drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2010 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  37         { 0 }
  38 };
  39 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  40
  41 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  42 {
  43         struct be_dma_mem *mem = &q->dma_mem;
  44         if (mem->va)
  45                 pci_free_consistent(adapter->pdev, mem->size,
  46                         mem->va, mem->dma);
  47 }
  48
  49 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  50                 u16 len, u16 entry_size)
  51 {
  52         struct be_dma_mem *mem = &q->dma_mem;
  53
  54         memset(q, 0, sizeof(*q));
  55         q->len = len;
  56         q->entry_size = entry_size;
  57         mem->size = len * entry_size;
  58         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  59         if (!mem->va)
  60                 return -1;
  61         memset(mem->va, 0, mem->size);
  62         return 0;
  63 }
  64
  65 static void be_intr_set(struct be_adapter *adapter, bool enable)
  66 {
  67         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  68         u32 reg = ioread32(addr);
  69         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  70
  71         if (adapter->eeh_err)
  72                 return;
  73
  74         if (!enabled && enable)
  75                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  76         else if (enabled && !enable)
  77                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  78         else
  79                 return;
  80
  81         iowrite32(reg, addr);
  82 }
  83
  84 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  85 {
  86         u32 val = 0;
  87         val |= qid & DB_RQ_RING_ID_MASK;
  88         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  89         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  90 }
  91
  92 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  93 {
  94         u32 val = 0;
  95         val |= qid & DB_TXULP_RING_ID_MASK;
  96         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  97         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  98 }
  99
 100 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
 101                 bool arm, bool clear_int, u16 num_popped)
 102 {
 103         u32 val = 0;
 104         val |= qid & DB_EQ_RING_ID_MASK;
 105
 106         if (adapter->eeh_err)
 107                 return;
 108
 109         if (arm)
 110                 val |= 1 << DB_EQ_REARM_SHIFT;
 111         if (clear_int)
 112                 val |= 1 << DB_EQ_CLR_SHIFT;
 113         val |= 1 << DB_EQ_EVNT_SHIFT;
 114         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 115         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 116 }
 117
 118 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 119 {
 120         u32 val = 0;
 121         val |= qid & DB_CQ_RING_ID_MASK;
 122
 123         if (adapter->eeh_err)
 124                 return;
 125
 126         if (arm)
 127                 val |= 1 << DB_CQ_REARM_SHIFT;
 128         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 129         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 130 }
 131
 132 static int be_mac_addr_set(struct net_device *netdev, void *p)
 133 {
 134         struct be_adapter *adapter = netdev_priv(netdev);
 135         struct sockaddr *addr = p;
 136         int status = 0;
 137
 138         if (!is_valid_ether_addr(addr->sa_data))
 139                 return -EADDRNOTAVAIL;
 140
 141         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 142         if (status)
 143                 return status;
 144
 145         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 146                         adapter->if_handle, &adapter->pmac_id);
 147         if (!status)
 148                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 149
 150         return status;
 151 }
 152
 153 void netdev_stats_update(struct be_adapter *adapter)
 154 {
 155         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 156         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 157         struct be_port_rxf_stats *port_stats =
 158                         &rxf_stats->port[adapter->port_num];
 159         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 160         struct be_erx_stats *erx_stats = &hw_stats->erx;
 161
 162         dev_stats->rx_packets = drvr_stats(adapter)->be_rx_pkts;
 163         dev_stats->tx_packets = drvr_stats(adapter)->be_tx_pkts;
 164         dev_stats->rx_bytes = drvr_stats(adapter)->be_rx_bytes;
 165         dev_stats->tx_bytes = drvr_stats(adapter)->be_tx_bytes;
 166
 167         /* bad pkts received */
 168         dev_stats->rx_errors = port_stats->rx_crc_errors +
 169                 port_stats->rx_alignment_symbol_errors +
 170                 port_stats->rx_in_range_errors +
 171                 port_stats->rx_out_range_errors +
 172                 port_stats->rx_frame_too_long +
 173                 port_stats->rx_dropped_too_small +
 174                 port_stats->rx_dropped_too_short +
 175                 port_stats->rx_dropped_header_too_small +
 176                 port_stats->rx_dropped_tcp_length +
 177                 port_stats->rx_dropped_runt +
 178                 port_stats->rx_tcp_checksum_errs +
 179                 port_stats->rx_ip_checksum_errs +
 180                 port_stats->rx_udp_checksum_errs;
 181
 182         /*  no space in linux buffers: best possible approximation */
 183         dev_stats->rx_dropped =
 184                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 185
 186         /* detailed rx errors */
 187         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 188                 port_stats->rx_out_range_errors +
 189                 port_stats->rx_frame_too_long;
 190
 191         /* receive ring buffer overflow */
 192         dev_stats->rx_over_errors = 0;
 193
 194         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 195
 196         /* frame alignment errors */
 197         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 198
 199         /* receiver fifo overrun */
 200         /* drops_no_pbuf is no per i/f, it's per BE card */
 201         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 202                                         port_stats->rx_input_fifo_overflow +
 203                                         rxf_stats->rx_drops_no_pbuf;
 204         /* receiver missed packetd */
 205         dev_stats->rx_missed_errors = 0;
 206
 207         /*  packet transmit problems */
 208         dev_stats->tx_errors = 0;
 209
 210         /* no space available in linux */
 211         dev_stats->tx_dropped = 0;
 212
 213         dev_stats->multicast = port_stats->rx_multicast_frames;
 214         dev_stats->collisions = 0;
 215
 216         /* detailed tx_errors */
 217         dev_stats->tx_aborted_errors = 0;
 218         dev_stats->tx_carrier_errors = 0;
 219         dev_stats->tx_fifo_errors = 0;
 220         dev_stats->tx_heartbeat_errors = 0;
 221         dev_stats->tx_window_errors = 0;
 222 }
 223
 224 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 225 {
 226         struct net_device *netdev = adapter->netdev;
 227
 228         /* If link came up or went down */
 229         if (adapter->link_up != link_up) {
 230                 adapter->link_speed = -1;
 231                 if (link_up) {
 232                         netif_start_queue(netdev);
 233                         netif_carrier_on(netdev);
 234                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 235                 } else {
 236                         netif_stop_queue(netdev);
 237                         netif_carrier_off(netdev);
 238                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 239                 }
 240                 adapter->link_up = link_up;
 241         }
 242 }
 243
 244 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 245 static void be_rx_eqd_update(struct be_adapter *adapter)
 246 {
 247         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 248         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 249         ulong now = jiffies;
 250         u32 eqd;
 251
 252         if (!rx_eq->enable_aic)
 253                 return;
 254
 255         /* Wrapped around */
 256         if (time_before(now, stats->rx_fps_jiffies)) {
 257                 stats->rx_fps_jiffies = now;
 258                 return;
 259         }
 260
 261         /* Update once a second */
 262         if ((now - stats->rx_fps_jiffies) < HZ)
 263                 return;
 264
 265         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 266                         ((now - stats->rx_fps_jiffies) / HZ);
 267
 268         stats->rx_fps_jiffies = now;
 269         stats->be_prev_rx_frags = stats->be_rx_frags;
 270         eqd = stats->be_rx_fps / 110000;
 271         eqd = eqd << 3;
 272         if (eqd > rx_eq->max_eqd)
 273                 eqd = rx_eq->max_eqd;
 274         if (eqd < rx_eq->min_eqd)
 275                 eqd = rx_eq->min_eqd;
 276         if (eqd < 10)
 277                 eqd = 0;
 278         if (eqd != rx_eq->cur_eqd)
 279                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 280
 281         rx_eq->cur_eqd = eqd;
 282 }
 283
 284 static struct net_device_stats *be_get_stats(struct net_device *dev)
 285 {
 286         return &dev->stats;
 287 }
 288
 289 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 290 {
 291         u64 rate = bytes;
 292
 293         do_div(rate, ticks / HZ);
 294         rate <<= 3;                     /* bytes/sec -> bits/sec */
 295         do_div(rate, 1000000ul);        /* MB/Sec */
 296
 297         return rate;
 298 }
 299
 300 static void be_tx_rate_update(struct be_adapter *adapter)
 301 {
 302         struct be_drvr_stats *stats = drvr_stats(adapter);
 303         ulong now = jiffies;
 304
 305         /* Wrapped around? */
 306         if (time_before(now, stats->be_tx_jiffies)) {
 307                 stats->be_tx_jiffies = now;
 308                 return;
 309         }
 310
 311         /* Update tx rate once in two seconds */
 312         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 313                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 314                                                   - stats->be_tx_bytes_prev,
 315                                                  now - stats->be_tx_jiffies);
 316                 stats->be_tx_jiffies = now;
 317                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 318         }
 319 }
 320
 321 static void be_tx_stats_update(struct be_adapter *adapter,
 322                         u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
 323 {
 324         struct be_drvr_stats *stats = drvr_stats(adapter);
 325         stats->be_tx_reqs++;
 326         stats->be_tx_wrbs += wrb_cnt;
 327         stats->be_tx_bytes += copied;
 328         stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
 329         if (stopped)
 330                 stats->be_tx_stops++;
 331 }
 332
 333 /* Determine number of WRB entries needed to xmit data in an skb */
 334 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 335 {
 336         int cnt = (skb->len > skb->data_len);
 337
 338         cnt += skb_shinfo(skb)->nr_frags;
 339
 340         /* to account for hdr wrb */
 341         cnt++;
 342         if (cnt & 1) {
 343                 /* add a dummy to make it an even num */
 344                 cnt++;
 345                 *dummy = true;
 346         } else
 347                 *dummy = false;
 348         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 349         return cnt;
 350 }
 351
 352 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 353 {
 354         wrb->frag_pa_hi = upper_32_bits(addr);
 355         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 356         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 357 }
 358
 359 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 360                 bool vlan, u32 wrb_cnt, u32 len)
 361 {
 362         memset(hdr, 0, sizeof(*hdr));
 363
 364         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 365
 366         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 367                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 368                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 369                         hdr, skb_shinfo(skb)->gso_size);
 370         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 371                 if (is_tcp_pkt(skb))
 372                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 373                 else if (is_udp_pkt(skb))
 374                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 375         }
 376
 377         if (vlan && vlan_tx_tag_present(skb)) {
 378                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 379                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 380                         hdr, vlan_tx_tag_get(skb));
 381         }
 382
 383         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 384         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 385         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 386         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 387 }
 388
 389 static void unmap_tx_frag(struct pci_dev *pdev, struct be_eth_wrb *wrb,
 390                 bool unmap_single)
 391 {
 392         dma_addr_t dma;
 393
 394         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 395
 396         dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
 397         if (dma != 0) {
 398                 if (unmap_single)
 399                         pci_unmap_single(pdev, dma, wrb->frag_len,
 400                                 PCI_DMA_TODEVICE);
 401                 else
 402                         pci_unmap_page(pdev, dma, wrb->frag_len,
 403                                 PCI_DMA_TODEVICE);
 404         }
 405 }
 406
 407 static int make_tx_wrbs(struct be_adapter *adapter,
 408                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 409 {
 410         dma_addr_t busaddr;
 411         int i, copied = 0;
 412         struct pci_dev *pdev = adapter->pdev;
 413         struct sk_buff *first_skb = skb;
 414         struct be_queue_info *txq = &adapter->tx_obj.q;
 415         struct be_eth_wrb *wrb;
 416         struct be_eth_hdr_wrb *hdr;
 417         bool map_single = false;
 418         u16 map_head;
 419
 420         hdr = queue_head_node(txq);
 421         queue_head_inc(txq);
 422         map_head = txq->head;
 423
 424         if (skb->len > skb->data_len) {
 425                 int len = skb->len - skb->data_len;
 426                 busaddr = pci_map_single(pdev, skb->data, len,
 427                                          PCI_DMA_TODEVICE);
 428                 if (pci_dma_mapping_error(pdev, busaddr))
 429                         goto dma_err;
 430                 map_single = true;
 431                 wrb = queue_head_node(txq);
 432                 wrb_fill(wrb, busaddr, len);
 433                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 434                 queue_head_inc(txq);
 435                 copied += len;
 436         }
 437
 438         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 439                 struct skb_frag_struct *frag =
 440                         &skb_shinfo(skb)->frags[i];
 441                 busaddr = pci_map_page(pdev, frag->page,
 442                                        frag->page_offset,
 443                                        frag->size, PCI_DMA_TODEVICE);
 444                 if (pci_dma_mapping_error(pdev, busaddr))
 445                         goto dma_err;
 446                 wrb = queue_head_node(txq);
 447                 wrb_fill(wrb, busaddr, frag->size);
 448                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 449                 queue_head_inc(txq);
 450                 copied += frag->size;
 451         }
 452
 453         if (dummy_wrb) {
 454                 wrb = queue_head_node(txq);
 455                 wrb_fill(wrb, 0, 0);
 456                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 457                 queue_head_inc(txq);
 458         }
 459
 460         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 461                 wrb_cnt, copied);
 462         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 463
 464         return copied;
 465 dma_err:
 466         txq->head = map_head;
 467         while (copied) {
 468                 wrb = queue_head_node(txq);
 469                 unmap_tx_frag(pdev, wrb, map_single);
 470                 map_single = false;
 471                 copied -= wrb->frag_len;
 472                 queue_head_inc(txq);
 473         }
 474         return 0;
 475 }
 476
 477 static netdev_tx_t be_xmit(struct sk_buff *skb,
 478                         struct net_device *netdev)
 479 {
 480         struct be_adapter *adapter = netdev_priv(netdev);
 481         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 482         struct be_queue_info *txq = &tx_obj->q;
 483         u32 wrb_cnt = 0, copied = 0;
 484         u32 start = txq->head;
 485         bool dummy_wrb, stopped = false;
 486
 487         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 488
 489         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 490         if (copied) {
 491                 /* record the sent skb in the sent_skb table */
 492                 BUG_ON(tx_obj->sent_skb_list[start]);
 493                 tx_obj->sent_skb_list[start] = skb;
 494
 495                 /* Ensure txq has space for the next skb; Else stop the queue
 496                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 497                  * tx compls of the current transmit which'll wake up the queue
 498                  */
 499                 atomic_add(wrb_cnt, &txq->used);
 500                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 501                                                                 txq->len) {
 502                         netif_stop_queue(netdev);
 503                         stopped = true;
 504                 }
 505
 506                 be_txq_notify(adapter, txq->id, wrb_cnt);
 507
 508                 be_tx_stats_update(adapter, wrb_cnt, copied,
 509                                 skb_shinfo(skb)->gso_segs, stopped);
 510         } else {
 511                 txq->head = start;
 512                 dev_kfree_skb_any(skb);
 513         }
 514         return NETDEV_TX_OK;
 515 }
 516
 517 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 518 {
 519         struct be_adapter *adapter = netdev_priv(netdev);
 520         if (new_mtu < BE_MIN_MTU ||
 521                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 522                                         (ETH_HLEN + ETH_FCS_LEN))) {
 523                 dev_info(&adapter->pdev->dev,
 524                         "MTU must be between %d and %d bytes\n",
 525                         BE_MIN_MTU,
 526                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 527                 return -EINVAL;
 528         }
 529         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 530                         netdev->mtu, new_mtu);
 531         netdev->mtu = new_mtu;
 532         return 0;
 533 }
 534
 535 /*
 536  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 537  * If the user configures more, place BE in vlan promiscuous mode.
 538  */
 539 static int be_vid_config(struct be_adapter *adapter)
 540 {
 541         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 542         u16 ntags = 0, i;
 543         int status = 0;
 544
 545         if (adapter->vlans_added <= adapter->max_vlans)  {
 546                 /* Construct VLAN Table to give to HW */
 547                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 548                         if (adapter->vlan_tag[i]) {
 549                                 vtag[ntags] = cpu_to_le16(i);
 550                                 ntags++;
 551                         }
 552                 }
 553                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 554                                         vtag, ntags, 1, 0);
 555         } else {
 556                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 557                                         NULL, 0, 1, 1);
 558         }
 559         return status;
 560 }
 561
 562 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 563 {
 564         struct be_adapter *adapter = netdev_priv(netdev);
 565         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 566         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 567
 568         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 569         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 570         adapter->vlan_grp = grp;
 571         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 572         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 573 }
 574
 575 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 576 {
 577         struct be_adapter *adapter = netdev_priv(netdev);
 578
 579         adapter->vlan_tag[vid] = 1;
 580         adapter->vlans_added++;
 581         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 582                 be_vid_config(adapter);
 583 }
 584
 585 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 586 {
 587         struct be_adapter *adapter = netdev_priv(netdev);
 588
 589         adapter->vlan_tag[vid] = 0;
 590         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 591         adapter->vlans_added--;
 592         if (adapter->vlans_added <= adapter->max_vlans)
 593                 be_vid_config(adapter);
 594 }
 595
 596 static void be_set_multicast_list(struct net_device *netdev)
 597 {
 598         struct be_adapter *adapter = netdev_priv(netdev);
 599
 600         if (netdev->flags & IFF_PROMISC) {
 601                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 602                 adapter->promiscuous = true;
 603                 goto done;
 604         }
 605
 606         /* BE was previously in promiscous mode; disable it */
 607         if (adapter->promiscuous) {
 608                 adapter->promiscuous = false;
 609                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 610         }
 611
 612         /* Enable multicast promisc if num configured exceeds what we support */
 613         if (netdev->flags & IFF_ALLMULTI ||
 614             netdev_mc_count(netdev) > BE_MAX_MC) {
 615                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
 616                                 &adapter->mc_cmd_mem);
 617                 goto done;
 618         }
 619
 620         be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
 621                 &adapter->mc_cmd_mem);
 622 done:
 623         return;
 624 }
 625
 626 static void be_rx_rate_update(struct be_adapter *adapter)
 627 {
 628         struct be_drvr_stats *stats = drvr_stats(adapter);
 629         ulong now = jiffies;
 630
 631         /* Wrapped around */
 632         if (time_before(now, stats->be_rx_jiffies)) {
 633                 stats->be_rx_jiffies = now;
 634                 return;
 635         }
 636
 637         /* Update the rate once in two seconds */
 638         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 639                 return;
 640
 641         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 642                                           - stats->be_rx_bytes_prev,
 643                                          now - stats->be_rx_jiffies);
 644         stats->be_rx_jiffies = now;
 645         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 646 }
 647
 648 static void be_rx_stats_update(struct be_adapter *adapter,
 649                 u32 pktsize, u16 numfrags)
 650 {
 651         struct be_drvr_stats *stats = drvr_stats(adapter);
 652
 653         stats->be_rx_compl++;
 654         stats->be_rx_frags += numfrags;
 655         stats->be_rx_bytes += pktsize;
 656         stats->be_rx_pkts++;
 657 }
 658
 659 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 660 {
 661         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 662
 663         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 664         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 665         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 666         if (ip_version) {
 667                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 668                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 669         }
 670         ipv6_chk = (ip_version && (tcpf || udpf));
 671
 672         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 673 }
 674
 675 static struct be_rx_page_info *
 676 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 677 {
 678         struct be_rx_page_info *rx_page_info;
 679         struct be_queue_info *rxq = &adapter->rx_obj.q;
 680
 681         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 682         BUG_ON(!rx_page_info->page);
 683
 684         if (rx_page_info->last_page_user) {
 685                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 686                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 687                 rx_page_info->last_page_user = false;
 688         }
 689
 690         atomic_dec(&rxq->used);
 691         return rx_page_info;
 692 }
 693
 694 /* Throwaway the data in the Rx completion */
 695 static void be_rx_compl_discard(struct be_adapter *adapter,
 696                         struct be_eth_rx_compl *rxcp)
 697 {
 698         struct be_queue_info *rxq = &adapter->rx_obj.q;
 699         struct be_rx_page_info *page_info;
 700         u16 rxq_idx, i, num_rcvd;
 701
 702         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 703         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 704
 705         for (i = 0; i < num_rcvd; i++) {
 706                 page_info = get_rx_page_info(adapter, rxq_idx);
 707                 put_page(page_info->page);
 708                 memset(page_info, 0, sizeof(*page_info));
 709                 index_inc(&rxq_idx, rxq->len);
 710         }
 711 }
 712
 713 /*
 714  * skb_fill_rx_data forms a complete skb for an ether frame
 715  * indicated by rxcp.
 716  */
 717 static void skb_fill_rx_data(struct be_adapter *adapter,
 718                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
 719                         u16 num_rcvd)
 720 {
 721         struct be_queue_info *rxq = &adapter->rx_obj.q;
 722         struct be_rx_page_info *page_info;
 723         u16 rxq_idx, i, j;
 724         u32 pktsize, hdr_len, curr_frag_len, size;
 725         u8 *start;
 726
 727         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 728         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 729
 730         page_info = get_rx_page_info(adapter, rxq_idx);
 731
 732         start = page_address(page_info->page) + page_info->page_offset;
 733         prefetch(start);
 734
 735         /* Copy data in the first descriptor of this completion */
 736         curr_frag_len = min(pktsize, rx_frag_size);
 737
 738         /* Copy the header portion into skb_data */
 739         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 740         memcpy(skb->data, start, hdr_len);
 741         skb->len = curr_frag_len;
 742         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 743                 /* Complete packet has now been moved to data */
 744                 put_page(page_info->page);
 745                 skb->data_len = 0;
 746                 skb->tail += curr_frag_len;
 747         } else {
 748                 skb_shinfo(skb)->nr_frags = 1;
 749                 skb_shinfo(skb)->frags[0].page = page_info->page;
 750                 skb_shinfo(skb)->frags[0].page_offset =
 751                                         page_info->page_offset + hdr_len;
 752                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 753                 skb->data_len = curr_frag_len - hdr_len;
 754                 skb->tail += hdr_len;
 755         }
 756         page_info->page = NULL;
 757
 758         if (pktsize <= rx_frag_size) {
 759                 BUG_ON(num_rcvd != 1);
 760                 goto done;
 761         }
 762
 763         /* More frags present for this completion */
 764         size = pktsize;
 765         for (i = 1, j = 0; i < num_rcvd; i++) {
 766                 size -= curr_frag_len;
 767                 index_inc(&rxq_idx, rxq->len);
 768                 page_info = get_rx_page_info(adapter, rxq_idx);
 769
 770                 curr_frag_len = min(size, rx_frag_size);
 771
 772                 /* Coalesce all frags from the same physical page in one slot */
 773                 if (page_info->page_offset == 0) {
 774                         /* Fresh page */
 775                         j++;
 776                         skb_shinfo(skb)->frags[j].page = page_info->page;
 777                         skb_shinfo(skb)->frags[j].page_offset =
 778                                                         page_info->page_offset;
 779                         skb_shinfo(skb)->frags[j].size = 0;
 780                         skb_shinfo(skb)->nr_frags++;
 781                 } else {
 782                         put_page(page_info->page);
 783                 }
 784
 785                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 786                 skb->len += curr_frag_len;
 787                 skb->data_len += curr_frag_len;
 788
 789                 page_info->page = NULL;
 790         }
 791         BUG_ON(j > MAX_SKB_FRAGS);
 792
 793 done:
 794         be_rx_stats_update(adapter, pktsize, num_rcvd);
 795         return;
 796 }
 797
 798 /* Process the RX completion indicated by rxcp when GRO is disabled */
 799 static void be_rx_compl_process(struct be_adapter *adapter,
 800                         struct be_eth_rx_compl *rxcp)
 801 {
 802         struct sk_buff *skb;
 803         u32 vlanf, vid;
 804         u16 num_rcvd;
 805         u8 vtm;
 806
 807         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 808         /* Is it a flush compl that has no data */
 809         if (unlikely(num_rcvd == 0))
 810                 return;
 811
 812         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 813         if (unlikely(!skb)) {
 814                 if (net_ratelimit())
 815                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 816                 be_rx_compl_discard(adapter, rxcp);
 817                 return;
 818         }
 819
 820         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 821
 822         if (do_pkt_csum(rxcp, adapter->rx_csum))
 823                 skb->ip_summed = CHECKSUM_NONE;
 824         else
 825                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 826
 827         skb->truesize = skb->len + sizeof(struct sk_buff);
 828         skb->protocol = eth_type_trans(skb, adapter->netdev);
 829         skb->dev = adapter->netdev;
 830
 831         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 832         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 833
 834         /* vlanf could be wrongly set in some cards.
 835          * ignore if vtm is not set */
 836         if ((adapter->cap & 0x400) && !vtm)
 837                 vlanf = 0;
 838
 839         if (unlikely(vlanf)) {
 840                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 841                         kfree_skb(skb);
 842                         return;
 843                 }
 844                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 845                 vid = be16_to_cpu(vid);
 846                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 847         } else {
 848                 netif_receive_skb(skb);
 849         }
 850
 851         return;
 852 }
 853
 854 /* Process the RX completion indicated by rxcp when GRO is enabled */
 855 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 856                         struct be_eth_rx_compl *rxcp)
 857 {
 858         struct be_rx_page_info *page_info;
 859         struct sk_buff *skb = NULL;
 860         struct be_queue_info *rxq = &adapter->rx_obj.q;
 861         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 862         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 863         u16 i, rxq_idx = 0, vid, j;
 864         u8 vtm;
 865
 866         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 867         /* Is it a flush compl that has no data */
 868         if (unlikely(num_rcvd == 0))
 869                 return;
 870
 871         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 872         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 873         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 874         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 875
 876         /* vlanf could be wrongly set in some cards.
 877          * ignore if vtm is not set */
 878         if ((adapter->cap & 0x400) && !vtm)
 879                 vlanf = 0;
 880
 881         skb = napi_get_frags(&eq_obj->napi);
 882         if (!skb) {
 883                 be_rx_compl_discard(adapter, rxcp);
 884                 return;
 885         }
 886
 887         remaining = pkt_size;
 888         for (i = 0, j = -1; i < num_rcvd; i++) {
 889                 page_info = get_rx_page_info(adapter, rxq_idx);
 890
 891                 curr_frag_len = min(remaining, rx_frag_size);
 892
 893                 /* Coalesce all frags from the same physical page in one slot */
 894                 if (i == 0 || page_info->page_offset == 0) {
 895                         /* First frag or Fresh page */
 896                         j++;
 897                         skb_shinfo(skb)->frags[j].page = page_info->page;
 898                         skb_shinfo(skb)->frags[j].page_offset =
 899                                                         page_info->page_offset;
 900                         skb_shinfo(skb)->frags[j].size = 0;
 901                 } else {
 902                         put_page(page_info->page);
 903                 }
 904                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 905
 906                 remaining -= curr_frag_len;
 907                 index_inc(&rxq_idx, rxq->len);
 908                 memset(page_info, 0, sizeof(*page_info));
 909         }
 910         BUG_ON(j > MAX_SKB_FRAGS);
 911
 912         skb_shinfo(skb)->nr_frags = j + 1;
 913         skb->len = pkt_size;
 914         skb->data_len = pkt_size;
 915         skb->truesize += pkt_size;
 916         skb->ip_summed = CHECKSUM_UNNECESSARY;
 917
 918         if (likely(!vlanf)) {
 919                 napi_gro_frags(&eq_obj->napi);
 920         } else {
 921                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 922                 vid = be16_to_cpu(vid);
 923
 924                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 925                         return;
 926
 927                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 928         }
 929
 930         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 931         return;
 932 }
 933
 934 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 935 {
 936         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 937
 938         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 939                 return NULL;
 940
 941         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 942
 943         queue_tail_inc(&adapter->rx_obj.cq);
 944         return rxcp;
 945 }
 946
 947 /* To reset the valid bit, we need to reset the whole word as
 948  * when walking the queue the valid entries are little-endian
 949  * and invalid entries are host endian
 950  */
 951 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 952 {
 953         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 954 }
 955
 956 static inline struct page *be_alloc_pages(u32 size)
 957 {
 958         gfp_t alloc_flags = GFP_ATOMIC;
 959         u32 order = get_order(size);
 960         if (order > 0)
 961                 alloc_flags |= __GFP_COMP;
 962         return  alloc_pages(alloc_flags, order);
 963 }
 964
 965 /*
 966  * Allocate a page, split it to fragments of size rx_frag_size and post as
 967  * receive buffers to BE
 968  */
 969 static void be_post_rx_frags(struct be_adapter *adapter)
 970 {
 971         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 972         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
 973         struct be_queue_info *rxq = &adapter->rx_obj.q;
 974         struct page *pagep = NULL;
 975         struct be_eth_rx_d *rxd;
 976         u64 page_dmaaddr = 0, frag_dmaaddr;
 977         u32 posted, page_offset = 0;
 978
 979         page_info = &page_info_tbl[rxq->head];
 980         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 981                 if (!pagep) {
 982                         pagep = be_alloc_pages(adapter->big_page_size);
 983                         if (unlikely(!pagep)) {
 984                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 985                                 break;
 986                         }
 987                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 988                                                 adapter->big_page_size,
 989                                                 PCI_DMA_FROMDEVICE);
 990                         page_info->page_offset = 0;
 991                 } else {
 992                         get_page(pagep);
 993                         page_info->page_offset = page_offset + rx_frag_size;
 994                 }
 995                 page_offset = page_info->page_offset;
 996                 page_info->page = pagep;
 997                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 998                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 999
1000                 rxd = queue_head_node(rxq);
1001                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1002                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1003
1004                 /* Any space left in the current big page for another frag? */
1005                 if ((page_offset + rx_frag_size + rx_frag_size) >
1006                                         adapter->big_page_size) {
1007                         pagep = NULL;
1008                         page_info->last_page_user = true;
1009                 }
1010
1011                 prev_page_info = page_info;
1012                 queue_head_inc(rxq);
1013                 page_info = &page_info_tbl[rxq->head];
1014         }
1015         if (pagep)
1016                 prev_page_info->last_page_user = true;
1017
1018         if (posted) {
1019                 atomic_add(posted, &rxq->used);
1020                 be_rxq_notify(adapter, rxq->id, posted);
1021         } else if (atomic_read(&rxq->used) == 0) {
1022                 /* Let be_worker replenish when memory is available */
1023                 adapter->rx_post_starved = true;
1024         }
1025
1026         return;
1027 }
1028
1029 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1030 {
1031         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1032
1033         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1034                 return NULL;
1035
1036         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1037
1038         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1039
1040         queue_tail_inc(tx_cq);
1041         return txcp;
1042 }
1043
1044 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1045 {
1046         struct be_queue_info *txq = &adapter->tx_obj.q;
1047         struct be_eth_wrb *wrb;
1048         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1049         struct sk_buff *sent_skb;
1050         u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1051         bool unmap_skb_hdr = true;
1052
1053         sent_skb = sent_skbs[txq->tail];
1054         BUG_ON(!sent_skb);
1055         sent_skbs[txq->tail] = NULL;
1056
1057         /* skip header wrb */
1058         queue_tail_inc(txq);
1059
1060         do {
1061                 cur_index = txq->tail;
1062                 wrb = queue_tail_node(txq);
1063                 unmap_tx_frag(adapter->pdev, wrb, (unmap_skb_hdr &&
1064                                         sent_skb->len > sent_skb->data_len));
1065                 unmap_skb_hdr = false;
1066
1067                 num_wrbs++;
1068                 queue_tail_inc(txq);
1069         } while (cur_index != last_index);
1070
1071         atomic_sub(num_wrbs, &txq->used);
1072
1073         kfree_skb(sent_skb);
1074 }
1075
1076 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1077 {
1078         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1079
1080         if (!eqe->evt)
1081                 return NULL;
1082
1083         eqe->evt = le32_to_cpu(eqe->evt);
1084         queue_tail_inc(&eq_obj->q);
1085         return eqe;
1086 }
1087
1088 static int event_handle(struct be_adapter *adapter,
1089                         struct be_eq_obj *eq_obj)
1090 {
1091         struct be_eq_entry *eqe;
1092         u16 num = 0;
1093
1094         while ((eqe = event_get(eq_obj)) != NULL) {
1095                 eqe->evt = 0;
1096                 num++;
1097         }
1098
1099         /* Deal with any spurious interrupts that come
1100          * without events
1101          */
1102         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1103         if (num)
1104                 napi_schedule(&eq_obj->napi);
1105
1106         return num;
1107 }
1108
1109 /* Just read and notify events without processing them.
1110  * Used at the time of destroying event queues */
1111 static void be_eq_clean(struct be_adapter *adapter,
1112                         struct be_eq_obj *eq_obj)
1113 {
1114         struct be_eq_entry *eqe;
1115         u16 num = 0;
1116
1117         while ((eqe = event_get(eq_obj)) != NULL) {
1118                 eqe->evt = 0;
1119                 num++;
1120         }
1121
1122         if (num)
1123                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1124 }
1125
1126 static void be_rx_q_clean(struct be_adapter *adapter)
1127 {
1128         struct be_rx_page_info *page_info;
1129         struct be_queue_info *rxq = &adapter->rx_obj.q;
1130         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1131         struct be_eth_rx_compl *rxcp;
1132         u16 tail;
1133
1134         /* First cleanup pending rx completions */
1135         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1136                 be_rx_compl_discard(adapter, rxcp);
1137                 be_rx_compl_reset(rxcp);
1138                 be_cq_notify(adapter, rx_cq->id, true, 1);
1139         }
1140
1141         /* Then free posted rx buffer that were not used */
1142         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1143         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1144                 page_info = get_rx_page_info(adapter, tail);
1145                 put_page(page_info->page);
1146                 memset(page_info, 0, sizeof(*page_info));
1147         }
1148         BUG_ON(atomic_read(&rxq->used));
1149 }
1150
1151 static void be_tx_compl_clean(struct be_adapter *adapter)
1152 {
1153         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1154         struct be_queue_info *txq = &adapter->tx_obj.q;
1155         struct be_eth_tx_compl *txcp;
1156         u16 end_idx, cmpl = 0, timeo = 0;
1157         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1158         struct sk_buff *sent_skb;
1159         bool dummy_wrb;
1160
1161         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1162         do {
1163                 while ((txcp = be_tx_compl_get(tx_cq))) {
1164                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1165                                         wrb_index, txcp);
1166                         be_tx_compl_process(adapter, end_idx);
1167                         cmpl++;
1168                 }
1169                 if (cmpl) {
1170                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1171                         cmpl = 0;
1172                 }
1173
1174                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1175                         break;
1176
1177                 mdelay(1);
1178         } while (true);
1179
1180         if (atomic_read(&txq->used))
1181                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1182                         atomic_read(&txq->used));
1183
1184         /* free posted tx for which compls will never arrive */
1185         while (atomic_read(&txq->used)) {
1186                 sent_skb = sent_skbs[txq->tail];
1187                 end_idx = txq->tail;
1188                 index_adv(&end_idx,
1189                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1190                 be_tx_compl_process(adapter, end_idx);
1191         }
1192 }
1193
1194 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1195 {
1196         struct be_queue_info *q;
1197
1198         q = &adapter->mcc_obj.q;
1199         if (q->created)
1200                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1201         be_queue_free(adapter, q);
1202
1203         q = &adapter->mcc_obj.cq;
1204         if (q->created)
1205                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1206         be_queue_free(adapter, q);
1207 }
1208
1209 /* Must be called only after TX qs are created as MCC shares TX EQ */
1210 static int be_mcc_queues_create(struct be_adapter *adapter)
1211 {
1212         struct be_queue_info *q, *cq;
1213
1214         /* Alloc MCC compl queue */
1215         cq = &adapter->mcc_obj.cq;
1216         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1217                         sizeof(struct be_mcc_compl)))
1218                 goto err;
1219
1220         /* Ask BE to create MCC compl queue; share TX's eq */
1221         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1222                 goto mcc_cq_free;
1223
1224         /* Alloc MCC queue */
1225         q = &adapter->mcc_obj.q;
1226         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1227                 goto mcc_cq_destroy;
1228
1229         /* Ask BE to create MCC queue */
1230         if (be_cmd_mccq_create(adapter, q, cq))
1231                 goto mcc_q_free;
1232
1233         return 0;
1234
1235 mcc_q_free:
1236         be_queue_free(adapter, q);
1237 mcc_cq_destroy:
1238         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1239 mcc_cq_free:
1240         be_queue_free(adapter, cq);
1241 err:
1242         return -1;
1243 }
1244
1245 static void be_tx_queues_destroy(struct be_adapter *adapter)
1246 {
1247         struct be_queue_info *q;
1248
1249         q = &adapter->tx_obj.q;
1250         if (q->created)
1251                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1252         be_queue_free(adapter, q);
1253
1254         q = &adapter->tx_obj.cq;
1255         if (q->created)
1256                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1257         be_queue_free(adapter, q);
1258
1259         /* Clear any residual events */
1260         be_eq_clean(adapter, &adapter->tx_eq);
1261
1262         q = &adapter->tx_eq.q;
1263         if (q->created)
1264                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1265         be_queue_free(adapter, q);
1266 }
1267
1268 static int be_tx_queues_create(struct be_adapter *adapter)
1269 {
1270         struct be_queue_info *eq, *q, *cq;
1271
1272         adapter->tx_eq.max_eqd = 0;
1273         adapter->tx_eq.min_eqd = 0;
1274         adapter->tx_eq.cur_eqd = 96;
1275         adapter->tx_eq.enable_aic = false;
1276         /* Alloc Tx Event queue */
1277         eq = &adapter->tx_eq.q;
1278         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1279                 return -1;
1280
1281         /* Ask BE to create Tx Event queue */
1282         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1283                 goto tx_eq_free;
1284         /* Alloc TX eth compl queue */
1285         cq = &adapter->tx_obj.cq;
1286         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1287                         sizeof(struct be_eth_tx_compl)))
1288                 goto tx_eq_destroy;
1289
1290         /* Ask BE to create Tx eth compl queue */
1291         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1292                 goto tx_cq_free;
1293
1294         /* Alloc TX eth queue */
1295         q = &adapter->tx_obj.q;
1296         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1297                 goto tx_cq_destroy;
1298
1299         /* Ask BE to create Tx eth queue */
1300         if (be_cmd_txq_create(adapter, q, cq))
1301                 goto tx_q_free;
1302         return 0;
1303
1304 tx_q_free:
1305         be_queue_free(adapter, q);
1306 tx_cq_destroy:
1307         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1308 tx_cq_free:
1309         be_queue_free(adapter, cq);
1310 tx_eq_destroy:
1311         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1312 tx_eq_free:
1313         be_queue_free(adapter, eq);
1314         return -1;
1315 }
1316
1317 static void be_rx_queues_destroy(struct be_adapter *adapter)
1318 {
1319         struct be_queue_info *q;
1320
1321         q = &adapter->rx_obj.q;
1322         if (q->created) {
1323                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1324
1325                 /* After the rxq is invalidated, wait for a grace time
1326                  * of 1ms for all dma to end and the flush compl to arrive
1327                  */
1328                 mdelay(1);
1329                 be_rx_q_clean(adapter);
1330         }
1331         be_queue_free(adapter, q);
1332
1333         q = &adapter->rx_obj.cq;
1334         if (q->created)
1335                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1336         be_queue_free(adapter, q);
1337
1338         /* Clear any residual events */
1339         be_eq_clean(adapter, &adapter->rx_eq);
1340
1341         q = &adapter->rx_eq.q;
1342         if (q->created)
1343                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1344         be_queue_free(adapter, q);
1345 }
1346
1347 static int be_rx_queues_create(struct be_adapter *adapter)
1348 {
1349         struct be_queue_info *eq, *q, *cq;
1350         int rc;
1351
1352         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1353         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1354         adapter->rx_eq.min_eqd = 0;
1355         adapter->rx_eq.cur_eqd = 0;
1356         adapter->rx_eq.enable_aic = true;
1357
1358         /* Alloc Rx Event queue */
1359         eq = &adapter->rx_eq.q;
1360         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1361                                 sizeof(struct be_eq_entry));
1362         if (rc)
1363                 return rc;
1364
1365         /* Ask BE to create Rx Event queue */
1366         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1367         if (rc)
1368                 goto rx_eq_free;
1369
1370         /* Alloc RX eth compl queue */
1371         cq = &adapter->rx_obj.cq;
1372         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1373                         sizeof(struct be_eth_rx_compl));
1374         if (rc)
1375                 goto rx_eq_destroy;
1376
1377         /* Ask BE to create Rx eth compl queue */
1378         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1379         if (rc)
1380                 goto rx_cq_free;
1381
1382         /* Alloc RX eth queue */
1383         q = &adapter->rx_obj.q;
1384         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1385         if (rc)
1386                 goto rx_cq_destroy;
1387
1388         /* Ask BE to create Rx eth queue */
1389         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1390                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1391         if (rc)
1392                 goto rx_q_free;
1393
1394         return 0;
1395 rx_q_free:
1396         be_queue_free(adapter, q);
1397 rx_cq_destroy:
1398         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1399 rx_cq_free:
1400         be_queue_free(adapter, cq);
1401 rx_eq_destroy:
1402         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1403 rx_eq_free:
1404         be_queue_free(adapter, eq);
1405         return rc;
1406 }
1407
1408 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1409 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1410 {
1411         return eq_id % 8;
1412 }
1413
1414 static irqreturn_t be_intx(int irq, void *dev)
1415 {
1416         struct be_adapter *adapter = dev;
1417         int isr;
1418
1419         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1420                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1421         if (!isr)
1422                 return IRQ_NONE;
1423
1424         event_handle(adapter, &adapter->tx_eq);
1425         event_handle(adapter, &adapter->rx_eq);
1426
1427         return IRQ_HANDLED;
1428 }
1429
1430 static irqreturn_t be_msix_rx(int irq, void *dev)
1431 {
1432         struct be_adapter *adapter = dev;
1433
1434         event_handle(adapter, &adapter->rx_eq);
1435
1436         return IRQ_HANDLED;
1437 }
1438
1439 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1440 {
1441         struct be_adapter *adapter = dev;
1442
1443         event_handle(adapter, &adapter->tx_eq);
1444
1445         return IRQ_HANDLED;
1446 }
1447
1448 static inline bool do_gro(struct be_adapter *adapter,
1449                         struct be_eth_rx_compl *rxcp)
1450 {
1451         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1452         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1453
1454         if (err)
1455                 drvr_stats(adapter)->be_rxcp_err++;
1456
1457         return (tcp_frame && !err) ? true : false;
1458 }
1459
1460 int be_poll_rx(struct napi_struct *napi, int budget)
1461 {
1462         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1463         struct be_adapter *adapter =
1464                 container_of(rx_eq, struct be_adapter, rx_eq);
1465         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1466         struct be_eth_rx_compl *rxcp;
1467         u32 work_done;
1468
1469         adapter->stats.drvr_stats.be_rx_polls++;
1470         for (work_done = 0; work_done < budget; work_done++) {
1471                 rxcp = be_rx_compl_get(adapter);
1472                 if (!rxcp)
1473                         break;
1474
1475                 if (do_gro(adapter, rxcp))
1476                         be_rx_compl_process_gro(adapter, rxcp);
1477                 else
1478                         be_rx_compl_process(adapter, rxcp);
1479
1480                 be_rx_compl_reset(rxcp);
1481         }
1482
1483         /* Refill the queue */
1484         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1485                 be_post_rx_frags(adapter);
1486
1487         /* All consumed */
1488         if (work_done < budget) {
1489                 napi_complete(napi);
1490                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1491         } else {
1492                 /* More to be consumed; continue with interrupts disabled */
1493                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1494         }
1495         return work_done;
1496 }
1497
1498 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1499  * For TX/MCC we don't honour budget; consume everything
1500  */
1501 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1502 {
1503         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1504         struct be_adapter *adapter =
1505                 container_of(tx_eq, struct be_adapter, tx_eq);
1506         struct be_queue_info *txq = &adapter->tx_obj.q;
1507         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1508         struct be_eth_tx_compl *txcp;
1509         int tx_compl = 0, mcc_compl, status = 0;
1510         u16 end_idx;
1511
1512         while ((txcp = be_tx_compl_get(tx_cq))) {
1513                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1514                                 wrb_index, txcp);
1515                 be_tx_compl_process(adapter, end_idx);
1516                 tx_compl++;
1517         }
1518
1519         mcc_compl = be_process_mcc(adapter, &status);
1520
1521         napi_complete(napi);
1522
1523         if (mcc_compl) {
1524                 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1525                 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1526         }
1527
1528         if (tx_compl) {
1529                 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1530
1531                 /* As Tx wrbs have been freed up, wake up netdev queue if
1532                  * it was stopped due to lack of tx wrbs.
1533                  */
1534                 if (netif_queue_stopped(adapter->netdev) &&
1535                         atomic_read(&txq->used) < txq->len / 2) {
1536                         netif_wake_queue(adapter->netdev);
1537                 }
1538
1539                 drvr_stats(adapter)->be_tx_events++;
1540                 drvr_stats(adapter)->be_tx_compl += tx_compl;
1541         }
1542
1543         return 1;
1544 }
1545
1546 static void be_worker(struct work_struct *work)
1547 {
1548         struct be_adapter *adapter =
1549                 container_of(work, struct be_adapter, work.work);
1550
1551         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1552
1553         /* Set EQ delay */
1554         be_rx_eqd_update(adapter);
1555
1556         be_tx_rate_update(adapter);
1557         be_rx_rate_update(adapter);
1558
1559         if (adapter->rx_post_starved) {
1560                 adapter->rx_post_starved = false;
1561                 be_post_rx_frags(adapter);
1562         }
1563
1564         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1565 }
1566
1567 static void be_msix_disable(struct be_adapter *adapter)
1568 {
1569         if (adapter->msix_enabled) {
1570                 pci_disable_msix(adapter->pdev);
1571                 adapter->msix_enabled = false;
1572         }
1573 }
1574
1575 static void be_msix_enable(struct be_adapter *adapter)
1576 {
1577         int i, status;
1578
1579         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1580                 adapter->msix_entries[i].entry = i;
1581
1582         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1583                 BE_NUM_MSIX_VECTORS);
1584         if (status == 0)
1585                 adapter->msix_enabled = true;
1586         return;
1587 }
1588
1589 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1590 {
1591         return adapter->msix_entries[
1592                         be_evt_bit_get(adapter, eq_id)].vector;
1593 }
1594
1595 static int be_request_irq(struct be_adapter *adapter,
1596                 struct be_eq_obj *eq_obj,
1597                 void *handler, char *desc)
1598 {
1599         struct net_device *netdev = adapter->netdev;
1600         int vec;
1601
1602         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1603         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1604         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1605 }
1606
1607 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1608 {
1609         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1610         free_irq(vec, adapter);
1611 }
1612
1613 static int be_msix_register(struct be_adapter *adapter)
1614 {
1615         int status;
1616
1617         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1618         if (status)
1619                 goto err;
1620
1621         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1622         if (status)
1623                 goto free_tx_irq;
1624
1625         return 0;
1626
1627 free_tx_irq:
1628         be_free_irq(adapter, &adapter->tx_eq);
1629 err:
1630         dev_warn(&adapter->pdev->dev,
1631                 "MSIX Request IRQ failed - err %d\n", status);
1632         pci_disable_msix(adapter->pdev);
1633         adapter->msix_enabled = false;
1634         return status;
1635 }
1636
1637 static int be_irq_register(struct be_adapter *adapter)
1638 {
1639         struct net_device *netdev = adapter->netdev;
1640         int status;
1641
1642         if (adapter->msix_enabled) {
1643                 status = be_msix_register(adapter);
1644                 if (status == 0)
1645                         goto done;
1646         }
1647
1648         /* INTx */
1649         netdev->irq = adapter->pdev->irq;
1650         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1651                         adapter);
1652         if (status) {
1653                 dev_err(&adapter->pdev->dev,
1654                         "INTx request IRQ failed - err %d\n", status);
1655                 return status;
1656         }
1657 done:
1658         adapter->isr_registered = true;
1659         return 0;
1660 }
1661
1662 static void be_irq_unregister(struct be_adapter *adapter)
1663 {
1664         struct net_device *netdev = adapter->netdev;
1665
1666         if (!adapter->isr_registered)
1667                 return;
1668
1669         /* INTx */
1670         if (!adapter->msix_enabled) {
1671                 free_irq(netdev->irq, adapter);
1672                 goto done;
1673         }
1674
1675         /* MSIx */
1676         be_free_irq(adapter, &adapter->tx_eq);
1677         be_free_irq(adapter, &adapter->rx_eq);
1678 done:
1679         adapter->isr_registered = false;
1680         return;
1681 }
1682
1683 static int be_open(struct net_device *netdev)
1684 {
1685         struct be_adapter *adapter = netdev_priv(netdev);
1686         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1687         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1688         bool link_up;
1689         int status;
1690         u8 mac_speed;
1691         u16 link_speed;
1692
1693         /* First time posting */
1694         be_post_rx_frags(adapter);
1695
1696         napi_enable(&rx_eq->napi);
1697         napi_enable(&tx_eq->napi);
1698
1699         be_irq_register(adapter);
1700
1701         be_intr_set(adapter, true);
1702
1703         /* The evt queues are created in unarmed state; arm them */
1704         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1705         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1706
1707         /* Rx compl queue may be in unarmed state; rearm it */
1708         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1709
1710         /* Now that interrupts are on we can process async mcc */
1711         be_async_mcc_enable(adapter);
1712
1713         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1714                         &link_speed);
1715         if (status)
1716                 goto ret_sts;
1717         be_link_status_update(adapter, link_up);
1718
1719         status = be_vid_config(adapter);
1720         if (status)
1721                 goto ret_sts;
1722
1723         status = be_cmd_set_flow_control(adapter,
1724                                         adapter->tx_fc, adapter->rx_fc);
1725         if (status)
1726                 goto ret_sts;
1727
1728         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1729 ret_sts:
1730         return status;
1731 }
1732
1733 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1734 {
1735         struct be_dma_mem cmd;
1736         int status = 0;
1737         u8 mac[ETH_ALEN];
1738
1739         memset(mac, 0, ETH_ALEN);
1740
1741         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1742         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1743         if (cmd.va == NULL)
1744                 return -1;
1745         memset(cmd.va, 0, cmd.size);
1746
1747         if (enable) {
1748                 status = pci_write_config_dword(adapter->pdev,
1749                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1750                 if (status) {
1751                         dev_err(&adapter->pdev->dev,
1752                                 "Could not enable Wake-on-lan\n");
1753                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1754                                         cmd.dma);
1755                         return status;
1756                 }
1757                 status = be_cmd_enable_magic_wol(adapter,
1758                                 adapter->netdev->dev_addr, &cmd);
1759                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1760                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1761         } else {
1762                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1763                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1764                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1765         }
1766
1767         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1768         return status;
1769 }
1770
1771 static int be_setup(struct be_adapter *adapter)
1772 {
1773         struct net_device *netdev = adapter->netdev;
1774         u32 cap_flags, en_flags;
1775         int status;
1776
1777         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1778                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1779                         BE_IF_FLAGS_PROMISCUOUS |
1780                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1781         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1782                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1783
1784         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1785                         netdev->dev_addr, false/* pmac_invalid */,
1786                         &adapter->if_handle, &adapter->pmac_id);
1787         if (status != 0)
1788                 goto do_none;
1789
1790         status = be_tx_queues_create(adapter);
1791         if (status != 0)
1792                 goto if_destroy;
1793
1794         status = be_rx_queues_create(adapter);
1795         if (status != 0)
1796                 goto tx_qs_destroy;
1797
1798         status = be_mcc_queues_create(adapter);
1799         if (status != 0)
1800                 goto rx_qs_destroy;
1801
1802         adapter->link_speed = -1;
1803
1804         return 0;
1805
1806 rx_qs_destroy:
1807         be_rx_queues_destroy(adapter);
1808 tx_qs_destroy:
1809         be_tx_queues_destroy(adapter);
1810 if_destroy:
1811         be_cmd_if_destroy(adapter, adapter->if_handle);
1812 do_none:
1813         return status;
1814 }
1815
1816 static int be_clear(struct be_adapter *adapter)
1817 {
1818         be_mcc_queues_destroy(adapter);
1819         be_rx_queues_destroy(adapter);
1820         be_tx_queues_destroy(adapter);
1821
1822         be_cmd_if_destroy(adapter, adapter->if_handle);
1823
1824         /* tell fw we're done with firing cmds */
1825         be_cmd_fw_clean(adapter);
1826         return 0;
1827 }
1828
1829 static int be_close(struct net_device *netdev)
1830 {
1831         struct be_adapter *adapter = netdev_priv(netdev);
1832         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1833         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1834         int vec;
1835
1836         cancel_delayed_work_sync(&adapter->work);
1837
1838         be_async_mcc_disable(adapter);
1839
1840         netif_stop_queue(netdev);
1841         netif_carrier_off(netdev);
1842         adapter->link_up = false;
1843
1844         be_intr_set(adapter, false);
1845
1846         if (adapter->msix_enabled) {
1847                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1848                 synchronize_irq(vec);
1849                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1850                 synchronize_irq(vec);
1851         } else {
1852                 synchronize_irq(netdev->irq);
1853         }
1854         be_irq_unregister(adapter);
1855
1856         napi_disable(&rx_eq->napi);
1857         napi_disable(&tx_eq->napi);
1858
1859         /* Wait for all pending tx completions to arrive so that
1860          * all tx skbs are freed.
1861          */
1862         be_tx_compl_clean(adapter);
1863
1864         return 0;
1865 }
1866
1867 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1868 char flash_cookie[2][16] =      {"*** SE FLAS",
1869                                 "H DIRECTORY *** "};
1870
1871 static bool be_flash_redboot(struct be_adapter *adapter,
1872                         const u8 *p, u32 img_start, int image_size,
1873                         int hdr_size)
1874 {
1875         u32 crc_offset;
1876         u8 flashed_crc[4];
1877         int status;
1878
1879         crc_offset = hdr_size + img_start + image_size - 4;
1880
1881         p += crc_offset;
1882
1883         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1884                         (img_start + image_size - 4));
1885         if (status) {
1886                 dev_err(&adapter->pdev->dev,
1887                 "could not get crc from flash, not flashing redboot\n");
1888                 return false;
1889         }
1890
1891         /*update redboot only if crc does not match*/
1892         if (!memcmp(flashed_crc, p, 4))
1893                 return false;
1894         else
1895                 return true;
1896 }
1897
1898 static int be_flash_data(struct be_adapter *adapter,
1899                         const struct firmware *fw,
1900                         struct be_dma_mem *flash_cmd, int num_of_images)
1901
1902 {
1903         int status = 0, i, filehdr_size = 0;
1904         u32 total_bytes = 0, flash_op;
1905         int num_bytes;
1906         const u8 *p = fw->data;
1907         struct be_cmd_write_flashrom *req = flash_cmd->va;
1908         struct flash_comp *pflashcomp;
1909         int num_comp;
1910
1911         struct flash_comp gen3_flash_types[9] = {
1912                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
1913                         FLASH_IMAGE_MAX_SIZE_g3},
1914                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
1915                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
1916                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
1917                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1918                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
1919                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1920                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
1921                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
1922                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
1923                         FLASH_IMAGE_MAX_SIZE_g3},
1924                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
1925                         FLASH_IMAGE_MAX_SIZE_g3},
1926                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
1927                         FLASH_IMAGE_MAX_SIZE_g3},
1928                 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
1929                         FLASH_NCSI_IMAGE_MAX_SIZE_g3}
1930         };
1931         struct flash_comp gen2_flash_types[8] = {
1932                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
1933                         FLASH_IMAGE_MAX_SIZE_g2},
1934                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
1935                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
1936                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
1937                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1938                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
1939                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1940                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
1941                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
1942                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
1943                         FLASH_IMAGE_MAX_SIZE_g2},
1944                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
1945                         FLASH_IMAGE_MAX_SIZE_g2},
1946                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
1947                          FLASH_IMAGE_MAX_SIZE_g2}
1948         };
1949
1950         if (adapter->generation == BE_GEN3) {
1951                 pflashcomp = gen3_flash_types;
1952                 filehdr_size = sizeof(struct flash_file_hdr_g3);
1953                 num_comp = 9;
1954         } else {
1955                 pflashcomp = gen2_flash_types;
1956                 filehdr_size = sizeof(struct flash_file_hdr_g2);
1957                 num_comp = 8;
1958         }
1959         for (i = 0; i < num_comp; i++) {
1960                 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
1961                                 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
1962                         continue;
1963                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
1964                         (!be_flash_redboot(adapter, fw->data,
1965                          pflashcomp[i].offset, pflashcomp[i].size,
1966                          filehdr_size)))
1967                         continue;
1968                 p = fw->data;
1969                 p += filehdr_size + pflashcomp[i].offset
1970                         + (num_of_images * sizeof(struct image_hdr));
1971         if (p + pflashcomp[i].size > fw->data + fw->size)
1972                 return -1;
1973         total_bytes = pflashcomp[i].size;
1974                 while (total_bytes) {
1975                         if (total_bytes > 32*1024)
1976                                 num_bytes = 32*1024;
1977                         else
1978                                 num_bytes = total_bytes;
1979                         total_bytes -= num_bytes;
1980
1981                         if (!total_bytes)
1982                                 flash_op = FLASHROM_OPER_FLASH;
1983                         else
1984                                 flash_op = FLASHROM_OPER_SAVE;
1985                         memcpy(req->params.data_buf, p, num_bytes);
1986                         p += num_bytes;
1987                         status = be_cmd_write_flashrom(adapter, flash_cmd,
1988                                 pflashcomp[i].optype, flash_op, num_bytes);
1989                         if (status) {
1990                                 dev_err(&adapter->pdev->dev,
1991                                         "cmd to write to flash rom failed.\n");
1992                                 return -1;
1993                         }
1994                         yield();
1995                 }
1996         }
1997         return 0;
1998 }
1999
2000 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2001 {
2002         if (fhdr == NULL)
2003                 return 0;
2004         if (fhdr->build[0] == '3')
2005                 return BE_GEN3;
2006         else if (fhdr->build[0] == '2')
2007                 return BE_GEN2;
2008         else
2009                 return 0;
2010 }
2011
2012 int be_load_fw(struct be_adapter *adapter, u8 *func)
2013 {
2014         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2015         const struct firmware *fw;
2016         struct flash_file_hdr_g2 *fhdr;
2017         struct flash_file_hdr_g3 *fhdr3;
2018         struct image_hdr *img_hdr_ptr = NULL;
2019         struct be_dma_mem flash_cmd;
2020         int status, i = 0;
2021         const u8 *p;
2022
2023         strcpy(fw_file, func);
2024
2025         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2026         if (status)
2027                 goto fw_exit;
2028
2029         p = fw->data;
2030         fhdr = (struct flash_file_hdr_g2 *) p;
2031         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2032
2033         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2034         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2035                                         &flash_cmd.dma);
2036         if (!flash_cmd.va) {
2037                 status = -ENOMEM;
2038                 dev_err(&adapter->pdev->dev,
2039                         "Memory allocation failure while flashing\n");
2040                 goto fw_exit;
2041         }
2042
2043         if ((adapter->generation == BE_GEN3) &&
2044                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2045                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2046                 for (i = 0; i < fhdr3->num_imgs; i++) {
2047                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2048                                         (sizeof(struct flash_file_hdr_g3) +
2049                                         i * sizeof(struct image_hdr)));
2050                         if (img_hdr_ptr->imageid == 1) {
2051                                 status = be_flash_data(adapter, fw,
2052                                                 &flash_cmd, fhdr3->num_imgs);
2053                         }
2054
2055                 }
2056         } else if ((adapter->generation == BE_GEN2) &&
2057                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2058                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2059         } else {
2060                 dev_err(&adapter->pdev->dev,
2061                         "UFI and Interface are not compatible for flashing\n");
2062                 status = -1;
2063         }
2064
2065         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2066                                 flash_cmd.dma);
2067         if (status) {
2068                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2069                 goto fw_exit;
2070         }
2071
2072         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2073
2074 fw_exit:
2075         release_firmware(fw);
2076         return status;
2077 }
2078
2079 static struct net_device_ops be_netdev_ops = {
2080         .ndo_open               = be_open,
2081         .ndo_stop               = be_close,
2082         .ndo_start_xmit         = be_xmit,
2083         .ndo_get_stats          = be_get_stats,
2084         .ndo_set_rx_mode        = be_set_multicast_list,
2085         .ndo_set_mac_address    = be_mac_addr_set,
2086         .ndo_change_mtu         = be_change_mtu,
2087         .ndo_validate_addr      = eth_validate_addr,
2088         .ndo_vlan_rx_register   = be_vlan_register,
2089         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2090         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2091 };
2092
2093 static void be_netdev_init(struct net_device *netdev)
2094 {
2095         struct be_adapter *adapter = netdev_priv(netdev);
2096
2097         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2098                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2099                 NETIF_F_GRO;
2100
2101         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2102
2103         netdev->flags |= IFF_MULTICAST;
2104
2105         adapter->rx_csum = true;
2106
2107         /* Default settings for Rx and Tx flow control */
2108         adapter->rx_fc = true;
2109         adapter->tx_fc = true;
2110
2111         netif_set_gso_max_size(netdev, 65535);
2112
2113         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2114
2115         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2116
2117         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2118                 BE_NAPI_WEIGHT);
2119         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2120                 BE_NAPI_WEIGHT);
2121
2122         netif_carrier_off(netdev);
2123         netif_stop_queue(netdev);
2124 }
2125
2126 static void be_unmap_pci_bars(struct be_adapter *adapter)
2127 {
2128         if (adapter->csr)
2129                 iounmap(adapter->csr);
2130         if (adapter->db)
2131                 iounmap(adapter->db);
2132         if (adapter->pcicfg)
2133                 iounmap(adapter->pcicfg);
2134 }
2135
2136 static int be_map_pci_bars(struct be_adapter *adapter)
2137 {
2138         u8 __iomem *addr;
2139         int pcicfg_reg;
2140
2141         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2142                         pci_resource_len(adapter->pdev, 2));
2143         if (addr == NULL)
2144                 return -ENOMEM;
2145         adapter->csr = addr;
2146
2147         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2148                         128 * 1024);
2149         if (addr == NULL)
2150                 goto pci_map_err;
2151         adapter->db = addr;
2152
2153         if (adapter->generation == BE_GEN2)
2154                 pcicfg_reg = 1;
2155         else
2156                 pcicfg_reg = 0;
2157
2158         addr = ioremap_nocache(pci_resource_start(adapter->pdev, pcicfg_reg),
2159                         pci_resource_len(adapter->pdev, pcicfg_reg));
2160         if (addr == NULL)
2161                 goto pci_map_err;
2162         adapter->pcicfg = addr;
2163
2164         return 0;
2165 pci_map_err:
2166         be_unmap_pci_bars(adapter);
2167         return -ENOMEM;
2168 }
2169
2170
2171 static void be_ctrl_cleanup(struct be_adapter *adapter)
2172 {
2173         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2174
2175         be_unmap_pci_bars(adapter);
2176
2177         if (mem->va)
2178                 pci_free_consistent(adapter->pdev, mem->size,
2179                         mem->va, mem->dma);
2180
2181         mem = &adapter->mc_cmd_mem;
2182         if (mem->va)
2183                 pci_free_consistent(adapter->pdev, mem->size,
2184                         mem->va, mem->dma);
2185 }
2186
2187 static int be_ctrl_init(struct be_adapter *adapter)
2188 {
2189         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2190         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2191         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2192         int status;
2193
2194         status = be_map_pci_bars(adapter);
2195         if (status)
2196                 goto done;
2197
2198         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2199         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2200                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2201         if (!mbox_mem_alloc->va) {
2202                 status = -ENOMEM;
2203                 goto unmap_pci_bars;
2204         }
2205
2206         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2207         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2208         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2209         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2210
2211         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2212         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2213                         &mc_cmd_mem->dma);
2214         if (mc_cmd_mem->va == NULL) {
2215                 status = -ENOMEM;
2216                 goto free_mbox;
2217         }
2218         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2219
2220         spin_lock_init(&adapter->mbox_lock);
2221         spin_lock_init(&adapter->mcc_lock);
2222         spin_lock_init(&adapter->mcc_cq_lock);
2223
2224         pci_save_state(adapter->pdev);
2225         return 0;
2226
2227 free_mbox:
2228         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2229                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2230
2231 unmap_pci_bars:
2232         be_unmap_pci_bars(adapter);
2233
2234 done:
2235         return status;
2236 }
2237
2238 static void be_stats_cleanup(struct be_adapter *adapter)
2239 {
2240         struct be_stats_obj *stats = &adapter->stats;
2241         struct be_dma_mem *cmd = &stats->cmd;
2242
2243         if (cmd->va)
2244                 pci_free_consistent(adapter->pdev, cmd->size,
2245                         cmd->va, cmd->dma);
2246 }
2247
2248 static int be_stats_init(struct be_adapter *adapter)
2249 {
2250         struct be_stats_obj *stats = &adapter->stats;
2251         struct be_dma_mem *cmd = &stats->cmd;
2252
2253         cmd->size = sizeof(struct be_cmd_req_get_stats);
2254         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2255         if (cmd->va == NULL)
2256                 return -1;
2257         memset(cmd->va, 0, cmd->size);
2258         return 0;
2259 }
2260
2261 static void __devexit be_remove(struct pci_dev *pdev)
2262 {
2263         struct be_adapter *adapter = pci_get_drvdata(pdev);
2264
2265         if (!adapter)
2266                 return;
2267
2268         unregister_netdev(adapter->netdev);
2269
2270         be_clear(adapter);
2271
2272         be_stats_cleanup(adapter);
2273
2274         be_ctrl_cleanup(adapter);
2275
2276         be_msix_disable(adapter);
2277
2278         pci_set_drvdata(pdev, NULL);
2279         pci_release_regions(pdev);
2280         pci_disable_device(pdev);
2281
2282         free_netdev(adapter->netdev);
2283 }
2284
2285 static int be_get_config(struct be_adapter *adapter)
2286 {
2287         int status;
2288         u8 mac[ETH_ALEN];
2289
2290         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2291         if (status)
2292                 return status;
2293
2294         status = be_cmd_query_fw_cfg(adapter,
2295                                 &adapter->port_num, &adapter->cap);
2296         if (status)
2297                 return status;
2298
2299         memset(mac, 0, ETH_ALEN);
2300         status = be_cmd_mac_addr_query(adapter, mac,
2301                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2302         if (status)
2303                 return status;
2304
2305         if (!is_valid_ether_addr(mac))
2306                 return -EADDRNOTAVAIL;
2307
2308         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2309         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2310
2311         if (adapter->cap & 0x400)
2312                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2313         else
2314                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2315
2316         return 0;
2317 }
2318
2319 static int __devinit be_probe(struct pci_dev *pdev,
2320                         const struct pci_device_id *pdev_id)
2321 {
2322         int status = 0;
2323         struct be_adapter *adapter;
2324         struct net_device *netdev;
2325
2326         status = pci_enable_device(pdev);
2327         if (status)
2328                 goto do_none;
2329
2330         status = pci_request_regions(pdev, DRV_NAME);
2331         if (status)
2332                 goto disable_dev;
2333         pci_set_master(pdev);
2334
2335         netdev = alloc_etherdev(sizeof(struct be_adapter));
2336         if (netdev == NULL) {
2337                 status = -ENOMEM;
2338                 goto rel_reg;
2339         }
2340         adapter = netdev_priv(netdev);
2341
2342         switch (pdev->device) {
2343         case BE_DEVICE_ID1:
2344         case OC_DEVICE_ID1:
2345                 adapter->generation = BE_GEN2;
2346                 break;
2347         case BE_DEVICE_ID2:
2348         case OC_DEVICE_ID2:
2349                 adapter->generation = BE_GEN3;
2350                 break;
2351         default:
2352                 adapter->generation = 0;
2353         }
2354
2355         adapter->pdev = pdev;
2356         pci_set_drvdata(pdev, adapter);
2357         adapter->netdev = netdev;
2358         be_netdev_init(netdev);
2359         SET_NETDEV_DEV(netdev, &pdev->dev);
2360
2361         be_msix_enable(adapter);
2362
2363         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2364         if (!status) {
2365                 netdev->features |= NETIF_F_HIGHDMA;
2366         } else {
2367                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2368                 if (status) {
2369                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2370                         goto free_netdev;
2371                 }
2372         }
2373
2374         status = be_ctrl_init(adapter);
2375         if (status)
2376                 goto free_netdev;
2377
2378         /* sync up with fw's ready state */
2379         status = be_cmd_POST(adapter);
2380         if (status)
2381                 goto ctrl_clean;
2382
2383         /* tell fw we're ready to fire cmds */
2384         status = be_cmd_fw_init(adapter);
2385         if (status)
2386                 goto ctrl_clean;
2387
2388         status = be_cmd_reset_function(adapter);
2389         if (status)
2390                 goto ctrl_clean;
2391
2392         status = be_stats_init(adapter);
2393         if (status)
2394                 goto ctrl_clean;
2395
2396         status = be_get_config(adapter);
2397         if (status)
2398                 goto stats_clean;
2399
2400         INIT_DELAYED_WORK(&adapter->work, be_worker);
2401
2402         status = be_setup(adapter);
2403         if (status)
2404                 goto stats_clean;
2405
2406         status = register_netdev(netdev);
2407         if (status != 0)
2408                 goto unsetup;
2409
2410         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2411         return 0;
2412
2413 unsetup:
2414         be_clear(adapter);
2415 stats_clean:
2416         be_stats_cleanup(adapter);
2417 ctrl_clean:
2418         be_ctrl_cleanup(adapter);
2419 free_netdev:
2420         be_msix_disable(adapter);
2421         free_netdev(adapter->netdev);
2422         pci_set_drvdata(pdev, NULL);
2423 rel_reg:
2424         pci_release_regions(pdev);
2425 disable_dev:
2426         pci_disable_device(pdev);
2427 do_none:
2428         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2429         return status;
2430 }
2431
2432 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2433 {
2434         struct be_adapter *adapter = pci_get_drvdata(pdev);
2435         struct net_device *netdev =  adapter->netdev;
2436
2437         if (adapter->wol)
2438                 be_setup_wol(adapter, true);
2439
2440         netif_device_detach(netdev);
2441         if (netif_running(netdev)) {
2442                 rtnl_lock();
2443                 be_close(netdev);
2444                 rtnl_unlock();
2445         }
2446         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2447         be_clear(adapter);
2448
2449         pci_save_state(pdev);
2450         pci_disable_device(pdev);
2451         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2452         return 0;
2453 }
2454
2455 static int be_resume(struct pci_dev *pdev)
2456 {
2457         int status = 0;
2458         struct be_adapter *adapter = pci_get_drvdata(pdev);
2459         struct net_device *netdev =  adapter->netdev;
2460
2461         netif_device_detach(netdev);
2462
2463         status = pci_enable_device(pdev);
2464         if (status)
2465                 return status;
2466
2467         pci_set_power_state(pdev, 0);
2468         pci_restore_state(pdev);
2469
2470         /* tell fw we're ready to fire cmds */
2471         status = be_cmd_fw_init(adapter);
2472         if (status)
2473                 return status;
2474
2475         be_setup(adapter);
2476         if (netif_running(netdev)) {
2477                 rtnl_lock();
2478                 be_open(netdev);
2479                 rtnl_unlock();
2480         }
2481         netif_device_attach(netdev);
2482
2483         if (adapter->wol)
2484                 be_setup_wol(adapter, false);
2485         return 0;
2486 }
2487
2488 /*
2489  * An FLR will stop BE from DMAing any data.
2490  */
2491 static void be_shutdown(struct pci_dev *pdev)
2492 {
2493         struct be_adapter *adapter = pci_get_drvdata(pdev);
2494         struct net_device *netdev =  adapter->netdev;
2495
2496         netif_device_detach(netdev);
2497
2498         be_cmd_reset_function(adapter);
2499
2500         if (adapter->wol)
2501                 be_setup_wol(adapter, true);
2502
2503         pci_disable_device(pdev);
2504
2505         return;
2506 }
2507
2508 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2509                                 pci_channel_state_t state)
2510 {
2511         struct be_adapter *adapter = pci_get_drvdata(pdev);
2512         struct net_device *netdev =  adapter->netdev;
2513
2514         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2515
2516         adapter->eeh_err = true;
2517
2518         netif_device_detach(netdev);
2519
2520         if (netif_running(netdev)) {
2521                 rtnl_lock();
2522                 be_close(netdev);
2523                 rtnl_unlock();
2524         }
2525         be_clear(adapter);
2526
2527         if (state == pci_channel_io_perm_failure)
2528                 return PCI_ERS_RESULT_DISCONNECT;
2529
2530         pci_disable_device(pdev);
2531
2532         return PCI_ERS_RESULT_NEED_RESET;
2533 }
2534
2535 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2536 {
2537         struct be_adapter *adapter = pci_get_drvdata(pdev);
2538         int status;
2539
2540         dev_info(&adapter->pdev->dev, "EEH reset\n");
2541         adapter->eeh_err = false;
2542
2543         status = pci_enable_device(pdev);
2544         if (status)
2545                 return PCI_ERS_RESULT_DISCONNECT;
2546
2547         pci_set_master(pdev);
2548         pci_set_power_state(pdev, 0);
2549         pci_restore_state(pdev);
2550
2551         /* Check if card is ok and fw is ready */
2552         status = be_cmd_POST(adapter);
2553         if (status)
2554                 return PCI_ERS_RESULT_DISCONNECT;
2555
2556         return PCI_ERS_RESULT_RECOVERED;
2557 }
2558
2559 static void be_eeh_resume(struct pci_dev *pdev)
2560 {
2561         int status = 0;
2562         struct be_adapter *adapter = pci_get_drvdata(pdev);
2563         struct net_device *netdev =  adapter->netdev;
2564
2565         dev_info(&adapter->pdev->dev, "EEH resume\n");
2566
2567         pci_save_state(pdev);
2568
2569         /* tell fw we're ready to fire cmds */
2570         status = be_cmd_fw_init(adapter);
2571         if (status)
2572                 goto err;
2573
2574         status = be_setup(adapter);
2575         if (status)
2576                 goto err;
2577
2578         if (netif_running(netdev)) {
2579                 status = be_open(netdev);
2580                 if (status)
2581                         goto err;
2582         }
2583         netif_device_attach(netdev);
2584         return;
2585 err:
2586         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2587         return;
2588 }
2589
2590 static struct pci_error_handlers be_eeh_handlers = {
2591         .error_detected = be_eeh_err_detected,
2592         .slot_reset = be_eeh_reset,
2593         .resume = be_eeh_resume,
2594 };
2595
2596 static struct pci_driver be_driver = {
2597         .name = DRV_NAME,
2598         .id_table = be_dev_ids,
2599         .probe = be_probe,
2600         .remove = be_remove,
2601         .suspend = be_suspend,
2602         .resume = be_resume,
2603         .shutdown = be_shutdown,
2604         .err_handler = &be_eeh_handlers
2605 };
2606
2607 static int __init be_init_module(void)
2608 {
2609         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2610             rx_frag_size != 2048) {
2611                 printk(KERN_WARNING DRV_NAME
2612                         " : Module param rx_frag_size must be 2048/4096/8192."
2613                         " Using 2048\n");
2614                 rx_frag_size = 2048;
2615         }
2616
2617         return pci_register_driver(&be_driver);
2618 }
2619 module_init(be_init_module);
2620
2621 static void __exit be_exit_module(void)
2622 {
2623         pci_unregister_driver(&be_driver);
2624 }
2625 module_exit(be_exit_module);