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   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
  20 MODULE_VERSION(DRV_VER);
  21 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  22 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  23 MODULE_AUTHOR("ServerEngines Corporation");
  24 MODULE_LICENSE("GPL");
  25
  26 static unsigned int rx_frag_size = 2048;
  27 module_param(rx_frag_size, uint, S_IRUGO);
  28 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  29
  30 #define BE_VENDOR_ID            0x19a2
  31 #define BE2_DEVICE_ID_1         0x0211
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
  34         { 0 }
  35 };
  36 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  37
  38 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  39 {
  40         struct be_dma_mem *mem = &q->dma_mem;
  41         if (mem->va)
  42                 pci_free_consistent(adapter->pdev, mem->size,
  43                         mem->va, mem->dma);
  44 }
  45
  46 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  47                 u16 len, u16 entry_size)
  48 {
  49         struct be_dma_mem *mem = &q->dma_mem;
  50
  51         memset(q, 0, sizeof(*q));
  52         q->len = len;
  53         q->entry_size = entry_size;
  54         mem->size = len * entry_size;
  55         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  56         if (!mem->va)
  57                 return -1;
  58         memset(mem->va, 0, mem->size);
  59         return 0;
  60 }
  61
  62 static inline void *queue_head_node(struct be_queue_info *q)
  63 {
  64         return q->dma_mem.va + q->head * q->entry_size;
  65 }
  66
  67 static inline void *queue_tail_node(struct be_queue_info *q)
  68 {
  69         return q->dma_mem.va + q->tail * q->entry_size;
  70 }
  71
  72 static inline void queue_head_inc(struct be_queue_info *q)
  73 {
  74         index_inc(&q->head, q->len);
  75 }
  76
  77 static inline void queue_tail_inc(struct be_queue_info *q)
  78 {
  79         index_inc(&q->tail, q->len);
  80 }
  81
  82 static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
  83 {
  84         u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  85         u32 reg = ioread32(addr);
  86         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  87         if (!enabled && enable) {
  88                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  89         } else if (enabled && !enable) {
  90                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  91         } else {
  92                 printk(KERN_WARNING DRV_NAME
  93                         ": bad value in membar_int_ctrl reg=0x%x\n", reg);
  94                 return;
  95         }
  96         iowrite32(reg, addr);
  97 }
  98
  99 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 100 {
 101         u32 val = 0;
 102         val |= qid & DB_RQ_RING_ID_MASK;
 103         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
 104         iowrite32(val, ctrl->db + DB_RQ_OFFSET);
 105 }
 106
 107 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 108 {
 109         u32 val = 0;
 110         val |= qid & DB_TXULP_RING_ID_MASK;
 111         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 112         iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
 113 }
 114
 115 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
 116                 bool arm, bool clear_int, u16 num_popped)
 117 {
 118         u32 val = 0;
 119         val |= qid & DB_EQ_RING_ID_MASK;
 120         if (arm)
 121                 val |= 1 << DB_EQ_REARM_SHIFT;
 122         if (clear_int)
 123                 val |= 1 << DB_EQ_CLR_SHIFT;
 124         val |= 1 << DB_EQ_EVNT_SHIFT;
 125         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 126         iowrite32(val, ctrl->db + DB_EQ_OFFSET);
 127 }
 128
 129 static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
 130                 bool arm, u16 num_popped)
 131 {
 132         u32 val = 0;
 133         val |= qid & DB_CQ_RING_ID_MASK;
 134         if (arm)
 135                 val |= 1 << DB_CQ_REARM_SHIFT;
 136         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 137         iowrite32(val, ctrl->db + DB_CQ_OFFSET);
 138 }
 139
 140
 141 static int be_mac_addr_set(struct net_device *netdev, void *p)
 142 {
 143         struct be_adapter *adapter = netdev_priv(netdev);
 144         struct sockaddr *addr = p;
 145         int status = 0;
 146
 147         if (netif_running(netdev)) {
 148                 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
 149                                 adapter->pmac_id);
 150                 if (status)
 151                         return status;
 152
 153                 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
 154                                 adapter->if_handle, &adapter->pmac_id);
 155         }
 156
 157         if (!status)
 158                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 159
 160         return status;
 161 }
 162
 163 static void netdev_stats_update(struct be_adapter *adapter)
 164 {
 165         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 166         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 167         struct be_port_rxf_stats *port_stats =
 168                         &rxf_stats->port[adapter->port_num];
 169         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 170
 171         dev_stats->rx_packets = port_stats->rx_total_frames;
 172         dev_stats->tx_packets = port_stats->tx_unicastframes +
 173                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 174         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 175                                 (u64) port_stats->rx_bytes_lsd;
 176         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 177                                 (u64) port_stats->tx_bytes_lsd;
 178
 179         /* bad pkts received */
 180         dev_stats->rx_errors = port_stats->rx_crc_errors +
 181                 port_stats->rx_alignment_symbol_errors +
 182                 port_stats->rx_in_range_errors +
 183                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 184
 185         /*  packet transmit problems */
 186         dev_stats->tx_errors = 0;
 187
 188         /*  no space in linux buffers */
 189         dev_stats->rx_dropped = 0;
 190
 191         /* no space available in linux */
 192         dev_stats->tx_dropped = 0;
 193
 194         dev_stats->multicast = port_stats->tx_multicastframes;
 195         dev_stats->collisions = 0;
 196
 197         /* detailed rx errors */
 198         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 199                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 200         /* receive ring buffer overflow */
 201         dev_stats->rx_over_errors = 0;
 202         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 203
 204         /* frame alignment errors */
 205         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 206         /* receiver fifo overrun */
 207         /* drops_no_pbuf is no per i/f, it's per BE card */
 208         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 209                                         port_stats->rx_input_fifo_overflow +
 210                                         rxf_stats->rx_drops_no_pbuf;
 211         /* receiver missed packetd */
 212         dev_stats->rx_missed_errors = 0;
 213         /* detailed tx_errors */
 214         dev_stats->tx_aborted_errors = 0;
 215         dev_stats->tx_carrier_errors = 0;
 216         dev_stats->tx_fifo_errors = 0;
 217         dev_stats->tx_heartbeat_errors = 0;
 218         dev_stats->tx_window_errors = 0;
 219 }
 220
 221 static void be_link_status_update(struct be_adapter *adapter)
 222 {
 223         struct be_link_info *prev = &adapter->link;
 224         struct be_link_info now = { 0 };
 225         struct net_device *netdev = adapter->netdev;
 226
 227         be_cmd_link_status_query(&adapter->ctrl, &now);
 228
 229         /* If link came up or went down */
 230         if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
 231                         prev->speed == PHY_LINK_SPEED_ZERO)) {
 232                 if (now.speed == PHY_LINK_SPEED_ZERO) {
 233                         netif_stop_queue(netdev);
 234                         netif_carrier_off(netdev);
 235                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 236                 } else {
 237                         netif_start_queue(netdev);
 238                         netif_carrier_on(netdev);
 239                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 240                 }
 241         }
 242         *prev = now;
 243 }
 244
 245 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 246 static void be_rx_eqd_update(struct be_adapter *adapter)
 247 {
 248         u32 eqd;
 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
 253         /* Update once a second */
 254         if (((jiffies - stats->rx_fps_jiffies) < HZ) || rx_eq->enable_aic == 0)
 255                 return;
 256
 257         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 258                         ((jiffies - stats->rx_fps_jiffies) / HZ);
 259
 260         stats->rx_fps_jiffies = jiffies;
 261         stats->be_prev_rx_frags = stats->be_rx_frags;
 262         eqd = stats->be_rx_fps / 110000;
 263         eqd = eqd << 3;
 264         if (eqd > rx_eq->max_eqd)
 265                 eqd = rx_eq->max_eqd;
 266         if (eqd < rx_eq->min_eqd)
 267                 eqd = rx_eq->min_eqd;
 268         if (eqd < 10)
 269                 eqd = 0;
 270         if (eqd != rx_eq->cur_eqd)
 271                 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
 272
 273         rx_eq->cur_eqd = eqd;
 274 }
 275
 276 static struct net_device_stats *be_get_stats(struct net_device *dev)
 277 {
 278         struct be_adapter *adapter = netdev_priv(dev);
 279
 280         return &adapter->stats.net_stats;
 281 }
 282
 283 static void be_tx_stats_update(struct be_adapter *adapter,
 284                         u32 wrb_cnt, u32 copied, bool stopped)
 285 {
 286         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 287         stats->be_tx_reqs++;
 288         stats->be_tx_wrbs += wrb_cnt;
 289         stats->be_tx_bytes += copied;
 290         if (stopped)
 291                 stats->be_tx_stops++;
 292
 293         /* Update tx rate once in two seconds */
 294         if ((jiffies - stats->be_tx_jiffies) > 2 * HZ) {
 295                 u32 r;
 296                 r = (stats->be_tx_bytes - stats->be_tx_bytes_prev) /
 297                         ((u32) (jiffies - stats->be_tx_jiffies) / HZ);
 298                 r = (r / 1000000);                      /* M bytes/s */
 299                 stats->be_tx_rate = (r * 8);    /* M bits/s */
 300                 stats->be_tx_jiffies = jiffies;
 301                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 302         }
 303 }
 304
 305 /* Determine number of WRB entries needed to xmit data in an skb */
 306 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 307 {
 308         int cnt = 0;
 309         while (skb) {
 310                 if (skb->len > skb->data_len)
 311                         cnt++;
 312                 cnt += skb_shinfo(skb)->nr_frags;
 313                 skb = skb_shinfo(skb)->frag_list;
 314         }
 315         /* to account for hdr wrb */
 316         cnt++;
 317         if (cnt & 1) {
 318                 /* add a dummy to make it an even num */
 319                 cnt++;
 320                 *dummy = true;
 321         } else
 322                 *dummy = false;
 323         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 324         return cnt;
 325 }
 326
 327 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 328 {
 329         wrb->frag_pa_hi = upper_32_bits(addr);
 330         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 331         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 332 }
 333
 334 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 335                 bool vlan, u32 wrb_cnt, u32 len)
 336 {
 337         memset(hdr, 0, sizeof(*hdr));
 338
 339         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 340
 341         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 342                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 343                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 344                         hdr, skb_shinfo(skb)->gso_size);
 345         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 346                 if (is_tcp_pkt(skb))
 347                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 348                 else if (is_udp_pkt(skb))
 349                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 350         }
 351
 352         if (vlan && vlan_tx_tag_present(skb)) {
 353                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 354                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 355                         hdr, vlan_tx_tag_get(skb));
 356         }
 357
 358         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 359         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 360         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 361         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 362 }
 363
 364
 365 static int make_tx_wrbs(struct be_adapter *adapter,
 366                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 367 {
 368         u64 busaddr;
 369         u32 i, copied = 0;
 370         struct pci_dev *pdev = adapter->pdev;
 371         struct sk_buff *first_skb = skb;
 372         struct be_queue_info *txq = &adapter->tx_obj.q;
 373         struct be_eth_wrb *wrb;
 374         struct be_eth_hdr_wrb *hdr;
 375
 376         atomic_add(wrb_cnt, &txq->used);
 377         hdr = queue_head_node(txq);
 378         queue_head_inc(txq);
 379
 380         while (skb) {
 381                 if (skb->len > skb->data_len) {
 382                         int len = skb->len - skb->data_len;
 383                         busaddr = pci_map_single(pdev, skb->data, len,
 384                                         PCI_DMA_TODEVICE);
 385                         wrb = queue_head_node(txq);
 386                         wrb_fill(wrb, busaddr, len);
 387                         be_dws_cpu_to_le(wrb, sizeof(*wrb));
 388                         queue_head_inc(txq);
 389                         copied += len;
 390                 }
 391
 392                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 393                         struct skb_frag_struct *frag =
 394                                 &skb_shinfo(skb)->frags[i];
 395                         busaddr = pci_map_page(pdev, frag->page,
 396                                         frag->page_offset,
 397                                         frag->size, PCI_DMA_TODEVICE);
 398                         wrb = queue_head_node(txq);
 399                         wrb_fill(wrb, busaddr, frag->size);
 400                         be_dws_cpu_to_le(wrb, sizeof(*wrb));
 401                         queue_head_inc(txq);
 402                         copied += frag->size;
 403                 }
 404                 skb = skb_shinfo(skb)->frag_list;
 405         }
 406
 407         if (dummy_wrb) {
 408                 wrb = queue_head_node(txq);
 409                 wrb_fill(wrb, 0, 0);
 410                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 411                 queue_head_inc(txq);
 412         }
 413
 414         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 415                 wrb_cnt, copied);
 416         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 417
 418         return copied;
 419 }
 420
 421 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 422 {
 423         struct be_adapter *adapter = netdev_priv(netdev);
 424         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 425         struct be_queue_info *txq = &tx_obj->q;
 426         u32 wrb_cnt = 0, copied = 0;
 427         u32 start = txq->head;
 428         bool dummy_wrb, stopped = false;
 429
 430         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 431
 432         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 433
 434         /* record the sent skb in the sent_skb table */
 435         BUG_ON(tx_obj->sent_skb_list[start]);
 436         tx_obj->sent_skb_list[start] = skb;
 437
 438         /* Ensure that txq has space for the next skb; Else stop the queue
 439          * *BEFORE* ringing the tx doorbell, so that we serialze the
 440          * tx compls of the current transmit which'll wake up the queue
 441          */
 442         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 443                 netif_stop_queue(netdev);
 444                 stopped = true;
 445         }
 446
 447         be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
 448
 449         netdev->trans_start = jiffies;
 450
 451         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 452         return NETDEV_TX_OK;
 453 }
 454
 455 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 456 {
 457         struct be_adapter *adapter = netdev_priv(netdev);
 458         if (new_mtu < BE_MIN_MTU ||
 459                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 460                 dev_info(&adapter->pdev->dev,
 461                         "MTU must be between %d and %d bytes\n",
 462                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 463                 return -EINVAL;
 464         }
 465         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 466                         netdev->mtu, new_mtu);
 467         netdev->mtu = new_mtu;
 468         return 0;
 469 }
 470
 471 /*
 472  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 473  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 474  * set the BE in promiscuous VLAN mode.
 475  */
 476 static void be_vid_config(struct net_device *netdev)
 477 {
 478         struct be_adapter *adapter = netdev_priv(netdev);
 479         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 480         u16 ntags = 0, i;
 481
 482         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 483                 /* Construct VLAN Table to give to HW */
 484                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 485                         if (adapter->vlan_tag[i]) {
 486                                 vtag[ntags] = cpu_to_le16(i);
 487                                 ntags++;
 488                         }
 489                 }
 490                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 491                         vtag, ntags, 1, 0);
 492         } else {
 493                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 494                         NULL, 0, 1, 1);
 495         }
 496 }
 497
 498 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 499 {
 500         struct be_adapter *adapter = netdev_priv(netdev);
 501         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 502         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 503         struct be_ctrl_info *ctrl = &adapter->ctrl;
 504
 505         be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
 506         be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
 507         adapter->vlan_grp = grp;
 508         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
 509         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
 510 }
 511
 512 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 513 {
 514         struct be_adapter *adapter = netdev_priv(netdev);
 515
 516         adapter->num_vlans++;
 517         adapter->vlan_tag[vid] = 1;
 518
 519         be_vid_config(netdev);
 520 }
 521
 522 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 523 {
 524         struct be_adapter *adapter = netdev_priv(netdev);
 525
 526         adapter->num_vlans--;
 527         adapter->vlan_tag[vid] = 0;
 528
 529         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 530         be_vid_config(netdev);
 531 }
 532
 533 static void be_set_multicast_filter(struct net_device *netdev)
 534 {
 535         struct be_adapter *adapter = netdev_priv(netdev);
 536         struct dev_mc_list *mc_ptr;
 537         u8 mac_addr[32][ETH_ALEN];
 538         int i = 0;
 539
 540         if (netdev->flags & IFF_ALLMULTI) {
 541                 /* set BE in Multicast promiscuous */
 542                 be_cmd_mcast_mac_set(&adapter->ctrl,
 543                                         adapter->if_handle, NULL, 0, true);
 544                 return;
 545         }
 546
 547         for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
 548                 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
 549                 if (++i >= 32) {
 550                         be_cmd_mcast_mac_set(&adapter->ctrl,
 551                                 adapter->if_handle, &mac_addr[0][0], i, false);
 552                         i = 0;
 553                 }
 554
 555         }
 556
 557         if (i) {
 558                 /* reset the promiscuous mode also. */
 559                 be_cmd_mcast_mac_set(&adapter->ctrl,
 560                         adapter->if_handle, &mac_addr[0][0], i, false);
 561         }
 562 }
 563
 564 static void be_set_multicast_list(struct net_device *netdev)
 565 {
 566         struct be_adapter *adapter = netdev_priv(netdev);
 567
 568         if (netdev->flags & IFF_PROMISC) {
 569                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
 570         } else {
 571                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
 572                 be_set_multicast_filter(netdev);
 573         }
 574 }
 575
 576 static void be_rx_rate_update(struct be_adapter *adapter, u32 pktsize,
 577                         u16 numfrags)
 578 {
 579         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 580         u32 rate;
 581
 582         stats->be_rx_compl++;
 583         stats->be_rx_frags += numfrags;
 584         stats->be_rx_bytes += pktsize;
 585
 586         /* Update the rate once in two seconds */
 587         if ((jiffies - stats->be_rx_jiffies) < 2 * HZ)
 588                 return;
 589
 590         rate = (stats->be_rx_bytes - stats->be_rx_bytes_prev) /
 591                 ((u32) (jiffies - stats->be_rx_jiffies) / HZ);
 592         rate = (rate / 1000000);        /* MB/Sec */
 593         stats->be_rx_rate = (rate * 8);         /* Mega Bits/Sec */
 594         stats->be_rx_jiffies = jiffies;
 595         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 596 }
 597
 598 static struct be_rx_page_info *
 599 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 600 {
 601         struct be_rx_page_info *rx_page_info;
 602         struct be_queue_info *rxq = &adapter->rx_obj.q;
 603
 604         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 605         BUG_ON(!rx_page_info->page);
 606
 607         if (rx_page_info->last_page_user)
 608                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 609                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 610
 611         atomic_dec(&rxq->used);
 612         return rx_page_info;
 613 }
 614
 615 /* Throwaway the data in the Rx completion */
 616 static void be_rx_compl_discard(struct be_adapter *adapter,
 617                         struct be_eth_rx_compl *rxcp)
 618 {
 619         struct be_queue_info *rxq = &adapter->rx_obj.q;
 620         struct be_rx_page_info *page_info;
 621         u16 rxq_idx, i, num_rcvd;
 622
 623         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 624         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 625
 626         for (i = 0; i < num_rcvd; i++) {
 627                 page_info = get_rx_page_info(adapter, rxq_idx);
 628                 put_page(page_info->page);
 629                 memset(page_info, 0, sizeof(*page_info));
 630                 index_inc(&rxq_idx, rxq->len);
 631         }
 632 }
 633
 634 /*
 635  * skb_fill_rx_data forms a complete skb for an ether frame
 636  * indicated by rxcp.
 637  */
 638 static void skb_fill_rx_data(struct be_adapter *adapter,
 639                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 640 {
 641         struct be_queue_info *rxq = &adapter->rx_obj.q;
 642         struct be_rx_page_info *page_info;
 643         u16 rxq_idx, i, num_rcvd;
 644         u32 pktsize, hdr_len, curr_frag_len;
 645         u8 *start;
 646
 647         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 648         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 649         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 650
 651         page_info = get_rx_page_info(adapter, rxq_idx);
 652
 653         start = page_address(page_info->page) + page_info->page_offset;
 654         prefetch(start);
 655
 656         /* Copy data in the first descriptor of this completion */
 657         curr_frag_len = min(pktsize, rx_frag_size);
 658
 659         /* Copy the header portion into skb_data */
 660         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 661         memcpy(skb->data, start, hdr_len);
 662         skb->len = curr_frag_len;
 663         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 664                 /* Complete packet has now been moved to data */
 665                 put_page(page_info->page);
 666                 skb->data_len = 0;
 667                 skb->tail += curr_frag_len;
 668         } else {
 669                 skb_shinfo(skb)->nr_frags = 1;
 670                 skb_shinfo(skb)->frags[0].page = page_info->page;
 671                 skb_shinfo(skb)->frags[0].page_offset =
 672                                         page_info->page_offset + hdr_len;
 673                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 674                 skb->data_len = curr_frag_len - hdr_len;
 675                 skb->tail += hdr_len;
 676         }
 677         memset(page_info, 0, sizeof(*page_info));
 678
 679         if (pktsize <= rx_frag_size) {
 680                 BUG_ON(num_rcvd != 1);
 681                 return;
 682         }
 683
 684         /* More frags present for this completion */
 685         pktsize -= curr_frag_len; /* account for above copied frag */
 686         for (i = 1; i < num_rcvd; i++) {
 687                 index_inc(&rxq_idx, rxq->len);
 688                 page_info = get_rx_page_info(adapter, rxq_idx);
 689
 690                 curr_frag_len = min(pktsize, rx_frag_size);
 691
 692                 skb_shinfo(skb)->frags[i].page = page_info->page;
 693                 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
 694                 skb_shinfo(skb)->frags[i].size = curr_frag_len;
 695                 skb->len += curr_frag_len;
 696                 skb->data_len += curr_frag_len;
 697                 skb_shinfo(skb)->nr_frags++;
 698                 pktsize -= curr_frag_len;
 699
 700                 memset(page_info, 0, sizeof(*page_info));
 701         }
 702
 703         be_rx_rate_update(adapter, pktsize, num_rcvd);
 704         return;
 705 }
 706
 707 /* Process the RX completion indicated by rxcp when LRO is disabled */
 708 static void be_rx_compl_process(struct be_adapter *adapter,
 709                         struct be_eth_rx_compl *rxcp)
 710 {
 711         struct sk_buff *skb;
 712         u32 vtp, vid;
 713         int l4_cksm;
 714
 715         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 716         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 717
 718         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 719         if (!skb) {
 720                 if (net_ratelimit())
 721                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 722                 be_rx_compl_discard(adapter, rxcp);
 723                 return;
 724         }
 725
 726         skb_reserve(skb, NET_IP_ALIGN);
 727
 728         skb_fill_rx_data(adapter, skb, rxcp);
 729
 730         if (l4_cksm && adapter->rx_csum)
 731                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 732         else
 733                 skb->ip_summed = CHECKSUM_NONE;
 734
 735         skb->truesize = skb->len + sizeof(struct sk_buff);
 736         skb->protocol = eth_type_trans(skb, adapter->netdev);
 737         skb->dev = adapter->netdev;
 738
 739         if (vtp) {
 740                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 741                         kfree_skb(skb);
 742                         return;
 743                 }
 744                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 745                 vid = be16_to_cpu(vid);
 746                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 747         } else {
 748                 netif_receive_skb(skb);
 749         }
 750
 751         adapter->netdev->last_rx = jiffies;
 752
 753         return;
 754 }
 755
 756 /* Process the RX completion indicated by rxcp when LRO is enabled */
 757 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 758                         struct be_eth_rx_compl *rxcp)
 759 {
 760         struct be_rx_page_info *page_info;
 761         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 762         struct be_queue_info *rxq = &adapter->rx_obj.q;
 763         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 764         u16 i, rxq_idx = 0, vid;
 765
 766         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 767         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 768         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 769         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 770
 771         remaining = pkt_size;
 772         for (i = 0; i < num_rcvd; i++) {
 773                 page_info = get_rx_page_info(adapter, rxq_idx);
 774
 775                 curr_frag_len = min(remaining, rx_frag_size);
 776
 777                 rx_frags[i].page = page_info->page;
 778                 rx_frags[i].page_offset = page_info->page_offset;
 779                 rx_frags[i].size = curr_frag_len;
 780                 remaining -= curr_frag_len;
 781
 782                 index_inc(&rxq_idx, rxq->len);
 783
 784                 memset(page_info, 0, sizeof(*page_info));
 785         }
 786
 787         if (likely(!vlanf)) {
 788                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 789                                 pkt_size, NULL, 0);
 790         } else {
 791                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 792                 vid = be16_to_cpu(vid);
 793
 794                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 795                         return;
 796
 797                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 798                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 799                         vid, NULL, 0);
 800         }
 801
 802         be_rx_rate_update(adapter, pkt_size, num_rcvd);
 803         return;
 804 }
 805
 806 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 807 {
 808         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 809
 810         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 811                 return NULL;
 812
 813         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 814
 815         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 816
 817         queue_tail_inc(&adapter->rx_obj.cq);
 818         return rxcp;
 819 }
 820
 821 static inline struct page *be_alloc_pages(u32 size)
 822 {
 823         gfp_t alloc_flags = GFP_ATOMIC;
 824         u32 order = get_order(size);
 825         if (order > 0)
 826                 alloc_flags |= __GFP_COMP;
 827         return  alloc_pages(alloc_flags, order);
 828 }
 829
 830 /*
 831  * Allocate a page, split it to fragments of size rx_frag_size and post as
 832  * receive buffers to BE
 833  */
 834 static void be_post_rx_frags(struct be_adapter *adapter)
 835 {
 836         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 837         struct be_rx_page_info *page_info = NULL;
 838         struct be_queue_info *rxq = &adapter->rx_obj.q;
 839         struct page *pagep = NULL;
 840         struct be_eth_rx_d *rxd;
 841         u64 page_dmaaddr = 0, frag_dmaaddr;
 842         u32 posted, page_offset = 0;
 843
 844
 845         page_info = &page_info_tbl[rxq->head];
 846         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 847                 if (!pagep) {
 848                         pagep = be_alloc_pages(adapter->big_page_size);
 849                         if (unlikely(!pagep)) {
 850                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 851                                 break;
 852                         }
 853                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 854                                                 adapter->big_page_size,
 855                                                 PCI_DMA_FROMDEVICE);
 856                         page_info->page_offset = 0;
 857                 } else {
 858                         get_page(pagep);
 859                         page_info->page_offset = page_offset + rx_frag_size;
 860                 }
 861                 page_offset = page_info->page_offset;
 862                 page_info->page = pagep;
 863                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 864                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 865
 866                 rxd = queue_head_node(rxq);
 867                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 868                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 869                 queue_head_inc(rxq);
 870
 871                 /* Any space left in the current big page for another frag? */
 872                 if ((page_offset + rx_frag_size + rx_frag_size) >
 873                                         adapter->big_page_size) {
 874                         pagep = NULL;
 875                         page_info->last_page_user = true;
 876                 }
 877                 page_info = &page_info_tbl[rxq->head];
 878         }
 879         if (pagep)
 880                 page_info->last_page_user = true;
 881
 882         if (posted) {
 883                 atomic_add(posted, &rxq->used);
 884                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 885         } else if (atomic_read(&rxq->used) == 0) {
 886                 /* Let be_worker replenish when memory is available */
 887                 adapter->rx_post_starved = true;
 888         }
 889
 890         return;
 891 }
 892
 893 static struct be_eth_tx_compl *
 894 be_tx_compl_get(struct be_adapter *adapter)
 895 {
 896         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 897         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 898
 899         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 900                 return NULL;
 901
 902         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 903
 904         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 905
 906         queue_tail_inc(tx_cq);
 907         return txcp;
 908 }
 909
 910 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 911 {
 912         struct be_queue_info *txq = &adapter->tx_obj.q;
 913         struct be_eth_wrb *wrb;
 914         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 915         struct sk_buff *sent_skb;
 916         u64 busaddr;
 917         u16 cur_index, num_wrbs = 0;
 918
 919         cur_index = txq->tail;
 920         sent_skb = sent_skbs[cur_index];
 921         BUG_ON(!sent_skb);
 922         sent_skbs[cur_index] = NULL;
 923
 924         do {
 925                 cur_index = txq->tail;
 926                 wrb = queue_tail_node(txq);
 927                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 928                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 929                 if (busaddr != 0) {
 930                         pci_unmap_single(adapter->pdev, busaddr,
 931                                 wrb->frag_len, PCI_DMA_TODEVICE);
 932                 }
 933                 num_wrbs++;
 934                 queue_tail_inc(txq);
 935         } while (cur_index != last_index);
 936
 937         atomic_sub(num_wrbs, &txq->used);
 938
 939         kfree_skb(sent_skb);
 940 }
 941
 942 static void be_rx_q_clean(struct be_adapter *adapter)
 943 {
 944         struct be_rx_page_info *page_info;
 945         struct be_queue_info *rxq = &adapter->rx_obj.q;
 946         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
 947         struct be_eth_rx_compl *rxcp;
 948         u16 tail;
 949
 950         /* First cleanup pending rx completions */
 951         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
 952                 be_rx_compl_discard(adapter, rxcp);
 953                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
 954         }
 955
 956         /* Then free posted rx buffer that were not used */
 957         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
 958         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
 959                 page_info = get_rx_page_info(adapter, tail);
 960                 put_page(page_info->page);
 961                 memset(page_info, 0, sizeof(*page_info));
 962         }
 963         BUG_ON(atomic_read(&rxq->used));
 964 }
 965
 966 static void be_tx_q_clean(struct be_adapter *adapter)
 967 {
 968         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 969         struct sk_buff *sent_skb;
 970         struct be_queue_info *txq = &adapter->tx_obj.q;
 971         u16 last_index;
 972         bool dummy_wrb;
 973
 974         while (atomic_read(&txq->used)) {
 975                 sent_skb = sent_skbs[txq->tail];
 976                 last_index = txq->tail;
 977                 index_adv(&last_index,
 978                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
 979                 be_tx_compl_process(adapter, last_index);
 980         }
 981 }
 982
 983 static void be_tx_queues_destroy(struct be_adapter *adapter)
 984 {
 985         struct be_queue_info *q;
 986
 987         q = &adapter->tx_obj.q;
 988         if (q->created)
 989                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
 990         be_queue_free(adapter, q);
 991
 992         q = &adapter->tx_obj.cq;
 993         if (q->created)
 994                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
 995         be_queue_free(adapter, q);
 996
 997         /* No more tx completions can be rcvd now; clean up if there are
 998          * any pending completions or pending tx requests */
 999         be_tx_q_clean(adapter);
1000
1001         q = &adapter->tx_eq.q;
1002         if (q->created)
1003                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1004         be_queue_free(adapter, q);
1005 }
1006
1007 static int be_tx_queues_create(struct be_adapter *adapter)
1008 {
1009         struct be_queue_info *eq, *q, *cq;
1010
1011         adapter->tx_eq.max_eqd = 0;
1012         adapter->tx_eq.min_eqd = 0;
1013         adapter->tx_eq.cur_eqd = 96;
1014         adapter->tx_eq.enable_aic = false;
1015         /* Alloc Tx Event queue */
1016         eq = &adapter->tx_eq.q;
1017         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1018                 return -1;
1019
1020         /* Ask BE to create Tx Event queue */
1021         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1022                 goto tx_eq_free;
1023         /* Alloc TX eth compl queue */
1024         cq = &adapter->tx_obj.cq;
1025         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1026                         sizeof(struct be_eth_tx_compl)))
1027                 goto tx_eq_destroy;
1028
1029         /* Ask BE to create Tx eth compl queue */
1030         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1031                 goto tx_cq_free;
1032
1033         /* Alloc TX eth queue */
1034         q = &adapter->tx_obj.q;
1035         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1036                 goto tx_cq_destroy;
1037
1038         /* Ask BE to create Tx eth queue */
1039         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1040                 goto tx_q_free;
1041         return 0;
1042
1043 tx_q_free:
1044         be_queue_free(adapter, q);
1045 tx_cq_destroy:
1046         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1047 tx_cq_free:
1048         be_queue_free(adapter, cq);
1049 tx_eq_destroy:
1050         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1051 tx_eq_free:
1052         be_queue_free(adapter, eq);
1053         return -1;
1054 }
1055
1056 static void be_rx_queues_destroy(struct be_adapter *adapter)
1057 {
1058         struct be_queue_info *q;
1059
1060         q = &adapter->rx_obj.q;
1061         if (q->created) {
1062                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1063                 be_rx_q_clean(adapter);
1064         }
1065         be_queue_free(adapter, q);
1066
1067         q = &adapter->rx_obj.cq;
1068         if (q->created)
1069                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1070         be_queue_free(adapter, q);
1071
1072         q = &adapter->rx_eq.q;
1073         if (q->created)
1074                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1075         be_queue_free(adapter, q);
1076 }
1077
1078 static int be_rx_queues_create(struct be_adapter *adapter)
1079 {
1080         struct be_queue_info *eq, *q, *cq;
1081         int rc;
1082
1083         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1084         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1085         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1086         adapter->rx_eq.min_eqd = 0;
1087         adapter->rx_eq.cur_eqd = 0;
1088         adapter->rx_eq.enable_aic = true;
1089
1090         /* Alloc Rx Event queue */
1091         eq = &adapter->rx_eq.q;
1092         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1093                                 sizeof(struct be_eq_entry));
1094         if (rc)
1095                 return rc;
1096
1097         /* Ask BE to create Rx Event queue */
1098         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1099         if (rc)
1100                 goto rx_eq_free;
1101
1102         /* Alloc RX eth compl queue */
1103         cq = &adapter->rx_obj.cq;
1104         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1105                         sizeof(struct be_eth_rx_compl));
1106         if (rc)
1107                 goto rx_eq_destroy;
1108
1109         /* Ask BE to create Rx eth compl queue */
1110         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1111         if (rc)
1112                 goto rx_cq_free;
1113
1114         /* Alloc RX eth queue */
1115         q = &adapter->rx_obj.q;
1116         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1117         if (rc)
1118                 goto rx_cq_destroy;
1119
1120         /* Ask BE to create Rx eth queue */
1121         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1122                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1123         if (rc)
1124                 goto rx_q_free;
1125
1126         return 0;
1127 rx_q_free:
1128         be_queue_free(adapter, q);
1129 rx_cq_destroy:
1130         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1131 rx_cq_free:
1132         be_queue_free(adapter, cq);
1133 rx_eq_destroy:
1134         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1135 rx_eq_free:
1136         be_queue_free(adapter, eq);
1137         return rc;
1138 }
1139 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1140 {
1141         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1142         u32 evt = entry->evt;
1143
1144         if (!evt)
1145                 return false;
1146
1147         evt = le32_to_cpu(evt);
1148         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1149         entry->evt = 0;
1150         queue_tail_inc(&eq_obj->q);
1151         return true;
1152 }
1153
1154 static int event_handle(struct be_ctrl_info *ctrl,
1155                         struct be_eq_obj *eq_obj)
1156 {
1157         u16 rid = 0, num = 0;
1158
1159         while (event_get(eq_obj, &rid))
1160                 num++;
1161
1162         /* We can see an interrupt and no event */
1163         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1164         if (num)
1165                 napi_schedule(&eq_obj->napi);
1166
1167         return num;
1168 }
1169
1170 static irqreturn_t be_intx(int irq, void *dev)
1171 {
1172         struct be_adapter *adapter = dev;
1173         struct be_ctrl_info *ctrl = &adapter->ctrl;
1174         int rx, tx;
1175
1176         tx = event_handle(ctrl, &adapter->tx_eq);
1177         rx = event_handle(ctrl, &adapter->rx_eq);
1178
1179         if (rx || tx)
1180                 return IRQ_HANDLED;
1181         else
1182                 return IRQ_NONE;
1183 }
1184
1185 static irqreturn_t be_msix_rx(int irq, void *dev)
1186 {
1187         struct be_adapter *adapter = dev;
1188
1189         event_handle(&adapter->ctrl, &adapter->rx_eq);
1190
1191         return IRQ_HANDLED;
1192 }
1193
1194 static irqreturn_t be_msix_tx(int irq, void *dev)
1195 {
1196         struct be_adapter *adapter = dev;
1197
1198         event_handle(&adapter->ctrl, &adapter->tx_eq);
1199
1200         return IRQ_HANDLED;
1201 }
1202
1203 static inline bool do_lro(struct be_adapter *adapter,
1204                         struct be_eth_rx_compl *rxcp)
1205 {
1206         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1207         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1208
1209         if (err)
1210                 drvr_stats(adapter)->be_rxcp_err++;
1211
1212         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1213                 false : true;
1214 }
1215
1216 int be_poll_rx(struct napi_struct *napi, int budget)
1217 {
1218         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1219         struct be_adapter *adapter =
1220                 container_of(rx_eq, struct be_adapter, rx_eq);
1221         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1222         struct be_eth_rx_compl *rxcp;
1223         u32 work_done;
1224
1225         for (work_done = 0; work_done < budget; work_done++) {
1226                 rxcp = be_rx_compl_get(adapter);
1227                 if (!rxcp)
1228                         break;
1229
1230                 if (do_lro(adapter, rxcp))
1231                         be_rx_compl_process_lro(adapter, rxcp);
1232                 else
1233                         be_rx_compl_process(adapter, rxcp);
1234         }
1235
1236         lro_flush_all(&adapter->rx_obj.lro_mgr);
1237
1238         /* Refill the queue */
1239         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1240                 be_post_rx_frags(adapter);
1241
1242         /* All consumed */
1243         if (work_done < budget) {
1244                 napi_complete(napi);
1245                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1246         } else {
1247                 /* More to be consumed; continue with interrupts disabled */
1248                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1249         }
1250         return work_done;
1251 }
1252
1253 /* For TX we don't honour budget; consume everything */
1254 int be_poll_tx(struct napi_struct *napi, int budget)
1255 {
1256         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1257         struct be_adapter *adapter =
1258                 container_of(tx_eq, struct be_adapter, tx_eq);
1259         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1260         struct be_queue_info *tx_cq = &tx_obj->cq;
1261         struct be_queue_info *txq = &tx_obj->q;
1262         struct be_eth_tx_compl *txcp;
1263         u32 num_cmpl = 0;
1264         u16 end_idx;
1265
1266         while ((txcp = be_tx_compl_get(adapter))) {
1267                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1268                                         wrb_index, txcp);
1269                 be_tx_compl_process(adapter, end_idx);
1270                 num_cmpl++;
1271         }
1272
1273         /* As Tx wrbs have been freed up, wake up netdev queue if
1274          * it was stopped due to lack of tx wrbs.
1275          */
1276         if (netif_queue_stopped(adapter->netdev) &&
1277                         atomic_read(&txq->used) < txq->len / 2) {
1278                 netif_wake_queue(adapter->netdev);
1279         }
1280
1281         napi_complete(napi);
1282
1283         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1284
1285         drvr_stats(adapter)->be_tx_events++;
1286         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1287
1288         return 1;
1289 }
1290
1291 static void be_worker(struct work_struct *work)
1292 {
1293         struct be_adapter *adapter =
1294                 container_of(work, struct be_adapter, work.work);
1295         int status;
1296
1297         /* Check link */
1298         be_link_status_update(adapter);
1299
1300         /* Get Stats */
1301         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1302         if (!status)
1303                 netdev_stats_update(adapter);
1304
1305         /* Set EQ delay */
1306         be_rx_eqd_update(adapter);
1307
1308         if (adapter->rx_post_starved) {
1309                 adapter->rx_post_starved = false;
1310                 be_post_rx_frags(adapter);
1311         }
1312
1313         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1314 }
1315
1316 static void be_msix_enable(struct be_adapter *adapter)
1317 {
1318         int i, status;
1319
1320         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1321                 adapter->msix_entries[i].entry = i;
1322
1323         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1324                 BE_NUM_MSIX_VECTORS);
1325         if (status == 0)
1326                 adapter->msix_enabled = true;
1327         return;
1328 }
1329
1330 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1331 {
1332         return adapter->msix_entries[eq_id -
1333                         8 * adapter->ctrl.pci_func].vector;
1334 }
1335
1336 static int be_msix_register(struct be_adapter *adapter)
1337 {
1338         struct net_device *netdev = adapter->netdev;
1339         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1340         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1341         int status, vec;
1342
1343         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1344         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1345         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1346         if (status)
1347                 goto err;
1348
1349         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1350         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1351         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1352         if (status) { /* Free TX IRQ */
1353                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1354                 free_irq(vec, adapter);
1355                 goto err;
1356         }
1357         return 0;
1358 err:
1359         dev_warn(&adapter->pdev->dev,
1360                 "MSIX Request IRQ failed - err %d\n", status);
1361         pci_disable_msix(adapter->pdev);
1362         adapter->msix_enabled = false;
1363         return status;
1364 }
1365
1366 static int be_irq_register(struct be_adapter *adapter)
1367 {
1368         struct net_device *netdev = adapter->netdev;
1369         int status;
1370
1371         if (adapter->msix_enabled) {
1372                 status = be_msix_register(adapter);
1373                 if (status == 0)
1374                         goto done;
1375         }
1376
1377         /* INTx */
1378         netdev->irq = adapter->pdev->irq;
1379         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1380                         adapter);
1381         if (status) {
1382                 dev_err(&adapter->pdev->dev,
1383                         "INTx request IRQ failed - err %d\n", status);
1384                 return status;
1385         }
1386 done:
1387         adapter->isr_registered = true;
1388         return 0;
1389 }
1390
1391 static void be_irq_unregister(struct be_adapter *adapter)
1392 {
1393         struct net_device *netdev = adapter->netdev;
1394         int vec;
1395
1396         if (!adapter->isr_registered)
1397                 return;
1398
1399         /* INTx */
1400         if (!adapter->msix_enabled) {
1401                 free_irq(netdev->irq, adapter);
1402                 goto done;
1403         }
1404
1405         /* MSIx */
1406         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1407         free_irq(vec, adapter);
1408         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1409         free_irq(vec, adapter);
1410 done:
1411         adapter->isr_registered = false;
1412         return;
1413 }
1414
1415 static int be_open(struct net_device *netdev)
1416 {
1417         struct be_adapter *adapter = netdev_priv(netdev);
1418         struct be_ctrl_info *ctrl = &adapter->ctrl;
1419         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1420         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1421         u32 if_flags;
1422         int status;
1423
1424         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1425                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1426                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1427         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1428                         false/* pmac_invalid */, &adapter->if_handle,
1429                         &adapter->pmac_id);
1430         if (status != 0)
1431                 goto do_none;
1432
1433         be_vid_config(netdev);
1434
1435         status = be_cmd_set_flow_control(ctrl, true, true);
1436         if (status != 0)
1437                 goto if_destroy;
1438
1439         status = be_tx_queues_create(adapter);
1440         if (status != 0)
1441                 goto if_destroy;
1442
1443         status = be_rx_queues_create(adapter);
1444         if (status != 0)
1445                 goto tx_qs_destroy;
1446
1447         /* First time posting */
1448         be_post_rx_frags(adapter);
1449
1450         napi_enable(&rx_eq->napi);
1451         napi_enable(&tx_eq->napi);
1452
1453         be_irq_register(adapter);
1454
1455         be_intr_set(ctrl, true);
1456
1457         /* The evt queues are created in the unarmed state; arm them */
1458         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1459         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1460
1461         /* The compl queues are created in the unarmed state; arm them */
1462         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1463         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1464
1465         be_link_status_update(adapter);
1466
1467         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1468         return 0;
1469
1470 tx_qs_destroy:
1471         be_tx_queues_destroy(adapter);
1472 if_destroy:
1473         be_cmd_if_destroy(ctrl, adapter->if_handle);
1474 do_none:
1475         return status;
1476 }
1477
1478 static int be_close(struct net_device *netdev)
1479 {
1480         struct be_adapter *adapter = netdev_priv(netdev);
1481         struct be_ctrl_info *ctrl = &adapter->ctrl;
1482         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1483         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1484         int vec;
1485
1486         cancel_delayed_work(&adapter->work);
1487
1488         netif_stop_queue(netdev);
1489         netif_carrier_off(netdev);
1490         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1491
1492         be_intr_set(ctrl, false);
1493
1494         if (adapter->msix_enabled) {
1495                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1496                 synchronize_irq(vec);
1497                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1498                 synchronize_irq(vec);
1499         } else {
1500                 synchronize_irq(netdev->irq);
1501         }
1502         be_irq_unregister(adapter);
1503
1504         napi_disable(&rx_eq->napi);
1505         napi_disable(&tx_eq->napi);
1506
1507         be_rx_queues_destroy(adapter);
1508         be_tx_queues_destroy(adapter);
1509
1510         be_cmd_if_destroy(ctrl, adapter->if_handle);
1511         return 0;
1512 }
1513
1514 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1515                                 void **ip_hdr, void **tcpudp_hdr,
1516                                 u64 *hdr_flags, void *priv)
1517 {
1518         struct ethhdr *eh;
1519         struct vlan_ethhdr *veh;
1520         struct iphdr *iph;
1521         u8 *va = page_address(frag->page) + frag->page_offset;
1522         unsigned long ll_hlen;
1523
1524         prefetch(va);
1525         eh = (struct ethhdr *)va;
1526         *mac_hdr = eh;
1527         ll_hlen = ETH_HLEN;
1528         if (eh->h_proto != htons(ETH_P_IP)) {
1529                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1530                         veh = (struct vlan_ethhdr *)va;
1531                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1532                                 return -1;
1533
1534                         ll_hlen += VLAN_HLEN;
1535                 } else {
1536                         return -1;
1537                 }
1538         }
1539         *hdr_flags = LRO_IPV4;
1540         iph = (struct iphdr *)(va + ll_hlen);
1541         *ip_hdr = iph;
1542         if (iph->protocol != IPPROTO_TCP)
1543                 return -1;
1544         *hdr_flags |= LRO_TCP;
1545         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1546
1547         return 0;
1548 }
1549
1550 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1551 {
1552         struct net_lro_mgr *lro_mgr;
1553
1554         lro_mgr = &adapter->rx_obj.lro_mgr;
1555         lro_mgr->dev = netdev;
1556         lro_mgr->features = LRO_F_NAPI;
1557         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1558         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1559         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1560         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1561         lro_mgr->get_frag_header = be_get_frag_header;
1562         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1563 }
1564
1565 static struct net_device_ops be_netdev_ops = {
1566         .ndo_open               = be_open,
1567         .ndo_stop               = be_close,
1568         .ndo_start_xmit         = be_xmit,
1569         .ndo_get_stats          = be_get_stats,
1570         .ndo_set_rx_mode        = be_set_multicast_list,
1571         .ndo_set_mac_address    = be_mac_addr_set,
1572         .ndo_change_mtu         = be_change_mtu,
1573         .ndo_validate_addr      = eth_validate_addr,
1574         .ndo_vlan_rx_register   = be_vlan_register,
1575         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1576         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1577 };
1578
1579 static void be_netdev_init(struct net_device *netdev)
1580 {
1581         struct be_adapter *adapter = netdev_priv(netdev);
1582
1583         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1584                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1585                 NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1586
1587         netdev->flags |= IFF_MULTICAST;
1588
1589         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1590
1591         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1592
1593         be_lro_init(adapter, netdev);
1594
1595         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1596                 BE_NAPI_WEIGHT);
1597         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1598                 BE_NAPI_WEIGHT);
1599
1600         netif_carrier_off(netdev);
1601         netif_stop_queue(netdev);
1602 }
1603
1604 static void be_unmap_pci_bars(struct be_adapter *adapter)
1605 {
1606         struct be_ctrl_info *ctrl = &adapter->ctrl;
1607         if (ctrl->csr)
1608                 iounmap(ctrl->csr);
1609         if (ctrl->db)
1610                 iounmap(ctrl->db);
1611         if (ctrl->pcicfg)
1612                 iounmap(ctrl->pcicfg);
1613 }
1614
1615 static int be_map_pci_bars(struct be_adapter *adapter)
1616 {
1617         u8 __iomem *addr;
1618
1619         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1620                         pci_resource_len(adapter->pdev, 2));
1621         if (addr == NULL)
1622                 return -ENOMEM;
1623         adapter->ctrl.csr = addr;
1624
1625         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1626                         128 * 1024);
1627         if (addr == NULL)
1628                 goto pci_map_err;
1629         adapter->ctrl.db = addr;
1630
1631         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1632                         pci_resource_len(adapter->pdev, 1));
1633         if (addr == NULL)
1634                 goto pci_map_err;
1635         adapter->ctrl.pcicfg = addr;
1636
1637         return 0;
1638 pci_map_err:
1639         be_unmap_pci_bars(adapter);
1640         return -ENOMEM;
1641 }
1642
1643
1644 static void be_ctrl_cleanup(struct be_adapter *adapter)
1645 {
1646         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1647
1648         be_unmap_pci_bars(adapter);
1649
1650         if (mem->va)
1651                 pci_free_consistent(adapter->pdev, mem->size,
1652                         mem->va, mem->dma);
1653 }
1654
1655 /* Initialize the mbox required to send cmds to BE */
1656 static int be_ctrl_init(struct be_adapter *adapter)
1657 {
1658         struct be_ctrl_info *ctrl = &adapter->ctrl;
1659         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1660         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1661         int status;
1662         u32 val;
1663
1664         status = be_map_pci_bars(adapter);
1665         if (status)
1666                 return status;
1667
1668         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1669         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1670                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1671         if (!mbox_mem_alloc->va) {
1672                 be_unmap_pci_bars(adapter);
1673                 return -1;
1674         }
1675         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1676         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1677         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1678         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1679         spin_lock_init(&ctrl->cmd_lock);
1680
1681         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1682         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1683                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1684         return 0;
1685 }
1686
1687 static void be_stats_cleanup(struct be_adapter *adapter)
1688 {
1689         struct be_stats_obj *stats = &adapter->stats;
1690         struct be_dma_mem *cmd = &stats->cmd;
1691
1692         if (cmd->va)
1693                 pci_free_consistent(adapter->pdev, cmd->size,
1694                         cmd->va, cmd->dma);
1695 }
1696
1697 static int be_stats_init(struct be_adapter *adapter)
1698 {
1699         struct be_stats_obj *stats = &adapter->stats;
1700         struct be_dma_mem *cmd = &stats->cmd;
1701
1702         cmd->size = sizeof(struct be_cmd_req_get_stats);
1703         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1704         if (cmd->va == NULL)
1705                 return -1;
1706         return 0;
1707 }
1708
1709 static void __devexit be_remove(struct pci_dev *pdev)
1710 {
1711         struct be_adapter *adapter = pci_get_drvdata(pdev);
1712         if (!adapter)
1713                 return;
1714
1715         unregister_netdev(adapter->netdev);
1716
1717         be_stats_cleanup(adapter);
1718
1719         be_ctrl_cleanup(adapter);
1720
1721         if (adapter->msix_enabled) {
1722                 pci_disable_msix(adapter->pdev);
1723                 adapter->msix_enabled = false;
1724         }
1725
1726         pci_set_drvdata(pdev, NULL);
1727         pci_release_regions(pdev);
1728         pci_disable_device(pdev);
1729
1730         free_netdev(adapter->netdev);
1731 }
1732
1733 static int be_hw_up(struct be_adapter *adapter)
1734 {
1735         struct be_ctrl_info *ctrl = &adapter->ctrl;
1736         int status;
1737
1738         status = be_cmd_POST(ctrl);
1739         if (status)
1740                 return status;
1741
1742         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1743         if (status)
1744                 return status;
1745
1746         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1747         return status;
1748 }
1749
1750 static int __devinit be_probe(struct pci_dev *pdev,
1751                         const struct pci_device_id *pdev_id)
1752 {
1753         int status = 0;
1754         struct be_adapter *adapter;
1755         struct net_device *netdev;
1756         struct be_ctrl_info *ctrl;
1757         u8 mac[ETH_ALEN];
1758
1759         status = pci_enable_device(pdev);
1760         if (status)
1761                 goto do_none;
1762
1763         status = pci_request_regions(pdev, DRV_NAME);
1764         if (status)
1765                 goto disable_dev;
1766         pci_set_master(pdev);
1767
1768         netdev = alloc_etherdev(sizeof(struct be_adapter));
1769         if (netdev == NULL) {
1770                 status = -ENOMEM;
1771                 goto rel_reg;
1772         }
1773         adapter = netdev_priv(netdev);
1774         adapter->pdev = pdev;
1775         pci_set_drvdata(pdev, adapter);
1776         adapter->netdev = netdev;
1777
1778         be_msix_enable(adapter);
1779
1780         status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1781         if (!status) {
1782                 netdev->features |= NETIF_F_HIGHDMA;
1783         } else {
1784                 status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1785                 if (status) {
1786                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1787                         goto free_netdev;
1788                 }
1789         }
1790
1791         ctrl = &adapter->ctrl;
1792         status = be_ctrl_init(adapter);
1793         if (status)
1794                 goto free_netdev;
1795
1796         status = be_stats_init(adapter);
1797         if (status)
1798                 goto ctrl_clean;
1799
1800         status = be_hw_up(adapter);
1801         if (status)
1802                 goto stats_clean;
1803
1804         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1805                         true /* permanent */, 0);
1806         if (status)
1807                 goto stats_clean;
1808         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1809
1810         INIT_DELAYED_WORK(&adapter->work, be_worker);
1811         be_netdev_init(netdev);
1812         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1813
1814         status = register_netdev(netdev);
1815         if (status != 0)
1816                 goto stats_clean;
1817
1818         dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
1819         return 0;
1820
1821 stats_clean:
1822         be_stats_cleanup(adapter);
1823 ctrl_clean:
1824         be_ctrl_cleanup(adapter);
1825 free_netdev:
1826         free_netdev(adapter->netdev);
1827 rel_reg:
1828         pci_release_regions(pdev);
1829 disable_dev:
1830         pci_disable_device(pdev);
1831 do_none:
1832         dev_warn(&pdev->dev, BE_NAME " initialization failed\n");
1833         return status;
1834 }
1835
1836 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1837 {
1838         struct be_adapter *adapter = pci_get_drvdata(pdev);
1839         struct net_device *netdev =  adapter->netdev;
1840
1841         netif_device_detach(netdev);
1842         if (netif_running(netdev)) {
1843                 rtnl_lock();
1844                 be_close(netdev);
1845                 rtnl_unlock();
1846         }
1847
1848         pci_save_state(pdev);
1849         pci_disable_device(pdev);
1850         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1851         return 0;
1852 }
1853
1854 static int be_resume(struct pci_dev *pdev)
1855 {
1856         int status = 0;
1857         struct be_adapter *adapter = pci_get_drvdata(pdev);
1858         struct net_device *netdev =  adapter->netdev;
1859
1860         netif_device_detach(netdev);
1861
1862         status = pci_enable_device(pdev);
1863         if (status)
1864                 return status;
1865
1866         pci_set_power_state(pdev, 0);
1867         pci_restore_state(pdev);
1868
1869         if (netif_running(netdev)) {
1870                 rtnl_lock();
1871                 be_open(netdev);
1872                 rtnl_unlock();
1873         }
1874         netif_device_attach(netdev);
1875         return 0;
1876 }
1877
1878 static struct pci_driver be_driver = {
1879         .name = DRV_NAME,
1880         .id_table = be_dev_ids,
1881         .probe = be_probe,
1882         .remove = be_remove,
1883         .suspend = be_suspend,
1884         .resume = be_resume
1885 };
1886
1887 static int __init be_init_module(void)
1888 {
1889         if (rx_frag_size != 8192 && rx_frag_size != 4096
1890                 && rx_frag_size != 2048) {
1891                 printk(KERN_WARNING DRV_NAME
1892                         " : Module param rx_frag_size must be 2048/4096/8192."
1893                         " Using 2048\n");
1894                 rx_frag_size = 2048;
1895         }
1896         /* Ensure rx_frag_size is aligned to chache line */
1897         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1898                 printk(KERN_WARNING DRV_NAME
1899                         " : Bad module param rx_frag_size. Using 2048\n");
1900                 rx_frag_size = 2048;
1901         }
1902
1903         return pci_register_driver(&be_driver);
1904 }
1905 module_init(be_init_module);
1906
1907 static void __exit be_exit_module(void)
1908 {
1909         pci_unregister_driver(&be_driver);
1910 }
1911 module_exit(be_exit_module);