root/drivers/net/ethernet/neterion/vxge/vxge-main.c

DEFINITIONS

1. is_vxge_card_up
2. VXGE_COMPLETE_VPATH_TX
3. VXGE_COMPLETE_ALL_TX
4. VXGE_COMPLETE_ALL_RX
5. vxge_callback_link_up
6. vxge_callback_link_down
7. vxge_rx_alloc
8. vxge_rx_map
9. vxge_rx_initial_replenish
10. vxge_rx_complete
11. vxge_re_pre_post
12. vxge_post
13. vxge_rx_1b_compl
14. vxge_xmit_compl
15. vxge_get_vpath_no
16. vxge_search_mac_addr_in_list
17. vxge_mac_list_add
18. vxge_add_mac_addr
19. vxge_learn_mac
20. vxge_xmit
21. vxge_rx_term
22. vxge_tx_term
23. vxge_mac_list_del
24. vxge_del_mac_addr
25. vxge_set_multicast
26. vxge_set_mac_addr
27. vxge_vpath_intr_enable
28. vxge_vpath_intr_disable
29. vxge_search_mac_addr_in_da_table
30. vxge_restore_vpath_mac_addr
31. vxge_restore_vpath_vid_table
32. vxge_reset_vpath
33. vxge_config_ci_for_tti_rti
34. do_vxge_reset
35. vxge_reset
36. vxge_poll_msix
37. vxge_poll_inta
38. vxge_netpoll
39. vxge_rth_configure
40. vxge_reset_all_vpaths
41. vxge_close_vpaths
42. vxge_open_vpaths
43. adaptive_coalesce_tx_interrupts
44. adaptive_coalesce_rx_interrupts
45. vxge_isr_napi
46. vxge_tx_msix_handle
47. vxge_rx_msix_napi_handle
48. vxge_alarm_msix_handle
49. vxge_alloc_msix
50. vxge_enable_msix
51. vxge_rem_msix_isr
52. vxge_rem_isr
53. vxge_add_isr
54. vxge_poll_vp_reset
55. vxge_poll_vp_lockup
56. vxge_fix_features
57. vxge_set_features
58. vxge_open
59. vxge_free_mac_add_list
60. vxge_napi_del_all
61. do_vxge_close
62. vxge_close
63. vxge_change_mtu
64. vxge_get_stats64
65. vxge_timestamp_config
66. vxge_hwtstamp_set
67. vxge_hwtstamp_get
68. vxge_ioctl
69. vxge_tx_watchdog
70. vxge_vlan_rx_add_vid
71. vxge_vlan_rx_kill_vid
72. vxge_device_register
73. vxge_device_unregister
74. vxge_callback_crit_err
75. verify_bandwidth
76. vxge_config_vpaths
77. vxge_device_config_init
78. vxge_print_parm
79. vxge_pm_suspend
80. vxge_pm_resume
81. vxge_io_error_detected
82. vxge_io_slot_reset
83. vxge_io_resume
84. vxge_get_num_vfs
85. vxge_fw_upgrade
86. vxge_probe_fw_update
87. is_sriov_initialized
88. vxge_probe
89. vxge_remove
90. vxge_starter
91. vxge_closer

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2010 Exar Corp.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43 
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45 
  46 #include <linux/bitops.h>
  47 #include <linux/if_vlan.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/pci.h>
  50 #include <linux/slab.h>
  51 #include <linux/tcp.h>
  52 #include <net/ip.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/firmware.h>
  56 #include <linux/net_tstamp.h>
  57 #include <linux/prefetch.h>
  58 #include <linux/module.h>
  59 #include "vxge-main.h"
  60 #include "vxge-reg.h"
  61 
  62 MODULE_LICENSE("Dual BSD/GPL");
  63 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  64         "Virtualized Server Adapter");
  65 
  66 static const struct pci_device_id vxge_id_table[] = {
  67         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  68         PCI_ANY_ID},
  69         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  70         PCI_ANY_ID},
  71         {0}
  72 };
  73 
  74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  75 
  76 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  77 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  78 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  80 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  81 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  82 
  83 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  84                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  85 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  86         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  87 module_param_array(bw_percentage, uint, NULL, 0);
  88 
  89 static struct vxge_drv_config *driver_config;
  90 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
  91 
  92 static inline int is_vxge_card_up(struct vxgedev *vdev)
  93 {
  94         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  95 }
  96 
  97 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  98 {
  99         struct sk_buff **skb_ptr = NULL;
 100         struct sk_buff **temp;
 101 #define NR_SKB_COMPLETED 128
 102         struct sk_buff *completed[NR_SKB_COMPLETED];
 103         int more;
 104 
 105         do {
 106                 more = 0;
 107                 skb_ptr = completed;
 108 
 109                 if (__netif_tx_trylock(fifo->txq)) {
 110                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 111                                                 NR_SKB_COMPLETED, &more);
 112                         __netif_tx_unlock(fifo->txq);
 113                 }
 114 
 115                 /* free SKBs */
 116                 for (temp = completed; temp != skb_ptr; temp++)
 117                         dev_consume_skb_irq(*temp);
 118         } while (more);
 119 }
 120 
 121 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 122 {
 123         int i;
 124 
 125         /* Complete all transmits */
 126         for (i = 0; i < vdev->no_of_vpath; i++)
 127                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 128 }
 129 
 130 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 131 {
 132         int i;
 133         struct vxge_ring *ring;
 134 
 135         /* Complete all receives*/
 136         for (i = 0; i < vdev->no_of_vpath; i++) {
 137                 ring = &vdev->vpaths[i].ring;
 138                 vxge_hw_vpath_poll_rx(ring->handle);
 139         }
 140 }
 141 
 142 /*
 143  * vxge_callback_link_up
 144  *
 145  * This function is called during interrupt context to notify link up state
 146  * change.
 147  */
 148 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 149 {
 150         struct net_device *dev = hldev->ndev;
 151         struct vxgedev *vdev = netdev_priv(dev);
 152 
 153         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 154                 vdev->ndev->name, __func__, __LINE__);
 155         netdev_notice(vdev->ndev, "Link Up\n");
 156         vdev->stats.link_up++;
 157 
 158         netif_carrier_on(vdev->ndev);
 159         netif_tx_wake_all_queues(vdev->ndev);
 160 
 161         vxge_debug_entryexit(VXGE_TRACE,
 162                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 163 }
 164 
 165 /*
 166  * vxge_callback_link_down
 167  *
 168  * This function is called during interrupt context to notify link down state
 169  * change.
 170  */
 171 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 172 {
 173         struct net_device *dev = hldev->ndev;
 174         struct vxgedev *vdev = netdev_priv(dev);
 175 
 176         vxge_debug_entryexit(VXGE_TRACE,
 177                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 178         netdev_notice(vdev->ndev, "Link Down\n");
 179 
 180         vdev->stats.link_down++;
 181         netif_carrier_off(vdev->ndev);
 182         netif_tx_stop_all_queues(vdev->ndev);
 183 
 184         vxge_debug_entryexit(VXGE_TRACE,
 185                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 186 }
 187 
 188 /*
 189  * vxge_rx_alloc
 190  *
 191  * Allocate SKB.
 192  */
 193 static struct sk_buff *
 194 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 195 {
 196         struct net_device    *dev;
 197         struct sk_buff       *skb;
 198         struct vxge_rx_priv *rx_priv;
 199 
 200         dev = ring->ndev;
 201         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 202                 ring->ndev->name, __func__, __LINE__);
 203 
 204         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 205 
 206         /* try to allocate skb first. this one may fail */
 207         skb = netdev_alloc_skb(dev, skb_size +
 208         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 209         if (skb == NULL) {
 210                 vxge_debug_mem(VXGE_ERR,
 211                         "%s: out of memory to allocate SKB", dev->name);
 212                 ring->stats.skb_alloc_fail++;
 213                 return NULL;
 214         }
 215 
 216         vxge_debug_mem(VXGE_TRACE,
 217                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 218                 __func__, __LINE__, skb);
 219 
 220         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 221 
 222         rx_priv->skb = skb;
 223         rx_priv->skb_data = NULL;
 224         rx_priv->data_size = skb_size;
 225         vxge_debug_entryexit(VXGE_TRACE,
 226                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 227 
 228         return skb;
 229 }
 230 
 231 /*
 232  * vxge_rx_map
 233  */
 234 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 235 {
 236         struct vxge_rx_priv *rx_priv;
 237         dma_addr_t dma_addr;
 238 
 239         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 240                 ring->ndev->name, __func__, __LINE__);
 241         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 242 
 243         rx_priv->skb_data = rx_priv->skb->data;
 244         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 245                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 246 
 247         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 248                 ring->stats.pci_map_fail++;
 249                 return -EIO;
 250         }
 251         vxge_debug_mem(VXGE_TRACE,
 252                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 253                 ring->ndev->name, __func__, __LINE__,
 254                 (unsigned long long)dma_addr);
 255         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 256 
 257         rx_priv->data_dma = dma_addr;
 258         vxge_debug_entryexit(VXGE_TRACE,
 259                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 260 
 261         return 0;
 262 }
 263 
 264 /*
 265  * vxge_rx_initial_replenish
 266  * Allocation of RxD as an initial replenish procedure.
 267  */
 268 static enum vxge_hw_status
 269 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 270 {
 271         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 272         struct vxge_rx_priv *rx_priv;
 273 
 274         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 275                 ring->ndev->name, __func__, __LINE__);
 276         if (vxge_rx_alloc(dtrh, ring,
 277                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 278                 return VXGE_HW_FAIL;
 279 
 280         if (vxge_rx_map(dtrh, ring)) {
 281                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282                 dev_kfree_skb(rx_priv->skb);
 283 
 284                 return VXGE_HW_FAIL;
 285         }
 286         vxge_debug_entryexit(VXGE_TRACE,
 287                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 288 
 289         return VXGE_HW_OK;
 290 }
 291 
 292 static inline void
 293 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 294                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 295 {
 296 
 297         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 298                         ring->ndev->name, __func__, __LINE__);
 299         skb_record_rx_queue(skb, ring->driver_id);
 300         skb->protocol = eth_type_trans(skb, ring->ndev);
 301 
 302         u64_stats_update_begin(&ring->stats.syncp);
 303         ring->stats.rx_frms++;
 304         ring->stats.rx_bytes += pkt_length;
 305 
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ring->stats.rx_mcast++;
 308         u64_stats_update_end(&ring->stats.syncp);
 309 
 310         vxge_debug_rx(VXGE_TRACE,
 311                 "%s: %s:%d  skb protocol = %d",
 312                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 313 
 314         if (ext_info->vlan &&
 315             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 316                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 317         napi_gro_receive(ring->napi_p, skb);
 318 
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321 }
 322 
 323 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 324                                     struct vxge_rx_priv *rx_priv)
 325 {
 326         pci_dma_sync_single_for_device(ring->pdev,
 327                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 328 
 329         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 330         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 331 }
 332 
 333 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 334                              void *post_dtr, struct __vxge_hw_ring *ringh)
 335 {
 336         int dtr_count = *dtr_cnt;
 337         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 338                 if (*first_dtr)
 339                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 340                 *first_dtr = post_dtr;
 341         } else
 342                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 343         dtr_count++;
 344         *dtr_cnt = dtr_count;
 345 }
 346 
 347 /*
 348  * vxge_rx_1b_compl
 349  *
 350  * If the interrupt is because of a received frame or if the receive ring
 351  * contains fresh as yet un-processed frames, this function is called.
 352  */
 353 static enum vxge_hw_status
 354 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 355                  u8 t_code, void *userdata)
 356 {
 357         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 358         struct net_device *dev = ring->ndev;
 359         unsigned int dma_sizes;
 360         void *first_dtr = NULL;
 361         int dtr_cnt = 0;
 362         int data_size;
 363         dma_addr_t data_dma;
 364         int pkt_length;
 365         struct sk_buff *skb;
 366         struct vxge_rx_priv *rx_priv;
 367         struct vxge_hw_ring_rxd_info ext_info;
 368         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 369                 ring->ndev->name, __func__, __LINE__);
 370 
 371         if (ring->budget <= 0)
 372                 goto out;
 373 
 374         do {
 375                 prefetch((char *)dtr + L1_CACHE_BYTES);
 376                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 377                 skb = rx_priv->skb;
 378                 data_size = rx_priv->data_size;
 379                 data_dma = rx_priv->data_dma;
 380                 prefetch(rx_priv->skb_data);
 381 
 382                 vxge_debug_rx(VXGE_TRACE,
 383                         "%s: %s:%d  skb = 0x%p",
 384                         ring->ndev->name, __func__, __LINE__, skb);
 385 
 386                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 387                 pkt_length = dma_sizes;
 388 
 389                 pkt_length -= ETH_FCS_LEN;
 390 
 391                 vxge_debug_rx(VXGE_TRACE,
 392                         "%s: %s:%d  Packet Length = %d",
 393                         ring->ndev->name, __func__, __LINE__, pkt_length);
 394 
 395                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 396 
 397                 /* check skb validity */
 398                 vxge_assert(skb);
 399 
 400                 prefetch((char *)skb + L1_CACHE_BYTES);
 401                 if (unlikely(t_code)) {
 402                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 403                                 VXGE_HW_OK) {
 404 
 405                                 ring->stats.rx_errors++;
 406                                 vxge_debug_rx(VXGE_TRACE,
 407                                         "%s: %s :%d Rx T_code is %d",
 408                                         ring->ndev->name, __func__,
 409                                         __LINE__, t_code);
 410 
 411                                 /* If the t_code is not supported and if the
 412                                  * t_code is other than 0x5 (unparseable packet
 413                                  * such as unknown UPV6 header), Drop it !!!
 414                                  */
 415                                 vxge_re_pre_post(dtr, ring, rx_priv);
 416 
 417                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 418                                 ring->stats.rx_dropped++;
 419                                 continue;
 420                         }
 421                 }
 422 
 423                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 424                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 425                                 if (!vxge_rx_map(dtr, ring)) {
 426                                         skb_put(skb, pkt_length);
 427 
 428                                         pci_unmap_single(ring->pdev, data_dma,
 429                                                 data_size, PCI_DMA_FROMDEVICE);
 430 
 431                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 432                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 433                                                 ringh);
 434                                 } else {
 435                                         dev_kfree_skb(rx_priv->skb);
 436                                         rx_priv->skb = skb;
 437                                         rx_priv->data_size = data_size;
 438                                         vxge_re_pre_post(dtr, ring, rx_priv);
 439 
 440                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 441                                                 ringh);
 442                                         ring->stats.rx_dropped++;
 443                                         break;
 444                                 }
 445                         } else {
 446                                 vxge_re_pre_post(dtr, ring, rx_priv);
 447 
 448                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 449                                 ring->stats.rx_dropped++;
 450                                 break;
 451                         }
 452                 } else {
 453                         struct sk_buff *skb_up;
 454 
 455                         skb_up = netdev_alloc_skb(dev, pkt_length +
 456                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 457                         if (skb_up != NULL) {
 458                                 skb_reserve(skb_up,
 459                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 460 
 461                                 pci_dma_sync_single_for_cpu(ring->pdev,
 462                                         data_dma, data_size,
 463                                         PCI_DMA_FROMDEVICE);
 464 
 465                                 vxge_debug_mem(VXGE_TRACE,
 466                                         "%s: %s:%d  skb_up = %p",
 467                                         ring->ndev->name, __func__,
 468                                         __LINE__, skb);
 469                                 memcpy(skb_up->data, skb->data, pkt_length);
 470 
 471                                 vxge_re_pre_post(dtr, ring, rx_priv);
 472 
 473                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 474                                         ringh);
 475                                 /* will netif_rx small SKB instead */
 476                                 skb = skb_up;
 477                                 skb_put(skb, pkt_length);
 478                         } else {
 479                                 vxge_re_pre_post(dtr, ring, rx_priv);
 480 
 481                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 482                                 vxge_debug_rx(VXGE_ERR,
 483                                         "%s: vxge_rx_1b_compl: out of "
 484                                         "memory", dev->name);
 485                                 ring->stats.skb_alloc_fail++;
 486                                 break;
 487                         }
 488                 }
 489 
 490                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 491                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 492                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 493                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 494                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 495                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 496                 else
 497                         skb_checksum_none_assert(skb);
 498 
 499 
 500                 if (ring->rx_hwts) {
 501                         struct skb_shared_hwtstamps *skb_hwts;
 502                         u32 ns = *(u32 *)(skb->head + pkt_length);
 503 
 504                         skb_hwts = skb_hwtstamps(skb);
 505                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 506                 }
 507 
 508                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 509                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 510                  * if rss is disabled/enabled, so key off of that.
 511                  */
 512                 if (ext_info.rth_value)
 513                         skb_set_hash(skb, ext_info.rth_value,
 514                                      PKT_HASH_TYPE_L3);
 515 
 516                 vxge_rx_complete(ring, skb, ext_info.vlan,
 517                         pkt_length, &ext_info);
 518 
 519                 ring->budget--;
 520                 ring->pkts_processed++;
 521                 if (!ring->budget)
 522                         break;
 523 
 524         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 525                 &t_code) == VXGE_HW_OK);
 526 
 527         if (first_dtr)
 528                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 529 
 530 out:
 531         vxge_debug_entryexit(VXGE_TRACE,
 532                                 "%s:%d  Exiting...",
 533                                 __func__, __LINE__);
 534         return VXGE_HW_OK;
 535 }
 536 
 537 /*
 538  * vxge_xmit_compl
 539  *
 540  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 541  * this function is called. It identifies the last TxD whose buffer was
 542  * freed and frees all skbs whose data have already DMA'ed into the NICs
 543  * internal memory.
 544  */
 545 static enum vxge_hw_status
 546 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 547                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 548                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 549 {
 550         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 551         struct sk_buff *skb, **done_skb = *skb_ptr;
 552         int pkt_cnt = 0;
 553 
 554         vxge_debug_entryexit(VXGE_TRACE,
 555                 "%s:%d Entered....", __func__, __LINE__);
 556 
 557         do {
 558                 int frg_cnt;
 559                 skb_frag_t *frag;
 560                 int i = 0, j;
 561                 struct vxge_tx_priv *txd_priv =
 562                         vxge_hw_fifo_txdl_private_get(dtr);
 563 
 564                 skb = txd_priv->skb;
 565                 frg_cnt = skb_shinfo(skb)->nr_frags;
 566                 frag = &skb_shinfo(skb)->frags[0];
 567 
 568                 vxge_debug_tx(VXGE_TRACE,
 569                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 570                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 571                                 __LINE__, fifo_hw, dtr, t_code);
 572                 /* check skb validity */
 573                 vxge_assert(skb);
 574                 vxge_debug_tx(VXGE_TRACE,
 575                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 576                         fifo->ndev->name, __func__, __LINE__,
 577                         skb, txd_priv, frg_cnt);
 578                 if (unlikely(t_code)) {
 579                         fifo->stats.tx_errors++;
 580                         vxge_debug_tx(VXGE_ERR,
 581                                 "%s: tx: dtr %p completed due to "
 582                                 "error t_code %01x", fifo->ndev->name,
 583                                 dtr, t_code);
 584                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 585                 }
 586 
 587                 /*  for unfragmented skb */
 588                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 589                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 590 
 591                 for (j = 0; j < frg_cnt; j++) {
 592                         pci_unmap_page(fifo->pdev,
 593                                         txd_priv->dma_buffers[i++],
 594                                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 595                         frag += 1;
 596                 }
 597 
 598                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 599 
 600                 /* Updating the statistics block */
 601                 u64_stats_update_begin(&fifo->stats.syncp);
 602                 fifo->stats.tx_frms++;
 603                 fifo->stats.tx_bytes += skb->len;
 604                 u64_stats_update_end(&fifo->stats.syncp);
 605 
 606                 *done_skb++ = skb;
 607 
 608                 if (--nr_skb <= 0) {
 609                         *more = 1;
 610                         break;
 611                 }
 612 
 613                 pkt_cnt++;
 614                 if (pkt_cnt > fifo->indicate_max_pkts)
 615                         break;
 616 
 617         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 618                                 &dtr, &t_code) == VXGE_HW_OK);
 619 
 620         *skb_ptr = done_skb;
 621         if (netif_tx_queue_stopped(fifo->txq))
 622                 netif_tx_wake_queue(fifo->txq);
 623 
 624         vxge_debug_entryexit(VXGE_TRACE,
 625                                 "%s: %s:%d  Exiting...",
 626                                 fifo->ndev->name, __func__, __LINE__);
 627         return VXGE_HW_OK;
 628 }
 629 
 630 /* select a vpath to transmit the packet */
 631 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 632 {
 633         u16 queue_len, counter = 0;
 634         if (skb->protocol == htons(ETH_P_IP)) {
 635                 struct iphdr *ip;
 636                 struct tcphdr *th;
 637 
 638                 ip = ip_hdr(skb);
 639 
 640                 if (!ip_is_fragment(ip)) {
 641                         th = (struct tcphdr *)(((unsigned char *)ip) +
 642                                         ip->ihl*4);
 643 
 644                         queue_len = vdev->no_of_vpath;
 645                         counter = (ntohs(th->source) +
 646                                 ntohs(th->dest)) &
 647                                 vdev->vpath_selector[queue_len - 1];
 648                         if (counter >= queue_len)
 649                                 counter = queue_len - 1;
 650                 }
 651         }
 652         return counter;
 653 }
 654 
 655 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 656         struct vxge_vpath *vpath, u64 del_mac)
 657 {
 658         struct list_head *entry, *next;
 659         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 660                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 661                         return TRUE;
 662         }
 663         return FALSE;
 664 }
 665 
 666 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 667 {
 668         struct vxge_mac_addrs *new_mac_entry;
 669         u8 *mac_address = NULL;
 670 
 671         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 672                 return TRUE;
 673 
 674         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 675         if (!new_mac_entry) {
 676                 vxge_debug_mem(VXGE_ERR,
 677                         "%s: memory allocation failed",
 678                         VXGE_DRIVER_NAME);
 679                 return FALSE;
 680         }
 681 
 682         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 683 
 684         /* Copy the new mac address to the list */
 685         mac_address = (u8 *)&new_mac_entry->macaddr;
 686         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 687 
 688         new_mac_entry->state = mac->state;
 689         vpath->mac_addr_cnt++;
 690 
 691         if (is_multicast_ether_addr(mac->macaddr))
 692                 vpath->mcast_addr_cnt++;
 693 
 694         return TRUE;
 695 }
 696 
 697 /* Add a mac address to DA table */
 698 static enum vxge_hw_status
 699 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 700 {
 701         enum vxge_hw_status status = VXGE_HW_OK;
 702         struct vxge_vpath *vpath;
 703         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 704 
 705         if (is_multicast_ether_addr(mac->macaddr))
 706                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 707         else
 708                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 709 
 710         vpath = &vdev->vpaths[mac->vpath_no];
 711         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 712                                                 mac->macmask, duplicate_mode);
 713         if (status != VXGE_HW_OK) {
 714                 vxge_debug_init(VXGE_ERR,
 715                         "DA config add entry failed for vpath:%d",
 716                         vpath->device_id);
 717         } else
 718                 if (FALSE == vxge_mac_list_add(vpath, mac))
 719                         status = -EPERM;
 720 
 721         return status;
 722 }
 723 
 724 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 725 {
 726         struct macInfo mac_info;
 727         u8 *mac_address = NULL;
 728         u64 mac_addr = 0, vpath_vector = 0;
 729         int vpath_idx = 0;
 730         enum vxge_hw_status status = VXGE_HW_OK;
 731         struct vxge_vpath *vpath = NULL;
 732 
 733         mac_address = (u8 *)&mac_addr;
 734         memcpy(mac_address, mac_header, ETH_ALEN);
 735 
 736         /* Is this mac address already in the list? */
 737         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 738                 vpath = &vdev->vpaths[vpath_idx];
 739                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 740                         return vpath_idx;
 741         }
 742 
 743         memset(&mac_info, 0, sizeof(struct macInfo));
 744         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 745 
 746         /* Any vpath has room to add mac address to its da table? */
 747         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 748                 vpath = &vdev->vpaths[vpath_idx];
 749                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 750                         /* Add this mac address to this vpath */
 751                         mac_info.vpath_no = vpath_idx;
 752                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 753                         status = vxge_add_mac_addr(vdev, &mac_info);
 754                         if (status != VXGE_HW_OK)
 755                                 return -EPERM;
 756                         return vpath_idx;
 757                 }
 758         }
 759 
 760         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 761         vpath_idx = 0;
 762         mac_info.vpath_no = vpath_idx;
 763         /* Is the first vpath already selected as catch-basin ? */
 764         vpath = &vdev->vpaths[vpath_idx];
 765         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 766                 /* Add this mac address to this vpath */
 767                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 768                         return -EPERM;
 769                 return vpath_idx;
 770         }
 771 
 772         /* Select first vpath as catch-basin */
 773         vpath_vector = vxge_mBIT(vpath->device_id);
 774         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 775                                 vxge_hw_mgmt_reg_type_mrpcim,
 776                                 0,
 777                                 (ulong)offsetof(
 778                                         struct vxge_hw_mrpcim_reg,
 779                                         rts_mgr_cbasin_cfg),
 780                                 vpath_vector);
 781         if (status != VXGE_HW_OK) {
 782                 vxge_debug_tx(VXGE_ERR,
 783                         "%s: Unable to set the vpath-%d in catch-basin mode",
 784                         VXGE_DRIVER_NAME, vpath->device_id);
 785                 return -EPERM;
 786         }
 787 
 788         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 789                 return -EPERM;
 790 
 791         return vpath_idx;
 792 }
 793 
 794 /**
 795  * vxge_xmit
 796  * @skb : the socket buffer containing the Tx data.
 797  * @dev : device pointer.
 798  *
 799  * This function is the Tx entry point of the driver. Neterion NIC supports
 800  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 801 */
 802 static netdev_tx_t
 803 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 804 {
 805         struct vxge_fifo *fifo = NULL;
 806         void *dtr_priv;
 807         void *dtr = NULL;
 808         struct vxgedev *vdev = NULL;
 809         enum vxge_hw_status status;
 810         int frg_cnt, first_frg_len;
 811         skb_frag_t *frag;
 812         int i = 0, j = 0, avail;
 813         u64 dma_pointer;
 814         struct vxge_tx_priv *txdl_priv = NULL;
 815         struct __vxge_hw_fifo *fifo_hw;
 816         int offload_type;
 817         int vpath_no = 0;
 818 
 819         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 820                         dev->name, __func__, __LINE__);
 821 
 822         /* A buffer with no data will be dropped */
 823         if (unlikely(skb->len <= 0)) {
 824                 vxge_debug_tx(VXGE_ERR,
 825                         "%s: Buffer has no data..", dev->name);
 826                 dev_kfree_skb_any(skb);
 827                 return NETDEV_TX_OK;
 828         }
 829 
 830         vdev = netdev_priv(dev);
 831 
 832         if (unlikely(!is_vxge_card_up(vdev))) {
 833                 vxge_debug_tx(VXGE_ERR,
 834                         "%s: vdev not initialized", dev->name);
 835                 dev_kfree_skb_any(skb);
 836                 return NETDEV_TX_OK;
 837         }
 838 
 839         if (vdev->config.addr_learn_en) {
 840                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 841                 if (vpath_no == -EPERM) {
 842                         vxge_debug_tx(VXGE_ERR,
 843                                 "%s: Failed to store the mac address",
 844                                 dev->name);
 845                         dev_kfree_skb_any(skb);
 846                         return NETDEV_TX_OK;
 847                 }
 848         }
 849 
 850         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 851                 vpath_no = skb_get_queue_mapping(skb);
 852         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 853                 vpath_no = vxge_get_vpath_no(vdev, skb);
 854 
 855         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 856 
 857         if (vpath_no >= vdev->no_of_vpath)
 858                 vpath_no = 0;
 859 
 860         fifo = &vdev->vpaths[vpath_no].fifo;
 861         fifo_hw = fifo->handle;
 862 
 863         if (netif_tx_queue_stopped(fifo->txq))
 864                 return NETDEV_TX_BUSY;
 865 
 866         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 867         if (avail == 0) {
 868                 vxge_debug_tx(VXGE_ERR,
 869                         "%s: No free TXDs available", dev->name);
 870                 fifo->stats.txd_not_free++;
 871                 goto _exit0;
 872         }
 873 
 874         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 875          * completion will resume the queue.
 876          */
 877         if (avail == 1)
 878                 netif_tx_stop_queue(fifo->txq);
 879 
 880         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 881         if (unlikely(status != VXGE_HW_OK)) {
 882                 vxge_debug_tx(VXGE_ERR,
 883                    "%s: Out of descriptors .", dev->name);
 884                 fifo->stats.txd_out_of_desc++;
 885                 goto _exit0;
 886         }
 887 
 888         vxge_debug_tx(VXGE_TRACE,
 889                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 890                 dev->name, __func__, __LINE__,
 891                 fifo_hw, dtr, dtr_priv);
 892 
 893         if (skb_vlan_tag_present(skb)) {
 894                 u16 vlan_tag = skb_vlan_tag_get(skb);
 895                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 896         }
 897 
 898         first_frg_len = skb_headlen(skb);
 899 
 900         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 901                                 PCI_DMA_TODEVICE);
 902 
 903         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 904                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 905                 fifo->stats.pci_map_fail++;
 906                 goto _exit0;
 907         }
 908 
 909         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 910         txdl_priv->skb = skb;
 911         txdl_priv->dma_buffers[j] = dma_pointer;
 912 
 913         frg_cnt = skb_shinfo(skb)->nr_frags;
 914         vxge_debug_tx(VXGE_TRACE,
 915                         "%s: %s:%d skb = %p txdl_priv = %p "
 916                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 917                         __func__, __LINE__, skb, txdl_priv,
 918                         frg_cnt, (unsigned long long)dma_pointer);
 919 
 920         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 921                 first_frg_len);
 922 
 923         frag = &skb_shinfo(skb)->frags[0];
 924         for (i = 0; i < frg_cnt; i++) {
 925                 /* ignore 0 length fragment */
 926                 if (!skb_frag_size(frag))
 927                         continue;
 928 
 929                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 930                                                     0, skb_frag_size(frag),
 931                                                     DMA_TO_DEVICE);
 932 
 933                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 934                         goto _exit2;
 935                 vxge_debug_tx(VXGE_TRACE,
 936                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 937                                 dev->name, __func__, __LINE__, i,
 938                                 (unsigned long long)dma_pointer);
 939 
 940                 txdl_priv->dma_buffers[j] = dma_pointer;
 941                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 942                                         skb_frag_size(frag));
 943                 frag += 1;
 944         }
 945 
 946         offload_type = vxge_offload_type(skb);
 947 
 948         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 949                 int mss = vxge_tcp_mss(skb);
 950                 if (mss) {
 951                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 952                                 dev->name, __func__, __LINE__, mss);
 953                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 954                 } else {
 955                         vxge_assert(skb->len <=
 956                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 957                         vxge_assert(0);
 958                         goto _exit1;
 959                 }
 960         }
 961 
 962         if (skb->ip_summed == CHECKSUM_PARTIAL)
 963                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 964                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 965                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 966                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 967 
 968         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 969 
 970         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 971                 dev->name, __func__, __LINE__);
 972         return NETDEV_TX_OK;
 973 
 974 _exit2:
 975         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 976 _exit1:
 977         j = 0;
 978         frag = &skb_shinfo(skb)->frags[0];
 979 
 980         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 981                         skb_headlen(skb), PCI_DMA_TODEVICE);
 982 
 983         for (; j < i; j++) {
 984                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 985                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 986                 frag += 1;
 987         }
 988 
 989         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 990 _exit0:
 991         netif_tx_stop_queue(fifo->txq);
 992         dev_kfree_skb_any(skb);
 993 
 994         return NETDEV_TX_OK;
 995 }
 996 
 997 /*
 998  * vxge_rx_term
 999  *
1000  * Function will be called by hw function to abort all outstanding receive
1001  * descriptors.
1002  */
1003 static void
1004 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1005 {
1006         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1007         struct vxge_rx_priv *rx_priv =
1008                 vxge_hw_ring_rxd_private_get(dtrh);
1009 
1010         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1011                         ring->ndev->name, __func__, __LINE__);
1012         if (state != VXGE_HW_RXD_STATE_POSTED)
1013                 return;
1014 
1015         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1016                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1017 
1018         dev_kfree_skb(rx_priv->skb);
1019         rx_priv->skb_data = NULL;
1020 
1021         vxge_debug_entryexit(VXGE_TRACE,
1022                 "%s: %s:%d  Exiting...",
1023                 ring->ndev->name, __func__, __LINE__);
1024 }
1025 
1026 /*
1027  * vxge_tx_term
1028  *
1029  * Function will be called to abort all outstanding tx descriptors
1030  */
1031 static void
1032 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1033 {
1034         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1035         skb_frag_t *frag;
1036         int i = 0, j, frg_cnt;
1037         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1038         struct sk_buff *skb = txd_priv->skb;
1039 
1040         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1041 
1042         if (state != VXGE_HW_TXDL_STATE_POSTED)
1043                 return;
1044 
1045         /* check skb validity */
1046         vxge_assert(skb);
1047         frg_cnt = skb_shinfo(skb)->nr_frags;
1048         frag = &skb_shinfo(skb)->frags[0];
1049 
1050         /*  for unfragmented skb */
1051         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1052                 skb_headlen(skb), PCI_DMA_TODEVICE);
1053 
1054         for (j = 0; j < frg_cnt; j++) {
1055                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1056                                skb_frag_size(frag), PCI_DMA_TODEVICE);
1057                 frag += 1;
1058         }
1059 
1060         dev_kfree_skb(skb);
1061 
1062         vxge_debug_entryexit(VXGE_TRACE,
1063                 "%s:%d  Exiting...", __func__, __LINE__);
1064 }
1065 
1066 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1067 {
1068         struct list_head *entry, *next;
1069         u64 del_mac = 0;
1070         u8 *mac_address = (u8 *) (&del_mac);
1071 
1072         /* Copy the mac address to delete from the list */
1073         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1074 
1075         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1076                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1077                         list_del(entry);
1078                         kfree((struct vxge_mac_addrs *)entry);
1079                         vpath->mac_addr_cnt--;
1080 
1081                         if (is_multicast_ether_addr(mac->macaddr))
1082                                 vpath->mcast_addr_cnt--;
1083                         return TRUE;
1084                 }
1085         }
1086 
1087         return FALSE;
1088 }
1089 
1090 /* delete a mac address from DA table */
1091 static enum vxge_hw_status
1092 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1093 {
1094         enum vxge_hw_status status = VXGE_HW_OK;
1095         struct vxge_vpath *vpath;
1096 
1097         vpath = &vdev->vpaths[mac->vpath_no];
1098         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1099                                                 mac->macmask);
1100         if (status != VXGE_HW_OK) {
1101                 vxge_debug_init(VXGE_ERR,
1102                         "DA config delete entry failed for vpath:%d",
1103                         vpath->device_id);
1104         } else
1105                 vxge_mac_list_del(vpath, mac);
1106         return status;
1107 }
1108 
1109 /**
1110  * vxge_set_multicast
1111  * @dev: pointer to the device structure
1112  *
1113  * Entry point for multicast address enable/disable
1114  * This function is a driver entry point which gets called by the kernel
1115  * whenever multicast addresses must be enabled/disabled. This also gets
1116  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1117  * determine, if multicast address must be enabled or if promiscuous mode
1118  * is to be disabled etc.
1119  */
1120 static void vxge_set_multicast(struct net_device *dev)
1121 {
1122         struct netdev_hw_addr *ha;
1123         struct vxgedev *vdev;
1124         int i, mcast_cnt = 0;
1125         struct vxge_vpath *vpath;
1126         enum vxge_hw_status status = VXGE_HW_OK;
1127         struct macInfo mac_info;
1128         int vpath_idx = 0;
1129         struct vxge_mac_addrs *mac_entry;
1130         struct list_head *list_head;
1131         struct list_head *entry, *next;
1132         u8 *mac_address = NULL;
1133 
1134         vxge_debug_entryexit(VXGE_TRACE,
1135                 "%s:%d", __func__, __LINE__);
1136 
1137         vdev = netdev_priv(dev);
1138 
1139         if (unlikely(!is_vxge_card_up(vdev)))
1140                 return;
1141 
1142         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1143                 for (i = 0; i < vdev->no_of_vpath; i++) {
1144                         vpath = &vdev->vpaths[i];
1145                         vxge_assert(vpath->is_open);
1146                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1147                         if (status != VXGE_HW_OK)
1148                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1149                                                 "multicast, status %d", status);
1150                         vdev->all_multi_flg = 1;
1151                 }
1152         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1153                 for (i = 0; i < vdev->no_of_vpath; i++) {
1154                         vpath = &vdev->vpaths[i];
1155                         vxge_assert(vpath->is_open);
1156                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1157                         if (status != VXGE_HW_OK)
1158                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1159                                                 "multicast, status %d", status);
1160                         vdev->all_multi_flg = 0;
1161                 }
1162         }
1163 
1164 
1165         if (!vdev->config.addr_learn_en) {
1166                 for (i = 0; i < vdev->no_of_vpath; i++) {
1167                         vpath = &vdev->vpaths[i];
1168                         vxge_assert(vpath->is_open);
1169 
1170                         if (dev->flags & IFF_PROMISC)
1171                                 status = vxge_hw_vpath_promisc_enable(
1172                                         vpath->handle);
1173                         else
1174                                 status = vxge_hw_vpath_promisc_disable(
1175                                         vpath->handle);
1176                         if (status != VXGE_HW_OK)
1177                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1178                                         ", status %d", dev->flags&IFF_PROMISC ?
1179                                         "enable" : "disable", status);
1180                 }
1181         }
1182 
1183         memset(&mac_info, 0, sizeof(struct macInfo));
1184         /* Update individual M_CAST address list */
1185         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1186                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1187                 list_head = &vdev->vpaths[0].mac_addr_list;
1188                 if ((netdev_mc_count(dev) +
1189                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1190                                 vdev->vpaths[0].max_mac_addr_cnt)
1191                         goto _set_all_mcast;
1192 
1193                 /* Delete previous MC's */
1194                 for (i = 0; i < mcast_cnt; i++) {
1195                         list_for_each_safe(entry, next, list_head) {
1196                                 mac_entry = (struct vxge_mac_addrs *)entry;
1197                                 /* Copy the mac address to delete */
1198                                 mac_address = (u8 *)&mac_entry->macaddr;
1199                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1200 
1201                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1202                                         for (vpath_idx = 0; vpath_idx <
1203                                                 vdev->no_of_vpath;
1204                                                 vpath_idx++) {
1205                                                 mac_info.vpath_no = vpath_idx;
1206                                                 status = vxge_del_mac_addr(
1207                                                                 vdev,
1208                                                                 &mac_info);
1209                                         }
1210                                 }
1211                         }
1212                 }
1213 
1214                 /* Add new ones */
1215                 netdev_for_each_mc_addr(ha, dev) {
1216                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1217                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1218                                         vpath_idx++) {
1219                                 mac_info.vpath_no = vpath_idx;
1220                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1221                                 status = vxge_add_mac_addr(vdev, &mac_info);
1222                                 if (status != VXGE_HW_OK) {
1223                                         vxge_debug_init(VXGE_ERR,
1224                                                 "%s:%d Setting individual"
1225                                                 "multicast address failed",
1226                                                 __func__, __LINE__);
1227                                         goto _set_all_mcast;
1228                                 }
1229                         }
1230                 }
1231 
1232                 return;
1233 _set_all_mcast:
1234                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1235                 /* Delete previous MC's */
1236                 for (i = 0; i < mcast_cnt; i++) {
1237                         list_for_each_safe(entry, next, list_head) {
1238                                 mac_entry = (struct vxge_mac_addrs *)entry;
1239                                 /* Copy the mac address to delete */
1240                                 mac_address = (u8 *)&mac_entry->macaddr;
1241                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1242 
1243                                 if (is_multicast_ether_addr(mac_info.macaddr))
1244                                         break;
1245                         }
1246 
1247                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1248                                         vpath_idx++) {
1249                                 mac_info.vpath_no = vpath_idx;
1250                                 status = vxge_del_mac_addr(vdev, &mac_info);
1251                         }
1252                 }
1253 
1254                 /* Enable all multicast */
1255                 for (i = 0; i < vdev->no_of_vpath; i++) {
1256                         vpath = &vdev->vpaths[i];
1257                         vxge_assert(vpath->is_open);
1258 
1259                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1260                         if (status != VXGE_HW_OK) {
1261                                 vxge_debug_init(VXGE_ERR,
1262                                         "%s:%d Enabling all multicasts failed",
1263                                          __func__, __LINE__);
1264                         }
1265                         vdev->all_multi_flg = 1;
1266                 }
1267                 dev->flags |= IFF_ALLMULTI;
1268         }
1269 
1270         vxge_debug_entryexit(VXGE_TRACE,
1271                 "%s:%d  Exiting...", __func__, __LINE__);
1272 }
1273 
1274 /**
1275  * vxge_set_mac_addr
1276  * @dev: pointer to the device structure
1277  *
1278  * Update entry "0" (default MAC addr)
1279  */
1280 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1281 {
1282         struct sockaddr *addr = p;
1283         struct vxgedev *vdev;
1284         enum vxge_hw_status status = VXGE_HW_OK;
1285         struct macInfo mac_info_new, mac_info_old;
1286         int vpath_idx = 0;
1287 
1288         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1289 
1290         vdev = netdev_priv(dev);
1291 
1292         if (!is_valid_ether_addr(addr->sa_data))
1293                 return -EINVAL;
1294 
1295         memset(&mac_info_new, 0, sizeof(struct macInfo));
1296         memset(&mac_info_old, 0, sizeof(struct macInfo));
1297 
1298         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1299                 __func__, __LINE__);
1300 
1301         /* Get the old address */
1302         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1303 
1304         /* Copy the new address */
1305         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1306 
1307         /* First delete the old mac address from all the vpaths
1308         as we can't specify the index while adding new mac address */
1309         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1310                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1311                 if (!vpath->is_open) {
1312                         /* This can happen when this interface is added/removed
1313                         to the bonding interface. Delete this station address
1314                         from the linked list */
1315                         vxge_mac_list_del(vpath, &mac_info_old);
1316 
1317                         /* Add this new address to the linked list
1318                         for later restoring */
1319                         vxge_mac_list_add(vpath, &mac_info_new);
1320 
1321                         continue;
1322                 }
1323                 /* Delete the station address */
1324                 mac_info_old.vpath_no = vpath_idx;
1325                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1326         }
1327 
1328         if (unlikely(!is_vxge_card_up(vdev))) {
1329                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1330                 return VXGE_HW_OK;
1331         }
1332 
1333         /* Set this mac address to all the vpaths */
1334         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1335                 mac_info_new.vpath_no = vpath_idx;
1336                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1337                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1338                 if (status != VXGE_HW_OK)
1339                         return -EINVAL;
1340         }
1341 
1342         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1343 
1344         return status;
1345 }
1346 
1347 /*
1348  * vxge_vpath_intr_enable
1349  * @vdev: pointer to vdev
1350  * @vp_id: vpath for which to enable the interrupts
1351  *
1352  * Enables the interrupts for the vpath
1353 */
1354 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1355 {
1356         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1357         int msix_id = 0;
1358         int tim_msix_id[4] = {0, 1, 0, 0};
1359         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1360 
1361         vxge_hw_vpath_intr_enable(vpath->handle);
1362 
1363         if (vdev->config.intr_type == INTA)
1364                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1365         else {
1366                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1367                         alarm_msix_id);
1368 
1369                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1370                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1371                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1372 
1373                 /* enable the alarm vector */
1374                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1375                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1376                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1377         }
1378 }
1379 
1380 /*
1381  * vxge_vpath_intr_disable
1382  * @vdev: pointer to vdev
1383  * @vp_id: vpath for which to disable the interrupts
1384  *
1385  * Disables the interrupts for the vpath
1386 */
1387 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1388 {
1389         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1390         struct __vxge_hw_device *hldev;
1391         int msix_id;
1392 
1393         hldev = pci_get_drvdata(vdev->pdev);
1394 
1395         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1396 
1397         vxge_hw_vpath_intr_disable(vpath->handle);
1398 
1399         if (vdev->config.intr_type == INTA)
1400                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1401         else {
1402                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1403                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1404                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1405 
1406                 /* disable the alarm vector */
1407                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1408                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1409                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1410         }
1411 }
1412 
1413 /* list all mac addresses from DA table */
1414 static enum vxge_hw_status
1415 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1416 {
1417         enum vxge_hw_status status = VXGE_HW_OK;
1418         unsigned char macmask[ETH_ALEN];
1419         unsigned char macaddr[ETH_ALEN];
1420 
1421         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1422                                 macaddr, macmask);
1423         if (status != VXGE_HW_OK) {
1424                 vxge_debug_init(VXGE_ERR,
1425                         "DA config list entry failed for vpath:%d",
1426                         vpath->device_id);
1427                 return status;
1428         }
1429 
1430         while (!ether_addr_equal(mac->macaddr, macaddr)) {
1431                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1432                                 macaddr, macmask);
1433                 if (status != VXGE_HW_OK)
1434                         break;
1435         }
1436 
1437         return status;
1438 }
1439 
1440 /* Store all mac addresses from the list to the DA table */
1441 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1442 {
1443         enum vxge_hw_status status = VXGE_HW_OK;
1444         struct macInfo mac_info;
1445         u8 *mac_address = NULL;
1446         struct list_head *entry, *next;
1447 
1448         memset(&mac_info, 0, sizeof(struct macInfo));
1449 
1450         if (vpath->is_open) {
1451                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1452                         mac_address =
1453                                 (u8 *)&
1454                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1455                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1456                         ((struct vxge_mac_addrs *)entry)->state =
1457                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1458                         /* does this mac address already exist in da table? */
1459                         status = vxge_search_mac_addr_in_da_table(vpath,
1460                                 &mac_info);
1461                         if (status != VXGE_HW_OK) {
1462                                 /* Add this mac address to the DA table */
1463                                 status = vxge_hw_vpath_mac_addr_add(
1464                                         vpath->handle, mac_info.macaddr,
1465                                         mac_info.macmask,
1466                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1467                                 if (status != VXGE_HW_OK) {
1468                                         vxge_debug_init(VXGE_ERR,
1469                                             "DA add entry failed for vpath:%d",
1470                                             vpath->device_id);
1471                                         ((struct vxge_mac_addrs *)entry)->state
1472                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1473                                 }
1474                         }
1475                 }
1476         }
1477 
1478         return status;
1479 }
1480 
1481 /* Store all vlan ids from the list to the vid table */
1482 static enum vxge_hw_status
1483 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1484 {
1485         enum vxge_hw_status status = VXGE_HW_OK;
1486         struct vxgedev *vdev = vpath->vdev;
1487         u16 vid;
1488 
1489         if (!vpath->is_open)
1490                 return status;
1491 
1492         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1493                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1494 
1495         return status;
1496 }
1497 
1498 /*
1499  * vxge_reset_vpath
1500  * @vdev: pointer to vdev
1501  * @vp_id: vpath to reset
1502  *
1503  * Resets the vpath
1504 */
1505 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1506 {
1507         enum vxge_hw_status status = VXGE_HW_OK;
1508         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1509         int ret = 0;
1510 
1511         /* check if device is down already */
1512         if (unlikely(!is_vxge_card_up(vdev)))
1513                 return 0;
1514 
1515         /* is device reset already scheduled */
1516         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1517                 return 0;
1518 
1519         if (vpath->handle) {
1520                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1521                         if (is_vxge_card_up(vdev) &&
1522                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1523                                         != VXGE_HW_OK) {
1524                                 vxge_debug_init(VXGE_ERR,
1525                                         "vxge_hw_vpath_recover_from_reset"
1526                                         "failed for vpath:%d", vp_id);
1527                                 return status;
1528                         }
1529                 } else {
1530                         vxge_debug_init(VXGE_ERR,
1531                                 "vxge_hw_vpath_reset failed for"
1532                                 "vpath:%d", vp_id);
1533                         return status;
1534                 }
1535         } else
1536                 return VXGE_HW_FAIL;
1537 
1538         vxge_restore_vpath_mac_addr(vpath);
1539         vxge_restore_vpath_vid_table(vpath);
1540 
1541         /* Enable all broadcast */
1542         vxge_hw_vpath_bcast_enable(vpath->handle);
1543 
1544         /* Enable all multicast */
1545         if (vdev->all_multi_flg) {
1546                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1547                 if (status != VXGE_HW_OK)
1548                         vxge_debug_init(VXGE_ERR,
1549                                 "%s:%d Enabling multicast failed",
1550                                 __func__, __LINE__);
1551         }
1552 
1553         /* Enable the interrupts */
1554         vxge_vpath_intr_enable(vdev, vp_id);
1555 
1556         smp_wmb();
1557 
1558         /* Enable the flow of traffic through the vpath */
1559         vxge_hw_vpath_enable(vpath->handle);
1560 
1561         smp_wmb();
1562         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1563         vpath->ring.last_status = VXGE_HW_OK;
1564 
1565         /* Vpath reset done */
1566         clear_bit(vp_id, &vdev->vp_reset);
1567 
1568         /* Start the vpath queue */
1569         if (netif_tx_queue_stopped(vpath->fifo.txq))
1570                 netif_tx_wake_queue(vpath->fifo.txq);
1571 
1572         return ret;
1573 }
1574 
1575 /* Configure CI */
1576 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1577 {
1578         int i = 0;
1579 
1580         /* Enable CI for RTI */
1581         if (vdev->config.intr_type == MSI_X) {
1582                 for (i = 0; i < vdev->no_of_vpath; i++) {
1583                         struct __vxge_hw_ring *hw_ring;
1584 
1585                         hw_ring = vdev->vpaths[i].ring.handle;
1586                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1587                 }
1588         }
1589 
1590         /* Enable CI for TTI */
1591         for (i = 0; i < vdev->no_of_vpath; i++) {
1592                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1593                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1594                 /*
1595                  * For Inta (with or without napi), Set CI ON for only one
1596                  * vpath. (Have only one free running timer).
1597                  */
1598                 if ((vdev->config.intr_type == INTA) && (i == 0))
1599                         break;
1600         }
1601 
1602         return;
1603 }
1604 
1605 static int do_vxge_reset(struct vxgedev *vdev, int event)
1606 {
1607         enum vxge_hw_status status;
1608         int ret = 0, vp_id, i;
1609 
1610         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1611 
1612         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1613                 /* check if device is down already */
1614                 if (unlikely(!is_vxge_card_up(vdev)))
1615                         return 0;
1616 
1617                 /* is reset already scheduled */
1618                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1619                         return 0;
1620         }
1621 
1622         if (event == VXGE_LL_FULL_RESET) {
1623                 netif_carrier_off(vdev->ndev);
1624 
1625                 /* wait for all the vpath reset to complete */
1626                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1627                         while (test_bit(vp_id, &vdev->vp_reset))
1628                                 msleep(50);
1629                 }
1630 
1631                 netif_carrier_on(vdev->ndev);
1632 
1633                 /* if execution mode is set to debug, don't reset the adapter */
1634                 if (unlikely(vdev->exec_mode)) {
1635                         vxge_debug_init(VXGE_ERR,
1636                                 "%s: execution mode is debug, returning..",
1637                                 vdev->ndev->name);
1638                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1639                         netif_tx_stop_all_queues(vdev->ndev);
1640                         return 0;
1641                 }
1642         }
1643 
1644         if (event == VXGE_LL_FULL_RESET) {
1645                 vxge_hw_device_wait_receive_idle(vdev->devh);
1646                 vxge_hw_device_intr_disable(vdev->devh);
1647 
1648                 switch (vdev->cric_err_event) {
1649                 case VXGE_HW_EVENT_UNKNOWN:
1650                         netif_tx_stop_all_queues(vdev->ndev);
1651                         vxge_debug_init(VXGE_ERR,
1652                                 "fatal: %s: Disabling device due to"
1653                                 "unknown error",
1654                                 vdev->ndev->name);
1655                         ret = -EPERM;
1656                         goto out;
1657                 case VXGE_HW_EVENT_RESET_START:
1658                         break;
1659                 case VXGE_HW_EVENT_RESET_COMPLETE:
1660                 case VXGE_HW_EVENT_LINK_DOWN:
1661                 case VXGE_HW_EVENT_LINK_UP:
1662                 case VXGE_HW_EVENT_ALARM_CLEARED:
1663                 case VXGE_HW_EVENT_ECCERR:
1664                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1665                         ret = -EPERM;
1666                         goto out;
1667                 case VXGE_HW_EVENT_FIFO_ERR:
1668                 case VXGE_HW_EVENT_VPATH_ERR:
1669                         break;
1670                 case VXGE_HW_EVENT_CRITICAL_ERR:
1671                         netif_tx_stop_all_queues(vdev->ndev);
1672                         vxge_debug_init(VXGE_ERR,
1673                                 "fatal: %s: Disabling device due to"
1674                                 "serious error",
1675                                 vdev->ndev->name);
1676                         /* SOP or device reset required */
1677                         /* This event is not currently used */
1678                         ret = -EPERM;
1679                         goto out;
1680                 case VXGE_HW_EVENT_SERR:
1681                         netif_tx_stop_all_queues(vdev->ndev);
1682                         vxge_debug_init(VXGE_ERR,
1683                                 "fatal: %s: Disabling device due to"
1684                                 "serious error",
1685                                 vdev->ndev->name);
1686                         ret = -EPERM;
1687                         goto out;
1688                 case VXGE_HW_EVENT_SRPCIM_SERR:
1689                 case VXGE_HW_EVENT_MRPCIM_SERR:
1690                         ret = -EPERM;
1691                         goto out;
1692                 case VXGE_HW_EVENT_SLOT_FREEZE:
1693                         netif_tx_stop_all_queues(vdev->ndev);
1694                         vxge_debug_init(VXGE_ERR,
1695                                 "fatal: %s: Disabling device due to"
1696                                 "slot freeze",
1697                                 vdev->ndev->name);
1698                         ret = -EPERM;
1699                         goto out;
1700                 default:
1701                         break;
1702 
1703                 }
1704         }
1705 
1706         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1707                 netif_tx_stop_all_queues(vdev->ndev);
1708 
1709         if (event == VXGE_LL_FULL_RESET) {
1710                 status = vxge_reset_all_vpaths(vdev);
1711                 if (status != VXGE_HW_OK) {
1712                         vxge_debug_init(VXGE_ERR,
1713                                 "fatal: %s: can not reset vpaths",
1714                                 vdev->ndev->name);
1715                         ret = -EPERM;
1716                         goto out;
1717                 }
1718         }
1719 
1720         if (event == VXGE_LL_COMPL_RESET) {
1721                 for (i = 0; i < vdev->no_of_vpath; i++)
1722                         if (vdev->vpaths[i].handle) {
1723                                 if (vxge_hw_vpath_recover_from_reset(
1724                                         vdev->vpaths[i].handle)
1725                                                 != VXGE_HW_OK) {
1726                                         vxge_debug_init(VXGE_ERR,
1727                                                 "vxge_hw_vpath_recover_"
1728                                                 "from_reset failed for vpath: "
1729                                                 "%d", i);
1730                                         ret = -EPERM;
1731                                         goto out;
1732                                 }
1733                                 } else {
1734                                         vxge_debug_init(VXGE_ERR,
1735                                         "vxge_hw_vpath_reset failed for "
1736                                                 "vpath:%d", i);
1737                                         ret = -EPERM;
1738                                         goto out;
1739                                 }
1740         }
1741 
1742         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1743                 /* Reprogram the DA table with populated mac addresses */
1744                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1745                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1746                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1747                 }
1748 
1749                 /* enable vpath interrupts */
1750                 for (i = 0; i < vdev->no_of_vpath; i++)
1751                         vxge_vpath_intr_enable(vdev, i);
1752 
1753                 vxge_hw_device_intr_enable(vdev->devh);
1754 
1755                 smp_wmb();
1756 
1757                 /* Indicate card up */
1758                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1759 
1760                 /* Get the traffic to flow through the vpaths */
1761                 for (i = 0; i < vdev->no_of_vpath; i++) {
1762                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1763                         smp_wmb();
1764                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1765                 }
1766 
1767                 netif_tx_wake_all_queues(vdev->ndev);
1768         }
1769 
1770         /* configure CI */
1771         vxge_config_ci_for_tti_rti(vdev);
1772 
1773 out:
1774         vxge_debug_entryexit(VXGE_TRACE,
1775                 "%s:%d  Exiting...", __func__, __LINE__);
1776 
1777         /* Indicate reset done */
1778         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1779                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1780         return ret;
1781 }
1782 
1783 /*
1784  * vxge_reset
1785  * @vdev: pointer to ll device
1786  *
1787  * driver may reset the chip on events of serr, eccerr, etc
1788  */
1789 static void vxge_reset(struct work_struct *work)
1790 {
1791         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1792 
1793         if (!netif_running(vdev->ndev))
1794                 return;
1795 
1796         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1797 }
1798 
1799 /**
1800  * vxge_poll - Receive handler when Receive Polling is used.
1801  * @dev: pointer to the device structure.
1802  * @budget: Number of packets budgeted to be processed in this iteration.
1803  *
1804  * This function comes into picture only if Receive side is being handled
1805  * through polling (called NAPI in linux). It mostly does what the normal
1806  * Rx interrupt handler does in terms of descriptor and packet processing
1807  * but not in an interrupt context. Also it will process a specified number
1808  * of packets at most in one iteration. This value is passed down by the
1809  * kernel as the function argument 'budget'.
1810  */
1811 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1812 {
1813         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1814         int pkts_processed;
1815         int budget_org = budget;
1816 
1817         ring->budget = budget;
1818         ring->pkts_processed = 0;
1819         vxge_hw_vpath_poll_rx(ring->handle);
1820         pkts_processed = ring->pkts_processed;
1821 
1822         if (pkts_processed < budget_org) {
1823                 napi_complete_done(napi, pkts_processed);
1824 
1825                 /* Re enable the Rx interrupts for the vpath */
1826                 vxge_hw_channel_msix_unmask(
1827                                 (struct __vxge_hw_channel *)ring->handle,
1828                                 ring->rx_vector_no);
1829         }
1830 
1831         /* We are copying and returning the local variable, in case if after
1832          * clearing the msix interrupt above, if the interrupt fires right
1833          * away which can preempt this NAPI thread */
1834         return pkts_processed;
1835 }
1836 
1837 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1838 {
1839         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1840         int pkts_processed = 0;
1841         int i;
1842         int budget_org = budget;
1843         struct vxge_ring *ring;
1844 
1845         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1846 
1847         for (i = 0; i < vdev->no_of_vpath; i++) {
1848                 ring = &vdev->vpaths[i].ring;
1849                 ring->budget = budget;
1850                 ring->pkts_processed = 0;
1851                 vxge_hw_vpath_poll_rx(ring->handle);
1852                 pkts_processed += ring->pkts_processed;
1853                 budget -= ring->pkts_processed;
1854                 if (budget <= 0)
1855                         break;
1856         }
1857 
1858         VXGE_COMPLETE_ALL_TX(vdev);
1859 
1860         if (pkts_processed < budget_org) {
1861                 napi_complete_done(napi, pkts_processed);
1862                 /* Re enable the Rx interrupts for the ring */
1863                 vxge_hw_device_unmask_all(hldev);
1864                 vxge_hw_device_flush_io(hldev);
1865         }
1866 
1867         return pkts_processed;
1868 }
1869 
1870 #ifdef CONFIG_NET_POLL_CONTROLLER
1871 /**
1872  * vxge_netpoll - netpoll event handler entry point
1873  * @dev : pointer to the device structure.
1874  * Description:
1875  *      This function will be called by upper layer to check for events on the
1876  * interface in situations where interrupts are disabled. It is used for
1877  * specific in-kernel networking tasks, such as remote consoles and kernel
1878  * debugging over the network (example netdump in RedHat).
1879  */
1880 static void vxge_netpoll(struct net_device *dev)
1881 {
1882         struct vxgedev *vdev = netdev_priv(dev);
1883         struct pci_dev *pdev = vdev->pdev;
1884         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1885         const int irq = pdev->irq;
1886 
1887         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1888 
1889         if (pci_channel_offline(pdev))
1890                 return;
1891 
1892         disable_irq(irq);
1893         vxge_hw_device_clear_tx_rx(hldev);
1894 
1895         vxge_hw_device_clear_tx_rx(hldev);
1896         VXGE_COMPLETE_ALL_RX(vdev);
1897         VXGE_COMPLETE_ALL_TX(vdev);
1898 
1899         enable_irq(irq);
1900 
1901         vxge_debug_entryexit(VXGE_TRACE,
1902                 "%s:%d  Exiting...", __func__, __LINE__);
1903 }
1904 #endif
1905 
1906 /* RTH configuration */
1907 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1908 {
1909         enum vxge_hw_status status = VXGE_HW_OK;
1910         struct vxge_hw_rth_hash_types hash_types;
1911         u8 itable[256] = {0}; /* indirection table */
1912         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1913         int index;
1914 
1915         /*
1916          * Filling
1917          *      - itable with bucket numbers
1918          *      - mtable with bucket-to-vpath mapping
1919          */
1920         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1921                 itable[index] = index;
1922                 mtable[index] = index % vdev->no_of_vpath;
1923         }
1924 
1925         /* set indirection table, bucket-to-vpath mapping */
1926         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1927                                                 vdev->no_of_vpath,
1928                                                 mtable, itable,
1929                                                 vdev->config.rth_bkt_sz);
1930         if (status != VXGE_HW_OK) {
1931                 vxge_debug_init(VXGE_ERR,
1932                         "RTH indirection table configuration failed "
1933                         "for vpath:%d", vdev->vpaths[0].device_id);
1934                 return status;
1935         }
1936 
1937         /* Fill RTH hash types */
1938         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1939         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1940         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1941         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1942         hash_types.hash_type_tcpipv6ex_en =
1943                                         vdev->config.rth_hash_type_tcpipv6ex;
1944         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1945 
1946         /*
1947          * Because the itable_set() method uses the active_table field
1948          * for the target virtual path the RTH config should be updated
1949          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1950          * when steering frames.
1951          */
1952         for (index = 0; index < vdev->no_of_vpath; index++) {
1953                 status = vxge_hw_vpath_rts_rth_set(
1954                                 vdev->vpaths[index].handle,
1955                                 vdev->config.rth_algorithm,
1956                                 &hash_types,
1957                                 vdev->config.rth_bkt_sz);
1958                 if (status != VXGE_HW_OK) {
1959                         vxge_debug_init(VXGE_ERR,
1960                                 "RTH configuration failed for vpath:%d",
1961                                 vdev->vpaths[index].device_id);
1962                         return status;
1963                 }
1964         }
1965 
1966         return status;
1967 }
1968 
1969 /* reset vpaths */
1970 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1971 {
1972         enum vxge_hw_status status = VXGE_HW_OK;
1973         struct vxge_vpath *vpath;
1974         int i;
1975 
1976         for (i = 0; i < vdev->no_of_vpath; i++) {
1977                 vpath = &vdev->vpaths[i];
1978                 if (vpath->handle) {
1979                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1980                                 if (is_vxge_card_up(vdev) &&
1981                                         vxge_hw_vpath_recover_from_reset(
1982                                                 vpath->handle) != VXGE_HW_OK) {
1983                                         vxge_debug_init(VXGE_ERR,
1984                                                 "vxge_hw_vpath_recover_"
1985                                                 "from_reset failed for vpath: "
1986                                                 "%d", i);
1987                                         return status;
1988                                 }
1989                         } else {
1990                                 vxge_debug_init(VXGE_ERR,
1991                                         "vxge_hw_vpath_reset failed for "
1992                                         "vpath:%d", i);
1993                                 return status;
1994                         }
1995                 }
1996         }
1997 
1998         return status;
1999 }
2000 
2001 /* close vpaths */
2002 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2003 {
2004         struct vxge_vpath *vpath;
2005         int i;
2006 
2007         for (i = index; i < vdev->no_of_vpath; i++) {
2008                 vpath = &vdev->vpaths[i];
2009 
2010                 if (vpath->handle && vpath->is_open) {
2011                         vxge_hw_vpath_close(vpath->handle);
2012                         vdev->stats.vpaths_open--;
2013                 }
2014                 vpath->is_open = 0;
2015                 vpath->handle = NULL;
2016         }
2017 }
2018 
2019 /* open vpaths */
2020 static int vxge_open_vpaths(struct vxgedev *vdev)
2021 {
2022         struct vxge_hw_vpath_attr attr;
2023         enum vxge_hw_status status;
2024         struct vxge_vpath *vpath;
2025         u32 vp_id = 0;
2026         int i;
2027 
2028         for (i = 0; i < vdev->no_of_vpath; i++) {
2029                 vpath = &vdev->vpaths[i];
2030                 vxge_assert(vpath->is_configured);
2031 
2032                 if (!vdev->titan1) {
2033                         struct vxge_hw_vp_config *vcfg;
2034                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2035 
2036                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2037                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2038                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2039                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2040                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2041                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2042                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2043                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2044                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2045                 }
2046 
2047                 attr.vp_id = vpath->device_id;
2048                 attr.fifo_attr.callback = vxge_xmit_compl;
2049                 attr.fifo_attr.txdl_term = vxge_tx_term;
2050                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2051                 attr.fifo_attr.userdata = &vpath->fifo;
2052 
2053                 attr.ring_attr.callback = vxge_rx_1b_compl;
2054                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2055                 attr.ring_attr.rxd_term = vxge_rx_term;
2056                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2057                 attr.ring_attr.userdata = &vpath->ring;
2058 
2059                 vpath->ring.ndev = vdev->ndev;
2060                 vpath->ring.pdev = vdev->pdev;
2061 
2062                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2063                 if (status == VXGE_HW_OK) {
2064                         vpath->fifo.handle =
2065                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2066                         vpath->ring.handle =
2067                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2068                         vpath->fifo.tx_steering_type =
2069                                 vdev->config.tx_steering_type;
2070                         vpath->fifo.ndev = vdev->ndev;
2071                         vpath->fifo.pdev = vdev->pdev;
2072 
2073                         u64_stats_init(&vpath->fifo.stats.syncp);
2074                         u64_stats_init(&vpath->ring.stats.syncp);
2075 
2076                         if (vdev->config.tx_steering_type)
2077                                 vpath->fifo.txq =
2078                                         netdev_get_tx_queue(vdev->ndev, i);
2079                         else
2080                                 vpath->fifo.txq =
2081                                         netdev_get_tx_queue(vdev->ndev, 0);
2082                         vpath->fifo.indicate_max_pkts =
2083                                 vdev->config.fifo_indicate_max_pkts;
2084                         vpath->fifo.tx_vector_no = 0;
2085                         vpath->ring.rx_vector_no = 0;
2086                         vpath->ring.rx_hwts = vdev->rx_hwts;
2087                         vpath->is_open = 1;
2088                         vdev->vp_handles[i] = vpath->handle;
2089                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2090                         vdev->stats.vpaths_open++;
2091                 } else {
2092                         vdev->stats.vpath_open_fail++;
2093                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2094                                         "open with status: %d",
2095                                         vdev->ndev->name, vpath->device_id,
2096                                         status);
2097                         vxge_close_vpaths(vdev, 0);
2098                         return -EPERM;
2099                 }
2100 
2101                 vp_id = vpath->handle->vpath->vp_id;
2102                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2103         }
2104 
2105         return VXGE_HW_OK;
2106 }
2107 
2108 /**
2109  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2110  *  if the interrupts are not within a range
2111  *  @fifo: pointer to transmit fifo structure
2112  *  Description: The function changes boundary timer and restriction timer
2113  *  value depends on the traffic
2114  *  Return Value: None
2115  */
2116 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2117 {
2118         fifo->interrupt_count++;
2119         if (time_before(fifo->jiffies + HZ / 100, jiffies)) {
2120                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2121 
2122                 fifo->jiffies = jiffies;
2123                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2124                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2125                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2126                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2127                 } else if (hw_fifo->rtimer != 0) {
2128                         hw_fifo->rtimer = 0;
2129                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2130                 }
2131                 fifo->interrupt_count = 0;
2132         }
2133 }
2134 
2135 /**
2136  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2137  *  if the interrupts are not within a range
2138  *  @ring: pointer to receive ring structure
2139  *  Description: The function increases of decreases the packet counts within
2140  *  the ranges of traffic utilization, if the interrupts due to this ring are
2141  *  not within a fixed range.
2142  *  Return Value: Nothing
2143  */
2144 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2145 {
2146         ring->interrupt_count++;
2147         if (time_before(ring->jiffies + HZ / 100, jiffies)) {
2148                 struct __vxge_hw_ring *hw_ring = ring->handle;
2149 
2150                 ring->jiffies = jiffies;
2151                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2152                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2153                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2154                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2155                 } else if (hw_ring->rtimer != 0) {
2156                         hw_ring->rtimer = 0;
2157                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2158                 }
2159                 ring->interrupt_count = 0;
2160         }
2161 }
2162 
2163 /*
2164  *  vxge_isr_napi
2165  *  @irq: the irq of the device.
2166  *  @dev_id: a void pointer to the hldev structure of the Titan device
2167  *  @ptregs: pointer to the registers pushed on the stack.
2168  *
2169  *  This function is the ISR handler of the device when napi is enabled. It
2170  *  identifies the reason for the interrupt and calls the relevant service
2171  *  routines.
2172  */
2173 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2174 {
2175         struct __vxge_hw_device *hldev;
2176         u64 reason;
2177         enum vxge_hw_status status;
2178         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2179 
2180         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2181 
2182         hldev = pci_get_drvdata(vdev->pdev);
2183 
2184         if (pci_channel_offline(vdev->pdev))
2185                 return IRQ_NONE;
2186 
2187         if (unlikely(!is_vxge_card_up(vdev)))
2188                 return IRQ_HANDLED;
2189 
2190         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2191         if (status == VXGE_HW_OK) {
2192                 vxge_hw_device_mask_all(hldev);
2193 
2194                 if (reason &
2195                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2196                         vdev->vpaths_deployed >>
2197                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2198 
2199                         vxge_hw_device_clear_tx_rx(hldev);
2200                         napi_schedule(&vdev->napi);
2201                         vxge_debug_intr(VXGE_TRACE,
2202                                 "%s:%d  Exiting...", __func__, __LINE__);
2203                         return IRQ_HANDLED;
2204                 } else
2205                         vxge_hw_device_unmask_all(hldev);
2206         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2207                 (status == VXGE_HW_ERR_CRITICAL) ||
2208                 (status == VXGE_HW_ERR_FIFO))) {
2209                 vxge_hw_device_mask_all(hldev);
2210                 vxge_hw_device_flush_io(hldev);
2211                 return IRQ_HANDLED;
2212         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2213                 return IRQ_HANDLED;
2214 
2215         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2216         return IRQ_NONE;
2217 }
2218 
2219 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2220 {
2221         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2222 
2223         adaptive_coalesce_tx_interrupts(fifo);
2224 
2225         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2226                                   fifo->tx_vector_no);
2227 
2228         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2229                                    fifo->tx_vector_no);
2230 
2231         VXGE_COMPLETE_VPATH_TX(fifo);
2232 
2233         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2234                                     fifo->tx_vector_no);
2235 
2236         return IRQ_HANDLED;
2237 }
2238 
2239 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2240 {
2241         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2242 
2243         adaptive_coalesce_rx_interrupts(ring);
2244 
2245         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2246                                   ring->rx_vector_no);
2247 
2248         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2249                                    ring->rx_vector_no);
2250 
2251         napi_schedule(&ring->napi);
2252         return IRQ_HANDLED;
2253 }
2254 
2255 static irqreturn_t
2256 vxge_alarm_msix_handle(int irq, void *dev_id)
2257 {
2258         int i;
2259         enum vxge_hw_status status;
2260         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2261         struct vxgedev *vdev = vpath->vdev;
2262         int msix_id = (vpath->handle->vpath->vp_id *
2263                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2264 
2265         for (i = 0; i < vdev->no_of_vpath; i++) {
2266                 /* Reduce the chance of losing alarm interrupts by masking
2267                  * the vector. A pending bit will be set if an alarm is
2268                  * generated and on unmask the interrupt will be fired.
2269                  */
2270                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2271                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2272 
2273                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2274                         vdev->exec_mode);
2275                 if (status == VXGE_HW_OK) {
2276                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2277                                                   msix_id);
2278                         continue;
2279                 }
2280                 vxge_debug_intr(VXGE_ERR,
2281                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2282                         VXGE_DRIVER_NAME, status);
2283         }
2284         return IRQ_HANDLED;
2285 }
2286 
2287 static int vxge_alloc_msix(struct vxgedev *vdev)
2288 {
2289         int j, i, ret = 0;
2290         int msix_intr_vect = 0, temp;
2291         vdev->intr_cnt = 0;
2292 
2293 start:
2294         /* Tx/Rx MSIX Vectors count */
2295         vdev->intr_cnt = vdev->no_of_vpath * 2;
2296 
2297         /* Alarm MSIX Vectors count */
2298         vdev->intr_cnt++;
2299 
2300         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2301                                 GFP_KERNEL);
2302         if (!vdev->entries) {
2303                 vxge_debug_init(VXGE_ERR,
2304                         "%s: memory allocation failed",
2305                         VXGE_DRIVER_NAME);
2306                 ret = -ENOMEM;
2307                 goto alloc_entries_failed;
2308         }
2309 
2310         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2311                                      sizeof(struct vxge_msix_entry),
2312                                      GFP_KERNEL);
2313         if (!vdev->vxge_entries) {
2314                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2315                         VXGE_DRIVER_NAME);
2316                 ret = -ENOMEM;
2317                 goto alloc_vxge_entries_failed;
2318         }
2319 
2320         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2321 
2322                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2323 
2324                 /* Initialize the fifo vector */
2325                 vdev->entries[j].entry = msix_intr_vect;
2326                 vdev->vxge_entries[j].entry = msix_intr_vect;
2327                 vdev->vxge_entries[j].in_use = 0;
2328                 j++;
2329 
2330                 /* Initialize the ring vector */
2331                 vdev->entries[j].entry = msix_intr_vect + 1;
2332                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2333                 vdev->vxge_entries[j].in_use = 0;
2334                 j++;
2335         }
2336 
2337         /* Initialize the alarm vector */
2338         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2339         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2340         vdev->vxge_entries[j].in_use = 0;
2341 
2342         ret = pci_enable_msix_range(vdev->pdev,
2343                                     vdev->entries, 3, vdev->intr_cnt);
2344         if (ret < 0) {
2345                 ret = -ENODEV;
2346                 goto enable_msix_failed;
2347         } else if (ret < vdev->intr_cnt) {
2348                 pci_disable_msix(vdev->pdev);
2349 
2350                 vxge_debug_init(VXGE_ERR,
2351                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2352                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2353                 if (max_config_vpath != VXGE_USE_DEFAULT) {
2354                         ret = -ENODEV;
2355                         goto enable_msix_failed;
2356                 }
2357 
2358                 kfree(vdev->entries);
2359                 kfree(vdev->vxge_entries);
2360                 vdev->entries = NULL;
2361                 vdev->vxge_entries = NULL;
2362                 /* Try with less no of vector by reducing no of vpaths count */
2363                 temp = (ret - 1)/2;
2364                 vxge_close_vpaths(vdev, temp);
2365                 vdev->no_of_vpath = temp;
2366                 goto start;
2367         }
2368         return 0;
2369 
2370 enable_msix_failed:
2371         kfree(vdev->vxge_entries);
2372 alloc_vxge_entries_failed:
2373         kfree(vdev->entries);
2374 alloc_entries_failed:
2375         return ret;
2376 }
2377 
2378 static int vxge_enable_msix(struct vxgedev *vdev)
2379 {
2380 
2381         int i, ret = 0;
2382         /* 0 - Tx, 1 - Rx  */
2383         int tim_msix_id[4] = {0, 1, 0, 0};
2384 
2385         vdev->intr_cnt = 0;
2386 
2387         /* allocate msix vectors */
2388         ret = vxge_alloc_msix(vdev);
2389         if (!ret) {
2390                 for (i = 0; i < vdev->no_of_vpath; i++) {
2391                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2392 
2393                         /* If fifo or ring are not enabled, the MSIX vector for
2394                          * it should be set to 0.
2395                          */
2396                         vpath->ring.rx_vector_no = (vpath->device_id *
2397                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2398 
2399                         vpath->fifo.tx_vector_no = (vpath->device_id *
2400                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2401 
2402                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2403                                                VXGE_ALARM_MSIX_ID);
2404                 }
2405         }
2406 
2407         return ret;
2408 }
2409 
2410 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2411 {
2412         int intr_cnt;
2413 
2414         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2415                 intr_cnt++) {
2416                 if (vdev->vxge_entries[intr_cnt].in_use) {
2417                         synchronize_irq(vdev->entries[intr_cnt].vector);
2418                         free_irq(vdev->entries[intr_cnt].vector,
2419                                 vdev->vxge_entries[intr_cnt].arg);
2420                         vdev->vxge_entries[intr_cnt].in_use = 0;
2421                 }
2422         }
2423 
2424         kfree(vdev->entries);
2425         kfree(vdev->vxge_entries);
2426         vdev->entries = NULL;
2427         vdev->vxge_entries = NULL;
2428 
2429         if (vdev->config.intr_type == MSI_X)
2430                 pci_disable_msix(vdev->pdev);
2431 }
2432 
2433 static void vxge_rem_isr(struct vxgedev *vdev)
2434 {
2435         if (IS_ENABLED(CONFIG_PCI_MSI) &&
2436             vdev->config.intr_type == MSI_X) {
2437                 vxge_rem_msix_isr(vdev);
2438         } else if (vdev->config.intr_type == INTA) {
2439                         synchronize_irq(vdev->pdev->irq);
2440                         free_irq(vdev->pdev->irq, vdev);
2441         }
2442 }
2443 
2444 static int vxge_add_isr(struct vxgedev *vdev)
2445 {
2446         int ret = 0;
2447         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2448         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2449 
2450         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X)
2451                 ret = vxge_enable_msix(vdev);
2452 
2453         if (ret) {
2454                 vxge_debug_init(VXGE_ERR,
2455                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2456                 vxge_debug_init(VXGE_ERR,
2457                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2458                 vdev->config.intr_type = INTA;
2459         }
2460 
2461         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) {
2462                 for (intr_idx = 0;
2463                      intr_idx < (vdev->no_of_vpath *
2464                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2465 
2466                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2467                         irq_req = 0;
2468 
2469                         switch (msix_idx) {
2470                         case 0:
2471                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2472                                         "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2473                                         vdev->ndev->name,
2474                                         vdev->entries[intr_cnt].entry,
2475                                         pci_fun, vp_idx);
2476                                 ret = request_irq(
2477                                         vdev->entries[intr_cnt].vector,
2478                                         vxge_tx_msix_handle, 0,
2479                                         vdev->desc[intr_cnt],
2480                                         &vdev->vpaths[vp_idx].fifo);
2481                                 vdev->vxge_entries[intr_cnt].arg =
2482                                                 &vdev->vpaths[vp_idx].fifo;
2483                                 irq_req = 1;
2484                                 break;
2485                         case 1:
2486                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2487                                         "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2488                                         vdev->ndev->name,
2489                                         vdev->entries[intr_cnt].entry,
2490                                         pci_fun, vp_idx);
2491                                 ret = request_irq(
2492                                         vdev->entries[intr_cnt].vector,
2493                                         vxge_rx_msix_napi_handle, 0,
2494                                         vdev->desc[intr_cnt],
2495                                         &vdev->vpaths[vp_idx].ring);
2496                                 vdev->vxge_entries[intr_cnt].arg =
2497                                                 &vdev->vpaths[vp_idx].ring;
2498                                 irq_req = 1;
2499                                 break;
2500                         }
2501 
2502                         if (ret) {
2503                                 vxge_debug_init(VXGE_ERR,
2504                                         "%s: MSIX - %d  Registration failed",
2505                                         vdev->ndev->name, intr_cnt);
2506                                 vxge_rem_msix_isr(vdev);
2507                                 vdev->config.intr_type = INTA;
2508                                 vxge_debug_init(VXGE_ERR,
2509                                         "%s: Defaulting to INTA",
2510                                         vdev->ndev->name);
2511                                 goto INTA_MODE;
2512                         }
2513 
2514                         if (irq_req) {
2515                                 /* We requested for this msix interrupt */
2516                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2517                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2518                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2519                                 vxge_hw_vpath_msix_unmask(
2520                                         vdev->vpaths[vp_idx].handle,
2521                                         msix_idx);
2522                                 intr_cnt++;
2523                         }
2524 
2525                         /* Point to next vpath handler */
2526                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2527                             (vp_idx < (vdev->no_of_vpath - 1)))
2528                                 vp_idx++;
2529                 }
2530 
2531                 intr_cnt = vdev->no_of_vpath * 2;
2532                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2533                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2534                         vdev->ndev->name,
2535                         vdev->entries[intr_cnt].entry,
2536                         pci_fun);
2537                 /* For Alarm interrupts */
2538                 ret = request_irq(vdev->entries[intr_cnt].vector,
2539                                         vxge_alarm_msix_handle, 0,
2540                                         vdev->desc[intr_cnt],
2541                                         &vdev->vpaths[0]);
2542                 if (ret) {
2543                         vxge_debug_init(VXGE_ERR,
2544                                 "%s: MSIX - %d Registration failed",
2545                                 vdev->ndev->name, intr_cnt);
2546                         vxge_rem_msix_isr(vdev);
2547                         vdev->config.intr_type = INTA;
2548                         vxge_debug_init(VXGE_ERR,
2549                                 "%s: Defaulting to INTA",
2550                                 vdev->ndev->name);
2551                         goto INTA_MODE;
2552                 }
2553 
2554                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2555                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2556                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2557                                         msix_idx);
2558                 vdev->vxge_entries[intr_cnt].in_use = 1;
2559                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2560         }
2561 
2562 INTA_MODE:
2563         if (vdev->config.intr_type == INTA) {
2564                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2565                         "%s:vxge:INTA", vdev->ndev->name);
2566                 vxge_hw_device_set_intr_type(vdev->devh,
2567                         VXGE_HW_INTR_MODE_IRQLINE);
2568 
2569                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2570 
2571                 ret = request_irq((int) vdev->pdev->irq,
2572                         vxge_isr_napi,
2573                         IRQF_SHARED, vdev->desc[0], vdev);
2574                 if (ret) {
2575                         vxge_debug_init(VXGE_ERR,
2576                                 "%s %s-%d: ISR registration failed",
2577                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2578                         return -ENODEV;
2579                 }
2580                 vxge_debug_init(VXGE_TRACE,
2581                         "new %s-%d line allocated",
2582                         "IRQ", vdev->pdev->irq);
2583         }
2584 
2585         return VXGE_HW_OK;
2586 }
2587 
2588 static void vxge_poll_vp_reset(struct timer_list *t)
2589 {
2590         struct vxgedev *vdev = from_timer(vdev, t, vp_reset_timer);
2591         int i, j = 0;
2592 
2593         for (i = 0; i < vdev->no_of_vpath; i++) {
2594                 if (test_bit(i, &vdev->vp_reset)) {
2595                         vxge_reset_vpath(vdev, i);
2596                         j++;
2597                 }
2598         }
2599         if (j && (vdev->config.intr_type != MSI_X)) {
2600                 vxge_hw_device_unmask_all(vdev->devh);
2601                 vxge_hw_device_flush_io(vdev->devh);
2602         }
2603 
2604         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2605 }
2606 
2607 static void vxge_poll_vp_lockup(struct timer_list *t)
2608 {
2609         struct vxgedev *vdev = from_timer(vdev, t, vp_lockup_timer);
2610         enum vxge_hw_status status = VXGE_HW_OK;
2611         struct vxge_vpath *vpath;
2612         struct vxge_ring *ring;
2613         int i;
2614         unsigned long rx_frms;
2615 
2616         for (i = 0; i < vdev->no_of_vpath; i++) {
2617                 ring = &vdev->vpaths[i].ring;
2618 
2619                 /* Truncated to machine word size number of frames */
2620                 rx_frms = READ_ONCE(ring->stats.rx_frms);
2621 
2622                 /* Did this vpath received any packets */
2623                 if (ring->stats.prev_rx_frms == rx_frms) {
2624                         status = vxge_hw_vpath_check_leak(ring->handle);
2625 
2626                         /* Did it received any packets last time */
2627                         if ((VXGE_HW_FAIL == status) &&
2628                                 (VXGE_HW_FAIL == ring->last_status)) {
2629 
2630                                 /* schedule vpath reset */
2631                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2632                                         vpath = &vdev->vpaths[i];
2633 
2634                                         /* disable interrupts for this vpath */
2635                                         vxge_vpath_intr_disable(vdev, i);
2636 
2637                                         /* stop the queue for this vpath */
2638                                         netif_tx_stop_queue(vpath->fifo.txq);
2639                                         continue;
2640                                 }
2641                         }
2642                 }
2643                 ring->stats.prev_rx_frms = rx_frms;
2644                 ring->last_status = status;
2645         }
2646 
2647         /* Check every 1 milli second */
2648         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2649 }
2650 
2651 static netdev_features_t vxge_fix_features(struct net_device *dev,
2652         netdev_features_t features)
2653 {
2654         netdev_features_t changed = dev->features ^ features;
2655 
2656         /* Enabling RTH requires some of the logic in vxge_device_register and a
2657          * vpath reset.  Due to these restrictions, only allow modification
2658          * while the interface is down.
2659          */
2660         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2661                 features ^= NETIF_F_RXHASH;
2662 
2663         return features;
2664 }
2665 
2666 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2667 {
2668         struct vxgedev *vdev = netdev_priv(dev);
2669         netdev_features_t changed = dev->features ^ features;
2670 
2671         if (!(changed & NETIF_F_RXHASH))
2672                 return 0;
2673 
2674         /* !netif_running() ensured by vxge_fix_features() */
2675 
2676         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2677         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2678                 dev->features = features ^ NETIF_F_RXHASH;
2679                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2680                 return -EIO;
2681         }
2682 
2683         return 0;
2684 }
2685 
2686 /**
2687  * vxge_open
2688  * @dev: pointer to the device structure.
2689  *
2690  * This function is the open entry point of the driver. It mainly calls a
2691  * function to allocate Rx buffers and inserts them into the buffer
2692  * descriptors and then enables the Rx part of the NIC.
2693  * Return value: '0' on success and an appropriate (-)ve integer as
2694  * defined in errno.h file on failure.
2695  */
2696 static int vxge_open(struct net_device *dev)
2697 {
2698         enum vxge_hw_status status;
2699         struct vxgedev *vdev;
2700         struct __vxge_hw_device *hldev;
2701         struct vxge_vpath *vpath;
2702         int ret = 0;
2703         int i;
2704         u64 val64;
2705 
2706         vxge_debug_entryexit(VXGE_TRACE,
2707                 "%s: %s:%d", dev->name, __func__, __LINE__);
2708 
2709         vdev = netdev_priv(dev);
2710         hldev = pci_get_drvdata(vdev->pdev);
2711 
2712         /* make sure you have link off by default every time Nic is
2713          * initialized */
2714         netif_carrier_off(dev);
2715 
2716         /* Open VPATHs */
2717         status = vxge_open_vpaths(vdev);
2718         if (status != VXGE_HW_OK) {
2719                 vxge_debug_init(VXGE_ERR,
2720                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2721                 ret = -EPERM;
2722                 goto out0;
2723         }
2724 
2725         vdev->mtu = dev->mtu;
2726 
2727         status = vxge_add_isr(vdev);
2728         if (status != VXGE_HW_OK) {
2729                 vxge_debug_init(VXGE_ERR,
2730                         "%s: fatal: ISR add failed", dev->name);
2731                 ret = -EPERM;
2732                 goto out1;
2733         }
2734 
2735         if (vdev->config.intr_type != MSI_X) {
2736                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2737                         vdev->config.napi_weight);
2738                 napi_enable(&vdev->napi);
2739                 for (i = 0; i < vdev->no_of_vpath; i++) {
2740                         vpath = &vdev->vpaths[i];
2741                         vpath->ring.napi_p = &vdev->napi;
2742                 }
2743         } else {
2744                 for (i = 0; i < vdev->no_of_vpath; i++) {
2745                         vpath = &vdev->vpaths[i];
2746                         netif_napi_add(dev, &vpath->ring.napi,
2747                             vxge_poll_msix, vdev->config.napi_weight);
2748                         napi_enable(&vpath->ring.napi);
2749                         vpath->ring.napi_p = &vpath->ring.napi;
2750                 }
2751         }
2752 
2753         /* configure RTH */
2754         if (vdev->config.rth_steering) {
2755                 status = vxge_rth_configure(vdev);
2756                 if (status != VXGE_HW_OK) {
2757                         vxge_debug_init(VXGE_ERR,
2758                                 "%s: fatal: RTH configuration failed",
2759                                 dev->name);
2760                         ret = -EPERM;
2761                         goto out2;
2762                 }
2763         }
2764         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2765                hldev->config.rth_en ? "enabled" : "disabled");
2766 
2767         for (i = 0; i < vdev->no_of_vpath; i++) {
2768                 vpath = &vdev->vpaths[i];
2769 
2770                 /* set initial mtu before enabling the device */
2771                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2772                 if (status != VXGE_HW_OK) {
2773                         vxge_debug_init(VXGE_ERR,
2774                                 "%s: fatal: can not set new MTU", dev->name);
2775                         ret = -EPERM;
2776                         goto out2;
2777                 }
2778         }
2779 
2780         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2781         vxge_debug_init(vdev->level_trace,
2782                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2783         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2784 
2785         /* Restore the DA, VID table and also multicast and promiscuous mode
2786          * states
2787          */
2788         if (vdev->all_multi_flg) {
2789                 for (i = 0; i < vdev->no_of_vpath; i++) {
2790                         vpath = &vdev->vpaths[i];
2791                         vxge_restore_vpath_mac_addr(vpath);
2792                         vxge_restore_vpath_vid_table(vpath);
2793 
2794                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2795                         if (status != VXGE_HW_OK)
2796                                 vxge_debug_init(VXGE_ERR,
2797                                         "%s:%d Enabling multicast failed",
2798                                         __func__, __LINE__);
2799                 }
2800         }
2801 
2802         /* Enable vpath to sniff all unicast/multicast traffic that not
2803          * addressed to them. We allow promiscuous mode for PF only
2804          */
2805 
2806         val64 = 0;
2807         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2808                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2809 
2810         vxge_hw_mgmt_reg_write(vdev->devh,
2811                 vxge_hw_mgmt_reg_type_mrpcim,
2812                 0,
2813                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2814                         rxmac_authorize_all_addr),
2815                 val64);
2816 
2817         vxge_hw_mgmt_reg_write(vdev->devh,
2818                 vxge_hw_mgmt_reg_type_mrpcim,
2819                 0,
2820                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2821                         rxmac_authorize_all_vid),
2822                 val64);
2823 
2824         vxge_set_multicast(dev);
2825 
2826         /* Enabling Bcast and mcast for all vpath */
2827         for (i = 0; i < vdev->no_of_vpath; i++) {
2828                 vpath = &vdev->vpaths[i];
2829                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2830                 if (status != VXGE_HW_OK)
2831                         vxge_debug_init(VXGE_ERR,
2832                                 "%s : Can not enable bcast for vpath "
2833                                 "id %d", dev->name, i);
2834                 if (vdev->config.addr_learn_en) {
2835                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2836                         if (status != VXGE_HW_OK)
2837                                 vxge_debug_init(VXGE_ERR,
2838                                         "%s : Can not enable mcast for vpath "
2839                                         "id %d", dev->name, i);
2840                 }
2841         }
2842 
2843         vxge_hw_device_setpause_data(vdev->devh, 0,
2844                 vdev->config.tx_pause_enable,
2845                 vdev->config.rx_pause_enable);
2846 
2847         if (vdev->vp_reset_timer.function == NULL)
2848                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset,
2849                               HZ / 2);
2850 
2851         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2852         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2853                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup,
2854                               HZ / 2);
2855 
2856         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2857 
2858         smp_wmb();
2859 
2860         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2861                 netif_carrier_on(vdev->ndev);
2862                 netdev_notice(vdev->ndev, "Link Up\n");
2863                 vdev->stats.link_up++;
2864         }
2865 
2866         vxge_hw_device_intr_enable(vdev->devh);
2867 
2868         smp_wmb();
2869 
2870         for (i = 0; i < vdev->no_of_vpath; i++) {
2871                 vpath = &vdev->vpaths[i];
2872 
2873                 vxge_hw_vpath_enable(vpath->handle);
2874                 smp_wmb();
2875                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2876         }
2877 
2878         netif_tx_start_all_queues(vdev->ndev);
2879 
2880         /* configure CI */
2881         vxge_config_ci_for_tti_rti(vdev);
2882 
2883         goto out0;
2884 
2885 out2:
2886         vxge_rem_isr(vdev);
2887 
2888         /* Disable napi */
2889         if (vdev->config.intr_type != MSI_X)
2890                 napi_disable(&vdev->napi);
2891         else {
2892                 for (i = 0; i < vdev->no_of_vpath; i++)
2893                         napi_disable(&vdev->vpaths[i].ring.napi);
2894         }
2895 
2896 out1:
2897         vxge_close_vpaths(vdev, 0);
2898 out0:
2899         vxge_debug_entryexit(VXGE_TRACE,
2900                                 "%s: %s:%d  Exiting...",
2901                                 dev->name, __func__, __LINE__);
2902         return ret;
2903 }
2904 
2905 /* Loop through the mac address list and delete all the entries */
2906 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2907 {
2908 
2909         struct list_head *entry, *next;
2910         if (list_empty(&vpath->mac_addr_list))
2911                 return;
2912 
2913         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2914                 list_del(entry);
2915                 kfree((struct vxge_mac_addrs *)entry);
2916         }
2917 }
2918 
2919 static void vxge_napi_del_all(struct vxgedev *vdev)
2920 {
2921         int i;
2922         if (vdev->config.intr_type != MSI_X)
2923                 netif_napi_del(&vdev->napi);
2924         else {
2925                 for (i = 0; i < vdev->no_of_vpath; i++)
2926                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2927         }
2928 }
2929 
2930 static int do_vxge_close(struct net_device *dev, int do_io)
2931 {
2932         enum vxge_hw_status status;
2933         struct vxgedev *vdev;
2934         struct __vxge_hw_device *hldev;
2935         int i;
2936         u64 val64, vpath_vector;
2937         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2938                 dev->name, __func__, __LINE__);
2939 
2940         vdev = netdev_priv(dev);
2941         hldev = pci_get_drvdata(vdev->pdev);
2942 
2943         if (unlikely(!is_vxge_card_up(vdev)))
2944                 return 0;
2945 
2946         /* If vxge_handle_crit_err task is executing,
2947          * wait till it completes. */
2948         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2949                 msleep(50);
2950 
2951         if (do_io) {
2952                 /* Put the vpath back in normal mode */
2953                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2954                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2955                                 vxge_hw_mgmt_reg_type_mrpcim,
2956                                 0,
2957                                 (ulong)offsetof(
2958                                         struct vxge_hw_mrpcim_reg,
2959                                         rts_mgr_cbasin_cfg),
2960                                 &val64);
2961                 if (status == VXGE_HW_OK) {
2962                         val64 &= ~vpath_vector;
2963                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2964                                         vxge_hw_mgmt_reg_type_mrpcim,
2965                                         0,
2966                                         (ulong)offsetof(
2967                                                 struct vxge_hw_mrpcim_reg,
2968                                                 rts_mgr_cbasin_cfg),
2969                                         val64);
2970                 }
2971 
2972                 /* Remove the function 0 from promiscuous mode */
2973                 vxge_hw_mgmt_reg_write(vdev->devh,
2974                         vxge_hw_mgmt_reg_type_mrpcim,
2975                         0,
2976                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2977                                 rxmac_authorize_all_addr),
2978                         0);
2979 
2980                 vxge_hw_mgmt_reg_write(vdev->devh,
2981                         vxge_hw_mgmt_reg_type_mrpcim,
2982                         0,
2983                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2984                                 rxmac_authorize_all_vid),
2985                         0);
2986 
2987                 smp_wmb();
2988         }
2989 
2990         if (vdev->titan1)
2991                 del_timer_sync(&vdev->vp_lockup_timer);
2992 
2993         del_timer_sync(&vdev->vp_reset_timer);
2994 
2995         if (do_io)
2996                 vxge_hw_device_wait_receive_idle(hldev);
2997 
2998         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2999 
3000         /* Disable napi */
3001         if (vdev->config.intr_type != MSI_X)
3002                 napi_disable(&vdev->napi);
3003         else {
3004                 for (i = 0; i < vdev->no_of_vpath; i++)
3005                         napi_disable(&vdev->vpaths[i].ring.napi);
3006         }
3007 
3008         netif_carrier_off(vdev->ndev);
3009         netdev_notice(vdev->ndev, "Link Down\n");
3010         netif_tx_stop_all_queues(vdev->ndev);
3011 
3012         /* Note that at this point xmit() is stopped by upper layer */
3013         if (do_io)
3014                 vxge_hw_device_intr_disable(vdev->devh);
3015 
3016         vxge_rem_isr(vdev);
3017 
3018         vxge_napi_del_all(vdev);
3019 
3020         if (do_io)
3021                 vxge_reset_all_vpaths(vdev);
3022 
3023         vxge_close_vpaths(vdev, 0);
3024 
3025         vxge_debug_entryexit(VXGE_TRACE,
3026                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3027 
3028         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3029 
3030         return 0;
3031 }
3032 
3033 /**
3034  * vxge_close
3035  * @dev: device pointer.
3036  *
3037  * This is the stop entry point of the driver. It needs to undo exactly
3038  * whatever was done by the open entry point, thus it's usually referred to
3039  * as the close function.Among other things this function mainly stops the
3040  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3041  * Return value: '0' on success and an appropriate (-)ve integer as
3042  * defined in errno.h file on failure.
3043  */
3044 static int vxge_close(struct net_device *dev)
3045 {
3046         do_vxge_close(dev, 1);
3047         return 0;
3048 }
3049 
3050 /**
3051  * vxge_change_mtu
3052  * @dev: net device pointer.
3053  * @new_mtu :the new MTU size for the device.
3054  *
3055  * A driver entry point to change MTU size for the device. Before changing
3056  * the MTU the device must be stopped.
3057  */
3058 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3059 {
3060         struct vxgedev *vdev = netdev_priv(dev);
3061 
3062         vxge_debug_entryexit(vdev->level_trace,
3063                 "%s:%d", __func__, __LINE__);
3064 
3065         /* check if device is down already */
3066         if (unlikely(!is_vxge_card_up(vdev))) {
3067                 /* just store new value, will use later on open() */
3068                 dev->mtu = new_mtu;
3069                 vxge_debug_init(vdev->level_err,
3070                         "%s", "device is down on MTU change");
3071                 return 0;
3072         }
3073 
3074         vxge_debug_init(vdev->level_trace,
3075                 "trying to apply new MTU %d", new_mtu);
3076 
3077         if (vxge_close(dev))
3078                 return -EIO;
3079 
3080         dev->mtu = new_mtu;
3081         vdev->mtu = new_mtu;
3082 
3083         if (vxge_open(dev))
3084                 return -EIO;
3085 
3086         vxge_debug_init(vdev->level_trace,
3087                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3088 
3089         vxge_debug_entryexit(vdev->level_trace,
3090                 "%s:%d  Exiting...", __func__, __LINE__);
3091 
3092         return 0;
3093 }
3094 
3095 /**
3096  * vxge_get_stats64
3097  * @dev: pointer to the device structure
3098  * @stats: pointer to struct rtnl_link_stats64
3099  *
3100  */
3101 static void
3102 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3103 {
3104         struct vxgedev *vdev = netdev_priv(dev);
3105         int k;
3106 
3107         /* net_stats already zeroed by caller */
3108         for (k = 0; k < vdev->no_of_vpath; k++) {
3109                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3110                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3111                 unsigned int start;
3112                 u64 packets, bytes, multicast;
3113 
3114                 do {
3115                         start = u64_stats_fetch_begin_irq(&rxstats->syncp);
3116 
3117                         packets   = rxstats->rx_frms;
3118                         multicast = rxstats->rx_mcast;
3119                         bytes     = rxstats->rx_bytes;
3120                 } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start));
3121 
3122                 net_stats->rx_packets += packets;
3123                 net_stats->rx_bytes += bytes;
3124                 net_stats->multicast += multicast;
3125 
3126                 net_stats->rx_errors += rxstats->rx_errors;
3127                 net_stats->rx_dropped += rxstats->rx_dropped;
3128 
3129                 do {
3130                         start = u64_stats_fetch_begin_irq(&txstats->syncp);
3131 
3132                         packets = txstats->tx_frms;
3133                         bytes   = txstats->tx_bytes;
3134                 } while (u64_stats_fetch_retry_irq(&txstats->syncp, start));
3135 
3136                 net_stats->tx_packets += packets;
3137                 net_stats->tx_bytes += bytes;
3138                 net_stats->tx_errors += txstats->tx_errors;
3139         }
3140 }
3141 
3142 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3143 {
3144         enum vxge_hw_status status;
3145         u64 val64;
3146 
3147         /* Timestamp is passed to the driver via the FCS, therefore we
3148          * must disable the FCS stripping by the adapter.  Since this is
3149          * required for the driver to load (due to a hardware bug),
3150          * there is no need to do anything special here.
3151          */
3152         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3153                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3154                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3155 
3156         status = vxge_hw_mgmt_reg_write(devh,
3157                                         vxge_hw_mgmt_reg_type_mrpcim,
3158                                         0,
3159                                         offsetof(struct vxge_hw_mrpcim_reg,
3160                                                  xmac_timestamp),
3161                                         val64);
3162         vxge_hw_device_flush_io(devh);
3163         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3164         return status;
3165 }
3166 
3167 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3168 {
3169         struct hwtstamp_config config;
3170         int i;
3171 
3172         if (copy_from_user(&config, data, sizeof(config)))
3173                 return -EFAULT;
3174 
3175         /* reserved for future extensions */
3176         if (config.flags)
3177                 return -EINVAL;
3178 
3179         /* Transmit HW Timestamp not supported */
3180         switch (config.tx_type) {
3181         case HWTSTAMP_TX_OFF:
3182                 break;
3183         case HWTSTAMP_TX_ON:
3184         default:
3185                 return -ERANGE;
3186         }
3187 
3188         switch (config.rx_filter) {
3189         case HWTSTAMP_FILTER_NONE:
3190                 vdev->rx_hwts = 0;
3191                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3192                 break;
3193 
3194         case HWTSTAMP_FILTER_ALL:
3195         case HWTSTAMP_FILTER_SOME:
3196         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3197         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3198         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3199         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3200         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3201         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3202         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3203         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3204         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3205         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3206         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3207         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3208         case HWTSTAMP_FILTER_NTP_ALL:
3209                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3210                         return -EFAULT;
3211 
3212                 vdev->rx_hwts = 1;
3213                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3214                 break;
3215 
3216         default:
3217                  return -ERANGE;
3218         }
3219 
3220         for (i = 0; i < vdev->no_of_vpath; i++)
3221                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3222 
3223         if (copy_to_user(data, &config, sizeof(config)))
3224                 return -EFAULT;
3225 
3226         return 0;
3227 }
3228 
3229 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3230 {
3231         struct hwtstamp_config config;
3232 
3233         config.flags = 0;
3234         config.tx_type = HWTSTAMP_TX_OFF;
3235         config.rx_filter = (vdev->rx_hwts ?
3236                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3237 
3238         if (copy_to_user(data, &config, sizeof(config)))
3239                 return -EFAULT;
3240 
3241         return 0;
3242 }
3243 
3244 /**
3245  * vxge_ioctl
3246  * @dev: Device pointer.
3247  * @ifr: An IOCTL specific structure, that can contain a pointer to
3248  *       a proprietary structure used to pass information to the driver.
3249  * @cmd: This is used to distinguish between the different commands that
3250  *       can be passed to the IOCTL functions.
3251  *
3252  * Entry point for the Ioctl.
3253  */
3254 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3255 {
3256         struct vxgedev *vdev = netdev_priv(dev);
3257 
3258         switch (cmd) {
3259         case SIOCSHWTSTAMP:
3260                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3261         case SIOCGHWTSTAMP:
3262                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3263         default:
3264                 return -EOPNOTSUPP;
3265         }
3266 }
3267 
3268 /**
3269  * vxge_tx_watchdog
3270  * @dev: pointer to net device structure
3271  *
3272  * Watchdog for transmit side.
3273  * This function is triggered if the Tx Queue is stopped
3274  * for a pre-defined amount of time when the Interface is still up.
3275  */
3276 static void vxge_tx_watchdog(struct net_device *dev)
3277 {
3278         struct vxgedev *vdev;
3279 
3280         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3281 
3282         vdev = netdev_priv(dev);
3283 
3284         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3285 
3286         schedule_work(&vdev->reset_task);
3287         vxge_debug_entryexit(VXGE_TRACE,
3288                 "%s:%d  Exiting...", __func__, __LINE__);
3289 }
3290 
3291 /**
3292  * vxge_vlan_rx_add_vid
3293  * @dev: net device pointer.
3294  * @proto: vlan protocol
3295  * @vid: vid
3296  *
3297  * Add the vlan id to the devices vlan id table
3298  */
3299 static int
3300 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3301 {
3302         struct vxgedev *vdev = netdev_priv(dev);
3303         struct vxge_vpath *vpath;
3304         int vp_id;
3305 
3306         /* Add these vlan to the vid table */
3307         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3308                 vpath = &vdev->vpaths[vp_id];
3309                 if (!vpath->is_open)
3310                         continue;
3311                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3312         }
3313         set_bit(vid, vdev->active_vlans);
3314         return 0;
3315 }
3316 
3317 /**
3318  * vxge_vlan_rx_kill_vid
3319  * @dev: net device pointer.
3320  * @proto: vlan protocol
3321  * @vid: vid
3322  *
3323  * Remove the vlan id from the device's vlan id table
3324  */
3325 static int
3326 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3327 {
3328         struct vxgedev *vdev = netdev_priv(dev);
3329         struct vxge_vpath *vpath;
3330         int vp_id;
3331 
3332         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3333 
3334         /* Delete this vlan from the vid table */
3335         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3336                 vpath = &vdev->vpaths[vp_id];
3337                 if (!vpath->is_open)
3338                         continue;
3339                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3340         }
3341         vxge_debug_entryexit(VXGE_TRACE,
3342                 "%s:%d  Exiting...", __func__, __LINE__);
3343         clear_bit(vid, vdev->active_vlans);
3344         return 0;
3345 }
3346 
3347 static const struct net_device_ops vxge_netdev_ops = {
3348         .ndo_open               = vxge_open,
3349         .ndo_stop               = vxge_close,
3350         .ndo_get_stats64        = vxge_get_stats64,
3351         .ndo_start_xmit         = vxge_xmit,
3352         .ndo_validate_addr      = eth_validate_addr,
3353         .ndo_set_rx_mode        = vxge_set_multicast,
3354         .ndo_do_ioctl           = vxge_ioctl,
3355         .ndo_set_mac_address    = vxge_set_mac_addr,
3356         .ndo_change_mtu         = vxge_change_mtu,
3357         .ndo_fix_features       = vxge_fix_features,
3358         .ndo_set_features       = vxge_set_features,
3359         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3360         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3361         .ndo_tx_timeout         = vxge_tx_watchdog,
3362 #ifdef CONFIG_NET_POLL_CONTROLLER
3363         .ndo_poll_controller    = vxge_netpoll,
3364 #endif
3365 };
3366 
3367 static int vxge_device_register(struct __vxge_hw_device *hldev,
3368                                 struct vxge_config *config, int high_dma,
3369                                 int no_of_vpath, struct vxgedev **vdev_out)
3370 {
3371         struct net_device *ndev;
3372         enum vxge_hw_status status = VXGE_HW_OK;
3373         struct vxgedev *vdev;
3374         int ret = 0, no_of_queue = 1;
3375         u64 stat;
3376 
3377         *vdev_out = NULL;
3378         if (config->tx_steering_type)
3379                 no_of_queue = no_of_vpath;
3380 
3381         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3382                         no_of_queue);
3383         if (ndev == NULL) {
3384                 vxge_debug_init(
3385                         vxge_hw_device_trace_level_get(hldev),
3386                 "%s : device allocation failed", __func__);
3387                 ret = -ENODEV;
3388                 goto _out0;
3389         }
3390 
3391         vxge_debug_entryexit(
3392                 vxge_hw_device_trace_level_get(hldev),
3393                 "%s: %s:%d  Entering...",
3394                 ndev->name, __func__, __LINE__);
3395 
3396         vdev = netdev_priv(ndev);
3397         memset(vdev, 0, sizeof(struct vxgedev));
3398 
3399         vdev->ndev = ndev;
3400         vdev->devh = hldev;
3401         vdev->pdev = hldev->pdev;
3402         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3403         vdev->rx_hwts = 0;
3404         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3405 
3406         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3407 
3408         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3409                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3410                 NETIF_F_TSO | NETIF_F_TSO6 |
3411                 NETIF_F_HW_VLAN_CTAG_TX;
3412         if (vdev->config.rth_steering != NO_STEERING)
3413                 ndev->hw_features |= NETIF_F_RXHASH;
3414 
3415         ndev->features |= ndev->hw_features |
3416                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3417 
3418 
3419         ndev->netdev_ops = &vxge_netdev_ops;
3420 
3421         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3422         INIT_WORK(&vdev->reset_task, vxge_reset);
3423 
3424         vxge_initialize_ethtool_ops(ndev);
3425 
3426         /* Allocate memory for vpath */
3427         vdev->vpaths = kcalloc(no_of_vpath, sizeof(struct vxge_vpath),
3428                                GFP_KERNEL);
3429         if (!vdev->vpaths) {
3430                 vxge_debug_init(VXGE_ERR,
3431                         "%s: vpath memory allocation failed",
3432                         vdev->ndev->name);
3433                 ret = -ENOMEM;
3434                 goto _out1;
3435         }
3436 
3437         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3438                 "%s : checksumming enabled", __func__);
3439 
3440         if (high_dma) {
3441                 ndev->features |= NETIF_F_HIGHDMA;
3442                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3443                         "%s : using High DMA", __func__);
3444         }
3445 
3446         /* MTU range: 68 - 9600 */
3447         ndev->min_mtu = VXGE_HW_MIN_MTU;
3448         ndev->max_mtu = VXGE_HW_MAX_MTU;
3449 
3450         ret = register_netdev(ndev);
3451         if (ret) {
3452                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3453                         "%s: %s : device registration failed!",
3454                         ndev->name, __func__);
3455                 goto _out2;
3456         }
3457 
3458         /*  Set the factory defined MAC address initially */
3459         ndev->addr_len = ETH_ALEN;
3460 
3461         /* Make Link state as off at this point, when the Link change
3462          * interrupt comes the state will be automatically changed to
3463          * the right state.
3464          */
3465         netif_carrier_off(ndev);
3466 
3467         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3468                 "%s: Ethernet device registered",
3469                 ndev->name);
3470 
3471         hldev->ndev = ndev;
3472         *vdev_out = vdev;
3473 
3474         /* Resetting the Device stats */
3475         status = vxge_hw_mrpcim_stats_access(
3476                                 hldev,
3477                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3478                                 0,
3479                                 0,
3480                                 &stat);
3481 
3482         if (status == VXGE_HW_ERR_PRIVILEGED_OPERATION)
3483                 vxge_debug_init(
3484                         vxge_hw_device_trace_level_get(hldev),
3485                         "%s: device stats clear returns"
3486                         "VXGE_HW_ERR_PRIVILEGED_OPERATION", ndev->name);
3487 
3488         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3489                 "%s: %s:%d  Exiting...",
3490                 ndev->name, __func__, __LINE__);
3491 
3492         return ret;
3493 _out2:
3494         kfree(vdev->vpaths);
3495 _out1:
3496         free_netdev(ndev);
3497 _out0:
3498         return ret;
3499 }
3500 
3501 /*
3502  * vxge_device_unregister
3503  *
3504  * This function will unregister and free network device
3505  */
3506 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3507 {
3508         struct vxgedev *vdev;
3509         struct net_device *dev;
3510         char buf[IFNAMSIZ];
3511 
3512         dev = hldev->ndev;
3513         vdev = netdev_priv(dev);
3514 
3515         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3516                              __func__, __LINE__);
3517 
3518         strlcpy(buf, dev->name, IFNAMSIZ);
3519 
3520         flush_work(&vdev->reset_task);
3521 
3522         /* in 2.6 will call stop() if device is up */
3523         unregister_netdev(dev);
3524 
3525         kfree(vdev->vpaths);
3526 
3527         /* we are safe to free it now */
3528         free_netdev(dev);
3529 
3530         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3531                         buf);
3532         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3533                              __func__, __LINE__);
3534 }
3535 
3536 /*
3537  * vxge_callback_crit_err
3538  *
3539  * This function is called by the alarm handler in interrupt context.
3540  * Driver must analyze it based on the event type.
3541  */
3542 static void
3543 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3544                         enum vxge_hw_event type, u64 vp_id)
3545 {
3546         struct net_device *dev = hldev->ndev;
3547         struct vxgedev *vdev = netdev_priv(dev);
3548         struct vxge_vpath *vpath = NULL;
3549         int vpath_idx;
3550 
3551         vxge_debug_entryexit(vdev->level_trace,
3552                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3553 
3554         /* Note: This event type should be used for device wide
3555          * indications only - Serious errors, Slot freeze and critical errors
3556          */
3557         vdev->cric_err_event = type;
3558 
3559         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3560                 vpath = &vdev->vpaths[vpath_idx];
3561                 if (vpath->device_id == vp_id)
3562                         break;
3563         }
3564 
3565         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3566                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3567                         vxge_debug_init(VXGE_ERR,
3568                                 "%s: Slot is frozen", vdev->ndev->name);
3569                 } else if (type == VXGE_HW_EVENT_SERR) {
3570                         vxge_debug_init(VXGE_ERR,
3571                                 "%s: Encountered Serious Error",
3572                                 vdev->ndev->name);
3573                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3574                         vxge_debug_init(VXGE_ERR,
3575                                 "%s: Encountered Critical Error",
3576                                 vdev->ndev->name);
3577         }
3578 
3579         if ((type == VXGE_HW_EVENT_SERR) ||
3580                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3581                 if (unlikely(vdev->exec_mode))
3582                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3583         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3584                 vxge_hw_device_mask_all(hldev);
3585                 if (unlikely(vdev->exec_mode))
3586                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3587         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3588                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3589 
3590                 if (unlikely(vdev->exec_mode))
3591                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3592                 else {
3593                         /* check if this vpath is already set for reset */
3594                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3595 
3596                                 /* disable interrupts for this vpath */
3597                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3598 
3599                                 /* stop the queue for this vpath */
3600                                 netif_tx_stop_queue(vpath->fifo.txq);
3601                         }
3602                 }
3603         }
3604 
3605         vxge_debug_entryexit(vdev->level_trace,
3606                 "%s: %s:%d  Exiting...",
3607                 vdev->ndev->name, __func__, __LINE__);
3608 }
3609 
3610 static void verify_bandwidth(void)
3611 {
3612         int i, band_width, total = 0, equal_priority = 0;
3613 
3614         /* 1. If user enters 0 for some fifo, give equal priority to all */
3615         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3616                 if (bw_percentage[i] == 0) {
3617                         equal_priority = 1;
3618                         break;
3619                 }
3620         }
3621 
3622         if (!equal_priority) {
3623                 /* 2. If sum exceeds 100, give equal priority to all */
3624                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3625                         if (bw_percentage[i] == 0xFF)
3626                                 break;
3627 
3628                         total += bw_percentage[i];
3629                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3630                                 equal_priority = 1;
3631                                 break;
3632                         }
3633                 }
3634         }
3635 
3636         if (!equal_priority) {
3637                 /* Is all the bandwidth consumed? */
3638                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3639                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3640                                 /* Split rest of bw equally among next VPs*/
3641                                 band_width =
3642                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3643                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3644                                 if (band_width < 2) /* min of 2% */
3645                                         equal_priority = 1;
3646                                 else {
3647                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3648                                                 i++)
3649                                                 bw_percentage[i] =
3650                                                         band_width;
3651                                 }
3652                         }
3653                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3654                         equal_priority = 1;
3655         }
3656 
3657         if (equal_priority) {
3658                 vxge_debug_init(VXGE_ERR,
3659                         "%s: Assigning equal bandwidth to all the vpaths",
3660                         VXGE_DRIVER_NAME);
3661                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3662                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3663                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3664                         bw_percentage[i] = bw_percentage[0];
3665         }
3666 }
3667 
3668 /*
3669  * Vpath configuration
3670  */
3671 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3672                               u64 vpath_mask, struct vxge_config *config_param)
3673 {
3674         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3675         u32 txdl_size, txdl_per_memblock;
3676 
3677         temp = driver_config->vpath_per_dev;
3678         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3679                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3680                 /* No more CPU. Return vpath number as zero.*/
3681                 if (driver_config->g_no_cpus == -1)
3682                         return 0;
3683 
3684                 if (!driver_config->g_no_cpus)
3685                         driver_config->g_no_cpus =
3686                                 netif_get_num_default_rss_queues();
3687 
3688                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3689                 if (!driver_config->vpath_per_dev)
3690                         driver_config->vpath_per_dev = 1;
3691 
3692                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3693                         if (!vxge_bVALn(vpath_mask, i, 1))
3694                                 continue;
3695                         else
3696                                 default_no_vpath++;
3697                 if (default_no_vpath < driver_config->vpath_per_dev)
3698                         driver_config->vpath_per_dev = default_no_vpath;
3699 
3700                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3701                                 (driver_config->vpath_per_dev * 2);
3702                 if (driver_config->g_no_cpus <= 0)
3703                         driver_config->g_no_cpus = -1;
3704         }
3705 
3706         if (driver_config->vpath_per_dev == 1) {
3707                 vxge_debug_ll_config(VXGE_TRACE,
3708                         "%s: Disable tx and rx steering, "
3709                         "as single vpath is configured", VXGE_DRIVER_NAME);
3710                 config_param->rth_steering = NO_STEERING;
3711                 config_param->tx_steering_type = NO_STEERING;
3712                 device_config->rth_en = 0;
3713         }
3714 
3715         /* configure bandwidth */
3716         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3717                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3718 
3719         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3720                 device_config->vp_config[i].vp_id = i;
3721                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3722                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3723                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3724                                 vxge_debug_ll_config(VXGE_TRACE,
3725                                         "%s: vpath: %d is not available",
3726                                         VXGE_DRIVER_NAME, i);
3727                                 continue;
3728                         } else {
3729                                 vxge_debug_ll_config(VXGE_TRACE,
3730                                         "%s: vpath: %d available",
3731                                         VXGE_DRIVER_NAME, i);
3732                                 no_of_vpaths++;
3733                         }
3734                 } else {
3735                         vxge_debug_ll_config(VXGE_TRACE,
3736                                 "%s: vpath: %d is not configured, "
3737                                 "max_config_vpath exceeded",
3738                                 VXGE_DRIVER_NAME, i);
3739                         break;
3740                 }
3741 
3742                 /* Configure Tx fifo's */
3743                 device_config->vp_config[i].fifo.enable =
3744                                                 VXGE_HW_FIFO_ENABLE;
3745                 device_config->vp_config[i].fifo.max_frags =
3746                                 MAX_SKB_FRAGS + 1;
3747                 device_config->vp_config[i].fifo.memblock_size =
3748                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3749 
3750                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3751                                 sizeof(struct vxge_hw_fifo_txd);
3752                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3753 
3754                 device_config->vp_config[i].fifo.fifo_blocks =
3755                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3756 
3757                 device_config->vp_config[i].fifo.intr =
3758                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3759 
3760                 /* Configure tti properties */
3761                 device_config->vp_config[i].tti.intr_enable =
3762                                         VXGE_HW_TIM_INTR_ENABLE;
3763 
3764                 device_config->vp_config[i].tti.btimer_val =
3765                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3766 
3767                 device_config->vp_config[i].tti.timer_ac_en =
3768                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3769 
3770                 /* For msi-x with napi (each vector has a handler of its own) -
3771                  * Set CI to OFF for all vpaths
3772                  */
3773                 device_config->vp_config[i].tti.timer_ci_en =
3774                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3775 
3776                 device_config->vp_config[i].tti.timer_ri_en =
3777                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3778 
3779                 device_config->vp_config[i].tti.util_sel =
3780                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3781 
3782                 device_config->vp_config[i].tti.ltimer_val =
3783                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3784 
3785                 device_config->vp_config[i].tti.rtimer_val =
3786                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3787 
3788                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3789                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3790                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3791                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3792                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3793                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3794                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3795 
3796                 /* Configure Rx rings */
3797                 device_config->vp_config[i].ring.enable  =
3798                                                 VXGE_HW_RING_ENABLE;
3799 
3800                 device_config->vp_config[i].ring.ring_blocks  =
3801                                                 VXGE_HW_DEF_RING_BLOCKS;
3802 
3803                 device_config->vp_config[i].ring.buffer_mode =
3804                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3805 
3806                 device_config->vp_config[i].ring.rxds_limit  =
3807                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3808 
3809                 device_config->vp_config[i].ring.scatter_mode =
3810                                         VXGE_HW_RING_SCATTER_MODE_A;
3811 
3812                 /* Configure rti properties */
3813                 device_config->vp_config[i].rti.intr_enable =
3814                                         VXGE_HW_TIM_INTR_ENABLE;
3815 
3816                 device_config->vp_config[i].rti.btimer_val =
3817                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3818 
3819                 device_config->vp_config[i].rti.timer_ac_en =
3820                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3821 
3822                 device_config->vp_config[i].rti.timer_ci_en =
3823                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3824 
3825                 device_config->vp_config[i].rti.timer_ri_en =
3826                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3827 
3828                 device_config->vp_config[i].rti.util_sel =
3829                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3830 
3831                 device_config->vp_config[i].rti.urange_a =
3832                                                 RTI_RX_URANGE_A;
3833                 device_config->vp_config[i].rti.urange_b =
3834                                                 RTI_RX_URANGE_B;
3835                 device_config->vp_config[i].rti.urange_c =
3836                                                 RTI_RX_URANGE_C;
3837                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3838                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3839                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3840                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3841 
3842                 device_config->vp_config[i].rti.rtimer_val =
3843                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3844 
3845                 device_config->vp_config[i].rti.ltimer_val =
3846                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3847 
3848                 device_config->vp_config[i].rpa_strip_vlan_tag =
3849                         vlan_tag_strip;
3850         }
3851 
3852         driver_config->vpath_per_dev = temp;
3853         return no_of_vpaths;
3854 }
3855 
3856 /* initialize device configuratrions */
3857 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3858                                     int *intr_type)
3859 {
3860         /* Used for CQRQ/SRQ. */
3861         device_config->dma_blockpool_initial =
3862                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3863 
3864         device_config->dma_blockpool_max =
3865                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3866 
3867         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3868                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3869 
3870         if (!IS_ENABLED(CONFIG_PCI_MSI)) {
3871                 vxge_debug_init(VXGE_ERR,
3872                         "%s: This Kernel does not support "
3873                         "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3874                 *intr_type = INTA;
3875         }
3876 
3877         /* Configure whether MSI-X or IRQL. */
3878         switch (*intr_type) {
3879         case INTA:
3880                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3881                 break;
3882 
3883         case MSI_X:
3884                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3885                 break;
3886         }
3887 
3888         /* Timer period between device poll */
3889         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3890 
3891         /* Configure mac based steering. */
3892         device_config->rts_mac_en = addr_learn_en;
3893 
3894         /* Configure Vpaths */
3895         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3896 
3897         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3898                         __func__);
3899         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3900                         device_config->intr_mode);
3901         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3902                         device_config->device_poll_millis);
3903         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3904                         device_config->rth_en);
3905         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3906                         device_config->rth_it_type);
3907 }
3908 
3909 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3910 {
3911         int i;
3912 
3913         vxge_debug_init(VXGE_TRACE,
3914                 "%s: %d Vpath(s) opened",
3915                 vdev->ndev->name, vdev->no_of_vpath);
3916 
3917         switch (vdev->config.intr_type) {
3918         case INTA:
3919                 vxge_debug_init(VXGE_TRACE,
3920                         "%s: Interrupt type INTA", vdev->ndev->name);
3921                 break;
3922 
3923         case MSI_X:
3924                 vxge_debug_init(VXGE_TRACE,
3925                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3926                 break;
3927         }
3928 
3929         if (vdev->config.rth_steering) {
3930                 vxge_debug_init(VXGE_TRACE,
3931                         "%s: RTH steering enabled for TCP_IPV4",
3932                         vdev->ndev->name);
3933         } else {
3934                 vxge_debug_init(VXGE_TRACE,
3935                         "%s: RTH steering disabled", vdev->ndev->name);
3936         }
3937 
3938         switch (vdev->config.tx_steering_type) {
3939         case NO_STEERING:
3940                 vxge_debug_init(VXGE_TRACE,
3941                         "%s: Tx steering disabled", vdev->ndev->name);
3942                 break;
3943         case TX_PRIORITY_STEERING:
3944                 vxge_debug_init(VXGE_TRACE,
3945                         "%s: Unsupported tx steering option",
3946                         vdev->ndev->name);
3947                 vxge_debug_init(VXGE_TRACE,
3948                         "%s: Tx steering disabled", vdev->ndev->name);
3949                 vdev->config.tx_steering_type = 0;
3950                 break;
3951         case TX_VLAN_STEERING:
3952                 vxge_debug_init(VXGE_TRACE,
3953                         "%s: Unsupported tx steering option",
3954                         vdev->ndev->name);
3955                 vxge_debug_init(VXGE_TRACE,
3956                         "%s: Tx steering disabled", vdev->ndev->name);
3957                 vdev->config.tx_steering_type = 0;
3958                 break;
3959         case TX_MULTIQ_STEERING:
3960                 vxge_debug_init(VXGE_TRACE,
3961                         "%s: Tx multiqueue steering enabled",
3962                         vdev->ndev->name);
3963                 break;
3964         case TX_PORT_STEERING:
3965                 vxge_debug_init(VXGE_TRACE,
3966                         "%s: Tx port steering enabled",
3967                         vdev->ndev->name);
3968                 break;
3969         default:
3970                 vxge_debug_init(VXGE_ERR,
3971                         "%s: Unsupported tx steering type",
3972                         vdev->ndev->name);
3973                 vxge_debug_init(VXGE_TRACE,
3974                         "%s: Tx steering disabled", vdev->ndev->name);
3975                 vdev->config.tx_steering_type = 0;
3976         }
3977 
3978         if (vdev->config.addr_learn_en)
3979                 vxge_debug_init(VXGE_TRACE,
3980                         "%s: MAC Address learning enabled", vdev->ndev->name);
3981 
3982         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3983                 if (!vxge_bVALn(vpath_mask, i, 1))
3984                         continue;
3985                 vxge_debug_ll_config(VXGE_TRACE,
3986                         "%s: MTU size - %d", vdev->ndev->name,
3987                         ((vdev->devh))->
3988                                 config.vp_config[i].mtu);
3989                 vxge_debug_init(VXGE_TRACE,
3990                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3991                         ((vdev->devh))->
3992                                 config.vp_config[i].rpa_strip_vlan_tag
3993                         ? "Enabled" : "Disabled");
3994                 vxge_debug_ll_config(VXGE_TRACE,
3995                         "%s: Max frags : %d", vdev->ndev->name,
3996                         ((vdev->devh))->
3997                                 config.vp_config[i].fifo.max_frags);
3998                 break;
3999         }
4000 }
4001 
4002 #ifdef CONFIG_PM
4003 /**
4004  * vxge_pm_suspend - vxge power management suspend entry point
4005  *
4006  */
4007 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4008 {
4009         return -ENOSYS;
4010 }
4011 /**
4012  * vxge_pm_resume - vxge power management resume entry point
4013  *
4014  */
4015 static int vxge_pm_resume(struct pci_dev *pdev)
4016 {
4017         return -ENOSYS;
4018 }
4019 
4020 #endif
4021 
4022 /**
4023  * vxge_io_error_detected - called when PCI error is detected
4024  * @pdev: Pointer to PCI device
4025  * @state: The current pci connection state
4026  *
4027  * This function is called after a PCI bus error affecting
4028  * this device has been detected.
4029  */
4030 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4031                                                 pci_channel_state_t state)
4032 {
4033         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4034         struct net_device *netdev = hldev->ndev;
4035 
4036         netif_device_detach(netdev);
4037 
4038         if (state == pci_channel_io_perm_failure)
4039                 return PCI_ERS_RESULT_DISCONNECT;
4040 
4041         if (netif_running(netdev)) {
4042                 /* Bring down the card, while avoiding PCI I/O */
4043                 do_vxge_close(netdev, 0);
4044         }
4045 
4046         pci_disable_device(pdev);
4047 
4048         return PCI_ERS_RESULT_NEED_RESET;
4049 }
4050 
4051 /**
4052  * vxge_io_slot_reset - called after the pci bus has been reset.
4053  * @pdev: Pointer to PCI device
4054  *
4055  * Restart the card from scratch, as if from a cold-boot.
4056  * At this point, the card has exprienced a hard reset,
4057  * followed by fixups by BIOS, and has its config space
4058  * set up identically to what it was at cold boot.
4059  */
4060 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4061 {
4062         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4063         struct net_device *netdev = hldev->ndev;
4064 
4065         struct vxgedev *vdev = netdev_priv(netdev);
4066 
4067         if (pci_enable_device(pdev)) {
4068                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4069                 return PCI_ERS_RESULT_DISCONNECT;
4070         }
4071 
4072         pci_set_master(pdev);
4073         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4074 
4075         return PCI_ERS_RESULT_RECOVERED;
4076 }
4077 
4078 /**
4079  * vxge_io_resume - called when traffic can start flowing again.
4080  * @pdev: Pointer to PCI device
4081  *
4082  * This callback is called when the error recovery driver tells
4083  * us that its OK to resume normal operation.
4084  */
4085 static void vxge_io_resume(struct pci_dev *pdev)
4086 {
4087         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4088         struct net_device *netdev = hldev->ndev;
4089 
4090         if (netif_running(netdev)) {
4091                 if (vxge_open(netdev)) {
4092                         netdev_err(netdev,
4093                                    "Can't bring device back up after reset\n");
4094                         return;
4095                 }
4096         }
4097 
4098         netif_device_attach(netdev);
4099 }
4100 
4101 static inline u32 vxge_get_num_vfs(u64 function_mode)
4102 {
4103         u32 num_functions = 0;
4104 
4105         switch (function_mode) {
4106         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4107         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4108                 num_functions = 8;
4109                 break;
4110         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4111                 num_functions = 1;
4112                 break;
4113         case VXGE_HW_FUNCTION_MODE_SRIOV:
4114         case VXGE_HW_FUNCTION_MODE_MRIOV:
4115         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4116                 num_functions = 17;
4117                 break;
4118         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4119                 num_functions = 4;
4120                 break;
4121         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4122                 num_functions = 2;
4123                 break;
4124         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4125                 num_functions = 8; /* TODO */
4126                 break;
4127         }
4128         return num_functions;
4129 }
4130 
4131 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4132 {
4133         struct __vxge_hw_device *hldev = vdev->devh;
4134         u32 maj, min, bld, cmaj, cmin, cbld;
4135         enum vxge_hw_status status;
4136         const struct firmware *fw;
4137         int ret;
4138 
4139         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4140         if (ret) {
4141                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4142                                 VXGE_DRIVER_NAME, fw_name);
4143                 goto out;
4144         }
4145 
4146         /* Load the new firmware onto the adapter */
4147         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4148         if (status != VXGE_HW_OK) {
4149                 vxge_debug_init(VXGE_ERR,
4150                                 "%s: FW image download to adapter failed '%s'.",
4151                                 VXGE_DRIVER_NAME, fw_name);
4152                 ret = -EIO;
4153                 goto out;
4154         }
4155 
4156         /* Read the version of the new firmware */
4157         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4158         if (status != VXGE_HW_OK) {
4159                 vxge_debug_init(VXGE_ERR,
4160                                 "%s: Upgrade read version failed '%s'.",
4161                                 VXGE_DRIVER_NAME, fw_name);
4162                 ret = -EIO;
4163                 goto out;
4164         }
4165 
4166         cmaj = vdev->config.device_hw_info.fw_version.major;
4167         cmin = vdev->config.device_hw_info.fw_version.minor;
4168         cbld = vdev->config.device_hw_info.fw_version.build;
4169         /* It's possible the version in /lib/firmware is not the latest version.
4170          * If so, we could get into a loop of trying to upgrade to the latest
4171          * and flashing the older version.
4172          */
4173         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4174             !override) {
4175                 ret = -EINVAL;
4176                 goto out;
4177         }
4178 
4179         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4180                maj, min, bld);
4181 
4182         /* Flash the adapter with the new firmware */
4183         status = vxge_hw_flash_fw(hldev);
4184         if (status != VXGE_HW_OK) {
4185                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4186                                 VXGE_DRIVER_NAME, fw_name);
4187                 ret = -EIO;
4188                 goto out;
4189         }
4190 
4191         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4192                "hard reset before using, thus requiring a system reboot or a "
4193                "hotplug event.\n");
4194 
4195 out:
4196         release_firmware(fw);
4197         return ret;
4198 }
4199 
4200 static int vxge_probe_fw_update(struct vxgedev *vdev)
4201 {
4202         u32 maj, min, bld;
4203         int ret, gpxe = 0;
4204         char *fw_name;
4205 
4206         maj = vdev->config.device_hw_info.fw_version.major;
4207         min = vdev->config.device_hw_info.fw_version.minor;
4208         bld = vdev->config.device_hw_info.fw_version.build;
4209 
4210         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4211                 return 0;
4212 
4213         /* Ignore the build number when determining if the current firmware is
4214          * "too new" to load the driver
4215          */
4216         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4217                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4218                                 "version, unable to load driver\n",
4219                                 VXGE_DRIVER_NAME);
4220                 return -EINVAL;
4221         }
4222 
4223         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4224          * work with this driver.
4225          */
4226         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4227                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4228                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4229                 return -EINVAL;
4230         }
4231 
4232         /* If file not specified, determine gPXE or not */
4233         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4234                 int i;
4235                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4236                         if (vdev->devh->eprom_versions[i]) {
4237                                 gpxe = 1;
4238                                 break;
4239                         }
4240         }
4241         if (gpxe)
4242                 fw_name = "vxge/X3fw-pxe.ncf";
4243         else
4244                 fw_name = "vxge/X3fw.ncf";
4245 
4246         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4247         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4248          * probe, so ignore them
4249          */
4250         if (ret != -EINVAL && ret != -ENOENT)
4251                 return -EIO;
4252         else
4253                 ret = 0;
4254 
4255         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4256             VXGE_FW_VER(maj, min, 0)) {
4257                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4258                                 " be used with this driver.",
4259                                 VXGE_DRIVER_NAME, maj, min, bld);
4260                 return -EINVAL;
4261         }
4262 
4263         return ret;
4264 }
4265 
4266 static int is_sriov_initialized(struct pci_dev *pdev)
4267 {
4268         int pos;
4269         u16 ctrl;
4270 
4271         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4272         if (pos) {
4273                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4274                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4275                         return 1;
4276         }
4277         return 0;
4278 }
4279 
4280 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4281         .link_up = vxge_callback_link_up,
4282         .link_down = vxge_callback_link_down,
4283         .crit_err = vxge_callback_crit_err,
4284 };
4285 
4286 /**
4287  * vxge_probe
4288  * @pdev : structure containing the PCI related information of the device.
4289  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4290  * Description:
4291  * This function is called when a new PCI device gets detected and initializes
4292  * it.
4293  * Return value:
4294  * returns 0 on success and negative on failure.
4295  *
4296  */
4297 static int
4298 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4299 {
4300         struct __vxge_hw_device *hldev;
4301         enum vxge_hw_status status;
4302         int ret;
4303         int high_dma = 0;
4304         u64 vpath_mask = 0;
4305         struct vxgedev *vdev;
4306         struct vxge_config *ll_config = NULL;
4307         struct vxge_hw_device_config *device_config = NULL;
4308         struct vxge_hw_device_attr attr;
4309         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4310         u8 *macaddr;
4311         struct vxge_mac_addrs *entry;
4312         static int bus = -1, device = -1;
4313         u32 host_type;
4314         u8 new_device = 0;
4315         enum vxge_hw_status is_privileged;
4316         u32 function_mode;
4317         u32 num_vfs = 0;
4318 
4319         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4320         attr.pdev = pdev;
4321 
4322         /* In SRIOV-17 mode, functions of the same adapter
4323          * can be deployed on different buses
4324          */
4325         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4326             !pdev->is_virtfn)
4327                 new_device = 1;
4328 
4329         bus = pdev->bus->number;
4330         device = PCI_SLOT(pdev->devfn);
4331 
4332         if (new_device) {
4333                 if (driver_config->config_dev_cnt &&
4334                    (driver_config->config_dev_cnt !=
4335                         driver_config->total_dev_cnt))
4336                         vxge_debug_init(VXGE_ERR,
4337                                 "%s: Configured %d of %d devices",
4338                                 VXGE_DRIVER_NAME,
4339                                 driver_config->config_dev_cnt,
4340                                 driver_config->total_dev_cnt);
4341                 driver_config->config_dev_cnt = 0;
4342                 driver_config->total_dev_cnt = 0;
4343         }
4344 
4345         /* Now making the CPU based no of vpath calculation
4346          * applicable for individual functions as well.
4347          */
4348         driver_config->g_no_cpus = 0;
4349         driver_config->vpath_per_dev = max_config_vpath;
4350 
4351         driver_config->total_dev_cnt++;
4352         if (++driver_config->config_dev_cnt > max_config_dev) {
4353                 ret = 0;
4354                 goto _exit0;
4355         }
4356 
4357         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4358                 GFP_KERNEL);
4359         if (!device_config) {
4360                 ret = -ENOMEM;
4361                 vxge_debug_init(VXGE_ERR,
4362                         "device_config : malloc failed %s %d",
4363                         __FILE__, __LINE__);
4364                 goto _exit0;
4365         }
4366 
4367         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4368         if (!ll_config) {
4369                 ret = -ENOMEM;
4370                 vxge_debug_init(VXGE_ERR,
4371                         "device_config : malloc failed %s %d",
4372                         __FILE__, __LINE__);
4373                 goto _exit0;
4374         }
4375         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4376         ll_config->intr_type = MSI_X;
4377         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4378         ll_config->rth_steering = RTH_STEERING;
4379 
4380         /* get the default configuration parameters */
4381         vxge_hw_device_config_default_get(device_config);
4382 
4383         /* initialize configuration parameters */
4384         vxge_device_config_init(device_config, &ll_config->intr_type);
4385 
4386         ret = pci_enable_device(pdev);
4387         if (ret) {
4388                 vxge_debug_init(VXGE_ERR,
4389                         "%s : can not enable PCI device", __func__);
4390                 goto _exit0;
4391         }
4392 
4393         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4394                 vxge_debug_ll_config(VXGE_TRACE,
4395                         "%s : using 64bit DMA", __func__);
4396 
4397                 high_dma = 1;
4398 
4399                 if (pci_set_consistent_dma_mask(pdev,
4400                                                 DMA_BIT_MASK(64))) {
4401                         vxge_debug_init(VXGE_ERR,
4402                                 "%s : unable to obtain 64bit DMA for "
4403                                 "consistent allocations", __func__);
4404                         ret = -ENOMEM;
4405                         goto _exit1;
4406                 }
4407         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4408                 vxge_debug_ll_config(VXGE_TRACE,
4409                         "%s : using 32bit DMA", __func__);
4410         } else {
4411                 ret = -ENOMEM;
4412                 goto _exit1;
4413         }
4414 
4415         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4416         if (ret) {
4417                 vxge_debug_init(VXGE_ERR,
4418                         "%s : request regions failed", __func__);
4419                 goto _exit1;
4420         }
4421 
4422         pci_set_master(pdev);
4423 
4424         attr.bar0 = pci_ioremap_bar(pdev, 0);
4425         if (!attr.bar0) {
4426                 vxge_debug_init(VXGE_ERR,
4427                         "%s : cannot remap io memory bar0", __func__);
4428                 ret = -ENODEV;
4429                 goto _exit2;
4430         }
4431         vxge_debug_ll_config(VXGE_TRACE,
4432                 "pci ioremap bar0: %p:0x%llx",
4433                 attr.bar0,
4434                 (unsigned long long)pci_resource_start(pdev, 0));
4435 
4436         status = vxge_hw_device_hw_info_get(attr.bar0,
4437                         &ll_config->device_hw_info);
4438         if (status != VXGE_HW_OK) {
4439                 vxge_debug_init(VXGE_ERR,
4440                         "%s: Reading of hardware info failed."
4441                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4442                 ret = -EINVAL;
4443                 goto _exit3;
4444         }
4445 
4446         vpath_mask = ll_config->device_hw_info.vpath_mask;
4447         if (vpath_mask == 0) {
4448                 vxge_debug_ll_config(VXGE_TRACE,
4449                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4450                 ret = -EINVAL;
4451                 goto _exit3;
4452         }
4453 
4454         vxge_debug_ll_config(VXGE_TRACE,
4455                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4456                 (unsigned long long)vpath_mask);
4457 
4458         function_mode = ll_config->device_hw_info.function_mode;
4459         host_type = ll_config->device_hw_info.host_type;
4460         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4461                 ll_config->device_hw_info.func_id);
4462 
4463         /* Check how many vpaths are available */
4464         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4465                 if (!((vpath_mask) & vxge_mBIT(i)))
4466                         continue;
4467                 max_vpath_supported++;
4468         }
4469 
4470         if (new_device)
4471                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4472 
4473         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4474         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4475            (ll_config->intr_type != INTA)) {
4476                 ret = pci_enable_sriov(pdev, num_vfs);
4477                 if (ret)
4478                         vxge_debug_ll_config(VXGE_ERR,
4479                                 "Failed in enabling SRIOV mode: %d\n", ret);
4480                         /* No need to fail out, as an error here is non-fatal */
4481         }
4482 
4483         /*
4484          * Configure vpaths and get driver configured number of vpaths
4485          * which is less than or equal to the maximum vpaths per function.
4486          */
4487         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4488         if (!no_of_vpath) {
4489                 vxge_debug_ll_config(VXGE_ERR,
4490                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4491                 ret = 0;
4492                 goto _exit3;
4493         }
4494 
4495         /* Setting driver callbacks */
4496         attr.uld_callbacks = &vxge_callbacks;
4497 
4498         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4499         if (status != VXGE_HW_OK) {
4500                 vxge_debug_init(VXGE_ERR,
4501                         "Failed to initialize device (%d)", status);
4502                 ret = -EINVAL;
4503                 goto _exit3;
4504         }
4505 
4506         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4507                         ll_config->device_hw_info.fw_version.minor,
4508                         ll_config->device_hw_info.fw_version.build) >=
4509             VXGE_EPROM_FW_VER) {
4510                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4511 
4512                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4513                 if (status != VXGE_HW_OK) {
4514                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4515                                         VXGE_DRIVER_NAME);
4516                         /* This is a non-fatal error, continue */
4517                 }
4518 
4519                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4520                         hldev->eprom_versions[i] = img[i].version;
4521                         if (!img[i].is_valid)
4522                                 break;
4523                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4524                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4525                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4526                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4527                                         VXGE_EPROM_IMG_FIX(img[i].version),
4528                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4529                 }
4530         }
4531 
4532         /* if FCS stripping is not disabled in MAC fail driver load */
4533         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4534         if (status != VXGE_HW_OK) {
4535                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4536                                 " failing driver load", VXGE_DRIVER_NAME);
4537                 ret = -EINVAL;
4538                 goto _exit4;
4539         }
4540 
4541         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4542          * due to the fact that HWTS is using the FCS as the location of the
4543          * timestamp.  The HW FCS checking will still correctly determine if
4544          * there is a valid checksum, and the FCS is being removed by the driver
4545          * anyway.  So no fucntionality is being lost.  Since it is always
4546          * enabled, we now simply use the ioctl call to set whether or not the
4547          * driver should be paying attention to the HWTS.
4548          */
4549         if (is_privileged == VXGE_HW_OK) {
4550                 status = vxge_timestamp_config(hldev);
4551                 if (status != VXGE_HW_OK) {
4552                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4553                                         VXGE_DRIVER_NAME);
4554                         ret = -EFAULT;
4555                         goto _exit4;
4556                 }
4557         }
4558 
4559         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4560 
4561         /* set private device info */
4562         pci_set_drvdata(pdev, hldev);
4563 
4564         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4565         ll_config->addr_learn_en = addr_learn_en;
4566         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4567         ll_config->rth_hash_type_tcpipv4 = 1;
4568         ll_config->rth_hash_type_ipv4 = 0;
4569         ll_config->rth_hash_type_tcpipv6 = 0;
4570         ll_config->rth_hash_type_ipv6 = 0;
4571         ll_config->rth_hash_type_tcpipv6ex = 0;
4572         ll_config->rth_hash_type_ipv6ex = 0;
4573         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4574         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4575         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4576 
4577         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4578                                    &vdev);
4579         if (ret) {
4580                 ret = -EINVAL;
4581                 goto _exit4;
4582         }
4583 
4584         ret = vxge_probe_fw_update(vdev);
4585         if (ret)
4586                 goto _exit5;
4587 
4588         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4589         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4590                 vxge_hw_device_trace_level_get(hldev));
4591 
4592         /* set private HW device info */
4593         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4594         vdev->bar0 = attr.bar0;
4595         vdev->max_vpath_supported = max_vpath_supported;
4596         vdev->no_of_vpath = no_of_vpath;
4597 
4598         /* Virtual Path count */
4599         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4600                 if (!vxge_bVALn(vpath_mask, i, 1))
4601                         continue;
4602                 if (j >= vdev->no_of_vpath)
4603                         break;
4604 
4605                 vdev->vpaths[j].is_configured = 1;
4606                 vdev->vpaths[j].device_id = i;
4607                 vdev->vpaths[j].ring.driver_id = j;
4608                 vdev->vpaths[j].vdev = vdev;
4609                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4610                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4611                                 ll_config->device_hw_info.mac_addrs[i],
4612                                 ETH_ALEN);
4613 
4614                 /* Initialize the mac address list header */
4615                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4616 
4617                 vdev->vpaths[j].mac_addr_cnt = 0;
4618                 vdev->vpaths[j].mcast_addr_cnt = 0;
4619                 j++;
4620         }
4621         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4622         vdev->max_config_port = max_config_port;
4623 
4624         vdev->vlan_tag_strip = vlan_tag_strip;
4625 
4626         /* map the hashing selector table to the configured vpaths */
4627         for (i = 0; i < vdev->no_of_vpath; i++)
4628                 vdev->vpath_selector[i] = vpath_selector[i];
4629 
4630         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4631 
4632         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4633         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4634         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4635 
4636         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4637                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4638 
4639         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4640                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4641 
4642         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4643                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4644 
4645         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4646                 vdev->ndev->name, macaddr);
4647 
4648         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4649                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4650 
4651         vxge_debug_init(VXGE_TRACE,
4652                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4653                 ll_config->device_hw_info.fw_version.version,
4654                 ll_config->device_hw_info.fw_date.date);
4655 
4656         if (new_device) {
4657                 switch (ll_config->device_hw_info.function_mode) {
4658                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4659                         vxge_debug_init(VXGE_TRACE,
4660                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4661                 break;
4662                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4663                         vxge_debug_init(VXGE_TRACE,
4664                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4665                 break;
4666                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4667                         vxge_debug_init(VXGE_TRACE,
4668                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4669                 break;
4670                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4671                         vxge_debug_init(VXGE_TRACE,
4672                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4673                 break;
4674                 }
4675         }
4676 
4677         vxge_print_parm(vdev, vpath_mask);
4678 
4679         /* Store the fw version for ethttool option */
4680         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4681         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4682 
4683         /* Copy the station mac address to the list */
4684         for (i = 0; i < vdev->no_of_vpath; i++) {
4685                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4686                 if (NULL == entry) {
4687                         vxge_debug_init(VXGE_ERR,
4688                                 "%s: mac_addr_list : memory allocation failed",
4689                                 vdev->ndev->name);
4690                         ret = -EPERM;
4691                         goto _exit6;
4692                 }
4693                 macaddr = (u8 *)&entry->macaddr;
4694                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4695                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4696                 vdev->vpaths[i].mac_addr_cnt = 1;
4697         }
4698 
4699         kfree(device_config);
4700 
4701         /*
4702          * INTA is shared in multi-function mode. This is unlike the INTA
4703          * implementation in MR mode, where each VH has its own INTA message.
4704          * - INTA is masked (disabled) as long as at least one function sets
4705          * its TITAN_MASK_ALL_INT.ALARM bit.
4706          * - INTA is unmasked (enabled) when all enabled functions have cleared
4707          * their own TITAN_MASK_ALL_INT.ALARM bit.
4708          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4709          * Though this driver leaves the top level interrupts unmasked while
4710          * leaving the required module interrupt bits masked on exit, there
4711          * could be a rougue driver around that does not follow this procedure
4712          * resulting in a failure to generate interrupts. The following code is
4713          * present to prevent such a failure.
4714          */
4715 
4716         if (ll_config->device_hw_info.function_mode ==
4717                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4718                 if (vdev->config.intr_type == INTA)
4719                         vxge_hw_device_unmask_all(hldev);
4720 
4721         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4722                 vdev->ndev->name, __func__, __LINE__);
4723 
4724         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4725         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4726                 vxge_hw_device_trace_level_get(hldev));
4727 
4728         kfree(ll_config);
4729         return 0;
4730 
4731 _exit6:
4732         for (i = 0; i < vdev->no_of_vpath; i++)
4733                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4734 _exit5:
4735         vxge_device_unregister(hldev);
4736 _exit4:
4737         vxge_hw_device_terminate(hldev);
4738         pci_disable_sriov(pdev);
4739 _exit3:
4740         iounmap(attr.bar0);
4741 _exit2:
4742         pci_release_region(pdev, 0);
4743 _exit1:
4744         pci_disable_device(pdev);
4745 _exit0:
4746         kfree(ll_config);
4747         kfree(device_config);
4748         driver_config->config_dev_cnt--;
4749         driver_config->total_dev_cnt--;
4750         return ret;
4751 }
4752 
4753 /**
4754  * vxge_rem_nic - Free the PCI device
4755  * @pdev: structure containing the PCI related information of the device.
4756  * Description: This function is called by the Pci subsystem to release a
4757  * PCI device and free up all resource held up by the device.
4758  */
4759 static void vxge_remove(struct pci_dev *pdev)
4760 {
4761         struct __vxge_hw_device *hldev;
4762         struct vxgedev *vdev;
4763         int i;
4764 
4765         hldev = pci_get_drvdata(pdev);
4766         if (hldev == NULL)
4767                 return;
4768 
4769         vdev = netdev_priv(hldev->ndev);
4770 
4771         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4772         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4773                         __func__);
4774 
4775         for (i = 0; i < vdev->no_of_vpath; i++)
4776                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4777 
4778         vxge_device_unregister(hldev);
4779         /* Do not call pci_disable_sriov here, as it will break child devices */
4780         vxge_hw_device_terminate(hldev);
4781         iounmap(vdev->bar0);
4782         pci_release_region(pdev, 0);
4783         pci_disable_device(pdev);
4784         driver_config->config_dev_cnt--;
4785         driver_config->total_dev_cnt--;
4786 
4787         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4788                         __func__, __LINE__);
4789         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4790                              __LINE__);
4791 }
4792 
4793 static const struct pci_error_handlers vxge_err_handler = {
4794         .error_detected = vxge_io_error_detected,
4795         .slot_reset = vxge_io_slot_reset,
4796         .resume = vxge_io_resume,
4797 };
4798 
4799 static struct pci_driver vxge_driver = {
4800         .name = VXGE_DRIVER_NAME,
4801         .id_table = vxge_id_table,
4802         .probe = vxge_probe,
4803         .remove = vxge_remove,
4804 #ifdef CONFIG_PM
4805         .suspend = vxge_pm_suspend,
4806         .resume = vxge_pm_resume,
4807 #endif
4808         .err_handler = &vxge_err_handler,
4809 };
4810 
4811 static int __init
4812 vxge_starter(void)
4813 {
4814         int ret = 0;
4815 
4816         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4817         pr_info("Driver version: %s\n", DRV_VERSION);
4818 
4819         verify_bandwidth();
4820 
4821         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4822         if (!driver_config)
4823                 return -ENOMEM;
4824 
4825         ret = pci_register_driver(&vxge_driver);
4826         if (ret) {
4827                 kfree(driver_config);
4828                 goto err;
4829         }
4830 
4831         if (driver_config->config_dev_cnt &&
4832            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4833                 vxge_debug_init(VXGE_ERR,
4834                         "%s: Configured %d of %d devices",
4835                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4836                         driver_config->total_dev_cnt);
4837 err:
4838         return ret;
4839 }
4840 
4841 static void __exit
4842 vxge_closer(void)
4843 {
4844         pci_unregister_driver(&vxge_driver);
4845         kfree(driver_config);
4846 }
4847 module_init(vxge_starter);
4848 module_exit(vxge_closer);