drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2010 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  37         { 0 }
  38 };
  39 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  40
  41 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  42 {
  43         struct be_dma_mem *mem = &q->dma_mem;
  44         if (mem->va)
  45                 pci_free_consistent(adapter->pdev, mem->size,
  46                         mem->va, mem->dma);
  47 }
  48
  49 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  50                 u16 len, u16 entry_size)
  51 {
  52         struct be_dma_mem *mem = &q->dma_mem;
  53
  54         memset(q, 0, sizeof(*q));
  55         q->len = len;
  56         q->entry_size = entry_size;
  57         mem->size = len * entry_size;
  58         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  59         if (!mem->va)
  60                 return -1;
  61         memset(mem->va, 0, mem->size);
  62         return 0;
  63 }
  64
  65 static void be_intr_set(struct be_adapter *adapter, bool enable)
  66 {
  67         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  68         u32 reg = ioread32(addr);
  69         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  70
  71         if (adapter->eeh_err)
  72                 return;
  73
  74         if (!enabled && enable)
  75                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  76         else if (enabled && !enable)
  77                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  78         else
  79                 return;
  80
  81         iowrite32(reg, addr);
  82 }
  83
  84 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  85 {
  86         u32 val = 0;
  87         val |= qid & DB_RQ_RING_ID_MASK;
  88         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  89         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  90 }
  91
  92 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  93 {
  94         u32 val = 0;
  95         val |= qid & DB_TXULP_RING_ID_MASK;
  96         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  97         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  98 }
  99
 100 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
 101                 bool arm, bool clear_int, u16 num_popped)
 102 {
 103         u32 val = 0;
 104         val |= qid & DB_EQ_RING_ID_MASK;
 105
 106         if (adapter->eeh_err)
 107                 return;
 108
 109         if (arm)
 110                 val |= 1 << DB_EQ_REARM_SHIFT;
 111         if (clear_int)
 112                 val |= 1 << DB_EQ_CLR_SHIFT;
 113         val |= 1 << DB_EQ_EVNT_SHIFT;
 114         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 115         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 116 }
 117
 118 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 119 {
 120         u32 val = 0;
 121         val |= qid & DB_CQ_RING_ID_MASK;
 122
 123         if (adapter->eeh_err)
 124                 return;
 125
 126         if (arm)
 127                 val |= 1 << DB_CQ_REARM_SHIFT;
 128         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 129         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 130 }
 131
 132 static int be_mac_addr_set(struct net_device *netdev, void *p)
 133 {
 134         struct be_adapter *adapter = netdev_priv(netdev);
 135         struct sockaddr *addr = p;
 136         int status = 0;
 137
 138         if (!is_valid_ether_addr(addr->sa_data))
 139                 return -EADDRNOTAVAIL;
 140
 141         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 142         if (status)
 143                 return status;
 144
 145         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 146                         adapter->if_handle, &adapter->pmac_id);
 147         if (!status)
 148                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 149
 150         return status;
 151 }
 152
 153 void netdev_stats_update(struct be_adapter *adapter)
 154 {
 155         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 156         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 157         struct be_port_rxf_stats *port_stats =
 158                         &rxf_stats->port[adapter->port_num];
 159         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 160         struct be_erx_stats *erx_stats = &hw_stats->erx;
 161
 162         dev_stats->rx_packets = drvr_stats(adapter)->be_rx_pkts;
 163         dev_stats->tx_packets = drvr_stats(adapter)->be_tx_pkts;
 164         dev_stats->rx_bytes = drvr_stats(adapter)->be_rx_bytes;
 165         dev_stats->tx_bytes = drvr_stats(adapter)->be_tx_bytes;
 166
 167         /* bad pkts received */
 168         dev_stats->rx_errors = port_stats->rx_crc_errors +
 169                 port_stats->rx_alignment_symbol_errors +
 170                 port_stats->rx_in_range_errors +
 171                 port_stats->rx_out_range_errors +
 172                 port_stats->rx_frame_too_long +
 173                 port_stats->rx_dropped_too_small +
 174                 port_stats->rx_dropped_too_short +
 175                 port_stats->rx_dropped_header_too_small +
 176                 port_stats->rx_dropped_tcp_length +
 177                 port_stats->rx_dropped_runt +
 178                 port_stats->rx_tcp_checksum_errs +
 179                 port_stats->rx_ip_checksum_errs +
 180                 port_stats->rx_udp_checksum_errs;
 181
 182         /*  no space in linux buffers: best possible approximation */
 183         dev_stats->rx_dropped =
 184                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 185
 186         /* detailed rx errors */
 187         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 188                 port_stats->rx_out_range_errors +
 189                 port_stats->rx_frame_too_long;
 190
 191         /* receive ring buffer overflow */
 192         dev_stats->rx_over_errors = 0;
 193
 194         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 195
 196         /* frame alignment errors */
 197         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 198
 199         /* receiver fifo overrun */
 200         /* drops_no_pbuf is no per i/f, it's per BE card */
 201         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 202                                         port_stats->rx_input_fifo_overflow +
 203                                         rxf_stats->rx_drops_no_pbuf;
 204         /* receiver missed packetd */
 205         dev_stats->rx_missed_errors = 0;
 206
 207         /*  packet transmit problems */
 208         dev_stats->tx_errors = 0;
 209
 210         /* no space available in linux */
 211         dev_stats->tx_dropped = 0;
 212
 213         dev_stats->multicast = port_stats->rx_multicast_frames;
 214         dev_stats->collisions = 0;
 215
 216         /* detailed tx_errors */
 217         dev_stats->tx_aborted_errors = 0;
 218         dev_stats->tx_carrier_errors = 0;
 219         dev_stats->tx_fifo_errors = 0;
 220         dev_stats->tx_heartbeat_errors = 0;
 221         dev_stats->tx_window_errors = 0;
 222 }
 223
 224 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 225 {
 226         struct net_device *netdev = adapter->netdev;
 227
 228         /* If link came up or went down */
 229         if (adapter->link_up != link_up) {
 230                 adapter->link_speed = -1;
 231                 if (link_up) {
 232                         netif_start_queue(netdev);
 233                         netif_carrier_on(netdev);
 234                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 235                 } else {
 236                         netif_stop_queue(netdev);
 237                         netif_carrier_off(netdev);
 238                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 239                 }
 240                 adapter->link_up = link_up;
 241         }
 242 }
 243
 244 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 245 static void be_rx_eqd_update(struct be_adapter *adapter)
 246 {
 247         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 248         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 249         ulong now = jiffies;
 250         u32 eqd;
 251
 252         if (!rx_eq->enable_aic)
 253                 return;
 254
 255         /* Wrapped around */
 256         if (time_before(now, stats->rx_fps_jiffies)) {
 257                 stats->rx_fps_jiffies = now;
 258                 return;
 259         }
 260
 261         /* Update once a second */
 262         if ((now - stats->rx_fps_jiffies) < HZ)
 263                 return;
 264
 265         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 266                         ((now - stats->rx_fps_jiffies) / HZ);
 267
 268         stats->rx_fps_jiffies = now;
 269         stats->be_prev_rx_frags = stats->be_rx_frags;
 270         eqd = stats->be_rx_fps / 110000;
 271         eqd = eqd << 3;
 272         if (eqd > rx_eq->max_eqd)
 273                 eqd = rx_eq->max_eqd;
 274         if (eqd < rx_eq->min_eqd)
 275                 eqd = rx_eq->min_eqd;
 276         if (eqd < 10)
 277                 eqd = 0;
 278         if (eqd != rx_eq->cur_eqd)
 279                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 280
 281         rx_eq->cur_eqd = eqd;
 282 }
 283
 284 static struct net_device_stats *be_get_stats(struct net_device *dev)
 285 {
 286         return &dev->stats;
 287 }
 288
 289 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 290 {
 291         u64 rate = bytes;
 292
 293         do_div(rate, ticks / HZ);
 294         rate <<= 3;                     /* bytes/sec -> bits/sec */
 295         do_div(rate, 1000000ul);        /* MB/Sec */
 296
 297         return rate;
 298 }
 299
 300 static void be_tx_rate_update(struct be_adapter *adapter)
 301 {
 302         struct be_drvr_stats *stats = drvr_stats(adapter);
 303         ulong now = jiffies;
 304
 305         /* Wrapped around? */
 306         if (time_before(now, stats->be_tx_jiffies)) {
 307                 stats->be_tx_jiffies = now;
 308                 return;
 309         }
 310
 311         /* Update tx rate once in two seconds */
 312         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 313                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 314                                                   - stats->be_tx_bytes_prev,
 315                                                  now - stats->be_tx_jiffies);
 316                 stats->be_tx_jiffies = now;
 317                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 318         }
 319 }
 320
 321 static void be_tx_stats_update(struct be_adapter *adapter,
 322                         u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
 323 {
 324         struct be_drvr_stats *stats = drvr_stats(adapter);
 325         stats->be_tx_reqs++;
 326         stats->be_tx_wrbs += wrb_cnt;
 327         stats->be_tx_bytes += copied;
 328         stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
 329         if (stopped)
 330                 stats->be_tx_stops++;
 331 }
 332
 333 /* Determine number of WRB entries needed to xmit data in an skb */
 334 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 335 {
 336         int cnt = (skb->len > skb->data_len);
 337
 338         cnt += skb_shinfo(skb)->nr_frags;
 339
 340         /* to account for hdr wrb */
 341         cnt++;
 342         if (cnt & 1) {
 343                 /* add a dummy to make it an even num */
 344                 cnt++;
 345                 *dummy = true;
 346         } else
 347                 *dummy = false;
 348         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 349         return cnt;
 350 }
 351
 352 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 353 {
 354         wrb->frag_pa_hi = upper_32_bits(addr);
 355         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 356         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 357 }
 358
 359 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 360                 bool vlan, u32 wrb_cnt, u32 len)
 361 {
 362         memset(hdr, 0, sizeof(*hdr));
 363
 364         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 365
 366         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 367                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 368                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 369                         hdr, skb_shinfo(skb)->gso_size);
 370         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 371                 if (is_tcp_pkt(skb))
 372                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 373                 else if (is_udp_pkt(skb))
 374                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 375         }
 376
 377         if (vlan && vlan_tx_tag_present(skb)) {
 378                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 379                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 380                         hdr, vlan_tx_tag_get(skb));
 381         }
 382
 383         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 384         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 385         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 386         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 387 }
 388
 389 static void unmap_tx_frag(struct pci_dev *pdev, struct be_eth_wrb *wrb,
 390                 bool unmap_single)
 391 {
 392         dma_addr_t dma;
 393
 394         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 395
 396         dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
 397         if (dma != 0) {
 398                 if (unmap_single)
 399                         pci_unmap_single(pdev, dma, wrb->frag_len,
 400                                 PCI_DMA_TODEVICE);
 401                 else
 402                         pci_unmap_page(pdev, dma, wrb->frag_len,
 403                                 PCI_DMA_TODEVICE);
 404         }
 405 }
 406
 407 static int make_tx_wrbs(struct be_adapter *adapter,
 408                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 409 {
 410         dma_addr_t busaddr;
 411         int i, copied = 0;
 412         struct pci_dev *pdev = adapter->pdev;
 413         struct sk_buff *first_skb = skb;
 414         struct be_queue_info *txq = &adapter->tx_obj.q;
 415         struct be_eth_wrb *wrb;
 416         struct be_eth_hdr_wrb *hdr;
 417         bool map_single = false;
 418         u16 map_head;
 419
 420         hdr = queue_head_node(txq);
 421         queue_head_inc(txq);
 422         map_head = txq->head;
 423
 424         if (skb->len > skb->data_len) {
 425                 int len = skb->len - skb->data_len;
 426                 busaddr = pci_map_single(pdev, skb->data, len,
 427                                          PCI_DMA_TODEVICE);
 428                 if (pci_dma_mapping_error(pdev, busaddr))
 429                         goto dma_err;
 430                 map_single = true;
 431                 wrb = queue_head_node(txq);
 432                 wrb_fill(wrb, busaddr, len);
 433                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 434                 queue_head_inc(txq);
 435                 copied += len;
 436         }
 437
 438         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 439                 struct skb_frag_struct *frag =
 440                         &skb_shinfo(skb)->frags[i];
 441                 busaddr = pci_map_page(pdev, frag->page,
 442                                        frag->page_offset,
 443                                        frag->size, PCI_DMA_TODEVICE);
 444                 if (pci_dma_mapping_error(pdev, busaddr))
 445                         goto dma_err;
 446                 wrb = queue_head_node(txq);
 447                 wrb_fill(wrb, busaddr, frag->size);
 448                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 449                 queue_head_inc(txq);
 450                 copied += frag->size;
 451         }
 452
 453         if (dummy_wrb) {
 454                 wrb = queue_head_node(txq);
 455                 wrb_fill(wrb, 0, 0);
 456                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 457                 queue_head_inc(txq);
 458         }
 459
 460         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 461                 wrb_cnt, copied);
 462         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 463
 464         return copied;
 465 dma_err:
 466         txq->head = map_head;
 467         while (copied) {
 468                 wrb = queue_head_node(txq);
 469                 unmap_tx_frag(pdev, wrb, map_single);
 470                 map_single = false;
 471                 copied -= wrb->frag_len;
 472                 queue_head_inc(txq);
 473         }
 474         return 0;
 475 }
 476
 477 static netdev_tx_t be_xmit(struct sk_buff *skb,
 478                         struct net_device *netdev)
 479 {
 480         struct be_adapter *adapter = netdev_priv(netdev);
 481         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 482         struct be_queue_info *txq = &tx_obj->q;
 483         u32 wrb_cnt = 0, copied = 0;
 484         u32 start = txq->head;
 485         bool dummy_wrb, stopped = false;
 486
 487         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 488
 489         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 490         if (copied) {
 491                 /* record the sent skb in the sent_skb table */
 492                 BUG_ON(tx_obj->sent_skb_list[start]);
 493                 tx_obj->sent_skb_list[start] = skb;
 494
 495                 /* Ensure txq has space for the next skb; Else stop the queue
 496                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 497                  * tx compls of the current transmit which'll wake up the queue
 498                  */
 499                 atomic_add(wrb_cnt, &txq->used);
 500                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 501                                                                 txq->len) {
 502                         netif_stop_queue(netdev);
 503                         stopped = true;
 504                 }
 505
 506                 be_txq_notify(adapter, txq->id, wrb_cnt);
 507
 508                 be_tx_stats_update(adapter, wrb_cnt, copied,
 509                                 skb_shinfo(skb)->gso_segs, stopped);
 510         } else {
 511                 txq->head = start;
 512                 dev_kfree_skb_any(skb);
 513         }
 514         return NETDEV_TX_OK;
 515 }
 516
 517 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 518 {
 519         struct be_adapter *adapter = netdev_priv(netdev);
 520         if (new_mtu < BE_MIN_MTU ||
 521                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 522                                         (ETH_HLEN + ETH_FCS_LEN))) {
 523                 dev_info(&adapter->pdev->dev,
 524                         "MTU must be between %d and %d bytes\n",
 525                         BE_MIN_MTU,
 526                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 527                 return -EINVAL;
 528         }
 529         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 530                         netdev->mtu, new_mtu);
 531         netdev->mtu = new_mtu;
 532         return 0;
 533 }
 534
 535 /*
 536  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 537  * If the user configures more, place BE in vlan promiscuous mode.
 538  */
 539 static int be_vid_config(struct be_adapter *adapter)
 540 {
 541         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 542         u16 ntags = 0, i;
 543         int status = 0;
 544
 545         if (adapter->vlans_added <= adapter->max_vlans)  {
 546                 /* Construct VLAN Table to give to HW */
 547                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 548                         if (adapter->vlan_tag[i]) {
 549                                 vtag[ntags] = cpu_to_le16(i);
 550                                 ntags++;
 551                         }
 552                 }
 553                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 554                                         vtag, ntags, 1, 0);
 555         } else {
 556                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 557                                         NULL, 0, 1, 1);
 558         }
 559         return status;
 560 }
 561
 562 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 563 {
 564         struct be_adapter *adapter = netdev_priv(netdev);
 565         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 566         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 567
 568         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 569         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 570         adapter->vlan_grp = grp;
 571         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 572         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 573 }
 574
 575 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 576 {
 577         struct be_adapter *adapter = netdev_priv(netdev);
 578
 579         adapter->vlan_tag[vid] = 1;
 580         adapter->vlans_added++;
 581         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 582                 be_vid_config(adapter);
 583 }
 584
 585 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 586 {
 587         struct be_adapter *adapter = netdev_priv(netdev);
 588
 589         adapter->vlan_tag[vid] = 0;
 590         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 591         adapter->vlans_added--;
 592         if (adapter->vlans_added <= adapter->max_vlans)
 593                 be_vid_config(adapter);
 594 }
 595
 596 static void be_set_multicast_list(struct net_device *netdev)
 597 {
 598         struct be_adapter *adapter = netdev_priv(netdev);
 599
 600         if (netdev->flags & IFF_PROMISC) {
 601                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 602                 adapter->promiscuous = true;
 603                 goto done;
 604         }
 605
 606         /* BE was previously in promiscous mode; disable it */
 607         if (adapter->promiscuous) {
 608                 adapter->promiscuous = false;
 609                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 610         }
 611
 612         /* Enable multicast promisc if num configured exceeds what we support */
 613         if (netdev->flags & IFF_ALLMULTI ||
 614             netdev_mc_count(netdev) > BE_MAX_MC) {
 615                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
 616                                 &adapter->mc_cmd_mem);
 617                 goto done;
 618         }
 619
 620         be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
 621                 &adapter->mc_cmd_mem);
 622 done:
 623         return;
 624 }
 625
 626 static void be_rx_rate_update(struct be_adapter *adapter)
 627 {
 628         struct be_drvr_stats *stats = drvr_stats(adapter);
 629         ulong now = jiffies;
 630
 631         /* Wrapped around */
 632         if (time_before(now, stats->be_rx_jiffies)) {
 633                 stats->be_rx_jiffies = now;
 634                 return;
 635         }
 636
 637         /* Update the rate once in two seconds */
 638         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 639                 return;
 640
 641         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 642                                           - stats->be_rx_bytes_prev,
 643                                          now - stats->be_rx_jiffies);
 644         stats->be_rx_jiffies = now;
 645         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 646 }
 647
 648 static void be_rx_stats_update(struct be_adapter *adapter,
 649                 u32 pktsize, u16 numfrags)
 650 {
 651         struct be_drvr_stats *stats = drvr_stats(adapter);
 652
 653         stats->be_rx_compl++;
 654         stats->be_rx_frags += numfrags;
 655         stats->be_rx_bytes += pktsize;
 656         stats->be_rx_pkts++;
 657 }
 658
 659 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 660 {
 661         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 662
 663         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 664         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 665         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 666         if (ip_version) {
 667                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 668                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 669         }
 670         ipv6_chk = (ip_version && (tcpf || udpf));
 671
 672         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 673 }
 674
 675 static struct be_rx_page_info *
 676 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 677 {
 678         struct be_rx_page_info *rx_page_info;
 679         struct be_queue_info *rxq = &adapter->rx_obj.q;
 680
 681         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 682         BUG_ON(!rx_page_info->page);
 683
 684         if (rx_page_info->last_page_user) {
 685                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 686                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 687                 rx_page_info->last_page_user = false;
 688         }
 689
 690         atomic_dec(&rxq->used);
 691         return rx_page_info;
 692 }
 693
 694 /* Throwaway the data in the Rx completion */
 695 static void be_rx_compl_discard(struct be_adapter *adapter,
 696                         struct be_eth_rx_compl *rxcp)
 697 {
 698         struct be_queue_info *rxq = &adapter->rx_obj.q;
 699         struct be_rx_page_info *page_info;
 700         u16 rxq_idx, i, num_rcvd;
 701
 702         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 703         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 704
 705         for (i = 0; i < num_rcvd; i++) {
 706                 page_info = get_rx_page_info(adapter, rxq_idx);
 707                 put_page(page_info->page);
 708                 memset(page_info, 0, sizeof(*page_info));
 709                 index_inc(&rxq_idx, rxq->len);
 710         }
 711 }
 712
 713 /*
 714  * skb_fill_rx_data forms a complete skb for an ether frame
 715  * indicated by rxcp.
 716  */
 717 static void skb_fill_rx_data(struct be_adapter *adapter,
 718                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
 719                         u16 num_rcvd)
 720 {
 721         struct be_queue_info *rxq = &adapter->rx_obj.q;
 722         struct be_rx_page_info *page_info;
 723         u16 rxq_idx, i, j;
 724         u32 pktsize, hdr_len, curr_frag_len, size;
 725         u8 *start;
 726
 727         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 728         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 729
 730         page_info = get_rx_page_info(adapter, rxq_idx);
 731
 732         start = page_address(page_info->page) + page_info->page_offset;
 733         prefetch(start);
 734
 735         /* Copy data in the first descriptor of this completion */
 736         curr_frag_len = min(pktsize, rx_frag_size);
 737
 738         /* Copy the header portion into skb_data */
 739         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 740         memcpy(skb->data, start, hdr_len);
 741         skb->len = curr_frag_len;
 742         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 743                 /* Complete packet has now been moved to data */
 744                 put_page(page_info->page);
 745                 skb->data_len = 0;
 746                 skb->tail += curr_frag_len;
 747         } else {
 748                 skb_shinfo(skb)->nr_frags = 1;
 749                 skb_shinfo(skb)->frags[0].page = page_info->page;
 750                 skb_shinfo(skb)->frags[0].page_offset =
 751                                         page_info->page_offset + hdr_len;
 752                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 753                 skb->data_len = curr_frag_len - hdr_len;
 754                 skb->tail += hdr_len;
 755         }
 756         page_info->page = NULL;
 757
 758         if (pktsize <= rx_frag_size) {
 759                 BUG_ON(num_rcvd != 1);
 760                 goto done;
 761         }
 762
 763         /* More frags present for this completion */
 764         size = pktsize;
 765         for (i = 1, j = 0; i < num_rcvd; i++) {
 766                 size -= curr_frag_len;
 767                 index_inc(&rxq_idx, rxq->len);
 768                 page_info = get_rx_page_info(adapter, rxq_idx);
 769
 770                 curr_frag_len = min(size, rx_frag_size);
 771
 772                 /* Coalesce all frags from the same physical page in one slot */
 773                 if (page_info->page_offset == 0) {
 774                         /* Fresh page */
 775                         j++;
 776                         skb_shinfo(skb)->frags[j].page = page_info->page;
 777                         skb_shinfo(skb)->frags[j].page_offset =
 778                                                         page_info->page_offset;
 779                         skb_shinfo(skb)->frags[j].size = 0;
 780                         skb_shinfo(skb)->nr_frags++;
 781                 } else {
 782                         put_page(page_info->page);
 783                 }
 784
 785                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 786                 skb->len += curr_frag_len;
 787                 skb->data_len += curr_frag_len;
 788
 789                 page_info->page = NULL;
 790         }
 791         BUG_ON(j > MAX_SKB_FRAGS);
 792
 793 done:
 794         be_rx_stats_update(adapter, pktsize, num_rcvd);
 795         return;
 796 }
 797
 798 /* Process the RX completion indicated by rxcp when GRO is disabled */
 799 static void be_rx_compl_process(struct be_adapter *adapter,
 800                         struct be_eth_rx_compl *rxcp)
 801 {
 802         struct sk_buff *skb;
 803         u32 vlanf, vid;
 804         u16 num_rcvd;
 805         u8 vtm;
 806
 807         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 808         /* Is it a flush compl that has no data */
 809         if (unlikely(num_rcvd == 0))
 810                 return;
 811
 812         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 813         if (unlikely(!skb)) {
 814                 if (net_ratelimit())
 815                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 816                 be_rx_compl_discard(adapter, rxcp);
 817                 return;
 818         }
 819
 820         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 821
 822         if (do_pkt_csum(rxcp, adapter->rx_csum))
 823                 skb->ip_summed = CHECKSUM_NONE;
 824         else
 825                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 826
 827         skb->truesize = skb->len + sizeof(struct sk_buff);
 828         skb->protocol = eth_type_trans(skb, adapter->netdev);
 829
 830         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 831         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 832
 833         /* vlanf could be wrongly set in some cards.
 834          * ignore if vtm is not set */
 835         if ((adapter->cap & 0x400) && !vtm)
 836                 vlanf = 0;
 837
 838         if (unlikely(vlanf)) {
 839                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 840                         kfree_skb(skb);
 841                         return;
 842                 }
 843                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 844                 vid = be16_to_cpu(vid);
 845                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 846         } else {
 847                 netif_receive_skb(skb);
 848         }
 849
 850         return;
 851 }
 852
 853 /* Process the RX completion indicated by rxcp when GRO is enabled */
 854 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 855                         struct be_eth_rx_compl *rxcp)
 856 {
 857         struct be_rx_page_info *page_info;
 858         struct sk_buff *skb = NULL;
 859         struct be_queue_info *rxq = &adapter->rx_obj.q;
 860         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 861         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 862         u16 i, rxq_idx = 0, vid, j;
 863         u8 vtm;
 864
 865         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 866         /* Is it a flush compl that has no data */
 867         if (unlikely(num_rcvd == 0))
 868                 return;
 869
 870         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 871         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 872         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 873         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 874
 875         /* vlanf could be wrongly set in some cards.
 876          * ignore if vtm is not set */
 877         if ((adapter->cap & 0x400) && !vtm)
 878                 vlanf = 0;
 879
 880         skb = napi_get_frags(&eq_obj->napi);
 881         if (!skb) {
 882                 be_rx_compl_discard(adapter, rxcp);
 883                 return;
 884         }
 885
 886         remaining = pkt_size;
 887         for (i = 0, j = -1; i < num_rcvd; i++) {
 888                 page_info = get_rx_page_info(adapter, rxq_idx);
 889
 890                 curr_frag_len = min(remaining, rx_frag_size);
 891
 892                 /* Coalesce all frags from the same physical page in one slot */
 893                 if (i == 0 || page_info->page_offset == 0) {
 894                         /* First frag or Fresh page */
 895                         j++;
 896                         skb_shinfo(skb)->frags[j].page = page_info->page;
 897                         skb_shinfo(skb)->frags[j].page_offset =
 898                                                         page_info->page_offset;
 899                         skb_shinfo(skb)->frags[j].size = 0;
 900                 } else {
 901                         put_page(page_info->page);
 902                 }
 903                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 904
 905                 remaining -= curr_frag_len;
 906                 index_inc(&rxq_idx, rxq->len);
 907                 memset(page_info, 0, sizeof(*page_info));
 908         }
 909         BUG_ON(j > MAX_SKB_FRAGS);
 910
 911         skb_shinfo(skb)->nr_frags = j + 1;
 912         skb->len = pkt_size;
 913         skb->data_len = pkt_size;
 914         skb->truesize += pkt_size;
 915         skb->ip_summed = CHECKSUM_UNNECESSARY;
 916
 917         if (likely(!vlanf)) {
 918                 napi_gro_frags(&eq_obj->napi);
 919         } else {
 920                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 921                 vid = be16_to_cpu(vid);
 922
 923                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 924                         return;
 925
 926                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 927         }
 928
 929         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 930         return;
 931 }
 932
 933 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 934 {
 935         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 936
 937         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 938                 return NULL;
 939
 940         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 941
 942         queue_tail_inc(&adapter->rx_obj.cq);
 943         return rxcp;
 944 }
 945
 946 /* To reset the valid bit, we need to reset the whole word as
 947  * when walking the queue the valid entries are little-endian
 948  * and invalid entries are host endian
 949  */
 950 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 951 {
 952         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 953 }
 954
 955 static inline struct page *be_alloc_pages(u32 size)
 956 {
 957         gfp_t alloc_flags = GFP_ATOMIC;
 958         u32 order = get_order(size);
 959         if (order > 0)
 960                 alloc_flags |= __GFP_COMP;
 961         return  alloc_pages(alloc_flags, order);
 962 }
 963
 964 /*
 965  * Allocate a page, split it to fragments of size rx_frag_size and post as
 966  * receive buffers to BE
 967  */
 968 static void be_post_rx_frags(struct be_adapter *adapter)
 969 {
 970         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 971         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 972         struct be_queue_info *rxq = &adapter->rx_obj.q;
 973         struct page *pagep = NULL;
 974         struct be_eth_rx_d *rxd;
 975         u64 page_dmaaddr = 0, frag_dmaaddr;
 976         u32 posted, page_offset = 0;
 977
 978         page_info = &page_info_tbl[rxq->head];
 979         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 980                 if (!pagep) {
 981                         pagep = be_alloc_pages(adapter->big_page_size);
 982                         if (unlikely(!pagep)) {
 983                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 984                                 break;
 985                         }
 986                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 987                                                 adapter->big_page_size,
 988                                                 PCI_DMA_FROMDEVICE);
 989                         page_info->page_offset = 0;
 990                 } else {
 991                         get_page(pagep);
 992                         page_info->page_offset = page_offset + rx_frag_size;
 993                 }
 994                 page_offset = page_info->page_offset;
 995                 page_info->page = pagep;
 996                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 997                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 998
 999                 rxd = queue_head_node(rxq);
1000                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1001                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1002
1003                 /* Any space left in the current big page for another frag? */
1004                 if ((page_offset + rx_frag_size + rx_frag_size) >
1005                                         adapter->big_page_size) {
1006                         pagep = NULL;
1007                         page_info->last_page_user = true;
1008                 }
1009
1010                 prev_page_info = page_info;
1011                 queue_head_inc(rxq);
1012                 page_info = &page_info_tbl[rxq->head];
1013         }
1014         if (pagep)
1015                 prev_page_info->last_page_user = true;
1016
1017         if (posted) {
1018                 atomic_add(posted, &rxq->used);
1019                 be_rxq_notify(adapter, rxq->id, posted);
1020         } else if (atomic_read(&rxq->used) == 0) {
1021                 /* Let be_worker replenish when memory is available */
1022                 adapter->rx_post_starved = true;
1023         }
1024
1025         return;
1026 }
1027
1028 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1029 {
1030         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1031
1032         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1033                 return NULL;
1034
1035         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1036
1037         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1038
1039         queue_tail_inc(tx_cq);
1040         return txcp;
1041 }
1042
1043 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1044 {
1045         struct be_queue_info *txq = &adapter->tx_obj.q;
1046         struct be_eth_wrb *wrb;
1047         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1048         struct sk_buff *sent_skb;
1049         u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1050         bool unmap_skb_hdr = true;
1051
1052         sent_skb = sent_skbs[txq->tail];
1053         BUG_ON(!sent_skb);
1054         sent_skbs[txq->tail] = NULL;
1055
1056         /* skip header wrb */
1057         queue_tail_inc(txq);
1058
1059         do {
1060                 cur_index = txq->tail;
1061                 wrb = queue_tail_node(txq);
1062                 unmap_tx_frag(adapter->pdev, wrb, (unmap_skb_hdr &&
1063                                         sent_skb->len > sent_skb->data_len));
1064                 unmap_skb_hdr = false;
1065
1066                 num_wrbs++;
1067                 queue_tail_inc(txq);
1068         } while (cur_index != last_index);
1069
1070         atomic_sub(num_wrbs, &txq->used);
1071
1072         kfree_skb(sent_skb);
1073 }
1074
1075 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1076 {
1077         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1078
1079         if (!eqe->evt)
1080                 return NULL;
1081
1082         eqe->evt = le32_to_cpu(eqe->evt);
1083         queue_tail_inc(&eq_obj->q);
1084         return eqe;
1085 }
1086
1087 static int event_handle(struct be_adapter *adapter,
1088                         struct be_eq_obj *eq_obj)
1089 {
1090         struct be_eq_entry *eqe;
1091         u16 num = 0;
1092
1093         while ((eqe = event_get(eq_obj)) != NULL) {
1094                 eqe->evt = 0;
1095                 num++;
1096         }
1097
1098         /* Deal with any spurious interrupts that come
1099          * without events
1100          */
1101         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1102         if (num)
1103                 napi_schedule(&eq_obj->napi);
1104
1105         return num;
1106 }
1107
1108 /* Just read and notify events without processing them.
1109  * Used at the time of destroying event queues */
1110 static void be_eq_clean(struct be_adapter *adapter,
1111                         struct be_eq_obj *eq_obj)
1112 {
1113         struct be_eq_entry *eqe;
1114         u16 num = 0;
1115
1116         while ((eqe = event_get(eq_obj)) != NULL) {
1117                 eqe->evt = 0;
1118                 num++;
1119         }
1120
1121         if (num)
1122                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1123 }
1124
1125 static void be_rx_q_clean(struct be_adapter *adapter)
1126 {
1127         struct be_rx_page_info *page_info;
1128         struct be_queue_info *rxq = &adapter->rx_obj.q;
1129         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1130         struct be_eth_rx_compl *rxcp;
1131         u16 tail;
1132
1133         /* First cleanup pending rx completions */
1134         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1135                 be_rx_compl_discard(adapter, rxcp);
1136                 be_rx_compl_reset(rxcp);
1137                 be_cq_notify(adapter, rx_cq->id, true, 1);
1138         }
1139
1140         /* Then free posted rx buffer that were not used */
1141         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1142         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1143                 page_info = get_rx_page_info(adapter, tail);
1144                 put_page(page_info->page);
1145                 memset(page_info, 0, sizeof(*page_info));
1146         }
1147         BUG_ON(atomic_read(&rxq->used));
1148 }
1149
1150 static void be_tx_compl_clean(struct be_adapter *adapter)
1151 {
1152         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1153         struct be_queue_info *txq = &adapter->tx_obj.q;
1154         struct be_eth_tx_compl *txcp;
1155         u16 end_idx, cmpl = 0, timeo = 0;
1156         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1157         struct sk_buff *sent_skb;
1158         bool dummy_wrb;
1159
1160         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1161         do {
1162                 while ((txcp = be_tx_compl_get(tx_cq))) {
1163                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1164                                         wrb_index, txcp);
1165                         be_tx_compl_process(adapter, end_idx);
1166                         cmpl++;
1167                 }
1168                 if (cmpl) {
1169                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1170                         cmpl = 0;
1171                 }
1172
1173                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1174                         break;
1175
1176                 mdelay(1);
1177         } while (true);
1178
1179         if (atomic_read(&txq->used))
1180                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1181                         atomic_read(&txq->used));
1182
1183         /* free posted tx for which compls will never arrive */
1184         while (atomic_read(&txq->used)) {
1185                 sent_skb = sent_skbs[txq->tail];
1186                 end_idx = txq->tail;
1187                 index_adv(&end_idx,
1188                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1189                 be_tx_compl_process(adapter, end_idx);
1190         }
1191 }
1192
1193 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1194 {
1195         struct be_queue_info *q;
1196
1197         q = &adapter->mcc_obj.q;
1198         if (q->created)
1199                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1200         be_queue_free(adapter, q);
1201
1202         q = &adapter->mcc_obj.cq;
1203         if (q->created)
1204                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1205         be_queue_free(adapter, q);
1206 }
1207
1208 /* Must be called only after TX qs are created as MCC shares TX EQ */
1209 static int be_mcc_queues_create(struct be_adapter *adapter)
1210 {
1211         struct be_queue_info *q, *cq;
1212
1213         /* Alloc MCC compl queue */
1214         cq = &adapter->mcc_obj.cq;
1215         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1216                         sizeof(struct be_mcc_compl)))
1217                 goto err;
1218
1219         /* Ask BE to create MCC compl queue; share TX's eq */
1220         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1221                 goto mcc_cq_free;
1222
1223         /* Alloc MCC queue */
1224         q = &adapter->mcc_obj.q;
1225         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1226                 goto mcc_cq_destroy;
1227
1228         /* Ask BE to create MCC queue */
1229         if (be_cmd_mccq_create(adapter, q, cq))
1230                 goto mcc_q_free;
1231
1232         return 0;
1233
1234 mcc_q_free:
1235         be_queue_free(adapter, q);
1236 mcc_cq_destroy:
1237         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1238 mcc_cq_free:
1239         be_queue_free(adapter, cq);
1240 err:
1241         return -1;
1242 }
1243
1244 static void be_tx_queues_destroy(struct be_adapter *adapter)
1245 {
1246         struct be_queue_info *q;
1247
1248         q = &adapter->tx_obj.q;
1249         if (q->created)
1250                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1251         be_queue_free(adapter, q);
1252
1253         q = &adapter->tx_obj.cq;
1254         if (q->created)
1255                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1256         be_queue_free(adapter, q);
1257
1258         /* Clear any residual events */
1259         be_eq_clean(adapter, &adapter->tx_eq);
1260
1261         q = &adapter->tx_eq.q;
1262         if (q->created)
1263                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1264         be_queue_free(adapter, q);
1265 }
1266
1267 static int be_tx_queues_create(struct be_adapter *adapter)
1268 {
1269         struct be_queue_info *eq, *q, *cq;
1270
1271         adapter->tx_eq.max_eqd = 0;
1272         adapter->tx_eq.min_eqd = 0;
1273         adapter->tx_eq.cur_eqd = 96;
1274         adapter->tx_eq.enable_aic = false;
1275         /* Alloc Tx Event queue */
1276         eq = &adapter->tx_eq.q;
1277         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1278                 return -1;
1279
1280         /* Ask BE to create Tx Event queue */
1281         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1282                 goto tx_eq_free;
1283         /* Alloc TX eth compl queue */
1284         cq = &adapter->tx_obj.cq;
1285         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1286                         sizeof(struct be_eth_tx_compl)))
1287                 goto tx_eq_destroy;
1288
1289         /* Ask BE to create Tx eth compl queue */
1290         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1291                 goto tx_cq_free;
1292
1293         /* Alloc TX eth queue */
1294         q = &adapter->tx_obj.q;
1295         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1296                 goto tx_cq_destroy;
1297
1298         /* Ask BE to create Tx eth queue */
1299         if (be_cmd_txq_create(adapter, q, cq))
1300                 goto tx_q_free;
1301         return 0;
1302
1303 tx_q_free:
1304         be_queue_free(adapter, q);
1305 tx_cq_destroy:
1306         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1307 tx_cq_free:
1308         be_queue_free(adapter, cq);
1309 tx_eq_destroy:
1310         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1311 tx_eq_free:
1312         be_queue_free(adapter, eq);
1313         return -1;
1314 }
1315
1316 static void be_rx_queues_destroy(struct be_adapter *adapter)
1317 {
1318         struct be_queue_info *q;
1319
1320         q = &adapter->rx_obj.q;
1321         if (q->created) {
1322                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1323
1324                 /* After the rxq is invalidated, wait for a grace time
1325                  * of 1ms for all dma to end and the flush compl to arrive
1326                  */
1327                 mdelay(1);
1328                 be_rx_q_clean(adapter);
1329         }
1330         be_queue_free(adapter, q);
1331
1332         q = &adapter->rx_obj.cq;
1333         if (q->created)
1334                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1335         be_queue_free(adapter, q);
1336
1337         /* Clear any residual events */
1338         be_eq_clean(adapter, &adapter->rx_eq);
1339
1340         q = &adapter->rx_eq.q;
1341         if (q->created)
1342                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1343         be_queue_free(adapter, q);
1344 }
1345
1346 static int be_rx_queues_create(struct be_adapter *adapter)
1347 {
1348         struct be_queue_info *eq, *q, *cq;
1349         int rc;
1350
1351         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1352         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1353         adapter->rx_eq.min_eqd = 0;
1354         adapter->rx_eq.cur_eqd = 0;
1355         adapter->rx_eq.enable_aic = true;
1356
1357         /* Alloc Rx Event queue */
1358         eq = &adapter->rx_eq.q;
1359         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1360                                 sizeof(struct be_eq_entry));
1361         if (rc)
1362                 return rc;
1363
1364         /* Ask BE to create Rx Event queue */
1365         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1366         if (rc)
1367                 goto rx_eq_free;
1368
1369         /* Alloc RX eth compl queue */
1370         cq = &adapter->rx_obj.cq;
1371         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1372                         sizeof(struct be_eth_rx_compl));
1373         if (rc)
1374                 goto rx_eq_destroy;
1375
1376         /* Ask BE to create Rx eth compl queue */
1377         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1378         if (rc)
1379                 goto rx_cq_free;
1380
1381         /* Alloc RX eth queue */
1382         q = &adapter->rx_obj.q;
1383         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1384         if (rc)
1385                 goto rx_cq_destroy;
1386
1387         /* Ask BE to create Rx eth queue */
1388         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1389                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1390         if (rc)
1391                 goto rx_q_free;
1392
1393         return 0;
1394 rx_q_free:
1395         be_queue_free(adapter, q);
1396 rx_cq_destroy:
1397         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1398 rx_cq_free:
1399         be_queue_free(adapter, cq);
1400 rx_eq_destroy:
1401         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1402 rx_eq_free:
1403         be_queue_free(adapter, eq);
1404         return rc;
1405 }
1406
1407 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1408 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1409 {
1410         return eq_id % 8;
1411 }
1412
1413 static irqreturn_t be_intx(int irq, void *dev)
1414 {
1415         struct be_adapter *adapter = dev;
1416         int isr;
1417
1418         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1419                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1420         if (!isr)
1421                 return IRQ_NONE;
1422
1423         event_handle(adapter, &adapter->tx_eq);
1424         event_handle(adapter, &adapter->rx_eq);
1425
1426         return IRQ_HANDLED;
1427 }
1428
1429 static irqreturn_t be_msix_rx(int irq, void *dev)
1430 {
1431         struct be_adapter *adapter = dev;
1432
1433         event_handle(adapter, &adapter->rx_eq);
1434
1435         return IRQ_HANDLED;
1436 }
1437
1438 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1439 {
1440         struct be_adapter *adapter = dev;
1441
1442         event_handle(adapter, &adapter->tx_eq);
1443
1444         return IRQ_HANDLED;
1445 }
1446
1447 static inline bool do_gro(struct be_adapter *adapter,
1448                         struct be_eth_rx_compl *rxcp)
1449 {
1450         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1451         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1452
1453         if (err)
1454                 drvr_stats(adapter)->be_rxcp_err++;
1455
1456         return (tcp_frame && !err) ? true : false;
1457 }
1458
1459 int be_poll_rx(struct napi_struct *napi, int budget)
1460 {
1461         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1462         struct be_adapter *adapter =
1463                 container_of(rx_eq, struct be_adapter, rx_eq);
1464         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1465         struct be_eth_rx_compl *rxcp;
1466         u32 work_done;
1467
1468         adapter->stats.drvr_stats.be_rx_polls++;
1469         for (work_done = 0; work_done < budget; work_done++) {
1470                 rxcp = be_rx_compl_get(adapter);
1471                 if (!rxcp)
1472                         break;
1473
1474                 if (do_gro(adapter, rxcp))
1475                         be_rx_compl_process_gro(adapter, rxcp);
1476                 else
1477                         be_rx_compl_process(adapter, rxcp);
1478
1479                 be_rx_compl_reset(rxcp);
1480         }
1481
1482         /* Refill the queue */
1483         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1484                 be_post_rx_frags(adapter);
1485
1486         /* All consumed */
1487         if (work_done < budget) {
1488                 napi_complete(napi);
1489                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1490         } else {
1491                 /* More to be consumed; continue with interrupts disabled */
1492                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1493         }
1494         return work_done;
1495 }
1496
1497 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1498  * For TX/MCC we don't honour budget; consume everything
1499  */
1500 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1501 {
1502         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1503         struct be_adapter *adapter =
1504                 container_of(tx_eq, struct be_adapter, tx_eq);
1505         struct be_queue_info *txq = &adapter->tx_obj.q;
1506         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1507         struct be_eth_tx_compl *txcp;
1508         int tx_compl = 0, mcc_compl, status = 0;
1509         u16 end_idx;
1510
1511         while ((txcp = be_tx_compl_get(tx_cq))) {
1512                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1513                                 wrb_index, txcp);
1514                 be_tx_compl_process(adapter, end_idx);
1515                 tx_compl++;
1516         }
1517
1518         mcc_compl = be_process_mcc(adapter, &status);
1519
1520         napi_complete(napi);
1521
1522         if (mcc_compl) {
1523                 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1524                 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1525         }
1526
1527         if (tx_compl) {
1528                 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1529
1530                 /* As Tx wrbs have been freed up, wake up netdev queue if
1531                  * it was stopped due to lack of tx wrbs.
1532                  */
1533                 if (netif_queue_stopped(adapter->netdev) &&
1534                         atomic_read(&txq->used) < txq->len / 2) {
1535                         netif_wake_queue(adapter->netdev);
1536                 }
1537
1538                 drvr_stats(adapter)->be_tx_events++;
1539                 drvr_stats(adapter)->be_tx_compl += tx_compl;
1540         }
1541
1542         return 1;
1543 }
1544
1545 static void be_worker(struct work_struct *work)
1546 {
1547         struct be_adapter *adapter =
1548                 container_of(work, struct be_adapter, work.work);
1549
1550         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1551
1552         /* Set EQ delay */
1553         be_rx_eqd_update(adapter);
1554
1555         be_tx_rate_update(adapter);
1556         be_rx_rate_update(adapter);
1557
1558         if (adapter->rx_post_starved) {
1559                 adapter->rx_post_starved = false;
1560                 be_post_rx_frags(adapter);
1561         }
1562
1563         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1564 }
1565
1566 static void be_msix_disable(struct be_adapter *adapter)
1567 {
1568         if (adapter->msix_enabled) {
1569                 pci_disable_msix(adapter->pdev);
1570                 adapter->msix_enabled = false;
1571         }
1572 }
1573
1574 static void be_msix_enable(struct be_adapter *adapter)
1575 {
1576         int i, status;
1577
1578         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1579                 adapter->msix_entries[i].entry = i;
1580
1581         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1582                 BE_NUM_MSIX_VECTORS);
1583         if (status == 0)
1584                 adapter->msix_enabled = true;
1585         return;
1586 }
1587
1588 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1589 {
1590         return adapter->msix_entries[
1591                         be_evt_bit_get(adapter, eq_id)].vector;
1592 }
1593
1594 static int be_request_irq(struct be_adapter *adapter,
1595                 struct be_eq_obj *eq_obj,
1596                 void *handler, char *desc)
1597 {
1598         struct net_device *netdev = adapter->netdev;
1599         int vec;
1600
1601         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1602         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1603         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1604 }
1605
1606 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1607 {
1608         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1609         free_irq(vec, adapter);
1610 }
1611
1612 static int be_msix_register(struct be_adapter *adapter)
1613 {
1614         int status;
1615
1616         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1617         if (status)
1618                 goto err;
1619
1620         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1621         if (status)
1622                 goto free_tx_irq;
1623
1624         return 0;
1625
1626 free_tx_irq:
1627         be_free_irq(adapter, &adapter->tx_eq);
1628 err:
1629         dev_warn(&adapter->pdev->dev,
1630                 "MSIX Request IRQ failed - err %d\n", status);
1631         pci_disable_msix(adapter->pdev);
1632         adapter->msix_enabled = false;
1633         return status;
1634 }
1635
1636 static int be_irq_register(struct be_adapter *adapter)
1637 {
1638         struct net_device *netdev = adapter->netdev;
1639         int status;
1640
1641         if (adapter->msix_enabled) {
1642                 status = be_msix_register(adapter);
1643                 if (status == 0)
1644                         goto done;
1645         }
1646
1647         /* INTx */
1648         netdev->irq = adapter->pdev->irq;
1649         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1650                         adapter);
1651         if (status) {
1652                 dev_err(&adapter->pdev->dev,
1653                         "INTx request IRQ failed - err %d\n", status);
1654                 return status;
1655         }
1656 done:
1657         adapter->isr_registered = true;
1658         return 0;
1659 }
1660
1661 static void be_irq_unregister(struct be_adapter *adapter)
1662 {
1663         struct net_device *netdev = adapter->netdev;
1664
1665         if (!adapter->isr_registered)
1666                 return;
1667
1668         /* INTx */
1669         if (!adapter->msix_enabled) {
1670                 free_irq(netdev->irq, adapter);
1671                 goto done;
1672         }
1673
1674         /* MSIx */
1675         be_free_irq(adapter, &adapter->tx_eq);
1676         be_free_irq(adapter, &adapter->rx_eq);
1677 done:
1678         adapter->isr_registered = false;
1679         return;
1680 }
1681
1682 static int be_open(struct net_device *netdev)
1683 {
1684         struct be_adapter *adapter = netdev_priv(netdev);
1685         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1686         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1687         bool link_up;
1688         int status;
1689         u8 mac_speed;
1690         u16 link_speed;
1691
1692         /* First time posting */
1693         be_post_rx_frags(adapter);
1694
1695         napi_enable(&rx_eq->napi);
1696         napi_enable(&tx_eq->napi);
1697
1698         be_irq_register(adapter);
1699
1700         be_intr_set(adapter, true);
1701
1702         /* The evt queues are created in unarmed state; arm them */
1703         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1704         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1705
1706         /* Rx compl queue may be in unarmed state; rearm it */
1707         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1708
1709         /* Now that interrupts are on we can process async mcc */
1710         be_async_mcc_enable(adapter);
1711
1712         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1713                         &link_speed);
1714         if (status)
1715                 goto ret_sts;
1716         be_link_status_update(adapter, link_up);
1717
1718         status = be_vid_config(adapter);
1719         if (status)
1720                 goto ret_sts;
1721
1722         status = be_cmd_set_flow_control(adapter,
1723                                         adapter->tx_fc, adapter->rx_fc);
1724         if (status)
1725                 goto ret_sts;
1726
1727         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1728 ret_sts:
1729         return status;
1730 }
1731
1732 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1733 {
1734         struct be_dma_mem cmd;
1735         int status = 0;
1736         u8 mac[ETH_ALEN];
1737
1738         memset(mac, 0, ETH_ALEN);
1739
1740         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1741         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1742         if (cmd.va == NULL)
1743                 return -1;
1744         memset(cmd.va, 0, cmd.size);
1745
1746         if (enable) {
1747                 status = pci_write_config_dword(adapter->pdev,
1748                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1749                 if (status) {
1750                         dev_err(&adapter->pdev->dev,
1751                                 "Could not enable Wake-on-lan\n");
1752                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1753                                         cmd.dma);
1754                         return status;
1755                 }
1756                 status = be_cmd_enable_magic_wol(adapter,
1757                                 adapter->netdev->dev_addr, &cmd);
1758                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1759                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1760         } else {
1761                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1762                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1763                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1764         }
1765
1766         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1767         return status;
1768 }
1769
1770 static int be_setup(struct be_adapter *adapter)
1771 {
1772         struct net_device *netdev = adapter->netdev;
1773         u32 cap_flags, en_flags;
1774         int status;
1775
1776         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1777                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1778                         BE_IF_FLAGS_PROMISCUOUS |
1779                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1780         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1781                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1782
1783         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1784                         netdev->dev_addr, false/* pmac_invalid */,
1785                         &adapter->if_handle, &adapter->pmac_id);
1786         if (status != 0)
1787                 goto do_none;
1788
1789         status = be_tx_queues_create(adapter);
1790         if (status != 0)
1791                 goto if_destroy;
1792
1793         status = be_rx_queues_create(adapter);
1794         if (status != 0)
1795                 goto tx_qs_destroy;
1796
1797         status = be_mcc_queues_create(adapter);
1798         if (status != 0)
1799                 goto rx_qs_destroy;
1800
1801         adapter->link_speed = -1;
1802
1803         return 0;
1804
1805 rx_qs_destroy:
1806         be_rx_queues_destroy(adapter);
1807 tx_qs_destroy:
1808         be_tx_queues_destroy(adapter);
1809 if_destroy:
1810         be_cmd_if_destroy(adapter, adapter->if_handle);
1811 do_none:
1812         return status;
1813 }
1814
1815 static int be_clear(struct be_adapter *adapter)
1816 {
1817         be_mcc_queues_destroy(adapter);
1818         be_rx_queues_destroy(adapter);
1819         be_tx_queues_destroy(adapter);
1820
1821         be_cmd_if_destroy(adapter, adapter->if_handle);
1822
1823         /* tell fw we're done with firing cmds */
1824         be_cmd_fw_clean(adapter);
1825         return 0;
1826 }
1827
1828 static int be_close(struct net_device *netdev)
1829 {
1830         struct be_adapter *adapter = netdev_priv(netdev);
1831         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1832         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1833         int vec;
1834
1835         cancel_delayed_work_sync(&adapter->work);
1836
1837         be_async_mcc_disable(adapter);
1838
1839         netif_stop_queue(netdev);
1840         netif_carrier_off(netdev);
1841         adapter->link_up = false;
1842
1843         be_intr_set(adapter, false);
1844
1845         if (adapter->msix_enabled) {
1846                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1847                 synchronize_irq(vec);
1848                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1849                 synchronize_irq(vec);
1850         } else {
1851                 synchronize_irq(netdev->irq);
1852         }
1853         be_irq_unregister(adapter);
1854
1855         napi_disable(&rx_eq->napi);
1856         napi_disable(&tx_eq->napi);
1857
1858         /* Wait for all pending tx completions to arrive so that
1859          * all tx skbs are freed.
1860          */
1861         be_tx_compl_clean(adapter);
1862
1863         return 0;
1864 }
1865
1866 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1867 char flash_cookie[2][16] =      {"*** SE FLAS",
1868                                 "H DIRECTORY *** "};
1869
1870 static bool be_flash_redboot(struct be_adapter *adapter,
1871                         const u8 *p, u32 img_start, int image_size,
1872                         int hdr_size)
1873 {
1874         u32 crc_offset;
1875         u8 flashed_crc[4];
1876         int status;
1877
1878         crc_offset = hdr_size + img_start + image_size - 4;
1879
1880         p += crc_offset;
1881
1882         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1883                         (img_start + image_size - 4));
1884         if (status) {
1885                 dev_err(&adapter->pdev->dev,
1886                 "could not get crc from flash, not flashing redboot\n");
1887                 return false;
1888         }
1889
1890         /*update redboot only if crc does not match*/
1891         if (!memcmp(flashed_crc, p, 4))
1892                 return false;
1893         else
1894                 return true;
1895 }
1896
1897 static int be_flash_data(struct be_adapter *adapter,
1898                         const struct firmware *fw,
1899                         struct be_dma_mem *flash_cmd, int num_of_images)
1900
1901 {
1902         int status = 0, i, filehdr_size = 0;
1903         u32 total_bytes = 0, flash_op;
1904         int num_bytes;
1905         const u8 *p = fw->data;
1906         struct be_cmd_write_flashrom *req = flash_cmd->va;
1907         struct flash_comp *pflashcomp;
1908         int num_comp;
1909
1910         struct flash_comp gen3_flash_types[9] = {
1911                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1912                         FLASH_IMAGE_MAX_SIZE_g3},
1913                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1914                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1915                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1916                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1917                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1918                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1919                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1920                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1921                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1922                         FLASH_IMAGE_MAX_SIZE_g3},
1923                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1924                         FLASH_IMAGE_MAX_SIZE_g3},
1925                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1926                         FLASH_IMAGE_MAX_SIZE_g3},
1927                 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
1928                         FLASH_NCSI_IMAGE_MAX_SIZE_g3}
1929         };
1930         struct flash_comp gen2_flash_types[8] = {
1931                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1932                         FLASH_IMAGE_MAX_SIZE_g2},
1933                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1934                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1935                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1936                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1937                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1938                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1939                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1940                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1941                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1942                         FLASH_IMAGE_MAX_SIZE_g2},
1943                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1944                         FLASH_IMAGE_MAX_SIZE_g2},
1945                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1946                          FLASH_IMAGE_MAX_SIZE_g2}
1947         };
1948
1949         if (adapter->generation == BE_GEN3) {
1950                 pflashcomp = gen3_flash_types;
1951                 filehdr_size = sizeof(struct flash_file_hdr_g3);
1952                 num_comp = 9;
1953         } else {
1954                 pflashcomp = gen2_flash_types;
1955                 filehdr_size = sizeof(struct flash_file_hdr_g2);
1956                 num_comp = 8;
1957         }
1958         for (i = 0; i < num_comp; i++) {
1959                 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
1960                                 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
1961                         continue;
1962                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1963                         (!be_flash_redboot(adapter, fw->data,
1964                          pflashcomp[i].offset, pflashcomp[i].size,
1965                          filehdr_size)))
1966                         continue;
1967                 p = fw->data;
1968                 p += filehdr_size + pflashcomp[i].offset
1969                         + (num_of_images * sizeof(struct image_hdr));
1970         if (p + pflashcomp[i].size > fw->data + fw->size)
1971                 return -1;
1972         total_bytes = pflashcomp[i].size;
1973                 while (total_bytes) {
1974                         if (total_bytes > 32*1024)
1975                                 num_bytes = 32*1024;
1976                         else
1977                                 num_bytes = total_bytes;
1978                         total_bytes -= num_bytes;
1979
1980                         if (!total_bytes)
1981                                 flash_op = FLASHROM_OPER_FLASH;
1982                         else
1983                                 flash_op = FLASHROM_OPER_SAVE;
1984                         memcpy(req->params.data_buf, p, num_bytes);
1985                         p += num_bytes;
1986                         status = be_cmd_write_flashrom(adapter, flash_cmd,
1987                                 pflashcomp[i].optype, flash_op, num_bytes);
1988                         if (status) {
1989                                 dev_err(&adapter->pdev->dev,
1990                                         "cmd to write to flash rom failed.\n");
1991                                 return -1;
1992                         }
1993                         yield();
1994                 }
1995         }
1996         return 0;
1997 }
1998
1999 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2000 {
2001         if (fhdr == NULL)
2002                 return 0;
2003         if (fhdr->build[0] == '3')
2004                 return BE_GEN3;
2005         else if (fhdr->build[0] == '2')
2006                 return BE_GEN2;
2007         else
2008                 return 0;
2009 }
2010
2011 int be_load_fw(struct be_adapter *adapter, u8 *func)
2012 {
2013         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2014         const struct firmware *fw;
2015         struct flash_file_hdr_g2 *fhdr;
2016         struct flash_file_hdr_g3 *fhdr3;
2017         struct image_hdr *img_hdr_ptr = NULL;
2018         struct be_dma_mem flash_cmd;
2019         int status, i = 0;
2020         const u8 *p;
2021
2022         strcpy(fw_file, func);
2023
2024         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2025         if (status)
2026                 goto fw_exit;
2027
2028         p = fw->data;
2029         fhdr = (struct flash_file_hdr_g2 *) p;
2030         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2031
2032         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2033         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2034                                         &flash_cmd.dma);
2035         if (!flash_cmd.va) {
2036                 status = -ENOMEM;
2037                 dev_err(&adapter->pdev->dev,
2038                         "Memory allocation failure while flashing\n");
2039                 goto fw_exit;
2040         }
2041
2042         if ((adapter->generation == BE_GEN3) &&
2043                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2044                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2045                 for (i = 0; i < fhdr3->num_imgs; i++) {
2046                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2047                                         (sizeof(struct flash_file_hdr_g3) +
2048                                         i * sizeof(struct image_hdr)));
2049                         if (img_hdr_ptr->imageid == 1) {
2050                                 status = be_flash_data(adapter, fw,
2051                                                 &flash_cmd, fhdr3->num_imgs);
2052                         }
2053
2054                 }
2055         } else if ((adapter->generation == BE_GEN2) &&
2056                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2057                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2058         } else {
2059                 dev_err(&adapter->pdev->dev,
2060                         "UFI and Interface are not compatible for flashing\n");
2061                 status = -1;
2062         }
2063
2064         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2065                                 flash_cmd.dma);
2066         if (status) {
2067                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2068                 goto fw_exit;
2069         }
2070
2071         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2072
2073 fw_exit:
2074         release_firmware(fw);
2075         return status;
2076 }
2077
2078 static struct net_device_ops be_netdev_ops = {
2079         .ndo_open               = be_open,
2080         .ndo_stop               = be_close,
2081         .ndo_start_xmit         = be_xmit,
2082         .ndo_get_stats          = be_get_stats,
2083         .ndo_set_rx_mode        = be_set_multicast_list,
2084         .ndo_set_mac_address    = be_mac_addr_set,
2085         .ndo_change_mtu         = be_change_mtu,
2086         .ndo_validate_addr      = eth_validate_addr,
2087         .ndo_vlan_rx_register   = be_vlan_register,
2088         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2089         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2090 };
2091
2092 static void be_netdev_init(struct net_device *netdev)
2093 {
2094         struct be_adapter *adapter = netdev_priv(netdev);
2095
2096         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2097                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2098                 NETIF_F_GRO;
2099
2100         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2101
2102         netdev->flags |= IFF_MULTICAST;
2103
2104         adapter->rx_csum = true;
2105
2106         /* Default settings for Rx and Tx flow control */
2107         adapter->rx_fc = true;
2108         adapter->tx_fc = true;
2109
2110         netif_set_gso_max_size(netdev, 65535);
2111
2112         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2113
2114         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2115
2116         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2117                 BE_NAPI_WEIGHT);
2118         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2119                 BE_NAPI_WEIGHT);
2120
2121         netif_carrier_off(netdev);
2122         netif_stop_queue(netdev);
2123 }
2124
2125 static void be_unmap_pci_bars(struct be_adapter *adapter)
2126 {
2127         if (adapter->csr)
2128                 iounmap(adapter->csr);
2129         if (adapter->db)
2130                 iounmap(adapter->db);
2131         if (adapter->pcicfg)
2132                 iounmap(adapter->pcicfg);
2133 }
2134
2135 static int be_map_pci_bars(struct be_adapter *adapter)
2136 {
2137         u8 __iomem *addr;
2138         int pcicfg_reg;
2139
2140         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2141                         pci_resource_len(adapter->pdev, 2));
2142         if (addr == NULL)
2143                 return -ENOMEM;
2144         adapter->csr = addr;
2145
2146         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2147                         128 * 1024);
2148         if (addr == NULL)
2149                 goto pci_map_err;
2150         adapter->db = addr;
2151
2152         if (adapter->generation == BE_GEN2)
2153                 pcicfg_reg = 1;
2154         else
2155                 pcicfg_reg = 0;
2156
2157         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2158                         pci_resource_len(adapter->pdev, pcicfg_reg));
2159         if (addr == NULL)
2160                 goto pci_map_err;
2161         adapter->pcicfg = addr;
2162
2163         return 0;
2164 pci_map_err:
2165         be_unmap_pci_bars(adapter);
2166         return -ENOMEM;
2167 }
2168
2169
2170 static void be_ctrl_cleanup(struct be_adapter *adapter)
2171 {
2172         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2173
2174         be_unmap_pci_bars(adapter);
2175
2176         if (mem->va)
2177                 pci_free_consistent(adapter->pdev, mem->size,
2178                         mem->va, mem->dma);
2179
2180         mem = &adapter->mc_cmd_mem;
2181         if (mem->va)
2182                 pci_free_consistent(adapter->pdev, mem->size,
2183                         mem->va, mem->dma);
2184 }
2185
2186 static int be_ctrl_init(struct be_adapter *adapter)
2187 {
2188         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2189         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2190         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2191         int status;
2192
2193         status = be_map_pci_bars(adapter);
2194         if (status)
2195                 goto done;
2196
2197         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2198         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2199                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2200         if (!mbox_mem_alloc->va) {
2201                 status = -ENOMEM;
2202                 goto unmap_pci_bars;
2203         }
2204
2205         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2206         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2207         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2208         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2209
2210         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2211         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2212                         &mc_cmd_mem->dma);
2213         if (mc_cmd_mem->va == NULL) {
2214                 status = -ENOMEM;
2215                 goto free_mbox;
2216         }
2217         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2218
2219         spin_lock_init(&adapter->mbox_lock);
2220         spin_lock_init(&adapter->mcc_lock);
2221         spin_lock_init(&adapter->mcc_cq_lock);
2222
2223         pci_save_state(adapter->pdev);
2224         return 0;
2225
2226 free_mbox:
2227         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2228                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2229
2230 unmap_pci_bars:
2231         be_unmap_pci_bars(adapter);
2232
2233 done:
2234         return status;
2235 }
2236
2237 static void be_stats_cleanup(struct be_adapter *adapter)
2238 {
2239         struct be_stats_obj *stats = &adapter->stats;
2240         struct be_dma_mem *cmd = &stats->cmd;
2241
2242         if (cmd->va)
2243                 pci_free_consistent(adapter->pdev, cmd->size,
2244                         cmd->va, cmd->dma);
2245 }
2246
2247 static int be_stats_init(struct be_adapter *adapter)
2248 {
2249         struct be_stats_obj *stats = &adapter->stats;
2250         struct be_dma_mem *cmd = &stats->cmd;
2251
2252         cmd->size = sizeof(struct be_cmd_req_get_stats);
2253         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2254         if (cmd->va == NULL)
2255                 return -1;
2256         memset(cmd->va, 0, cmd->size);
2257         return 0;
2258 }
2259
2260 static void __devexit be_remove(struct pci_dev *pdev)
2261 {
2262         struct be_adapter *adapter = pci_get_drvdata(pdev);
2263
2264         if (!adapter)
2265                 return;
2266
2267         unregister_netdev(adapter->netdev);
2268
2269         be_clear(adapter);
2270
2271         be_stats_cleanup(adapter);
2272
2273         be_ctrl_cleanup(adapter);
2274
2275         be_msix_disable(adapter);
2276
2277         pci_set_drvdata(pdev, NULL);
2278         pci_release_regions(pdev);
2279         pci_disable_device(pdev);
2280
2281         free_netdev(adapter->netdev);
2282 }
2283
2284 static int be_get_config(struct be_adapter *adapter)
2285 {
2286         int status;
2287         u8 mac[ETH_ALEN];
2288
2289         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2290         if (status)
2291                 return status;
2292
2293         status = be_cmd_query_fw_cfg(adapter,
2294                                 &adapter->port_num, &adapter->cap);
2295         if (status)
2296                 return status;
2297
2298         memset(mac, 0, ETH_ALEN);
2299         status = be_cmd_mac_addr_query(adapter, mac,
2300                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2301         if (status)
2302                 return status;
2303
2304         if (!is_valid_ether_addr(mac))
2305                 return -EADDRNOTAVAIL;
2306
2307         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2308         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2309
2310         if (adapter->cap & 0x400)
2311                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2312         else
2313                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2314
2315         return 0;
2316 }
2317
2318 static int __devinit be_probe(struct pci_dev *pdev,
2319                         const struct pci_device_id *pdev_id)
2320 {
2321         int status = 0;
2322         struct be_adapter *adapter;
2323         struct net_device *netdev;
2324
2325         status = pci_enable_device(pdev);
2326         if (status)
2327                 goto do_none;
2328
2329         status = pci_request_regions(pdev, DRV_NAME);
2330         if (status)
2331                 goto disable_dev;
2332         pci_set_master(pdev);
2333
2334         netdev = alloc_etherdev(sizeof(struct be_adapter));
2335         if (netdev == NULL) {
2336                 status = -ENOMEM;
2337                 goto rel_reg;
2338         }
2339         adapter = netdev_priv(netdev);
2340
2341         switch (pdev->device) {
2342         case BE_DEVICE_ID1:
2343         case OC_DEVICE_ID1:
2344                 adapter->generation = BE_GEN2;
2345                 break;
2346         case BE_DEVICE_ID2:
2347         case OC_DEVICE_ID2:
2348                 adapter->generation = BE_GEN3;
2349                 break;
2350         default:
2351                 adapter->generation = 0;
2352         }
2353
2354         adapter->pdev = pdev;
2355         pci_set_drvdata(pdev, adapter);
2356         adapter->netdev = netdev;
2357         be_netdev_init(netdev);
2358         SET_NETDEV_DEV(netdev, &pdev->dev);
2359
2360         be_msix_enable(adapter);
2361
2362         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2363         if (!status) {
2364                 netdev->features |= NETIF_F_HIGHDMA;
2365         } else {
2366                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2367                 if (status) {
2368                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2369                         goto free_netdev;
2370                 }
2371         }
2372
2373         status = be_ctrl_init(adapter);
2374         if (status)
2375                 goto free_netdev;
2376
2377         /* sync up with fw's ready state */
2378         status = be_cmd_POST(adapter);
2379         if (status)
2380                 goto ctrl_clean;
2381
2382         /* tell fw we're ready to fire cmds */
2383         status = be_cmd_fw_init(adapter);
2384         if (status)
2385                 goto ctrl_clean;
2386
2387         status = be_cmd_reset_function(adapter);
2388         if (status)
2389                 goto ctrl_clean;
2390
2391         status = be_stats_init(adapter);
2392         if (status)
2393                 goto ctrl_clean;
2394
2395         status = be_get_config(adapter);
2396         if (status)
2397                 goto stats_clean;
2398
2399         INIT_DELAYED_WORK(&adapter->work, be_worker);
2400
2401         status = be_setup(adapter);
2402         if (status)
2403                 goto stats_clean;
2404
2405         status = register_netdev(netdev);
2406         if (status != 0)
2407                 goto unsetup;
2408
2409         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2410         return 0;
2411
2412 unsetup:
2413         be_clear(adapter);
2414 stats_clean:
2415         be_stats_cleanup(adapter);
2416 ctrl_clean:
2417         be_ctrl_cleanup(adapter);
2418 free_netdev:
2419         be_msix_disable(adapter);
2420         free_netdev(adapter->netdev);
2421         pci_set_drvdata(pdev, NULL);
2422 rel_reg:
2423         pci_release_regions(pdev);
2424 disable_dev:
2425         pci_disable_device(pdev);
2426 do_none:
2427         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2428         return status;
2429 }
2430
2431 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2432 {
2433         struct be_adapter *adapter = pci_get_drvdata(pdev);
2434         struct net_device *netdev =  adapter->netdev;
2435
2436         if (adapter->wol)
2437                 be_setup_wol(adapter, true);
2438
2439         netif_device_detach(netdev);
2440         if (netif_running(netdev)) {
2441                 rtnl_lock();
2442                 be_close(netdev);
2443                 rtnl_unlock();
2444         }
2445         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2446         be_clear(adapter);
2447
2448         pci_save_state(pdev);
2449         pci_disable_device(pdev);
2450         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2451         return 0;
2452 }
2453
2454 static int be_resume(struct pci_dev *pdev)
2455 {
2456         int status = 0;
2457         struct be_adapter *adapter = pci_get_drvdata(pdev);
2458         struct net_device *netdev =  adapter->netdev;
2459
2460         netif_device_detach(netdev);
2461
2462         status = pci_enable_device(pdev);
2463         if (status)
2464                 return status;
2465
2466         pci_set_power_state(pdev, 0);
2467         pci_restore_state(pdev);
2468
2469         /* tell fw we're ready to fire cmds */
2470         status = be_cmd_fw_init(adapter);
2471         if (status)
2472                 return status;
2473
2474         be_setup(adapter);
2475         if (netif_running(netdev)) {
2476                 rtnl_lock();
2477                 be_open(netdev);
2478                 rtnl_unlock();
2479         }
2480         netif_device_attach(netdev);
2481
2482         if (adapter->wol)
2483                 be_setup_wol(adapter, false);
2484         return 0;
2485 }
2486
2487 /*
2488  * An FLR will stop BE from DMAing any data.
2489  */
2490 static void be_shutdown(struct pci_dev *pdev)
2491 {
2492         struct be_adapter *adapter = pci_get_drvdata(pdev);
2493         struct net_device *netdev =  adapter->netdev;
2494
2495         netif_device_detach(netdev);
2496
2497         be_cmd_reset_function(adapter);
2498
2499         if (adapter->wol)
2500                 be_setup_wol(adapter, true);
2501
2502         pci_disable_device(pdev);
2503
2504         return;
2505 }
2506
2507 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2508                                 pci_channel_state_t state)
2509 {
2510         struct be_adapter *adapter = pci_get_drvdata(pdev);
2511         struct net_device *netdev =  adapter->netdev;
2512
2513         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2514
2515         adapter->eeh_err = true;
2516
2517         netif_device_detach(netdev);
2518
2519         if (netif_running(netdev)) {
2520                 rtnl_lock();
2521                 be_close(netdev);
2522                 rtnl_unlock();
2523         }
2524         be_clear(adapter);
2525
2526         if (state == pci_channel_io_perm_failure)
2527                 return PCI_ERS_RESULT_DISCONNECT;
2528
2529         pci_disable_device(pdev);
2530
2531         return PCI_ERS_RESULT_NEED_RESET;
2532 }
2533
2534 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2535 {
2536         struct be_adapter *adapter = pci_get_drvdata(pdev);
2537         int status;
2538
2539         dev_info(&adapter->pdev->dev, "EEH reset\n");
2540         adapter->eeh_err = false;
2541
2542         status = pci_enable_device(pdev);
2543         if (status)
2544                 return PCI_ERS_RESULT_DISCONNECT;
2545
2546         pci_set_master(pdev);
2547         pci_set_power_state(pdev, 0);
2548         pci_restore_state(pdev);
2549
2550         /* Check if card is ok and fw is ready */
2551         status = be_cmd_POST(adapter);
2552         if (status)
2553                 return PCI_ERS_RESULT_DISCONNECT;
2554
2555         return PCI_ERS_RESULT_RECOVERED;
2556 }
2557
2558 static void be_eeh_resume(struct pci_dev *pdev)
2559 {
2560         int status = 0;
2561         struct be_adapter *adapter = pci_get_drvdata(pdev);
2562         struct net_device *netdev =  adapter->netdev;
2563
2564         dev_info(&adapter->pdev->dev, "EEH resume\n");
2565
2566         pci_save_state(pdev);
2567
2568         /* tell fw we're ready to fire cmds */
2569         status = be_cmd_fw_init(adapter);
2570         if (status)
2571                 goto err;
2572
2573         status = be_setup(adapter);
2574         if (status)
2575                 goto err;
2576
2577         if (netif_running(netdev)) {
2578                 status = be_open(netdev);
2579                 if (status)
2580                         goto err;
2581         }
2582         netif_device_attach(netdev);
2583         return;
2584 err:
2585         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2586         return;
2587 }
2588
2589 static struct pci_error_handlers be_eeh_handlers = {
2590         .error_detected = be_eeh_err_detected,
2591         .slot_reset = be_eeh_reset,
2592         .resume = be_eeh_resume,
2593 };
2594
2595 static struct pci_driver be_driver = {
2596         .name = DRV_NAME,
2597         .id_table = be_dev_ids,
2598         .probe = be_probe,
2599         .remove = be_remove,
2600         .suspend = be_suspend,
2601         .resume = be_resume,
2602         .shutdown = be_shutdown,
2603         .err_handler = &be_eeh_handlers
2604 };
2605
2606 static int __init be_init_module(void)
2607 {
2608         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2609             rx_frag_size != 2048) {
2610                 printk(KERN_WARNING DRV_NAME
2611                         " : Module param rx_frag_size must be 2048/4096/8192."
2612                         " Using 2048\n");
2613                 rx_frag_size = 2048;
2614         }
2615
2616         return pci_register_driver(&be_driver);
2617 }
2618 module_init(be_init_module);
2619
2620 static void __exit be_exit_module(void)
2621 {
2622         pci_unregister_driver(&be_driver);
2623 }
2624 module_exit(be_exit_module);