break;
3632         }
3633         /* Timer period between device poll */
3634         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3635
3636         /* Configure mac based steering. */
3637         device_config->rts_mac_en = addr_learn_en;
3638
3639         /* Configure Vpaths */
3640         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3641
3642         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3643                         __func__);
3644         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3645                         device_config->dma_blockpool_initial);
3646         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3647                         device_config->dma_blockpool_max);
3648         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3649                         device_config->intr_mode);
3650         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3651                         device_config->device_poll_millis);
3652         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3653                         device_config->rts_mac_en);
3654         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3655                         device_config->rth_en);
3656         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3657                         device_config->rth_it_type);
3658 }
3659
3660 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3661 {
3662         int i;
3663
3664         vxge_debug_init(VXGE_TRACE,
3665                 "%s: %d Vpath(s) opened",
3666                 vdev->ndev->name, vdev->no_of_vpath);
3667
3668         switch (vdev->config.intr_type) {
3669         case INTA:
3670                 vxge_debug_init(VXGE_TRACE,
3671                         "%s: Interrupt type INTA", vdev->ndev->name);
3672                 break;
3673
3674         case MSI_X:
3675                 vxge_debug_init(VXGE_TRACE,
3676                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3677                 break;
3678         }
3679
3680         if (vdev->config.rth_steering) {
3681                 vxge_debug_init(VXGE_TRACE,
3682                         "%s: RTH steering enabled for TCP_IPV4",
3683                         vdev->ndev->name);
3684         } else {
3685                 vxge_debug_init(VXGE_TRACE,
3686                         "%s: RTH steering disabled", vdev->ndev->name);
3687         }
3688
3689         switch (vdev->config.tx_steering_type) {
3690         case NO_STEERING:
3691                 vxge_debug_init(VXGE_TRACE,
3692                         "%s: Tx steering disabled", vdev->ndev->name);
3693                 break;
3694         case TX_PRIORITY_STEERING:
3695                 vxge_debug_init(VXGE_TRACE,
3696                         "%s: Unsupported tx steering option",
3697                         vdev->ndev->name);
3698                 vxge_debug_init(VXGE_TRACE,
3699                         "%s: Tx steering disabled", vdev->ndev->name);
3700                 vdev->config.tx_steering_type = 0;
3701                 break;
3702         case TX_VLAN_STEERING:
3703                 vxge_debug_init(VXGE_TRACE,
3704                         "%s: Unsupported tx steering option",
3705                         vdev->ndev->name);
3706                 vxge_debug_init(VXGE_TRACE,
3707                         "%s: Tx steering disabled", vdev->ndev->name);
3708                 vdev->config.tx_steering_type = 0;
3709                 break;
3710         case TX_MULTIQ_STEERING:
3711                 vxge_debug_init(VXGE_TRACE,
3712                         "%s: Tx multiqueue steering enabled",
3713                         vdev->ndev->name);
3714                 break;
3715         case TX_PORT_STEERING:
3716                 vxge_debug_init(VXGE_TRACE,
3717                         "%s: Tx port steering enabled",
3718                         vdev->ndev->name);
3719                 break;
3720         default:
3721                 vxge_debug_init(VXGE_ERR,
3722                         "%s: Unsupported tx steering type",
3723                         vdev->ndev->name);
3724                 vxge_debug_init(VXGE_TRACE,
3725                         "%s: Tx steering disabled", vdev->ndev->name);
3726                 vdev->config.tx_steering_type = 0;
3727         }
3728
3729         if (vdev->config.gro_enable) {
3730                 vxge_debug_init(VXGE_ERR,
3731                         "%s: Generic receive offload enabled",
3732                         vdev->ndev->name);
3733         } else
3734                 vxge_debug_init(VXGE_TRACE,
3735                         "%s: Generic receive offload disabled",
3736                         vdev->ndev->name);
3737
3738         if (vdev->config.addr_learn_en)
3739                 vxge_debug_init(VXGE_TRACE,
3740                         "%s: MAC Address learning enabled", vdev->ndev->name);
3741
3742         vxge_debug_init(VXGE_TRACE,
3743                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3744
3745         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3746                 if (!vxge_bVALn(vpath_mask, i, 1))
3747                         continue;
3748                 vxge_debug_ll_config(VXGE_TRACE,
3749                         "%s: MTU size - %d", vdev->ndev->name,
3750                         ((struct __vxge_hw_device  *)(vdev->devh))->
3751                                 config.vp_config[i].mtu);
3752                 vxge_debug_init(VXGE_TRACE,
3753                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3754                         ((struct __vxge_hw_device  *)(vdev->devh))->
3755                                 config.vp_config[i].rpa_strip_vlan_tag
3756                         ? "Enabled" : "Disabled");
3757                 vxge_debug_init(VXGE_TRACE,
3758                         "%s: Ring blocks : %d", vdev->ndev->name,
3759                         ((struct __vxge_hw_device  *)(vdev->devh))->
3760                                 config.vp_config[i].ring.ring_blocks);
3761                 vxge_debug_init(VXGE_TRACE,
3762                         "%s: Fifo blocks : %d", vdev->ndev->name,
3763                         ((struct __vxge_hw_device  *)(vdev->devh))->
3764                                 config.vp_config[i].fifo.fifo_blocks);
3765                 vxge_debug_ll_config(VXGE_TRACE,
3766                         "%s: Max frags : %d", vdev->ndev->name,
3767                         ((struct __vxge_hw_device  *)(vdev->devh))->
3768                                 config.vp_config[i].fifo.max_frags);
3769                 break;
3770         }
3771 }
3772
3773 #ifdef CONFIG_PM
3774 /**
3775  * vxge_pm_suspend - vxge power management suspend entry point
3776  *
3777  */
3778 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3779 {
3780         return -ENOSYS;
3781 }
3782 /**
3783  * vxge_pm_resume - vxge power management resume entry point
3784  *
3785  */
3786 static int vxge_pm_resume(struct pci_dev *pdev)
3787 {
3788         return -ENOSYS;
3789 }
3790
3791 #endif
3792
3793 /**
3794  * vxge_io_error_detected - called when PCI error is detected
3795  * @pdev: Pointer to PCI device
3796  * @state: The current pci connection state
3797  *
3798  * This function is called after a PCI bus error affecting
3799  * this device has been detected.
3800  */
3801 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3802                                                 pci_channel_state_t state)
3803 {
3804         struct __vxge_hw_device  *hldev =
3805                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3806         struct net_device *netdev = hldev->ndev;
3807
3808         netif_device_detach(netdev);
3809
3810         if (state == pci_channel_io_perm_failure)
3811                 return PCI_ERS_RESULT_DISCONNECT;
3812
3813         if (netif_running(netdev)) {
3814                 /* Bring down the card, while avoiding PCI I/O */
3815                 do_vxge_close(netdev, 0);
3816         }
3817
3818         pci_disable_device(pdev);
3819
3820         return PCI_ERS_RESULT_NEED_RESET;
3821 }
3822
3823 /**
3824  * vxge_io_slot_reset - called after the pci bus has been reset.
3825  * @pdev: Pointer to PCI device
3826  *
3827  * Restart the card from scratch, as if from a cold-boot.
3828  * At this point, the card has exprienced a hard reset,
3829  * followed by fixups by BIOS, and has its config space
3830  * set up identically to what it was at cold boot.
3831  */
3832 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3833 {
3834         struct __vxge_hw_device  *hldev =
3835                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3836         struct net_device *netdev = hldev->ndev;
3837
3838         struct vxgedev *vdev = netdev_priv(netdev);
3839
3840         if (pci_enable_device(pdev)) {
3841                 netdev_err(netdev, "Cannot re-enable device after reset\n");
3842                 return PCI_ERS_RESULT_DISCONNECT;
3843         }
3844
3845         pci_set_master(pdev);
3846         vxge_reset(vdev);
3847
3848         return PCI_ERS_RESULT_RECOVERED;
3849 }
3850
3851 /**
3852  * vxge_io_resume - called when traffic can start flowing again.
3853  * @pdev: Pointer to PCI device
3854  *
3855  * This callback is called when the error recovery driver tells
3856  * us that its OK to resume normal operation.
3857  */
3858 static void vxge_io_resume(struct pci_dev *pdev)
3859 {
3860         struct __vxge_hw_device  *hldev =
3861                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3862         struct net_device *netdev = hldev->ndev;
3863
3864         if (netif_running(netdev)) {
3865                 if (vxge_open(netdev)) {
3866                         netdev_err(netdev,
3867                                    "Can't bring device back up after reset\n");
3868                         return;
3869                 }
3870         }
3871
3872         netif_device_attach(netdev);
3873 }
3874
3875 static inline u32 vxge_get_num_vfs(u64 function_mode)
3876 {
3877         u32 num_functions = 0;
3878
3879         switch (function_mode) {
3880         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3881         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3882                 num_functions = 8;
3883                 break;
3884         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3885                 num_functions = 1;
3886                 break;
3887         case VXGE_HW_FUNCTION_MODE_SRIOV:
3888         case VXGE_HW_FUNCTION_MODE_MRIOV:
3889         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3890                 num_functions = 17;
3891                 break;
3892         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3893                 num_functions = 4;
3894                 break;
3895         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3896                 num_functions = 2;
3897                 break;
3898         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
3899                 num_functions = 8; /* TODO */
3900                 break;
3901         }
3902         return num_functions;
3903 }
3904
3905 /**
3906  * vxge_probe
3907  * @pdev : structure containing the PCI related information of the device.
3908  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
3909  * Description:
3910  * This function is called when a new PCI device gets detected and initializes
3911  * it.
3912  * Return value:
3913  * returns 0 on success and negative on failure.
3914  *
3915  */
3916 static int __devinit
3917 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
3918 {
3919         struct __vxge_hw_device  *hldev;
3920         enum vxge_hw_status status;
3921         int ret;
3922         int high_dma = 0;
3923         u64 vpath_mask = 0;
3924         struct vxgedev *vdev;
3925         struct vxge_config *ll_config = NULL;
3926         struct vxge_hw_device_config *device_config = NULL;
3927         struct vxge_hw_device_attr attr;
3928         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
3929         u8 *macaddr;
3930         struct vxge_mac_addrs *entry;
3931         static int bus = -1, device = -1;
3932         u32 host_type;
3933         u8 new_device = 0;
3934         enum vxge_hw_status is_privileged;
3935         u32 function_mode;
3936         u32 num_vfs = 0;
3937
3938         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3939         attr.pdev = pdev;
3940
3941         /* In SRIOV-17 mode, functions of the same adapter
3942          * can be deployed on different buses */
3943         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
3944                 (device != PCI_SLOT(pdev->devfn))))
3945                 new_device = 1;
3946
3947         bus = pdev->bus->number;
3948         device = PCI_SLOT(pdev->devfn);
3949
3950         if (new_device) {
3951                 if (driver_config->config_dev_cnt &&
3952                    (driver_config->config_dev_cnt !=
3953                         driver_config->total_dev_cnt))
3954                         vxge_debug_init(VXGE_ERR,
3955                                 "%s: Configured %d of %d devices",
3956                                 VXGE_DRIVER_NAME,
3957                                 driver_config->config_dev_cnt,
3958                                 driver_config->total_dev_cnt);
3959                 driver_config->config_dev_cnt = 0;
3960                 driver_config->total_dev_cnt = 0;
3961         }
3962         /* Now making the CPU based no of vpath calculation
3963          * applicable for individual functions as well.
3964          */
3965         driver_config->g_no_cpus = 0;
3966         driver_config->vpath_per_dev = max_config_vpath;
3967
3968         driver_config->total_dev_cnt++;
3969         if (++driver_config->config_dev_cnt > max_config_dev) {
3970                 ret = 0;
3971                 goto _exit0;
3972         }
3973
3974         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
3975                 GFP_KERNEL);
3976         if (!device_config) {
3977                 ret = -ENOMEM;
3978                 vxge_debug_init(VXGE_ERR,
3979                         "device_config : malloc failed %s %d",
3980                         __FILE__, __LINE__);
3981                 goto _exit0;
3982         }
3983
3984         ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
3985         if (!ll_config) {
3986                 ret = -ENOMEM;
3987                 vxge_debug_init(VXGE_ERR,
3988                         "ll_config : malloc failed %s %d",
3989                         __FILE__, __LINE__);
3990                 goto _exit0;
3991         }
3992         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
3993         ll_config->intr_type = MSI_X;
3994         ll_config->napi_weight = NEW_NAPI_WEIGHT;
3995         ll_config->rth_steering = RTH_STEERING;
3996
3997         /* get the default configuration parameters */
3998         vxge_hw_device_config_default_get(device_config);
3999
4000         /* initialize configuration parameters */
4001         vxge_device_config_init(device_config, &ll_config->intr_type);
4002
4003         ret = pci_enable_device(pdev);
4004         if (ret) {
4005                 vxge_debug_init(VXGE_ERR,
4006                         "%s : can not enable PCI device", __func__);
4007                 goto _exit0;
4008         }
4009
4010         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4011                 vxge_debug_ll_config(VXGE_TRACE,
4012                         "%s : using 64bit DMA", __func__);
4013
4014                 high_dma = 1;
4015
4016                 if (pci_set_consistent_dma_mask(pdev,
4017                                                 DMA_BIT_MASK(64))) {
4018                         vxge_debug_init(VXGE_ERR,
4019                                 "%s : unable to obtain 64bit DMA for "
4020                                 "consistent allocations", __func__);
4021                         ret = -ENOMEM;
4022                         goto _exit1;
4023                 }
4024         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4025                 vxge_debug_ll_config(VXGE_TRACE,
4026                         "%s : using 32bit DMA", __func__);
4027         } else {
4028                 ret = -ENOMEM;
4029                 goto _exit1;
4030         }
4031
4032         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4033                 vxge_debug_init(VXGE_ERR,
4034                         "%s : request regions failed", __func__);
4035                 ret = -ENODEV;
4036                 goto _exit1;
4037         }
4038
4039         pci_set_master(pdev);
4040
4041         attr.bar0 = pci_ioremap_bar(pdev, 0);
4042         if (!attr.bar0) {
4043                 vxge_debug_init(VXGE_ERR,
4044                         "%s : cannot remap io memory bar0", __func__);
4045                 ret = -ENODEV;
4046                 goto _exit2;
4047         }
4048         vxge_debug_ll_config(VXGE_TRACE,
4049                 "pci ioremap bar0: %p:0x%llx",
4050                 attr.bar0,
4051                 (unsigned long long)pci_resource_start(pdev, 0));
4052
4053         status = vxge_hw_device_hw_info_get(attr.bar0,
4054                         &ll_config->device_hw_info);
4055         if (status != VXGE_HW_OK) {
4056                 vxge_debug_init(VXGE_ERR,
4057                         "%s: Reading of hardware info failed."
4058                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4059                 ret = -EINVAL;
4060                 goto _exit3;
4061         }
4062
4063         if (ll_config->device_hw_info.fw_version.major !=
4064                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4065                 vxge_debug_init(VXGE_ERR,
4066                         "%s: Incorrect firmware version."
4067                         "Please upgrade the firmware to version 1.x.x",
4068                         VXGE_DRIVER_NAME);
4069                 ret = -EINVAL;
4070                 goto _exit3;
4071         }
4072
4073         vpath_mask = ll_config->device_hw_info.vpath_mask;
4074         if (vpath_mask == 0) {
4075                 vxge_debug_ll_config(VXGE_TRACE,
4076                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4077                 ret = -EINVAL;
4078                 goto _exit3;
4079         }
4080
4081         vxge_debug_ll_config(VXGE_TRACE,
4082                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4083                 (unsigned long long)vpath_mask);
4084
4085         function_mode = ll_config->device_hw_info.function_mode;
4086         host_type = ll_config->device_hw_info.host_type;
4087         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4088                 ll_config->device_hw_info.func_id);
4089
4090         /* Check how many vpaths are available */
4091         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4092                 if (!((vpath_mask) & vxge_mBIT(i)))
4093                         continue;
4094                 max_vpath_supported++;
4095         }
4096
4097         if (new_device)
4098                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4099
4100         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4101         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4102                 (ll_config->intr_type != INTA) &&
4103                 (is_privileged == VXGE_HW_OK)) {
4104                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4105                         ? (max_config_dev - 1) : num_vfs);
4106                 if (ret)
4107                         vxge_debug_ll_config(VXGE_ERR,
4108                                 "Failed in enabling SRIOV mode: %d\n", ret);
4109         }
4110
4111         /*
4112          * Configure vpaths and get driver configured number of vpaths
4113          * which is less than or equal to the maximum vpaths per function.
4114          */
4115         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4116         if (!no_of_vpath) {
4117                 vxge_debug_ll_config(VXGE_ERR,
4118                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4119                 ret = 0;
4120                 goto _exit3;
4121         }
4122
4123         /* Setting driver callbacks */
4124         attr.uld_callbacks.link_up = vxge_callback_link_up;
4125         attr.uld_callbacks.link_down = vxge_callback_link_down;
4126         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4127
4128         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4129         if (status != VXGE_HW_OK) {
4130                 vxge_debug_init(VXGE_ERR,
4131                         "Failed to initialize device (%d)", status);
4132                         ret = -EINVAL;
4133                         goto _exit3;
4134         }
4135
4136         /* if FCS stripping is not disabled in MAC fail driver load */
4137         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4138                 vxge_debug_init(VXGE_ERR,
4139                         "%s: FCS stripping is not disabled in MAC"
4140                         " failing driver load", VXGE_DRIVER_NAME);
4141                 ret = -EINVAL;
4142                 goto _exit4;
4143         }
4144
4145         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4146
4147         /* set private device info */
4148         pci_set_drvdata(pdev, hldev);
4149
4150         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4151         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4152         ll_config->addr_learn_en = addr_learn_en;
4153         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4154         ll_config->rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4155         ll_config->rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4156         ll_config->rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4157         ll_config->rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4158         ll_config->rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4159         ll_config->rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4160         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4161         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4162         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4163
4164         if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4165                 &vdev)) {
4166                 ret = -EINVAL;
4167                 goto _exit4;
4168         }
4169
4170         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4171         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4172                 vxge_hw_device_trace_level_get(hldev));
4173
4174         /* set private HW device info */
4175         hldev->ndev = vdev->ndev;
4176         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4177         vdev->bar0 = attr.bar0;
4178         vdev->max_vpath_supported = max_vpath_supported;
4179         vdev->no_of_vpath = no_of_vpath;
4180
4181         /* Virtual Path count */
4182         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4183                 if (!vxge_bVALn(vpath_mask, i, 1))
4184                         continue;
4185                 if (j >= vdev->no_of_vpath)
4186                         break;
4187
4188                 vdev->vpaths[j].is_configured = 1;
4189                 vdev->vpaths[j].device_id = i;
4190                 vdev->vpaths[j].ring.driver_id = j;
4191                 vdev->vpaths[j].vdev = vdev;
4192                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4193                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4194                                 ll_config->device_hw_info.mac_addrs[i],
4195                                 ETH_ALEN);
4196
4197                 /* Initialize the mac address list header */
4198                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4199
4200                 vdev->vpaths[j].mac_addr_cnt = 0;
4201                 vdev->vpaths[j].mcast_addr_cnt = 0;
4202                 j++;
4203         }
4204         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4205         vdev->max_config_port = max_config_port;
4206
4207         vdev->vlan_tag_strip = vlan_tag_strip;
4208
4209         /* map the hashing selector table to the configured vpaths */
4210         for (i = 0; i < vdev->no_of_vpath; i++)
4211                 vdev->vpath_selector[i] = vpath_selector[i];
4212
4213         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4214
4215         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4216         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4217         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4218
4219         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4220                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4221
4222         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4223                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4224
4225         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4226                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4227
4228         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4229                 vdev->ndev->name, macaddr);
4230
4231         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4232                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4233
4234         vxge_debug_init(VXGE_TRACE,
4235                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4236                 ll_config->device_hw_info.fw_version.version,
4237                 ll_config->device_hw_info.fw_date.date);
4238
4239         if (new_device) {
4240                 switch (ll_config->device_hw_info.function_mode) {
4241                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4242                         vxge_debug_init(VXGE_TRACE,
4243                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4244                 break;
4245                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4246                         vxge_debug_init(VXGE_TRACE,
4247                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4248                 break;
4249                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4250                         vxge_debug_init(VXGE_TRACE,
4251                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4252                 break;
4253                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4254                         vxge_debug_init(VXGE_TRACE,
4255                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4256                 break;
4257                 }
4258         }
4259
4260         vxge_print_parm(vdev, vpath_mask);
4261
4262         /* Store the fw version for ethttool option */
4263         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4264         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4265         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4266
4267         /* Copy the station mac address to the list */
4268         for (i = 0; i < vdev->no_of_vpath; i++) {
4269                 entry = (struct vxge_mac_addrs *)
4270                                 kzalloc(sizeof(struct vxge_mac_addrs),
4271                                         GFP_KERNEL);
4272                 if (NULL == entry) {
4273                         vxge_debug_init(VXGE_ERR,
4274                                 "%s: mac_addr_list : memory allocation failed",
4275                                 vdev->ndev->name);
4276                         ret = -EPERM;
4277                         goto _exit5;
4278                 }
4279                 macaddr = (u8 *)&entry->macaddr;
4280                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4281                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4282                 vdev->vpaths[i].mac_addr_cnt = 1;
4283         }
4284
4285         kfree(device_config);
4286
4287         /*
4288          * INTA is shared in multi-function mode. This is unlike the INTA
4289          * implementation in MR mode, where each VH has its own INTA message.
4290          * - INTA is masked (disabled) as long as at least one function sets
4291          * its TITAN_MASK_ALL_INT.ALARM bit.
4292          * - INTA is unmasked (enabled) when all enabled functions have cleared
4293          * their own TITAN_MASK_ALL_INT.ALARM bit.
4294          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4295          * Though this driver leaves the top level interrupts unmasked while
4296          * leaving the required module interrupt bits masked on exit, there
4297          * could be a rougue driver around that does not follow this procedure
4298          * resulting in a failure to generate interrupts. The following code is
4299          * present to prevent such a failure.
4300          */
4301
4302         if (ll_config->device_hw_info.function_mode ==
4303                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4304                 if (vdev->config.intr_type == INTA)
4305                         vxge_hw_device_unmask_all(hldev);
4306
4307         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4308                 vdev->ndev->name, __func__, __LINE__);
4309
4310         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4311         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4312                 vxge_hw_device_trace_level_get(hldev));
4313
4314         kfree(ll_config);
4315         return 0;
4316
4317 _exit5:
4318         for (i = 0; i < vdev->no_of_vpath; i++)
4319                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4320
4321         vxge_device_unregister(hldev);
4322 _exit4:
4323         pci_disable_sriov(pdev);
4324         vxge_hw_device_terminate(hldev);
4325 _exit3:
4326         iounmap(attr.bar0);
4327 _exit2:
4328         pci_release_regions(pdev);
4329 _exit1:
4330         pci_disable_device(pdev);
4331 _exit0:
4332         kfree(ll_config);
4333         kfree(device_config);
4334         driver_config->config_dev_cnt--;
4335         pci_set_drvdata(pdev, NULL);
4336         return ret;
4337 }
4338
4339 /**
4340  * vxge_rem_nic - Free the PCI device
4341  * @pdev: structure containing the PCI related information of the device.
4342  * Description: This function is called by the Pci subsystem to release a
4343  * PCI device and free up all resource held up by the device.
4344  */
4345 static void __devexit
4346 vxge_remove(struct pci_dev *pdev)
4347 {
4348         struct __vxge_hw_device  *hldev;
4349         struct vxgedev *vdev = NULL;
4350         struct net_device *dev;
4351         int i = 0;
4352 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4353         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4354         u32 level_trace;
4355 #endif
4356
4357         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4358
4359         if (hldev == NULL)
4360                 return;
4361         dev = hldev->ndev;
4362         vdev = netdev_priv(dev);
4363
4364 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4365         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4366         level_trace = vdev->level_trace;
4367 #endif
4368         vxge_debug_entryexit(level_trace,
4369                 "%s:%d", __func__, __LINE__);
4370
4371         vxge_debug_init(level_trace,
4372                 "%s : removing PCI device...", __func__);
4373         vxge_device_unregister(hldev);
4374
4375         for (i = 0; i < vdev->no_of_vpath; i++) {
4376                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4377                 vdev->vpaths[i].mcast_addr_cnt = 0;
4378                 vdev->vpaths[i].mac_addr_cnt = 0;
4379         }
4380
4381         kfree(vdev->vpaths);
4382
4383         iounmap(vdev->bar0);
4384
4385         pci_disable_sriov(pdev);
4386
4387         /* we are safe to free it now */
4388         free_netdev(dev);
4389
4390         vxge_debug_init(level_trace,
4391                 "%s:%d  Device unregistered", __func__, __LINE__);
4392
4393         vxge_hw_device_terminate(hldev);
4394
4395         pci_disable_device(pdev);
4396         pci_release_regions(pdev);
4397         pci_set_drvdata(pdev, NULL);
4398         vxge_debug_entryexit(level_trace,
4399                 "%s:%d  Exiting...", __func__, __LINE__);
4400 }
4401
4402 static struct pci_error_handlers vxge_err_handler = {
4403         .error_detected = vxge_io_error_detected,
4404         .slot_reset = vxge_io_slot_reset,
4405         .resume = vxge_io_resume,
4406 };
4407
4408 static struct pci_driver vxge_driver = {
4409         .name = VXGE_DRIVER_NAME,
4410         .id_table = vxge_id_table,
4411         .probe = vxge_probe,
4412         .remove = __devexit_p(vxge_remove),
4413 #ifdef CONFIG_PM
4414         .suspend = vxge_pm_suspend,
4415         .resume = vxge_pm_resume,
4416 #endif
4417         .err_handler = &vxge_err_handler,
4418 };
4419
4420 static int __init
4421 vxge_starter(void)
4422 {
4423         int ret = 0;
4424
4425         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4426         pr_info("Driver version: %s\n", DRV_VERSION);
4427
4428         verify_bandwidth();
4429
4430         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4431         if (!driver_config)
4432                 return -ENOMEM;
4433
4434         ret = pci_register_driver(&vxge_driver);
4435
4436         if (driver_config->config_dev_cnt &&
4437            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4438                 vxge_debug_init(VXGE_ERR,
4439                         "%s: Configured %d of %d devices",
4440                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4441                         driver_config->total_dev_cnt);
4442
4443         if (ret)
4444                 kfree(driver_config);
4445
4446         return ret;
4447 }
4448
4449 static void __exit
4450 vxge_closer(void)
4451 {
4452         pci_unregister_driver(&vxge_driver);
4453         kfree(driver_config);
4454 }
4455 module_init(vxge_starter);
4456 module_exit(vxge_closer);