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