drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2010 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 static unsigned int num_vfs;
  30 module_param(rx_frag_size, uint, S_IRUGO);
  31 module_param(num_vfs, uint, S_IRUGO);
  32 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  33 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
  34
  35 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  36         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  37         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
  38         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  39         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  40         { 0 }
  41 };
  42 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  43
  44 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  45 {
  46         struct be_dma_mem *mem = &q->dma_mem;
  47         if (mem->va)
  48                 pci_free_consistent(adapter->pdev, mem->size,
  49                         mem->va, mem->dma);
  50 }
  51
  52 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  53                 u16 len, u16 entry_size)
  54 {
  55         struct be_dma_mem *mem = &q->dma_mem;
  56
  57         memset(q, 0, sizeof(*q));
  58         q->len = len;
  59         q->entry_size = entry_size;
  60         mem->size = len * entry_size;
  61         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  62         if (!mem->va)
  63                 return -1;
  64         memset(mem->va, 0, mem->size);
  65         return 0;
  66 }
  67
  68 static void be_intr_set(struct be_adapter *adapter, bool enable)
  69 {
  70         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  71         u32 reg = ioread32(addr);
  72         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  73
  74         if (adapter->eeh_err)
  75                 return;
  76
  77         if (!enabled && enable)
  78                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  79         else if (enabled && !enable)
  80                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  81         else
  82                 return;
  83
  84         iowrite32(reg, addr);
  85 }
  86
  87 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  88 {
  89         u32 val = 0;
  90         val |= qid & DB_RQ_RING_ID_MASK;
  91         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  92         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  93 }
  94
  95 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  96 {
  97         u32 val = 0;
  98         val |= qid & DB_TXULP_RING_ID_MASK;
  99         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 100         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
 101 }
 102
 103 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
 104                 bool arm, bool clear_int, u16 num_popped)
 105 {
 106         u32 val = 0;
 107         val |= qid & DB_EQ_RING_ID_MASK;
 108
 109         if (adapter->eeh_err)
 110                 return;
 111
 112         if (arm)
 113                 val |= 1 << DB_EQ_REARM_SHIFT;
 114         if (clear_int)
 115                 val |= 1 << DB_EQ_CLR_SHIFT;
 116         val |= 1 << DB_EQ_EVNT_SHIFT;
 117         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 118         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 119 }
 120
 121 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 122 {
 123         u32 val = 0;
 124         val |= qid & DB_CQ_RING_ID_MASK;
 125
 126         if (adapter->eeh_err)
 127                 return;
 128
 129         if (arm)
 130                 val |= 1 << DB_CQ_REARM_SHIFT;
 131         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 132         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 133 }
 134
 135 static int be_mac_addr_set(struct net_device *netdev, void *p)
 136 {
 137         struct be_adapter *adapter = netdev_priv(netdev);
 138         struct sockaddr *addr = p;
 139         int status = 0;
 140
 141         if (!is_valid_ether_addr(addr->sa_data))
 142                 return -EADDRNOTAVAIL;
 143
 144         /* MAC addr configuration will be done in hardware for VFs
 145          * by their corresponding PFs. Just copy to netdev addr here
 146          */
 147         if (!be_physfn(adapter))
 148                 goto netdev_addr;
 149
 150         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 151         if (status)
 152                 return status;
 153
 154         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 155                         adapter->if_handle, &adapter->pmac_id);
 156 netdev_addr:
 157         if (!status)
 158                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 159
 160         return status;
 161 }
 162
 163 void netdev_stats_update(struct be_adapter *adapter)
 164 {
 165         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 166         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 167         struct be_port_rxf_stats *port_stats =
 168                         &rxf_stats->port[adapter->port_num];
 169         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 170         struct be_erx_stats *erx_stats = &hw_stats->erx;
 171
 172         dev_stats->rx_packets = drvr_stats(adapter)->be_rx_pkts;
 173         dev_stats->tx_packets = drvr_stats(adapter)->be_tx_pkts;
 174         dev_stats->rx_bytes = drvr_stats(adapter)->be_rx_bytes;
 175         dev_stats->tx_bytes = drvr_stats(adapter)->be_tx_bytes;
 176
 177         /* bad pkts received */
 178         dev_stats->rx_errors = port_stats->rx_crc_errors +
 179                 port_stats->rx_alignment_symbol_errors +
 180                 port_stats->rx_in_range_errors +
 181                 port_stats->rx_out_range_errors +
 182                 port_stats->rx_frame_too_long +
 183                 port_stats->rx_dropped_too_small +
 184                 port_stats->rx_dropped_too_short +
 185                 port_stats->rx_dropped_header_too_small +
 186                 port_stats->rx_dropped_tcp_length +
 187                 port_stats->rx_dropped_runt +
 188                 port_stats->rx_tcp_checksum_errs +
 189                 port_stats->rx_ip_checksum_errs +
 190                 port_stats->rx_udp_checksum_errs;
 191
 192         /*  no space in linux buffers: best possible approximation */
 193         dev_stats->rx_dropped =
 194                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 195
 196         /* detailed rx errors */
 197         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 198                 port_stats->rx_out_range_errors +
 199                 port_stats->rx_frame_too_long;
 200
 201         /* receive ring buffer overflow */
 202         dev_stats->rx_over_errors = 0;
 203
 204         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 205
 206         /* frame alignment errors */
 207         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 208
 209         /* receiver fifo overrun */
 210         /* drops_no_pbuf is no per i/f, it's per BE card */
 211         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 212                                         port_stats->rx_input_fifo_overflow +
 213                                         rxf_stats->rx_drops_no_pbuf;
 214         /* receiver missed packetd */
 215         dev_stats->rx_missed_errors = 0;
 216
 217         /*  packet transmit problems */
 218         dev_stats->tx_errors = 0;
 219
 220         /* no space available in linux */
 221         dev_stats->tx_dropped = 0;
 222
 223         dev_stats->multicast = port_stats->rx_multicast_frames;
 224         dev_stats->collisions = 0;
 225
 226         /* detailed tx_errors */
 227         dev_stats->tx_aborted_errors = 0;
 228         dev_stats->tx_carrier_errors = 0;
 229         dev_stats->tx_fifo_errors = 0;
 230         dev_stats->tx_heartbeat_errors = 0;
 231         dev_stats->tx_window_errors = 0;
 232 }
 233
 234 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 235 {
 236         struct net_device *netdev = adapter->netdev;
 237
 238         /* If link came up or went down */
 239         if (adapter->link_up != link_up) {
 240                 adapter->link_speed = -1;
 241                 if (link_up) {
 242                         netif_start_queue(netdev);
 243                         netif_carrier_on(netdev);
 244                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 245                 } else {
 246                         netif_stop_queue(netdev);
 247                         netif_carrier_off(netdev);
 248                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 249                 }
 250                 adapter->link_up = link_up;
 251         }
 252 }
 253
 254 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 255 static void be_rx_eqd_update(struct be_adapter *adapter)
 256 {
 257         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 258         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 259         ulong now = jiffies;
 260         u32 eqd;
 261
 262         if (!rx_eq->enable_aic)
 263                 return;
 264
 265         /* Wrapped around */
 266         if (time_before(now, stats->rx_fps_jiffies)) {
 267                 stats->rx_fps_jiffies = now;
 268                 return;
 269         }
 270
 271         /* Update once a second */
 272         if ((now - stats->rx_fps_jiffies) < HZ)
 273                 return;
 274
 275         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 276                         ((now - stats->rx_fps_jiffies) / HZ);
 277
 278         stats->rx_fps_jiffies = now;
 279         stats->be_prev_rx_frags = stats->be_rx_frags;
 280         eqd = stats->be_rx_fps / 110000;
 281         eqd = eqd << 3;
 282         if (eqd > rx_eq->max_eqd)
 283                 eqd = rx_eq->max_eqd;
 284         if (eqd < rx_eq->min_eqd)
 285                 eqd = rx_eq->min_eqd;
 286         if (eqd < 10)
 287                 eqd = 0;
 288         if (eqd != rx_eq->cur_eqd)
 289                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 290
 291         rx_eq->cur_eqd = eqd;
 292 }
 293
 294 static struct net_device_stats *be_get_stats(struct net_device *dev)
 295 {
 296         return &dev->stats;
 297 }
 298
 299 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 300 {
 301         u64 rate = bytes;
 302
 303         do_div(rate, ticks / HZ);
 304         rate <<= 3;                     /* bytes/sec -> bits/sec */
 305         do_div(rate, 1000000ul);        /* MB/Sec */
 306
 307         return rate;
 308 }
 309
 310 static void be_tx_rate_update(struct be_adapter *adapter)
 311 {
 312         struct be_drvr_stats *stats = drvr_stats(adapter);
 313         ulong now = jiffies;
 314
 315         /* Wrapped around? */
 316         if (time_before(now, stats->be_tx_jiffies)) {
 317                 stats->be_tx_jiffies = now;
 318                 return;
 319         }
 320
 321         /* Update tx rate once in two seconds */
 322         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 323                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 324                                                   - stats->be_tx_bytes_prev,
 325                                                  now - stats->be_tx_jiffies);
 326                 stats->be_tx_jiffies = now;
 327                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 328         }
 329 }
 330
 331 static void be_tx_stats_update(struct be_adapter *adapter,
 332                         u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
 333 {
 334         struct be_drvr_stats *stats = drvr_stats(adapter);
 335         stats->be_tx_reqs++;
 336         stats->be_tx_wrbs += wrb_cnt;
 337         stats->be_tx_bytes += copied;
 338         stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
 339         if (stopped)
 340                 stats->be_tx_stops++;
 341 }
 342
 343 /* Determine number of WRB entries needed to xmit data in an skb */
 344 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 345 {
 346         int cnt = (skb->len > skb->data_len);
 347
 348         cnt += skb_shinfo(skb)->nr_frags;
 349
 350         /* to account for hdr wrb */
 351         cnt++;
 352         if (cnt & 1) {
 353                 /* add a dummy to make it an even num */
 354                 cnt++;
 355                 *dummy = true;
 356         } else
 357                 *dummy = false;
 358         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 359         return cnt;
 360 }
 361
 362 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 363 {
 364         wrb->frag_pa_hi = upper_32_bits(addr);
 365         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 366         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 367 }
 368
 369 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 370                 bool vlan, u32 wrb_cnt, u32 len)
 371 {
 372         memset(hdr, 0, sizeof(*hdr));
 373
 374         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 375
 376         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 377                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 378                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 379                         hdr, skb_shinfo(skb)->gso_size);
 380         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 381                 if (is_tcp_pkt(skb))
 382                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 383                 else if (is_udp_pkt(skb))
 384                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 385         }
 386
 387         if (vlan && vlan_tx_tag_present(skb)) {
 388                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 389                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 390                         hdr, vlan_tx_tag_get(skb));
 391         }
 392
 393         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 394         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 395         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 396         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 397 }
 398
 399 static void unmap_tx_frag(struct pci_dev *pdev, struct be_eth_wrb *wrb,
 400                 bool unmap_single)
 401 {
 402         dma_addr_t dma;
 403
 404         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 405
 406         dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
 407         if (wrb->frag_len) {
 408                 if (unmap_single)
 409                         pci_unmap_single(pdev, dma, wrb->frag_len,
 410                                 PCI_DMA_TODEVICE);
 411                 else
 412                         pci_unmap_page(pdev, dma, wrb->frag_len,
 413                                 PCI_DMA_TODEVICE);
 414         }
 415 }
 416
 417 static int make_tx_wrbs(struct be_adapter *adapter,
 418                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 419 {
 420         dma_addr_t busaddr;
 421         int i, copied = 0;
 422         struct pci_dev *pdev = adapter->pdev;
 423         struct sk_buff *first_skb = skb;
 424         struct be_queue_info *txq = &adapter->tx_obj.q;
 425         struct be_eth_wrb *wrb;
 426         struct be_eth_hdr_wrb *hdr;
 427         bool map_single = false;
 428         u16 map_head;
 429
 430         hdr = queue_head_node(txq);
 431         queue_head_inc(txq);
 432         map_head = txq->head;
 433
 434         if (skb->len > skb->data_len) {
 435                 int len = skb_headlen(skb);
 436                 busaddr = pci_map_single(pdev, skb->data, len,
 437                                          PCI_DMA_TODEVICE);
 438                 if (pci_dma_mapping_error(pdev, busaddr))
 439                         goto dma_err;
 440                 map_single = true;
 441                 wrb = queue_head_node(txq);
 442                 wrb_fill(wrb, busaddr, len);
 443                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 444                 queue_head_inc(txq);
 445                 copied += len;
 446         }
 447
 448         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 449                 struct skb_frag_struct *frag =
 450                         &skb_shinfo(skb)->frags[i];
 451                 busaddr = pci_map_page(pdev, frag->page,
 452                                        frag->page_offset,
 453                                        frag->size, PCI_DMA_TODEVICE);
 454                 if (pci_dma_mapping_error(pdev, busaddr))
 455                         goto dma_err;
 456                 wrb = queue_head_node(txq);
 457                 wrb_fill(wrb, busaddr, frag->size);
 458                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 459                 queue_head_inc(txq);
 460                 copied += frag->size;
 461         }
 462
 463         if (dummy_wrb) {
 464                 wrb = queue_head_node(txq);
 465                 wrb_fill(wrb, 0, 0);
 466                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 467                 queue_head_inc(txq);
 468         }
 469
 470         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 471                 wrb_cnt, copied);
 472         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 473
 474         return copied;
 475 dma_err:
 476         txq->head = map_head;
 477         while (copied) {
 478                 wrb = queue_head_node(txq);
 479                 unmap_tx_frag(pdev, wrb, map_single);
 480                 map_single = false;
 481                 copied -= wrb->frag_len;
 482                 queue_head_inc(txq);
 483         }
 484         return 0;
 485 }
 486
 487 static netdev_tx_t be_xmit(struct sk_buff *skb,
 488                         struct net_device *netdev)
 489 {
 490         struct be_adapter *adapter = netdev_priv(netdev);
 491         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 492         struct be_queue_info *txq = &tx_obj->q;
 493         u32 wrb_cnt = 0, copied = 0;
 494         u32 start = txq->head;
 495         bool dummy_wrb, stopped = false;
 496
 497         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 498
 499         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 500         if (copied) {
 501                 /* record the sent skb in the sent_skb table */
 502                 BUG_ON(tx_obj->sent_skb_list[start]);
 503                 tx_obj->sent_skb_list[start] = skb;
 504
 505                 /* Ensure txq has space for the next skb; Else stop the queue
 506                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 507                  * tx compls of the current transmit which'll wake up the queue
 508                  */
 509                 atomic_add(wrb_cnt, &txq->used);
 510                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 511                                                                 txq->len) {
 512                         netif_stop_queue(netdev);
 513                         stopped = true;
 514                 }
 515
 516                 be_txq_notify(adapter, txq->id, wrb_cnt);
 517
 518                 be_tx_stats_update(adapter, wrb_cnt, copied,
 519                                 skb_shinfo(skb)->gso_segs, stopped);
 520         } else {
 521                 txq->head = start;
 522                 dev_kfree_skb_any(skb);
 523         }
 524         return NETDEV_TX_OK;
 525 }
 526
 527 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 528 {
 529         struct be_adapter *adapter = netdev_priv(netdev);
 530         if (new_mtu < BE_MIN_MTU ||
 531                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 532                                         (ETH_HLEN + ETH_FCS_LEN))) {
 533                 dev_info(&adapter->pdev->dev,
 534                         "MTU must be between %d and %d bytes\n",
 535                         BE_MIN_MTU,
 536                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 537                 return -EINVAL;
 538         }
 539         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 540                         netdev->mtu, new_mtu);
 541         netdev->mtu = new_mtu;
 542         return 0;
 543 }
 544
 545 /*
 546  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 547  * If the user configures more, place BE in vlan promiscuous mode.
 548  */
 549 static int be_vid_config(struct be_adapter *adapter)
 550 {
 551         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 552         u16 ntags = 0, i;
 553         int status = 0;
 554
 555         if (adapter->vlans_added <= adapter->max_vlans)  {
 556                 /* Construct VLAN Table to give to HW */
 557                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 558                         if (adapter->vlan_tag[i]) {
 559                                 vtag[ntags] = cpu_to_le16(i);
 560                                 ntags++;
 561                         }
 562                 }
 563                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 564                                         vtag, ntags, 1, 0);
 565         } else {
 566                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 567                                         NULL, 0, 1, 1);
 568         }
 569         return status;
 570 }
 571
 572 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 573 {
 574         struct be_adapter *adapter = netdev_priv(netdev);
 575         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 576         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 577
 578         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 579         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 580         adapter->vlan_grp = grp;
 581         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 582         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 583 }
 584
 585 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 586 {
 587         struct be_adapter *adapter = netdev_priv(netdev);
 588
 589         if (!be_physfn(adapter))
 590                 return;
 591
 592         adapter->vlan_tag[vid] = 1;
 593         adapter->vlans_added++;
 594         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 595                 be_vid_config(adapter);
 596 }
 597
 598 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 599 {
 600         struct be_adapter *adapter = netdev_priv(netdev);
 601
 602         if (!be_physfn(adapter))
 603                 return;
 604
 605         adapter->vlan_tag[vid] = 0;
 606         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 607         adapter->vlans_added--;
 608         if (adapter->vlans_added <= adapter->max_vlans)
 609                 be_vid_config(adapter);
 610 }
 611
 612 static void be_set_multicast_list(struct net_device *netdev)
 613 {
 614         struct be_adapter *adapter = netdev_priv(netdev);
 615
 616         if (netdev->flags & IFF_PROMISC) {
 617                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 618                 adapter->promiscuous = true;
 619                 goto done;
 620         }
 621
 622         /* BE was previously in promiscous mode; disable it */
 623         if (adapter->promiscuous) {
 624                 adapter->promiscuous = false;
 625                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 626         }
 627
 628         /* Enable multicast promisc if num configured exceeds what we support */
 629         if (netdev->flags & IFF_ALLMULTI ||
 630             netdev_mc_count(netdev) > BE_MAX_MC) {
 631                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
 632                                 &adapter->mc_cmd_mem);
 633                 goto done;
 634         }
 635
 636         be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
 637                 &adapter->mc_cmd_mem);
 638 done:
 639         return;
 640 }
 641
 642 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
 643 {
 644         struct be_adapter *adapter = netdev_priv(netdev);
 645         int status;
 646
 647         if (!adapter->sriov_enabled)
 648                 return -EPERM;
 649
 650         if (!is_valid_ether_addr(mac) || (vf >= num_vfs))
 651                 return -EINVAL;
 652
 653         status = be_cmd_pmac_del(adapter, adapter->vf_if_handle[vf],
 654                                 adapter->vf_pmac_id[vf]);
 655
 656         status = be_cmd_pmac_add(adapter, mac, adapter->vf_if_handle[vf],
 657                                 &adapter->vf_pmac_id[vf]);
 658         if (!status)
 659                 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed\n",
 660                                 mac, vf);
 661         return status;
 662 }
 663
 664 static void be_rx_rate_update(struct be_adapter *adapter)
 665 {
 666         struct be_drvr_stats *stats = drvr_stats(adapter);
 667         ulong now = jiffies;
 668
 669         /* Wrapped around */
 670         if (time_before(now, stats->be_rx_jiffies)) {
 671                 stats->be_rx_jiffies = now;
 672                 return;
 673         }
 674
 675         /* Update the rate once in two seconds */
 676         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 677                 return;
 678
 679         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 680                                           - stats->be_rx_bytes_prev,
 681                                          now - stats->be_rx_jiffies);
 682         stats->be_rx_jiffies = now;
 683         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 684 }
 685
 686 static void be_rx_stats_update(struct be_adapter *adapter,
 687                 u32 pktsize, u16 numfrags)
 688 {
 689         struct be_drvr_stats *stats = drvr_stats(adapter);
 690
 691         stats->be_rx_compl++;
 692         stats->be_rx_frags += numfrags;
 693         stats->be_rx_bytes += pktsize;
 694         stats->be_rx_pkts++;
 695 }
 696
 697 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 698 {
 699         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 700
 701         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 702         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 703         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 704         if (ip_version) {
 705                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 706                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 707         }
 708         ipv6_chk = (ip_version && (tcpf || udpf));
 709
 710         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 711 }
 712
 713 static struct be_rx_page_info *
 714 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 715 {
 716         struct be_rx_page_info *rx_page_info;
 717         struct be_queue_info *rxq = &adapter->rx_obj.q;
 718
 719         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 720         BUG_ON(!rx_page_info->page);
 721
 722         if (rx_page_info->last_page_user) {
 723                 pci_unmap_page(adapter->pdev, dma_unmap_addr(rx_page_info, bus),
 724                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 725                 rx_page_info->last_page_user = false;
 726         }
 727
 728         atomic_dec(&rxq->used);
 729         return rx_page_info;
 730 }
 731
 732 /* Throwaway the data in the Rx completion */
 733 static void be_rx_compl_discard(struct be_adapter *adapter,
 734                         struct be_eth_rx_compl *rxcp)
 735 {
 736         struct be_queue_info *rxq = &adapter->rx_obj.q;
 737         struct be_rx_page_info *page_info;
 738         u16 rxq_idx, i, num_rcvd;
 739
 740         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 741         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 742
 743         for (i = 0; i < num_rcvd; i++) {
 744                 page_info = get_rx_page_info(adapter, rxq_idx);
 745                 put_page(page_info->page);
 746                 memset(page_info, 0, sizeof(*page_info));
 747                 index_inc(&rxq_idx, rxq->len);
 748         }
 749 }
 750
 751 /*
 752  * skb_fill_rx_data forms a complete skb for an ether frame
 753  * indicated by rxcp.
 754  */
 755 static void skb_fill_rx_data(struct be_adapter *adapter,
 756                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
 757                         u16 num_rcvd)
 758 {
 759         struct be_queue_info *rxq = &adapter->rx_obj.q;
 760         struct be_rx_page_info *page_info;
 761         u16 rxq_idx, i, j;
 762         u32 pktsize, hdr_len, curr_frag_len, size;
 763         u8 *start;
 764
 765         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 766         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 767
 768         page_info = get_rx_page_info(adapter, rxq_idx);
 769
 770         start = page_address(page_info->page) + page_info->page_offset;
 771         prefetch(start);
 772
 773         /* Copy data in the first descriptor of this completion */
 774         curr_frag_len = min(pktsize, rx_frag_size);
 775
 776         /* Copy the header portion into skb_data */
 777         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 778         memcpy(skb->data, start, hdr_len);
 779         skb->len = curr_frag_len;
 780         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 781                 /* Complete packet has now been moved to data */
 782                 put_page(page_info->page);
 783                 skb->data_len = 0;
 784                 skb->tail += curr_frag_len;
 785         } else {
 786                 skb_shinfo(skb)->nr_frags = 1;
 787                 skb_shinfo(skb)->frags[0].page = page_info->page;
 788                 skb_shinfo(skb)->frags[0].page_offset =
 789                                         page_info->page_offset + hdr_len;
 790                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 791                 skb->data_len = curr_frag_len - hdr_len;
 792                 skb->tail += hdr_len;
 793         }
 794         page_info->page = NULL;
 795
 796         if (pktsize <= rx_frag_size) {
 797                 BUG_ON(num_rcvd != 1);
 798                 goto done;
 799         }
 800
 801         /* More frags present for this completion */
 802         size = pktsize;
 803         for (i = 1, j = 0; i < num_rcvd; i++) {
 804                 size -= curr_frag_len;
 805                 index_inc(&rxq_idx, rxq->len);
 806                 page_info = get_rx_page_info(adapter, rxq_idx);
 807
 808                 curr_frag_len = min(size, rx_frag_size);
 809
 810                 /* Coalesce all frags from the same physical page in one slot */
 811                 if (page_info->page_offset == 0) {
 812                         /* Fresh page */
 813                         j++;
 814                         skb_shinfo(skb)->frags[j].page = page_info->page;
 815                         skb_shinfo(skb)->frags[j].page_offset =
 816                                                         page_info->page_offset;
 817                         skb_shinfo(skb)->frags[j].size = 0;
 818                         skb_shinfo(skb)->nr_frags++;
 819                 } else {
 820                         put_page(page_info->page);
 821                 }
 822
 823                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 824                 skb->len += curr_frag_len;
 825                 skb->data_len += curr_frag_len;
 826
 827                 page_info->page = NULL;
 828         }
 829         BUG_ON(j > MAX_SKB_FRAGS);
 830
 831 done:
 832         be_rx_stats_update(adapter, pktsize, num_rcvd);
 833 }
 834
 835 /* Process the RX completion indicated by rxcp when GRO is disabled */
 836 static void be_rx_compl_process(struct be_adapter *adapter,
 837                         struct be_eth_rx_compl *rxcp)
 838 {
 839         struct sk_buff *skb;
 840         u32 vlanf, vid;
 841         u16 num_rcvd;
 842         u8 vtm;
 843
 844         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 845         /* Is it a flush compl that has no data */
 846         if (unlikely(num_rcvd == 0))
 847                 return;
 848
 849         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 850         if (unlikely(!skb)) {
 851                 if (net_ratelimit())
 852                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 853                 be_rx_compl_discard(adapter, rxcp);
 854                 return;
 855         }
 856
 857         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 858
 859         if (do_pkt_csum(rxcp, adapter->rx_csum))
 860                 skb->ip_summed = CHECKSUM_NONE;
 861         else
 862                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 863
 864         skb->truesize = skb->len + sizeof(struct sk_buff);
 865         skb->protocol = eth_type_trans(skb, adapter->netdev);
 866
 867         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 868         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 869
 870         /* vlanf could be wrongly set in some cards.
 871          * ignore if vtm is not set */
 872         if ((adapter->cap & 0x400) && !vtm)
 873                 vlanf = 0;
 874
 875         if (unlikely(vlanf)) {
 876                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 877                         kfree_skb(skb);
 878                         return;
 879                 }
 880                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 881                 vid = swab16(vid);
 882                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 883         } else {
 884                 netif_receive_skb(skb);
 885         }
 886 }
 887
 888 /* Process the RX completion indicated by rxcp when GRO is enabled */
 889 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 890                         struct be_eth_rx_compl *rxcp)
 891 {
 892         struct be_rx_page_info *page_info;
 893         struct sk_buff *skb = NULL;
 894         struct be_queue_info *rxq = &adapter->rx_obj.q;
 895         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 896         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 897         u16 i, rxq_idx = 0, vid, j;
 898         u8 vtm;
 899
 900         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 901         /* Is it a flush compl that has no data */
 902         if (unlikely(num_rcvd == 0))
 903                 return;
 904
 905         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 906         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 907         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 908         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 909
 910         /* vlanf could be wrongly set in some cards.
 911          * ignore if vtm is not set */
 912         if ((adapter->cap & 0x400) && !vtm)
 913                 vlanf = 0;
 914
 915         skb = napi_get_frags(&eq_obj->napi);
 916         if (!skb) {
 917                 be_rx_compl_discard(adapter, rxcp);
 918                 return;
 919         }
 920
 921         remaining = pkt_size;
 922         for (i = 0, j = -1; i < num_rcvd; i++) {
 923                 page_info = get_rx_page_info(adapter, rxq_idx);
 924
 925                 curr_frag_len = min(remaining, rx_frag_size);
 926
 927                 /* Coalesce all frags from the same physical page in one slot */
 928                 if (i == 0 || page_info->page_offset == 0) {
 929                         /* First frag or Fresh page */
 930                         j++;
 931                         skb_shinfo(skb)->frags[j].page = page_info->page;
 932                         skb_shinfo(skb)->frags[j].page_offset =
 933                                                         page_info->page_offset;
 934                         skb_shinfo(skb)->frags[j].size = 0;
 935                 } else {
 936                         put_page(page_info->page);
 937                 }
 938                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 939
 940                 remaining -= curr_frag_len;
 941                 index_inc(&rxq_idx, rxq->len);
 942                 memset(page_info, 0, sizeof(*page_info));
 943         }
 944         BUG_ON(j > MAX_SKB_FRAGS);
 945
 946         skb_shinfo(skb)->nr_frags = j + 1;
 947         skb->len = pkt_size;
 948         skb->data_len = pkt_size;
 949         skb->truesize += pkt_size;
 950         skb->ip_summed = CHECKSUM_UNNECESSARY;
 951
 952         if (likely(!vlanf)) {
 953                 napi_gro_frags(&eq_obj->napi);
 954         } else {
 955                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 956                 vid = swab16(vid);
 957
 958                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 959                         return;
 960
 961                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 962         }
 963
 964         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 965 }
 966
 967 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 968 {
 969         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 970
 971         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 972                 return NULL;
 973
 974         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 975
 976         queue_tail_inc(&adapter->rx_obj.cq);
 977         return rxcp;
 978 }
 979
 980 /* To reset the valid bit, we need to reset the whole word as
 981  * when walking the queue the valid entries are little-endian
 982  * and invalid entries are host endian
 983  */
 984 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 985 {
 986         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 987 }
 988
 989 static inline struct page *be_alloc_pages(u32 size)
 990 {
 991         gfp_t alloc_flags = GFP_ATOMIC;
 992         u32 order = get_order(size);
 993         if (order > 0)
 994                 alloc_flags |= __GFP_COMP;
 995         return  alloc_pages(alloc_flags, order);
 996 }
 997
 998 /*
 999  * Allocate a page, split it to fragments of size rx_frag_size and post as
1000  * receive buffers to BE
1001  */
1002 static void be_post_rx_frags(struct be_adapter *adapter)
1003 {
1004         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
1005         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
1006         struct be_queue_info *rxq = &adapter->rx_obj.q;
1007         struct page *pagep = NULL;
1008         struct be_eth_rx_d *rxd;
1009         u64 page_dmaaddr = 0, frag_dmaaddr;
1010         u32 posted, page_offset = 0;
1011
1012         page_info = &page_info_tbl[rxq->head];
1013         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
1014                 if (!pagep) {
1015                         pagep = be_alloc_pages(adapter->big_page_size);
1016                         if (unlikely(!pagep)) {
1017                                 drvr_stats(adapter)->be_ethrx_post_fail++;
1018                                 break;
1019                         }
1020                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
1021                                                 adapter->big_page_size,
1022                                                 PCI_DMA_FROMDEVICE);
1023                         page_info->page_offset = 0;
1024                 } else {
1025                         get_page(pagep);
1026                         page_info->page_offset = page_offset + rx_frag_size;
1027                 }
1028                 page_offset = page_info->page_offset;
1029                 page_info->page = pagep;
1030                 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
1031                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
1032
1033                 rxd = queue_head_node(rxq);
1034                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1035                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1036
1037                 /* Any space left in the current big page for another frag? */
1038                 if ((page_offset + rx_frag_size + rx_frag_size) >
1039                                         adapter->big_page_size) {
1040                         pagep = NULL;
1041                         page_info->last_page_user = true;
1042                 }
1043
1044                 prev_page_info = page_info;
1045                 queue_head_inc(rxq);
1046                 page_info = &page_info_tbl[rxq->head];
1047         }
1048         if (pagep)
1049                 prev_page_info->last_page_user = true;
1050
1051         if (posted) {
1052                 atomic_add(posted, &rxq->used);
1053                 be_rxq_notify(adapter, rxq->id, posted);
1054         } else if (atomic_read(&rxq->used) == 0) {
1055                 /* Let be_worker replenish when memory is available */
1056                 adapter->rx_post_starved = true;
1057         }
1058 }
1059
1060 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1061 {
1062         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1063
1064         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1065                 return NULL;
1066
1067         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1068
1069         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1070
1071         queue_tail_inc(tx_cq);
1072         return txcp;
1073 }
1074
1075 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1076 {
1077         struct be_queue_info *txq = &adapter->tx_obj.q;
1078         struct be_eth_wrb *wrb;
1079         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1080         struct sk_buff *sent_skb;
1081         u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1082         bool unmap_skb_hdr = true;
1083
1084         sent_skb = sent_skbs[txq->tail];
1085         BUG_ON(!sent_skb);
1086         sent_skbs[txq->tail] = NULL;
1087
1088         /* skip header wrb */
1089         queue_tail_inc(txq);
1090
1091         do {
1092                 cur_index = txq->tail;
1093                 wrb = queue_tail_node(txq);
1094                 unmap_tx_frag(adapter->pdev, wrb, (unmap_skb_hdr &&
1095                                         skb_headlen(sent_skb)));
1096                 unmap_skb_hdr = false;
1097
1098                 num_wrbs++;
1099                 queue_tail_inc(txq);
1100         } while (cur_index != last_index);
1101
1102         atomic_sub(num_wrbs, &txq->used);
1103
1104         kfree_skb(sent_skb);
1105 }
1106
1107 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1108 {
1109         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1110
1111         if (!eqe->evt)
1112                 return NULL;
1113
1114         eqe->evt = le32_to_cpu(eqe->evt);
1115         queue_tail_inc(&eq_obj->q);
1116         return eqe;
1117 }
1118
1119 static int event_handle(struct be_adapter *adapter,
1120                         struct be_eq_obj *eq_obj)
1121 {
1122         struct be_eq_entry *eqe;
1123         u16 num = 0;
1124
1125         while ((eqe = event_get(eq_obj)) != NULL) {
1126                 eqe->evt = 0;
1127                 num++;
1128         }
1129
1130         /* Deal with any spurious interrupts that come
1131          * without events
1132          */
1133         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1134         if (num)
1135                 napi_schedule(&eq_obj->napi);
1136
1137         return num;
1138 }
1139
1140 /* Just read and notify events without processing them.
1141  * Used at the time of destroying event queues */
1142 static void be_eq_clean(struct be_adapter *adapter,
1143                         struct be_eq_obj *eq_obj)
1144 {
1145         struct be_eq_entry *eqe;
1146         u16 num = 0;
1147
1148         while ((eqe = event_get(eq_obj)) != NULL) {
1149                 eqe->evt = 0;
1150                 num++;
1151         }
1152
1153         if (num)
1154                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1155 }
1156
1157 static void be_rx_q_clean(struct be_adapter *adapter)
1158 {
1159         struct be_rx_page_info *page_info;
1160         struct be_queue_info *rxq = &adapter->rx_obj.q;
1161         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1162         struct be_eth_rx_compl *rxcp;
1163         u16 tail;
1164
1165         /* First cleanup pending rx completions */
1166         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1167                 be_rx_compl_discard(adapter, rxcp);
1168                 be_rx_compl_reset(rxcp);
1169                 be_cq_notify(adapter, rx_cq->id, true, 1);
1170         }
1171
1172         /* Then free posted rx buffer that were not used */
1173         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1174         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1175                 page_info = get_rx_page_info(adapter, tail);
1176                 put_page(page_info->page);
1177                 memset(page_info, 0, sizeof(*page_info));
1178         }
1179         BUG_ON(atomic_read(&rxq->used));
1180 }
1181
1182 static void be_tx_compl_clean(struct be_adapter *adapter)
1183 {
1184         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1185         struct be_queue_info *txq = &adapter->tx_obj.q;
1186         struct be_eth_tx_compl *txcp;
1187         u16 end_idx, cmpl = 0, timeo = 0;
1188         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1189         struct sk_buff *sent_skb;
1190         bool dummy_wrb;
1191
1192         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1193         do {
1194                 while ((txcp = be_tx_compl_get(tx_cq))) {
1195                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1196                                         wrb_index, txcp);
1197                         be_tx_compl_process(adapter, end_idx);
1198                         cmpl++;
1199                 }
1200                 if (cmpl) {
1201                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1202                         cmpl = 0;
1203                 }
1204
1205                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1206                         break;
1207
1208                 mdelay(1);
1209         } while (true);
1210
1211         if (atomic_read(&txq->used))
1212                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1213                         atomic_read(&txq->used));
1214
1215         /* free posted tx for which compls will never arrive */
1216         while (atomic_read(&txq->used)) {
1217                 sent_skb = sent_skbs[txq->tail];
1218                 end_idx = txq->tail;
1219                 index_adv(&end_idx,
1220                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1221                 be_tx_compl_process(adapter, end_idx);
1222         }
1223 }
1224
1225 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1226 {
1227         struct be_queue_info *q;
1228
1229         q = &adapter->mcc_obj.q;
1230         if (q->created)
1231                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1232         be_queue_free(adapter, q);
1233
1234         q = &adapter->mcc_obj.cq;
1235         if (q->created)
1236                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1237         be_queue_free(adapter, q);
1238 }
1239
1240 /* Must be called only after TX qs are created as MCC shares TX EQ */
1241 static int be_mcc_queues_create(struct be_adapter *adapter)
1242 {
1243         struct be_queue_info *q, *cq;
1244
1245         /* Alloc MCC compl queue */
1246         cq = &adapter->mcc_obj.cq;
1247         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1248                         sizeof(struct be_mcc_compl)))
1249                 goto err;
1250
1251         /* Ask BE to create MCC compl queue; share TX's eq */
1252         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1253                 goto mcc_cq_free;
1254
1255         /* Alloc MCC queue */
1256         q = &adapter->mcc_obj.q;
1257         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1258                 goto mcc_cq_destroy;
1259
1260         /* Ask BE to create MCC queue */
1261         if (be_cmd_mccq_create(adapter, q, cq))
1262                 goto mcc_q_free;
1263
1264         return 0;
1265
1266 mcc_q_free:
1267         be_queue_free(adapter, q);
1268 mcc_cq_destroy:
1269         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1270 mcc_cq_free:
1271         be_queue_free(adapter, cq);
1272 err:
1273         return -1;
1274 }
1275
1276 static void be_tx_queues_destroy(struct be_adapter *adapter)
1277 {
1278         struct be_queue_info *q;
1279
1280         q = &adapter->tx_obj.q;
1281         if (q->created)
1282                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1283         be_queue_free(adapter, q);
1284
1285         q = &adapter->tx_obj.cq;
1286         if (q->created)
1287                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1288         be_queue_free(adapter, q);
1289
1290         /* Clear any residual events */
1291         be_eq_clean(adapter, &adapter->tx_eq);
1292
1293         q = &adapter->tx_eq.q;
1294         if (q->created)
1295                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1296         be_queue_free(adapter, q);
1297 }
1298
1299 static int be_tx_queues_create(struct be_adapter *adapter)
1300 {
1301         struct be_queue_info *eq, *q, *cq;
1302
1303         adapter->tx_eq.max_eqd = 0;
1304         adapter->tx_eq.min_eqd = 0;
1305         adapter->tx_eq.cur_eqd = 96;
1306         adapter->tx_eq.enable_aic = false;
1307         /* Alloc Tx Event queue */
1308         eq = &adapter->tx_eq.q;
1309         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1310                 return -1;
1311
1312         /* Ask BE to create Tx Event queue */
1313         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1314                 goto tx_eq_free;
1315         adapter->base_eq_id = adapter->tx_eq.q.id;
1316
1317         /* Alloc TX eth compl queue */
1318         cq = &adapter->tx_obj.cq;
1319         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1320                         sizeof(struct be_eth_tx_compl)))
1321                 goto tx_eq_destroy;
1322
1323         /* Ask BE to create Tx eth compl queue */
1324         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1325                 goto tx_cq_free;
1326
1327         /* Alloc TX eth queue */
1328         q = &adapter->tx_obj.q;
1329         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1330                 goto tx_cq_destroy;
1331
1332         /* Ask BE to create Tx eth queue */
1333         if (be_cmd_txq_create(adapter, q, cq))
1334                 goto tx_q_free;
1335         return 0;
1336
1337 tx_q_free:
1338         be_queue_free(adapter, q);
1339 tx_cq_destroy:
1340         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1341 tx_cq_free:
1342         be_queue_free(adapter, cq);
1343 tx_eq_destroy:
1344         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1345 tx_eq_free:
1346         be_queue_free(adapter, eq);
1347         return -1;
1348 }
1349
1350 static void be_rx_queues_destroy(struct be_adapter *adapter)
1351 {
1352         struct be_queue_info *q;
1353
1354         q = &adapter->rx_obj.q;
1355         if (q->created) {
1356                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1357
1358                 /* After the rxq is invalidated, wait for a grace time
1359                  * of 1ms for all dma to end and the flush compl to arrive
1360                  */
1361                 mdelay(1);
1362                 be_rx_q_clean(adapter);
1363         }
1364         be_queue_free(adapter, q);
1365
1366         q = &adapter->rx_obj.cq;
1367         if (q->created)
1368                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1369         be_queue_free(adapter, q);
1370
1371         /* Clear any residual events */
1372         be_eq_clean(adapter, &adapter->rx_eq);
1373
1374         q = &adapter->rx_eq.q;
1375         if (q->created)
1376                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1377         be_queue_free(adapter, q);
1378 }
1379
1380 static int be_rx_queues_create(struct be_adapter *adapter)
1381 {
1382         struct be_queue_info *eq, *q, *cq;
1383         int rc;
1384
1385         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1386         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1387         adapter->rx_eq.min_eqd = 0;
1388         adapter->rx_eq.cur_eqd = 0;
1389         adapter->rx_eq.enable_aic = true;
1390
1391         /* Alloc Rx Event queue */
1392         eq = &adapter->rx_eq.q;
1393         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1394                                 sizeof(struct be_eq_entry));
1395         if (rc)
1396                 return rc;
1397
1398         /* Ask BE to create Rx Event queue */
1399         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1400         if (rc)
1401                 goto rx_eq_free;
1402
1403         /* Alloc RX eth compl queue */
1404         cq = &adapter->rx_obj.cq;
1405         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1406                         sizeof(struct be_eth_rx_compl));
1407         if (rc)
1408                 goto rx_eq_destroy;
1409
1410         /* Ask BE to create Rx eth compl queue */
1411         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1412         if (rc)
1413                 goto rx_cq_free;
1414
1415         /* Alloc RX eth queue */
1416         q = &adapter->rx_obj.q;
1417         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1418         if (rc)
1419                 goto rx_cq_destroy;
1420
1421         /* Ask BE to create Rx eth queue */
1422         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1423                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1424         if (rc)
1425                 goto rx_q_free;
1426
1427         return 0;
1428 rx_q_free:
1429         be_queue_free(adapter, q);
1430 rx_cq_destroy:
1431         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1432 rx_cq_free:
1433         be_queue_free(adapter, cq);
1434 rx_eq_destroy:
1435         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1436 rx_eq_free:
1437         be_queue_free(adapter, eq);
1438         return rc;
1439 }
1440
1441 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1442 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1443 {
1444         return eq_id - adapter->base_eq_id;
1445 }
1446
1447 static irqreturn_t be_intx(int irq, void *dev)
1448 {
1449         struct be_adapter *adapter = dev;
1450         int isr;
1451
1452         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1453                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1454         if (!isr)
1455                 return IRQ_NONE;
1456
1457         event_handle(adapter, &adapter->tx_eq);
1458         event_handle(adapter, &adapter->rx_eq);
1459
1460         return IRQ_HANDLED;
1461 }
1462
1463 static irqreturn_t be_msix_rx(int irq, void *dev)
1464 {
1465         struct be_adapter *adapter = dev;
1466
1467         event_handle(adapter, &adapter->rx_eq);
1468
1469         return IRQ_HANDLED;
1470 }
1471
1472 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1473 {
1474         struct be_adapter *adapter = dev;
1475
1476         event_handle(adapter, &adapter->tx_eq);
1477
1478         return IRQ_HANDLED;
1479 }
1480
1481 static inline bool do_gro(struct be_adapter *adapter,
1482                         struct be_eth_rx_compl *rxcp)
1483 {
1484         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1485         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1486
1487         if (err)
1488                 drvr_stats(adapter)->be_rxcp_err++;
1489
1490         return (tcp_frame && !err) ? true : false;
1491 }
1492
1493 int be_poll_rx(struct napi_struct *napi, int budget)
1494 {
1495         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1496         struct be_adapter *adapter =
1497                 container_of(rx_eq, struct be_adapter, rx_eq);
1498         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1499         struct be_eth_rx_compl *rxcp;
1500         u32 work_done;
1501
1502         adapter->stats.drvr_stats.be_rx_polls++;
1503         for (work_done = 0; work_done < budget; work_done++) {
1504                 rxcp = be_rx_compl_get(adapter);
1505                 if (!rxcp)
1506                         break;
1507
1508                 if (do_gro(adapter, rxcp))
1509                         be_rx_compl_process_gro(adapter, rxcp);
1510                 else
1511                         be_rx_compl_process(adapter, rxcp);
1512
1513                 be_rx_compl_reset(rxcp);
1514         }
1515
1516         /* Refill the queue */
1517         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1518                 be_post_rx_frags(adapter);
1519
1520         /* All consumed */
1521         if (work_done < budget) {
1522                 napi_complete(napi);
1523                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1524         } else {
1525                 /* More to be consumed; continue with interrupts disabled */
1526                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1527         }
1528         return work_done;
1529 }
1530
1531 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1532  * For TX/MCC we don't honour budget; consume everything
1533  */
1534 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1535 {
1536         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1537         struct be_adapter *adapter =
1538                 container_of(tx_eq, struct be_adapter, tx_eq);
1539         struct be_queue_info *txq = &adapter->tx_obj.q;
1540         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1541         struct be_eth_tx_compl *txcp;
1542         int tx_compl = 0, mcc_compl, status = 0;
1543         u16 end_idx;
1544
1545         while ((txcp = be_tx_compl_get(tx_cq))) {
1546                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1547                                 wrb_index, txcp);
1548                 be_tx_compl_process(adapter, end_idx);
1549                 tx_compl++;
1550         }
1551
1552         mcc_compl = be_process_mcc(adapter, &status);
1553
1554         napi_complete(napi);
1555
1556         if (mcc_compl) {
1557                 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1558                 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1559         }
1560
1561         if (tx_compl) {
1562                 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1563
1564                 /* As Tx wrbs have been freed up, wake up netdev queue if
1565                  * it was stopped due to lack of tx wrbs.
1566                  */
1567                 if (netif_queue_stopped(adapter->netdev) &&
1568                         atomic_read(&txq->used) < txq->len / 2) {
1569                         netif_wake_queue(adapter->netdev);
1570                 }
1571
1572                 drvr_stats(adapter)->be_tx_events++;
1573                 drvr_stats(adapter)->be_tx_compl += tx_compl;
1574         }
1575
1576         return 1;
1577 }
1578
1579 static void be_worker(struct work_struct *work)
1580 {
1581         struct be_adapter *adapter =
1582                 container_of(work, struct be_adapter, work.work);
1583
1584         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1585
1586         /* Set EQ delay */
1587         be_rx_eqd_update(adapter);
1588
1589         be_tx_rate_update(adapter);
1590         be_rx_rate_update(adapter);
1591
1592         if (adapter->rx_post_starved) {
1593                 adapter->rx_post_starved = false;
1594                 be_post_rx_frags(adapter);
1595         }
1596
1597         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1598 }
1599
1600 static void be_msix_disable(struct be_adapter *adapter)
1601 {
1602         if (adapter->msix_enabled) {
1603                 pci_disable_msix(adapter->pdev);
1604                 adapter->msix_enabled = false;
1605         }
1606 }
1607
1608 static void be_msix_enable(struct be_adapter *adapter)
1609 {
1610         int i, status;
1611
1612         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1613                 adapter->msix_entries[i].entry = i;
1614
1615         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1616                 BE_NUM_MSIX_VECTORS);
1617         if (status == 0)
1618                 adapter->msix_enabled = true;
1619 }
1620
1621 static void be_sriov_enable(struct be_adapter *adapter)
1622 {
1623 #ifdef CONFIG_PCI_IOV
1624         int status;
1625         if (be_physfn(adapter) && num_vfs) {
1626                 status = pci_enable_sriov(adapter->pdev, num_vfs);
1627                 adapter->sriov_enabled = status ? false : true;
1628         }
1629 #endif
1630 }
1631
1632 static void be_sriov_disable(struct be_adapter *adapter)
1633 {
1634 #ifdef CONFIG_PCI_IOV
1635         if (adapter->sriov_enabled) {
1636                 pci_disable_sriov(adapter->pdev);
1637                 adapter->sriov_enabled = false;
1638         }
1639 #endif
1640 }
1641
1642 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1643 {
1644         return adapter->msix_entries[
1645                         be_evt_bit_get(adapter, eq_id)].vector;
1646 }
1647
1648 static int be_request_irq(struct be_adapter *adapter,
1649                 struct be_eq_obj *eq_obj,
1650                 void *handler, char *desc)
1651 {
1652         struct net_device *netdev = adapter->netdev;
1653         int vec;
1654
1655         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1656         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1657         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1658 }
1659
1660 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1661 {
1662         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1663         free_irq(vec, adapter);
1664 }
1665
1666 static int be_msix_register(struct be_adapter *adapter)
1667 {
1668         int status;
1669
1670         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1671         if (status)
1672                 goto err;
1673
1674         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1675         if (status)
1676                 goto free_tx_irq;
1677
1678         return 0;
1679
1680 free_tx_irq:
1681         be_free_irq(adapter, &adapter->tx_eq);
1682 err:
1683         dev_warn(&adapter->pdev->dev,
1684                 "MSIX Request IRQ failed - err %d\n", status);
1685         pci_disable_msix(adapter->pdev);
1686         adapter->msix_enabled = false;
1687         return status;
1688 }
1689
1690 static int be_irq_register(struct be_adapter *adapter)
1691 {
1692         struct net_device *netdev = adapter->netdev;
1693         int status;
1694
1695         if (adapter->msix_enabled) {
1696                 status = be_msix_register(adapter);
1697                 if (status == 0)
1698                         goto done;
1699                 /* INTx is not supported for VF */
1700                 if (!be_physfn(adapter))
1701                         return status;
1702         }
1703
1704         /* INTx */
1705         netdev->irq = adapter->pdev->irq;
1706         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1707                         adapter);
1708         if (status) {
1709                 dev_err(&adapter->pdev->dev,
1710                         "INTx request IRQ failed - err %d\n", status);
1711                 return status;
1712         }
1713 done:
1714         adapter->isr_registered = true;
1715         return 0;
1716 }
1717
1718 static void be_irq_unregister(struct be_adapter *adapter)
1719 {
1720         struct net_device *netdev = adapter->netdev;
1721
1722         if (!adapter->isr_registered)
1723                 return;
1724
1725         /* INTx */
1726         if (!adapter->msix_enabled) {
1727                 free_irq(netdev->irq, adapter);
1728                 goto done;
1729         }
1730
1731         /* MSIx */
1732         be_free_irq(adapter, &adapter->tx_eq);
1733         be_free_irq(adapter, &adapter->rx_eq);
1734 done:
1735         adapter->isr_registered = false;
1736 }
1737
1738 static int be_open(struct net_device *netdev)
1739 {
1740         struct be_adapter *adapter = netdev_priv(netdev);
1741         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1742         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1743         bool link_up;
1744         int status;
1745         u8 mac_speed;
1746         u16 link_speed;
1747
1748         /* First time posting */
1749         be_post_rx_frags(adapter);
1750
1751         napi_enable(&rx_eq->napi);
1752         napi_enable(&tx_eq->napi);
1753
1754         be_irq_register(adapter);
1755
1756         be_intr_set(adapter, true);
1757
1758         /* The evt queues are created in unarmed state; arm them */
1759         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1760         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1761
1762         /* Rx compl queue may be in unarmed state; rearm it */
1763         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1764
1765         /* Now that interrupts are on we can process async mcc */
1766         be_async_mcc_enable(adapter);
1767
1768         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1769                         &link_speed);
1770         if (status)
1771                 goto ret_sts;
1772         be_link_status_update(adapter, link_up);
1773
1774         if (be_physfn(adapter))
1775                 status = be_vid_config(adapter);
1776         if (status)
1777                 goto ret_sts;
1778
1779         if (be_physfn(adapter)) {
1780                 status = be_cmd_set_flow_control(adapter,
1781                                 adapter->tx_fc, adapter->rx_fc);
1782                 if (status)
1783                         goto ret_sts;
1784         }
1785
1786         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1787 ret_sts:
1788         return status;
1789 }
1790
1791 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1792 {
1793         struct be_dma_mem cmd;
1794         int status = 0;
1795         u8 mac[ETH_ALEN];
1796
1797         memset(mac, 0, ETH_ALEN);
1798
1799         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1800         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1801         if (cmd.va == NULL)
1802                 return -1;
1803         memset(cmd.va, 0, cmd.size);
1804
1805         if (enable) {
1806                 status = pci_write_config_dword(adapter->pdev,
1807                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1808                 if (status) {
1809                         dev_err(&adapter->pdev->dev,
1810                                 "Could not enable Wake-on-lan\n");
1811                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1812                                         cmd.dma);
1813                         return status;
1814                 }
1815                 status = be_cmd_enable_magic_wol(adapter,
1816                                 adapter->netdev->dev_addr, &cmd);
1817                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1818                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1819         } else {
1820                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1821                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1822                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1823         }
1824
1825         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1826         return status;
1827 }
1828
1829 static int be_setup(struct be_adapter *adapter)
1830 {
1831         struct net_device *netdev = adapter->netdev;
1832         u32 cap_flags, en_flags, vf = 0;
1833         int status;
1834         u8 mac[ETH_ALEN];
1835
1836         cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST;
1837
1838         if (be_physfn(adapter)) {
1839                 cap_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS |
1840                                 BE_IF_FLAGS_PROMISCUOUS |
1841                                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1842                 en_flags |= BE_IF_FLAGS_PASS_L3L4_ERRORS;
1843         }
1844
1845         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1846                         netdev->dev_addr, false/* pmac_invalid */,
1847                         &adapter->if_handle, &adapter->pmac_id, 0);
1848         if (status != 0)
1849                 goto do_none;
1850
1851         if (be_physfn(adapter)) {
1852                 while (vf < num_vfs) {
1853                         cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED
1854                                         | BE_IF_FLAGS_BROADCAST;
1855                         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1856                                         mac, true, &adapter->vf_if_handle[vf],
1857                                         NULL, vf+1);
1858                         if (status) {
1859                                 dev_err(&adapter->pdev->dev,
1860                                 "Interface Create failed for VF %d\n", vf);
1861                                 goto if_destroy;
1862                         }
1863                         vf++;
1864                 }
1865         } else if (!be_physfn(adapter)) {
1866                 status = be_cmd_mac_addr_query(adapter, mac,
1867                         MAC_ADDRESS_TYPE_NETWORK, false, adapter->if_handle);
1868                 if (!status) {
1869                         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
1870                         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
1871                 }
1872         }
1873
1874         status = be_tx_queues_create(adapter);
1875         if (status != 0)
1876                 goto if_destroy;
1877
1878         status = be_rx_queues_create(adapter);
1879         if (status != 0)
1880                 goto tx_qs_destroy;
1881
1882         status = be_mcc_queues_create(adapter);
1883         if (status != 0)
1884                 goto rx_qs_destroy;
1885
1886         adapter->link_speed = -1;
1887
1888         return 0;
1889
1890 rx_qs_destroy:
1891         be_rx_queues_destroy(adapter);
1892 tx_qs_destroy:
1893         be_tx_queues_destroy(adapter);
1894 if_destroy:
1895         for (vf = 0; vf < num_vfs; vf++)
1896                 if (adapter->vf_if_handle[vf])
1897                         be_cmd_if_destroy(adapter, adapter->vf_if_handle[vf]);
1898         be_cmd_if_destroy(adapter, adapter->if_handle);
1899 do_none:
1900         return status;
1901 }
1902
1903 static int be_clear(struct be_adapter *adapter)
1904 {
1905         be_mcc_queues_destroy(adapter);
1906         be_rx_queues_destroy(adapter);
1907         be_tx_queues_destroy(adapter);
1908
1909         be_cmd_if_destroy(adapter, adapter->if_handle);
1910
1911         /* tell fw we're done with firing cmds */
1912         be_cmd_fw_clean(adapter);
1913         return 0;
1914 }
1915
1916 static int be_close(struct net_device *netdev)
1917 {
1918         struct be_adapter *adapter = netdev_priv(netdev);
1919         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1920         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1921         int vec;
1922
1923         cancel_delayed_work_sync(&adapter->work);
1924
1925         be_async_mcc_disable(adapter);
1926
1927         netif_stop_queue(netdev);
1928         netif_carrier_off(netdev);
1929         adapter->link_up = false;
1930
1931         be_intr_set(adapter, false);
1932
1933         if (adapter->msix_enabled) {
1934                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1935                 synchronize_irq(vec);
1936                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1937                 synchronize_irq(vec);
1938         } else {
1939                 synchronize_irq(netdev->irq);
1940         }
1941         be_irq_unregister(adapter);
1942
1943         napi_disable(&rx_eq->napi);
1944         napi_disable(&tx_eq->napi);
1945
1946         /* Wait for all pending tx completions to arrive so that
1947          * all tx skbs are freed.
1948          */
1949         be_tx_compl_clean(adapter);
1950
1951         return 0;
1952 }
1953
1954 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1955 char flash_cookie[2][16] =      {"*** SE FLAS",
1956                                 "H DIRECTORY *** "};
1957
1958 static bool be_flash_redboot(struct be_adapter *adapter,
1959                         const u8 *p, u32 img_start, int image_size,
1960                         int hdr_size)
1961 {
1962         u32 crc_offset;
1963         u8 flashed_crc[4];
1964         int status;
1965
1966         crc_offset = hdr_size + img_start + image_size - 4;
1967
1968         p += crc_offset;
1969
1970         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1971                         (image_size - 4));
1972         if (status) {
1973                 dev_err(&adapter->pdev->dev,
1974                 "could not get crc from flash, not flashing redboot\n");
1975                 return false;
1976         }
1977
1978         /*update redboot only if crc does not match*/
1979         if (!memcmp(flashed_crc, p, 4))
1980                 return false;
1981         else
1982                 return true;
1983 }
1984
1985 static int be_flash_data(struct be_adapter *adapter,
1986                         const struct firmware *fw,
1987                         struct be_dma_mem *flash_cmd, int num_of_images)
1988
1989 {
1990         int status = 0, i, filehdr_size = 0;
1991         u32 total_bytes = 0, flash_op;
1992         int num_bytes;
1993         const u8 *p = fw->data;
1994         struct be_cmd_write_flashrom *req = flash_cmd->va;
1995         struct flash_comp *pflashcomp;
1996         int num_comp;
1997
1998         struct flash_comp gen3_flash_types[9] = {
1999                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
2000                         FLASH_IMAGE_MAX_SIZE_g3},
2001                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
2002                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
2003                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
2004                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2005                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
2006                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2007                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
2008                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2009                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
2010                         FLASH_IMAGE_MAX_SIZE_g3},
2011                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
2012                         FLASH_IMAGE_MAX_SIZE_g3},
2013                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
2014                         FLASH_IMAGE_MAX_SIZE_g3},
2015                 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
2016                         FLASH_NCSI_IMAGE_MAX_SIZE_g3}
2017         };
2018         struct flash_comp gen2_flash_types[8] = {
2019                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
2020                         FLASH_IMAGE_MAX_SIZE_g2},
2021                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
2022                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
2023                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
2024                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2025                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
2026                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2027                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
2028                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2029                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
2030                         FLASH_IMAGE_MAX_SIZE_g2},
2031                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
2032                         FLASH_IMAGE_MAX_SIZE_g2},
2033                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
2034                          FLASH_IMAGE_MAX_SIZE_g2}
2035         };
2036
2037         if (adapter->generation == BE_GEN3) {
2038                 pflashcomp = gen3_flash_types;
2039                 filehdr_size = sizeof(struct flash_file_hdr_g3);
2040                 num_comp = 9;
2041         } else {
2042                 pflashcomp = gen2_flash_types;
2043                 filehdr_size = sizeof(struct flash_file_hdr_g2);
2044                 num_comp = 8;
2045         }
2046         for (i = 0; i < num_comp; i++) {
2047                 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
2048                                 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
2049                         continue;
2050                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
2051                         (!be_flash_redboot(adapter, fw->data,
2052                          pflashcomp[i].offset, pflashcomp[i].size,
2053                          filehdr_size)))
2054                         continue;
2055                 p = fw->data;
2056                 p += filehdr_size + pflashcomp[i].offset
2057                         + (num_of_images * sizeof(struct image_hdr));
2058         if (p + pflashcomp[i].size > fw->data + fw->size)
2059                 return -1;
2060         total_bytes = pflashcomp[i].size;
2061                 while (total_bytes) {
2062                         if (total_bytes > 32*1024)
2063                                 num_bytes = 32*1024;
2064                         else
2065                                 num_bytes = total_bytes;
2066                         total_bytes -= num_bytes;
2067
2068                         if (!total_bytes)
2069                                 flash_op = FLASHROM_OPER_FLASH;
2070                         else
2071                                 flash_op = FLASHROM_OPER_SAVE;
2072                         memcpy(req->params.data_buf, p, num_bytes);
2073                         p += num_bytes;
2074                         status = be_cmd_write_flashrom(adapter, flash_cmd,
2075                                 pflashcomp[i].optype, flash_op, num_bytes);
2076                         if (status) {
2077                                 dev_err(&adapter->pdev->dev,
2078                                         "cmd to write to flash rom failed.\n");
2079                                 return -1;
2080                         }
2081                         yield();
2082                 }
2083         }
2084         return 0;
2085 }
2086
2087 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2088 {
2089         if (fhdr == NULL)
2090                 return 0;
2091         if (fhdr->build[0] == '3')
2092                 return BE_GEN3;
2093         else if (fhdr->build[0] == '2')
2094                 return BE_GEN2;
2095         else
2096                 return 0;
2097 }
2098
2099 int be_load_fw(struct be_adapter *adapter, u8 *func)
2100 {
2101         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2102         const struct firmware *fw;
2103         struct flash_file_hdr_g2 *fhdr;
2104         struct flash_file_hdr_g3 *fhdr3;
2105         struct image_hdr *img_hdr_ptr = NULL;
2106         struct be_dma_mem flash_cmd;
2107         int status, i = 0, num_imgs = 0;
2108         const u8 *p;
2109
2110         strcpy(fw_file, func);
2111
2112         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2113         if (status)
2114                 goto fw_exit;
2115
2116         p = fw->data;
2117         fhdr = (struct flash_file_hdr_g2 *) p;
2118         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2119
2120         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2121         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2122                                         &flash_cmd.dma);
2123         if (!flash_cmd.va) {
2124                 status = -ENOMEM;
2125                 dev_err(&adapter->pdev->dev,
2126                         "Memory allocation failure while flashing\n");
2127                 goto fw_exit;
2128         }
2129
2130         if ((adapter->generation == BE_GEN3) &&
2131                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2132                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2133                 num_imgs = le32_to_cpu(fhdr3->num_imgs);
2134                 for (i = 0; i < num_imgs; i++) {
2135                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2136                                         (sizeof(struct flash_file_hdr_g3) +
2137                                          i * sizeof(struct image_hdr)));
2138                         if (le32_to_cpu(img_hdr_ptr->imageid) == 1)
2139                                 status = be_flash_data(adapter, fw, &flash_cmd,
2140                                                         num_imgs);
2141                 }
2142         } else if ((adapter->generation == BE_GEN2) &&
2143                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2144                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2145         } else {
2146                 dev_err(&adapter->pdev->dev,
2147                         "UFI and Interface are not compatible for flashing\n");
2148                 status = -1;
2149         }
2150
2151         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2152                                 flash_cmd.dma);
2153         if (status) {
2154                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2155                 goto fw_exit;
2156         }
2157
2158         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2159
2160 fw_exit:
2161         release_firmware(fw);
2162         return status;
2163 }
2164
2165 static struct net_device_ops be_netdev_ops = {
2166         .ndo_open               = be_open,
2167         .ndo_stop               = be_close,
2168         .ndo_start_xmit         = be_xmit,
2169         .ndo_get_stats          = be_get_stats,
2170         .ndo_set_rx_mode        = be_set_multicast_list,
2171         .ndo_set_mac_address    = be_mac_addr_set,
2172         .ndo_change_mtu         = be_change_mtu,
2173         .ndo_validate_addr      = eth_validate_addr,
2174         .ndo_vlan_rx_register   = be_vlan_register,
2175         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2176         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2177         .ndo_set_vf_mac         = be_set_vf_mac
2178 };
2179
2180 static void be_netdev_init(struct net_device *netdev)
2181 {
2182         struct be_adapter *adapter = netdev_priv(netdev);
2183
2184         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2185                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2186                 NETIF_F_GRO;
2187
2188         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2189
2190         netdev->flags |= IFF_MULTICAST;
2191
2192         adapter->rx_csum = true;
2193
2194         /* Default settings for Rx and Tx flow control */
2195         adapter->rx_fc = true;
2196         adapter->tx_fc = true;
2197
2198         netif_set_gso_max_size(netdev, 65535);
2199
2200         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2201
2202         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2203
2204         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2205                 BE_NAPI_WEIGHT);
2206         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2207                 BE_NAPI_WEIGHT);
2208
2209         netif_carrier_off(netdev);
2210         netif_stop_queue(netdev);
2211 }
2212
2213 static void be_unmap_pci_bars(struct be_adapter *adapter)
2214 {
2215         if (adapter->csr)
2216                 iounmap(adapter->csr);
2217         if (adapter->db)
2218                 iounmap(adapter->db);
2219         if (adapter->pcicfg && be_physfn(adapter))
2220                 iounmap(adapter->pcicfg);
2221 }
2222
2223 static int be_map_pci_bars(struct be_adapter *adapter)
2224 {
2225         u8 __iomem *addr;
2226         int pcicfg_reg, db_reg;
2227
2228         if (be_physfn(adapter)) {
2229                 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2230                                 pci_resource_len(adapter->pdev, 2));
2231                 if (addr == NULL)
2232                         return -ENOMEM;
2233                 adapter->csr = addr;
2234         }
2235
2236         if (adapter->generation == BE_GEN2) {
2237                 pcicfg_reg = 1;
2238                 db_reg = 4;
2239         } else {
2240                 pcicfg_reg = 0;
2241                 if (be_physfn(adapter))
2242                         db_reg = 4;
2243                 else
2244                         db_reg = 0;
2245         }
2246         addr = ioremap_nocache(pci_resource_start(adapter->pdev, db_reg),
2247                                 pci_resource_len(adapter->pdev, db_reg));
2248         if (addr == NULL)
2249                 goto pci_map_err;
2250         adapter->db = addr;
2251
2252         if (be_physfn(adapter)) {
2253                 addr = ioremap_nocache(
2254                                 pci_resource_start(adapter->pdev, pcicfg_reg),
2255                                 pci_resource_len(adapter->pdev, pcicfg_reg));
2256                 if (addr == NULL)
2257                         goto pci_map_err;
2258                 adapter->pcicfg = addr;
2259         } else
2260                 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
2261
2262         return 0;
2263 pci_map_err:
2264         be_unmap_pci_bars(adapter);
2265         return -ENOMEM;
2266 }
2267
2268
2269 static void be_ctrl_cleanup(struct be_adapter *adapter)
2270 {
2271         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2272
2273         be_unmap_pci_bars(adapter);
2274
2275         if (mem->va)
2276                 pci_free_consistent(adapter->pdev, mem->size,
2277                         mem->va, mem->dma);
2278
2279         mem = &adapter->mc_cmd_mem;
2280         if (mem->va)
2281                 pci_free_consistent(adapter->pdev, mem->size,
2282                         mem->va, mem->dma);
2283 }
2284
2285 static int be_ctrl_init(struct be_adapter *adapter)
2286 {
2287         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2288         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2289         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2290         int status;
2291
2292         status = be_map_pci_bars(adapter);
2293         if (status)
2294                 goto done;
2295
2296         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2297         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2298                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2299         if (!mbox_mem_alloc->va) {
2300                 status = -ENOMEM;
2301                 goto unmap_pci_bars;
2302         }
2303
2304         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2305         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2306         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2307         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2308
2309         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2310         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2311                         &mc_cmd_mem->dma);
2312         if (mc_cmd_mem->va == NULL) {
2313                 status = -ENOMEM;
2314                 goto free_mbox;
2315         }
2316         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2317
2318         spin_lock_init(&adapter->mbox_lock);
2319         spin_lock_init(&adapter->mcc_lock);
2320         spin_lock_init(&adapter->mcc_cq_lock);
2321
2322         init_completion(&adapter->flash_compl);
2323         pci_save_state(adapter->pdev);
2324         return 0;
2325
2326 free_mbox:
2327         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2328                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2329
2330 unmap_pci_bars:
2331         be_unmap_pci_bars(adapter);
2332
2333 done:
2334         return status;
2335 }
2336
2337 static void be_stats_cleanup(struct be_adapter *adapter)
2338 {
2339         struct be_stats_obj *stats = &adapter->stats;
2340         struct be_dma_mem *cmd = &stats->cmd;
2341
2342         if (cmd->va)
2343                 pci_free_consistent(adapter->pdev, cmd->size,
2344                         cmd->va, cmd->dma);
2345 }
2346
2347 static int be_stats_init(struct be_adapter *adapter)
2348 {
2349         struct be_stats_obj *stats = &adapter->stats;
2350         struct be_dma_mem *cmd = &stats->cmd;
2351
2352         cmd->size = sizeof(struct be_cmd_req_get_stats);
2353         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2354         if (cmd->va == NULL)
2355                 return -1;
2356         memset(cmd->va, 0, cmd->size);
2357         return 0;
2358 }
2359
2360 static void __devexit be_remove(struct pci_dev *pdev)
2361 {
2362         struct be_adapter *adapter = pci_get_drvdata(pdev);
2363
2364         if (!adapter)
2365                 return;
2366
2367         unregister_netdev(adapter->netdev);
2368
2369         be_clear(adapter);
2370
2371         be_stats_cleanup(adapter);
2372
2373         be_ctrl_cleanup(adapter);
2374
2375         be_sriov_disable(adapter);
2376
2377         be_msix_disable(adapter);
2378
2379         pci_set_drvdata(pdev, NULL);
2380         pci_release_regions(pdev);
2381         pci_disable_device(pdev);
2382
2383         free_netdev(adapter->netdev);
2384 }
2385
2386 static int be_get_config(struct be_adapter *adapter)
2387 {
2388         int status;
2389         u8 mac[ETH_ALEN];
2390
2391         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2392         if (status)
2393                 return status;
2394
2395         status = be_cmd_query_fw_cfg(adapter,
2396                                 &adapter->port_num, &adapter->cap);
2397         if (status)
2398                 return status;
2399
2400         memset(mac, 0, ETH_ALEN);
2401
2402         if (be_physfn(adapter)) {
2403                 status = be_cmd_mac_addr_query(adapter, mac,
2404                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2405
2406                 if (status)
2407                         return status;
2408
2409                 if (!is_valid_ether_addr(mac))
2410                         return -EADDRNOTAVAIL;
2411
2412                 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2413                 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2414         }
2415
2416         if (adapter->cap & 0x400)
2417                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2418         else
2419                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2420
2421         return 0;
2422 }
2423
2424 static int __devinit be_probe(struct pci_dev *pdev,
2425                         const struct pci_device_id *pdev_id)
2426 {
2427         int status = 0;
2428         struct be_adapter *adapter;
2429         struct net_device *netdev;
2430
2431
2432         status = pci_enable_device(pdev);
2433         if (status)
2434                 goto do_none;
2435
2436         status = pci_request_regions(pdev, DRV_NAME);
2437         if (status)
2438                 goto disable_dev;
2439         pci_set_master(pdev);
2440
2441         netdev = alloc_etherdev(sizeof(struct be_adapter));
2442         if (netdev == NULL) {
2443                 status = -ENOMEM;
2444                 goto rel_reg;
2445         }
2446         adapter = netdev_priv(netdev);
2447
2448         switch (pdev->device) {
2449         case BE_DEVICE_ID1:
2450         case OC_DEVICE_ID1:
2451                 adapter->generation = BE_GEN2;
2452                 break;
2453         case BE_DEVICE_ID2:
2454         case OC_DEVICE_ID2:
2455                 adapter->generation = BE_GEN3;
2456                 break;
2457         default:
2458                 adapter->generation = 0;
2459         }
2460
2461         adapter->pdev = pdev;
2462         pci_set_drvdata(pdev, adapter);
2463         adapter->netdev = netdev;
2464         be_netdev_init(netdev);
2465         SET_NETDEV_DEV(netdev, &pdev->dev);
2466
2467         be_msix_enable(adapter);
2468
2469         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2470         if (!status) {
2471                 netdev->features |= NETIF_F_HIGHDMA;
2472         } else {
2473                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2474                 if (status) {
2475                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2476                         goto free_netdev;
2477                 }
2478         }
2479
2480         be_sriov_enable(adapter);
2481
2482         status = be_ctrl_init(adapter);
2483         if (status)
2484                 goto free_netdev;
2485
2486         /* sync up with fw's ready state */
2487         if (be_physfn(adapter)) {
2488                 status = be_cmd_POST(adapter);
2489                 if (status)
2490                         goto ctrl_clean;
2491         }
2492
2493         /* tell fw we're ready to fire cmds */
2494         status = be_cmd_fw_init(adapter);
2495         if (status)
2496                 goto ctrl_clean;
2497
2498         if (be_physfn(adapter)) {
2499                 status = be_cmd_reset_function(adapter);
2500                 if (status)
2501                         goto ctrl_clean;
2502         }
2503
2504         status = be_stats_init(adapter);
2505         if (status)
2506                 goto ctrl_clean;
2507
2508         status = be_get_config(adapter);
2509         if (status)
2510                 goto stats_clean;
2511
2512         INIT_DELAYED_WORK(&adapter->work, be_worker);
2513
2514         status = be_setup(adapter);
2515         if (status)
2516                 goto stats_clean;
2517
2518         status = register_netdev(netdev);
2519         if (status != 0)
2520                 goto unsetup;
2521
2522         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2523         return 0;
2524
2525 unsetup:
2526         be_clear(adapter);
2527 stats_clean:
2528         be_stats_cleanup(adapter);
2529 ctrl_clean:
2530         be_ctrl_cleanup(adapter);
2531 free_netdev:
2532         be_msix_disable(adapter);
2533         be_sriov_disable(adapter);
2534         free_netdev(adapter->netdev);
2535         pci_set_drvdata(pdev, NULL);
2536 rel_reg:
2537         pci_release_regions(pdev);
2538 disable_dev:
2539         pci_disable_device(pdev);
2540 do_none:
2541         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2542         return status;
2543 }
2544
2545 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2546 {
2547         struct be_adapter *adapter = pci_get_drvdata(pdev);
2548         struct net_device *netdev =  adapter->netdev;
2549
2550         if (adapter->wol)
2551                 be_setup_wol(adapter, true);
2552
2553         netif_device_detach(netdev);
2554         if (netif_running(netdev)) {
2555                 rtnl_lock();
2556                 be_close(netdev);
2557                 rtnl_unlock();
2558         }
2559         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2560         be_clear(adapter);
2561
2562         pci_save_state(pdev);
2563         pci_disable_device(pdev);
2564         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2565         return 0;
2566 }
2567
2568 static int be_resume(struct pci_dev *pdev)
2569 {
2570         int status = 0;
2571         struct be_adapter *adapter = pci_get_drvdata(pdev);
2572         struct net_device *netdev =  adapter->netdev;
2573
2574         netif_device_detach(netdev);
2575
2576         status = pci_enable_device(pdev);
2577         if (status)
2578                 return status;
2579
2580         pci_set_power_state(pdev, 0);
2581         pci_restore_state(pdev);
2582
2583         /* tell fw we're ready to fire cmds */
2584         status = be_cmd_fw_init(adapter);
2585         if (status)
2586                 return status;
2587
2588         be_setup(adapter);
2589         if (netif_running(netdev)) {
2590                 rtnl_lock();
2591                 be_open(netdev);
2592                 rtnl_unlock();
2593         }
2594         netif_device_attach(netdev);
2595
2596         if (adapter->wol)
2597                 be_setup_wol(adapter, false);
2598         return 0;
2599 }
2600
2601 /*
2602  * An FLR will stop BE from DMAing any data.
2603  */
2604 static void be_shutdown(struct pci_dev *pdev)
2605 {
2606         struct be_adapter *adapter = pci_get_drvdata(pdev);
2607         struct net_device *netdev =  adapter->netdev;
2608
2609         netif_device_detach(netdev);
2610
2611         be_cmd_reset_function(adapter);
2612
2613         if (adapter->wol)
2614                 be_setup_wol(adapter, true);
2615
2616         pci_disable_device(pdev);
2617 }
2618
2619 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2620                                 pci_channel_state_t state)
2621 {
2622         struct be_adapter *adapter = pci_get_drvdata(pdev);
2623         struct net_device *netdev =  adapter->netdev;
2624
2625         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2626
2627         adapter->eeh_err = true;
2628
2629         netif_device_detach(netdev);
2630
2631         if (netif_running(netdev)) {
2632                 rtnl_lock();
2633                 be_close(netdev);
2634                 rtnl_unlock();
2635         }
2636         be_clear(adapter);
2637
2638         if (state == pci_channel_io_perm_failure)
2639                 return PCI_ERS_RESULT_DISCONNECT;
2640
2641         pci_disable_device(pdev);
2642
2643         return PCI_ERS_RESULT_NEED_RESET;
2644 }
2645
2646 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2647 {
2648         struct be_adapter *adapter = pci_get_drvdata(pdev);
2649         int status;
2650
2651         dev_info(&adapter->pdev->dev, "EEH reset\n");
2652         adapter->eeh_err = false;
2653
2654         status = pci_enable_device(pdev);
2655         if (status)
2656                 return PCI_ERS_RESULT_DISCONNECT;
2657
2658         pci_set_master(pdev);
2659         pci_set_power_state(pdev, 0);
2660         pci_restore_state(pdev);
2661
2662         /* Check if card is ok and fw is ready */
2663         status = be_cmd_POST(adapter);
2664         if (status)
2665                 return PCI_ERS_RESULT_DISCONNECT;
2666
2667         return PCI_ERS_RESULT_RECOVERED;
2668 }
2669
2670 static void be_eeh_resume(struct pci_dev *pdev)
2671 {
2672         int status = 0;
2673         struct be_adapter *adapter = pci_get_drvdata(pdev);
2674         struct net_device *netdev =  adapter->netdev;
2675
2676         dev_info(&adapter->pdev->dev, "EEH resume\n");
2677
2678         pci_save_state(pdev);
2679
2680         /* tell fw we're ready to fire cmds */
2681         status = be_cmd_fw_init(adapter);
2682         if (status)
2683                 goto err;
2684
2685         status = be_setup(adapter);
2686         if (status)
2687                 goto err;
2688
2689         if (netif_running(netdev)) {
2690                 status = be_open(netdev);
2691                 if (status)
2692                         goto err;
2693         }
2694         netif_device_attach(netdev);
2695         return;
2696 err:
2697         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2698 }
2699
2700 static struct pci_error_handlers be_eeh_handlers = {
2701         .error_detected = be_eeh_err_detected,
2702         .slot_reset = be_eeh_reset,
2703         .resume = be_eeh_resume,
2704 };
2705
2706 static struct pci_driver be_driver = {
2707         .name = DRV_NAME,
2708         .id_table = be_dev_ids,
2709         .probe = be_probe,
2710         .remove = be_remove,
2711         .suspend = be_suspend,
2712         .resume = be_resume,
2713         .shutdown = be_shutdown,
2714         .err_handler = &be_eeh_handlers
2715 };
2716
2717 static int __init be_init_module(void)
2718 {
2719         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2720             rx_frag_size != 2048) {
2721                 printk(KERN_WARNING DRV_NAME
2722                         " : Module param rx_frag_size must be 2048/4096/8192."
2723                         " Using 2048\n");
2724                 rx_frag_size = 2048;
2725         }
2726
2727         if (num_vfs > 32) {
2728                 printk(KERN_WARNING DRV_NAME
2729                         " : Module param num_vfs must not be greater than 32."
2730                         "Using 32\n");
2731                 num_vfs = 32;
2732         }
2733
2734         return pci_register_driver(&be_driver);
2735 }
2736 module_init(be_init_module);
2737
2738 static void __exit be_exit_module(void)
2739 {
2740         pci_unregister_driver(&be_driver);
2741 }
2742 module_exit(be_exit_module);