SAFE public projects git trees. - safe/jmp/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 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  36         { 0 }
  37 };
  38 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  39
  40 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  41 {
  42         struct be_dma_mem *mem = &q->dma_mem;
  43         if (mem->va)
  44                 pci_free_consistent(adapter->pdev, mem->size,
  45                         mem->va, mem->dma);
  46 }
  47
  48 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  49                 u16 len, u16 entry_size)
  50 {
  51         struct be_dma_mem *mem = &q->dma_mem;
  52
  53         memset(q, 0, sizeof(*q));
  54         q->len = len;
  55         q->entry_size = entry_size;
  56         mem->size = len * entry_size;
  57         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  58         if (!mem->va)
  59                 return -1;
  60         memset(mem->va, 0, mem->size);
  61         return 0;
  62 }
  63
  64 static void be_intr_set(struct be_adapter *adapter, bool enable)
  65 {
  66         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  67         u32 reg = ioread32(addr);
  68         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  69
  70         if (!enabled && enable)
  71                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  72         else if (enabled && !enable)
  73                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  74         else
  75                 return;
  76
  77         iowrite32(reg, addr);
  78 }
  79
  80 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  81 {
  82         u32 val = 0;
  83         val |= qid & DB_RQ_RING_ID_MASK;
  84         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  85         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  86 }
  87
  88 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  89 {
  90         u32 val = 0;
  91         val |= qid & DB_TXULP_RING_ID_MASK;
  92         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  93         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  94 }
  95
  96 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  97                 bool arm, bool clear_int, u16 num_popped)
  98 {
  99         u32 val = 0;
 100         val |= qid & DB_EQ_RING_ID_MASK;
 101         if (arm)
 102                 val |= 1 << DB_EQ_REARM_SHIFT;
 103         if (clear_int)
 104                 val |= 1 << DB_EQ_CLR_SHIFT;
 105         val |= 1 << DB_EQ_EVNT_SHIFT;
 106         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 107         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 108 }
 109
 110 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 111 {
 112         u32 val = 0;
 113         val |= qid & DB_CQ_RING_ID_MASK;
 114         if (arm)
 115                 val |= 1 << DB_CQ_REARM_SHIFT;
 116         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 117         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 118 }
 119
 120
 121 static int be_mac_addr_set(struct net_device *netdev, void *p)
 122 {
 123         struct be_adapter *adapter = netdev_priv(netdev);
 124         struct sockaddr *addr = p;
 125         int status = 0;
 126
 127         if (netif_running(netdev)) {
 128                 status = be_cmd_pmac_del(adapter, adapter->if_handle,
 129                                 adapter->pmac_id);
 130                 if (status)
 131                         return status;
 132
 133                 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 134                                 adapter->if_handle, &adapter->pmac_id);
 135         }
 136
 137         if (!status)
 138                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 139
 140         return status;
 141 }
 142
 143 static void netdev_stats_update(struct be_adapter *adapter)
 144 {
 145         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 146         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 147         struct be_port_rxf_stats *port_stats =
 148                         &rxf_stats->port[adapter->port_num];
 149         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 150         struct be_erx_stats *erx_stats = &hw_stats->erx;
 151
 152         dev_stats->rx_packets = port_stats->rx_total_frames;
 153         dev_stats->tx_packets = port_stats->tx_unicastframes +
 154                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 155         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 156                                 (u64) port_stats->rx_bytes_lsd;
 157         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 158                                 (u64) port_stats->tx_bytes_lsd;
 159
 160         /* bad pkts received */
 161         dev_stats->rx_errors = port_stats->rx_crc_errors +
 162                 port_stats->rx_alignment_symbol_errors +
 163                 port_stats->rx_in_range_errors +
 164                 port_stats->rx_out_range_errors +
 165                 port_stats->rx_frame_too_long +
 166                 port_stats->rx_dropped_too_small +
 167                 port_stats->rx_dropped_too_short +
 168                 port_stats->rx_dropped_header_too_small +
 169                 port_stats->rx_dropped_tcp_length +
 170                 port_stats->rx_dropped_runt +
 171                 port_stats->rx_tcp_checksum_errs +
 172                 port_stats->rx_ip_checksum_errs +
 173                 port_stats->rx_udp_checksum_errs;
 174
 175         /*  no space in linux buffers: best possible approximation */
 176         dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
 177
 178         /* detailed rx errors */
 179         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 180                 port_stats->rx_out_range_errors +
 181                 port_stats->rx_frame_too_long;
 182
 183         /* receive ring buffer overflow */
 184         dev_stats->rx_over_errors = 0;
 185
 186         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 187
 188         /* frame alignment errors */
 189         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 190
 191         /* receiver fifo overrun */
 192         /* drops_no_pbuf is no per i/f, it's per BE card */
 193         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 194                                         port_stats->rx_input_fifo_overflow +
 195                                         rxf_stats->rx_drops_no_pbuf;
 196         /* receiver missed packetd */
 197         dev_stats->rx_missed_errors = 0;
 198
 199         /*  packet transmit problems */
 200         dev_stats->tx_errors = 0;
 201
 202         /* no space available in linux */
 203         dev_stats->tx_dropped = 0;
 204
 205         dev_stats->multicast = port_stats->tx_multicastframes;
 206         dev_stats->collisions = 0;
 207
 208         /* detailed tx_errors */
 209         dev_stats->tx_aborted_errors = 0;
 210         dev_stats->tx_carrier_errors = 0;
 211         dev_stats->tx_fifo_errors = 0;
 212         dev_stats->tx_heartbeat_errors = 0;
 213         dev_stats->tx_window_errors = 0;
 214 }
 215
 216 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 217 {
 218         struct net_device *netdev = adapter->netdev;
 219
 220         /* If link came up or went down */
 221         if (adapter->link_up != link_up) {
 222                 if (link_up) {
 223                         netif_start_queue(netdev);
 224                         netif_carrier_on(netdev);
 225                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 226                 } else {
 227                         netif_stop_queue(netdev);
 228                         netif_carrier_off(netdev);
 229                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 230                 }
 231                 adapter->link_up = link_up;
 232         }
 233 }
 234
 235 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 236 static void be_rx_eqd_update(struct be_adapter *adapter)
 237 {
 238         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 239         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 240         ulong now = jiffies;
 241         u32 eqd;
 242
 243         if (!rx_eq->enable_aic)
 244                 return;
 245
 246         /* Wrapped around */
 247         if (time_before(now, stats->rx_fps_jiffies)) {
 248                 stats->rx_fps_jiffies = now;
 249                 return;
 250         }
 251
 252         /* Update once a second */
 253         if ((now - stats->rx_fps_jiffies) < HZ)
 254                 return;
 255
 256         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 257                         ((now - stats->rx_fps_jiffies) / HZ);
 258
 259         stats->rx_fps_jiffies = now;
 260         stats->be_prev_rx_frags = stats->be_rx_frags;
 261         eqd = stats->be_rx_fps / 110000;
 262         eqd = eqd << 3;
 263         if (eqd > rx_eq->max_eqd)
 264                 eqd = rx_eq->max_eqd;
 265         if (eqd < rx_eq->min_eqd)
 266                 eqd = rx_eq->min_eqd;
 267         if (eqd < 10)
 268                 eqd = 0;
 269         if (eqd != rx_eq->cur_eqd)
 270                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 271
 272         rx_eq->cur_eqd = eqd;
 273 }
 274
 275 static struct net_device_stats *be_get_stats(struct net_device *dev)
 276 {
 277         struct be_adapter *adapter = netdev_priv(dev);
 278
 279         return &adapter->stats.net_stats;
 280 }
 281
 282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 283 {
 284         u64 rate = bytes;
 285
 286         do_div(rate, ticks / HZ);
 287         rate <<= 3;                     /* bytes/sec -> bits/sec */
 288         do_div(rate, 1000000ul);        /* MB/Sec */
 289
 290         return rate;
 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                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 307                                                   - stats->be_tx_bytes_prev,
 308                                                  now - stats->be_tx_jiffies);
 309                 stats->be_tx_jiffies = now;
 310                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 311         }
 312 }
 313
 314 static void be_tx_stats_update(struct be_adapter *adapter,
 315                         u32 wrb_cnt, u32 copied, bool stopped)
 316 {
 317         struct be_drvr_stats *stats = drvr_stats(adapter);
 318         stats->be_tx_reqs++;
 319         stats->be_tx_wrbs += wrb_cnt;
 320         stats->be_tx_bytes += copied;
 321         if (stopped)
 322                 stats->be_tx_stops++;
 323 }
 324
 325 /* Determine number of WRB entries needed to xmit data in an skb */
 326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 327 {
 328         int cnt = (skb->len > skb->data_len);
 329
 330         cnt += skb_shinfo(skb)->nr_frags;
 331
 332         /* to account for hdr wrb */
 333         cnt++;
 334         if (cnt & 1) {
 335                 /* add a dummy to make it an even num */
 336                 cnt++;
 337                 *dummy = true;
 338         } else
 339                 *dummy = false;
 340         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 341         return cnt;
 342 }
 343
 344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 345 {
 346         wrb->frag_pa_hi = upper_32_bits(addr);
 347         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 348         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 349 }
 350
 351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 352                 bool vlan, u32 wrb_cnt, u32 len)
 353 {
 354         memset(hdr, 0, sizeof(*hdr));
 355
 356         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 357
 358         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 359                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 360                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 361                         hdr, skb_shinfo(skb)->gso_size);
 362         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 363                 if (is_tcp_pkt(skb))
 364                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 365                 else if (is_udp_pkt(skb))
 366                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 367         }
 368
 369         if (vlan && vlan_tx_tag_present(skb)) {
 370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 371                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 372                         hdr, vlan_tx_tag_get(skb));
 373         }
 374
 375         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 376         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 377         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 378         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 379 }
 380
 381
 382 static int make_tx_wrbs(struct be_adapter *adapter,
 383                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 384 {
 385         u64 busaddr;
 386         u32 i, copied = 0;
 387         struct pci_dev *pdev = adapter->pdev;
 388         struct sk_buff *first_skb = skb;
 389         struct be_queue_info *txq = &adapter->tx_obj.q;
 390         struct be_eth_wrb *wrb;
 391         struct be_eth_hdr_wrb *hdr;
 392
 393         atomic_add(wrb_cnt, &txq->used);
 394         hdr = queue_head_node(txq);
 395         queue_head_inc(txq);
 396
 397         if (skb->len > skb->data_len) {
 398                 int len = skb->len - skb->data_len;
 399                 busaddr = pci_map_single(pdev, skb->data, len,
 400                                          PCI_DMA_TODEVICE);
 401                 wrb = queue_head_node(txq);
 402                 wrb_fill(wrb, busaddr, len);
 403                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 404                 queue_head_inc(txq);
 405                 copied += len;
 406         }
 407
 408         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 409                 struct skb_frag_struct *frag =
 410                         &skb_shinfo(skb)->frags[i];
 411                 busaddr = pci_map_page(pdev, frag->page,
 412                                         frag->page_offset,
 413                                         frag->size, PCI_DMA_TODEVICE);
 414                 wrb = queue_head_node(txq);
 415                 wrb_fill(wrb, busaddr, frag->size);
 416                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 417                 queue_head_inc(txq);
 418                 copied += frag->size;
 419         }
 420
 421         if (dummy_wrb) {
 422                 wrb = queue_head_node(txq);
 423                 wrb_fill(wrb, 0, 0);
 424                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 425                 queue_head_inc(txq);
 426         }
 427
 428         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 429                 wrb_cnt, copied);
 430         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 431
 432         return copied;
 433 }
 434
 435 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 436 {
 437         struct be_adapter *adapter = netdev_priv(netdev);
 438         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 439         struct be_queue_info *txq = &tx_obj->q;
 440         u32 wrb_cnt = 0, copied = 0;
 441         u32 start = txq->head;
 442         bool dummy_wrb, stopped = false;
 443
 444         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 445
 446         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 447
 448         /* record the sent skb in the sent_skb table */
 449         BUG_ON(tx_obj->sent_skb_list[start]);
 450         tx_obj->sent_skb_list[start] = skb;
 451
 452         /* Ensure that txq has space for the next skb; Else stop the queue
 453          * *BEFORE* ringing the tx doorbell, so that we serialze the
 454          * tx compls of the current transmit which'll wake up the queue
 455          */
 456         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 457                 netif_stop_queue(netdev);
 458                 stopped = true;
 459         }
 460
 461         be_txq_notify(adapter, txq->id, wrb_cnt);
 462
 463         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 464         return NETDEV_TX_OK;
 465 }
 466
 467 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 468 {
 469         struct be_adapter *adapter = netdev_priv(netdev);
 470         if (new_mtu < BE_MIN_MTU ||
 471                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 472                 dev_info(&adapter->pdev->dev,
 473                         "MTU must be between %d and %d bytes\n",
 474                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 475                 return -EINVAL;
 476         }
 477         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 478                         netdev->mtu, new_mtu);
 479         netdev->mtu = new_mtu;
 480         return 0;
 481 }
 482
 483 /*
 484  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 485  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 486  * set the BE in promiscuous VLAN mode.
 487  */
 488 static void be_vid_config(struct net_device *netdev)
 489 {
 490         struct be_adapter *adapter = netdev_priv(netdev);
 491         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 492         u16 ntags = 0, i;
 493
 494         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 495                 /* Construct VLAN Table to give to HW */
 496                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 497                         if (adapter->vlan_tag[i]) {
 498                                 vtag[ntags] = cpu_to_le16(i);
 499                                 ntags++;
 500                         }
 501                 }
 502                 be_cmd_vlan_config(adapter, adapter->if_handle,
 503                         vtag, ntags, 1, 0);
 504         } else {
 505                 be_cmd_vlan_config(adapter, adapter->if_handle,
 506                         NULL, 0, 1, 1);
 507         }
 508 }
 509
 510 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 511 {
 512         struct be_adapter *adapter = netdev_priv(netdev);
 513         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 514         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 515
 516         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 517         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 518         adapter->vlan_grp = grp;
 519         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 520         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 521 }
 522
 523 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 524 {
 525         struct be_adapter *adapter = netdev_priv(netdev);
 526
 527         adapter->num_vlans++;
 528         adapter->vlan_tag[vid] = 1;
 529
 530         be_vid_config(netdev);
 531 }
 532
 533 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 534 {
 535         struct be_adapter *adapter = netdev_priv(netdev);
 536
 537         adapter->num_vlans--;
 538         adapter->vlan_tag[vid] = 0;
 539
 540         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 541         be_vid_config(netdev);
 542 }
 543
 544 static void be_set_multicast_list(struct net_device *netdev)
 545 {
 546         struct be_adapter *adapter = netdev_priv(netdev);
 547
 548         if (netdev->flags & IFF_PROMISC) {
 549                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 550                 adapter->promiscuous = true;
 551                 goto done;
 552         }
 553
 554         /* BE was previously in promiscous mode; disable it */
 555         if (adapter->promiscuous) {
 556                 adapter->promiscuous = false;
 557                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 558         }
 559
 560         if (netdev->flags & IFF_ALLMULTI) {
 561                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
 562                 goto done;
 563         }
 564
 565         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 566                 netdev->mc_count);
 567 done:
 568         return;
 569 }
 570
 571 static void be_rx_rate_update(struct be_adapter *adapter)
 572 {
 573         struct be_drvr_stats *stats = drvr_stats(adapter);
 574         ulong now = jiffies;
 575
 576         /* Wrapped around */
 577         if (time_before(now, stats->be_rx_jiffies)) {
 578                 stats->be_rx_jiffies = now;
 579                 return;
 580         }
 581
 582         /* Update the rate once in two seconds */
 583         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 584                 return;
 585
 586         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 587                                           - stats->be_rx_bytes_prev,
 588                                          now - stats->be_rx_jiffies);
 589         stats->be_rx_jiffies = now;
 590         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 591 }
 592
 593 static void be_rx_stats_update(struct be_adapter *adapter,
 594                 u32 pktsize, u16 numfrags)
 595 {
 596         struct be_drvr_stats *stats = drvr_stats(adapter);
 597
 598         stats->be_rx_compl++;
 599         stats->be_rx_frags += numfrags;
 600         stats->be_rx_bytes += pktsize;
 601 }
 602
 603 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 604 {
 605         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 606
 607         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 608         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 609         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 610         if (ip_version) {
 611                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 612                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 613         }
 614         ipv6_chk = (ip_version && (tcpf || udpf));
 615
 616         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 617 }
 618
 619 static struct be_rx_page_info *
 620 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 621 {
 622         struct be_rx_page_info *rx_page_info;
 623         struct be_queue_info *rxq = &adapter->rx_obj.q;
 624
 625         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 626         BUG_ON(!rx_page_info->page);
 627
 628         if (rx_page_info->last_page_user)
 629                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 630                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 631
 632         atomic_dec(&rxq->used);
 633         return rx_page_info;
 634 }
 635
 636 /* Throwaway the data in the Rx completion */
 637 static void be_rx_compl_discard(struct be_adapter *adapter,
 638                         struct be_eth_rx_compl *rxcp)
 639 {
 640         struct be_queue_info *rxq = &adapter->rx_obj.q;
 641         struct be_rx_page_info *page_info;
 642         u16 rxq_idx, i, num_rcvd;
 643
 644         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 645         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 646
 647         for (i = 0; i < num_rcvd; i++) {
 648                 page_info = get_rx_page_info(adapter, rxq_idx);
 649                 put_page(page_info->page);
 650                 memset(page_info, 0, sizeof(*page_info));
 651                 index_inc(&rxq_idx, rxq->len);
 652         }
 653 }
 654
 655 /*
 656  * skb_fill_rx_data forms a complete skb for an ether frame
 657  * indicated by rxcp.
 658  */
 659 static void skb_fill_rx_data(struct be_adapter *adapter,
 660                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 661 {
 662         struct be_queue_info *rxq = &adapter->rx_obj.q;
 663         struct be_rx_page_info *page_info;
 664         u16 rxq_idx, i, num_rcvd, j;
 665         u32 pktsize, hdr_len, curr_frag_len, size;
 666         u8 *start;
 667
 668         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 669         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 670         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 671
 672         page_info = get_rx_page_info(adapter, rxq_idx);
 673
 674         start = page_address(page_info->page) + page_info->page_offset;
 675         prefetch(start);
 676
 677         /* Copy data in the first descriptor of this completion */
 678         curr_frag_len = min(pktsize, rx_frag_size);
 679
 680         /* Copy the header portion into skb_data */
 681         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 682         memcpy(skb->data, start, hdr_len);
 683         skb->len = curr_frag_len;
 684         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 685                 /* Complete packet has now been moved to data */
 686                 put_page(page_info->page);
 687                 skb->data_len = 0;
 688                 skb->tail += curr_frag_len;
 689         } else {
 690                 skb_shinfo(skb)->nr_frags = 1;
 691                 skb_shinfo(skb)->frags[0].page = page_info->page;
 692                 skb_shinfo(skb)->frags[0].page_offset =
 693                                         page_info->page_offset + hdr_len;
 694                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 695                 skb->data_len = curr_frag_len - hdr_len;
 696                 skb->tail += hdr_len;
 697         }
 698         memset(page_info, 0, sizeof(*page_info));
 699
 700         if (pktsize <= rx_frag_size) {
 701                 BUG_ON(num_rcvd != 1);
 702                 goto done;
 703         }
 704
 705         /* More frags present for this completion */
 706         size = pktsize;
 707         for (i = 1, j = 0; i < num_rcvd; i++) {
 708                 size -= curr_frag_len;
 709                 index_inc(&rxq_idx, rxq->len);
 710                 page_info = get_rx_page_info(adapter, rxq_idx);
 711
 712                 curr_frag_len = min(size, rx_frag_size);
 713
 714                 /* Coalesce all frags from the same physical page in one slot */
 715                 if (page_info->page_offset == 0) {
 716                         /* Fresh page */
 717                         j++;
 718                         skb_shinfo(skb)->frags[j].page = page_info->page;
 719                         skb_shinfo(skb)->frags[j].page_offset =
 720                                                         page_info->page_offset;
 721                         skb_shinfo(skb)->frags[j].size = 0;
 722                         skb_shinfo(skb)->nr_frags++;
 723                 } else {
 724                         put_page(page_info->page);
 725                 }
 726
 727                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 728                 skb->len += curr_frag_len;
 729                 skb->data_len += curr_frag_len;
 730
 731                 memset(page_info, 0, sizeof(*page_info));
 732         }
 733         BUG_ON(j > MAX_SKB_FRAGS);
 734
 735 done:
 736         be_rx_stats_update(adapter, pktsize, num_rcvd);
 737         return;
 738 }
 739
 740 /* Process the RX completion indicated by rxcp when GRO is disabled */
 741 static void be_rx_compl_process(struct be_adapter *adapter,
 742                         struct be_eth_rx_compl *rxcp)
 743 {
 744         struct sk_buff *skb;
 745         u32 vtp, vid;
 746
 747         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 748
 749         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 750         if (!skb) {
 751                 if (net_ratelimit())
 752                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 753                 be_rx_compl_discard(adapter, rxcp);
 754                 return;
 755         }
 756
 757         skb_reserve(skb, NET_IP_ALIGN);
 758
 759         skb_fill_rx_data(adapter, skb, rxcp);
 760
 761         if (do_pkt_csum(rxcp, adapter->rx_csum))
 762                 skb->ip_summed = CHECKSUM_NONE;
 763         else
 764                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 765
 766         skb->truesize = skb->len + sizeof(struct sk_buff);
 767         skb->protocol = eth_type_trans(skb, adapter->netdev);
 768         skb->dev = adapter->netdev;
 769
 770         if (vtp) {
 771                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 772                         kfree_skb(skb);
 773                         return;
 774                 }
 775                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 776                 vid = be16_to_cpu(vid);
 777                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 778         } else {
 779                 netif_receive_skb(skb);
 780         }
 781
 782         adapter->netdev->last_rx = jiffies;
 783
 784         return;
 785 }
 786
 787 /* Process the RX completion indicated by rxcp when GRO is enabled */
 788 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 789                         struct be_eth_rx_compl *rxcp)
 790 {
 791         struct be_rx_page_info *page_info;
 792         struct sk_buff *skb = NULL;
 793         struct be_queue_info *rxq = &adapter->rx_obj.q;
 794         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 795         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 796         u16 i, rxq_idx = 0, vid, j;
 797
 798         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 799         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 800         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 801         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 802
 803         skb = napi_get_frags(&eq_obj->napi);
 804         if (!skb) {
 805                 be_rx_compl_discard(adapter, rxcp);
 806                 return;
 807         }
 808
 809         remaining = pkt_size;
 810         for (i = 0, j = -1; i < num_rcvd; i++) {
 811                 page_info = get_rx_page_info(adapter, rxq_idx);
 812
 813                 curr_frag_len = min(remaining, rx_frag_size);
 814
 815                 /* Coalesce all frags from the same physical page in one slot */
 816                 if (i == 0 || page_info->page_offset == 0) {
 817                         /* First frag or Fresh page */
 818                         j++;
 819                         skb_shinfo(skb)->frags[j].page = page_info->page;
 820                         skb_shinfo(skb)->frags[j].page_offset =
 821                                                         page_info->page_offset;
 822                         skb_shinfo(skb)->frags[j].size = 0;
 823                 } else {
 824                         put_page(page_info->page);
 825                 }
 826                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 827
 828                 remaining -= curr_frag_len;
 829                 index_inc(&rxq_idx, rxq->len);
 830                 memset(page_info, 0, sizeof(*page_info));
 831         }
 832         BUG_ON(j > MAX_SKB_FRAGS);
 833
 834         skb_shinfo(skb)->nr_frags = j + 1;
 835         skb->len = pkt_size;
 836         skb->data_len = pkt_size;
 837         skb->truesize += pkt_size;
 838         skb->ip_summed = CHECKSUM_UNNECESSARY;
 839
 840         if (likely(!vlanf)) {
 841                 napi_gro_frags(&eq_obj->napi);
 842         } else {
 843                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 844                 vid = be16_to_cpu(vid);
 845
 846                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 847                         return;
 848
 849                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 850         }
 851
 852         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 853         return;
 854 }
 855
 856 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 857 {
 858         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 859
 860         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 861                 return NULL;
 862
 863         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 864
 865         queue_tail_inc(&adapter->rx_obj.cq);
 866         return rxcp;
 867 }
 868
 869 /* To reset the valid bit, we need to reset the whole word as
 870  * when walking the queue the valid entries are little-endian
 871  * and invalid entries are host endian
 872  */
 873 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 874 {
 875         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 876 }
 877
 878 static inline struct page *be_alloc_pages(u32 size)
 879 {
 880         gfp_t alloc_flags = GFP_ATOMIC;
 881         u32 order = get_order(size);
 882         if (order > 0)
 883                 alloc_flags |= __GFP_COMP;
 884         return  alloc_pages(alloc_flags, order);
 885 }
 886
 887 /*
 888  * Allocate a page, split it to fragments of size rx_frag_size and post as
 889  * receive buffers to BE
 890  */
 891 static void be_post_rx_frags(struct be_adapter *adapter)
 892 {
 893         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 894         struct be_rx_page_info *page_info = NULL;
 895         struct be_queue_info *rxq = &adapter->rx_obj.q;
 896         struct page *pagep = NULL;
 897         struct be_eth_rx_d *rxd;
 898         u64 page_dmaaddr = 0, frag_dmaaddr;
 899         u32 posted, page_offset = 0;
 900
 901         page_info = &page_info_tbl[rxq->head];
 902         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 903                 if (!pagep) {
 904                         pagep = be_alloc_pages(adapter->big_page_size);
 905                         if (unlikely(!pagep)) {
 906                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 907                                 break;
 908                         }
 909                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 910                                                 adapter->big_page_size,
 911                                                 PCI_DMA_FROMDEVICE);
 912                         page_info->page_offset = 0;
 913                 } else {
 914                         get_page(pagep);
 915                         page_info->page_offset = page_offset + rx_frag_size;
 916                 }
 917                 page_offset = page_info->page_offset;
 918                 page_info->page = pagep;
 919                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 920                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 921
 922                 rxd = queue_head_node(rxq);
 923                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 924                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 925                 queue_head_inc(rxq);
 926
 927                 /* Any space left in the current big page for another frag? */
 928                 if ((page_offset + rx_frag_size + rx_frag_size) >
 929                                         adapter->big_page_size) {
 930                         pagep = NULL;
 931                         page_info->last_page_user = true;
 932                 }
 933                 page_info = &page_info_tbl[rxq->head];
 934         }
 935         if (pagep)
 936                 page_info->last_page_user = true;
 937
 938         if (posted) {
 939                 atomic_add(posted, &rxq->used);
 940                 be_rxq_notify(adapter, rxq->id, posted);
 941         } else if (atomic_read(&rxq->used) == 0) {
 942                 /* Let be_worker replenish when memory is available */
 943                 adapter->rx_post_starved = true;
 944         }
 945
 946         return;
 947 }
 948
 949 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 950 {
 951         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 952
 953         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 954                 return NULL;
 955
 956         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 957
 958         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 959
 960         queue_tail_inc(tx_cq);
 961         return txcp;
 962 }
 963
 964 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 965 {
 966         struct be_queue_info *txq = &adapter->tx_obj.q;
 967         struct be_eth_wrb *wrb;
 968         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 969         struct sk_buff *sent_skb;
 970         u64 busaddr;
 971         u16 cur_index, num_wrbs = 0;
 972
 973         cur_index = txq->tail;
 974         sent_skb = sent_skbs[cur_index];
 975         BUG_ON(!sent_skb);
 976         sent_skbs[cur_index] = NULL;
 977
 978         do {
 979                 cur_index = txq->tail;
 980                 wrb = queue_tail_node(txq);
 981                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 982                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 983                 if (busaddr != 0) {
 984                         pci_unmap_single(adapter->pdev, busaddr,
 985                                 wrb->frag_len, PCI_DMA_TODEVICE);
 986                 }
 987                 num_wrbs++;
 988                 queue_tail_inc(txq);
 989         } while (cur_index != last_index);
 990
 991         atomic_sub(num_wrbs, &txq->used);
 992
 993         kfree_skb(sent_skb);
 994 }
 995
 996 static void be_rx_q_clean(struct be_adapter *adapter)
 997 {
 998         struct be_rx_page_info *page_info;
 999         struct be_queue_info *rxq = &adapter->rx_obj.q;
1000         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1001         struct be_eth_rx_compl *rxcp;
1002         u16 tail;
1003
1004         /* First cleanup pending rx completions */
1005         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1006                 be_rx_compl_discard(adapter, rxcp);
1007                 be_rx_compl_reset(rxcp);
1008                 be_cq_notify(adapter, rx_cq->id, true, 1);
1009         }
1010
1011         /* Then free posted rx buffer that were not used */
1012         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1013         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1014                 page_info = get_rx_page_info(adapter, tail);
1015                 put_page(page_info->page);
1016                 memset(page_info, 0, sizeof(*page_info));
1017         }
1018         BUG_ON(atomic_read(&rxq->used));
1019 }
1020
1021 static void be_tx_q_clean(struct be_adapter *adapter)
1022 {
1023         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1024         struct sk_buff *sent_skb;
1025         struct be_queue_info *txq = &adapter->tx_obj.q;
1026         u16 last_index;
1027         bool dummy_wrb;
1028
1029         while (atomic_read(&txq->used)) {
1030                 sent_skb = sent_skbs[txq->tail];
1031                 last_index = txq->tail;
1032                 index_adv(&last_index,
1033                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1034                 be_tx_compl_process(adapter, last_index);
1035         }
1036 }
1037
1038 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1039 {
1040         struct be_queue_info *q;
1041
1042         q = &adapter->mcc_obj.q;
1043         if (q->created)
1044                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1045         be_queue_free(adapter, q);
1046
1047         q = &adapter->mcc_obj.cq;
1048         if (q->created)
1049                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1050         be_queue_free(adapter, q);
1051 }
1052
1053 /* Must be called only after TX qs are created as MCC shares TX EQ */
1054 static int be_mcc_queues_create(struct be_adapter *adapter)
1055 {
1056         struct be_queue_info *q, *cq;
1057
1058         /* Alloc MCC compl queue */
1059         cq = &adapter->mcc_obj.cq;
1060         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1061                         sizeof(struct be_mcc_compl)))
1062                 goto err;
1063
1064         /* Ask BE to create MCC compl queue; share TX's eq */
1065         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1066                 goto mcc_cq_free;
1067
1068         /* Alloc MCC queue */
1069         q = &adapter->mcc_obj.q;
1070         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1071                 goto mcc_cq_destroy;
1072
1073         /* Ask BE to create MCC queue */
1074         if (be_cmd_mccq_create(adapter, q, cq))
1075                 goto mcc_q_free;
1076
1077         return 0;
1078
1079 mcc_q_free:
1080         be_queue_free(adapter, q);
1081 mcc_cq_destroy:
1082         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1083 mcc_cq_free:
1084         be_queue_free(adapter, cq);
1085 err:
1086         return -1;
1087 }
1088
1089 static void be_tx_queues_destroy(struct be_adapter *adapter)
1090 {
1091         struct be_queue_info *q;
1092
1093         q = &adapter->tx_obj.q;
1094         if (q->created) {
1095                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1096
1097                 /* No more tx completions can be rcvd now; clean up if there
1098                  * are any pending completions or pending tx requests */
1099                 be_tx_q_clean(adapter);
1100         }
1101         be_queue_free(adapter, q);
1102
1103         q = &adapter->tx_obj.cq;
1104         if (q->created)
1105                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1106         be_queue_free(adapter, q);
1107
1108         q = &adapter->tx_eq.q;
1109         if (q->created)
1110                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1111         be_queue_free(adapter, q);
1112 }
1113
1114 static int be_tx_queues_create(struct be_adapter *adapter)
1115 {
1116         struct be_queue_info *eq, *q, *cq;
1117
1118         adapter->tx_eq.max_eqd = 0;
1119         adapter->tx_eq.min_eqd = 0;
1120         adapter->tx_eq.cur_eqd = 96;
1121         adapter->tx_eq.enable_aic = false;
1122         /* Alloc Tx Event queue */
1123         eq = &adapter->tx_eq.q;
1124         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1125                 return -1;
1126
1127         /* Ask BE to create Tx Event queue */
1128         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1129                 goto tx_eq_free;
1130         /* Alloc TX eth compl queue */
1131         cq = &adapter->tx_obj.cq;
1132         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1133                         sizeof(struct be_eth_tx_compl)))
1134                 goto tx_eq_destroy;
1135
1136         /* Ask BE to create Tx eth compl queue */
1137         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1138                 goto tx_cq_free;
1139
1140         /* Alloc TX eth queue */
1141         q = &adapter->tx_obj.q;
1142         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1143                 goto tx_cq_destroy;
1144
1145         /* Ask BE to create Tx eth queue */
1146         if (be_cmd_txq_create(adapter, q, cq))
1147                 goto tx_q_free;
1148         return 0;
1149
1150 tx_q_free:
1151         be_queue_free(adapter, q);
1152 tx_cq_destroy:
1153         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1154 tx_cq_free:
1155         be_queue_free(adapter, cq);
1156 tx_eq_destroy:
1157         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1158 tx_eq_free:
1159         be_queue_free(adapter, eq);
1160         return -1;
1161 }
1162
1163 static void be_rx_queues_destroy(struct be_adapter *adapter)
1164 {
1165         struct be_queue_info *q;
1166
1167         q = &adapter->rx_obj.q;
1168         if (q->created) {
1169                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1170                 be_rx_q_clean(adapter);
1171         }
1172         be_queue_free(adapter, q);
1173
1174         q = &adapter->rx_obj.cq;
1175         if (q->created)
1176                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1177         be_queue_free(adapter, q);
1178
1179         q = &adapter->rx_eq.q;
1180         if (q->created)
1181                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1182         be_queue_free(adapter, q);
1183 }
1184
1185 static int be_rx_queues_create(struct be_adapter *adapter)
1186 {
1187         struct be_queue_info *eq, *q, *cq;
1188         int rc;
1189
1190         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1191         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1192         adapter->rx_eq.min_eqd = 0;
1193         adapter->rx_eq.cur_eqd = 0;
1194         adapter->rx_eq.enable_aic = true;
1195
1196         /* Alloc Rx Event queue */
1197         eq = &adapter->rx_eq.q;
1198         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1199                                 sizeof(struct be_eq_entry));
1200         if (rc)
1201                 return rc;
1202
1203         /* Ask BE to create Rx Event queue */
1204         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1205         if (rc)
1206                 goto rx_eq_free;
1207
1208         /* Alloc RX eth compl queue */
1209         cq = &adapter->rx_obj.cq;
1210         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1211                         sizeof(struct be_eth_rx_compl));
1212         if (rc)
1213                 goto rx_eq_destroy;
1214
1215         /* Ask BE to create Rx eth compl queue */
1216         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1217         if (rc)
1218                 goto rx_cq_free;
1219
1220         /* Alloc RX eth queue */
1221         q = &adapter->rx_obj.q;
1222         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1223         if (rc)
1224                 goto rx_cq_destroy;
1225
1226         /* Ask BE to create Rx eth queue */
1227         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1228                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1229         if (rc)
1230                 goto rx_q_free;
1231
1232         return 0;
1233 rx_q_free:
1234         be_queue_free(adapter, q);
1235 rx_cq_destroy:
1236         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1237 rx_cq_free:
1238         be_queue_free(adapter, cq);
1239 rx_eq_destroy:
1240         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1241 rx_eq_free:
1242         be_queue_free(adapter, eq);
1243         return rc;
1244 }
1245 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1246 {
1247         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1248         u32 evt = entry->evt;
1249
1250         if (!evt)
1251                 return false;
1252
1253         evt = le32_to_cpu(evt);
1254         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1255         entry->evt = 0;
1256         queue_tail_inc(&eq_obj->q);
1257         return true;
1258 }
1259
1260 static int event_handle(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1261 {
1262         u16 rid = 0, num = 0;
1263
1264         while (event_get(eq_obj, &rid))
1265                 num++;
1266
1267         /* We can see an interrupt and no event */
1268         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1269         if (num)
1270                 napi_schedule(&eq_obj->napi);
1271
1272         return num;
1273 }
1274
1275 static irqreturn_t be_intx(int irq, void *dev)
1276 {
1277         struct be_adapter *adapter = dev;
1278         int isr;
1279
1280         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1281                         be_pci_func(adapter) * CEV_ISR_SIZE);
1282         if (!isr)
1283                 return IRQ_NONE;
1284
1285         event_handle(adapter, &adapter->tx_eq);
1286         event_handle(adapter, &adapter->rx_eq);
1287
1288         return IRQ_HANDLED;
1289 }
1290
1291 static irqreturn_t be_msix_rx(int irq, void *dev)
1292 {
1293         struct be_adapter *adapter = dev;
1294
1295         event_handle(adapter, &adapter->rx_eq);
1296
1297         return IRQ_HANDLED;
1298 }
1299
1300 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1301 {
1302         struct be_adapter *adapter = dev;
1303
1304         event_handle(adapter, &adapter->tx_eq);
1305
1306         return IRQ_HANDLED;
1307 }
1308
1309 static inline bool do_gro(struct be_adapter *adapter,
1310                         struct be_eth_rx_compl *rxcp)
1311 {
1312         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1313         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1314
1315         if (err)
1316                 drvr_stats(adapter)->be_rxcp_err++;
1317
1318         return (tcp_frame && !err) ? true : false;
1319 }
1320
1321 int be_poll_rx(struct napi_struct *napi, int budget)
1322 {
1323         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1324         struct be_adapter *adapter =
1325                 container_of(rx_eq, struct be_adapter, rx_eq);
1326         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1327         struct be_eth_rx_compl *rxcp;
1328         u32 work_done;
1329
1330         for (work_done = 0; work_done < budget; work_done++) {
1331                 rxcp = be_rx_compl_get(adapter);
1332                 if (!rxcp)
1333                         break;
1334
1335                 if (do_gro(adapter, rxcp))
1336                         be_rx_compl_process_gro(adapter, rxcp);
1337                 else
1338                         be_rx_compl_process(adapter, rxcp);
1339
1340                 be_rx_compl_reset(rxcp);
1341         }
1342
1343         /* Refill the queue */
1344         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1345                 be_post_rx_frags(adapter);
1346
1347         /* All consumed */
1348         if (work_done < budget) {
1349                 napi_complete(napi);
1350                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1351         } else {
1352                 /* More to be consumed; continue with interrupts disabled */
1353                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1354         }
1355         return work_done;
1356 }
1357
1358 void be_process_tx(struct be_adapter *adapter)
1359 {
1360         struct be_queue_info *txq = &adapter->tx_obj.q;
1361         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1362         struct be_eth_tx_compl *txcp;
1363         u32 num_cmpl = 0;
1364         u16 end_idx;
1365
1366         while ((txcp = be_tx_compl_get(tx_cq))) {
1367                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1368                                         wrb_index, txcp);
1369                 be_tx_compl_process(adapter, end_idx);
1370                 num_cmpl++;
1371         }
1372
1373         if (num_cmpl) {
1374                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1375
1376                 /* As Tx wrbs have been freed up, wake up netdev queue if
1377                  * it was stopped due to lack of tx wrbs.
1378                  */
1379                 if (netif_queue_stopped(adapter->netdev) &&
1380                         atomic_read(&txq->used) < txq->len / 2) {
1381                         netif_wake_queue(adapter->netdev);
1382                 }
1383
1384                 drvr_stats(adapter)->be_tx_events++;
1385                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1386         }
1387 }
1388
1389 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1390  * For TX/MCC we don't honour budget; consume everything
1391  */
1392 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1393 {
1394         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1395         struct be_adapter *adapter =
1396                 container_of(tx_eq, struct be_adapter, tx_eq);
1397
1398         napi_complete(napi);
1399
1400         be_process_tx(adapter);
1401
1402         be_process_mcc(adapter);
1403
1404         return 1;
1405 }
1406
1407 static void be_worker(struct work_struct *work)
1408 {
1409         struct be_adapter *adapter =
1410                 container_of(work, struct be_adapter, work.work);
1411         int status;
1412
1413         /* Get Stats */
1414         status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
1415         if (!status)
1416                 netdev_stats_update(adapter);
1417
1418         /* Set EQ delay */
1419         be_rx_eqd_update(adapter);
1420
1421         be_tx_rate_update(adapter);
1422         be_rx_rate_update(adapter);
1423
1424         if (adapter->rx_post_starved) {
1425                 adapter->rx_post_starved = false;
1426                 be_post_rx_frags(adapter);
1427         }
1428
1429         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1430 }
1431
1432 static void be_msix_enable(struct be_adapter *adapter)
1433 {
1434         int i, status;
1435
1436         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1437                 adapter->msix_entries[i].entry = i;
1438
1439         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1440                 BE_NUM_MSIX_VECTORS);
1441         if (status == 0)
1442                 adapter->msix_enabled = true;
1443         return;
1444 }
1445
1446 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1447 {
1448         return adapter->msix_entries[eq_id - 8 * be_pci_func(adapter)].vector;
1449 }
1450
1451 static int be_msix_register(struct be_adapter *adapter)
1452 {
1453         struct net_device *netdev = adapter->netdev;
1454         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1455         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1456         int status, vec;
1457
1458         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1459         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1460         status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter);
1461         if (status)
1462                 goto err;
1463
1464         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1465         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1466         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1467         if (status) { /* Free TX IRQ */
1468                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1469                 free_irq(vec, adapter);
1470                 goto err;
1471         }
1472         return 0;
1473 err:
1474         dev_warn(&adapter->pdev->dev,
1475                 "MSIX Request IRQ failed - err %d\n", status);
1476         pci_disable_msix(adapter->pdev);
1477         adapter->msix_enabled = false;
1478         return status;
1479 }
1480
1481 static int be_irq_register(struct be_adapter *adapter)
1482 {
1483         struct net_device *netdev = adapter->netdev;
1484         int status;
1485
1486         if (adapter->msix_enabled) {
1487                 status = be_msix_register(adapter);
1488                 if (status == 0)
1489                         goto done;
1490         }
1491
1492         /* INTx */
1493         netdev->irq = adapter->pdev->irq;
1494         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1495                         adapter);
1496         if (status) {
1497                 dev_err(&adapter->pdev->dev,
1498                         "INTx request IRQ failed - err %d\n", status);
1499                 return status;
1500         }
1501 done:
1502         adapter->isr_registered = true;
1503         return 0;
1504 }
1505
1506 static void be_irq_unregister(struct be_adapter *adapter)
1507 {
1508         struct net_device *netdev = adapter->netdev;
1509         int vec;
1510
1511         if (!adapter->isr_registered)
1512                 return;
1513
1514         /* INTx */
1515         if (!adapter->msix_enabled) {
1516                 free_irq(netdev->irq, adapter);
1517                 goto done;
1518         }
1519
1520         /* MSIx */
1521         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1522         free_irq(vec, adapter);
1523         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1524         free_irq(vec, adapter);
1525 done:
1526         adapter->isr_registered = false;
1527         return;
1528 }
1529
1530 static int be_open(struct net_device *netdev)
1531 {
1532         struct be_adapter *adapter = netdev_priv(netdev);
1533         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1534         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1535         bool link_up;
1536         int status;
1537
1538         /* First time posting */
1539         be_post_rx_frags(adapter);
1540
1541         napi_enable(&rx_eq->napi);
1542         napi_enable(&tx_eq->napi);
1543
1544         be_irq_register(adapter);
1545
1546         be_intr_set(adapter, true);
1547
1548         /* The evt queues are created in unarmed state; arm them */
1549         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1550         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1551
1552         /* Rx compl queue may be in unarmed state; rearm it */
1553         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1554
1555         status = be_cmd_link_status_query(adapter, &link_up);
1556         if (status)
1557                 return status;
1558         be_link_status_update(adapter, link_up);
1559
1560         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1561         return 0;
1562 }
1563
1564 static int be_setup(struct be_adapter *adapter)
1565 {
1566         struct net_device *netdev = adapter->netdev;
1567         u32 if_flags;
1568         int status;
1569
1570         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1571                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1572                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1573         status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1574                         false/* pmac_invalid */, &adapter->if_handle,
1575                         &adapter->pmac_id);
1576         if (status != 0)
1577                 goto do_none;
1578
1579         be_vid_config(netdev);
1580
1581         status = be_cmd_set_flow_control(adapter, true, true);
1582         if (status != 0)
1583                 goto if_destroy;
1584
1585         status = be_tx_queues_create(adapter);
1586         if (status != 0)
1587                 goto if_destroy;
1588
1589         status = be_rx_queues_create(adapter);
1590         if (status != 0)
1591                 goto tx_qs_destroy;
1592
1593         status = be_mcc_queues_create(adapter);
1594         if (status != 0)
1595                 goto rx_qs_destroy;
1596
1597         return 0;
1598
1599 rx_qs_destroy:
1600         be_rx_queues_destroy(adapter);
1601 tx_qs_destroy:
1602         be_tx_queues_destroy(adapter);
1603 if_destroy:
1604         be_cmd_if_destroy(adapter, adapter->if_handle);
1605 do_none:
1606         return status;
1607 }
1608
1609 static int be_clear(struct be_adapter *adapter)
1610 {
1611         be_rx_queues_destroy(adapter);
1612         be_tx_queues_destroy(adapter);
1613
1614         be_cmd_if_destroy(adapter, adapter->if_handle);
1615
1616         be_mcc_queues_destroy(adapter);
1617         return 0;
1618 }
1619
1620 static int be_close(struct net_device *netdev)
1621 {
1622         struct be_adapter *adapter = netdev_priv(netdev);
1623         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1624         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1625         int vec;
1626
1627         cancel_delayed_work_sync(&adapter->work);
1628
1629         netif_stop_queue(netdev);
1630         netif_carrier_off(netdev);
1631         adapter->link_up = false;
1632
1633         be_intr_set(adapter, false);
1634
1635         if (adapter->msix_enabled) {
1636                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1637                 synchronize_irq(vec);
1638                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1639                 synchronize_irq(vec);
1640         } else {
1641                 synchronize_irq(netdev->irq);
1642         }
1643         be_irq_unregister(adapter);
1644
1645         napi_disable(&rx_eq->napi);
1646         napi_disable(&tx_eq->napi);
1647
1648         return 0;
1649 }
1650
1651 static struct net_device_ops be_netdev_ops = {
1652         .ndo_open               = be_open,
1653         .ndo_stop               = be_close,
1654         .ndo_start_xmit         = be_xmit,
1655         .ndo_get_stats          = be_get_stats,
1656         .ndo_set_rx_mode        = be_set_multicast_list,
1657         .ndo_set_mac_address    = be_mac_addr_set,
1658         .ndo_change_mtu         = be_change_mtu,
1659         .ndo_validate_addr      = eth_validate_addr,
1660         .ndo_vlan_rx_register   = be_vlan_register,
1661         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1662         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1663 };
1664
1665 static void be_netdev_init(struct net_device *netdev)
1666 {
1667         struct be_adapter *adapter = netdev_priv(netdev);
1668
1669         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1670                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1671                 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1672
1673         netdev->flags |= IFF_MULTICAST;
1674
1675         adapter->rx_csum = true;
1676
1677         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1678
1679         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1680
1681         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1682                 BE_NAPI_WEIGHT);
1683         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1684                 BE_NAPI_WEIGHT);
1685
1686         netif_carrier_off(netdev);
1687         netif_stop_queue(netdev);
1688 }
1689
1690 static void be_unmap_pci_bars(struct be_adapter *adapter)
1691 {
1692         if (adapter->csr)
1693                 iounmap(adapter->csr);
1694         if (adapter->db)
1695                 iounmap(adapter->db);
1696         if (adapter->pcicfg)
1697                 iounmap(adapter->pcicfg);
1698 }
1699
1700 static int be_map_pci_bars(struct be_adapter *adapter)
1701 {
1702         u8 __iomem *addr;
1703
1704         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1705                         pci_resource_len(adapter->pdev, 2));
1706         if (addr == NULL)
1707                 return -ENOMEM;
1708         adapter->csr = addr;
1709
1710         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1711                         128 * 1024);
1712         if (addr == NULL)
1713                 goto pci_map_err;
1714         adapter->db = addr;
1715
1716         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1717                         pci_resource_len(adapter->pdev, 1));
1718         if (addr == NULL)
1719                 goto pci_map_err;
1720         adapter->pcicfg = addr;
1721
1722         return 0;
1723 pci_map_err:
1724         be_unmap_pci_bars(adapter);
1725         return -ENOMEM;
1726 }
1727
1728
1729 static void be_ctrl_cleanup(struct be_adapter *adapter)
1730 {
1731         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1732
1733         be_unmap_pci_bars(adapter);
1734
1735         if (mem->va)
1736                 pci_free_consistent(adapter->pdev, mem->size,
1737                         mem->va, mem->dma);
1738 }
1739
1740 static int be_ctrl_init(struct be_adapter *adapter)
1741 {
1742         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1743         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1744         int status;
1745
1746         status = be_map_pci_bars(adapter);
1747         if (status)
1748                 return status;
1749
1750         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1751         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1752                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1753         if (!mbox_mem_alloc->va) {
1754                 be_unmap_pci_bars(adapter);
1755                 return -1;
1756         }
1757         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1758         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1759         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1760         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1761         spin_lock_init(&adapter->mbox_lock);
1762         spin_lock_init(&adapter->mcc_lock);
1763         spin_lock_init(&adapter->mcc_cq_lock);
1764
1765         return 0;
1766 }
1767
1768 static void be_stats_cleanup(struct be_adapter *adapter)
1769 {
1770         struct be_stats_obj *stats = &adapter->stats;
1771         struct be_dma_mem *cmd = &stats->cmd;
1772
1773         if (cmd->va)
1774                 pci_free_consistent(adapter->pdev, cmd->size,
1775                         cmd->va, cmd->dma);
1776 }
1777
1778 static int be_stats_init(struct be_adapter *adapter)
1779 {
1780         struct be_stats_obj *stats = &adapter->stats;
1781         struct be_dma_mem *cmd = &stats->cmd;
1782
1783         cmd->size = sizeof(struct be_cmd_req_get_stats);
1784         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1785         if (cmd->va == NULL)
1786                 return -1;
1787         return 0;
1788 }
1789
1790 static void __devexit be_remove(struct pci_dev *pdev)
1791 {
1792         struct be_adapter *adapter = pci_get_drvdata(pdev);
1793         if (!adapter)
1794                 return;
1795
1796         unregister_netdev(adapter->netdev);
1797
1798         be_clear(adapter);
1799
1800         be_stats_cleanup(adapter);
1801
1802         be_ctrl_cleanup(adapter);
1803
1804         if (adapter->msix_enabled) {
1805                 pci_disable_msix(adapter->pdev);
1806                 adapter->msix_enabled = false;
1807         }
1808
1809         pci_set_drvdata(pdev, NULL);
1810         pci_release_regions(pdev);
1811         pci_disable_device(pdev);
1812
1813         free_netdev(adapter->netdev);
1814 }
1815
1816 static int be_hw_up(struct be_adapter *adapter)
1817 {
1818         int status;
1819
1820         status = be_cmd_POST(adapter);
1821         if (status)
1822                 return status;
1823
1824         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
1825         if (status)
1826                 return status;
1827
1828         status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
1829         return status;
1830 }
1831
1832 static int __devinit be_probe(struct pci_dev *pdev,
1833                         const struct pci_device_id *pdev_id)
1834 {
1835         int status = 0;
1836         struct be_adapter *adapter;
1837         struct net_device *netdev;
1838         u8 mac[ETH_ALEN];
1839
1840         status = pci_enable_device(pdev);
1841         if (status)
1842                 goto do_none;
1843
1844         status = pci_request_regions(pdev, DRV_NAME);
1845         if (status)
1846                 goto disable_dev;
1847         pci_set_master(pdev);
1848
1849         netdev = alloc_etherdev(sizeof(struct be_adapter));
1850         if (netdev == NULL) {
1851                 status = -ENOMEM;
1852                 goto rel_reg;
1853         }
1854         adapter = netdev_priv(netdev);
1855         adapter->pdev = pdev;
1856         pci_set_drvdata(pdev, adapter);
1857         adapter->netdev = netdev;
1858
1859         be_msix_enable(adapter);
1860
1861         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1862         if (!status) {
1863                 netdev->features |= NETIF_F_HIGHDMA;
1864         } else {
1865                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1866                 if (status) {
1867                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1868                         goto free_netdev;
1869                 }
1870         }
1871
1872         status = be_ctrl_init(adapter);
1873         if (status)
1874                 goto free_netdev;
1875
1876         status = be_stats_init(adapter);
1877         if (status)
1878                 goto ctrl_clean;
1879
1880         status = be_hw_up(adapter);
1881         if (status)
1882                 goto stats_clean;
1883
1884         status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
1885                         true /* permanent */, 0);
1886         if (status)
1887                 goto stats_clean;
1888         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1889
1890         INIT_DELAYED_WORK(&adapter->work, be_worker);
1891         be_netdev_init(netdev);
1892         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1893
1894         status = be_setup(adapter);
1895         if (status)
1896                 goto stats_clean;
1897         status = register_netdev(netdev);
1898         if (status != 0)
1899                 goto unsetup;
1900
1901         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1902         return 0;
1903
1904 unsetup:
1905         be_clear(adapter);
1906 stats_clean:
1907         be_stats_cleanup(adapter);
1908 ctrl_clean:
1909         be_ctrl_cleanup(adapter);
1910 free_netdev:
1911         free_netdev(adapter->netdev);
1912 rel_reg:
1913         pci_release_regions(pdev);
1914 disable_dev:
1915         pci_disable_device(pdev);
1916 do_none:
1917         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1918         return status;
1919 }
1920
1921 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1922 {
1923         struct be_adapter *adapter = pci_get_drvdata(pdev);
1924         struct net_device *netdev =  adapter->netdev;
1925
1926         netif_device_detach(netdev);
1927         if (netif_running(netdev)) {
1928                 rtnl_lock();
1929                 be_close(netdev);
1930                 be_clear(adapter);
1931                 rtnl_unlock();
1932         }
1933
1934         pci_save_state(pdev);
1935         pci_disable_device(pdev);
1936         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1937         return 0;
1938 }
1939
1940 static int be_resume(struct pci_dev *pdev)
1941 {
1942         int status = 0;
1943         struct be_adapter *adapter = pci_get_drvdata(pdev);
1944         struct net_device *netdev =  adapter->netdev;
1945
1946         netif_device_detach(netdev);
1947
1948         status = pci_enable_device(pdev);
1949         if (status)
1950                 return status;
1951
1952         pci_set_power_state(pdev, 0);
1953         pci_restore_state(pdev);
1954
1955         if (netif_running(netdev)) {
1956                 rtnl_lock();
1957                 be_setup(adapter);
1958                 be_open(netdev);
1959                 rtnl_unlock();
1960         }
1961         netif_device_attach(netdev);
1962         return 0;
1963 }
1964
1965 static struct pci_driver be_driver = {
1966         .name = DRV_NAME,
1967         .id_table = be_dev_ids,
1968         .probe = be_probe,
1969         .remove = be_remove,
1970         .suspend = be_suspend,
1971         .resume = be_resume
1972 };
1973
1974 static int __init be_init_module(void)
1975 {
1976         if (rx_frag_size != 8192 && rx_frag_size != 4096
1977                 && rx_frag_size != 2048) {
1978                 printk(KERN_WARNING DRV_NAME
1979                         " : Module param rx_frag_size must be 2048/4096/8192."
1980                         " Using 2048\n");
1981                 rx_frag_size = 2048;
1982         }
1983
1984         return pci_register_driver(&be_driver);
1985 }
1986 module_init(be_init_module);
1987
1988 static void __exit be_exit_module(void)
1989 {
1990         pci_unregister_driver(&be_driver);
1991 }
1992 module_exit(be_exit_module);