drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2009 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, 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 = port_stats->rx_total_frames;
 163         dev_stats->tx_packets = port_stats->tx_unicastframes +
 164                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 165         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 166                                 (u64) port_stats->rx_bytes_lsd;
 167         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 168                                 (u64) port_stats->tx_bytes_lsd;
 169
 170         /* bad pkts received */
 171         dev_stats->rx_errors = port_stats->rx_crc_errors +
 172                 port_stats->rx_alignment_symbol_errors +
 173                 port_stats->rx_in_range_errors +
 174                 port_stats->rx_out_range_errors +
 175                 port_stats->rx_frame_too_long +
 176                 port_stats->rx_dropped_too_small +
 177                 port_stats->rx_dropped_too_short +
 178                 port_stats->rx_dropped_header_too_small +
 179                 port_stats->rx_dropped_tcp_length +
 180                 port_stats->rx_dropped_runt +
 181                 port_stats->rx_tcp_checksum_errs +
 182                 port_stats->rx_ip_checksum_errs +
 183                 port_stats->rx_udp_checksum_errs;
 184
 185         /*  no space in linux buffers: best possible approximation */
 186         dev_stats->rx_dropped =
 187                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 188
 189         /* detailed rx errors */
 190         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 191                 port_stats->rx_out_range_errors +
 192                 port_stats->rx_frame_too_long;
 193
 194         /* receive ring buffer overflow */
 195         dev_stats->rx_over_errors = 0;
 196
 197         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 198
 199         /* frame alignment errors */
 200         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 201
 202         /* receiver fifo overrun */
 203         /* drops_no_pbuf is no per i/f, it's per BE card */
 204         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 205                                         port_stats->rx_input_fifo_overflow +
 206                                         rxf_stats->rx_drops_no_pbuf;
 207         /* receiver missed packetd */
 208         dev_stats->rx_missed_errors = 0;
 209
 210         /*  packet transmit problems */
 211         dev_stats->tx_errors = 0;
 212
 213         /* no space available in linux */
 214         dev_stats->tx_dropped = 0;
 215
 216         dev_stats->multicast = port_stats->rx_multicast_frames;
 217         dev_stats->collisions = 0;
 218
 219         /* detailed tx_errors */
 220         dev_stats->tx_aborted_errors = 0;
 221         dev_stats->tx_carrier_errors = 0;
 222         dev_stats->tx_fifo_errors = 0;
 223         dev_stats->tx_heartbeat_errors = 0;
 224         dev_stats->tx_window_errors = 0;
 225 }
 226
 227 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 228 {
 229         struct net_device *netdev = adapter->netdev;
 230
 231         /* If link came up or went down */
 232         if (adapter->link_up != link_up) {
 233                 adapter->link_speed = -1;
 234                 if (link_up) {
 235                         netif_start_queue(netdev);
 236                         netif_carrier_on(netdev);
 237                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 238                 } else {
 239                         netif_stop_queue(netdev);
 240                         netif_carrier_off(netdev);
 241                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 242                 }
 243                 adapter->link_up = link_up;
 244         }
 245 }
 246
 247 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 248 static void be_rx_eqd_update(struct be_adapter *adapter)
 249 {
 250         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 251         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 252         ulong now = jiffies;
 253         u32 eqd;
 254
 255         if (!rx_eq->enable_aic)
 256                 return;
 257
 258         /* Wrapped around */
 259         if (time_before(now, stats->rx_fps_jiffies)) {
 260                 stats->rx_fps_jiffies = now;
 261                 return;
 262         }
 263
 264         /* Update once a second */
 265         if ((now - stats->rx_fps_jiffies) < HZ)
 266                 return;
 267
 268         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 269                         ((now - stats->rx_fps_jiffies) / HZ);
 270
 271         stats->rx_fps_jiffies = now;
 272         stats->be_prev_rx_frags = stats->be_rx_frags;
 273         eqd = stats->be_rx_fps / 110000;
 274         eqd = eqd << 3;
 275         if (eqd > rx_eq->max_eqd)
 276                 eqd = rx_eq->max_eqd;
 277         if (eqd < rx_eq->min_eqd)
 278                 eqd = rx_eq->min_eqd;
 279         if (eqd < 10)
 280                 eqd = 0;
 281         if (eqd != rx_eq->cur_eqd)
 282                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 283
 284         rx_eq->cur_eqd = eqd;
 285 }
 286
 287 static struct net_device_stats *be_get_stats(struct net_device *dev)
 288 {
 289         return &dev->stats;
 290 }
 291
 292 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 293 {
 294         u64 rate = bytes;
 295
 296         do_div(rate, ticks / HZ);
 297         rate <<= 3;                     /* bytes/sec -> bits/sec */
 298         do_div(rate, 1000000ul);        /* MB/Sec */
 299
 300         return rate;
 301 }
 302
 303 static void be_tx_rate_update(struct be_adapter *adapter)
 304 {
 305         struct be_drvr_stats *stats = drvr_stats(adapter);
 306         ulong now = jiffies;
 307
 308         /* Wrapped around? */
 309         if (time_before(now, stats->be_tx_jiffies)) {
 310                 stats->be_tx_jiffies = now;
 311                 return;
 312         }
 313
 314         /* Update tx rate once in two seconds */
 315         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 316                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 317                                                   - stats->be_tx_bytes_prev,
 318                                                  now - stats->be_tx_jiffies);
 319                 stats->be_tx_jiffies = now;
 320                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 321         }
 322 }
 323
 324 static void be_tx_stats_update(struct be_adapter *adapter,
 325                         u32 wrb_cnt, u32 copied, bool stopped)
 326 {
 327         struct be_drvr_stats *stats = drvr_stats(adapter);
 328         stats->be_tx_reqs++;
 329         stats->be_tx_wrbs += wrb_cnt;
 330         stats->be_tx_bytes += copied;
 331         if (stopped)
 332                 stats->be_tx_stops++;
 333 }
 334
 335 /* Determine number of WRB entries needed to xmit data in an skb */
 336 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 337 {
 338         int cnt = (skb->len > skb->data_len);
 339
 340         cnt += skb_shinfo(skb)->nr_frags;
 341
 342         /* to account for hdr wrb */
 343         cnt++;
 344         if (cnt & 1) {
 345                 /* add a dummy to make it an even num */
 346                 cnt++;
 347                 *dummy = true;
 348         } else
 349                 *dummy = false;
 350         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 351         return cnt;
 352 }
 353
 354 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 355 {
 356         wrb->frag_pa_hi = upper_32_bits(addr);
 357         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 358         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 359 }
 360
 361 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 362                 bool vlan, u32 wrb_cnt, u32 len)
 363 {
 364         memset(hdr, 0, sizeof(*hdr));
 365
 366         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 367
 368         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 369                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 371                         hdr, skb_shinfo(skb)->gso_size);
 372         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 373                 if (is_tcp_pkt(skb))
 374                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 375                 else if (is_udp_pkt(skb))
 376                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 377         }
 378
 379         if (vlan && vlan_tx_tag_present(skb)) {
 380                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 381                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 382                         hdr, vlan_tx_tag_get(skb));
 383         }
 384
 385         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 386         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 387         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 388         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 389 }
 390
 391
 392 static int make_tx_wrbs(struct be_adapter *adapter,
 393                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 394 {
 395         u64 busaddr;
 396         u32 i, copied = 0;
 397         struct pci_dev *pdev = adapter->pdev;
 398         struct sk_buff *first_skb = skb;
 399         struct be_queue_info *txq = &adapter->tx_obj.q;
 400         struct be_eth_wrb *wrb;
 401         struct be_eth_hdr_wrb *hdr;
 402
 403         hdr = queue_head_node(txq);
 404         atomic_add(wrb_cnt, &txq->used);
 405         queue_head_inc(txq);
 406
 407         if (skb->len > skb->data_len) {
 408                 int len = skb->len - skb->data_len;
 409                 busaddr = pci_map_single(pdev, skb->data, len,
 410                                          PCI_DMA_TODEVICE);
 411                 wrb = queue_head_node(txq);
 412                 wrb_fill(wrb, busaddr, len);
 413                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 414                 queue_head_inc(txq);
 415                 copied += len;
 416         }
 417
 418         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 419                 struct skb_frag_struct *frag =
 420                         &skb_shinfo(skb)->frags[i];
 421                 busaddr = pci_map_page(pdev, frag->page,
 422                                        frag->page_offset,
 423                                        frag->size, PCI_DMA_TODEVICE);
 424                 wrb = queue_head_node(txq);
 425                 wrb_fill(wrb, busaddr, frag->size);
 426                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 427                 queue_head_inc(txq);
 428                 copied += frag->size;
 429         }
 430
 431         if (dummy_wrb) {
 432                 wrb = queue_head_node(txq);
 433                 wrb_fill(wrb, 0, 0);
 434                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 435                 queue_head_inc(txq);
 436         }
 437
 438         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 439                 wrb_cnt, copied);
 440         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 441
 442         return copied;
 443 }
 444
 445 static netdev_tx_t be_xmit(struct sk_buff *skb,
 446                         struct net_device *netdev)
 447 {
 448         struct be_adapter *adapter = netdev_priv(netdev);
 449         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 450         struct be_queue_info *txq = &tx_obj->q;
 451         u32 wrb_cnt = 0, copied = 0;
 452         u32 start = txq->head;
 453         bool dummy_wrb, stopped = false;
 454
 455         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 456
 457         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 458         if (copied) {
 459                 /* record the sent skb in the sent_skb table */
 460                 BUG_ON(tx_obj->sent_skb_list[start]);
 461                 tx_obj->sent_skb_list[start] = skb;
 462
 463                 /* Ensure txq has space for the next skb; Else stop the queue
 464                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 465                  * tx compls of the current transmit which'll wake up the queue
 466                  */
 467                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 468                                                                 txq->len) {
 469                         netif_stop_queue(netdev);
 470                         stopped = true;
 471                 }
 472
 473                 be_txq_notify(adapter, txq->id, wrb_cnt);
 474
 475                 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 476         } else {
 477                 txq->head = start;
 478                 dev_kfree_skb_any(skb);
 479         }
 480         return NETDEV_TX_OK;
 481 }
 482
 483 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 484 {
 485         struct be_adapter *adapter = netdev_priv(netdev);
 486         if (new_mtu < BE_MIN_MTU ||
 487                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 488                                         (ETH_HLEN + ETH_FCS_LEN))) {
 489                 dev_info(&adapter->pdev->dev,
 490                         "MTU must be between %d and %d bytes\n",
 491                         BE_MIN_MTU,
 492                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 493                 return -EINVAL;
 494         }
 495         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 496                         netdev->mtu, new_mtu);
 497         netdev->mtu = new_mtu;
 498         return 0;
 499 }
 500
 501 /*
 502  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 503  * If the user configures more, place BE in vlan promiscuous mode.
 504  */
 505 static int be_vid_config(struct be_adapter *adapter)
 506 {
 507         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 508         u16 ntags = 0, i;
 509         int status = 0;
 510
 511         if (adapter->vlans_added <= adapter->max_vlans)  {
 512                 /* Construct VLAN Table to give to HW */
 513                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 514                         if (adapter->vlan_tag[i]) {
 515                                 vtag[ntags] = cpu_to_le16(i);
 516                                 ntags++;
 517                         }
 518                 }
 519                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 520                                         vtag, ntags, 1, 0);
 521         } else {
 522                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 523                                         NULL, 0, 1, 1);
 524         }
 525         return status;
 526 }
 527
 528 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 529 {
 530         struct be_adapter *adapter = netdev_priv(netdev);
 531         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 532         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 533
 534         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 535         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 536         adapter->vlan_grp = grp;
 537         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 538         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 539 }
 540
 541 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 542 {
 543         struct be_adapter *adapter = netdev_priv(netdev);
 544
 545         adapter->vlan_tag[vid] = 1;
 546         adapter->vlans_added++;
 547         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 548                 be_vid_config(adapter);
 549 }
 550
 551 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 552 {
 553         struct be_adapter *adapter = netdev_priv(netdev);
 554
 555         adapter->vlan_tag[vid] = 0;
 556         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 557         adapter->vlans_added--;
 558         if (adapter->vlans_added <= adapter->max_vlans)
 559                 be_vid_config(adapter);
 560 }
 561
 562 static void be_set_multicast_list(struct net_device *netdev)
 563 {
 564         struct be_adapter *adapter = netdev_priv(netdev);
 565
 566         if (netdev->flags & IFF_PROMISC) {
 567                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 568                 adapter->promiscuous = true;
 569                 goto done;
 570         }
 571
 572         /* BE was previously in promiscous mode; disable it */
 573         if (adapter->promiscuous) {
 574                 adapter->promiscuous = false;
 575                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 576         }
 577
 578         /* Enable multicast promisc if num configured exceeds what we support */
 579         if (netdev->flags & IFF_ALLMULTI ||
 580             netdev_mc_count(netdev) > BE_MAX_MC) {
 581                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
 582                                 &adapter->mc_cmd_mem);
 583                 goto done;
 584         }
 585
 586         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 587                 netdev_mc_count(netdev), &adapter->mc_cmd_mem);
 588 done:
 589         return;
 590 }
 591
 592 static void be_rx_rate_update(struct be_adapter *adapter)
 593 {
 594         struct be_drvr_stats *stats = drvr_stats(adapter);
 595         ulong now = jiffies;
 596
 597         /* Wrapped around */
 598         if (time_before(now, stats->be_rx_jiffies)) {
 599                 stats->be_rx_jiffies = now;
 600                 return;
 601         }
 602
 603         /* Update the rate once in two seconds */
 604         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 605                 return;
 606
 607         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 608                                           - stats->be_rx_bytes_prev,
 609                                          now - stats->be_rx_jiffies);
 610         stats->be_rx_jiffies = now;
 611         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 612 }
 613
 614 static void be_rx_stats_update(struct be_adapter *adapter,
 615                 u32 pktsize, u16 numfrags)
 616 {
 617         struct be_drvr_stats *stats = drvr_stats(adapter);
 618
 619         stats->be_rx_compl++;
 620         stats->be_rx_frags += numfrags;
 621         stats->be_rx_bytes += pktsize;
 622 }
 623
 624 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 625 {
 626         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 627
 628         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 629         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 630         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 631         if (ip_version) {
 632                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 633                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 634         }
 635         ipv6_chk = (ip_version && (tcpf || udpf));
 636
 637         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 638 }
 639
 640 static struct be_rx_page_info *
 641 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 642 {
 643         struct be_rx_page_info *rx_page_info;
 644         struct be_queue_info *rxq = &adapter->rx_obj.q;
 645
 646         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 647         BUG_ON(!rx_page_info->page);
 648
 649         if (rx_page_info->last_page_user) {
 650                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 651                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 652                 rx_page_info->last_page_user = false;
 653         }
 654
 655         atomic_dec(&rxq->used);
 656         return rx_page_info;
 657 }
 658
 659 /* Throwaway the data in the Rx completion */
 660 static void be_rx_compl_discard(struct be_adapter *adapter,
 661                         struct be_eth_rx_compl *rxcp)
 662 {
 663         struct be_queue_info *rxq = &adapter->rx_obj.q;
 664         struct be_rx_page_info *page_info;
 665         u16 rxq_idx, i, num_rcvd;
 666
 667         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 668         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 669
 670         for (i = 0; i < num_rcvd; i++) {
 671                 page_info = get_rx_page_info(adapter, rxq_idx);
 672                 put_page(page_info->page);
 673                 memset(page_info, 0, sizeof(*page_info));
 674                 index_inc(&rxq_idx, rxq->len);
 675         }
 676 }
 677
 678 /*
 679  * skb_fill_rx_data forms a complete skb for an ether frame
 680  * indicated by rxcp.
 681  */
 682 static void skb_fill_rx_data(struct be_adapter *adapter,
 683                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
 684                         u16 num_rcvd)
 685 {
 686         struct be_queue_info *rxq = &adapter->rx_obj.q;
 687         struct be_rx_page_info *page_info;
 688         u16 rxq_idx, i, j;
 689         u32 pktsize, hdr_len, curr_frag_len, size;
 690         u8 *start;
 691
 692         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 693         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 694
 695         page_info = get_rx_page_info(adapter, rxq_idx);
 696
 697         start = page_address(page_info->page) + page_info->page_offset;
 698         prefetch(start);
 699
 700         /* Copy data in the first descriptor of this completion */
 701         curr_frag_len = min(pktsize, rx_frag_size);
 702
 703         /* Copy the header portion into skb_data */
 704         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 705         memcpy(skb->data, start, hdr_len);
 706         skb->len = curr_frag_len;
 707         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 708                 /* Complete packet has now been moved to data */
 709                 put_page(page_info->page);
 710                 skb->data_len = 0;
 711                 skb->tail += curr_frag_len;
 712         } else {
 713                 skb_shinfo(skb)->nr_frags = 1;
 714                 skb_shinfo(skb)->frags[0].page = page_info->page;
 715                 skb_shinfo(skb)->frags[0].page_offset =
 716                                         page_info->page_offset + hdr_len;
 717                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 718                 skb->data_len = curr_frag_len - hdr_len;
 719                 skb->tail += hdr_len;
 720         }
 721         page_info->page = NULL;
 722
 723         if (pktsize <= rx_frag_size) {
 724                 BUG_ON(num_rcvd != 1);
 725                 goto done;
 726         }
 727
 728         /* More frags present for this completion */
 729         size = pktsize;
 730         for (i = 1, j = 0; i < num_rcvd; i++) {
 731                 size -= curr_frag_len;
 732                 index_inc(&rxq_idx, rxq->len);
 733                 page_info = get_rx_page_info(adapter, rxq_idx);
 734
 735                 curr_frag_len = min(size, rx_frag_size);
 736
 737                 /* Coalesce all frags from the same physical page in one slot */
 738                 if (page_info->page_offset == 0) {
 739                         /* Fresh page */
 740                         j++;
 741                         skb_shinfo(skb)->frags[j].page = page_info->page;
 742                         skb_shinfo(skb)->frags[j].page_offset =
 743                                                         page_info->page_offset;
 744                         skb_shinfo(skb)->frags[j].size = 0;
 745                         skb_shinfo(skb)->nr_frags++;
 746                 } else {
 747                         put_page(page_info->page);
 748                 }
 749
 750                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 751                 skb->len += curr_frag_len;
 752                 skb->data_len += curr_frag_len;
 753
 754                 page_info->page = NULL;
 755         }
 756         BUG_ON(j > MAX_SKB_FRAGS);
 757
 758 done:
 759         be_rx_stats_update(adapter, pktsize, num_rcvd);
 760         return;
 761 }
 762
 763 /* Process the RX completion indicated by rxcp when GRO is disabled */
 764 static void be_rx_compl_process(struct be_adapter *adapter,
 765                         struct be_eth_rx_compl *rxcp)
 766 {
 767         struct sk_buff *skb;
 768         u32 vlanf, vid;
 769         u16 num_rcvd;
 770         u8 vtm;
 771
 772         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 773         /* Is it a flush compl that has no data */
 774         if (unlikely(num_rcvd == 0))
 775                 return;
 776
 777         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 778         if (unlikely(!skb)) {
 779                 if (net_ratelimit())
 780                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 781                 be_rx_compl_discard(adapter, rxcp);
 782                 return;
 783         }
 784
 785         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 786
 787         if (do_pkt_csum(rxcp, adapter->rx_csum))
 788                 skb->ip_summed = CHECKSUM_NONE;
 789         else
 790                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 791
 792         skb->truesize = skb->len + sizeof(struct sk_buff);
 793         skb->protocol = eth_type_trans(skb, adapter->netdev);
 794         skb->dev = adapter->netdev;
 795
 796         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 797         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 798
 799         /* vlanf could be wrongly set in some cards.
 800          * ignore if vtm is not set */
 801         if ((adapter->cap & 0x400) && !vtm)
 802                 vlanf = 0;
 803
 804         if (unlikely(vlanf)) {
 805                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 806                         kfree_skb(skb);
 807                         return;
 808                 }
 809                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 810                 vid = be16_to_cpu(vid);
 811                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 812         } else {
 813                 netif_receive_skb(skb);
 814         }
 815
 816         return;
 817 }
 818
 819 /* Process the RX completion indicated by rxcp when GRO is enabled */
 820 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 821                         struct be_eth_rx_compl *rxcp)
 822 {
 823         struct be_rx_page_info *page_info;
 824         struct sk_buff *skb = NULL;
 825         struct be_queue_info *rxq = &adapter->rx_obj.q;
 826         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 827         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 828         u16 i, rxq_idx = 0, vid, j;
 829         u8 vtm;
 830
 831         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 832         /* Is it a flush compl that has no data */
 833         if (unlikely(num_rcvd == 0))
 834                 return;
 835
 836         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 837         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 838         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 839         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 840
 841         /* vlanf could be wrongly set in some cards.
 842          * ignore if vtm is not set */
 843         if ((adapter->cap & 0x400) && !vtm)
 844                 vlanf = 0;
 845
 846         skb = napi_get_frags(&eq_obj->napi);
 847         if (!skb) {
 848                 be_rx_compl_discard(adapter, rxcp);
 849                 return;
 850         }
 851
 852         remaining = pkt_size;
 853         for (i = 0, j = -1; i < num_rcvd; i++) {
 854                 page_info = get_rx_page_info(adapter, rxq_idx);
 855
 856                 curr_frag_len = min(remaining, rx_frag_size);
 857
 858                 /* Coalesce all frags from the same physical page in one slot */
 859                 if (i == 0 || page_info->page_offset == 0) {
 860                         /* First frag or Fresh page */
 861                         j++;
 862                         skb_shinfo(skb)->frags[j].page = page_info->page;
 863                         skb_shinfo(skb)->frags[j].page_offset =
 864                                                         page_info->page_offset;
 865                         skb_shinfo(skb)->frags[j].size = 0;
 866                 } else {
 867                         put_page(page_info->page);
 868                 }
 869                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 870
 871                 remaining -= curr_frag_len;
 872                 index_inc(&rxq_idx, rxq->len);
 873                 memset(page_info, 0, sizeof(*page_info));
 874         }
 875         BUG_ON(j > MAX_SKB_FRAGS);
 876
 877         skb_shinfo(skb)->nr_frags = j + 1;
 878         skb->len = pkt_size;
 879         skb->data_len = pkt_size;
 880         skb->truesize += pkt_size;
 881         skb->ip_summed = CHECKSUM_UNNECESSARY;
 882
 883         if (likely(!vlanf)) {
 884                 napi_gro_frags(&eq_obj->napi);
 885         } else {
 886                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 887                 vid = be16_to_cpu(vid);
 888
 889                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 890                         return;
 891
 892                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 893         }
 894
 895         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 896         return;
 897 }
 898
 899 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 900 {
 901         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 902
 903         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 904                 return NULL;
 905
 906         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 907
 908         queue_tail_inc(&adapter->rx_obj.cq);
 909         return rxcp;
 910 }
 911
 912 /* To reset the valid bit, we need to reset the whole word as
 913  * when walking the queue the valid entries are little-endian
 914  * and invalid entries are host endian
 915  */
 916 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 917 {
 918         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 919 }
 920
 921 static inline struct page *be_alloc_pages(u32 size)
 922 {
 923         gfp_t alloc_flags = GFP_ATOMIC;
 924         u32 order = get_order(size);
 925         if (order > 0)
 926                 alloc_flags |= __GFP_COMP;
 927         return  alloc_pages(alloc_flags, order);
 928 }
 929
 930 /*
 931  * Allocate a page, split it to fragments of size rx_frag_size and post as
 932  * receive buffers to BE
 933  */
 934 static void be_post_rx_frags(struct be_adapter *adapter)
 935 {
 936         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 937         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 938         struct be_queue_info *rxq = &adapter->rx_obj.q;
 939         struct page *pagep = NULL;
 940         struct be_eth_rx_d *rxd;
 941         u64 page_dmaaddr = 0, frag_dmaaddr;
 942         u32 posted, page_offset = 0;
 943
 944         page_info = &page_info_tbl[rxq->head];
 945         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 946                 if (!pagep) {
 947                         pagep = be_alloc_pages(adapter->big_page_size);
 948                         if (unlikely(!pagep)) {
 949                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 950                                 break;
 951                         }
 952                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 953                                                 adapter->big_page_size,
 954                                                 PCI_DMA_FROMDEVICE);
 955                         page_info->page_offset = 0;
 956                 } else {
 957                         get_page(pagep);
 958                         page_info->page_offset = page_offset + rx_frag_size;
 959                 }
 960                 page_offset = page_info->page_offset;
 961                 page_info->page = pagep;
 962                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 963                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 964
 965                 rxd = queue_head_node(rxq);
 966                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 967                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 968
 969                 /* Any space left in the current big page for another frag? */
 970                 if ((page_offset + rx_frag_size + rx_frag_size) >
 971                                         adapter->big_page_size) {
 972                         pagep = NULL;
 973                         page_info->last_page_user = true;
 974                 }
 975
 976                 prev_page_info = page_info;
 977                 queue_head_inc(rxq);
 978                 page_info = &page_info_tbl[rxq->head];
 979         }
 980         if (pagep)
 981                 prev_page_info->last_page_user = true;
 982
 983         if (posted) {
 984                 atomic_add(posted, &rxq->used);
 985                 be_rxq_notify(adapter, rxq->id, posted);
 986         } else if (atomic_read(&rxq->used) == 0) {
 987                 /* Let be_worker replenish when memory is available */
 988                 adapter->rx_post_starved = true;
 989         }
 990
 991         return;
 992 }
 993
 994 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 995 {
 996         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 997
 998         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 999                 return NULL;
1000
1001         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1002
1003         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1004
1005         queue_tail_inc(tx_cq);
1006         return txcp;
1007 }
1008
1009 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1010 {
1011         struct be_queue_info *txq = &adapter->tx_obj.q;
1012         struct be_eth_wrb *wrb;
1013         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1014         struct sk_buff *sent_skb;
1015         u64 busaddr;
1016         u16 cur_index, num_wrbs = 0;
1017
1018         cur_index = txq->tail;
1019         sent_skb = sent_skbs[cur_index];
1020         BUG_ON(!sent_skb);
1021         sent_skbs[cur_index] = NULL;
1022         wrb = queue_tail_node(txq);
1023         be_dws_le_to_cpu(wrb, sizeof(*wrb));
1024         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1025         if (busaddr != 0) {
1026                 pci_unmap_single(adapter->pdev, busaddr,
1027                                  wrb->frag_len, PCI_DMA_TODEVICE);
1028         }
1029         num_wrbs++;
1030         queue_tail_inc(txq);
1031
1032         while (cur_index != last_index) {
1033                 cur_index = txq->tail;
1034                 wrb = queue_tail_node(txq);
1035                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1036                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1037                 if (busaddr != 0) {
1038                         pci_unmap_page(adapter->pdev, busaddr,
1039                                        wrb->frag_len, PCI_DMA_TODEVICE);
1040                 }
1041                 num_wrbs++;
1042                 queue_tail_inc(txq);
1043         }
1044
1045         atomic_sub(num_wrbs, &txq->used);
1046
1047         kfree_skb(sent_skb);
1048 }
1049
1050 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1051 {
1052         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1053
1054         if (!eqe->evt)
1055                 return NULL;
1056
1057         eqe->evt = le32_to_cpu(eqe->evt);
1058         queue_tail_inc(&eq_obj->q);
1059         return eqe;
1060 }
1061
1062 static int event_handle(struct be_adapter *adapter,
1063                         struct be_eq_obj *eq_obj)
1064 {
1065         struct be_eq_entry *eqe;
1066         u16 num = 0;
1067
1068         while ((eqe = event_get(eq_obj)) != NULL) {
1069                 eqe->evt = 0;
1070                 num++;
1071         }
1072
1073         /* Deal with any spurious interrupts that come
1074          * without events
1075          */
1076         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1077         if (num)
1078                 napi_schedule(&eq_obj->napi);
1079
1080         return num;
1081 }
1082
1083 /* Just read and notify events without processing them.
1084  * Used at the time of destroying event queues */
1085 static void be_eq_clean(struct be_adapter *adapter,
1086                         struct be_eq_obj *eq_obj)
1087 {
1088         struct be_eq_entry *eqe;
1089         u16 num = 0;
1090
1091         while ((eqe = event_get(eq_obj)) != NULL) {
1092                 eqe->evt = 0;
1093                 num++;
1094         }
1095
1096         if (num)
1097                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1098 }
1099
1100 static void be_rx_q_clean(struct be_adapter *adapter)
1101 {
1102         struct be_rx_page_info *page_info;
1103         struct be_queue_info *rxq = &adapter->rx_obj.q;
1104         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1105         struct be_eth_rx_compl *rxcp;
1106         u16 tail;
1107
1108         /* First cleanup pending rx completions */
1109         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1110                 be_rx_compl_discard(adapter, rxcp);
1111                 be_rx_compl_reset(rxcp);
1112                 be_cq_notify(adapter, rx_cq->id, true, 1);
1113         }
1114
1115         /* Then free posted rx buffer that were not used */
1116         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1117         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1118                 page_info = get_rx_page_info(adapter, tail);
1119                 put_page(page_info->page);
1120                 memset(page_info, 0, sizeof(*page_info));
1121         }
1122         BUG_ON(atomic_read(&rxq->used));
1123 }
1124
1125 static void be_tx_compl_clean(struct be_adapter *adapter)
1126 {
1127         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1128         struct be_queue_info *txq = &adapter->tx_obj.q;
1129         struct be_eth_tx_compl *txcp;
1130         u16 end_idx, cmpl = 0, timeo = 0;
1131
1132         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1133         do {
1134                 while ((txcp = be_tx_compl_get(tx_cq))) {
1135                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1136                                         wrb_index, txcp);
1137                         be_tx_compl_process(adapter, end_idx);
1138                         cmpl++;
1139                 }
1140                 if (cmpl) {
1141                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1142                         cmpl = 0;
1143                 }
1144
1145                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1146                         break;
1147
1148                 mdelay(1);
1149         } while (true);
1150
1151         if (atomic_read(&txq->used))
1152                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1153                         atomic_read(&txq->used));
1154 }
1155
1156 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1157 {
1158         struct be_queue_info *q;
1159
1160         q = &adapter->mcc_obj.q;
1161         if (q->created)
1162                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1163         be_queue_free(adapter, q);
1164
1165         q = &adapter->mcc_obj.cq;
1166         if (q->created)
1167                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1168         be_queue_free(adapter, q);
1169 }
1170
1171 /* Must be called only after TX qs are created as MCC shares TX EQ */
1172 static int be_mcc_queues_create(struct be_adapter *adapter)
1173 {
1174         struct be_queue_info *q, *cq;
1175
1176         /* Alloc MCC compl queue */
1177         cq = &adapter->mcc_obj.cq;
1178         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1179                         sizeof(struct be_mcc_compl)))
1180                 goto err;
1181
1182         /* Ask BE to create MCC compl queue; share TX's eq */
1183         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1184                 goto mcc_cq_free;
1185
1186         /* Alloc MCC queue */
1187         q = &adapter->mcc_obj.q;
1188         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1189                 goto mcc_cq_destroy;
1190
1191         /* Ask BE to create MCC queue */
1192         if (be_cmd_mccq_create(adapter, q, cq))
1193                 goto mcc_q_free;
1194
1195         return 0;
1196
1197 mcc_q_free:
1198         be_queue_free(adapter, q);
1199 mcc_cq_destroy:
1200         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1201 mcc_cq_free:
1202         be_queue_free(adapter, cq);
1203 err:
1204         return -1;
1205 }
1206
1207 static void be_tx_queues_destroy(struct be_adapter *adapter)
1208 {
1209         struct be_queue_info *q;
1210
1211         q = &adapter->tx_obj.q;
1212         if (q->created)
1213                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1214         be_queue_free(adapter, q);
1215
1216         q = &adapter->tx_obj.cq;
1217         if (q->created)
1218                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1219         be_queue_free(adapter, q);
1220
1221         /* Clear any residual events */
1222         be_eq_clean(adapter, &adapter->tx_eq);
1223
1224         q = &adapter->tx_eq.q;
1225         if (q->created)
1226                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1227         be_queue_free(adapter, q);
1228 }
1229
1230 static int be_tx_queues_create(struct be_adapter *adapter)
1231 {
1232         struct be_queue_info *eq, *q, *cq;
1233
1234         adapter->tx_eq.max_eqd = 0;
1235         adapter->tx_eq.min_eqd = 0;
1236         adapter->tx_eq.cur_eqd = 96;
1237         adapter->tx_eq.enable_aic = false;
1238         /* Alloc Tx Event queue */
1239         eq = &adapter->tx_eq.q;
1240         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1241                 return -1;
1242
1243         /* Ask BE to create Tx Event queue */
1244         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1245                 goto tx_eq_free;
1246         /* Alloc TX eth compl queue */
1247         cq = &adapter->tx_obj.cq;
1248         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1249                         sizeof(struct be_eth_tx_compl)))
1250                 goto tx_eq_destroy;
1251
1252         /* Ask BE to create Tx eth compl queue */
1253         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1254                 goto tx_cq_free;
1255
1256         /* Alloc TX eth queue */
1257         q = &adapter->tx_obj.q;
1258         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1259                 goto tx_cq_destroy;
1260
1261         /* Ask BE to create Tx eth queue */
1262         if (be_cmd_txq_create(adapter, q, cq))
1263                 goto tx_q_free;
1264         return 0;
1265
1266 tx_q_free:
1267         be_queue_free(adapter, q);
1268 tx_cq_destroy:
1269         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1270 tx_cq_free:
1271         be_queue_free(adapter, cq);
1272 tx_eq_destroy:
1273         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1274 tx_eq_free:
1275         be_queue_free(adapter, eq);
1276         return -1;
1277 }
1278
1279 static void be_rx_queues_destroy(struct be_adapter *adapter)
1280 {
1281         struct be_queue_info *q;
1282
1283         q = &adapter->rx_obj.q;
1284         if (q->created) {
1285                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1286
1287                 /* After the rxq is invalidated, wait for a grace time
1288                  * of 1ms for all dma to end and the flush compl to arrive
1289                  */
1290                 mdelay(1);
1291                 be_rx_q_clean(adapter);
1292         }
1293         be_queue_free(adapter, q);
1294
1295         q = &adapter->rx_obj.cq;
1296         if (q->created)
1297                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1298         be_queue_free(adapter, q);
1299
1300         /* Clear any residual events */
1301         be_eq_clean(adapter, &adapter->rx_eq);
1302
1303         q = &adapter->rx_eq.q;
1304         if (q->created)
1305                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1306         be_queue_free(adapter, q);
1307 }
1308
1309 static int be_rx_queues_create(struct be_adapter *adapter)
1310 {
1311         struct be_queue_info *eq, *q, *cq;
1312         int rc;
1313
1314         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1315         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1316         adapter->rx_eq.min_eqd = 0;
1317         adapter->rx_eq.cur_eqd = 0;
1318         adapter->rx_eq.enable_aic = true;
1319
1320         /* Alloc Rx Event queue */
1321         eq = &adapter->rx_eq.q;
1322         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1323                                 sizeof(struct be_eq_entry));
1324         if (rc)
1325                 return rc;
1326
1327         /* Ask BE to create Rx Event queue */
1328         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1329         if (rc)
1330                 goto rx_eq_free;
1331
1332         /* Alloc RX eth compl queue */
1333         cq = &adapter->rx_obj.cq;
1334         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1335                         sizeof(struct be_eth_rx_compl));
1336         if (rc)
1337                 goto rx_eq_destroy;
1338
1339         /* Ask BE to create Rx eth compl queue */
1340         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1341         if (rc)
1342                 goto rx_cq_free;
1343
1344         /* Alloc RX eth queue */
1345         q = &adapter->rx_obj.q;
1346         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1347         if (rc)
1348                 goto rx_cq_destroy;
1349
1350         /* Ask BE to create Rx eth queue */
1351         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1352                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1353         if (rc)
1354                 goto rx_q_free;
1355
1356         return 0;
1357 rx_q_free:
1358         be_queue_free(adapter, q);
1359 rx_cq_destroy:
1360         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1361 rx_cq_free:
1362         be_queue_free(adapter, cq);
1363 rx_eq_destroy:
1364         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1365 rx_eq_free:
1366         be_queue_free(adapter, eq);
1367         return rc;
1368 }
1369
1370 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1371 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1372 {
1373         return eq_id - 8 * be_pci_func(adapter);
1374 }
1375
1376 static irqreturn_t be_intx(int irq, void *dev)
1377 {
1378         struct be_adapter *adapter = dev;
1379         int isr;
1380
1381         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1382                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1383         if (!isr)
1384                 return IRQ_NONE;
1385
1386         event_handle(adapter, &adapter->tx_eq);
1387         event_handle(adapter, &adapter->rx_eq);
1388
1389         return IRQ_HANDLED;
1390 }
1391
1392 static irqreturn_t be_msix_rx(int irq, void *dev)
1393 {
1394         struct be_adapter *adapter = dev;
1395
1396         event_handle(adapter, &adapter->rx_eq);
1397
1398         return IRQ_HANDLED;
1399 }
1400
1401 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1402 {
1403         struct be_adapter *adapter = dev;
1404
1405         event_handle(adapter, &adapter->tx_eq);
1406
1407         return IRQ_HANDLED;
1408 }
1409
1410 static inline bool do_gro(struct be_adapter *adapter,
1411                         struct be_eth_rx_compl *rxcp)
1412 {
1413         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1414         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1415
1416         if (err)
1417                 drvr_stats(adapter)->be_rxcp_err++;
1418
1419         return (tcp_frame && !err) ? true : false;
1420 }
1421
1422 int be_poll_rx(struct napi_struct *napi, int budget)
1423 {
1424         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1425         struct be_adapter *adapter =
1426                 container_of(rx_eq, struct be_adapter, rx_eq);
1427         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1428         struct be_eth_rx_compl *rxcp;
1429         u32 work_done;
1430
1431         adapter->stats.drvr_stats.be_rx_polls++;
1432         for (work_done = 0; work_done < budget; work_done++) {
1433                 rxcp = be_rx_compl_get(adapter);
1434                 if (!rxcp)
1435                         break;
1436
1437                 if (do_gro(adapter, rxcp))
1438                         be_rx_compl_process_gro(adapter, rxcp);
1439                 else
1440                         be_rx_compl_process(adapter, rxcp);
1441
1442                 be_rx_compl_reset(rxcp);
1443         }
1444
1445         /* Refill the queue */
1446         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1447                 be_post_rx_frags(adapter);
1448
1449         /* All consumed */
1450         if (work_done < budget) {
1451                 napi_complete(napi);
1452                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1453         } else {
1454                 /* More to be consumed; continue with interrupts disabled */
1455                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1456         }
1457         return work_done;
1458 }
1459
1460 void be_process_tx(struct be_adapter *adapter)
1461 {
1462         struct be_queue_info *txq = &adapter->tx_obj.q;
1463         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1464         struct be_eth_tx_compl *txcp;
1465         u32 num_cmpl = 0;
1466         u16 end_idx;
1467
1468         while ((txcp = be_tx_compl_get(tx_cq))) {
1469                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1470                                         wrb_index, txcp);
1471                 be_tx_compl_process(adapter, end_idx);
1472                 num_cmpl++;
1473         }
1474
1475         if (num_cmpl) {
1476                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1477
1478                 /* As Tx wrbs have been freed up, wake up netdev queue if
1479                  * it was stopped due to lack of tx wrbs.
1480                  */
1481                 if (netif_queue_stopped(adapter->netdev) &&
1482                         atomic_read(&txq->used) < txq->len / 2) {
1483                         netif_wake_queue(adapter->netdev);
1484                 }
1485
1486                 drvr_stats(adapter)->be_tx_events++;
1487                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1488         }
1489 }
1490
1491 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1492  * For TX/MCC we don't honour budget; consume everything
1493  */
1494 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1495 {
1496         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1497         struct be_adapter *adapter =
1498                 container_of(tx_eq, struct be_adapter, tx_eq);
1499
1500         napi_complete(napi);
1501
1502         be_process_tx(adapter);
1503
1504         be_process_mcc(adapter);
1505
1506         return 1;
1507 }
1508
1509 static void be_worker(struct work_struct *work)
1510 {
1511         struct be_adapter *adapter =
1512                 container_of(work, struct be_adapter, work.work);
1513
1514         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1515
1516         /* Set EQ delay */
1517         be_rx_eqd_update(adapter);
1518
1519         be_tx_rate_update(adapter);
1520         be_rx_rate_update(adapter);
1521
1522         if (adapter->rx_post_starved) {
1523                 adapter->rx_post_starved = false;
1524                 be_post_rx_frags(adapter);
1525         }
1526
1527         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1528 }
1529
1530 static void be_msix_disable(struct be_adapter *adapter)
1531 {
1532         if (adapter->msix_enabled) {
1533                 pci_disable_msix(adapter->pdev);
1534                 adapter->msix_enabled = false;
1535         }
1536 }
1537
1538 static void be_msix_enable(struct be_adapter *adapter)
1539 {
1540         int i, status;
1541
1542         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1543                 adapter->msix_entries[i].entry = i;
1544
1545         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1546                 BE_NUM_MSIX_VECTORS);
1547         if (status == 0)
1548                 adapter->msix_enabled = true;
1549         return;
1550 }
1551
1552 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1553 {
1554         return adapter->msix_entries[
1555                         be_evt_bit_get(adapter, eq_id)].vector;
1556 }
1557
1558 static int be_request_irq(struct be_adapter *adapter,
1559                 struct be_eq_obj *eq_obj,
1560                 void *handler, char *desc)
1561 {
1562         struct net_device *netdev = adapter->netdev;
1563         int vec;
1564
1565         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1566         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1567         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1568 }
1569
1570 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1571 {
1572         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1573         free_irq(vec, adapter);
1574 }
1575
1576 static int be_msix_register(struct be_adapter *adapter)
1577 {
1578         int status;
1579
1580         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1581         if (status)
1582                 goto err;
1583
1584         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1585         if (status)
1586                 goto free_tx_irq;
1587
1588         return 0;
1589
1590 free_tx_irq:
1591         be_free_irq(adapter, &adapter->tx_eq);
1592 err:
1593         dev_warn(&adapter->pdev->dev,
1594                 "MSIX Request IRQ failed - err %d\n", status);
1595         pci_disable_msix(adapter->pdev);
1596         adapter->msix_enabled = false;
1597         return status;
1598 }
1599
1600 static int be_irq_register(struct be_adapter *adapter)
1601 {
1602         struct net_device *netdev = adapter->netdev;
1603         int status;
1604
1605         if (adapter->msix_enabled) {
1606                 status = be_msix_register(adapter);
1607                 if (status == 0)
1608                         goto done;
1609         }
1610
1611         /* INTx */
1612         netdev->irq = adapter->pdev->irq;
1613         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1614                         adapter);
1615         if (status) {
1616                 dev_err(&adapter->pdev->dev,
1617                         "INTx request IRQ failed - err %d\n", status);
1618                 return status;
1619         }
1620 done:
1621         adapter->isr_registered = true;
1622         return 0;
1623 }
1624
1625 static void be_irq_unregister(struct be_adapter *adapter)
1626 {
1627         struct net_device *netdev = adapter->netdev;
1628
1629         if (!adapter->isr_registered)
1630                 return;
1631
1632         /* INTx */
1633         if (!adapter->msix_enabled) {
1634                 free_irq(netdev->irq, adapter);
1635                 goto done;
1636         }
1637
1638         /* MSIx */
1639         be_free_irq(adapter, &adapter->tx_eq);
1640         be_free_irq(adapter, &adapter->rx_eq);
1641 done:
1642         adapter->isr_registered = false;
1643         return;
1644 }
1645
1646 static int be_open(struct net_device *netdev)
1647 {
1648         struct be_adapter *adapter = netdev_priv(netdev);
1649         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1650         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1651         bool link_up;
1652         int status;
1653         u8 mac_speed;
1654         u16 link_speed;
1655
1656         /* First time posting */
1657         be_post_rx_frags(adapter);
1658
1659         napi_enable(&rx_eq->napi);
1660         napi_enable(&tx_eq->napi);
1661
1662         be_irq_register(adapter);
1663
1664         be_intr_set(adapter, true);
1665
1666         /* The evt queues are created in unarmed state; arm them */
1667         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1668         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1669
1670         /* Rx compl queue may be in unarmed state; rearm it */
1671         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1672
1673         /* Now that interrupts are on we can process async mcc */
1674         be_async_mcc_enable(adapter);
1675
1676         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1677                         &link_speed);
1678         if (status)
1679                 goto ret_sts;
1680         be_link_status_update(adapter, link_up);
1681
1682         status = be_vid_config(adapter);
1683         if (status)
1684                 goto ret_sts;
1685
1686         status = be_cmd_set_flow_control(adapter,
1687                                         adapter->tx_fc, adapter->rx_fc);
1688         if (status)
1689                 goto ret_sts;
1690
1691         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1692 ret_sts:
1693         return status;
1694 }
1695
1696 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1697 {
1698         struct be_dma_mem cmd;
1699         int status = 0;
1700         u8 mac[ETH_ALEN];
1701
1702         memset(mac, 0, ETH_ALEN);
1703
1704         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1705         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1706         if (cmd.va == NULL)
1707                 return -1;
1708         memset(cmd.va, 0, cmd.size);
1709
1710         if (enable) {
1711                 status = pci_write_config_dword(adapter->pdev,
1712                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1713                 if (status) {
1714                         dev_err(&adapter->pdev->dev,
1715                                 "Could not enable Wake-on-lan \n");
1716                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1717                                         cmd.dma);
1718                         return status;
1719                 }
1720                 status = be_cmd_enable_magic_wol(adapter,
1721                                 adapter->netdev->dev_addr, &cmd);
1722                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1723                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1724         } else {
1725                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1726                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1727                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1728         }
1729
1730         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1731         return status;
1732 }
1733
1734 static int be_setup(struct be_adapter *adapter)
1735 {
1736         struct net_device *netdev = adapter->netdev;
1737         u32 cap_flags, en_flags;
1738         int status;
1739
1740         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1741                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1742                         BE_IF_FLAGS_PROMISCUOUS |
1743                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1744         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1745                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1746
1747         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1748                         netdev->dev_addr, false/* pmac_invalid */,
1749                         &adapter->if_handle, &adapter->pmac_id);
1750         if (status != 0)
1751                 goto do_none;
1752
1753         status = be_tx_queues_create(adapter);
1754         if (status != 0)
1755                 goto if_destroy;
1756
1757         status = be_rx_queues_create(adapter);
1758         if (status != 0)
1759                 goto tx_qs_destroy;
1760
1761         status = be_mcc_queues_create(adapter);
1762         if (status != 0)
1763                 goto rx_qs_destroy;
1764
1765         adapter->link_speed = -1;
1766
1767         return 0;
1768
1769 rx_qs_destroy:
1770         be_rx_queues_destroy(adapter);
1771 tx_qs_destroy:
1772         be_tx_queues_destroy(adapter);
1773 if_destroy:
1774         be_cmd_if_destroy(adapter, adapter->if_handle);
1775 do_none:
1776         return status;
1777 }
1778
1779 static int be_clear(struct be_adapter *adapter)
1780 {
1781         be_mcc_queues_destroy(adapter);
1782         be_rx_queues_destroy(adapter);
1783         be_tx_queues_destroy(adapter);
1784
1785         be_cmd_if_destroy(adapter, adapter->if_handle);
1786
1787         /* tell fw we're done with firing cmds */
1788         be_cmd_fw_clean(adapter);
1789         return 0;
1790 }
1791
1792 static int be_close(struct net_device *netdev)
1793 {
1794         struct be_adapter *adapter = netdev_priv(netdev);
1795         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1796         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1797         int vec;
1798
1799         cancel_delayed_work_sync(&adapter->work);
1800
1801         be_async_mcc_disable(adapter);
1802
1803         netif_stop_queue(netdev);
1804         netif_carrier_off(netdev);
1805         adapter->link_up = false;
1806
1807         be_intr_set(adapter, false);
1808
1809         if (adapter->msix_enabled) {
1810                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1811                 synchronize_irq(vec);
1812                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1813                 synchronize_irq(vec);
1814         } else {
1815                 synchronize_irq(netdev->irq);
1816         }
1817         be_irq_unregister(adapter);
1818
1819         napi_disable(&rx_eq->napi);
1820         napi_disable(&tx_eq->napi);
1821
1822         /* Wait for all pending tx completions to arrive so that
1823          * all tx skbs are freed.
1824          */
1825         be_tx_compl_clean(adapter);
1826
1827         return 0;
1828 }
1829
1830 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1831 char flash_cookie[2][16] =      {"*** SE FLAS",
1832                                 "H DIRECTORY *** "};
1833
1834 static bool be_flash_redboot(struct be_adapter *adapter,
1835                         const u8 *p, u32 img_start, int image_size,
1836                         int hdr_size)
1837 {
1838         u32 crc_offset;
1839         u8 flashed_crc[4];
1840         int status;
1841
1842         crc_offset = hdr_size + img_start + image_size - 4;
1843
1844         p += crc_offset;
1845
1846         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1847                         (img_start + image_size - 4));
1848         if (status) {
1849                 dev_err(&adapter->pdev->dev,
1850                 "could not get crc from flash, not flashing redboot\n");
1851                 return false;
1852         }
1853
1854         /*update redboot only if crc does not match*/
1855         if (!memcmp(flashed_crc, p, 4))
1856                 return false;
1857         else
1858                 return true;
1859 }
1860
1861 static int be_flash_data(struct be_adapter *adapter,
1862                         const struct firmware *fw,
1863                         struct be_dma_mem *flash_cmd, int num_of_images)
1864
1865 {
1866         int status = 0, i, filehdr_size = 0;
1867         u32 total_bytes = 0, flash_op;
1868         int num_bytes;
1869         const u8 *p = fw->data;
1870         struct be_cmd_write_flashrom *req = flash_cmd->va;
1871         struct flash_comp *pflashcomp;
1872
1873         struct flash_comp gen3_flash_types[8] = {
1874                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1875                         FLASH_IMAGE_MAX_SIZE_g3},
1876                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1877                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1878                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1879                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1880                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1881                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1882                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1883                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1884                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1885                         FLASH_IMAGE_MAX_SIZE_g3},
1886                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1887                         FLASH_IMAGE_MAX_SIZE_g3},
1888                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1889                         FLASH_IMAGE_MAX_SIZE_g3}
1890         };
1891         struct flash_comp gen2_flash_types[8] = {
1892                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1893                         FLASH_IMAGE_MAX_SIZE_g2},
1894                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1895                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1896                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1897                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1898                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1899                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1900                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1901                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1902                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1903                         FLASH_IMAGE_MAX_SIZE_g2},
1904                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1905                         FLASH_IMAGE_MAX_SIZE_g2},
1906                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1907                          FLASH_IMAGE_MAX_SIZE_g2}
1908         };
1909
1910         if (adapter->generation == BE_GEN3) {
1911                 pflashcomp = gen3_flash_types;
1912                 filehdr_size = sizeof(struct flash_file_hdr_g3);
1913         } else {
1914                 pflashcomp = gen2_flash_types;
1915                 filehdr_size = sizeof(struct flash_file_hdr_g2);
1916         }
1917         for (i = 0; i < 8; i++) {
1918                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1919                         (!be_flash_redboot(adapter, fw->data,
1920                          pflashcomp[i].offset, pflashcomp[i].size,
1921                          filehdr_size)))
1922                         continue;
1923                 p = fw->data;
1924                 p += filehdr_size + pflashcomp[i].offset
1925                         + (num_of_images * sizeof(struct image_hdr));
1926         if (p + pflashcomp[i].size > fw->data + fw->size)
1927                 return -1;
1928         total_bytes = pflashcomp[i].size;
1929                 while (total_bytes) {
1930                         if (total_bytes > 32*1024)
1931                                 num_bytes = 32*1024;
1932                         else
1933                                 num_bytes = total_bytes;
1934                         total_bytes -= num_bytes;
1935
1936                         if (!total_bytes)
1937                                 flash_op = FLASHROM_OPER_FLASH;
1938                         else
1939                                 flash_op = FLASHROM_OPER_SAVE;
1940                         memcpy(req->params.data_buf, p, num_bytes);
1941                         p += num_bytes;
1942                         status = be_cmd_write_flashrom(adapter, flash_cmd,
1943                                 pflashcomp[i].optype, flash_op, num_bytes);
1944                         if (status) {
1945                                 dev_err(&adapter->pdev->dev,
1946                                         "cmd to write to flash rom failed.\n");
1947                                 return -1;
1948                         }
1949                         yield();
1950                 }
1951         }
1952         return 0;
1953 }
1954
1955 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
1956 {
1957         if (fhdr == NULL)
1958                 return 0;
1959         if (fhdr->build[0] == '3')
1960                 return BE_GEN3;
1961         else if (fhdr->build[0] == '2')
1962                 return BE_GEN2;
1963         else
1964                 return 0;
1965 }
1966
1967 int be_load_fw(struct be_adapter *adapter, u8 *func)
1968 {
1969         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1970         const struct firmware *fw;
1971         struct flash_file_hdr_g2 *fhdr;
1972         struct flash_file_hdr_g3 *fhdr3;
1973         struct image_hdr *img_hdr_ptr = NULL;
1974         struct be_dma_mem flash_cmd;
1975         int status, i = 0;
1976         const u8 *p;
1977         char fw_ver[FW_VER_LEN];
1978         char fw_cfg;
1979
1980         status = be_cmd_get_fw_ver(adapter, fw_ver);
1981         if (status)
1982                 return status;
1983
1984         fw_cfg = *(fw_ver + 2);
1985         if (fw_cfg == '0')
1986                 fw_cfg = '1';
1987         strcpy(fw_file, func);
1988
1989         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1990         if (status)
1991                 goto fw_exit;
1992
1993         p = fw->data;
1994         fhdr = (struct flash_file_hdr_g2 *) p;
1995         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1996
1997         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1998         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1999                                         &flash_cmd.dma);
2000         if (!flash_cmd.va) {
2001                 status = -ENOMEM;
2002                 dev_err(&adapter->pdev->dev,
2003                         "Memory allocation failure while flashing\n");
2004                 goto fw_exit;
2005         }
2006
2007         if ((adapter->generation == BE_GEN3) &&
2008                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2009                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2010                 for (i = 0; i < fhdr3->num_imgs; i++) {
2011                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2012                                         (sizeof(struct flash_file_hdr_g3) +
2013                                         i * sizeof(struct image_hdr)));
2014                         if (img_hdr_ptr->imageid == 1) {
2015                                 status = be_flash_data(adapter, fw,
2016                                                 &flash_cmd, fhdr3->num_imgs);
2017                         }
2018
2019                 }
2020         } else if ((adapter->generation == BE_GEN2) &&
2021                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2022                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2023         } else {
2024                 dev_err(&adapter->pdev->dev,
2025                         "UFI and Interface are not compatible for flashing\n");
2026                 status = -1;
2027         }
2028
2029         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2030                                 flash_cmd.dma);
2031         if (status) {
2032                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2033                 goto fw_exit;
2034         }
2035
2036         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2037
2038 fw_exit:
2039         release_firmware(fw);
2040         return status;
2041 }
2042
2043 static struct net_device_ops be_netdev_ops = {
2044         .ndo_open               = be_open,
2045         .ndo_stop               = be_close,
2046         .ndo_start_xmit         = be_xmit,
2047         .ndo_get_stats          = be_get_stats,
2048         .ndo_set_rx_mode        = be_set_multicast_list,
2049         .ndo_set_mac_address    = be_mac_addr_set,
2050         .ndo_change_mtu         = be_change_mtu,
2051         .ndo_validate_addr      = eth_validate_addr,
2052         .ndo_vlan_rx_register   = be_vlan_register,
2053         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2054         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2055 };
2056
2057 static void be_netdev_init(struct net_device *netdev)
2058 {
2059         struct be_adapter *adapter = netdev_priv(netdev);
2060
2061         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2062                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2063                 NETIF_F_GRO;
2064
2065         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2066
2067         netdev->flags |= IFF_MULTICAST;
2068
2069         adapter->rx_csum = true;
2070
2071         /* Default settings for Rx and Tx flow control */
2072         adapter->rx_fc = true;
2073         adapter->tx_fc = true;
2074
2075         netif_set_gso_max_size(netdev, 65535);
2076
2077         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2078
2079         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2080
2081         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2082                 BE_NAPI_WEIGHT);
2083         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2084                 BE_NAPI_WEIGHT);
2085
2086         netif_carrier_off(netdev);
2087         netif_stop_queue(netdev);
2088 }
2089
2090 static void be_unmap_pci_bars(struct be_adapter *adapter)
2091 {
2092         if (adapter->csr)
2093                 iounmap(adapter->csr);
2094         if (adapter->db)
2095                 iounmap(adapter->db);
2096         if (adapter->pcicfg)
2097                 iounmap(adapter->pcicfg);
2098 }
2099
2100 static int be_map_pci_bars(struct be_adapter *adapter)
2101 {
2102         u8 __iomem *addr;
2103         int pcicfg_reg;
2104
2105         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2106                         pci_resource_len(adapter->pdev, 2));
2107         if (addr == NULL)
2108                 return -ENOMEM;
2109         adapter->csr = addr;
2110
2111         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2112                         128 * 1024);
2113         if (addr == NULL)
2114                 goto pci_map_err;
2115         adapter->db = addr;
2116
2117         if (adapter->generation == BE_GEN2)
2118                 pcicfg_reg = 1;
2119         else
2120                 pcicfg_reg = 0;
2121
2122         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2123                         pci_resource_len(adapter->pdev, pcicfg_reg));
2124         if (addr == NULL)
2125                 goto pci_map_err;
2126         adapter->pcicfg = addr;
2127
2128         return 0;
2129 pci_map_err:
2130         be_unmap_pci_bars(adapter);
2131         return -ENOMEM;
2132 }
2133
2134
2135 static void be_ctrl_cleanup(struct be_adapter *adapter)
2136 {
2137         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2138
2139         be_unmap_pci_bars(adapter);
2140
2141         if (mem->va)
2142                 pci_free_consistent(adapter->pdev, mem->size,
2143                         mem->va, mem->dma);
2144
2145         mem = &adapter->mc_cmd_mem;
2146         if (mem->va)
2147                 pci_free_consistent(adapter->pdev, mem->size,
2148                         mem->va, mem->dma);
2149 }
2150
2151 static int be_ctrl_init(struct be_adapter *adapter)
2152 {
2153         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2154         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2155         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2156         int status;
2157
2158         status = be_map_pci_bars(adapter);
2159         if (status)
2160                 goto done;
2161
2162         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2163         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2164                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2165         if (!mbox_mem_alloc->va) {
2166                 status = -ENOMEM;
2167                 goto unmap_pci_bars;
2168         }
2169
2170         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2171         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2172         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2173         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2174
2175         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2176         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2177                         &mc_cmd_mem->dma);
2178         if (mc_cmd_mem->va == NULL) {
2179                 status = -ENOMEM;
2180                 goto free_mbox;
2181         }
2182         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2183
2184         spin_lock_init(&adapter->mbox_lock);
2185         spin_lock_init(&adapter->mcc_lock);
2186         spin_lock_init(&adapter->mcc_cq_lock);
2187
2188         pci_save_state(adapter->pdev);
2189         return 0;
2190
2191 free_mbox:
2192         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2193                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2194
2195 unmap_pci_bars:
2196         be_unmap_pci_bars(adapter);
2197
2198 done:
2199         return status;
2200 }
2201
2202 static void be_stats_cleanup(struct be_adapter *adapter)
2203 {
2204         struct be_stats_obj *stats = &adapter->stats;
2205         struct be_dma_mem *cmd = &stats->cmd;
2206
2207         if (cmd->va)
2208                 pci_free_consistent(adapter->pdev, cmd->size,
2209                         cmd->va, cmd->dma);
2210 }
2211
2212 static int be_stats_init(struct be_adapter *adapter)
2213 {
2214         struct be_stats_obj *stats = &adapter->stats;
2215         struct be_dma_mem *cmd = &stats->cmd;
2216
2217         cmd->size = sizeof(struct be_cmd_req_get_stats);
2218         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2219         if (cmd->va == NULL)
2220                 return -1;
2221         memset(cmd->va, 0, cmd->size);
2222         return 0;
2223 }
2224
2225 static void __devexit be_remove(struct pci_dev *pdev)
2226 {
2227         struct be_adapter *adapter = pci_get_drvdata(pdev);
2228
2229         if (!adapter)
2230                 return;
2231
2232         unregister_netdev(adapter->netdev);
2233
2234         be_clear(adapter);
2235
2236         be_stats_cleanup(adapter);
2237
2238         be_ctrl_cleanup(adapter);
2239
2240         be_msix_disable(adapter);
2241
2242         pci_set_drvdata(pdev, NULL);
2243         pci_release_regions(pdev);
2244         pci_disable_device(pdev);
2245
2246         free_netdev(adapter->netdev);
2247 }
2248
2249 static int be_get_config(struct be_adapter *adapter)
2250 {
2251         int status;
2252         u8 mac[ETH_ALEN];
2253
2254         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2255         if (status)
2256                 return status;
2257
2258         status = be_cmd_query_fw_cfg(adapter,
2259                                 &adapter->port_num, &adapter->cap);
2260         if (status)
2261                 return status;
2262
2263         memset(mac, 0, ETH_ALEN);
2264         status = be_cmd_mac_addr_query(adapter, mac,
2265                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2266         if (status)
2267                 return status;
2268
2269         if (!is_valid_ether_addr(mac))
2270                 return -EADDRNOTAVAIL;
2271
2272         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2273         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2274
2275         if (adapter->cap & 0x400)
2276                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2277         else
2278                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2279
2280         return 0;
2281 }
2282
2283 static int __devinit be_probe(struct pci_dev *pdev,
2284                         const struct pci_device_id *pdev_id)
2285 {
2286         int status = 0;
2287         struct be_adapter *adapter;
2288         struct net_device *netdev;
2289
2290         status = pci_enable_device(pdev);
2291         if (status)
2292                 goto do_none;
2293
2294         status = pci_request_regions(pdev, DRV_NAME);
2295         if (status)
2296                 goto disable_dev;
2297         pci_set_master(pdev);
2298
2299         netdev = alloc_etherdev(sizeof(struct be_adapter));
2300         if (netdev == NULL) {
2301                 status = -ENOMEM;
2302                 goto rel_reg;
2303         }
2304         adapter = netdev_priv(netdev);
2305
2306         switch (pdev->device) {
2307         case BE_DEVICE_ID1:
2308         case OC_DEVICE_ID1:
2309                 adapter->generation = BE_GEN2;
2310                 break;
2311         case BE_DEVICE_ID2:
2312         case OC_DEVICE_ID2:
2313                 adapter->generation = BE_GEN3;
2314                 break;
2315         default:
2316                 adapter->generation = 0;
2317         }
2318
2319         adapter->pdev = pdev;
2320         pci_set_drvdata(pdev, adapter);
2321         adapter->netdev = netdev;
2322         be_netdev_init(netdev);
2323         SET_NETDEV_DEV(netdev, &pdev->dev);
2324
2325         be_msix_enable(adapter);
2326
2327         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2328         if (!status) {
2329                 netdev->features |= NETIF_F_HIGHDMA;
2330         } else {
2331                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2332                 if (status) {
2333                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2334                         goto free_netdev;
2335                 }
2336         }
2337
2338         status = be_ctrl_init(adapter);
2339         if (status)
2340                 goto free_netdev;
2341
2342         /* sync up with fw's ready state */
2343         status = be_cmd_POST(adapter);
2344         if (status)
2345                 goto ctrl_clean;
2346
2347         /* tell fw we're ready to fire cmds */
2348         status = be_cmd_fw_init(adapter);
2349         if (status)
2350                 goto ctrl_clean;
2351
2352         status = be_cmd_reset_function(adapter);
2353         if (status)
2354                 goto ctrl_clean;
2355
2356         status = be_stats_init(adapter);
2357         if (status)
2358                 goto ctrl_clean;
2359
2360         status = be_get_config(adapter);
2361         if (status)
2362                 goto stats_clean;
2363
2364         INIT_DELAYED_WORK(&adapter->work, be_worker);
2365
2366         status = be_setup(adapter);
2367         if (status)
2368                 goto stats_clean;
2369
2370         status = register_netdev(netdev);
2371         if (status != 0)
2372                 goto unsetup;
2373
2374         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2375         return 0;
2376
2377 unsetup:
2378         be_clear(adapter);
2379 stats_clean:
2380         be_stats_cleanup(adapter);
2381 ctrl_clean:
2382         be_ctrl_cleanup(adapter);
2383 free_netdev:
2384         be_msix_disable(adapter);
2385         free_netdev(adapter->netdev);
2386         pci_set_drvdata(pdev, NULL);
2387 rel_reg:
2388         pci_release_regions(pdev);
2389 disable_dev:
2390         pci_disable_device(pdev);
2391 do_none:
2392         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2393         return status;
2394 }
2395
2396 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2397 {
2398         struct be_adapter *adapter = pci_get_drvdata(pdev);
2399         struct net_device *netdev =  adapter->netdev;
2400
2401         if (adapter->wol)
2402                 be_setup_wol(adapter, true);
2403
2404         netif_device_detach(netdev);
2405         if (netif_running(netdev)) {
2406                 rtnl_lock();
2407                 be_close(netdev);
2408                 rtnl_unlock();
2409         }
2410         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2411         be_clear(adapter);
2412
2413         pci_save_state(pdev);
2414         pci_disable_device(pdev);
2415         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2416         return 0;
2417 }
2418
2419 static int be_resume(struct pci_dev *pdev)
2420 {
2421         int status = 0;
2422         struct be_adapter *adapter = pci_get_drvdata(pdev);
2423         struct net_device *netdev =  adapter->netdev;
2424
2425         netif_device_detach(netdev);
2426
2427         status = pci_enable_device(pdev);
2428         if (status)
2429                 return status;
2430
2431         pci_set_power_state(pdev, 0);
2432         pci_restore_state(pdev);
2433
2434         /* tell fw we're ready to fire cmds */
2435         status = be_cmd_fw_init(adapter);
2436         if (status)
2437                 return status;
2438
2439         be_setup(adapter);
2440         if (netif_running(netdev)) {
2441                 rtnl_lock();
2442                 be_open(netdev);
2443                 rtnl_unlock();
2444         }
2445         netif_device_attach(netdev);
2446
2447         if (adapter->wol)
2448                 be_setup_wol(adapter, false);
2449         return 0;
2450 }
2451
2452 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2453                                 pci_channel_state_t state)
2454 {
2455         struct be_adapter *adapter = pci_get_drvdata(pdev);
2456         struct net_device *netdev =  adapter->netdev;
2457
2458         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2459
2460         adapter->eeh_err = true;
2461
2462         netif_device_detach(netdev);
2463
2464         if (netif_running(netdev)) {
2465                 rtnl_lock();
2466                 be_close(netdev);
2467                 rtnl_unlock();
2468         }
2469         be_clear(adapter);
2470
2471         if (state == pci_channel_io_perm_failure)
2472                 return PCI_ERS_RESULT_DISCONNECT;
2473
2474         pci_disable_device(pdev);
2475
2476         return PCI_ERS_RESULT_NEED_RESET;
2477 }
2478
2479 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2480 {
2481         struct be_adapter *adapter = pci_get_drvdata(pdev);
2482         int status;
2483
2484         dev_info(&adapter->pdev->dev, "EEH reset\n");
2485         adapter->eeh_err = false;
2486
2487         status = pci_enable_device(pdev);
2488         if (status)
2489                 return PCI_ERS_RESULT_DISCONNECT;
2490
2491         pci_set_master(pdev);
2492         pci_set_power_state(pdev, 0);
2493         pci_restore_state(pdev);
2494
2495         /* Check if card is ok and fw is ready */
2496         status = be_cmd_POST(adapter);
2497         if (status)
2498                 return PCI_ERS_RESULT_DISCONNECT;
2499
2500         return PCI_ERS_RESULT_RECOVERED;
2501 }
2502
2503 static void be_eeh_resume(struct pci_dev *pdev)
2504 {
2505         int status = 0;
2506         struct be_adapter *adapter = pci_get_drvdata(pdev);
2507         struct net_device *netdev =  adapter->netdev;
2508
2509         dev_info(&adapter->pdev->dev, "EEH resume\n");
2510
2511         pci_save_state(pdev);
2512
2513         /* tell fw we're ready to fire cmds */
2514         status = be_cmd_fw_init(adapter);
2515         if (status)
2516                 goto err;
2517
2518         status = be_setup(adapter);
2519         if (status)
2520                 goto err;
2521
2522         if (netif_running(netdev)) {
2523                 status = be_open(netdev);
2524                 if (status)
2525                         goto err;
2526         }
2527         netif_device_attach(netdev);
2528         return;
2529 err:
2530         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2531         return;
2532 }
2533
2534 static struct pci_error_handlers be_eeh_handlers = {
2535         .error_detected = be_eeh_err_detected,
2536         .slot_reset = be_eeh_reset,
2537         .resume = be_eeh_resume,
2538 };
2539
2540 static struct pci_driver be_driver = {
2541         .name = DRV_NAME,
2542         .id_table = be_dev_ids,
2543         .probe = be_probe,
2544         .remove = be_remove,
2545         .suspend = be_suspend,
2546         .resume = be_resume,
2547         .err_handler = &be_eeh_handlers
2548 };
2549
2550 static int __init be_init_module(void)
2551 {
2552         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2553             rx_frag_size != 2048) {
2554                 printk(KERN_WARNING DRV_NAME
2555                         " : Module param rx_frag_size must be 2048/4096/8192."
2556                         " Using 2048\n");
2557                 rx_frag_size = 2048;
2558         }
2559
2560         return pci_register_driver(&be_driver);
2561 }
2562 module_init(be_init_module);
2563
2564 static void __exit be_exit_module(void)
2565 {
2566         pci_unregister_driver(&be_driver);
2567 }
2568 module_exit(be_exit_module);