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 "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  36         { 0 }
  37 };
  38 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  39
  40 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  41 {
  42         struct be_dma_mem *mem = &q->dma_mem;
  43         if (mem->va)
  44                 pci_free_consistent(adapter->pdev, mem->size,
  45                         mem->va, mem->dma);
  46 }
  47
  48 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  49                 u16 len, u16 entry_size)
  50 {
  51         struct be_dma_mem *mem = &q->dma_mem;
  52
  53         memset(q, 0, sizeof(*q));
  54         q->len = len;
  55         q->entry_size = entry_size;
  56         mem->size = len * entry_size;
  57         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  58         if (!mem->va)
  59                 return -1;
  60         memset(mem->va, 0, mem->size);
  61         return 0;
  62 }
  63
  64 static void be_intr_set(struct be_adapter *adapter, bool enable)
  65 {
  66         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  67         u32 reg = ioread32(addr);
  68         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  69
  70         if (!enabled && enable)
  71                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  72         else if (enabled && !enable)
  73                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  74         else
  75                 return;
  76
  77         iowrite32(reg, addr);
  78 }
  79
  80 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  81 {
  82         u32 val = 0;
  83         val |= qid & DB_RQ_RING_ID_MASK;
  84         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  85         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  86 }
  87
  88 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  89 {
  90         u32 val = 0;
  91         val |= qid & DB_TXULP_RING_ID_MASK;
  92         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  93         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  94 }
  95
  96 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  97                 bool arm, bool clear_int, u16 num_popped)
  98 {
  99         u32 val = 0;
 100         val |= qid & DB_EQ_RING_ID_MASK;
 101         if (arm)
 102                 val |= 1 << DB_EQ_REARM_SHIFT;
 103         if (clear_int)
 104                 val |= 1 << DB_EQ_CLR_SHIFT;
 105         val |= 1 << DB_EQ_EVNT_SHIFT;
 106         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 107         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 108 }
 109
 110 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 111 {
 112         u32 val = 0;
 113         val |= qid & DB_CQ_RING_ID_MASK;
 114         if (arm)
 115                 val |= 1 << DB_CQ_REARM_SHIFT;
 116         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 117         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 118 }
 119
 120 static int be_mac_addr_set(struct net_device *netdev, void *p)
 121 {
 122         struct be_adapter *adapter = netdev_priv(netdev);
 123         struct sockaddr *addr = p;
 124         int status = 0;
 125
 126         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 127         if (status)
 128                 return status;
 129
 130         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 131                         adapter->if_handle, &adapter->pmac_id);
 132         if (!status)
 133                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 134
 135         return status;
 136 }
 137
 138 static void netdev_stats_update(struct be_adapter *adapter)
 139 {
 140         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 141         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 142         struct be_port_rxf_stats *port_stats =
 143                         &rxf_stats->port[adapter->port_num];
 144         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 145         struct be_erx_stats *erx_stats = &hw_stats->erx;
 146
 147         dev_stats->rx_packets = port_stats->rx_total_frames;
 148         dev_stats->tx_packets = port_stats->tx_unicastframes +
 149                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 150         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 151                                 (u64) port_stats->rx_bytes_lsd;
 152         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 153                                 (u64) port_stats->tx_bytes_lsd;
 154
 155         /* bad pkts received */
 156         dev_stats->rx_errors = port_stats->rx_crc_errors +
 157                 port_stats->rx_alignment_symbol_errors +
 158                 port_stats->rx_in_range_errors +
 159                 port_stats->rx_out_range_errors +
 160                 port_stats->rx_frame_too_long +
 161                 port_stats->rx_dropped_too_small +
 162                 port_stats->rx_dropped_too_short +
 163                 port_stats->rx_dropped_header_too_small +
 164                 port_stats->rx_dropped_tcp_length +
 165                 port_stats->rx_dropped_runt +
 166                 port_stats->rx_tcp_checksum_errs +
 167                 port_stats->rx_ip_checksum_errs +
 168                 port_stats->rx_udp_checksum_errs;
 169
 170         /*  no space in linux buffers: best possible approximation */
 171         dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
 172
 173         /* detailed rx errors */
 174         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 175                 port_stats->rx_out_range_errors +
 176                 port_stats->rx_frame_too_long;
 177
 178         /* receive ring buffer overflow */
 179         dev_stats->rx_over_errors = 0;
 180
 181         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 182
 183         /* frame alignment errors */
 184         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 185
 186         /* receiver fifo overrun */
 187         /* drops_no_pbuf is no per i/f, it's per BE card */
 188         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 189                                         port_stats->rx_input_fifo_overflow +
 190                                         rxf_stats->rx_drops_no_pbuf;
 191         /* receiver missed packetd */
 192         dev_stats->rx_missed_errors = 0;
 193
 194         /*  packet transmit problems */
 195         dev_stats->tx_errors = 0;
 196
 197         /* no space available in linux */
 198         dev_stats->tx_dropped = 0;
 199
 200         dev_stats->multicast = port_stats->tx_multicastframes;
 201         dev_stats->collisions = 0;
 202
 203         /* detailed tx_errors */
 204         dev_stats->tx_aborted_errors = 0;
 205         dev_stats->tx_carrier_errors = 0;
 206         dev_stats->tx_fifo_errors = 0;
 207         dev_stats->tx_heartbeat_errors = 0;
 208         dev_stats->tx_window_errors = 0;
 209 }
 210
 211 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 212 {
 213         struct net_device *netdev = adapter->netdev;
 214
 215         /* If link came up or went down */
 216         if (adapter->link_up != link_up) {
 217                 if (link_up) {
 218                         netif_start_queue(netdev);
 219                         netif_carrier_on(netdev);
 220                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 221                 } else {
 222                         netif_stop_queue(netdev);
 223                         netif_carrier_off(netdev);
 224                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 225                 }
 226                 adapter->link_up = link_up;
 227         }
 228 }
 229
 230 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 231 static void be_rx_eqd_update(struct be_adapter *adapter)
 232 {
 233         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 234         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 235         ulong now = jiffies;
 236         u32 eqd;
 237
 238         if (!rx_eq->enable_aic)
 239                 return;
 240
 241         /* Wrapped around */
 242         if (time_before(now, stats->rx_fps_jiffies)) {
 243                 stats->rx_fps_jiffies = now;
 244                 return;
 245         }
 246
 247         /* Update once a second */
 248         if ((now - stats->rx_fps_jiffies) < HZ)
 249                 return;
 250
 251         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 252                         ((now - stats->rx_fps_jiffies) / HZ);
 253
 254         stats->rx_fps_jiffies = now;
 255         stats->be_prev_rx_frags = stats->be_rx_frags;
 256         eqd = stats->be_rx_fps / 110000;
 257         eqd = eqd << 3;
 258         if (eqd > rx_eq->max_eqd)
 259                 eqd = rx_eq->max_eqd;
 260         if (eqd < rx_eq->min_eqd)
 261                 eqd = rx_eq->min_eqd;
 262         if (eqd < 10)
 263                 eqd = 0;
 264         if (eqd != rx_eq->cur_eqd)
 265                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 266
 267         rx_eq->cur_eqd = eqd;
 268 }
 269
 270 static struct net_device_stats *be_get_stats(struct net_device *dev)
 271 {
 272         struct be_adapter *adapter = netdev_priv(dev);
 273
 274         return &adapter->stats.net_stats;
 275 }
 276
 277 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 278 {
 279         u64 rate = bytes;
 280
 281         do_div(rate, ticks / HZ);
 282         rate <<= 3;                     /* bytes/sec -> bits/sec */
 283         do_div(rate, 1000000ul);        /* MB/Sec */
 284
 285         return rate;
 286 }
 287
 288 static void be_tx_rate_update(struct be_adapter *adapter)
 289 {
 290         struct be_drvr_stats *stats = drvr_stats(adapter);
 291         ulong now = jiffies;
 292
 293         /* Wrapped around? */
 294         if (time_before(now, stats->be_tx_jiffies)) {
 295                 stats->be_tx_jiffies = now;
 296                 return;
 297         }
 298
 299         /* Update tx rate once in two seconds */
 300         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 301                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 302                                                   - stats->be_tx_bytes_prev,
 303                                                  now - stats->be_tx_jiffies);
 304                 stats->be_tx_jiffies = now;
 305                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 306         }
 307 }
 308
 309 static void be_tx_stats_update(struct be_adapter *adapter,
 310                         u32 wrb_cnt, u32 copied, bool stopped)
 311 {
 312         struct be_drvr_stats *stats = drvr_stats(adapter);
 313         stats->be_tx_reqs++;
 314         stats->be_tx_wrbs += wrb_cnt;
 315         stats->be_tx_bytes += copied;
 316         if (stopped)
 317                 stats->be_tx_stops++;
 318 }
 319
 320 /* Determine number of WRB entries needed to xmit data in an skb */
 321 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 322 {
 323         int cnt = (skb->len > skb->data_len);
 324
 325         cnt += skb_shinfo(skb)->nr_frags;
 326
 327         /* to account for hdr wrb */
 328         cnt++;
 329         if (cnt & 1) {
 330                 /* add a dummy to make it an even num */
 331                 cnt++;
 332                 *dummy = true;
 333         } else
 334                 *dummy = false;
 335         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 336         return cnt;
 337 }
 338
 339 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 340 {
 341         wrb->frag_pa_hi = upper_32_bits(addr);
 342         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 343         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 344 }
 345
 346 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 347                 bool vlan, u32 wrb_cnt, u32 len)
 348 {
 349         memset(hdr, 0, sizeof(*hdr));
 350
 351         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 352
 353         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 354                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 355                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 356                         hdr, skb_shinfo(skb)->gso_size);
 357         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 358                 if (is_tcp_pkt(skb))
 359                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 360                 else if (is_udp_pkt(skb))
 361                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 362         }
 363
 364         if (vlan && vlan_tx_tag_present(skb)) {
 365                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 366                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 367                         hdr, vlan_tx_tag_get(skb));
 368         }
 369
 370         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 371         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 372         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 373         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 374 }
 375
 376
 377 static int make_tx_wrbs(struct be_adapter *adapter,
 378                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 379 {
 380         u64 busaddr;
 381         u32 i, copied = 0;
 382         struct pci_dev *pdev = adapter->pdev;
 383         struct sk_buff *first_skb = skb;
 384         struct be_queue_info *txq = &adapter->tx_obj.q;
 385         struct be_eth_wrb *wrb;
 386         struct be_eth_hdr_wrb *hdr;
 387
 388         atomic_add(wrb_cnt, &txq->used);
 389         hdr = queue_head_node(txq);
 390         queue_head_inc(txq);
 391
 392         if (skb->len > skb->data_len) {
 393                 int len = skb->len - skb->data_len;
 394                 busaddr = pci_map_single(pdev, skb->data, len,
 395                                          PCI_DMA_TODEVICE);
 396                 wrb = queue_head_node(txq);
 397                 wrb_fill(wrb, busaddr, len);
 398                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 399                 queue_head_inc(txq);
 400                 copied += len;
 401         }
 402
 403         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 404                 struct skb_frag_struct *frag =
 405                         &skb_shinfo(skb)->frags[i];
 406                 busaddr = pci_map_page(pdev, frag->page,
 407                                         frag->page_offset,
 408                                         frag->size, PCI_DMA_TODEVICE);
 409                 wrb = queue_head_node(txq);
 410                 wrb_fill(wrb, busaddr, frag->size);
 411                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 412                 queue_head_inc(txq);
 413                 copied += frag->size;
 414         }
 415
 416         if (dummy_wrb) {
 417                 wrb = queue_head_node(txq);
 418                 wrb_fill(wrb, 0, 0);
 419                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 420                 queue_head_inc(txq);
 421         }
 422
 423         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 424                 wrb_cnt, copied);
 425         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 426
 427         return copied;
 428 }
 429
 430 static netdev_tx_t be_xmit(struct sk_buff *skb,
 431                                  struct net_device *netdev)
 432 {
 433         struct be_adapter *adapter = netdev_priv(netdev);
 434         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 435         struct be_queue_info *txq = &tx_obj->q;
 436         u32 wrb_cnt = 0, copied = 0;
 437         u32 start = txq->head;
 438         bool dummy_wrb, stopped = false;
 439
 440         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 441
 442         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 443
 444         /* record the sent skb in the sent_skb table */
 445         BUG_ON(tx_obj->sent_skb_list[start]);
 446         tx_obj->sent_skb_list[start] = skb;
 447
 448         /* Ensure that txq has space for the next skb; Else stop the queue
 449          * *BEFORE* ringing the tx doorbell, so that we serialze the
 450          * tx compls of the current transmit which'll wake up the queue
 451          */
 452         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 453                 netif_stop_queue(netdev);
 454                 stopped = true;
 455         }
 456
 457         be_txq_notify(adapter, txq->id, wrb_cnt);
 458
 459         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 460         return NETDEV_TX_OK;
 461 }
 462
 463 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 464 {
 465         struct be_adapter *adapter = netdev_priv(netdev);
 466         if (new_mtu < BE_MIN_MTU ||
 467                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 468                 dev_info(&adapter->pdev->dev,
 469                         "MTU must be between %d and %d bytes\n",
 470                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 471                 return -EINVAL;
 472         }
 473         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 474                         netdev->mtu, new_mtu);
 475         netdev->mtu = new_mtu;
 476         return 0;
 477 }
 478
 479 /*
 480  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 481  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 482  * set the BE in promiscuous VLAN mode.
 483  */
 484 static void be_vid_config(struct net_device *netdev)
 485 {
 486         struct be_adapter *adapter = netdev_priv(netdev);
 487         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 488         u16 ntags = 0, i;
 489
 490         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 491                 /* Construct VLAN Table to give to HW */
 492                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 493                         if (adapter->vlan_tag[i]) {
 494                                 vtag[ntags] = cpu_to_le16(i);
 495                                 ntags++;
 496                         }
 497                 }
 498                 be_cmd_vlan_config(adapter, adapter->if_handle,
 499                         vtag, ntags, 1, 0);
 500         } else {
 501                 be_cmd_vlan_config(adapter, adapter->if_handle,
 502                         NULL, 0, 1, 1);
 503         }
 504 }
 505
 506 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 507 {
 508         struct be_adapter *adapter = netdev_priv(netdev);
 509         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 510         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 511
 512         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 513         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 514         adapter->vlan_grp = grp;
 515         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 516         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 517 }
 518
 519 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 520 {
 521         struct be_adapter *adapter = netdev_priv(netdev);
 522
 523         adapter->num_vlans++;
 524         adapter->vlan_tag[vid] = 1;
 525
 526         be_vid_config(netdev);
 527 }
 528
 529 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 530 {
 531         struct be_adapter *adapter = netdev_priv(netdev);
 532
 533         adapter->num_vlans--;
 534         adapter->vlan_tag[vid] = 0;
 535
 536         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 537         be_vid_config(netdev);
 538 }
 539
 540 static void be_set_multicast_list(struct net_device *netdev)
 541 {
 542         struct be_adapter *adapter = netdev_priv(netdev);
 543
 544         if (netdev->flags & IFF_PROMISC) {
 545                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 546                 adapter->promiscuous = true;
 547                 goto done;
 548         }
 549
 550         /* BE was previously in promiscous mode; disable it */
 551         if (adapter->promiscuous) {
 552                 adapter->promiscuous = false;
 553                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 554         }
 555
 556         if (netdev->flags & IFF_ALLMULTI) {
 557                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
 558                 goto done;
 559         }
 560
 561         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 562                 netdev->mc_count);
 563 done:
 564         return;
 565 }
 566
 567 static void be_rx_rate_update(struct be_adapter *adapter)
 568 {
 569         struct be_drvr_stats *stats = drvr_stats(adapter);
 570         ulong now = jiffies;
 571
 572         /* Wrapped around */
 573         if (time_before(now, stats->be_rx_jiffies)) {
 574                 stats->be_rx_jiffies = now;
 575                 return;
 576         }
 577
 578         /* Update the rate once in two seconds */
 579         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 580                 return;
 581
 582         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 583                                           - stats->be_rx_bytes_prev,
 584                                          now - stats->be_rx_jiffies);
 585         stats->be_rx_jiffies = now;
 586         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 587 }
 588
 589 static void be_rx_stats_update(struct be_adapter *adapter,
 590                 u32 pktsize, u16 numfrags)
 591 {
 592         struct be_drvr_stats *stats = drvr_stats(adapter);
 593
 594         stats->be_rx_compl++;
 595         stats->be_rx_frags += numfrags;
 596         stats->be_rx_bytes += pktsize;
 597 }
 598
 599 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 600 {
 601         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 602
 603         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 604         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 605         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 606         if (ip_version) {
 607                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 608                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 609         }
 610         ipv6_chk = (ip_version && (tcpf || udpf));
 611
 612         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 613 }
 614
 615 static struct be_rx_page_info *
 616 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 617 {
 618         struct be_rx_page_info *rx_page_info;
 619         struct be_queue_info *rxq = &adapter->rx_obj.q;
 620
 621         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 622         BUG_ON(!rx_page_info->page);
 623
 624         if (rx_page_info->last_page_user)
 625                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 626                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 627
 628         atomic_dec(&rxq->used);
 629         return rx_page_info;
 630 }
 631
 632 /* Throwaway the data in the Rx completion */
 633 static void be_rx_compl_discard(struct be_adapter *adapter,
 634                         struct be_eth_rx_compl *rxcp)
 635 {
 636         struct be_queue_info *rxq = &adapter->rx_obj.q;
 637         struct be_rx_page_info *page_info;
 638         u16 rxq_idx, i, num_rcvd;
 639
 640         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 641         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 642
 643         for (i = 0; i < num_rcvd; i++) {
 644                 page_info = get_rx_page_info(adapter, rxq_idx);
 645                 put_page(page_info->page);
 646                 memset(page_info, 0, sizeof(*page_info));
 647                 index_inc(&rxq_idx, rxq->len);
 648         }
 649 }
 650
 651 /*
 652  * skb_fill_rx_data forms a complete skb for an ether frame
 653  * indicated by rxcp.
 654  */
 655 static void skb_fill_rx_data(struct be_adapter *adapter,
 656                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 657 {
 658         struct be_queue_info *rxq = &adapter->rx_obj.q;
 659         struct be_rx_page_info *page_info;
 660         u16 rxq_idx, i, num_rcvd, j;
 661         u32 pktsize, hdr_len, curr_frag_len, size;
 662         u8 *start;
 663
 664         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 665         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 666         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 667
 668         page_info = get_rx_page_info(adapter, rxq_idx);
 669
 670         start = page_address(page_info->page) + page_info->page_offset;
 671         prefetch(start);
 672
 673         /* Copy data in the first descriptor of this completion */
 674         curr_frag_len = min(pktsize, rx_frag_size);
 675
 676         /* Copy the header portion into skb_data */
 677         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 678         memcpy(skb->data, start, hdr_len);
 679         skb->len = curr_frag_len;
 680         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 681                 /* Complete packet has now been moved to data */
 682                 put_page(page_info->page);
 683                 skb->data_len = 0;
 684                 skb->tail += curr_frag_len;
 685         } else {
 686                 skb_shinfo(skb)->nr_frags = 1;
 687                 skb_shinfo(skb)->frags[0].page = page_info->page;
 688                 skb_shinfo(skb)->frags[0].page_offset =
 689                                         page_info->page_offset + hdr_len;
 690                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 691                 skb->data_len = curr_frag_len - hdr_len;
 692                 skb->tail += hdr_len;
 693         }
 694         memset(page_info, 0, sizeof(*page_info));
 695
 696         if (pktsize <= rx_frag_size) {
 697                 BUG_ON(num_rcvd != 1);
 698                 goto done;
 699         }
 700
 701         /* More frags present for this completion */
 702         size = pktsize;
 703         for (i = 1, j = 0; i < num_rcvd; i++) {
 704                 size -= curr_frag_len;
 705                 index_inc(&rxq_idx, rxq->len);
 706                 page_info = get_rx_page_info(adapter, rxq_idx);
 707
 708                 curr_frag_len = min(size, rx_frag_size);
 709
 710                 /* Coalesce all frags from the same physical page in one slot */
 711                 if (page_info->page_offset == 0) {
 712                         /* Fresh page */
 713                         j++;
 714                         skb_shinfo(skb)->frags[j].page = page_info->page;
 715                         skb_shinfo(skb)->frags[j].page_offset =
 716                                                         page_info->page_offset;
 717                         skb_shinfo(skb)->frags[j].size = 0;
 718                         skb_shinfo(skb)->nr_frags++;
 719                 } else {
 720                         put_page(page_info->page);
 721                 }
 722
 723                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 724                 skb->len += curr_frag_len;
 725                 skb->data_len += curr_frag_len;
 726
 727                 memset(page_info, 0, sizeof(*page_info));
 728         }
 729         BUG_ON(j > MAX_SKB_FRAGS);
 730
 731 done:
 732         be_rx_stats_update(adapter, pktsize, num_rcvd);
 733         return;
 734 }
 735
 736 /* Process the RX completion indicated by rxcp when GRO is disabled */
 737 static void be_rx_compl_process(struct be_adapter *adapter,
 738                         struct be_eth_rx_compl *rxcp)
 739 {
 740         struct sk_buff *skb;
 741         u32 vtp, vid;
 742
 743         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 744
 745         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 746         if (!skb) {
 747                 if (net_ratelimit())
 748                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 749                 be_rx_compl_discard(adapter, rxcp);
 750                 return;
 751         }
 752
 753         skb_reserve(skb, NET_IP_ALIGN);
 754
 755         skb_fill_rx_data(adapter, skb, rxcp);
 756
 757         if (do_pkt_csum(rxcp, adapter->rx_csum))
 758                 skb->ip_summed = CHECKSUM_NONE;
 759         else
 760                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 761
 762         skb->truesize = skb->len + sizeof(struct sk_buff);
 763         skb->protocol = eth_type_trans(skb, adapter->netdev);
 764         skb->dev = adapter->netdev;
 765
 766         if (vtp) {
 767                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 768                         kfree_skb(skb);
 769                         return;
 770                 }
 771                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 772                 vid = be16_to_cpu(vid);
 773                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 774         } else {
 775                 netif_receive_skb(skb);
 776         }
 777
 778         adapter->netdev->last_rx = jiffies;
 779
 780         return;
 781 }
 782
 783 /* Process the RX completion indicated by rxcp when GRO is enabled */
 784 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 785                         struct be_eth_rx_compl *rxcp)
 786 {
 787         struct be_rx_page_info *page_info;
 788         struct sk_buff *skb = NULL;
 789         struct be_queue_info *rxq = &adapter->rx_obj.q;
 790         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 791         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 792         u16 i, rxq_idx = 0, vid, j;
 793
 794         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 795         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 796         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 797         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 798
 799         skb = napi_get_frags(&eq_obj->napi);
 800         if (!skb) {
 801                 be_rx_compl_discard(adapter, rxcp);
 802                 return;
 803         }
 804
 805         remaining = pkt_size;
 806         for (i = 0, j = -1; i < num_rcvd; i++) {
 807                 page_info = get_rx_page_info(adapter, rxq_idx);
 808
 809                 curr_frag_len = min(remaining, rx_frag_size);
 810
 811                 /* Coalesce all frags from the same physical page in one slot */
 812                 if (i == 0 || page_info->page_offset == 0) {
 813                         /* First frag or Fresh page */
 814                         j++;
 815                         skb_shinfo(skb)->frags[j].page = page_info->page;
 816                         skb_shinfo(skb)->frags[j].page_offset =
 817                                                         page_info->page_offset;
 818                         skb_shinfo(skb)->frags[j].size = 0;
 819                 } else {
 820                         put_page(page_info->page);
 821                 }
 822                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 823
 824                 remaining -= curr_frag_len;
 825                 index_inc(&rxq_idx, rxq->len);
 826                 memset(page_info, 0, sizeof(*page_info));
 827         }
 828         BUG_ON(j > MAX_SKB_FRAGS);
 829
 830         skb_shinfo(skb)->nr_frags = j + 1;
 831         skb->len = pkt_size;
 832         skb->data_len = pkt_size;
 833         skb->truesize += pkt_size;
 834         skb->ip_summed = CHECKSUM_UNNECESSARY;
 835
 836         if (likely(!vlanf)) {
 837                 napi_gro_frags(&eq_obj->napi);
 838         } else {
 839                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 840                 vid = be16_to_cpu(vid);
 841
 842                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 843                         return;
 844
 845                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 846         }
 847
 848         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 849         return;
 850 }
 851
 852 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 853 {
 854         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 855
 856         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 857                 return NULL;
 858
 859         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 860
 861         queue_tail_inc(&adapter->rx_obj.cq);
 862         return rxcp;
 863 }
 864
 865 /* To reset the valid bit, we need to reset the whole word as
 866  * when walking the queue the valid entries are little-endian
 867  * and invalid entries are host endian
 868  */
 869 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 870 {
 871         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 872 }
 873
 874 static inline struct page *be_alloc_pages(u32 size)
 875 {
 876         gfp_t alloc_flags = GFP_ATOMIC;
 877         u32 order = get_order(size);
 878         if (order > 0)
 879                 alloc_flags |= __GFP_COMP;
 880         return  alloc_pages(alloc_flags, order);
 881 }
 882
 883 /*
 884  * Allocate a page, split it to fragments of size rx_frag_size and post as
 885  * receive buffers to BE
 886  */
 887 static void be_post_rx_frags(struct be_adapter *adapter)
 888 {
 889         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 890         struct be_rx_page_info *page_info = NULL;
 891         struct be_queue_info *rxq = &adapter->rx_obj.q;
 892         struct page *pagep = NULL;
 893         struct be_eth_rx_d *rxd;
 894         u64 page_dmaaddr = 0, frag_dmaaddr;
 895         u32 posted, page_offset = 0;
 896
 897         page_info = &page_info_tbl[rxq->head];
 898         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 899                 if (!pagep) {
 900                         pagep = be_alloc_pages(adapter->big_page_size);
 901                         if (unlikely(!pagep)) {
 902                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 903                                 break;
 904                         }
 905                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 906                                                 adapter->big_page_size,
 907                                                 PCI_DMA_FROMDEVICE);
 908                         page_info->page_offset = 0;
 909                 } else {
 910                         get_page(pagep);
 911                         page_info->page_offset = page_offset + rx_frag_size;
 912                 }
 913                 page_offset = page_info->page_offset;
 914                 page_info->page = pagep;
 915                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 916                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 917
 918                 rxd = queue_head_node(rxq);
 919                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 920                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 921                 queue_head_inc(rxq);
 922
 923                 /* Any space left in the current big page for another frag? */
 924                 if ((page_offset + rx_frag_size + rx_frag_size) >
 925                                         adapter->big_page_size) {
 926                         pagep = NULL;
 927                         page_info->last_page_user = true;
 928                 }
 929                 page_info = &page_info_tbl[rxq->head];
 930         }
 931         if (pagep)
 932                 page_info->last_page_user = true;
 933
 934         if (posted) {
 935                 atomic_add(posted, &rxq->used);
 936                 be_rxq_notify(adapter, rxq->id, posted);
 937         } else if (atomic_read(&rxq->used) == 0) {
 938                 /* Let be_worker replenish when memory is available */
 939                 adapter->rx_post_starved = true;
 940         }
 941
 942         return;
 943 }
 944
 945 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 946 {
 947         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 948
 949         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 950                 return NULL;
 951
 952         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 953
 954         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 955
 956         queue_tail_inc(tx_cq);
 957         return txcp;
 958 }
 959
 960 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 961 {
 962         struct be_queue_info *txq = &adapter->tx_obj.q;
 963         struct be_eth_wrb *wrb;
 964         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 965         struct sk_buff *sent_skb;
 966         u64 busaddr;
 967         u16 cur_index, num_wrbs = 0;
 968
 969         cur_index = txq->tail;
 970         sent_skb = sent_skbs[cur_index];
 971         BUG_ON(!sent_skb);
 972         sent_skbs[cur_index] = NULL;
 973
 974         do {
 975                 cur_index = txq->tail;
 976                 wrb = queue_tail_node(txq);
 977                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 978                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 979                 if (busaddr != 0) {
 980                         pci_unmap_single(adapter->pdev, busaddr,
 981                                 wrb->frag_len, PCI_DMA_TODEVICE);
 982                 }
 983                 num_wrbs++;
 984                 queue_tail_inc(txq);
 985         } while (cur_index != last_index);
 986
 987         atomic_sub(num_wrbs, &txq->used);
 988
 989         kfree_skb(sent_skb);
 990 }
 991
 992 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
 993 {
 994         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
 995
 996         if (!eqe->evt)
 997                 return NULL;
 998
 999         eqe->evt = le32_to_cpu(eqe->evt);
1000         queue_tail_inc(&eq_obj->q);
1001         return eqe;
1002 }
1003
1004 static int event_handle(struct be_adapter *adapter,
1005                         struct be_eq_obj *eq_obj)
1006 {
1007         struct be_eq_entry *eqe;
1008         u16 num = 0;
1009
1010         while ((eqe = event_get(eq_obj)) != NULL) {
1011                 eqe->evt = 0;
1012                 num++;
1013         }
1014
1015         /* Deal with any spurious interrupts that come
1016          * without events
1017          */
1018         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1019         if (num)
1020                 napi_schedule(&eq_obj->napi);
1021
1022         return num;
1023 }
1024
1025 /* Just read and notify events without processing them.
1026  * Used at the time of destroying event queues */
1027 static void be_eq_clean(struct be_adapter *adapter,
1028                         struct be_eq_obj *eq_obj)
1029 {
1030         struct be_eq_entry *eqe;
1031         u16 num = 0;
1032
1033         while ((eqe = event_get(eq_obj)) != NULL) {
1034                 eqe->evt = 0;
1035                 num++;
1036         }
1037
1038         if (num)
1039                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1040 }
1041
1042 static void be_rx_q_clean(struct be_adapter *adapter)
1043 {
1044         struct be_rx_page_info *page_info;
1045         struct be_queue_info *rxq = &adapter->rx_obj.q;
1046         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1047         struct be_eth_rx_compl *rxcp;
1048         u16 tail;
1049
1050         /* First cleanup pending rx completions */
1051         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1052                 be_rx_compl_discard(adapter, rxcp);
1053                 be_rx_compl_reset(rxcp);
1054                 be_cq_notify(adapter, rx_cq->id, true, 1);
1055         }
1056
1057         /* Then free posted rx buffer that were not used */
1058         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1059         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1060                 page_info = get_rx_page_info(adapter, tail);
1061                 put_page(page_info->page);
1062                 memset(page_info, 0, sizeof(*page_info));
1063         }
1064         BUG_ON(atomic_read(&rxq->used));
1065 }
1066
1067 static void be_tx_compl_clean(struct be_adapter *adapter)
1068 {
1069         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1070         struct be_queue_info *txq = &adapter->tx_obj.q;
1071         struct be_eth_tx_compl *txcp;
1072         u16 end_idx, cmpl = 0, timeo = 0;
1073
1074         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1075         do {
1076                 while ((txcp = be_tx_compl_get(tx_cq))) {
1077                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1078                                         wrb_index, txcp);
1079                         be_tx_compl_process(adapter, end_idx);
1080                         cmpl++;
1081                 }
1082                 if (cmpl) {
1083                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1084                         cmpl = 0;
1085                 }
1086
1087                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1088                         break;
1089
1090                 mdelay(1);
1091         } while (true);
1092
1093         if (atomic_read(&txq->used))
1094                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1095                         atomic_read(&txq->used));
1096 }
1097
1098 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1099 {
1100         struct be_queue_info *q;
1101
1102         q = &adapter->mcc_obj.q;
1103         if (q->created)
1104                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1105         be_queue_free(adapter, q);
1106
1107         q = &adapter->mcc_obj.cq;
1108         if (q->created)
1109                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1110         be_queue_free(adapter, q);
1111 }
1112
1113 /* Must be called only after TX qs are created as MCC shares TX EQ */
1114 static int be_mcc_queues_create(struct be_adapter *adapter)
1115 {
1116         struct be_queue_info *q, *cq;
1117
1118         /* Alloc MCC compl queue */
1119         cq = &adapter->mcc_obj.cq;
1120         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1121                         sizeof(struct be_mcc_compl)))
1122                 goto err;
1123
1124         /* Ask BE to create MCC compl queue; share TX's eq */
1125         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1126                 goto mcc_cq_free;
1127
1128         /* Alloc MCC queue */
1129         q = &adapter->mcc_obj.q;
1130         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1131                 goto mcc_cq_destroy;
1132
1133         /* Ask BE to create MCC queue */
1134         if (be_cmd_mccq_create(adapter, q, cq))
1135                 goto mcc_q_free;
1136
1137         return 0;
1138
1139 mcc_q_free:
1140         be_queue_free(adapter, q);
1141 mcc_cq_destroy:
1142         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1143 mcc_cq_free:
1144         be_queue_free(adapter, cq);
1145 err:
1146         return -1;
1147 }
1148
1149 static void be_tx_queues_destroy(struct be_adapter *adapter)
1150 {
1151         struct be_queue_info *q;
1152
1153         q = &adapter->tx_obj.q;
1154         if (q->created)
1155                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1156         be_queue_free(adapter, q);
1157
1158         q = &adapter->tx_obj.cq;
1159         if (q->created)
1160                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1161         be_queue_free(adapter, q);
1162
1163         /* Clear any residual events */
1164         be_eq_clean(adapter, &adapter->tx_eq);
1165
1166         q = &adapter->tx_eq.q;
1167         if (q->created)
1168                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1169         be_queue_free(adapter, q);
1170 }
1171
1172 static int be_tx_queues_create(struct be_adapter *adapter)
1173 {
1174         struct be_queue_info *eq, *q, *cq;
1175
1176         adapter->tx_eq.max_eqd = 0;
1177         adapter->tx_eq.min_eqd = 0;
1178         adapter->tx_eq.cur_eqd = 96;
1179         adapter->tx_eq.enable_aic = false;
1180         /* Alloc Tx Event queue */
1181         eq = &adapter->tx_eq.q;
1182         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1183                 return -1;
1184
1185         /* Ask BE to create Tx Event queue */
1186         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1187                 goto tx_eq_free;
1188         /* Alloc TX eth compl queue */
1189         cq = &adapter->tx_obj.cq;
1190         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1191                         sizeof(struct be_eth_tx_compl)))
1192                 goto tx_eq_destroy;
1193
1194         /* Ask BE to create Tx eth compl queue */
1195         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1196                 goto tx_cq_free;
1197
1198         /* Alloc TX eth queue */
1199         q = &adapter->tx_obj.q;
1200         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1201                 goto tx_cq_destroy;
1202
1203         /* Ask BE to create Tx eth queue */
1204         if (be_cmd_txq_create(adapter, q, cq))
1205                 goto tx_q_free;
1206         return 0;
1207
1208 tx_q_free:
1209         be_queue_free(adapter, q);
1210 tx_cq_destroy:
1211         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1212 tx_cq_free:
1213         be_queue_free(adapter, cq);
1214 tx_eq_destroy:
1215         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1216 tx_eq_free:
1217         be_queue_free(adapter, eq);
1218         return -1;
1219 }
1220
1221 static void be_rx_queues_destroy(struct be_adapter *adapter)
1222 {
1223         struct be_queue_info *q;
1224
1225         q = &adapter->rx_obj.q;
1226         if (q->created) {
1227                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1228                 be_rx_q_clean(adapter);
1229         }
1230         be_queue_free(adapter, q);
1231
1232         q = &adapter->rx_obj.cq;
1233         if (q->created)
1234                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1235         be_queue_free(adapter, q);
1236
1237         /* Clear any residual events */
1238         be_eq_clean(adapter, &adapter->rx_eq);
1239
1240         q = &adapter->rx_eq.q;
1241         if (q->created)
1242                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1243         be_queue_free(adapter, q);
1244 }
1245
1246 static int be_rx_queues_create(struct be_adapter *adapter)
1247 {
1248         struct be_queue_info *eq, *q, *cq;
1249         int rc;
1250
1251         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1252         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1253         adapter->rx_eq.min_eqd = 0;
1254         adapter->rx_eq.cur_eqd = 0;
1255         adapter->rx_eq.enable_aic = true;
1256
1257         /* Alloc Rx Event queue */
1258         eq = &adapter->rx_eq.q;
1259         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1260                                 sizeof(struct be_eq_entry));
1261         if (rc)
1262                 return rc;
1263
1264         /* Ask BE to create Rx Event queue */
1265         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1266         if (rc)
1267                 goto rx_eq_free;
1268
1269         /* Alloc RX eth compl queue */
1270         cq = &adapter->rx_obj.cq;
1271         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1272                         sizeof(struct be_eth_rx_compl));
1273         if (rc)
1274                 goto rx_eq_destroy;
1275
1276         /* Ask BE to create Rx eth compl queue */
1277         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1278         if (rc)
1279                 goto rx_cq_free;
1280
1281         /* Alloc RX eth queue */
1282         q = &adapter->rx_obj.q;
1283         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1284         if (rc)
1285                 goto rx_cq_destroy;
1286
1287         /* Ask BE to create Rx eth queue */
1288         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1289                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1290         if (rc)
1291                 goto rx_q_free;
1292
1293         return 0;
1294 rx_q_free:
1295         be_queue_free(adapter, q);
1296 rx_cq_destroy:
1297         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1298 rx_cq_free:
1299         be_queue_free(adapter, cq);
1300 rx_eq_destroy:
1301         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1302 rx_eq_free:
1303         be_queue_free(adapter, eq);
1304         return rc;
1305 }
1306
1307 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1308 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1309 {
1310         return eq_id - 8 * be_pci_func(adapter);
1311 }
1312
1313 static irqreturn_t be_intx(int irq, void *dev)
1314 {
1315         struct be_adapter *adapter = dev;
1316         int isr;
1317
1318         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1319                         be_pci_func(adapter) * CEV_ISR_SIZE);
1320         if (!isr)
1321                 return IRQ_NONE;
1322
1323         event_handle(adapter, &adapter->tx_eq);
1324         event_handle(adapter, &adapter->rx_eq);
1325
1326         return IRQ_HANDLED;
1327 }
1328
1329 static irqreturn_t be_msix_rx(int irq, void *dev)
1330 {
1331         struct be_adapter *adapter = dev;
1332
1333         event_handle(adapter, &adapter->rx_eq);
1334
1335         return IRQ_HANDLED;
1336 }
1337
1338 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1339 {
1340         struct be_adapter *adapter = dev;
1341
1342         event_handle(adapter, &adapter->tx_eq);
1343
1344         return IRQ_HANDLED;
1345 }
1346
1347 static inline bool do_gro(struct be_adapter *adapter,
1348                         struct be_eth_rx_compl *rxcp)
1349 {
1350         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1351         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1352
1353         if (err)
1354                 drvr_stats(adapter)->be_rxcp_err++;
1355
1356         return (tcp_frame && !err) ? true : false;
1357 }
1358
1359 int be_poll_rx(struct napi_struct *napi, int budget)
1360 {
1361         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1362         struct be_adapter *adapter =
1363                 container_of(rx_eq, struct be_adapter, rx_eq);
1364         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1365         struct be_eth_rx_compl *rxcp;
1366         u32 work_done;
1367
1368         for (work_done = 0; work_done < budget; work_done++) {
1369                 rxcp = be_rx_compl_get(adapter);
1370                 if (!rxcp)
1371                         break;
1372
1373                 if (do_gro(adapter, rxcp))
1374                         be_rx_compl_process_gro(adapter, rxcp);
1375                 else
1376                         be_rx_compl_process(adapter, rxcp);
1377
1378                 be_rx_compl_reset(rxcp);
1379         }
1380
1381         /* Refill the queue */
1382         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1383                 be_post_rx_frags(adapter);
1384
1385         /* All consumed */
1386         if (work_done < budget) {
1387                 napi_complete(napi);
1388                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1389         } else {
1390                 /* More to be consumed; continue with interrupts disabled */
1391                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1392         }
1393         return work_done;
1394 }
1395
1396 void be_process_tx(struct be_adapter *adapter)
1397 {
1398         struct be_queue_info *txq = &adapter->tx_obj.q;
1399         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1400         struct be_eth_tx_compl *txcp;
1401         u32 num_cmpl = 0;
1402         u16 end_idx;
1403
1404         while ((txcp = be_tx_compl_get(tx_cq))) {
1405                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1406                                         wrb_index, txcp);
1407                 be_tx_compl_process(adapter, end_idx);
1408                 num_cmpl++;
1409         }
1410
1411         if (num_cmpl) {
1412                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1413
1414                 /* As Tx wrbs have been freed up, wake up netdev queue if
1415                  * it was stopped due to lack of tx wrbs.
1416                  */
1417                 if (netif_queue_stopped(adapter->netdev) &&
1418                         atomic_read(&txq->used) < txq->len / 2) {
1419                         netif_wake_queue(adapter->netdev);
1420                 }
1421
1422                 drvr_stats(adapter)->be_tx_events++;
1423                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1424         }
1425 }
1426
1427 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1428  * For TX/MCC we don't honour budget; consume everything
1429  */
1430 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1431 {
1432         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1433         struct be_adapter *adapter =
1434                 container_of(tx_eq, struct be_adapter, tx_eq);
1435
1436         napi_complete(napi);
1437
1438         be_process_tx(adapter);
1439
1440         be_process_mcc(adapter);
1441
1442         return 1;
1443 }
1444
1445 static void be_worker(struct work_struct *work)
1446 {
1447         struct be_adapter *adapter =
1448                 container_of(work, struct be_adapter, work.work);
1449         int status;
1450
1451         /* Get Stats */
1452         status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
1453         if (!status)
1454                 netdev_stats_update(adapter);
1455
1456         /* Set EQ delay */
1457         be_rx_eqd_update(adapter);
1458
1459         be_tx_rate_update(adapter);
1460         be_rx_rate_update(adapter);
1461
1462         if (adapter->rx_post_starved) {
1463                 adapter->rx_post_starved = false;
1464                 be_post_rx_frags(adapter);
1465         }
1466
1467         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1468 }
1469
1470 static void be_msix_enable(struct be_adapter *adapter)
1471 {
1472         int i, status;
1473
1474         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1475                 adapter->msix_entries[i].entry = i;
1476
1477         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1478                 BE_NUM_MSIX_VECTORS);
1479         if (status == 0)
1480                 adapter->msix_enabled = true;
1481         return;
1482 }
1483
1484 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1485 {
1486         return adapter->msix_entries[
1487                         be_evt_bit_get(adapter, eq_id)].vector;
1488 }
1489
1490 static int be_request_irq(struct be_adapter *adapter,
1491                 struct be_eq_obj *eq_obj,
1492                 void *handler, char *desc)
1493 {
1494         struct net_device *netdev = adapter->netdev;
1495         int vec;
1496
1497         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1498         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1499         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1500 }
1501
1502 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1503 {
1504         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1505         free_irq(vec, adapter);
1506 }
1507
1508 static int be_msix_register(struct be_adapter *adapter)
1509 {
1510         int status;
1511
1512         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1513         if (status)
1514                 goto err;
1515
1516         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1517         if (status)
1518                 goto free_tx_irq;
1519
1520         return 0;
1521
1522 free_tx_irq:
1523         be_free_irq(adapter, &adapter->tx_eq);
1524 err:
1525         dev_warn(&adapter->pdev->dev,
1526                 "MSIX Request IRQ failed - err %d\n", status);
1527         pci_disable_msix(adapter->pdev);
1528         adapter->msix_enabled = false;
1529         return status;
1530 }
1531
1532 static int be_irq_register(struct be_adapter *adapter)
1533 {
1534         struct net_device *netdev = adapter->netdev;
1535         int status;
1536
1537         if (adapter->msix_enabled) {
1538                 status = be_msix_register(adapter);
1539                 if (status == 0)
1540                         goto done;
1541         }
1542
1543         /* INTx */
1544         netdev->irq = adapter->pdev->irq;
1545         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1546                         adapter);
1547         if (status) {
1548                 dev_err(&adapter->pdev->dev,
1549                         "INTx request IRQ failed - err %d\n", status);
1550                 return status;
1551         }
1552 done:
1553         adapter->isr_registered = true;
1554         return 0;
1555 }
1556
1557 static void be_irq_unregister(struct be_adapter *adapter)
1558 {
1559         struct net_device *netdev = adapter->netdev;
1560
1561         if (!adapter->isr_registered)
1562                 return;
1563
1564         /* INTx */
1565         if (!adapter->msix_enabled) {
1566                 free_irq(netdev->irq, adapter);
1567                 goto done;
1568         }
1569
1570         /* MSIx */
1571         be_free_irq(adapter, &adapter->tx_eq);
1572         be_free_irq(adapter, &adapter->rx_eq);
1573 done:
1574         adapter->isr_registered = false;
1575         return;
1576 }
1577
1578 static int be_open(struct net_device *netdev)
1579 {
1580         struct be_adapter *adapter = netdev_priv(netdev);
1581         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1582         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1583         bool link_up;
1584         int status;
1585
1586         /* First time posting */
1587         be_post_rx_frags(adapter);
1588
1589         napi_enable(&rx_eq->napi);
1590         napi_enable(&tx_eq->napi);
1591
1592         be_irq_register(adapter);
1593
1594         be_intr_set(adapter, true);
1595
1596         /* The evt queues are created in unarmed state; arm them */
1597         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1598         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1599
1600         /* Rx compl queue may be in unarmed state; rearm it */
1601         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1602
1603         status = be_cmd_link_status_query(adapter, &link_up);
1604         if (status)
1605                 return status;
1606         be_link_status_update(adapter, link_up);
1607
1608         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1609         return 0;
1610 }
1611
1612 static int be_setup(struct be_adapter *adapter)
1613 {
1614         struct net_device *netdev = adapter->netdev;
1615         u32 if_flags;
1616         int status;
1617
1618         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1619                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1620                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1621         status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1622                         false/* pmac_invalid */, &adapter->if_handle,
1623                         &adapter->pmac_id);
1624         if (status != 0)
1625                 goto do_none;
1626
1627         be_vid_config(netdev);
1628
1629         status = be_cmd_set_flow_control(adapter, true, true);
1630         if (status != 0)
1631                 goto if_destroy;
1632
1633         status = be_tx_queues_create(adapter);
1634         if (status != 0)
1635                 goto if_destroy;
1636
1637         status = be_rx_queues_create(adapter);
1638         if (status != 0)
1639                 goto tx_qs_destroy;
1640
1641         status = be_mcc_queues_create(adapter);
1642         if (status != 0)
1643                 goto rx_qs_destroy;
1644
1645         return 0;
1646
1647 rx_qs_destroy:
1648         be_rx_queues_destroy(adapter);
1649 tx_qs_destroy:
1650         be_tx_queues_destroy(adapter);
1651 if_destroy:
1652         be_cmd_if_destroy(adapter, adapter->if_handle);
1653 do_none:
1654         return status;
1655 }
1656
1657 static int be_clear(struct be_adapter *adapter)
1658 {
1659         be_mcc_queues_destroy(adapter);
1660         be_rx_queues_destroy(adapter);
1661         be_tx_queues_destroy(adapter);
1662
1663         be_cmd_if_destroy(adapter, adapter->if_handle);
1664
1665         return 0;
1666 }
1667
1668 static int be_close(struct net_device *netdev)
1669 {
1670         struct be_adapter *adapter = netdev_priv(netdev);
1671         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1672         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1673         int vec;
1674
1675         cancel_delayed_work_sync(&adapter->work);
1676
1677         netif_stop_queue(netdev);
1678         netif_carrier_off(netdev);
1679         adapter->link_up = false;
1680
1681         be_intr_set(adapter, false);
1682
1683         if (adapter->msix_enabled) {
1684                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1685                 synchronize_irq(vec);
1686                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1687                 synchronize_irq(vec);
1688         } else {
1689                 synchronize_irq(netdev->irq);
1690         }
1691         be_irq_unregister(adapter);
1692
1693         napi_disable(&rx_eq->napi);
1694         napi_disable(&tx_eq->napi);
1695
1696         /* Wait for all pending tx completions to arrive so that
1697          * all tx skbs are freed.
1698          */
1699         be_tx_compl_clean(adapter);
1700
1701         return 0;
1702 }
1703
1704 static struct net_device_ops be_netdev_ops = {
1705         .ndo_open               = be_open,
1706         .ndo_stop               = be_close,
1707         .ndo_start_xmit         = be_xmit,
1708         .ndo_get_stats          = be_get_stats,
1709         .ndo_set_rx_mode        = be_set_multicast_list,
1710         .ndo_set_mac_address    = be_mac_addr_set,
1711         .ndo_change_mtu         = be_change_mtu,
1712         .ndo_validate_addr      = eth_validate_addr,
1713         .ndo_vlan_rx_register   = be_vlan_register,
1714         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1715         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1716 };
1717
1718 static void be_netdev_init(struct net_device *netdev)
1719 {
1720         struct be_adapter *adapter = netdev_priv(netdev);
1721
1722         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1723                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1724                 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1725
1726         netdev->flags |= IFF_MULTICAST;
1727
1728         adapter->rx_csum = true;
1729
1730         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1731
1732         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1733
1734         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1735                 BE_NAPI_WEIGHT);
1736         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1737                 BE_NAPI_WEIGHT);
1738
1739         netif_carrier_off(netdev);
1740         netif_stop_queue(netdev);
1741 }
1742
1743 static void be_unmap_pci_bars(struct be_adapter *adapter)
1744 {
1745         if (adapter->csr)
1746                 iounmap(adapter->csr);
1747         if (adapter->db)
1748                 iounmap(adapter->db);
1749         if (adapter->pcicfg)
1750                 iounmap(adapter->pcicfg);
1751 }
1752
1753 static int be_map_pci_bars(struct be_adapter *adapter)
1754 {
1755         u8 __iomem *addr;
1756
1757         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1758                         pci_resource_len(adapter->pdev, 2));
1759         if (addr == NULL)
1760                 return -ENOMEM;
1761         adapter->csr = addr;
1762
1763         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1764                         128 * 1024);
1765         if (addr == NULL)
1766                 goto pci_map_err;
1767         adapter->db = addr;
1768
1769         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1770                         pci_resource_len(adapter->pdev, 1));
1771         if (addr == NULL)
1772                 goto pci_map_err;
1773         adapter->pcicfg = addr;
1774
1775         return 0;
1776 pci_map_err:
1777         be_unmap_pci_bars(adapter);
1778         return -ENOMEM;
1779 }
1780
1781
1782 static void be_ctrl_cleanup(struct be_adapter *adapter)
1783 {
1784         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1785
1786         be_unmap_pci_bars(adapter);
1787
1788         if (mem->va)
1789                 pci_free_consistent(adapter->pdev, mem->size,
1790                         mem->va, mem->dma);
1791 }
1792
1793 static int be_ctrl_init(struct be_adapter *adapter)
1794 {
1795         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1796         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1797         int status;
1798
1799         status = be_map_pci_bars(adapter);
1800         if (status)
1801                 return status;
1802
1803         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1804         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1805                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1806         if (!mbox_mem_alloc->va) {
1807                 be_unmap_pci_bars(adapter);
1808                 return -1;
1809         }
1810         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1811         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1812         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1813         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1814         spin_lock_init(&adapter->mbox_lock);
1815         spin_lock_init(&adapter->mcc_lock);
1816         spin_lock_init(&adapter->mcc_cq_lock);
1817
1818         return 0;
1819 }
1820
1821 static void be_stats_cleanup(struct be_adapter *adapter)
1822 {
1823         struct be_stats_obj *stats = &adapter->stats;
1824         struct be_dma_mem *cmd = &stats->cmd;
1825
1826         if (cmd->va)
1827                 pci_free_consistent(adapter->pdev, cmd->size,
1828                         cmd->va, cmd->dma);
1829 }
1830
1831 static int be_stats_init(struct be_adapter *adapter)
1832 {
1833         struct be_stats_obj *stats = &adapter->stats;
1834         struct be_dma_mem *cmd = &stats->cmd;
1835
1836         cmd->size = sizeof(struct be_cmd_req_get_stats);
1837         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1838         if (cmd->va == NULL)
1839                 return -1;
1840         return 0;
1841 }
1842
1843 static void __devexit be_remove(struct pci_dev *pdev)
1844 {
1845         struct be_adapter *adapter = pci_get_drvdata(pdev);
1846         if (!adapter)
1847                 return;
1848
1849         unregister_netdev(adapter->netdev);
1850
1851         be_clear(adapter);
1852
1853         be_stats_cleanup(adapter);
1854
1855         be_ctrl_cleanup(adapter);
1856
1857         if (adapter->msix_enabled) {
1858                 pci_disable_msix(adapter->pdev);
1859                 adapter->msix_enabled = false;
1860         }
1861
1862         pci_set_drvdata(pdev, NULL);
1863         pci_release_regions(pdev);
1864         pci_disable_device(pdev);
1865
1866         free_netdev(adapter->netdev);
1867 }
1868
1869 static int be_hw_up(struct be_adapter *adapter)
1870 {
1871         int status;
1872
1873         status = be_cmd_POST(adapter);
1874         if (status)
1875                 return status;
1876
1877         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
1878         if (status)
1879                 return status;
1880
1881         status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
1882         return status;
1883 }
1884
1885 static int __devinit be_probe(struct pci_dev *pdev,
1886                         const struct pci_device_id *pdev_id)
1887 {
1888         int status = 0;
1889         struct be_adapter *adapter;
1890         struct net_device *netdev;
1891         u8 mac[ETH_ALEN];
1892
1893         status = pci_enable_device(pdev);
1894         if (status)
1895                 goto do_none;
1896
1897         status = pci_request_regions(pdev, DRV_NAME);
1898         if (status)
1899                 goto disable_dev;
1900         pci_set_master(pdev);
1901
1902         netdev = alloc_etherdev(sizeof(struct be_adapter));
1903         if (netdev == NULL) {
1904                 status = -ENOMEM;
1905                 goto rel_reg;
1906         }
1907         adapter = netdev_priv(netdev);
1908         adapter->pdev = pdev;
1909         pci_set_drvdata(pdev, adapter);
1910         adapter->netdev = netdev;
1911
1912         be_msix_enable(adapter);
1913
1914         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1915         if (!status) {
1916                 netdev->features |= NETIF_F_HIGHDMA;
1917         } else {
1918                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1919                 if (status) {
1920                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1921                         goto free_netdev;
1922                 }
1923         }
1924
1925         status = be_ctrl_init(adapter);
1926         if (status)
1927                 goto free_netdev;
1928
1929         status = be_cmd_reset_function(adapter);
1930         if (status)
1931                 goto ctrl_clean;
1932
1933         status = be_stats_init(adapter);
1934         if (status)
1935                 goto ctrl_clean;
1936
1937         status = be_hw_up(adapter);
1938         if (status)
1939                 goto stats_clean;
1940
1941         status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
1942                         true /* permanent */, 0);
1943         if (status)
1944                 goto stats_clean;
1945         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1946
1947         INIT_DELAYED_WORK(&adapter->work, be_worker);
1948         be_netdev_init(netdev);
1949         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1950
1951         status = be_setup(adapter);
1952         if (status)
1953                 goto stats_clean;
1954         status = register_netdev(netdev);
1955         if (status != 0)
1956                 goto unsetup;
1957
1958         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1959         return 0;
1960
1961 unsetup:
1962         be_clear(adapter);
1963 stats_clean:
1964         be_stats_cleanup(adapter);
1965 ctrl_clean:
1966         be_ctrl_cleanup(adapter);
1967 free_netdev:
1968         free_netdev(adapter->netdev);
1969 rel_reg:
1970         pci_release_regions(pdev);
1971 disable_dev:
1972         pci_disable_device(pdev);
1973 do_none:
1974         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1975         return status;
1976 }
1977
1978 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1979 {
1980         struct be_adapter *adapter = pci_get_drvdata(pdev);
1981         struct net_device *netdev =  adapter->netdev;
1982
1983         netif_device_detach(netdev);
1984         if (netif_running(netdev)) {
1985                 rtnl_lock();
1986                 be_close(netdev);
1987                 rtnl_unlock();
1988         }
1989         be_clear(adapter);
1990
1991         pci_save_state(pdev);
1992         pci_disable_device(pdev);
1993         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1994         return 0;
1995 }
1996
1997 static int be_resume(struct pci_dev *pdev)
1998 {
1999         int status = 0;
2000         struct be_adapter *adapter = pci_get_drvdata(pdev);
2001         struct net_device *netdev =  adapter->netdev;
2002
2003         netif_device_detach(netdev);
2004
2005         status = pci_enable_device(pdev);
2006         if (status)
2007                 return status;
2008
2009         pci_set_power_state(pdev, 0);
2010         pci_restore_state(pdev);
2011
2012         be_setup(adapter);
2013         if (netif_running(netdev)) {
2014                 rtnl_lock();
2015                 be_open(netdev);
2016                 rtnl_unlock();
2017         }
2018         netif_device_attach(netdev);
2019         return 0;
2020 }
2021
2022 static struct pci_driver be_driver = {
2023         .name = DRV_NAME,
2024         .id_table = be_dev_ids,
2025         .probe = be_probe,
2026         .remove = be_remove,
2027         .suspend = be_suspend,
2028         .resume = be_resume
2029 };
2030
2031 static int __init be_init_module(void)
2032 {
2033         if (rx_frag_size != 8192 && rx_frag_size != 4096
2034                 && rx_frag_size != 2048) {
2035                 printk(KERN_WARNING DRV_NAME
2036                         " : Module param rx_frag_size must be 2048/4096/8192."
2037                         " Using 2048\n");
2038                 rx_frag_size = 2048;
2039         }
2040
2041         return pci_register_driver(&be_driver);
2042 }
2043 module_init(be_init_module);
2044
2045 static void __exit be_exit_module(void)
2046 {
2047         pci_unregister_driver(&be_driver);
2048 }
2049 module_exit(be_exit_module);