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 <asm/div64.h>
  20
  21 MODULE_VERSION(DRV_VER);
  22 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  23 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  24 MODULE_AUTHOR("ServerEngines Corporation");
  25 MODULE_LICENSE("GPL");
  26
  27 static unsigned int rx_frag_size = 2048;
  28 module_param(rx_frag_size, uint, S_IRUGO);
  29 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  30
  31 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  32         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  33         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  35         { 0 }
  36 };
  37 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  38
  39 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  40 {
  41         struct be_dma_mem *mem = &q->dma_mem;
  42         if (mem->va)
  43                 pci_free_consistent(adapter->pdev, mem->size,
  44                         mem->va, mem->dma);
  45 }
  46
  47 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  48                 u16 len, u16 entry_size)
  49 {
  50         struct be_dma_mem *mem = &q->dma_mem;
  51
  52         memset(q, 0, sizeof(*q));
  53         q->len = len;
  54         q->entry_size = entry_size;
  55         mem->size = len * entry_size;
  56         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  57         if (!mem->va)
  58                 return -1;
  59         memset(mem->va, 0, mem->size);
  60         return 0;
  61 }
  62
  63 static inline void *queue_head_node(struct be_queue_info *q)
  64 {
  65         return q->dma_mem.va + q->head * q->entry_size;
  66 }
  67
  68 static inline void *queue_tail_node(struct be_queue_info *q)
  69 {
  70         return q->dma_mem.va + q->tail * q->entry_size;
  71 }
  72
  73 static inline void queue_head_inc(struct be_queue_info *q)
  74 {
  75         index_inc(&q->head, q->len);
  76 }
  77
  78 static inline void queue_tail_inc(struct be_queue_info *q)
  79 {
  80         index_inc(&q->tail, q->len);
  81 }
  82
  83 static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
  84 {
  85         u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  86         u32 reg = ioread32(addr);
  87         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  88         if (!enabled && enable) {
  89                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  90         } else if (enabled && !enable) {
  91                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  92         } else {
  93                 printk(KERN_WARNING DRV_NAME
  94                         ": bad value in membar_int_ctrl reg=0x%x\n", reg);
  95                 return;
  96         }
  97         iowrite32(reg, addr);
  98 }
  99
 100 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 101 {
 102         u32 val = 0;
 103         val |= qid & DB_RQ_RING_ID_MASK;
 104         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
 105         iowrite32(val, ctrl->db + DB_RQ_OFFSET);
 106 }
 107
 108 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 109 {
 110         u32 val = 0;
 111         val |= qid & DB_TXULP_RING_ID_MASK;
 112         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 113         iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
 114 }
 115
 116 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
 117                 bool arm, bool clear_int, u16 num_popped)
 118 {
 119         u32 val = 0;
 120         val |= qid & DB_EQ_RING_ID_MASK;
 121         if (arm)
 122                 val |= 1 << DB_EQ_REARM_SHIFT;
 123         if (clear_int)
 124                 val |= 1 << DB_EQ_CLR_SHIFT;
 125         val |= 1 << DB_EQ_EVNT_SHIFT;
 126         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 127         iowrite32(val, ctrl->db + DB_EQ_OFFSET);
 128 }
 129
 130 static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
 131                 bool arm, u16 num_popped)
 132 {
 133         u32 val = 0;
 134         val |= qid & DB_CQ_RING_ID_MASK;
 135         if (arm)
 136                 val |= 1 << DB_CQ_REARM_SHIFT;
 137         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 138         iowrite32(val, ctrl->db + DB_CQ_OFFSET);
 139 }
 140
 141
 142 static int be_mac_addr_set(struct net_device *netdev, void *p)
 143 {
 144         struct be_adapter *adapter = netdev_priv(netdev);
 145         struct sockaddr *addr = p;
 146         int status = 0;
 147
 148         if (netif_running(netdev)) {
 149                 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
 150                                 adapter->pmac_id);
 151                 if (status)
 152                         return status;
 153
 154                 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
 155                                 adapter->if_handle, &adapter->pmac_id);
 156         }
 157
 158         if (!status)
 159                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 160
 161         return status;
 162 }
 163
 164 static void netdev_stats_update(struct be_adapter *adapter)
 165 {
 166         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 167         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 168         struct be_port_rxf_stats *port_stats =
 169                         &rxf_stats->port[adapter->port_num];
 170         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 171         struct be_erx_stats *erx_stats = &hw_stats->erx;
 172
 173         dev_stats->rx_packets = port_stats->rx_total_frames;
 174         dev_stats->tx_packets = port_stats->tx_unicastframes +
 175                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 176         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 177                                 (u64) port_stats->rx_bytes_lsd;
 178         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 179                                 (u64) port_stats->tx_bytes_lsd;
 180
 181         /* bad pkts received */
 182         dev_stats->rx_errors = port_stats->rx_crc_errors +
 183                 port_stats->rx_alignment_symbol_errors +
 184                 port_stats->rx_in_range_errors +
 185                 port_stats->rx_out_range_errors +
 186                 port_stats->rx_frame_too_long +
 187                 port_stats->rx_dropped_too_small +
 188                 port_stats->rx_dropped_too_short +
 189                 port_stats->rx_dropped_header_too_small +
 190                 port_stats->rx_dropped_tcp_length +
 191                 port_stats->rx_dropped_runt +
 192                 port_stats->rx_tcp_checksum_errs +
 193                 port_stats->rx_ip_checksum_errs +
 194                 port_stats->rx_udp_checksum_errs;
 195
 196         /*  no space in linux buffers: best possible approximation */
 197         dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
 198
 199         /* detailed rx errors */
 200         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 201                 port_stats->rx_out_range_errors +
 202                 port_stats->rx_frame_too_long;
 203
 204         /* receive ring buffer overflow */
 205         dev_stats->rx_over_errors = 0;
 206
 207         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 208
 209         /* frame alignment errors */
 210         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 211
 212         /* receiver fifo overrun */
 213         /* drops_no_pbuf is no per i/f, it's per BE card */
 214         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 215                                         port_stats->rx_input_fifo_overflow +
 216                                         rxf_stats->rx_drops_no_pbuf;
 217         /* receiver missed packetd */
 218         dev_stats->rx_missed_errors = 0;
 219
 220         /*  packet transmit problems */
 221         dev_stats->tx_errors = 0;
 222
 223         /* no space available in linux */
 224         dev_stats->tx_dropped = 0;
 225
 226         dev_stats->multicast = port_stats->tx_multicastframes;
 227         dev_stats->collisions = 0;
 228
 229         /* detailed tx_errors */
 230         dev_stats->tx_aborted_errors = 0;
 231         dev_stats->tx_carrier_errors = 0;
 232         dev_stats->tx_fifo_errors = 0;
 233         dev_stats->tx_heartbeat_errors = 0;
 234         dev_stats->tx_window_errors = 0;
 235 }
 236
 237 static void be_link_status_update(struct be_adapter *adapter)
 238 {
 239         struct be_link_info *prev = &adapter->link;
 240         struct be_link_info now = { 0 };
 241         struct net_device *netdev = adapter->netdev;
 242
 243         be_cmd_link_status_query(&adapter->ctrl, &now);
 244
 245         /* If link came up or went down */
 246         if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
 247                         prev->speed == PHY_LINK_SPEED_ZERO)) {
 248                 if (now.speed == PHY_LINK_SPEED_ZERO) {
 249                         netif_stop_queue(netdev);
 250                         netif_carrier_off(netdev);
 251                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 252                 } else {
 253                         netif_start_queue(netdev);
 254                         netif_carrier_on(netdev);
 255                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 256                 }
 257         }
 258         *prev = now;
 259 }
 260
 261 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 262 static void be_rx_eqd_update(struct be_adapter *adapter)
 263 {
 264         struct be_ctrl_info *ctrl = &adapter->ctrl;
 265         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 266         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 267         ulong now = jiffies;
 268         u32 eqd;
 269
 270         if (!rx_eq->enable_aic)
 271                 return;
 272
 273         /* Wrapped around */
 274         if (time_before(now, stats->rx_fps_jiffies)) {
 275                 stats->rx_fps_jiffies = now;
 276                 return;
 277         }
 278
 279         /* Update once a second */
 280         if ((now - stats->rx_fps_jiffies) < HZ)
 281                 return;
 282
 283         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 284                         ((now - stats->rx_fps_jiffies) / HZ);
 285
 286         stats->rx_fps_jiffies = now;
 287         stats->be_prev_rx_frags = stats->be_rx_frags;
 288         eqd = stats->be_rx_fps / 110000;
 289         eqd = eqd << 3;
 290         if (eqd > rx_eq->max_eqd)
 291                 eqd = rx_eq->max_eqd;
 292         if (eqd < rx_eq->min_eqd)
 293                 eqd = rx_eq->min_eqd;
 294         if (eqd < 10)
 295                 eqd = 0;
 296         if (eqd != rx_eq->cur_eqd)
 297                 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
 298
 299         rx_eq->cur_eqd = eqd;
 300 }
 301
 302 static struct net_device_stats *be_get_stats(struct net_device *dev)
 303 {
 304         struct be_adapter *adapter = netdev_priv(dev);
 305
 306         return &adapter->stats.net_stats;
 307 }
 308
 309 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 310 {
 311         u64 rate = bytes;
 312
 313         do_div(rate, ticks / HZ);
 314         rate <<= 3;                     /* bytes/sec -> bits/sec */
 315         do_div(rate, 1000000ul);        /* MB/Sec */
 316
 317         return rate;
 318 }
 319
 320 static void be_tx_rate_update(struct be_adapter *adapter)
 321 {
 322         struct be_drvr_stats *stats = drvr_stats(adapter);
 323         ulong now = jiffies;
 324
 325         /* Wrapped around? */
 326         if (time_before(now, stats->be_tx_jiffies)) {
 327                 stats->be_tx_jiffies = now;
 328                 return;
 329         }
 330
 331         /* Update tx rate once in two seconds */
 332         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 333                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 334                                                   - stats->be_tx_bytes_prev,
 335                                                  now - stats->be_tx_jiffies);
 336                 stats->be_tx_jiffies = now;
 337                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 338         }
 339 }
 340
 341 static void be_tx_stats_update(struct be_adapter *adapter,
 342                         u32 wrb_cnt, u32 copied, bool stopped)
 343 {
 344         struct be_drvr_stats *stats = drvr_stats(adapter);
 345         stats->be_tx_reqs++;
 346         stats->be_tx_wrbs += wrb_cnt;
 347         stats->be_tx_bytes += copied;
 348         if (stopped)
 349                 stats->be_tx_stops++;
 350 }
 351
 352 /* Determine number of WRB entries needed to xmit data in an skb */
 353 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 354 {
 355         int cnt = (skb->len > skb->data_len);
 356
 357         cnt += skb_shinfo(skb)->nr_frags;
 358
 359         /* to account for hdr wrb */
 360         cnt++;
 361         if (cnt & 1) {
 362                 /* add a dummy to make it an even num */
 363                 cnt++;
 364                 *dummy = true;
 365         } else
 366                 *dummy = false;
 367         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 368         return cnt;
 369 }
 370
 371 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 372 {
 373         wrb->frag_pa_hi = upper_32_bits(addr);
 374         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 375         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 376 }
 377
 378 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 379                 bool vlan, u32 wrb_cnt, u32 len)
 380 {
 381         memset(hdr, 0, sizeof(*hdr));
 382
 383         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 384
 385         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 386                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 387                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 388                         hdr, skb_shinfo(skb)->gso_size);
 389         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 390                 if (is_tcp_pkt(skb))
 391                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 392                 else if (is_udp_pkt(skb))
 393                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 394         }
 395
 396         if (vlan && vlan_tx_tag_present(skb)) {
 397                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 398                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 399                         hdr, vlan_tx_tag_get(skb));
 400         }
 401
 402         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 403         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 404         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 405         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 406 }
 407
 408
 409 static int make_tx_wrbs(struct be_adapter *adapter,
 410                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 411 {
 412         u64 busaddr;
 413         u32 i, copied = 0;
 414         struct pci_dev *pdev = adapter->pdev;
 415         struct sk_buff *first_skb = skb;
 416         struct be_queue_info *txq = &adapter->tx_obj.q;
 417         struct be_eth_wrb *wrb;
 418         struct be_eth_hdr_wrb *hdr;
 419
 420         atomic_add(wrb_cnt, &txq->used);
 421         hdr = queue_head_node(txq);
 422         queue_head_inc(txq);
 423
 424         if (skb->len > skb->data_len) {
 425                 int len = skb->len - skb->data_len;
 426                 busaddr = pci_map_single(pdev, skb->data, len,
 427                                          PCI_DMA_TODEVICE);
 428                 wrb = queue_head_node(txq);
 429                 wrb_fill(wrb, busaddr, len);
 430                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 431                 queue_head_inc(txq);
 432                 copied += len;
 433         }
 434
 435         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 436                 struct skb_frag_struct *frag =
 437                         &skb_shinfo(skb)->frags[i];
 438                 busaddr = pci_map_page(pdev, frag->page,
 439                                        frag->page_offset,
 440                                        frag->size, PCI_DMA_TODEVICE);
 441                 wrb = queue_head_node(txq);
 442                 wrb_fill(wrb, busaddr, frag->size);
 443                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 444                 queue_head_inc(txq);
 445                 copied += frag->size;
 446         }
 447
 448         if (dummy_wrb) {
 449                 wrb = queue_head_node(txq);
 450                 wrb_fill(wrb, 0, 0);
 451                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 452                 queue_head_inc(txq);
 453         }
 454
 455         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 456                 wrb_cnt, copied);
 457         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 458
 459         return copied;
 460 }
 461
 462 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 463 {
 464         struct be_adapter *adapter = netdev_priv(netdev);
 465         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 466         struct be_queue_info *txq = &tx_obj->q;
 467         u32 wrb_cnt = 0, copied = 0;
 468         u32 start = txq->head;
 469         bool dummy_wrb, stopped = false;
 470
 471         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 472
 473         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 474
 475         /* record the sent skb in the sent_skb table */
 476         BUG_ON(tx_obj->sent_skb_list[start]);
 477         tx_obj->sent_skb_list[start] = skb;
 478
 479         /* Ensure that txq has space for the next skb; Else stop the queue
 480          * *BEFORE* ringing the tx doorbell, so that we serialze the
 481          * tx compls of the current transmit which'll wake up the queue
 482          */
 483         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 484                 netif_stop_queue(netdev);
 485                 stopped = true;
 486         }
 487
 488         be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
 489
 490         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 491         return NETDEV_TX_OK;
 492 }
 493
 494 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 495 {
 496         struct be_adapter *adapter = netdev_priv(netdev);
 497         if (new_mtu < BE_MIN_MTU ||
 498                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 499                 dev_info(&adapter->pdev->dev,
 500                         "MTU must be between %d and %d bytes\n",
 501                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 502                 return -EINVAL;
 503         }
 504         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 505                         netdev->mtu, new_mtu);
 506         netdev->mtu = new_mtu;
 507         return 0;
 508 }
 509
 510 /*
 511  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 512  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 513  * set the BE in promiscuous VLAN mode.
 514  */
 515 static void be_vid_config(struct net_device *netdev)
 516 {
 517         struct be_adapter *adapter = netdev_priv(netdev);
 518         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 519         u16 ntags = 0, i;
 520
 521         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 522                 /* Construct VLAN Table to give to HW */
 523                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 524                         if (adapter->vlan_tag[i]) {
 525                                 vtag[ntags] = cpu_to_le16(i);
 526                                 ntags++;
 527                         }
 528                 }
 529                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 530                         vtag, ntags, 1, 0);
 531         } else {
 532                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 533                         NULL, 0, 1, 1);
 534         }
 535 }
 536
 537 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 538 {
 539         struct be_adapter *adapter = netdev_priv(netdev);
 540         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 541         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 542         struct be_ctrl_info *ctrl = &adapter->ctrl;
 543
 544         be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
 545         be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
 546         adapter->vlan_grp = grp;
 547         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
 548         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
 549 }
 550
 551 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 552 {
 553         struct be_adapter *adapter = netdev_priv(netdev);
 554
 555         adapter->num_vlans++;
 556         adapter->vlan_tag[vid] = 1;
 557
 558         be_vid_config(netdev);
 559 }
 560
 561 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 562 {
 563         struct be_adapter *adapter = netdev_priv(netdev);
 564
 565         adapter->num_vlans--;
 566         adapter->vlan_tag[vid] = 0;
 567
 568         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 569         be_vid_config(netdev);
 570 }
 571
 572 static void be_set_multicast_filter(struct net_device *netdev)
 573 {
 574         struct be_adapter *adapter = netdev_priv(netdev);
 575         struct dev_mc_list *mc_ptr;
 576         u8 mac_addr[32][ETH_ALEN];
 577         int i = 0;
 578
 579         if (netdev->flags & IFF_ALLMULTI) {
 580                 /* set BE in Multicast promiscuous */
 581                 be_cmd_mcast_mac_set(&adapter->ctrl,
 582                                         adapter->if_handle, NULL, 0, true);
 583                 return;
 584         }
 585
 586         for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
 587                 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
 588                 if (++i >= 32) {
 589                         be_cmd_mcast_mac_set(&adapter->ctrl,
 590                                 adapter->if_handle, &mac_addr[0][0], i, false);
 591                         i = 0;
 592                 }
 593
 594         }
 595
 596         if (i) {
 597                 /* reset the promiscuous mode also. */
 598                 be_cmd_mcast_mac_set(&adapter->ctrl,
 599                         adapter->if_handle, &mac_addr[0][0], i, false);
 600         }
 601 }
 602
 603 static void be_set_multicast_list(struct net_device *netdev)
 604 {
 605         struct be_adapter *adapter = netdev_priv(netdev);
 606
 607         if (netdev->flags & IFF_PROMISC) {
 608                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
 609         } else {
 610                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
 611                 be_set_multicast_filter(netdev);
 612         }
 613 }
 614
 615 static void be_rx_rate_update(struct be_adapter *adapter)
 616 {
 617         struct be_drvr_stats *stats = drvr_stats(adapter);
 618         ulong now = jiffies;
 619
 620         /* Wrapped around */
 621         if (time_before(now, stats->be_rx_jiffies)) {
 622                 stats->be_rx_jiffies = now;
 623                 return;
 624         }
 625
 626         /* Update the rate once in two seconds */
 627         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 628                 return;
 629
 630         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 631                                           - stats->be_rx_bytes_prev,
 632                                          now - stats->be_rx_jiffies);
 633         stats->be_rx_jiffies = now;
 634         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 635 }
 636
 637 static void be_rx_stats_update(struct be_adapter *adapter,
 638                 u32 pktsize, u16 numfrags)
 639 {
 640         struct be_drvr_stats *stats = drvr_stats(adapter);
 641
 642         stats->be_rx_compl++;
 643         stats->be_rx_frags += numfrags;
 644         stats->be_rx_bytes += pktsize;
 645 }
 646
 647 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 648 {
 649         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 650
 651         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 652         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 653         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 654         if (ip_version) {
 655                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 656                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 657         }
 658         ipv6_chk = (ip_version && (tcpf || udpf));
 659
 660         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 661 }
 662
 663 static struct be_rx_page_info *
 664 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 665 {
 666         struct be_rx_page_info *rx_page_info;
 667         struct be_queue_info *rxq = &adapter->rx_obj.q;
 668
 669         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 670         BUG_ON(!rx_page_info->page);
 671
 672         if (rx_page_info->last_page_user)
 673                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 674                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 675
 676         atomic_dec(&rxq->used);
 677         return rx_page_info;
 678 }
 679
 680 /* Throwaway the data in the Rx completion */
 681 static void be_rx_compl_discard(struct be_adapter *adapter,
 682                         struct be_eth_rx_compl *rxcp)
 683 {
 684         struct be_queue_info *rxq = &adapter->rx_obj.q;
 685         struct be_rx_page_info *page_info;
 686         u16 rxq_idx, i, num_rcvd;
 687
 688         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 689         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 690
 691         for (i = 0; i < num_rcvd; i++) {
 692                 page_info = get_rx_page_info(adapter, rxq_idx);
 693                 put_page(page_info->page);
 694                 memset(page_info, 0, sizeof(*page_info));
 695                 index_inc(&rxq_idx, rxq->len);
 696         }
 697 }
 698
 699 /*
 700  * skb_fill_rx_data forms a complete skb for an ether frame
 701  * indicated by rxcp.
 702  */
 703 static void skb_fill_rx_data(struct be_adapter *adapter,
 704                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 705 {
 706         struct be_queue_info *rxq = &adapter->rx_obj.q;
 707         struct be_rx_page_info *page_info;
 708         u16 rxq_idx, i, num_rcvd;
 709         u32 pktsize, hdr_len, curr_frag_len;
 710         u8 *start;
 711
 712         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 713         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 714         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 715
 716         page_info = get_rx_page_info(adapter, rxq_idx);
 717
 718         start = page_address(page_info->page) + page_info->page_offset;
 719         prefetch(start);
 720
 721         /* Copy data in the first descriptor of this completion */
 722         curr_frag_len = min(pktsize, rx_frag_size);
 723
 724         /* Copy the header portion into skb_data */
 725         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 726         memcpy(skb->data, start, hdr_len);
 727         skb->len = curr_frag_len;
 728         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 729                 /* Complete packet has now been moved to data */
 730                 put_page(page_info->page);
 731                 skb->data_len = 0;
 732                 skb->tail += curr_frag_len;
 733         } else {
 734                 skb_shinfo(skb)->nr_frags = 1;
 735                 skb_shinfo(skb)->frags[0].page = page_info->page;
 736                 skb_shinfo(skb)->frags[0].page_offset =
 737                                         page_info->page_offset + hdr_len;
 738                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 739                 skb->data_len = curr_frag_len - hdr_len;
 740                 skb->tail += hdr_len;
 741         }
 742         memset(page_info, 0, sizeof(*page_info));
 743
 744         if (pktsize <= rx_frag_size) {
 745                 BUG_ON(num_rcvd != 1);
 746                 return;
 747         }
 748
 749         /* More frags present for this completion */
 750         pktsize -= curr_frag_len; /* account for above copied frag */
 751         for (i = 1; i < num_rcvd; i++) {
 752                 index_inc(&rxq_idx, rxq->len);
 753                 page_info = get_rx_page_info(adapter, rxq_idx);
 754
 755                 curr_frag_len = min(pktsize, rx_frag_size);
 756
 757                 skb_shinfo(skb)->frags[i].page = page_info->page;
 758                 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
 759                 skb_shinfo(skb)->frags[i].size = curr_frag_len;
 760                 skb->len += curr_frag_len;
 761                 skb->data_len += curr_frag_len;
 762                 skb_shinfo(skb)->nr_frags++;
 763                 pktsize -= curr_frag_len;
 764
 765                 memset(page_info, 0, sizeof(*page_info));
 766         }
 767
 768         be_rx_stats_update(adapter, pktsize, num_rcvd);
 769         return;
 770 }
 771
 772 /* Process the RX completion indicated by rxcp when LRO is disabled */
 773 static void be_rx_compl_process(struct be_adapter *adapter,
 774                         struct be_eth_rx_compl *rxcp)
 775 {
 776         struct sk_buff *skb;
 777         u32 vtp, vid;
 778
 779         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 780
 781         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 782         if (!skb) {
 783                 if (net_ratelimit())
 784                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 785                 be_rx_compl_discard(adapter, rxcp);
 786                 return;
 787         }
 788
 789         skb_reserve(skb, NET_IP_ALIGN);
 790
 791         skb_fill_rx_data(adapter, skb, rxcp);
 792
 793         if (do_pkt_csum(rxcp, adapter->rx_csum))
 794                 skb->ip_summed = CHECKSUM_NONE;
 795         else
 796                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 797
 798         skb->truesize = skb->len + sizeof(struct sk_buff);
 799         skb->protocol = eth_type_trans(skb, adapter->netdev);
 800         skb->dev = adapter->netdev;
 801
 802         if (vtp) {
 803                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 804                         kfree_skb(skb);
 805                         return;
 806                 }
 807                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 808                 vid = be16_to_cpu(vid);
 809                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 810         } else {
 811                 netif_receive_skb(skb);
 812         }
 813
 814         adapter->netdev->last_rx = jiffies;
 815
 816         return;
 817 }
 818
 819 /* Process the RX completion indicated by rxcp when LRO is enabled */
 820 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 821                         struct be_eth_rx_compl *rxcp)
 822 {
 823         struct be_rx_page_info *page_info;
 824         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 825         struct be_queue_info *rxq = &adapter->rx_obj.q;
 826         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 827         u16 i, rxq_idx = 0, vid;
 828
 829         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 830         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 831         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 832         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 833
 834         remaining = pkt_size;
 835         for (i = 0; i < num_rcvd; i++) {
 836                 page_info = get_rx_page_info(adapter, rxq_idx);
 837
 838                 curr_frag_len = min(remaining, rx_frag_size);
 839
 840                 rx_frags[i].page = page_info->page;
 841                 rx_frags[i].page_offset = page_info->page_offset;
 842                 rx_frags[i].size = curr_frag_len;
 843                 remaining -= curr_frag_len;
 844
 845                 index_inc(&rxq_idx, rxq->len);
 846
 847                 memset(page_info, 0, sizeof(*page_info));
 848         }
 849
 850         if (likely(!vlanf)) {
 851                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 852                                 pkt_size, NULL, 0);
 853         } else {
 854                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 855                 vid = be16_to_cpu(vid);
 856
 857                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 858                         return;
 859
 860                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 861                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 862                         vid, NULL, 0);
 863         }
 864
 865         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 866         return;
 867 }
 868
 869 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 870 {
 871         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 872
 873         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 874                 return NULL;
 875
 876         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 877
 878         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 879
 880         queue_tail_inc(&adapter->rx_obj.cq);
 881         return rxcp;
 882 }
 883
 884 static inline struct page *be_alloc_pages(u32 size)
 885 {
 886         gfp_t alloc_flags = GFP_ATOMIC;
 887         u32 order = get_order(size);
 888         if (order > 0)
 889                 alloc_flags |= __GFP_COMP;
 890         return  alloc_pages(alloc_flags, order);
 891 }
 892
 893 /*
 894  * Allocate a page, split it to fragments of size rx_frag_size and post as
 895  * receive buffers to BE
 896  */
 897 static void be_post_rx_frags(struct be_adapter *adapter)
 898 {
 899         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 900         struct be_rx_page_info *page_info = NULL;
 901         struct be_queue_info *rxq = &adapter->rx_obj.q;
 902         struct page *pagep = NULL;
 903         struct be_eth_rx_d *rxd;
 904         u64 page_dmaaddr = 0, frag_dmaaddr;
 905         u32 posted, page_offset = 0;
 906
 907         page_info = &page_info_tbl[rxq->head];
 908         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 909                 if (!pagep) {
 910                         pagep = be_alloc_pages(adapter->big_page_size);
 911                         if (unlikely(!pagep)) {
 912                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 913                                 break;
 914                         }
 915                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 916                                                 adapter->big_page_size,
 917                                                 PCI_DMA_FROMDEVICE);
 918                         page_info->page_offset = 0;
 919                 } else {
 920                         get_page(pagep);
 921                         page_info->page_offset = page_offset + rx_frag_size;
 922                 }
 923                 page_offset = page_info->page_offset;
 924                 page_info->page = pagep;
 925                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 926                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 927
 928                 rxd = queue_head_node(rxq);
 929                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 930                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 931                 queue_head_inc(rxq);
 932
 933                 /* Any space left in the current big page for another frag? */
 934                 if ((page_offset + rx_frag_size + rx_frag_size) >
 935                                         adapter->big_page_size) {
 936                         pagep = NULL;
 937                         page_info->last_page_user = true;
 938                 }
 939                 page_info = &page_info_tbl[rxq->head];
 940         }
 941         if (pagep)
 942                 page_info->last_page_user = true;
 943
 944         if (posted) {
 945                 atomic_add(posted, &rxq->used);
 946                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 947         } else if (atomic_read(&rxq->used) == 0) {
 948                 /* Let be_worker replenish when memory is available */
 949                 adapter->rx_post_starved = true;
 950         }
 951
 952         return;
 953 }
 954
 955 static struct be_eth_tx_compl *
 956 be_tx_compl_get(struct be_adapter *adapter)
 957 {
 958         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 959         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 960
 961         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 962                 return NULL;
 963
 964         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 965
 966         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 967
 968         queue_tail_inc(tx_cq);
 969         return txcp;
 970 }
 971
 972 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 973 {
 974         struct be_queue_info *txq = &adapter->tx_obj.q;
 975         struct be_eth_wrb *wrb;
 976         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 977         struct sk_buff *sent_skb;
 978         u64 busaddr;
 979         u16 cur_index, num_wrbs = 0;
 980
 981         cur_index = txq->tail;
 982         sent_skb = sent_skbs[cur_index];
 983         BUG_ON(!sent_skb);
 984         sent_skbs[cur_index] = NULL;
 985
 986         do {
 987                 cur_index = txq->tail;
 988                 wrb = queue_tail_node(txq);
 989                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 990                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 991                 if (busaddr != 0) {
 992                         pci_unmap_single(adapter->pdev, busaddr,
 993                                 wrb->frag_len, PCI_DMA_TODEVICE);
 994                 }
 995                 num_wrbs++;
 996                 queue_tail_inc(txq);
 997         } while (cur_index != last_index);
 998
 999         atomic_sub(num_wrbs, &txq->used);
1000
1001         kfree_skb(sent_skb);
1002 }
1003
1004 static void be_rx_q_clean(struct be_adapter *adapter)
1005 {
1006         struct be_rx_page_info *page_info;
1007         struct be_queue_info *rxq = &adapter->rx_obj.q;
1008         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1009         struct be_eth_rx_compl *rxcp;
1010         u16 tail;
1011
1012         /* First cleanup pending rx completions */
1013         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1014                 be_rx_compl_discard(adapter, rxcp);
1015                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1016         }
1017
1018         /* Then free posted rx buffer that were not used */
1019         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1020         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1021                 page_info = get_rx_page_info(adapter, tail);
1022                 put_page(page_info->page);
1023                 memset(page_info, 0, sizeof(*page_info));
1024         }
1025         BUG_ON(atomic_read(&rxq->used));
1026 }
1027
1028 static void be_tx_q_clean(struct be_adapter *adapter)
1029 {
1030         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1031         struct sk_buff *sent_skb;
1032         struct be_queue_info *txq = &adapter->tx_obj.q;
1033         u16 last_index;
1034         bool dummy_wrb;
1035
1036         while (atomic_read(&txq->used)) {
1037                 sent_skb = sent_skbs[txq->tail];
1038                 last_index = txq->tail;
1039                 index_adv(&last_index,
1040                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1041                 be_tx_compl_process(adapter, last_index);
1042         }
1043 }
1044
1045 static void be_tx_queues_destroy(struct be_adapter *adapter)
1046 {
1047         struct be_queue_info *q;
1048
1049         q = &adapter->tx_obj.q;
1050         if (q->created)
1051                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1052         be_queue_free(adapter, q);
1053
1054         q = &adapter->tx_obj.cq;
1055         if (q->created)
1056                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1057         be_queue_free(adapter, q);
1058
1059         /* No more tx completions can be rcvd now; clean up if there are
1060          * any pending completions or pending tx requests */
1061         be_tx_q_clean(adapter);
1062
1063         q = &adapter->tx_eq.q;
1064         if (q->created)
1065                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1066         be_queue_free(adapter, q);
1067 }
1068
1069 static int be_tx_queues_create(struct be_adapter *adapter)
1070 {
1071         struct be_queue_info *eq, *q, *cq;
1072
1073         adapter->tx_eq.max_eqd = 0;
1074         adapter->tx_eq.min_eqd = 0;
1075         adapter->tx_eq.cur_eqd = 96;
1076         adapter->tx_eq.enable_aic = false;
1077         /* Alloc Tx Event queue */
1078         eq = &adapter->tx_eq.q;
1079         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1080                 return -1;
1081
1082         /* Ask BE to create Tx Event queue */
1083         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1084                 goto tx_eq_free;
1085         /* Alloc TX eth compl queue */
1086         cq = &adapter->tx_obj.cq;
1087         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1088                         sizeof(struct be_eth_tx_compl)))
1089                 goto tx_eq_destroy;
1090
1091         /* Ask BE to create Tx eth compl queue */
1092         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1093                 goto tx_cq_free;
1094
1095         /* Alloc TX eth queue */
1096         q = &adapter->tx_obj.q;
1097         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1098                 goto tx_cq_destroy;
1099
1100         /* Ask BE to create Tx eth queue */
1101         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1102                 goto tx_q_free;
1103         return 0;
1104
1105 tx_q_free:
1106         be_queue_free(adapter, q);
1107 tx_cq_destroy:
1108         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1109 tx_cq_free:
1110         be_queue_free(adapter, cq);
1111 tx_eq_destroy:
1112         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1113 tx_eq_free:
1114         be_queue_free(adapter, eq);
1115         return -1;
1116 }
1117
1118 static void be_rx_queues_destroy(struct be_adapter *adapter)
1119 {
1120         struct be_queue_info *q;
1121
1122         q = &adapter->rx_obj.q;
1123         if (q->created) {
1124                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1125                 be_rx_q_clean(adapter);
1126         }
1127         be_queue_free(adapter, q);
1128
1129         q = &adapter->rx_obj.cq;
1130         if (q->created)
1131                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1132         be_queue_free(adapter, q);
1133
1134         q = &adapter->rx_eq.q;
1135         if (q->created)
1136                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1137         be_queue_free(adapter, q);
1138 }
1139
1140 static int be_rx_queues_create(struct be_adapter *adapter)
1141 {
1142         struct be_queue_info *eq, *q, *cq;
1143         int rc;
1144
1145         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1146         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1147         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1148         adapter->rx_eq.min_eqd = 0;
1149         adapter->rx_eq.cur_eqd = 0;
1150         adapter->rx_eq.enable_aic = true;
1151
1152         /* Alloc Rx Event queue */
1153         eq = &adapter->rx_eq.q;
1154         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1155                                 sizeof(struct be_eq_entry));
1156         if (rc)
1157                 return rc;
1158
1159         /* Ask BE to create Rx Event queue */
1160         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1161         if (rc)
1162                 goto rx_eq_free;
1163
1164         /* Alloc RX eth compl queue */
1165         cq = &adapter->rx_obj.cq;
1166         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1167                         sizeof(struct be_eth_rx_compl));
1168         if (rc)
1169                 goto rx_eq_destroy;
1170
1171         /* Ask BE to create Rx eth compl queue */
1172         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1173         if (rc)
1174                 goto rx_cq_free;
1175
1176         /* Alloc RX eth queue */
1177         q = &adapter->rx_obj.q;
1178         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1179         if (rc)
1180                 goto rx_cq_destroy;
1181
1182         /* Ask BE to create Rx eth queue */
1183         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1184                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1185         if (rc)
1186                 goto rx_q_free;
1187
1188         return 0;
1189 rx_q_free:
1190         be_queue_free(adapter, q);
1191 rx_cq_destroy:
1192         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1193 rx_cq_free:
1194         be_queue_free(adapter, cq);
1195 rx_eq_destroy:
1196         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1197 rx_eq_free:
1198         be_queue_free(adapter, eq);
1199         return rc;
1200 }
1201 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1202 {
1203         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1204         u32 evt = entry->evt;
1205
1206         if (!evt)
1207                 return false;
1208
1209         evt = le32_to_cpu(evt);
1210         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1211         entry->evt = 0;
1212         queue_tail_inc(&eq_obj->q);
1213         return true;
1214 }
1215
1216 static int event_handle(struct be_ctrl_info *ctrl,
1217                         struct be_eq_obj *eq_obj)
1218 {
1219         u16 rid = 0, num = 0;
1220
1221         while (event_get(eq_obj, &rid))
1222                 num++;
1223
1224         /* We can see an interrupt and no event */
1225         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1226         if (num)
1227                 napi_schedule(&eq_obj->napi);
1228
1229         return num;
1230 }
1231
1232 static irqreturn_t be_intx(int irq, void *dev)
1233 {
1234         struct be_adapter *adapter = dev;
1235         struct be_ctrl_info *ctrl = &adapter->ctrl;
1236         int rx, tx;
1237
1238         tx = event_handle(ctrl, &adapter->tx_eq);
1239         rx = event_handle(ctrl, &adapter->rx_eq);
1240
1241         if (rx || tx)
1242                 return IRQ_HANDLED;
1243         else
1244                 return IRQ_NONE;
1245 }
1246
1247 static irqreturn_t be_msix_rx(int irq, void *dev)
1248 {
1249         struct be_adapter *adapter = dev;
1250
1251         event_handle(&adapter->ctrl, &adapter->rx_eq);
1252
1253         return IRQ_HANDLED;
1254 }
1255
1256 static irqreturn_t be_msix_tx(int irq, void *dev)
1257 {
1258         struct be_adapter *adapter = dev;
1259
1260         event_handle(&adapter->ctrl, &adapter->tx_eq);
1261
1262         return IRQ_HANDLED;
1263 }
1264
1265 static inline bool do_lro(struct be_adapter *adapter,
1266                         struct be_eth_rx_compl *rxcp)
1267 {
1268         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1269         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1270
1271         if (err)
1272                 drvr_stats(adapter)->be_rxcp_err++;
1273
1274         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1275                 false : true;
1276 }
1277
1278 int be_poll_rx(struct napi_struct *napi, int budget)
1279 {
1280         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1281         struct be_adapter *adapter =
1282                 container_of(rx_eq, struct be_adapter, rx_eq);
1283         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1284         struct be_eth_rx_compl *rxcp;
1285         u32 work_done;
1286
1287         for (work_done = 0; work_done < budget; work_done++) {
1288                 rxcp = be_rx_compl_get(adapter);
1289                 if (!rxcp)
1290                         break;
1291
1292                 if (do_lro(adapter, rxcp))
1293                         be_rx_compl_process_lro(adapter, rxcp);
1294                 else
1295                         be_rx_compl_process(adapter, rxcp);
1296         }
1297
1298         lro_flush_all(&adapter->rx_obj.lro_mgr);
1299
1300         /* Refill the queue */
1301         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1302                 be_post_rx_frags(adapter);
1303
1304         /* All consumed */
1305         if (work_done < budget) {
1306                 napi_complete(napi);
1307                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1308         } else {
1309                 /* More to be consumed; continue with interrupts disabled */
1310                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1311         }
1312         return work_done;
1313 }
1314
1315 /* For TX we don't honour budget; consume everything */
1316 int be_poll_tx(struct napi_struct *napi, int budget)
1317 {
1318         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1319         struct be_adapter *adapter =
1320                 container_of(tx_eq, struct be_adapter, tx_eq);
1321         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1322         struct be_queue_info *tx_cq = &tx_obj->cq;
1323         struct be_queue_info *txq = &tx_obj->q;
1324         struct be_eth_tx_compl *txcp;
1325         u32 num_cmpl = 0;
1326         u16 end_idx;
1327
1328         while ((txcp = be_tx_compl_get(adapter))) {
1329                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1330                                         wrb_index, txcp);
1331                 be_tx_compl_process(adapter, end_idx);
1332                 num_cmpl++;
1333         }
1334
1335         /* As Tx wrbs have been freed up, wake up netdev queue if
1336          * it was stopped due to lack of tx wrbs.
1337          */
1338         if (netif_queue_stopped(adapter->netdev) &&
1339                         atomic_read(&txq->used) < txq->len / 2) {
1340                 netif_wake_queue(adapter->netdev);
1341         }
1342
1343         napi_complete(napi);
1344
1345         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1346
1347         drvr_stats(adapter)->be_tx_events++;
1348         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1349
1350         return 1;
1351 }
1352
1353 static void be_worker(struct work_struct *work)
1354 {
1355         struct be_adapter *adapter =
1356                 container_of(work, struct be_adapter, work.work);
1357         int status;
1358
1359         /* Check link */
1360         be_link_status_update(adapter);
1361
1362         /* Get Stats */
1363         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1364         if (!status)
1365                 netdev_stats_update(adapter);
1366
1367         /* Set EQ delay */
1368         be_rx_eqd_update(adapter);
1369
1370         be_tx_rate_update(adapter);
1371         be_rx_rate_update(adapter);
1372
1373         if (adapter->rx_post_starved) {
1374                 adapter->rx_post_starved = false;
1375                 be_post_rx_frags(adapter);
1376         }
1377
1378         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1379 }
1380
1381 static void be_msix_enable(struct be_adapter *adapter)
1382 {
1383         int i, status;
1384
1385         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1386                 adapter->msix_entries[i].entry = i;
1387
1388         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1389                 BE_NUM_MSIX_VECTORS);
1390         if (status == 0)
1391                 adapter->msix_enabled = true;
1392         return;
1393 }
1394
1395 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1396 {
1397         return adapter->msix_entries[eq_id -
1398                         8 * adapter->ctrl.pci_func].vector;
1399 }
1400
1401 static int be_msix_register(struct be_adapter *adapter)
1402 {
1403         struct net_device *netdev = adapter->netdev;
1404         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1405         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1406         int status, vec;
1407
1408         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1409         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1410         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1411         if (status)
1412                 goto err;
1413
1414         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1415         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1416         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1417         if (status) { /* Free TX IRQ */
1418                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1419                 free_irq(vec, adapter);
1420                 goto err;
1421         }
1422         return 0;
1423 err:
1424         dev_warn(&adapter->pdev->dev,
1425                 "MSIX Request IRQ failed - err %d\n", status);
1426         pci_disable_msix(adapter->pdev);
1427         adapter->msix_enabled = false;
1428         return status;
1429 }
1430
1431 static int be_irq_register(struct be_adapter *adapter)
1432 {
1433         struct net_device *netdev = adapter->netdev;
1434         int status;
1435
1436         if (adapter->msix_enabled) {
1437                 status = be_msix_register(adapter);
1438                 if (status == 0)
1439                         goto done;
1440         }
1441
1442         /* INTx */
1443         netdev->irq = adapter->pdev->irq;
1444         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1445                         adapter);
1446         if (status) {
1447                 dev_err(&adapter->pdev->dev,
1448                         "INTx request IRQ failed - err %d\n", status);
1449                 return status;
1450         }
1451 done:
1452         adapter->isr_registered = true;
1453         return 0;
1454 }
1455
1456 static void be_irq_unregister(struct be_adapter *adapter)
1457 {
1458         struct net_device *netdev = adapter->netdev;
1459         int vec;
1460
1461         if (!adapter->isr_registered)
1462                 return;
1463
1464         /* INTx */
1465         if (!adapter->msix_enabled) {
1466                 free_irq(netdev->irq, adapter);
1467                 goto done;
1468         }
1469
1470         /* MSIx */
1471         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1472         free_irq(vec, adapter);
1473         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1474         free_irq(vec, adapter);
1475 done:
1476         adapter->isr_registered = false;
1477         return;
1478 }
1479
1480 static int be_open(struct net_device *netdev)
1481 {
1482         struct be_adapter *adapter = netdev_priv(netdev);
1483         struct be_ctrl_info *ctrl = &adapter->ctrl;
1484         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1485         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1486         u32 if_flags;
1487         int status;
1488
1489         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1490                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1491                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1492         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1493                         false/* pmac_invalid */, &adapter->if_handle,
1494                         &adapter->pmac_id);
1495         if (status != 0)
1496                 goto do_none;
1497
1498         be_vid_config(netdev);
1499
1500         status = be_cmd_set_flow_control(ctrl, true, true);
1501         if (status != 0)
1502                 goto if_destroy;
1503
1504         status = be_tx_queues_create(adapter);
1505         if (status != 0)
1506                 goto if_destroy;
1507
1508         status = be_rx_queues_create(adapter);
1509         if (status != 0)
1510                 goto tx_qs_destroy;
1511
1512         /* First time posting */
1513         be_post_rx_frags(adapter);
1514
1515         napi_enable(&rx_eq->napi);
1516         napi_enable(&tx_eq->napi);
1517
1518         be_irq_register(adapter);
1519
1520         be_intr_set(ctrl, true);
1521
1522         /* The evt queues are created in the unarmed state; arm them */
1523         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1524         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1525
1526         /* The compl queues are created in the unarmed state; arm them */
1527         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1528         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1529
1530         be_link_status_update(adapter);
1531
1532         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1533         return 0;
1534
1535 tx_qs_destroy:
1536         be_tx_queues_destroy(adapter);
1537 if_destroy:
1538         be_cmd_if_destroy(ctrl, adapter->if_handle);
1539 do_none:
1540         return status;
1541 }
1542
1543 static int be_close(struct net_device *netdev)
1544 {
1545         struct be_adapter *adapter = netdev_priv(netdev);
1546         struct be_ctrl_info *ctrl = &adapter->ctrl;
1547         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1548         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1549         int vec;
1550
1551         cancel_delayed_work_sync(&adapter->work);
1552
1553         netif_stop_queue(netdev);
1554         netif_carrier_off(netdev);
1555         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1556
1557         be_intr_set(ctrl, false);
1558
1559         if (adapter->msix_enabled) {
1560                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1561                 synchronize_irq(vec);
1562                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1563                 synchronize_irq(vec);
1564         } else {
1565                 synchronize_irq(netdev->irq);
1566         }
1567         be_irq_unregister(adapter);
1568
1569         napi_disable(&rx_eq->napi);
1570         napi_disable(&tx_eq->napi);
1571
1572         be_rx_queues_destroy(adapter);
1573         be_tx_queues_destroy(adapter);
1574
1575         be_cmd_if_destroy(ctrl, adapter->if_handle);
1576         return 0;
1577 }
1578
1579 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1580                                 void **ip_hdr, void **tcpudp_hdr,
1581                                 u64 *hdr_flags, void *priv)
1582 {
1583         struct ethhdr *eh;
1584         struct vlan_ethhdr *veh;
1585         struct iphdr *iph;
1586         u8 *va = page_address(frag->page) + frag->page_offset;
1587         unsigned long ll_hlen;
1588
1589         prefetch(va);
1590         eh = (struct ethhdr *)va;
1591         *mac_hdr = eh;
1592         ll_hlen = ETH_HLEN;
1593         if (eh->h_proto != htons(ETH_P_IP)) {
1594                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1595                         veh = (struct vlan_ethhdr *)va;
1596                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1597                                 return -1;
1598
1599                         ll_hlen += VLAN_HLEN;
1600                 } else {
1601                         return -1;
1602                 }
1603         }
1604         *hdr_flags = LRO_IPV4;
1605         iph = (struct iphdr *)(va + ll_hlen);
1606         *ip_hdr = iph;
1607         if (iph->protocol != IPPROTO_TCP)
1608                 return -1;
1609         *hdr_flags |= LRO_TCP;
1610         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1611
1612         return 0;
1613 }
1614
1615 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1616 {
1617         struct net_lro_mgr *lro_mgr;
1618
1619         lro_mgr = &adapter->rx_obj.lro_mgr;
1620         lro_mgr->dev = netdev;
1621         lro_mgr->features = LRO_F_NAPI;
1622         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1623         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1624         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1625         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1626         lro_mgr->get_frag_header = be_get_frag_header;
1627         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1628 }
1629
1630 static struct net_device_ops be_netdev_ops = {
1631         .ndo_open               = be_open,
1632         .ndo_stop               = be_close,
1633         .ndo_start_xmit         = be_xmit,
1634         .ndo_get_stats          = be_get_stats,
1635         .ndo_set_rx_mode        = be_set_multicast_list,
1636         .ndo_set_mac_address    = be_mac_addr_set,
1637         .ndo_change_mtu         = be_change_mtu,
1638         .ndo_validate_addr      = eth_validate_addr,
1639         .ndo_vlan_rx_register   = be_vlan_register,
1640         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1641         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1642 };
1643
1644 static void be_netdev_init(struct net_device *netdev)
1645 {
1646         struct be_adapter *adapter = netdev_priv(netdev);
1647
1648         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1649                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1650                 NETIF_F_IPV6_CSUM;
1651
1652         netdev->flags |= IFF_MULTICAST;
1653
1654         adapter->rx_csum = true;
1655
1656         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1657
1658         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1659
1660         be_lro_init(adapter, netdev);
1661
1662         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1663                 BE_NAPI_WEIGHT);
1664         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1665                 BE_NAPI_WEIGHT);
1666
1667         netif_carrier_off(netdev);
1668         netif_stop_queue(netdev);
1669 }
1670
1671 static void be_unmap_pci_bars(struct be_adapter *adapter)
1672 {
1673         struct be_ctrl_info *ctrl = &adapter->ctrl;
1674         if (ctrl->csr)
1675                 iounmap(ctrl->csr);
1676         if (ctrl->db)
1677                 iounmap(ctrl->db);
1678         if (ctrl->pcicfg)
1679                 iounmap(ctrl->pcicfg);
1680 }
1681
1682 static int be_map_pci_bars(struct be_adapter *adapter)
1683 {
1684         u8 __iomem *addr;
1685
1686         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1687                         pci_resource_len(adapter->pdev, 2));
1688         if (addr == NULL)
1689                 return -ENOMEM;
1690         adapter->ctrl.csr = addr;
1691
1692         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1693                         128 * 1024);
1694         if (addr == NULL)
1695                 goto pci_map_err;
1696         adapter->ctrl.db = addr;
1697
1698         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1699                         pci_resource_len(adapter->pdev, 1));
1700         if (addr == NULL)
1701                 goto pci_map_err;
1702         adapter->ctrl.pcicfg = addr;
1703
1704         return 0;
1705 pci_map_err:
1706         be_unmap_pci_bars(adapter);
1707         return -ENOMEM;
1708 }
1709
1710
1711 static void be_ctrl_cleanup(struct be_adapter *adapter)
1712 {
1713         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1714
1715         be_unmap_pci_bars(adapter);
1716
1717         if (mem->va)
1718                 pci_free_consistent(adapter->pdev, mem->size,
1719                         mem->va, mem->dma);
1720 }
1721
1722 /* Initialize the mbox required to send cmds to BE */
1723 static int be_ctrl_init(struct be_adapter *adapter)
1724 {
1725         struct be_ctrl_info *ctrl = &adapter->ctrl;
1726         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1727         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1728         int status;
1729         u32 val;
1730
1731         status = be_map_pci_bars(adapter);
1732         if (status)
1733                 return status;
1734
1735         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1736         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1737                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1738         if (!mbox_mem_alloc->va) {
1739                 be_unmap_pci_bars(adapter);
1740                 return -1;
1741         }
1742         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1743         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1744         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1745         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1746         spin_lock_init(&ctrl->cmd_lock);
1747
1748         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1749         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1750                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1751         return 0;
1752 }
1753
1754 static void be_stats_cleanup(struct be_adapter *adapter)
1755 {
1756         struct be_stats_obj *stats = &adapter->stats;
1757         struct be_dma_mem *cmd = &stats->cmd;
1758
1759         if (cmd->va)
1760                 pci_free_consistent(adapter->pdev, cmd->size,
1761                         cmd->va, cmd->dma);
1762 }
1763
1764 static int be_stats_init(struct be_adapter *adapter)
1765 {
1766         struct be_stats_obj *stats = &adapter->stats;
1767         struct be_dma_mem *cmd = &stats->cmd;
1768
1769         cmd->size = sizeof(struct be_cmd_req_get_stats);
1770         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1771         if (cmd->va == NULL)
1772                 return -1;
1773         return 0;
1774 }
1775
1776 static void __devexit be_remove(struct pci_dev *pdev)
1777 {
1778         struct be_adapter *adapter = pci_get_drvdata(pdev);
1779         if (!adapter)
1780                 return;
1781
1782         unregister_netdev(adapter->netdev);
1783
1784         be_stats_cleanup(adapter);
1785
1786         be_ctrl_cleanup(adapter);
1787
1788         if (adapter->msix_enabled) {
1789                 pci_disable_msix(adapter->pdev);
1790                 adapter->msix_enabled = false;
1791         }
1792
1793         pci_set_drvdata(pdev, NULL);
1794         pci_release_regions(pdev);
1795         pci_disable_device(pdev);
1796
1797         free_netdev(adapter->netdev);
1798 }
1799
1800 static int be_hw_up(struct be_adapter *adapter)
1801 {
1802         struct be_ctrl_info *ctrl = &adapter->ctrl;
1803         int status;
1804
1805         status = be_cmd_POST(ctrl);
1806         if (status)
1807                 return status;
1808
1809         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1810         if (status)
1811                 return status;
1812
1813         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1814         return status;
1815 }
1816
1817 static int __devinit be_probe(struct pci_dev *pdev,
1818                         const struct pci_device_id *pdev_id)
1819 {
1820         int status = 0;
1821         struct be_adapter *adapter;
1822         struct net_device *netdev;
1823         struct be_ctrl_info *ctrl;
1824         u8 mac[ETH_ALEN];
1825
1826         status = pci_enable_device(pdev);
1827         if (status)
1828                 goto do_none;
1829
1830         status = pci_request_regions(pdev, DRV_NAME);
1831         if (status)
1832                 goto disable_dev;
1833         pci_set_master(pdev);
1834
1835         netdev = alloc_etherdev(sizeof(struct be_adapter));
1836         if (netdev == NULL) {
1837                 status = -ENOMEM;
1838                 goto rel_reg;
1839         }
1840         adapter = netdev_priv(netdev);
1841         adapter->pdev = pdev;
1842         pci_set_drvdata(pdev, adapter);
1843         adapter->netdev = netdev;
1844
1845         be_msix_enable(adapter);
1846
1847         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1848         if (!status) {
1849                 netdev->features |= NETIF_F_HIGHDMA;
1850         } else {
1851                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1852                 if (status) {
1853                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1854                         goto free_netdev;
1855                 }
1856         }
1857
1858         ctrl = &adapter->ctrl;
1859         status = be_ctrl_init(adapter);
1860         if (status)
1861                 goto free_netdev;
1862
1863         status = be_stats_init(adapter);
1864         if (status)
1865                 goto ctrl_clean;
1866
1867         status = be_hw_up(adapter);
1868         if (status)
1869                 goto stats_clean;
1870
1871         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1872                         true /* permanent */, 0);
1873         if (status)
1874                 goto stats_clean;
1875         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1876
1877         INIT_DELAYED_WORK(&adapter->work, be_worker);
1878         be_netdev_init(netdev);
1879         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1880
1881         status = register_netdev(netdev);
1882         if (status != 0)
1883                 goto stats_clean;
1884
1885         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1886         return 0;
1887
1888 stats_clean:
1889         be_stats_cleanup(adapter);
1890 ctrl_clean:
1891         be_ctrl_cleanup(adapter);
1892 free_netdev:
1893         free_netdev(adapter->netdev);
1894 rel_reg:
1895         pci_release_regions(pdev);
1896 disable_dev:
1897         pci_disable_device(pdev);
1898 do_none:
1899         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1900         return status;
1901 }
1902
1903 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1904 {
1905         struct be_adapter *adapter = pci_get_drvdata(pdev);
1906         struct net_device *netdev =  adapter->netdev;
1907
1908         netif_device_detach(netdev);
1909         if (netif_running(netdev)) {
1910                 rtnl_lock();
1911                 be_close(netdev);
1912                 rtnl_unlock();
1913         }
1914
1915         pci_save_state(pdev);
1916         pci_disable_device(pdev);
1917         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1918         return 0;
1919 }
1920
1921 static int be_resume(struct pci_dev *pdev)
1922 {
1923         int status = 0;
1924         struct be_adapter *adapter = pci_get_drvdata(pdev);
1925         struct net_device *netdev =  adapter->netdev;
1926
1927         netif_device_detach(netdev);
1928
1929         status = pci_enable_device(pdev);
1930         if (status)
1931                 return status;
1932
1933         pci_set_power_state(pdev, 0);
1934         pci_restore_state(pdev);
1935
1936         if (netif_running(netdev)) {
1937                 rtnl_lock();
1938                 be_open(netdev);
1939                 rtnl_unlock();
1940         }
1941         netif_device_attach(netdev);
1942         return 0;
1943 }
1944
1945 static struct pci_driver be_driver = {
1946         .name = DRV_NAME,
1947         .id_table = be_dev_ids,
1948         .probe = be_probe,
1949         .remove = be_remove,
1950         .suspend = be_suspend,
1951         .resume = be_resume
1952 };
1953
1954 static int __init be_init_module(void)
1955 {
1956         if (rx_frag_size != 8192 && rx_frag_size != 4096
1957                 && rx_frag_size != 2048) {
1958                 printk(KERN_WARNING DRV_NAME
1959                         " : Module param rx_frag_size must be 2048/4096/8192."
1960                         " Using 2048\n");
1961                 rx_frag_size = 2048;
1962         }
1963         /* Ensure rx_frag_size is aligned to chache line */
1964         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1965                 printk(KERN_WARNING DRV_NAME
1966                         " : Bad module param rx_frag_size. Using 2048\n");
1967                 rx_frag_size = 2048;
1968         }
1969
1970         return pci_register_driver(&be_driver);
1971 }
1972 module_init(be_init_module);
1973
1974 static void __exit be_exit_module(void)
1975 {
1976         pci_unregister_driver(&be_driver);
1977 }
1978 module_exit(be_exit_module);