SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2010 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, BE_DEVICE_ID2) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  37         { 0 }
  38 };
  39 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  40
  41 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  42 {
  43         struct be_dma_mem *mem = &q->dma_mem;
  44         if (mem->va)
  45                 pci_free_consistent(adapter->pdev, mem->size,
  46                         mem->va, mem->dma);
  47 }
  48
  49 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  50                 u16 len, u16 entry_size)
  51 {
  52         struct be_dma_mem *mem = &q->dma_mem;
  53
  54         memset(q, 0, sizeof(*q));
  55         q->len = len;
  56         q->entry_size = entry_size;
  57         mem->size = len * entry_size;
  58         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  59         if (!mem->va)
  60                 return -1;
  61         memset(mem->va, 0, mem->size);
  62         return 0;
  63 }
  64
  65 static void be_intr_set(struct be_adapter *adapter, bool enable)
  66 {
  67         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  68         u32 reg = ioread32(addr);
  69         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  70
  71         if (adapter->eeh_err)
  72                 return;
  73
  74         if (!enabled && enable)
  75                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  76         else if (enabled && !enable)
  77                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  78         else
  79                 return;
  80
  81         iowrite32(reg, addr);
  82 }
  83
  84 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  85 {
  86         u32 val = 0;
  87         val |= qid & DB_RQ_RING_ID_MASK;
  88         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  89         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  90 }
  91
  92 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  93 {
  94         u32 val = 0;
  95         val |= qid & DB_TXULP_RING_ID_MASK;
  96         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  97         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  98 }
  99
 100 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
 101                 bool arm, bool clear_int, u16 num_popped)
 102 {
 103         u32 val = 0;
 104         val |= qid & DB_EQ_RING_ID_MASK;
 105
 106         if (adapter->eeh_err)
 107                 return;
 108
 109         if (arm)
 110                 val |= 1 << DB_EQ_REARM_SHIFT;
 111         if (clear_int)
 112                 val |= 1 << DB_EQ_CLR_SHIFT;
 113         val |= 1 << DB_EQ_EVNT_SHIFT;
 114         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 115         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 116 }
 117
 118 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 119 {
 120         u32 val = 0;
 121         val |= qid & DB_CQ_RING_ID_MASK;
 122
 123         if (adapter->eeh_err)
 124                 return;
 125
 126         if (arm)
 127                 val |= 1 << DB_CQ_REARM_SHIFT;
 128         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 129         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 130 }
 131
 132 static int be_mac_addr_set(struct net_device *netdev, void *p)
 133 {
 134         struct be_adapter *adapter = netdev_priv(netdev);
 135         struct sockaddr *addr = p;
 136         int status = 0;
 137
 138         if (!is_valid_ether_addr(addr->sa_data))
 139                 return -EADDRNOTAVAIL;
 140
 141         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 142         if (status)
 143                 return status;
 144
 145         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 146                         adapter->if_handle, &adapter->pmac_id);
 147         if (!status)
 148                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 149
 150         return status;
 151 }
 152
 153 void netdev_stats_update(struct be_adapter *adapter)
 154 {
 155         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 156         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 157         struct be_port_rxf_stats *port_stats =
 158                         &rxf_stats->port[adapter->port_num];
 159         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 160         struct be_erx_stats *erx_stats = &hw_stats->erx;
 161
 162         dev_stats->rx_packets = drvr_stats(adapter)->be_rx_pkts;
 163         dev_stats->tx_packets = drvr_stats(adapter)->be_tx_pkts;
 164         dev_stats->rx_bytes = drvr_stats(adapter)->be_rx_bytes;
 165         dev_stats->tx_bytes = drvr_stats(adapter)->be_tx_bytes;
 166
 167         /* bad pkts received */
 168         dev_stats->rx_errors = port_stats->rx_crc_errors +
 169                 port_stats->rx_alignment_symbol_errors +
 170                 port_stats->rx_in_range_errors +
 171                 port_stats->rx_out_range_errors +
 172                 port_stats->rx_frame_too_long +
 173                 port_stats->rx_dropped_too_small +
 174                 port_stats->rx_dropped_too_short +
 175                 port_stats->rx_dropped_header_too_small +
 176                 port_stats->rx_dropped_tcp_length +
 177                 port_stats->rx_dropped_runt +
 178                 port_stats->rx_tcp_checksum_errs +
 179                 port_stats->rx_ip_checksum_errs +
 180                 port_stats->rx_udp_checksum_errs;
 181
 182         /*  no space in linux buffers: best possible approximation */
 183         dev_stats->rx_dropped =
 184                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 185
 186         /* detailed rx errors */
 187         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 188                 port_stats->rx_out_range_errors +
 189                 port_stats->rx_frame_too_long;
 190
 191         /* receive ring buffer overflow */
 192         dev_stats->rx_over_errors = 0;
 193
 194         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 195
 196         /* frame alignment errors */
 197         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 198
 199         /* receiver fifo overrun */
 200         /* drops_no_pbuf is no per i/f, it's per BE card */
 201         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 202                                         port_stats->rx_input_fifo_overflow +
 203                                         rxf_stats->rx_drops_no_pbuf;
 204         /* receiver missed packetd */
 205         dev_stats->rx_missed_errors = 0;
 206
 207         /*  packet transmit problems */
 208         dev_stats->tx_errors = 0;
 209
 210         /* no space available in linux */
 211         dev_stats->tx_dropped = 0;
 212
 213         dev_stats->multicast = port_stats->rx_multicast_frames;
 214         dev_stats->collisions = 0;
 215
 216         /* detailed tx_errors */
 217         dev_stats->tx_aborted_errors = 0;
 218         dev_stats->tx_carrier_errors = 0;
 219         dev_stats->tx_fifo_errors = 0;
 220         dev_stats->tx_heartbeat_errors = 0;
 221         dev_stats->tx_window_errors = 0;
 222 }
 223
 224 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 225 {
 226         struct net_device *netdev = adapter->netdev;
 227
 228         /* If link came up or went down */
 229         if (adapter->link_up != link_up) {
 230                 adapter->link_speed = -1;
 231                 if (link_up) {
 232                         netif_start_queue(netdev);
 233                         netif_carrier_on(netdev);
 234                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 235                 } else {
 236                         netif_stop_queue(netdev);
 237                         netif_carrier_off(netdev);
 238                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 239                 }
 240                 adapter->link_up = link_up;
 241         }
 242 }
 243
 244 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 245 static void be_rx_eqd_update(struct be_adapter *adapter)
 246 {
 247         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 248         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 249         ulong now = jiffies;
 250         u32 eqd;
 251
 252         if (!rx_eq->enable_aic)
 253                 return;
 254
 255         /* Wrapped around */
 256         if (time_before(now, stats->rx_fps_jiffies)) {
 257                 stats->rx_fps_jiffies = now;
 258                 return;
 259         }
 260
 261         /* Update once a second */
 262         if ((now - stats->rx_fps_jiffies) < HZ)
 263                 return;
 264
 265         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 266                         ((now - stats->rx_fps_jiffies) / HZ);
 267
 268         stats->rx_fps_jiffies = now;
 269         stats->be_prev_rx_frags = stats->be_rx_frags;
 270         eqd = stats->be_rx_fps / 110000;
 271         eqd = eqd << 3;
 272         if (eqd > rx_eq->max_eqd)
 273                 eqd = rx_eq->max_eqd;
 274         if (eqd < rx_eq->min_eqd)
 275                 eqd = rx_eq->min_eqd;
 276         if (eqd < 10)
 277                 eqd = 0;
 278         if (eqd != rx_eq->cur_eqd)
 279                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 280
 281         rx_eq->cur_eqd = eqd;
 282 }
 283
 284 static struct net_device_stats *be_get_stats(struct net_device *dev)
 285 {
 286         return &dev->stats;
 287 }
 288
 289 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 290 {
 291         u64 rate = bytes;
 292
 293         do_div(rate, ticks / HZ);
 294         rate <<= 3;                     /* bytes/sec -> bits/sec */
 295         do_div(rate, 1000000ul);        /* MB/Sec */
 296
 297         return rate;
 298 }
 299
 300 static void be_tx_rate_update(struct be_adapter *adapter)
 301 {
 302         struct be_drvr_stats *stats = drvr_stats(adapter);
 303         ulong now = jiffies;
 304
 305         /* Wrapped around? */
 306         if (time_before(now, stats->be_tx_jiffies)) {
 307                 stats->be_tx_jiffies = now;
 308                 return;
 309         }
 310
 311         /* Update tx rate once in two seconds */
 312         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 313                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 314                                                   - stats->be_tx_bytes_prev,
 315                                                  now - stats->be_tx_jiffies);
 316                 stats->be_tx_jiffies = now;
 317                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 318         }
 319 }
 320
 321 static void be_tx_stats_update(struct be_adapter *adapter,
 322                         u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
 323 {
 324         struct be_drvr_stats *stats = drvr_stats(adapter);
 325         stats->be_tx_reqs++;
 326         stats->be_tx_wrbs += wrb_cnt;
 327         stats->be_tx_bytes += copied;
 328         stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
 329         if (stopped)
 330                 stats->be_tx_stops++;
 331 }
 332
 333 /* Determine number of WRB entries needed to xmit data in an skb */
 334 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 335 {
 336         int cnt = (skb->len > skb->data_len);
 337
 338         cnt += skb_shinfo(skb)->nr_frags;
 339
 340         /* to account for hdr wrb */
 341         cnt++;
 342         if (cnt & 1) {
 343                 /* add a dummy to make it an even num */
 344                 cnt++;
 345                 *dummy = true;
 346         } else
 347                 *dummy = false;
 348         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 349         return cnt;
 350 }
 351
 352 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 353 {
 354         wrb->frag_pa_hi = upper_32_bits(addr);
 355         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 356         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 357 }
 358
 359 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 360                 bool vlan, u32 wrb_cnt, u32 len)
 361 {
 362         memset(hdr, 0, sizeof(*hdr));
 363
 364         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 365
 366         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 367                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 368                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 369                         hdr, skb_shinfo(skb)->gso_size);
 370         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 371                 if (is_tcp_pkt(skb))
 372                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 373                 else if (is_udp_pkt(skb))
 374                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 375         }
 376
 377         if (vlan && vlan_tx_tag_present(skb)) {
 378                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 379                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 380                         hdr, vlan_tx_tag_get(skb));
 381         }
 382
 383         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 384         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 385         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 386         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 387 }
 388
 389 static void unmap_tx_frag(struct pci_dev *pdev, struct be_eth_wrb *wrb,
 390                 bool unmap_single)
 391 {
 392         dma_addr_t dma;
 393
 394         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 395
 396         dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
 397         if (dma != 0) {
 398                 if (unmap_single)
 399                         pci_unmap_single(pdev, dma, wrb->frag_len,
 400                                 PCI_DMA_TODEVICE);
 401                 else
 402                         pci_unmap_page(pdev, dma, wrb->frag_len,
 403                                 PCI_DMA_TODEVICE);
 404         }
 405 }
 406
 407 static int make_tx_wrbs(struct be_adapter *adapter,
 408                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 409 {
 410         dma_addr_t busaddr;
 411         int i, copied = 0;
 412         struct pci_dev *pdev = adapter->pdev;
 413         struct sk_buff *first_skb = skb;
 414         struct be_queue_info *txq = &adapter->tx_obj.q;
 415         struct be_eth_wrb *wrb;
 416         struct be_eth_hdr_wrb *hdr;
 417         bool map_single = false;
 418         u16 map_head;
 419
 420         hdr = queue_head_node(txq);
 421         queue_head_inc(txq);
 422         map_head = txq->head;
 423
 424         if (skb->len > skb->data_len) {
 425                 int len = skb->len - skb->data_len;
 426                 busaddr = pci_map_single(pdev, skb->data, len,
 427                                          PCI_DMA_TODEVICE);
 428                 if (pci_dma_mapping_error(pdev, busaddr))
 429                         goto dma_err;
 430                 map_single = true;
 431                 wrb = queue_head_node(txq);
 432                 wrb_fill(wrb, busaddr, len);
 433                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 434                 queue_head_inc(txq);
 435                 copied += len;
 436         }
 437
 438         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 439                 struct skb_frag_struct *frag =
 440                         &skb_shinfo(skb)->frags[i];
 441                 busaddr = pci_map_page(pdev, frag->page,
 442                                        frag->page_offset,
 443                                        frag->size, PCI_DMA_TODEVICE);
 444                 if (pci_dma_mapping_error(pdev, busaddr))
 445                         goto dma_err;
 446                 wrb = queue_head_node(txq);
 447                 wrb_fill(wrb, busaddr, frag->size);
 448                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 449                 queue_head_inc(txq);
 450                 copied += frag->size;
 451         }
 452
 453         if (dummy_wrb) {
 454                 wrb = queue_head_node(txq);
 455                 wrb_fill(wrb, 0, 0);
 456                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 457                 queue_head_inc(txq);
 458         }
 459
 460         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 461                 wrb_cnt, copied);
 462         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 463
 464         return copied;
 465 dma_err:
 466         txq->head = map_head;
 467         while (copied) {
 468                 wrb = queue_head_node(txq);
 469                 unmap_tx_frag(pdev, wrb, map_single);
 470                 map_single = false;
 471                 copied -= wrb->frag_len;
 472                 queue_head_inc(txq);
 473         }
 474         return 0;
 475 }
 476
 477 static netdev_tx_t be_xmit(struct sk_buff *skb,
 478                         struct net_device *netdev)
 479 {
 480         struct be_adapter *adapter = netdev_priv(netdev);
 481         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 482         struct be_queue_info *txq = &tx_obj->q;
 483         u32 wrb_cnt = 0, copied = 0;
 484         u32 start = txq->head;
 485         bool dummy_wrb, stopped = false;
 486
 487         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 488
 489         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 490         if (copied) {
 491                 /* record the sent skb in the sent_skb table */
 492                 BUG_ON(tx_obj->sent_skb_list[start]);
 493                 tx_obj->sent_skb_list[start] = skb;
 494
 495                 /* Ensure txq has space for the next skb; Else stop the queue
 496                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 497                  * tx compls of the current transmit which'll wake up the queue
 498                  */
 499                 atomic_add(wrb_cnt, &txq->used);
 500                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 501                                                                 txq->len) {
 502                         netif_stop_queue(netdev);
 503                         stopped = true;
 504                 }
 505
 506                 be_txq_notify(adapter, txq->id, wrb_cnt);
 507
 508                 be_tx_stats_update(adapter, wrb_cnt, copied,
 509                                 skb_shinfo(skb)->gso_segs, stopped);
 510         } else {
 511                 txq->head = start;
 512                 dev_kfree_skb_any(skb);
 513         }
 514         return NETDEV_TX_OK;
 515 }
 516
 517 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 518 {
 519         struct be_adapter *adapter = netdev_priv(netdev);
 520         if (new_mtu < BE_MIN_MTU ||
 521                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 522                                         (ETH_HLEN + ETH_FCS_LEN))) {
 523                 dev_info(&adapter->pdev->dev,
 524                         "MTU must be between %d and %d bytes\n",
 525                         BE_MIN_MTU,
 526                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 527                 return -EINVAL;
 528         }
 529         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 530                         netdev->mtu, new_mtu);
 531         netdev->mtu = new_mtu;
 532         return 0;
 533 }
 534
 535 /*
 536  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 537  * If the user configures more, place BE in vlan promiscuous mode.
 538  */
 539 static int be_vid_config(struct be_adapter *adapter)
 540 {
 541         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 542         u16 ntags = 0, i;
 543         int status = 0;
 544
 545         if (adapter->vlans_added <= adapter->max_vlans)  {
 546                 /* Construct VLAN Table to give to HW */
 547                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 548                         if (adapter->vlan_tag[i]) {
 549                                 vtag[ntags] = cpu_to_le16(i);
 550                                 ntags++;
 551                         }
 552                 }
 553                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 554                                         vtag, ntags, 1, 0);
 555         } else {
 556                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 557                                         NULL, 0, 1, 1);
 558         }
 559         return status;
 560 }
 561
 562 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 563 {
 564         struct be_adapter *adapter = netdev_priv(netdev);
 565         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 566         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 567
 568         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 569         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 570         adapter->vlan_grp = grp;
 571         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 572         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 573 }
 574
 575 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 576 {
 577         struct be_adapter *adapter = netdev_priv(netdev);
 578
 579         adapter->vlan_tag[vid] = 1;
 580         adapter->vlans_added++;
 581         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 582                 be_vid_config(adapter);
 583 }
 584
 585 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 586 {
 587         struct be_adapter *adapter = netdev_priv(netdev);
 588
 589         adapter->vlan_tag[vid] = 0;
 590         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 591         adapter->vlans_added--;
 592         if (adapter->vlans_added <= adapter->max_vlans)
 593                 be_vid_config(adapter);
 594 }
 595
 596 static void be_set_multicast_list(struct net_device *netdev)
 597 {
 598         struct be_adapter *adapter = netdev_priv(netdev);
 599
 600         if (netdev->flags & IFF_PROMISC) {
 601                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 602                 adapter->promiscuous = true;
 603                 goto done;
 604         }
 605
 606         /* BE was previously in promiscous mode; disable it */
 607         if (adapter->promiscuous) {
 608                 adapter->promiscuous = false;
 609                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 610         }
 611
 612         /* Enable multicast promisc if num configured exceeds what we support */
 613         if (netdev->flags & IFF_ALLMULTI ||
 614             netdev_mc_count(netdev) > BE_MAX_MC) {
 615                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
 616                                 &adapter->mc_cmd_mem);
 617                 goto done;
 618         }
 619
 620         be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
 621                 &adapter->mc_cmd_mem);
 622 done:
 623         return;
 624 }
 625
 626 static void be_rx_rate_update(struct be_adapter *adapter)
 627 {
 628         struct be_drvr_stats *stats = drvr_stats(adapter);
 629         ulong now = jiffies;
 630
 631         /* Wrapped around */
 632         if (time_before(now, stats->be_rx_jiffies)) {
 633                 stats->be_rx_jiffies = now;
 634                 return;
 635         }
 636
 637         /* Update the rate once in two seconds */
 638         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 639                 return;
 640
 641         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 642                                           - stats->be_rx_bytes_prev,
 643                                          now - stats->be_rx_jiffies);
 644         stats->be_rx_jiffies = now;
 645         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 646 }
 647
 648 static void be_rx_stats_update(struct be_adapter *adapter,
 649                 u32 pktsize, u16 numfrags)
 650 {
 651         struct be_drvr_stats *stats = drvr_stats(adapter);
 652
 653         stats->be_rx_compl++;
 654         stats->be_rx_frags += numfrags;
 655         stats->be_rx_bytes += pktsize;
 656         stats->be_rx_pkts++;
 657 }
 658
 659 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 660 {
 661         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 662
 663         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 664         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 665         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 666         if (ip_version) {
 667                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 668                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 669         }
 670         ipv6_chk = (ip_version && (tcpf || udpf));
 671
 672         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 673 }
 674
 675 static struct be_rx_page_info *
 676 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 677 {
 678         struct be_rx_page_info *rx_page_info;
 679         struct be_queue_info *rxq = &adapter->rx_obj.q;
 680
 681         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 682         BUG_ON(!rx_page_info->page);
 683
 684         if (rx_page_info->last_page_user) {
 685                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 686                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 687                 rx_page_info->last_page_user = false;
 688         }
 689
 690         atomic_dec(&rxq->used);
 691         return rx_page_info;
 692 }
 693
 694 /* Throwaway the data in the Rx completion */
 695 static void be_rx_compl_discard(struct be_adapter *adapter,
 696                         struct be_eth_rx_compl *rxcp)
 697 {
 698         struct be_queue_info *rxq = &adapter->rx_obj.q;
 699         struct be_rx_page_info *page_info;
 700         u16 rxq_idx, i, num_rcvd;
 701
 702         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 703         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 704
 705         for (i = 0; i < num_rcvd; i++) {
 706                 page_info = get_rx_page_info(adapter, rxq_idx);
 707                 put_page(page_info->page);
 708                 memset(page_info, 0, sizeof(*page_info));
 709                 index_inc(&rxq_idx, rxq->len);
 710         }
 711 }
 712
 713 /*
 714  * skb_fill_rx_data forms a complete skb for an ether frame
 715  * indicated by rxcp.
 716  */
 717 static void skb_fill_rx_data(struct be_adapter *adapter,
 718                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
 719                         u16 num_rcvd)
 720 {
 721         struct be_queue_info *rxq = &adapter->rx_obj.q;
 722         struct be_rx_page_info *page_info;
 723         u16 rxq_idx, i, j;
 724         u32 pktsize, hdr_len, curr_frag_len, size;
 725         u8 *start;
 726
 727         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 728         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 729
 730         page_info = get_rx_page_info(adapter, rxq_idx);
 731
 732         start = page_address(page_info->page) + page_info->page_offset;
 733         prefetch(start);
 734
 735         /* Copy data in the first descriptor of this completion */
 736         curr_frag_len = min(pktsize, rx_frag_size);
 737
 738         /* Copy the header portion into skb_data */
 739         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 740         memcpy(skb->data, start, hdr_len);
 741         skb->len = curr_frag_len;
 742         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 743                 /* Complete packet has now been moved to data */
 744                 put_page(page_info->page);
 745                 skb->data_len = 0;
 746                 skb->tail += curr_frag_len;
 747         } else {
 748                 skb_shinfo(skb)->nr_frags = 1;
 749                 skb_shinfo(skb)->frags[0].page = page_info->page;
 750                 skb_shinfo(skb)->frags[0].page_offset =
 751                                         page_info->page_offset + hdr_len;
 752                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 753                 skb->data_len = curr_frag_len - hdr_len;
 754                 skb->tail += hdr_len;
 755         }
 756         page_info->page = NULL;
 757
 758         if (pktsize <= rx_frag_size) {
 759                 BUG_ON(num_rcvd != 1);
 760                 goto done;
 761         }
 762
 763         /* More frags present for this completion */
 764         size = pktsize;
 765         for (i = 1, j = 0; i < num_rcvd; i++) {
 766                 size -= curr_frag_len;
 767                 index_inc(&rxq_idx, rxq->len);
 768                 page_info = get_rx_page_info(adapter, rxq_idx);
 769
 770                 curr_frag_len = min(size, rx_frag_size);
 771
 772                 /* Coalesce all frags from the same physical page in one slot */
 773                 if (page_info->page_offset == 0) {
 774                         /* Fresh page */
 775                         j++;
 776                         skb_shinfo(skb)->frags[j].page = page_info->page;
 777                         skb_shinfo(skb)->frags[j].page_offset =
 778                                                         page_info->page_offset;
 779                         skb_shinfo(skb)->frags[j].size = 0;
 780                         skb_shinfo(skb)->nr_frags++;
 781                 } else {
 782                         put_page(page_info->page);
 783                 }
 784
 785                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 786                 skb->len += curr_frag_len;
 787                 skb->data_len += curr_frag_len;
 788
 789                 page_info->page = NULL;
 790         }
 791         BUG_ON(j > MAX_SKB_FRAGS);
 792
 793 done:
 794         be_rx_stats_update(adapter, pktsize, num_rcvd);
 795         return;
 796 }
 797
 798 /* Process the RX completion indicated by rxcp when GRO is disabled */
 799 static void be_rx_compl_process(struct be_adapter *adapter,
 800                         struct be_eth_rx_compl *rxcp)
 801 {
 802         struct sk_buff *skb;
 803         u32 vlanf, vid;
 804         u16 num_rcvd;
 805         u8 vtm;
 806
 807         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 808         /* Is it a flush compl that has no data */
 809         if (unlikely(num_rcvd == 0))
 810                 return;
 811
 812         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 813         if (unlikely(!skb)) {
 814                 if (net_ratelimit())
 815                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 816                 be_rx_compl_discard(adapter, rxcp);
 817                 return;
 818         }
 819
 820         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 821
 822         if (do_pkt_csum(rxcp, adapter->rx_csum))
 823                 skb->ip_summed = CHECKSUM_NONE;
 824         else
 825                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 826
 827         skb->truesize = skb->len + sizeof(struct sk_buff);
 828         skb->protocol = eth_type_trans(skb, adapter->netdev);
 829         skb->dev = adapter->netdev;
 830
 831         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 832         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 833
 834         /* vlanf could be wrongly set in some cards.
 835          * ignore if vtm is not set */
 836         if ((adapter->cap & 0x400) && !vtm)
 837                 vlanf = 0;
 838
 839         if (unlikely(vlanf)) {
 840                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 841                         kfree_skb(skb);
 842                         return;
 843                 }
 844                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 845                 vid = be16_to_cpu(vid);
 846                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 847         } else {
 848                 netif_receive_skb(skb);
 849         }
 850
 851         return;
 852 }
 853
 854 /* Process the RX completion indicated by rxcp when GRO is enabled */
 855 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 856                         struct be_eth_rx_compl *rxcp)
 857 {
 858         struct be_rx_page_info *page_info;
 859         struct sk_buff *skb = NULL;
 860         struct be_queue_info *rxq = &adapter->rx_obj.q;
 861         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 862         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 863         u16 i, rxq_idx = 0, vid, j;
 864         u8 vtm;
 865
 866         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 867         /* Is it a flush compl that has no data */
 868         if (unlikely(num_rcvd == 0))
 869                 return;
 870
 871         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 872         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 873         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 874         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 875
 876         /* vlanf could be wrongly set in some cards.
 877          * ignore if vtm is not set */
 878         if ((adapter->cap & 0x400) && !vtm)
 879                 vlanf = 0;
 880
 881         skb = napi_get_frags(&eq_obj->napi);
 882         if (!skb) {
 883                 be_rx_compl_discard(adapter, rxcp);
 884                 return;
 885         }
 886
 887         remaining = pkt_size;
 888         for (i = 0, j = -1; i < num_rcvd; i++) {
 889                 page_info = get_rx_page_info(adapter, rxq_idx);
 890
 891                 curr_frag_len = min(remaining, rx_frag_size);
 892
 893                 /* Coalesce all frags from the same physical page in one slot */
 894                 if (i == 0 || page_info->page_offset == 0) {
 895                         /* First frag or Fresh page */
 896                         j++;
 897                         skb_shinfo(skb)->frags[j].page = page_info->page;
 898                         skb_shinfo(skb)->frags[j].page_offset =
 899                                                         page_info->page_offset;
 900                         skb_shinfo(skb)->frags[j].size = 0;
 901                 } else {
 902                         put_page(page_info->page);
 903                 }
 904                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 905
 906                 remaining -= curr_frag_len;
 907                 index_inc(&rxq_idx, rxq->len);
 908                 memset(page_info, 0, sizeof(*page_info));
 909         }
 910         BUG_ON(j > MAX_SKB_FRAGS);
 911
 912         skb_shinfo(skb)->nr_frags = j + 1;
 913         skb->len = pkt_size;
 914         skb->data_len = pkt_size;
 915         skb->truesize += pkt_size;
 916         skb->ip_summed = CHECKSUM_UNNECESSARY;
 917
 918         if (likely(!vlanf)) {
 919                 napi_gro_frags(&eq_obj->napi);
 920         } else {
 921                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 922                 vid = be16_to_cpu(vid);
 923
 924                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 925                         return;
 926
 927                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 928         }
 929
 930         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 931         return;
 932 }
 933
 934 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 935 {
 936         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 937
 938         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 939                 return NULL;
 940
 941         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 942
 943         queue_tail_inc(&adapter->rx_obj.cq);
 944         return rxcp;
 945 }
 946
 947 /* To reset the valid bit, we need to reset the whole word as
 948  * when walking the queue the valid entries are little-endian
 949  * and invalid entries are host endian
 950  */
 951 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 952 {
 953         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 954 }
 955
 956 static inline struct page *be_alloc_pages(u32 size)
 957 {
 958         gfp_t alloc_flags = GFP_ATOMIC;
 959         u32 order = get_order(size);
 960         if (order > 0)
 961                 alloc_flags |= __GFP_COMP;
 962         return  alloc_pages(alloc_flags, order);
 963 }
 964
 965 /*
 966  * Allocate a page, split it to fragments of size rx_frag_size and post as
 967  * receive buffers to BE
 968  */
 969 static void be_post_rx_frags(struct be_adapter *adapter)
 970 {
 971         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 972         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 973         struct be_queue_info *rxq = &adapter->rx_obj.q;
 974         struct page *pagep = NULL;
 975         struct be_eth_rx_d *rxd;
 976         u64 page_dmaaddr = 0, frag_dmaaddr;
 977         u32 posted, page_offset = 0;
 978
 979         page_info = &page_info_tbl[rxq->head];
 980         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 981                 if (!pagep) {
 982                         pagep = be_alloc_pages(adapter->big_page_size);
 983                         if (unlikely(!pagep)) {
 984                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 985                                 break;
 986                         }
 987                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 988                                                 adapter->big_page_size,
 989                                                 PCI_DMA_FROMDEVICE);
 990                         page_info->page_offset = 0;
 991                 } else {
 992                         get_page(pagep);
 993                         page_info->page_offset = page_offset + rx_frag_size;
 994                 }
 995                 page_offset = page_info->page_offset;
 996                 page_info->page = pagep;
 997                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 998                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 999
1000                 rxd = queue_head_node(rxq);
1001                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1002                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1003
1004                 /* Any space left in the current big page for another frag? */
1005                 if ((page_offset + rx_frag_size + rx_frag_size) >
1006                                         adapter->big_page_size) {
1007                         pagep = NULL;
1008                         page_info->last_page_user = true;
1009                 }
1010
1011                 prev_page_info = page_info;
1012                 queue_head_inc(rxq);
1013                 page_info = &page_info_tbl[rxq->head];
1014         }
1015         if (pagep)
1016                 prev_page_info->last_page_user = true;
1017
1018         if (posted) {
1019                 atomic_add(posted, &rxq->used);
1020                 be_rxq_notify(adapter, rxq->id, posted);
1021         } else if (atomic_read(&rxq->used) == 0) {
1022                 /* Let be_worker replenish when memory is available */
1023                 adapter->rx_post_starved = true;
1024         }
1025
1026         return;
1027 }
1028
1029 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1030 {
1031         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1032
1033         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1034                 return NULL;
1035
1036         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1037
1038         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1039
1040         queue_tail_inc(tx_cq);
1041         return txcp;
1042 }
1043
1044 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1045 {
1046         struct be_queue_info *txq = &adapter->tx_obj.q;
1047         struct be_eth_wrb *wrb;
1048         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1049         struct sk_buff *sent_skb;
1050         u64 busaddr;
1051         u16 cur_index, num_wrbs = 0;
1052
1053         cur_index = txq->tail;
1054         sent_skb = sent_skbs[cur_index];
1055         BUG_ON(!sent_skb);
1056         sent_skbs[cur_index] = NULL;
1057         wrb = queue_tail_node(txq);
1058         be_dws_le_to_cpu(wrb, sizeof(*wrb));
1059         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1060         if (busaddr != 0) {
1061                 pci_unmap_single(adapter->pdev, busaddr,
1062                                  wrb->frag_len, PCI_DMA_TODEVICE);
1063         }
1064         num_wrbs++;
1065         queue_tail_inc(txq);
1066
1067         while (cur_index != last_index) {
1068                 cur_index = txq->tail;
1069                 wrb = queue_tail_node(txq);
1070                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1071                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1072                 if (busaddr != 0) {
1073                         pci_unmap_page(adapter->pdev, busaddr,
1074                                        wrb->frag_len, PCI_DMA_TODEVICE);
1075                 }
1076                 num_wrbs++;
1077                 queue_tail_inc(txq);
1078         }
1079
1080         atomic_sub(num_wrbs, &txq->used);
1081
1082         kfree_skb(sent_skb);
1083 }
1084
1085 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1086 {
1087         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1088
1089         if (!eqe->evt)
1090                 return NULL;
1091
1092         eqe->evt = le32_to_cpu(eqe->evt);
1093         queue_tail_inc(&eq_obj->q);
1094         return eqe;
1095 }
1096
1097 static int event_handle(struct be_adapter *adapter,
1098                         struct be_eq_obj *eq_obj)
1099 {
1100         struct be_eq_entry *eqe;
1101         u16 num = 0;
1102
1103         while ((eqe = event_get(eq_obj)) != NULL) {
1104                 eqe->evt = 0;
1105                 num++;
1106         }
1107
1108         /* Deal with any spurious interrupts that come
1109          * without events
1110          */
1111         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1112         if (num)
1113                 napi_schedule(&eq_obj->napi);
1114
1115         return num;
1116 }
1117
1118 /* Just read and notify events without processing them.
1119  * Used at the time of destroying event queues */
1120 static void be_eq_clean(struct be_adapter *adapter,
1121                         struct be_eq_obj *eq_obj)
1122 {
1123         struct be_eq_entry *eqe;
1124         u16 num = 0;
1125
1126         while ((eqe = event_get(eq_obj)) != NULL) {
1127                 eqe->evt = 0;
1128                 num++;
1129         }
1130
1131         if (num)
1132                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1133 }
1134
1135 static void be_rx_q_clean(struct be_adapter *adapter)
1136 {
1137         struct be_rx_page_info *page_info;
1138         struct be_queue_info *rxq = &adapter->rx_obj.q;
1139         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1140         struct be_eth_rx_compl *rxcp;
1141         u16 tail;
1142
1143         /* First cleanup pending rx completions */
1144         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1145                 be_rx_compl_discard(adapter, rxcp);
1146                 be_rx_compl_reset(rxcp);
1147                 be_cq_notify(adapter, rx_cq->id, true, 1);
1148         }
1149
1150         /* Then free posted rx buffer that were not used */
1151         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1152         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1153                 page_info = get_rx_page_info(adapter, tail);
1154                 put_page(page_info->page);
1155                 memset(page_info, 0, sizeof(*page_info));
1156         }
1157         BUG_ON(atomic_read(&rxq->used));
1158 }
1159
1160 static void be_tx_compl_clean(struct be_adapter *adapter)
1161 {
1162         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1163         struct be_queue_info *txq = &adapter->tx_obj.q;
1164         struct be_eth_tx_compl *txcp;
1165         u16 end_idx, cmpl = 0, timeo = 0;
1166         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1167         struct sk_buff *sent_skb;
1168         bool dummy_wrb;
1169
1170         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1171         do {
1172                 while ((txcp = be_tx_compl_get(tx_cq))) {
1173                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1174                                         wrb_index, txcp);
1175                         be_tx_compl_process(adapter, end_idx);
1176                         cmpl++;
1177                 }
1178                 if (cmpl) {
1179                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1180                         cmpl = 0;
1181                 }
1182
1183                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1184                         break;
1185
1186                 mdelay(1);
1187         } while (true);
1188
1189         if (atomic_read(&txq->used))
1190                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1191                         atomic_read(&txq->used));
1192
1193         /* free posted tx for which compls will never arrive */
1194         while (atomic_read(&txq->used)) {
1195                 sent_skb = sent_skbs[txq->tail];
1196                 end_idx = txq->tail;
1197                 index_adv(&end_idx,
1198                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1199                 be_tx_compl_process(adapter, end_idx);
1200         }
1201 }
1202
1203 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1204 {
1205         struct be_queue_info *q;
1206
1207         q = &adapter->mcc_obj.q;
1208         if (q->created)
1209                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1210         be_queue_free(adapter, q);
1211
1212         q = &adapter->mcc_obj.cq;
1213         if (q->created)
1214                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1215         be_queue_free(adapter, q);
1216 }
1217
1218 /* Must be called only after TX qs are created as MCC shares TX EQ */
1219 static int be_mcc_queues_create(struct be_adapter *adapter)
1220 {
1221         struct be_queue_info *q, *cq;
1222
1223         /* Alloc MCC compl queue */
1224         cq = &adapter->mcc_obj.cq;
1225         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1226                         sizeof(struct be_mcc_compl)))
1227                 goto err;
1228
1229         /* Ask BE to create MCC compl queue; share TX's eq */
1230         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1231                 goto mcc_cq_free;
1232
1233         /* Alloc MCC queue */
1234         q = &adapter->mcc_obj.q;
1235         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1236                 goto mcc_cq_destroy;
1237
1238         /* Ask BE to create MCC queue */
1239         if (be_cmd_mccq_create(adapter, q, cq))
1240                 goto mcc_q_free;
1241
1242         return 0;
1243
1244 mcc_q_free:
1245         be_queue_free(adapter, q);
1246 mcc_cq_destroy:
1247         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1248 mcc_cq_free:
1249         be_queue_free(adapter, cq);
1250 err:
1251         return -1;
1252 }
1253
1254 static void be_tx_queues_destroy(struct be_adapter *adapter)
1255 {
1256         struct be_queue_info *q;
1257
1258         q = &adapter->tx_obj.q;
1259         if (q->created)
1260                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1261         be_queue_free(adapter, q);
1262
1263         q = &adapter->tx_obj.cq;
1264         if (q->created)
1265                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1266         be_queue_free(adapter, q);
1267
1268         /* Clear any residual events */
1269         be_eq_clean(adapter, &adapter->tx_eq);
1270
1271         q = &adapter->tx_eq.q;
1272         if (q->created)
1273                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1274         be_queue_free(adapter, q);
1275 }
1276
1277 static int be_tx_queues_create(struct be_adapter *adapter)
1278 {
1279         struct be_queue_info *eq, *q, *cq;
1280
1281         adapter->tx_eq.max_eqd = 0;
1282         adapter->tx_eq.min_eqd = 0;
1283         adapter->tx_eq.cur_eqd = 96;
1284         adapter->tx_eq.enable_aic = false;
1285         /* Alloc Tx Event queue */
1286         eq = &adapter->tx_eq.q;
1287         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1288                 return -1;
1289
1290         /* Ask BE to create Tx Event queue */
1291         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1292                 goto tx_eq_free;
1293         /* Alloc TX eth compl queue */
1294         cq = &adapter->tx_obj.cq;
1295         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1296                         sizeof(struct be_eth_tx_compl)))
1297                 goto tx_eq_destroy;
1298
1299         /* Ask BE to create Tx eth compl queue */
1300         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1301                 goto tx_cq_free;
1302
1303         /* Alloc TX eth queue */
1304         q = &adapter->tx_obj.q;
1305         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1306                 goto tx_cq_destroy;
1307
1308         /* Ask BE to create Tx eth queue */
1309         if (be_cmd_txq_create(adapter, q, cq))
1310                 goto tx_q_free;
1311         return 0;
1312
1313 tx_q_free:
1314         be_queue_free(adapter, q);
1315 tx_cq_destroy:
1316         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1317 tx_cq_free:
1318         be_queue_free(adapter, cq);
1319 tx_eq_destroy:
1320         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1321 tx_eq_free:
1322         be_queue_free(adapter, eq);
1323         return -1;
1324 }
1325
1326 static void be_rx_queues_destroy(struct be_adapter *adapter)
1327 {
1328         struct be_queue_info *q;
1329
1330         q = &adapter->rx_obj.q;
1331         if (q->created) {
1332                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1333
1334                 /* After the rxq is invalidated, wait for a grace time
1335                  * of 1ms for all dma to end and the flush compl to arrive
1336                  */
1337                 mdelay(1);
1338                 be_rx_q_clean(adapter);
1339         }
1340         be_queue_free(adapter, q);
1341
1342         q = &adapter->rx_obj.cq;
1343         if (q->created)
1344                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1345         be_queue_free(adapter, q);
1346
1347         /* Clear any residual events */
1348         be_eq_clean(adapter, &adapter->rx_eq);
1349
1350         q = &adapter->rx_eq.q;
1351         if (q->created)
1352                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1353         be_queue_free(adapter, q);
1354 }
1355
1356 static int be_rx_queues_create(struct be_adapter *adapter)
1357 {
1358         struct be_queue_info *eq, *q, *cq;
1359         int rc;
1360
1361         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1362         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1363         adapter->rx_eq.min_eqd = 0;
1364         adapter->rx_eq.cur_eqd = 0;
1365         adapter->rx_eq.enable_aic = true;
1366
1367         /* Alloc Rx Event queue */
1368         eq = &adapter->rx_eq.q;
1369         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1370                                 sizeof(struct be_eq_entry));
1371         if (rc)
1372                 return rc;
1373
1374         /* Ask BE to create Rx Event queue */
1375         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1376         if (rc)
1377                 goto rx_eq_free;
1378
1379         /* Alloc RX eth compl queue */
1380         cq = &adapter->rx_obj.cq;
1381         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1382                         sizeof(struct be_eth_rx_compl));
1383         if (rc)
1384                 goto rx_eq_destroy;
1385
1386         /* Ask BE to create Rx eth compl queue */
1387         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1388         if (rc)
1389                 goto rx_cq_free;
1390
1391         /* Alloc RX eth queue */
1392         q = &adapter->rx_obj.q;
1393         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1394         if (rc)
1395                 goto rx_cq_destroy;
1396
1397         /* Ask BE to create Rx eth queue */
1398         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1399                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1400         if (rc)
1401                 goto rx_q_free;
1402
1403         return 0;
1404 rx_q_free:
1405         be_queue_free(adapter, q);
1406 rx_cq_destroy:
1407         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1408 rx_cq_free:
1409         be_queue_free(adapter, cq);
1410 rx_eq_destroy:
1411         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1412 rx_eq_free:
1413         be_queue_free(adapter, eq);
1414         return rc;
1415 }
1416
1417 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1418 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1419 {
1420         return eq_id % 8;
1421 }
1422
1423 static irqreturn_t be_intx(int irq, void *dev)
1424 {
1425         struct be_adapter *adapter = dev;
1426         int isr;
1427
1428         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1429                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1430         if (!isr)
1431                 return IRQ_NONE;
1432
1433         event_handle(adapter, &adapter->tx_eq);
1434         event_handle(adapter, &adapter->rx_eq);
1435
1436         return IRQ_HANDLED;
1437 }
1438
1439 static irqreturn_t be_msix_rx(int irq, void *dev)
1440 {
1441         struct be_adapter *adapter = dev;
1442
1443         event_handle(adapter, &adapter->rx_eq);
1444
1445         return IRQ_HANDLED;
1446 }
1447
1448 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1449 {
1450         struct be_adapter *adapter = dev;
1451
1452         event_handle(adapter, &adapter->tx_eq);
1453
1454         return IRQ_HANDLED;
1455 }
1456
1457 static inline bool do_gro(struct be_adapter *adapter,
1458                         struct be_eth_rx_compl *rxcp)
1459 {
1460         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1461         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1462
1463         if (err)
1464                 drvr_stats(adapter)->be_rxcp_err++;
1465
1466         return (tcp_frame && !err) ? true : false;
1467 }
1468
1469 int be_poll_rx(struct napi_struct *napi, int budget)
1470 {
1471         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1472         struct be_adapter *adapter =
1473                 container_of(rx_eq, struct be_adapter, rx_eq);
1474         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1475         struct be_eth_rx_compl *rxcp;
1476         u32 work_done;
1477
1478         adapter->stats.drvr_stats.be_rx_polls++;
1479         for (work_done = 0; work_done < budget; work_done++) {
1480                 rxcp = be_rx_compl_get(adapter);
1481                 if (!rxcp)
1482                         break;
1483
1484                 if (do_gro(adapter, rxcp))
1485                         be_rx_compl_process_gro(adapter, rxcp);
1486                 else
1487                         be_rx_compl_process(adapter, rxcp);
1488
1489                 be_rx_compl_reset(rxcp);
1490         }
1491
1492         /* Refill the queue */
1493         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1494                 be_post_rx_frags(adapter);
1495
1496         /* All consumed */
1497         if (work_done < budget) {
1498                 napi_complete(napi);
1499                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1500         } else {
1501                 /* More to be consumed; continue with interrupts disabled */
1502                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1503         }
1504         return work_done;
1505 }
1506
1507 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1508  * For TX/MCC we don't honour budget; consume everything
1509  */
1510 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1511 {
1512         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1513         struct be_adapter *adapter =
1514                 container_of(tx_eq, struct be_adapter, tx_eq);
1515         struct be_queue_info *txq = &adapter->tx_obj.q;
1516         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1517         struct be_eth_tx_compl *txcp;
1518         int tx_compl = 0, mcc_compl, status = 0;
1519         u16 end_idx;
1520
1521         while ((txcp = be_tx_compl_get(tx_cq))) {
1522                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1523                                 wrb_index, txcp);
1524                 be_tx_compl_process(adapter, end_idx);
1525                 tx_compl++;
1526         }
1527
1528         mcc_compl = be_process_mcc(adapter, &status);
1529
1530         napi_complete(napi);
1531
1532         if (mcc_compl) {
1533                 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1534                 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1535         }
1536
1537         if (tx_compl) {
1538                 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1539
1540                 /* As Tx wrbs have been freed up, wake up netdev queue if
1541                  * it was stopped due to lack of tx wrbs.
1542                  */
1543                 if (netif_queue_stopped(adapter->netdev) &&
1544                         atomic_read(&txq->used) < txq->len / 2) {
1545                         netif_wake_queue(adapter->netdev);
1546                 }
1547
1548                 drvr_stats(adapter)->be_tx_events++;
1549                 drvr_stats(adapter)->be_tx_compl += tx_compl;
1550         }
1551
1552         return 1;
1553 }
1554
1555 static void be_worker(struct work_struct *work)
1556 {
1557         struct be_adapter *adapter =
1558                 container_of(work, struct be_adapter, work.work);
1559
1560         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1561
1562         /* Set EQ delay */
1563         be_rx_eqd_update(adapter);
1564
1565         be_tx_rate_update(adapter);
1566         be_rx_rate_update(adapter);
1567
1568         if (adapter->rx_post_starved) {
1569                 adapter->rx_post_starved = false;
1570                 be_post_rx_frags(adapter);
1571         }
1572
1573         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1574 }
1575
1576 static void be_msix_disable(struct be_adapter *adapter)
1577 {
1578         if (adapter->msix_enabled) {
1579                 pci_disable_msix(adapter->pdev);
1580                 adapter->msix_enabled = false;
1581         }
1582 }
1583
1584 static void be_msix_enable(struct be_adapter *adapter)
1585 {
1586         int i, status;
1587
1588         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1589                 adapter->msix_entries[i].entry = i;
1590
1591         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1592                 BE_NUM_MSIX_VECTORS);
1593         if (status == 0)
1594                 adapter->msix_enabled = true;
1595         return;
1596 }
1597
1598 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1599 {
1600         return adapter->msix_entries[
1601                         be_evt_bit_get(adapter, eq_id)].vector;
1602 }
1603
1604 static int be_request_irq(struct be_adapter *adapter,
1605                 struct be_eq_obj *eq_obj,
1606                 void *handler, char *desc)
1607 {
1608         struct net_device *netdev = adapter->netdev;
1609         int vec;
1610
1611         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1612         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1613         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1614 }
1615
1616 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1617 {
1618         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1619         free_irq(vec, adapter);
1620 }
1621
1622 static int be_msix_register(struct be_adapter *adapter)
1623 {
1624         int status;
1625
1626         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1627         if (status)
1628                 goto err;
1629
1630         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1631         if (status)
1632                 goto free_tx_irq;
1633
1634         return 0;
1635
1636 free_tx_irq:
1637         be_free_irq(adapter, &adapter->tx_eq);
1638 err:
1639         dev_warn(&adapter->pdev->dev,
1640                 "MSIX Request IRQ failed - err %d\n", status);
1641         pci_disable_msix(adapter->pdev);
1642         adapter->msix_enabled = false;
1643         return status;
1644 }
1645
1646 static int be_irq_register(struct be_adapter *adapter)
1647 {
1648         struct net_device *netdev = adapter->netdev;
1649         int status;
1650
1651         if (adapter->msix_enabled) {
1652                 status = be_msix_register(adapter);
1653                 if (status == 0)
1654                         goto done;
1655         }
1656
1657         /* INTx */
1658         netdev->irq = adapter->pdev->irq;
1659         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1660                         adapter);
1661         if (status) {
1662                 dev_err(&adapter->pdev->dev,
1663                         "INTx request IRQ failed - err %d\n", status);
1664                 return status;
1665         }
1666 done:
1667         adapter->isr_registered = true;
1668         return 0;
1669 }
1670
1671 static void be_irq_unregister(struct be_adapter *adapter)
1672 {
1673         struct net_device *netdev = adapter->netdev;
1674
1675         if (!adapter->isr_registered)
1676                 return;
1677
1678         /* INTx */
1679         if (!adapter->msix_enabled) {
1680                 free_irq(netdev->irq, adapter);
1681                 goto done;
1682         }
1683
1684         /* MSIx */
1685         be_free_irq(adapter, &adapter->tx_eq);
1686         be_free_irq(adapter, &adapter->rx_eq);
1687 done:
1688         adapter->isr_registered = false;
1689         return;
1690 }
1691
1692 static int be_open(struct net_device *netdev)
1693 {
1694         struct be_adapter *adapter = netdev_priv(netdev);
1695         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1696         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1697         bool link_up;
1698         int status;
1699         u8 mac_speed;
1700         u16 link_speed;
1701
1702         /* First time posting */
1703         be_post_rx_frags(adapter);
1704
1705         napi_enable(&rx_eq->napi);
1706         napi_enable(&tx_eq->napi);
1707
1708         be_irq_register(adapter);
1709
1710         be_intr_set(adapter, true);
1711
1712         /* The evt queues are created in unarmed state; arm them */
1713         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1714         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1715
1716         /* Rx compl queue may be in unarmed state; rearm it */
1717         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1718
1719         /* Now that interrupts are on we can process async mcc */
1720         be_async_mcc_enable(adapter);
1721
1722         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1723                         &link_speed);
1724         if (status)
1725                 goto ret_sts;
1726         be_link_status_update(adapter, link_up);
1727
1728         status = be_vid_config(adapter);
1729         if (status)
1730                 goto ret_sts;
1731
1732         status = be_cmd_set_flow_control(adapter,
1733                                         adapter->tx_fc, adapter->rx_fc);
1734         if (status)
1735                 goto ret_sts;
1736
1737         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1738 ret_sts:
1739         return status;
1740 }
1741
1742 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1743 {
1744         struct be_dma_mem cmd;
1745         int status = 0;
1746         u8 mac[ETH_ALEN];
1747
1748         memset(mac, 0, ETH_ALEN);
1749
1750         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1751         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1752         if (cmd.va == NULL)
1753                 return -1;
1754         memset(cmd.va, 0, cmd.size);
1755
1756         if (enable) {
1757                 status = pci_write_config_dword(adapter->pdev,
1758                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1759                 if (status) {
1760                         dev_err(&adapter->pdev->dev,
1761                                 "Could not enable Wake-on-lan \n");
1762                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1763                                         cmd.dma);
1764                         return status;
1765                 }
1766                 status = be_cmd_enable_magic_wol(adapter,
1767                                 adapter->netdev->dev_addr, &cmd);
1768                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1769                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1770         } else {
1771                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1772                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1773                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1774         }
1775
1776         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1777         return status;
1778 }
1779
1780 static int be_setup(struct be_adapter *adapter)
1781 {
1782         struct net_device *netdev = adapter->netdev;
1783         u32 cap_flags, en_flags;
1784         int status;
1785
1786         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1787                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1788                         BE_IF_FLAGS_PROMISCUOUS |
1789                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1790         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1791                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1792
1793         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1794                         netdev->dev_addr, false/* pmac_invalid */,
1795                         &adapter->if_handle, &adapter->pmac_id);
1796         if (status != 0)
1797                 goto do_none;
1798
1799         status = be_tx_queues_create(adapter);
1800         if (status != 0)
1801                 goto if_destroy;
1802
1803         status = be_rx_queues_create(adapter);
1804         if (status != 0)
1805                 goto tx_qs_destroy;
1806
1807         status = be_mcc_queues_create(adapter);
1808         if (status != 0)
1809                 goto rx_qs_destroy;
1810
1811         adapter->link_speed = -1;
1812
1813         return 0;
1814
1815 rx_qs_destroy:
1816         be_rx_queues_destroy(adapter);
1817 tx_qs_destroy:
1818         be_tx_queues_destroy(adapter);
1819 if_destroy:
1820         be_cmd_if_destroy(adapter, adapter->if_handle);
1821 do_none:
1822         return status;
1823 }
1824
1825 static int be_clear(struct be_adapter *adapter)
1826 {
1827         be_mcc_queues_destroy(adapter);
1828         be_rx_queues_destroy(adapter);
1829         be_tx_queues_destroy(adapter);
1830
1831         be_cmd_if_destroy(adapter, adapter->if_handle);
1832
1833         /* tell fw we're done with firing cmds */
1834         be_cmd_fw_clean(adapter);
1835         return 0;
1836 }
1837
1838 static int be_close(struct net_device *netdev)
1839 {
1840         struct be_adapter *adapter = netdev_priv(netdev);
1841         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1842         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1843         int vec;
1844
1845         cancel_delayed_work_sync(&adapter->work);
1846
1847         be_async_mcc_disable(adapter);
1848
1849         netif_stop_queue(netdev);
1850         netif_carrier_off(netdev);
1851         adapter->link_up = false;
1852
1853         be_intr_set(adapter, false);
1854
1855         if (adapter->msix_enabled) {
1856                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1857                 synchronize_irq(vec);
1858                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1859                 synchronize_irq(vec);
1860         } else {
1861                 synchronize_irq(netdev->irq);
1862         }
1863         be_irq_unregister(adapter);
1864
1865         napi_disable(&rx_eq->napi);
1866         napi_disable(&tx_eq->napi);
1867
1868         /* Wait for all pending tx completions to arrive so that
1869          * all tx skbs are freed.
1870          */
1871         be_tx_compl_clean(adapter);
1872
1873         return 0;
1874 }
1875
1876 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1877 char flash_cookie[2][16] =      {"*** SE FLAS",
1878                                 "H DIRECTORY *** "};
1879
1880 static bool be_flash_redboot(struct be_adapter *adapter,
1881                         const u8 *p, u32 img_start, int image_size,
1882                         int hdr_size)
1883 {
1884         u32 crc_offset;
1885         u8 flashed_crc[4];
1886         int status;
1887
1888         crc_offset = hdr_size + img_start + image_size - 4;
1889
1890         p += crc_offset;
1891
1892         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1893                         (img_start + image_size - 4));
1894         if (status) {
1895                 dev_err(&adapter->pdev->dev,
1896                 "could not get crc from flash, not flashing redboot\n");
1897                 return false;
1898         }
1899
1900         /*update redboot only if crc does not match*/
1901         if (!memcmp(flashed_crc, p, 4))
1902                 return false;
1903         else
1904                 return true;
1905 }
1906
1907 static int be_flash_data(struct be_adapter *adapter,
1908                         const struct firmware *fw,
1909                         struct be_dma_mem *flash_cmd, int num_of_images)
1910
1911 {
1912         int status = 0, i, filehdr_size = 0;
1913         u32 total_bytes = 0, flash_op;
1914         int num_bytes;
1915         const u8 *p = fw->data;
1916         struct be_cmd_write_flashrom *req = flash_cmd->va;
1917         struct flash_comp *pflashcomp;
1918         int num_comp;
1919
1920         struct flash_comp gen3_flash_types[9] = {
1921                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1922                         FLASH_IMAGE_MAX_SIZE_g3},
1923                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1924                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1925                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1926                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1927                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1928                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1929                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1930                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1931                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1932                         FLASH_IMAGE_MAX_SIZE_g3},
1933                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1934                         FLASH_IMAGE_MAX_SIZE_g3},
1935                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1936                         FLASH_IMAGE_MAX_SIZE_g3},
1937                 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
1938                         FLASH_NCSI_IMAGE_MAX_SIZE_g3}
1939         };
1940         struct flash_comp gen2_flash_types[8] = {
1941                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1942                         FLASH_IMAGE_MAX_SIZE_g2},
1943                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1944                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1945                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1946                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1947                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1948                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1949                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1950                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1951                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1952                         FLASH_IMAGE_MAX_SIZE_g2},
1953                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1954                         FLASH_IMAGE_MAX_SIZE_g2},
1955                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1956                          FLASH_IMAGE_MAX_SIZE_g2}
1957         };
1958
1959         if (adapter->generation == BE_GEN3) {
1960                 pflashcomp = gen3_flash_types;
1961                 filehdr_size = sizeof(struct flash_file_hdr_g3);
1962                 num_comp = 9;
1963         } else {
1964                 pflashcomp = gen2_flash_types;
1965                 filehdr_size = sizeof(struct flash_file_hdr_g2);
1966                 num_comp = 8;
1967         }
1968         for (i = 0; i < num_comp; i++) {
1969                 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
1970                                 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
1971                         continue;
1972                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1973                         (!be_flash_redboot(adapter, fw->data,
1974                          pflashcomp[i].offset, pflashcomp[i].size,
1975                          filehdr_size)))
1976                         continue;
1977                 p = fw->data;
1978                 p += filehdr_size + pflashcomp[i].offset
1979                         + (num_of_images * sizeof(struct image_hdr));
1980         if (p + pflashcomp[i].size > fw->data + fw->size)
1981                 return -1;
1982         total_bytes = pflashcomp[i].size;
1983                 while (total_bytes) {
1984                         if (total_bytes > 32*1024)
1985                                 num_bytes = 32*1024;
1986                         else
1987                                 num_bytes = total_bytes;
1988                         total_bytes -= num_bytes;
1989
1990                         if (!total_bytes)
1991                                 flash_op = FLASHROM_OPER_FLASH;
1992                         else
1993                                 flash_op = FLASHROM_OPER_SAVE;
1994                         memcpy(req->params.data_buf, p, num_bytes);
1995                         p += num_bytes;
1996                         status = be_cmd_write_flashrom(adapter, flash_cmd,
1997                                 pflashcomp[i].optype, flash_op, num_bytes);
1998                         if (status) {
1999                                 dev_err(&adapter->pdev->dev,
2000                                         "cmd to write to flash rom failed.\n");
2001                                 return -1;
2002                         }
2003                         yield();
2004                 }
2005         }
2006         return 0;
2007 }
2008
2009 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2010 {
2011         if (fhdr == NULL)
2012                 return 0;
2013         if (fhdr->build[0] == '3')
2014                 return BE_GEN3;
2015         else if (fhdr->build[0] == '2')
2016                 return BE_GEN2;
2017         else
2018                 return 0;
2019 }
2020
2021 int be_load_fw(struct be_adapter *adapter, u8 *func)
2022 {
2023         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2024         const struct firmware *fw;
2025         struct flash_file_hdr_g2 *fhdr;
2026         struct flash_file_hdr_g3 *fhdr3;
2027         struct image_hdr *img_hdr_ptr = NULL;
2028         struct be_dma_mem flash_cmd;
2029         int status, i = 0;
2030         const u8 *p;
2031
2032         strcpy(fw_file, func);
2033
2034         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2035         if (status)
2036                 goto fw_exit;
2037
2038         p = fw->data;
2039         fhdr = (struct flash_file_hdr_g2 *) p;
2040         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2041
2042         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2043         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2044                                         &flash_cmd.dma);
2045         if (!flash_cmd.va) {
2046                 status = -ENOMEM;
2047                 dev_err(&adapter->pdev->dev,
2048                         "Memory allocation failure while flashing\n");
2049                 goto fw_exit;
2050         }
2051
2052         if ((adapter->generation == BE_GEN3) &&
2053                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2054                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2055                 for (i = 0; i < fhdr3->num_imgs; i++) {
2056                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2057                                         (sizeof(struct flash_file_hdr_g3) +
2058                                         i * sizeof(struct image_hdr)));
2059                         if (img_hdr_ptr->imageid == 1) {
2060                                 status = be_flash_data(adapter, fw,
2061                                                 &flash_cmd, fhdr3->num_imgs);
2062                         }
2063
2064                 }
2065         } else if ((adapter->generation == BE_GEN2) &&
2066                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2067                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2068         } else {
2069                 dev_err(&adapter->pdev->dev,
2070                         "UFI and Interface are not compatible for flashing\n");
2071                 status = -1;
2072         }
2073
2074         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2075                                 flash_cmd.dma);
2076         if (status) {
2077                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2078                 goto fw_exit;
2079         }
2080
2081         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2082
2083 fw_exit:
2084         release_firmware(fw);
2085         return status;
2086 }
2087
2088 static struct net_device_ops be_netdev_ops = {
2089         .ndo_open               = be_open,
2090         .ndo_stop               = be_close,
2091         .ndo_start_xmit         = be_xmit,
2092         .ndo_get_stats          = be_get_stats,
2093         .ndo_set_rx_mode        = be_set_multicast_list,
2094         .ndo_set_mac_address    = be_mac_addr_set,
2095         .ndo_change_mtu         = be_change_mtu,
2096         .ndo_validate_addr      = eth_validate_addr,
2097         .ndo_vlan_rx_register   = be_vlan_register,
2098         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2099         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2100 };
2101
2102 static void be_netdev_init(struct net_device *netdev)
2103 {
2104         struct be_adapter *adapter = netdev_priv(netdev);
2105
2106         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2107                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2108                 NETIF_F_GRO;
2109
2110         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2111
2112         netdev->flags |= IFF_MULTICAST;
2113
2114         adapter->rx_csum = true;
2115
2116         /* Default settings for Rx and Tx flow control */
2117         adapter->rx_fc = true;
2118         adapter->tx_fc = true;
2119
2120         netif_set_gso_max_size(netdev, 65535);
2121
2122         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2123
2124         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2125
2126         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2127                 BE_NAPI_WEIGHT);
2128         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2129                 BE_NAPI_WEIGHT);
2130
2131         netif_carrier_off(netdev);
2132         netif_stop_queue(netdev);
2133 }
2134
2135 static void be_unmap_pci_bars(struct be_adapter *adapter)
2136 {
2137         if (adapter->csr)
2138                 iounmap(adapter->csr);
2139         if (adapter->db)
2140                 iounmap(adapter->db);
2141         if (adapter->pcicfg)
2142                 iounmap(adapter->pcicfg);
2143 }
2144
2145 static int be_map_pci_bars(struct be_adapter *adapter)
2146 {
2147         u8 __iomem *addr;
2148         int pcicfg_reg;
2149
2150         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2151                         pci_resource_len(adapter->pdev, 2));
2152         if (addr == NULL)
2153                 return -ENOMEM;
2154         adapter->csr = addr;
2155
2156         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2157                         128 * 1024);
2158         if (addr == NULL)
2159                 goto pci_map_err;
2160         adapter->db = addr;
2161
2162         if (adapter->generation == BE_GEN2)
2163                 pcicfg_reg = 1;
2164         else
2165                 pcicfg_reg = 0;
2166
2167         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2168                         pci_resource_len(adapter->pdev, pcicfg_reg));
2169         if (addr == NULL)
2170                 goto pci_map_err;
2171         adapter->pcicfg = addr;
2172
2173         return 0;
2174 pci_map_err:
2175         be_unmap_pci_bars(adapter);
2176         return -ENOMEM;
2177 }
2178
2179
2180 static void be_ctrl_cleanup(struct be_adapter *adapter)
2181 {
2182         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2183
2184         be_unmap_pci_bars(adapter);
2185
2186         if (mem->va)
2187                 pci_free_consistent(adapter->pdev, mem->size,
2188                         mem->va, mem->dma);
2189
2190         mem = &adapter->mc_cmd_mem;
2191         if (mem->va)
2192                 pci_free_consistent(adapter->pdev, mem->size,
2193                         mem->va, mem->dma);
2194 }
2195
2196 static int be_ctrl_init(struct be_adapter *adapter)
2197 {
2198         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2199         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2200         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2201         int status;
2202
2203         status = be_map_pci_bars(adapter);
2204         if (status)
2205                 goto done;
2206
2207         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2208         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2209                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2210         if (!mbox_mem_alloc->va) {
2211                 status = -ENOMEM;
2212                 goto unmap_pci_bars;
2213         }
2214
2215         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2216         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2217         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2218         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2219
2220         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2221         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2222                         &mc_cmd_mem->dma);
2223         if (mc_cmd_mem->va == NULL) {
2224                 status = -ENOMEM;
2225                 goto free_mbox;
2226         }
2227         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2228
2229         spin_lock_init(&adapter->mbox_lock);
2230         spin_lock_init(&adapter->mcc_lock);
2231         spin_lock_init(&adapter->mcc_cq_lock);
2232
2233         pci_save_state(adapter->pdev);
2234         return 0;
2235
2236 free_mbox:
2237         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2238                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2239
2240 unmap_pci_bars:
2241         be_unmap_pci_bars(adapter);
2242
2243 done:
2244         return status;
2245 }
2246
2247 static void be_stats_cleanup(struct be_adapter *adapter)
2248 {
2249         struct be_stats_obj *stats = &adapter->stats;
2250         struct be_dma_mem *cmd = &stats->cmd;
2251
2252         if (cmd->va)
2253                 pci_free_consistent(adapter->pdev, cmd->size,
2254                         cmd->va, cmd->dma);
2255 }
2256
2257 static int be_stats_init(struct be_adapter *adapter)
2258 {
2259         struct be_stats_obj *stats = &adapter->stats;
2260         struct be_dma_mem *cmd = &stats->cmd;
2261
2262         cmd->size = sizeof(struct be_cmd_req_get_stats);
2263         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2264         if (cmd->va == NULL)
2265                 return -1;
2266         memset(cmd->va, 0, cmd->size);
2267         return 0;
2268 }
2269
2270 static void __devexit be_remove(struct pci_dev *pdev)
2271 {
2272         struct be_adapter *adapter = pci_get_drvdata(pdev);
2273
2274         if (!adapter)
2275                 return;
2276
2277         unregister_netdev(adapter->netdev);
2278
2279         be_clear(adapter);
2280
2281         be_stats_cleanup(adapter);
2282
2283         be_ctrl_cleanup(adapter);
2284
2285         be_msix_disable(adapter);
2286
2287         pci_set_drvdata(pdev, NULL);
2288         pci_release_regions(pdev);
2289         pci_disable_device(pdev);
2290
2291         free_netdev(adapter->netdev);
2292 }
2293
2294 static int be_get_config(struct be_adapter *adapter)
2295 {
2296         int status;
2297         u8 mac[ETH_ALEN];
2298
2299         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2300         if (status)
2301                 return status;
2302
2303         status = be_cmd_query_fw_cfg(adapter,
2304                                 &adapter->port_num, &adapter->cap);
2305         if (status)
2306                 return status;
2307
2308         memset(mac, 0, ETH_ALEN);
2309         status = be_cmd_mac_addr_query(adapter, mac,
2310                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2311         if (status)
2312                 return status;
2313
2314         if (!is_valid_ether_addr(mac))
2315                 return -EADDRNOTAVAIL;
2316
2317         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2318         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2319
2320         if (adapter->cap & 0x400)
2321                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2322         else
2323                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2324
2325         return 0;
2326 }
2327
2328 static int __devinit be_probe(struct pci_dev *pdev,
2329                         const struct pci_device_id *pdev_id)
2330 {
2331         int status = 0;
2332         struct be_adapter *adapter;
2333         struct net_device *netdev;
2334
2335         status = pci_enable_device(pdev);
2336         if (status)
2337                 goto do_none;
2338
2339         status = pci_request_regions(pdev, DRV_NAME);
2340         if (status)
2341                 goto disable_dev;
2342         pci_set_master(pdev);
2343
2344         netdev = alloc_etherdev(sizeof(struct be_adapter));
2345         if (netdev == NULL) {
2346                 status = -ENOMEM;
2347                 goto rel_reg;
2348         }
2349         adapter = netdev_priv(netdev);
2350
2351         switch (pdev->device) {
2352         case BE_DEVICE_ID1:
2353         case OC_DEVICE_ID1:
2354                 adapter->generation = BE_GEN2;
2355                 break;
2356         case BE_DEVICE_ID2:
2357         case OC_DEVICE_ID2:
2358                 adapter->generation = BE_GEN3;
2359                 break;
2360         default:
2361                 adapter->generation = 0;
2362         }
2363
2364         adapter->pdev = pdev;
2365         pci_set_drvdata(pdev, adapter);
2366         adapter->netdev = netdev;
2367         be_netdev_init(netdev);
2368         SET_NETDEV_DEV(netdev, &pdev->dev);
2369
2370         be_msix_enable(adapter);
2371
2372         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2373         if (!status) {
2374                 netdev->features |= NETIF_F_HIGHDMA;
2375         } else {
2376                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2377                 if (status) {
2378                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2379                         goto free_netdev;
2380                 }
2381         }
2382
2383         status = be_ctrl_init(adapter);
2384         if (status)
2385                 goto free_netdev;
2386
2387         /* sync up with fw's ready state */
2388         status = be_cmd_POST(adapter);
2389         if (status)
2390                 goto ctrl_clean;
2391
2392         /* tell fw we're ready to fire cmds */
2393         status = be_cmd_fw_init(adapter);
2394         if (status)
2395                 goto ctrl_clean;
2396
2397         status = be_cmd_reset_function(adapter);
2398         if (status)
2399                 goto ctrl_clean;
2400
2401         status = be_stats_init(adapter);
2402         if (status)
2403                 goto ctrl_clean;
2404
2405         status = be_get_config(adapter);
2406         if (status)
2407                 goto stats_clean;
2408
2409         INIT_DELAYED_WORK(&adapter->work, be_worker);
2410
2411         status = be_setup(adapter);
2412         if (status)
2413                 goto stats_clean;
2414
2415         status = register_netdev(netdev);
2416         if (status != 0)
2417                 goto unsetup;
2418
2419         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2420         return 0;
2421
2422 unsetup:
2423         be_clear(adapter);
2424 stats_clean:
2425         be_stats_cleanup(adapter);
2426 ctrl_clean:
2427         be_ctrl_cleanup(adapter);
2428 free_netdev:
2429         be_msix_disable(adapter);
2430         free_netdev(adapter->netdev);
2431         pci_set_drvdata(pdev, NULL);
2432 rel_reg:
2433         pci_release_regions(pdev);
2434 disable_dev:
2435         pci_disable_device(pdev);
2436 do_none:
2437         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2438         return status;
2439 }
2440
2441 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2442 {
2443         struct be_adapter *adapter = pci_get_drvdata(pdev);
2444         struct net_device *netdev =  adapter->netdev;
2445
2446         if (adapter->wol)
2447                 be_setup_wol(adapter, true);
2448
2449         netif_device_detach(netdev);
2450         if (netif_running(netdev)) {
2451                 rtnl_lock();
2452                 be_close(netdev);
2453                 rtnl_unlock();
2454         }
2455         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2456         be_clear(adapter);
2457
2458         pci_save_state(pdev);
2459         pci_disable_device(pdev);
2460         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2461         return 0;
2462 }
2463
2464 static int be_resume(struct pci_dev *pdev)
2465 {
2466         int status = 0;
2467         struct be_adapter *adapter = pci_get_drvdata(pdev);
2468         struct net_device *netdev =  adapter->netdev;
2469
2470         netif_device_detach(netdev);
2471
2472         status = pci_enable_device(pdev);
2473         if (status)
2474                 return status;
2475
2476         pci_set_power_state(pdev, 0);
2477         pci_restore_state(pdev);
2478
2479         /* tell fw we're ready to fire cmds */
2480         status = be_cmd_fw_init(adapter);
2481         if (status)
2482                 return status;
2483
2484         be_setup(adapter);
2485         if (netif_running(netdev)) {
2486                 rtnl_lock();
2487                 be_open(netdev);
2488                 rtnl_unlock();
2489         }
2490         netif_device_attach(netdev);
2491
2492         if (adapter->wol)
2493                 be_setup_wol(adapter, false);
2494         return 0;
2495 }
2496
2497 /*
2498  * An FLR will stop BE from DMAing any data.
2499  */
2500 static void be_shutdown(struct pci_dev *pdev)
2501 {
2502         struct be_adapter *adapter = pci_get_drvdata(pdev);
2503         struct net_device *netdev =  adapter->netdev;
2504
2505         netif_device_detach(netdev);
2506
2507         be_cmd_reset_function(adapter);
2508
2509         if (adapter->wol)
2510                 be_setup_wol(adapter, true);
2511
2512         pci_disable_device(pdev);
2513
2514         return;
2515 }
2516
2517 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2518                                 pci_channel_state_t state)
2519 {
2520         struct be_adapter *adapter = pci_get_drvdata(pdev);
2521         struct net_device *netdev =  adapter->netdev;
2522
2523         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2524
2525         adapter->eeh_err = true;
2526
2527         netif_device_detach(netdev);
2528
2529         if (netif_running(netdev)) {
2530                 rtnl_lock();
2531                 be_close(netdev);
2532                 rtnl_unlock();
2533         }
2534         be_clear(adapter);
2535
2536         if (state == pci_channel_io_perm_failure)
2537                 return PCI_ERS_RESULT_DISCONNECT;
2538
2539         pci_disable_device(pdev);
2540
2541         return PCI_ERS_RESULT_NEED_RESET;
2542 }
2543
2544 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2545 {
2546         struct be_adapter *adapter = pci_get_drvdata(pdev);
2547         int status;
2548
2549         dev_info(&adapter->pdev->dev, "EEH reset\n");
2550         adapter->eeh_err = false;
2551
2552         status = pci_enable_device(pdev);
2553         if (status)
2554                 return PCI_ERS_RESULT_DISCONNECT;
2555
2556         pci_set_master(pdev);
2557         pci_set_power_state(pdev, 0);
2558         pci_restore_state(pdev);
2559
2560         /* Check if card is ok and fw is ready */
2561         status = be_cmd_POST(adapter);
2562         if (status)
2563                 return PCI_ERS_RESULT_DISCONNECT;
2564
2565         return PCI_ERS_RESULT_RECOVERED;
2566 }
2567
2568 static void be_eeh_resume(struct pci_dev *pdev)
2569 {
2570         int status = 0;
2571         struct be_adapter *adapter = pci_get_drvdata(pdev);
2572         struct net_device *netdev =  adapter->netdev;
2573
2574         dev_info(&adapter->pdev->dev, "EEH resume\n");
2575
2576         pci_save_state(pdev);
2577
2578         /* tell fw we're ready to fire cmds */
2579         status = be_cmd_fw_init(adapter);
2580         if (status)
2581                 goto err;
2582
2583         status = be_setup(adapter);
2584         if (status)
2585                 goto err;
2586
2587         if (netif_running(netdev)) {
2588                 status = be_open(netdev);
2589                 if (status)
2590                         goto err;
2591         }
2592         netif_device_attach(netdev);
2593         return;
2594 err:
2595         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2596         return;
2597 }
2598
2599 static struct pci_error_handlers be_eeh_handlers = {
2600         .error_detected = be_eeh_err_detected,
2601         .slot_reset = be_eeh_reset,
2602         .resume = be_eeh_resume,
2603 };
2604
2605 static struct pci_driver be_driver = {
2606         .name = DRV_NAME,
2607         .id_table = be_dev_ids,
2608         .probe = be_probe,
2609         .remove = be_remove,
2610         .suspend = be_suspend,
2611         .resume = be_resume,
2612         .shutdown = be_shutdown,
2613         .err_handler = &be_eeh_handlers
2614 };
2615
2616 static int __init be_init_module(void)
2617 {
2618         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2619             rx_frag_size != 2048) {
2620                 printk(KERN_WARNING DRV_NAME
2621                         " : Module param rx_frag_size must be 2048/4096/8192."
2622                         " Using 2048\n");
2623                 rx_frag_size = 2048;
2624         }
2625
2626         return pci_register_driver(&be_driver);
2627 }
2628 module_init(be_init_module);
2629
2630 static void __exit be_exit_module(void)
2631 {
2632         pci_unregister_driver(&be_driver);
2633 }
2634 module_exit(be_exit_module);