SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2009 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  36         { 0 }
  37 };
  38 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  39
  40 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  41 {
  42         struct be_dma_mem *mem = &q->dma_mem;
  43         if (mem->va)
  44                 pci_free_consistent(adapter->pdev, mem->size,
  45                         mem->va, mem->dma);
  46 }
  47
  48 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  49                 u16 len, u16 entry_size)
  50 {
  51         struct be_dma_mem *mem = &q->dma_mem;
  52
  53         memset(q, 0, sizeof(*q));
  54         q->len = len;
  55         q->entry_size = entry_size;
  56         mem->size = len * entry_size;
  57         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  58         if (!mem->va)
  59                 return -1;
  60         memset(mem->va, 0, mem->size);
  61         return 0;
  62 }
  63
  64 static void be_intr_set(struct be_adapter *adapter, bool enable)
  65 {
  66         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  67         u32 reg = ioread32(addr);
  68         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  69
  70         if (!enabled && enable)
  71                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  72         else if (enabled && !enable)
  73                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  74         else
  75                 return;
  76
  77         iowrite32(reg, addr);
  78 }
  79
  80 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  81 {
  82         u32 val = 0;
  83         val |= qid & DB_RQ_RING_ID_MASK;
  84         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  85         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  86 }
  87
  88 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  89 {
  90         u32 val = 0;
  91         val |= qid & DB_TXULP_RING_ID_MASK;
  92         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  93         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  94 }
  95
  96 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  97                 bool arm, bool clear_int, u16 num_popped)
  98 {
  99         u32 val = 0;
 100         val |= qid & DB_EQ_RING_ID_MASK;
 101         if (arm)
 102                 val |= 1 << DB_EQ_REARM_SHIFT;
 103         if (clear_int)
 104                 val |= 1 << DB_EQ_CLR_SHIFT;
 105         val |= 1 << DB_EQ_EVNT_SHIFT;
 106         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 107         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 108 }
 109
 110 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 111 {
 112         u32 val = 0;
 113         val |= qid & DB_CQ_RING_ID_MASK;
 114         if (arm)
 115                 val |= 1 << DB_CQ_REARM_SHIFT;
 116         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 117         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 118 }
 119
 120 static int be_mac_addr_set(struct net_device *netdev, void *p)
 121 {
 122         struct be_adapter *adapter = netdev_priv(netdev);
 123         struct sockaddr *addr = p;
 124         int status = 0;
 125
 126         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 127         if (status)
 128                 return status;
 129
 130         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 131                         adapter->if_handle, &adapter->pmac_id);
 132         if (!status)
 133                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 134
 135         return status;
 136 }
 137
 138 static void netdev_stats_update(struct be_adapter *adapter)
 139 {
 140         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 141         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 142         struct be_port_rxf_stats *port_stats =
 143                         &rxf_stats->port[adapter->port_num];
 144         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 145         struct be_erx_stats *erx_stats = &hw_stats->erx;
 146
 147         dev_stats->rx_packets = port_stats->rx_total_frames;
 148         dev_stats->tx_packets = port_stats->tx_unicastframes +
 149                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 150         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 151                                 (u64) port_stats->rx_bytes_lsd;
 152         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 153                                 (u64) port_stats->tx_bytes_lsd;
 154
 155         /* bad pkts received */
 156         dev_stats->rx_errors = port_stats->rx_crc_errors +
 157                 port_stats->rx_alignment_symbol_errors +
 158                 port_stats->rx_in_range_errors +
 159                 port_stats->rx_out_range_errors +
 160                 port_stats->rx_frame_too_long +
 161                 port_stats->rx_dropped_too_small +
 162                 port_stats->rx_dropped_too_short +
 163                 port_stats->rx_dropped_header_too_small +
 164                 port_stats->rx_dropped_tcp_length +
 165                 port_stats->rx_dropped_runt +
 166                 port_stats->rx_tcp_checksum_errs +
 167                 port_stats->rx_ip_checksum_errs +
 168                 port_stats->rx_udp_checksum_errs;
 169
 170         /*  no space in linux buffers: best possible approximation */
 171         dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
 172
 173         /* detailed rx errors */
 174         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 175                 port_stats->rx_out_range_errors +
 176                 port_stats->rx_frame_too_long;
 177
 178         /* receive ring buffer overflow */
 179         dev_stats->rx_over_errors = 0;
 180
 181         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 182
 183         /* frame alignment errors */
 184         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 185
 186         /* receiver fifo overrun */
 187         /* drops_no_pbuf is no per i/f, it's per BE card */
 188         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 189                                         port_stats->rx_input_fifo_overflow +
 190                                         rxf_stats->rx_drops_no_pbuf;
 191         /* receiver missed packetd */
 192         dev_stats->rx_missed_errors = 0;
 193
 194         /*  packet transmit problems */
 195         dev_stats->tx_errors = 0;
 196
 197         /* no space available in linux */
 198         dev_stats->tx_dropped = 0;
 199
 200         dev_stats->multicast = port_stats->tx_multicastframes;
 201         dev_stats->collisions = 0;
 202
 203         /* detailed tx_errors */
 204         dev_stats->tx_aborted_errors = 0;
 205         dev_stats->tx_carrier_errors = 0;
 206         dev_stats->tx_fifo_errors = 0;
 207         dev_stats->tx_heartbeat_errors = 0;
 208         dev_stats->tx_window_errors = 0;
 209 }
 210
 211 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 212 {
 213         struct net_device *netdev = adapter->netdev;
 214
 215         /* If link came up or went down */
 216         if (adapter->link_up != link_up) {
 217                 if (link_up) {
 218                         netif_start_queue(netdev);
 219                         netif_carrier_on(netdev);
 220                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 221                 } else {
 222                         netif_stop_queue(netdev);
 223                         netif_carrier_off(netdev);
 224                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 225                 }
 226                 adapter->link_up = link_up;
 227         }
 228 }
 229
 230 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 231 static void be_rx_eqd_update(struct be_adapter *adapter)
 232 {
 233         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 234         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 235         ulong now = jiffies;
 236         u32 eqd;
 237
 238         if (!rx_eq->enable_aic)
 239                 return;
 240
 241         /* Wrapped around */
 242         if (time_before(now, stats->rx_fps_jiffies)) {
 243                 stats->rx_fps_jiffies = now;
 244                 return;
 245         }
 246
 247         /* Update once a second */
 248         if ((now - stats->rx_fps_jiffies) < HZ)
 249                 return;
 250
 251         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 252                         ((now - stats->rx_fps_jiffies) / HZ);
 253
 254         stats->rx_fps_jiffies = now;
 255         stats->be_prev_rx_frags = stats->be_rx_frags;
 256         eqd = stats->be_rx_fps / 110000;
 257         eqd = eqd << 3;
 258         if (eqd > rx_eq->max_eqd)
 259                 eqd = rx_eq->max_eqd;
 260         if (eqd < rx_eq->min_eqd)
 261                 eqd = rx_eq->min_eqd;
 262         if (eqd < 10)
 263                 eqd = 0;
 264         if (eqd != rx_eq->cur_eqd)
 265                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 266
 267         rx_eq->cur_eqd = eqd;
 268 }
 269
 270 static struct net_device_stats *be_get_stats(struct net_device *dev)
 271 {
 272         struct be_adapter *adapter = netdev_priv(dev);
 273
 274         return &adapter->stats.net_stats;
 275 }
 276
 277 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 278 {
 279         u64 rate = bytes;
 280
 281         do_div(rate, ticks / HZ);
 282         rate <<= 3;                     /* bytes/sec -> bits/sec */
 283         do_div(rate, 1000000ul);        /* MB/Sec */
 284
 285         return rate;
 286 }
 287
 288 static void be_tx_rate_update(struct be_adapter *adapter)
 289 {
 290         struct be_drvr_stats *stats = drvr_stats(adapter);
 291         ulong now = jiffies;
 292
 293         /* Wrapped around? */
 294         if (time_before(now, stats->be_tx_jiffies)) {
 295                 stats->be_tx_jiffies = now;
 296                 return;
 297         }
 298
 299         /* Update tx rate once in two seconds */
 300         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 301                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 302                                                   - stats->be_tx_bytes_prev,
 303                                                  now - stats->be_tx_jiffies);
 304                 stats->be_tx_jiffies = now;
 305                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 306         }
 307 }
 308
 309 static void be_tx_stats_update(struct be_adapter *adapter,
 310                         u32 wrb_cnt, u32 copied, bool stopped)
 311 {
 312         struct be_drvr_stats *stats = drvr_stats(adapter);
 313         stats->be_tx_reqs++;
 314         stats->be_tx_wrbs += wrb_cnt;
 315         stats->be_tx_bytes += copied;
 316         if (stopped)
 317                 stats->be_tx_stops++;
 318 }
 319
 320 /* Determine number of WRB entries needed to xmit data in an skb */
 321 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 322 {
 323         int cnt = (skb->len > skb->data_len);
 324
 325         cnt += skb_shinfo(skb)->nr_frags;
 326
 327         /* to account for hdr wrb */
 328         cnt++;
 329         if (cnt & 1) {
 330                 /* add a dummy to make it an even num */
 331                 cnt++;
 332                 *dummy = true;
 333         } else
 334                 *dummy = false;
 335         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 336         return cnt;
 337 }
 338
 339 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 340 {
 341         wrb->frag_pa_hi = upper_32_bits(addr);
 342         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 343         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 344 }
 345
 346 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 347                 bool vlan, u32 wrb_cnt, u32 len)
 348 {
 349         memset(hdr, 0, sizeof(*hdr));
 350
 351         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 352
 353         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 354                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 355                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 356                         hdr, skb_shinfo(skb)->gso_size);
 357         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 358                 if (is_tcp_pkt(skb))
 359                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 360                 else if (is_udp_pkt(skb))
 361                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 362         }
 363
 364         if (vlan && vlan_tx_tag_present(skb)) {
 365                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 366                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 367                         hdr, vlan_tx_tag_get(skb));
 368         }
 369
 370         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 371         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 372         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 373         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 374 }
 375
 376
 377 static int make_tx_wrbs(struct be_adapter *adapter,
 378                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 379 {
 380         u64 busaddr;
 381         u32 i, copied = 0;
 382         struct pci_dev *pdev = adapter->pdev;
 383         struct sk_buff *first_skb = skb;
 384         struct be_queue_info *txq = &adapter->tx_obj.q;
 385         struct be_eth_wrb *wrb;
 386         struct be_eth_hdr_wrb *hdr;
 387
 388         hdr = queue_head_node(txq);
 389         atomic_add(wrb_cnt, &txq->used);
 390         queue_head_inc(txq);
 391
 392         if (skb_dma_map(&pdev->dev, skb, DMA_TO_DEVICE)) {
 393                 dev_err(&pdev->dev, "TX DMA mapping failed\n");
 394                 return 0;
 395         }
 396
 397         if (skb->len > skb->data_len) {
 398                 int len = skb->len - skb->data_len;
 399                 wrb = queue_head_node(txq);
 400                 busaddr = skb_shinfo(skb)->dma_head;
 401                 wrb_fill(wrb, busaddr, len);
 402                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 403                 queue_head_inc(txq);
 404                 copied += len;
 405         }
 406
 407         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 408                 struct skb_frag_struct *frag =
 409                         &skb_shinfo(skb)->frags[i];
 410
 411                 busaddr = skb_shinfo(skb)->dma_maps[i];
 412                 wrb = queue_head_node(txq);
 413                 wrb_fill(wrb, busaddr, frag->size);
 414                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 415                 queue_head_inc(txq);
 416                 copied += frag->size;
 417         }
 418
 419         if (dummy_wrb) {
 420                 wrb = queue_head_node(txq);
 421                 wrb_fill(wrb, 0, 0);
 422                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 423                 queue_head_inc(txq);
 424         }
 425
 426         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 427                 wrb_cnt, copied);
 428         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 429
 430         return copied;
 431 }
 432
 433 static netdev_tx_t be_xmit(struct sk_buff *skb,
 434                                  struct net_device *netdev)
 435
 436 {
 437         struct be_adapter *adapter = netdev_priv(netdev);
 438         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 439         struct be_queue_info *txq = &tx_obj->q;
 440         u32 wrb_cnt = 0, copied = 0;
 441         u32 start = txq->head;
 442         bool dummy_wrb, stopped = false;
 443
 444         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 445
 446         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 447         if (copied) {
 448                 /* record the sent skb in the sent_skb table */
 449                 BUG_ON(tx_obj->sent_skb_list[start]);
 450                 tx_obj->sent_skb_list[start] = skb;
 451
 452                 /* Ensure txq has space for the next skb; Else stop the queue
 453                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 454                  * tx compls of the current transmit which'll wake up the queue
 455                  */
 456                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 457                                                                 txq->len) {
 458                         netif_stop_queue(netdev);
 459                         stopped = true;
 460                 }
 461
 462                 be_txq_notify(adapter, txq->id, wrb_cnt);
 463
 464                 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 465         } else {
 466                 txq->head = start;
 467                 dev_kfree_skb_any(skb);
 468         }
 469         return NETDEV_TX_OK;
 470 }
 471
 472 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 473 {
 474         struct be_adapter *adapter = netdev_priv(netdev);
 475         if (new_mtu < BE_MIN_MTU ||
 476                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 477                 dev_info(&adapter->pdev->dev,
 478                         "MTU must be between %d and %d bytes\n",
 479                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 480                 return -EINVAL;
 481         }
 482         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 483                         netdev->mtu, new_mtu);
 484         netdev->mtu = new_mtu;
 485         return 0;
 486 }
 487
 488 /*
 489  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 490  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 491  * set the BE in promiscuous VLAN mode.
 492  */
 493 static void be_vid_config(struct net_device *netdev)
 494 {
 495         struct be_adapter *adapter = netdev_priv(netdev);
 496         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 497         u16 ntags = 0, i;
 498
 499         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 500                 /* Construct VLAN Table to give to HW */
 501                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 502                         if (adapter->vlan_tag[i]) {
 503                                 vtag[ntags] = cpu_to_le16(i);
 504                                 ntags++;
 505                         }
 506                 }
 507                 be_cmd_vlan_config(adapter, adapter->if_handle,
 508                         vtag, ntags, 1, 0);
 509         } else {
 510                 be_cmd_vlan_config(adapter, adapter->if_handle,
 511                         NULL, 0, 1, 1);
 512         }
 513 }
 514
 515 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 516 {
 517         struct be_adapter *adapter = netdev_priv(netdev);
 518         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 519         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 520
 521         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 522         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 523         adapter->vlan_grp = grp;
 524         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 525         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 526 }
 527
 528 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 529 {
 530         struct be_adapter *adapter = netdev_priv(netdev);
 531
 532         adapter->num_vlans++;
 533         adapter->vlan_tag[vid] = 1;
 534
 535         be_vid_config(netdev);
 536 }
 537
 538 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 539 {
 540         struct be_adapter *adapter = netdev_priv(netdev);
 541
 542         adapter->num_vlans--;
 543         adapter->vlan_tag[vid] = 0;
 544
 545         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 546         be_vid_config(netdev);
 547 }
 548
 549 static void be_set_multicast_list(struct net_device *netdev)
 550 {
 551         struct be_adapter *adapter = netdev_priv(netdev);
 552
 553         if (netdev->flags & IFF_PROMISC) {
 554                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 555                 adapter->promiscuous = true;
 556                 goto done;
 557         }
 558
 559         /* BE was previously in promiscous mode; disable it */
 560         if (adapter->promiscuous) {
 561                 adapter->promiscuous = false;
 562                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 563         }
 564
 565         if (netdev->flags & IFF_ALLMULTI) {
 566                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
 567                 goto done;
 568         }
 569
 570         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 571                 netdev->mc_count);
 572 done:
 573         return;
 574 }
 575
 576 static void be_rx_rate_update(struct be_adapter *adapter)
 577 {
 578         struct be_drvr_stats *stats = drvr_stats(adapter);
 579         ulong now = jiffies;
 580
 581         /* Wrapped around */
 582         if (time_before(now, stats->be_rx_jiffies)) {
 583                 stats->be_rx_jiffies = now;
 584                 return;
 585         }
 586
 587         /* Update the rate once in two seconds */
 588         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 589                 return;
 590
 591         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 592                                           - stats->be_rx_bytes_prev,
 593                                          now - stats->be_rx_jiffies);
 594         stats->be_rx_jiffies = now;
 595         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 596 }
 597
 598 static void be_rx_stats_update(struct be_adapter *adapter,
 599                 u32 pktsize, u16 numfrags)
 600 {
 601         struct be_drvr_stats *stats = drvr_stats(adapter);
 602
 603         stats->be_rx_compl++;
 604         stats->be_rx_frags += numfrags;
 605         stats->be_rx_bytes += pktsize;
 606 }
 607
 608 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 609 {
 610         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 611
 612         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 613         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 614         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 615         if (ip_version) {
 616                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 617                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 618         }
 619         ipv6_chk = (ip_version && (tcpf || udpf));
 620
 621         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 622 }
 623
 624 static struct be_rx_page_info *
 625 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 626 {
 627         struct be_rx_page_info *rx_page_info;
 628         struct be_queue_info *rxq = &adapter->rx_obj.q;
 629
 630         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 631         BUG_ON(!rx_page_info->page);
 632
 633         if (rx_page_info->last_page_user)
 634                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 635                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 636
 637         atomic_dec(&rxq->used);
 638         return rx_page_info;
 639 }
 640
 641 /* Throwaway the data in the Rx completion */
 642 static void be_rx_compl_discard(struct be_adapter *adapter,
 643                         struct be_eth_rx_compl *rxcp)
 644 {
 645         struct be_queue_info *rxq = &adapter->rx_obj.q;
 646         struct be_rx_page_info *page_info;
 647         u16 rxq_idx, i, num_rcvd;
 648
 649         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 650         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 651
 652         for (i = 0; i < num_rcvd; i++) {
 653                 page_info = get_rx_page_info(adapter, rxq_idx);
 654                 put_page(page_info->page);
 655                 memset(page_info, 0, sizeof(*page_info));
 656                 index_inc(&rxq_idx, rxq->len);
 657         }
 658 }
 659
 660 /*
 661  * skb_fill_rx_data forms a complete skb for an ether frame
 662  * indicated by rxcp.
 663  */
 664 static void skb_fill_rx_data(struct be_adapter *adapter,
 665                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 666 {
 667         struct be_queue_info *rxq = &adapter->rx_obj.q;
 668         struct be_rx_page_info *page_info;
 669         u16 rxq_idx, i, num_rcvd, j;
 670         u32 pktsize, hdr_len, curr_frag_len, size;
 671         u8 *start;
 672
 673         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 674         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 675         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 676
 677         page_info = get_rx_page_info(adapter, rxq_idx);
 678
 679         start = page_address(page_info->page) + page_info->page_offset;
 680         prefetch(start);
 681
 682         /* Copy data in the first descriptor of this completion */
 683         curr_frag_len = min(pktsize, rx_frag_size);
 684
 685         /* Copy the header portion into skb_data */
 686         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 687         memcpy(skb->data, start, hdr_len);
 688         skb->len = curr_frag_len;
 689         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 690                 /* Complete packet has now been moved to data */
 691                 put_page(page_info->page);
 692                 skb->data_len = 0;
 693                 skb->tail += curr_frag_len;
 694         } else {
 695                 skb_shinfo(skb)->nr_frags = 1;
 696                 skb_shinfo(skb)->frags[0].page = page_info->page;
 697                 skb_shinfo(skb)->frags[0].page_offset =
 698                                         page_info->page_offset + hdr_len;
 699                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 700                 skb->data_len = curr_frag_len - hdr_len;
 701                 skb->tail += hdr_len;
 702         }
 703         memset(page_info, 0, sizeof(*page_info));
 704
 705         if (pktsize <= rx_frag_size) {
 706                 BUG_ON(num_rcvd != 1);
 707                 goto done;
 708         }
 709
 710         /* More frags present for this completion */
 711         size = pktsize;
 712         for (i = 1, j = 0; i < num_rcvd; i++) {
 713                 size -= curr_frag_len;
 714                 index_inc(&rxq_idx, rxq->len);
 715                 page_info = get_rx_page_info(adapter, rxq_idx);
 716
 717                 curr_frag_len = min(size, rx_frag_size);
 718
 719                 /* Coalesce all frags from the same physical page in one slot */
 720                 if (page_info->page_offset == 0) {
 721                         /* Fresh page */
 722                         j++;
 723                         skb_shinfo(skb)->frags[j].page = page_info->page;
 724                         skb_shinfo(skb)->frags[j].page_offset =
 725                                                         page_info->page_offset;
 726                         skb_shinfo(skb)->frags[j].size = 0;
 727                         skb_shinfo(skb)->nr_frags++;
 728                 } else {
 729                         put_page(page_info->page);
 730                 }
 731
 732                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 733                 skb->len += curr_frag_len;
 734                 skb->data_len += curr_frag_len;
 735
 736                 memset(page_info, 0, sizeof(*page_info));
 737         }
 738         BUG_ON(j > MAX_SKB_FRAGS);
 739
 740 done:
 741         be_rx_stats_update(adapter, pktsize, num_rcvd);
 742         return;
 743 }
 744
 745 /* Process the RX completion indicated by rxcp when GRO is disabled */
 746 static void be_rx_compl_process(struct be_adapter *adapter,
 747                         struct be_eth_rx_compl *rxcp)
 748 {
 749         struct sk_buff *skb;
 750         u32 vtp, vid;
 751
 752         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 753
 754         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 755         if (!skb) {
 756                 if (net_ratelimit())
 757                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 758                 be_rx_compl_discard(adapter, rxcp);
 759                 return;
 760         }
 761
 762         skb_reserve(skb, NET_IP_ALIGN);
 763
 764         skb_fill_rx_data(adapter, skb, rxcp);
 765
 766         if (do_pkt_csum(rxcp, adapter->rx_csum))
 767                 skb->ip_summed = CHECKSUM_NONE;
 768         else
 769                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 770
 771         skb->truesize = skb->len + sizeof(struct sk_buff);
 772         skb->protocol = eth_type_trans(skb, adapter->netdev);
 773         skb->dev = adapter->netdev;
 774
 775         if (vtp) {
 776                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 777                         kfree_skb(skb);
 778                         return;
 779                 }
 780                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 781                 vid = be16_to_cpu(vid);
 782                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 783         } else {
 784                 netif_receive_skb(skb);
 785         }
 786
 787         return;
 788 }
 789
 790 /* Process the RX completion indicated by rxcp when GRO is enabled */
 791 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 792                         struct be_eth_rx_compl *rxcp)
 793 {
 794         struct be_rx_page_info *page_info;
 795         struct sk_buff *skb = NULL;
 796         struct be_queue_info *rxq = &adapter->rx_obj.q;
 797         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 798         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 799         u16 i, rxq_idx = 0, vid, j;
 800
 801         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 802         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 803         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 804         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 805
 806         skb = napi_get_frags(&eq_obj->napi);
 807         if (!skb) {
 808                 be_rx_compl_discard(adapter, rxcp);
 809                 return;
 810         }
 811
 812         remaining = pkt_size;
 813         for (i = 0, j = -1; i < num_rcvd; i++) {
 814                 page_info = get_rx_page_info(adapter, rxq_idx);
 815
 816                 curr_frag_len = min(remaining, rx_frag_size);
 817
 818                 /* Coalesce all frags from the same physical page in one slot */
 819                 if (i == 0 || page_info->page_offset == 0) {
 820                         /* First frag or Fresh page */
 821                         j++;
 822                         skb_shinfo(skb)->frags[j].page = page_info->page;
 823                         skb_shinfo(skb)->frags[j].page_offset =
 824                                                         page_info->page_offset;
 825                         skb_shinfo(skb)->frags[j].size = 0;
 826                 } else {
 827                         put_page(page_info->page);
 828                 }
 829                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 830
 831                 remaining -= curr_frag_len;
 832                 index_inc(&rxq_idx, rxq->len);
 833                 memset(page_info, 0, sizeof(*page_info));
 834         }
 835         BUG_ON(j > MAX_SKB_FRAGS);
 836
 837         skb_shinfo(skb)->nr_frags = j + 1;
 838         skb->len = pkt_size;
 839         skb->data_len = pkt_size;
 840         skb->truesize += pkt_size;
 841         skb->ip_summed = CHECKSUM_UNNECESSARY;
 842
 843         if (likely(!vlanf)) {
 844                 napi_gro_frags(&eq_obj->napi);
 845         } else {
 846                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 847                 vid = be16_to_cpu(vid);
 848
 849                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 850                         return;
 851
 852                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 853         }
 854
 855         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 856         return;
 857 }
 858
 859 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 860 {
 861         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 862
 863         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 864                 return NULL;
 865
 866         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 867
 868         queue_tail_inc(&adapter->rx_obj.cq);
 869         return rxcp;
 870 }
 871
 872 /* To reset the valid bit, we need to reset the whole word as
 873  * when walking the queue the valid entries are little-endian
 874  * and invalid entries are host endian
 875  */
 876 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 877 {
 878         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 879 }
 880
 881 static inline struct page *be_alloc_pages(u32 size)
 882 {
 883         gfp_t alloc_flags = GFP_ATOMIC;
 884         u32 order = get_order(size);
 885         if (order > 0)
 886                 alloc_flags |= __GFP_COMP;
 887         return  alloc_pages(alloc_flags, order);
 888 }
 889
 890 /*
 891  * Allocate a page, split it to fragments of size rx_frag_size and post as
 892  * receive buffers to BE
 893  */
 894 static void be_post_rx_frags(struct be_adapter *adapter)
 895 {
 896         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 897         struct be_rx_page_info *page_info = NULL;
 898         struct be_queue_info *rxq = &adapter->rx_obj.q;
 899         struct page *pagep = NULL;
 900         struct be_eth_rx_d *rxd;
 901         u64 page_dmaaddr = 0, frag_dmaaddr;
 902         u32 posted, page_offset = 0;
 903
 904         page_info = &page_info_tbl[rxq->head];
 905         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 906                 if (!pagep) {
 907                         pagep = be_alloc_pages(adapter->big_page_size);
 908                         if (unlikely(!pagep)) {
 909                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 910                                 break;
 911                         }
 912                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 913                                                 adapter->big_page_size,
 914                                                 PCI_DMA_FROMDEVICE);
 915                         page_info->page_offset = 0;
 916                 } else {
 917                         get_page(pagep);
 918                         page_info->page_offset = page_offset + rx_frag_size;
 919                 }
 920                 page_offset = page_info->page_offset;
 921                 page_info->page = pagep;
 922                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 923                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 924
 925                 rxd = queue_head_node(rxq);
 926                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 927                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 928                 queue_head_inc(rxq);
 929
 930                 /* Any space left in the current big page for another frag? */
 931                 if ((page_offset + rx_frag_size + rx_frag_size) >
 932                                         adapter->big_page_size) {
 933                         pagep = NULL;
 934                         page_info->last_page_user = true;
 935                 }
 936                 page_info = &page_info_tbl[rxq->head];
 937         }
 938         if (pagep)
 939                 page_info->last_page_user = true;
 940
 941         if (posted) {
 942                 atomic_add(posted, &rxq->used);
 943                 be_rxq_notify(adapter, rxq->id, posted);
 944         } else if (atomic_read(&rxq->used) == 0) {
 945                 /* Let be_worker replenish when memory is available */
 946                 adapter->rx_post_starved = true;
 947         }
 948
 949         return;
 950 }
 951
 952 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 953 {
 954         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 955
 956         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 957                 return NULL;
 958
 959         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 960
 961         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 962
 963         queue_tail_inc(tx_cq);
 964         return txcp;
 965 }
 966
 967 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 968 {
 969         struct be_queue_info *txq = &adapter->tx_obj.q;
 970         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 971         struct sk_buff *sent_skb;
 972         u16 cur_index, num_wrbs = 0;
 973
 974         cur_index = txq->tail;
 975         sent_skb = sent_skbs[cur_index];
 976         BUG_ON(!sent_skb);
 977         sent_skbs[cur_index] = NULL;
 978
 979         do {
 980                 cur_index = txq->tail;
 981                 num_wrbs++;
 982                 queue_tail_inc(txq);
 983         } while (cur_index != last_index);
 984
 985         atomic_sub(num_wrbs, &txq->used);
 986         skb_dma_unmap(&adapter->pdev->dev, sent_skb, DMA_TO_DEVICE);
 987         kfree_skb(sent_skb);
 988 }
 989
 990 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
 991 {
 992         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
 993
 994         if (!eqe->evt)
 995                 return NULL;
 996
 997         eqe->evt = le32_to_cpu(eqe->evt);
 998         queue_tail_inc(&eq_obj->q);
 999         return eqe;
1000 }
1001
1002 static int event_handle(struct be_adapter *adapter,
1003                         struct be_eq_obj *eq_obj)
1004 {
1005         struct be_eq_entry *eqe;
1006         u16 num = 0;
1007
1008         while ((eqe = event_get(eq_obj)) != NULL) {
1009                 eqe->evt = 0;
1010                 num++;
1011         }
1012
1013         /* Deal with any spurious interrupts that come
1014          * without events
1015          */
1016         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1017         if (num)
1018                 napi_schedule(&eq_obj->napi);
1019
1020         return num;
1021 }
1022
1023 /* Just read and notify events without processing them.
1024  * Used at the time of destroying event queues */
1025 static void be_eq_clean(struct be_adapter *adapter,
1026                         struct be_eq_obj *eq_obj)
1027 {
1028         struct be_eq_entry *eqe;
1029         u16 num = 0;
1030
1031         while ((eqe = event_get(eq_obj)) != NULL) {
1032                 eqe->evt = 0;
1033                 num++;
1034         }
1035
1036         if (num)
1037                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1038 }
1039
1040 static void be_rx_q_clean(struct be_adapter *adapter)
1041 {
1042         struct be_rx_page_info *page_info;
1043         struct be_queue_info *rxq = &adapter->rx_obj.q;
1044         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1045         struct be_eth_rx_compl *rxcp;
1046         u16 tail;
1047
1048         /* First cleanup pending rx completions */
1049         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1050                 be_rx_compl_discard(adapter, rxcp);
1051                 be_rx_compl_reset(rxcp);
1052                 be_cq_notify(adapter, rx_cq->id, true, 1);
1053         }
1054
1055         /* Then free posted rx buffer that were not used */
1056         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1057         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1058                 page_info = get_rx_page_info(adapter, tail);
1059                 put_page(page_info->page);
1060                 memset(page_info, 0, sizeof(*page_info));
1061         }
1062         BUG_ON(atomic_read(&rxq->used));
1063 }
1064
1065 static void be_tx_compl_clean(struct be_adapter *adapter)
1066 {
1067         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1068         struct be_queue_info *txq = &adapter->tx_obj.q;
1069         struct be_eth_tx_compl *txcp;
1070         u16 end_idx, cmpl = 0, timeo = 0;
1071
1072         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1073         do {
1074                 while ((txcp = be_tx_compl_get(tx_cq))) {
1075                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1076                                         wrb_index, txcp);
1077                         be_tx_compl_process(adapter, end_idx);
1078                         cmpl++;
1079                 }
1080                 if (cmpl) {
1081                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1082                         cmpl = 0;
1083                 }
1084
1085                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1086                         break;
1087
1088                 mdelay(1);
1089         } while (true);
1090
1091         if (atomic_read(&txq->used))
1092                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1093                         atomic_read(&txq->used));
1094 }
1095
1096 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1097 {
1098         struct be_queue_info *q;
1099
1100         q = &adapter->mcc_obj.q;
1101         if (q->created)
1102                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1103         be_queue_free(adapter, q);
1104
1105         q = &adapter->mcc_obj.cq;
1106         if (q->created)
1107                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1108         be_queue_free(adapter, q);
1109 }
1110
1111 /* Must be called only after TX qs are created as MCC shares TX EQ */
1112 static int be_mcc_queues_create(struct be_adapter *adapter)
1113 {
1114         struct be_queue_info *q, *cq;
1115
1116         /* Alloc MCC compl queue */
1117         cq = &adapter->mcc_obj.cq;
1118         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1119                         sizeof(struct be_mcc_compl)))
1120                 goto err;
1121
1122         /* Ask BE to create MCC compl queue; share TX's eq */
1123         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1124                 goto mcc_cq_free;
1125
1126         /* Alloc MCC queue */
1127         q = &adapter->mcc_obj.q;
1128         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1129                 goto mcc_cq_destroy;
1130
1131         /* Ask BE to create MCC queue */
1132         if (be_cmd_mccq_create(adapter, q, cq))
1133                 goto mcc_q_free;
1134
1135         return 0;
1136
1137 mcc_q_free:
1138         be_queue_free(adapter, q);
1139 mcc_cq_destroy:
1140         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1141 mcc_cq_free:
1142         be_queue_free(adapter, cq);
1143 err:
1144         return -1;
1145 }
1146
1147 static void be_tx_queues_destroy(struct be_adapter *adapter)
1148 {
1149         struct be_queue_info *q;
1150
1151         q = &adapter->tx_obj.q;
1152         if (q->created)
1153                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1154         be_queue_free(adapter, q);
1155
1156         q = &adapter->tx_obj.cq;
1157         if (q->created)
1158                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1159         be_queue_free(adapter, q);
1160
1161         /* Clear any residual events */
1162         be_eq_clean(adapter, &adapter->tx_eq);
1163
1164         q = &adapter->tx_eq.q;
1165         if (q->created)
1166                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1167         be_queue_free(adapter, q);
1168 }
1169
1170 static int be_tx_queues_create(struct be_adapter *adapter)
1171 {
1172         struct be_queue_info *eq, *q, *cq;
1173
1174         adapter->tx_eq.max_eqd = 0;
1175         adapter->tx_eq.min_eqd = 0;
1176         adapter->tx_eq.cur_eqd = 96;
1177         adapter->tx_eq.enable_aic = false;
1178         /* Alloc Tx Event queue */
1179         eq = &adapter->tx_eq.q;
1180         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1181                 return -1;
1182
1183         /* Ask BE to create Tx Event queue */
1184         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1185                 goto tx_eq_free;
1186         /* Alloc TX eth compl queue */
1187         cq = &adapter->tx_obj.cq;
1188         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1189                         sizeof(struct be_eth_tx_compl)))
1190                 goto tx_eq_destroy;
1191
1192         /* Ask BE to create Tx eth compl queue */
1193         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1194                 goto tx_cq_free;
1195
1196         /* Alloc TX eth queue */
1197         q = &adapter->tx_obj.q;
1198         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1199                 goto tx_cq_destroy;
1200
1201         /* Ask BE to create Tx eth queue */
1202         if (be_cmd_txq_create(adapter, q, cq))
1203                 goto tx_q_free;
1204         return 0;
1205
1206 tx_q_free:
1207         be_queue_free(adapter, q);
1208 tx_cq_destroy:
1209         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1210 tx_cq_free:
1211         be_queue_free(adapter, cq);
1212 tx_eq_destroy:
1213         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1214 tx_eq_free:
1215         be_queue_free(adapter, eq);
1216         return -1;
1217 }
1218
1219 static void be_rx_queues_destroy(struct be_adapter *adapter)
1220 {
1221         struct be_queue_info *q;
1222
1223         q = &adapter->rx_obj.q;
1224         if (q->created) {
1225                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1226                 be_rx_q_clean(adapter);
1227         }
1228         be_queue_free(adapter, q);
1229
1230         q = &adapter->rx_obj.cq;
1231         if (q->created)
1232                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1233         be_queue_free(adapter, q);
1234
1235         /* Clear any residual events */
1236         be_eq_clean(adapter, &adapter->rx_eq);
1237
1238         q = &adapter->rx_eq.q;
1239         if (q->created)
1240                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1241         be_queue_free(adapter, q);
1242 }
1243
1244 static int be_rx_queues_create(struct be_adapter *adapter)
1245 {
1246         struct be_queue_info *eq, *q, *cq;
1247         int rc;
1248
1249         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1250         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1251         adapter->rx_eq.min_eqd = 0;
1252         adapter->rx_eq.cur_eqd = 0;
1253         adapter->rx_eq.enable_aic = true;
1254
1255         /* Alloc Rx Event queue */
1256         eq = &adapter->rx_eq.q;
1257         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1258                                 sizeof(struct be_eq_entry));
1259         if (rc)
1260                 return rc;
1261
1262         /* Ask BE to create Rx Event queue */
1263         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1264         if (rc)
1265                 goto rx_eq_free;
1266
1267         /* Alloc RX eth compl queue */
1268         cq = &adapter->rx_obj.cq;
1269         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1270                         sizeof(struct be_eth_rx_compl));
1271         if (rc)
1272                 goto rx_eq_destroy;
1273
1274         /* Ask BE to create Rx eth compl queue */
1275         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1276         if (rc)
1277                 goto rx_cq_free;
1278
1279         /* Alloc RX eth queue */
1280         q = &adapter->rx_obj.q;
1281         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1282         if (rc)
1283                 goto rx_cq_destroy;
1284
1285         /* Ask BE to create Rx eth queue */
1286         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1287                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1288         if (rc)
1289                 goto rx_q_free;
1290
1291         return 0;
1292 rx_q_free:
1293         be_queue_free(adapter, q);
1294 rx_cq_destroy:
1295         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1296 rx_cq_free:
1297         be_queue_free(adapter, cq);
1298 rx_eq_destroy:
1299         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1300 rx_eq_free:
1301         be_queue_free(adapter, eq);
1302         return rc;
1303 }
1304
1305 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1306 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1307 {
1308         return eq_id - 8 * be_pci_func(adapter);
1309 }
1310
1311 static irqreturn_t be_intx(int irq, void *dev)
1312 {
1313         struct be_adapter *adapter = dev;
1314         int isr;
1315
1316         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1317                         be_pci_func(adapter) * CEV_ISR_SIZE);
1318         if (!isr)
1319                 return IRQ_NONE;
1320
1321         event_handle(adapter, &adapter->tx_eq);
1322         event_handle(adapter, &adapter->rx_eq);
1323
1324         return IRQ_HANDLED;
1325 }
1326
1327 static irqreturn_t be_msix_rx(int irq, void *dev)
1328 {
1329         struct be_adapter *adapter = dev;
1330
1331         event_handle(adapter, &adapter->rx_eq);
1332
1333         return IRQ_HANDLED;
1334 }
1335
1336 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1337 {
1338         struct be_adapter *adapter = dev;
1339
1340         event_handle(adapter, &adapter->tx_eq);
1341
1342         return IRQ_HANDLED;
1343 }
1344
1345 static inline bool do_gro(struct be_adapter *adapter,
1346                         struct be_eth_rx_compl *rxcp)
1347 {
1348         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1349         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1350
1351         if (err)
1352                 drvr_stats(adapter)->be_rxcp_err++;
1353
1354         return (tcp_frame && !err) ? true : false;
1355 }
1356
1357 int be_poll_rx(struct napi_struct *napi, int budget)
1358 {
1359         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1360         struct be_adapter *adapter =
1361                 container_of(rx_eq, struct be_adapter, rx_eq);
1362         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1363         struct be_eth_rx_compl *rxcp;
1364         u32 work_done;
1365
1366         for (work_done = 0; work_done < budget; work_done++) {
1367                 rxcp = be_rx_compl_get(adapter);
1368                 if (!rxcp)
1369                         break;
1370
1371                 if (do_gro(adapter, rxcp))
1372                         be_rx_compl_process_gro(adapter, rxcp);
1373                 else
1374                         be_rx_compl_process(adapter, rxcp);
1375
1376                 be_rx_compl_reset(rxcp);
1377         }
1378
1379         /* Refill the queue */
1380         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1381                 be_post_rx_frags(adapter);
1382
1383         /* All consumed */
1384         if (work_done < budget) {
1385                 napi_complete(napi);
1386                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1387         } else {
1388                 /* More to be consumed; continue with interrupts disabled */
1389                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1390         }
1391         return work_done;
1392 }
1393
1394 void be_process_tx(struct be_adapter *adapter)
1395 {
1396         struct be_queue_info *txq = &adapter->tx_obj.q;
1397         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1398         struct be_eth_tx_compl *txcp;
1399         u32 num_cmpl = 0;
1400         u16 end_idx;
1401
1402         while ((txcp = be_tx_compl_get(tx_cq))) {
1403                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1404                                         wrb_index, txcp);
1405                 be_tx_compl_process(adapter, end_idx);
1406                 num_cmpl++;
1407         }
1408
1409         if (num_cmpl) {
1410                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1411
1412                 /* As Tx wrbs have been freed up, wake up netdev queue if
1413                  * it was stopped due to lack of tx wrbs.
1414                  */
1415                 if (netif_queue_stopped(adapter->netdev) &&
1416                         atomic_read(&txq->used) < txq->len / 2) {
1417                         netif_wake_queue(adapter->netdev);
1418                 }
1419
1420                 drvr_stats(adapter)->be_tx_events++;
1421                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1422         }
1423 }
1424
1425 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1426  * For TX/MCC we don't honour budget; consume everything
1427  */
1428 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1429 {
1430         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1431         struct be_adapter *adapter =
1432                 container_of(tx_eq, struct be_adapter, tx_eq);
1433
1434         napi_complete(napi);
1435
1436         be_process_tx(adapter);
1437
1438         be_process_mcc(adapter);
1439
1440         return 1;
1441 }
1442
1443 static void be_worker(struct work_struct *work)
1444 {
1445         struct be_adapter *adapter =
1446                 container_of(work, struct be_adapter, work.work);
1447         int status;
1448
1449         /* Get Stats */
1450         status = be_cmd_get_stats(adapter, &adapter->stats.cmd);
1451         if (!status)
1452                 netdev_stats_update(adapter);
1453
1454         /* Set EQ delay */
1455         be_rx_eqd_update(adapter);
1456
1457         be_tx_rate_update(adapter);
1458         be_rx_rate_update(adapter);
1459
1460         if (adapter->rx_post_starved) {
1461                 adapter->rx_post_starved = false;
1462                 be_post_rx_frags(adapter);
1463         }
1464
1465         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1466 }
1467
1468 static void be_msix_enable(struct be_adapter *adapter)
1469 {
1470         int i, status;
1471
1472         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1473                 adapter->msix_entries[i].entry = i;
1474
1475         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1476                 BE_NUM_MSIX_VECTORS);
1477         if (status == 0)
1478                 adapter->msix_enabled = true;
1479         return;
1480 }
1481
1482 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1483 {
1484         return adapter->msix_entries[
1485                         be_evt_bit_get(adapter, eq_id)].vector;
1486 }
1487
1488 static int be_request_irq(struct be_adapter *adapter,
1489                 struct be_eq_obj *eq_obj,
1490                 void *handler, char *desc)
1491 {
1492         struct net_device *netdev = adapter->netdev;
1493         int vec;
1494
1495         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1496         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1497         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1498 }
1499
1500 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1501 {
1502         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1503         free_irq(vec, adapter);
1504 }
1505
1506 static int be_msix_register(struct be_adapter *adapter)
1507 {
1508         int status;
1509
1510         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1511         if (status)
1512                 goto err;
1513
1514         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1515         if (status)
1516                 goto free_tx_irq;
1517
1518         return 0;
1519
1520 free_tx_irq:
1521         be_free_irq(adapter, &adapter->tx_eq);
1522 err:
1523         dev_warn(&adapter->pdev->dev,
1524                 "MSIX Request IRQ failed - err %d\n", status);
1525         pci_disable_msix(adapter->pdev);
1526         adapter->msix_enabled = false;
1527         return status;
1528 }
1529
1530 static int be_irq_register(struct be_adapter *adapter)
1531 {
1532         struct net_device *netdev = adapter->netdev;
1533         int status;
1534
1535         if (adapter->msix_enabled) {
1536                 status = be_msix_register(adapter);
1537                 if (status == 0)
1538                         goto done;
1539         }
1540
1541         /* INTx */
1542         netdev->irq = adapter->pdev->irq;
1543         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1544                         adapter);
1545         if (status) {
1546                 dev_err(&adapter->pdev->dev,
1547                         "INTx request IRQ failed - err %d\n", status);
1548                 return status;
1549         }
1550 done:
1551         adapter->isr_registered = true;
1552         return 0;
1553 }
1554
1555 static void be_irq_unregister(struct be_adapter *adapter)
1556 {
1557         struct net_device *netdev = adapter->netdev;
1558
1559         if (!adapter->isr_registered)
1560                 return;
1561
1562         /* INTx */
1563         if (!adapter->msix_enabled) {
1564                 free_irq(netdev->irq, adapter);
1565                 goto done;
1566         }
1567
1568         /* MSIx */
1569         be_free_irq(adapter, &adapter->tx_eq);
1570         be_free_irq(adapter, &adapter->rx_eq);
1571 done:
1572         adapter->isr_registered = false;
1573         return;
1574 }
1575
1576 static int be_open(struct net_device *netdev)
1577 {
1578         struct be_adapter *adapter = netdev_priv(netdev);
1579         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1580         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1581         bool link_up;
1582         int status;
1583
1584         /* First time posting */
1585         be_post_rx_frags(adapter);
1586
1587         napi_enable(&rx_eq->napi);
1588         napi_enable(&tx_eq->napi);
1589
1590         be_irq_register(adapter);
1591
1592         be_intr_set(adapter, true);
1593
1594         /* The evt queues are created in unarmed state; arm them */
1595         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1596         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1597
1598         /* Rx compl queue may be in unarmed state; rearm it */
1599         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1600
1601         status = be_cmd_link_status_query(adapter, &link_up);
1602         if (status)
1603                 return status;
1604         be_link_status_update(adapter, link_up);
1605
1606         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1607         return 0;
1608 }
1609
1610 static int be_setup(struct be_adapter *adapter)
1611 {
1612         struct net_device *netdev = adapter->netdev;
1613         u32 if_flags;
1614         int status;
1615
1616         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1617                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1618                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1619         status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr,
1620                         false/* pmac_invalid */, &adapter->if_handle,
1621                         &adapter->pmac_id);
1622         if (status != 0)
1623                 goto do_none;
1624
1625         be_vid_config(netdev);
1626
1627         status = be_cmd_set_flow_control(adapter, true, true);
1628         if (status != 0)
1629                 goto if_destroy;
1630
1631         status = be_tx_queues_create(adapter);
1632         if (status != 0)
1633                 goto if_destroy;
1634
1635         status = be_rx_queues_create(adapter);
1636         if (status != 0)
1637                 goto tx_qs_destroy;
1638
1639         status = be_mcc_queues_create(adapter);
1640         if (status != 0)
1641                 goto rx_qs_destroy;
1642
1643         return 0;
1644
1645 rx_qs_destroy:
1646         be_rx_queues_destroy(adapter);
1647 tx_qs_destroy:
1648         be_tx_queues_destroy(adapter);
1649 if_destroy:
1650         be_cmd_if_destroy(adapter, adapter->if_handle);
1651 do_none:
1652         return status;
1653 }
1654
1655 static int be_clear(struct be_adapter *adapter)
1656 {
1657         be_mcc_queues_destroy(adapter);
1658         be_rx_queues_destroy(adapter);
1659         be_tx_queues_destroy(adapter);
1660
1661         be_cmd_if_destroy(adapter, adapter->if_handle);
1662
1663         return 0;
1664 }
1665
1666 static int be_close(struct net_device *netdev)
1667 {
1668         struct be_adapter *adapter = netdev_priv(netdev);
1669         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1670         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1671         int vec;
1672
1673         cancel_delayed_work_sync(&adapter->work);
1674
1675         netif_stop_queue(netdev);
1676         netif_carrier_off(netdev);
1677         adapter->link_up = false;
1678
1679         be_intr_set(adapter, false);
1680
1681         if (adapter->msix_enabled) {
1682                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1683                 synchronize_irq(vec);
1684                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1685                 synchronize_irq(vec);
1686         } else {
1687                 synchronize_irq(netdev->irq);
1688         }
1689         be_irq_unregister(adapter);
1690
1691         napi_disable(&rx_eq->napi);
1692         napi_disable(&tx_eq->napi);
1693
1694         /* Wait for all pending tx completions to arrive so that
1695          * all tx skbs are freed.
1696          */
1697         be_tx_compl_clean(adapter);
1698
1699         return 0;
1700 }
1701
1702 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1703 char flash_cookie[2][16] =      {"*** SE FLAS",
1704                                 "H DIRECTORY *** "};
1705 static int be_flash_image(struct be_adapter *adapter,
1706                         const struct firmware *fw,
1707                         struct be_dma_mem *flash_cmd, u32 flash_type)
1708 {
1709         int status;
1710         u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1711         int num_bytes;
1712         const u8 *p = fw->data;
1713         struct be_cmd_write_flashrom *req = flash_cmd->va;
1714
1715         switch (flash_type) {
1716         case FLASHROM_TYPE_ISCSI_ACTIVE:
1717                 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1718                 image_size = FLASH_IMAGE_MAX_SIZE;
1719                 break;
1720         case FLASHROM_TYPE_ISCSI_BACKUP:
1721                 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1722                 image_size = FLASH_IMAGE_MAX_SIZE;
1723                 break;
1724         case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1725                 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1726                 image_size = FLASH_IMAGE_MAX_SIZE;
1727                 break;
1728         case FLASHROM_TYPE_FCOE_FW_BACKUP:
1729                 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1730                 image_size = FLASH_IMAGE_MAX_SIZE;
1731                 break;
1732         case FLASHROM_TYPE_BIOS:
1733                 image_offset = FLASH_iSCSI_BIOS_START;
1734                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1735                 break;
1736         case FLASHROM_TYPE_FCOE_BIOS:
1737                 image_offset = FLASH_FCoE_BIOS_START;
1738                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1739                 break;
1740         case FLASHROM_TYPE_PXE_BIOS:
1741                 image_offset = FLASH_PXE_BIOS_START;
1742                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1743                 break;
1744         default:
1745                 return 0;
1746         }
1747
1748         p += sizeof(struct flash_file_hdr) + image_offset;
1749         if (p + image_size > fw->data + fw->size)
1750                 return -1;
1751
1752         total_bytes = image_size;
1753
1754         while (total_bytes) {
1755                 if (total_bytes > 32*1024)
1756                         num_bytes = 32*1024;
1757                 else
1758                         num_bytes = total_bytes;
1759                 total_bytes -= num_bytes;
1760
1761                 if (!total_bytes)
1762                         flash_op = FLASHROM_OPER_FLASH;
1763                 else
1764                         flash_op = FLASHROM_OPER_SAVE;
1765                 memcpy(req->params.data_buf, p, num_bytes);
1766                 p += num_bytes;
1767                 status = be_cmd_write_flashrom(adapter, flash_cmd,
1768                                 flash_type, flash_op, num_bytes);
1769                 if (status) {
1770                         dev_err(&adapter->pdev->dev,
1771                         "cmd to write to flash rom failed. type/op %d/%d\n",
1772                         flash_type, flash_op);
1773                         return -1;
1774                 }
1775                 yield();
1776         }
1777
1778         return 0;
1779 }
1780
1781 int be_load_fw(struct be_adapter *adapter, u8 *func)
1782 {
1783         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1784         const struct firmware *fw;
1785         struct flash_file_hdr *fhdr;
1786         struct flash_section_info *fsec = NULL;
1787         struct be_dma_mem flash_cmd;
1788         int status;
1789         const u8 *p;
1790         bool entry_found = false;
1791         int flash_type;
1792         char fw_ver[FW_VER_LEN];
1793         char fw_cfg;
1794
1795         status = be_cmd_get_fw_ver(adapter, fw_ver);
1796         if (status)
1797                 return status;
1798
1799         fw_cfg = *(fw_ver + 2);
1800         if (fw_cfg == '0')
1801                 fw_cfg = '1';
1802         strcpy(fw_file, func);
1803
1804         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1805         if (status)
1806                 goto fw_exit;
1807
1808         p = fw->data;
1809         fhdr = (struct flash_file_hdr *) p;
1810         if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1811                 dev_err(&adapter->pdev->dev,
1812                         "Firmware(%s) load error (signature did not match)\n",
1813                                 fw_file);
1814                 status = -1;
1815                 goto fw_exit;
1816         }
1817
1818         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1819
1820         p += sizeof(struct flash_file_hdr);
1821         while (p < (fw->data + fw->size)) {
1822                 fsec = (struct flash_section_info *)p;
1823                 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1824                         entry_found = true;
1825                         break;
1826                 }
1827                 p += 32;
1828         }
1829
1830         if (!entry_found) {
1831                 status = -1;
1832                 dev_err(&adapter->pdev->dev,
1833                         "Flash cookie not found in firmware image\n");
1834                 goto fw_exit;
1835         }
1836
1837         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1838         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1839                                         &flash_cmd.dma);
1840         if (!flash_cmd.va) {
1841                 status = -ENOMEM;
1842                 dev_err(&adapter->pdev->dev,
1843                         "Memory allocation failure while flashing\n");
1844                 goto fw_exit;
1845         }
1846
1847         for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1848                 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1849                 status = be_flash_image(adapter, fw, &flash_cmd,
1850                                 flash_type);
1851                 if (status)
1852                         break;
1853         }
1854
1855         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1856                                 flash_cmd.dma);
1857         if (status) {
1858                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1859                 goto fw_exit;
1860         }
1861
1862         dev_info(&adapter->pdev->dev, "Firmware flashed succesfully\n");
1863
1864 fw_exit:
1865         release_firmware(fw);
1866         return status;
1867 }
1868
1869 static struct net_device_ops be_netdev_ops = {
1870         .ndo_open               = be_open,
1871         .ndo_stop               = be_close,
1872         .ndo_start_xmit         = be_xmit,
1873         .ndo_get_stats          = be_get_stats,
1874         .ndo_set_rx_mode        = be_set_multicast_list,
1875         .ndo_set_mac_address    = be_mac_addr_set,
1876         .ndo_change_mtu         = be_change_mtu,
1877         .ndo_validate_addr      = eth_validate_addr,
1878         .ndo_vlan_rx_register   = be_vlan_register,
1879         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1880         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1881 };
1882
1883 static void be_netdev_init(struct net_device *netdev)
1884 {
1885         struct be_adapter *adapter = netdev_priv(netdev);
1886
1887         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1888                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1889                 NETIF_F_IPV6_CSUM | NETIF_F_GRO;
1890
1891         netdev->flags |= IFF_MULTICAST;
1892
1893         adapter->rx_csum = true;
1894
1895         netif_set_gso_max_size(netdev, 65535);
1896
1897         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1898
1899         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1900
1901         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1902                 BE_NAPI_WEIGHT);
1903         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1904                 BE_NAPI_WEIGHT);
1905
1906         netif_carrier_off(netdev);
1907         netif_stop_queue(netdev);
1908 }
1909
1910 static void be_unmap_pci_bars(struct be_adapter *adapter)
1911 {
1912         if (adapter->csr)
1913                 iounmap(adapter->csr);
1914         if (adapter->db)
1915                 iounmap(adapter->db);
1916         if (adapter->pcicfg)
1917                 iounmap(adapter->pcicfg);
1918 }
1919
1920 static int be_map_pci_bars(struct be_adapter *adapter)
1921 {
1922         u8 __iomem *addr;
1923
1924         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1925                         pci_resource_len(adapter->pdev, 2));
1926         if (addr == NULL)
1927                 return -ENOMEM;
1928         adapter->csr = addr;
1929
1930         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1931                         128 * 1024);
1932         if (addr == NULL)
1933                 goto pci_map_err;
1934         adapter->db = addr;
1935
1936         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1937                         pci_resource_len(adapter->pdev, 1));
1938         if (addr == NULL)
1939                 goto pci_map_err;
1940         adapter->pcicfg = addr;
1941
1942         return 0;
1943 pci_map_err:
1944         be_unmap_pci_bars(adapter);
1945         return -ENOMEM;
1946 }
1947
1948
1949 static void be_ctrl_cleanup(struct be_adapter *adapter)
1950 {
1951         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1952
1953         be_unmap_pci_bars(adapter);
1954
1955         if (mem->va)
1956                 pci_free_consistent(adapter->pdev, mem->size,
1957                         mem->va, mem->dma);
1958 }
1959
1960 static int be_ctrl_init(struct be_adapter *adapter)
1961 {
1962         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1963         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1964         int status;
1965
1966         status = be_map_pci_bars(adapter);
1967         if (status)
1968                 return status;
1969
1970         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1971         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1972                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1973         if (!mbox_mem_alloc->va) {
1974                 be_unmap_pci_bars(adapter);
1975                 return -1;
1976         }
1977         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1978         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1979         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1980         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1981         spin_lock_init(&adapter->mbox_lock);
1982         spin_lock_init(&adapter->mcc_lock);
1983         spin_lock_init(&adapter->mcc_cq_lock);
1984
1985         return 0;
1986 }
1987
1988 static void be_stats_cleanup(struct be_adapter *adapter)
1989 {
1990         struct be_stats_obj *stats = &adapter->stats;
1991         struct be_dma_mem *cmd = &stats->cmd;
1992
1993         if (cmd->va)
1994                 pci_free_consistent(adapter->pdev, cmd->size,
1995                         cmd->va, cmd->dma);
1996 }
1997
1998 static int be_stats_init(struct be_adapter *adapter)
1999 {
2000         struct be_stats_obj *stats = &adapter->stats;
2001         struct be_dma_mem *cmd = &stats->cmd;
2002
2003         cmd->size = sizeof(struct be_cmd_req_get_stats);
2004         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2005         if (cmd->va == NULL)
2006                 return -1;
2007         return 0;
2008 }
2009
2010 static void __devexit be_remove(struct pci_dev *pdev)
2011 {
2012         struct be_adapter *adapter = pci_get_drvdata(pdev);
2013         if (!adapter)
2014                 return;
2015
2016         unregister_netdev(adapter->netdev);
2017
2018         be_clear(adapter);
2019
2020         be_stats_cleanup(adapter);
2021
2022         be_ctrl_cleanup(adapter);
2023
2024         if (adapter->msix_enabled) {
2025                 pci_disable_msix(adapter->pdev);
2026                 adapter->msix_enabled = false;
2027         }
2028
2029         pci_set_drvdata(pdev, NULL);
2030         pci_release_regions(pdev);
2031         pci_disable_device(pdev);
2032
2033         free_netdev(adapter->netdev);
2034 }
2035
2036 static int be_hw_up(struct be_adapter *adapter)
2037 {
2038         int status;
2039
2040         status = be_cmd_POST(adapter);
2041         if (status)
2042                 return status;
2043
2044         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2045         if (status)
2046                 return status;
2047
2048         status = be_cmd_query_fw_cfg(adapter, &adapter->port_num);
2049         return status;
2050 }
2051
2052 static int __devinit be_probe(struct pci_dev *pdev,
2053                         const struct pci_device_id *pdev_id)
2054 {
2055         int status = 0;
2056         struct be_adapter *adapter;
2057         struct net_device *netdev;
2058         u8 mac[ETH_ALEN];
2059
2060         status = pci_enable_device(pdev);
2061         if (status)
2062                 goto do_none;
2063
2064         status = pci_request_regions(pdev, DRV_NAME);
2065         if (status)
2066                 goto disable_dev;
2067         pci_set_master(pdev);
2068
2069         netdev = alloc_etherdev(sizeof(struct be_adapter));
2070         if (netdev == NULL) {
2071                 status = -ENOMEM;
2072                 goto rel_reg;
2073         }
2074         adapter = netdev_priv(netdev);
2075         adapter->pdev = pdev;
2076         pci_set_drvdata(pdev, adapter);
2077         adapter->netdev = netdev;
2078
2079         be_msix_enable(adapter);
2080
2081         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2082         if (!status) {
2083                 netdev->features |= NETIF_F_HIGHDMA;
2084         } else {
2085                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2086                 if (status) {
2087                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2088                         goto free_netdev;
2089                 }
2090         }
2091
2092         status = be_ctrl_init(adapter);
2093         if (status)
2094                 goto free_netdev;
2095
2096         status = be_cmd_reset_function(adapter);
2097         if (status)
2098                 goto ctrl_clean;
2099
2100         status = be_stats_init(adapter);
2101         if (status)
2102                 goto ctrl_clean;
2103
2104         status = be_hw_up(adapter);
2105         if (status)
2106                 goto stats_clean;
2107
2108         status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
2109                         true /* permanent */, 0);
2110         if (status)
2111                 goto stats_clean;
2112         memcpy(netdev->dev_addr, mac, ETH_ALEN);
2113
2114         INIT_DELAYED_WORK(&adapter->work, be_worker);
2115         be_netdev_init(netdev);
2116         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
2117
2118         status = be_setup(adapter);
2119         if (status)
2120                 goto stats_clean;
2121         status = register_netdev(netdev);
2122         if (status != 0)
2123                 goto unsetup;
2124
2125         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2126         return 0;
2127
2128 unsetup:
2129         be_clear(adapter);
2130 stats_clean:
2131         be_stats_cleanup(adapter);
2132 ctrl_clean:
2133         be_ctrl_cleanup(adapter);
2134 free_netdev:
2135         free_netdev(adapter->netdev);
2136 rel_reg:
2137         pci_release_regions(pdev);
2138 disable_dev:
2139         pci_disable_device(pdev);
2140 do_none:
2141         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2142         return status;
2143 }
2144
2145 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2146 {
2147         struct be_adapter *adapter = pci_get_drvdata(pdev);
2148         struct net_device *netdev =  adapter->netdev;
2149
2150         netif_device_detach(netdev);
2151         if (netif_running(netdev)) {
2152                 rtnl_lock();
2153                 be_close(netdev);
2154                 rtnl_unlock();
2155         }
2156         be_clear(adapter);
2157
2158         pci_save_state(pdev);
2159         pci_disable_device(pdev);
2160         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2161         return 0;
2162 }
2163
2164 static int be_resume(struct pci_dev *pdev)
2165 {
2166         int status = 0;
2167         struct be_adapter *adapter = pci_get_drvdata(pdev);
2168         struct net_device *netdev =  adapter->netdev;
2169
2170         netif_device_detach(netdev);
2171
2172         status = pci_enable_device(pdev);
2173         if (status)
2174                 return status;
2175
2176         pci_set_power_state(pdev, 0);
2177         pci_restore_state(pdev);
2178
2179         be_setup(adapter);
2180         if (netif_running(netdev)) {
2181                 rtnl_lock();
2182                 be_open(netdev);
2183                 rtnl_unlock();
2184         }
2185         netif_device_attach(netdev);
2186         return 0;
2187 }
2188
2189 static struct pci_driver be_driver = {
2190         .name = DRV_NAME,
2191         .id_table = be_dev_ids,
2192         .probe = be_probe,
2193         .remove = be_remove,
2194         .suspend = be_suspend,
2195         .resume = be_resume
2196 };
2197
2198 static int __init be_init_module(void)
2199 {
2200         if (rx_frag_size != 8192 && rx_frag_size != 4096
2201                 && rx_frag_size != 2048) {
2202                 printk(KERN_WARNING DRV_NAME
2203                         " : Module param rx_frag_size must be 2048/4096/8192."
2204                         " Using 2048\n");
2205                 rx_frag_size = 2048;
2206         }
2207
2208         return pci_register_driver(&be_driver);
2209 }
2210 module_init(be_init_module);
2211
2212 static void __exit be_exit_module(void)
2213 {
2214         pci_unregister_driver(&be_driver);
2215 }
2216 module_exit(be_exit_module);