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                 goto done;
 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 done:
 769         be_rx_stats_update(adapter, pktsize, num_rcvd);
 770         return;
 771 }
 772
 773 /* Process the RX completion indicated by rxcp when LRO is disabled */
 774 static void be_rx_compl_process(struct be_adapter *adapter,
 775                         struct be_eth_rx_compl *rxcp)
 776 {
 777         struct sk_buff *skb;
 778         u32 vtp, vid;
 779
 780         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 781
 782         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 783         if (!skb) {
 784                 if (net_ratelimit())
 785                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 786                 be_rx_compl_discard(adapter, rxcp);
 787                 return;
 788         }
 789
 790         skb_reserve(skb, NET_IP_ALIGN);
 791
 792         skb_fill_rx_data(adapter, skb, rxcp);
 793
 794         if (do_pkt_csum(rxcp, adapter->rx_csum))
 795                 skb->ip_summed = CHECKSUM_NONE;
 796         else
 797                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 798
 799         skb->truesize = skb->len + sizeof(struct sk_buff);
 800         skb->protocol = eth_type_trans(skb, adapter->netdev);
 801         skb->dev = adapter->netdev;
 802
 803         if (vtp) {
 804                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 805                         kfree_skb(skb);
 806                         return;
 807                 }
 808                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 809                 vid = be16_to_cpu(vid);
 810                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 811         } else {
 812                 netif_receive_skb(skb);
 813         }
 814
 815         adapter->netdev->last_rx = jiffies;
 816
 817         return;
 818 }
 819
 820 /* Process the RX completion indicated by rxcp when LRO is enabled */
 821 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 822                         struct be_eth_rx_compl *rxcp)
 823 {
 824         struct be_rx_page_info *page_info;
 825         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 826         struct be_queue_info *rxq = &adapter->rx_obj.q;
 827         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 828         u16 i, rxq_idx = 0, vid;
 829
 830         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 831         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 832         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 833         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 834
 835         remaining = pkt_size;
 836         for (i = 0; i < num_rcvd; i++) {
 837                 page_info = get_rx_page_info(adapter, rxq_idx);
 838
 839                 curr_frag_len = min(remaining, rx_frag_size);
 840
 841                 rx_frags[i].page = page_info->page;
 842                 rx_frags[i].page_offset = page_info->page_offset;
 843                 rx_frags[i].size = curr_frag_len;
 844                 remaining -= curr_frag_len;
 845
 846                 index_inc(&rxq_idx, rxq->len);
 847
 848                 memset(page_info, 0, sizeof(*page_info));
 849         }
 850
 851         if (likely(!vlanf)) {
 852                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 853                                 pkt_size, NULL, 0);
 854         } else {
 855                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 856                 vid = be16_to_cpu(vid);
 857
 858                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 859                         return;
 860
 861                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 862                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 863                         vid, NULL, 0);
 864         }
 865
 866         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 867         return;
 868 }
 869
 870 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 871 {
 872         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 873
 874         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 875                 return NULL;
 876
 877         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 878
 879         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 880
 881         queue_tail_inc(&adapter->rx_obj.cq);
 882         return rxcp;
 883 }
 884
 885 static inline struct page *be_alloc_pages(u32 size)
 886 {
 887         gfp_t alloc_flags = GFP_ATOMIC;
 888         u32 order = get_order(size);
 889         if (order > 0)
 890                 alloc_flags |= __GFP_COMP;
 891         return  alloc_pages(alloc_flags, order);
 892 }
 893
 894 /*
 895  * Allocate a page, split it to fragments of size rx_frag_size and post as
 896  * receive buffers to BE
 897  */
 898 static void be_post_rx_frags(struct be_adapter *adapter)
 899 {
 900         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 901         struct be_rx_page_info *page_info = NULL;
 902         struct be_queue_info *rxq = &adapter->rx_obj.q;
 903         struct page *pagep = NULL;
 904         struct be_eth_rx_d *rxd;
 905         u64 page_dmaaddr = 0, frag_dmaaddr;
 906         u32 posted, page_offset = 0;
 907
 908         page_info = &page_info_tbl[rxq->head];
 909         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 910                 if (!pagep) {
 911                         pagep = be_alloc_pages(adapter->big_page_size);
 912                         if (unlikely(!pagep)) {
 913                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 914                                 break;
 915                         }
 916                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 917                                                 adapter->big_page_size,
 918                                                 PCI_DMA_FROMDEVICE);
 919                         page_info->page_offset = 0;
 920                 } else {
 921                         get_page(pagep);
 922                         page_info->page_offset = page_offset + rx_frag_size;
 923                 }
 924                 page_offset = page_info->page_offset;
 925                 page_info->page = pagep;
 926                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 927                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 928
 929                 rxd = queue_head_node(rxq);
 930                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 931                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 932                 queue_head_inc(rxq);
 933
 934                 /* Any space left in the current big page for another frag? */
 935                 if ((page_offset + rx_frag_size + rx_frag_size) >
 936                                         adapter->big_page_size) {
 937                         pagep = NULL;
 938                         page_info->last_page_user = true;
 939                 }
 940                 page_info = &page_info_tbl[rxq->head];
 941         }
 942         if (pagep)
 943                 page_info->last_page_user = true;
 944
 945         if (posted) {
 946                 atomic_add(posted, &rxq->used);
 947                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 948         } else if (atomic_read(&rxq->used) == 0) {
 949                 /* Let be_worker replenish when memory is available */
 950                 adapter->rx_post_starved = true;
 951         }
 952
 953         return;
 954 }
 955
 956 static struct be_eth_tx_compl *
 957 be_tx_compl_get(struct be_adapter *adapter)
 958 {
 959         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 960         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 961
 962         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 963                 return NULL;
 964
 965         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 966
 967         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 968
 969         queue_tail_inc(tx_cq);
 970         return txcp;
 971 }
 972
 973 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 974 {
 975         struct be_queue_info *txq = &adapter->tx_obj.q;
 976         struct be_eth_wrb *wrb;
 977         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 978         struct sk_buff *sent_skb;
 979         u64 busaddr;
 980         u16 cur_index, num_wrbs = 0;
 981
 982         cur_index = txq->tail;
 983         sent_skb = sent_skbs[cur_index];
 984         BUG_ON(!sent_skb);
 985         sent_skbs[cur_index] = NULL;
 986
 987         do {
 988                 cur_index = txq->tail;
 989                 wrb = queue_tail_node(txq);
 990                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 991                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 992                 if (busaddr != 0) {
 993                         pci_unmap_single(adapter->pdev, busaddr,
 994                                 wrb->frag_len, PCI_DMA_TODEVICE);
 995                 }
 996                 num_wrbs++;
 997                 queue_tail_inc(txq);
 998         } while (cur_index != last_index);
 999
1000         atomic_sub(num_wrbs, &txq->used);
1001
1002         kfree_skb(sent_skb);
1003 }
1004
1005 static void be_rx_q_clean(struct be_adapter *adapter)
1006 {
1007         struct be_rx_page_info *page_info;
1008         struct be_queue_info *rxq = &adapter->rx_obj.q;
1009         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1010         struct be_eth_rx_compl *rxcp;
1011         u16 tail;
1012
1013         /* First cleanup pending rx completions */
1014         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1015                 be_rx_compl_discard(adapter, rxcp);
1016                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1017         }
1018
1019         /* Then free posted rx buffer that were not used */
1020         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1021         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1022                 page_info = get_rx_page_info(adapter, tail);
1023                 put_page(page_info->page);
1024                 memset(page_info, 0, sizeof(*page_info));
1025         }
1026         BUG_ON(atomic_read(&rxq->used));
1027 }
1028
1029 static void be_tx_q_clean(struct be_adapter *adapter)
1030 {
1031         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1032         struct sk_buff *sent_skb;
1033         struct be_queue_info *txq = &adapter->tx_obj.q;
1034         u16 last_index;
1035         bool dummy_wrb;
1036
1037         while (atomic_read(&txq->used)) {
1038                 sent_skb = sent_skbs[txq->tail];
1039                 last_index = txq->tail;
1040                 index_adv(&last_index,
1041                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1042                 be_tx_compl_process(adapter, last_index);
1043         }
1044 }
1045
1046 static void be_tx_queues_destroy(struct be_adapter *adapter)
1047 {
1048         struct be_queue_info *q;
1049
1050         q = &adapter->tx_obj.q;
1051         if (q->created)
1052                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1053         be_queue_free(adapter, q);
1054
1055         q = &adapter->tx_obj.cq;
1056         if (q->created)
1057                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1058         be_queue_free(adapter, q);
1059
1060         /* No more tx completions can be rcvd now; clean up if there are
1061          * any pending completions or pending tx requests */
1062         be_tx_q_clean(adapter);
1063
1064         q = &adapter->tx_eq.q;
1065         if (q->created)
1066                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1067         be_queue_free(adapter, q);
1068 }
1069
1070 static int be_tx_queues_create(struct be_adapter *adapter)
1071 {
1072         struct be_queue_info *eq, *q, *cq;
1073
1074         adapter->tx_eq.max_eqd = 0;
1075         adapter->tx_eq.min_eqd = 0;
1076         adapter->tx_eq.cur_eqd = 96;
1077         adapter->tx_eq.enable_aic = false;
1078         /* Alloc Tx Event queue */
1079         eq = &adapter->tx_eq.q;
1080         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1081                 return -1;
1082
1083         /* Ask BE to create Tx Event queue */
1084         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1085                 goto tx_eq_free;
1086         /* Alloc TX eth compl queue */
1087         cq = &adapter->tx_obj.cq;
1088         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1089                         sizeof(struct be_eth_tx_compl)))
1090                 goto tx_eq_destroy;
1091
1092         /* Ask BE to create Tx eth compl queue */
1093         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1094                 goto tx_cq_free;
1095
1096         /* Alloc TX eth queue */
1097         q = &adapter->tx_obj.q;
1098         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1099                 goto tx_cq_destroy;
1100
1101         /* Ask BE to create Tx eth queue */
1102         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1103                 goto tx_q_free;
1104         return 0;
1105
1106 tx_q_free:
1107         be_queue_free(adapter, q);
1108 tx_cq_destroy:
1109         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1110 tx_cq_free:
1111         be_queue_free(adapter, cq);
1112 tx_eq_destroy:
1113         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1114 tx_eq_free:
1115         be_queue_free(adapter, eq);
1116         return -1;
1117 }
1118
1119 static void be_rx_queues_destroy(struct be_adapter *adapter)
1120 {
1121         struct be_queue_info *q;
1122
1123         q = &adapter->rx_obj.q;
1124         if (q->created) {
1125                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1126                 be_rx_q_clean(adapter);
1127         }
1128         be_queue_free(adapter, q);
1129
1130         q = &adapter->rx_obj.cq;
1131         if (q->created)
1132                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1133         be_queue_free(adapter, q);
1134
1135         q = &adapter->rx_eq.q;
1136         if (q->created)
1137                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1138         be_queue_free(adapter, q);
1139 }
1140
1141 static int be_rx_queues_create(struct be_adapter *adapter)
1142 {
1143         struct be_queue_info *eq, *q, *cq;
1144         int rc;
1145
1146         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1147         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1148         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1149         adapter->rx_eq.min_eqd = 0;
1150         adapter->rx_eq.cur_eqd = 0;
1151         adapter->rx_eq.enable_aic = true;
1152
1153         /* Alloc Rx Event queue */
1154         eq = &adapter->rx_eq.q;
1155         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1156                                 sizeof(struct be_eq_entry));
1157         if (rc)
1158                 return rc;
1159
1160         /* Ask BE to create Rx Event queue */
1161         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1162         if (rc)
1163                 goto rx_eq_free;
1164
1165         /* Alloc RX eth compl queue */
1166         cq = &adapter->rx_obj.cq;
1167         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1168                         sizeof(struct be_eth_rx_compl));
1169         if (rc)
1170                 goto rx_eq_destroy;
1171
1172         /* Ask BE to create Rx eth compl queue */
1173         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1174         if (rc)
1175                 goto rx_cq_free;
1176
1177         /* Alloc RX eth queue */
1178         q = &adapter->rx_obj.q;
1179         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1180         if (rc)
1181                 goto rx_cq_destroy;
1182
1183         /* Ask BE to create Rx eth queue */
1184         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1185                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1186         if (rc)
1187                 goto rx_q_free;
1188
1189         return 0;
1190 rx_q_free:
1191         be_queue_free(adapter, q);
1192 rx_cq_destroy:
1193         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1194 rx_cq_free:
1195         be_queue_free(adapter, cq);
1196 rx_eq_destroy:
1197         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1198 rx_eq_free:
1199         be_queue_free(adapter, eq);
1200         return rc;
1201 }
1202 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1203 {
1204         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1205         u32 evt = entry->evt;
1206
1207         if (!evt)
1208                 return false;
1209
1210         evt = le32_to_cpu(evt);
1211         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1212         entry->evt = 0;
1213         queue_tail_inc(&eq_obj->q);
1214         return true;
1215 }
1216
1217 static int event_handle(struct be_ctrl_info *ctrl,
1218                         struct be_eq_obj *eq_obj)
1219 {
1220         u16 rid = 0, num = 0;
1221
1222         while (event_get(eq_obj, &rid))
1223                 num++;
1224
1225         /* We can see an interrupt and no event */
1226         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1227         if (num)
1228                 napi_schedule(&eq_obj->napi);
1229
1230         return num;
1231 }
1232
1233 static irqreturn_t be_intx(int irq, void *dev)
1234 {
1235         struct be_adapter *adapter = dev;
1236         struct be_ctrl_info *ctrl = &adapter->ctrl;
1237         int rx, tx;
1238
1239         tx = event_handle(ctrl, &adapter->tx_eq);
1240         rx = event_handle(ctrl, &adapter->rx_eq);
1241
1242         if (rx || tx)
1243                 return IRQ_HANDLED;
1244         else
1245                 return IRQ_NONE;
1246 }
1247
1248 static irqreturn_t be_msix_rx(int irq, void *dev)
1249 {
1250         struct be_adapter *adapter = dev;
1251
1252         event_handle(&adapter->ctrl, &adapter->rx_eq);
1253
1254         return IRQ_HANDLED;
1255 }
1256
1257 static irqreturn_t be_msix_tx(int irq, void *dev)
1258 {
1259         struct be_adapter *adapter = dev;
1260
1261         event_handle(&adapter->ctrl, &adapter->tx_eq);
1262
1263         return IRQ_HANDLED;
1264 }
1265
1266 static inline bool do_lro(struct be_adapter *adapter,
1267                         struct be_eth_rx_compl *rxcp)
1268 {
1269         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1270         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1271
1272         if (err)
1273                 drvr_stats(adapter)->be_rxcp_err++;
1274
1275         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1276                 false : true;
1277 }
1278
1279 int be_poll_rx(struct napi_struct *napi, int budget)
1280 {
1281         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1282         struct be_adapter *adapter =
1283                 container_of(rx_eq, struct be_adapter, rx_eq);
1284         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1285         struct be_eth_rx_compl *rxcp;
1286         u32 work_done;
1287
1288         for (work_done = 0; work_done < budget; work_done++) {
1289                 rxcp = be_rx_compl_get(adapter);
1290                 if (!rxcp)
1291                         break;
1292
1293                 if (do_lro(adapter, rxcp))
1294                         be_rx_compl_process_lro(adapter, rxcp);
1295                 else
1296                         be_rx_compl_process(adapter, rxcp);
1297         }
1298
1299         lro_flush_all(&adapter->rx_obj.lro_mgr);
1300
1301         /* Refill the queue */
1302         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1303                 be_post_rx_frags(adapter);
1304
1305         /* All consumed */
1306         if (work_done < budget) {
1307                 napi_complete(napi);
1308                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1309         } else {
1310                 /* More to be consumed; continue with interrupts disabled */
1311                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1312         }
1313         return work_done;
1314 }
1315
1316 /* For TX we don't honour budget; consume everything */
1317 int be_poll_tx(struct napi_struct *napi, int budget)
1318 {
1319         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1320         struct be_adapter *adapter =
1321                 container_of(tx_eq, struct be_adapter, tx_eq);
1322         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1323         struct be_queue_info *tx_cq = &tx_obj->cq;
1324         struct be_queue_info *txq = &tx_obj->q;
1325         struct be_eth_tx_compl *txcp;
1326         u32 num_cmpl = 0;
1327         u16 end_idx;
1328
1329         while ((txcp = be_tx_compl_get(adapter))) {
1330                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1331                                         wrb_index, txcp);
1332                 be_tx_compl_process(adapter, end_idx);
1333                 num_cmpl++;
1334         }
1335
1336         /* As Tx wrbs have been freed up, wake up netdev queue if
1337          * it was stopped due to lack of tx wrbs.
1338          */
1339         if (netif_queue_stopped(adapter->netdev) &&
1340                         atomic_read(&txq->used) < txq->len / 2) {
1341                 netif_wake_queue(adapter->netdev);
1342         }
1343
1344         napi_complete(napi);
1345
1346         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1347
1348         drvr_stats(adapter)->be_tx_events++;
1349         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1350
1351         return 1;
1352 }
1353
1354 static void be_worker(struct work_struct *work)
1355 {
1356         struct be_adapter *adapter =
1357                 container_of(work, struct be_adapter, work.work);
1358         int status;
1359
1360         /* Check link */
1361         be_link_status_update(adapter);
1362
1363         /* Get Stats */
1364         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1365         if (!status)
1366                 netdev_stats_update(adapter);
1367
1368         /* Set EQ delay */
1369         be_rx_eqd_update(adapter);
1370
1371         be_tx_rate_update(adapter);
1372         be_rx_rate_update(adapter);
1373
1374         if (adapter->rx_post_starved) {
1375                 adapter->rx_post_starved = false;
1376                 be_post_rx_frags(adapter);
1377         }
1378
1379         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1380 }
1381
1382 static void be_msix_enable(struct be_adapter *adapter)
1383 {
1384         int i, status;
1385
1386         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1387                 adapter->msix_entries[i].entry = i;
1388
1389         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1390                 BE_NUM_MSIX_VECTORS);
1391         if (status == 0)
1392                 adapter->msix_enabled = true;
1393         return;
1394 }
1395
1396 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1397 {
1398         return adapter->msix_entries[eq_id -
1399                         8 * adapter->ctrl.pci_func].vector;
1400 }
1401
1402 static int be_msix_register(struct be_adapter *adapter)
1403 {
1404         struct net_device *netdev = adapter->netdev;
1405         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1406         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1407         int status, vec;
1408
1409         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1410         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1411         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1412         if (status)
1413                 goto err;
1414
1415         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1416         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1417         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1418         if (status) { /* Free TX IRQ */
1419                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1420                 free_irq(vec, adapter);
1421                 goto err;
1422         }
1423         return 0;
1424 err:
1425         dev_warn(&adapter->pdev->dev,
1426                 "MSIX Request IRQ failed - err %d\n", status);
1427         pci_disable_msix(adapter->pdev);
1428         adapter->msix_enabled = false;
1429         return status;
1430 }
1431
1432 static int be_irq_register(struct be_adapter *adapter)
1433 {
1434         struct net_device *netdev = adapter->netdev;
1435         int status;
1436
1437         if (adapter->msix_enabled) {
1438                 status = be_msix_register(adapter);
1439                 if (status == 0)
1440                         goto done;
1441         }
1442
1443         /* INTx */
1444         netdev->irq = adapter->pdev->irq;
1445         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1446                         adapter);
1447         if (status) {
1448                 dev_err(&adapter->pdev->dev,
1449                         "INTx request IRQ failed - err %d\n", status);
1450                 return status;
1451         }
1452 done:
1453         adapter->isr_registered = true;
1454         return 0;
1455 }
1456
1457 static void be_irq_unregister(struct be_adapter *adapter)
1458 {
1459         struct net_device *netdev = adapter->netdev;
1460         int vec;
1461
1462         if (!adapter->isr_registered)
1463                 return;
1464
1465         /* INTx */
1466         if (!adapter->msix_enabled) {
1467                 free_irq(netdev->irq, adapter);
1468                 goto done;
1469         }
1470
1471         /* MSIx */
1472         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1473         free_irq(vec, adapter);
1474         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1475         free_irq(vec, adapter);
1476 done:
1477         adapter->isr_registered = false;
1478         return;
1479 }
1480
1481 static int be_open(struct net_device *netdev)
1482 {
1483         struct be_adapter *adapter = netdev_priv(netdev);
1484         struct be_ctrl_info *ctrl = &adapter->ctrl;
1485         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1486         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1487         u32 if_flags;
1488         int status;
1489
1490         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1491                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1492                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1493         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1494                         false/* pmac_invalid */, &adapter->if_handle,
1495                         &adapter->pmac_id);
1496         if (status != 0)
1497                 goto do_none;
1498
1499         be_vid_config(netdev);
1500
1501         status = be_cmd_set_flow_control(ctrl, true, true);
1502         if (status != 0)
1503                 goto if_destroy;
1504
1505         status = be_tx_queues_create(adapter);
1506         if (status != 0)
1507                 goto if_destroy;
1508
1509         status = be_rx_queues_create(adapter);
1510         if (status != 0)
1511                 goto tx_qs_destroy;
1512
1513         /* First time posting */
1514         be_post_rx_frags(adapter);
1515
1516         napi_enable(&rx_eq->napi);
1517         napi_enable(&tx_eq->napi);
1518
1519         be_irq_register(adapter);
1520
1521         be_intr_set(ctrl, true);
1522
1523         /* The evt queues are created in the unarmed state; arm them */
1524         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1525         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1526
1527         /* The compl queues are created in the unarmed state; arm them */
1528         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1529         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1530
1531         be_link_status_update(adapter);
1532
1533         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1534         return 0;
1535
1536 tx_qs_destroy:
1537         be_tx_queues_destroy(adapter);
1538 if_destroy:
1539         be_cmd_if_destroy(ctrl, adapter->if_handle);
1540 do_none:
1541         return status;
1542 }
1543
1544 static int be_close(struct net_device *netdev)
1545 {
1546         struct be_adapter *adapter = netdev_priv(netdev);
1547         struct be_ctrl_info *ctrl = &adapter->ctrl;
1548         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1549         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1550         int vec;
1551
1552         cancel_delayed_work_sync(&adapter->work);
1553
1554         netif_stop_queue(netdev);
1555         netif_carrier_off(netdev);
1556         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1557
1558         be_intr_set(ctrl, false);
1559
1560         if (adapter->msix_enabled) {
1561                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1562                 synchronize_irq(vec);
1563                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1564                 synchronize_irq(vec);
1565         } else {
1566                 synchronize_irq(netdev->irq);
1567         }
1568         be_irq_unregister(adapter);
1569
1570         napi_disable(&rx_eq->napi);
1571         napi_disable(&tx_eq->napi);
1572
1573         be_rx_queues_destroy(adapter);
1574         be_tx_queues_destroy(adapter);
1575
1576         be_cmd_if_destroy(ctrl, adapter->if_handle);
1577         return 0;
1578 }
1579
1580 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1581                                 void **ip_hdr, void **tcpudp_hdr,
1582                                 u64 *hdr_flags, void *priv)
1583 {
1584         struct ethhdr *eh;
1585         struct vlan_ethhdr *veh;
1586         struct iphdr *iph;
1587         u8 *va = page_address(frag->page) + frag->page_offset;
1588         unsigned long ll_hlen;
1589
1590         prefetch(va);
1591         eh = (struct ethhdr *)va;
1592         *mac_hdr = eh;
1593         ll_hlen = ETH_HLEN;
1594         if (eh->h_proto != htons(ETH_P_IP)) {
1595                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1596                         veh = (struct vlan_ethhdr *)va;
1597                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1598                                 return -1;
1599
1600                         ll_hlen += VLAN_HLEN;
1601                 } else {
1602                         return -1;
1603                 }
1604         }
1605         *hdr_flags = LRO_IPV4;
1606         iph = (struct iphdr *)(va + ll_hlen);
1607         *ip_hdr = iph;
1608         if (iph->protocol != IPPROTO_TCP)
1609                 return -1;
1610         *hdr_flags |= LRO_TCP;
1611         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1612
1613         return 0;
1614 }
1615
1616 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1617 {
1618         struct net_lro_mgr *lro_mgr;
1619
1620         lro_mgr = &adapter->rx_obj.lro_mgr;
1621         lro_mgr->dev = netdev;
1622         lro_mgr->features = LRO_F_NAPI;
1623         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1624         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1625         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1626         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1627         lro_mgr->get_frag_header = be_get_frag_header;
1628         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1629 }
1630
1631 static struct net_device_ops be_netdev_ops = {
1632         .ndo_open               = be_open,
1633         .ndo_stop               = be_close,
1634         .ndo_start_xmit         = be_xmit,
1635         .ndo_get_stats          = be_get_stats,
1636         .ndo_set_rx_mode        = be_set_multicast_list,
1637         .ndo_set_mac_address    = be_mac_addr_set,
1638         .ndo_change_mtu         = be_change_mtu,
1639         .ndo_validate_addr      = eth_validate_addr,
1640         .ndo_vlan_rx_register   = be_vlan_register,
1641         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1642         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1643 };
1644
1645 static void be_netdev_init(struct net_device *netdev)
1646 {
1647         struct be_adapter *adapter = netdev_priv(netdev);
1648
1649         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1650                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1651                 NETIF_F_IPV6_CSUM;
1652
1653         netdev->flags |= IFF_MULTICAST;
1654
1655         adapter->rx_csum = true;
1656
1657         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1658
1659         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1660
1661         be_lro_init(adapter, netdev);
1662
1663         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1664                 BE_NAPI_WEIGHT);
1665         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1666                 BE_NAPI_WEIGHT);
1667
1668         netif_carrier_off(netdev);
1669         netif_stop_queue(netdev);
1670 }
1671
1672 static void be_unmap_pci_bars(struct be_adapter *adapter)
1673 {
1674         struct be_ctrl_info *ctrl = &adapter->ctrl;
1675         if (ctrl->csr)
1676                 iounmap(ctrl->csr);
1677         if (ctrl->db)
1678                 iounmap(ctrl->db);
1679         if (ctrl->pcicfg)
1680                 iounmap(ctrl->pcicfg);
1681 }
1682
1683 static int be_map_pci_bars(struct be_adapter *adapter)
1684 {
1685         u8 __iomem *addr;
1686
1687         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1688                         pci_resource_len(adapter->pdev, 2));
1689         if (addr == NULL)
1690                 return -ENOMEM;
1691         adapter->ctrl.csr = addr;
1692
1693         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1694                         128 * 1024);
1695         if (addr == NULL)
1696                 goto pci_map_err;
1697         adapter->ctrl.db = addr;
1698
1699         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1700                         pci_resource_len(adapter->pdev, 1));
1701         if (addr == NULL)
1702                 goto pci_map_err;
1703         adapter->ctrl.pcicfg = addr;
1704
1705         return 0;
1706 pci_map_err:
1707         be_unmap_pci_bars(adapter);
1708         return -ENOMEM;
1709 }
1710
1711
1712 static void be_ctrl_cleanup(struct be_adapter *adapter)
1713 {
1714         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1715
1716         be_unmap_pci_bars(adapter);
1717
1718         if (mem->va)
1719                 pci_free_consistent(adapter->pdev, mem->size,
1720                         mem->va, mem->dma);
1721 }
1722
1723 /* Initialize the mbox required to send cmds to BE */
1724 static int be_ctrl_init(struct be_adapter *adapter)
1725 {
1726         struct be_ctrl_info *ctrl = &adapter->ctrl;
1727         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1728         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1729         int status;
1730         u32 val;
1731
1732         status = be_map_pci_bars(adapter);
1733         if (status)
1734                 return status;
1735
1736         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1737         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1738                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1739         if (!mbox_mem_alloc->va) {
1740                 be_unmap_pci_bars(adapter);
1741                 return -1;
1742         }
1743         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1744         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1745         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1746         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1747         spin_lock_init(&ctrl->cmd_lock);
1748
1749         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1750         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1751                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1752         return 0;
1753 }
1754
1755 static void be_stats_cleanup(struct be_adapter *adapter)
1756 {
1757         struct be_stats_obj *stats = &adapter->stats;
1758         struct be_dma_mem *cmd = &stats->cmd;
1759
1760         if (cmd->va)
1761                 pci_free_consistent(adapter->pdev, cmd->size,
1762                         cmd->va, cmd->dma);
1763 }
1764
1765 static int be_stats_init(struct be_adapter *adapter)
1766 {
1767         struct be_stats_obj *stats = &adapter->stats;
1768         struct be_dma_mem *cmd = &stats->cmd;
1769
1770         cmd->size = sizeof(struct be_cmd_req_get_stats);
1771         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1772         if (cmd->va == NULL)
1773                 return -1;
1774         return 0;
1775 }
1776
1777 static void __devexit be_remove(struct pci_dev *pdev)
1778 {
1779         struct be_adapter *adapter = pci_get_drvdata(pdev);
1780         if (!adapter)
1781                 return;
1782
1783         unregister_netdev(adapter->netdev);
1784
1785         be_stats_cleanup(adapter);
1786
1787         be_ctrl_cleanup(adapter);
1788
1789         if (adapter->msix_enabled) {
1790                 pci_disable_msix(adapter->pdev);
1791                 adapter->msix_enabled = false;
1792         }
1793
1794         pci_set_drvdata(pdev, NULL);
1795         pci_release_regions(pdev);
1796         pci_disable_device(pdev);
1797
1798         free_netdev(adapter->netdev);
1799 }
1800
1801 static int be_hw_up(struct be_adapter *adapter)
1802 {
1803         struct be_ctrl_info *ctrl = &adapter->ctrl;
1804         int status;
1805
1806         status = be_cmd_POST(ctrl);
1807         if (status)
1808                 return status;
1809
1810         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1811         if (status)
1812                 return status;
1813
1814         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1815         return status;
1816 }
1817
1818 static int __devinit be_probe(struct pci_dev *pdev,
1819                         const struct pci_device_id *pdev_id)
1820 {
1821         int status = 0;
1822         struct be_adapter *adapter;
1823         struct net_device *netdev;
1824         struct be_ctrl_info *ctrl;
1825         u8 mac[ETH_ALEN];
1826
1827         status = pci_enable_device(pdev);
1828         if (status)
1829                 goto do_none;
1830
1831         status = pci_request_regions(pdev, DRV_NAME);
1832         if (status)
1833                 goto disable_dev;
1834         pci_set_master(pdev);
1835
1836         netdev = alloc_etherdev(sizeof(struct be_adapter));
1837         if (netdev == NULL) {
1838                 status = -ENOMEM;
1839                 goto rel_reg;
1840         }
1841         adapter = netdev_priv(netdev);
1842         adapter->pdev = pdev;
1843         pci_set_drvdata(pdev, adapter);
1844         adapter->netdev = netdev;
1845
1846         be_msix_enable(adapter);
1847
1848         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1849         if (!status) {
1850                 netdev->features |= NETIF_F_HIGHDMA;
1851         } else {
1852                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1853                 if (status) {
1854                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1855                         goto free_netdev;
1856                 }
1857         }
1858
1859         ctrl = &adapter->ctrl;
1860         status = be_ctrl_init(adapter);
1861         if (status)
1862                 goto free_netdev;
1863
1864         status = be_stats_init(adapter);
1865         if (status)
1866                 goto ctrl_clean;
1867
1868         status = be_hw_up(adapter);
1869         if (status)
1870                 goto stats_clean;
1871
1872         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1873                         true /* permanent */, 0);
1874         if (status)
1875                 goto stats_clean;
1876         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1877
1878         INIT_DELAYED_WORK(&adapter->work, be_worker);
1879         be_netdev_init(netdev);
1880         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1881
1882         status = register_netdev(netdev);
1883         if (status != 0)
1884                 goto stats_clean;
1885
1886         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1887         return 0;
1888
1889 stats_clean:
1890         be_stats_cleanup(adapter);
1891 ctrl_clean:
1892         be_ctrl_cleanup(adapter);
1893 free_netdev:
1894         free_netdev(adapter->netdev);
1895 rel_reg:
1896         pci_release_regions(pdev);
1897 disable_dev:
1898         pci_disable_device(pdev);
1899 do_none:
1900         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1901         return status;
1902 }
1903
1904 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1905 {
1906         struct be_adapter *adapter = pci_get_drvdata(pdev);
1907         struct net_device *netdev =  adapter->netdev;
1908
1909         netif_device_detach(netdev);
1910         if (netif_running(netdev)) {
1911                 rtnl_lock();
1912                 be_close(netdev);
1913                 rtnl_unlock();
1914         }
1915
1916         pci_save_state(pdev);
1917         pci_disable_device(pdev);
1918         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1919         return 0;
1920 }
1921
1922 static int be_resume(struct pci_dev *pdev)
1923 {
1924         int status = 0;
1925         struct be_adapter *adapter = pci_get_drvdata(pdev);
1926         struct net_device *netdev =  adapter->netdev;
1927
1928         netif_device_detach(netdev);
1929
1930         status = pci_enable_device(pdev);
1931         if (status)
1932                 return status;
1933
1934         pci_set_power_state(pdev, 0);
1935         pci_restore_state(pdev);
1936
1937         if (netif_running(netdev)) {
1938                 rtnl_lock();
1939                 be_open(netdev);
1940                 rtnl_unlock();
1941         }
1942         netif_device_attach(netdev);
1943         return 0;
1944 }
1945
1946 static struct pci_driver be_driver = {
1947         .name = DRV_NAME,
1948         .id_table = be_dev_ids,
1949         .probe = be_probe,
1950         .remove = be_remove,
1951         .suspend = be_suspend,
1952         .resume = be_resume
1953 };
1954
1955 static int __init be_init_module(void)
1956 {
1957         if (rx_frag_size != 8192 && rx_frag_size != 4096
1958                 && rx_frag_size != 2048) {
1959                 printk(KERN_WARNING DRV_NAME
1960                         " : Module param rx_frag_size must be 2048/4096/8192."
1961                         " Using 2048\n");
1962                 rx_frag_size = 2048;
1963         }
1964         /* Ensure rx_frag_size is aligned to chache line */
1965         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1966                 printk(KERN_WARNING DRV_NAME
1967                         " : Bad module param rx_frag_size. Using 2048\n");
1968                 rx_frag_size = 2048;
1969         }
1970
1971         return pci_register_driver(&be_driver);
1972 }
1973 module_init(be_init_module);
1974
1975 static void __exit be_exit_module(void)
1976 {
1977         pci_unregister_driver(&be_driver);
1978 }
1979 module_exit(be_exit_module);