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 {
 685         struct be_queue_info *rxq = &adapter->rx_obj.q;
 686         struct be_rx_page_info *page_info;
 687         u16 rxq_idx, i, num_rcvd, j;
 688         u32 pktsize, hdr_len, curr_frag_len, size;
 689         u8 *start;
 690
 691         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 692         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 693         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, 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         u8 vtm;
 770
 771         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 772         if (unlikely(!skb)) {
 773                 if (net_ratelimit())
 774                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 775                 be_rx_compl_discard(adapter, rxcp);
 776                 return;
 777         }
 778
 779         skb_fill_rx_data(adapter, skb, rxcp);
 780
 781         if (do_pkt_csum(rxcp, adapter->rx_csum))
 782                 skb->ip_summed = CHECKSUM_NONE;
 783         else
 784                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 785
 786         skb->truesize = skb->len + sizeof(struct sk_buff);
 787         skb->protocol = eth_type_trans(skb, adapter->netdev);
 788         skb->dev = adapter->netdev;
 789
 790         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 791         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 792
 793         /* vlanf could be wrongly set in some cards.
 794          * ignore if vtm is not set */
 795         if ((adapter->cap & 0x400) && !vtm)
 796                 vlanf = 0;
 797
 798         if (unlikely(vlanf)) {
 799                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 800                         kfree_skb(skb);
 801                         return;
 802                 }
 803                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 804                 vid = be16_to_cpu(vid);
 805                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 806         } else {
 807                 netif_receive_skb(skb);
 808         }
 809
 810         return;
 811 }
 812
 813 /* Process the RX completion indicated by rxcp when GRO is enabled */
 814 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 815                         struct be_eth_rx_compl *rxcp)
 816 {
 817         struct be_rx_page_info *page_info;
 818         struct sk_buff *skb = NULL;
 819         struct be_queue_info *rxq = &adapter->rx_obj.q;
 820         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 821         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 822         u16 i, rxq_idx = 0, vid, j;
 823         u8 vtm;
 824
 825         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 826         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 827         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 828         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 829         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 830
 831         /* vlanf could be wrongly set in some cards.
 832          * ignore if vtm is not set */
 833         if ((adapter->cap & 0x400) && !vtm)
 834                 vlanf = 0;
 835
 836         skb = napi_get_frags(&eq_obj->napi);
 837         if (!skb) {
 838                 be_rx_compl_discard(adapter, rxcp);
 839                 return;
 840         }
 841
 842         remaining = pkt_size;
 843         for (i = 0, j = -1; i < num_rcvd; i++) {
 844                 page_info = get_rx_page_info(adapter, rxq_idx);
 845
 846                 curr_frag_len = min(remaining, rx_frag_size);
 847
 848                 /* Coalesce all frags from the same physical page in one slot */
 849                 if (i == 0 || page_info->page_offset == 0) {
 850                         /* First frag or Fresh page */
 851                         j++;
 852                         skb_shinfo(skb)->frags[j].page = page_info->page;
 853                         skb_shinfo(skb)->frags[j].page_offset =
 854                                                         page_info->page_offset;
 855                         skb_shinfo(skb)->frags[j].size = 0;
 856                 } else {
 857                         put_page(page_info->page);
 858                 }
 859                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 860
 861                 remaining -= curr_frag_len;
 862                 index_inc(&rxq_idx, rxq->len);
 863                 memset(page_info, 0, sizeof(*page_info));
 864         }
 865         BUG_ON(j > MAX_SKB_FRAGS);
 866
 867         skb_shinfo(skb)->nr_frags = j + 1;
 868         skb->len = pkt_size;
 869         skb->data_len = pkt_size;
 870         skb->truesize += pkt_size;
 871         skb->ip_summed = CHECKSUM_UNNECESSARY;
 872
 873         if (likely(!vlanf)) {
 874                 napi_gro_frags(&eq_obj->napi);
 875         } else {
 876                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 877                 vid = be16_to_cpu(vid);
 878
 879                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 880                         return;
 881
 882                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 883         }
 884
 885         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 886         return;
 887 }
 888
 889 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 890 {
 891         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 892
 893         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 894                 return NULL;
 895
 896         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 897
 898         queue_tail_inc(&adapter->rx_obj.cq);
 899         return rxcp;
 900 }
 901
 902 /* To reset the valid bit, we need to reset the whole word as
 903  * when walking the queue the valid entries are little-endian
 904  * and invalid entries are host endian
 905  */
 906 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 907 {
 908         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 909 }
 910
 911 static inline struct page *be_alloc_pages(u32 size)
 912 {
 913         gfp_t alloc_flags = GFP_ATOMIC;
 914         u32 order = get_order(size);
 915         if (order > 0)
 916                 alloc_flags |= __GFP_COMP;
 917         return  alloc_pages(alloc_flags, order);
 918 }
 919
 920 /*
 921  * Allocate a page, split it to fragments of size rx_frag_size and post as
 922  * receive buffers to BE
 923  */
 924 static void be_post_rx_frags(struct be_adapter *adapter)
 925 {
 926         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 927         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 928         struct be_queue_info *rxq = &adapter->rx_obj.q;
 929         struct page *pagep = NULL;
 930         struct be_eth_rx_d *rxd;
 931         u64 page_dmaaddr = 0, frag_dmaaddr;
 932         u32 posted, page_offset = 0;
 933
 934         page_info = &page_info_tbl[rxq->head];
 935         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 936                 if (!pagep) {
 937                         pagep = be_alloc_pages(adapter->big_page_size);
 938                         if (unlikely(!pagep)) {
 939                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 940                                 break;
 941                         }
 942                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 943                                                 adapter->big_page_size,
 944                                                 PCI_DMA_FROMDEVICE);
 945                         page_info->page_offset = 0;
 946                 } else {
 947                         get_page(pagep);
 948                         page_info->page_offset = page_offset + rx_frag_size;
 949                 }
 950                 page_offset = page_info->page_offset;
 951                 page_info->page = pagep;
 952                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 953                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 954
 955                 rxd = queue_head_node(rxq);
 956                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 957                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 958
 959                 /* Any space left in the current big page for another frag? */
 960                 if ((page_offset + rx_frag_size + rx_frag_size) >
 961                                         adapter->big_page_size) {
 962                         pagep = NULL;
 963                         page_info->last_page_user = true;
 964                 }
 965
 966                 prev_page_info = page_info;
 967                 queue_head_inc(rxq);
 968                 page_info = &page_info_tbl[rxq->head];
 969         }
 970         if (pagep)
 971                 prev_page_info->last_page_user = true;
 972
 973         if (posted) {
 974                 atomic_add(posted, &rxq->used);
 975                 be_rxq_notify(adapter, rxq->id, posted);
 976         } else if (atomic_read(&rxq->used) == 0) {
 977                 /* Let be_worker replenish when memory is available */
 978                 adapter->rx_post_starved = true;
 979         }
 980
 981         return;
 982 }
 983
 984 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 985 {
 986         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 987
 988         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 989                 return NULL;
 990
 991         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 992
 993         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 994
 995         queue_tail_inc(tx_cq);
 996         return txcp;
 997 }
 998
 999 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1000 {
1001         struct be_queue_info *txq = &adapter->tx_obj.q;
1002         struct be_eth_wrb *wrb;
1003         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1004         struct sk_buff *sent_skb;
1005         u64 busaddr;
1006         u16 cur_index, num_wrbs = 0;
1007
1008         cur_index = txq->tail;
1009         sent_skb = sent_skbs[cur_index];
1010         BUG_ON(!sent_skb);
1011         sent_skbs[cur_index] = NULL;
1012         wrb = queue_tail_node(txq);
1013         be_dws_le_to_cpu(wrb, sizeof(*wrb));
1014         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1015         if (busaddr != 0) {
1016                 pci_unmap_single(adapter->pdev, busaddr,
1017                                  wrb->frag_len, PCI_DMA_TODEVICE);
1018         }
1019         num_wrbs++;
1020         queue_tail_inc(txq);
1021
1022         while (cur_index != last_index) {
1023                 cur_index = txq->tail;
1024                 wrb = queue_tail_node(txq);
1025                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1026                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1027                 if (busaddr != 0) {
1028                         pci_unmap_page(adapter->pdev, busaddr,
1029                                        wrb->frag_len, PCI_DMA_TODEVICE);
1030                 }
1031                 num_wrbs++;
1032                 queue_tail_inc(txq);
1033         }
1034
1035         atomic_sub(num_wrbs, &txq->used);
1036
1037         kfree_skb(sent_skb);
1038 }
1039
1040 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1041 {
1042         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1043
1044         if (!eqe->evt)
1045                 return NULL;
1046
1047         eqe->evt = le32_to_cpu(eqe->evt);
1048         queue_tail_inc(&eq_obj->q);
1049         return eqe;
1050 }
1051
1052 static int event_handle(struct be_adapter *adapter,
1053                         struct be_eq_obj *eq_obj)
1054 {
1055         struct be_eq_entry *eqe;
1056         u16 num = 0;
1057
1058         while ((eqe = event_get(eq_obj)) != NULL) {
1059                 eqe->evt = 0;
1060                 num++;
1061         }
1062
1063         /* Deal with any spurious interrupts that come
1064          * without events
1065          */
1066         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1067         if (num)
1068                 napi_schedule(&eq_obj->napi);
1069
1070         return num;
1071 }
1072
1073 /* Just read and notify events without processing them.
1074  * Used at the time of destroying event queues */
1075 static void be_eq_clean(struct be_adapter *adapter,
1076                         struct be_eq_obj *eq_obj)
1077 {
1078         struct be_eq_entry *eqe;
1079         u16 num = 0;
1080
1081         while ((eqe = event_get(eq_obj)) != NULL) {
1082                 eqe->evt = 0;
1083                 num++;
1084         }
1085
1086         if (num)
1087                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1088 }
1089
1090 static void be_rx_q_clean(struct be_adapter *adapter)
1091 {
1092         struct be_rx_page_info *page_info;
1093         struct be_queue_info *rxq = &adapter->rx_obj.q;
1094         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1095         struct be_eth_rx_compl *rxcp;
1096         u16 tail;
1097
1098         /* First cleanup pending rx completions */
1099         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1100                 be_rx_compl_discard(adapter, rxcp);
1101                 be_rx_compl_reset(rxcp);
1102                 be_cq_notify(adapter, rx_cq->id, true, 1);
1103         }
1104
1105         /* Then free posted rx buffer that were not used */
1106         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1107         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1108                 page_info = get_rx_page_info(adapter, tail);
1109                 put_page(page_info->page);
1110                 memset(page_info, 0, sizeof(*page_info));
1111         }
1112         BUG_ON(atomic_read(&rxq->used));
1113 }
1114
1115 static void be_tx_compl_clean(struct be_adapter *adapter)
1116 {
1117         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1118         struct be_queue_info *txq = &adapter->tx_obj.q;
1119         struct be_eth_tx_compl *txcp;
1120         u16 end_idx, cmpl = 0, timeo = 0;
1121
1122         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1123         do {
1124                 while ((txcp = be_tx_compl_get(tx_cq))) {
1125                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1126                                         wrb_index, txcp);
1127                         be_tx_compl_process(adapter, end_idx);
1128                         cmpl++;
1129                 }
1130                 if (cmpl) {
1131                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1132                         cmpl = 0;
1133                 }
1134
1135                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1136                         break;
1137
1138                 mdelay(1);
1139         } while (true);
1140
1141         if (atomic_read(&txq->used))
1142                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1143                         atomic_read(&txq->used));
1144 }
1145
1146 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1147 {
1148         struct be_queue_info *q;
1149
1150         q = &adapter->mcc_obj.q;
1151         if (q->created)
1152                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1153         be_queue_free(adapter, q);
1154
1155         q = &adapter->mcc_obj.cq;
1156         if (q->created)
1157                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1158         be_queue_free(adapter, q);
1159 }
1160
1161 /* Must be called only after TX qs are created as MCC shares TX EQ */
1162 static int be_mcc_queues_create(struct be_adapter *adapter)
1163 {
1164         struct be_queue_info *q, *cq;
1165
1166         /* Alloc MCC compl queue */
1167         cq = &adapter->mcc_obj.cq;
1168         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1169                         sizeof(struct be_mcc_compl)))
1170                 goto err;
1171
1172         /* Ask BE to create MCC compl queue; share TX's eq */
1173         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1174                 goto mcc_cq_free;
1175
1176         /* Alloc MCC queue */
1177         q = &adapter->mcc_obj.q;
1178         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1179                 goto mcc_cq_destroy;
1180
1181         /* Ask BE to create MCC queue */
1182         if (be_cmd_mccq_create(adapter, q, cq))
1183                 goto mcc_q_free;
1184
1185         return 0;
1186
1187 mcc_q_free:
1188         be_queue_free(adapter, q);
1189 mcc_cq_destroy:
1190         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1191 mcc_cq_free:
1192         be_queue_free(adapter, cq);
1193 err:
1194         return -1;
1195 }
1196
1197 static void be_tx_queues_destroy(struct be_adapter *adapter)
1198 {
1199         struct be_queue_info *q;
1200
1201         q = &adapter->tx_obj.q;
1202         if (q->created)
1203                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1204         be_queue_free(adapter, q);
1205
1206         q = &adapter->tx_obj.cq;
1207         if (q->created)
1208                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1209         be_queue_free(adapter, q);
1210
1211         /* Clear any residual events */
1212         be_eq_clean(adapter, &adapter->tx_eq);
1213
1214         q = &adapter->tx_eq.q;
1215         if (q->created)
1216                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1217         be_queue_free(adapter, q);
1218 }
1219
1220 static int be_tx_queues_create(struct be_adapter *adapter)
1221 {
1222         struct be_queue_info *eq, *q, *cq;
1223
1224         adapter->tx_eq.max_eqd = 0;
1225         adapter->tx_eq.min_eqd = 0;
1226         adapter->tx_eq.cur_eqd = 96;
1227         adapter->tx_eq.enable_aic = false;
1228         /* Alloc Tx Event queue */
1229         eq = &adapter->tx_eq.q;
1230         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1231                 return -1;
1232
1233         /* Ask BE to create Tx Event queue */
1234         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1235                 goto tx_eq_free;
1236         /* Alloc TX eth compl queue */
1237         cq = &adapter->tx_obj.cq;
1238         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1239                         sizeof(struct be_eth_tx_compl)))
1240                 goto tx_eq_destroy;
1241
1242         /* Ask BE to create Tx eth compl queue */
1243         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1244                 goto tx_cq_free;
1245
1246         /* Alloc TX eth queue */
1247         q = &adapter->tx_obj.q;
1248         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1249                 goto tx_cq_destroy;
1250
1251         /* Ask BE to create Tx eth queue */
1252         if (be_cmd_txq_create(adapter, q, cq))
1253                 goto tx_q_free;
1254         return 0;
1255
1256 tx_q_free:
1257         be_queue_free(adapter, q);
1258 tx_cq_destroy:
1259         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1260 tx_cq_free:
1261         be_queue_free(adapter, cq);
1262 tx_eq_destroy:
1263         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1264 tx_eq_free:
1265         be_queue_free(adapter, eq);
1266         return -1;
1267 }
1268
1269 static void be_rx_queues_destroy(struct be_adapter *adapter)
1270 {
1271         struct be_queue_info *q;
1272
1273         q = &adapter->rx_obj.q;
1274         if (q->created) {
1275                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1276                 be_rx_q_clean(adapter);
1277         }
1278         be_queue_free(adapter, q);
1279
1280         q = &adapter->rx_obj.cq;
1281         if (q->created)
1282                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1283         be_queue_free(adapter, q);
1284
1285         /* Clear any residual events */
1286         be_eq_clean(adapter, &adapter->rx_eq);
1287
1288         q = &adapter->rx_eq.q;
1289         if (q->created)
1290                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1291         be_queue_free(adapter, q);
1292 }
1293
1294 static int be_rx_queues_create(struct be_adapter *adapter)
1295 {
1296         struct be_queue_info *eq, *q, *cq;
1297         int rc;
1298
1299         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1300         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1301         adapter->rx_eq.min_eqd = 0;
1302         adapter->rx_eq.cur_eqd = 0;
1303         adapter->rx_eq.enable_aic = true;
1304
1305         /* Alloc Rx Event queue */
1306         eq = &adapter->rx_eq.q;
1307         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1308                                 sizeof(struct be_eq_entry));
1309         if (rc)
1310                 return rc;
1311
1312         /* Ask BE to create Rx Event queue */
1313         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1314         if (rc)
1315                 goto rx_eq_free;
1316
1317         /* Alloc RX eth compl queue */
1318         cq = &adapter->rx_obj.cq;
1319         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1320                         sizeof(struct be_eth_rx_compl));
1321         if (rc)
1322                 goto rx_eq_destroy;
1323
1324         /* Ask BE to create Rx eth compl queue */
1325         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1326         if (rc)
1327                 goto rx_cq_free;
1328
1329         /* Alloc RX eth queue */
1330         q = &adapter->rx_obj.q;
1331         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1332         if (rc)
1333                 goto rx_cq_destroy;
1334
1335         /* Ask BE to create Rx eth queue */
1336         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1337                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1338         if (rc)
1339                 goto rx_q_free;
1340
1341         return 0;
1342 rx_q_free:
1343         be_queue_free(adapter, q);
1344 rx_cq_destroy:
1345         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1346 rx_cq_free:
1347         be_queue_free(adapter, cq);
1348 rx_eq_destroy:
1349         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1350 rx_eq_free:
1351         be_queue_free(adapter, eq);
1352         return rc;
1353 }
1354
1355 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1356 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1357 {
1358         return eq_id - 8 * be_pci_func(adapter);
1359 }
1360
1361 static irqreturn_t be_intx(int irq, void *dev)
1362 {
1363         struct be_adapter *adapter = dev;
1364         int isr;
1365
1366         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1367                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1368         if (!isr)
1369                 return IRQ_NONE;
1370
1371         event_handle(adapter, &adapter->tx_eq);
1372         event_handle(adapter, &adapter->rx_eq);
1373
1374         return IRQ_HANDLED;
1375 }
1376
1377 static irqreturn_t be_msix_rx(int irq, void *dev)
1378 {
1379         struct be_adapter *adapter = dev;
1380
1381         event_handle(adapter, &adapter->rx_eq);
1382
1383         return IRQ_HANDLED;
1384 }
1385
1386 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1387 {
1388         struct be_adapter *adapter = dev;
1389
1390         event_handle(adapter, &adapter->tx_eq);
1391
1392         return IRQ_HANDLED;
1393 }
1394
1395 static inline bool do_gro(struct be_adapter *adapter,
1396                         struct be_eth_rx_compl *rxcp)
1397 {
1398         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1399         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1400
1401         if (err)
1402                 drvr_stats(adapter)->be_rxcp_err++;
1403
1404         return (tcp_frame && !err) ? true : false;
1405 }
1406
1407 int be_poll_rx(struct napi_struct *napi, int budget)
1408 {
1409         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1410         struct be_adapter *adapter =
1411                 container_of(rx_eq, struct be_adapter, rx_eq);
1412         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1413         struct be_eth_rx_compl *rxcp;
1414         u32 work_done;
1415
1416         adapter->stats.drvr_stats.be_rx_polls++;
1417         for (work_done = 0; work_done < budget; work_done++) {
1418                 rxcp = be_rx_compl_get(adapter);
1419                 if (!rxcp)
1420                         break;
1421
1422                 if (do_gro(adapter, rxcp))
1423                         be_rx_compl_process_gro(adapter, rxcp);
1424                 else
1425                         be_rx_compl_process(adapter, rxcp);
1426
1427                 be_rx_compl_reset(rxcp);
1428         }
1429
1430         /* Refill the queue */
1431         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1432                 be_post_rx_frags(adapter);
1433
1434         /* All consumed */
1435         if (work_done < budget) {
1436                 napi_complete(napi);
1437                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1438         } else {
1439                 /* More to be consumed; continue with interrupts disabled */
1440                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1441         }
1442         return work_done;
1443 }
1444
1445 void be_process_tx(struct be_adapter *adapter)
1446 {
1447         struct be_queue_info *txq = &adapter->tx_obj.q;
1448         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1449         struct be_eth_tx_compl *txcp;
1450         u32 num_cmpl = 0;
1451         u16 end_idx;
1452
1453         while ((txcp = be_tx_compl_get(tx_cq))) {
1454                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1455                                         wrb_index, txcp);
1456                 be_tx_compl_process(adapter, end_idx);
1457                 num_cmpl++;
1458         }
1459
1460         if (num_cmpl) {
1461                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1462
1463                 /* As Tx wrbs have been freed up, wake up netdev queue if
1464                  * it was stopped due to lack of tx wrbs.
1465                  */
1466                 if (netif_queue_stopped(adapter->netdev) &&
1467                         atomic_read(&txq->used) < txq->len / 2) {
1468                         netif_wake_queue(adapter->netdev);
1469                 }
1470
1471                 drvr_stats(adapter)->be_tx_events++;
1472                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1473         }
1474 }
1475
1476 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1477  * For TX/MCC we don't honour budget; consume everything
1478  */
1479 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1480 {
1481         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1482         struct be_adapter *adapter =
1483                 container_of(tx_eq, struct be_adapter, tx_eq);
1484
1485         napi_complete(napi);
1486
1487         be_process_tx(adapter);
1488
1489         be_process_mcc(adapter);
1490
1491         return 1;
1492 }
1493
1494 static void be_worker(struct work_struct *work)
1495 {
1496         struct be_adapter *adapter =
1497                 container_of(work, struct be_adapter, work.work);
1498
1499         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1500
1501         /* Set EQ delay */
1502         be_rx_eqd_update(adapter);
1503
1504         be_tx_rate_update(adapter);
1505         be_rx_rate_update(adapter);
1506
1507         if (adapter->rx_post_starved) {
1508                 adapter->rx_post_starved = false;
1509                 be_post_rx_frags(adapter);
1510         }
1511
1512         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1513 }
1514
1515 static void be_msix_disable(struct be_adapter *adapter)
1516 {
1517         if (adapter->msix_enabled) {
1518                 pci_disable_msix(adapter->pdev);
1519                 adapter->msix_enabled = false;
1520         }
1521 }
1522
1523 static void be_msix_enable(struct be_adapter *adapter)
1524 {
1525         int i, status;
1526
1527         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1528                 adapter->msix_entries[i].entry = i;
1529
1530         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1531                 BE_NUM_MSIX_VECTORS);
1532         if (status == 0)
1533                 adapter->msix_enabled = true;
1534         return;
1535 }
1536
1537 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1538 {
1539         return adapter->msix_entries[
1540                         be_evt_bit_get(adapter, eq_id)].vector;
1541 }
1542
1543 static int be_request_irq(struct be_adapter *adapter,
1544                 struct be_eq_obj *eq_obj,
1545                 void *handler, char *desc)
1546 {
1547         struct net_device *netdev = adapter->netdev;
1548         int vec;
1549
1550         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1551         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1552         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1553 }
1554
1555 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1556 {
1557         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1558         free_irq(vec, adapter);
1559 }
1560
1561 static int be_msix_register(struct be_adapter *adapter)
1562 {
1563         int status;
1564
1565         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1566         if (status)
1567                 goto err;
1568
1569         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1570         if (status)
1571                 goto free_tx_irq;
1572
1573         return 0;
1574
1575 free_tx_irq:
1576         be_free_irq(adapter, &adapter->tx_eq);
1577 err:
1578         dev_warn(&adapter->pdev->dev,
1579                 "MSIX Request IRQ failed - err %d\n", status);
1580         pci_disable_msix(adapter->pdev);
1581         adapter->msix_enabled = false;
1582         return status;
1583 }
1584
1585 static int be_irq_register(struct be_adapter *adapter)
1586 {
1587         struct net_device *netdev = adapter->netdev;
1588         int status;
1589
1590         if (adapter->msix_enabled) {
1591                 status = be_msix_register(adapter);
1592                 if (status == 0)
1593                         goto done;
1594         }
1595
1596         /* INTx */
1597         netdev->irq = adapter->pdev->irq;
1598         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1599                         adapter);
1600         if (status) {
1601                 dev_err(&adapter->pdev->dev,
1602                         "INTx request IRQ failed - err %d\n", status);
1603                 return status;
1604         }
1605 done:
1606         adapter->isr_registered = true;
1607         return 0;
1608 }
1609
1610 static void be_irq_unregister(struct be_adapter *adapter)
1611 {
1612         struct net_device *netdev = adapter->netdev;
1613
1614         if (!adapter->isr_registered)
1615                 return;
1616
1617         /* INTx */
1618         if (!adapter->msix_enabled) {
1619                 free_irq(netdev->irq, adapter);
1620                 goto done;
1621         }
1622
1623         /* MSIx */
1624         be_free_irq(adapter, &adapter->tx_eq);
1625         be_free_irq(adapter, &adapter->rx_eq);
1626 done:
1627         adapter->isr_registered = false;
1628         return;
1629 }
1630
1631 static int be_open(struct net_device *netdev)
1632 {
1633         struct be_adapter *adapter = netdev_priv(netdev);
1634         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1635         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1636         bool link_up;
1637         int status;
1638         u8 mac_speed;
1639         u16 link_speed;
1640
1641         /* First time posting */
1642         be_post_rx_frags(adapter);
1643
1644         napi_enable(&rx_eq->napi);
1645         napi_enable(&tx_eq->napi);
1646
1647         be_irq_register(adapter);
1648
1649         be_intr_set(adapter, true);
1650
1651         /* The evt queues are created in unarmed state; arm them */
1652         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1653         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1654
1655         /* Rx compl queue may be in unarmed state; rearm it */
1656         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1657
1658         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1659                         &link_speed);
1660         if (status)
1661                 goto ret_sts;
1662         be_link_status_update(adapter, link_up);
1663
1664         status = be_vid_config(adapter);
1665         if (status)
1666                 goto ret_sts;
1667
1668         status = be_cmd_set_flow_control(adapter,
1669                                         adapter->tx_fc, adapter->rx_fc);
1670         if (status)
1671                 goto ret_sts;
1672
1673         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1674 ret_sts:
1675         return status;
1676 }
1677
1678 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1679 {
1680         struct be_dma_mem cmd;
1681         int status = 0;
1682         u8 mac[ETH_ALEN];
1683
1684         memset(mac, 0, ETH_ALEN);
1685
1686         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1687         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1688         if (cmd.va == NULL)
1689                 return -1;
1690         memset(cmd.va, 0, cmd.size);
1691
1692         if (enable) {
1693                 status = pci_write_config_dword(adapter->pdev,
1694                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1695                 if (status) {
1696                         dev_err(&adapter->pdev->dev,
1697                                 "Could not enable Wake-on-lan \n");
1698                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1699                                         cmd.dma);
1700                         return status;
1701                 }
1702                 status = be_cmd_enable_magic_wol(adapter,
1703                                 adapter->netdev->dev_addr, &cmd);
1704                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1705                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1706         } else {
1707                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1708                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1709                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1710         }
1711
1712         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1713         return status;
1714 }
1715
1716 static int be_setup(struct be_adapter *adapter)
1717 {
1718         struct net_device *netdev = adapter->netdev;
1719         u32 cap_flags, en_flags;
1720         int status;
1721
1722         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1723                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1724                         BE_IF_FLAGS_PROMISCUOUS |
1725                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1726         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1727                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1728
1729         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1730                         netdev->dev_addr, false/* pmac_invalid */,
1731                         &adapter->if_handle, &adapter->pmac_id);
1732         if (status != 0)
1733                 goto do_none;
1734
1735         status = be_tx_queues_create(adapter);
1736         if (status != 0)
1737                 goto if_destroy;
1738
1739         status = be_rx_queues_create(adapter);
1740         if (status != 0)
1741                 goto tx_qs_destroy;
1742
1743         status = be_mcc_queues_create(adapter);
1744         if (status != 0)
1745                 goto rx_qs_destroy;
1746
1747         adapter->link_speed = -1;
1748
1749         return 0;
1750
1751 rx_qs_destroy:
1752         be_rx_queues_destroy(adapter);
1753 tx_qs_destroy:
1754         be_tx_queues_destroy(adapter);
1755 if_destroy:
1756         be_cmd_if_destroy(adapter, adapter->if_handle);
1757 do_none:
1758         return status;
1759 }
1760
1761 static int be_clear(struct be_adapter *adapter)
1762 {
1763         be_mcc_queues_destroy(adapter);
1764         be_rx_queues_destroy(adapter);
1765         be_tx_queues_destroy(adapter);
1766
1767         be_cmd_if_destroy(adapter, adapter->if_handle);
1768
1769         /* tell fw we're done with firing cmds */
1770         be_cmd_fw_clean(adapter);
1771         return 0;
1772 }
1773
1774 static int be_close(struct net_device *netdev)
1775 {
1776         struct be_adapter *adapter = netdev_priv(netdev);
1777         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1778         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1779         int vec;
1780
1781         cancel_delayed_work_sync(&adapter->work);
1782
1783         netif_stop_queue(netdev);
1784         netif_carrier_off(netdev);
1785         adapter->link_up = false;
1786
1787         be_intr_set(adapter, false);
1788
1789         if (adapter->msix_enabled) {
1790                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1791                 synchronize_irq(vec);
1792                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1793                 synchronize_irq(vec);
1794         } else {
1795                 synchronize_irq(netdev->irq);
1796         }
1797         be_irq_unregister(adapter);
1798
1799         napi_disable(&rx_eq->napi);
1800         napi_disable(&tx_eq->napi);
1801
1802         /* Wait for all pending tx completions to arrive so that
1803          * all tx skbs are freed.
1804          */
1805         be_tx_compl_clean(adapter);
1806
1807         return 0;
1808 }
1809
1810 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1811 char flash_cookie[2][16] =      {"*** SE FLAS",
1812                                 "H DIRECTORY *** "};
1813
1814 static bool be_flash_redboot(struct be_adapter *adapter,
1815                         const u8 *p, u32 img_start, int image_size,
1816                         int hdr_size)
1817 {
1818         u32 crc_offset;
1819         u8 flashed_crc[4];
1820         int status;
1821
1822         crc_offset = hdr_size + img_start + image_size - 4;
1823
1824         p += crc_offset;
1825
1826         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1827                         (img_start + image_size - 4));
1828         if (status) {
1829                 dev_err(&adapter->pdev->dev,
1830                 "could not get crc from flash, not flashing redboot\n");
1831                 return false;
1832         }
1833
1834         /*update redboot only if crc does not match*/
1835         if (!memcmp(flashed_crc, p, 4))
1836                 return false;
1837         else
1838                 return true;
1839 }
1840
1841 static int be_flash_data(struct be_adapter *adapter,
1842                         const struct firmware *fw,
1843                         struct be_dma_mem *flash_cmd, int num_of_images)
1844
1845 {
1846         int status = 0, i, filehdr_size = 0;
1847         u32 total_bytes = 0, flash_op;
1848         int num_bytes;
1849         const u8 *p = fw->data;
1850         struct be_cmd_write_flashrom *req = flash_cmd->va;
1851         struct flash_comp *pflashcomp;
1852
1853         struct flash_comp gen3_flash_types[8] = {
1854                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1855                         FLASH_IMAGE_MAX_SIZE_g3},
1856                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1857                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1858                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1859                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1860                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1861                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1862                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1863                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1864                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1865                         FLASH_IMAGE_MAX_SIZE_g3},
1866                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1867                         FLASH_IMAGE_MAX_SIZE_g3},
1868                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1869                         FLASH_IMAGE_MAX_SIZE_g3}
1870         };
1871         struct flash_comp gen2_flash_types[8] = {
1872                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1873                         FLASH_IMAGE_MAX_SIZE_g2},
1874                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1875                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1876                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1877                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1878                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1879                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1880                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1881                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1882                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1883                         FLASH_IMAGE_MAX_SIZE_g2},
1884                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1885                         FLASH_IMAGE_MAX_SIZE_g2},
1886                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1887                          FLASH_IMAGE_MAX_SIZE_g2}
1888         };
1889
1890         if (adapter->generation == BE_GEN3) {
1891                 pflashcomp = gen3_flash_types;
1892                 filehdr_size = sizeof(struct flash_file_hdr_g3);
1893         } else {
1894                 pflashcomp = gen2_flash_types;
1895                 filehdr_size = sizeof(struct flash_file_hdr_g2);
1896         }
1897         for (i = 0; i < 8; i++) {
1898                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1899                         (!be_flash_redboot(adapter, fw->data,
1900                          pflashcomp[i].offset, pflashcomp[i].size,
1901                          filehdr_size)))
1902                         continue;
1903                 p = fw->data;
1904                 p += filehdr_size + pflashcomp[i].offset
1905                         + (num_of_images * sizeof(struct image_hdr));
1906         if (p + pflashcomp[i].size > fw->data + fw->size)
1907                 return -1;
1908         total_bytes = pflashcomp[i].size;
1909                 while (total_bytes) {
1910                         if (total_bytes > 32*1024)
1911                                 num_bytes = 32*1024;
1912                         else
1913                                 num_bytes = total_bytes;
1914                         total_bytes -= num_bytes;
1915
1916                         if (!total_bytes)
1917                                 flash_op = FLASHROM_OPER_FLASH;
1918                         else
1919                                 flash_op = FLASHROM_OPER_SAVE;
1920                         memcpy(req->params.data_buf, p, num_bytes);
1921                         p += num_bytes;
1922                         status = be_cmd_write_flashrom(adapter, flash_cmd,
1923                                 pflashcomp[i].optype, flash_op, num_bytes);
1924                         if (status) {
1925                                 dev_err(&adapter->pdev->dev,
1926                                         "cmd to write to flash rom failed.\n");
1927                                 return -1;
1928                         }
1929                         yield();
1930                 }
1931         }
1932         return 0;
1933 }
1934
1935 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
1936 {
1937         if (fhdr == NULL)
1938                 return 0;
1939         if (fhdr->build[0] == '3')
1940                 return BE_GEN3;
1941         else if (fhdr->build[0] == '2')
1942                 return BE_GEN2;
1943         else
1944                 return 0;
1945 }
1946
1947 int be_load_fw(struct be_adapter *adapter, u8 *func)
1948 {
1949         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1950         const struct firmware *fw;
1951         struct flash_file_hdr_g2 *fhdr;
1952         struct flash_file_hdr_g3 *fhdr3;
1953         struct image_hdr *img_hdr_ptr = NULL;
1954         struct be_dma_mem flash_cmd;
1955         int status, i = 0;
1956         const u8 *p;
1957         char fw_ver[FW_VER_LEN];
1958         char fw_cfg;
1959
1960         status = be_cmd_get_fw_ver(adapter, fw_ver);
1961         if (status)
1962                 return status;
1963
1964         fw_cfg = *(fw_ver + 2);
1965         if (fw_cfg == '0')
1966                 fw_cfg = '1';
1967         strcpy(fw_file, func);
1968
1969         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1970         if (status)
1971                 goto fw_exit;
1972
1973         p = fw->data;
1974         fhdr = (struct flash_file_hdr_g2 *) p;
1975         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1976
1977         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1978         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1979                                         &flash_cmd.dma);
1980         if (!flash_cmd.va) {
1981                 status = -ENOMEM;
1982                 dev_err(&adapter->pdev->dev,
1983                         "Memory allocation failure while flashing\n");
1984                 goto fw_exit;
1985         }
1986
1987         if ((adapter->generation == BE_GEN3) &&
1988                         (get_ufigen_type(fhdr) == BE_GEN3)) {
1989                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
1990                 for (i = 0; i < fhdr3->num_imgs; i++) {
1991                         img_hdr_ptr = (struct image_hdr *) (fw->data +
1992                                         (sizeof(struct flash_file_hdr_g3) +
1993                                         i * sizeof(struct image_hdr)));
1994                         if (img_hdr_ptr->imageid == 1) {
1995                                 status = be_flash_data(adapter, fw,
1996                                                 &flash_cmd, fhdr3->num_imgs);
1997                         }
1998
1999                 }
2000         } else if ((adapter->generation == BE_GEN2) &&
2001                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2002                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2003         } else {
2004                 dev_err(&adapter->pdev->dev,
2005                         "UFI and Interface are not compatible for flashing\n");
2006                 status = -1;
2007         }
2008
2009         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2010                                 flash_cmd.dma);
2011         if (status) {
2012                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2013                 goto fw_exit;
2014         }
2015
2016         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2017
2018 fw_exit:
2019         release_firmware(fw);
2020         return status;
2021 }
2022
2023 static struct net_device_ops be_netdev_ops = {
2024         .ndo_open               = be_open,
2025         .ndo_stop               = be_close,
2026         .ndo_start_xmit         = be_xmit,
2027         .ndo_get_stats          = be_get_stats,
2028         .ndo_set_rx_mode        = be_set_multicast_list,
2029         .ndo_set_mac_address    = be_mac_addr_set,
2030         .ndo_change_mtu         = be_change_mtu,
2031         .ndo_validate_addr      = eth_validate_addr,
2032         .ndo_vlan_rx_register   = be_vlan_register,
2033         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2034         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2035 };
2036
2037 static void be_netdev_init(struct net_device *netdev)
2038 {
2039         struct be_adapter *adapter = netdev_priv(netdev);
2040
2041         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2042                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2043                 NETIF_F_GRO;
2044
2045         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2046
2047         netdev->flags |= IFF_MULTICAST;
2048
2049         adapter->rx_csum = true;
2050
2051         /* Default settings for Rx and Tx flow control */
2052         adapter->rx_fc = true;
2053         adapter->tx_fc = true;
2054
2055         netif_set_gso_max_size(netdev, 65535);
2056
2057         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2058
2059         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2060
2061         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2062                 BE_NAPI_WEIGHT);
2063         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2064                 BE_NAPI_WEIGHT);
2065
2066         netif_carrier_off(netdev);
2067         netif_stop_queue(netdev);
2068 }
2069
2070 static void be_unmap_pci_bars(struct be_adapter *adapter)
2071 {
2072         if (adapter->csr)
2073                 iounmap(adapter->csr);
2074         if (adapter->db)
2075                 iounmap(adapter->db);
2076         if (adapter->pcicfg)
2077                 iounmap(adapter->pcicfg);
2078 }
2079
2080 static int be_map_pci_bars(struct be_adapter *adapter)
2081 {
2082         u8 __iomem *addr;
2083         int pcicfg_reg;
2084
2085         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2086                         pci_resource_len(adapter->pdev, 2));
2087         if (addr == NULL)
2088                 return -ENOMEM;
2089         adapter->csr = addr;
2090
2091         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2092                         128 * 1024);
2093         if (addr == NULL)
2094                 goto pci_map_err;
2095         adapter->db = addr;
2096
2097         if (adapter->generation == BE_GEN2)
2098                 pcicfg_reg = 1;
2099         else
2100                 pcicfg_reg = 0;
2101
2102         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2103                         pci_resource_len(adapter->pdev, pcicfg_reg));
2104         if (addr == NULL)
2105                 goto pci_map_err;
2106         adapter->pcicfg = addr;
2107
2108         return 0;
2109 pci_map_err:
2110         be_unmap_pci_bars(adapter);
2111         return -ENOMEM;
2112 }
2113
2114
2115 static void be_ctrl_cleanup(struct be_adapter *adapter)
2116 {
2117         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2118
2119         be_unmap_pci_bars(adapter);
2120
2121         if (mem->va)
2122                 pci_free_consistent(adapter->pdev, mem->size,
2123                         mem->va, mem->dma);
2124
2125         mem = &adapter->mc_cmd_mem;
2126         if (mem->va)
2127                 pci_free_consistent(adapter->pdev, mem->size,
2128                         mem->va, mem->dma);
2129 }
2130
2131 static int be_ctrl_init(struct be_adapter *adapter)
2132 {
2133         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2134         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2135         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2136         int status;
2137
2138         status = be_map_pci_bars(adapter);
2139         if (status)
2140                 goto done;
2141
2142         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2143         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2144                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2145         if (!mbox_mem_alloc->va) {
2146                 status = -ENOMEM;
2147                 goto unmap_pci_bars;
2148         }
2149
2150         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2151         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2152         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2153         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2154
2155         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2156         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2157                         &mc_cmd_mem->dma);
2158         if (mc_cmd_mem->va == NULL) {
2159                 status = -ENOMEM;
2160                 goto free_mbox;
2161         }
2162         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2163
2164         spin_lock_init(&adapter->mbox_lock);
2165         spin_lock_init(&adapter->mcc_lock);
2166         spin_lock_init(&adapter->mcc_cq_lock);
2167
2168         pci_save_state(adapter->pdev);
2169         return 0;
2170
2171 free_mbox:
2172         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2173                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2174
2175 unmap_pci_bars:
2176         be_unmap_pci_bars(adapter);
2177
2178 done:
2179         return status;
2180 }
2181
2182 static void be_stats_cleanup(struct be_adapter *adapter)
2183 {
2184         struct be_stats_obj *stats = &adapter->stats;
2185         struct be_dma_mem *cmd = &stats->cmd;
2186
2187         if (cmd->va)
2188                 pci_free_consistent(adapter->pdev, cmd->size,
2189                         cmd->va, cmd->dma);
2190 }
2191
2192 static int be_stats_init(struct be_adapter *adapter)
2193 {
2194         struct be_stats_obj *stats = &adapter->stats;
2195         struct be_dma_mem *cmd = &stats->cmd;
2196
2197         cmd->size = sizeof(struct be_cmd_req_get_stats);
2198         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2199         if (cmd->va == NULL)
2200                 return -1;
2201         memset(cmd->va, 0, cmd->size);
2202         return 0;
2203 }
2204
2205 static void __devexit be_remove(struct pci_dev *pdev)
2206 {
2207         struct be_adapter *adapter = pci_get_drvdata(pdev);
2208
2209         if (!adapter)
2210                 return;
2211
2212         unregister_netdev(adapter->netdev);
2213
2214         be_clear(adapter);
2215
2216         be_stats_cleanup(adapter);
2217
2218         be_ctrl_cleanup(adapter);
2219
2220         be_msix_disable(adapter);
2221
2222         pci_set_drvdata(pdev, NULL);
2223         pci_release_regions(pdev);
2224         pci_disable_device(pdev);
2225
2226         free_netdev(adapter->netdev);
2227 }
2228
2229 static int be_get_config(struct be_adapter *adapter)
2230 {
2231         int status;
2232         u8 mac[ETH_ALEN];
2233
2234         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2235         if (status)
2236                 return status;
2237
2238         status = be_cmd_query_fw_cfg(adapter,
2239                                 &adapter->port_num, &adapter->cap);
2240         if (status)
2241                 return status;
2242
2243         memset(mac, 0, ETH_ALEN);
2244         status = be_cmd_mac_addr_query(adapter, mac,
2245                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2246         if (status)
2247                 return status;
2248
2249         if (!is_valid_ether_addr(mac))
2250                 return -EADDRNOTAVAIL;
2251
2252         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2253         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2254
2255         if (adapter->cap & 0x400)
2256                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2257         else
2258                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2259
2260         return 0;
2261 }
2262
2263 static int __devinit be_probe(struct pci_dev *pdev,
2264                         const struct pci_device_id *pdev_id)
2265 {
2266         int status = 0;
2267         struct be_adapter *adapter;
2268         struct net_device *netdev;
2269
2270         status = pci_enable_device(pdev);
2271         if (status)
2272                 goto do_none;
2273
2274         status = pci_request_regions(pdev, DRV_NAME);
2275         if (status)
2276                 goto disable_dev;
2277         pci_set_master(pdev);
2278
2279         netdev = alloc_etherdev(sizeof(struct be_adapter));
2280         if (netdev == NULL) {
2281                 status = -ENOMEM;
2282                 goto rel_reg;
2283         }
2284         adapter = netdev_priv(netdev);
2285
2286         switch (pdev->device) {
2287         case BE_DEVICE_ID1:
2288         case OC_DEVICE_ID1:
2289                 adapter->generation = BE_GEN2;
2290                 break;
2291         case BE_DEVICE_ID2:
2292         case OC_DEVICE_ID2:
2293                 adapter->generation = BE_GEN3;
2294                 break;
2295         default:
2296                 adapter->generation = 0;
2297         }
2298
2299         adapter->pdev = pdev;
2300         pci_set_drvdata(pdev, adapter);
2301         adapter->netdev = netdev;
2302         be_netdev_init(netdev);
2303         SET_NETDEV_DEV(netdev, &pdev->dev);
2304
2305         be_msix_enable(adapter);
2306
2307         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2308         if (!status) {
2309                 netdev->features |= NETIF_F_HIGHDMA;
2310         } else {
2311                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2312                 if (status) {
2313                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2314                         goto free_netdev;
2315                 }
2316         }
2317
2318         status = be_ctrl_init(adapter);
2319         if (status)
2320                 goto free_netdev;
2321
2322         /* sync up with fw's ready state */
2323         status = be_cmd_POST(adapter);
2324         if (status)
2325                 goto ctrl_clean;
2326
2327         /* tell fw we're ready to fire cmds */
2328         status = be_cmd_fw_init(adapter);
2329         if (status)
2330                 goto ctrl_clean;
2331
2332         status = be_cmd_reset_function(adapter);
2333         if (status)
2334                 goto ctrl_clean;
2335
2336         status = be_stats_init(adapter);
2337         if (status)
2338                 goto ctrl_clean;
2339
2340         status = be_get_config(adapter);
2341         if (status)
2342                 goto stats_clean;
2343
2344         INIT_DELAYED_WORK(&adapter->work, be_worker);
2345
2346         status = be_setup(adapter);
2347         if (status)
2348                 goto stats_clean;
2349
2350         status = register_netdev(netdev);
2351         if (status != 0)
2352                 goto unsetup;
2353
2354         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2355         return 0;
2356
2357 unsetup:
2358         be_clear(adapter);
2359 stats_clean:
2360         be_stats_cleanup(adapter);
2361 ctrl_clean:
2362         be_ctrl_cleanup(adapter);
2363 free_netdev:
2364         be_msix_disable(adapter);
2365         free_netdev(adapter->netdev);
2366         pci_set_drvdata(pdev, NULL);
2367 rel_reg:
2368         pci_release_regions(pdev);
2369 disable_dev:
2370         pci_disable_device(pdev);
2371 do_none:
2372         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2373         return status;
2374 }
2375
2376 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2377 {
2378         struct be_adapter *adapter = pci_get_drvdata(pdev);
2379         struct net_device *netdev =  adapter->netdev;
2380
2381         if (adapter->wol)
2382                 be_setup_wol(adapter, true);
2383
2384         netif_device_detach(netdev);
2385         if (netif_running(netdev)) {
2386                 rtnl_lock();
2387                 be_close(netdev);
2388                 rtnl_unlock();
2389         }
2390         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2391         be_clear(adapter);
2392
2393         pci_save_state(pdev);
2394         pci_disable_device(pdev);
2395         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2396         return 0;
2397 }
2398
2399 static int be_resume(struct pci_dev *pdev)
2400 {
2401         int status = 0;
2402         struct be_adapter *adapter = pci_get_drvdata(pdev);
2403         struct net_device *netdev =  adapter->netdev;
2404
2405         netif_device_detach(netdev);
2406
2407         status = pci_enable_device(pdev);
2408         if (status)
2409                 return status;
2410
2411         pci_set_power_state(pdev, 0);
2412         pci_restore_state(pdev);
2413
2414         /* tell fw we're ready to fire cmds */
2415         status = be_cmd_fw_init(adapter);
2416         if (status)
2417                 return status;
2418
2419         be_setup(adapter);
2420         if (netif_running(netdev)) {
2421                 rtnl_lock();
2422                 be_open(netdev);
2423                 rtnl_unlock();
2424         }
2425         netif_device_attach(netdev);
2426
2427         if (adapter->wol)
2428                 be_setup_wol(adapter, false);
2429         return 0;
2430 }
2431
2432 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2433                                 pci_channel_state_t state)
2434 {
2435         struct be_adapter *adapter = pci_get_drvdata(pdev);
2436         struct net_device *netdev =  adapter->netdev;
2437
2438         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2439
2440         adapter->eeh_err = true;
2441
2442         netif_device_detach(netdev);
2443
2444         if (netif_running(netdev)) {
2445                 rtnl_lock();
2446                 be_close(netdev);
2447                 rtnl_unlock();
2448         }
2449         be_clear(adapter);
2450
2451         if (state == pci_channel_io_perm_failure)
2452                 return PCI_ERS_RESULT_DISCONNECT;
2453
2454         pci_disable_device(pdev);
2455
2456         return PCI_ERS_RESULT_NEED_RESET;
2457 }
2458
2459 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2460 {
2461         struct be_adapter *adapter = pci_get_drvdata(pdev);
2462         int status;
2463
2464         dev_info(&adapter->pdev->dev, "EEH reset\n");
2465         adapter->eeh_err = false;
2466
2467         status = pci_enable_device(pdev);
2468         if (status)
2469                 return PCI_ERS_RESULT_DISCONNECT;
2470
2471         pci_set_master(pdev);
2472         pci_set_power_state(pdev, 0);
2473         pci_restore_state(pdev);
2474
2475         /* Check if card is ok and fw is ready */
2476         status = be_cmd_POST(adapter);
2477         if (status)
2478                 return PCI_ERS_RESULT_DISCONNECT;
2479
2480         return PCI_ERS_RESULT_RECOVERED;
2481 }
2482
2483 static void be_eeh_resume(struct pci_dev *pdev)
2484 {
2485         int status = 0;
2486         struct be_adapter *adapter = pci_get_drvdata(pdev);
2487         struct net_device *netdev =  adapter->netdev;
2488
2489         dev_info(&adapter->pdev->dev, "EEH resume\n");
2490
2491         pci_save_state(pdev);
2492
2493         /* tell fw we're ready to fire cmds */
2494         status = be_cmd_fw_init(adapter);
2495         if (status)
2496                 goto err;
2497
2498         status = be_setup(adapter);
2499         if (status)
2500                 goto err;
2501
2502         if (netif_running(netdev)) {
2503                 status = be_open(netdev);
2504                 if (status)
2505                         goto err;
2506         }
2507         netif_device_attach(netdev);
2508         return;
2509 err:
2510         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2511         return;
2512 }
2513
2514 static struct pci_error_handlers be_eeh_handlers = {
2515         .error_detected = be_eeh_err_detected,
2516         .slot_reset = be_eeh_reset,
2517         .resume = be_eeh_resume,
2518 };
2519
2520 static struct pci_driver be_driver = {
2521         .name = DRV_NAME,
2522         .id_table = be_dev_ids,
2523         .probe = be_probe,
2524         .remove = be_remove,
2525         .suspend = be_suspend,
2526         .resume = be_resume,
2527         .err_handler = &be_eeh_handlers
2528 };
2529
2530 static int __init be_init_module(void)
2531 {
2532         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2533             rx_frag_size != 2048) {
2534                 printk(KERN_WARNING DRV_NAME
2535                         " : Module param rx_frag_size must be 2048/4096/8192."
2536                         " Using 2048\n");
2537                 rx_frag_size = 2048;
2538         }
2539
2540         return pci_register_driver(&be_driver);
2541 }
2542 module_init(be_init_module);
2543
2544 static void __exit be_exit_module(void)
2545 {
2546         pci_unregister_driver(&be_driver);
2547 }
2548 module_exit(be_exit_module);