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 (dma != 0) {
 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->len - skb->data_len;
 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, pci_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         return;
 834 }
 835
 836 /* Process the RX completion indicated by rxcp when GRO is disabled */
 837 static void be_rx_compl_process(struct be_adapter *adapter,
 838                         struct be_eth_rx_compl *rxcp)
 839 {
 840         struct sk_buff *skb;
 841         u32 vlanf, vid;
 842         u16 num_rcvd;
 843         u8 vtm;
 844
 845         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 846         /* Is it a flush compl that has no data */
 847         if (unlikely(num_rcvd == 0))
 848                 return;
 849
 850         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 851         if (unlikely(!skb)) {
 852                 if (net_ratelimit())
 853                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 854                 be_rx_compl_discard(adapter, rxcp);
 855                 return;
 856         }
 857
 858         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 859
 860         if (do_pkt_csum(rxcp, adapter->rx_csum))
 861                 skb->ip_summed = CHECKSUM_NONE;
 862         else
 863                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 864
 865         skb->truesize = skb->len + sizeof(struct sk_buff);
 866         skb->protocol = eth_type_trans(skb, adapter->netdev);
 867
 868         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 869         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 870
 871         /* vlanf could be wrongly set in some cards.
 872          * ignore if vtm is not set */
 873         if ((adapter->cap & 0x400) && !vtm)
 874                 vlanf = 0;
 875
 876         if (unlikely(vlanf)) {
 877                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 878                         kfree_skb(skb);
 879                         return;
 880                 }
 881                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 882                 vid = be16_to_cpu(vid);
 883                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 884         } else {
 885                 netif_receive_skb(skb);
 886         }
 887
 888         return;
 889 }
 890
 891 /* Process the RX completion indicated by rxcp when GRO is enabled */
 892 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 893                         struct be_eth_rx_compl *rxcp)
 894 {
 895         struct be_rx_page_info *page_info;
 896         struct sk_buff *skb = NULL;
 897         struct be_queue_info *rxq = &adapter->rx_obj.q;
 898         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 899         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 900         u16 i, rxq_idx = 0, vid, j;
 901         u8 vtm;
 902
 903         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 904         /* Is it a flush compl that has no data */
 905         if (unlikely(num_rcvd == 0))
 906                 return;
 907
 908         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 909         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 910         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 911         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 912
 913         /* vlanf could be wrongly set in some cards.
 914          * ignore if vtm is not set */
 915         if ((adapter->cap & 0x400) && !vtm)
 916                 vlanf = 0;
 917
 918         skb = napi_get_frags(&eq_obj->napi);
 919         if (!skb) {
 920                 be_rx_compl_discard(adapter, rxcp);
 921                 return;
 922         }
 923
 924         remaining = pkt_size;
 925         for (i = 0, j = -1; i < num_rcvd; i++) {
 926                 page_info = get_rx_page_info(adapter, rxq_idx);
 927
 928                 curr_frag_len = min(remaining, rx_frag_size);
 929
 930                 /* Coalesce all frags from the same physical page in one slot */
 931                 if (i == 0 || page_info->page_offset == 0) {
 932                         /* First frag or Fresh page */
 933                         j++;
 934                         skb_shinfo(skb)->frags[j].page = page_info->page;
 935                         skb_shinfo(skb)->frags[j].page_offset =
 936                                                         page_info->page_offset;
 937                         skb_shinfo(skb)->frags[j].size = 0;
 938                 } else {
 939                         put_page(page_info->page);
 940                 }
 941                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 942
 943                 remaining -= curr_frag_len;
 944                 index_inc(&rxq_idx, rxq->len);
 945                 memset(page_info, 0, sizeof(*page_info));
 946         }
 947         BUG_ON(j > MAX_SKB_FRAGS);
 948
 949         skb_shinfo(skb)->nr_frags = j + 1;
 950         skb->len = pkt_size;
 951         skb->data_len = pkt_size;
 952         skb->truesize += pkt_size;
 953         skb->ip_summed = CHECKSUM_UNNECESSARY;
 954
 955         if (likely(!vlanf)) {
 956                 napi_gro_frags(&eq_obj->napi);
 957         } else {
 958                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 959                 vid = be16_to_cpu(vid);
 960
 961                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 962                         return;
 963
 964                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 965         }
 966
 967         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 968         return;
 969 }
 970
 971 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 972 {
 973         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 974
 975         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 976                 return NULL;
 977
 978         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 979
 980         queue_tail_inc(&adapter->rx_obj.cq);
 981         return rxcp;
 982 }
 983
 984 /* To reset the valid bit, we need to reset the whole word as
 985  * when walking the queue the valid entries are little-endian
 986  * and invalid entries are host endian
 987  */
 988 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 989 {
 990         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 991 }
 992
 993 static inline struct page *be_alloc_pages(u32 size)
 994 {
 995         gfp_t alloc_flags = GFP_ATOMIC;
 996         u32 order = get_order(size);
 997         if (order > 0)
 998                 alloc_flags |= __GFP_COMP;
 999         return  alloc_pages(alloc_flags, order);
1000 }
1001
1002 /*
1003  * Allocate a page, split it to fragments of size rx_frag_size and post as
1004  * receive buffers to BE
1005  */
1006 static void be_post_rx_frags(struct be_adapter *adapter)
1007 {
1008         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
1009         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
1010         struct be_queue_info *rxq = &adapter->rx_obj.q;
1011         struct page *pagep = NULL;
1012         struct be_eth_rx_d *rxd;
1013         u64 page_dmaaddr = 0, frag_dmaaddr;
1014         u32 posted, page_offset = 0;
1015
1016         page_info = &page_info_tbl[rxq->head];
1017         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
1018                 if (!pagep) {
1019                         pagep = be_alloc_pages(adapter->big_page_size);
1020                         if (unlikely(!pagep)) {
1021                                 drvr_stats(adapter)->be_ethrx_post_fail++;
1022                                 break;
1023                         }
1024                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
1025                                                 adapter->big_page_size,
1026                                                 PCI_DMA_FROMDEVICE);
1027                         page_info->page_offset = 0;
1028                 } else {
1029                         get_page(pagep);
1030                         page_info->page_offset = page_offset + rx_frag_size;
1031                 }
1032                 page_offset = page_info->page_offset;
1033                 page_info->page = pagep;
1034                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
1035                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
1036
1037                 rxd = queue_head_node(rxq);
1038                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1039                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1040
1041                 /* Any space left in the current big page for another frag? */
1042                 if ((page_offset + rx_frag_size + rx_frag_size) >
1043                                         adapter->big_page_size) {
1044                         pagep = NULL;
1045                         page_info->last_page_user = true;
1046                 }
1047
1048                 prev_page_info = page_info;
1049                 queue_head_inc(rxq);
1050                 page_info = &page_info_tbl[rxq->head];
1051         }
1052         if (pagep)
1053                 prev_page_info->last_page_user = true;
1054
1055         if (posted) {
1056                 atomic_add(posted, &rxq->used);
1057                 be_rxq_notify(adapter, rxq->id, posted);
1058         } else if (atomic_read(&rxq->used) == 0) {
1059                 /* Let be_worker replenish when memory is available */
1060                 adapter->rx_post_starved = true;
1061         }
1062
1063         return;
1064 }
1065
1066 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1067 {
1068         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1069
1070         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1071                 return NULL;
1072
1073         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1074
1075         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1076
1077         queue_tail_inc(tx_cq);
1078         return txcp;
1079 }
1080
1081 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1082 {
1083         struct be_queue_info *txq = &adapter->tx_obj.q;
1084         struct be_eth_wrb *wrb;
1085         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1086         struct sk_buff *sent_skb;
1087         u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1088         bool unmap_skb_hdr = true;
1089
1090         sent_skb = sent_skbs[txq->tail];
1091         BUG_ON(!sent_skb);
1092         sent_skbs[txq->tail] = NULL;
1093
1094         /* skip header wrb */
1095         queue_tail_inc(txq);
1096
1097         do {
1098                 cur_index = txq->tail;
1099                 wrb = queue_tail_node(txq);
1100                 unmap_tx_frag(adapter->pdev, wrb, (unmap_skb_hdr &&
1101                                         sent_skb->len > sent_skb->data_len));
1102                 unmap_skb_hdr = false;
1103
1104                 num_wrbs++;
1105                 queue_tail_inc(txq);
1106         } while (cur_index != last_index);
1107
1108         atomic_sub(num_wrbs, &txq->used);
1109
1110         kfree_skb(sent_skb);
1111 }
1112
1113 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1114 {
1115         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1116
1117         if (!eqe->evt)
1118                 return NULL;
1119
1120         eqe->evt = le32_to_cpu(eqe->evt);
1121         queue_tail_inc(&eq_obj->q);
1122         return eqe;
1123 }
1124
1125 static int event_handle(struct be_adapter *adapter,
1126                         struct be_eq_obj *eq_obj)
1127 {
1128         struct be_eq_entry *eqe;
1129         u16 num = 0;
1130
1131         while ((eqe = event_get(eq_obj)) != NULL) {
1132                 eqe->evt = 0;
1133                 num++;
1134         }
1135
1136         /* Deal with any spurious interrupts that come
1137          * without events
1138          */
1139         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1140         if (num)
1141                 napi_schedule(&eq_obj->napi);
1142
1143         return num;
1144 }
1145
1146 /* Just read and notify events without processing them.
1147  * Used at the time of destroying event queues */
1148 static void be_eq_clean(struct be_adapter *adapter,
1149                         struct be_eq_obj *eq_obj)
1150 {
1151         struct be_eq_entry *eqe;
1152         u16 num = 0;
1153
1154         while ((eqe = event_get(eq_obj)) != NULL) {
1155                 eqe->evt = 0;
1156                 num++;
1157         }
1158
1159         if (num)
1160                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1161 }
1162
1163 static void be_rx_q_clean(struct be_adapter *adapter)
1164 {
1165         struct be_rx_page_info *page_info;
1166         struct be_queue_info *rxq = &adapter->rx_obj.q;
1167         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1168         struct be_eth_rx_compl *rxcp;
1169         u16 tail;
1170
1171         /* First cleanup pending rx completions */
1172         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1173                 be_rx_compl_discard(adapter, rxcp);
1174                 be_rx_compl_reset(rxcp);
1175                 be_cq_notify(adapter, rx_cq->id, true, 1);
1176         }
1177
1178         /* Then free posted rx buffer that were not used */
1179         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1180         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1181                 page_info = get_rx_page_info(adapter, tail);
1182                 put_page(page_info->page);
1183                 memset(page_info, 0, sizeof(*page_info));
1184         }
1185         BUG_ON(atomic_read(&rxq->used));
1186 }
1187
1188 static void be_tx_compl_clean(struct be_adapter *adapter)
1189 {
1190         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1191         struct be_queue_info *txq = &adapter->tx_obj.q;
1192         struct be_eth_tx_compl *txcp;
1193         u16 end_idx, cmpl = 0, timeo = 0;
1194         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1195         struct sk_buff *sent_skb;
1196         bool dummy_wrb;
1197
1198         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1199         do {
1200                 while ((txcp = be_tx_compl_get(tx_cq))) {
1201                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1202                                         wrb_index, txcp);
1203                         be_tx_compl_process(adapter, end_idx);
1204                         cmpl++;
1205                 }
1206                 if (cmpl) {
1207                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1208                         cmpl = 0;
1209                 }
1210
1211                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1212                         break;
1213
1214                 mdelay(1);
1215         } while (true);
1216
1217         if (atomic_read(&txq->used))
1218                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1219                         atomic_read(&txq->used));
1220
1221         /* free posted tx for which compls will never arrive */
1222         while (atomic_read(&txq->used)) {
1223                 sent_skb = sent_skbs[txq->tail];
1224                 end_idx = txq->tail;
1225                 index_adv(&end_idx,
1226                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1227                 be_tx_compl_process(adapter, end_idx);
1228         }
1229 }
1230
1231 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1232 {
1233         struct be_queue_info *q;
1234
1235         q = &adapter->mcc_obj.q;
1236         if (q->created)
1237                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1238         be_queue_free(adapter, q);
1239
1240         q = &adapter->mcc_obj.cq;
1241         if (q->created)
1242                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1243         be_queue_free(adapter, q);
1244 }
1245
1246 /* Must be called only after TX qs are created as MCC shares TX EQ */
1247 static int be_mcc_queues_create(struct be_adapter *adapter)
1248 {
1249         struct be_queue_info *q, *cq;
1250
1251         /* Alloc MCC compl queue */
1252         cq = &adapter->mcc_obj.cq;
1253         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1254                         sizeof(struct be_mcc_compl)))
1255                 goto err;
1256
1257         /* Ask BE to create MCC compl queue; share TX's eq */
1258         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1259                 goto mcc_cq_free;
1260
1261         /* Alloc MCC queue */
1262         q = &adapter->mcc_obj.q;
1263         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1264                 goto mcc_cq_destroy;
1265
1266         /* Ask BE to create MCC queue */
1267         if (be_cmd_mccq_create(adapter, q, cq))
1268                 goto mcc_q_free;
1269
1270         return 0;
1271
1272 mcc_q_free:
1273         be_queue_free(adapter, q);
1274 mcc_cq_destroy:
1275         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1276 mcc_cq_free:
1277         be_queue_free(adapter, cq);
1278 err:
1279         return -1;
1280 }
1281
1282 static void be_tx_queues_destroy(struct be_adapter *adapter)
1283 {
1284         struct be_queue_info *q;
1285
1286         q = &adapter->tx_obj.q;
1287         if (q->created)
1288                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1289         be_queue_free(adapter, q);
1290
1291         q = &adapter->tx_obj.cq;
1292         if (q->created)
1293                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1294         be_queue_free(adapter, q);
1295
1296         /* Clear any residual events */
1297         be_eq_clean(adapter, &adapter->tx_eq);
1298
1299         q = &adapter->tx_eq.q;
1300         if (q->created)
1301                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1302         be_queue_free(adapter, q);
1303 }
1304
1305 static int be_tx_queues_create(struct be_adapter *adapter)
1306 {
1307         struct be_queue_info *eq, *q, *cq;
1308
1309         adapter->tx_eq.max_eqd = 0;
1310         adapter->tx_eq.min_eqd = 0;
1311         adapter->tx_eq.cur_eqd = 96;
1312         adapter->tx_eq.enable_aic = false;
1313         /* Alloc Tx Event queue */
1314         eq = &adapter->tx_eq.q;
1315         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1316                 return -1;
1317
1318         /* Ask BE to create Tx Event queue */
1319         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1320                 goto tx_eq_free;
1321         adapter->base_eq_id = adapter->tx_eq.q.id;
1322
1323         /* Alloc TX eth compl queue */
1324         cq = &adapter->tx_obj.cq;
1325         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1326                         sizeof(struct be_eth_tx_compl)))
1327                 goto tx_eq_destroy;
1328
1329         /* Ask BE to create Tx eth compl queue */
1330         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1331                 goto tx_cq_free;
1332
1333         /* Alloc TX eth queue */
1334         q = &adapter->tx_obj.q;
1335         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1336                 goto tx_cq_destroy;
1337
1338         /* Ask BE to create Tx eth queue */
1339         if (be_cmd_txq_create(adapter, q, cq))
1340                 goto tx_q_free;
1341         return 0;
1342
1343 tx_q_free:
1344         be_queue_free(adapter, q);
1345 tx_cq_destroy:
1346         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1347 tx_cq_free:
1348         be_queue_free(adapter, cq);
1349 tx_eq_destroy:
1350         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1351 tx_eq_free:
1352         be_queue_free(adapter, eq);
1353         return -1;
1354 }
1355
1356 static void be_rx_queues_destroy(struct be_adapter *adapter)
1357 {
1358         struct be_queue_info *q;
1359
1360         q = &adapter->rx_obj.q;
1361         if (q->created) {
1362                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1363
1364                 /* After the rxq is invalidated, wait for a grace time
1365                  * of 1ms for all dma to end and the flush compl to arrive
1366                  */
1367                 mdelay(1);
1368                 be_rx_q_clean(adapter);
1369         }
1370         be_queue_free(adapter, q);
1371
1372         q = &adapter->rx_obj.cq;
1373         if (q->created)
1374                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1375         be_queue_free(adapter, q);
1376
1377         /* Clear any residual events */
1378         be_eq_clean(adapter, &adapter->rx_eq);
1379
1380         q = &adapter->rx_eq.q;
1381         if (q->created)
1382                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1383         be_queue_free(adapter, q);
1384 }
1385
1386 static int be_rx_queues_create(struct be_adapter *adapter)
1387 {
1388         struct be_queue_info *eq, *q, *cq;
1389         int rc;
1390
1391         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1392         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1393         adapter->rx_eq.min_eqd = 0;
1394         adapter->rx_eq.cur_eqd = 0;
1395         adapter->rx_eq.enable_aic = true;
1396
1397         /* Alloc Rx Event queue */
1398         eq = &adapter->rx_eq.q;
1399         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1400                                 sizeof(struct be_eq_entry));
1401         if (rc)
1402                 return rc;
1403
1404         /* Ask BE to create Rx Event queue */
1405         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1406         if (rc)
1407                 goto rx_eq_free;
1408
1409         /* Alloc RX eth compl queue */
1410         cq = &adapter->rx_obj.cq;
1411         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1412                         sizeof(struct be_eth_rx_compl));
1413         if (rc)
1414                 goto rx_eq_destroy;
1415
1416         /* Ask BE to create Rx eth compl queue */
1417         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1418         if (rc)
1419                 goto rx_cq_free;
1420
1421         /* Alloc RX eth queue */
1422         q = &adapter->rx_obj.q;
1423         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1424         if (rc)
1425                 goto rx_cq_destroy;
1426
1427         /* Ask BE to create Rx eth queue */
1428         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1429                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1430         if (rc)
1431                 goto rx_q_free;
1432
1433         return 0;
1434 rx_q_free:
1435         be_queue_free(adapter, q);
1436 rx_cq_destroy:
1437         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1438 rx_cq_free:
1439         be_queue_free(adapter, cq);
1440 rx_eq_destroy:
1441         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1442 rx_eq_free:
1443         be_queue_free(adapter, eq);
1444         return rc;
1445 }
1446
1447 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1448 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1449 {
1450         return eq_id - adapter->base_eq_id;
1451 }
1452
1453 static irqreturn_t be_intx(int irq, void *dev)
1454 {
1455         struct be_adapter *adapter = dev;
1456         int isr;
1457
1458         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1459                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1460         if (!isr)
1461                 return IRQ_NONE;
1462
1463         event_handle(adapter, &adapter->tx_eq);
1464         event_handle(adapter, &adapter->rx_eq);
1465
1466         return IRQ_HANDLED;
1467 }
1468
1469 static irqreturn_t be_msix_rx(int irq, void *dev)
1470 {
1471         struct be_adapter *adapter = dev;
1472
1473         event_handle(adapter, &adapter->rx_eq);
1474
1475         return IRQ_HANDLED;
1476 }
1477
1478 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1479 {
1480         struct be_adapter *adapter = dev;
1481
1482         event_handle(adapter, &adapter->tx_eq);
1483
1484         return IRQ_HANDLED;
1485 }
1486
1487 static inline bool do_gro(struct be_adapter *adapter,
1488                         struct be_eth_rx_compl *rxcp)
1489 {
1490         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1491         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1492
1493         if (err)
1494                 drvr_stats(adapter)->be_rxcp_err++;
1495
1496         return (tcp_frame && !err) ? true : false;
1497 }
1498
1499 int be_poll_rx(struct napi_struct *napi, int budget)
1500 {
1501         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1502         struct be_adapter *adapter =
1503                 container_of(rx_eq, struct be_adapter, rx_eq);
1504         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1505         struct be_eth_rx_compl *rxcp;
1506         u32 work_done;
1507
1508         adapter->stats.drvr_stats.be_rx_polls++;
1509         for (work_done = 0; work_done < budget; work_done++) {
1510                 rxcp = be_rx_compl_get(adapter);
1511                 if (!rxcp)
1512                         break;
1513
1514                 if (do_gro(adapter, rxcp))
1515                         be_rx_compl_process_gro(adapter, rxcp);
1516                 else
1517                         be_rx_compl_process(adapter, rxcp);
1518
1519                 be_rx_compl_reset(rxcp);
1520         }
1521
1522         /* Refill the queue */
1523         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1524                 be_post_rx_frags(adapter);
1525
1526         /* All consumed */
1527         if (work_done < budget) {
1528                 napi_complete(napi);
1529                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1530         } else {
1531                 /* More to be consumed; continue with interrupts disabled */
1532                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1533         }
1534         return work_done;
1535 }
1536
1537 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1538  * For TX/MCC we don't honour budget; consume everything
1539  */
1540 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1541 {
1542         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1543         struct be_adapter *adapter =
1544                 container_of(tx_eq, struct be_adapter, tx_eq);
1545         struct be_queue_info *txq = &adapter->tx_obj.q;
1546         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1547         struct be_eth_tx_compl *txcp;
1548         int tx_compl = 0, mcc_compl, status = 0;
1549         u16 end_idx;
1550
1551         while ((txcp = be_tx_compl_get(tx_cq))) {
1552                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1553                                 wrb_index, txcp);
1554                 be_tx_compl_process(adapter, end_idx);
1555                 tx_compl++;
1556         }
1557
1558         mcc_compl = be_process_mcc(adapter, &status);
1559
1560         napi_complete(napi);
1561
1562         if (mcc_compl) {
1563                 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1564                 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1565         }
1566
1567         if (tx_compl) {
1568                 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1569
1570                 /* As Tx wrbs have been freed up, wake up netdev queue if
1571                  * it was stopped due to lack of tx wrbs.
1572                  */
1573                 if (netif_queue_stopped(adapter->netdev) &&
1574                         atomic_read(&txq->used) < txq->len / 2) {
1575                         netif_wake_queue(adapter->netdev);
1576                 }
1577
1578                 drvr_stats(adapter)->be_tx_events++;
1579                 drvr_stats(adapter)->be_tx_compl += tx_compl;
1580         }
1581
1582         return 1;
1583 }
1584
1585 static void be_worker(struct work_struct *work)
1586 {
1587         struct be_adapter *adapter =
1588                 container_of(work, struct be_adapter, work.work);
1589
1590         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1591
1592         /* Set EQ delay */
1593         be_rx_eqd_update(adapter);
1594
1595         be_tx_rate_update(adapter);
1596         be_rx_rate_update(adapter);
1597
1598         if (adapter->rx_post_starved) {
1599                 adapter->rx_post_starved = false;
1600                 be_post_rx_frags(adapter);
1601         }
1602
1603         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1604 }
1605
1606 static void be_msix_disable(struct be_adapter *adapter)
1607 {
1608         if (adapter->msix_enabled) {
1609                 pci_disable_msix(adapter->pdev);
1610                 adapter->msix_enabled = false;
1611         }
1612 }
1613
1614 static void be_msix_enable(struct be_adapter *adapter)
1615 {
1616         int i, status;
1617
1618         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1619                 adapter->msix_entries[i].entry = i;
1620
1621         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1622                 BE_NUM_MSIX_VECTORS);
1623         if (status == 0)
1624                 adapter->msix_enabled = true;
1625         return;
1626 }
1627
1628 static void be_sriov_enable(struct be_adapter *adapter)
1629 {
1630 #ifdef CONFIG_PCI_IOV
1631         int status;
1632         if (be_physfn(adapter) && num_vfs) {
1633                 status = pci_enable_sriov(adapter->pdev, num_vfs);
1634                 adapter->sriov_enabled = status ? false : true;
1635         }
1636 #endif
1637         return;
1638 }
1639
1640 static void be_sriov_disable(struct be_adapter *adapter)
1641 {
1642 #ifdef CONFIG_PCI_IOV
1643         if (adapter->sriov_enabled) {
1644                 pci_disable_sriov(adapter->pdev);
1645                 adapter->sriov_enabled = false;
1646         }
1647 #endif
1648 }
1649
1650 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1651 {
1652         return adapter->msix_entries[
1653                         be_evt_bit_get(adapter, eq_id)].vector;
1654 }
1655
1656 static int be_request_irq(struct be_adapter *adapter,
1657                 struct be_eq_obj *eq_obj,
1658                 void *handler, char *desc)
1659 {
1660         struct net_device *netdev = adapter->netdev;
1661         int vec;
1662
1663         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1664         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1665         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1666 }
1667
1668 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1669 {
1670         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1671         free_irq(vec, adapter);
1672 }
1673
1674 static int be_msix_register(struct be_adapter *adapter)
1675 {
1676         int status;
1677
1678         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1679         if (status)
1680                 goto err;
1681
1682         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1683         if (status)
1684                 goto free_tx_irq;
1685
1686         return 0;
1687
1688 free_tx_irq:
1689         be_free_irq(adapter, &adapter->tx_eq);
1690 err:
1691         dev_warn(&adapter->pdev->dev,
1692                 "MSIX Request IRQ failed - err %d\n", status);
1693         pci_disable_msix(adapter->pdev);
1694         adapter->msix_enabled = false;
1695         return status;
1696 }
1697
1698 static int be_irq_register(struct be_adapter *adapter)
1699 {
1700         struct net_device *netdev = adapter->netdev;
1701         int status;
1702
1703         if (adapter->msix_enabled) {
1704                 status = be_msix_register(adapter);
1705                 if (status == 0)
1706                         goto done;
1707                 /* INTx is not supported for VF */
1708                 if (!be_physfn(adapter))
1709                         return status;
1710         }
1711
1712         /* INTx */
1713         netdev->irq = adapter->pdev->irq;
1714         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1715                         adapter);
1716         if (status) {
1717                 dev_err(&adapter->pdev->dev,
1718                         "INTx request IRQ failed - err %d\n", status);
1719                 return status;
1720         }
1721 done:
1722         adapter->isr_registered = true;
1723         return 0;
1724 }
1725
1726 static void be_irq_unregister(struct be_adapter *adapter)
1727 {
1728         struct net_device *netdev = adapter->netdev;
1729
1730         if (!adapter->isr_registered)
1731                 return;
1732
1733         /* INTx */
1734         if (!adapter->msix_enabled) {
1735                 free_irq(netdev->irq, adapter);
1736                 goto done;
1737         }
1738
1739         /* MSIx */
1740         be_free_irq(adapter, &adapter->tx_eq);
1741         be_free_irq(adapter, &adapter->rx_eq);
1742 done:
1743         adapter->isr_registered = false;
1744         return;
1745 }
1746
1747 static int be_open(struct net_device *netdev)
1748 {
1749         struct be_adapter *adapter = netdev_priv(netdev);
1750         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1751         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1752         bool link_up;
1753         int status;
1754         u8 mac_speed;
1755         u16 link_speed;
1756
1757         /* First time posting */
1758         be_post_rx_frags(adapter);
1759
1760         napi_enable(&rx_eq->napi);
1761         napi_enable(&tx_eq->napi);
1762
1763         be_irq_register(adapter);
1764
1765         be_intr_set(adapter, true);
1766
1767         /* The evt queues are created in unarmed state; arm them */
1768         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1769         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1770
1771         /* Rx compl queue may be in unarmed state; rearm it */
1772         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1773
1774         /* Now that interrupts are on we can process async mcc */
1775         be_async_mcc_enable(adapter);
1776
1777         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1778                         &link_speed);
1779         if (status)
1780                 goto ret_sts;
1781         be_link_status_update(adapter, link_up);
1782
1783         if (be_physfn(adapter))
1784                 status = be_vid_config(adapter);
1785         if (status)
1786                 goto ret_sts;
1787
1788         if (be_physfn(adapter)) {
1789                 status = be_cmd_set_flow_control(adapter,
1790                                 adapter->tx_fc, adapter->rx_fc);
1791                 if (status)
1792                         goto ret_sts;
1793         }
1794
1795         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1796 ret_sts:
1797         return status;
1798 }
1799
1800 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1801 {
1802         struct be_dma_mem cmd;
1803         int status = 0;
1804         u8 mac[ETH_ALEN];
1805
1806         memset(mac, 0, ETH_ALEN);
1807
1808         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1809         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1810         if (cmd.va == NULL)
1811                 return -1;
1812         memset(cmd.va, 0, cmd.size);
1813
1814         if (enable) {
1815                 status = pci_write_config_dword(adapter->pdev,
1816                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1817                 if (status) {
1818                         dev_err(&adapter->pdev->dev,
1819                                 "Could not enable Wake-on-lan\n");
1820                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1821                                         cmd.dma);
1822                         return status;
1823                 }
1824                 status = be_cmd_enable_magic_wol(adapter,
1825                                 adapter->netdev->dev_addr, &cmd);
1826                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1827                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1828         } else {
1829                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1830                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1831                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1832         }
1833
1834         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1835         return status;
1836 }
1837
1838 static int be_setup(struct be_adapter *adapter)
1839 {
1840         struct net_device *netdev = adapter->netdev;
1841         u32 cap_flags, en_flags, vf = 0;
1842         int status;
1843         u8 mac[ETH_ALEN];
1844
1845         cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST;
1846
1847         if (be_physfn(adapter)) {
1848                 cap_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS |
1849                                 BE_IF_FLAGS_PROMISCUOUS |
1850                                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1851                 en_flags |= BE_IF_FLAGS_PASS_L3L4_ERRORS;
1852         }
1853
1854         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1855                         netdev->dev_addr, false/* pmac_invalid */,
1856                         &adapter->if_handle, &adapter->pmac_id, 0);
1857         if (status != 0)
1858                 goto do_none;
1859
1860         if (be_physfn(adapter)) {
1861                 while (vf < num_vfs) {
1862                         cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED
1863                                         | BE_IF_FLAGS_BROADCAST;
1864                         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1865                                         mac, true, &adapter->vf_if_handle[vf],
1866                                         NULL, vf+1);
1867                         if (status) {
1868                                 dev_err(&adapter->pdev->dev,
1869                                 "Interface Create failed for VF %d\n", vf);
1870                                 goto if_destroy;
1871                         }
1872                         vf++;
1873                 } while (vf < num_vfs);
1874         } else if (!be_physfn(adapter)) {
1875                 status = be_cmd_mac_addr_query(adapter, mac,
1876                         MAC_ADDRESS_TYPE_NETWORK, false, adapter->if_handle);
1877                 if (!status) {
1878                         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
1879                         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
1880                 }
1881         }
1882
1883         status = be_tx_queues_create(adapter);
1884         if (status != 0)
1885                 goto if_destroy;
1886
1887         status = be_rx_queues_create(adapter);
1888         if (status != 0)
1889                 goto tx_qs_destroy;
1890
1891         status = be_mcc_queues_create(adapter);
1892         if (status != 0)
1893                 goto rx_qs_destroy;
1894
1895         adapter->link_speed = -1;
1896
1897         return 0;
1898
1899 rx_qs_destroy:
1900         be_rx_queues_destroy(adapter);
1901 tx_qs_destroy:
1902         be_tx_queues_destroy(adapter);
1903 if_destroy:
1904         for (vf = 0; vf < num_vfs; vf++)
1905                 if (adapter->vf_if_handle[vf])
1906                         be_cmd_if_destroy(adapter, adapter->vf_if_handle[vf]);
1907         be_cmd_if_destroy(adapter, adapter->if_handle);
1908 do_none:
1909         return status;
1910 }
1911
1912 static int be_clear(struct be_adapter *adapter)
1913 {
1914         be_mcc_queues_destroy(adapter);
1915         be_rx_queues_destroy(adapter);
1916         be_tx_queues_destroy(adapter);
1917
1918         be_cmd_if_destroy(adapter, adapter->if_handle);
1919
1920         /* tell fw we're done with firing cmds */
1921         be_cmd_fw_clean(adapter);
1922         return 0;
1923 }
1924
1925 static int be_close(struct net_device *netdev)
1926 {
1927         struct be_adapter *adapter = netdev_priv(netdev);
1928         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1929         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1930         int vec;
1931
1932         cancel_delayed_work_sync(&adapter->work);
1933
1934         be_async_mcc_disable(adapter);
1935
1936         netif_stop_queue(netdev);
1937         netif_carrier_off(netdev);
1938         adapter->link_up = false;
1939
1940         be_intr_set(adapter, false);
1941
1942         if (adapter->msix_enabled) {
1943                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1944                 synchronize_irq(vec);
1945                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1946                 synchronize_irq(vec);
1947         } else {
1948                 synchronize_irq(netdev->irq);
1949         }
1950         be_irq_unregister(adapter);
1951
1952         napi_disable(&rx_eq->napi);
1953         napi_disable(&tx_eq->napi);
1954
1955         /* Wait for all pending tx completions to arrive so that
1956          * all tx skbs are freed.
1957          */
1958         be_tx_compl_clean(adapter);
1959
1960         return 0;
1961 }
1962
1963 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1964 char flash_cookie[2][16] =      {"*** SE FLAS",
1965                                 "H DIRECTORY *** "};
1966
1967 static bool be_flash_redboot(struct be_adapter *adapter,
1968                         const u8 *p, u32 img_start, int image_size,
1969                         int hdr_size)
1970 {
1971         u32 crc_offset;
1972         u8 flashed_crc[4];
1973         int status;
1974
1975         crc_offset = hdr_size + img_start + image_size - 4;
1976
1977         p += crc_offset;
1978
1979         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1980                         (img_start + image_size - 4));
1981         if (status) {
1982                 dev_err(&adapter->pdev->dev,
1983                 "could not get crc from flash, not flashing redboot\n");
1984                 return false;
1985         }
1986
1987         /*update redboot only if crc does not match*/
1988         if (!memcmp(flashed_crc, p, 4))
1989                 return false;
1990         else
1991                 return true;
1992 }
1993
1994 static int be_flash_data(struct be_adapter *adapter,
1995                         const struct firmware *fw,
1996                         struct be_dma_mem *flash_cmd, int num_of_images)
1997
1998 {
1999         int status = 0, i, filehdr_size = 0;
2000         u32 total_bytes = 0, flash_op;
2001         int num_bytes;
2002         const u8 *p = fw->data;
2003         struct be_cmd_write_flashrom *req = flash_cmd->va;
2004         struct flash_comp *pflashcomp;
2005         int num_comp;
2006
2007         struct flash_comp gen3_flash_types[9] = {
2008                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
2009                         FLASH_IMAGE_MAX_SIZE_g3},
2010                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
2011                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
2012                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
2013                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2014                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
2015                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2016                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
2017                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2018                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
2019                         FLASH_IMAGE_MAX_SIZE_g3},
2020                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
2021                         FLASH_IMAGE_MAX_SIZE_g3},
2022                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
2023                         FLASH_IMAGE_MAX_SIZE_g3},
2024                 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
2025                         FLASH_NCSI_IMAGE_MAX_SIZE_g3}
2026         };
2027         struct flash_comp gen2_flash_types[8] = {
2028                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
2029                         FLASH_IMAGE_MAX_SIZE_g2},
2030                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
2031                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
2032                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
2033                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2034                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
2035                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2036                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
2037                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2038                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
2039                         FLASH_IMAGE_MAX_SIZE_g2},
2040                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
2041                         FLASH_IMAGE_MAX_SIZE_g2},
2042                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
2043                          FLASH_IMAGE_MAX_SIZE_g2}
2044         };
2045
2046         if (adapter->generation == BE_GEN3) {
2047                 pflashcomp = gen3_flash_types;
2048                 filehdr_size = sizeof(struct flash_file_hdr_g3);
2049                 num_comp = 9;
2050         } else {
2051                 pflashcomp = gen2_flash_types;
2052                 filehdr_size = sizeof(struct flash_file_hdr_g2);
2053                 num_comp = 8;
2054         }
2055         for (i = 0; i < num_comp; i++) {
2056                 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
2057                                 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
2058                         continue;
2059                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
2060                         (!be_flash_redboot(adapter, fw->data,
2061                          pflashcomp[i].offset, pflashcomp[i].size,
2062                          filehdr_size)))
2063                         continue;
2064                 p = fw->data;
2065                 p += filehdr_size + pflashcomp[i].offset
2066                         + (num_of_images * sizeof(struct image_hdr));
2067         if (p + pflashcomp[i].size > fw->data + fw->size)
2068                 return -1;
2069         total_bytes = pflashcomp[i].size;
2070                 while (total_bytes) {
2071                         if (total_bytes > 32*1024)
2072                                 num_bytes = 32*1024;
2073                         else
2074                                 num_bytes = total_bytes;
2075                         total_bytes -= num_bytes;
2076
2077                         if (!total_bytes)
2078                                 flash_op = FLASHROM_OPER_FLASH;
2079                         else
2080                                 flash_op = FLASHROM_OPER_SAVE;
2081                         memcpy(req->params.data_buf, p, num_bytes);
2082                         p += num_bytes;
2083                         status = be_cmd_write_flashrom(adapter, flash_cmd,
2084                                 pflashcomp[i].optype, flash_op, num_bytes);
2085                         if (status) {
2086                                 dev_err(&adapter->pdev->dev,
2087                                         "cmd to write to flash rom failed.\n");
2088                                 return -1;
2089                         }
2090                         yield();
2091                 }
2092         }
2093         return 0;
2094 }
2095
2096 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2097 {
2098         if (fhdr == NULL)
2099                 return 0;
2100         if (fhdr->build[0] == '3')
2101                 return BE_GEN3;
2102         else if (fhdr->build[0] == '2')
2103                 return BE_GEN2;
2104         else
2105                 return 0;
2106 }
2107
2108 int be_load_fw(struct be_adapter *adapter, u8 *func)
2109 {
2110         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2111         const struct firmware *fw;
2112         struct flash_file_hdr_g2 *fhdr;
2113         struct flash_file_hdr_g3 *fhdr3;
2114         struct image_hdr *img_hdr_ptr = NULL;
2115         struct be_dma_mem flash_cmd;
2116         int status, i = 0;
2117         const u8 *p;
2118
2119         strcpy(fw_file, func);
2120
2121         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2122         if (status)
2123                 goto fw_exit;
2124
2125         p = fw->data;
2126         fhdr = (struct flash_file_hdr_g2 *) p;
2127         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2128
2129         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2130         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2131                                         &flash_cmd.dma);
2132         if (!flash_cmd.va) {
2133                 status = -ENOMEM;
2134                 dev_err(&adapter->pdev->dev,
2135                         "Memory allocation failure while flashing\n");
2136                 goto fw_exit;
2137         }
2138
2139         if ((adapter->generation == BE_GEN3) &&
2140                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2141                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2142                 for (i = 0; i < fhdr3->num_imgs; i++) {
2143                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2144                                         (sizeof(struct flash_file_hdr_g3) +
2145                                         i * sizeof(struct image_hdr)));
2146                         if (img_hdr_ptr->imageid == 1) {
2147                                 status = be_flash_data(adapter, fw,
2148                                                 &flash_cmd, fhdr3->num_imgs);
2149                         }
2150
2151                 }
2152         } else if ((adapter->generation == BE_GEN2) &&
2153                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2154                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2155         } else {
2156                 dev_err(&adapter->pdev->dev,
2157                         "UFI and Interface are not compatible for flashing\n");
2158                 status = -1;
2159         }
2160
2161         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2162                                 flash_cmd.dma);
2163         if (status) {
2164                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2165                 goto fw_exit;
2166         }
2167
2168         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2169
2170 fw_exit:
2171         release_firmware(fw);
2172         return status;
2173 }
2174
2175 static struct net_device_ops be_netdev_ops = {
2176         .ndo_open               = be_open,
2177         .ndo_stop               = be_close,
2178         .ndo_start_xmit         = be_xmit,
2179         .ndo_get_stats          = be_get_stats,
2180         .ndo_set_rx_mode        = be_set_multicast_list,
2181         .ndo_set_mac_address    = be_mac_addr_set,
2182         .ndo_change_mtu         = be_change_mtu,
2183         .ndo_validate_addr      = eth_validate_addr,
2184         .ndo_vlan_rx_register   = be_vlan_register,
2185         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2186         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2187         .ndo_set_vf_mac         = be_set_vf_mac
2188 };
2189
2190 static void be_netdev_init(struct net_device *netdev)
2191 {
2192         struct be_adapter *adapter = netdev_priv(netdev);
2193
2194         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2195                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2196                 NETIF_F_GRO;
2197
2198         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2199
2200         netdev->flags |= IFF_MULTICAST;
2201
2202         adapter->rx_csum = true;
2203
2204         /* Default settings for Rx and Tx flow control */
2205         adapter->rx_fc = true;
2206         adapter->tx_fc = true;
2207
2208         netif_set_gso_max_size(netdev, 65535);
2209
2210         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2211
2212         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2213
2214         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2215                 BE_NAPI_WEIGHT);
2216         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2217                 BE_NAPI_WEIGHT);
2218
2219         netif_carrier_off(netdev);
2220         netif_stop_queue(netdev);
2221 }
2222
2223 static void be_unmap_pci_bars(struct be_adapter *adapter)
2224 {
2225         if (adapter->csr)
2226                 iounmap(adapter->csr);
2227         if (adapter->db)
2228                 iounmap(adapter->db);
2229         if (adapter->pcicfg && be_physfn(adapter))
2230                 iounmap(adapter->pcicfg);
2231 }
2232
2233 static int be_map_pci_bars(struct be_adapter *adapter)
2234 {
2235         u8 __iomem *addr;
2236         int pcicfg_reg, db_reg;
2237
2238         if (be_physfn(adapter)) {
2239                 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2240                                 pci_resource_len(adapter->pdev, 2));
2241                 if (addr == NULL)
2242                         return -ENOMEM;
2243                 adapter->csr = addr;
2244         }
2245
2246         if (adapter->generation == BE_GEN2) {
2247                 pcicfg_reg = 1;
2248                 db_reg = 4;
2249         } else {
2250                 pcicfg_reg = 0;
2251                 if (be_physfn(adapter))
2252                         db_reg = 4;
2253                 else
2254                         db_reg = 0;
2255         }
2256         addr = ioremap_nocache(pci_resource_start(adapter->pdev, db_reg),
2257                                 pci_resource_len(adapter->pdev, db_reg));
2258         if (addr == NULL)
2259                 goto pci_map_err;
2260         adapter->db = addr;
2261
2262         if (be_physfn(adapter)) {
2263                 addr = ioremap_nocache(
2264                                 pci_resource_start(adapter->pdev, pcicfg_reg),
2265                                 pci_resource_len(adapter->pdev, pcicfg_reg));
2266                 if (addr == NULL)
2267                         goto pci_map_err;
2268                 adapter->pcicfg = addr;
2269         } else
2270                 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
2271
2272         return 0;
2273 pci_map_err:
2274         be_unmap_pci_bars(adapter);
2275         return -ENOMEM;
2276 }
2277
2278
2279 static void be_ctrl_cleanup(struct be_adapter *adapter)
2280 {
2281         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2282
2283         be_unmap_pci_bars(adapter);
2284
2285         if (mem->va)
2286                 pci_free_consistent(adapter->pdev, mem->size,
2287                         mem->va, mem->dma);
2288
2289         mem = &adapter->mc_cmd_mem;
2290         if (mem->va)
2291                 pci_free_consistent(adapter->pdev, mem->size,
2292                         mem->va, mem->dma);
2293 }
2294
2295 static int be_ctrl_init(struct be_adapter *adapter)
2296 {
2297         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2298         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2299         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2300         int status;
2301
2302         status = be_map_pci_bars(adapter);
2303         if (status)
2304                 goto done;
2305
2306         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2307         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2308                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2309         if (!mbox_mem_alloc->va) {
2310                 status = -ENOMEM;
2311                 goto unmap_pci_bars;
2312         }
2313
2314         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2315         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2316         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2317         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2318
2319         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2320         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2321                         &mc_cmd_mem->dma);
2322         if (mc_cmd_mem->va == NULL) {
2323                 status = -ENOMEM;
2324                 goto free_mbox;
2325         }
2326         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2327
2328         spin_lock_init(&adapter->mbox_lock);
2329         spin_lock_init(&adapter->mcc_lock);
2330         spin_lock_init(&adapter->mcc_cq_lock);
2331
2332         pci_save_state(adapter->pdev);
2333         return 0;
2334
2335 free_mbox:
2336         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2337                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2338
2339 unmap_pci_bars:
2340         be_unmap_pci_bars(adapter);
2341
2342 done:
2343         return status;
2344 }
2345
2346 static void be_stats_cleanup(struct be_adapter *adapter)
2347 {
2348         struct be_stats_obj *stats = &adapter->stats;
2349         struct be_dma_mem *cmd = &stats->cmd;
2350
2351         if (cmd->va)
2352                 pci_free_consistent(adapter->pdev, cmd->size,
2353                         cmd->va, cmd->dma);
2354 }
2355
2356 static int be_stats_init(struct be_adapter *adapter)
2357 {
2358         struct be_stats_obj *stats = &adapter->stats;
2359         struct be_dma_mem *cmd = &stats->cmd;
2360
2361         cmd->size = sizeof(struct be_cmd_req_get_stats);
2362         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2363         if (cmd->va == NULL)
2364                 return -1;
2365         memset(cmd->va, 0, cmd->size);
2366         return 0;
2367 }
2368
2369 static void __devexit be_remove(struct pci_dev *pdev)
2370 {
2371         struct be_adapter *adapter = pci_get_drvdata(pdev);
2372
2373         if (!adapter)
2374                 return;
2375
2376         unregister_netdev(adapter->netdev);
2377
2378         be_clear(adapter);
2379
2380         be_stats_cleanup(adapter);
2381
2382         be_ctrl_cleanup(adapter);
2383
2384         be_sriov_disable(adapter);
2385
2386         be_msix_disable(adapter);
2387
2388         pci_set_drvdata(pdev, NULL);
2389         pci_release_regions(pdev);
2390         pci_disable_device(pdev);
2391
2392         free_netdev(adapter->netdev);
2393 }
2394
2395 static int be_get_config(struct be_adapter *adapter)
2396 {
2397         int status;
2398         u8 mac[ETH_ALEN];
2399
2400         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2401         if (status)
2402                 return status;
2403
2404         status = be_cmd_query_fw_cfg(adapter,
2405                                 &adapter->port_num, &adapter->cap);
2406         if (status)
2407                 return status;
2408
2409         memset(mac, 0, ETH_ALEN);
2410
2411         if (be_physfn(adapter)) {
2412                 status = be_cmd_mac_addr_query(adapter, mac,
2413                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2414
2415                 if (status)
2416                         return status;
2417
2418                 if (!is_valid_ether_addr(mac))
2419                         return -EADDRNOTAVAIL;
2420
2421                 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2422                 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2423         }
2424
2425         if (adapter->cap & 0x400)
2426                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2427         else
2428                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2429
2430         return 0;
2431 }
2432
2433 static int __devinit be_probe(struct pci_dev *pdev,
2434                         const struct pci_device_id *pdev_id)
2435 {
2436         int status = 0;
2437         struct be_adapter *adapter;
2438         struct net_device *netdev;
2439
2440
2441         status = pci_enable_device(pdev);
2442         if (status)
2443                 goto do_none;
2444
2445         status = pci_request_regions(pdev, DRV_NAME);
2446         if (status)
2447                 goto disable_dev;
2448         pci_set_master(pdev);
2449
2450         netdev = alloc_etherdev(sizeof(struct be_adapter));
2451         if (netdev == NULL) {
2452                 status = -ENOMEM;
2453                 goto rel_reg;
2454         }
2455         adapter = netdev_priv(netdev);
2456
2457         switch (pdev->device) {
2458         case BE_DEVICE_ID1:
2459         case OC_DEVICE_ID1:
2460                 adapter->generation = BE_GEN2;
2461                 break;
2462         case BE_DEVICE_ID2:
2463         case OC_DEVICE_ID2:
2464                 adapter->generation = BE_GEN3;
2465                 break;
2466         default:
2467                 adapter->generation = 0;
2468         }
2469
2470         adapter->pdev = pdev;
2471         pci_set_drvdata(pdev, adapter);
2472         adapter->netdev = netdev;
2473         be_netdev_init(netdev);
2474         SET_NETDEV_DEV(netdev, &pdev->dev);
2475
2476         be_msix_enable(adapter);
2477
2478         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2479         if (!status) {
2480                 netdev->features |= NETIF_F_HIGHDMA;
2481         } else {
2482                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2483                 if (status) {
2484                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2485                         goto free_netdev;
2486                 }
2487         }
2488
2489         be_sriov_enable(adapter);
2490
2491         status = be_ctrl_init(adapter);
2492         if (status)
2493                 goto free_netdev;
2494
2495         /* sync up with fw's ready state */
2496         if (be_physfn(adapter)) {
2497                 status = be_cmd_POST(adapter);
2498                 if (status)
2499                         goto ctrl_clean;
2500
2501                 status = be_cmd_reset_function(adapter);
2502                 if (status)
2503                         goto ctrl_clean;
2504         }
2505
2506         /* tell fw we're ready to fire cmds */
2507         status = be_cmd_fw_init(adapter);
2508         if (status)
2509                 goto ctrl_clean;
2510
2511         status = be_stats_init(adapter);
2512         if (status)
2513                 goto ctrl_clean;
2514
2515         status = be_get_config(adapter);
2516         if (status)
2517                 goto stats_clean;
2518
2519         INIT_DELAYED_WORK(&adapter->work, be_worker);
2520
2521         status = be_setup(adapter);
2522         if (status)
2523                 goto stats_clean;
2524
2525         status = register_netdev(netdev);
2526         if (status != 0)
2527                 goto unsetup;
2528
2529         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2530         return 0;
2531
2532 unsetup:
2533         be_clear(adapter);
2534 stats_clean:
2535         be_stats_cleanup(adapter);
2536 ctrl_clean:
2537         be_ctrl_cleanup(adapter);
2538 free_netdev:
2539         be_msix_disable(adapter);
2540         be_sriov_disable(adapter);
2541         free_netdev(adapter->netdev);
2542         pci_set_drvdata(pdev, NULL);
2543 rel_reg:
2544         pci_release_regions(pdev);
2545 disable_dev:
2546         pci_disable_device(pdev);
2547 do_none:
2548         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2549         return status;
2550 }
2551
2552 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2553 {
2554         struct be_adapter *adapter = pci_get_drvdata(pdev);
2555         struct net_device *netdev =  adapter->netdev;
2556
2557         if (adapter->wol)
2558                 be_setup_wol(adapter, true);
2559
2560         netif_device_detach(netdev);
2561         if (netif_running(netdev)) {
2562                 rtnl_lock();
2563                 be_close(netdev);
2564                 rtnl_unlock();
2565         }
2566         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2567         be_clear(adapter);
2568
2569         pci_save_state(pdev);
2570         pci_disable_device(pdev);
2571         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2572         return 0;
2573 }
2574
2575 static int be_resume(struct pci_dev *pdev)
2576 {
2577         int status = 0;
2578         struct be_adapter *adapter = pci_get_drvdata(pdev);
2579         struct net_device *netdev =  adapter->netdev;
2580
2581         netif_device_detach(netdev);
2582
2583         status = pci_enable_device(pdev);
2584         if (status)
2585                 return status;
2586
2587         pci_set_power_state(pdev, 0);
2588         pci_restore_state(pdev);
2589
2590         /* tell fw we're ready to fire cmds */
2591         status = be_cmd_fw_init(adapter);
2592         if (status)
2593                 return status;
2594
2595         be_setup(adapter);
2596         if (netif_running(netdev)) {
2597                 rtnl_lock();
2598                 be_open(netdev);
2599                 rtnl_unlock();
2600         }
2601         netif_device_attach(netdev);
2602
2603         if (adapter->wol)
2604                 be_setup_wol(adapter, false);
2605         return 0;
2606 }
2607
2608 /*
2609  * An FLR will stop BE from DMAing any data.
2610  */
2611 static void be_shutdown(struct pci_dev *pdev)
2612 {
2613         struct be_adapter *adapter = pci_get_drvdata(pdev);
2614         struct net_device *netdev =  adapter->netdev;
2615
2616         netif_device_detach(netdev);
2617
2618         be_cmd_reset_function(adapter);
2619
2620         if (adapter->wol)
2621                 be_setup_wol(adapter, true);
2622
2623         pci_disable_device(pdev);
2624
2625         return;
2626 }
2627
2628 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2629                                 pci_channel_state_t state)
2630 {
2631         struct be_adapter *adapter = pci_get_drvdata(pdev);
2632         struct net_device *netdev =  adapter->netdev;
2633
2634         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2635
2636         adapter->eeh_err = true;
2637
2638         netif_device_detach(netdev);
2639
2640         if (netif_running(netdev)) {
2641                 rtnl_lock();
2642                 be_close(netdev);
2643                 rtnl_unlock();
2644         }
2645         be_clear(adapter);
2646
2647         if (state == pci_channel_io_perm_failure)
2648                 return PCI_ERS_RESULT_DISCONNECT;
2649
2650         pci_disable_device(pdev);
2651
2652         return PCI_ERS_RESULT_NEED_RESET;
2653 }
2654
2655 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2656 {
2657         struct be_adapter *adapter = pci_get_drvdata(pdev);
2658         int status;
2659
2660         dev_info(&adapter->pdev->dev, "EEH reset\n");
2661         adapter->eeh_err = false;
2662
2663         status = pci_enable_device(pdev);
2664         if (status)
2665                 return PCI_ERS_RESULT_DISCONNECT;
2666
2667         pci_set_master(pdev);
2668         pci_set_power_state(pdev, 0);
2669         pci_restore_state(pdev);
2670
2671         /* Check if card is ok and fw is ready */
2672         status = be_cmd_POST(adapter);
2673         if (status)
2674                 return PCI_ERS_RESULT_DISCONNECT;
2675
2676         return PCI_ERS_RESULT_RECOVERED;
2677 }
2678
2679 static void be_eeh_resume(struct pci_dev *pdev)
2680 {
2681         int status = 0;
2682         struct be_adapter *adapter = pci_get_drvdata(pdev);
2683         struct net_device *netdev =  adapter->netdev;
2684
2685         dev_info(&adapter->pdev->dev, "EEH resume\n");
2686
2687         pci_save_state(pdev);
2688
2689         /* tell fw we're ready to fire cmds */
2690         status = be_cmd_fw_init(adapter);
2691         if (status)
2692                 goto err;
2693
2694         status = be_setup(adapter);
2695         if (status)
2696                 goto err;
2697
2698         if (netif_running(netdev)) {
2699                 status = be_open(netdev);
2700                 if (status)
2701                         goto err;
2702         }
2703         netif_device_attach(netdev);
2704         return;
2705 err:
2706         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2707         return;
2708 }
2709
2710 static struct pci_error_handlers be_eeh_handlers = {
2711         .error_detected = be_eeh_err_detected,
2712         .slot_reset = be_eeh_reset,
2713         .resume = be_eeh_resume,
2714 };
2715
2716 static struct pci_driver be_driver = {
2717         .name = DRV_NAME,
2718         .id_table = be_dev_ids,
2719         .probe = be_probe,
2720         .remove = be_remove,
2721         .suspend = be_suspend,
2722         .resume = be_resume,
2723         .shutdown = be_shutdown,
2724         .err_handler = &be_eeh_handlers
2725 };
2726
2727 static int __init be_init_module(void)
2728 {
2729         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2730             rx_frag_size != 2048) {
2731                 printk(KERN_WARNING DRV_NAME
2732                         " : Module param rx_frag_size must be 2048/4096/8192."
2733                         " Using 2048\n");
2734                 rx_frag_size = 2048;
2735         }
2736
2737         if (num_vfs > 32) {
2738                 printk(KERN_WARNING DRV_NAME
2739                         " : Module param num_vfs must not be greater than 32."
2740                         "Using 32\n");
2741                 num_vfs = 32;
2742         }
2743
2744         return pci_register_driver(&be_driver);
2745 }
2746 module_init(be_init_module);
2747
2748 static void __exit be_exit_module(void)
2749 {
2750         pci_unregister_driver(&be_driver);
2751 }
2752 module_exit(be_exit_module);