git.oblomov.eu Git - linux-2.6/blob - drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2009 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19
  20 MODULE_VERSION(DRV_VER);
  21 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  22 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  23 MODULE_AUTHOR("ServerEngines Corporation");
  24 MODULE_LICENSE("GPL");
  25
  26 static unsigned int rx_frag_size = 2048;
  27 module_param(rx_frag_size, uint, S_IRUGO);
  28 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  29
  30 #define BE_VENDOR_ID            0x19a2
  31 #define BE2_DEVICE_ID_1         0x0211
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
  34         { 0 }
  35 };
  36 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  37
  38 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  39 {
  40         struct be_dma_mem *mem = &q->dma_mem;
  41         if (mem->va)
  42                 pci_free_consistent(adapter->pdev, mem->size,
  43                         mem->va, mem->dma);
  44 }
  45
  46 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  47                 u16 len, u16 entry_size)
  48 {
  49         struct be_dma_mem *mem = &q->dma_mem;
  50
  51         memset(q, 0, sizeof(*q));
  52         q->len = len;
  53         q->entry_size = entry_size;
  54         mem->size = len * entry_size;
  55         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  56         if (!mem->va)
  57                 return -1;
  58         memset(mem->va, 0, mem->size);
  59         return 0;
  60 }
  61
  62 static inline void *queue_head_node(struct be_queue_info *q)
  63 {
  64         return q->dma_mem.va + q->head * q->entry_size;
  65 }
  66
  67 static inline void *queue_tail_node(struct be_queue_info *q)
  68 {
  69         return q->dma_mem.va + q->tail * q->entry_size;
  70 }
  71
  72 static inline void queue_head_inc(struct be_queue_info *q)
  73 {
  74         index_inc(&q->head, q->len);
  75 }
  76
  77 static inline void queue_tail_inc(struct be_queue_info *q)
  78 {
  79         index_inc(&q->tail, q->len);
  80 }
  81
  82 static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
  83 {
  84         u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  85         u32 reg = ioread32(addr);
  86         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  87         if (!enabled && enable) {
  88                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  89         } else if (enabled && !enable) {
  90                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  91         } else {
  92                 printk(KERN_WARNING DRV_NAME
  93                         ": bad value in membar_int_ctrl reg=0x%x\n", reg);
  94                 return;
  95         }
  96         iowrite32(reg, addr);
  97 }
  98
  99 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 100 {
 101         u32 val = 0;
 102         val |= qid & DB_RQ_RING_ID_MASK;
 103         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
 104         iowrite32(val, ctrl->db + DB_RQ_OFFSET);
 105 }
 106
 107 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 108 {
 109         u32 val = 0;
 110         val |= qid & DB_TXULP_RING_ID_MASK;
 111         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 112         iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
 113 }
 114
 115 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
 116                 bool arm, bool clear_int, u16 num_popped)
 117 {
 118         u32 val = 0;
 119         val |= qid & DB_EQ_RING_ID_MASK;
 120         if (arm)
 121                 val |= 1 << DB_EQ_REARM_SHIFT;
 122         if (clear_int)
 123                 val |= 1 << DB_EQ_CLR_SHIFT;
 124         val |= 1 << DB_EQ_EVNT_SHIFT;
 125         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 126         iowrite32(val, ctrl->db + DB_EQ_OFFSET);
 127 }
 128
 129 static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
 130                 bool arm, u16 num_popped)
 131 {
 132         u32 val = 0;
 133         val |= qid & DB_CQ_RING_ID_MASK;
 134         if (arm)
 135                 val |= 1 << DB_CQ_REARM_SHIFT;
 136         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 137         iowrite32(val, ctrl->db + DB_CQ_OFFSET);
 138 }
 139
 140
 141 static int be_mac_addr_set(struct net_device *netdev, void *p)
 142 {
 143         struct be_adapter *adapter = netdev_priv(netdev);
 144         struct sockaddr *addr = p;
 145         int status = 0;
 146
 147         if (netif_running(netdev)) {
 148                 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
 149                                 adapter->pmac_id);
 150                 if (status)
 151                         return status;
 152
 153                 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
 154                                 adapter->if_handle, &adapter->pmac_id);
 155         }
 156
 157         if (!status)
 158                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 159
 160         return status;
 161 }
 162
 163 static void netdev_stats_update(struct be_adapter *adapter)
 164 {
 165         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 166         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 167         struct be_port_rxf_stats *port_stats =
 168                         &rxf_stats->port[adapter->port_num];
 169         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 170
 171         dev_stats->rx_packets = port_stats->rx_total_frames;
 172         dev_stats->tx_packets = port_stats->tx_unicastframes +
 173                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 174         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 175                                 (u64) port_stats->rx_bytes_lsd;
 176         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 177                                 (u64) port_stats->tx_bytes_lsd;
 178
 179         /* bad pkts received */
 180         dev_stats->rx_errors = port_stats->rx_crc_errors +
 181                 port_stats->rx_alignment_symbol_errors +
 182                 port_stats->rx_in_range_errors +
 183                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 184
 185         /*  packet transmit problems */
 186         dev_stats->tx_errors = 0;
 187
 188         /*  no space in linux buffers */
 189         dev_stats->rx_dropped = 0;
 190
 191         /* no space available in linux */
 192         dev_stats->tx_dropped = 0;
 193
 194         dev_stats->multicast = port_stats->tx_multicastframes;
 195         dev_stats->collisions = 0;
 196
 197         /* detailed rx errors */
 198         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 199                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 200         /* receive ring buffer overflow */
 201         dev_stats->rx_over_errors = 0;
 202         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 203
 204         /* frame alignment errors */
 205         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 206         /* receiver fifo overrun */
 207         /* drops_no_pbuf is no per i/f, it's per BE card */
 208         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 209                                         port_stats->rx_input_fifo_overflow +
 210                                         rxf_stats->rx_drops_no_pbuf;
 211         /* receiver missed packetd */
 212         dev_stats->rx_missed_errors = 0;
 213         /* detailed tx_errors */
 214         dev_stats->tx_aborted_errors = 0;
 215         dev_stats->tx_carrier_errors = 0;
 216         dev_stats->tx_fifo_errors = 0;
 217         dev_stats->tx_heartbeat_errors = 0;
 218         dev_stats->tx_window_errors = 0;
 219 }
 220
 221 static void be_link_status_update(struct be_adapter *adapter)
 222 {
 223         struct be_link_info *prev = &adapter->link;
 224         struct be_link_info now = { 0 };
 225         struct net_device *netdev = adapter->netdev;
 226
 227         be_cmd_link_status_query(&adapter->ctrl, &now);
 228
 229         /* If link came up or went down */
 230         if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
 231                         prev->speed == PHY_LINK_SPEED_ZERO)) {
 232                 if (now.speed == PHY_LINK_SPEED_ZERO) {
 233                         netif_stop_queue(netdev);
 234                         netif_carrier_off(netdev);
 235                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 236                 } else {
 237                         netif_start_queue(netdev);
 238                         netif_carrier_on(netdev);
 239                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 240                 }
 241         }
 242         *prev = now;
 243 }
 244
 245 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 246 static void be_rx_eqd_update(struct be_adapter *adapter)
 247 {
 248         struct be_ctrl_info *ctrl = &adapter->ctrl;
 249         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 250         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 251         ulong now = jiffies;
 252         u32 eqd;
 253
 254         if (!rx_eq->enable_aic)
 255                 return;
 256
 257         /* Wrapped around */
 258         if (time_before(now, stats->rx_fps_jiffies)) {
 259                 stats->rx_fps_jiffies = now;
 260                 return;
 261         }
 262
 263         /* Update once a second */
 264         if ((now - stats->rx_fps_jiffies) < HZ)
 265                 return;
 266
 267         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 268                         ((now - stats->rx_fps_jiffies) / HZ);
 269
 270         stats->rx_fps_jiffies = now;
 271         stats->be_prev_rx_frags = stats->be_rx_frags;
 272         eqd = stats->be_rx_fps / 110000;
 273         eqd = eqd << 3;
 274         if (eqd > rx_eq->max_eqd)
 275                 eqd = rx_eq->max_eqd;
 276         if (eqd < rx_eq->min_eqd)
 277                 eqd = rx_eq->min_eqd;
 278         if (eqd < 10)
 279                 eqd = 0;
 280         if (eqd != rx_eq->cur_eqd)
 281                 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
 282
 283         rx_eq->cur_eqd = eqd;
 284 }
 285
 286 static struct net_device_stats *be_get_stats(struct net_device *dev)
 287 {
 288         struct be_adapter *adapter = netdev_priv(dev);
 289
 290         return &adapter->stats.net_stats;
 291 }
 292
 293 static void be_tx_rate_update(struct be_adapter *adapter)
 294 {
 295         struct be_drvr_stats *stats = drvr_stats(adapter);
 296         ulong now = jiffies;
 297
 298         /* Wrapped around? */
 299         if (time_before(now, stats->be_tx_jiffies)) {
 300                 stats->be_tx_jiffies = now;
 301                 return;
 302         }
 303
 304         /* Update tx rate once in two seconds */
 305         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 306                 u32 r;
 307                 r = (stats->be_tx_bytes - stats->be_tx_bytes_prev) /
 308                         ((now - stats->be_tx_jiffies) / HZ);
 309                 r = r / 1000000;                        /* M bytes/s */
 310                 stats->be_tx_rate = r * 8;      /* M bits/s */
 311                 stats->be_tx_jiffies = now;
 312                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 313         }
 314 }
 315
 316 static void be_tx_stats_update(struct be_adapter *adapter,
 317                         u32 wrb_cnt, u32 copied, bool stopped)
 318 {
 319         struct be_drvr_stats *stats = drvr_stats(adapter);
 320         stats->be_tx_reqs++;
 321         stats->be_tx_wrbs += wrb_cnt;
 322         stats->be_tx_bytes += copied;
 323         if (stopped)
 324                 stats->be_tx_stops++;
 325 }
 326
 327 /* Determine number of WRB entries needed to xmit data in an skb */
 328 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 329 {
 330         int cnt = 0;
 331         while (skb) {
 332                 if (skb->len > skb->data_len)
 333                         cnt++;
 334                 cnt += skb_shinfo(skb)->nr_frags;
 335                 skb = skb_shinfo(skb)->frag_list;
 336         }
 337         /* to account for hdr wrb */
 338         cnt++;
 339         if (cnt & 1) {
 340                 /* add a dummy to make it an even num */
 341                 cnt++;
 342                 *dummy = true;
 343         } else
 344                 *dummy = false;
 345         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 346         return cnt;
 347 }
 348
 349 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 350 {
 351         wrb->frag_pa_hi = upper_32_bits(addr);
 352         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 353         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 354 }
 355
 356 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 357                 bool vlan, u32 wrb_cnt, u32 len)
 358 {
 359         memset(hdr, 0, sizeof(*hdr));
 360
 361         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 362
 363         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 364                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 365                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 366                         hdr, skb_shinfo(skb)->gso_size);
 367         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 368                 if (is_tcp_pkt(skb))
 369                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 370                 else if (is_udp_pkt(skb))
 371                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 372         }
 373
 374         if (vlan && vlan_tx_tag_present(skb)) {
 375                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 376                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 377                         hdr, vlan_tx_tag_get(skb));
 378         }
 379
 380         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 381         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 382         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 383         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 384 }
 385
 386
 387 static int make_tx_wrbs(struct be_adapter *adapter,
 388                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 389 {
 390         u64 busaddr;
 391         u32 i, copied = 0;
 392         struct pci_dev *pdev = adapter->pdev;
 393         struct sk_buff *first_skb = skb;
 394         struct be_queue_info *txq = &adapter->tx_obj.q;
 395         struct be_eth_wrb *wrb;
 396         struct be_eth_hdr_wrb *hdr;
 397
 398         atomic_add(wrb_cnt, &txq->used);
 399         hdr = queue_head_node(txq);
 400         queue_head_inc(txq);
 401
 402         while (skb) {
 403                 if (skb->len > skb->data_len) {
 404                         int len = skb->len - skb->data_len;
 405                         busaddr = pci_map_single(pdev, skb->data, len,
 406                                         PCI_DMA_TODEVICE);
 407                         wrb = queue_head_node(txq);
 408                         wrb_fill(wrb, busaddr, len);
 409                         be_dws_cpu_to_le(wrb, sizeof(*wrb));
 410                         queue_head_inc(txq);
 411                         copied += len;
 412                 }
 413
 414                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 415                         struct skb_frag_struct *frag =
 416                                 &skb_shinfo(skb)->frags[i];
 417                         busaddr = pci_map_page(pdev, frag->page,
 418                                         frag->page_offset,
 419                                         frag->size, PCI_DMA_TODEVICE);
 420                         wrb = queue_head_node(txq);
 421                         wrb_fill(wrb, busaddr, frag->size);
 422                         be_dws_cpu_to_le(wrb, sizeof(*wrb));
 423                         queue_head_inc(txq);
 424                         copied += frag->size;
 425                 }
 426                 skb = skb_shinfo(skb)->frag_list;
 427         }
 428
 429         if (dummy_wrb) {
 430                 wrb = queue_head_node(txq);
 431                 wrb_fill(wrb, 0, 0);
 432                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 433                 queue_head_inc(txq);
 434         }
 435
 436         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 437                 wrb_cnt, copied);
 438         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 439
 440         return copied;
 441 }
 442
 443 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 444 {
 445         struct be_adapter *adapter = netdev_priv(netdev);
 446         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 447         struct be_queue_info *txq = &tx_obj->q;
 448         u32 wrb_cnt = 0, copied = 0;
 449         u32 start = txq->head;
 450         bool dummy_wrb, stopped = false;
 451
 452         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 453
 454         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 455
 456         /* record the sent skb in the sent_skb table */
 457         BUG_ON(tx_obj->sent_skb_list[start]);
 458         tx_obj->sent_skb_list[start] = skb;
 459
 460         /* Ensure that txq has space for the next skb; Else stop the queue
 461          * *BEFORE* ringing the tx doorbell, so that we serialze the
 462          * tx compls of the current transmit which'll wake up the queue
 463          */
 464         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 465                 netif_stop_queue(netdev);
 466                 stopped = true;
 467         }
 468
 469         be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
 470
 471         netdev->trans_start = jiffies;
 472
 473         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 474         return NETDEV_TX_OK;
 475 }
 476
 477 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 478 {
 479         struct be_adapter *adapter = netdev_priv(netdev);
 480         if (new_mtu < BE_MIN_MTU ||
 481                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 482                 dev_info(&adapter->pdev->dev,
 483                         "MTU must be between %d and %d bytes\n",
 484                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 485                 return -EINVAL;
 486         }
 487         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 488                         netdev->mtu, new_mtu);
 489         netdev->mtu = new_mtu;
 490         return 0;
 491 }
 492
 493 /*
 494  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 495  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 496  * set the BE in promiscuous VLAN mode.
 497  */
 498 static void be_vid_config(struct net_device *netdev)
 499 {
 500         struct be_adapter *adapter = netdev_priv(netdev);
 501         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 502         u16 ntags = 0, i;
 503
 504         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 505                 /* Construct VLAN Table to give to HW */
 506                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 507                         if (adapter->vlan_tag[i]) {
 508                                 vtag[ntags] = cpu_to_le16(i);
 509                                 ntags++;
 510                         }
 511                 }
 512                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 513                         vtag, ntags, 1, 0);
 514         } else {
 515                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 516                         NULL, 0, 1, 1);
 517         }
 518 }
 519
 520 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 521 {
 522         struct be_adapter *adapter = netdev_priv(netdev);
 523         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 524         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 525         struct be_ctrl_info *ctrl = &adapter->ctrl;
 526
 527         be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
 528         be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
 529         adapter->vlan_grp = grp;
 530         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
 531         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
 532 }
 533
 534 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 535 {
 536         struct be_adapter *adapter = netdev_priv(netdev);
 537
 538         adapter->num_vlans++;
 539         adapter->vlan_tag[vid] = 1;
 540
 541         be_vid_config(netdev);
 542 }
 543
 544 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 545 {
 546         struct be_adapter *adapter = netdev_priv(netdev);
 547
 548         adapter->num_vlans--;
 549         adapter->vlan_tag[vid] = 0;
 550
 551         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 552         be_vid_config(netdev);
 553 }
 554
 555 static void be_set_multicast_filter(struct net_device *netdev)
 556 {
 557         struct be_adapter *adapter = netdev_priv(netdev);
 558         struct dev_mc_list *mc_ptr;
 559         u8 mac_addr[32][ETH_ALEN];
 560         int i = 0;
 561
 562         if (netdev->flags & IFF_ALLMULTI) {
 563                 /* set BE in Multicast promiscuous */
 564                 be_cmd_mcast_mac_set(&adapter->ctrl,
 565                                         adapter->if_handle, NULL, 0, true);
 566                 return;
 567         }
 568
 569         for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
 570                 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
 571                 if (++i >= 32) {
 572                         be_cmd_mcast_mac_set(&adapter->ctrl,
 573                                 adapter->if_handle, &mac_addr[0][0], i, false);
 574                         i = 0;
 575                 }
 576
 577         }
 578
 579         if (i) {
 580                 /* reset the promiscuous mode also. */
 581                 be_cmd_mcast_mac_set(&adapter->ctrl,
 582                         adapter->if_handle, &mac_addr[0][0], i, false);
 583         }
 584 }
 585
 586 static void be_set_multicast_list(struct net_device *netdev)
 587 {
 588         struct be_adapter *adapter = netdev_priv(netdev);
 589
 590         if (netdev->flags & IFF_PROMISC) {
 591                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
 592         } else {
 593                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
 594                 be_set_multicast_filter(netdev);
 595         }
 596 }
 597
 598 static void be_rx_rate_update(struct be_adapter *adapter)
 599 {
 600         struct be_drvr_stats *stats = drvr_stats(adapter);
 601         ulong now = jiffies;
 602         u32 rate;
 603
 604         /* Wrapped around */
 605         if (time_before(now, stats->be_rx_jiffies)) {
 606                 stats->be_rx_jiffies = now;
 607                 return;
 608         }
 609
 610         /* Update the rate once in two seconds */
 611         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 612                 return;
 613
 614         rate = (stats->be_rx_bytes - stats->be_rx_bytes_prev) /
 615                 ((now - stats->be_rx_jiffies) / HZ);
 616         rate = rate / 1000000;  /* MB/Sec */
 617         stats->be_rx_rate = rate * 8;   /* Mega Bits/Sec */
 618         stats->be_rx_jiffies = now;
 619         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 620 }
 621
 622 static void be_rx_stats_update(struct be_adapter *adapter,
 623                 u32 pktsize, u16 numfrags)
 624 {
 625         struct be_drvr_stats *stats = drvr_stats(adapter);
 626
 627         stats->be_rx_compl++;
 628         stats->be_rx_frags += numfrags;
 629         stats->be_rx_bytes += pktsize;
 630 }
 631
 632 static struct be_rx_page_info *
 633 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 634 {
 635         struct be_rx_page_info *rx_page_info;
 636         struct be_queue_info *rxq = &adapter->rx_obj.q;
 637
 638         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 639         BUG_ON(!rx_page_info->page);
 640
 641         if (rx_page_info->last_page_user)
 642                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 643                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 644
 645         atomic_dec(&rxq->used);
 646         return rx_page_info;
 647 }
 648
 649 /* Throwaway the data in the Rx completion */
 650 static void be_rx_compl_discard(struct be_adapter *adapter,
 651                         struct be_eth_rx_compl *rxcp)
 652 {
 653         struct be_queue_info *rxq = &adapter->rx_obj.q;
 654         struct be_rx_page_info *page_info;
 655         u16 rxq_idx, i, num_rcvd;
 656
 657         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 658         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 659
 660         for (i = 0; i < num_rcvd; i++) {
 661                 page_info = get_rx_page_info(adapter, rxq_idx);
 662                 put_page(page_info->page);
 663                 memset(page_info, 0, sizeof(*page_info));
 664                 index_inc(&rxq_idx, rxq->len);
 665         }
 666 }
 667
 668 /*
 669  * skb_fill_rx_data forms a complete skb for an ether frame
 670  * indicated by rxcp.
 671  */
 672 static void skb_fill_rx_data(struct be_adapter *adapter,
 673                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 674 {
 675         struct be_queue_info *rxq = &adapter->rx_obj.q;
 676         struct be_rx_page_info *page_info;
 677         u16 rxq_idx, i, num_rcvd;
 678         u32 pktsize, hdr_len, curr_frag_len;
 679         u8 *start;
 680
 681         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 682         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 683         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 684
 685         page_info = get_rx_page_info(adapter, rxq_idx);
 686
 687         start = page_address(page_info->page) + page_info->page_offset;
 688         prefetch(start);
 689
 690         /* Copy data in the first descriptor of this completion */
 691         curr_frag_len = min(pktsize, rx_frag_size);
 692
 693         /* Copy the header portion into skb_data */
 694         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 695         memcpy(skb->data, start, hdr_len);
 696         skb->len = curr_frag_len;
 697         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 698                 /* Complete packet has now been moved to data */
 699                 put_page(page_info->page);
 700                 skb->data_len = 0;
 701                 skb->tail += curr_frag_len;
 702         } else {
 703                 skb_shinfo(skb)->nr_frags = 1;
 704                 skb_shinfo(skb)->frags[0].page = page_info->page;
 705                 skb_shinfo(skb)->frags[0].page_offset =
 706                                         page_info->page_offset + hdr_len;
 707                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 708                 skb->data_len = curr_frag_len - hdr_len;
 709                 skb->tail += hdr_len;
 710         }
 711         memset(page_info, 0, sizeof(*page_info));
 712
 713         if (pktsize <= rx_frag_size) {
 714                 BUG_ON(num_rcvd != 1);
 715                 return;
 716         }
 717
 718         /* More frags present for this completion */
 719         pktsize -= curr_frag_len; /* account for above copied frag */
 720         for (i = 1; i < num_rcvd; i++) {
 721                 index_inc(&rxq_idx, rxq->len);
 722                 page_info = get_rx_page_info(adapter, rxq_idx);
 723
 724                 curr_frag_len = min(pktsize, rx_frag_size);
 725
 726                 skb_shinfo(skb)->frags[i].page = page_info->page;
 727                 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
 728                 skb_shinfo(skb)->frags[i].size = curr_frag_len;
 729                 skb->len += curr_frag_len;
 730                 skb->data_len += curr_frag_len;
 731                 skb_shinfo(skb)->nr_frags++;
 732                 pktsize -= curr_frag_len;
 733
 734                 memset(page_info, 0, sizeof(*page_info));
 735         }
 736
 737         be_rx_stats_update(adapter, pktsize, num_rcvd);
 738         return;
 739 }
 740
 741 /* Process the RX completion indicated by rxcp when LRO is disabled */
 742 static void be_rx_compl_process(struct be_adapter *adapter,
 743                         struct be_eth_rx_compl *rxcp)
 744 {
 745         struct sk_buff *skb;
 746         u32 vtp, vid;
 747         int l4_cksm;
 748
 749         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 750         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 751
 752         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 753         if (!skb) {
 754                 if (net_ratelimit())
 755                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 756                 be_rx_compl_discard(adapter, rxcp);
 757                 return;
 758         }
 759
 760         skb_reserve(skb, NET_IP_ALIGN);
 761
 762         skb_fill_rx_data(adapter, skb, rxcp);
 763
 764         if (l4_cksm && adapter->rx_csum)
 765                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 766         else
 767                 skb->ip_summed = CHECKSUM_NONE;
 768
 769         skb->truesize = skb->len + sizeof(struct sk_buff);
 770         skb->protocol = eth_type_trans(skb, adapter->netdev);
 771         skb->dev = adapter->netdev;
 772
 773         if (vtp) {
 774                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 775                         kfree_skb(skb);
 776                         return;
 777                 }
 778                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 779                 vid = be16_to_cpu(vid);
 780                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 781         } else {
 782                 netif_receive_skb(skb);
 783         }
 784
 785         adapter->netdev->last_rx = jiffies;
 786
 787         return;
 788 }
 789
 790 /* Process the RX completion indicated by rxcp when LRO is enabled */
 791 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 792                         struct be_eth_rx_compl *rxcp)
 793 {
 794         struct be_rx_page_info *page_info;
 795         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 796         struct be_queue_info *rxq = &adapter->rx_obj.q;
 797         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 798         u16 i, rxq_idx = 0, vid;
 799
 800         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 801         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 802         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 803         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 804
 805         remaining = pkt_size;
 806         for (i = 0; i < num_rcvd; i++) {
 807                 page_info = get_rx_page_info(adapter, rxq_idx);
 808
 809                 curr_frag_len = min(remaining, rx_frag_size);
 810
 811                 rx_frags[i].page = page_info->page;
 812                 rx_frags[i].page_offset = page_info->page_offset;
 813                 rx_frags[i].size = curr_frag_len;
 814                 remaining -= curr_frag_len;
 815
 816                 index_inc(&rxq_idx, rxq->len);
 817
 818                 memset(page_info, 0, sizeof(*page_info));
 819         }
 820
 821         if (likely(!vlanf)) {
 822                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 823                                 pkt_size, NULL, 0);
 824         } else {
 825                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 826                 vid = be16_to_cpu(vid);
 827
 828                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 829                         return;
 830
 831                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 832                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 833                         vid, NULL, 0);
 834         }
 835
 836         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 837         return;
 838 }
 839
 840 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 841 {
 842         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 843
 844         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 845                 return NULL;
 846
 847         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 848
 849         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 850
 851         queue_tail_inc(&adapter->rx_obj.cq);
 852         return rxcp;
 853 }
 854
 855 static inline struct page *be_alloc_pages(u32 size)
 856 {
 857         gfp_t alloc_flags = GFP_ATOMIC;
 858         u32 order = get_order(size);
 859         if (order > 0)
 860                 alloc_flags |= __GFP_COMP;
 861         return  alloc_pages(alloc_flags, order);
 862 }
 863
 864 /*
 865  * Allocate a page, split it to fragments of size rx_frag_size and post as
 866  * receive buffers to BE
 867  */
 868 static void be_post_rx_frags(struct be_adapter *adapter)
 869 {
 870         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 871         struct be_rx_page_info *page_info = NULL;
 872         struct be_queue_info *rxq = &adapter->rx_obj.q;
 873         struct page *pagep = NULL;
 874         struct be_eth_rx_d *rxd;
 875         u64 page_dmaaddr = 0, frag_dmaaddr;
 876         u32 posted, page_offset = 0;
 877
 878         page_info = &page_info_tbl[rxq->head];
 879         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 880                 if (!pagep) {
 881                         pagep = be_alloc_pages(adapter->big_page_size);
 882                         if (unlikely(!pagep)) {
 883                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 884                                 break;
 885                         }
 886                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 887                                                 adapter->big_page_size,
 888                                                 PCI_DMA_FROMDEVICE);
 889                         page_info->page_offset = 0;
 890                 } else {
 891                         get_page(pagep);
 892                         page_info->page_offset = page_offset + rx_frag_size;
 893                 }
 894                 page_offset = page_info->page_offset;
 895                 page_info->page = pagep;
 896                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 897                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 898
 899                 rxd = queue_head_node(rxq);
 900                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 901                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 902                 queue_head_inc(rxq);
 903
 904                 /* Any space left in the current big page for another frag? */
 905                 if ((page_offset + rx_frag_size + rx_frag_size) >
 906                                         adapter->big_page_size) {
 907                         pagep = NULL;
 908                         page_info->last_page_user = true;
 909                 }
 910                 page_info = &page_info_tbl[rxq->head];
 911         }
 912         if (pagep)
 913                 page_info->last_page_user = true;
 914
 915         if (posted) {
 916                 atomic_add(posted, &rxq->used);
 917                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 918         } else if (atomic_read(&rxq->used) == 0) {
 919                 /* Let be_worker replenish when memory is available */
 920                 adapter->rx_post_starved = true;
 921         }
 922
 923         return;
 924 }
 925
 926 static struct be_eth_tx_compl *
 927 be_tx_compl_get(struct be_adapter *adapter)
 928 {
 929         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 930         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 931
 932         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 933                 return NULL;
 934
 935         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 936
 937         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 938
 939         queue_tail_inc(tx_cq);
 940         return txcp;
 941 }
 942
 943 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 944 {
 945         struct be_queue_info *txq = &adapter->tx_obj.q;
 946         struct be_eth_wrb *wrb;
 947         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 948         struct sk_buff *sent_skb;
 949         u64 busaddr;
 950         u16 cur_index, num_wrbs = 0;
 951
 952         cur_index = txq->tail;
 953         sent_skb = sent_skbs[cur_index];
 954         BUG_ON(!sent_skb);
 955         sent_skbs[cur_index] = NULL;
 956
 957         do {
 958                 cur_index = txq->tail;
 959                 wrb = queue_tail_node(txq);
 960                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 961                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 962                 if (busaddr != 0) {
 963                         pci_unmap_single(adapter->pdev, busaddr,
 964                                 wrb->frag_len, PCI_DMA_TODEVICE);
 965                 }
 966                 num_wrbs++;
 967                 queue_tail_inc(txq);
 968         } while (cur_index != last_index);
 969
 970         atomic_sub(num_wrbs, &txq->used);
 971
 972         kfree_skb(sent_skb);
 973 }
 974
 975 static void be_rx_q_clean(struct be_adapter *adapter)
 976 {
 977         struct be_rx_page_info *page_info;
 978         struct be_queue_info *rxq = &adapter->rx_obj.q;
 979         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
 980         struct be_eth_rx_compl *rxcp;
 981         u16 tail;
 982
 983         /* First cleanup pending rx completions */
 984         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
 985                 be_rx_compl_discard(adapter, rxcp);
 986                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
 987         }
 988
 989         /* Then free posted rx buffer that were not used */
 990         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
 991         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
 992                 page_info = get_rx_page_info(adapter, tail);
 993                 put_page(page_info->page);
 994                 memset(page_info, 0, sizeof(*page_info));
 995         }
 996         BUG_ON(atomic_read(&rxq->used));
 997 }
 998
 999 static void be_tx_q_clean(struct be_adapter *adapter)
1000 {
1001         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1002         struct sk_buff *sent_skb;
1003         struct be_queue_info *txq = &adapter->tx_obj.q;
1004         u16 last_index;
1005         bool dummy_wrb;
1006
1007         while (atomic_read(&txq->used)) {
1008                 sent_skb = sent_skbs[txq->tail];
1009                 last_index = txq->tail;
1010                 index_adv(&last_index,
1011                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1012                 be_tx_compl_process(adapter, last_index);
1013         }
1014 }
1015
1016 static void be_tx_queues_destroy(struct be_adapter *adapter)
1017 {
1018         struct be_queue_info *q;
1019
1020         q = &adapter->tx_obj.q;
1021         if (q->created)
1022                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1023         be_queue_free(adapter, q);
1024
1025         q = &adapter->tx_obj.cq;
1026         if (q->created)
1027                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1028         be_queue_free(adapter, q);
1029
1030         /* No more tx completions can be rcvd now; clean up if there are
1031          * any pending completions or pending tx requests */
1032         be_tx_q_clean(adapter);
1033
1034         q = &adapter->tx_eq.q;
1035         if (q->created)
1036                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1037         be_queue_free(adapter, q);
1038 }
1039
1040 static int be_tx_queues_create(struct be_adapter *adapter)
1041 {
1042         struct be_queue_info *eq, *q, *cq;
1043
1044         adapter->tx_eq.max_eqd = 0;
1045         adapter->tx_eq.min_eqd = 0;
1046         adapter->tx_eq.cur_eqd = 96;
1047         adapter->tx_eq.enable_aic = false;
1048         /* Alloc Tx Event queue */
1049         eq = &adapter->tx_eq.q;
1050         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1051                 return -1;
1052
1053         /* Ask BE to create Tx Event queue */
1054         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1055                 goto tx_eq_free;
1056         /* Alloc TX eth compl queue */
1057         cq = &adapter->tx_obj.cq;
1058         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1059                         sizeof(struct be_eth_tx_compl)))
1060                 goto tx_eq_destroy;
1061
1062         /* Ask BE to create Tx eth compl queue */
1063         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1064                 goto tx_cq_free;
1065
1066         /* Alloc TX eth queue */
1067         q = &adapter->tx_obj.q;
1068         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1069                 goto tx_cq_destroy;
1070
1071         /* Ask BE to create Tx eth queue */
1072         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1073                 goto tx_q_free;
1074         return 0;
1075
1076 tx_q_free:
1077         be_queue_free(adapter, q);
1078 tx_cq_destroy:
1079         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1080 tx_cq_free:
1081         be_queue_free(adapter, cq);
1082 tx_eq_destroy:
1083         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1084 tx_eq_free:
1085         be_queue_free(adapter, eq);
1086         return -1;
1087 }
1088
1089 static void be_rx_queues_destroy(struct be_adapter *adapter)
1090 {
1091         struct be_queue_info *q;
1092
1093         q = &adapter->rx_obj.q;
1094         if (q->created) {
1095                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1096                 be_rx_q_clean(adapter);
1097         }
1098         be_queue_free(adapter, q);
1099
1100         q = &adapter->rx_obj.cq;
1101         if (q->created)
1102                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1103         be_queue_free(adapter, q);
1104
1105         q = &adapter->rx_eq.q;
1106         if (q->created)
1107                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1108         be_queue_free(adapter, q);
1109 }
1110
1111 static int be_rx_queues_create(struct be_adapter *adapter)
1112 {
1113         struct be_queue_info *eq, *q, *cq;
1114         int rc;
1115
1116         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1117         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1118         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1119         adapter->rx_eq.min_eqd = 0;
1120         adapter->rx_eq.cur_eqd = 0;
1121         adapter->rx_eq.enable_aic = true;
1122
1123         /* Alloc Rx Event queue */
1124         eq = &adapter->rx_eq.q;
1125         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1126                                 sizeof(struct be_eq_entry));
1127         if (rc)
1128                 return rc;
1129
1130         /* Ask BE to create Rx Event queue */
1131         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1132         if (rc)
1133                 goto rx_eq_free;
1134
1135         /* Alloc RX eth compl queue */
1136         cq = &adapter->rx_obj.cq;
1137         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1138                         sizeof(struct be_eth_rx_compl));
1139         if (rc)
1140                 goto rx_eq_destroy;
1141
1142         /* Ask BE to create Rx eth compl queue */
1143         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1144         if (rc)
1145                 goto rx_cq_free;
1146
1147         /* Alloc RX eth queue */
1148         q = &adapter->rx_obj.q;
1149         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1150         if (rc)
1151                 goto rx_cq_destroy;
1152
1153         /* Ask BE to create Rx eth queue */
1154         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1155                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1156         if (rc)
1157                 goto rx_q_free;
1158
1159         return 0;
1160 rx_q_free:
1161         be_queue_free(adapter, q);
1162 rx_cq_destroy:
1163         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1164 rx_cq_free:
1165         be_queue_free(adapter, cq);
1166 rx_eq_destroy:
1167         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1168 rx_eq_free:
1169         be_queue_free(adapter, eq);
1170         return rc;
1171 }
1172 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1173 {
1174         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1175         u32 evt = entry->evt;
1176
1177         if (!evt)
1178                 return false;
1179
1180         evt = le32_to_cpu(evt);
1181         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1182         entry->evt = 0;
1183         queue_tail_inc(&eq_obj->q);
1184         return true;
1185 }
1186
1187 static int event_handle(struct be_ctrl_info *ctrl,
1188                         struct be_eq_obj *eq_obj)
1189 {
1190         u16 rid = 0, num = 0;
1191
1192         while (event_get(eq_obj, &rid))
1193                 num++;
1194
1195         /* We can see an interrupt and no event */
1196         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1197         if (num)
1198                 napi_schedule(&eq_obj->napi);
1199
1200         return num;
1201 }
1202
1203 static irqreturn_t be_intx(int irq, void *dev)
1204 {
1205         struct be_adapter *adapter = dev;
1206         struct be_ctrl_info *ctrl = &adapter->ctrl;
1207         int rx, tx;
1208
1209         tx = event_handle(ctrl, &adapter->tx_eq);
1210         rx = event_handle(ctrl, &adapter->rx_eq);
1211
1212         if (rx || tx)
1213                 return IRQ_HANDLED;
1214         else
1215                 return IRQ_NONE;
1216 }
1217
1218 static irqreturn_t be_msix_rx(int irq, void *dev)
1219 {
1220         struct be_adapter *adapter = dev;
1221
1222         event_handle(&adapter->ctrl, &adapter->rx_eq);
1223
1224         return IRQ_HANDLED;
1225 }
1226
1227 static irqreturn_t be_msix_tx(int irq, void *dev)
1228 {
1229         struct be_adapter *adapter = dev;
1230
1231         event_handle(&adapter->ctrl, &adapter->tx_eq);
1232
1233         return IRQ_HANDLED;
1234 }
1235
1236 static inline bool do_lro(struct be_adapter *adapter,
1237                         struct be_eth_rx_compl *rxcp)
1238 {
1239         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1240         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1241
1242         if (err)
1243                 drvr_stats(adapter)->be_rxcp_err++;
1244
1245         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1246                 false : true;
1247 }
1248
1249 int be_poll_rx(struct napi_struct *napi, int budget)
1250 {
1251         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1252         struct be_adapter *adapter =
1253                 container_of(rx_eq, struct be_adapter, rx_eq);
1254         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1255         struct be_eth_rx_compl *rxcp;
1256         u32 work_done;
1257
1258         for (work_done = 0; work_done < budget; work_done++) {
1259                 rxcp = be_rx_compl_get(adapter);
1260                 if (!rxcp)
1261                         break;
1262
1263                 if (do_lro(adapter, rxcp))
1264                         be_rx_compl_process_lro(adapter, rxcp);
1265                 else
1266                         be_rx_compl_process(adapter, rxcp);
1267         }
1268
1269         lro_flush_all(&adapter->rx_obj.lro_mgr);
1270
1271         /* Refill the queue */
1272         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1273                 be_post_rx_frags(adapter);
1274
1275         /* All consumed */
1276         if (work_done < budget) {
1277                 napi_complete(napi);
1278                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1279         } else {
1280                 /* More to be consumed; continue with interrupts disabled */
1281                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1282         }
1283         return work_done;
1284 }
1285
1286 /* For TX we don't honour budget; consume everything */
1287 int be_poll_tx(struct napi_struct *napi, int budget)
1288 {
1289         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1290         struct be_adapter *adapter =
1291                 container_of(tx_eq, struct be_adapter, tx_eq);
1292         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1293         struct be_queue_info *tx_cq = &tx_obj->cq;
1294         struct be_queue_info *txq = &tx_obj->q;
1295         struct be_eth_tx_compl *txcp;
1296         u32 num_cmpl = 0;
1297         u16 end_idx;
1298
1299         while ((txcp = be_tx_compl_get(adapter))) {
1300                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1301                                         wrb_index, txcp);
1302                 be_tx_compl_process(adapter, end_idx);
1303                 num_cmpl++;
1304         }
1305
1306         /* As Tx wrbs have been freed up, wake up netdev queue if
1307          * it was stopped due to lack of tx wrbs.
1308          */
1309         if (netif_queue_stopped(adapter->netdev) &&
1310                         atomic_read(&txq->used) < txq->len / 2) {
1311                 netif_wake_queue(adapter->netdev);
1312         }
1313
1314         napi_complete(napi);
1315
1316         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1317
1318         drvr_stats(adapter)->be_tx_events++;
1319         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1320
1321         return 1;
1322 }
1323
1324 static void be_worker(struct work_struct *work)
1325 {
1326         struct be_adapter *adapter =
1327                 container_of(work, struct be_adapter, work.work);
1328         int status;
1329
1330         /* Check link */
1331         be_link_status_update(adapter);
1332
1333         /* Get Stats */
1334         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1335         if (!status)
1336                 netdev_stats_update(adapter);
1337
1338         /* Set EQ delay */
1339         be_rx_eqd_update(adapter);
1340
1341         be_tx_rate_update(adapter);
1342         be_rx_rate_update(adapter);
1343
1344         if (adapter->rx_post_starved) {
1345                 adapter->rx_post_starved = false;
1346                 be_post_rx_frags(adapter);
1347         }
1348
1349         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1350 }
1351
1352 static void be_msix_enable(struct be_adapter *adapter)
1353 {
1354         int i, status;
1355
1356         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1357                 adapter->msix_entries[i].entry = i;
1358
1359         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1360                 BE_NUM_MSIX_VECTORS);
1361         if (status == 0)
1362                 adapter->msix_enabled = true;
1363         return;
1364 }
1365
1366 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1367 {
1368         return adapter->msix_entries[eq_id -
1369                         8 * adapter->ctrl.pci_func].vector;
1370 }
1371
1372 static int be_msix_register(struct be_adapter *adapter)
1373 {
1374         struct net_device *netdev = adapter->netdev;
1375         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1376         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1377         int status, vec;
1378
1379         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1380         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1381         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1382         if (status)
1383                 goto err;
1384
1385         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1386         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1387         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1388         if (status) { /* Free TX IRQ */
1389                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1390                 free_irq(vec, adapter);
1391                 goto err;
1392         }
1393         return 0;
1394 err:
1395         dev_warn(&adapter->pdev->dev,
1396                 "MSIX Request IRQ failed - err %d\n", status);
1397         pci_disable_msix(adapter->pdev);
1398         adapter->msix_enabled = false;
1399         return status;
1400 }
1401
1402 static int be_irq_register(struct be_adapter *adapter)
1403 {
1404         struct net_device *netdev = adapter->netdev;
1405         int status;
1406
1407         if (adapter->msix_enabled) {
1408                 status = be_msix_register(adapter);
1409                 if (status == 0)
1410                         goto done;
1411         }
1412
1413         /* INTx */
1414         netdev->irq = adapter->pdev->irq;
1415         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1416                         adapter);
1417         if (status) {
1418                 dev_err(&adapter->pdev->dev,
1419                         "INTx request IRQ failed - err %d\n", status);
1420                 return status;
1421         }
1422 done:
1423         adapter->isr_registered = true;
1424         return 0;
1425 }
1426
1427 static void be_irq_unregister(struct be_adapter *adapter)
1428 {
1429         struct net_device *netdev = adapter->netdev;
1430         int vec;
1431
1432         if (!adapter->isr_registered)
1433                 return;
1434
1435         /* INTx */
1436         if (!adapter->msix_enabled) {
1437                 free_irq(netdev->irq, adapter);
1438                 goto done;
1439         }
1440
1441         /* MSIx */
1442         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1443         free_irq(vec, adapter);
1444         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1445         free_irq(vec, adapter);
1446 done:
1447         adapter->isr_registered = false;
1448         return;
1449 }
1450
1451 static int be_open(struct net_device *netdev)
1452 {
1453         struct be_adapter *adapter = netdev_priv(netdev);
1454         struct be_ctrl_info *ctrl = &adapter->ctrl;
1455         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1456         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1457         u32 if_flags;
1458         int status;
1459
1460         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1461                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1462                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1463         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1464                         false/* pmac_invalid */, &adapter->if_handle,
1465                         &adapter->pmac_id);
1466         if (status != 0)
1467                 goto do_none;
1468
1469         be_vid_config(netdev);
1470
1471         status = be_cmd_set_flow_control(ctrl, true, true);
1472         if (status != 0)
1473                 goto if_destroy;
1474
1475         status = be_tx_queues_create(adapter);
1476         if (status != 0)
1477                 goto if_destroy;
1478
1479         status = be_rx_queues_create(adapter);
1480         if (status != 0)
1481                 goto tx_qs_destroy;
1482
1483         /* First time posting */
1484         be_post_rx_frags(adapter);
1485
1486         napi_enable(&rx_eq->napi);
1487         napi_enable(&tx_eq->napi);
1488
1489         be_irq_register(adapter);
1490
1491         be_intr_set(ctrl, true);
1492
1493         /* The evt queues are created in the unarmed state; arm them */
1494         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1495         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1496
1497         /* The compl queues are created in the unarmed state; arm them */
1498         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1499         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1500
1501         be_link_status_update(adapter);
1502
1503         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1504         return 0;
1505
1506 tx_qs_destroy:
1507         be_tx_queues_destroy(adapter);
1508 if_destroy:
1509         be_cmd_if_destroy(ctrl, adapter->if_handle);
1510 do_none:
1511         return status;
1512 }
1513
1514 static int be_close(struct net_device *netdev)
1515 {
1516         struct be_adapter *adapter = netdev_priv(netdev);
1517         struct be_ctrl_info *ctrl = &adapter->ctrl;
1518         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1519         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1520         int vec;
1521
1522         cancel_delayed_work(&adapter->work);
1523
1524         netif_stop_queue(netdev);
1525         netif_carrier_off(netdev);
1526         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1527
1528         be_intr_set(ctrl, false);
1529
1530         if (adapter->msix_enabled) {
1531                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1532                 synchronize_irq(vec);
1533                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1534                 synchronize_irq(vec);
1535         } else {
1536                 synchronize_irq(netdev->irq);
1537         }
1538         be_irq_unregister(adapter);
1539
1540         napi_disable(&rx_eq->napi);
1541         napi_disable(&tx_eq->napi);
1542
1543         be_rx_queues_destroy(adapter);
1544         be_tx_queues_destroy(adapter);
1545
1546         be_cmd_if_destroy(ctrl, adapter->if_handle);
1547         return 0;
1548 }
1549
1550 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1551                                 void **ip_hdr, void **tcpudp_hdr,
1552                                 u64 *hdr_flags, void *priv)
1553 {
1554         struct ethhdr *eh;
1555         struct vlan_ethhdr *veh;
1556         struct iphdr *iph;
1557         u8 *va = page_address(frag->page) + frag->page_offset;
1558         unsigned long ll_hlen;
1559
1560         prefetch(va);
1561         eh = (struct ethhdr *)va;
1562         *mac_hdr = eh;
1563         ll_hlen = ETH_HLEN;
1564         if (eh->h_proto != htons(ETH_P_IP)) {
1565                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1566                         veh = (struct vlan_ethhdr *)va;
1567                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1568                                 return -1;
1569
1570                         ll_hlen += VLAN_HLEN;
1571                 } else {
1572                         return -1;
1573                 }
1574         }
1575         *hdr_flags = LRO_IPV4;
1576         iph = (struct iphdr *)(va + ll_hlen);
1577         *ip_hdr = iph;
1578         if (iph->protocol != IPPROTO_TCP)
1579                 return -1;
1580         *hdr_flags |= LRO_TCP;
1581         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1582
1583         return 0;
1584 }
1585
1586 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1587 {
1588         struct net_lro_mgr *lro_mgr;
1589
1590         lro_mgr = &adapter->rx_obj.lro_mgr;
1591         lro_mgr->dev = netdev;
1592         lro_mgr->features = LRO_F_NAPI;
1593         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1594         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1595         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1596         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1597         lro_mgr->get_frag_header = be_get_frag_header;
1598         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1599 }
1600
1601 static struct net_device_ops be_netdev_ops = {
1602         .ndo_open               = be_open,
1603         .ndo_stop               = be_close,
1604         .ndo_start_xmit         = be_xmit,
1605         .ndo_get_stats          = be_get_stats,
1606         .ndo_set_rx_mode        = be_set_multicast_list,
1607         .ndo_set_mac_address    = be_mac_addr_set,
1608         .ndo_change_mtu         = be_change_mtu,
1609         .ndo_validate_addr      = eth_validate_addr,
1610         .ndo_vlan_rx_register   = be_vlan_register,
1611         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1612         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1613 };
1614
1615 static void be_netdev_init(struct net_device *netdev)
1616 {
1617         struct be_adapter *adapter = netdev_priv(netdev);
1618
1619         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1620                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1621                 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1622
1623         netdev->flags |= IFF_MULTICAST;
1624
1625         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1626
1627         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1628
1629         be_lro_init(adapter, netdev);
1630
1631         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1632                 BE_NAPI_WEIGHT);
1633         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1634                 BE_NAPI_WEIGHT);
1635
1636         netif_carrier_off(netdev);
1637         netif_stop_queue(netdev);
1638 }
1639
1640 static void be_unmap_pci_bars(struct be_adapter *adapter)
1641 {
1642         struct be_ctrl_info *ctrl = &adapter->ctrl;
1643         if (ctrl->csr)
1644                 iounmap(ctrl->csr);
1645         if (ctrl->db)
1646                 iounmap(ctrl->db);
1647         if (ctrl->pcicfg)
1648                 iounmap(ctrl->pcicfg);
1649 }
1650
1651 static int be_map_pci_bars(struct be_adapter *adapter)
1652 {
1653         u8 __iomem *addr;
1654
1655         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1656                         pci_resource_len(adapter->pdev, 2));
1657         if (addr == NULL)
1658                 return -ENOMEM;
1659         adapter->ctrl.csr = addr;
1660
1661         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1662                         128 * 1024);
1663         if (addr == NULL)
1664                 goto pci_map_err;
1665         adapter->ctrl.db = addr;
1666
1667         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1668                         pci_resource_len(adapter->pdev, 1));
1669         if (addr == NULL)
1670                 goto pci_map_err;
1671         adapter->ctrl.pcicfg = addr;
1672
1673         return 0;
1674 pci_map_err:
1675         be_unmap_pci_bars(adapter);
1676         return -ENOMEM;
1677 }
1678
1679
1680 static void be_ctrl_cleanup(struct be_adapter *adapter)
1681 {
1682         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1683
1684         be_unmap_pci_bars(adapter);
1685
1686         if (mem->va)
1687                 pci_free_consistent(adapter->pdev, mem->size,
1688                         mem->va, mem->dma);
1689 }
1690
1691 /* Initialize the mbox required to send cmds to BE */
1692 static int be_ctrl_init(struct be_adapter *adapter)
1693 {
1694         struct be_ctrl_info *ctrl = &adapter->ctrl;
1695         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1696         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1697         int status;
1698         u32 val;
1699
1700         status = be_map_pci_bars(adapter);
1701         if (status)
1702                 return status;
1703
1704         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1705         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1706                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1707         if (!mbox_mem_alloc->va) {
1708                 be_unmap_pci_bars(adapter);
1709                 return -1;
1710         }
1711         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1712         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1713         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1714         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1715         spin_lock_init(&ctrl->cmd_lock);
1716
1717         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1718         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1719                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1720         return 0;
1721 }
1722
1723 static void be_stats_cleanup(struct be_adapter *adapter)
1724 {
1725         struct be_stats_obj *stats = &adapter->stats;
1726         struct be_dma_mem *cmd = &stats->cmd;
1727
1728         if (cmd->va)
1729                 pci_free_consistent(adapter->pdev, cmd->size,
1730                         cmd->va, cmd->dma);
1731 }
1732
1733 static int be_stats_init(struct be_adapter *adapter)
1734 {
1735         struct be_stats_obj *stats = &adapter->stats;
1736         struct be_dma_mem *cmd = &stats->cmd;
1737
1738         cmd->size = sizeof(struct be_cmd_req_get_stats);
1739         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1740         if (cmd->va == NULL)
1741                 return -1;
1742         return 0;
1743 }
1744
1745 static void __devexit be_remove(struct pci_dev *pdev)
1746 {
1747         struct be_adapter *adapter = pci_get_drvdata(pdev);
1748         if (!adapter)
1749                 return;
1750
1751         unregister_netdev(adapter->netdev);
1752
1753         be_stats_cleanup(adapter);
1754
1755         be_ctrl_cleanup(adapter);
1756
1757         if (adapter->msix_enabled) {
1758                 pci_disable_msix(adapter->pdev);
1759                 adapter->msix_enabled = false;
1760         }
1761
1762         pci_set_drvdata(pdev, NULL);
1763         pci_release_regions(pdev);
1764         pci_disable_device(pdev);
1765
1766         free_netdev(adapter->netdev);
1767 }
1768
1769 static int be_hw_up(struct be_adapter *adapter)
1770 {
1771         struct be_ctrl_info *ctrl = &adapter->ctrl;
1772         int status;
1773
1774         status = be_cmd_POST(ctrl);
1775         if (status)
1776                 return status;
1777
1778         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1779         if (status)
1780                 return status;
1781
1782         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1783         return status;
1784 }
1785
1786 static int __devinit be_probe(struct pci_dev *pdev,
1787                         const struct pci_device_id *pdev_id)
1788 {
1789         int status = 0;
1790         struct be_adapter *adapter;
1791         struct net_device *netdev;
1792         struct be_ctrl_info *ctrl;
1793         u8 mac[ETH_ALEN];
1794
1795         status = pci_enable_device(pdev);
1796         if (status)
1797                 goto do_none;
1798
1799         status = pci_request_regions(pdev, DRV_NAME);
1800         if (status)
1801                 goto disable_dev;
1802         pci_set_master(pdev);
1803
1804         netdev = alloc_etherdev(sizeof(struct be_adapter));
1805         if (netdev == NULL) {
1806                 status = -ENOMEM;
1807                 goto rel_reg;
1808         }
1809         adapter = netdev_priv(netdev);
1810         adapter->pdev = pdev;
1811         pci_set_drvdata(pdev, adapter);
1812         adapter->netdev = netdev;
1813
1814         be_msix_enable(adapter);
1815
1816         status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1817         if (!status) {
1818                 netdev->features |= NETIF_F_HIGHDMA;
1819         } else {
1820                 status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1821                 if (status) {
1822                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1823                         goto free_netdev;
1824                 }
1825         }
1826
1827         ctrl = &adapter->ctrl;
1828         status = be_ctrl_init(adapter);
1829         if (status)
1830                 goto free_netdev;
1831
1832         status = be_stats_init(adapter);
1833         if (status)
1834                 goto ctrl_clean;
1835
1836         status = be_hw_up(adapter);
1837         if (status)
1838                 goto stats_clean;
1839
1840         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1841                         true /* permanent */, 0);
1842         if (status)
1843                 goto stats_clean;
1844         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1845
1846         INIT_DELAYED_WORK(&adapter->work, be_worker);
1847         be_netdev_init(netdev);
1848         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1849
1850         status = register_netdev(netdev);
1851         if (status != 0)
1852                 goto stats_clean;
1853
1854         dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
1855         return 0;
1856
1857 stats_clean:
1858         be_stats_cleanup(adapter);
1859 ctrl_clean:
1860         be_ctrl_cleanup(adapter);
1861 free_netdev:
1862         free_netdev(adapter->netdev);
1863 rel_reg:
1864         pci_release_regions(pdev);
1865 disable_dev:
1866         pci_disable_device(pdev);
1867 do_none:
1868         dev_warn(&pdev->dev, BE_NAME " initialization failed\n");
1869         return status;
1870 }
1871
1872 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1873 {
1874         struct be_adapter *adapter = pci_get_drvdata(pdev);
1875         struct net_device *netdev =  adapter->netdev;
1876
1877         netif_device_detach(netdev);
1878         if (netif_running(netdev)) {
1879                 rtnl_lock();
1880                 be_close(netdev);
1881                 rtnl_unlock();
1882         }
1883
1884         pci_save_state(pdev);
1885         pci_disable_device(pdev);
1886         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1887         return 0;
1888 }
1889
1890 static int be_resume(struct pci_dev *pdev)
1891 {
1892         int status = 0;
1893         struct be_adapter *adapter = pci_get_drvdata(pdev);
1894         struct net_device *netdev =  adapter->netdev;
1895
1896         netif_device_detach(netdev);
1897
1898         status = pci_enable_device(pdev);
1899         if (status)
1900                 return status;
1901
1902         pci_set_power_state(pdev, 0);
1903         pci_restore_state(pdev);
1904
1905         if (netif_running(netdev)) {
1906                 rtnl_lock();
1907                 be_open(netdev);
1908                 rtnl_unlock();
1909         }
1910         netif_device_attach(netdev);
1911         return 0;
1912 }
1913
1914 static struct pci_driver be_driver = {
1915         .name = DRV_NAME,
1916         .id_table = be_dev_ids,
1917         .probe = be_probe,
1918         .remove = be_remove,
1919         .suspend = be_suspend,
1920         .resume = be_resume
1921 };
1922
1923 static int __init be_init_module(void)
1924 {
1925         if (rx_frag_size != 8192 && rx_frag_size != 4096
1926                 && rx_frag_size != 2048) {
1927                 printk(KERN_WARNING DRV_NAME
1928                         " : Module param rx_frag_size must be 2048/4096/8192."
1929                         " Using 2048\n");
1930                 rx_frag_size = 2048;
1931         }
1932         /* Ensure rx_frag_size is aligned to chache line */
1933         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1934                 printk(KERN_WARNING DRV_NAME
1935                         " : Bad module param rx_frag_size. Using 2048\n");
1936                 rx_frag_size = 2048;
1937         }
1938
1939         return pci_register_driver(&be_driver);
1940 }
1941 module_init(be_init_module);
1942
1943 static void __exit be_exit_module(void)
1944 {
1945         pci_unregister_driver(&be_driver);
1946 }
1947 module_exit(be_exit_module);