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, BE_DEVICE_ID2) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  37         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
  38         { 0 }
  39 };
  40 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  41
  42 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  43 {
  44         struct be_dma_mem *mem = &q->dma_mem;
  45         if (mem->va)
  46                 pci_free_consistent(adapter->pdev, mem->size,
  47                         mem->va, mem->dma);
  48 }
  49
  50 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  51                 u16 len, u16 entry_size)
  52 {
  53         struct be_dma_mem *mem = &q->dma_mem;
  54
  55         memset(q, 0, sizeof(*q));
  56         q->len = len;
  57         q->entry_size = entry_size;
  58         mem->size = len * entry_size;
  59         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  60         if (!mem->va)
  61                 return -1;
  62         memset(mem->va, 0, mem->size);
  63         return 0;
  64 }
  65
  66 static void be_intr_set(struct be_adapter *adapter, bool enable)
  67 {
  68         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  69         u32 reg = ioread32(addr);
  70         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  71
  72         if (!enabled && enable)
  73                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  74         else if (enabled && !enable)
  75                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  76         else
  77                 return;
  78
  79         iowrite32(reg, addr);
  80 }
  81
  82 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  83 {
  84         u32 val = 0;
  85         val |= qid & DB_RQ_RING_ID_MASK;
  86         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  87         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  88 }
  89
  90 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  91 {
  92         u32 val = 0;
  93         val |= qid & DB_TXULP_RING_ID_MASK;
  94         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  95         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  96 }
  97
  98 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  99                 bool arm, bool clear_int, u16 num_popped)
 100 {
 101         u32 val = 0;
 102         val |= qid & DB_EQ_RING_ID_MASK;
 103         if (arm)
 104                 val |= 1 << DB_EQ_REARM_SHIFT;
 105         if (clear_int)
 106                 val |= 1 << DB_EQ_CLR_SHIFT;
 107         val |= 1 << DB_EQ_EVNT_SHIFT;
 108         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 109         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 110 }
 111
 112 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 113 {
 114         u32 val = 0;
 115         val |= qid & DB_CQ_RING_ID_MASK;
 116         if (arm)
 117                 val |= 1 << DB_CQ_REARM_SHIFT;
 118         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 119         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 120 }
 121
 122 static int be_mac_addr_set(struct net_device *netdev, void *p)
 123 {
 124         struct be_adapter *adapter = netdev_priv(netdev);
 125         struct sockaddr *addr = p;
 126         int status = 0;
 127
 128         if (!is_valid_ether_addr(addr->sa_data))
 129                 return -EADDRNOTAVAIL;
 130
 131         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 132         if (status)
 133                 return status;
 134
 135         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 136                         adapter->if_handle, &adapter->pmac_id);
 137         if (!status)
 138                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 139
 140         return status;
 141 }
 142
 143 void netdev_stats_update(struct be_adapter *adapter)
 144 {
 145         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 146         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 147         struct be_port_rxf_stats *port_stats =
 148                         &rxf_stats->port[adapter->port_num];
 149         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 150         struct be_erx_stats *erx_stats = &hw_stats->erx;
 151
 152         dev_stats->rx_packets = port_stats->rx_total_frames;
 153         dev_stats->tx_packets = port_stats->tx_unicastframes +
 154                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 155         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 156                                 (u64) port_stats->rx_bytes_lsd;
 157         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 158                                 (u64) port_stats->tx_bytes_lsd;
 159
 160         /* bad pkts received */
 161         dev_stats->rx_errors = port_stats->rx_crc_errors +
 162                 port_stats->rx_alignment_symbol_errors +
 163                 port_stats->rx_in_range_errors +
 164                 port_stats->rx_out_range_errors +
 165                 port_stats->rx_frame_too_long +
 166                 port_stats->rx_dropped_too_small +
 167                 port_stats->rx_dropped_too_short +
 168                 port_stats->rx_dropped_header_too_small +
 169                 port_stats->rx_dropped_tcp_length +
 170                 port_stats->rx_dropped_runt +
 171                 port_stats->rx_tcp_checksum_errs +
 172                 port_stats->rx_ip_checksum_errs +
 173                 port_stats->rx_udp_checksum_errs;
 174
 175         /*  no space in linux buffers: best possible approximation */
 176         dev_stats->rx_dropped =
 177                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 178
 179         /* detailed rx errors */
 180         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 181                 port_stats->rx_out_range_errors +
 182                 port_stats->rx_frame_too_long;
 183
 184         /* receive ring buffer overflow */
 185         dev_stats->rx_over_errors = 0;
 186
 187         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 188
 189         /* frame alignment errors */
 190         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 191
 192         /* receiver fifo overrun */
 193         /* drops_no_pbuf is no per i/f, it's per BE card */
 194         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 195                                         port_stats->rx_input_fifo_overflow +
 196                                         rxf_stats->rx_drops_no_pbuf;
 197         /* receiver missed packetd */
 198         dev_stats->rx_missed_errors = 0;
 199
 200         /*  packet transmit problems */
 201         dev_stats->tx_errors = 0;
 202
 203         /* no space available in linux */
 204         dev_stats->tx_dropped = 0;
 205
 206         dev_stats->multicast = port_stats->rx_multicast_frames;
 207         dev_stats->collisions = 0;
 208
 209         /* detailed tx_errors */
 210         dev_stats->tx_aborted_errors = 0;
 211         dev_stats->tx_carrier_errors = 0;
 212         dev_stats->tx_fifo_errors = 0;
 213         dev_stats->tx_heartbeat_errors = 0;
 214         dev_stats->tx_window_errors = 0;
 215 }
 216
 217 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 218 {
 219         struct net_device *netdev = adapter->netdev;
 220
 221         /* If link came up or went down */
 222         if (adapter->link_up != link_up) {
 223                 adapter->link_speed = -1;
 224                 if (link_up) {
 225                         netif_start_queue(netdev);
 226                         netif_carrier_on(netdev);
 227                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 228                 } else {
 229                         netif_stop_queue(netdev);
 230                         netif_carrier_off(netdev);
 231                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 232                 }
 233                 adapter->link_up = link_up;
 234         }
 235 }
 236
 237 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 238 static void be_rx_eqd_update(struct be_adapter *adapter)
 239 {
 240         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 241         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 242         ulong now = jiffies;
 243         u32 eqd;
 244
 245         if (!rx_eq->enable_aic)
 246                 return;
 247
 248         /* Wrapped around */
 249         if (time_before(now, stats->rx_fps_jiffies)) {
 250                 stats->rx_fps_jiffies = now;
 251                 return;
 252         }
 253
 254         /* Update once a second */
 255         if ((now - stats->rx_fps_jiffies) < HZ)
 256                 return;
 257
 258         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 259                         ((now - stats->rx_fps_jiffies) / HZ);
 260
 261         stats->rx_fps_jiffies = now;
 262         stats->be_prev_rx_frags = stats->be_rx_frags;
 263         eqd = stats->be_rx_fps / 110000;
 264         eqd = eqd << 3;
 265         if (eqd > rx_eq->max_eqd)
 266                 eqd = rx_eq->max_eqd;
 267         if (eqd < rx_eq->min_eqd)
 268                 eqd = rx_eq->min_eqd;
 269         if (eqd < 10)
 270                 eqd = 0;
 271         if (eqd != rx_eq->cur_eqd)
 272                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 273
 274         rx_eq->cur_eqd = eqd;
 275 }
 276
 277 static struct net_device_stats *be_get_stats(struct net_device *dev)
 278 {
 279         return &dev->stats;
 280 }
 281
 282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 283 {
 284         u64 rate = bytes;
 285
 286         do_div(rate, ticks / HZ);
 287         rate <<= 3;                     /* bytes/sec -> bits/sec */
 288         do_div(rate, 1000000ul);        /* MB/Sec */
 289
 290         return rate;
 291 }
 292
 293 static void be_tx_rate_update(struct be_adapter *adapter)
 294 {
 295         struct be_drvr_stats *stats = drvr_stats(adapter);
 296         ulong now = jiffies;
 297
 298         /* Wrapped around? */
 299         if (time_before(now, stats->be_tx_jiffies)) {
 300                 stats->be_tx_jiffies = now;
 301                 return;
 302         }
 303
 304         /* Update tx rate once in two seconds */
 305         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 306                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 307                                                   - stats->be_tx_bytes_prev,
 308                                                  now - stats->be_tx_jiffies);
 309                 stats->be_tx_jiffies = now;
 310                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 311         }
 312 }
 313
 314 static void be_tx_stats_update(struct be_adapter *adapter,
 315                         u32 wrb_cnt, u32 copied, bool stopped)
 316 {
 317         struct be_drvr_stats *stats = drvr_stats(adapter);
 318         stats->be_tx_reqs++;
 319         stats->be_tx_wrbs += wrb_cnt;
 320         stats->be_tx_bytes += copied;
 321         if (stopped)
 322                 stats->be_tx_stops++;
 323 }
 324
 325 /* Determine number of WRB entries needed to xmit data in an skb */
 326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 327 {
 328         int cnt = (skb->len > skb->data_len);
 329
 330         cnt += skb_shinfo(skb)->nr_frags;
 331
 332         /* to account for hdr wrb */
 333         cnt++;
 334         if (cnt & 1) {
 335                 /* add a dummy to make it an even num */
 336                 cnt++;
 337                 *dummy = true;
 338         } else
 339                 *dummy = false;
 340         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 341         return cnt;
 342 }
 343
 344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 345 {
 346         wrb->frag_pa_hi = upper_32_bits(addr);
 347         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 348         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 349 }
 350
 351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 352                 bool vlan, u32 wrb_cnt, u32 len)
 353 {
 354         memset(hdr, 0, sizeof(*hdr));
 355
 356         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 357
 358         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 359                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 360                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 361                         hdr, skb_shinfo(skb)->gso_size);
 362         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 363                 if (is_tcp_pkt(skb))
 364                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 365                 else if (is_udp_pkt(skb))
 366                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 367         }
 368
 369         if (vlan && vlan_tx_tag_present(skb)) {
 370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 371                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 372                         hdr, vlan_tx_tag_get(skb));
 373         }
 374
 375         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 376         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 377         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 378         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 379 }
 380
 381
 382 static int make_tx_wrbs(struct be_adapter *adapter,
 383                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 384 {
 385         u64 busaddr;
 386         u32 i, copied = 0;
 387         struct pci_dev *pdev = adapter->pdev;
 388         struct sk_buff *first_skb = skb;
 389         struct be_queue_info *txq = &adapter->tx_obj.q;
 390         struct be_eth_wrb *wrb;
 391         struct be_eth_hdr_wrb *hdr;
 392
 393         hdr = queue_head_node(txq);
 394         atomic_add(wrb_cnt, &txq->used);
 395         queue_head_inc(txq);
 396
 397         if (skb->len > skb->data_len) {
 398                 int len = skb->len - skb->data_len;
 399                 busaddr = pci_map_single(pdev, skb->data, len,
 400                                          PCI_DMA_TODEVICE);
 401                 wrb = queue_head_node(txq);
 402                 wrb_fill(wrb, busaddr, len);
 403                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 404                 queue_head_inc(txq);
 405                 copied += len;
 406         }
 407
 408         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 409                 struct skb_frag_struct *frag =
 410                         &skb_shinfo(skb)->frags[i];
 411                 busaddr = pci_map_page(pdev, frag->page,
 412                                        frag->page_offset,
 413                                        frag->size, PCI_DMA_TODEVICE);
 414                 wrb = queue_head_node(txq);
 415                 wrb_fill(wrb, busaddr, frag->size);
 416                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 417                 queue_head_inc(txq);
 418                 copied += frag->size;
 419         }
 420
 421         if (dummy_wrb) {
 422                 wrb = queue_head_node(txq);
 423                 wrb_fill(wrb, 0, 0);
 424                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 425                 queue_head_inc(txq);
 426         }
 427
 428         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 429                 wrb_cnt, copied);
 430         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 431
 432         return copied;
 433 }
 434
 435 static netdev_tx_t be_xmit(struct sk_buff *skb,
 436                         struct net_device *netdev)
 437 {
 438         struct be_adapter *adapter = netdev_priv(netdev);
 439         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 440         struct be_queue_info *txq = &tx_obj->q;
 441         u32 wrb_cnt = 0, copied = 0;
 442         u32 start = txq->head;
 443         bool dummy_wrb, stopped = false;
 444
 445         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 446
 447         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 448         if (copied) {
 449                 /* record the sent skb in the sent_skb table */
 450                 BUG_ON(tx_obj->sent_skb_list[start]);
 451                 tx_obj->sent_skb_list[start] = skb;
 452
 453                 /* Ensure txq has space for the next skb; Else stop the queue
 454                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 455                  * tx compls of the current transmit which'll wake up the queue
 456                  */
 457                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 458                                                                 txq->len) {
 459                         netif_stop_queue(netdev);
 460                         stopped = true;
 461                 }
 462
 463                 be_txq_notify(adapter, txq->id, wrb_cnt);
 464
 465                 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 466         } else {
 467                 txq->head = start;
 468                 dev_kfree_skb_any(skb);
 469         }
 470         return NETDEV_TX_OK;
 471 }
 472
 473 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 474 {
 475         struct be_adapter *adapter = netdev_priv(netdev);
 476         if (new_mtu < BE_MIN_MTU ||
 477                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 478                 dev_info(&adapter->pdev->dev,
 479                         "MTU must be between %d and %d bytes\n",
 480                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 481                 return -EINVAL;
 482         }
 483         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 484                         netdev->mtu, new_mtu);
 485         netdev->mtu = new_mtu;
 486         return 0;
 487 }
 488
 489 /*
 490  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 491  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 492  * set the BE in promiscuous VLAN mode.
 493  */
 494 static int be_vid_config(struct be_adapter *adapter)
 495 {
 496         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 497         u16 ntags = 0, i;
 498         int status;
 499
 500         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 501                 /* Construct VLAN Table to give to HW */
 502                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 503                         if (adapter->vlan_tag[i]) {
 504                                 vtag[ntags] = cpu_to_le16(i);
 505                                 ntags++;
 506                         }
 507                 }
 508                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 509                                         vtag, ntags, 1, 0);
 510         } else {
 511                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 512                                         NULL, 0, 1, 1);
 513         }
 514         return status;
 515 }
 516
 517 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 518 {
 519         struct be_adapter *adapter = netdev_priv(netdev);
 520         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 521         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 522
 523         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 524         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 525         adapter->vlan_grp = grp;
 526         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 527         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 528 }
 529
 530 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 531 {
 532         struct be_adapter *adapter = netdev_priv(netdev);
 533
 534         adapter->num_vlans++;
 535         adapter->vlan_tag[vid] = 1;
 536
 537         be_vid_config(adapter);
 538 }
 539
 540 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 541 {
 542         struct be_adapter *adapter = netdev_priv(netdev);
 543
 544         adapter->num_vlans--;
 545         adapter->vlan_tag[vid] = 0;
 546
 547         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 548         be_vid_config(adapter);
 549 }
 550
 551 static void be_set_multicast_list(struct net_device *netdev)
 552 {
 553         struct be_adapter *adapter = netdev_priv(netdev);
 554
 555         if (netdev->flags & IFF_PROMISC) {
 556                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 557                 adapter->promiscuous = true;
 558                 goto done;
 559         }
 560
 561         /* BE was previously in promiscous mode; disable it */
 562         if (adapter->promiscuous) {
 563                 adapter->promiscuous = false;
 564                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 565         }
 566
 567         /* Enable multicast promisc if num configured exceeds what we support */
 568         if (netdev->flags & IFF_ALLMULTI ||
 569             netdev_mc_count(netdev) > BE_MAX_MC) {
 570                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
 571                                 &adapter->mc_cmd_mem);
 572                 goto done;
 573         }
 574
 575         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 576                 netdev_mc_count(netdev), &adapter->mc_cmd_mem);
 577 done:
 578         return;
 579 }
 580
 581 static void be_rx_rate_update(struct be_adapter *adapter)
 582 {
 583         struct be_drvr_stats *stats = drvr_stats(adapter);
 584         ulong now = jiffies;
 585
 586         /* Wrapped around */
 587         if (time_before(now, stats->be_rx_jiffies)) {
 588                 stats->be_rx_jiffies = now;
 589                 return;
 590         }
 591
 592         /* Update the rate once in two seconds */
 593         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 594                 return;
 595
 596         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 597                                           - stats->be_rx_bytes_prev,
 598                                          now - stats->be_rx_jiffies);
 599         stats->be_rx_jiffies = now;
 600         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 601 }
 602
 603 static void be_rx_stats_update(struct be_adapter *adapter,
 604                 u32 pktsize, u16 numfrags)
 605 {
 606         struct be_drvr_stats *stats = drvr_stats(adapter);
 607
 608         stats->be_rx_compl++;
 609         stats->be_rx_frags += numfrags;
 610         stats->be_rx_bytes += pktsize;
 611 }
 612
 613 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 614 {
 615         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 616
 617         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 618         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 619         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 620         if (ip_version) {
 621                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 622                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 623         }
 624         ipv6_chk = (ip_version && (tcpf || udpf));
 625
 626         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 627 }
 628
 629 static struct be_rx_page_info *
 630 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 631 {
 632         struct be_rx_page_info *rx_page_info;
 633         struct be_queue_info *rxq = &adapter->rx_obj.q;
 634
 635         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 636         BUG_ON(!rx_page_info->page);
 637
 638         if (rx_page_info->last_page_user)
 639                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 640                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 641
 642         atomic_dec(&rxq->used);
 643         return rx_page_info;
 644 }
 645
 646 /* Throwaway the data in the Rx completion */
 647 static void be_rx_compl_discard(struct be_adapter *adapter,
 648                         struct be_eth_rx_compl *rxcp)
 649 {
 650         struct be_queue_info *rxq = &adapter->rx_obj.q;
 651         struct be_rx_page_info *page_info;
 652         u16 rxq_idx, i, num_rcvd;
 653
 654         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 655         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 656
 657         for (i = 0; i < num_rcvd; i++) {
 658                 page_info = get_rx_page_info(adapter, rxq_idx);
 659                 put_page(page_info->page);
 660                 memset(page_info, 0, sizeof(*page_info));
 661                 index_inc(&rxq_idx, rxq->len);
 662         }
 663 }
 664
 665 /*
 666  * skb_fill_rx_data forms a complete skb for an ether frame
 667  * indicated by rxcp.
 668  */
 669 static void skb_fill_rx_data(struct be_adapter *adapter,
 670                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 671 {
 672         struct be_queue_info *rxq = &adapter->rx_obj.q;
 673         struct be_rx_page_info *page_info;
 674         u16 rxq_idx, i, num_rcvd, j;
 675         u32 pktsize, hdr_len, curr_frag_len, size;
 676         u8 *start;
 677
 678         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 679         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 680         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 681
 682         page_info = get_rx_page_info(adapter, rxq_idx);
 683
 684         start = page_address(page_info->page) + page_info->page_offset;
 685         prefetch(start);
 686
 687         /* Copy data in the first descriptor of this completion */
 688         curr_frag_len = min(pktsize, rx_frag_size);
 689
 690         /* Copy the header portion into skb_data */
 691         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 692         memcpy(skb->data, start, hdr_len);
 693         skb->len = curr_frag_len;
 694         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 695                 /* Complete packet has now been moved to data */
 696                 put_page(page_info->page);
 697                 skb->data_len = 0;
 698                 skb->tail += curr_frag_len;
 699         } else {
 700                 skb_shinfo(skb)->nr_frags = 1;
 701                 skb_shinfo(skb)->frags[0].page = page_info->page;
 702                 skb_shinfo(skb)->frags[0].page_offset =
 703                                         page_info->page_offset + hdr_len;
 704                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 705                 skb->data_len = curr_frag_len - hdr_len;
 706                 skb->tail += hdr_len;
 707         }
 708         memset(page_info, 0, sizeof(*page_info));
 709
 710         if (pktsize <= rx_frag_size) {
 711                 BUG_ON(num_rcvd != 1);
 712                 goto done;
 713         }
 714
 715         /* More frags present for this completion */
 716         size = pktsize;
 717         for (i = 1, j = 0; i < num_rcvd; i++) {
 718                 size -= curr_frag_len;
 719                 index_inc(&rxq_idx, rxq->len);
 720                 page_info = get_rx_page_info(adapter, rxq_idx);
 721
 722                 curr_frag_len = min(size, rx_frag_size);
 723
 724                 /* Coalesce all frags from the same physical page in one slot */
 725                 if (page_info->page_offset == 0) {
 726                         /* Fresh page */
 727                         j++;
 728                         skb_shinfo(skb)->frags[j].page = page_info->page;
 729                         skb_shinfo(skb)->frags[j].page_offset =
 730                                                         page_info->page_offset;
 731                         skb_shinfo(skb)->frags[j].size = 0;
 732                         skb_shinfo(skb)->nr_frags++;
 733                 } else {
 734                         put_page(page_info->page);
 735                 }
 736
 737                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 738                 skb->len += curr_frag_len;
 739                 skb->data_len += curr_frag_len;
 740
 741                 memset(page_info, 0, sizeof(*page_info));
 742         }
 743         BUG_ON(j > MAX_SKB_FRAGS);
 744
 745 done:
 746         be_rx_stats_update(adapter, pktsize, num_rcvd);
 747         return;
 748 }
 749
 750 /* Process the RX completion indicated by rxcp when GRO is disabled */
 751 static void be_rx_compl_process(struct be_adapter *adapter,
 752                         struct be_eth_rx_compl *rxcp)
 753 {
 754         struct sk_buff *skb;
 755         u32 vlanf, vid;
 756         u8 vtm;
 757
 758         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 759         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 760
 761         /* vlanf could be wrongly set in some cards.
 762          * ignore if vtm is not set */
 763         if ((adapter->cap & 0x400) && !vtm)
 764                 vlanf = 0;
 765
 766         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 767         if (!skb) {
 768                 if (net_ratelimit())
 769                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 770                 be_rx_compl_discard(adapter, rxcp);
 771                 return;
 772         }
 773
 774         skb_fill_rx_data(adapter, skb, rxcp);
 775
 776         if (do_pkt_csum(rxcp, adapter->rx_csum))
 777                 skb->ip_summed = CHECKSUM_NONE;
 778         else
 779                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 780
 781         skb->truesize = skb->len + sizeof(struct sk_buff);
 782         skb->protocol = eth_type_trans(skb, adapter->netdev);
 783         skb->dev = adapter->netdev;
 784
 785         if (vlanf) {
 786                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 787                         kfree_skb(skb);
 788                         return;
 789                 }
 790                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 791                 vid = be16_to_cpu(vid);
 792                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 793         } else {
 794                 netif_receive_skb(skb);
 795         }
 796
 797         return;
 798 }
 799
 800 /* Process the RX completion indicated by rxcp when GRO is enabled */
 801 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 802                         struct be_eth_rx_compl *rxcp)
 803 {
 804         struct be_rx_page_info *page_info;
 805         struct sk_buff *skb = NULL;
 806         struct be_queue_info *rxq = &adapter->rx_obj.q;
 807         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 808         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 809         u16 i, rxq_idx = 0, vid, j;
 810         u8 vtm;
 811
 812         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 813         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 814         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 815         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 816         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 817
 818         /* vlanf could be wrongly set in some cards.
 819          * ignore if vtm is not set */
 820         if ((adapter->cap & 0x400) && !vtm)
 821                 vlanf = 0;
 822
 823         skb = napi_get_frags(&eq_obj->napi);
 824         if (!skb) {
 825                 be_rx_compl_discard(adapter, rxcp);
 826                 return;
 827         }
 828
 829         remaining = pkt_size;
 830         for (i = 0, j = -1; i < num_rcvd; i++) {
 831                 page_info = get_rx_page_info(adapter, rxq_idx);
 832
 833                 curr_frag_len = min(remaining, rx_frag_size);
 834
 835                 /* Coalesce all frags from the same physical page in one slot */
 836                 if (i == 0 || page_info->page_offset == 0) {
 837                         /* First frag or Fresh page */
 838                         j++;
 839                         skb_shinfo(skb)->frags[j].page = page_info->page;
 840                         skb_shinfo(skb)->frags[j].page_offset =
 841                                                         page_info->page_offset;
 842                         skb_shinfo(skb)->frags[j].size = 0;
 843                 } else {
 844                         put_page(page_info->page);
 845                 }
 846                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 847
 848                 remaining -= curr_frag_len;
 849                 index_inc(&rxq_idx, rxq->len);
 850                 memset(page_info, 0, sizeof(*page_info));
 851         }
 852         BUG_ON(j > MAX_SKB_FRAGS);
 853
 854         skb_shinfo(skb)->nr_frags = j + 1;
 855         skb->len = pkt_size;
 856         skb->data_len = pkt_size;
 857         skb->truesize += pkt_size;
 858         skb->ip_summed = CHECKSUM_UNNECESSARY;
 859
 860         if (likely(!vlanf)) {
 861                 napi_gro_frags(&eq_obj->napi);
 862         } else {
 863                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 864                 vid = be16_to_cpu(vid);
 865
 866                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 867                         return;
 868
 869                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 870         }
 871
 872         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 873         return;
 874 }
 875
 876 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 877 {
 878         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 879
 880         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 881                 return NULL;
 882
 883         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 884
 885         queue_tail_inc(&adapter->rx_obj.cq);
 886         return rxcp;
 887 }
 888
 889 /* To reset the valid bit, we need to reset the whole word as
 890  * when walking the queue the valid entries are little-endian
 891  * and invalid entries are host endian
 892  */
 893 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 894 {
 895         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 896 }
 897
 898 static inline struct page *be_alloc_pages(u32 size)
 899 {
 900         gfp_t alloc_flags = GFP_ATOMIC;
 901         u32 order = get_order(size);
 902         if (order > 0)
 903                 alloc_flags |= __GFP_COMP;
 904         return  alloc_pages(alloc_flags, order);
 905 }
 906
 907 /*
 908  * Allocate a page, split it to fragments of size rx_frag_size and post as
 909  * receive buffers to BE
 910  */
 911 static void be_post_rx_frags(struct be_adapter *adapter)
 912 {
 913         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 914         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 915         struct be_queue_info *rxq = &adapter->rx_obj.q;
 916         struct page *pagep = NULL;
 917         struct be_eth_rx_d *rxd;
 918         u64 page_dmaaddr = 0, frag_dmaaddr;
 919         u32 posted, page_offset = 0;
 920
 921         page_info = &page_info_tbl[rxq->head];
 922         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 923                 if (!pagep) {
 924                         pagep = be_alloc_pages(adapter->big_page_size);
 925                         if (unlikely(!pagep)) {
 926                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 927                                 break;
 928                         }
 929                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 930                                                 adapter->big_page_size,
 931                                                 PCI_DMA_FROMDEVICE);
 932                         page_info->page_offset = 0;
 933                 } else {
 934                         get_page(pagep);
 935                         page_info->page_offset = page_offset + rx_frag_size;
 936                 }
 937                 page_offset = page_info->page_offset;
 938                 page_info->page = pagep;
 939                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 940                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 941
 942                 rxd = queue_head_node(rxq);
 943                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 944                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 945
 946                 /* Any space left in the current big page for another frag? */
 947                 if ((page_offset + rx_frag_size + rx_frag_size) >
 948                                         adapter->big_page_size) {
 949                         pagep = NULL;
 950                         page_info->last_page_user = true;
 951                 }
 952
 953                 prev_page_info = page_info;
 954                 queue_head_inc(rxq);
 955                 page_info = &page_info_tbl[rxq->head];
 956         }
 957         if (pagep)
 958                 prev_page_info->last_page_user = true;
 959
 960         if (posted) {
 961                 atomic_add(posted, &rxq->used);
 962                 be_rxq_notify(adapter, rxq->id, posted);
 963         } else if (atomic_read(&rxq->used) == 0) {
 964                 /* Let be_worker replenish when memory is available */
 965                 adapter->rx_post_starved = true;
 966         }
 967
 968         return;
 969 }
 970
 971 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 972 {
 973         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 974
 975         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 976                 return NULL;
 977
 978         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 979
 980         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 981
 982         queue_tail_inc(tx_cq);
 983         return txcp;
 984 }
 985
 986 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 987 {
 988         struct be_queue_info *txq = &adapter->tx_obj.q;
 989         struct be_eth_wrb *wrb;
 990         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 991         struct sk_buff *sent_skb;
 992         u64 busaddr;
 993         u16 cur_index, num_wrbs = 0;
 994
 995         cur_index = txq->tail;
 996         sent_skb = sent_skbs[cur_index];
 997         BUG_ON(!sent_skb);
 998         sent_skbs[cur_index] = NULL;
 999         wrb = queue_tail_node(txq);
1000         be_dws_le_to_cpu(wrb, sizeof(*wrb));
1001         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1002         if (busaddr != 0) {
1003                 pci_unmap_single(adapter->pdev, busaddr,
1004                                  wrb->frag_len, PCI_DMA_TODEVICE);
1005         }
1006         num_wrbs++;
1007         queue_tail_inc(txq);
1008
1009         while (cur_index != last_index) {
1010                 cur_index = txq->tail;
1011                 wrb = queue_tail_node(txq);
1012                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1013                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1014                 if (busaddr != 0) {
1015                         pci_unmap_page(adapter->pdev, busaddr,
1016                                        wrb->frag_len, PCI_DMA_TODEVICE);
1017                 }
1018                 num_wrbs++;
1019                 queue_tail_inc(txq);
1020         }
1021
1022         atomic_sub(num_wrbs, &txq->used);
1023
1024         kfree_skb(sent_skb);
1025 }
1026
1027 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1028 {
1029         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1030
1031         if (!eqe->evt)
1032                 return NULL;
1033
1034         eqe->evt = le32_to_cpu(eqe->evt);
1035         queue_tail_inc(&eq_obj->q);
1036         return eqe;
1037 }
1038
1039 static int event_handle(struct be_adapter *adapter,
1040                         struct be_eq_obj *eq_obj)
1041 {
1042         struct be_eq_entry *eqe;
1043         u16 num = 0;
1044
1045         while ((eqe = event_get(eq_obj)) != NULL) {
1046                 eqe->evt = 0;
1047                 num++;
1048         }
1049
1050         /* Deal with any spurious interrupts that come
1051          * without events
1052          */
1053         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1054         if (num)
1055                 napi_schedule(&eq_obj->napi);
1056
1057         return num;
1058 }
1059
1060 /* Just read and notify events without processing them.
1061  * Used at the time of destroying event queues */
1062 static void be_eq_clean(struct be_adapter *adapter,
1063                         struct be_eq_obj *eq_obj)
1064 {
1065         struct be_eq_entry *eqe;
1066         u16 num = 0;
1067
1068         while ((eqe = event_get(eq_obj)) != NULL) {
1069                 eqe->evt = 0;
1070                 num++;
1071         }
1072
1073         if (num)
1074                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1075 }
1076
1077 static void be_rx_q_clean(struct be_adapter *adapter)
1078 {
1079         struct be_rx_page_info *page_info;
1080         struct be_queue_info *rxq = &adapter->rx_obj.q;
1081         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1082         struct be_eth_rx_compl *rxcp;
1083         u16 tail;
1084
1085         /* First cleanup pending rx completions */
1086         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1087                 be_rx_compl_discard(adapter, rxcp);
1088                 be_rx_compl_reset(rxcp);
1089                 be_cq_notify(adapter, rx_cq->id, true, 1);
1090         }
1091
1092         /* Then free posted rx buffer that were not used */
1093         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1094         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1095                 page_info = get_rx_page_info(adapter, tail);
1096                 put_page(page_info->page);
1097                 memset(page_info, 0, sizeof(*page_info));
1098         }
1099         BUG_ON(atomic_read(&rxq->used));
1100 }
1101
1102 static void be_tx_compl_clean(struct be_adapter *adapter)
1103 {
1104         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1105         struct be_queue_info *txq = &adapter->tx_obj.q;
1106         struct be_eth_tx_compl *txcp;
1107         u16 end_idx, cmpl = 0, timeo = 0;
1108
1109         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1110         do {
1111                 while ((txcp = be_tx_compl_get(tx_cq))) {
1112                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1113                                         wrb_index, txcp);
1114                         be_tx_compl_process(adapter, end_idx);
1115                         cmpl++;
1116                 }
1117                 if (cmpl) {
1118                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1119                         cmpl = 0;
1120                 }
1121
1122                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1123                         break;
1124
1125                 mdelay(1);
1126         } while (true);
1127
1128         if (atomic_read(&txq->used))
1129                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1130                         atomic_read(&txq->used));
1131 }
1132
1133 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1134 {
1135         struct be_queue_info *q;
1136
1137         q = &adapter->mcc_obj.q;
1138         if (q->created)
1139                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1140         be_queue_free(adapter, q);
1141
1142         q = &adapter->mcc_obj.cq;
1143         if (q->created)
1144                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1145         be_queue_free(adapter, q);
1146 }
1147
1148 /* Must be called only after TX qs are created as MCC shares TX EQ */
1149 static int be_mcc_queues_create(struct be_adapter *adapter)
1150 {
1151         struct be_queue_info *q, *cq;
1152
1153         /* Alloc MCC compl queue */
1154         cq = &adapter->mcc_obj.cq;
1155         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1156                         sizeof(struct be_mcc_compl)))
1157                 goto err;
1158
1159         /* Ask BE to create MCC compl queue; share TX's eq */
1160         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1161                 goto mcc_cq_free;
1162
1163         /* Alloc MCC queue */
1164         q = &adapter->mcc_obj.q;
1165         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1166                 goto mcc_cq_destroy;
1167
1168         /* Ask BE to create MCC queue */
1169         if (be_cmd_mccq_create(adapter, q, cq))
1170                 goto mcc_q_free;
1171
1172         return 0;
1173
1174 mcc_q_free:
1175         be_queue_free(adapter, q);
1176 mcc_cq_destroy:
1177         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1178 mcc_cq_free:
1179         be_queue_free(adapter, cq);
1180 err:
1181         return -1;
1182 }
1183
1184 static void be_tx_queues_destroy(struct be_adapter *adapter)
1185 {
1186         struct be_queue_info *q;
1187
1188         q = &adapter->tx_obj.q;
1189         if (q->created)
1190                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1191         be_queue_free(adapter, q);
1192
1193         q = &adapter->tx_obj.cq;
1194         if (q->created)
1195                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1196         be_queue_free(adapter, q);
1197
1198         /* Clear any residual events */
1199         be_eq_clean(adapter, &adapter->tx_eq);
1200
1201         q = &adapter->tx_eq.q;
1202         if (q->created)
1203                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1204         be_queue_free(adapter, q);
1205 }
1206
1207 static int be_tx_queues_create(struct be_adapter *adapter)
1208 {
1209         struct be_queue_info *eq, *q, *cq;
1210
1211         adapter->tx_eq.max_eqd = 0;
1212         adapter->tx_eq.min_eqd = 0;
1213         adapter->tx_eq.cur_eqd = 96;
1214         adapter->tx_eq.enable_aic = false;
1215         /* Alloc Tx Event queue */
1216         eq = &adapter->tx_eq.q;
1217         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1218                 return -1;
1219
1220         /* Ask BE to create Tx Event queue */
1221         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1222                 goto tx_eq_free;
1223         /* Alloc TX eth compl queue */
1224         cq = &adapter->tx_obj.cq;
1225         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1226                         sizeof(struct be_eth_tx_compl)))
1227                 goto tx_eq_destroy;
1228
1229         /* Ask BE to create Tx eth compl queue */
1230         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1231                 goto tx_cq_free;
1232
1233         /* Alloc TX eth queue */
1234         q = &adapter->tx_obj.q;
1235         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1236                 goto tx_cq_destroy;
1237
1238         /* Ask BE to create Tx eth queue */
1239         if (be_cmd_txq_create(adapter, q, cq))
1240                 goto tx_q_free;
1241         return 0;
1242
1243 tx_q_free:
1244         be_queue_free(adapter, q);
1245 tx_cq_destroy:
1246         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1247 tx_cq_free:
1248         be_queue_free(adapter, cq);
1249 tx_eq_destroy:
1250         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1251 tx_eq_free:
1252         be_queue_free(adapter, eq);
1253         return -1;
1254 }
1255
1256 static void be_rx_queues_destroy(struct be_adapter *adapter)
1257 {
1258         struct be_queue_info *q;
1259
1260         q = &adapter->rx_obj.q;
1261         if (q->created) {
1262                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1263                 be_rx_q_clean(adapter);
1264         }
1265         be_queue_free(adapter, q);
1266
1267         q = &adapter->rx_obj.cq;
1268         if (q->created)
1269                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1270         be_queue_free(adapter, q);
1271
1272         /* Clear any residual events */
1273         be_eq_clean(adapter, &adapter->rx_eq);
1274
1275         q = &adapter->rx_eq.q;
1276         if (q->created)
1277                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1278         be_queue_free(adapter, q);
1279 }
1280
1281 static int be_rx_queues_create(struct be_adapter *adapter)
1282 {
1283         struct be_queue_info *eq, *q, *cq;
1284         int rc;
1285
1286         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1287         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1288         adapter->rx_eq.min_eqd = 0;
1289         adapter->rx_eq.cur_eqd = 0;
1290         adapter->rx_eq.enable_aic = true;
1291
1292         /* Alloc Rx Event queue */
1293         eq = &adapter->rx_eq.q;
1294         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1295                                 sizeof(struct be_eq_entry));
1296         if (rc)
1297                 return rc;
1298
1299         /* Ask BE to create Rx Event queue */
1300         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1301         if (rc)
1302                 goto rx_eq_free;
1303
1304         /* Alloc RX eth compl queue */
1305         cq = &adapter->rx_obj.cq;
1306         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1307                         sizeof(struct be_eth_rx_compl));
1308         if (rc)
1309                 goto rx_eq_destroy;
1310
1311         /* Ask BE to create Rx eth compl queue */
1312         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1313         if (rc)
1314                 goto rx_cq_free;
1315
1316         /* Alloc RX eth queue */
1317         q = &adapter->rx_obj.q;
1318         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1319         if (rc)
1320                 goto rx_cq_destroy;
1321
1322         /* Ask BE to create Rx eth queue */
1323         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1324                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1325         if (rc)
1326                 goto rx_q_free;
1327
1328         return 0;
1329 rx_q_free:
1330         be_queue_free(adapter, q);
1331 rx_cq_destroy:
1332         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1333 rx_cq_free:
1334         be_queue_free(adapter, cq);
1335 rx_eq_destroy:
1336         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1337 rx_eq_free:
1338         be_queue_free(adapter, eq);
1339         return rc;
1340 }
1341
1342 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1343 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1344 {
1345         return eq_id - 8 * be_pci_func(adapter);
1346 }
1347
1348 static irqreturn_t be_intx(int irq, void *dev)
1349 {
1350         struct be_adapter *adapter = dev;
1351         int isr;
1352
1353         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1354                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1355         if (!isr)
1356                 return IRQ_NONE;
1357
1358         event_handle(adapter, &adapter->tx_eq);
1359         event_handle(adapter, &adapter->rx_eq);
1360
1361         return IRQ_HANDLED;
1362 }
1363
1364 static irqreturn_t be_msix_rx(int irq, void *dev)
1365 {
1366         struct be_adapter *adapter = dev;
1367
1368         event_handle(adapter, &adapter->rx_eq);
1369
1370         return IRQ_HANDLED;
1371 }
1372
1373 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1374 {
1375         struct be_adapter *adapter = dev;
1376
1377         event_handle(adapter, &adapter->tx_eq);
1378
1379         return IRQ_HANDLED;
1380 }
1381
1382 static inline bool do_gro(struct be_adapter *adapter,
1383                         struct be_eth_rx_compl *rxcp)
1384 {
1385         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1386         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1387
1388         if (err)
1389                 drvr_stats(adapter)->be_rxcp_err++;
1390
1391         return (tcp_frame && !err) ? true : false;
1392 }
1393
1394 int be_poll_rx(struct napi_struct *napi, int budget)
1395 {
1396         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1397         struct be_adapter *adapter =
1398                 container_of(rx_eq, struct be_adapter, rx_eq);
1399         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1400         struct be_eth_rx_compl *rxcp;
1401         u32 work_done;
1402
1403         adapter->stats.drvr_stats.be_rx_polls++;
1404         for (work_done = 0; work_done < budget; work_done++) {
1405                 rxcp = be_rx_compl_get(adapter);
1406                 if (!rxcp)
1407                         break;
1408
1409                 if (do_gro(adapter, rxcp))
1410                         be_rx_compl_process_gro(adapter, rxcp);
1411                 else
1412                         be_rx_compl_process(adapter, rxcp);
1413
1414                 be_rx_compl_reset(rxcp);
1415         }
1416
1417         /* Refill the queue */
1418         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1419                 be_post_rx_frags(adapter);
1420
1421         /* All consumed */
1422         if (work_done < budget) {
1423                 napi_complete(napi);
1424                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1425         } else {
1426                 /* More to be consumed; continue with interrupts disabled */
1427                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1428         }
1429         return work_done;
1430 }
1431
1432 void be_process_tx(struct be_adapter *adapter)
1433 {
1434         struct be_queue_info *txq = &adapter->tx_obj.q;
1435         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1436         struct be_eth_tx_compl *txcp;
1437         u32 num_cmpl = 0;
1438         u16 end_idx;
1439
1440         while ((txcp = be_tx_compl_get(tx_cq))) {
1441                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1442                                         wrb_index, txcp);
1443                 be_tx_compl_process(adapter, end_idx);
1444                 num_cmpl++;
1445         }
1446
1447         if (num_cmpl) {
1448                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1449
1450                 /* As Tx wrbs have been freed up, wake up netdev queue if
1451                  * it was stopped due to lack of tx wrbs.
1452                  */
1453                 if (netif_queue_stopped(adapter->netdev) &&
1454                         atomic_read(&txq->used) < txq->len / 2) {
1455                         netif_wake_queue(adapter->netdev);
1456                 }
1457
1458                 drvr_stats(adapter)->be_tx_events++;
1459                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1460         }
1461 }
1462
1463 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1464  * For TX/MCC we don't honour budget; consume everything
1465  */
1466 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1467 {
1468         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1469         struct be_adapter *adapter =
1470                 container_of(tx_eq, struct be_adapter, tx_eq);
1471
1472         napi_complete(napi);
1473
1474         be_process_tx(adapter);
1475
1476         be_process_mcc(adapter);
1477
1478         return 1;
1479 }
1480
1481 static void be_worker(struct work_struct *work)
1482 {
1483         struct be_adapter *adapter =
1484                 container_of(work, struct be_adapter, work.work);
1485
1486         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1487
1488         /* Set EQ delay */
1489         be_rx_eqd_update(adapter);
1490
1491         be_tx_rate_update(adapter);
1492         be_rx_rate_update(adapter);
1493
1494         if (adapter->rx_post_starved) {
1495                 adapter->rx_post_starved = false;
1496                 be_post_rx_frags(adapter);
1497         }
1498
1499         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1500 }
1501
1502 static void be_msix_disable(struct be_adapter *adapter)
1503 {
1504         if (adapter->msix_enabled) {
1505                 pci_disable_msix(adapter->pdev);
1506                 adapter->msix_enabled = false;
1507         }
1508 }
1509
1510 static void be_msix_enable(struct be_adapter *adapter)
1511 {
1512         int i, status;
1513
1514         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1515                 adapter->msix_entries[i].entry = i;
1516
1517         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1518                 BE_NUM_MSIX_VECTORS);
1519         if (status == 0)
1520                 adapter->msix_enabled = true;
1521         return;
1522 }
1523
1524 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1525 {
1526         return adapter->msix_entries[
1527                         be_evt_bit_get(adapter, eq_id)].vector;
1528 }
1529
1530 static int be_request_irq(struct be_adapter *adapter,
1531                 struct be_eq_obj *eq_obj,
1532                 void *handler, char *desc)
1533 {
1534         struct net_device *netdev = adapter->netdev;
1535         int vec;
1536
1537         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1538         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1539         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1540 }
1541
1542 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1543 {
1544         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1545         free_irq(vec, adapter);
1546 }
1547
1548 static int be_msix_register(struct be_adapter *adapter)
1549 {
1550         int status;
1551
1552         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1553         if (status)
1554                 goto err;
1555
1556         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1557         if (status)
1558                 goto free_tx_irq;
1559
1560         return 0;
1561
1562 free_tx_irq:
1563         be_free_irq(adapter, &adapter->tx_eq);
1564 err:
1565         dev_warn(&adapter->pdev->dev,
1566                 "MSIX Request IRQ failed - err %d\n", status);
1567         pci_disable_msix(adapter->pdev);
1568         adapter->msix_enabled = false;
1569         return status;
1570 }
1571
1572 static int be_irq_register(struct be_adapter *adapter)
1573 {
1574         struct net_device *netdev = adapter->netdev;
1575         int status;
1576
1577         if (adapter->msix_enabled) {
1578                 status = be_msix_register(adapter);
1579                 if (status == 0)
1580                         goto done;
1581         }
1582
1583         /* INTx */
1584         netdev->irq = adapter->pdev->irq;
1585         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1586                         adapter);
1587         if (status) {
1588                 dev_err(&adapter->pdev->dev,
1589                         "INTx request IRQ failed - err %d\n", status);
1590                 return status;
1591         }
1592 done:
1593         adapter->isr_registered = true;
1594         return 0;
1595 }
1596
1597 static void be_irq_unregister(struct be_adapter *adapter)
1598 {
1599         struct net_device *netdev = adapter->netdev;
1600
1601         if (!adapter->isr_registered)
1602                 return;
1603
1604         /* INTx */
1605         if (!adapter->msix_enabled) {
1606                 free_irq(netdev->irq, adapter);
1607                 goto done;
1608         }
1609
1610         /* MSIx */
1611         be_free_irq(adapter, &adapter->tx_eq);
1612         be_free_irq(adapter, &adapter->rx_eq);
1613 done:
1614         adapter->isr_registered = false;
1615         return;
1616 }
1617
1618 static int be_open(struct net_device *netdev)
1619 {
1620         struct be_adapter *adapter = netdev_priv(netdev);
1621         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1622         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1623         bool link_up;
1624         int status;
1625         u8 mac_speed;
1626         u16 link_speed;
1627
1628         /* First time posting */
1629         be_post_rx_frags(adapter);
1630
1631         napi_enable(&rx_eq->napi);
1632         napi_enable(&tx_eq->napi);
1633
1634         be_irq_register(adapter);
1635
1636         be_intr_set(adapter, true);
1637
1638         /* The evt queues are created in unarmed state; arm them */
1639         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1640         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1641
1642         /* Rx compl queue may be in unarmed state; rearm it */
1643         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1644
1645         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1646                         &link_speed);
1647         if (status)
1648                 goto ret_sts;
1649         be_link_status_update(adapter, link_up);
1650
1651         status = be_vid_config(adapter);
1652         if (status)
1653                 goto ret_sts;
1654
1655         status = be_cmd_set_flow_control(adapter,
1656                                         adapter->tx_fc, adapter->rx_fc);
1657         if (status)
1658                 goto ret_sts;
1659
1660         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1661 ret_sts:
1662         return status;
1663 }
1664
1665 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1666 {
1667         struct be_dma_mem cmd;
1668         int status = 0;
1669         u8 mac[ETH_ALEN];
1670
1671         memset(mac, 0, ETH_ALEN);
1672
1673         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1674         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1675         if (cmd.va == NULL)
1676                 return -1;
1677         memset(cmd.va, 0, cmd.size);
1678
1679         if (enable) {
1680                 status = pci_write_config_dword(adapter->pdev,
1681                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1682                 if (status) {
1683                         dev_err(&adapter->pdev->dev,
1684                                 "Could not enable Wake-on-lan \n");
1685                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1686                                         cmd.dma);
1687                         return status;
1688                 }
1689                 status = be_cmd_enable_magic_wol(adapter,
1690                                 adapter->netdev->dev_addr, &cmd);
1691                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1692                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1693         } else {
1694                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1695                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1696                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1697         }
1698
1699         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1700         return status;
1701 }
1702
1703 static int be_setup(struct be_adapter *adapter)
1704 {
1705         struct net_device *netdev = adapter->netdev;
1706         u32 cap_flags, en_flags;
1707         int status;
1708
1709         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1710                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1711                         BE_IF_FLAGS_PROMISCUOUS |
1712                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1713         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1714                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1715
1716         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1717                         netdev->dev_addr, false/* pmac_invalid */,
1718                         &adapter->if_handle, &adapter->pmac_id);
1719         if (status != 0)
1720                 goto do_none;
1721
1722         status = be_tx_queues_create(adapter);
1723         if (status != 0)
1724                 goto if_destroy;
1725
1726         status = be_rx_queues_create(adapter);
1727         if (status != 0)
1728                 goto tx_qs_destroy;
1729
1730         status = be_mcc_queues_create(adapter);
1731         if (status != 0)
1732                 goto rx_qs_destroy;
1733
1734         adapter->link_speed = -1;
1735
1736         return 0;
1737
1738 rx_qs_destroy:
1739         be_rx_queues_destroy(adapter);
1740 tx_qs_destroy:
1741         be_tx_queues_destroy(adapter);
1742 if_destroy:
1743         be_cmd_if_destroy(adapter, adapter->if_handle);
1744 do_none:
1745         return status;
1746 }
1747
1748 static int be_clear(struct be_adapter *adapter)
1749 {
1750         be_mcc_queues_destroy(adapter);
1751         be_rx_queues_destroy(adapter);
1752         be_tx_queues_destroy(adapter);
1753
1754         be_cmd_if_destroy(adapter, adapter->if_handle);
1755
1756         /* tell fw we're done with firing cmds */
1757         be_cmd_fw_clean(adapter);
1758         return 0;
1759 }
1760
1761 static int be_close(struct net_device *netdev)
1762 {
1763         struct be_adapter *adapter = netdev_priv(netdev);
1764         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1765         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1766         int vec;
1767
1768         cancel_delayed_work_sync(&adapter->work);
1769
1770         netif_stop_queue(netdev);
1771         netif_carrier_off(netdev);
1772         adapter->link_up = false;
1773
1774         be_intr_set(adapter, false);
1775
1776         if (adapter->msix_enabled) {
1777                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1778                 synchronize_irq(vec);
1779                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1780                 synchronize_irq(vec);
1781         } else {
1782                 synchronize_irq(netdev->irq);
1783         }
1784         be_irq_unregister(adapter);
1785
1786         napi_disable(&rx_eq->napi);
1787         napi_disable(&tx_eq->napi);
1788
1789         /* Wait for all pending tx completions to arrive so that
1790          * all tx skbs are freed.
1791          */
1792         be_tx_compl_clean(adapter);
1793
1794         return 0;
1795 }
1796
1797 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1798 char flash_cookie[2][16] =      {"*** SE FLAS",
1799                                 "H DIRECTORY *** "};
1800
1801 static bool be_flash_redboot(struct be_adapter *adapter,
1802                         const u8 *p)
1803 {
1804         u32 crc_offset;
1805         u8 flashed_crc[4];
1806         int status;
1807         crc_offset = FLASH_REDBOOT_START + FLASH_REDBOOT_IMAGE_MAX_SIZE - 4
1808                         + sizeof(struct flash_file_hdr) - 32*1024;
1809         p += crc_offset;
1810         status = be_cmd_get_flash_crc(adapter, flashed_crc);
1811         if (status) {
1812                 dev_err(&adapter->pdev->dev,
1813                 "could not get crc from flash, not flashing redboot\n");
1814                 return false;
1815         }
1816
1817         /*update redboot only if crc does not match*/
1818         if (!memcmp(flashed_crc, p, 4))
1819                 return false;
1820         else
1821                 return true;
1822
1823 }
1824
1825 static int be_flash_image(struct be_adapter *adapter,
1826                         const struct firmware *fw,
1827                         struct be_dma_mem *flash_cmd, u32 flash_type)
1828 {
1829         int status;
1830         u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1831         int num_bytes;
1832         const u8 *p = fw->data;
1833         struct be_cmd_write_flashrom *req = flash_cmd->va;
1834
1835         switch (flash_type) {
1836         case FLASHROM_TYPE_ISCSI_ACTIVE:
1837                 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1838                 image_size = FLASH_IMAGE_MAX_SIZE;
1839                 break;
1840         case FLASHROM_TYPE_ISCSI_BACKUP:
1841                 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1842                 image_size = FLASH_IMAGE_MAX_SIZE;
1843                 break;
1844         case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1845                 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1846                 image_size = FLASH_IMAGE_MAX_SIZE;
1847                 break;
1848         case FLASHROM_TYPE_FCOE_FW_BACKUP:
1849                 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1850                 image_size = FLASH_IMAGE_MAX_SIZE;
1851                 break;
1852         case FLASHROM_TYPE_BIOS:
1853                 image_offset = FLASH_iSCSI_BIOS_START;
1854                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1855                 break;
1856         case FLASHROM_TYPE_FCOE_BIOS:
1857                 image_offset = FLASH_FCoE_BIOS_START;
1858                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1859                 break;
1860         case FLASHROM_TYPE_PXE_BIOS:
1861                 image_offset = FLASH_PXE_BIOS_START;
1862                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1863                 break;
1864         case FLASHROM_TYPE_REDBOOT:
1865                 if (!be_flash_redboot(adapter, fw->data))
1866                         return 0;
1867                 image_offset = FLASH_REDBOOT_ISM_START;
1868                 image_size = FLASH_REDBOOT_IMAGE_MAX_SIZE;
1869                 break;
1870         default:
1871                 return 0;
1872         }
1873
1874         p += sizeof(struct flash_file_hdr) + image_offset;
1875         if (p + image_size > fw->data + fw->size)
1876                 return -1;
1877
1878         total_bytes = image_size;
1879
1880         while (total_bytes) {
1881                 if (total_bytes > 32*1024)
1882                         num_bytes = 32*1024;
1883                 else
1884                         num_bytes = total_bytes;
1885                 total_bytes -= num_bytes;
1886
1887                 if (!total_bytes)
1888                         flash_op = FLASHROM_OPER_FLASH;
1889                 else
1890                         flash_op = FLASHROM_OPER_SAVE;
1891                 memcpy(req->params.data_buf, p, num_bytes);
1892                 p += num_bytes;
1893                 status = be_cmd_write_flashrom(adapter, flash_cmd,
1894                                 flash_type, flash_op, num_bytes);
1895                 if (status) {
1896                         dev_err(&adapter->pdev->dev,
1897                         "cmd to write to flash rom failed. type/op %d/%d\n",
1898                         flash_type, flash_op);
1899                         return -1;
1900                 }
1901                 yield();
1902         }
1903
1904         return 0;
1905 }
1906
1907 int be_load_fw(struct be_adapter *adapter, u8 *func)
1908 {
1909         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1910         const struct firmware *fw;
1911         struct flash_file_hdr *fhdr;
1912         struct flash_section_info *fsec = NULL;
1913         struct be_dma_mem flash_cmd;
1914         int status;
1915         const u8 *p;
1916         bool entry_found = false;
1917         int flash_type;
1918         char fw_ver[FW_VER_LEN];
1919         char fw_cfg;
1920
1921         status = be_cmd_get_fw_ver(adapter, fw_ver);
1922         if (status)
1923                 return status;
1924
1925         fw_cfg = *(fw_ver + 2);
1926         if (fw_cfg == '0')
1927                 fw_cfg = '1';
1928         strcpy(fw_file, func);
1929
1930         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1931         if (status)
1932                 goto fw_exit;
1933
1934         p = fw->data;
1935         fhdr = (struct flash_file_hdr *) p;
1936         if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1937                 dev_err(&adapter->pdev->dev,
1938                         "Firmware(%s) load error (signature did not match)\n",
1939                                 fw_file);
1940                 status = -1;
1941                 goto fw_exit;
1942         }
1943
1944         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1945
1946         p += sizeof(struct flash_file_hdr);
1947         while (p < (fw->data + fw->size)) {
1948                 fsec = (struct flash_section_info *)p;
1949                 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1950                         entry_found = true;
1951                         break;
1952                 }
1953                 p += 32;
1954         }
1955
1956         if (!entry_found) {
1957                 status = -1;
1958                 dev_err(&adapter->pdev->dev,
1959                         "Flash cookie not found in firmware image\n");
1960                 goto fw_exit;
1961         }
1962
1963         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1964         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1965                                         &flash_cmd.dma);
1966         if (!flash_cmd.va) {
1967                 status = -ENOMEM;
1968                 dev_err(&adapter->pdev->dev,
1969                         "Memory allocation failure while flashing\n");
1970                 goto fw_exit;
1971         }
1972
1973         for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1974                 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1975                 status = be_flash_image(adapter, fw, &flash_cmd,
1976                                 flash_type);
1977                 if (status)
1978                         break;
1979         }
1980
1981         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1982                                 flash_cmd.dma);
1983         if (status) {
1984                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1985                 goto fw_exit;
1986         }
1987
1988         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
1989
1990 fw_exit:
1991         release_firmware(fw);
1992         return status;
1993 }
1994
1995 static struct net_device_ops be_netdev_ops = {
1996         .ndo_open               = be_open,
1997         .ndo_stop               = be_close,
1998         .ndo_start_xmit         = be_xmit,
1999         .ndo_get_stats          = be_get_stats,
2000         .ndo_set_rx_mode        = be_set_multicast_list,
2001         .ndo_set_mac_address    = be_mac_addr_set,
2002         .ndo_change_mtu         = be_change_mtu,
2003         .ndo_validate_addr      = eth_validate_addr,
2004         .ndo_vlan_rx_register   = be_vlan_register,
2005         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2006         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2007 };
2008
2009 static void be_netdev_init(struct net_device *netdev)
2010 {
2011         struct be_adapter *adapter = netdev_priv(netdev);
2012
2013         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2014                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2015                 NETIF_F_GRO;
2016
2017         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2018
2019         netdev->flags |= IFF_MULTICAST;
2020
2021         adapter->rx_csum = true;
2022
2023         /* Default settings for Rx and Tx flow control */
2024         adapter->rx_fc = true;
2025         adapter->tx_fc = true;
2026
2027         netif_set_gso_max_size(netdev, 65535);
2028
2029         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2030
2031         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2032
2033         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2034                 BE_NAPI_WEIGHT);
2035         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2036                 BE_NAPI_WEIGHT);
2037
2038         netif_carrier_off(netdev);
2039         netif_stop_queue(netdev);
2040 }
2041
2042 static void be_unmap_pci_bars(struct be_adapter *adapter)
2043 {
2044         if (adapter->csr)
2045                 iounmap(adapter->csr);
2046         if (adapter->db)
2047                 iounmap(adapter->db);
2048         if (adapter->pcicfg)
2049                 iounmap(adapter->pcicfg);
2050 }
2051
2052 static int be_map_pci_bars(struct be_adapter *adapter)
2053 {
2054         u8 __iomem *addr;
2055         int pcicfg_reg;
2056
2057         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2058                         pci_resource_len(adapter->pdev, 2));
2059         if (addr == NULL)
2060                 return -ENOMEM;
2061         adapter->csr = addr;
2062
2063         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2064                         128 * 1024);
2065         if (addr == NULL)
2066                 goto pci_map_err;
2067         adapter->db = addr;
2068
2069         if (adapter->generation == BE_GEN2)
2070                 pcicfg_reg = 1;
2071         else
2072                 pcicfg_reg = 0;
2073
2074         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2075                         pci_resource_len(adapter->pdev, pcicfg_reg));
2076         if (addr == NULL)
2077                 goto pci_map_err;
2078         adapter->pcicfg = addr;
2079
2080         return 0;
2081 pci_map_err:
2082         be_unmap_pci_bars(adapter);
2083         return -ENOMEM;
2084 }
2085
2086
2087 static void be_ctrl_cleanup(struct be_adapter *adapter)
2088 {
2089         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2090
2091         be_unmap_pci_bars(adapter);
2092
2093         if (mem->va)
2094                 pci_free_consistent(adapter->pdev, mem->size,
2095                         mem->va, mem->dma);
2096
2097         mem = &adapter->mc_cmd_mem;
2098         if (mem->va)
2099                 pci_free_consistent(adapter->pdev, mem->size,
2100                         mem->va, mem->dma);
2101 }
2102
2103 static int be_ctrl_init(struct be_adapter *adapter)
2104 {
2105         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2106         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2107         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2108         int status;
2109
2110         status = be_map_pci_bars(adapter);
2111         if (status)
2112                 goto done;
2113
2114         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2115         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2116                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2117         if (!mbox_mem_alloc->va) {
2118                 status = -ENOMEM;
2119                 goto unmap_pci_bars;
2120         }
2121
2122         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2123         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2124         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2125         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2126
2127         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2128         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2129                         &mc_cmd_mem->dma);
2130         if (mc_cmd_mem->va == NULL) {
2131                 status = -ENOMEM;
2132                 goto free_mbox;
2133         }
2134         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2135
2136         spin_lock_init(&adapter->mbox_lock);
2137         spin_lock_init(&adapter->mcc_lock);
2138         spin_lock_init(&adapter->mcc_cq_lock);
2139
2140         return 0;
2141
2142 free_mbox:
2143         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2144                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2145
2146 unmap_pci_bars:
2147         be_unmap_pci_bars(adapter);
2148
2149 done:
2150         return status;
2151 }
2152
2153 static void be_stats_cleanup(struct be_adapter *adapter)
2154 {
2155         struct be_stats_obj *stats = &adapter->stats;
2156         struct be_dma_mem *cmd = &stats->cmd;
2157
2158         if (cmd->va)
2159                 pci_free_consistent(adapter->pdev, cmd->size,
2160                         cmd->va, cmd->dma);
2161 }
2162
2163 static int be_stats_init(struct be_adapter *adapter)
2164 {
2165         struct be_stats_obj *stats = &adapter->stats;
2166         struct be_dma_mem *cmd = &stats->cmd;
2167
2168         cmd->size = sizeof(struct be_cmd_req_get_stats);
2169         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2170         if (cmd->va == NULL)
2171                 return -1;
2172         memset(cmd->va, 0, cmd->size);
2173         return 0;
2174 }
2175
2176 static void __devexit be_remove(struct pci_dev *pdev)
2177 {
2178         struct be_adapter *adapter = pci_get_drvdata(pdev);
2179
2180         if (!adapter)
2181                 return;
2182
2183         unregister_netdev(adapter->netdev);
2184
2185         be_clear(adapter);
2186
2187         be_stats_cleanup(adapter);
2188
2189         be_ctrl_cleanup(adapter);
2190
2191         be_msix_disable(adapter);
2192
2193         pci_set_drvdata(pdev, NULL);
2194         pci_release_regions(pdev);
2195         pci_disable_device(pdev);
2196
2197         free_netdev(adapter->netdev);
2198 }
2199
2200 static int be_get_config(struct be_adapter *adapter)
2201 {
2202         int status;
2203         u8 mac[ETH_ALEN];
2204
2205         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2206         if (status)
2207                 return status;
2208
2209         status = be_cmd_query_fw_cfg(adapter,
2210                                 &adapter->port_num, &adapter->cap);
2211         if (status)
2212                 return status;
2213
2214         memset(mac, 0, ETH_ALEN);
2215         status = be_cmd_mac_addr_query(adapter, mac,
2216                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2217         if (status)
2218                 return status;
2219
2220         if (!is_valid_ether_addr(mac))
2221                 return -EADDRNOTAVAIL;
2222
2223         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2224         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2225
2226         return 0;
2227 }
2228
2229 static int __devinit be_probe(struct pci_dev *pdev,
2230                         const struct pci_device_id *pdev_id)
2231 {
2232         int status = 0;
2233         struct be_adapter *adapter;
2234         struct net_device *netdev;
2235
2236         status = pci_enable_device(pdev);
2237         if (status)
2238                 goto do_none;
2239
2240         status = pci_request_regions(pdev, DRV_NAME);
2241         if (status)
2242                 goto disable_dev;
2243         pci_set_master(pdev);
2244
2245         netdev = alloc_etherdev(sizeof(struct be_adapter));
2246         if (netdev == NULL) {
2247                 status = -ENOMEM;
2248                 goto rel_reg;
2249         }
2250         adapter = netdev_priv(netdev);
2251
2252         switch (pdev->device) {
2253         case BE_DEVICE_ID1:
2254         case OC_DEVICE_ID1:
2255                 adapter->generation = BE_GEN2;
2256                 break;
2257         case BE_DEVICE_ID2:
2258         case OC_DEVICE_ID2:
2259                 adapter->generation = BE_GEN3;
2260                 break;
2261         default:
2262                 adapter->generation = 0;
2263         }
2264
2265         adapter->pdev = pdev;
2266         pci_set_drvdata(pdev, adapter);
2267         adapter->netdev = netdev;
2268         be_netdev_init(netdev);
2269         SET_NETDEV_DEV(netdev, &pdev->dev);
2270
2271         be_msix_enable(adapter);
2272
2273         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2274         if (!status) {
2275                 netdev->features |= NETIF_F_HIGHDMA;
2276         } else {
2277                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2278                 if (status) {
2279                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2280                         goto free_netdev;
2281                 }
2282         }
2283
2284         status = be_ctrl_init(adapter);
2285         if (status)
2286                 goto free_netdev;
2287
2288         /* sync up with fw's ready state */
2289         status = be_cmd_POST(adapter);
2290         if (status)
2291                 goto ctrl_clean;
2292
2293         /* tell fw we're ready to fire cmds */
2294         status = be_cmd_fw_init(adapter);
2295         if (status)
2296                 goto ctrl_clean;
2297
2298         status = be_cmd_reset_function(adapter);
2299         if (status)
2300                 goto ctrl_clean;
2301
2302         status = be_stats_init(adapter);
2303         if (status)
2304                 goto ctrl_clean;
2305
2306         status = be_get_config(adapter);
2307         if (status)
2308                 goto stats_clean;
2309
2310         INIT_DELAYED_WORK(&adapter->work, be_worker);
2311
2312         status = be_setup(adapter);
2313         if (status)
2314                 goto stats_clean;
2315
2316         status = register_netdev(netdev);
2317         if (status != 0)
2318                 goto unsetup;
2319
2320         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2321         return 0;
2322
2323 unsetup:
2324         be_clear(adapter);
2325 stats_clean:
2326         be_stats_cleanup(adapter);
2327 ctrl_clean:
2328         be_ctrl_cleanup(adapter);
2329 free_netdev:
2330         be_msix_disable(adapter);
2331         free_netdev(adapter->netdev);
2332         pci_set_drvdata(pdev, NULL);
2333 rel_reg:
2334         pci_release_regions(pdev);
2335 disable_dev:
2336         pci_disable_device(pdev);
2337 do_none:
2338         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2339         return status;
2340 }
2341
2342 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2343 {
2344         struct be_adapter *adapter = pci_get_drvdata(pdev);
2345         struct net_device *netdev =  adapter->netdev;
2346
2347         if (adapter->wol)
2348                 be_setup_wol(adapter, true);
2349
2350         netif_device_detach(netdev);
2351         if (netif_running(netdev)) {
2352                 rtnl_lock();
2353                 be_close(netdev);
2354                 rtnl_unlock();
2355         }
2356         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2357         be_clear(adapter);
2358
2359         pci_save_state(pdev);
2360         pci_disable_device(pdev);
2361         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2362         return 0;
2363 }
2364
2365 static int be_resume(struct pci_dev *pdev)
2366 {
2367         int status = 0;
2368         struct be_adapter *adapter = pci_get_drvdata(pdev);
2369         struct net_device *netdev =  adapter->netdev;
2370
2371         netif_device_detach(netdev);
2372
2373         status = pci_enable_device(pdev);
2374         if (status)
2375                 return status;
2376
2377         pci_set_power_state(pdev, 0);
2378         pci_restore_state(pdev);
2379
2380         /* tell fw we're ready to fire cmds */
2381         status = be_cmd_fw_init(adapter);
2382         if (status)
2383                 return status;
2384
2385         be_setup(adapter);
2386         if (netif_running(netdev)) {
2387                 rtnl_lock();
2388                 be_open(netdev);
2389                 rtnl_unlock();
2390         }
2391         netif_device_attach(netdev);
2392
2393         if (adapter->wol)
2394                 be_setup_wol(adapter, false);
2395         return 0;
2396 }
2397
2398 static struct pci_driver be_driver = {
2399         .name = DRV_NAME,
2400         .id_table = be_dev_ids,
2401         .probe = be_probe,
2402         .remove = be_remove,
2403         .suspend = be_suspend,
2404         .resume = be_resume
2405 };
2406
2407 static int __init be_init_module(void)
2408 {
2409         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2410             rx_frag_size != 2048) {
2411                 printk(KERN_WARNING DRV_NAME
2412                         " : Module param rx_frag_size must be 2048/4096/8192."
2413                         " Using 2048\n");
2414                 rx_frag_size = 2048;
2415         }
2416
2417         return pci_register_driver(&be_driver);
2418 }
2419 module_init(be_init_module);
2420
2421 static void __exit be_exit_module(void)
2422 {
2423         pci_unregister_driver(&be_driver);
2424 }
2425 module_exit(be_exit_module);