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

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