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
 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         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 482         return NETDEV_TX_OK;
 483 }
 484
 485 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 486 {
 487         struct be_adapter *adapter = netdev_priv(netdev);
 488         if (new_mtu < BE_MIN_MTU ||
 489                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 490                 dev_info(&adapter->pdev->dev,
 491                         "MTU must be between %d and %d bytes\n",
 492                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 493                 return -EINVAL;
 494         }
 495         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 496                         netdev->mtu, new_mtu);
 497         netdev->mtu = new_mtu;
 498         return 0;
 499 }
 500
 501 /*
 502  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 503  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 504  * set the BE in promiscuous VLAN mode.
 505  */
 506 static void be_vid_config(struct net_device *netdev)
 507 {
 508         struct be_adapter *adapter = netdev_priv(netdev);
 509         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 510         u16 ntags = 0, i;
 511
 512         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 513                 /* Construct VLAN Table to give to HW */
 514                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 515                         if (adapter->vlan_tag[i]) {
 516                                 vtag[ntags] = cpu_to_le16(i);
 517                                 ntags++;
 518                         }
 519                 }
 520                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 521                         vtag, ntags, 1, 0);
 522         } else {
 523                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 524                         NULL, 0, 1, 1);
 525         }
 526 }
 527
 528 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 529 {
 530         struct be_adapter *adapter = netdev_priv(netdev);
 531         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 532         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 533         struct be_ctrl_info *ctrl = &adapter->ctrl;
 534
 535         be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
 536         be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
 537         adapter->vlan_grp = grp;
 538         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
 539         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
 540 }
 541
 542 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 543 {
 544         struct be_adapter *adapter = netdev_priv(netdev);
 545
 546         adapter->num_vlans++;
 547         adapter->vlan_tag[vid] = 1;
 548
 549         be_vid_config(netdev);
 550 }
 551
 552 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 553 {
 554         struct be_adapter *adapter = netdev_priv(netdev);
 555
 556         adapter->num_vlans--;
 557         adapter->vlan_tag[vid] = 0;
 558
 559         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 560         be_vid_config(netdev);
 561 }
 562
 563 static void be_set_multicast_filter(struct net_device *netdev)
 564 {
 565         struct be_adapter *adapter = netdev_priv(netdev);
 566         struct dev_mc_list *mc_ptr;
 567         u8 mac_addr[32][ETH_ALEN];
 568         int i = 0;
 569
 570         if (netdev->flags & IFF_ALLMULTI) {
 571                 /* set BE in Multicast promiscuous */
 572                 be_cmd_mcast_mac_set(&adapter->ctrl,
 573                                         adapter->if_handle, NULL, 0, true);
 574                 return;
 575         }
 576
 577         for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
 578                 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
 579                 if (++i >= 32) {
 580                         be_cmd_mcast_mac_set(&adapter->ctrl,
 581                                 adapter->if_handle, &mac_addr[0][0], i, false);
 582                         i = 0;
 583                 }
 584
 585         }
 586
 587         if (i) {
 588                 /* reset the promiscuous mode also. */
 589                 be_cmd_mcast_mac_set(&adapter->ctrl,
 590                         adapter->if_handle, &mac_addr[0][0], i, false);
 591         }
 592 }
 593
 594 static void be_set_multicast_list(struct net_device *netdev)
 595 {
 596         struct be_adapter *adapter = netdev_priv(netdev);
 597
 598         if (netdev->flags & IFF_PROMISC) {
 599                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
 600         } else {
 601                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
 602                 be_set_multicast_filter(netdev);
 603         }
 604 }
 605
 606 static void be_rx_rate_update(struct be_adapter *adapter)
 607 {
 608         struct be_drvr_stats *stats = drvr_stats(adapter);
 609         ulong now = jiffies;
 610
 611         /* Wrapped around */
 612         if (time_before(now, stats->be_rx_jiffies)) {
 613                 stats->be_rx_jiffies = now;
 614                 return;
 615         }
 616
 617         /* Update the rate once in two seconds */
 618         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 619                 return;
 620
 621         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 622                                           - stats->be_rx_bytes_prev,
 623                                          now - stats->be_rx_jiffies);
 624         stats->be_rx_jiffies = now;
 625         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 626 }
 627
 628 static void be_rx_stats_update(struct be_adapter *adapter,
 629                 u32 pktsize, u16 numfrags)
 630 {
 631         struct be_drvr_stats *stats = drvr_stats(adapter);
 632
 633         stats->be_rx_compl++;
 634         stats->be_rx_frags += numfrags;
 635         stats->be_rx_bytes += pktsize;
 636 }
 637
 638 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 639 {
 640         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 641
 642         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 643         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 644         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 645         if (ip_version) {
 646                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 647                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 648         }
 649         ipv6_chk = (ip_version && (tcpf || udpf));
 650
 651         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 652 }
 653
 654 static struct be_rx_page_info *
 655 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 656 {
 657         struct be_rx_page_info *rx_page_info;
 658         struct be_queue_info *rxq = &adapter->rx_obj.q;
 659
 660         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 661         BUG_ON(!rx_page_info->page);
 662
 663         if (rx_page_info->last_page_user)
 664                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 665                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 666
 667         atomic_dec(&rxq->used);
 668         return rx_page_info;
 669 }
 670
 671 /* Throwaway the data in the Rx completion */
 672 static void be_rx_compl_discard(struct be_adapter *adapter,
 673                         struct be_eth_rx_compl *rxcp)
 674 {
 675         struct be_queue_info *rxq = &adapter->rx_obj.q;
 676         struct be_rx_page_info *page_info;
 677         u16 rxq_idx, i, num_rcvd;
 678
 679         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 680         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 681
 682         for (i = 0; i < num_rcvd; i++) {
 683                 page_info = get_rx_page_info(adapter, rxq_idx);
 684                 put_page(page_info->page);
 685                 memset(page_info, 0, sizeof(*page_info));
 686                 index_inc(&rxq_idx, rxq->len);
 687         }
 688 }
 689
 690 /*
 691  * skb_fill_rx_data forms a complete skb for an ether frame
 692  * indicated by rxcp.
 693  */
 694 static void skb_fill_rx_data(struct be_adapter *adapter,
 695                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 696 {
 697         struct be_queue_info *rxq = &adapter->rx_obj.q;
 698         struct be_rx_page_info *page_info;
 699         u16 rxq_idx, i, num_rcvd;
 700         u32 pktsize, hdr_len, curr_frag_len;
 701         u8 *start;
 702
 703         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 704         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 705         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 706
 707         page_info = get_rx_page_info(adapter, rxq_idx);
 708
 709         start = page_address(page_info->page) + page_info->page_offset;
 710         prefetch(start);
 711
 712         /* Copy data in the first descriptor of this completion */
 713         curr_frag_len = min(pktsize, rx_frag_size);
 714
 715         /* Copy the header portion into skb_data */
 716         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 717         memcpy(skb->data, start, hdr_len);
 718         skb->len = curr_frag_len;
 719         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 720                 /* Complete packet has now been moved to data */
 721                 put_page(page_info->page);
 722                 skb->data_len = 0;
 723                 skb->tail += curr_frag_len;
 724         } else {
 725                 skb_shinfo(skb)->nr_frags = 1;
 726                 skb_shinfo(skb)->frags[0].page = page_info->page;
 727                 skb_shinfo(skb)->frags[0].page_offset =
 728                                         page_info->page_offset + hdr_len;
 729                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 730                 skb->data_len = curr_frag_len - hdr_len;
 731                 skb->tail += hdr_len;
 732         }
 733         memset(page_info, 0, sizeof(*page_info));
 734
 735         if (pktsize <= rx_frag_size) {
 736                 BUG_ON(num_rcvd != 1);
 737                 return;
 738         }
 739
 740         /* More frags present for this completion */
 741         pktsize -= curr_frag_len; /* account for above copied frag */
 742         for (i = 1; i < num_rcvd; i++) {
 743                 index_inc(&rxq_idx, rxq->len);
 744                 page_info = get_rx_page_info(adapter, rxq_idx);
 745
 746                 curr_frag_len = min(pktsize, rx_frag_size);
 747
 748                 skb_shinfo(skb)->frags[i].page = page_info->page;
 749                 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
 750                 skb_shinfo(skb)->frags[i].size = curr_frag_len;
 751                 skb->len += curr_frag_len;
 752                 skb->data_len += curr_frag_len;
 753                 skb_shinfo(skb)->nr_frags++;
 754                 pktsize -= curr_frag_len;
 755
 756                 memset(page_info, 0, sizeof(*page_info));
 757         }
 758
 759         be_rx_stats_update(adapter, pktsize, num_rcvd);
 760         return;
 761 }
 762
 763 /* Process the RX completion indicated by rxcp when LRO is disabled */
 764 static void be_rx_compl_process(struct be_adapter *adapter,
 765                         struct be_eth_rx_compl *rxcp)
 766 {
 767         struct sk_buff *skb;
 768         u32 vtp, vid;
 769
 770         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 771
 772         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 773         if (!skb) {
 774                 if (net_ratelimit())
 775                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 776                 be_rx_compl_discard(adapter, rxcp);
 777                 return;
 778         }
 779
 780         skb_reserve(skb, NET_IP_ALIGN);
 781
 782         skb_fill_rx_data(adapter, skb, rxcp);
 783
 784         if (do_pkt_csum(rxcp, adapter->rx_csum))
 785                 skb->ip_summed = CHECKSUM_NONE;
 786         else
 787                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 788
 789         skb->truesize = skb->len + sizeof(struct sk_buff);
 790         skb->protocol = eth_type_trans(skb, adapter->netdev);
 791         skb->dev = adapter->netdev;
 792
 793         if (vtp) {
 794                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 795                         kfree_skb(skb);
 796                         return;
 797                 }
 798                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 799                 vid = be16_to_cpu(vid);
 800                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 801         } else {
 802                 netif_receive_skb(skb);
 803         }
 804
 805         adapter->netdev->last_rx = jiffies;
 806
 807         return;
 808 }
 809
 810 /* Process the RX completion indicated by rxcp when LRO is enabled */
 811 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 812                         struct be_eth_rx_compl *rxcp)
 813 {
 814         struct be_rx_page_info *page_info;
 815         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 816         struct be_queue_info *rxq = &adapter->rx_obj.q;
 817         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 818         u16 i, rxq_idx = 0, vid;
 819
 820         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 821         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 822         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 823         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 824
 825         remaining = pkt_size;
 826         for (i = 0; i < num_rcvd; i++) {
 827                 page_info = get_rx_page_info(adapter, rxq_idx);
 828
 829                 curr_frag_len = min(remaining, rx_frag_size);
 830
 831                 rx_frags[i].page = page_info->page;
 832                 rx_frags[i].page_offset = page_info->page_offset;
 833                 rx_frags[i].size = curr_frag_len;
 834                 remaining -= curr_frag_len;
 835
 836                 index_inc(&rxq_idx, rxq->len);
 837
 838                 memset(page_info, 0, sizeof(*page_info));
 839         }
 840
 841         if (likely(!vlanf)) {
 842                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 843                                 pkt_size, NULL, 0);
 844         } else {
 845                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 846                 vid = be16_to_cpu(vid);
 847
 848                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 849                         return;
 850
 851                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 852                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 853                         vid, NULL, 0);
 854         }
 855
 856         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 857         return;
 858 }
 859
 860 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 861 {
 862         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 863
 864         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 865                 return NULL;
 866
 867         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 868
 869         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 870
 871         queue_tail_inc(&adapter->rx_obj.cq);
 872         return rxcp;
 873 }
 874
 875 static inline struct page *be_alloc_pages(u32 size)
 876 {
 877         gfp_t alloc_flags = GFP_ATOMIC;
 878         u32 order = get_order(size);
 879         if (order > 0)
 880                 alloc_flags |= __GFP_COMP;
 881         return  alloc_pages(alloc_flags, order);
 882 }
 883
 884 /*
 885  * Allocate a page, split it to fragments of size rx_frag_size and post as
 886  * receive buffers to BE
 887  */
 888 static void be_post_rx_frags(struct be_adapter *adapter)
 889 {
 890         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 891         struct be_rx_page_info *page_info = NULL;
 892         struct be_queue_info *rxq = &adapter->rx_obj.q;
 893         struct page *pagep = NULL;
 894         struct be_eth_rx_d *rxd;
 895         u64 page_dmaaddr = 0, frag_dmaaddr;
 896         u32 posted, page_offset = 0;
 897
 898         page_info = &page_info_tbl[rxq->head];
 899         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 900                 if (!pagep) {
 901                         pagep = be_alloc_pages(adapter->big_page_size);
 902                         if (unlikely(!pagep)) {
 903                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 904                                 break;
 905                         }
 906                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 907                                                 adapter->big_page_size,
 908                                                 PCI_DMA_FROMDEVICE);
 909                         page_info->page_offset = 0;
 910                 } else {
 911                         get_page(pagep);
 912                         page_info->page_offset = page_offset + rx_frag_size;
 913                 }
 914                 page_offset = page_info->page_offset;
 915                 page_info->page = pagep;
 916                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 917                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 918
 919                 rxd = queue_head_node(rxq);
 920                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 921                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 922                 queue_head_inc(rxq);
 923
 924                 /* Any space left in the current big page for another frag? */
 925                 if ((page_offset + rx_frag_size + rx_frag_size) >
 926                                         adapter->big_page_size) {
 927                         pagep = NULL;
 928                         page_info->last_page_user = true;
 929                 }
 930                 page_info = &page_info_tbl[rxq->head];
 931         }
 932         if (pagep)
 933                 page_info->last_page_user = true;
 934
 935         if (posted) {
 936                 atomic_add(posted, &rxq->used);
 937                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 938         } else if (atomic_read(&rxq->used) == 0) {
 939                 /* Let be_worker replenish when memory is available */
 940                 adapter->rx_post_starved = true;
 941         }
 942
 943         return;
 944 }
 945
 946 static struct be_eth_tx_compl *
 947 be_tx_compl_get(struct be_adapter *adapter)
 948 {
 949         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 950         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 951
 952         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 953                 return NULL;
 954
 955         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 956
 957         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 958
 959         queue_tail_inc(tx_cq);
 960         return txcp;
 961 }
 962
 963 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 964 {
 965         struct be_queue_info *txq = &adapter->tx_obj.q;
 966         struct be_eth_wrb *wrb;
 967         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 968         struct sk_buff *sent_skb;
 969         u64 busaddr;
 970         u16 cur_index, num_wrbs = 0;
 971
 972         cur_index = txq->tail;
 973         sent_skb = sent_skbs[cur_index];
 974         BUG_ON(!sent_skb);
 975         sent_skbs[cur_index] = NULL;
 976
 977         do {
 978                 cur_index = txq->tail;
 979                 wrb = queue_tail_node(txq);
 980                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 981                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 982                 if (busaddr != 0) {
 983                         pci_unmap_single(adapter->pdev, busaddr,
 984                                 wrb->frag_len, PCI_DMA_TODEVICE);
 985                 }
 986                 num_wrbs++;
 987                 queue_tail_inc(txq);
 988         } while (cur_index != last_index);
 989
 990         atomic_sub(num_wrbs, &txq->used);
 991
 992         kfree_skb(sent_skb);
 993 }
 994
 995 static void be_rx_q_clean(struct be_adapter *adapter)
 996 {
 997         struct be_rx_page_info *page_info;
 998         struct be_queue_info *rxq = &adapter->rx_obj.q;
 999         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1000         struct be_eth_rx_compl *rxcp;
1001         u16 tail;
1002
1003         /* First cleanup pending rx completions */
1004         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1005                 be_rx_compl_discard(adapter, rxcp);
1006                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1007         }
1008
1009         /* Then free posted rx buffer that were not used */
1010         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1011         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1012                 page_info = get_rx_page_info(adapter, tail);
1013                 put_page(page_info->page);
1014                 memset(page_info, 0, sizeof(*page_info));
1015         }
1016         BUG_ON(atomic_read(&rxq->used));
1017 }
1018
1019 static void be_tx_q_clean(struct be_adapter *adapter)
1020 {
1021         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1022         struct sk_buff *sent_skb;
1023         struct be_queue_info *txq = &adapter->tx_obj.q;
1024         u16 last_index;
1025         bool dummy_wrb;
1026
1027         while (atomic_read(&txq->used)) {
1028                 sent_skb = sent_skbs[txq->tail];
1029                 last_index = txq->tail;
1030                 index_adv(&last_index,
1031                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1032                 be_tx_compl_process(adapter, last_index);
1033         }
1034 }
1035
1036 static void be_tx_queues_destroy(struct be_adapter *adapter)
1037 {
1038         struct be_queue_info *q;
1039
1040         q = &adapter->tx_obj.q;
1041         if (q->created)
1042                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1043         be_queue_free(adapter, q);
1044
1045         q = &adapter->tx_obj.cq;
1046         if (q->created)
1047                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1048         be_queue_free(adapter, q);
1049
1050         /* No more tx completions can be rcvd now; clean up if there are
1051          * any pending completions or pending tx requests */
1052         be_tx_q_clean(adapter);
1053
1054         q = &adapter->tx_eq.q;
1055         if (q->created)
1056                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1057         be_queue_free(adapter, q);
1058 }
1059
1060 static int be_tx_queues_create(struct be_adapter *adapter)
1061 {
1062         struct be_queue_info *eq, *q, *cq;
1063
1064         adapter->tx_eq.max_eqd = 0;
1065         adapter->tx_eq.min_eqd = 0;
1066         adapter->tx_eq.cur_eqd = 96;
1067         adapter->tx_eq.enable_aic = false;
1068         /* Alloc Tx Event queue */
1069         eq = &adapter->tx_eq.q;
1070         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1071                 return -1;
1072
1073         /* Ask BE to create Tx Event queue */
1074         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1075                 goto tx_eq_free;
1076         /* Alloc TX eth compl queue */
1077         cq = &adapter->tx_obj.cq;
1078         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1079                         sizeof(struct be_eth_tx_compl)))
1080                 goto tx_eq_destroy;
1081
1082         /* Ask BE to create Tx eth compl queue */
1083         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1084                 goto tx_cq_free;
1085
1086         /* Alloc TX eth queue */
1087         q = &adapter->tx_obj.q;
1088         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1089                 goto tx_cq_destroy;
1090
1091         /* Ask BE to create Tx eth queue */
1092         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1093                 goto tx_q_free;
1094         return 0;
1095
1096 tx_q_free:
1097         be_queue_free(adapter, q);
1098 tx_cq_destroy:
1099         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1100 tx_cq_free:
1101         be_queue_free(adapter, cq);
1102 tx_eq_destroy:
1103         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1104 tx_eq_free:
1105         be_queue_free(adapter, eq);
1106         return -1;
1107 }
1108
1109 static void be_rx_queues_destroy(struct be_adapter *adapter)
1110 {
1111         struct be_queue_info *q;
1112
1113         q = &adapter->rx_obj.q;
1114         if (q->created) {
1115                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1116                 be_rx_q_clean(adapter);
1117         }
1118         be_queue_free(adapter, q);
1119
1120         q = &adapter->rx_obj.cq;
1121         if (q->created)
1122                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1123         be_queue_free(adapter, q);
1124
1125         q = &adapter->rx_eq.q;
1126         if (q->created)
1127                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1128         be_queue_free(adapter, q);
1129 }
1130
1131 static int be_rx_queues_create(struct be_adapter *adapter)
1132 {
1133         struct be_queue_info *eq, *q, *cq;
1134         int rc;
1135
1136         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1137         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1138         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1139         adapter->rx_eq.min_eqd = 0;
1140         adapter->rx_eq.cur_eqd = 0;
1141         adapter->rx_eq.enable_aic = true;
1142
1143         /* Alloc Rx Event queue */
1144         eq = &adapter->rx_eq.q;
1145         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1146                                 sizeof(struct be_eq_entry));
1147         if (rc)
1148                 return rc;
1149
1150         /* Ask BE to create Rx Event queue */
1151         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1152         if (rc)
1153                 goto rx_eq_free;
1154
1155         /* Alloc RX eth compl queue */
1156         cq = &adapter->rx_obj.cq;
1157         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1158                         sizeof(struct be_eth_rx_compl));
1159         if (rc)
1160                 goto rx_eq_destroy;
1161
1162         /* Ask BE to create Rx eth compl queue */
1163         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1164         if (rc)
1165                 goto rx_cq_free;
1166
1167         /* Alloc RX eth queue */
1168         q = &adapter->rx_obj.q;
1169         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1170         if (rc)
1171                 goto rx_cq_destroy;
1172
1173         /* Ask BE to create Rx eth queue */
1174         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1175                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1176         if (rc)
1177                 goto rx_q_free;
1178
1179         return 0;
1180 rx_q_free:
1181         be_queue_free(adapter, q);
1182 rx_cq_destroy:
1183         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1184 rx_cq_free:
1185         be_queue_free(adapter, cq);
1186 rx_eq_destroy:
1187         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1188 rx_eq_free:
1189         be_queue_free(adapter, eq);
1190         return rc;
1191 }
1192 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1193 {
1194         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1195         u32 evt = entry->evt;
1196
1197         if (!evt)
1198                 return false;
1199
1200         evt = le32_to_cpu(evt);
1201         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1202         entry->evt = 0;
1203         queue_tail_inc(&eq_obj->q);
1204         return true;
1205 }
1206
1207 static int event_handle(struct be_ctrl_info *ctrl,
1208                         struct be_eq_obj *eq_obj)
1209 {
1210         u16 rid = 0, num = 0;
1211
1212         while (event_get(eq_obj, &rid))
1213                 num++;
1214
1215         /* We can see an interrupt and no event */
1216         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1217         if (num)
1218                 napi_schedule(&eq_obj->napi);
1219
1220         return num;
1221 }
1222
1223 static irqreturn_t be_intx(int irq, void *dev)
1224 {
1225         struct be_adapter *adapter = dev;
1226         struct be_ctrl_info *ctrl = &adapter->ctrl;
1227         int rx, tx;
1228
1229         tx = event_handle(ctrl, &adapter->tx_eq);
1230         rx = event_handle(ctrl, &adapter->rx_eq);
1231
1232         if (rx || tx)
1233                 return IRQ_HANDLED;
1234         else
1235                 return IRQ_NONE;
1236 }
1237
1238 static irqreturn_t be_msix_rx(int irq, void *dev)
1239 {
1240         struct be_adapter *adapter = dev;
1241
1242         event_handle(&adapter->ctrl, &adapter->rx_eq);
1243
1244         return IRQ_HANDLED;
1245 }
1246
1247 static irqreturn_t be_msix_tx(int irq, void *dev)
1248 {
1249         struct be_adapter *adapter = dev;
1250
1251         event_handle(&adapter->ctrl, &adapter->tx_eq);
1252
1253         return IRQ_HANDLED;
1254 }
1255
1256 static inline bool do_lro(struct be_adapter *adapter,
1257                         struct be_eth_rx_compl *rxcp)
1258 {
1259         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1260         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1261
1262         if (err)
1263                 drvr_stats(adapter)->be_rxcp_err++;
1264
1265         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1266                 false : true;
1267 }
1268
1269 int be_poll_rx(struct napi_struct *napi, int budget)
1270 {
1271         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1272         struct be_adapter *adapter =
1273                 container_of(rx_eq, struct be_adapter, rx_eq);
1274         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1275         struct be_eth_rx_compl *rxcp;
1276         u32 work_done;
1277
1278         for (work_done = 0; work_done < budget; work_done++) {
1279                 rxcp = be_rx_compl_get(adapter);
1280                 if (!rxcp)
1281                         break;
1282
1283                 if (do_lro(adapter, rxcp))
1284                         be_rx_compl_process_lro(adapter, rxcp);
1285                 else
1286                         be_rx_compl_process(adapter, rxcp);
1287         }
1288
1289         lro_flush_all(&adapter->rx_obj.lro_mgr);
1290
1291         /* Refill the queue */
1292         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1293                 be_post_rx_frags(adapter);
1294
1295         /* All consumed */
1296         if (work_done < budget) {
1297                 napi_complete(napi);
1298                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1299         } else {
1300                 /* More to be consumed; continue with interrupts disabled */
1301                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1302         }
1303         return work_done;
1304 }
1305
1306 /* For TX we don't honour budget; consume everything */
1307 int be_poll_tx(struct napi_struct *napi, int budget)
1308 {
1309         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1310         struct be_adapter *adapter =
1311                 container_of(tx_eq, struct be_adapter, tx_eq);
1312         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1313         struct be_queue_info *tx_cq = &tx_obj->cq;
1314         struct be_queue_info *txq = &tx_obj->q;
1315         struct be_eth_tx_compl *txcp;
1316         u32 num_cmpl = 0;
1317         u16 end_idx;
1318
1319         while ((txcp = be_tx_compl_get(adapter))) {
1320                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1321                                         wrb_index, txcp);
1322                 be_tx_compl_process(adapter, end_idx);
1323                 num_cmpl++;
1324         }
1325
1326         /* As Tx wrbs have been freed up, wake up netdev queue if
1327          * it was stopped due to lack of tx wrbs.
1328          */
1329         if (netif_queue_stopped(adapter->netdev) &&
1330                         atomic_read(&txq->used) < txq->len / 2) {
1331                 netif_wake_queue(adapter->netdev);
1332         }
1333
1334         napi_complete(napi);
1335
1336         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1337
1338         drvr_stats(adapter)->be_tx_events++;
1339         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1340
1341         return 1;
1342 }
1343
1344 static void be_worker(struct work_struct *work)
1345 {
1346         struct be_adapter *adapter =
1347                 container_of(work, struct be_adapter, work.work);
1348         int status;
1349
1350         /* Check link */
1351         be_link_status_update(adapter);
1352
1353         /* Get Stats */
1354         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1355         if (!status)
1356                 netdev_stats_update(adapter);
1357
1358         /* Set EQ delay */
1359         be_rx_eqd_update(adapter);
1360
1361         be_tx_rate_update(adapter);
1362         be_rx_rate_update(adapter);
1363
1364         if (adapter->rx_post_starved) {
1365                 adapter->rx_post_starved = false;
1366                 be_post_rx_frags(adapter);
1367         }
1368
1369         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1370 }
1371
1372 static void be_msix_enable(struct be_adapter *adapter)
1373 {
1374         int i, status;
1375
1376         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1377                 adapter->msix_entries[i].entry = i;
1378
1379         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1380                 BE_NUM_MSIX_VECTORS);
1381         if (status == 0)
1382                 adapter->msix_enabled = true;
1383         return;
1384 }
1385
1386 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1387 {
1388         return adapter->msix_entries[eq_id -
1389                         8 * adapter->ctrl.pci_func].vector;
1390 }
1391
1392 static int be_msix_register(struct be_adapter *adapter)
1393 {
1394         struct net_device *netdev = adapter->netdev;
1395         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1396         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1397         int status, vec;
1398
1399         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1400         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1401         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1402         if (status)
1403                 goto err;
1404
1405         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1406         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1407         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1408         if (status) { /* Free TX IRQ */
1409                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1410                 free_irq(vec, adapter);
1411                 goto err;
1412         }
1413         return 0;
1414 err:
1415         dev_warn(&adapter->pdev->dev,
1416                 "MSIX Request IRQ failed - err %d\n", status);
1417         pci_disable_msix(adapter->pdev);
1418         adapter->msix_enabled = false;
1419         return status;
1420 }
1421
1422 static int be_irq_register(struct be_adapter *adapter)
1423 {
1424         struct net_device *netdev = adapter->netdev;
1425         int status;
1426
1427         if (adapter->msix_enabled) {
1428                 status = be_msix_register(adapter);
1429                 if (status == 0)
1430                         goto done;
1431         }
1432
1433         /* INTx */
1434         netdev->irq = adapter->pdev->irq;
1435         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1436                         adapter);
1437         if (status) {
1438                 dev_err(&adapter->pdev->dev,
1439                         "INTx request IRQ failed - err %d\n", status);
1440                 return status;
1441         }
1442 done:
1443         adapter->isr_registered = true;
1444         return 0;
1445 }
1446
1447 static void be_irq_unregister(struct be_adapter *adapter)
1448 {
1449         struct net_device *netdev = adapter->netdev;
1450         int vec;
1451
1452         if (!adapter->isr_registered)
1453                 return;
1454
1455         /* INTx */
1456         if (!adapter->msix_enabled) {
1457                 free_irq(netdev->irq, adapter);
1458                 goto done;
1459         }
1460
1461         /* MSIx */
1462         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1463         free_irq(vec, adapter);
1464         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1465         free_irq(vec, adapter);
1466 done:
1467         adapter->isr_registered = false;
1468         return;
1469 }
1470
1471 static int be_open(struct net_device *netdev)
1472 {
1473         struct be_adapter *adapter = netdev_priv(netdev);
1474         struct be_ctrl_info *ctrl = &adapter->ctrl;
1475         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1476         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1477         u32 if_flags;
1478         int status;
1479
1480         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1481                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1482                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1483         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1484                         false/* pmac_invalid */, &adapter->if_handle,
1485                         &adapter->pmac_id);
1486         if (status != 0)
1487                 goto do_none;
1488
1489         be_vid_config(netdev);
1490
1491         status = be_cmd_set_flow_control(ctrl, true, true);
1492         if (status != 0)
1493                 goto if_destroy;
1494
1495         status = be_tx_queues_create(adapter);
1496         if (status != 0)
1497                 goto if_destroy;
1498
1499         status = be_rx_queues_create(adapter);
1500         if (status != 0)
1501                 goto tx_qs_destroy;
1502
1503         /* First time posting */
1504         be_post_rx_frags(adapter);
1505
1506         napi_enable(&rx_eq->napi);
1507         napi_enable(&tx_eq->napi);
1508
1509         be_irq_register(adapter);
1510
1511         be_intr_set(ctrl, true);
1512
1513         /* The evt queues are created in the unarmed state; arm them */
1514         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1515         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1516
1517         /* The compl queues are created in the unarmed state; arm them */
1518         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1519         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1520
1521         be_link_status_update(adapter);
1522
1523         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1524         return 0;
1525
1526 tx_qs_destroy:
1527         be_tx_queues_destroy(adapter);
1528 if_destroy:
1529         be_cmd_if_destroy(ctrl, adapter->if_handle);
1530 do_none:
1531         return status;
1532 }
1533
1534 static int be_close(struct net_device *netdev)
1535 {
1536         struct be_adapter *adapter = netdev_priv(netdev);
1537         struct be_ctrl_info *ctrl = &adapter->ctrl;
1538         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1539         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1540         int vec;
1541
1542         cancel_delayed_work(&adapter->work);
1543
1544         netif_stop_queue(netdev);
1545         netif_carrier_off(netdev);
1546         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1547
1548         be_intr_set(ctrl, false);
1549
1550         if (adapter->msix_enabled) {
1551                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1552                 synchronize_irq(vec);
1553                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1554                 synchronize_irq(vec);
1555         } else {
1556                 synchronize_irq(netdev->irq);
1557         }
1558         be_irq_unregister(adapter);
1559
1560         napi_disable(&rx_eq->napi);
1561         napi_disable(&tx_eq->napi);
1562
1563         be_rx_queues_destroy(adapter);
1564         be_tx_queues_destroy(adapter);
1565
1566         be_cmd_if_destroy(ctrl, adapter->if_handle);
1567         return 0;
1568 }
1569
1570 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1571                                 void **ip_hdr, void **tcpudp_hdr,
1572                                 u64 *hdr_flags, void *priv)
1573 {
1574         struct ethhdr *eh;
1575         struct vlan_ethhdr *veh;
1576         struct iphdr *iph;
1577         u8 *va = page_address(frag->page) + frag->page_offset;
1578         unsigned long ll_hlen;
1579
1580         prefetch(va);
1581         eh = (struct ethhdr *)va;
1582         *mac_hdr = eh;
1583         ll_hlen = ETH_HLEN;
1584         if (eh->h_proto != htons(ETH_P_IP)) {
1585                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1586                         veh = (struct vlan_ethhdr *)va;
1587                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1588                                 return -1;
1589
1590                         ll_hlen += VLAN_HLEN;
1591                 } else {
1592                         return -1;
1593                 }
1594         }
1595         *hdr_flags = LRO_IPV4;
1596         iph = (struct iphdr *)(va + ll_hlen);
1597         *ip_hdr = iph;
1598         if (iph->protocol != IPPROTO_TCP)
1599                 return -1;
1600         *hdr_flags |= LRO_TCP;
1601         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1602
1603         return 0;
1604 }
1605
1606 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1607 {
1608         struct net_lro_mgr *lro_mgr;
1609
1610         lro_mgr = &adapter->rx_obj.lro_mgr;
1611         lro_mgr->dev = netdev;
1612         lro_mgr->features = LRO_F_NAPI;
1613         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1614         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1615         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1616         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1617         lro_mgr->get_frag_header = be_get_frag_header;
1618         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1619 }
1620
1621 static struct net_device_ops be_netdev_ops = {
1622         .ndo_open               = be_open,
1623         .ndo_stop               = be_close,
1624         .ndo_start_xmit         = be_xmit,
1625         .ndo_get_stats          = be_get_stats,
1626         .ndo_set_rx_mode        = be_set_multicast_list,
1627         .ndo_set_mac_address    = be_mac_addr_set,
1628         .ndo_change_mtu         = be_change_mtu,
1629         .ndo_validate_addr      = eth_validate_addr,
1630         .ndo_vlan_rx_register   = be_vlan_register,
1631         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1632         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1633 };
1634
1635 static void be_netdev_init(struct net_device *netdev)
1636 {
1637         struct be_adapter *adapter = netdev_priv(netdev);
1638
1639         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1640                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1641                 NETIF_F_IPV6_CSUM;
1642
1643         netdev->flags |= IFF_MULTICAST;
1644
1645         adapter->rx_csum = true;
1646
1647         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1648
1649         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1650
1651         be_lro_init(adapter, netdev);
1652
1653         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1654                 BE_NAPI_WEIGHT);
1655         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1656                 BE_NAPI_WEIGHT);
1657
1658         netif_carrier_off(netdev);
1659         netif_stop_queue(netdev);
1660 }
1661
1662 static void be_unmap_pci_bars(struct be_adapter *adapter)
1663 {
1664         struct be_ctrl_info *ctrl = &adapter->ctrl;
1665         if (ctrl->csr)
1666                 iounmap(ctrl->csr);
1667         if (ctrl->db)
1668                 iounmap(ctrl->db);
1669         if (ctrl->pcicfg)
1670                 iounmap(ctrl->pcicfg);
1671 }
1672
1673 static int be_map_pci_bars(struct be_adapter *adapter)
1674 {
1675         u8 __iomem *addr;
1676
1677         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1678                         pci_resource_len(adapter->pdev, 2));
1679         if (addr == NULL)
1680                 return -ENOMEM;
1681         adapter->ctrl.csr = addr;
1682
1683         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1684                         128 * 1024);
1685         if (addr == NULL)
1686                 goto pci_map_err;
1687         adapter->ctrl.db = addr;
1688
1689         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1690                         pci_resource_len(adapter->pdev, 1));
1691         if (addr == NULL)
1692                 goto pci_map_err;
1693         adapter->ctrl.pcicfg = addr;
1694
1695         return 0;
1696 pci_map_err:
1697         be_unmap_pci_bars(adapter);
1698         return -ENOMEM;
1699 }
1700
1701
1702 static void be_ctrl_cleanup(struct be_adapter *adapter)
1703 {
1704         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1705
1706         be_unmap_pci_bars(adapter);
1707
1708         if (mem->va)
1709                 pci_free_consistent(adapter->pdev, mem->size,
1710                         mem->va, mem->dma);
1711 }
1712
1713 /* Initialize the mbox required to send cmds to BE */
1714 static int be_ctrl_init(struct be_adapter *adapter)
1715 {
1716         struct be_ctrl_info *ctrl = &adapter->ctrl;
1717         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1718         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1719         int status;
1720         u32 val;
1721
1722         status = be_map_pci_bars(adapter);
1723         if (status)
1724                 return status;
1725
1726         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1727         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1728                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1729         if (!mbox_mem_alloc->va) {
1730                 be_unmap_pci_bars(adapter);
1731                 return -1;
1732         }
1733         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1734         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1735         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1736         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1737         spin_lock_init(&ctrl->cmd_lock);
1738
1739         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1740         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1741                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1742         return 0;
1743 }
1744
1745 static void be_stats_cleanup(struct be_adapter *adapter)
1746 {
1747         struct be_stats_obj *stats = &adapter->stats;
1748         struct be_dma_mem *cmd = &stats->cmd;
1749
1750         if (cmd->va)
1751                 pci_free_consistent(adapter->pdev, cmd->size,
1752                         cmd->va, cmd->dma);
1753 }
1754
1755 static int be_stats_init(struct be_adapter *adapter)
1756 {
1757         struct be_stats_obj *stats = &adapter->stats;
1758         struct be_dma_mem *cmd = &stats->cmd;
1759
1760         cmd->size = sizeof(struct be_cmd_req_get_stats);
1761         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1762         if (cmd->va == NULL)
1763                 return -1;
1764         return 0;
1765 }
1766
1767 static void __devexit be_remove(struct pci_dev *pdev)
1768 {
1769         struct be_adapter *adapter = pci_get_drvdata(pdev);
1770         if (!adapter)
1771                 return;
1772
1773         unregister_netdev(adapter->netdev);
1774
1775         be_stats_cleanup(adapter);
1776
1777         be_ctrl_cleanup(adapter);
1778
1779         if (adapter->msix_enabled) {
1780                 pci_disable_msix(adapter->pdev);
1781                 adapter->msix_enabled = false;
1782         }
1783
1784         pci_set_drvdata(pdev, NULL);
1785         pci_release_regions(pdev);
1786         pci_disable_device(pdev);
1787
1788         free_netdev(adapter->netdev);
1789 }
1790
1791 static int be_hw_up(struct be_adapter *adapter)
1792 {
1793         struct be_ctrl_info *ctrl = &adapter->ctrl;
1794         int status;
1795
1796         status = be_cmd_POST(ctrl);
1797         if (status)
1798                 return status;
1799
1800         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1801         if (status)
1802                 return status;
1803
1804         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1805         return status;
1806 }
1807
1808 static int __devinit be_probe(struct pci_dev *pdev,
1809                         const struct pci_device_id *pdev_id)
1810 {
1811         int status = 0;
1812         struct be_adapter *adapter;
1813         struct net_device *netdev;
1814         struct be_ctrl_info *ctrl;
1815         u8 mac[ETH_ALEN];
1816
1817         status = pci_enable_device(pdev);
1818         if (status)
1819                 goto do_none;
1820
1821         status = pci_request_regions(pdev, DRV_NAME);
1822         if (status)
1823                 goto disable_dev;
1824         pci_set_master(pdev);
1825
1826         netdev = alloc_etherdev(sizeof(struct be_adapter));
1827         if (netdev == NULL) {
1828                 status = -ENOMEM;
1829                 goto rel_reg;
1830         }
1831         adapter = netdev_priv(netdev);
1832         adapter->pdev = pdev;
1833         pci_set_drvdata(pdev, adapter);
1834         adapter->netdev = netdev;
1835
1836         be_msix_enable(adapter);
1837
1838         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1839         if (!status) {
1840                 netdev->features |= NETIF_F_HIGHDMA;
1841         } else {
1842                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1843                 if (status) {
1844                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1845                         goto free_netdev;
1846                 }
1847         }
1848
1849         ctrl = &adapter->ctrl;
1850         status = be_ctrl_init(adapter);
1851         if (status)
1852                 goto free_netdev;
1853
1854         status = be_stats_init(adapter);
1855         if (status)
1856                 goto ctrl_clean;
1857
1858         status = be_hw_up(adapter);
1859         if (status)
1860                 goto stats_clean;
1861
1862         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1863                         true /* permanent */, 0);
1864         if (status)
1865                 goto stats_clean;
1866         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1867
1868         INIT_DELAYED_WORK(&adapter->work, be_worker);
1869         be_netdev_init(netdev);
1870         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1871
1872         status = register_netdev(netdev);
1873         if (status != 0)
1874                 goto stats_clean;
1875
1876         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1877         return 0;
1878
1879 stats_clean:
1880         be_stats_cleanup(adapter);
1881 ctrl_clean:
1882         be_ctrl_cleanup(adapter);
1883 free_netdev:
1884         free_netdev(adapter->netdev);
1885 rel_reg:
1886         pci_release_regions(pdev);
1887 disable_dev:
1888         pci_disable_device(pdev);
1889 do_none:
1890         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1891         return status;
1892 }
1893
1894 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1895 {
1896         struct be_adapter *adapter = pci_get_drvdata(pdev);
1897         struct net_device *netdev =  adapter->netdev;
1898
1899         netif_device_detach(netdev);
1900         if (netif_running(netdev)) {
1901                 rtnl_lock();
1902                 be_close(netdev);
1903                 rtnl_unlock();
1904         }
1905
1906         pci_save_state(pdev);
1907         pci_disable_device(pdev);
1908         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1909         return 0;
1910 }
1911
1912 static int be_resume(struct pci_dev *pdev)
1913 {
1914         int status = 0;
1915         struct be_adapter *adapter = pci_get_drvdata(pdev);
1916         struct net_device *netdev =  adapter->netdev;
1917
1918         netif_device_detach(netdev);
1919
1920         status = pci_enable_device(pdev);
1921         if (status)
1922                 return status;
1923
1924         pci_set_power_state(pdev, 0);
1925         pci_restore_state(pdev);
1926
1927         if (netif_running(netdev)) {
1928                 rtnl_lock();
1929                 be_open(netdev);
1930                 rtnl_unlock();
1931         }
1932         netif_device_attach(netdev);
1933         return 0;
1934 }
1935
1936 static struct pci_driver be_driver = {
1937         .name = DRV_NAME,
1938         .id_table = be_dev_ids,
1939         .probe = be_probe,
1940         .remove = be_remove,
1941         .suspend = be_suspend,
1942         .resume = be_resume
1943 };
1944
1945 static int __init be_init_module(void)
1946 {
1947         if (rx_frag_size != 8192 && rx_frag_size != 4096
1948                 && rx_frag_size != 2048) {
1949                 printk(KERN_WARNING DRV_NAME
1950                         " : Module param rx_frag_size must be 2048/4096/8192."
1951                         " Using 2048\n");
1952                 rx_frag_size = 2048;
1953         }
1954         /* Ensure rx_frag_size is aligned to chache line */
1955         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1956                 printk(KERN_WARNING DRV_NAME
1957                         " : Bad module param rx_frag_size. Using 2048\n");
1958                 rx_frag_size = 2048;
1959         }
1960
1961         return pci_register_driver(&be_driver);
1962 }
1963 module_init(be_init_module);
1964
1965 static void __exit be_exit_module(void)
1966 {
1967         pci_unregister_driver(&be_driver);
1968 }
1969 module_exit(be_exit_module);