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 static int be_mac_addr_set(struct net_device *netdev, void *p)
 121 {
 122         struct be_adapter *adapter = netdev_priv(netdev);
 123         struct sockaddr *addr = p;
 124         int status = 0;
 125
 126         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 127         if (status)
 128                 return status;
 129
 130         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 131                         adapter->if_handle, &adapter->pmac_id);
 132         if (!status)
 133                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 134
 135         return status;
 136 }
 137
 138 static void netdev_stats_update(struct be_adapter *adapter)
 139 {
 140         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 141         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 142         struct be_port_rxf_stats *port_stats =
 143                         &rxf_stats->port[adapter->port_num];
 144         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 145         struct be_erx_stats *erx_stats = &hw_stats->erx;
 146
 147         dev_stats->rx_packets = port_stats->rx_total_frames;
 148         dev_stats->tx_packets = port_stats->tx_unicastframes +
 149                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 150         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 151                                 (u64) port_stats->rx_bytes_lsd;
 152         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 153                                 (u64) port_stats->tx_bytes_lsd;
 154
 155         /* bad pkts received */
 156         dev_stats->rx_errors = port_stats->rx_crc_errors +
 157                 port_stats->rx_alignment_symbol_errors +
 158                 port_stats->rx_in_range_errors +
 159                 port_stats->rx_out_range_errors +
 160                 port_stats->rx_frame_too_long +
 161                 port_stats->rx_dropped_too_small +
 162                 port_stats->rx_dropped_too_short +
 163                 port_stats->rx_dropped_header_too_small +
 164                 port_stats->rx_dropped_tcp_length +
 165                 port_stats->rx_dropped_runt +
 166                 port_stats->rx_tcp_checksum_errs +
 167                 port_stats->rx_ip_checksum_errs +
 168                 port_stats->rx_udp_checksum_errs;
 169
 170         /*  no space in linux buffers: best possible approximation */
 171         dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
 172
 173         /* detailed rx errors */
 174         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 175                 port_stats->rx_out_range_errors +
 176                 port_stats->rx_frame_too_long;
 177
 178         /* receive ring buffer overflow */
 179         dev_stats->rx_over_errors = 0;
 180
 181         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 182
 183         /* frame alignment errors */
 184         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 185
 186         /* receiver fifo overrun */
 187         /* drops_no_pbuf is no per i/f, it's per BE card */
 188         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 189                                         port_stats->rx_input_fifo_overflow +
 190                                         rxf_stats->rx_drops_no_pbuf;
 191         /* receiver missed packetd */
 192         dev_stats->rx_missed_errors = 0;
 193
 194         /*  packet transmit problems */
 195         dev_stats->tx_errors = 0;
 196
 197         /* no space available in linux */
 198         dev_stats->tx_dropped = 0;
 199
 200         dev_stats->multicast = port_stats->tx_multicastframes;
 201         dev_stats->collisions = 0;
 202
 203         /* detailed tx_errors */
 204         dev_stats->tx_aborted_errors = 0;
 205         dev_stats->tx_carrier_errors = 0;
 206         dev_stats->tx_fifo_errors = 0;
 207         dev_stats->tx_heartbeat_errors = 0;
 208         dev_stats->tx_window_errors = 0;
 209 }
 210
 211 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 212 {
 213         struct net_device *netdev = adapter->netdev;
 214
 215         /* If link came up or went down */
 216         if (adapter->link_up != link_up) {
 217                 if (link_up) {
 218                         netif_start_queue(netdev);
 219                         netif_carrier_on(netdev);
 220                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 221                 } else {
 222                         netif_stop_queue(netdev);
 223                         netif_carrier_off(netdev);
 224                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 225                 }
 226                 adapter->link_up = link_up;
 227         }
 228 }
 229
 230 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 231 static void be_rx_eqd_update(struct be_adapter *adapter)
 232 {
 233         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 234         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 235         ulong now = jiffies;
 236         u32 eqd;
 237
 238         if (!rx_eq->enable_aic)
 239                 return;
 240
 241         /* Wrapped around */
 242         if (time_before(now, stats->rx_fps_jiffies)) {
 243                 stats->rx_fps_jiffies = now;
 244                 return;
 245         }
 246
 247         /* Update once a second */
 248         if ((now - stats->rx_fps_jiffies) < HZ)
 249                 return;
 250
 251         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 252                         ((now - stats->rx_fps_jiffies) / HZ);
 253
 254         stats->rx_fps_jiffies = now;
 255         stats->be_prev_rx_frags = stats->be_rx_frags;
 256         eqd = stats->be_rx_fps / 110000;
 257         eqd = eqd << 3;
 258         if (eqd > rx_eq->max_eqd)
 259                 eqd = rx_eq->max_eqd;
 260         if (eqd < rx_eq->min_eqd)
 261                 eqd = rx_eq->min_eqd;
 262         if (eqd < 10)
 263                 eqd = 0;
 264         if (eqd != rx_eq->cur_eqd)
 265                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 266
 267         rx_eq->cur_eqd = eqd;
 268 }
 269
 270 static struct net_device_stats *be_get_stats(struct net_device *dev)
 271 {
 272         struct be_adapter *adapter = netdev_priv(dev);
 273
 274         return &adapter->stats.net_stats;
 275 }
 276
 277 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 278 {
 279         u64 rate = bytes;
 280
 281         do_div(rate, ticks / HZ);
 282         rate <<= 3;                     /* bytes/sec -> bits/sec */
 283         do_div(rate, 1000000ul);        /* MB/Sec */
 284
 285         return rate;
 286 }
 287
 288 static void be_tx_rate_update(struct be_adapter *adapter)
 289 {
 290         struct be_drvr_stats *stats = drvr_stats(adapter);
 291         ulong now = jiffies;
 292
 293         /* Wrapped around? */
 294         if (time_before(now, stats->be_tx_jiffies)) {
 295                 stats->be_tx_jiffies = now;
 296                 return;
 297         }
 298
 299         /* Update tx rate once in two seconds */
 300         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 301                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 302                                                   - stats->be_tx_bytes_prev,
 303                                                  now - stats->be_tx_jiffies);
 304                 stats->be_tx_jiffies = now;
 305                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 306         }
 307 }
 308
 309 static void be_tx_stats_update(struct be_adapter *adapter,
 310                         u32 wrb_cnt, u32 copied, bool stopped)
 311 {
 312         struct be_drvr_stats *stats = drvr_stats(adapter);
 313         stats->be_tx_reqs++;
 314         stats->be_tx_wrbs += wrb_cnt;
 315         stats->be_tx_bytes += copied;
 316         if (stopped)
 317                 stats->be_tx_stops++;
 318 }
 319
 320 /* Determine number of WRB entries needed to xmit data in an skb */
 321 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 322 {
 323         int cnt = (skb->len > skb->data_len);
 324
 325         cnt += skb_shinfo(skb)->nr_frags;
 326
 327         /* to account for hdr wrb */
 328         cnt++;
 329         if (cnt & 1) {
 330                 /* add a dummy to make it an even num */
 331                 cnt++;
 332                 *dummy = true;
 333         } else
 334                 *dummy = false;
 335         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 336         return cnt;
 337 }
 338
 339 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 340 {
 341         wrb->frag_pa_hi = upper_32_bits(addr);
 342         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 343         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 344 }
 345
 346 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 347                 bool vlan, u32 wrb_cnt, u32 len)
 348 {
 349         memset(hdr, 0, sizeof(*hdr));
 350
 351         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 352
 353         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 354                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 355                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 356                         hdr, skb_shinfo(skb)->gso_size);
 357         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 358                 if (is_tcp_pkt(skb))
 359                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 360                 else if (is_udp_pkt(skb))
 361                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 362         }
 363
 364         if (vlan && vlan_tx_tag_present(skb)) {
 365                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 366                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 367                         hdr, vlan_tx_tag_get(skb));
 368         }
 369
 370         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 371         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 372         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 373         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 374 }
 375
 376
 377 static int make_tx_wrbs(struct be_adapter *adapter,
 378                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 379 {
 380         u64 busaddr;
 381         u32 i, copied = 0;
 382         struct pci_dev *pdev = adapter->pdev;
 383         struct sk_buff *first_skb = skb;
 384         struct be_queue_info *txq = &adapter->tx_obj.q;
 385         struct be_eth_wrb *wrb;
 386         struct be_eth_hdr_wrb *hdr;
 387
 388         atomic_add(wrb_cnt, &txq->used);
 389         hdr = queue_head_node(txq);
 390         queue_head_inc(txq);
 391
 392         if (skb->len > skb->data_len) {
 393                 int len = skb->len - skb->data_len;
 394                 busaddr = pci_map_single(pdev, skb->data, len,
 395                                          PCI_DMA_TODEVICE);
 396                 wrb = queue_head_node(txq);
 397                 wrb_fill(wrb, busaddr, len);
 398                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 399                 queue_head_inc(txq);
 400                 copied += len;
 401         }
 402
 403         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 404                 struct skb_frag_struct *frag =
 405                         &skb_shinfo(skb)->frags[i];
 406                 busaddr = pci_map_page(pdev, frag->page,
 407                                         frag->page_offset,
 408                                         frag->size, PCI_DMA_TODEVICE);
 409                 wrb = queue_head_node(txq);
 410                 wrb_fill(wrb, busaddr, frag->size);
 411                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 412                 queue_head_inc(txq);
 413                 copied += frag->size;
 414         }
 415
 416         if (dummy_wrb) {
 417                 wrb = queue_head_node(txq);
 418                 wrb_fill(wrb, 0, 0);
 419                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 420                 queue_head_inc(txq);
 421         }
 422
 423         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 424                 wrb_cnt, copied);
 425         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 426
 427         return copied;
 428 }
 429
 430 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 431 {
 432         struct be_adapter *adapter = netdev_priv(netdev);
 433         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 434         struct be_queue_info *txq = &tx_obj->q;
 435         u32 wrb_cnt = 0, copied = 0;
 436         u32 start = txq->head;
 437         bool dummy_wrb, stopped = false;
 438
 439         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 440
 441         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 442
 443         /* record the sent skb in the sent_skb table */
 444         BUG_ON(tx_obj->sent_skb_list[start]);
 445         tx_obj->sent_skb_list[start] = skb;
 446
 447         /* Ensure that txq has space for the next skb; Else stop the queue
 448          * *BEFORE* ringing the tx doorbell, so that we serialze the
 449          * tx compls of the current transmit which'll wake up the queue
 450          */
 451         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 452                 netif_stop_queue(netdev);
 453                 stopped = true;
 454         }
 455
 456         be_txq_notify(adapter, txq->id, wrb_cnt);
 457
 458         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 459         return NETDEV_TX_OK;
 460 }
 461
 462 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 463 {
 464         struct be_adapter *adapter = netdev_priv(netdev);
 465         if (new_mtu < BE_MIN_MTU ||
 466                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 467                 dev_info(&adapter->pdev->dev,
 468                         "MTU must be between %d and %d bytes\n",
 469                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 470                 return -EINVAL;
 471         }
 472         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 473                         netdev->mtu, new_mtu);
 474         netdev->mtu = new_mtu;
 475         return 0;
 476 }
 477
 478 /*
 479  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 480  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 481  * set the BE in promiscuous VLAN mode.
 482  */
 483 static void be_vid_config(struct net_device *netdev)
 484 {
 485         struct be_adapter *adapter = netdev_priv(netdev);
 486         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 487         u16 ntags = 0, i;
 488
 489         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 490                 /* Construct VLAN Table to give to HW */
 491                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 492                         if (adapter->vlan_tag[i]) {
 493                                 vtag[ntags] = cpu_to_le16(i);
 494                                 ntags++;
 495                         }
 496                 }
 497                 be_cmd_vlan_config(adapter, adapter->if_handle,
 498                         vtag, ntags, 1, 0);
 499         } else {
 500                 be_cmd_vlan_config(adapter, adapter->if_handle,
 501                         NULL, 0, 1, 1);
 502         }
 503 }
 504
 505 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 506 {
 507         struct be_adapter *adapter = netdev_priv(netdev);
 508         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 509         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 510
 511         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 512         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 513         adapter->vlan_grp = grp;
 514         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 515         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 516 }
 517
 518 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 519 {
 520         struct be_adapter *adapter = netdev_priv(netdev);
 521
 522         adapter->num_vlans++;
 523         adapter->vlan_tag[vid] = 1;
 524
 525         be_vid_config(netdev);
 526 }
 527
 528 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 529 {
 530         struct be_adapter *adapter = netdev_priv(netdev);
 531
 532         adapter->num_vlans--;
 533         adapter->vlan_tag[vid] = 0;
 534
 535         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 536         be_vid_config(netdev);
 537 }
 538
 539 static void be_set_multicast_list(struct net_device *netdev)
 540 {
 541         struct be_adapter *adapter = netdev_priv(netdev);
 542
 543         if (netdev->flags & IFF_PROMISC) {
 544                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 545                 adapter->promiscuous = true;
 546                 goto done;
 547         }
 548
 549         /* BE was previously in promiscous mode; disable it */
 550         if (adapter->promiscuous) {
 551                 adapter->promiscuous = false;
 552                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 553         }
 554
 555         if (netdev->flags & IFF_ALLMULTI) {
 556                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
 557                 goto done;
 558         }
 559
 560         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 561                 netdev->mc_count);
 562 done:
 563         return;
 564 }
 565
 566 static void be_rx_rate_update(struct be_adapter *adapter)
 567 {
 568         struct be_drvr_stats *stats = drvr_stats(adapter);
 569         ulong now = jiffies;
 570
 571         /* Wrapped around */
 572         if (time_before(now, stats->be_rx_jiffies)) {
 573                 stats->be_rx_jiffies = now;
 574                 return;
 575         }
 576
 577         /* Update the rate once in two seconds */
 578         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 579                 return;
 580
 581         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 582                                           - stats->be_rx_bytes_prev,
 583                                          now - stats->be_rx_jiffies);
 584         stats->be_rx_jiffies = now;
 585         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 586 }
 587
 588 static void be_rx_stats_update(struct be_adapter *adapter,
 589                 u32 pktsize, u16 numfrags)
 590 {
 591         struct be_drvr_stats *stats = drvr_stats(adapter);
 592
 593         stats->be_rx_compl++;
 594         stats->be_rx_frags += numfrags;
 595         stats->be_rx_bytes += pktsize;
 596 }
 597
 598 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 599 {
 600         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 601
 602         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 603         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 604         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 605         if (ip_version) {
 606                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 607                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 608         }
 609         ipv6_chk = (ip_version && (tcpf || udpf));
 610
 611         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 612 }
 613
 614 static struct be_rx_page_info *
 615 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 616 {
 617         struct be_rx_page_info *rx_page_info;
 618         struct be_queue_info *rxq = &adapter->rx_obj.q;
 619
 620         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 621         BUG_ON(!rx_page_info->page);
 622
 623         if (rx_page_info->last_page_user)
 624                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 625                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 626
 627         atomic_dec(&rxq->used);
 628         return rx_page_info;
 629 }
 630
 631 /* Throwaway the data in the Rx completion */
 632 static void be_rx_compl_discard(struct be_adapter *adapter,
 633                         struct be_eth_rx_compl *rxcp)
 634 {
 635         struct be_queue_info *rxq = &adapter->rx_obj.q;
 636         struct be_rx_page_info *page_info;
 637         u16 rxq_idx, i, num_rcvd;
 638
 639         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 640         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 641
 642         for (i = 0; i < num_rcvd; i++) {
 643                 page_info = get_rx_page_info(adapter, rxq_idx);
 644                 put_page(page_info->page);
 645                 memset(page_info, 0, sizeof(*page_info));
 646                 index_inc(&rxq_idx, rxq->len);
 647         }
 648 }
 649
 650 /*
 651  * skb_fill_rx_data forms a complete skb for an ether frame
 652  * indicated by rxcp.
 653  */
 654 static void skb_fill_rx_data(struct be_adapter *adapter,
 655                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 656 {
 657         struct be_queue_info *rxq = &adapter->rx_obj.q;
 658         struct be_rx_page_info *page_info;
 659         u16 rxq_idx, i, num_rcvd, j;
 660         u32 pktsize, hdr_len, curr_frag_len, size;
 661         u8 *start;
 662
 663         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 664         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 665         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 666
 667         page_info = get_rx_page_info(adapter, rxq_idx);
 668
 669         start = page_address(page_info->page) + page_info->page_offset;
 670         prefetch(start);
 671
 672         /* Copy data in the first descriptor of this completion */
 673         curr_frag_len = min(pktsize, rx_frag_size);
 674
 675         /* Copy the header portion into skb_data */
 676         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 677         memcpy(skb->data, start, hdr_len);
 678         skb->len = curr_frag_len;
 679         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 680                 /* Complete packet has now been moved to data */
 681                 put_page(page_info->page);
 682                 skb->data_len = 0;
 683                 skb->tail += curr_frag_len;
 684         } else {
 685                 skb_shinfo(skb)->nr_frags = 1;
 686                 skb_shinfo(skb)->frags[0].page = page_info->page;
 687                 skb_shinfo(skb)->frags[0].page_offset =
 688                                         page_info->page_offset + hdr_len;
 689                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 690                 skb->data_len = curr_frag_len - hdr_len;
 691                 skb->tail += hdr_len;
 692         }
 693         memset(page_info, 0, sizeof(*page_info));
 694
 695         if (pktsize <= rx_frag_size) {
 696                 BUG_ON(num_rcvd != 1);
 697                 goto done;
 698         }
 699
 700         /* More frags present for this completion */
 701         size = pktsize;
 702         for (i = 1, j = 0; i < num_rcvd; i++) {
 703                 size -= curr_frag_len;
 704                 index_inc(&rxq_idx, rxq->len);
 705                 page_info = get_rx_page_info(adapter, rxq_idx);
 706
 707                 curr_frag_len = min(size, rx_frag_size);
 708
 709                 /* Coalesce all frags from the same physical page in one slot */
 710                 if (page_info->page_offset == 0) {
 711                         /* Fresh page */
 712                         j++;
 713                         skb_shinfo(skb)->frags[j].page = page_info->page;
 714                         skb_shinfo(skb)->frags[j].page_offset =
 715                                                         page_info->page_offset;
 716                         skb_shinfo(skb)->frags[j].size = 0;
 717                         skb_shinfo(skb)->nr_frags++;
 718                 } else {
 719                         put_page(page_info->page);
 720                 }
 721
 722                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 723                 skb->len += curr_frag_len;
 724                 skb->data_len += curr_frag_len;
 725
 726                 memset(page_info, 0, sizeof(*page_info));
 727         }
 728         BUG_ON(j > MAX_SKB_FRAGS);
 729
 730 done:
 731         be_rx_stats_update(adapter, pktsize, num_rcvd);
 732         return;
 733 }
 734
 735 /* Process the RX completion indicated by rxcp when GRO is disabled */
 736 static void be_rx_compl_process(struct be_adapter *adapter,
 737                         struct be_eth_rx_compl *rxcp)
 738 {
 739         struct sk_buff *skb;
 740         u32 vtp, vid;
 741
 742         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 743
 744         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 745         if (!skb) {
 746                 if (net_ratelimit())
 747                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 748                 be_rx_compl_discard(adapter, rxcp);
 749                 return;
 750         }
 751
 752         skb_reserve(skb, NET_IP_ALIGN);
 753
 754         skb_fill_rx_data(adapter, skb, rxcp);
 755
 756         if (do_pkt_csum(rxcp, adapter->rx_csum))
 757                 skb->ip_summed = CHECKSUM_NONE;
 758         else
 759                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 760
 761         skb->truesize = skb->len + sizeof(struct sk_buff);
 762         skb->protocol = eth_type_trans(skb, adapter->netdev);
 763         skb->dev = adapter->netdev;
 764
 765         if (vtp) {
 766                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 767                         kfree_skb(skb);
 768                         return;
 769                 }
 770                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 771                 vid = be16_to_cpu(vid);
 772                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 773         } else {
 774                 netif_receive_skb(skb);
 775         }
 776
 777         adapter->netdev->last_rx = jiffies;
 778
 779         return;
 780 }
 781
 782 /* Process the RX completion indicated by rxcp when GRO is enabled */
 783 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 784                         struct be_eth_rx_compl *rxcp)
 785 {
 786         struct be_rx_page_info *page_info;
 787         struct sk_buff *skb = NULL;
 788         struct be_queue_info *rxq = &adapter->rx_obj.q;
 789         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 790         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 791         u16 i, rxq_idx = 0, vid, j;
 792
 793         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 794         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 795         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 796         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 797
 798         skb = napi_get_frags(&eq_obj->napi);
 799         if (!skb) {
 800                 be_rx_compl_discard(adapter, rxcp);
 801                 return;
 802         }
 803
 804         remaining = pkt_size;
 805         for (i = 0, j = -1; i < num_rcvd; i++) {
 806                 page_info = get_rx_page_info(adapter, rxq_idx);
 807
 808                 curr_frag_len = min(remaining, rx_frag_size);
 809
 810                 /* Coalesce all frags from the same physical page in one slot */
 811                 if (i == 0 || page_info->page_offset == 0) {
 812                         /* First frag or Fresh page */
 813                         j++;
 814                         skb_shinfo(skb)->frags[j].page = page_info->page;
 815                         skb_shinfo(skb)->frags[j].page_offset =
 816                                                         page_info->page_offset;
 817                         skb_shinfo(skb)->frags[j].size = 0;
 818                 } else {
 819                         put_page(page_info->page);
 820                 }
 821                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 822
 823                 remaining -= curr_frag_len;
 824                 index_inc(&rxq_idx, rxq->len);
 825                 memset(page_info, 0, sizeof(*page_info));
 826         }
 827         BUG_ON(j > MAX_SKB_FRAGS);
 828
 829         skb_shinfo(skb)->nr_frags = j + 1;
 830         skb->len = pkt_size;
 831         skb->data_len = pkt_size;
 832         skb->truesize += pkt_size;
 833         skb->ip_summed = CHECKSUM_UNNECESSARY;
 834
 835         if (likely(!vlanf)) {
 836                 napi_gro_frags(&eq_obj->napi);
 837         } else {
 838                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 839                 vid = be16_to_cpu(vid);
 840
 841                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 842                         return;
 843
 844                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 845         }
 846
 847         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 848         return;
 849 }
 850
 851 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 852 {
 853         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 854
 855         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 856                 return NULL;
 857
 858         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 859
 860         queue_tail_inc(&adapter->rx_obj.cq);
 861         return rxcp;
 862 }
 863
 864 /* To reset the valid bit, we need to reset the whole word as
 865  * when walking the queue the valid entries are little-endian
 866  * and invalid entries are host endian
 867  */
 868 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 869 {
 870         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 871 }
 872
 873 static inline struct page *be_alloc_pages(u32 size)
 874 {
 875         gfp_t alloc_flags = GFP_ATOMIC;
 876         u32 order = get_order(size);
 877         if (order > 0)
 878                 alloc_flags |= __GFP_COMP;
 879         return  alloc_pages(alloc_flags, order);
 880 }
 881
 882 /*
 883  * Allocate a page, split it to fragments of size rx_frag_size and post as
 884  * receive buffers to BE
 885  */
 886 static void be_post_rx_frags(struct be_adapter *adapter)
 887 {
 888         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 889         struct be_rx_page_info *page_info = NULL;
 890         struct be_queue_info *rxq = &adapter->rx_obj.q;
 891         struct page *pagep = NULL;
 892         struct be_eth_rx_d *rxd;
 893         u64 page_dmaaddr = 0, frag_dmaaddr;
 894         u32 posted, page_offset = 0;
 895
 896         page_info = &page_info_tbl[rxq->head];
 897         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 898                 if (!pagep) {
 899                         pagep = be_alloc_pages(adapter->big_page_size);
 900                         if (unlikely(!pagep)) {
 901                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 902                                 break;
 903                         }
 904                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 905                                                 adapter->big_page_size,
 906                                                 PCI_DMA_FROMDEVICE);
 907                         page_info->page_offset = 0;
 908                 } else {
 909                         get_page(pagep);
 910                         page_info->page_offset = page_offset + rx_frag_size;
 911                 }
 912                 page_offset = page_info->page_offset;
 913                 page_info->page = pagep;
 914                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 915                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 916
 917                 rxd = queue_head_node(rxq);
 918                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 919                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 920                 queue_head_inc(rxq);
 921
 922                 /* Any space left in the current big page for another frag? */
 923                 if ((page_offset + rx_frag_size + rx_frag_size) >
 924                                         adapter->big_page_size) {
 925                         pagep = NULL;
 926                         page_info->last_page_user = true;
 927                 }
 928                 page_info = &page_info_tbl[rxq->head];
 929         }
 930         if (pagep)
 931                 page_info->last_page_user = true;
 932
 933         if (posted) {
 934                 atomic_add(posted, &rxq->used);
 935                 be_rxq_notify(adapter, rxq->id, posted);
 936         } else if (atomic_read(&rxq->used) == 0) {
 937                 /* Let be_worker replenish when memory is available */
 938                 adapter->rx_post_starved = true;
 939         }
 940
 941         return;
 942 }
 943
 944 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 945 {
 946         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 947
 948         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 949                 return NULL;
 950
 951         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 952
 953         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 954
 955         queue_tail_inc(tx_cq);
 956         return txcp;
 957 }
 958
 959 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 960 {
 961         struct be_queue_info *txq = &adapter->tx_obj.q;
 962         struct be_eth_wrb *wrb;
 963         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 964         struct sk_buff *sent_skb;
 965         u64 busaddr;
 966         u16 cur_index, num_wrbs = 0;
 967
 968         cur_index = txq->tail;
 969         sent_skb = sent_skbs[cur_index];
 970         BUG_ON(!sent_skb);
 971         sent_skbs[cur_index] = NULL;
 972
 973         do {
 974                 cur_index = txq->tail;
 975                 wrb = queue_tail_node(txq);
 976                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 977                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 978                 if (busaddr != 0) {
 979                         pci_unmap_single(adapter->pdev, busaddr,
 980                                 wrb->frag_len, PCI_DMA_TODEVICE);
 981                 }
 982                 num_wrbs++;
 983                 queue_tail_inc(txq);
 984         } while (cur_index != last_index);
 985
 986         atomic_sub(num_wrbs, &txq->used);
 987
 988         kfree_skb(sent_skb);
 989 }
 990
 991 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
 992 {
 993         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
 994
 995         if (!eqe->evt)
 996                 return NULL;
 997
 998         eqe->evt = le32_to_cpu(eqe->evt);
 999         queue_tail_inc(&eq_obj->q);
1000         return eqe;
1001 }
1002
1003 static int event_handle(struct be_adapter *adapter,
1004                         struct be_eq_obj *eq_obj)
1005 {
1006         struct be_eq_entry *eqe;
1007         u16 num = 0;
1008
1009         while ((eqe = event_get(eq_obj)) != NULL) {
1010                 eqe->evt = 0;
1011                 num++;
1012         }
1013
1014         /* Deal with any spurious interrupts that come
1015          * without events
1016          */
1017         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1018         if (num)
1019                 napi_schedule(&eq_obj->napi);
1020
1021         return num;
1022 }
1023
1024 /* Just read and notify events without processing them.
1025  * Used at the time of destroying event queues */
1026 static void be_eq_clean(struct be_adapter *adapter,
1027                         struct be_eq_obj *eq_obj)
1028 {
1029         struct be_eq_entry *eqe;
1030         u16 num = 0;
1031
1032         while ((eqe = event_get(eq_obj)) != NULL) {
1033                 eqe->evt = 0;
1034                 num++;
1035         }
1036
1037         if (num)
1038                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1039 }
1040
1041 static void be_rx_q_clean(struct be_adapter *adapter)
1042 {
1043         struct be_rx_page_info *page_info;
1044         struct be_queue_info *rxq = &adapter->rx_obj.q;
1045         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1046         struct be_eth_rx_compl *rxcp;
1047         u16 tail;
1048
1049         /* First cleanup pending rx completions */
1050         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1051                 be_rx_compl_discard(adapter, rxcp);
1052                 be_rx_compl_reset(rxcp);
1053                 be_cq_notify(adapter, rx_cq->id, true, 1);
1054         }
1055
1056         /* Then free posted rx buffer that were not used */
1057         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1058         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1059                 page_info = get_rx_page_info(adapter, tail);
1060                 put_page(page_info->page);
1061                 memset(page_info, 0, sizeof(*page_info));
1062         }
1063         BUG_ON(atomic_read(&rxq->used));
1064 }
1065
1066 static void be_tx_compl_clean(struct be_adapter *adapter)
1067 {
1068         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1069         struct be_queue_info *txq = &adapter->tx_obj.q;
1070         struct be_eth_tx_compl *txcp;
1071         u16 end_idx, cmpl = 0, timeo = 0;
1072
1073         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1074         do {
1075                 while ((txcp = be_tx_compl_get(tx_cq))) {
1076                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1077                                         wrb_index, txcp);
1078                         be_tx_compl_process(adapter, end_idx);
1079                         cmpl++;
1080                 }
1081                 if (cmpl) {
1082                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1083                         cmpl = 0;
1084                 }
1085
1086                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1087                         break;
1088
1089                 mdelay(1);
1090         } while (true);
1091
1092         if (atomic_read(&txq->used))
1093                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1094                         atomic_read(&txq->used));
1095 }
1096
1097 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1098 {
1099         struct be_queue_info *q;
1100
1101         q = &adapter->mcc_obj.q;
1102         if (q->created)
1103                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1104         be_queue_free(adapter, q);
1105
1106         q = &adapter->mcc_obj.cq;
1107         if (q->created)
1108                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1109         be_queue_free(adapter, q);
1110 }
1111
1112 /* Must be called only after TX qs are created as MCC shares TX EQ */
1113 static int be_mcc_queues_create(struct be_adapter *adapter)
1114 {
1115         struct be_queue_info *q, *cq;
1116
1117         /* Alloc MCC compl queue */
1118         cq = &adapter->mcc_obj.cq;
1119         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1120                         sizeof(struct be_mcc_compl)))
1121                 goto err;
1122
1123         /* Ask BE to create MCC compl queue; share TX's eq */
1124         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1125                 goto mcc_cq_free;
1126
1127         /* Alloc MCC queue */
1128         q = &adapter->mcc_obj.q;
1129         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1130                 goto mcc_cq_destroy;
1131
1132         /* Ask BE to create MCC queue */
1133         if (be_cmd_mccq_create(adapter, q, cq))
1134                 goto mcc_q_free;
1135
1136         return 0;
1137
1138 mcc_q_free:
1139         be_queue_free(adapter, q);
1140 mcc_cq_destroy:
1141         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1142 mcc_cq_free:
1143         be_queue_free(adapter, cq);
1144 err:
1145         return -1;
1146 }
1147
1148 static void be_tx_queues_destroy(struct be_adapter *adapter)
1149 {
1150         struct be_queue_info *q;
1151
1152         q = &adapter->tx_obj.q;
1153         if (q->created)
1154                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1155         be_queue_free(adapter, q);
1156
1157         q = &adapter->tx_obj.cq;
1158         if (q->created)
1159                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1160         be_queue_free(adapter, q);
1161
1162         /* Clear any residual events */
1163         be_eq_clean(adapter, &adapter->tx_eq);
1164
1165         q = &adapter->tx_eq.q;
1166         if (q->created)
1167                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1168         be_queue_free(adapter, q);
1169 }
1170
1171 static int be_tx_queues_create(struct be_adapter *adapter)
1172 {
1173         struct be_queue_info *eq, *q, *cq;
1174
1175         adapter->tx_eq.max_eqd = 0;
1176         adapter->tx_eq.min_eqd = 0;
1177         adapter->tx_eq.cur_eqd = 96;
1178         adapter->tx_eq.enable_aic = false;
1179         /* Alloc Tx Event queue */
1180         eq = &adapter->tx_eq.q;
1181         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1182                 return -1;
1183
1184         /* Ask BE to create Tx Event queue */
1185         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1186                 goto tx_eq_free;
1187         /* Alloc TX eth compl queue */
1188         cq = &adapter->tx_obj.cq;
1189         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1190                         sizeof(struct be_eth_tx_compl)))
1191                 goto tx_eq_destroy;
1192
1193         /* Ask BE to create Tx eth compl queue */
1194         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1195                 goto tx_cq_free;
1196
1197         /* Alloc TX eth queue */
1198         q = &adapter->tx_obj.q;
1199         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1200                 goto tx_cq_destroy;
1201
1202         /* Ask BE to create Tx eth queue */
1203         if (be_cmd_txq_create(adapter, q, cq))
1204                 goto tx_q_free;
1205         return 0;
1206
1207 tx_q_free:
1208         be_queue_free(adapter, q);
1209 tx_cq_destroy:
1210         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1211 tx_cq_free:
1212         be_queue_free(adapter, cq);
1213 tx_eq_destroy:
1214         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1215 tx_eq_free:
1216         be_queue_free(adapter, eq);
1217         return -1;
1218 }
1219
1220 static void be_rx_queues_destroy(struct be_adapter *adapter)
1221 {
1222         struct be_queue_info *q;
1223
1224         q = &adapter->rx_obj.q;
1225         if (q->created) {
1226                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1227                 be_rx_q_clean(adapter);
1228         }
1229         be_queue_free(adapter, q);
1230
1231         q = &adapter->rx_obj.cq;
1232         if (q->created)
1233                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1234         be_queue_free(adapter, q);
1235
1236         /* Clear any residual events */
1237         be_eq_clean(adapter, &adapter->rx_eq);
1238
1239         q = &adapter->rx_eq.q;
1240         if (q->created)
1241                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1242         be_queue_free(adapter, q);
1243 }
1244
1245 static int be_rx_queues_create(struct be_adapter *adapter)
1246 {
1247         struct be_queue_info *eq, *q, *cq;
1248         int rc;
1249
1250         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1251         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1252         adapter->rx_eq.min_eqd = 0;
1253         adapter->rx_eq.cur_eqd = 0;
1254         adapter->rx_eq.enable_aic = true;
1255
1256         /* Alloc Rx Event queue */
1257         eq = &adapter->rx_eq.q;
1258         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1259                                 sizeof(struct be_eq_entry));
1260         if (rc)
1261                 return rc;
1262
1263         /* Ask BE to create Rx Event queue */
1264         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1265         if (rc)
1266                 goto rx_eq_free;
1267
1268         /* Alloc RX eth compl queue */
1269         cq = &adapter->rx_obj.cq;
1270         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1271                         sizeof(struct be_eth_rx_compl));
1272         if (rc)
1273                 goto rx_eq_destroy;
1274
1275         /* Ask BE to create Rx eth compl queue */
1276         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1277         if (rc)
1278                 goto rx_cq_free;
1279
1280         /* Alloc RX eth queue */
1281         q = &adapter->rx_obj.q;
1282         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1283         if (rc)
1284                 goto rx_cq_destroy;
1285
1286         /* Ask BE to create Rx eth queue */
1287         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1288                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1289         if (rc)
1290                 goto rx_q_free;
1291
1292         return 0;
1293 rx_q_free:
1294         be_queue_free(adapter, q);
1295 rx_cq_destroy:
1296         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1297 rx_cq_free:
1298         be_queue_free(adapter, cq);
1299 rx_eq_destroy:
1300         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1301 rx_eq_free:
1302         be_queue_free(adapter, eq);
1303         return rc;
1304 }
1305
1306 static irqreturn_t be_intx(int irq, void *dev)
1307 {
1308         struct be_adapter *adapter = dev;
1309         int isr;
1310
1311         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1312                         be_pci_func(adapter) * CEV_ISR_SIZE);
1313         if (!isr)
1314                 return IRQ_NONE;
1315
1316         event_handle(adapter, &adapter->tx_eq);
1317         event_handle(adapter, &adapter->rx_eq);
1318
1319         return IRQ_HANDLED;
1320 }
1321
1322 static irqreturn_t be_msix_rx(int irq, void *dev)
1323 {
1324         struct be_adapter *adapter = dev;
1325
1326         event_handle(adapter, &adapter->rx_eq);
1327
1328         return IRQ_HANDLED;
1329 }
1330
1331 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1332 {
1333         struct be_adapter *adapter = dev;
1334
1335         event_handle(adapter, &adapter->tx_eq);
1336
1337         return IRQ_HANDLED;
1338 }
1339
1340 static inline bool do_gro(struct be_adapter *adapter,
1341                         struct be_eth_rx_compl *rxcp)
1342 {
1343         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1344         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1345
1346         if (err)
1347                 drvr_stats(adapter)->be_rxcp_err++;
1348
1349         return (tcp_frame && !err) ? true : false;
1350 }
1351
1352 int be_poll_rx(struct napi_struct *napi, int budget)
1353 {
1354         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1355         struct be_adapter *adapter =
1356                 container_of(rx_eq, struct be_adapter, rx_eq);
1357         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1358         struct be_eth_rx_compl *rxcp;
1359         u32 work_done;
1360
1361         for (work_done = 0; work_done < budget; work_done++) {
1362                 rxcp = be_rx_compl_get(adapter);
1363                 if (!rxcp)
1364                         break;
1365
1366                 if (do_gro(adapter, rxcp))
1367                         be_rx_compl_process_gro(adapter, rxcp);
1368                 else
1369                         be_rx_compl_process(adapter, rxcp);
1370
1371                 be_rx_compl_reset(rxcp);
1372         }
1373
1374         /* Refill the queue */
1375         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1376                 be_post_rx_frags(adapter);
1377
1378         /* All consumed */
1379         if (work_done < budget) {
1380                 napi_complete(napi);
1381                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1382         } else {
1383                 /* More to be consumed; continue with interrupts disabled */
1384                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1385         }
1386         return work_done;
1387 }
1388
1389 void be_process_tx(struct be_adapter *adapter)
1390 {
1391         struct be_queue_info *txq = &adapter->tx_obj.q;
1392         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1393         struct be_eth_tx_compl *txcp;
1394         u32 num_cmpl = 0;
1395         u16 end_idx;
1396
1397         while ((txcp = be_tx_compl_get(tx_cq))) {
1398                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1399                                         wrb_index, txcp);
1400                 be_tx_compl_process(adapter, end_idx);
1401                 num_cmpl++;
1402         }
1403
1404         if (num_cmpl) {
1405                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1406
1407                 /* As Tx wrbs have been freed up, wake up netdev queue if
1408                  * it was stopped due to lack of tx wrbs.
1409                  */
1410                 if (netif_queue_stopped(adapter->netdev) &&
1411                         atomic_read(&txq->used) < txq->len / 2) {
1412                         netif_wake_queue(adapter->netdev);
1413                 }
1414
1415                 drvr_stats(adapter)->be_tx_events++;
1416                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1417         }
1418 }
1419
1420 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1421  * For TX/MCC we don't honour budget; consume everything
1422  */
1423 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1424 {
1425         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1426         struct be_adapter *adapter =
1427                 container_of(tx_eq, struct be_adapter, tx_eq);
1428
1429         napi_complete(napi);
1430
1431         be_process_tx(adapter);
1432
1433         be_process_mcc(adapter);
1434
1435         return 1;
1436 }
1437
1438 static void be_worker(struct work_struct *work)
1439 {
1440         struct be_adapter *adapter =
1441                 container_of(work, struct be_adapter, work.work);
1442         int status;
1443
1444         /* Get Stats */
1445         status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
1446         if (!status)
1447                 netdev_stats_update(adapter);
1448
1449         /* Set EQ delay */
1450         be_rx_eqd_update(adapter);
1451
1452         be_tx_rate_update(adapter);
1453         be_rx_rate_update(adapter);
1454
1455         if (adapter->rx_post_starved) {
1456                 adapter->rx_post_starved = false;
1457                 be_post_rx_frags(adapter);
1458         }
1459
1460         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1461 }
1462
1463 static void be_msix_enable(struct be_adapter *adapter)
1464 {
1465         int i, status;
1466
1467         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1468                 adapter->msix_entries[i].entry = i;
1469
1470         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1471                 BE_NUM_MSIX_VECTORS);
1472         if (status == 0)
1473                 adapter->msix_enabled = true;
1474         return;
1475 }
1476
1477 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1478 {
1479         return adapter->msix_entries[eq_id - 8 * be_pci_func(adapter)].vector;
1480 }
1481
1482 static int be_msix_register(struct be_adapter *adapter)
1483 {
1484         struct net_device *netdev = adapter->netdev;
1485         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1486         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1487         int status, vec;
1488
1489         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1490         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1491         status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter);
1492         if (status)
1493                 goto err;
1494
1495         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1496         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1497         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1498         if (status) { /* Free TX IRQ */
1499                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1500                 free_irq(vec, adapter);
1501                 goto err;
1502         }
1503         return 0;
1504 err:
1505         dev_warn(&adapter->pdev->dev,
1506                 "MSIX Request IRQ failed - err %d\n", status);
1507         pci_disable_msix(adapter->pdev);
1508         adapter->msix_enabled = false;
1509         return status;
1510 }
1511
1512 static int be_irq_register(struct be_adapter *adapter)
1513 {
1514         struct net_device *netdev = adapter->netdev;
1515         int status;
1516
1517         if (adapter->msix_enabled) {
1518                 status = be_msix_register(adapter);
1519                 if (status == 0)
1520                         goto done;
1521         }
1522
1523         /* INTx */
1524         netdev->irq = adapter->pdev->irq;
1525         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1526                         adapter);
1527         if (status) {
1528                 dev_err(&adapter->pdev->dev,
1529                         "INTx request IRQ failed - err %d\n", status);
1530                 return status;
1531         }
1532 done:
1533         adapter->isr_registered = true;
1534         return 0;
1535 }
1536
1537 static void be_irq_unregister(struct be_adapter *adapter)
1538 {
1539         struct net_device *netdev = adapter->netdev;
1540         int vec;
1541
1542         if (!adapter->isr_registered)
1543                 return;
1544
1545         /* INTx */
1546         if (!adapter->msix_enabled) {
1547                 free_irq(netdev->irq, adapter);
1548                 goto done;
1549         }
1550
1551         /* MSIx */
1552         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1553         free_irq(vec, adapter);
1554         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1555         free_irq(vec, adapter);
1556 done:
1557         adapter->isr_registered = false;
1558         return;
1559 }
1560
1561 static int be_open(struct net_device *netdev)
1562 {
1563         struct be_adapter *adapter = netdev_priv(netdev);
1564         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1565         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1566         bool link_up;
1567         int status;
1568
1569         /* First time posting */
1570         be_post_rx_frags(adapter);
1571
1572         napi_enable(&rx_eq->napi);
1573         napi_enable(&tx_eq->napi);
1574
1575         be_irq_register(adapter);
1576
1577         be_intr_set(adapter, true);
1578
1579         /* The evt queues are created in unarmed state; arm them */
1580         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1581         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1582
1583         /* Rx compl queue may be in unarmed state; rearm it */
1584         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1585
1586         status = be_cmd_link_status_query(adapter, &link_up);
1587         if (status)
1588                 return status;
1589         be_link_status_update(adapter, link_up);
1590
1591         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1592         return 0;
1593 }
1594
1595 static int be_setup(struct be_adapter *adapter)
1596 {
1597         struct net_device *netdev = adapter->netdev;
1598         u32 if_flags;
1599         int status;
1600
1601         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1602                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1603                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1604         status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1605                         false/* pmac_invalid */, &adapter->if_handle,
1606                         &adapter->pmac_id);
1607         if (status != 0)
1608                 goto do_none;
1609
1610         be_vid_config(netdev);
1611
1612         status = be_cmd_set_flow_control(adapter, true, true);
1613         if (status != 0)
1614                 goto if_destroy;
1615
1616         status = be_tx_queues_create(adapter);
1617         if (status != 0)
1618                 goto if_destroy;
1619
1620         status = be_rx_queues_create(adapter);
1621         if (status != 0)
1622                 goto tx_qs_destroy;
1623
1624         status = be_mcc_queues_create(adapter);
1625         if (status != 0)
1626                 goto rx_qs_destroy;
1627
1628         return 0;
1629
1630 rx_qs_destroy:
1631         be_rx_queues_destroy(adapter);
1632 tx_qs_destroy:
1633         be_tx_queues_destroy(adapter);
1634 if_destroy:
1635         be_cmd_if_destroy(adapter, adapter->if_handle);
1636 do_none:
1637         return status;
1638 }
1639
1640 static int be_clear(struct be_adapter *adapter)
1641 {
1642         be_rx_queues_destroy(adapter);
1643         be_tx_queues_destroy(adapter);
1644
1645         be_cmd_if_destroy(adapter, adapter->if_handle);
1646
1647         be_mcc_queues_destroy(adapter);
1648         return 0;
1649 }
1650
1651 static int be_close(struct net_device *netdev)
1652 {
1653         struct be_adapter *adapter = netdev_priv(netdev);
1654         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1655         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1656         int vec;
1657
1658         cancel_delayed_work_sync(&adapter->work);
1659
1660         netif_stop_queue(netdev);
1661         netif_carrier_off(netdev);
1662         adapter->link_up = false;
1663
1664         be_intr_set(adapter, false);
1665
1666         if (adapter->msix_enabled) {
1667                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1668                 synchronize_irq(vec);
1669                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1670                 synchronize_irq(vec);
1671         } else {
1672                 synchronize_irq(netdev->irq);
1673         }
1674         be_irq_unregister(adapter);
1675
1676         napi_disable(&rx_eq->napi);
1677         napi_disable(&tx_eq->napi);
1678
1679         /* Wait for all pending tx completions to arrive so that
1680          * all tx skbs are freed.
1681          */
1682         be_tx_compl_clean(adapter);
1683
1684         return 0;
1685 }
1686
1687 static struct net_device_ops be_netdev_ops = {
1688         .ndo_open               = be_open,
1689         .ndo_stop               = be_close,
1690         .ndo_start_xmit         = be_xmit,
1691         .ndo_get_stats          = be_get_stats,
1692         .ndo_set_rx_mode        = be_set_multicast_list,
1693         .ndo_set_mac_address    = be_mac_addr_set,
1694         .ndo_change_mtu         = be_change_mtu,
1695         .ndo_validate_addr      = eth_validate_addr,
1696         .ndo_vlan_rx_register   = be_vlan_register,
1697         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1698         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1699 };
1700
1701 static void be_netdev_init(struct net_device *netdev)
1702 {
1703         struct be_adapter *adapter = netdev_priv(netdev);
1704
1705         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1706                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1707                 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1708
1709         netdev->flags |= IFF_MULTICAST;
1710
1711         adapter->rx_csum = true;
1712
1713         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1714
1715         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1716
1717         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1718                 BE_NAPI_WEIGHT);
1719         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1720                 BE_NAPI_WEIGHT);
1721
1722         netif_carrier_off(netdev);
1723         netif_stop_queue(netdev);
1724 }
1725
1726 static void be_unmap_pci_bars(struct be_adapter *adapter)
1727 {
1728         if (adapter->csr)
1729                 iounmap(adapter->csr);
1730         if (adapter->db)
1731                 iounmap(adapter->db);
1732         if (adapter->pcicfg)
1733                 iounmap(adapter->pcicfg);
1734 }
1735
1736 static int be_map_pci_bars(struct be_adapter *adapter)
1737 {
1738         u8 __iomem *addr;
1739
1740         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1741                         pci_resource_len(adapter->pdev, 2));
1742         if (addr == NULL)
1743                 return -ENOMEM;
1744         adapter->csr = addr;
1745
1746         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1747                         128 * 1024);
1748         if (addr == NULL)
1749                 goto pci_map_err;
1750         adapter->db = addr;
1751
1752         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1753                         pci_resource_len(adapter->pdev, 1));
1754         if (addr == NULL)
1755                 goto pci_map_err;
1756         adapter->pcicfg = addr;
1757
1758         return 0;
1759 pci_map_err:
1760         be_unmap_pci_bars(adapter);
1761         return -ENOMEM;
1762 }
1763
1764
1765 static void be_ctrl_cleanup(struct be_adapter *adapter)
1766 {
1767         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1768
1769         be_unmap_pci_bars(adapter);
1770
1771         if (mem->va)
1772                 pci_free_consistent(adapter->pdev, mem->size,
1773                         mem->va, mem->dma);
1774 }
1775
1776 static int be_ctrl_init(struct be_adapter *adapter)
1777 {
1778         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1779         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1780         int status;
1781
1782         status = be_map_pci_bars(adapter);
1783         if (status)
1784                 return status;
1785
1786         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1787         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1788                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1789         if (!mbox_mem_alloc->va) {
1790                 be_unmap_pci_bars(adapter);
1791                 return -1;
1792         }
1793         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1794         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1795         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1796         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1797         spin_lock_init(&adapter->mbox_lock);
1798         spin_lock_init(&adapter->mcc_lock);
1799         spin_lock_init(&adapter->mcc_cq_lock);
1800
1801         return 0;
1802 }
1803
1804 static void be_stats_cleanup(struct be_adapter *adapter)
1805 {
1806         struct be_stats_obj *stats = &adapter->stats;
1807         struct be_dma_mem *cmd = &stats->cmd;
1808
1809         if (cmd->va)
1810                 pci_free_consistent(adapter->pdev, cmd->size,
1811                         cmd->va, cmd->dma);
1812 }
1813
1814 static int be_stats_init(struct be_adapter *adapter)
1815 {
1816         struct be_stats_obj *stats = &adapter->stats;
1817         struct be_dma_mem *cmd = &stats->cmd;
1818
1819         cmd->size = sizeof(struct be_cmd_req_get_stats);
1820         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1821         if (cmd->va == NULL)
1822                 return -1;
1823         return 0;
1824 }
1825
1826 static void __devexit be_remove(struct pci_dev *pdev)
1827 {
1828         struct be_adapter *adapter = pci_get_drvdata(pdev);
1829         if (!adapter)
1830                 return;
1831
1832         unregister_netdev(adapter->netdev);
1833
1834         be_clear(adapter);
1835
1836         be_stats_cleanup(adapter);
1837
1838         be_ctrl_cleanup(adapter);
1839
1840         if (adapter->msix_enabled) {
1841                 pci_disable_msix(adapter->pdev);
1842                 adapter->msix_enabled = false;
1843         }
1844
1845         pci_set_drvdata(pdev, NULL);
1846         pci_release_regions(pdev);
1847         pci_disable_device(pdev);
1848
1849         free_netdev(adapter->netdev);
1850 }
1851
1852 static int be_hw_up(struct be_adapter *adapter)
1853 {
1854         int status;
1855
1856         status = be_cmd_POST(adapter);
1857         if (status)
1858                 return status;
1859
1860         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
1861         if (status)
1862                 return status;
1863
1864         status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
1865         return status;
1866 }
1867
1868 static int __devinit be_probe(struct pci_dev *pdev,
1869                         const struct pci_device_id *pdev_id)
1870 {
1871         int status = 0;
1872         struct be_adapter *adapter;
1873         struct net_device *netdev;
1874         u8 mac[ETH_ALEN];
1875
1876         status = pci_enable_device(pdev);
1877         if (status)
1878                 goto do_none;
1879
1880         status = pci_request_regions(pdev, DRV_NAME);
1881         if (status)
1882                 goto disable_dev;
1883         pci_set_master(pdev);
1884
1885         netdev = alloc_etherdev(sizeof(struct be_adapter));
1886         if (netdev == NULL) {
1887                 status = -ENOMEM;
1888                 goto rel_reg;
1889         }
1890         adapter = netdev_priv(netdev);
1891         adapter->pdev = pdev;
1892         pci_set_drvdata(pdev, adapter);
1893         adapter->netdev = netdev;
1894
1895         be_msix_enable(adapter);
1896
1897         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1898         if (!status) {
1899                 netdev->features |= NETIF_F_HIGHDMA;
1900         } else {
1901                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1902                 if (status) {
1903                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1904                         goto free_netdev;
1905                 }
1906         }
1907
1908         status = be_ctrl_init(adapter);
1909         if (status)
1910                 goto free_netdev;
1911
1912         status = be_cmd_reset_function(adapter);
1913         if (status)
1914                 goto ctrl_clean;
1915
1916         status = be_stats_init(adapter);
1917         if (status)
1918                 goto ctrl_clean;
1919
1920         status = be_hw_up(adapter);
1921         if (status)
1922                 goto stats_clean;
1923
1924         status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
1925                         true /* permanent */, 0);
1926         if (status)
1927                 goto stats_clean;
1928         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1929
1930         INIT_DELAYED_WORK(&adapter->work, be_worker);
1931         be_netdev_init(netdev);
1932         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1933
1934         status = be_setup(adapter);
1935         if (status)
1936                 goto stats_clean;
1937         status = register_netdev(netdev);
1938         if (status != 0)
1939                 goto unsetup;
1940
1941         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1942         return 0;
1943
1944 unsetup:
1945         be_clear(adapter);
1946 stats_clean:
1947         be_stats_cleanup(adapter);
1948 ctrl_clean:
1949         be_ctrl_cleanup(adapter);
1950 free_netdev:
1951         free_netdev(adapter->netdev);
1952 rel_reg:
1953         pci_release_regions(pdev);
1954 disable_dev:
1955         pci_disable_device(pdev);
1956 do_none:
1957         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1958         return status;
1959 }
1960
1961 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1962 {
1963         struct be_adapter *adapter = pci_get_drvdata(pdev);
1964         struct net_device *netdev =  adapter->netdev;
1965
1966         netif_device_detach(netdev);
1967         if (netif_running(netdev)) {
1968                 rtnl_lock();
1969                 be_close(netdev);
1970                 rtnl_unlock();
1971         }
1972         be_clear(adapter);
1973
1974         pci_save_state(pdev);
1975         pci_disable_device(pdev);
1976         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1977         return 0;
1978 }
1979
1980 static int be_resume(struct pci_dev *pdev)
1981 {
1982         int status = 0;
1983         struct be_adapter *adapter = pci_get_drvdata(pdev);
1984         struct net_device *netdev =  adapter->netdev;
1985
1986         netif_device_detach(netdev);
1987
1988         status = pci_enable_device(pdev);
1989         if (status)
1990                 return status;
1991
1992         pci_set_power_state(pdev, 0);
1993         pci_restore_state(pdev);
1994
1995         be_setup(adapter);
1996         if (netif_running(netdev)) {
1997                 rtnl_lock();
1998                 be_open(netdev);
1999                 rtnl_unlock();
2000         }
2001         netif_device_attach(netdev);
2002         return 0;
2003 }
2004
2005 static struct pci_driver be_driver = {
2006         .name = DRV_NAME,
2007         .id_table = be_dev_ids,
2008         .probe = be_probe,
2009         .remove = be_remove,
2010         .suspend = be_suspend,
2011         .resume = be_resume
2012 };
2013
2014 static int __init be_init_module(void)
2015 {
2016         if (rx_frag_size != 8192 && rx_frag_size != 4096
2017                 && rx_frag_size != 2048) {
2018                 printk(KERN_WARNING DRV_NAME
2019                         " : Module param rx_frag_size must be 2048/4096/8192."
2020                         " Using 2048\n");
2021                 rx_frag_size = 2048;
2022         }
2023
2024         return pci_register_driver(&be_driver);
2025 }
2026 module_init(be_init_module);
2027
2028 static void __exit be_exit_module(void)
2029 {
2030         pci_unregister_driver(&be_driver);
2031 }
2032 module_exit(be_exit_module);