SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2009 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  36         { 0 }
  37 };
  38 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  39
  40 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  41 {
  42         struct be_dma_mem *mem = &q->dma_mem;
  43         if (mem->va)
  44                 pci_free_consistent(adapter->pdev, mem->size,
  45                         mem->va, mem->dma);
  46 }
  47
  48 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  49                 u16 len, u16 entry_size)
  50 {
  51         struct be_dma_mem *mem = &q->dma_mem;
  52
  53         memset(q, 0, sizeof(*q));
  54         q->len = len;
  55         q->entry_size = entry_size;
  56         mem->size = len * entry_size;
  57         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  58         if (!mem->va)
  59                 return -1;
  60         memset(mem->va, 0, mem->size);
  61         return 0;
  62 }
  63
  64 static void be_intr_set(struct be_adapter *adapter, bool enable)
  65 {
  66         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  67         u32 reg = ioread32(addr);
  68         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  69
  70         if (!enabled && enable)
  71                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  72         else if (enabled && !enable)
  73                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  74         else
  75                 return;
  76
  77         iowrite32(reg, addr);
  78 }
  79
  80 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  81 {
  82         u32 val = 0;
  83         val |= qid & DB_RQ_RING_ID_MASK;
  84         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  85         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  86 }
  87
  88 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  89 {
  90         u32 val = 0;
  91         val |= qid & DB_TXULP_RING_ID_MASK;
  92         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  93         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  94 }
  95
  96 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  97                 bool arm, bool clear_int, u16 num_popped)
  98 {
  99         u32 val = 0;
 100         val |= qid & DB_EQ_RING_ID_MASK;
 101         if (arm)
 102                 val |= 1 << DB_EQ_REARM_SHIFT;
 103         if (clear_int)
 104                 val |= 1 << DB_EQ_CLR_SHIFT;
 105         val |= 1 << DB_EQ_EVNT_SHIFT;
 106         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 107         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 108 }
 109
 110 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 111 {
 112         u32 val = 0;
 113         val |= qid & DB_CQ_RING_ID_MASK;
 114         if (arm)
 115                 val |= 1 << DB_CQ_REARM_SHIFT;
 116         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 117         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 118 }
 119
 120
 121 static int be_mac_addr_set(struct net_device *netdev, void *p)
 122 {
 123         struct be_adapter *adapter = netdev_priv(netdev);
 124         struct sockaddr *addr = p;
 125         int status = 0;
 126
 127         if (netif_running(netdev)) {
 128                 status = be_cmd_pmac_del(adapter, adapter->if_handle,
 129                                 adapter->pmac_id);
 130                 if (status)
 131                         return status;
 132
 133                 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 134                                 adapter->if_handle, &adapter->pmac_id);
 135         }
 136
 137         if (!status)
 138                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 139
 140         return status;
 141 }
 142
 143 static void netdev_stats_update(struct be_adapter *adapter)
 144 {
 145         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 146         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 147         struct be_port_rxf_stats *port_stats =
 148                         &rxf_stats->port[adapter->port_num];
 149         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 150         struct be_erx_stats *erx_stats = &hw_stats->erx;
 151
 152         dev_stats->rx_packets = port_stats->rx_total_frames;
 153         dev_stats->tx_packets = port_stats->tx_unicastframes +
 154                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 155         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 156                                 (u64) port_stats->rx_bytes_lsd;
 157         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 158                                 (u64) port_stats->tx_bytes_lsd;
 159
 160         /* bad pkts received */
 161         dev_stats->rx_errors = port_stats->rx_crc_errors +
 162                 port_stats->rx_alignment_symbol_errors +
 163                 port_stats->rx_in_range_errors +
 164                 port_stats->rx_out_range_errors +
 165                 port_stats->rx_frame_too_long +
 166                 port_stats->rx_dropped_too_small +
 167                 port_stats->rx_dropped_too_short +
 168                 port_stats->rx_dropped_header_too_small +
 169                 port_stats->rx_dropped_tcp_length +
 170                 port_stats->rx_dropped_runt +
 171                 port_stats->rx_tcp_checksum_errs +
 172                 port_stats->rx_ip_checksum_errs +
 173                 port_stats->rx_udp_checksum_errs;
 174
 175         /*  no space in linux buffers: best possible approximation */
 176         dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
 177
 178         /* detailed rx errors */
 179         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 180                 port_stats->rx_out_range_errors +
 181                 port_stats->rx_frame_too_long;
 182
 183         /* receive ring buffer overflow */
 184         dev_stats->rx_over_errors = 0;
 185
 186         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 187
 188         /* frame alignment errors */
 189         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 190
 191         /* receiver fifo overrun */
 192         /* drops_no_pbuf is no per i/f, it's per BE card */
 193         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 194                                         port_stats->rx_input_fifo_overflow +
 195                                         rxf_stats->rx_drops_no_pbuf;
 196         /* receiver missed packetd */
 197         dev_stats->rx_missed_errors = 0;
 198
 199         /*  packet transmit problems */
 200         dev_stats->tx_errors = 0;
 201
 202         /* no space available in linux */
 203         dev_stats->tx_dropped = 0;
 204
 205         dev_stats->multicast = port_stats->tx_multicastframes;
 206         dev_stats->collisions = 0;
 207
 208         /* detailed tx_errors */
 209         dev_stats->tx_aborted_errors = 0;
 210         dev_stats->tx_carrier_errors = 0;
 211         dev_stats->tx_fifo_errors = 0;
 212         dev_stats->tx_heartbeat_errors = 0;
 213         dev_stats->tx_window_errors = 0;
 214 }
 215
 216 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 217 {
 218         struct net_device *netdev = adapter->netdev;
 219
 220         /* If link came up or went down */
 221         if (adapter->link_up != link_up) {
 222                 if (link_up) {
 223                         netif_start_queue(netdev);
 224                         netif_carrier_on(netdev);
 225                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 226                 } else {
 227                         netif_stop_queue(netdev);
 228                         netif_carrier_off(netdev);
 229                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 230                 }
 231                 adapter->link_up = link_up;
 232         }
 233 }
 234
 235 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 236 static void be_rx_eqd_update(struct be_adapter *adapter)
 237 {
 238         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 239         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 240         ulong now = jiffies;
 241         u32 eqd;
 242
 243         if (!rx_eq->enable_aic)
 244                 return;
 245
 246         /* Wrapped around */
 247         if (time_before(now, stats->rx_fps_jiffies)) {
 248                 stats->rx_fps_jiffies = now;
 249                 return;
 250         }
 251
 252         /* Update once a second */
 253         if ((now - stats->rx_fps_jiffies) < HZ)
 254                 return;
 255
 256         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 257                         ((now - stats->rx_fps_jiffies) / HZ);
 258
 259         stats->rx_fps_jiffies = now;
 260         stats->be_prev_rx_frags = stats->be_rx_frags;
 261         eqd = stats->be_rx_fps / 110000;
 262         eqd = eqd << 3;
 263         if (eqd > rx_eq->max_eqd)
 264                 eqd = rx_eq->max_eqd;
 265         if (eqd < rx_eq->min_eqd)
 266                 eqd = rx_eq->min_eqd;
 267         if (eqd < 10)
 268                 eqd = 0;
 269         if (eqd != rx_eq->cur_eqd)
 270                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 271
 272         rx_eq->cur_eqd = eqd;
 273 }
 274
 275 static struct net_device_stats *be_get_stats(struct net_device *dev)
 276 {
 277         struct be_adapter *adapter = netdev_priv(dev);
 278
 279         return &adapter->stats.net_stats;
 280 }
 281
 282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 283 {
 284         u64 rate = bytes;
 285
 286         do_div(rate, ticks / HZ);
 287         rate <<= 3;                     /* bytes/sec -> bits/sec */
 288         do_div(rate, 1000000ul);        /* MB/Sec */
 289
 290         return rate;
 291 }
 292
 293 static void be_tx_rate_update(struct be_adapter *adapter)
 294 {
 295         struct be_drvr_stats *stats = drvr_stats(adapter);
 296         ulong now = jiffies;
 297
 298         /* Wrapped around? */
 299         if (time_before(now, stats->be_tx_jiffies)) {
 300                 stats->be_tx_jiffies = now;
 301                 return;
 302         }
 303
 304         /* Update tx rate once in two seconds */
 305         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 306                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 307                                                   - stats->be_tx_bytes_prev,
 308                                                  now - stats->be_tx_jiffies);
 309                 stats->be_tx_jiffies = now;
 310                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 311         }
 312 }
 313
 314 static void be_tx_stats_update(struct be_adapter *adapter,
 315                         u32 wrb_cnt, u32 copied, bool stopped)
 316 {
 317         struct be_drvr_stats *stats = drvr_stats(adapter);
 318         stats->be_tx_reqs++;
 319         stats->be_tx_wrbs += wrb_cnt;
 320         stats->be_tx_bytes += copied;
 321         if (stopped)
 322                 stats->be_tx_stops++;
 323 }
 324
 325 /* Determine number of WRB entries needed to xmit data in an skb */
 326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 327 {
 328         int cnt = (skb->len > skb->data_len);
 329
 330         cnt += skb_shinfo(skb)->nr_frags;
 331
 332         /* to account for hdr wrb */
 333         cnt++;
 334         if (cnt & 1) {
 335                 /* add a dummy to make it an even num */
 336                 cnt++;
 337                 *dummy = true;
 338         } else
 339                 *dummy = false;
 340         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 341         return cnt;
 342 }
 343
 344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 345 {
 346         wrb->frag_pa_hi = upper_32_bits(addr);
 347         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 348         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 349 }
 350
 351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 352                 bool vlan, u32 wrb_cnt, u32 len)
 353 {
 354         memset(hdr, 0, sizeof(*hdr));
 355
 356         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 357
 358         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 359                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 360                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 361                         hdr, skb_shinfo(skb)->gso_size);
 362         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 363                 if (is_tcp_pkt(skb))
 364                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 365                 else if (is_udp_pkt(skb))
 366                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 367         }
 368
 369         if (vlan && vlan_tx_tag_present(skb)) {
 370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 371                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 372                         hdr, vlan_tx_tag_get(skb));
 373         }
 374
 375         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 376         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 377         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 378         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 379 }
 380
 381
 382 static int make_tx_wrbs(struct be_adapter *adapter,
 383                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 384 {
 385         u64 busaddr;
 386         u32 i, copied = 0;
 387         struct pci_dev *pdev = adapter->pdev;
 388         struct sk_buff *first_skb = skb;
 389         struct be_queue_info *txq = &adapter->tx_obj.q;
 390         struct be_eth_wrb *wrb;
 391         struct be_eth_hdr_wrb *hdr;
 392
 393         atomic_add(wrb_cnt, &txq->used);
 394         hdr = queue_head_node(txq);
 395         queue_head_inc(txq);
 396
 397         if (skb->len > skb->data_len) {
 398                 int len = skb->len - skb->data_len;
 399                 busaddr = pci_map_single(pdev, skb->data, len,
 400                                          PCI_DMA_TODEVICE);
 401                 wrb = queue_head_node(txq);
 402                 wrb_fill(wrb, busaddr, len);
 403                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 404                 queue_head_inc(txq);
 405                 copied += len;
 406         }
 407
 408         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 409                 struct skb_frag_struct *frag =
 410                         &skb_shinfo(skb)->frags[i];
 411                 busaddr = pci_map_page(pdev, frag->page,
 412                                         frag->page_offset,
 413                                         frag->size, PCI_DMA_TODEVICE);
 414                 wrb = queue_head_node(txq);
 415                 wrb_fill(wrb, busaddr, frag->size);
 416                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 417                 queue_head_inc(txq);
 418                 copied += frag->size;
 419         }
 420
 421         if (dummy_wrb) {
 422                 wrb = queue_head_node(txq);
 423                 wrb_fill(wrb, 0, 0);
 424                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 425                 queue_head_inc(txq);
 426         }
 427
 428         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 429                 wrb_cnt, copied);
 430         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 431
 432         return copied;
 433 }
 434
 435 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 436 {
 437         struct be_adapter *adapter = netdev_priv(netdev);
 438         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 439         struct be_queue_info *txq = &tx_obj->q;
 440         u32 wrb_cnt = 0, copied = 0;
 441         u32 start = txq->head;
 442         bool dummy_wrb, stopped = false;
 443
 444         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 445
 446         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 447
 448         /* record the sent skb in the sent_skb table */
 449         BUG_ON(tx_obj->sent_skb_list[start]);
 450         tx_obj->sent_skb_list[start] = skb;
 451
 452         /* Ensure that txq has space for the next skb; Else stop the queue
 453          * *BEFORE* ringing the tx doorbell, so that we serialze the
 454          * tx compls of the current transmit which'll wake up the queue
 455          */
 456         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 457                 netif_stop_queue(netdev);
 458                 stopped = true;
 459         }
 460
 461         be_txq_notify(adapter, txq->id, wrb_cnt);
 462
 463         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 464         return NETDEV_TX_OK;
 465 }
 466
 467 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 468 {
 469         struct be_adapter *adapter = netdev_priv(netdev);
 470         if (new_mtu < BE_MIN_MTU ||
 471                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 472                 dev_info(&adapter->pdev->dev,
 473                         "MTU must be between %d and %d bytes\n",
 474                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 475                 return -EINVAL;
 476         }
 477         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 478                         netdev->mtu, new_mtu);
 479         netdev->mtu = new_mtu;
 480         return 0;
 481 }
 482
 483 /*
 484  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 485  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 486  * set the BE in promiscuous VLAN mode.
 487  */
 488 static void be_vid_config(struct net_device *netdev)
 489 {
 490         struct be_adapter *adapter = netdev_priv(netdev);
 491         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 492         u16 ntags = 0, i;
 493
 494         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 495                 /* Construct VLAN Table to give to HW */
 496                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 497                         if (adapter->vlan_tag[i]) {
 498                                 vtag[ntags] = cpu_to_le16(i);
 499                                 ntags++;
 500                         }
 501                 }
 502                 be_cmd_vlan_config(adapter, adapter->if_handle,
 503                         vtag, ntags, 1, 0);
 504         } else {
 505                 be_cmd_vlan_config(adapter, adapter->if_handle,
 506                         NULL, 0, 1, 1);
 507         }
 508 }
 509
 510 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 511 {
 512         struct be_adapter *adapter = netdev_priv(netdev);
 513         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 514         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 515
 516         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 517         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 518         adapter->vlan_grp = grp;
 519         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 520         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 521 }
 522
 523 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 524 {
 525         struct be_adapter *adapter = netdev_priv(netdev);
 526
 527         adapter->num_vlans++;
 528         adapter->vlan_tag[vid] = 1;
 529
 530         be_vid_config(netdev);
 531 }
 532
 533 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 534 {
 535         struct be_adapter *adapter = netdev_priv(netdev);
 536
 537         adapter->num_vlans--;
 538         adapter->vlan_tag[vid] = 0;
 539
 540         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 541         be_vid_config(netdev);
 542 }
 543
 544 static void be_set_multicast_list(struct net_device *netdev)
 545 {
 546         struct be_adapter *adapter = netdev_priv(netdev);
 547
 548         if (netdev->flags & IFF_PROMISC) {
 549                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 550                 adapter->promiscuous = true;
 551                 goto done;
 552         }
 553
 554         /* BE was previously in promiscous mode; disable it */
 555         if (adapter->promiscuous) {
 556                 adapter->promiscuous = false;
 557                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 558         }
 559
 560         if (netdev->flags & IFF_ALLMULTI) {
 561                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
 562                 goto done;
 563         }
 564
 565         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 566                 netdev->mc_count);
 567 done:
 568         return;
 569 }
 570
 571 static void be_rx_rate_update(struct be_adapter *adapter)
 572 {
 573         struct be_drvr_stats *stats = drvr_stats(adapter);
 574         ulong now = jiffies;
 575
 576         /* Wrapped around */
 577         if (time_before(now, stats->be_rx_jiffies)) {
 578                 stats->be_rx_jiffies = now;
 579                 return;
 580         }
 581
 582         /* Update the rate once in two seconds */
 583         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 584                 return;
 585
 586         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 587                                           - stats->be_rx_bytes_prev,
 588                                          now - stats->be_rx_jiffies);
 589         stats->be_rx_jiffies = now;
 590         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 591 }
 592
 593 static void be_rx_stats_update(struct be_adapter *adapter,
 594                 u32 pktsize, u16 numfrags)
 595 {
 596         struct be_drvr_stats *stats = drvr_stats(adapter);
 597
 598         stats->be_rx_compl++;
 599         stats->be_rx_frags += numfrags;
 600         stats->be_rx_bytes += pktsize;
 601 }
 602
 603 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 604 {
 605         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 606
 607         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 608         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 609         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 610         if (ip_version) {
 611                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 612                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 613         }
 614         ipv6_chk = (ip_version && (tcpf || udpf));
 615
 616         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 617 }
 618
 619 static struct be_rx_page_info *
 620 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 621 {
 622         struct be_rx_page_info *rx_page_info;
 623         struct be_queue_info *rxq = &adapter->rx_obj.q;
 624
 625         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 626         BUG_ON(!rx_page_info->page);
 627
 628         if (rx_page_info->last_page_user)
 629                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 630                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 631
 632         atomic_dec(&rxq->used);
 633         return rx_page_info;
 634 }
 635
 636 /* Throwaway the data in the Rx completion */
 637 static void be_rx_compl_discard(struct be_adapter *adapter,
 638                         struct be_eth_rx_compl *rxcp)
 639 {
 640         struct be_queue_info *rxq = &adapter->rx_obj.q;
 641         struct be_rx_page_info *page_info;
 642         u16 rxq_idx, i, num_rcvd;
 643
 644         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 645         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 646
 647         for (i = 0; i < num_rcvd; i++) {
 648                 page_info = get_rx_page_info(adapter, rxq_idx);
 649                 put_page(page_info->page);
 650                 memset(page_info, 0, sizeof(*page_info));
 651                 index_inc(&rxq_idx, rxq->len);
 652         }
 653 }
 654
 655 /*
 656  * skb_fill_rx_data forms a complete skb for an ether frame
 657  * indicated by rxcp.
 658  */
 659 static void skb_fill_rx_data(struct be_adapter *adapter,
 660                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 661 {
 662         struct be_queue_info *rxq = &adapter->rx_obj.q;
 663         struct be_rx_page_info *page_info;
 664         u16 rxq_idx, i, num_rcvd, j;
 665         u32 pktsize, hdr_len, curr_frag_len, size;
 666         u8 *start;
 667
 668         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 669         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 670         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 671
 672         page_info = get_rx_page_info(adapter, rxq_idx);
 673
 674         start = page_address(page_info->page) + page_info->page_offset;
 675         prefetch(start);
 676
 677         /* Copy data in the first descriptor of this completion */
 678         curr_frag_len = min(pktsize, rx_frag_size);
 679
 680         /* Copy the header portion into skb_data */
 681         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 682         memcpy(skb->data, start, hdr_len);
 683         skb->len = curr_frag_len;
 684         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 685                 /* Complete packet has now been moved to data */
 686                 put_page(page_info->page);
 687                 skb->data_len = 0;
 688                 skb->tail += curr_frag_len;
 689         } else {
 690                 skb_shinfo(skb)->nr_frags = 1;
 691                 skb_shinfo(skb)->frags[0].page = page_info->page;
 692                 skb_shinfo(skb)->frags[0].page_offset =
 693                                         page_info->page_offset + hdr_len;
 694                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 695                 skb->data_len = curr_frag_len - hdr_len;
 696                 skb->tail += hdr_len;
 697         }
 698         memset(page_info, 0, sizeof(*page_info));
 699
 700         if (pktsize <= rx_frag_size) {
 701                 BUG_ON(num_rcvd != 1);
 702                 goto done;
 703         }
 704
 705         /* More frags present for this completion */
 706         size = pktsize;
 707         for (i = 1, j = 0; i < num_rcvd; i++) {
 708                 size -= curr_frag_len;
 709                 index_inc(&rxq_idx, rxq->len);
 710                 page_info = get_rx_page_info(adapter, rxq_idx);
 711
 712                 curr_frag_len = min(size, rx_frag_size);
 713
 714                 /* Coalesce all frags from the same physical page in one slot */
 715                 if (page_info->page_offset == 0) {
 716                         /* Fresh page */
 717                         j++;
 718                         skb_shinfo(skb)->frags[j].page = page_info->page;
 719                         skb_shinfo(skb)->frags[j].page_offset =
 720                                                         page_info->page_offset;
 721                         skb_shinfo(skb)->frags[j].size = 0;
 722                         skb_shinfo(skb)->nr_frags++;
 723                 } else {
 724                         put_page(page_info->page);
 725                 }
 726
 727                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 728                 skb->len += curr_frag_len;
 729                 skb->data_len += curr_frag_len;
 730
 731                 memset(page_info, 0, sizeof(*page_info));
 732         }
 733         BUG_ON(j > MAX_SKB_FRAGS);
 734
 735 done:
 736         be_rx_stats_update(adapter, pktsize, num_rcvd);
 737         return;
 738 }
 739
 740 /* Process the RX completion indicated by rxcp when GRO is disabled */
 741 static void be_rx_compl_process(struct be_adapter *adapter,
 742                         struct be_eth_rx_compl *rxcp)
 743 {
 744         struct sk_buff *skb;
 745         u32 vtp, vid;
 746
 747         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 748
 749         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 750         if (!skb) {
 751                 if (net_ratelimit())
 752                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 753                 be_rx_compl_discard(adapter, rxcp);
 754                 return;
 755         }
 756
 757         skb_reserve(skb, NET_IP_ALIGN);
 758
 759         skb_fill_rx_data(adapter, skb, rxcp);
 760
 761         if (do_pkt_csum(rxcp, adapter->rx_csum))
 762                 skb->ip_summed = CHECKSUM_NONE;
 763         else
 764                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 765
 766         skb->truesize = skb->len + sizeof(struct sk_buff);
 767         skb->protocol = eth_type_trans(skb, adapter->netdev);
 768         skb->dev = adapter->netdev;
 769
 770         if (vtp) {
 771                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 772                         kfree_skb(skb);
 773                         return;
 774                 }
 775                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 776                 vid = be16_to_cpu(vid);
 777                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 778         } else {
 779                 netif_receive_skb(skb);
 780         }
 781
 782         adapter->netdev->last_rx = jiffies;
 783
 784         return;
 785 }
 786
 787 /* Process the RX completion indicated by rxcp when GRO is enabled */
 788 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 789                         struct be_eth_rx_compl *rxcp)
 790 {
 791         struct be_rx_page_info *page_info;
 792         struct sk_buff *skb = NULL;
 793         struct be_queue_info *rxq = &adapter->rx_obj.q;
 794         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 795         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 796         u16 i, rxq_idx = 0, vid, j;
 797
 798         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 799         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 800         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 801         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 802
 803         skb = napi_get_frags(&eq_obj->napi);
 804         if (!skb) {
 805                 be_rx_compl_discard(adapter, rxcp);
 806                 return;
 807         }
 808
 809         remaining = pkt_size;
 810         for (i = 0, j = -1; i < num_rcvd; i++) {
 811                 page_info = get_rx_page_info(adapter, rxq_idx);
 812
 813                 curr_frag_len = min(remaining, rx_frag_size);
 814
 815                 /* Coalesce all frags from the same physical page in one slot */
 816                 if (i == 0 || page_info->page_offset == 0) {
 817                         /* First frag or Fresh page */
 818                         j++;
 819                         skb_shinfo(skb)->frags[j].page = page_info->page;
 820                         skb_shinfo(skb)->frags[j].page_offset =
 821                                                         page_info->page_offset;
 822                         skb_shinfo(skb)->frags[j].size = 0;
 823                 } else {
 824                         put_page(page_info->page);
 825                 }
 826                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 827
 828                 remaining -= curr_frag_len;
 829                 index_inc(&rxq_idx, rxq->len);
 830                 memset(page_info, 0, sizeof(*page_info));
 831         }
 832         BUG_ON(j > MAX_SKB_FRAGS);
 833
 834         skb_shinfo(skb)->nr_frags = j + 1;
 835         skb->len = pkt_size;
 836         skb->data_len = pkt_size;
 837         skb->truesize += pkt_size;
 838         skb->ip_summed = CHECKSUM_UNNECESSARY;
 839
 840         if (likely(!vlanf)) {
 841                 napi_gro_frags(&eq_obj->napi);
 842         } else {
 843                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 844                 vid = be16_to_cpu(vid);
 845
 846                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 847                         return;
 848
 849                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 850         }
 851
 852         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 853         return;
 854 }
 855
 856 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 857 {
 858         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 859
 860         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 861                 return NULL;
 862
 863         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 864
 865         queue_tail_inc(&adapter->rx_obj.cq);
 866         return rxcp;
 867 }
 868
 869 /* To reset the valid bit, we need to reset the whole word as
 870  * when walking the queue the valid entries are little-endian
 871  * and invalid entries are host endian
 872  */
 873 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 874 {
 875         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 876 }
 877
 878 static inline struct page *be_alloc_pages(u32 size)
 879 {
 880         gfp_t alloc_flags = GFP_ATOMIC;
 881         u32 order = get_order(size);
 882         if (order > 0)
 883                 alloc_flags |= __GFP_COMP;
 884         return  alloc_pages(alloc_flags, order);
 885 }
 886
 887 /*
 888  * Allocate a page, split it to fragments of size rx_frag_size and post as
 889  * receive buffers to BE
 890  */
 891 static void be_post_rx_frags(struct be_adapter *adapter)
 892 {
 893         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 894         struct be_rx_page_info *page_info = NULL;
 895         struct be_queue_info *rxq = &adapter->rx_obj.q;
 896         struct page *pagep = NULL;
 897         struct be_eth_rx_d *rxd;
 898         u64 page_dmaaddr = 0, frag_dmaaddr;
 899         u32 posted, page_offset = 0;
 900
 901         page_info = &page_info_tbl[rxq->head];
 902         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 903                 if (!pagep) {
 904                         pagep = be_alloc_pages(adapter->big_page_size);
 905                         if (unlikely(!pagep)) {
 906                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 907                                 break;
 908                         }
 909                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 910                                                 adapter->big_page_size,
 911                                                 PCI_DMA_FROMDEVICE);
 912                         page_info->page_offset = 0;
 913                 } else {
 914                         get_page(pagep);
 915                         page_info->page_offset = page_offset + rx_frag_size;
 916                 }
 917                 page_offset = page_info->page_offset;
 918                 page_info->page = pagep;
 919                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 920                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 921
 922                 rxd = queue_head_node(rxq);
 923                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 924                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 925                 queue_head_inc(rxq);
 926
 927                 /* Any space left in the current big page for another frag? */
 928                 if ((page_offset + rx_frag_size + rx_frag_size) >
 929                                         adapter->big_page_size) {
 930                         pagep = NULL;
 931                         page_info->last_page_user = true;
 932                 }
 933                 page_info = &page_info_tbl[rxq->head];
 934         }
 935         if (pagep)
 936                 page_info->last_page_user = true;
 937
 938         if (posted) {
 939                 atomic_add(posted, &rxq->used);
 940                 be_rxq_notify(adapter, rxq->id, posted);
 941         } else if (atomic_read(&rxq->used) == 0) {
 942                 /* Let be_worker replenish when memory is available */
 943                 adapter->rx_post_starved = true;
 944         }
 945
 946         return;
 947 }
 948
 949 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 950 {
 951         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 952
 953         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 954                 return NULL;
 955
 956         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 957
 958         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 959
 960         queue_tail_inc(tx_cq);
 961         return txcp;
 962 }
 963
 964 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 965 {
 966         struct be_queue_info *txq = &adapter->tx_obj.q;
 967         struct be_eth_wrb *wrb;
 968         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 969         struct sk_buff *sent_skb;
 970         u64 busaddr;
 971         u16 cur_index, num_wrbs = 0;
 972
 973         cur_index = txq->tail;
 974         sent_skb = sent_skbs[cur_index];
 975         BUG_ON(!sent_skb);
 976         sent_skbs[cur_index] = NULL;
 977
 978         do {
 979                 cur_index = txq->tail;
 980                 wrb = queue_tail_node(txq);
 981                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 982                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 983                 if (busaddr != 0) {
 984                         pci_unmap_single(adapter->pdev, busaddr,
 985                                 wrb->frag_len, PCI_DMA_TODEVICE);
 986                 }
 987                 num_wrbs++;
 988                 queue_tail_inc(txq);
 989         } while (cur_index != last_index);
 990
 991         atomic_sub(num_wrbs, &txq->used);
 992
 993         kfree_skb(sent_skb);
 994 }
 995
 996 static void be_rx_q_clean(struct be_adapter *adapter)
 997 {
 998         struct be_rx_page_info *page_info;
 999         struct be_queue_info *rxq = &adapter->rx_obj.q;
1000         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1001         struct be_eth_rx_compl *rxcp;
1002         u16 tail;
1003
1004         /* First cleanup pending rx completions */
1005         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1006                 be_rx_compl_discard(adapter, rxcp);
1007                 be_rx_compl_reset(rxcp);
1008                 be_cq_notify(adapter, rx_cq->id, true, 1);
1009         }
1010
1011         /* Then free posted rx buffer that were not used */
1012         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1013         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1014                 page_info = get_rx_page_info(adapter, tail);
1015                 put_page(page_info->page);
1016                 memset(page_info, 0, sizeof(*page_info));
1017         }
1018         BUG_ON(atomic_read(&rxq->used));
1019 }
1020
1021 static void be_tx_compl_clean(struct be_adapter *adapter)
1022 {
1023         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1024         struct be_queue_info *txq = &adapter->tx_obj.q;
1025         struct be_eth_tx_compl *txcp;
1026         u16 end_idx, cmpl = 0, timeo = 0;
1027
1028         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1029         do {
1030                 while ((txcp = be_tx_compl_get(tx_cq))) {
1031                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1032                                         wrb_index, txcp);
1033                         be_tx_compl_process(adapter, end_idx);
1034                         cmpl++;
1035                 }
1036                 if (cmpl) {
1037                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1038                         cmpl = 0;
1039                 }
1040
1041                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1042                         break;
1043
1044                 mdelay(1);
1045         } while (true);
1046
1047         if (atomic_read(&txq->used))
1048                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1049                         atomic_read(&txq->used));
1050 }
1051
1052 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1053 {
1054         struct be_queue_info *q;
1055
1056         q = &adapter->mcc_obj.q;
1057         if (q->created)
1058                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1059         be_queue_free(adapter, q);
1060
1061         q = &adapter->mcc_obj.cq;
1062         if (q->created)
1063                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1064         be_queue_free(adapter, q);
1065 }
1066
1067 /* Must be called only after TX qs are created as MCC shares TX EQ */
1068 static int be_mcc_queues_create(struct be_adapter *adapter)
1069 {
1070         struct be_queue_info *q, *cq;
1071
1072         /* Alloc MCC compl queue */
1073         cq = &adapter->mcc_obj.cq;
1074         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1075                         sizeof(struct be_mcc_compl)))
1076                 goto err;
1077
1078         /* Ask BE to create MCC compl queue; share TX's eq */
1079         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1080                 goto mcc_cq_free;
1081
1082         /* Alloc MCC queue */
1083         q = &adapter->mcc_obj.q;
1084         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1085                 goto mcc_cq_destroy;
1086
1087         /* Ask BE to create MCC queue */
1088         if (be_cmd_mccq_create(adapter, q, cq))
1089                 goto mcc_q_free;
1090
1091         return 0;
1092
1093 mcc_q_free:
1094         be_queue_free(adapter, q);
1095 mcc_cq_destroy:
1096         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1097 mcc_cq_free:
1098         be_queue_free(adapter, cq);
1099 err:
1100         return -1;
1101 }
1102
1103 static void be_tx_queues_destroy(struct be_adapter *adapter)
1104 {
1105         struct be_queue_info *q;
1106
1107         q = &adapter->tx_obj.q;
1108         if (q->created)
1109                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1110         be_queue_free(adapter, q);
1111
1112         q = &adapter->tx_obj.cq;
1113         if (q->created)
1114                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1115         be_queue_free(adapter, q);
1116
1117         q = &adapter->tx_eq.q;
1118         if (q->created)
1119                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1120         be_queue_free(adapter, q);
1121 }
1122
1123 static int be_tx_queues_create(struct be_adapter *adapter)
1124 {
1125         struct be_queue_info *eq, *q, *cq;
1126
1127         adapter->tx_eq.max_eqd = 0;
1128         adapter->tx_eq.min_eqd = 0;
1129         adapter->tx_eq.cur_eqd = 96;
1130         adapter->tx_eq.enable_aic = false;
1131         /* Alloc Tx Event queue */
1132         eq = &adapter->tx_eq.q;
1133         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1134                 return -1;
1135
1136         /* Ask BE to create Tx Event queue */
1137         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1138                 goto tx_eq_free;
1139         /* Alloc TX eth compl queue */
1140         cq = &adapter->tx_obj.cq;
1141         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1142                         sizeof(struct be_eth_tx_compl)))
1143                 goto tx_eq_destroy;
1144
1145         /* Ask BE to create Tx eth compl queue */
1146         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1147                 goto tx_cq_free;
1148
1149         /* Alloc TX eth queue */
1150         q = &adapter->tx_obj.q;
1151         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1152                 goto tx_cq_destroy;
1153
1154         /* Ask BE to create Tx eth queue */
1155         if (be_cmd_txq_create(adapter, q, cq))
1156                 goto tx_q_free;
1157         return 0;
1158
1159 tx_q_free:
1160         be_queue_free(adapter, q);
1161 tx_cq_destroy:
1162         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1163 tx_cq_free:
1164         be_queue_free(adapter, cq);
1165 tx_eq_destroy:
1166         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1167 tx_eq_free:
1168         be_queue_free(adapter, eq);
1169         return -1;
1170 }
1171
1172 static void be_rx_queues_destroy(struct be_adapter *adapter)
1173 {
1174         struct be_queue_info *q;
1175
1176         q = &adapter->rx_obj.q;
1177         if (q->created) {
1178                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1179                 be_rx_q_clean(adapter);
1180         }
1181         be_queue_free(adapter, q);
1182
1183         q = &adapter->rx_obj.cq;
1184         if (q->created)
1185                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1186         be_queue_free(adapter, q);
1187
1188         q = &adapter->rx_eq.q;
1189         if (q->created)
1190                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1191         be_queue_free(adapter, q);
1192 }
1193
1194 static int be_rx_queues_create(struct be_adapter *adapter)
1195 {
1196         struct be_queue_info *eq, *q, *cq;
1197         int rc;
1198
1199         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1200         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1201         adapter->rx_eq.min_eqd = 0;
1202         adapter->rx_eq.cur_eqd = 0;
1203         adapter->rx_eq.enable_aic = true;
1204
1205         /* Alloc Rx Event queue */
1206         eq = &adapter->rx_eq.q;
1207         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1208                                 sizeof(struct be_eq_entry));
1209         if (rc)
1210                 return rc;
1211
1212         /* Ask BE to create Rx Event queue */
1213         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1214         if (rc)
1215                 goto rx_eq_free;
1216
1217         /* Alloc RX eth compl queue */
1218         cq = &adapter->rx_obj.cq;
1219         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1220                         sizeof(struct be_eth_rx_compl));
1221         if (rc)
1222                 goto rx_eq_destroy;
1223
1224         /* Ask BE to create Rx eth compl queue */
1225         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1226         if (rc)
1227                 goto rx_cq_free;
1228
1229         /* Alloc RX eth queue */
1230         q = &adapter->rx_obj.q;
1231         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1232         if (rc)
1233                 goto rx_cq_destroy;
1234
1235         /* Ask BE to create Rx eth queue */
1236         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1237                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1238         if (rc)
1239                 goto rx_q_free;
1240
1241         return 0;
1242 rx_q_free:
1243         be_queue_free(adapter, q);
1244 rx_cq_destroy:
1245         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1246 rx_cq_free:
1247         be_queue_free(adapter, cq);
1248 rx_eq_destroy:
1249         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1250 rx_eq_free:
1251         be_queue_free(adapter, eq);
1252         return rc;
1253 }
1254 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1255 {
1256         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1257         u32 evt = entry->evt;
1258
1259         if (!evt)
1260                 return false;
1261
1262         evt = le32_to_cpu(evt);
1263         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1264         entry->evt = 0;
1265         queue_tail_inc(&eq_obj->q);
1266         return true;
1267 }
1268
1269 static int event_handle(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1270 {
1271         u16 rid = 0, num = 0;
1272
1273         while (event_get(eq_obj, &rid))
1274                 num++;
1275
1276         /* We can see an interrupt and no event */
1277         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1278         if (num)
1279                 napi_schedule(&eq_obj->napi);
1280
1281         return num;
1282 }
1283
1284 static irqreturn_t be_intx(int irq, void *dev)
1285 {
1286         struct be_adapter *adapter = dev;
1287         int isr;
1288
1289         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1290                         be_pci_func(adapter) * CEV_ISR_SIZE);
1291         if (!isr)
1292                 return IRQ_NONE;
1293
1294         event_handle(adapter, &adapter->tx_eq);
1295         event_handle(adapter, &adapter->rx_eq);
1296
1297         return IRQ_HANDLED;
1298 }
1299
1300 static irqreturn_t be_msix_rx(int irq, void *dev)
1301 {
1302         struct be_adapter *adapter = dev;
1303
1304         event_handle(adapter, &adapter->rx_eq);
1305
1306         return IRQ_HANDLED;
1307 }
1308
1309 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1310 {
1311         struct be_adapter *adapter = dev;
1312
1313         event_handle(adapter, &adapter->tx_eq);
1314
1315         return IRQ_HANDLED;
1316 }
1317
1318 static inline bool do_gro(struct be_adapter *adapter,
1319                         struct be_eth_rx_compl *rxcp)
1320 {
1321         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1322         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1323
1324         if (err)
1325                 drvr_stats(adapter)->be_rxcp_err++;
1326
1327         return (tcp_frame && !err) ? true : false;
1328 }
1329
1330 int be_poll_rx(struct napi_struct *napi, int budget)
1331 {
1332         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1333         struct be_adapter *adapter =
1334                 container_of(rx_eq, struct be_adapter, rx_eq);
1335         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1336         struct be_eth_rx_compl *rxcp;
1337         u32 work_done;
1338
1339         for (work_done = 0; work_done < budget; work_done++) {
1340                 rxcp = be_rx_compl_get(adapter);
1341                 if (!rxcp)
1342                         break;
1343
1344                 if (do_gro(adapter, rxcp))
1345                         be_rx_compl_process_gro(adapter, rxcp);
1346                 else
1347                         be_rx_compl_process(adapter, rxcp);
1348
1349                 be_rx_compl_reset(rxcp);
1350         }
1351
1352         /* Refill the queue */
1353         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1354                 be_post_rx_frags(adapter);
1355
1356         /* All consumed */
1357         if (work_done < budget) {
1358                 napi_complete(napi);
1359                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1360         } else {
1361                 /* More to be consumed; continue with interrupts disabled */
1362                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1363         }
1364         return work_done;
1365 }
1366
1367 void be_process_tx(struct be_adapter *adapter)
1368 {
1369         struct be_queue_info *txq = &adapter->tx_obj.q;
1370         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1371         struct be_eth_tx_compl *txcp;
1372         u32 num_cmpl = 0;
1373         u16 end_idx;
1374
1375         while ((txcp = be_tx_compl_get(tx_cq))) {
1376                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1377                                         wrb_index, txcp);
1378                 be_tx_compl_process(adapter, end_idx);
1379                 num_cmpl++;
1380         }
1381
1382         if (num_cmpl) {
1383                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1384
1385                 /* As Tx wrbs have been freed up, wake up netdev queue if
1386                  * it was stopped due to lack of tx wrbs.
1387                  */
1388                 if (netif_queue_stopped(adapter->netdev) &&
1389                         atomic_read(&txq->used) < txq->len / 2) {
1390                         netif_wake_queue(adapter->netdev);
1391                 }
1392
1393                 drvr_stats(adapter)->be_tx_events++;
1394                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1395         }
1396 }
1397
1398 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1399  * For TX/MCC we don't honour budget; consume everything
1400  */
1401 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1402 {
1403         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1404         struct be_adapter *adapter =
1405                 container_of(tx_eq, struct be_adapter, tx_eq);
1406
1407         napi_complete(napi);
1408
1409         be_process_tx(adapter);
1410
1411         be_process_mcc(adapter);
1412
1413         return 1;
1414 }
1415
1416 static void be_worker(struct work_struct *work)
1417 {
1418         struct be_adapter *adapter =
1419                 container_of(work, struct be_adapter, work.work);
1420         int status;
1421
1422         /* Get Stats */
1423         status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
1424         if (!status)
1425                 netdev_stats_update(adapter);
1426
1427         /* Set EQ delay */
1428         be_rx_eqd_update(adapter);
1429
1430         be_tx_rate_update(adapter);
1431         be_rx_rate_update(adapter);
1432
1433         if (adapter->rx_post_starved) {
1434                 adapter->rx_post_starved = false;
1435                 be_post_rx_frags(adapter);
1436         }
1437
1438         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1439 }
1440
1441 static void be_msix_enable(struct be_adapter *adapter)
1442 {
1443         int i, status;
1444
1445         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1446                 adapter->msix_entries[i].entry = i;
1447
1448         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1449                 BE_NUM_MSIX_VECTORS);
1450         if (status == 0)
1451                 adapter->msix_enabled = true;
1452         return;
1453 }
1454
1455 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1456 {
1457         return adapter->msix_entries[eq_id - 8 * be_pci_func(adapter)].vector;
1458 }
1459
1460 static int be_msix_register(struct be_adapter *adapter)
1461 {
1462         struct net_device *netdev = adapter->netdev;
1463         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1464         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1465         int status, vec;
1466
1467         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1468         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1469         status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter);
1470         if (status)
1471                 goto err;
1472
1473         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1474         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1475         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1476         if (status) { /* Free TX IRQ */
1477                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1478                 free_irq(vec, adapter);
1479                 goto err;
1480         }
1481         return 0;
1482 err:
1483         dev_warn(&adapter->pdev->dev,
1484                 "MSIX Request IRQ failed - err %d\n", status);
1485         pci_disable_msix(adapter->pdev);
1486         adapter->msix_enabled = false;
1487         return status;
1488 }
1489
1490 static int be_irq_register(struct be_adapter *adapter)
1491 {
1492         struct net_device *netdev = adapter->netdev;
1493         int status;
1494
1495         if (adapter->msix_enabled) {
1496                 status = be_msix_register(adapter);
1497                 if (status == 0)
1498                         goto done;
1499         }
1500
1501         /* INTx */
1502         netdev->irq = adapter->pdev->irq;
1503         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1504                         adapter);
1505         if (status) {
1506                 dev_err(&adapter->pdev->dev,
1507                         "INTx request IRQ failed - err %d\n", status);
1508                 return status;
1509         }
1510 done:
1511         adapter->isr_registered = true;
1512         return 0;
1513 }
1514
1515 static void be_irq_unregister(struct be_adapter *adapter)
1516 {
1517         struct net_device *netdev = adapter->netdev;
1518         int vec;
1519
1520         if (!adapter->isr_registered)
1521                 return;
1522
1523         /* INTx */
1524         if (!adapter->msix_enabled) {
1525                 free_irq(netdev->irq, adapter);
1526                 goto done;
1527         }
1528
1529         /* MSIx */
1530         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1531         free_irq(vec, adapter);
1532         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1533         free_irq(vec, adapter);
1534 done:
1535         adapter->isr_registered = false;
1536         return;
1537 }
1538
1539 static int be_open(struct net_device *netdev)
1540 {
1541         struct be_adapter *adapter = netdev_priv(netdev);
1542         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1543         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1544         bool link_up;
1545         int status;
1546
1547         /* First time posting */
1548         be_post_rx_frags(adapter);
1549
1550         napi_enable(&rx_eq->napi);
1551         napi_enable(&tx_eq->napi);
1552
1553         be_irq_register(adapter);
1554
1555         be_intr_set(adapter, true);
1556
1557         /* The evt queues are created in unarmed state; arm them */
1558         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1559         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1560
1561         /* Rx compl queue may be in unarmed state; rearm it */
1562         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1563
1564         status = be_cmd_link_status_query(adapter, &link_up);
1565         if (status)
1566                 return status;
1567         be_link_status_update(adapter, link_up);
1568
1569         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1570         return 0;
1571 }
1572
1573 static int be_setup(struct be_adapter *adapter)
1574 {
1575         struct net_device *netdev = adapter->netdev;
1576         u32 if_flags;
1577         int status;
1578
1579         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1580                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1581                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1582         status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1583                         false/* pmac_invalid */, &adapter->if_handle,
1584                         &adapter->pmac_id);
1585         if (status != 0)
1586                 goto do_none;
1587
1588         be_vid_config(netdev);
1589
1590         status = be_cmd_set_flow_control(adapter, true, true);
1591         if (status != 0)
1592                 goto if_destroy;
1593
1594         status = be_tx_queues_create(adapter);
1595         if (status != 0)
1596                 goto if_destroy;
1597
1598         status = be_rx_queues_create(adapter);
1599         if (status != 0)
1600                 goto tx_qs_destroy;
1601
1602         status = be_mcc_queues_create(adapter);
1603         if (status != 0)
1604                 goto rx_qs_destroy;
1605
1606         return 0;
1607
1608 rx_qs_destroy:
1609         be_rx_queues_destroy(adapter);
1610 tx_qs_destroy:
1611         be_tx_queues_destroy(adapter);
1612 if_destroy:
1613         be_cmd_if_destroy(adapter, adapter->if_handle);
1614 do_none:
1615         return status;
1616 }
1617
1618 static int be_clear(struct be_adapter *adapter)
1619 {
1620         be_rx_queues_destroy(adapter);
1621         be_tx_queues_destroy(adapter);
1622
1623         be_cmd_if_destroy(adapter, adapter->if_handle);
1624
1625         be_mcc_queues_destroy(adapter);
1626         return 0;
1627 }
1628
1629 static int be_close(struct net_device *netdev)
1630 {
1631         struct be_adapter *adapter = netdev_priv(netdev);
1632         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1633         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1634         int vec;
1635
1636         cancel_delayed_work_sync(&adapter->work);
1637
1638         netif_stop_queue(netdev);
1639         netif_carrier_off(netdev);
1640         adapter->link_up = false;
1641
1642         be_intr_set(adapter, false);
1643
1644         if (adapter->msix_enabled) {
1645                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1646                 synchronize_irq(vec);
1647                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1648                 synchronize_irq(vec);
1649         } else {
1650                 synchronize_irq(netdev->irq);
1651         }
1652         be_irq_unregister(adapter);
1653
1654         napi_disable(&rx_eq->napi);
1655         napi_disable(&tx_eq->napi);
1656
1657         /* Wait for all pending tx completions to arrive so that
1658          * all tx skbs are freed.
1659          */
1660         be_tx_compl_clean(adapter);
1661
1662         return 0;
1663 }
1664
1665 static struct net_device_ops be_netdev_ops = {
1666         .ndo_open               = be_open,
1667         .ndo_stop               = be_close,
1668         .ndo_start_xmit         = be_xmit,
1669         .ndo_get_stats          = be_get_stats,
1670         .ndo_set_rx_mode        = be_set_multicast_list,
1671         .ndo_set_mac_address    = be_mac_addr_set,
1672         .ndo_change_mtu         = be_change_mtu,
1673         .ndo_validate_addr      = eth_validate_addr,
1674         .ndo_vlan_rx_register   = be_vlan_register,
1675         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1676         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1677 };
1678
1679 static void be_netdev_init(struct net_device *netdev)
1680 {
1681         struct be_adapter *adapter = netdev_priv(netdev);
1682
1683         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1684                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1685                 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1686
1687         netdev->flags |= IFF_MULTICAST;
1688
1689         adapter->rx_csum = true;
1690
1691         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1692
1693         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1694
1695         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1696                 BE_NAPI_WEIGHT);
1697         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1698                 BE_NAPI_WEIGHT);
1699
1700         netif_carrier_off(netdev);
1701         netif_stop_queue(netdev);
1702 }
1703
1704 static void be_unmap_pci_bars(struct be_adapter *adapter)
1705 {
1706         if (adapter->csr)
1707                 iounmap(adapter->csr);
1708         if (adapter->db)
1709                 iounmap(adapter->db);
1710         if (adapter->pcicfg)
1711                 iounmap(adapter->pcicfg);
1712 }
1713
1714 static int be_map_pci_bars(struct be_adapter *adapter)
1715 {
1716         u8 __iomem *addr;
1717
1718         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1719                         pci_resource_len(adapter->pdev, 2));
1720         if (addr == NULL)
1721                 return -ENOMEM;
1722         adapter->csr = addr;
1723
1724         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1725                         128 * 1024);
1726         if (addr == NULL)
1727                 goto pci_map_err;
1728         adapter->db = addr;
1729
1730         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1731                         pci_resource_len(adapter->pdev, 1));
1732         if (addr == NULL)
1733                 goto pci_map_err;
1734         adapter->pcicfg = addr;
1735
1736         return 0;
1737 pci_map_err:
1738         be_unmap_pci_bars(adapter);
1739         return -ENOMEM;
1740 }
1741
1742
1743 static void be_ctrl_cleanup(struct be_adapter *adapter)
1744 {
1745         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1746
1747         be_unmap_pci_bars(adapter);
1748
1749         if (mem->va)
1750                 pci_free_consistent(adapter->pdev, mem->size,
1751                         mem->va, mem->dma);
1752 }
1753
1754 static int be_ctrl_init(struct be_adapter *adapter)
1755 {
1756         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1757         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1758         int status;
1759
1760         status = be_map_pci_bars(adapter);
1761         if (status)
1762                 return status;
1763
1764         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1765         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1766                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1767         if (!mbox_mem_alloc->va) {
1768                 be_unmap_pci_bars(adapter);
1769                 return -1;
1770         }
1771         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1772         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1773         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1774         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1775         spin_lock_init(&adapter->mbox_lock);
1776         spin_lock_init(&adapter->mcc_lock);
1777         spin_lock_init(&adapter->mcc_cq_lock);
1778
1779         return 0;
1780 }
1781
1782 static void be_stats_cleanup(struct be_adapter *adapter)
1783 {
1784         struct be_stats_obj *stats = &adapter->stats;
1785         struct be_dma_mem *cmd = &stats->cmd;
1786
1787         if (cmd->va)
1788                 pci_free_consistent(adapter->pdev, cmd->size,
1789                         cmd->va, cmd->dma);
1790 }
1791
1792 static int be_stats_init(struct be_adapter *adapter)
1793 {
1794         struct be_stats_obj *stats = &adapter->stats;
1795         struct be_dma_mem *cmd = &stats->cmd;
1796
1797         cmd->size = sizeof(struct be_cmd_req_get_stats);
1798         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1799         if (cmd->va == NULL)
1800                 return -1;
1801         return 0;
1802 }
1803
1804 static void __devexit be_remove(struct pci_dev *pdev)
1805 {
1806         struct be_adapter *adapter = pci_get_drvdata(pdev);
1807         if (!adapter)
1808                 return;
1809
1810         unregister_netdev(adapter->netdev);
1811
1812         be_clear(adapter);
1813
1814         be_stats_cleanup(adapter);
1815
1816         be_ctrl_cleanup(adapter);
1817
1818         if (adapter->msix_enabled) {
1819                 pci_disable_msix(adapter->pdev);
1820                 adapter->msix_enabled = false;
1821         }
1822
1823         pci_set_drvdata(pdev, NULL);
1824         pci_release_regions(pdev);
1825         pci_disable_device(pdev);
1826
1827         free_netdev(adapter->netdev);
1828 }
1829
1830 static int be_hw_up(struct be_adapter *adapter)
1831 {
1832         int status;
1833
1834         status = be_cmd_POST(adapter);
1835         if (status)
1836                 return status;
1837
1838         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
1839         if (status)
1840                 return status;
1841
1842         status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
1843         return status;
1844 }
1845
1846 static int __devinit be_probe(struct pci_dev *pdev,
1847                         const struct pci_device_id *pdev_id)
1848 {
1849         int status = 0;
1850         struct be_adapter *adapter;
1851         struct net_device *netdev;
1852         u8 mac[ETH_ALEN];
1853
1854         status = pci_enable_device(pdev);
1855         if (status)
1856                 goto do_none;
1857
1858         status = pci_request_regions(pdev, DRV_NAME);
1859         if (status)
1860                 goto disable_dev;
1861         pci_set_master(pdev);
1862
1863         netdev = alloc_etherdev(sizeof(struct be_adapter));
1864         if (netdev == NULL) {
1865                 status = -ENOMEM;
1866                 goto rel_reg;
1867         }
1868         adapter = netdev_priv(netdev);
1869         adapter->pdev = pdev;
1870         pci_set_drvdata(pdev, adapter);
1871         adapter->netdev = netdev;
1872
1873         be_msix_enable(adapter);
1874
1875         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1876         if (!status) {
1877                 netdev->features |= NETIF_F_HIGHDMA;
1878         } else {
1879                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1880                 if (status) {
1881                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1882                         goto free_netdev;
1883                 }
1884         }
1885
1886         status = be_ctrl_init(adapter);
1887         if (status)
1888                 goto free_netdev;
1889
1890         status = be_cmd_reset_function(adapter);
1891         if (status)
1892                 goto ctrl_clean;
1893
1894         status = be_stats_init(adapter);
1895         if (status)
1896                 goto ctrl_clean;
1897
1898         status = be_hw_up(adapter);
1899         if (status)
1900                 goto stats_clean;
1901
1902         status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
1903                         true /* permanent */, 0);
1904         if (status)
1905                 goto stats_clean;
1906         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1907
1908         INIT_DELAYED_WORK(&adapter->work, be_worker);
1909         be_netdev_init(netdev);
1910         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1911
1912         status = be_setup(adapter);
1913         if (status)
1914                 goto stats_clean;
1915         status = register_netdev(netdev);
1916         if (status != 0)
1917                 goto unsetup;
1918
1919         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1920         return 0;
1921
1922 unsetup:
1923         be_clear(adapter);
1924 stats_clean:
1925         be_stats_cleanup(adapter);
1926 ctrl_clean:
1927         be_ctrl_cleanup(adapter);
1928 free_netdev:
1929         free_netdev(adapter->netdev);
1930 rel_reg:
1931         pci_release_regions(pdev);
1932 disable_dev:
1933         pci_disable_device(pdev);
1934 do_none:
1935         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1936         return status;
1937 }
1938
1939 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1940 {
1941         struct be_adapter *adapter = pci_get_drvdata(pdev);
1942         struct net_device *netdev =  adapter->netdev;
1943
1944         netif_device_detach(netdev);
1945         if (netif_running(netdev)) {
1946                 rtnl_lock();
1947                 be_close(netdev);
1948                 be_clear(adapter);
1949                 rtnl_unlock();
1950         }
1951
1952         pci_save_state(pdev);
1953         pci_disable_device(pdev);
1954         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1955         return 0;
1956 }
1957
1958 static int be_resume(struct pci_dev *pdev)
1959 {
1960         int status = 0;
1961         struct be_adapter *adapter = pci_get_drvdata(pdev);
1962         struct net_device *netdev =  adapter->netdev;
1963
1964         netif_device_detach(netdev);
1965
1966         status = pci_enable_device(pdev);
1967         if (status)
1968                 return status;
1969
1970         pci_set_power_state(pdev, 0);
1971         pci_restore_state(pdev);
1972
1973         if (netif_running(netdev)) {
1974                 rtnl_lock();
1975                 be_setup(adapter);
1976                 be_open(netdev);
1977                 rtnl_unlock();
1978         }
1979         netif_device_attach(netdev);
1980         return 0;
1981 }
1982
1983 static struct pci_driver be_driver = {
1984         .name = DRV_NAME,
1985         .id_table = be_dev_ids,
1986         .probe = be_probe,
1987         .remove = be_remove,
1988         .suspend = be_suspend,
1989         .resume = be_resume
1990 };
1991
1992 static int __init be_init_module(void)
1993 {
1994         if (rx_frag_size != 8192 && rx_frag_size != 4096
1995                 && rx_frag_size != 2048) {
1996                 printk(KERN_WARNING DRV_NAME
1997                         " : Module param rx_frag_size must be 2048/4096/8192."
1998                         " Using 2048\n");
1999                 rx_frag_size = 2048;
2000         }
2001
2002         return pci_register_driver(&be_driver);
2003 }
2004 module_init(be_init_module);
2005
2006 static void __exit be_exit_module(void)
2007 {
2008         pci_unregister_driver(&be_driver);
2009 }
2010 module_exit(be_exit_module);