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, BE_DEVICE_ID2) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  37         { 0 }
  38 };
  39 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  40
  41 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  42 {
  43         struct be_dma_mem *mem = &q->dma_mem;
  44         if (mem->va)
  45                 pci_free_consistent(adapter->pdev, mem->size,
  46                         mem->va, mem->dma);
  47 }
  48
  49 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  50                 u16 len, u16 entry_size)
  51 {
  52         struct be_dma_mem *mem = &q->dma_mem;
  53
  54         memset(q, 0, sizeof(*q));
  55         q->len = len;
  56         q->entry_size = entry_size;
  57         mem->size = len * entry_size;
  58         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  59         if (!mem->va)
  60                 return -1;
  61         memset(mem->va, 0, mem->size);
  62         return 0;
  63 }
  64
  65 static void be_intr_set(struct be_adapter *adapter, bool enable)
  66 {
  67         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  68         u32 reg = ioread32(addr);
  69         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  70
  71         if (!enabled && enable)
  72                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  73         else if (enabled && !enable)
  74                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  75         else
  76                 return;
  77
  78         iowrite32(reg, addr);
  79 }
  80
  81 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  82 {
  83         u32 val = 0;
  84         val |= qid & DB_RQ_RING_ID_MASK;
  85         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  86         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  87 }
  88
  89 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  90 {
  91         u32 val = 0;
  92         val |= qid & DB_TXULP_RING_ID_MASK;
  93         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  94         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  95 }
  96
  97 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  98                 bool arm, bool clear_int, u16 num_popped)
  99 {
 100         u32 val = 0;
 101         val |= qid & DB_EQ_RING_ID_MASK;
 102         if (arm)
 103                 val |= 1 << DB_EQ_REARM_SHIFT;
 104         if (clear_int)
 105                 val |= 1 << DB_EQ_CLR_SHIFT;
 106         val |= 1 << DB_EQ_EVNT_SHIFT;
 107         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 108         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 109 }
 110
 111 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 112 {
 113         u32 val = 0;
 114         val |= qid & DB_CQ_RING_ID_MASK;
 115         if (arm)
 116                 val |= 1 << DB_CQ_REARM_SHIFT;
 117         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 118         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 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 (!is_valid_ether_addr(addr->sa_data))
 128                 return -EADDRNOTAVAIL;
 129
 130         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 131         if (status)
 132                 return status;
 133
 134         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 135                         adapter->if_handle, &adapter->pmac_id);
 136         if (!status)
 137                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 138
 139         return status;
 140 }
 141
 142 void netdev_stats_update(struct be_adapter *adapter)
 143 {
 144         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 145         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 146         struct be_port_rxf_stats *port_stats =
 147                         &rxf_stats->port[adapter->port_num];
 148         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 149         struct be_erx_stats *erx_stats = &hw_stats->erx;
 150
 151         dev_stats->rx_packets = port_stats->rx_total_frames;
 152         dev_stats->tx_packets = port_stats->tx_unicastframes +
 153                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 154         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 155                                 (u64) port_stats->rx_bytes_lsd;
 156         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 157                                 (u64) port_stats->tx_bytes_lsd;
 158
 159         /* bad pkts received */
 160         dev_stats->rx_errors = port_stats->rx_crc_errors +
 161                 port_stats->rx_alignment_symbol_errors +
 162                 port_stats->rx_in_range_errors +
 163                 port_stats->rx_out_range_errors +
 164                 port_stats->rx_frame_too_long +
 165                 port_stats->rx_dropped_too_small +
 166                 port_stats->rx_dropped_too_short +
 167                 port_stats->rx_dropped_header_too_small +
 168                 port_stats->rx_dropped_tcp_length +
 169                 port_stats->rx_dropped_runt +
 170                 port_stats->rx_tcp_checksum_errs +
 171                 port_stats->rx_ip_checksum_errs +
 172                 port_stats->rx_udp_checksum_errs;
 173
 174         /*  no space in linux buffers: best possible approximation */
 175         dev_stats->rx_dropped =
 176                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 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->rx_multicast_frames;
 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                 adapter->link_speed = -1;
 223                 if (link_up) {
 224                         netif_start_queue(netdev);
 225                         netif_carrier_on(netdev);
 226                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 227                 } else {
 228                         netif_stop_queue(netdev);
 229                         netif_carrier_off(netdev);
 230                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 231                 }
 232                 adapter->link_up = link_up;
 233         }
 234 }
 235
 236 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 237 static void be_rx_eqd_update(struct be_adapter *adapter)
 238 {
 239         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 240         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 241         ulong now = jiffies;
 242         u32 eqd;
 243
 244         if (!rx_eq->enable_aic)
 245                 return;
 246
 247         /* Wrapped around */
 248         if (time_before(now, stats->rx_fps_jiffies)) {
 249                 stats->rx_fps_jiffies = now;
 250                 return;
 251         }
 252
 253         /* Update once a second */
 254         if ((now - stats->rx_fps_jiffies) < HZ)
 255                 return;
 256
 257         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 258                         ((now - stats->rx_fps_jiffies) / HZ);
 259
 260         stats->rx_fps_jiffies = now;
 261         stats->be_prev_rx_frags = stats->be_rx_frags;
 262         eqd = stats->be_rx_fps / 110000;
 263         eqd = eqd << 3;
 264         if (eqd > rx_eq->max_eqd)
 265                 eqd = rx_eq->max_eqd;
 266         if (eqd < rx_eq->min_eqd)
 267                 eqd = rx_eq->min_eqd;
 268         if (eqd < 10)
 269                 eqd = 0;
 270         if (eqd != rx_eq->cur_eqd)
 271                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 272
 273         rx_eq->cur_eqd = eqd;
 274 }
 275
 276 static struct net_device_stats *be_get_stats(struct net_device *dev)
 277 {
 278         return &dev->stats;
 279 }
 280
 281 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 282 {
 283         u64 rate = bytes;
 284
 285         do_div(rate, ticks / HZ);
 286         rate <<= 3;                     /* bytes/sec -> bits/sec */
 287         do_div(rate, 1000000ul);        /* MB/Sec */
 288
 289         return rate;
 290 }
 291
 292 static void be_tx_rate_update(struct be_adapter *adapter)
 293 {
 294         struct be_drvr_stats *stats = drvr_stats(adapter);
 295         ulong now = jiffies;
 296
 297         /* Wrapped around? */
 298         if (time_before(now, stats->be_tx_jiffies)) {
 299                 stats->be_tx_jiffies = now;
 300                 return;
 301         }
 302
 303         /* Update tx rate once in two seconds */
 304         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 305                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 306                                                   - stats->be_tx_bytes_prev,
 307                                                  now - stats->be_tx_jiffies);
 308                 stats->be_tx_jiffies = now;
 309                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 310         }
 311 }
 312
 313 static void be_tx_stats_update(struct be_adapter *adapter,
 314                         u32 wrb_cnt, u32 copied, bool stopped)
 315 {
 316         struct be_drvr_stats *stats = drvr_stats(adapter);
 317         stats->be_tx_reqs++;
 318         stats->be_tx_wrbs += wrb_cnt;
 319         stats->be_tx_bytes += copied;
 320         if (stopped)
 321                 stats->be_tx_stops++;
 322 }
 323
 324 /* Determine number of WRB entries needed to xmit data in an skb */
 325 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 326 {
 327         int cnt = (skb->len > skb->data_len);
 328
 329         cnt += skb_shinfo(skb)->nr_frags;
 330
 331         /* to account for hdr wrb */
 332         cnt++;
 333         if (cnt & 1) {
 334                 /* add a dummy to make it an even num */
 335                 cnt++;
 336                 *dummy = true;
 337         } else
 338                 *dummy = false;
 339         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 340         return cnt;
 341 }
 342
 343 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 344 {
 345         wrb->frag_pa_hi = upper_32_bits(addr);
 346         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 347         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 348 }
 349
 350 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 351                 bool vlan, u32 wrb_cnt, u32 len)
 352 {
 353         memset(hdr, 0, sizeof(*hdr));
 354
 355         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 356
 357         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 358                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 359                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 360                         hdr, skb_shinfo(skb)->gso_size);
 361         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 362                 if (is_tcp_pkt(skb))
 363                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 364                 else if (is_udp_pkt(skb))
 365                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 366         }
 367
 368         if (vlan && vlan_tx_tag_present(skb)) {
 369                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 371                         hdr, vlan_tx_tag_get(skb));
 372         }
 373
 374         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 375         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 376         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 377         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 378 }
 379
 380
 381 static int make_tx_wrbs(struct be_adapter *adapter,
 382                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 383 {
 384         u64 busaddr;
 385         u32 i, copied = 0;
 386         struct pci_dev *pdev = adapter->pdev;
 387         struct sk_buff *first_skb = skb;
 388         struct be_queue_info *txq = &adapter->tx_obj.q;
 389         struct be_eth_wrb *wrb;
 390         struct be_eth_hdr_wrb *hdr;
 391
 392         hdr = queue_head_node(txq);
 393         atomic_add(wrb_cnt, &txq->used);
 394         queue_head_inc(txq);
 395
 396         if (skb->len > skb->data_len) {
 397                 int len = skb->len - skb->data_len;
 398                 busaddr = pci_map_single(pdev, skb->data, len,
 399                                          PCI_DMA_TODEVICE);
 400                 wrb = queue_head_node(txq);
 401                 wrb_fill(wrb, busaddr, len);
 402                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 403                 queue_head_inc(txq);
 404                 copied += len;
 405         }
 406
 407         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 408                 struct skb_frag_struct *frag =
 409                         &skb_shinfo(skb)->frags[i];
 410                 busaddr = pci_map_page(pdev, frag->page,
 411                                        frag->page_offset,
 412                                        frag->size, PCI_DMA_TODEVICE);
 413                 wrb = queue_head_node(txq);
 414                 wrb_fill(wrb, busaddr, frag->size);
 415                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 416                 queue_head_inc(txq);
 417                 copied += frag->size;
 418         }
 419
 420         if (dummy_wrb) {
 421                 wrb = queue_head_node(txq);
 422                 wrb_fill(wrb, 0, 0);
 423                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 424                 queue_head_inc(txq);
 425         }
 426
 427         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 428                 wrb_cnt, copied);
 429         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 430
 431         return copied;
 432 }
 433
 434 static netdev_tx_t be_xmit(struct sk_buff *skb,
 435                         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         if (copied) {
 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 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)) >=
 457                                                                 txq->len) {
 458                         netif_stop_queue(netdev);
 459                         stopped = true;
 460                 }
 461
 462                 be_txq_notify(adapter, txq->id, wrb_cnt);
 463
 464                 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 465         } else {
 466                 txq->head = start;
 467                 dev_kfree_skb_any(skb);
 468         }
 469         return NETDEV_TX_OK;
 470 }
 471
 472 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 473 {
 474         struct be_adapter *adapter = netdev_priv(netdev);
 475         if (new_mtu < BE_MIN_MTU ||
 476                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 477                                         (ETH_HLEN + ETH_FCS_LEN))) {
 478                 dev_info(&adapter->pdev->dev,
 479                         "MTU must be between %d and %d bytes\n",
 480                         BE_MIN_MTU,
 481                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 482                 return -EINVAL;
 483         }
 484         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 485                         netdev->mtu, new_mtu);
 486         netdev->mtu = new_mtu;
 487         return 0;
 488 }
 489
 490 /*
 491  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 492  * If the user configures more, place BE in vlan promiscuous mode.
 493  */
 494 static int be_vid_config(struct be_adapter *adapter)
 495 {
 496         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 497         u16 ntags = 0, i;
 498         int status = 0;
 499
 500         if (adapter->vlans_added <= adapter->max_vlans)  {
 501                 /* Construct VLAN Table to give to HW */
 502                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 503                         if (adapter->vlan_tag[i]) {
 504                                 vtag[ntags] = cpu_to_le16(i);
 505                                 ntags++;
 506                         }
 507                 }
 508                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 509                                         vtag, ntags, 1, 0);
 510         } else {
 511                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 512                                         NULL, 0, 1, 1);
 513         }
 514         return status;
 515 }
 516
 517 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 518 {
 519         struct be_adapter *adapter = netdev_priv(netdev);
 520         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 521         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 522
 523         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 524         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 525         adapter->vlan_grp = grp;
 526         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 527         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 528 }
 529
 530 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 531 {
 532         struct be_adapter *adapter = netdev_priv(netdev);
 533
 534         adapter->vlan_tag[vid] = 1;
 535         adapter->vlans_added++;
 536         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 537                 be_vid_config(adapter);
 538 }
 539
 540 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 541 {
 542         struct be_adapter *adapter = netdev_priv(netdev);
 543
 544         adapter->vlan_tag[vid] = 0;
 545         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 546         adapter->vlans_added--;
 547         if (adapter->vlans_added <= adapter->max_vlans)
 548                 be_vid_config(adapter);
 549 }
 550
 551 static void be_set_multicast_list(struct net_device *netdev)
 552 {
 553         struct be_adapter *adapter = netdev_priv(netdev);
 554
 555         if (netdev->flags & IFF_PROMISC) {
 556                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 557                 adapter->promiscuous = true;
 558                 goto done;
 559         }
 560
 561         /* BE was previously in promiscous mode; disable it */
 562         if (adapter->promiscuous) {
 563                 adapter->promiscuous = false;
 564                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 565         }
 566
 567         /* Enable multicast promisc if num configured exceeds what we support */
 568         if (netdev->flags & IFF_ALLMULTI ||
 569             netdev_mc_count(netdev) > BE_MAX_MC) {
 570                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
 571                                 &adapter->mc_cmd_mem);
 572                 goto done;
 573         }
 574
 575         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 576                 netdev_mc_count(netdev), &adapter->mc_cmd_mem);
 577 done:
 578         return;
 579 }
 580
 581 static void be_rx_rate_update(struct be_adapter *adapter)
 582 {
 583         struct be_drvr_stats *stats = drvr_stats(adapter);
 584         ulong now = jiffies;
 585
 586         /* Wrapped around */
 587         if (time_before(now, stats->be_rx_jiffies)) {
 588                 stats->be_rx_jiffies = now;
 589                 return;
 590         }
 591
 592         /* Update the rate once in two seconds */
 593         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 594                 return;
 595
 596         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 597                                           - stats->be_rx_bytes_prev,
 598                                          now - stats->be_rx_jiffies);
 599         stats->be_rx_jiffies = now;
 600         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 601 }
 602
 603 static void be_rx_stats_update(struct be_adapter *adapter,
 604                 u32 pktsize, u16 numfrags)
 605 {
 606         struct be_drvr_stats *stats = drvr_stats(adapter);
 607
 608         stats->be_rx_compl++;
 609         stats->be_rx_frags += numfrags;
 610         stats->be_rx_bytes += pktsize;
 611 }
 612
 613 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 614 {
 615         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 616
 617         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 618         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 619         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 620         if (ip_version) {
 621                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 622                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 623         }
 624         ipv6_chk = (ip_version && (tcpf || udpf));
 625
 626         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 627 }
 628
 629 static struct be_rx_page_info *
 630 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 631 {
 632         struct be_rx_page_info *rx_page_info;
 633         struct be_queue_info *rxq = &adapter->rx_obj.q;
 634
 635         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 636         BUG_ON(!rx_page_info->page);
 637
 638         if (rx_page_info->last_page_user) {
 639                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 640                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 641                 rx_page_info->last_page_user = false;
 642         }
 643
 644         atomic_dec(&rxq->used);
 645         return rx_page_info;
 646 }
 647
 648 /* Throwaway the data in the Rx completion */
 649 static void be_rx_compl_discard(struct be_adapter *adapter,
 650                         struct be_eth_rx_compl *rxcp)
 651 {
 652         struct be_queue_info *rxq = &adapter->rx_obj.q;
 653         struct be_rx_page_info *page_info;
 654         u16 rxq_idx, i, num_rcvd;
 655
 656         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 657         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 658
 659         for (i = 0; i < num_rcvd; i++) {
 660                 page_info = get_rx_page_info(adapter, rxq_idx);
 661                 put_page(page_info->page);
 662                 memset(page_info, 0, sizeof(*page_info));
 663                 index_inc(&rxq_idx, rxq->len);
 664         }
 665 }
 666
 667 /*
 668  * skb_fill_rx_data forms a complete skb for an ether frame
 669  * indicated by rxcp.
 670  */
 671 static void skb_fill_rx_data(struct be_adapter *adapter,
 672                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 673 {
 674         struct be_queue_info *rxq = &adapter->rx_obj.q;
 675         struct be_rx_page_info *page_info;
 676         u16 rxq_idx, i, num_rcvd, j;
 677         u32 pktsize, hdr_len, curr_frag_len, size;
 678         u8 *start;
 679
 680         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 681         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 682         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 683
 684         page_info = get_rx_page_info(adapter, rxq_idx);
 685
 686         start = page_address(page_info->page) + page_info->page_offset;
 687         prefetch(start);
 688
 689         /* Copy data in the first descriptor of this completion */
 690         curr_frag_len = min(pktsize, rx_frag_size);
 691
 692         /* Copy the header portion into skb_data */
 693         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 694         memcpy(skb->data, start, hdr_len);
 695         skb->len = curr_frag_len;
 696         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 697                 /* Complete packet has now been moved to data */
 698                 put_page(page_info->page);
 699                 skb->data_len = 0;
 700                 skb->tail += curr_frag_len;
 701         } else {
 702                 skb_shinfo(skb)->nr_frags = 1;
 703                 skb_shinfo(skb)->frags[0].page = page_info->page;
 704                 skb_shinfo(skb)->frags[0].page_offset =
 705                                         page_info->page_offset + hdr_len;
 706                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 707                 skb->data_len = curr_frag_len - hdr_len;
 708                 skb->tail += hdr_len;
 709         }
 710         page_info->page = NULL;
 711
 712         if (pktsize <= rx_frag_size) {
 713                 BUG_ON(num_rcvd != 1);
 714                 goto done;
 715         }
 716
 717         /* More frags present for this completion */
 718         size = pktsize;
 719         for (i = 1, j = 0; i < num_rcvd; i++) {
 720                 size -= curr_frag_len;
 721                 index_inc(&rxq_idx, rxq->len);
 722                 page_info = get_rx_page_info(adapter, rxq_idx);
 723
 724                 curr_frag_len = min(size, rx_frag_size);
 725
 726                 /* Coalesce all frags from the same physical page in one slot */
 727                 if (page_info->page_offset == 0) {
 728                         /* Fresh page */
 729                         j++;
 730                         skb_shinfo(skb)->frags[j].page = page_info->page;
 731                         skb_shinfo(skb)->frags[j].page_offset =
 732                                                         page_info->page_offset;
 733                         skb_shinfo(skb)->frags[j].size = 0;
 734                         skb_shinfo(skb)->nr_frags++;
 735                 } else {
 736                         put_page(page_info->page);
 737                 }
 738
 739                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 740                 skb->len += curr_frag_len;
 741                 skb->data_len += curr_frag_len;
 742
 743                 page_info->page = NULL;
 744         }
 745         BUG_ON(j > MAX_SKB_FRAGS);
 746
 747 done:
 748         be_rx_stats_update(adapter, pktsize, num_rcvd);
 749         return;
 750 }
 751
 752 /* Process the RX completion indicated by rxcp when GRO is disabled */
 753 static void be_rx_compl_process(struct be_adapter *adapter,
 754                         struct be_eth_rx_compl *rxcp)
 755 {
 756         struct sk_buff *skb;
 757         u32 vlanf, vid;
 758         u8 vtm;
 759
 760         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 761         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 762
 763         /* vlanf could be wrongly set in some cards.
 764          * ignore if vtm is not set */
 765         if ((adapter->cap & 0x400) && !vtm)
 766                 vlanf = 0;
 767
 768         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 769         if (!skb) {
 770                 if (net_ratelimit())
 771                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 772                 be_rx_compl_discard(adapter, rxcp);
 773                 return;
 774         }
 775
 776         skb_fill_rx_data(adapter, skb, rxcp);
 777
 778         if (do_pkt_csum(rxcp, adapter->rx_csum))
 779                 skb->ip_summed = CHECKSUM_NONE;
 780         else
 781                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 782
 783         skb->truesize = skb->len + sizeof(struct sk_buff);
 784         skb->protocol = eth_type_trans(skb, adapter->netdev);
 785         skb->dev = adapter->netdev;
 786
 787         if (vlanf) {
 788                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 789                         kfree_skb(skb);
 790                         return;
 791                 }
 792                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 793                 vid = be16_to_cpu(vid);
 794                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 795         } else {
 796                 netif_receive_skb(skb);
 797         }
 798
 799         return;
 800 }
 801
 802 /* Process the RX completion indicated by rxcp when GRO is enabled */
 803 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 804                         struct be_eth_rx_compl *rxcp)
 805 {
 806         struct be_rx_page_info *page_info;
 807         struct sk_buff *skb = NULL;
 808         struct be_queue_info *rxq = &adapter->rx_obj.q;
 809         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 810         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 811         u16 i, rxq_idx = 0, vid, j;
 812         u8 vtm;
 813
 814         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 815         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 816         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 817         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 818         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 819
 820         /* vlanf could be wrongly set in some cards.
 821          * ignore if vtm is not set */
 822         if ((adapter->cap & 0x400) && !vtm)
 823                 vlanf = 0;
 824
 825         skb = napi_get_frags(&eq_obj->napi);
 826         if (!skb) {
 827                 be_rx_compl_discard(adapter, rxcp);
 828                 return;
 829         }
 830
 831         remaining = pkt_size;
 832         for (i = 0, j = -1; i < num_rcvd; i++) {
 833                 page_info = get_rx_page_info(adapter, rxq_idx);
 834
 835                 curr_frag_len = min(remaining, rx_frag_size);
 836
 837                 /* Coalesce all frags from the same physical page in one slot */
 838                 if (i == 0 || page_info->page_offset == 0) {
 839                         /* First frag or Fresh page */
 840                         j++;
 841                         skb_shinfo(skb)->frags[j].page = page_info->page;
 842                         skb_shinfo(skb)->frags[j].page_offset =
 843                                                         page_info->page_offset;
 844                         skb_shinfo(skb)->frags[j].size = 0;
 845                 } else {
 846                         put_page(page_info->page);
 847                 }
 848                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 849
 850                 remaining -= curr_frag_len;
 851                 index_inc(&rxq_idx, rxq->len);
 852                 memset(page_info, 0, sizeof(*page_info));
 853         }
 854         BUG_ON(j > MAX_SKB_FRAGS);
 855
 856         skb_shinfo(skb)->nr_frags = j + 1;
 857         skb->len = pkt_size;
 858         skb->data_len = pkt_size;
 859         skb->truesize += pkt_size;
 860         skb->ip_summed = CHECKSUM_UNNECESSARY;
 861
 862         if (likely(!vlanf)) {
 863                 napi_gro_frags(&eq_obj->napi);
 864         } else {
 865                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 866                 vid = be16_to_cpu(vid);
 867
 868                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 869                         return;
 870
 871                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 872         }
 873
 874         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 875         return;
 876 }
 877
 878 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 879 {
 880         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 881
 882         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 883                 return NULL;
 884
 885         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 886
 887         queue_tail_inc(&adapter->rx_obj.cq);
 888         return rxcp;
 889 }
 890
 891 /* To reset the valid bit, we need to reset the whole word as
 892  * when walking the queue the valid entries are little-endian
 893  * and invalid entries are host endian
 894  */
 895 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 896 {
 897         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 898 }
 899
 900 static inline struct page *be_alloc_pages(u32 size)
 901 {
 902         gfp_t alloc_flags = GFP_ATOMIC;
 903         u32 order = get_order(size);
 904         if (order > 0)
 905                 alloc_flags |= __GFP_COMP;
 906         return  alloc_pages(alloc_flags, order);
 907 }
 908
 909 /*
 910  * Allocate a page, split it to fragments of size rx_frag_size and post as
 911  * receive buffers to BE
 912  */
 913 static void be_post_rx_frags(struct be_adapter *adapter)
 914 {
 915         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 916         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 917         struct be_queue_info *rxq = &adapter->rx_obj.q;
 918         struct page *pagep = NULL;
 919         struct be_eth_rx_d *rxd;
 920         u64 page_dmaaddr = 0, frag_dmaaddr;
 921         u32 posted, page_offset = 0;
 922
 923         page_info = &page_info_tbl[rxq->head];
 924         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 925                 if (!pagep) {
 926                         pagep = be_alloc_pages(adapter->big_page_size);
 927                         if (unlikely(!pagep)) {
 928                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 929                                 break;
 930                         }
 931                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 932                                                 adapter->big_page_size,
 933                                                 PCI_DMA_FROMDEVICE);
 934                         page_info->page_offset = 0;
 935                 } else {
 936                         get_page(pagep);
 937                         page_info->page_offset = page_offset + rx_frag_size;
 938                 }
 939                 page_offset = page_info->page_offset;
 940                 page_info->page = pagep;
 941                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 942                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 943
 944                 rxd = queue_head_node(rxq);
 945                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 946                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 947
 948                 /* Any space left in the current big page for another frag? */
 949                 if ((page_offset + rx_frag_size + rx_frag_size) >
 950                                         adapter->big_page_size) {
 951                         pagep = NULL;
 952                         page_info->last_page_user = true;
 953                 }
 954
 955                 prev_page_info = page_info;
 956                 queue_head_inc(rxq);
 957                 page_info = &page_info_tbl[rxq->head];
 958         }
 959         if (pagep)
 960                 prev_page_info->last_page_user = true;
 961
 962         if (posted) {
 963                 atomic_add(posted, &rxq->used);
 964                 be_rxq_notify(adapter, rxq->id, posted);
 965         } else if (atomic_read(&rxq->used) == 0) {
 966                 /* Let be_worker replenish when memory is available */
 967                 adapter->rx_post_starved = true;
 968         }
 969
 970         return;
 971 }
 972
 973 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 974 {
 975         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 976
 977         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 978                 return NULL;
 979
 980         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 981
 982         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 983
 984         queue_tail_inc(tx_cq);
 985         return txcp;
 986 }
 987
 988 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 989 {
 990         struct be_queue_info *txq = &adapter->tx_obj.q;
 991         struct be_eth_wrb *wrb;
 992         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 993         struct sk_buff *sent_skb;
 994         u64 busaddr;
 995         u16 cur_index, num_wrbs = 0;
 996
 997         cur_index = txq->tail;
 998         sent_skb = sent_skbs[cur_index];
 999         BUG_ON(!sent_skb);
1000         sent_skbs[cur_index] = NULL;
1001         wrb = queue_tail_node(txq);
1002         be_dws_le_to_cpu(wrb, sizeof(*wrb));
1003         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1004         if (busaddr != 0) {
1005                 pci_unmap_single(adapter->pdev, busaddr,
1006                                  wrb->frag_len, PCI_DMA_TODEVICE);
1007         }
1008         num_wrbs++;
1009         queue_tail_inc(txq);
1010
1011         while (cur_index != last_index) {
1012                 cur_index = txq->tail;
1013                 wrb = queue_tail_node(txq);
1014                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1015                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1016                 if (busaddr != 0) {
1017                         pci_unmap_page(adapter->pdev, busaddr,
1018                                        wrb->frag_len, PCI_DMA_TODEVICE);
1019                 }
1020                 num_wrbs++;
1021                 queue_tail_inc(txq);
1022         }
1023
1024         atomic_sub(num_wrbs, &txq->used);
1025
1026         kfree_skb(sent_skb);
1027 }
1028
1029 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1030 {
1031         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1032
1033         if (!eqe->evt)
1034                 return NULL;
1035
1036         eqe->evt = le32_to_cpu(eqe->evt);
1037         queue_tail_inc(&eq_obj->q);
1038         return eqe;
1039 }
1040
1041 static int event_handle(struct be_adapter *adapter,
1042                         struct be_eq_obj *eq_obj)
1043 {
1044         struct be_eq_entry *eqe;
1045         u16 num = 0;
1046
1047         while ((eqe = event_get(eq_obj)) != NULL) {
1048                 eqe->evt = 0;
1049                 num++;
1050         }
1051
1052         /* Deal with any spurious interrupts that come
1053          * without events
1054          */
1055         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1056         if (num)
1057                 napi_schedule(&eq_obj->napi);
1058
1059         return num;
1060 }
1061
1062 /* Just read and notify events without processing them.
1063  * Used at the time of destroying event queues */
1064 static void be_eq_clean(struct be_adapter *adapter,
1065                         struct be_eq_obj *eq_obj)
1066 {
1067         struct be_eq_entry *eqe;
1068         u16 num = 0;
1069
1070         while ((eqe = event_get(eq_obj)) != NULL) {
1071                 eqe->evt = 0;
1072                 num++;
1073         }
1074
1075         if (num)
1076                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1077 }
1078
1079 static void be_rx_q_clean(struct be_adapter *adapter)
1080 {
1081         struct be_rx_page_info *page_info;
1082         struct be_queue_info *rxq = &adapter->rx_obj.q;
1083         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1084         struct be_eth_rx_compl *rxcp;
1085         u16 tail;
1086
1087         /* First cleanup pending rx completions */
1088         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1089                 be_rx_compl_discard(adapter, rxcp);
1090                 be_rx_compl_reset(rxcp);
1091                 be_cq_notify(adapter, rx_cq->id, true, 1);
1092         }
1093
1094         /* Then free posted rx buffer that were not used */
1095         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1096         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1097                 page_info = get_rx_page_info(adapter, tail);
1098                 put_page(page_info->page);
1099                 memset(page_info, 0, sizeof(*page_info));
1100         }
1101         BUG_ON(atomic_read(&rxq->used));
1102 }
1103
1104 static void be_tx_compl_clean(struct be_adapter *adapter)
1105 {
1106         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1107         struct be_queue_info *txq = &adapter->tx_obj.q;
1108         struct be_eth_tx_compl *txcp;
1109         u16 end_idx, cmpl = 0, timeo = 0;
1110
1111         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1112         do {
1113                 while ((txcp = be_tx_compl_get(tx_cq))) {
1114                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1115                                         wrb_index, txcp);
1116                         be_tx_compl_process(adapter, end_idx);
1117                         cmpl++;
1118                 }
1119                 if (cmpl) {
1120                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1121                         cmpl = 0;
1122                 }
1123
1124                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1125                         break;
1126
1127                 mdelay(1);
1128         } while (true);
1129
1130         if (atomic_read(&txq->used))
1131                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1132                         atomic_read(&txq->used));
1133 }
1134
1135 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1136 {
1137         struct be_queue_info *q;
1138
1139         q = &adapter->mcc_obj.q;
1140         if (q->created)
1141                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1142         be_queue_free(adapter, q);
1143
1144         q = &adapter->mcc_obj.cq;
1145         if (q->created)
1146                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1147         be_queue_free(adapter, q);
1148 }
1149
1150 /* Must be called only after TX qs are created as MCC shares TX EQ */
1151 static int be_mcc_queues_create(struct be_adapter *adapter)
1152 {
1153         struct be_queue_info *q, *cq;
1154
1155         /* Alloc MCC compl queue */
1156         cq = &adapter->mcc_obj.cq;
1157         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1158                         sizeof(struct be_mcc_compl)))
1159                 goto err;
1160
1161         /* Ask BE to create MCC compl queue; share TX's eq */
1162         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1163                 goto mcc_cq_free;
1164
1165         /* Alloc MCC queue */
1166         q = &adapter->mcc_obj.q;
1167         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1168                 goto mcc_cq_destroy;
1169
1170         /* Ask BE to create MCC queue */
1171         if (be_cmd_mccq_create(adapter, q, cq))
1172                 goto mcc_q_free;
1173
1174         return 0;
1175
1176 mcc_q_free:
1177         be_queue_free(adapter, q);
1178 mcc_cq_destroy:
1179         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1180 mcc_cq_free:
1181         be_queue_free(adapter, cq);
1182 err:
1183         return -1;
1184 }
1185
1186 static void be_tx_queues_destroy(struct be_adapter *adapter)
1187 {
1188         struct be_queue_info *q;
1189
1190         q = &adapter->tx_obj.q;
1191         if (q->created)
1192                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1193         be_queue_free(adapter, q);
1194
1195         q = &adapter->tx_obj.cq;
1196         if (q->created)
1197                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1198         be_queue_free(adapter, q);
1199
1200         /* Clear any residual events */
1201         be_eq_clean(adapter, &adapter->tx_eq);
1202
1203         q = &adapter->tx_eq.q;
1204         if (q->created)
1205                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1206         be_queue_free(adapter, q);
1207 }
1208
1209 static int be_tx_queues_create(struct be_adapter *adapter)
1210 {
1211         struct be_queue_info *eq, *q, *cq;
1212
1213         adapter->tx_eq.max_eqd = 0;
1214         adapter->tx_eq.min_eqd = 0;
1215         adapter->tx_eq.cur_eqd = 96;
1216         adapter->tx_eq.enable_aic = false;
1217         /* Alloc Tx Event queue */
1218         eq = &adapter->tx_eq.q;
1219         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1220                 return -1;
1221
1222         /* Ask BE to create Tx Event queue */
1223         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1224                 goto tx_eq_free;
1225         /* Alloc TX eth compl queue */
1226         cq = &adapter->tx_obj.cq;
1227         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1228                         sizeof(struct be_eth_tx_compl)))
1229                 goto tx_eq_destroy;
1230
1231         /* Ask BE to create Tx eth compl queue */
1232         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1233                 goto tx_cq_free;
1234
1235         /* Alloc TX eth queue */
1236         q = &adapter->tx_obj.q;
1237         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1238                 goto tx_cq_destroy;
1239
1240         /* Ask BE to create Tx eth queue */
1241         if (be_cmd_txq_create(adapter, q, cq))
1242                 goto tx_q_free;
1243         return 0;
1244
1245 tx_q_free:
1246         be_queue_free(adapter, q);
1247 tx_cq_destroy:
1248         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1249 tx_cq_free:
1250         be_queue_free(adapter, cq);
1251 tx_eq_destroy:
1252         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1253 tx_eq_free:
1254         be_queue_free(adapter, eq);
1255         return -1;
1256 }
1257
1258 static void be_rx_queues_destroy(struct be_adapter *adapter)
1259 {
1260         struct be_queue_info *q;
1261
1262         q = &adapter->rx_obj.q;
1263         if (q->created) {
1264                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1265                 be_rx_q_clean(adapter);
1266         }
1267         be_queue_free(adapter, q);
1268
1269         q = &adapter->rx_obj.cq;
1270         if (q->created)
1271                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1272         be_queue_free(adapter, q);
1273
1274         /* Clear any residual events */
1275         be_eq_clean(adapter, &adapter->rx_eq);
1276
1277         q = &adapter->rx_eq.q;
1278         if (q->created)
1279                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1280         be_queue_free(adapter, q);
1281 }
1282
1283 static int be_rx_queues_create(struct be_adapter *adapter)
1284 {
1285         struct be_queue_info *eq, *q, *cq;
1286         int rc;
1287
1288         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1289         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1290         adapter->rx_eq.min_eqd = 0;
1291         adapter->rx_eq.cur_eqd = 0;
1292         adapter->rx_eq.enable_aic = true;
1293
1294         /* Alloc Rx Event queue */
1295         eq = &adapter->rx_eq.q;
1296         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1297                                 sizeof(struct be_eq_entry));
1298         if (rc)
1299                 return rc;
1300
1301         /* Ask BE to create Rx Event queue */
1302         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1303         if (rc)
1304                 goto rx_eq_free;
1305
1306         /* Alloc RX eth compl queue */
1307         cq = &adapter->rx_obj.cq;
1308         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1309                         sizeof(struct be_eth_rx_compl));
1310         if (rc)
1311                 goto rx_eq_destroy;
1312
1313         /* Ask BE to create Rx eth compl queue */
1314         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1315         if (rc)
1316                 goto rx_cq_free;
1317
1318         /* Alloc RX eth queue */
1319         q = &adapter->rx_obj.q;
1320         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1321         if (rc)
1322                 goto rx_cq_destroy;
1323
1324         /* Ask BE to create Rx eth queue */
1325         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1326                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1327         if (rc)
1328                 goto rx_q_free;
1329
1330         return 0;
1331 rx_q_free:
1332         be_queue_free(adapter, q);
1333 rx_cq_destroy:
1334         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1335 rx_cq_free:
1336         be_queue_free(adapter, cq);
1337 rx_eq_destroy:
1338         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1339 rx_eq_free:
1340         be_queue_free(adapter, eq);
1341         return rc;
1342 }
1343
1344 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1345 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1346 {
1347         return eq_id - 8 * be_pci_func(adapter);
1348 }
1349
1350 static irqreturn_t be_intx(int irq, void *dev)
1351 {
1352         struct be_adapter *adapter = dev;
1353         int isr;
1354
1355         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1356                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1357         if (!isr)
1358                 return IRQ_NONE;
1359
1360         event_handle(adapter, &adapter->tx_eq);
1361         event_handle(adapter, &adapter->rx_eq);
1362
1363         return IRQ_HANDLED;
1364 }
1365
1366 static irqreturn_t be_msix_rx(int irq, void *dev)
1367 {
1368         struct be_adapter *adapter = dev;
1369
1370         event_handle(adapter, &adapter->rx_eq);
1371
1372         return IRQ_HANDLED;
1373 }
1374
1375 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1376 {
1377         struct be_adapter *adapter = dev;
1378
1379         event_handle(adapter, &adapter->tx_eq);
1380
1381         return IRQ_HANDLED;
1382 }
1383
1384 static inline bool do_gro(struct be_adapter *adapter,
1385                         struct be_eth_rx_compl *rxcp)
1386 {
1387         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1388         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1389
1390         if (err)
1391                 drvr_stats(adapter)->be_rxcp_err++;
1392
1393         return (tcp_frame && !err) ? true : false;
1394 }
1395
1396 int be_poll_rx(struct napi_struct *napi, int budget)
1397 {
1398         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1399         struct be_adapter *adapter =
1400                 container_of(rx_eq, struct be_adapter, rx_eq);
1401         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1402         struct be_eth_rx_compl *rxcp;
1403         u32 work_done;
1404
1405         adapter->stats.drvr_stats.be_rx_polls++;
1406         for (work_done = 0; work_done < budget; work_done++) {
1407                 rxcp = be_rx_compl_get(adapter);
1408                 if (!rxcp)
1409                         break;
1410
1411                 if (do_gro(adapter, rxcp))
1412                         be_rx_compl_process_gro(adapter, rxcp);
1413                 else
1414                         be_rx_compl_process(adapter, rxcp);
1415
1416                 be_rx_compl_reset(rxcp);
1417         }
1418
1419         /* Refill the queue */
1420         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1421                 be_post_rx_frags(adapter);
1422
1423         /* All consumed */
1424         if (work_done < budget) {
1425                 napi_complete(napi);
1426                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1427         } else {
1428                 /* More to be consumed; continue with interrupts disabled */
1429                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1430         }
1431         return work_done;
1432 }
1433
1434 void be_process_tx(struct be_adapter *adapter)
1435 {
1436         struct be_queue_info *txq = &adapter->tx_obj.q;
1437         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1438         struct be_eth_tx_compl *txcp;
1439         u32 num_cmpl = 0;
1440         u16 end_idx;
1441
1442         while ((txcp = be_tx_compl_get(tx_cq))) {
1443                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1444                                         wrb_index, txcp);
1445                 be_tx_compl_process(adapter, end_idx);
1446                 num_cmpl++;
1447         }
1448
1449         if (num_cmpl) {
1450                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1451
1452                 /* As Tx wrbs have been freed up, wake up netdev queue if
1453                  * it was stopped due to lack of tx wrbs.
1454                  */
1455                 if (netif_queue_stopped(adapter->netdev) &&
1456                         atomic_read(&txq->used) < txq->len / 2) {
1457                         netif_wake_queue(adapter->netdev);
1458                 }
1459
1460                 drvr_stats(adapter)->be_tx_events++;
1461                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1462         }
1463 }
1464
1465 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1466  * For TX/MCC we don't honour budget; consume everything
1467  */
1468 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1469 {
1470         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1471         struct be_adapter *adapter =
1472                 container_of(tx_eq, struct be_adapter, tx_eq);
1473
1474         napi_complete(napi);
1475
1476         be_process_tx(adapter);
1477
1478         be_process_mcc(adapter);
1479
1480         return 1;
1481 }
1482
1483 static void be_worker(struct work_struct *work)
1484 {
1485         struct be_adapter *adapter =
1486                 container_of(work, struct be_adapter, work.work);
1487
1488         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1489
1490         /* Set EQ delay */
1491         be_rx_eqd_update(adapter);
1492
1493         be_tx_rate_update(adapter);
1494         be_rx_rate_update(adapter);
1495
1496         if (adapter->rx_post_starved) {
1497                 adapter->rx_post_starved = false;
1498                 be_post_rx_frags(adapter);
1499         }
1500
1501         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1502 }
1503
1504 static void be_msix_disable(struct be_adapter *adapter)
1505 {
1506         if (adapter->msix_enabled) {
1507                 pci_disable_msix(adapter->pdev);
1508                 adapter->msix_enabled = false;
1509         }
1510 }
1511
1512 static void be_msix_enable(struct be_adapter *adapter)
1513 {
1514         int i, status;
1515
1516         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1517                 adapter->msix_entries[i].entry = i;
1518
1519         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1520                 BE_NUM_MSIX_VECTORS);
1521         if (status == 0)
1522                 adapter->msix_enabled = true;
1523         return;
1524 }
1525
1526 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1527 {
1528         return adapter->msix_entries[
1529                         be_evt_bit_get(adapter, eq_id)].vector;
1530 }
1531
1532 static int be_request_irq(struct be_adapter *adapter,
1533                 struct be_eq_obj *eq_obj,
1534                 void *handler, char *desc)
1535 {
1536         struct net_device *netdev = adapter->netdev;
1537         int vec;
1538
1539         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1540         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1541         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1542 }
1543
1544 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1545 {
1546         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1547         free_irq(vec, adapter);
1548 }
1549
1550 static int be_msix_register(struct be_adapter *adapter)
1551 {
1552         int status;
1553
1554         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1555         if (status)
1556                 goto err;
1557
1558         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1559         if (status)
1560                 goto free_tx_irq;
1561
1562         return 0;
1563
1564 free_tx_irq:
1565         be_free_irq(adapter, &adapter->tx_eq);
1566 err:
1567         dev_warn(&adapter->pdev->dev,
1568                 "MSIX Request IRQ failed - err %d\n", status);
1569         pci_disable_msix(adapter->pdev);
1570         adapter->msix_enabled = false;
1571         return status;
1572 }
1573
1574 static int be_irq_register(struct be_adapter *adapter)
1575 {
1576         struct net_device *netdev = adapter->netdev;
1577         int status;
1578
1579         if (adapter->msix_enabled) {
1580                 status = be_msix_register(adapter);
1581                 if (status == 0)
1582                         goto done;
1583         }
1584
1585         /* INTx */
1586         netdev->irq = adapter->pdev->irq;
1587         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1588                         adapter);
1589         if (status) {
1590                 dev_err(&adapter->pdev->dev,
1591                         "INTx request IRQ failed - err %d\n", status);
1592                 return status;
1593         }
1594 done:
1595         adapter->isr_registered = true;
1596         return 0;
1597 }
1598
1599 static void be_irq_unregister(struct be_adapter *adapter)
1600 {
1601         struct net_device *netdev = adapter->netdev;
1602
1603         if (!adapter->isr_registered)
1604                 return;
1605
1606         /* INTx */
1607         if (!adapter->msix_enabled) {
1608                 free_irq(netdev->irq, adapter);
1609                 goto done;
1610         }
1611
1612         /* MSIx */
1613         be_free_irq(adapter, &adapter->tx_eq);
1614         be_free_irq(adapter, &adapter->rx_eq);
1615 done:
1616         adapter->isr_registered = false;
1617         return;
1618 }
1619
1620 static int be_open(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         bool link_up;
1626         int status;
1627         u8 mac_speed;
1628         u16 link_speed;
1629
1630         /* First time posting */
1631         be_post_rx_frags(adapter);
1632
1633         napi_enable(&rx_eq->napi);
1634         napi_enable(&tx_eq->napi);
1635
1636         be_irq_register(adapter);
1637
1638         be_intr_set(adapter, true);
1639
1640         /* The evt queues are created in unarmed state; arm them */
1641         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1642         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1643
1644         /* Rx compl queue may be in unarmed state; rearm it */
1645         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1646
1647         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1648                         &link_speed);
1649         if (status)
1650                 goto ret_sts;
1651         be_link_status_update(adapter, link_up);
1652
1653         status = be_vid_config(adapter);
1654         if (status)
1655                 goto ret_sts;
1656
1657         status = be_cmd_set_flow_control(adapter,
1658                                         adapter->tx_fc, adapter->rx_fc);
1659         if (status)
1660                 goto ret_sts;
1661
1662         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1663 ret_sts:
1664         return status;
1665 }
1666
1667 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1668 {
1669         struct be_dma_mem cmd;
1670         int status = 0;
1671         u8 mac[ETH_ALEN];
1672
1673         memset(mac, 0, ETH_ALEN);
1674
1675         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1676         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1677         if (cmd.va == NULL)
1678                 return -1;
1679         memset(cmd.va, 0, cmd.size);
1680
1681         if (enable) {
1682                 status = pci_write_config_dword(adapter->pdev,
1683                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1684                 if (status) {
1685                         dev_err(&adapter->pdev->dev,
1686                                 "Could not enable Wake-on-lan \n");
1687                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1688                                         cmd.dma);
1689                         return status;
1690                 }
1691                 status = be_cmd_enable_magic_wol(adapter,
1692                                 adapter->netdev->dev_addr, &cmd);
1693                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1694                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1695         } else {
1696                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1697                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1698                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1699         }
1700
1701         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1702         return status;
1703 }
1704
1705 static int be_setup(struct be_adapter *adapter)
1706 {
1707         struct net_device *netdev = adapter->netdev;
1708         u32 cap_flags, en_flags;
1709         int status;
1710
1711         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1712                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1713                         BE_IF_FLAGS_PROMISCUOUS |
1714                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1715         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1716                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1717
1718         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1719                         netdev->dev_addr, false/* pmac_invalid */,
1720                         &adapter->if_handle, &adapter->pmac_id);
1721         if (status != 0)
1722                 goto do_none;
1723
1724         status = be_tx_queues_create(adapter);
1725         if (status != 0)
1726                 goto if_destroy;
1727
1728         status = be_rx_queues_create(adapter);
1729         if (status != 0)
1730                 goto tx_qs_destroy;
1731
1732         status = be_mcc_queues_create(adapter);
1733         if (status != 0)
1734                 goto rx_qs_destroy;
1735
1736         adapter->link_speed = -1;
1737
1738         return 0;
1739
1740 rx_qs_destroy:
1741         be_rx_queues_destroy(adapter);
1742 tx_qs_destroy:
1743         be_tx_queues_destroy(adapter);
1744 if_destroy:
1745         be_cmd_if_destroy(adapter, adapter->if_handle);
1746 do_none:
1747         return status;
1748 }
1749
1750 static int be_clear(struct be_adapter *adapter)
1751 {
1752         be_mcc_queues_destroy(adapter);
1753         be_rx_queues_destroy(adapter);
1754         be_tx_queues_destroy(adapter);
1755
1756         be_cmd_if_destroy(adapter, adapter->if_handle);
1757
1758         /* tell fw we're done with firing cmds */
1759         be_cmd_fw_clean(adapter);
1760         return 0;
1761 }
1762
1763 static int be_close(struct net_device *netdev)
1764 {
1765         struct be_adapter *adapter = netdev_priv(netdev);
1766         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1767         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1768         int vec;
1769
1770         cancel_delayed_work_sync(&adapter->work);
1771
1772         netif_stop_queue(netdev);
1773         netif_carrier_off(netdev);
1774         adapter->link_up = false;
1775
1776         be_intr_set(adapter, false);
1777
1778         if (adapter->msix_enabled) {
1779                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1780                 synchronize_irq(vec);
1781                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1782                 synchronize_irq(vec);
1783         } else {
1784                 synchronize_irq(netdev->irq);
1785         }
1786         be_irq_unregister(adapter);
1787
1788         napi_disable(&rx_eq->napi);
1789         napi_disable(&tx_eq->napi);
1790
1791         /* Wait for all pending tx completions to arrive so that
1792          * all tx skbs are freed.
1793          */
1794         be_tx_compl_clean(adapter);
1795
1796         return 0;
1797 }
1798
1799 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1800 char flash_cookie[2][16] =      {"*** SE FLAS",
1801                                 "H DIRECTORY *** "};
1802
1803 static bool be_flash_redboot(struct be_adapter *adapter,
1804                         const u8 *p, u32 img_start, int image_size,
1805                         int hdr_size)
1806 {
1807         u32 crc_offset;
1808         u8 flashed_crc[4];
1809         int status;
1810
1811         crc_offset = hdr_size + img_start + image_size - 4;
1812
1813         p += crc_offset;
1814
1815         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1816                         (img_start + image_size - 4));
1817         if (status) {
1818                 dev_err(&adapter->pdev->dev,
1819                 "could not get crc from flash, not flashing redboot\n");
1820                 return false;
1821         }
1822
1823         /*update redboot only if crc does not match*/
1824         if (!memcmp(flashed_crc, p, 4))
1825                 return false;
1826         else
1827                 return true;
1828 }
1829
1830 static int be_flash_data(struct be_adapter *adapter,
1831                         const struct firmware *fw,
1832                         struct be_dma_mem *flash_cmd, int num_of_images)
1833
1834 {
1835         int status = 0, i, filehdr_size = 0;
1836         u32 total_bytes = 0, flash_op;
1837         int num_bytes;
1838         const u8 *p = fw->data;
1839         struct be_cmd_write_flashrom *req = flash_cmd->va;
1840         struct flash_comp *pflashcomp;
1841
1842         struct flash_comp gen3_flash_types[8] = {
1843                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1844                         FLASH_IMAGE_MAX_SIZE_g3},
1845                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1846                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1847                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1848                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1849                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1850                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1851                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1852                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1853                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1854                         FLASH_IMAGE_MAX_SIZE_g3},
1855                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1856                         FLASH_IMAGE_MAX_SIZE_g3},
1857                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1858                         FLASH_IMAGE_MAX_SIZE_g3}
1859         };
1860         struct flash_comp gen2_flash_types[8] = {
1861                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1862                         FLASH_IMAGE_MAX_SIZE_g2},
1863                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1864                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1865                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1866                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1867                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1868                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1869                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1870                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1871                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1872                         FLASH_IMAGE_MAX_SIZE_g2},
1873                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1874                         FLASH_IMAGE_MAX_SIZE_g2},
1875                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1876                          FLASH_IMAGE_MAX_SIZE_g2}
1877         };
1878
1879         if (adapter->generation == BE_GEN3) {
1880                 pflashcomp = gen3_flash_types;
1881                 filehdr_size = sizeof(struct flash_file_hdr_g3);
1882         } else {
1883                 pflashcomp = gen2_flash_types;
1884                 filehdr_size = sizeof(struct flash_file_hdr_g2);
1885         }
1886         for (i = 0; i < 8; i++) {
1887                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1888                         (!be_flash_redboot(adapter, fw->data,
1889                          pflashcomp[i].offset, pflashcomp[i].size,
1890                          filehdr_size)))
1891                         continue;
1892                 p = fw->data;
1893                 p += filehdr_size + pflashcomp[i].offset
1894                         + (num_of_images * sizeof(struct image_hdr));
1895         if (p + pflashcomp[i].size > fw->data + fw->size)
1896                 return -1;
1897         total_bytes = pflashcomp[i].size;
1898                 while (total_bytes) {
1899                         if (total_bytes > 32*1024)
1900                                 num_bytes = 32*1024;
1901                         else
1902                                 num_bytes = total_bytes;
1903                         total_bytes -= num_bytes;
1904
1905                         if (!total_bytes)
1906                                 flash_op = FLASHROM_OPER_FLASH;
1907                         else
1908                                 flash_op = FLASHROM_OPER_SAVE;
1909                         memcpy(req->params.data_buf, p, num_bytes);
1910                         p += num_bytes;
1911                         status = be_cmd_write_flashrom(adapter, flash_cmd,
1912                                 pflashcomp[i].optype, flash_op, num_bytes);
1913                         if (status) {
1914                                 dev_err(&adapter->pdev->dev,
1915                                         "cmd to write to flash rom failed.\n");
1916                                 return -1;
1917                         }
1918                         yield();
1919                 }
1920         }
1921         return 0;
1922 }
1923
1924 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
1925 {
1926         if (fhdr == NULL)
1927                 return 0;
1928         if (fhdr->build[0] == '3')
1929                 return BE_GEN3;
1930         else if (fhdr->build[0] == '2')
1931                 return BE_GEN2;
1932         else
1933                 return 0;
1934 }
1935
1936 int be_load_fw(struct be_adapter *adapter, u8 *func)
1937 {
1938         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1939         const struct firmware *fw;
1940         struct flash_file_hdr_g2 *fhdr;
1941         struct flash_file_hdr_g3 *fhdr3;
1942         struct image_hdr *img_hdr_ptr = NULL;
1943         struct be_dma_mem flash_cmd;
1944         int status, i = 0;
1945         const u8 *p;
1946         char fw_ver[FW_VER_LEN];
1947         char fw_cfg;
1948
1949         status = be_cmd_get_fw_ver(adapter, fw_ver);
1950         if (status)
1951                 return status;
1952
1953         fw_cfg = *(fw_ver + 2);
1954         if (fw_cfg == '0')
1955                 fw_cfg = '1';
1956         strcpy(fw_file, func);
1957
1958         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1959         if (status)
1960                 goto fw_exit;
1961
1962         p = fw->data;
1963         fhdr = (struct flash_file_hdr_g2 *) p;
1964         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1965
1966         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1967         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1968                                         &flash_cmd.dma);
1969         if (!flash_cmd.va) {
1970                 status = -ENOMEM;
1971                 dev_err(&adapter->pdev->dev,
1972                         "Memory allocation failure while flashing\n");
1973                 goto fw_exit;
1974         }
1975
1976         if ((adapter->generation == BE_GEN3) &&
1977                         (get_ufigen_type(fhdr) == BE_GEN3)) {
1978                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
1979                 for (i = 0; i < fhdr3->num_imgs; i++) {
1980                         img_hdr_ptr = (struct image_hdr *) (fw->data +
1981                                         (sizeof(struct flash_file_hdr_g3) +
1982                                         i * sizeof(struct image_hdr)));
1983                         if (img_hdr_ptr->imageid == 1) {
1984                                 status = be_flash_data(adapter, fw,
1985                                                 &flash_cmd, fhdr3->num_imgs);
1986                         }
1987
1988                 }
1989         } else if ((adapter->generation == BE_GEN2) &&
1990                         (get_ufigen_type(fhdr) == BE_GEN2)) {
1991                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
1992         } else {
1993                 dev_err(&adapter->pdev->dev,
1994                         "UFI and Interface are not compatible for flashing\n");
1995                 status = -1;
1996         }
1997
1998         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1999                                 flash_cmd.dma);
2000         if (status) {
2001                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2002                 goto fw_exit;
2003         }
2004
2005         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2006
2007 fw_exit:
2008         release_firmware(fw);
2009         return status;
2010 }
2011
2012 static struct net_device_ops be_netdev_ops = {
2013         .ndo_open               = be_open,
2014         .ndo_stop               = be_close,
2015         .ndo_start_xmit         = be_xmit,
2016         .ndo_get_stats          = be_get_stats,
2017         .ndo_set_rx_mode        = be_set_multicast_list,
2018         .ndo_set_mac_address    = be_mac_addr_set,
2019         .ndo_change_mtu         = be_change_mtu,
2020         .ndo_validate_addr      = eth_validate_addr,
2021         .ndo_vlan_rx_register   = be_vlan_register,
2022         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2023         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2024 };
2025
2026 static void be_netdev_init(struct net_device *netdev)
2027 {
2028         struct be_adapter *adapter = netdev_priv(netdev);
2029
2030         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2031                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2032                 NETIF_F_GRO;
2033
2034         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2035
2036         netdev->flags |= IFF_MULTICAST;
2037
2038         adapter->rx_csum = true;
2039
2040         /* Default settings for Rx and Tx flow control */
2041         adapter->rx_fc = true;
2042         adapter->tx_fc = true;
2043
2044         netif_set_gso_max_size(netdev, 65535);
2045
2046         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2047
2048         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2049
2050         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2051                 BE_NAPI_WEIGHT);
2052         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2053                 BE_NAPI_WEIGHT);
2054
2055         netif_carrier_off(netdev);
2056         netif_stop_queue(netdev);
2057 }
2058
2059 static void be_unmap_pci_bars(struct be_adapter *adapter)
2060 {
2061         if (adapter->csr)
2062                 iounmap(adapter->csr);
2063         if (adapter->db)
2064                 iounmap(adapter->db);
2065         if (adapter->pcicfg)
2066                 iounmap(adapter->pcicfg);
2067 }
2068
2069 static int be_map_pci_bars(struct be_adapter *adapter)
2070 {
2071         u8 __iomem *addr;
2072         int pcicfg_reg;
2073
2074         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2075                         pci_resource_len(adapter->pdev, 2));
2076         if (addr == NULL)
2077                 return -ENOMEM;
2078         adapter->csr = addr;
2079
2080         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2081                         128 * 1024);
2082         if (addr == NULL)
2083                 goto pci_map_err;
2084         adapter->db = addr;
2085
2086         if (adapter->generation == BE_GEN2)
2087                 pcicfg_reg = 1;
2088         else
2089                 pcicfg_reg = 0;
2090
2091         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2092                         pci_resource_len(adapter->pdev, pcicfg_reg));
2093         if (addr == NULL)
2094                 goto pci_map_err;
2095         adapter->pcicfg = addr;
2096
2097         return 0;
2098 pci_map_err:
2099         be_unmap_pci_bars(adapter);
2100         return -ENOMEM;
2101 }
2102
2103
2104 static void be_ctrl_cleanup(struct be_adapter *adapter)
2105 {
2106         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2107
2108         be_unmap_pci_bars(adapter);
2109
2110         if (mem->va)
2111                 pci_free_consistent(adapter->pdev, mem->size,
2112                         mem->va, mem->dma);
2113
2114         mem = &adapter->mc_cmd_mem;
2115         if (mem->va)
2116                 pci_free_consistent(adapter->pdev, mem->size,
2117                         mem->va, mem->dma);
2118 }
2119
2120 static int be_ctrl_init(struct be_adapter *adapter)
2121 {
2122         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2123         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2124         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2125         int status;
2126
2127         status = be_map_pci_bars(adapter);
2128         if (status)
2129                 goto done;
2130
2131         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2132         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2133                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2134         if (!mbox_mem_alloc->va) {
2135                 status = -ENOMEM;
2136                 goto unmap_pci_bars;
2137         }
2138
2139         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2140         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2141         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2142         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2143
2144         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2145         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2146                         &mc_cmd_mem->dma);
2147         if (mc_cmd_mem->va == NULL) {
2148                 status = -ENOMEM;
2149                 goto free_mbox;
2150         }
2151         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2152
2153         spin_lock_init(&adapter->mbox_lock);
2154         spin_lock_init(&adapter->mcc_lock);
2155         spin_lock_init(&adapter->mcc_cq_lock);
2156
2157         return 0;
2158
2159 free_mbox:
2160         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2161                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2162
2163 unmap_pci_bars:
2164         be_unmap_pci_bars(adapter);
2165
2166 done:
2167         return status;
2168 }
2169
2170 static void be_stats_cleanup(struct be_adapter *adapter)
2171 {
2172         struct be_stats_obj *stats = &adapter->stats;
2173         struct be_dma_mem *cmd = &stats->cmd;
2174
2175         if (cmd->va)
2176                 pci_free_consistent(adapter->pdev, cmd->size,
2177                         cmd->va, cmd->dma);
2178 }
2179
2180 static int be_stats_init(struct be_adapter *adapter)
2181 {
2182         struct be_stats_obj *stats = &adapter->stats;
2183         struct be_dma_mem *cmd = &stats->cmd;
2184
2185         cmd->size = sizeof(struct be_cmd_req_get_stats);
2186         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2187         if (cmd->va == NULL)
2188                 return -1;
2189         memset(cmd->va, 0, cmd->size);
2190         return 0;
2191 }
2192
2193 static void __devexit be_remove(struct pci_dev *pdev)
2194 {
2195         struct be_adapter *adapter = pci_get_drvdata(pdev);
2196
2197         if (!adapter)
2198                 return;
2199
2200         unregister_netdev(adapter->netdev);
2201
2202         be_clear(adapter);
2203
2204         be_stats_cleanup(adapter);
2205
2206         be_ctrl_cleanup(adapter);
2207
2208         be_msix_disable(adapter);
2209
2210         pci_set_drvdata(pdev, NULL);
2211         pci_release_regions(pdev);
2212         pci_disable_device(pdev);
2213
2214         free_netdev(adapter->netdev);
2215 }
2216
2217 static int be_get_config(struct be_adapter *adapter)
2218 {
2219         int status;
2220         u8 mac[ETH_ALEN];
2221
2222         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2223         if (status)
2224                 return status;
2225
2226         status = be_cmd_query_fw_cfg(adapter,
2227                                 &adapter->port_num, &adapter->cap);
2228         if (status)
2229                 return status;
2230
2231         memset(mac, 0, ETH_ALEN);
2232         status = be_cmd_mac_addr_query(adapter, mac,
2233                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2234         if (status)
2235                 return status;
2236
2237         if (!is_valid_ether_addr(mac))
2238                 return -EADDRNOTAVAIL;
2239
2240         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2241         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2242
2243         if (adapter->cap & 0x400)
2244                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2245         else
2246                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2247
2248         return 0;
2249 }
2250
2251 static int __devinit be_probe(struct pci_dev *pdev,
2252                         const struct pci_device_id *pdev_id)
2253 {
2254         int status = 0;
2255         struct be_adapter *adapter;
2256         struct net_device *netdev;
2257
2258         status = pci_enable_device(pdev);
2259         if (status)
2260                 goto do_none;
2261
2262         status = pci_request_regions(pdev, DRV_NAME);
2263         if (status)
2264                 goto disable_dev;
2265         pci_set_master(pdev);
2266
2267         netdev = alloc_etherdev(sizeof(struct be_adapter));
2268         if (netdev == NULL) {
2269                 status = -ENOMEM;
2270                 goto rel_reg;
2271         }
2272         adapter = netdev_priv(netdev);
2273
2274         switch (pdev->device) {
2275         case BE_DEVICE_ID1:
2276         case OC_DEVICE_ID1:
2277                 adapter->generation = BE_GEN2;
2278                 break;
2279         case BE_DEVICE_ID2:
2280         case OC_DEVICE_ID2:
2281                 adapter->generation = BE_GEN3;
2282                 break;
2283         default:
2284                 adapter->generation = 0;
2285         }
2286
2287         adapter->pdev = pdev;
2288         pci_set_drvdata(pdev, adapter);
2289         adapter->netdev = netdev;
2290         be_netdev_init(netdev);
2291         SET_NETDEV_DEV(netdev, &pdev->dev);
2292
2293         be_msix_enable(adapter);
2294
2295         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2296         if (!status) {
2297                 netdev->features |= NETIF_F_HIGHDMA;
2298         } else {
2299                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2300                 if (status) {
2301                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2302                         goto free_netdev;
2303                 }
2304         }
2305
2306         status = be_ctrl_init(adapter);
2307         if (status)
2308                 goto free_netdev;
2309
2310         /* sync up with fw's ready state */
2311         status = be_cmd_POST(adapter);
2312         if (status)
2313                 goto ctrl_clean;
2314
2315         /* tell fw we're ready to fire cmds */
2316         status = be_cmd_fw_init(adapter);
2317         if (status)
2318                 goto ctrl_clean;
2319
2320         status = be_cmd_reset_function(adapter);
2321         if (status)
2322                 goto ctrl_clean;
2323
2324         status = be_stats_init(adapter);
2325         if (status)
2326                 goto ctrl_clean;
2327
2328         status = be_get_config(adapter);
2329         if (status)
2330                 goto stats_clean;
2331
2332         INIT_DELAYED_WORK(&adapter->work, be_worker);
2333
2334         status = be_setup(adapter);
2335         if (status)
2336                 goto stats_clean;
2337
2338         status = register_netdev(netdev);
2339         if (status != 0)
2340                 goto unsetup;
2341
2342         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2343         return 0;
2344
2345 unsetup:
2346         be_clear(adapter);
2347 stats_clean:
2348         be_stats_cleanup(adapter);
2349 ctrl_clean:
2350         be_ctrl_cleanup(adapter);
2351 free_netdev:
2352         be_msix_disable(adapter);
2353         free_netdev(adapter->netdev);
2354         pci_set_drvdata(pdev, NULL);
2355 rel_reg:
2356         pci_release_regions(pdev);
2357 disable_dev:
2358         pci_disable_device(pdev);
2359 do_none:
2360         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2361         return status;
2362 }
2363
2364 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2365 {
2366         struct be_adapter *adapter = pci_get_drvdata(pdev);
2367         struct net_device *netdev =  adapter->netdev;
2368
2369         if (adapter->wol)
2370                 be_setup_wol(adapter, true);
2371
2372         netif_device_detach(netdev);
2373         if (netif_running(netdev)) {
2374                 rtnl_lock();
2375                 be_close(netdev);
2376                 rtnl_unlock();
2377         }
2378         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2379         be_clear(adapter);
2380
2381         pci_save_state(pdev);
2382         pci_disable_device(pdev);
2383         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2384         return 0;
2385 }
2386
2387 static int be_resume(struct pci_dev *pdev)
2388 {
2389         int status = 0;
2390         struct be_adapter *adapter = pci_get_drvdata(pdev);
2391         struct net_device *netdev =  adapter->netdev;
2392
2393         netif_device_detach(netdev);
2394
2395         status = pci_enable_device(pdev);
2396         if (status)
2397                 return status;
2398
2399         pci_set_power_state(pdev, 0);
2400         pci_restore_state(pdev);
2401
2402         /* tell fw we're ready to fire cmds */
2403         status = be_cmd_fw_init(adapter);
2404         if (status)
2405                 return status;
2406
2407         be_setup(adapter);
2408         if (netif_running(netdev)) {
2409                 rtnl_lock();
2410                 be_open(netdev);
2411                 rtnl_unlock();
2412         }
2413         netif_device_attach(netdev);
2414
2415         if (adapter->wol)
2416                 be_setup_wol(adapter, false);
2417         return 0;
2418 }
2419
2420 static struct pci_driver be_driver = {
2421         .name = DRV_NAME,
2422         .id_table = be_dev_ids,
2423         .probe = be_probe,
2424         .remove = be_remove,
2425         .suspend = be_suspend,
2426         .resume = be_resume
2427 };
2428
2429 static int __init be_init_module(void)
2430 {
2431         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2432             rx_frag_size != 2048) {
2433                 printk(KERN_WARNING DRV_NAME
2434                         " : Module param rx_frag_size must be 2048/4096/8192."
2435                         " Using 2048\n");
2436                 rx_frag_size = 2048;
2437         }
2438
2439         return pci_register_driver(&be_driver);
2440 }
2441 module_init(be_init_module);
2442
2443 static void __exit be_exit_module(void)
2444 {
2445         pci_unregister_driver(&be_driver);
2446 }
2447 module_exit(be_exit_module);