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 #define BE_VENDOR_ID            0x19a2
  32 #define BE2_DEVICE_ID_1         0x0211
  33 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  34         { PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
  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
 172         dev_stats->rx_packets = port_stats->rx_total_frames;
 173         dev_stats->tx_packets = port_stats->tx_unicastframes +
 174                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 175         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 176                                 (u64) port_stats->rx_bytes_lsd;
 177         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 178                                 (u64) port_stats->tx_bytes_lsd;
 179
 180         /* bad pkts received */
 181         dev_stats->rx_errors = port_stats->rx_crc_errors +
 182                 port_stats->rx_alignment_symbol_errors +
 183                 port_stats->rx_in_range_errors +
 184                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 185
 186         /*  packet transmit problems */
 187         dev_stats->tx_errors = 0;
 188
 189         /*  no space in linux buffers */
 190         dev_stats->rx_dropped = 0;
 191
 192         /* no space available in linux */
 193         dev_stats->tx_dropped = 0;
 194
 195         dev_stats->multicast = port_stats->tx_multicastframes;
 196         dev_stats->collisions = 0;
 197
 198         /* detailed rx errors */
 199         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 200                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 201         /* receive ring buffer overflow */
 202         dev_stats->rx_over_errors = 0;
 203         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 204
 205         /* frame alignment errors */
 206         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 207         /* receiver fifo overrun */
 208         /* drops_no_pbuf is no per i/f, it's per BE card */
 209         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 210                                         port_stats->rx_input_fifo_overflow +
 211                                         rxf_stats->rx_drops_no_pbuf;
 212         /* receiver missed packetd */
 213         dev_stats->rx_missed_errors = 0;
 214         /* detailed tx_errors */
 215         dev_stats->tx_aborted_errors = 0;
 216         dev_stats->tx_carrier_errors = 0;
 217         dev_stats->tx_fifo_errors = 0;
 218         dev_stats->tx_heartbeat_errors = 0;
 219         dev_stats->tx_window_errors = 0;
 220 }
 221
 222 static void be_link_status_update(struct be_adapter *adapter)
 223 {
 224         struct be_link_info *prev = &adapter->link;
 225         struct be_link_info now = { 0 };
 226         struct net_device *netdev = adapter->netdev;
 227
 228         be_cmd_link_status_query(&adapter->ctrl, &now);
 229
 230         /* If link came up or went down */
 231         if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
 232                         prev->speed == PHY_LINK_SPEED_ZERO)) {
 233                 if (now.speed == PHY_LINK_SPEED_ZERO) {
 234                         netif_stop_queue(netdev);
 235                         netif_carrier_off(netdev);
 236                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 237                 } else {
 238                         netif_start_queue(netdev);
 239                         netif_carrier_on(netdev);
 240                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 241                 }
 242         }
 243         *prev = now;
 244 }
 245
 246 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 247 static void be_rx_eqd_update(struct be_adapter *adapter)
 248 {
 249         struct be_ctrl_info *ctrl = &adapter->ctrl;
 250         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 251         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 252         ulong now = jiffies;
 253         u32 eqd;
 254
 255         if (!rx_eq->enable_aic)
 256                 return;
 257
 258         /* Wrapped around */
 259         if (time_before(now, stats->rx_fps_jiffies)) {
 260                 stats->rx_fps_jiffies = now;
 261                 return;
 262         }
 263
 264         /* Update once a second */
 265         if ((now - stats->rx_fps_jiffies) < HZ)
 266                 return;
 267
 268         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 269                         ((now - stats->rx_fps_jiffies) / HZ);
 270
 271         stats->rx_fps_jiffies = now;
 272         stats->be_prev_rx_frags = stats->be_rx_frags;
 273         eqd = stats->be_rx_fps / 110000;
 274         eqd = eqd << 3;
 275         if (eqd > rx_eq->max_eqd)
 276                 eqd = rx_eq->max_eqd;
 277         if (eqd < rx_eq->min_eqd)
 278                 eqd = rx_eq->min_eqd;
 279         if (eqd < 10)
 280                 eqd = 0;
 281         if (eqd != rx_eq->cur_eqd)
 282                 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
 283
 284         rx_eq->cur_eqd = eqd;
 285 }
 286
 287 static struct net_device_stats *be_get_stats(struct net_device *dev)
 288 {
 289         struct be_adapter *adapter = netdev_priv(dev);
 290
 291         return &adapter->stats.net_stats;
 292 }
 293
 294 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 295 {
 296         u64 rate = bytes;
 297
 298         do_div(rate, ticks / HZ);
 299         rate <<= 3;                     /* bytes/sec -> bits/sec */
 300         do_div(rate, 1000000ul);        /* MB/Sec */
 301
 302         return rate;
 303 }
 304
 305 static void be_tx_rate_update(struct be_adapter *adapter)
 306 {
 307         struct be_drvr_stats *stats = drvr_stats(adapter);
 308         ulong now = jiffies;
 309
 310         /* Wrapped around? */
 311         if (time_before(now, stats->be_tx_jiffies)) {
 312                 stats->be_tx_jiffies = now;
 313                 return;
 314         }
 315
 316         /* Update tx rate once in two seconds */
 317         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 318                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 319                                                   - stats->be_tx_bytes_prev,
 320                                                  now - stats->be_tx_jiffies);
 321                 stats->be_tx_jiffies = now;
 322                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 323         }
 324 }
 325
 326 static void be_tx_stats_update(struct be_adapter *adapter,
 327                         u32 wrb_cnt, u32 copied, bool stopped)
 328 {
 329         struct be_drvr_stats *stats = drvr_stats(adapter);
 330         stats->be_tx_reqs++;
 331         stats->be_tx_wrbs += wrb_cnt;
 332         stats->be_tx_bytes += copied;
 333         if (stopped)
 334                 stats->be_tx_stops++;
 335 }
 336
 337 /* Determine number of WRB entries needed to xmit data in an skb */
 338 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 339 {
 340         int cnt = 0;
 341         while (skb) {
 342                 if (skb->len > skb->data_len)
 343                         cnt++;
 344                 cnt += skb_shinfo(skb)->nr_frags;
 345                 skb = skb_shinfo(skb)->frag_list;
 346         }
 347         /* to account for hdr wrb */
 348         cnt++;
 349         if (cnt & 1) {
 350                 /* add a dummy to make it an even num */
 351                 cnt++;
 352                 *dummy = true;
 353         } else
 354                 *dummy = false;
 355         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 356         return cnt;
 357 }
 358
 359 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 360 {
 361         wrb->frag_pa_hi = upper_32_bits(addr);
 362         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 363         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 364 }
 365
 366 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 367                 bool vlan, u32 wrb_cnt, u32 len)
 368 {
 369         memset(hdr, 0, sizeof(*hdr));
 370
 371         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 372
 373         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 374                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 375                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 376                         hdr, skb_shinfo(skb)->gso_size);
 377         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 378                 if (is_tcp_pkt(skb))
 379                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 380                 else if (is_udp_pkt(skb))
 381                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 382         }
 383
 384         if (vlan && vlan_tx_tag_present(skb)) {
 385                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 386                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 387                         hdr, vlan_tx_tag_get(skb));
 388         }
 389
 390         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 391         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 392         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 393         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 394 }
 395
 396
 397 static int make_tx_wrbs(struct be_adapter *adapter,
 398                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 399 {
 400         u64 busaddr;
 401         u32 i, copied = 0;
 402         struct pci_dev *pdev = adapter->pdev;
 403         struct sk_buff *first_skb = skb;
 404         struct be_queue_info *txq = &adapter->tx_obj.q;
 405         struct be_eth_wrb *wrb;
 406         struct be_eth_hdr_wrb *hdr;
 407
 408         atomic_add(wrb_cnt, &txq->used);
 409         hdr = queue_head_node(txq);
 410         queue_head_inc(txq);
 411
 412         while (skb) {
 413                 if (skb->len > skb->data_len) {
 414                         int len = skb->len - skb->data_len;
 415                         busaddr = pci_map_single(pdev, skb->data, len,
 416                                         PCI_DMA_TODEVICE);
 417                         wrb = queue_head_node(txq);
 418                         wrb_fill(wrb, busaddr, len);
 419                         be_dws_cpu_to_le(wrb, sizeof(*wrb));
 420                         queue_head_inc(txq);
 421                         copied += len;
 422                 }
 423
 424                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 425                         struct skb_frag_struct *frag =
 426                                 &skb_shinfo(skb)->frags[i];
 427                         busaddr = pci_map_page(pdev, frag->page,
 428                                         frag->page_offset,
 429                                         frag->size, PCI_DMA_TODEVICE);
 430                         wrb = queue_head_node(txq);
 431                         wrb_fill(wrb, busaddr, frag->size);
 432                         be_dws_cpu_to_le(wrb, sizeof(*wrb));
 433                         queue_head_inc(txq);
 434                         copied += frag->size;
 435                 }
 436                 skb = skb_shinfo(skb)->frag_list;
 437         }
 438
 439         if (dummy_wrb) {
 440                 wrb = queue_head_node(txq);
 441                 wrb_fill(wrb, 0, 0);
 442                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 443                 queue_head_inc(txq);
 444         }
 445
 446         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 447                 wrb_cnt, copied);
 448         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 449
 450         return copied;
 451 }
 452
 453 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 454 {
 455         struct be_adapter *adapter = netdev_priv(netdev);
 456         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 457         struct be_queue_info *txq = &tx_obj->q;
 458         u32 wrb_cnt = 0, copied = 0;
 459         u32 start = txq->head;
 460         bool dummy_wrb, stopped = false;
 461
 462         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 463
 464         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 465
 466         /* record the sent skb in the sent_skb table */
 467         BUG_ON(tx_obj->sent_skb_list[start]);
 468         tx_obj->sent_skb_list[start] = skb;
 469
 470         /* Ensure that txq has space for the next skb; Else stop the queue
 471          * *BEFORE* ringing the tx doorbell, so that we serialze the
 472          * tx compls of the current transmit which'll wake up the queue
 473          */
 474         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 475                 netif_stop_queue(netdev);
 476                 stopped = true;
 477         }
 478
 479         be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
 480
 481         netdev->trans_start = jiffies;
 482
 483         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 484         return NETDEV_TX_OK;
 485 }
 486
 487 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 488 {
 489         struct be_adapter *adapter = netdev_priv(netdev);
 490         if (new_mtu < BE_MIN_MTU ||
 491                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 492                 dev_info(&adapter->pdev->dev,
 493                         "MTU must be between %d and %d bytes\n",
 494                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 495                 return -EINVAL;
 496         }
 497         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 498                         netdev->mtu, new_mtu);
 499         netdev->mtu = new_mtu;
 500         return 0;
 501 }
 502
 503 /*
 504  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 505  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 506  * set the BE in promiscuous VLAN mode.
 507  */
 508 static void be_vid_config(struct net_device *netdev)
 509 {
 510         struct be_adapter *adapter = netdev_priv(netdev);
 511         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 512         u16 ntags = 0, i;
 513
 514         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 515                 /* Construct VLAN Table to give to HW */
 516                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 517                         if (adapter->vlan_tag[i]) {
 518                                 vtag[ntags] = cpu_to_le16(i);
 519                                 ntags++;
 520                         }
 521                 }
 522                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 523                         vtag, ntags, 1, 0);
 524         } else {
 525                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 526                         NULL, 0, 1, 1);
 527         }
 528 }
 529
 530 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 531 {
 532         struct be_adapter *adapter = netdev_priv(netdev);
 533         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 534         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 535         struct be_ctrl_info *ctrl = &adapter->ctrl;
 536
 537         be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
 538         be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
 539         adapter->vlan_grp = grp;
 540         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
 541         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
 542 }
 543
 544 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 545 {
 546         struct be_adapter *adapter = netdev_priv(netdev);
 547
 548         adapter->num_vlans++;
 549         adapter->vlan_tag[vid] = 1;
 550
 551         be_vid_config(netdev);
 552 }
 553
 554 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 555 {
 556         struct be_adapter *adapter = netdev_priv(netdev);
 557
 558         adapter->num_vlans--;
 559         adapter->vlan_tag[vid] = 0;
 560
 561         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 562         be_vid_config(netdev);
 563 }
 564
 565 static void be_set_multicast_filter(struct net_device *netdev)
 566 {
 567         struct be_adapter *adapter = netdev_priv(netdev);
 568         struct dev_mc_list *mc_ptr;
 569         u8 mac_addr[32][ETH_ALEN];
 570         int i = 0;
 571
 572         if (netdev->flags & IFF_ALLMULTI) {
 573                 /* set BE in Multicast promiscuous */
 574                 be_cmd_mcast_mac_set(&adapter->ctrl,
 575                                         adapter->if_handle, NULL, 0, true);
 576                 return;
 577         }
 578
 579         for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
 580                 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
 581                 if (++i >= 32) {
 582                         be_cmd_mcast_mac_set(&adapter->ctrl,
 583                                 adapter->if_handle, &mac_addr[0][0], i, false);
 584                         i = 0;
 585                 }
 586
 587         }
 588
 589         if (i) {
 590                 /* reset the promiscuous mode also. */
 591                 be_cmd_mcast_mac_set(&adapter->ctrl,
 592                         adapter->if_handle, &mac_addr[0][0], i, false);
 593         }
 594 }
 595
 596 static void be_set_multicast_list(struct net_device *netdev)
 597 {
 598         struct be_adapter *adapter = netdev_priv(netdev);
 599
 600         if (netdev->flags & IFF_PROMISC) {
 601                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
 602         } else {
 603                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
 604                 be_set_multicast_filter(netdev);
 605         }
 606 }
 607
 608 static void be_rx_rate_update(struct be_adapter *adapter)
 609 {
 610         struct be_drvr_stats *stats = drvr_stats(adapter);
 611         ulong now = jiffies;
 612
 613         /* Wrapped around */
 614         if (time_before(now, stats->be_rx_jiffies)) {
 615                 stats->be_rx_jiffies = now;
 616                 return;
 617         }
 618
 619         /* Update the rate once in two seconds */
 620         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 621                 return;
 622
 623         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 624                                           - stats->be_rx_bytes_prev,
 625                                          now - stats->be_rx_jiffies);
 626         stats->be_rx_jiffies = now;
 627         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 628 }
 629
 630 static void be_rx_stats_update(struct be_adapter *adapter,
 631                 u32 pktsize, u16 numfrags)
 632 {
 633         struct be_drvr_stats *stats = drvr_stats(adapter);
 634
 635         stats->be_rx_compl++;
 636         stats->be_rx_frags += numfrags;
 637         stats->be_rx_bytes += pktsize;
 638 }
 639
 640 static struct be_rx_page_info *
 641 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 642 {
 643         struct be_rx_page_info *rx_page_info;
 644         struct be_queue_info *rxq = &adapter->rx_obj.q;
 645
 646         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 647         BUG_ON(!rx_page_info->page);
 648
 649         if (rx_page_info->last_page_user)
 650                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 651                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 652
 653         atomic_dec(&rxq->used);
 654         return rx_page_info;
 655 }
 656
 657 /* Throwaway the data in the Rx completion */
 658 static void be_rx_compl_discard(struct be_adapter *adapter,
 659                         struct be_eth_rx_compl *rxcp)
 660 {
 661         struct be_queue_info *rxq = &adapter->rx_obj.q;
 662         struct be_rx_page_info *page_info;
 663         u16 rxq_idx, i, num_rcvd;
 664
 665         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 666         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 667
 668         for (i = 0; i < num_rcvd; i++) {
 669                 page_info = get_rx_page_info(adapter, rxq_idx);
 670                 put_page(page_info->page);
 671                 memset(page_info, 0, sizeof(*page_info));
 672                 index_inc(&rxq_idx, rxq->len);
 673         }
 674 }
 675
 676 /*
 677  * skb_fill_rx_data forms a complete skb for an ether frame
 678  * indicated by rxcp.
 679  */
 680 static void skb_fill_rx_data(struct be_adapter *adapter,
 681                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 682 {
 683         struct be_queue_info *rxq = &adapter->rx_obj.q;
 684         struct be_rx_page_info *page_info;
 685         u16 rxq_idx, i, num_rcvd;
 686         u32 pktsize, hdr_len, curr_frag_len;
 687         u8 *start;
 688
 689         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 690         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 691         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 692
 693         page_info = get_rx_page_info(adapter, rxq_idx);
 694
 695         start = page_address(page_info->page) + page_info->page_offset;
 696         prefetch(start);
 697
 698         /* Copy data in the first descriptor of this completion */
 699         curr_frag_len = min(pktsize, rx_frag_size);
 700
 701         /* Copy the header portion into skb_data */
 702         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 703         memcpy(skb->data, start, hdr_len);
 704         skb->len = curr_frag_len;
 705         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 706                 /* Complete packet has now been moved to data */
 707                 put_page(page_info->page);
 708                 skb->data_len = 0;
 709                 skb->tail += curr_frag_len;
 710         } else {
 711                 skb_shinfo(skb)->nr_frags = 1;
 712                 skb_shinfo(skb)->frags[0].page = page_info->page;
 713                 skb_shinfo(skb)->frags[0].page_offset =
 714                                         page_info->page_offset + hdr_len;
 715                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 716                 skb->data_len = curr_frag_len - hdr_len;
 717                 skb->tail += hdr_len;
 718         }
 719         memset(page_info, 0, sizeof(*page_info));
 720
 721         if (pktsize <= rx_frag_size) {
 722                 BUG_ON(num_rcvd != 1);
 723                 return;
 724         }
 725
 726         /* More frags present for this completion */
 727         pktsize -= curr_frag_len; /* account for above copied frag */
 728         for (i = 1; i < num_rcvd; i++) {
 729                 index_inc(&rxq_idx, rxq->len);
 730                 page_info = get_rx_page_info(adapter, rxq_idx);
 731
 732                 curr_frag_len = min(pktsize, rx_frag_size);
 733
 734                 skb_shinfo(skb)->frags[i].page = page_info->page;
 735                 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
 736                 skb_shinfo(skb)->frags[i].size = curr_frag_len;
 737                 skb->len += curr_frag_len;
 738                 skb->data_len += curr_frag_len;
 739                 skb_shinfo(skb)->nr_frags++;
 740                 pktsize -= curr_frag_len;
 741
 742                 memset(page_info, 0, sizeof(*page_info));
 743         }
 744
 745         be_rx_stats_update(adapter, pktsize, num_rcvd);
 746         return;
 747 }
 748
 749 /* Process the RX completion indicated by rxcp when LRO is disabled */
 750 static void be_rx_compl_process(struct be_adapter *adapter,
 751                         struct be_eth_rx_compl *rxcp)
 752 {
 753         struct sk_buff *skb;
 754         u32 vtp, vid;
 755         int l4_cksm;
 756
 757         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 758         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 759
 760         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 761         if (!skb) {
 762                 if (net_ratelimit())
 763                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 764                 be_rx_compl_discard(adapter, rxcp);
 765                 return;
 766         }
 767
 768         skb_reserve(skb, NET_IP_ALIGN);
 769
 770         skb_fill_rx_data(adapter, skb, rxcp);
 771
 772         if (l4_cksm && adapter->rx_csum)
 773                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 774         else
 775                 skb->ip_summed = CHECKSUM_NONE;
 776
 777         skb->truesize = skb->len + sizeof(struct sk_buff);
 778         skb->protocol = eth_type_trans(skb, adapter->netdev);
 779         skb->dev = adapter->netdev;
 780
 781         if (vtp) {
 782                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 783                         kfree_skb(skb);
 784                         return;
 785                 }
 786                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 787                 vid = be16_to_cpu(vid);
 788                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 789         } else {
 790                 netif_receive_skb(skb);
 791         }
 792
 793         adapter->netdev->last_rx = jiffies;
 794
 795         return;
 796 }
 797
 798 /* Process the RX completion indicated by rxcp when LRO is enabled */
 799 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 800                         struct be_eth_rx_compl *rxcp)
 801 {
 802         struct be_rx_page_info *page_info;
 803         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 804         struct be_queue_info *rxq = &adapter->rx_obj.q;
 805         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 806         u16 i, rxq_idx = 0, vid;
 807
 808         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 809         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 810         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 811         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 812
 813         remaining = pkt_size;
 814         for (i = 0; i < num_rcvd; i++) {
 815                 page_info = get_rx_page_info(adapter, rxq_idx);
 816
 817                 curr_frag_len = min(remaining, rx_frag_size);
 818
 819                 rx_frags[i].page = page_info->page;
 820                 rx_frags[i].page_offset = page_info->page_offset;
 821                 rx_frags[i].size = curr_frag_len;
 822                 remaining -= curr_frag_len;
 823
 824                 index_inc(&rxq_idx, rxq->len);
 825
 826                 memset(page_info, 0, sizeof(*page_info));
 827         }
 828
 829         if (likely(!vlanf)) {
 830                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 831                                 pkt_size, NULL, 0);
 832         } else {
 833                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 834                 vid = be16_to_cpu(vid);
 835
 836                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 837                         return;
 838
 839                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 840                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 841                         vid, NULL, 0);
 842         }
 843
 844         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 845         return;
 846 }
 847
 848 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 849 {
 850         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 851
 852         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 853                 return NULL;
 854
 855         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 856
 857         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 858
 859         queue_tail_inc(&adapter->rx_obj.cq);
 860         return rxcp;
 861 }
 862
 863 static inline struct page *be_alloc_pages(u32 size)
 864 {
 865         gfp_t alloc_flags = GFP_ATOMIC;
 866         u32 order = get_order(size);
 867         if (order > 0)
 868                 alloc_flags |= __GFP_COMP;
 869         return  alloc_pages(alloc_flags, order);
 870 }
 871
 872 /*
 873  * Allocate a page, split it to fragments of size rx_frag_size and post as
 874  * receive buffers to BE
 875  */
 876 static void be_post_rx_frags(struct be_adapter *adapter)
 877 {
 878         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 879         struct be_rx_page_info *page_info = NULL;
 880         struct be_queue_info *rxq = &adapter->rx_obj.q;
 881         struct page *pagep = NULL;
 882         struct be_eth_rx_d *rxd;
 883         u64 page_dmaaddr = 0, frag_dmaaddr;
 884         u32 posted, page_offset = 0;
 885
 886         page_info = &page_info_tbl[rxq->head];
 887         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 888                 if (!pagep) {
 889                         pagep = be_alloc_pages(adapter->big_page_size);
 890                         if (unlikely(!pagep)) {
 891                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 892                                 break;
 893                         }
 894                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 895                                                 adapter->big_page_size,
 896                                                 PCI_DMA_FROMDEVICE);
 897                         page_info->page_offset = 0;
 898                 } else {
 899                         get_page(pagep);
 900                         page_info->page_offset = page_offset + rx_frag_size;
 901                 }
 902                 page_offset = page_info->page_offset;
 903                 page_info->page = pagep;
 904                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 905                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 906
 907                 rxd = queue_head_node(rxq);
 908                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 909                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 910                 queue_head_inc(rxq);
 911
 912                 /* Any space left in the current big page for another frag? */
 913                 if ((page_offset + rx_frag_size + rx_frag_size) >
 914                                         adapter->big_page_size) {
 915                         pagep = NULL;
 916                         page_info->last_page_user = true;
 917                 }
 918                 page_info = &page_info_tbl[rxq->head];
 919         }
 920         if (pagep)
 921                 page_info->last_page_user = true;
 922
 923         if (posted) {
 924                 atomic_add(posted, &rxq->used);
 925                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 926         } else if (atomic_read(&rxq->used) == 0) {
 927                 /* Let be_worker replenish when memory is available */
 928                 adapter->rx_post_starved = true;
 929         }
 930
 931         return;
 932 }
 933
 934 static struct be_eth_tx_compl *
 935 be_tx_compl_get(struct be_adapter *adapter)
 936 {
 937         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 938         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 939
 940         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 941                 return NULL;
 942
 943         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 944
 945         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 946
 947         queue_tail_inc(tx_cq);
 948         return txcp;
 949 }
 950
 951 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 952 {
 953         struct be_queue_info *txq = &adapter->tx_obj.q;
 954         struct be_eth_wrb *wrb;
 955         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 956         struct sk_buff *sent_skb;
 957         u64 busaddr;
 958         u16 cur_index, num_wrbs = 0;
 959
 960         cur_index = txq->tail;
 961         sent_skb = sent_skbs[cur_index];
 962         BUG_ON(!sent_skb);
 963         sent_skbs[cur_index] = NULL;
 964
 965         do {
 966                 cur_index = txq->tail;
 967                 wrb = queue_tail_node(txq);
 968                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 969                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 970                 if (busaddr != 0) {
 971                         pci_unmap_single(adapter->pdev, busaddr,
 972                                 wrb->frag_len, PCI_DMA_TODEVICE);
 973                 }
 974                 num_wrbs++;
 975                 queue_tail_inc(txq);
 976         } while (cur_index != last_index);
 977
 978         atomic_sub(num_wrbs, &txq->used);
 979
 980         kfree_skb(sent_skb);
 981 }
 982
 983 static void be_rx_q_clean(struct be_adapter *adapter)
 984 {
 985         struct be_rx_page_info *page_info;
 986         struct be_queue_info *rxq = &adapter->rx_obj.q;
 987         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
 988         struct be_eth_rx_compl *rxcp;
 989         u16 tail;
 990
 991         /* First cleanup pending rx completions */
 992         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
 993                 be_rx_compl_discard(adapter, rxcp);
 994                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
 995         }
 996
 997         /* Then free posted rx buffer that were not used */
 998         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
 999         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1000                 page_info = get_rx_page_info(adapter, tail);
1001                 put_page(page_info->page);
1002                 memset(page_info, 0, sizeof(*page_info));
1003         }
1004         BUG_ON(atomic_read(&rxq->used));
1005 }
1006
1007 static void be_tx_q_clean(struct be_adapter *adapter)
1008 {
1009         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1010         struct sk_buff *sent_skb;
1011         struct be_queue_info *txq = &adapter->tx_obj.q;
1012         u16 last_index;
1013         bool dummy_wrb;
1014
1015         while (atomic_read(&txq->used)) {
1016                 sent_skb = sent_skbs[txq->tail];
1017                 last_index = txq->tail;
1018                 index_adv(&last_index,
1019                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1020                 be_tx_compl_process(adapter, last_index);
1021         }
1022 }
1023
1024 static void be_tx_queues_destroy(struct be_adapter *adapter)
1025 {
1026         struct be_queue_info *q;
1027
1028         q = &adapter->tx_obj.q;
1029         if (q->created)
1030                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1031         be_queue_free(adapter, q);
1032
1033         q = &adapter->tx_obj.cq;
1034         if (q->created)
1035                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1036         be_queue_free(adapter, q);
1037
1038         /* No more tx completions can be rcvd now; clean up if there are
1039          * any pending completions or pending tx requests */
1040         be_tx_q_clean(adapter);
1041
1042         q = &adapter->tx_eq.q;
1043         if (q->created)
1044                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1045         be_queue_free(adapter, q);
1046 }
1047
1048 static int be_tx_queues_create(struct be_adapter *adapter)
1049 {
1050         struct be_queue_info *eq, *q, *cq;
1051
1052         adapter->tx_eq.max_eqd = 0;
1053         adapter->tx_eq.min_eqd = 0;
1054         adapter->tx_eq.cur_eqd = 96;
1055         adapter->tx_eq.enable_aic = false;
1056         /* Alloc Tx Event queue */
1057         eq = &adapter->tx_eq.q;
1058         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1059                 return -1;
1060
1061         /* Ask BE to create Tx Event queue */
1062         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1063                 goto tx_eq_free;
1064         /* Alloc TX eth compl queue */
1065         cq = &adapter->tx_obj.cq;
1066         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1067                         sizeof(struct be_eth_tx_compl)))
1068                 goto tx_eq_destroy;
1069
1070         /* Ask BE to create Tx eth compl queue */
1071         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1072                 goto tx_cq_free;
1073
1074         /* Alloc TX eth queue */
1075         q = &adapter->tx_obj.q;
1076         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1077                 goto tx_cq_destroy;
1078
1079         /* Ask BE to create Tx eth queue */
1080         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1081                 goto tx_q_free;
1082         return 0;
1083
1084 tx_q_free:
1085         be_queue_free(adapter, q);
1086 tx_cq_destroy:
1087         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1088 tx_cq_free:
1089         be_queue_free(adapter, cq);
1090 tx_eq_destroy:
1091         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1092 tx_eq_free:
1093         be_queue_free(adapter, eq);
1094         return -1;
1095 }
1096
1097 static void be_rx_queues_destroy(struct be_adapter *adapter)
1098 {
1099         struct be_queue_info *q;
1100
1101         q = &adapter->rx_obj.q;
1102         if (q->created) {
1103                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1104                 be_rx_q_clean(adapter);
1105         }
1106         be_queue_free(adapter, q);
1107
1108         q = &adapter->rx_obj.cq;
1109         if (q->created)
1110                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1111         be_queue_free(adapter, q);
1112
1113         q = &adapter->rx_eq.q;
1114         if (q->created)
1115                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1116         be_queue_free(adapter, q);
1117 }
1118
1119 static int be_rx_queues_create(struct be_adapter *adapter)
1120 {
1121         struct be_queue_info *eq, *q, *cq;
1122         int rc;
1123
1124         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1125         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1126         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1127         adapter->rx_eq.min_eqd = 0;
1128         adapter->rx_eq.cur_eqd = 0;
1129         adapter->rx_eq.enable_aic = true;
1130
1131         /* Alloc Rx Event queue */
1132         eq = &adapter->rx_eq.q;
1133         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1134                                 sizeof(struct be_eq_entry));
1135         if (rc)
1136                 return rc;
1137
1138         /* Ask BE to create Rx Event queue */
1139         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1140         if (rc)
1141                 goto rx_eq_free;
1142
1143         /* Alloc RX eth compl queue */
1144         cq = &adapter->rx_obj.cq;
1145         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1146                         sizeof(struct be_eth_rx_compl));
1147         if (rc)
1148                 goto rx_eq_destroy;
1149
1150         /* Ask BE to create Rx eth compl queue */
1151         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1152         if (rc)
1153                 goto rx_cq_free;
1154
1155         /* Alloc RX eth queue */
1156         q = &adapter->rx_obj.q;
1157         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1158         if (rc)
1159                 goto rx_cq_destroy;
1160
1161         /* Ask BE to create Rx eth queue */
1162         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1163                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1164         if (rc)
1165                 goto rx_q_free;
1166
1167         return 0;
1168 rx_q_free:
1169         be_queue_free(adapter, q);
1170 rx_cq_destroy:
1171         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1172 rx_cq_free:
1173         be_queue_free(adapter, cq);
1174 rx_eq_destroy:
1175         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1176 rx_eq_free:
1177         be_queue_free(adapter, eq);
1178         return rc;
1179 }
1180 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1181 {
1182         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1183         u32 evt = entry->evt;
1184
1185         if (!evt)
1186                 return false;
1187
1188         evt = le32_to_cpu(evt);
1189         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1190         entry->evt = 0;
1191         queue_tail_inc(&eq_obj->q);
1192         return true;
1193 }
1194
1195 static int event_handle(struct be_ctrl_info *ctrl,
1196                         struct be_eq_obj *eq_obj)
1197 {
1198         u16 rid = 0, num = 0;
1199
1200         while (event_get(eq_obj, &rid))
1201                 num++;
1202
1203         /* We can see an interrupt and no event */
1204         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1205         if (num)
1206                 napi_schedule(&eq_obj->napi);
1207
1208         return num;
1209 }
1210
1211 static irqreturn_t be_intx(int irq, void *dev)
1212 {
1213         struct be_adapter *adapter = dev;
1214         struct be_ctrl_info *ctrl = &adapter->ctrl;
1215         int rx, tx;
1216
1217         tx = event_handle(ctrl, &adapter->tx_eq);
1218         rx = event_handle(ctrl, &adapter->rx_eq);
1219
1220         if (rx || tx)
1221                 return IRQ_HANDLED;
1222         else
1223                 return IRQ_NONE;
1224 }
1225
1226 static irqreturn_t be_msix_rx(int irq, void *dev)
1227 {
1228         struct be_adapter *adapter = dev;
1229
1230         event_handle(&adapter->ctrl, &adapter->rx_eq);
1231
1232         return IRQ_HANDLED;
1233 }
1234
1235 static irqreturn_t be_msix_tx(int irq, void *dev)
1236 {
1237         struct be_adapter *adapter = dev;
1238
1239         event_handle(&adapter->ctrl, &adapter->tx_eq);
1240
1241         return IRQ_HANDLED;
1242 }
1243
1244 static inline bool do_lro(struct be_adapter *adapter,
1245                         struct be_eth_rx_compl *rxcp)
1246 {
1247         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1248         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1249
1250         if (err)
1251                 drvr_stats(adapter)->be_rxcp_err++;
1252
1253         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1254                 false : true;
1255 }
1256
1257 int be_poll_rx(struct napi_struct *napi, int budget)
1258 {
1259         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1260         struct be_adapter *adapter =
1261                 container_of(rx_eq, struct be_adapter, rx_eq);
1262         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1263         struct be_eth_rx_compl *rxcp;
1264         u32 work_done;
1265
1266         for (work_done = 0; work_done < budget; work_done++) {
1267                 rxcp = be_rx_compl_get(adapter);
1268                 if (!rxcp)
1269                         break;
1270
1271                 if (do_lro(adapter, rxcp))
1272                         be_rx_compl_process_lro(adapter, rxcp);
1273                 else
1274                         be_rx_compl_process(adapter, rxcp);
1275         }
1276
1277         lro_flush_all(&adapter->rx_obj.lro_mgr);
1278
1279         /* Refill the queue */
1280         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1281                 be_post_rx_frags(adapter);
1282
1283         /* All consumed */
1284         if (work_done < budget) {
1285                 napi_complete(napi);
1286                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1287         } else {
1288                 /* More to be consumed; continue with interrupts disabled */
1289                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1290         }
1291         return work_done;
1292 }
1293
1294 /* For TX we don't honour budget; consume everything */
1295 int be_poll_tx(struct napi_struct *napi, int budget)
1296 {
1297         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1298         struct be_adapter *adapter =
1299                 container_of(tx_eq, struct be_adapter, tx_eq);
1300         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1301         struct be_queue_info *tx_cq = &tx_obj->cq;
1302         struct be_queue_info *txq = &tx_obj->q;
1303         struct be_eth_tx_compl *txcp;
1304         u32 num_cmpl = 0;
1305         u16 end_idx;
1306
1307         while ((txcp = be_tx_compl_get(adapter))) {
1308                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1309                                         wrb_index, txcp);
1310                 be_tx_compl_process(adapter, end_idx);
1311                 num_cmpl++;
1312         }
1313
1314         /* As Tx wrbs have been freed up, wake up netdev queue if
1315          * it was stopped due to lack of tx wrbs.
1316          */
1317         if (netif_queue_stopped(adapter->netdev) &&
1318                         atomic_read(&txq->used) < txq->len / 2) {
1319                 netif_wake_queue(adapter->netdev);
1320         }
1321
1322         napi_complete(napi);
1323
1324         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1325
1326         drvr_stats(adapter)->be_tx_events++;
1327         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1328
1329         return 1;
1330 }
1331
1332 static void be_worker(struct work_struct *work)
1333 {
1334         struct be_adapter *adapter =
1335                 container_of(work, struct be_adapter, work.work);
1336         int status;
1337
1338         /* Check link */
1339         be_link_status_update(adapter);
1340
1341         /* Get Stats */
1342         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1343         if (!status)
1344                 netdev_stats_update(adapter);
1345
1346         /* Set EQ delay */
1347         be_rx_eqd_update(adapter);
1348
1349         be_tx_rate_update(adapter);
1350         be_rx_rate_update(adapter);
1351
1352         if (adapter->rx_post_starved) {
1353                 adapter->rx_post_starved = false;
1354                 be_post_rx_frags(adapter);
1355         }
1356
1357         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1358 }
1359
1360 static void be_msix_enable(struct be_adapter *adapter)
1361 {
1362         int i, status;
1363
1364         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1365                 adapter->msix_entries[i].entry = i;
1366
1367         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1368                 BE_NUM_MSIX_VECTORS);
1369         if (status == 0)
1370                 adapter->msix_enabled = true;
1371         return;
1372 }
1373
1374 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1375 {
1376         return adapter->msix_entries[eq_id -
1377                         8 * adapter->ctrl.pci_func].vector;
1378 }
1379
1380 static int be_msix_register(struct be_adapter *adapter)
1381 {
1382         struct net_device *netdev = adapter->netdev;
1383         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1384         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1385         int status, vec;
1386
1387         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1388         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1389         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1390         if (status)
1391                 goto err;
1392
1393         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1394         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1395         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1396         if (status) { /* Free TX IRQ */
1397                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1398                 free_irq(vec, adapter);
1399                 goto err;
1400         }
1401         return 0;
1402 err:
1403         dev_warn(&adapter->pdev->dev,
1404                 "MSIX Request IRQ failed - err %d\n", status);
1405         pci_disable_msix(adapter->pdev);
1406         adapter->msix_enabled = false;
1407         return status;
1408 }
1409
1410 static int be_irq_register(struct be_adapter *adapter)
1411 {
1412         struct net_device *netdev = adapter->netdev;
1413         int status;
1414
1415         if (adapter->msix_enabled) {
1416                 status = be_msix_register(adapter);
1417                 if (status == 0)
1418                         goto done;
1419         }
1420
1421         /* INTx */
1422         netdev->irq = adapter->pdev->irq;
1423         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1424                         adapter);
1425         if (status) {
1426                 dev_err(&adapter->pdev->dev,
1427                         "INTx request IRQ failed - err %d\n", status);
1428                 return status;
1429         }
1430 done:
1431         adapter->isr_registered = true;
1432         return 0;
1433 }
1434
1435 static void be_irq_unregister(struct be_adapter *adapter)
1436 {
1437         struct net_device *netdev = adapter->netdev;
1438         int vec;
1439
1440         if (!adapter->isr_registered)
1441                 return;
1442
1443         /* INTx */
1444         if (!adapter->msix_enabled) {
1445                 free_irq(netdev->irq, adapter);
1446                 goto done;
1447         }
1448
1449         /* MSIx */
1450         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1451         free_irq(vec, adapter);
1452         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1453         free_irq(vec, adapter);
1454 done:
1455         adapter->isr_registered = false;
1456         return;
1457 }
1458
1459 static int be_open(struct net_device *netdev)
1460 {
1461         struct be_adapter *adapter = netdev_priv(netdev);
1462         struct be_ctrl_info *ctrl = &adapter->ctrl;
1463         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1464         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1465         u32 if_flags;
1466         int status;
1467
1468         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1469                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1470                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1471         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1472                         false/* pmac_invalid */, &adapter->if_handle,
1473                         &adapter->pmac_id);
1474         if (status != 0)
1475                 goto do_none;
1476
1477         be_vid_config(netdev);
1478
1479         status = be_cmd_set_flow_control(ctrl, true, true);
1480         if (status != 0)
1481                 goto if_destroy;
1482
1483         status = be_tx_queues_create(adapter);
1484         if (status != 0)
1485                 goto if_destroy;
1486
1487         status = be_rx_queues_create(adapter);
1488         if (status != 0)
1489                 goto tx_qs_destroy;
1490
1491         /* First time posting */
1492         be_post_rx_frags(adapter);
1493
1494         napi_enable(&rx_eq->napi);
1495         napi_enable(&tx_eq->napi);
1496
1497         be_irq_register(adapter);
1498
1499         be_intr_set(ctrl, true);
1500
1501         /* The evt queues are created in the unarmed state; arm them */
1502         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1503         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1504
1505         /* The compl queues are created in the unarmed state; arm them */
1506         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1507         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1508
1509         be_link_status_update(adapter);
1510
1511         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1512         return 0;
1513
1514 tx_qs_destroy:
1515         be_tx_queues_destroy(adapter);
1516 if_destroy:
1517         be_cmd_if_destroy(ctrl, adapter->if_handle);
1518 do_none:
1519         return status;
1520 }
1521
1522 static int be_close(struct net_device *netdev)
1523 {
1524         struct be_adapter *adapter = netdev_priv(netdev);
1525         struct be_ctrl_info *ctrl = &adapter->ctrl;
1526         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1527         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1528         int vec;
1529
1530         cancel_delayed_work(&adapter->work);
1531
1532         netif_stop_queue(netdev);
1533         netif_carrier_off(netdev);
1534         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1535
1536         be_intr_set(ctrl, false);
1537
1538         if (adapter->msix_enabled) {
1539                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1540                 synchronize_irq(vec);
1541                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1542                 synchronize_irq(vec);
1543         } else {
1544                 synchronize_irq(netdev->irq);
1545         }
1546         be_irq_unregister(adapter);
1547
1548         napi_disable(&rx_eq->napi);
1549         napi_disable(&tx_eq->napi);
1550
1551         be_rx_queues_destroy(adapter);
1552         be_tx_queues_destroy(adapter);
1553
1554         be_cmd_if_destroy(ctrl, adapter->if_handle);
1555         return 0;
1556 }
1557
1558 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1559                                 void **ip_hdr, void **tcpudp_hdr,
1560                                 u64 *hdr_flags, void *priv)
1561 {
1562         struct ethhdr *eh;
1563         struct vlan_ethhdr *veh;
1564         struct iphdr *iph;
1565         u8 *va = page_address(frag->page) + frag->page_offset;
1566         unsigned long ll_hlen;
1567
1568         prefetch(va);
1569         eh = (struct ethhdr *)va;
1570         *mac_hdr = eh;
1571         ll_hlen = ETH_HLEN;
1572         if (eh->h_proto != htons(ETH_P_IP)) {
1573                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1574                         veh = (struct vlan_ethhdr *)va;
1575                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1576                                 return -1;
1577
1578                         ll_hlen += VLAN_HLEN;
1579                 } else {
1580                         return -1;
1581                 }
1582         }
1583         *hdr_flags = LRO_IPV4;
1584         iph = (struct iphdr *)(va + ll_hlen);
1585         *ip_hdr = iph;
1586         if (iph->protocol != IPPROTO_TCP)
1587                 return -1;
1588         *hdr_flags |= LRO_TCP;
1589         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1590
1591         return 0;
1592 }
1593
1594 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1595 {
1596         struct net_lro_mgr *lro_mgr;
1597
1598         lro_mgr = &adapter->rx_obj.lro_mgr;
1599         lro_mgr->dev = netdev;
1600         lro_mgr->features = LRO_F_NAPI;
1601         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1602         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1603         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1604         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1605         lro_mgr->get_frag_header = be_get_frag_header;
1606         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1607 }
1608
1609 static struct net_device_ops be_netdev_ops = {
1610         .ndo_open               = be_open,
1611         .ndo_stop               = be_close,
1612         .ndo_start_xmit         = be_xmit,
1613         .ndo_get_stats          = be_get_stats,
1614         .ndo_set_rx_mode        = be_set_multicast_list,
1615         .ndo_set_mac_address    = be_mac_addr_set,
1616         .ndo_change_mtu         = be_change_mtu,
1617         .ndo_validate_addr      = eth_validate_addr,
1618         .ndo_vlan_rx_register   = be_vlan_register,
1619         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1620         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1621 };
1622
1623 static void be_netdev_init(struct net_device *netdev)
1624 {
1625         struct be_adapter *adapter = netdev_priv(netdev);
1626
1627         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1628                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1629                 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1630
1631         netdev->flags |= IFF_MULTICAST;
1632
1633         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1634
1635         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1636
1637         be_lro_init(adapter, netdev);
1638
1639         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1640                 BE_NAPI_WEIGHT);
1641         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1642                 BE_NAPI_WEIGHT);
1643
1644         netif_carrier_off(netdev);
1645         netif_stop_queue(netdev);
1646 }
1647
1648 static void be_unmap_pci_bars(struct be_adapter *adapter)
1649 {
1650         struct be_ctrl_info *ctrl = &adapter->ctrl;
1651         if (ctrl->csr)
1652                 iounmap(ctrl->csr);
1653         if (ctrl->db)
1654                 iounmap(ctrl->db);
1655         if (ctrl->pcicfg)
1656                 iounmap(ctrl->pcicfg);
1657 }
1658
1659 static int be_map_pci_bars(struct be_adapter *adapter)
1660 {
1661         u8 __iomem *addr;
1662
1663         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1664                         pci_resource_len(adapter->pdev, 2));
1665         if (addr == NULL)
1666                 return -ENOMEM;
1667         adapter->ctrl.csr = addr;
1668
1669         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1670                         128 * 1024);
1671         if (addr == NULL)
1672                 goto pci_map_err;
1673         adapter->ctrl.db = addr;
1674
1675         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1676                         pci_resource_len(adapter->pdev, 1));
1677         if (addr == NULL)
1678                 goto pci_map_err;
1679         adapter->ctrl.pcicfg = addr;
1680
1681         return 0;
1682 pci_map_err:
1683         be_unmap_pci_bars(adapter);
1684         return -ENOMEM;
1685 }
1686
1687
1688 static void be_ctrl_cleanup(struct be_adapter *adapter)
1689 {
1690         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1691
1692         be_unmap_pci_bars(adapter);
1693
1694         if (mem->va)
1695                 pci_free_consistent(adapter->pdev, mem->size,
1696                         mem->va, mem->dma);
1697 }
1698
1699 /* Initialize the mbox required to send cmds to BE */
1700 static int be_ctrl_init(struct be_adapter *adapter)
1701 {
1702         struct be_ctrl_info *ctrl = &adapter->ctrl;
1703         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1704         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1705         int status;
1706         u32 val;
1707
1708         status = be_map_pci_bars(adapter);
1709         if (status)
1710                 return status;
1711
1712         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1713         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1714                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1715         if (!mbox_mem_alloc->va) {
1716                 be_unmap_pci_bars(adapter);
1717                 return -1;
1718         }
1719         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1720         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1721         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1722         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1723         spin_lock_init(&ctrl->cmd_lock);
1724
1725         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1726         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1727                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1728         return 0;
1729 }
1730
1731 static void be_stats_cleanup(struct be_adapter *adapter)
1732 {
1733         struct be_stats_obj *stats = &adapter->stats;
1734         struct be_dma_mem *cmd = &stats->cmd;
1735
1736         if (cmd->va)
1737                 pci_free_consistent(adapter->pdev, cmd->size,
1738                         cmd->va, cmd->dma);
1739 }
1740
1741 static int be_stats_init(struct be_adapter *adapter)
1742 {
1743         struct be_stats_obj *stats = &adapter->stats;
1744         struct be_dma_mem *cmd = &stats->cmd;
1745
1746         cmd->size = sizeof(struct be_cmd_req_get_stats);
1747         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1748         if (cmd->va == NULL)
1749                 return -1;
1750         return 0;
1751 }
1752
1753 static void __devexit be_remove(struct pci_dev *pdev)
1754 {
1755         struct be_adapter *adapter = pci_get_drvdata(pdev);
1756         if (!adapter)
1757                 return;
1758
1759         unregister_netdev(adapter->netdev);
1760
1761         be_stats_cleanup(adapter);
1762
1763         be_ctrl_cleanup(adapter);
1764
1765         if (adapter->msix_enabled) {
1766                 pci_disable_msix(adapter->pdev);
1767                 adapter->msix_enabled = false;
1768         }
1769
1770         pci_set_drvdata(pdev, NULL);
1771         pci_release_regions(pdev);
1772         pci_disable_device(pdev);
1773
1774         free_netdev(adapter->netdev);
1775 }
1776
1777 static int be_hw_up(struct be_adapter *adapter)
1778 {
1779         struct be_ctrl_info *ctrl = &adapter->ctrl;
1780         int status;
1781
1782         status = be_cmd_POST(ctrl);
1783         if (status)
1784                 return status;
1785
1786         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1787         if (status)
1788                 return status;
1789
1790         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1791         return status;
1792 }
1793
1794 static int __devinit be_probe(struct pci_dev *pdev,
1795                         const struct pci_device_id *pdev_id)
1796 {
1797         int status = 0;
1798         struct be_adapter *adapter;
1799         struct net_device *netdev;
1800         struct be_ctrl_info *ctrl;
1801         u8 mac[ETH_ALEN];
1802
1803         status = pci_enable_device(pdev);
1804         if (status)
1805                 goto do_none;
1806
1807         status = pci_request_regions(pdev, DRV_NAME);
1808         if (status)
1809                 goto disable_dev;
1810         pci_set_master(pdev);
1811
1812         netdev = alloc_etherdev(sizeof(struct be_adapter));
1813         if (netdev == NULL) {
1814                 status = -ENOMEM;
1815                 goto rel_reg;
1816         }
1817         adapter = netdev_priv(netdev);
1818         adapter->pdev = pdev;
1819         pci_set_drvdata(pdev, adapter);
1820         adapter->netdev = netdev;
1821
1822         be_msix_enable(adapter);
1823
1824         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1825         if (!status) {
1826                 netdev->features |= NETIF_F_HIGHDMA;
1827         } else {
1828                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1829                 if (status) {
1830                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1831                         goto free_netdev;
1832                 }
1833         }
1834
1835         ctrl = &adapter->ctrl;
1836         status = be_ctrl_init(adapter);
1837         if (status)
1838                 goto free_netdev;
1839
1840         status = be_stats_init(adapter);
1841         if (status)
1842                 goto ctrl_clean;
1843
1844         status = be_hw_up(adapter);
1845         if (status)
1846                 goto stats_clean;
1847
1848         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1849                         true /* permanent */, 0);
1850         if (status)
1851                 goto stats_clean;
1852         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1853
1854         INIT_DELAYED_WORK(&adapter->work, be_worker);
1855         be_netdev_init(netdev);
1856         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1857
1858         status = register_netdev(netdev);
1859         if (status != 0)
1860                 goto stats_clean;
1861
1862         dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
1863         return 0;
1864
1865 stats_clean:
1866         be_stats_cleanup(adapter);
1867 ctrl_clean:
1868         be_ctrl_cleanup(adapter);
1869 free_netdev:
1870         free_netdev(adapter->netdev);
1871 rel_reg:
1872         pci_release_regions(pdev);
1873 disable_dev:
1874         pci_disable_device(pdev);
1875 do_none:
1876         dev_warn(&pdev->dev, BE_NAME " initialization failed\n");
1877         return status;
1878 }
1879
1880 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1881 {
1882         struct be_adapter *adapter = pci_get_drvdata(pdev);
1883         struct net_device *netdev =  adapter->netdev;
1884
1885         netif_device_detach(netdev);
1886         if (netif_running(netdev)) {
1887                 rtnl_lock();
1888                 be_close(netdev);
1889                 rtnl_unlock();
1890         }
1891
1892         pci_save_state(pdev);
1893         pci_disable_device(pdev);
1894         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1895         return 0;
1896 }
1897
1898 static int be_resume(struct pci_dev *pdev)
1899 {
1900         int status = 0;
1901         struct be_adapter *adapter = pci_get_drvdata(pdev);
1902         struct net_device *netdev =  adapter->netdev;
1903
1904         netif_device_detach(netdev);
1905
1906         status = pci_enable_device(pdev);
1907         if (status)
1908                 return status;
1909
1910         pci_set_power_state(pdev, 0);
1911         pci_restore_state(pdev);
1912
1913         if (netif_running(netdev)) {
1914                 rtnl_lock();
1915                 be_open(netdev);
1916                 rtnl_unlock();
1917         }
1918         netif_device_attach(netdev);
1919         return 0;
1920 }
1921
1922 static struct pci_driver be_driver = {
1923         .name = DRV_NAME,
1924         .id_table = be_dev_ids,
1925         .probe = be_probe,
1926         .remove = be_remove,
1927         .suspend = be_suspend,
1928         .resume = be_resume
1929 };
1930
1931 static int __init be_init_module(void)
1932 {
1933         if (rx_frag_size != 8192 && rx_frag_size != 4096
1934                 && rx_frag_size != 2048) {
1935                 printk(KERN_WARNING DRV_NAME
1936                         " : Module param rx_frag_size must be 2048/4096/8192."
1937                         " Using 2048\n");
1938                 rx_frag_size = 2048;
1939         }
1940         /* Ensure rx_frag_size is aligned to chache line */
1941         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1942                 printk(KERN_WARNING DRV_NAME
1943                         " : Bad module param rx_frag_size. Using 2048\n");
1944                 rx_frag_size = 2048;
1945         }
1946
1947         return pci_register_driver(&be_driver);
1948 }
1949 module_init(be_init_module);
1950
1951 static void __exit be_exit_module(void)
1952 {
1953         pci_unregister_driver(&be_driver);
1954 }
1955 module_exit(be_exit_module);