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 <asm/div64.h>
  20
  21 MODULE_VERSION(DRV_VER);
  22 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  23 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  24 MODULE_AUTHOR("ServerEngines Corporation");
  25 MODULE_LICENSE("GPL");
  26
  27 static unsigned int rx_frag_size = 2048;
  28 module_param(rx_frag_size, uint, S_IRUGO);
  29 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  30
  31 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  32         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  33         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  35         { 0 }
  36 };
  37 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  38
  39 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  40 {
  41         struct be_dma_mem *mem = &q->dma_mem;
  42         if (mem->va)
  43                 pci_free_consistent(adapter->pdev, mem->size,
  44                         mem->va, mem->dma);
  45 }
  46
  47 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  48                 u16 len, u16 entry_size)
  49 {
  50         struct be_dma_mem *mem = &q->dma_mem;
  51
  52         memset(q, 0, sizeof(*q));
  53         q->len = len;
  54         q->entry_size = entry_size;
  55         mem->size = len * entry_size;
  56         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  57         if (!mem->va)
  58                 return -1;
  59         memset(mem->va, 0, mem->size);
  60         return 0;
  61 }
  62
  63 static inline void *queue_head_node(struct be_queue_info *q)
  64 {
  65         return q->dma_mem.va + q->head * q->entry_size;
  66 }
  67
  68 static inline void *queue_tail_node(struct be_queue_info *q)
  69 {
  70         return q->dma_mem.va + q->tail * q->entry_size;
  71 }
  72
  73 static inline void queue_head_inc(struct be_queue_info *q)
  74 {
  75         index_inc(&q->head, q->len);
  76 }
  77
  78 static inline void queue_tail_inc(struct be_queue_info *q)
  79 {
  80         index_inc(&q->tail, q->len);
  81 }
  82
  83 static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
  84 {
  85         u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  86         u32 reg = ioread32(addr);
  87         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  88         if (!enabled && enable) {
  89                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  90         } else if (enabled && !enable) {
  91                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  92         } else {
  93                 printk(KERN_WARNING DRV_NAME
  94                         ": bad value in membar_int_ctrl reg=0x%x\n", reg);
  95                 return;
  96         }
  97         iowrite32(reg, addr);
  98 }
  99
 100 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 101 {
 102         u32 val = 0;
 103         val |= qid & DB_RQ_RING_ID_MASK;
 104         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
 105         iowrite32(val, ctrl->db + DB_RQ_OFFSET);
 106 }
 107
 108 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
 109 {
 110         u32 val = 0;
 111         val |= qid & DB_TXULP_RING_ID_MASK;
 112         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 113         iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
 114 }
 115
 116 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
 117                 bool arm, bool clear_int, u16 num_popped)
 118 {
 119         u32 val = 0;
 120         val |= qid & DB_EQ_RING_ID_MASK;
 121         if (arm)
 122                 val |= 1 << DB_EQ_REARM_SHIFT;
 123         if (clear_int)
 124                 val |= 1 << DB_EQ_CLR_SHIFT;
 125         val |= 1 << DB_EQ_EVNT_SHIFT;
 126         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 127         iowrite32(val, ctrl->db + DB_EQ_OFFSET);
 128 }
 129
 130 static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
 131                 bool arm, u16 num_popped)
 132 {
 133         u32 val = 0;
 134         val |= qid & DB_CQ_RING_ID_MASK;
 135         if (arm)
 136                 val |= 1 << DB_CQ_REARM_SHIFT;
 137         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 138         iowrite32(val, ctrl->db + DB_CQ_OFFSET);
 139 }
 140
 141
 142 static int be_mac_addr_set(struct net_device *netdev, void *p)
 143 {
 144         struct be_adapter *adapter = netdev_priv(netdev);
 145         struct sockaddr *addr = p;
 146         int status = 0;
 147
 148         if (netif_running(netdev)) {
 149                 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
 150                                 adapter->pmac_id);
 151                 if (status)
 152                         return status;
 153
 154                 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
 155                                 adapter->if_handle, &adapter->pmac_id);
 156         }
 157
 158         if (!status)
 159                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 160
 161         return status;
 162 }
 163
 164 static void netdev_stats_update(struct be_adapter *adapter)
 165 {
 166         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 167         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 168         struct be_port_rxf_stats *port_stats =
 169                         &rxf_stats->port[adapter->port_num];
 170         struct net_device_stats *dev_stats = &adapter->stats.net_stats;
 171
 172         dev_stats->rx_packets = port_stats->rx_total_frames;
 173         dev_stats->tx_packets = port_stats->tx_unicastframes +
 174                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 175         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 176                                 (u64) port_stats->rx_bytes_lsd;
 177         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 178                                 (u64) port_stats->tx_bytes_lsd;
 179
 180         /* bad pkts received */
 181         dev_stats->rx_errors = port_stats->rx_crc_errors +
 182                 port_stats->rx_alignment_symbol_errors +
 183                 port_stats->rx_in_range_errors +
 184                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 185
 186         /*  packet transmit problems */
 187         dev_stats->tx_errors = 0;
 188
 189         /*  no space in linux buffers */
 190         dev_stats->rx_dropped = 0;
 191
 192         /* no space available in linux */
 193         dev_stats->tx_dropped = 0;
 194
 195         dev_stats->multicast = port_stats->tx_multicastframes;
 196         dev_stats->collisions = 0;
 197
 198         /* detailed rx errors */
 199         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 200                 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
 201         /* receive ring buffer overflow */
 202         dev_stats->rx_over_errors = 0;
 203         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 204
 205         /* frame alignment errors */
 206         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 207         /* receiver fifo overrun */
 208         /* drops_no_pbuf is no per i/f, it's per BE card */
 209         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 210                                         port_stats->rx_input_fifo_overflow +
 211                                         rxf_stats->rx_drops_no_pbuf;
 212         /* receiver missed packetd */
 213         dev_stats->rx_missed_errors = 0;
 214         /* detailed tx_errors */
 215         dev_stats->tx_aborted_errors = 0;
 216         dev_stats->tx_carrier_errors = 0;
 217         dev_stats->tx_fifo_errors = 0;
 218         dev_stats->tx_heartbeat_errors = 0;
 219         dev_stats->tx_window_errors = 0;
 220 }
 221
 222 static void be_link_status_update(struct be_adapter *adapter)
 223 {
 224         struct be_link_info *prev = &adapter->link;
 225         struct be_link_info now = { 0 };
 226         struct net_device *netdev = adapter->netdev;
 227
 228         be_cmd_link_status_query(&adapter->ctrl, &now);
 229
 230         /* If link came up or went down */
 231         if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
 232                         prev->speed == PHY_LINK_SPEED_ZERO)) {
 233                 if (now.speed == PHY_LINK_SPEED_ZERO) {
 234                         netif_stop_queue(netdev);
 235                         netif_carrier_off(netdev);
 236                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 237                 } else {
 238                         netif_start_queue(netdev);
 239                         netif_carrier_on(netdev);
 240                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 241                 }
 242         }
 243         *prev = now;
 244 }
 245
 246 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 247 static void be_rx_eqd_update(struct be_adapter *adapter)
 248 {
 249         struct be_ctrl_info *ctrl = &adapter->ctrl;
 250         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 251         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 252         ulong now = jiffies;
 253         u32 eqd;
 254
 255         if (!rx_eq->enable_aic)
 256                 return;
 257
 258         /* Wrapped around */
 259         if (time_before(now, stats->rx_fps_jiffies)) {
 260                 stats->rx_fps_jiffies = now;
 261                 return;
 262         }
 263
 264         /* Update once a second */
 265         if ((now - stats->rx_fps_jiffies) < HZ)
 266                 return;
 267
 268         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 269                         ((now - stats->rx_fps_jiffies) / HZ);
 270
 271         stats->rx_fps_jiffies = now;
 272         stats->be_prev_rx_frags = stats->be_rx_frags;
 273         eqd = stats->be_rx_fps / 110000;
 274         eqd = eqd << 3;
 275         if (eqd > rx_eq->max_eqd)
 276                 eqd = rx_eq->max_eqd;
 277         if (eqd < rx_eq->min_eqd)
 278                 eqd = rx_eq->min_eqd;
 279         if (eqd < 10)
 280                 eqd = 0;
 281         if (eqd != rx_eq->cur_eqd)
 282                 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
 283
 284         rx_eq->cur_eqd = eqd;
 285 }
 286
 287 static struct net_device_stats *be_get_stats(struct net_device *dev)
 288 {
 289         struct be_adapter *adapter = netdev_priv(dev);
 290
 291         return &adapter->stats.net_stats;
 292 }
 293
 294 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 295 {
 296         u64 rate = bytes;
 297
 298         do_div(rate, ticks / HZ);
 299         rate <<= 3;                     /* bytes/sec -> bits/sec */
 300         do_div(rate, 1000000ul);        /* MB/Sec */
 301
 302         return rate;
 303 }
 304
 305 static void be_tx_rate_update(struct be_adapter *adapter)
 306 {
 307         struct be_drvr_stats *stats = drvr_stats(adapter);
 308         ulong now = jiffies;
 309
 310         /* Wrapped around? */
 311         if (time_before(now, stats->be_tx_jiffies)) {
 312                 stats->be_tx_jiffies = now;
 313                 return;
 314         }
 315
 316         /* Update tx rate once in two seconds */
 317         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 318                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 319                                                   - stats->be_tx_bytes_prev,
 320                                                  now - stats->be_tx_jiffies);
 321                 stats->be_tx_jiffies = now;
 322                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 323         }
 324 }
 325
 326 static void be_tx_stats_update(struct be_adapter *adapter,
 327                         u32 wrb_cnt, u32 copied, bool stopped)
 328 {
 329         struct be_drvr_stats *stats = drvr_stats(adapter);
 330         stats->be_tx_reqs++;
 331         stats->be_tx_wrbs += wrb_cnt;
 332         stats->be_tx_bytes += copied;
 333         if (stopped)
 334                 stats->be_tx_stops++;
 335 }
 336
 337 /* Determine number of WRB entries needed to xmit data in an skb */
 338 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 339 {
 340         int cnt = (skb->len > skb->data_len);
 341
 342         cnt += skb_shinfo(skb)->nr_frags;
 343
 344         /* to account for hdr wrb */
 345         cnt++;
 346         if (cnt & 1) {
 347                 /* add a dummy to make it an even num */
 348                 cnt++;
 349                 *dummy = true;
 350         } else
 351                 *dummy = false;
 352         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 353         return cnt;
 354 }
 355
 356 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 357 {
 358         wrb->frag_pa_hi = upper_32_bits(addr);
 359         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 360         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 361 }
 362
 363 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 364                 bool vlan, u32 wrb_cnt, u32 len)
 365 {
 366         memset(hdr, 0, sizeof(*hdr));
 367
 368         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 369
 370         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 371                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 372                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 373                         hdr, skb_shinfo(skb)->gso_size);
 374         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 375                 if (is_tcp_pkt(skb))
 376                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 377                 else if (is_udp_pkt(skb))
 378                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 379         }
 380
 381         if (vlan && vlan_tx_tag_present(skb)) {
 382                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 383                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 384                         hdr, vlan_tx_tag_get(skb));
 385         }
 386
 387         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 388         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 389         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 390         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 391 }
 392
 393
 394 static int make_tx_wrbs(struct be_adapter *adapter,
 395                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 396 {
 397         u64 busaddr;
 398         u32 i, copied = 0;
 399         struct pci_dev *pdev = adapter->pdev;
 400         struct sk_buff *first_skb = skb;
 401         struct be_queue_info *txq = &adapter->tx_obj.q;
 402         struct be_eth_wrb *wrb;
 403         struct be_eth_hdr_wrb *hdr;
 404
 405         atomic_add(wrb_cnt, &txq->used);
 406         hdr = queue_head_node(txq);
 407         queue_head_inc(txq);
 408
 409         if (skb->len > skb->data_len) {
 410                 int len = skb->len - skb->data_len;
 411                 busaddr = pci_map_single(pdev, skb->data, len,
 412                                          PCI_DMA_TODEVICE);
 413                 wrb = queue_head_node(txq);
 414                 wrb_fill(wrb, busaddr, len);
 415                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 416                 queue_head_inc(txq);
 417                 copied += len;
 418         }
 419
 420         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 421                 struct skb_frag_struct *frag =
 422                         &skb_shinfo(skb)->frags[i];
 423                 busaddr = pci_map_page(pdev, frag->page,
 424                                        frag->page_offset,
 425                                        frag->size, PCI_DMA_TODEVICE);
 426                 wrb = queue_head_node(txq);
 427                 wrb_fill(wrb, busaddr, frag->size);
 428                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 429                 queue_head_inc(txq);
 430                 copied += frag->size;
 431         }
 432
 433         if (dummy_wrb) {
 434                 wrb = queue_head_node(txq);
 435                 wrb_fill(wrb, 0, 0);
 436                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 437                 queue_head_inc(txq);
 438         }
 439
 440         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 441                 wrb_cnt, copied);
 442         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 443
 444         return copied;
 445 }
 446
 447 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
 448 {
 449         struct be_adapter *adapter = netdev_priv(netdev);
 450         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 451         struct be_queue_info *txq = &tx_obj->q;
 452         u32 wrb_cnt = 0, copied = 0;
 453         u32 start = txq->head;
 454         bool dummy_wrb, stopped = false;
 455
 456         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 457
 458         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 459
 460         /* record the sent skb in the sent_skb table */
 461         BUG_ON(tx_obj->sent_skb_list[start]);
 462         tx_obj->sent_skb_list[start] = skb;
 463
 464         /* Ensure that txq has space for the next skb; Else stop the queue
 465          * *BEFORE* ringing the tx doorbell, so that we serialze the
 466          * tx compls of the current transmit which'll wake up the queue
 467          */
 468         if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
 469                 netif_stop_queue(netdev);
 470                 stopped = true;
 471         }
 472
 473         be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
 474
 475         be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 476         return NETDEV_TX_OK;
 477 }
 478
 479 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 480 {
 481         struct be_adapter *adapter = netdev_priv(netdev);
 482         if (new_mtu < BE_MIN_MTU ||
 483                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 484                 dev_info(&adapter->pdev->dev,
 485                         "MTU must be between %d and %d bytes\n",
 486                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 487                 return -EINVAL;
 488         }
 489         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 490                         netdev->mtu, new_mtu);
 491         netdev->mtu = new_mtu;
 492         return 0;
 493 }
 494
 495 /*
 496  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 497  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 498  * set the BE in promiscuous VLAN mode.
 499  */
 500 static void be_vid_config(struct net_device *netdev)
 501 {
 502         struct be_adapter *adapter = netdev_priv(netdev);
 503         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 504         u16 ntags = 0, i;
 505
 506         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 507                 /* Construct VLAN Table to give to HW */
 508                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 509                         if (adapter->vlan_tag[i]) {
 510                                 vtag[ntags] = cpu_to_le16(i);
 511                                 ntags++;
 512                         }
 513                 }
 514                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 515                         vtag, ntags, 1, 0);
 516         } else {
 517                 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
 518                         NULL, 0, 1, 1);
 519         }
 520 }
 521
 522 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 523 {
 524         struct be_adapter *adapter = netdev_priv(netdev);
 525         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 526         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 527         struct be_ctrl_info *ctrl = &adapter->ctrl;
 528
 529         be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
 530         be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
 531         adapter->vlan_grp = grp;
 532         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
 533         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
 534 }
 535
 536 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 537 {
 538         struct be_adapter *adapter = netdev_priv(netdev);
 539
 540         adapter->num_vlans++;
 541         adapter->vlan_tag[vid] = 1;
 542
 543         be_vid_config(netdev);
 544 }
 545
 546 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 547 {
 548         struct be_adapter *adapter = netdev_priv(netdev);
 549
 550         adapter->num_vlans--;
 551         adapter->vlan_tag[vid] = 0;
 552
 553         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 554         be_vid_config(netdev);
 555 }
 556
 557 static void be_set_multicast_filter(struct net_device *netdev)
 558 {
 559         struct be_adapter *adapter = netdev_priv(netdev);
 560         struct dev_mc_list *mc_ptr;
 561         u8 mac_addr[32][ETH_ALEN];
 562         int i = 0;
 563
 564         if (netdev->flags & IFF_ALLMULTI) {
 565                 /* set BE in Multicast promiscuous */
 566                 be_cmd_mcast_mac_set(&adapter->ctrl,
 567                                         adapter->if_handle, NULL, 0, true);
 568                 return;
 569         }
 570
 571         for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
 572                 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
 573                 if (++i >= 32) {
 574                         be_cmd_mcast_mac_set(&adapter->ctrl,
 575                                 adapter->if_handle, &mac_addr[0][0], i, false);
 576                         i = 0;
 577                 }
 578
 579         }
 580
 581         if (i) {
 582                 /* reset the promiscuous mode also. */
 583                 be_cmd_mcast_mac_set(&adapter->ctrl,
 584                         adapter->if_handle, &mac_addr[0][0], i, false);
 585         }
 586 }
 587
 588 static void be_set_multicast_list(struct net_device *netdev)
 589 {
 590         struct be_adapter *adapter = netdev_priv(netdev);
 591
 592         if (netdev->flags & IFF_PROMISC) {
 593                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
 594         } else {
 595                 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
 596                 be_set_multicast_filter(netdev);
 597         }
 598 }
 599
 600 static void be_rx_rate_update(struct be_adapter *adapter)
 601 {
 602         struct be_drvr_stats *stats = drvr_stats(adapter);
 603         ulong now = jiffies;
 604
 605         /* Wrapped around */
 606         if (time_before(now, stats->be_rx_jiffies)) {
 607                 stats->be_rx_jiffies = now;
 608                 return;
 609         }
 610
 611         /* Update the rate once in two seconds */
 612         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 613                 return;
 614
 615         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 616                                           - stats->be_rx_bytes_prev,
 617                                          now - stats->be_rx_jiffies);
 618         stats->be_rx_jiffies = now;
 619         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 620 }
 621
 622 static void be_rx_stats_update(struct be_adapter *adapter,
 623                 u32 pktsize, u16 numfrags)
 624 {
 625         struct be_drvr_stats *stats = drvr_stats(adapter);
 626
 627         stats->be_rx_compl++;
 628         stats->be_rx_frags += numfrags;
 629         stats->be_rx_bytes += pktsize;
 630 }
 631
 632 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 633 {
 634         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 635
 636         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 637         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 638         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 639         if (ip_version) {
 640                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 641                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 642         }
 643         ipv6_chk = (ip_version && (tcpf || udpf));
 644
 645         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 646 }
 647
 648 static struct be_rx_page_info *
 649 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 650 {
 651         struct be_rx_page_info *rx_page_info;
 652         struct be_queue_info *rxq = &adapter->rx_obj.q;
 653
 654         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 655         BUG_ON(!rx_page_info->page);
 656
 657         if (rx_page_info->last_page_user)
 658                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 659                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 660
 661         atomic_dec(&rxq->used);
 662         return rx_page_info;
 663 }
 664
 665 /* Throwaway the data in the Rx completion */
 666 static void be_rx_compl_discard(struct be_adapter *adapter,
 667                         struct be_eth_rx_compl *rxcp)
 668 {
 669         struct be_queue_info *rxq = &adapter->rx_obj.q;
 670         struct be_rx_page_info *page_info;
 671         u16 rxq_idx, i, num_rcvd;
 672
 673         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 674         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 675
 676         for (i = 0; i < num_rcvd; i++) {
 677                 page_info = get_rx_page_info(adapter, rxq_idx);
 678                 put_page(page_info->page);
 679                 memset(page_info, 0, sizeof(*page_info));
 680                 index_inc(&rxq_idx, rxq->len);
 681         }
 682 }
 683
 684 /*
 685  * skb_fill_rx_data forms a complete skb for an ether frame
 686  * indicated by rxcp.
 687  */
 688 static void skb_fill_rx_data(struct be_adapter *adapter,
 689                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 690 {
 691         struct be_queue_info *rxq = &adapter->rx_obj.q;
 692         struct be_rx_page_info *page_info;
 693         u16 rxq_idx, i, num_rcvd;
 694         u32 pktsize, hdr_len, curr_frag_len;
 695         u8 *start;
 696
 697         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 698         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 699         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 700
 701         page_info = get_rx_page_info(adapter, rxq_idx);
 702
 703         start = page_address(page_info->page) + page_info->page_offset;
 704         prefetch(start);
 705
 706         /* Copy data in the first descriptor of this completion */
 707         curr_frag_len = min(pktsize, rx_frag_size);
 708
 709         /* Copy the header portion into skb_data */
 710         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 711         memcpy(skb->data, start, hdr_len);
 712         skb->len = curr_frag_len;
 713         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 714                 /* Complete packet has now been moved to data */
 715                 put_page(page_info->page);
 716                 skb->data_len = 0;
 717                 skb->tail += curr_frag_len;
 718         } else {
 719                 skb_shinfo(skb)->nr_frags = 1;
 720                 skb_shinfo(skb)->frags[0].page = page_info->page;
 721                 skb_shinfo(skb)->frags[0].page_offset =
 722                                         page_info->page_offset + hdr_len;
 723                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 724                 skb->data_len = curr_frag_len - hdr_len;
 725                 skb->tail += hdr_len;
 726         }
 727         memset(page_info, 0, sizeof(*page_info));
 728
 729         if (pktsize <= rx_frag_size) {
 730                 BUG_ON(num_rcvd != 1);
 731                 return;
 732         }
 733
 734         /* More frags present for this completion */
 735         pktsize -= curr_frag_len; /* account for above copied frag */
 736         for (i = 1; i < num_rcvd; i++) {
 737                 index_inc(&rxq_idx, rxq->len);
 738                 page_info = get_rx_page_info(adapter, rxq_idx);
 739
 740                 curr_frag_len = min(pktsize, rx_frag_size);
 741
 742                 skb_shinfo(skb)->frags[i].page = page_info->page;
 743                 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
 744                 skb_shinfo(skb)->frags[i].size = curr_frag_len;
 745                 skb->len += curr_frag_len;
 746                 skb->data_len += curr_frag_len;
 747                 skb_shinfo(skb)->nr_frags++;
 748                 pktsize -= curr_frag_len;
 749
 750                 memset(page_info, 0, sizeof(*page_info));
 751         }
 752
 753         be_rx_stats_update(adapter, pktsize, num_rcvd);
 754         return;
 755 }
 756
 757 /* Process the RX completion indicated by rxcp when LRO is disabled */
 758 static void be_rx_compl_process(struct be_adapter *adapter,
 759                         struct be_eth_rx_compl *rxcp)
 760 {
 761         struct sk_buff *skb;
 762         u32 vtp, vid;
 763
 764         vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 765
 766         skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
 767         if (!skb) {
 768                 if (net_ratelimit())
 769                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 770                 be_rx_compl_discard(adapter, rxcp);
 771                 return;
 772         }
 773
 774         skb_reserve(skb, NET_IP_ALIGN);
 775
 776         skb_fill_rx_data(adapter, skb, rxcp);
 777
 778         if (do_pkt_csum(rxcp, adapter->rx_csum))
 779                 skb->ip_summed = CHECKSUM_NONE;
 780         else
 781                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 782
 783         skb->truesize = skb->len + sizeof(struct sk_buff);
 784         skb->protocol = eth_type_trans(skb, adapter->netdev);
 785         skb->dev = adapter->netdev;
 786
 787         if (vtp) {
 788                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 789                         kfree_skb(skb);
 790                         return;
 791                 }
 792                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 793                 vid = be16_to_cpu(vid);
 794                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 795         } else {
 796                 netif_receive_skb(skb);
 797         }
 798
 799         adapter->netdev->last_rx = jiffies;
 800
 801         return;
 802 }
 803
 804 /* Process the RX completion indicated by rxcp when LRO is enabled */
 805 static void be_rx_compl_process_lro(struct be_adapter *adapter,
 806                         struct be_eth_rx_compl *rxcp)
 807 {
 808         struct be_rx_page_info *page_info;
 809         struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
 810         struct be_queue_info *rxq = &adapter->rx_obj.q;
 811         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 812         u16 i, rxq_idx = 0, vid;
 813
 814         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 815         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 816         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 817         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 818
 819         remaining = pkt_size;
 820         for (i = 0; i < num_rcvd; i++) {
 821                 page_info = get_rx_page_info(adapter, rxq_idx);
 822
 823                 curr_frag_len = min(remaining, rx_frag_size);
 824
 825                 rx_frags[i].page = page_info->page;
 826                 rx_frags[i].page_offset = page_info->page_offset;
 827                 rx_frags[i].size = curr_frag_len;
 828                 remaining -= curr_frag_len;
 829
 830                 index_inc(&rxq_idx, rxq->len);
 831
 832                 memset(page_info, 0, sizeof(*page_info));
 833         }
 834
 835         if (likely(!vlanf)) {
 836                 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
 837                                 pkt_size, NULL, 0);
 838         } else {
 839                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 840                 vid = be16_to_cpu(vid);
 841
 842                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 843                         return;
 844
 845                 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
 846                         rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
 847                         vid, NULL, 0);
 848         }
 849
 850         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 851         return;
 852 }
 853
 854 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 855 {
 856         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 857
 858         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 859                 return NULL;
 860
 861         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 862
 863         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 864
 865         queue_tail_inc(&adapter->rx_obj.cq);
 866         return rxcp;
 867 }
 868
 869 static inline struct page *be_alloc_pages(u32 size)
 870 {
 871         gfp_t alloc_flags = GFP_ATOMIC;
 872         u32 order = get_order(size);
 873         if (order > 0)
 874                 alloc_flags |= __GFP_COMP;
 875         return  alloc_pages(alloc_flags, order);
 876 }
 877
 878 /*
 879  * Allocate a page, split it to fragments of size rx_frag_size and post as
 880  * receive buffers to BE
 881  */
 882 static void be_post_rx_frags(struct be_adapter *adapter)
 883 {
 884         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 885         struct be_rx_page_info *page_info = NULL;
 886         struct be_queue_info *rxq = &adapter->rx_obj.q;
 887         struct page *pagep = NULL;
 888         struct be_eth_rx_d *rxd;
 889         u64 page_dmaaddr = 0, frag_dmaaddr;
 890         u32 posted, page_offset = 0;
 891
 892         page_info = &page_info_tbl[rxq->head];
 893         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 894                 if (!pagep) {
 895                         pagep = be_alloc_pages(adapter->big_page_size);
 896                         if (unlikely(!pagep)) {
 897                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 898                                 break;
 899                         }
 900                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 901                                                 adapter->big_page_size,
 902                                                 PCI_DMA_FROMDEVICE);
 903                         page_info->page_offset = 0;
 904                 } else {
 905                         get_page(pagep);
 906                         page_info->page_offset = page_offset + rx_frag_size;
 907                 }
 908                 page_offset = page_info->page_offset;
 909                 page_info->page = pagep;
 910                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 911                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 912
 913                 rxd = queue_head_node(rxq);
 914                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 915                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 916                 queue_head_inc(rxq);
 917
 918                 /* Any space left in the current big page for another frag? */
 919                 if ((page_offset + rx_frag_size + rx_frag_size) >
 920                                         adapter->big_page_size) {
 921                         pagep = NULL;
 922                         page_info->last_page_user = true;
 923                 }
 924                 page_info = &page_info_tbl[rxq->head];
 925         }
 926         if (pagep)
 927                 page_info->last_page_user = true;
 928
 929         if (posted) {
 930                 atomic_add(posted, &rxq->used);
 931                 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
 932         } else if (atomic_read(&rxq->used) == 0) {
 933                 /* Let be_worker replenish when memory is available */
 934                 adapter->rx_post_starved = true;
 935         }
 936
 937         return;
 938 }
 939
 940 static struct be_eth_tx_compl *
 941 be_tx_compl_get(struct be_adapter *adapter)
 942 {
 943         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
 944         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 945
 946         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 947                 return NULL;
 948
 949         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 950
 951         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 952
 953         queue_tail_inc(tx_cq);
 954         return txcp;
 955 }
 956
 957 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 958 {
 959         struct be_queue_info *txq = &adapter->tx_obj.q;
 960         struct be_eth_wrb *wrb;
 961         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 962         struct sk_buff *sent_skb;
 963         u64 busaddr;
 964         u16 cur_index, num_wrbs = 0;
 965
 966         cur_index = txq->tail;
 967         sent_skb = sent_skbs[cur_index];
 968         BUG_ON(!sent_skb);
 969         sent_skbs[cur_index] = NULL;
 970
 971         do {
 972                 cur_index = txq->tail;
 973                 wrb = queue_tail_node(txq);
 974                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
 975                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 976                 if (busaddr != 0) {
 977                         pci_unmap_single(adapter->pdev, busaddr,
 978                                 wrb->frag_len, PCI_DMA_TODEVICE);
 979                 }
 980                 num_wrbs++;
 981                 queue_tail_inc(txq);
 982         } while (cur_index != last_index);
 983
 984         atomic_sub(num_wrbs, &txq->used);
 985
 986         kfree_skb(sent_skb);
 987 }
 988
 989 static void be_rx_q_clean(struct be_adapter *adapter)
 990 {
 991         struct be_rx_page_info *page_info;
 992         struct be_queue_info *rxq = &adapter->rx_obj.q;
 993         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
 994         struct be_eth_rx_compl *rxcp;
 995         u16 tail;
 996
 997         /* First cleanup pending rx completions */
 998         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
 999                 be_rx_compl_discard(adapter, rxcp);
1000                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1001         }
1002
1003         /* Then free posted rx buffer that were not used */
1004         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1005         for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1006                 page_info = get_rx_page_info(adapter, tail);
1007                 put_page(page_info->page);
1008                 memset(page_info, 0, sizeof(*page_info));
1009         }
1010         BUG_ON(atomic_read(&rxq->used));
1011 }
1012
1013 static void be_tx_q_clean(struct be_adapter *adapter)
1014 {
1015         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1016         struct sk_buff *sent_skb;
1017         struct be_queue_info *txq = &adapter->tx_obj.q;
1018         u16 last_index;
1019         bool dummy_wrb;
1020
1021         while (atomic_read(&txq->used)) {
1022                 sent_skb = sent_skbs[txq->tail];
1023                 last_index = txq->tail;
1024                 index_adv(&last_index,
1025                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1026                 be_tx_compl_process(adapter, last_index);
1027         }
1028 }
1029
1030 static void be_tx_queues_destroy(struct be_adapter *adapter)
1031 {
1032         struct be_queue_info *q;
1033
1034         q = &adapter->tx_obj.q;
1035         if (q->created)
1036                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1037         be_queue_free(adapter, q);
1038
1039         q = &adapter->tx_obj.cq;
1040         if (q->created)
1041                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1042         be_queue_free(adapter, q);
1043
1044         /* No more tx completions can be rcvd now; clean up if there are
1045          * any pending completions or pending tx requests */
1046         be_tx_q_clean(adapter);
1047
1048         q = &adapter->tx_eq.q;
1049         if (q->created)
1050                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1051         be_queue_free(adapter, q);
1052 }
1053
1054 static int be_tx_queues_create(struct be_adapter *adapter)
1055 {
1056         struct be_queue_info *eq, *q, *cq;
1057
1058         adapter->tx_eq.max_eqd = 0;
1059         adapter->tx_eq.min_eqd = 0;
1060         adapter->tx_eq.cur_eqd = 96;
1061         adapter->tx_eq.enable_aic = false;
1062         /* Alloc Tx Event queue */
1063         eq = &adapter->tx_eq.q;
1064         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1065                 return -1;
1066
1067         /* Ask BE to create Tx Event queue */
1068         if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1069                 goto tx_eq_free;
1070         /* Alloc TX eth compl queue */
1071         cq = &adapter->tx_obj.cq;
1072         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1073                         sizeof(struct be_eth_tx_compl)))
1074                 goto tx_eq_destroy;
1075
1076         /* Ask BE to create Tx eth compl queue */
1077         if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1078                 goto tx_cq_free;
1079
1080         /* Alloc TX eth queue */
1081         q = &adapter->tx_obj.q;
1082         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1083                 goto tx_cq_destroy;
1084
1085         /* Ask BE to create Tx eth queue */
1086         if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1087                 goto tx_q_free;
1088         return 0;
1089
1090 tx_q_free:
1091         be_queue_free(adapter, q);
1092 tx_cq_destroy:
1093         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1094 tx_cq_free:
1095         be_queue_free(adapter, cq);
1096 tx_eq_destroy:
1097         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1098 tx_eq_free:
1099         be_queue_free(adapter, eq);
1100         return -1;
1101 }
1102
1103 static void be_rx_queues_destroy(struct be_adapter *adapter)
1104 {
1105         struct be_queue_info *q;
1106
1107         q = &adapter->rx_obj.q;
1108         if (q->created) {
1109                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1110                 be_rx_q_clean(adapter);
1111         }
1112         be_queue_free(adapter, q);
1113
1114         q = &adapter->rx_obj.cq;
1115         if (q->created)
1116                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1117         be_queue_free(adapter, q);
1118
1119         q = &adapter->rx_eq.q;
1120         if (q->created)
1121                 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1122         be_queue_free(adapter, q);
1123 }
1124
1125 static int be_rx_queues_create(struct be_adapter *adapter)
1126 {
1127         struct be_queue_info *eq, *q, *cq;
1128         int rc;
1129
1130         adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1131         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1132         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1133         adapter->rx_eq.min_eqd = 0;
1134         adapter->rx_eq.cur_eqd = 0;
1135         adapter->rx_eq.enable_aic = true;
1136
1137         /* Alloc Rx Event queue */
1138         eq = &adapter->rx_eq.q;
1139         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1140                                 sizeof(struct be_eq_entry));
1141         if (rc)
1142                 return rc;
1143
1144         /* Ask BE to create Rx Event queue */
1145         rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1146         if (rc)
1147                 goto rx_eq_free;
1148
1149         /* Alloc RX eth compl queue */
1150         cq = &adapter->rx_obj.cq;
1151         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1152                         sizeof(struct be_eth_rx_compl));
1153         if (rc)
1154                 goto rx_eq_destroy;
1155
1156         /* Ask BE to create Rx eth compl queue */
1157         rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1158         if (rc)
1159                 goto rx_cq_free;
1160
1161         /* Alloc RX eth queue */
1162         q = &adapter->rx_obj.q;
1163         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1164         if (rc)
1165                 goto rx_cq_destroy;
1166
1167         /* Ask BE to create Rx eth queue */
1168         rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1169                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1170         if (rc)
1171                 goto rx_q_free;
1172
1173         return 0;
1174 rx_q_free:
1175         be_queue_free(adapter, q);
1176 rx_cq_destroy:
1177         be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1178 rx_cq_free:
1179         be_queue_free(adapter, cq);
1180 rx_eq_destroy:
1181         be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1182 rx_eq_free:
1183         be_queue_free(adapter, eq);
1184         return rc;
1185 }
1186 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1187 {
1188         struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1189         u32 evt = entry->evt;
1190
1191         if (!evt)
1192                 return false;
1193
1194         evt = le32_to_cpu(evt);
1195         *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1196         entry->evt = 0;
1197         queue_tail_inc(&eq_obj->q);
1198         return true;
1199 }
1200
1201 static int event_handle(struct be_ctrl_info *ctrl,
1202                         struct be_eq_obj *eq_obj)
1203 {
1204         u16 rid = 0, num = 0;
1205
1206         while (event_get(eq_obj, &rid))
1207                 num++;
1208
1209         /* We can see an interrupt and no event */
1210         be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1211         if (num)
1212                 napi_schedule(&eq_obj->napi);
1213
1214         return num;
1215 }
1216
1217 static irqreturn_t be_intx(int irq, void *dev)
1218 {
1219         struct be_adapter *adapter = dev;
1220         struct be_ctrl_info *ctrl = &adapter->ctrl;
1221         int rx, tx;
1222
1223         tx = event_handle(ctrl, &adapter->tx_eq);
1224         rx = event_handle(ctrl, &adapter->rx_eq);
1225
1226         if (rx || tx)
1227                 return IRQ_HANDLED;
1228         else
1229                 return IRQ_NONE;
1230 }
1231
1232 static irqreturn_t be_msix_rx(int irq, void *dev)
1233 {
1234         struct be_adapter *adapter = dev;
1235
1236         event_handle(&adapter->ctrl, &adapter->rx_eq);
1237
1238         return IRQ_HANDLED;
1239 }
1240
1241 static irqreturn_t be_msix_tx(int irq, void *dev)
1242 {
1243         struct be_adapter *adapter = dev;
1244
1245         event_handle(&adapter->ctrl, &adapter->tx_eq);
1246
1247         return IRQ_HANDLED;
1248 }
1249
1250 static inline bool do_lro(struct be_adapter *adapter,
1251                         struct be_eth_rx_compl *rxcp)
1252 {
1253         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1254         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1255
1256         if (err)
1257                 drvr_stats(adapter)->be_rxcp_err++;
1258
1259         return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1260                 false : true;
1261 }
1262
1263 int be_poll_rx(struct napi_struct *napi, int budget)
1264 {
1265         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1266         struct be_adapter *adapter =
1267                 container_of(rx_eq, struct be_adapter, rx_eq);
1268         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1269         struct be_eth_rx_compl *rxcp;
1270         u32 work_done;
1271
1272         for (work_done = 0; work_done < budget; work_done++) {
1273                 rxcp = be_rx_compl_get(adapter);
1274                 if (!rxcp)
1275                         break;
1276
1277                 if (do_lro(adapter, rxcp))
1278                         be_rx_compl_process_lro(adapter, rxcp);
1279                 else
1280                         be_rx_compl_process(adapter, rxcp);
1281         }
1282
1283         lro_flush_all(&adapter->rx_obj.lro_mgr);
1284
1285         /* Refill the queue */
1286         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1287                 be_post_rx_frags(adapter);
1288
1289         /* All consumed */
1290         if (work_done < budget) {
1291                 napi_complete(napi);
1292                 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1293         } else {
1294                 /* More to be consumed; continue with interrupts disabled */
1295                 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1296         }
1297         return work_done;
1298 }
1299
1300 /* For TX we don't honour budget; consume everything */
1301 int be_poll_tx(struct napi_struct *napi, int budget)
1302 {
1303         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1304         struct be_adapter *adapter =
1305                 container_of(tx_eq, struct be_adapter, tx_eq);
1306         struct be_tx_obj *tx_obj = &adapter->tx_obj;
1307         struct be_queue_info *tx_cq = &tx_obj->cq;
1308         struct be_queue_info *txq = &tx_obj->q;
1309         struct be_eth_tx_compl *txcp;
1310         u32 num_cmpl = 0;
1311         u16 end_idx;
1312
1313         while ((txcp = be_tx_compl_get(adapter))) {
1314                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1315                                         wrb_index, txcp);
1316                 be_tx_compl_process(adapter, end_idx);
1317                 num_cmpl++;
1318         }
1319
1320         /* As Tx wrbs have been freed up, wake up netdev queue if
1321          * it was stopped due to lack of tx wrbs.
1322          */
1323         if (netif_queue_stopped(adapter->netdev) &&
1324                         atomic_read(&txq->used) < txq->len / 2) {
1325                 netif_wake_queue(adapter->netdev);
1326         }
1327
1328         napi_complete(napi);
1329
1330         be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1331
1332         drvr_stats(adapter)->be_tx_events++;
1333         drvr_stats(adapter)->be_tx_compl += num_cmpl;
1334
1335         return 1;
1336 }
1337
1338 static void be_worker(struct work_struct *work)
1339 {
1340         struct be_adapter *adapter =
1341                 container_of(work, struct be_adapter, work.work);
1342         int status;
1343
1344         /* Check link */
1345         be_link_status_update(adapter);
1346
1347         /* Get Stats */
1348         status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1349         if (!status)
1350                 netdev_stats_update(adapter);
1351
1352         /* Set EQ delay */
1353         be_rx_eqd_update(adapter);
1354
1355         be_tx_rate_update(adapter);
1356         be_rx_rate_update(adapter);
1357
1358         if (adapter->rx_post_starved) {
1359                 adapter->rx_post_starved = false;
1360                 be_post_rx_frags(adapter);
1361         }
1362
1363         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1364 }
1365
1366 static void be_msix_enable(struct be_adapter *adapter)
1367 {
1368         int i, status;
1369
1370         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1371                 adapter->msix_entries[i].entry = i;
1372
1373         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1374                 BE_NUM_MSIX_VECTORS);
1375         if (status == 0)
1376                 adapter->msix_enabled = true;
1377         return;
1378 }
1379
1380 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1381 {
1382         return adapter->msix_entries[eq_id -
1383                         8 * adapter->ctrl.pci_func].vector;
1384 }
1385
1386 static int be_msix_register(struct be_adapter *adapter)
1387 {
1388         struct net_device *netdev = adapter->netdev;
1389         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1390         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1391         int status, vec;
1392
1393         sprintf(tx_eq->desc, "%s-tx", netdev->name);
1394         vec = be_msix_vec_get(adapter, tx_eq->q.id);
1395         status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1396         if (status)
1397                 goto err;
1398
1399         sprintf(rx_eq->desc, "%s-rx", netdev->name);
1400         vec = be_msix_vec_get(adapter, rx_eq->q.id);
1401         status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1402         if (status) { /* Free TX IRQ */
1403                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1404                 free_irq(vec, adapter);
1405                 goto err;
1406         }
1407         return 0;
1408 err:
1409         dev_warn(&adapter->pdev->dev,
1410                 "MSIX Request IRQ failed - err %d\n", status);
1411         pci_disable_msix(adapter->pdev);
1412         adapter->msix_enabled = false;
1413         return status;
1414 }
1415
1416 static int be_irq_register(struct be_adapter *adapter)
1417 {
1418         struct net_device *netdev = adapter->netdev;
1419         int status;
1420
1421         if (adapter->msix_enabled) {
1422                 status = be_msix_register(adapter);
1423                 if (status == 0)
1424                         goto done;
1425         }
1426
1427         /* INTx */
1428         netdev->irq = adapter->pdev->irq;
1429         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1430                         adapter);
1431         if (status) {
1432                 dev_err(&adapter->pdev->dev,
1433                         "INTx request IRQ failed - err %d\n", status);
1434                 return status;
1435         }
1436 done:
1437         adapter->isr_registered = true;
1438         return 0;
1439 }
1440
1441 static void be_irq_unregister(struct be_adapter *adapter)
1442 {
1443         struct net_device *netdev = adapter->netdev;
1444         int vec;
1445
1446         if (!adapter->isr_registered)
1447                 return;
1448
1449         /* INTx */
1450         if (!adapter->msix_enabled) {
1451                 free_irq(netdev->irq, adapter);
1452                 goto done;
1453         }
1454
1455         /* MSIx */
1456         vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1457         free_irq(vec, adapter);
1458         vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1459         free_irq(vec, adapter);
1460 done:
1461         adapter->isr_registered = false;
1462         return;
1463 }
1464
1465 static int be_open(struct net_device *netdev)
1466 {
1467         struct be_adapter *adapter = netdev_priv(netdev);
1468         struct be_ctrl_info *ctrl = &adapter->ctrl;
1469         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1470         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1471         u32 if_flags;
1472         int status;
1473
1474         if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1475                 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1476                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1477         status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1478                         false/* pmac_invalid */, &adapter->if_handle,
1479                         &adapter->pmac_id);
1480         if (status != 0)
1481                 goto do_none;
1482
1483         be_vid_config(netdev);
1484
1485         status = be_cmd_set_flow_control(ctrl, true, true);
1486         if (status != 0)
1487                 goto if_destroy;
1488
1489         status = be_tx_queues_create(adapter);
1490         if (status != 0)
1491                 goto if_destroy;
1492
1493         status = be_rx_queues_create(adapter);
1494         if (status != 0)
1495                 goto tx_qs_destroy;
1496
1497         /* First time posting */
1498         be_post_rx_frags(adapter);
1499
1500         napi_enable(&rx_eq->napi);
1501         napi_enable(&tx_eq->napi);
1502
1503         be_irq_register(adapter);
1504
1505         be_intr_set(ctrl, true);
1506
1507         /* The evt queues are created in the unarmed state; arm them */
1508         be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1509         be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1510
1511         /* The compl queues are created in the unarmed state; arm them */
1512         be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1513         be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1514
1515         be_link_status_update(adapter);
1516
1517         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1518         return 0;
1519
1520 tx_qs_destroy:
1521         be_tx_queues_destroy(adapter);
1522 if_destroy:
1523         be_cmd_if_destroy(ctrl, adapter->if_handle);
1524 do_none:
1525         return status;
1526 }
1527
1528 static int be_close(struct net_device *netdev)
1529 {
1530         struct be_adapter *adapter = netdev_priv(netdev);
1531         struct be_ctrl_info *ctrl = &adapter->ctrl;
1532         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1533         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1534         int vec;
1535
1536         cancel_delayed_work(&adapter->work);
1537
1538         netif_stop_queue(netdev);
1539         netif_carrier_off(netdev);
1540         adapter->link.speed = PHY_LINK_SPEED_ZERO;
1541
1542         be_intr_set(ctrl, false);
1543
1544         if (adapter->msix_enabled) {
1545                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1546                 synchronize_irq(vec);
1547                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1548                 synchronize_irq(vec);
1549         } else {
1550                 synchronize_irq(netdev->irq);
1551         }
1552         be_irq_unregister(adapter);
1553
1554         napi_disable(&rx_eq->napi);
1555         napi_disable(&tx_eq->napi);
1556
1557         be_rx_queues_destroy(adapter);
1558         be_tx_queues_destroy(adapter);
1559
1560         be_cmd_if_destroy(ctrl, adapter->if_handle);
1561         return 0;
1562 }
1563
1564 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1565                                 void **ip_hdr, void **tcpudp_hdr,
1566                                 u64 *hdr_flags, void *priv)
1567 {
1568         struct ethhdr *eh;
1569         struct vlan_ethhdr *veh;
1570         struct iphdr *iph;
1571         u8 *va = page_address(frag->page) + frag->page_offset;
1572         unsigned long ll_hlen;
1573
1574         prefetch(va);
1575         eh = (struct ethhdr *)va;
1576         *mac_hdr = eh;
1577         ll_hlen = ETH_HLEN;
1578         if (eh->h_proto != htons(ETH_P_IP)) {
1579                 if (eh->h_proto == htons(ETH_P_8021Q)) {
1580                         veh = (struct vlan_ethhdr *)va;
1581                         if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1582                                 return -1;
1583
1584                         ll_hlen += VLAN_HLEN;
1585                 } else {
1586                         return -1;
1587                 }
1588         }
1589         *hdr_flags = LRO_IPV4;
1590         iph = (struct iphdr *)(va + ll_hlen);
1591         *ip_hdr = iph;
1592         if (iph->protocol != IPPROTO_TCP)
1593                 return -1;
1594         *hdr_flags |= LRO_TCP;
1595         *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1596
1597         return 0;
1598 }
1599
1600 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1601 {
1602         struct net_lro_mgr *lro_mgr;
1603
1604         lro_mgr = &adapter->rx_obj.lro_mgr;
1605         lro_mgr->dev = netdev;
1606         lro_mgr->features = LRO_F_NAPI;
1607         lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1608         lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1609         lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1610         lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1611         lro_mgr->get_frag_header = be_get_frag_header;
1612         lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1613 }
1614
1615 static struct net_device_ops be_netdev_ops = {
1616         .ndo_open               = be_open,
1617         .ndo_stop               = be_close,
1618         .ndo_start_xmit         = be_xmit,
1619         .ndo_get_stats          = be_get_stats,
1620         .ndo_set_rx_mode        = be_set_multicast_list,
1621         .ndo_set_mac_address    = be_mac_addr_set,
1622         .ndo_change_mtu         = be_change_mtu,
1623         .ndo_validate_addr      = eth_validate_addr,
1624         .ndo_vlan_rx_register   = be_vlan_register,
1625         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
1626         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
1627 };
1628
1629 static void be_netdev_init(struct net_device *netdev)
1630 {
1631         struct be_adapter *adapter = netdev_priv(netdev);
1632
1633         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1634                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1635                 NETIF_F_IPV6_CSUM;
1636
1637         netdev->flags |= IFF_MULTICAST;
1638
1639         adapter->rx_csum = true;
1640
1641         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1642
1643         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1644
1645         be_lro_init(adapter, netdev);
1646
1647         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1648                 BE_NAPI_WEIGHT);
1649         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1650                 BE_NAPI_WEIGHT);
1651
1652         netif_carrier_off(netdev);
1653         netif_stop_queue(netdev);
1654 }
1655
1656 static void be_unmap_pci_bars(struct be_adapter *adapter)
1657 {
1658         struct be_ctrl_info *ctrl = &adapter->ctrl;
1659         if (ctrl->csr)
1660                 iounmap(ctrl->csr);
1661         if (ctrl->db)
1662                 iounmap(ctrl->db);
1663         if (ctrl->pcicfg)
1664                 iounmap(ctrl->pcicfg);
1665 }
1666
1667 static int be_map_pci_bars(struct be_adapter *adapter)
1668 {
1669         u8 __iomem *addr;
1670
1671         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1672                         pci_resource_len(adapter->pdev, 2));
1673         if (addr == NULL)
1674                 return -ENOMEM;
1675         adapter->ctrl.csr = addr;
1676
1677         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1678                         128 * 1024);
1679         if (addr == NULL)
1680                 goto pci_map_err;
1681         adapter->ctrl.db = addr;
1682
1683         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1684                         pci_resource_len(adapter->pdev, 1));
1685         if (addr == NULL)
1686                 goto pci_map_err;
1687         adapter->ctrl.pcicfg = addr;
1688
1689         return 0;
1690 pci_map_err:
1691         be_unmap_pci_bars(adapter);
1692         return -ENOMEM;
1693 }
1694
1695
1696 static void be_ctrl_cleanup(struct be_adapter *adapter)
1697 {
1698         struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1699
1700         be_unmap_pci_bars(adapter);
1701
1702         if (mem->va)
1703                 pci_free_consistent(adapter->pdev, mem->size,
1704                         mem->va, mem->dma);
1705 }
1706
1707 /* Initialize the mbox required to send cmds to BE */
1708 static int be_ctrl_init(struct be_adapter *adapter)
1709 {
1710         struct be_ctrl_info *ctrl = &adapter->ctrl;
1711         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1712         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1713         int status;
1714         u32 val;
1715
1716         status = be_map_pci_bars(adapter);
1717         if (status)
1718                 return status;
1719
1720         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1721         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1722                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1723         if (!mbox_mem_alloc->va) {
1724                 be_unmap_pci_bars(adapter);
1725                 return -1;
1726         }
1727         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1728         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1729         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1730         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1731         spin_lock_init(&ctrl->cmd_lock);
1732
1733         val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1734         ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1735                                         MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1736         return 0;
1737 }
1738
1739 static void be_stats_cleanup(struct be_adapter *adapter)
1740 {
1741         struct be_stats_obj *stats = &adapter->stats;
1742         struct be_dma_mem *cmd = &stats->cmd;
1743
1744         if (cmd->va)
1745                 pci_free_consistent(adapter->pdev, cmd->size,
1746                         cmd->va, cmd->dma);
1747 }
1748
1749 static int be_stats_init(struct be_adapter *adapter)
1750 {
1751         struct be_stats_obj *stats = &adapter->stats;
1752         struct be_dma_mem *cmd = &stats->cmd;
1753
1754         cmd->size = sizeof(struct be_cmd_req_get_stats);
1755         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1756         if (cmd->va == NULL)
1757                 return -1;
1758         return 0;
1759 }
1760
1761 static void __devexit be_remove(struct pci_dev *pdev)
1762 {
1763         struct be_adapter *adapter = pci_get_drvdata(pdev);
1764         if (!adapter)
1765                 return;
1766
1767         unregister_netdev(adapter->netdev);
1768
1769         be_stats_cleanup(adapter);
1770
1771         be_ctrl_cleanup(adapter);
1772
1773         if (adapter->msix_enabled) {
1774                 pci_disable_msix(adapter->pdev);
1775                 adapter->msix_enabled = false;
1776         }
1777
1778         pci_set_drvdata(pdev, NULL);
1779         pci_release_regions(pdev);
1780         pci_disable_device(pdev);
1781
1782         free_netdev(adapter->netdev);
1783 }
1784
1785 static int be_hw_up(struct be_adapter *adapter)
1786 {
1787         struct be_ctrl_info *ctrl = &adapter->ctrl;
1788         int status;
1789
1790         status = be_cmd_POST(ctrl);
1791         if (status)
1792                 return status;
1793
1794         status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1795         if (status)
1796                 return status;
1797
1798         status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1799         return status;
1800 }
1801
1802 static int __devinit be_probe(struct pci_dev *pdev,
1803                         const struct pci_device_id *pdev_id)
1804 {
1805         int status = 0;
1806         struct be_adapter *adapter;
1807         struct net_device *netdev;
1808         struct be_ctrl_info *ctrl;
1809         u8 mac[ETH_ALEN];
1810
1811         status = pci_enable_device(pdev);
1812         if (status)
1813                 goto do_none;
1814
1815         status = pci_request_regions(pdev, DRV_NAME);
1816         if (status)
1817                 goto disable_dev;
1818         pci_set_master(pdev);
1819
1820         netdev = alloc_etherdev(sizeof(struct be_adapter));
1821         if (netdev == NULL) {
1822                 status = -ENOMEM;
1823                 goto rel_reg;
1824         }
1825         adapter = netdev_priv(netdev);
1826         adapter->pdev = pdev;
1827         pci_set_drvdata(pdev, adapter);
1828         adapter->netdev = netdev;
1829
1830         be_msix_enable(adapter);
1831
1832         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1833         if (!status) {
1834                 netdev->features |= NETIF_F_HIGHDMA;
1835         } else {
1836                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1837                 if (status) {
1838                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1839                         goto free_netdev;
1840                 }
1841         }
1842
1843         ctrl = &adapter->ctrl;
1844         status = be_ctrl_init(adapter);
1845         if (status)
1846                 goto free_netdev;
1847
1848         status = be_stats_init(adapter);
1849         if (status)
1850                 goto ctrl_clean;
1851
1852         status = be_hw_up(adapter);
1853         if (status)
1854                 goto stats_clean;
1855
1856         status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1857                         true /* permanent */, 0);
1858         if (status)
1859                 goto stats_clean;
1860         memcpy(netdev->dev_addr, mac, ETH_ALEN);
1861
1862         INIT_DELAYED_WORK(&adapter->work, be_worker);
1863         be_netdev_init(netdev);
1864         SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1865
1866         status = register_netdev(netdev);
1867         if (status != 0)
1868                 goto stats_clean;
1869
1870         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1871         return 0;
1872
1873 stats_clean:
1874         be_stats_cleanup(adapter);
1875 ctrl_clean:
1876         be_ctrl_cleanup(adapter);
1877 free_netdev:
1878         free_netdev(adapter->netdev);
1879 rel_reg:
1880         pci_release_regions(pdev);
1881 disable_dev:
1882         pci_disable_device(pdev);
1883 do_none:
1884         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1885         return status;
1886 }
1887
1888 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1889 {
1890         struct be_adapter *adapter = pci_get_drvdata(pdev);
1891         struct net_device *netdev =  adapter->netdev;
1892
1893         netif_device_detach(netdev);
1894         if (netif_running(netdev)) {
1895                 rtnl_lock();
1896                 be_close(netdev);
1897                 rtnl_unlock();
1898         }
1899
1900         pci_save_state(pdev);
1901         pci_disable_device(pdev);
1902         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1903         return 0;
1904 }
1905
1906 static int be_resume(struct pci_dev *pdev)
1907 {
1908         int status = 0;
1909         struct be_adapter *adapter = pci_get_drvdata(pdev);
1910         struct net_device *netdev =  adapter->netdev;
1911
1912         netif_device_detach(netdev);
1913
1914         status = pci_enable_device(pdev);
1915         if (status)
1916                 return status;
1917
1918         pci_set_power_state(pdev, 0);
1919         pci_restore_state(pdev);
1920
1921         if (netif_running(netdev)) {
1922                 rtnl_lock();
1923                 be_open(netdev);
1924                 rtnl_unlock();
1925         }
1926         netif_device_attach(netdev);
1927         return 0;
1928 }
1929
1930 static struct pci_driver be_driver = {
1931         .name = DRV_NAME,
1932         .id_table = be_dev_ids,
1933         .probe = be_probe,
1934         .remove = be_remove,
1935         .suspend = be_suspend,
1936         .resume = be_resume
1937 };
1938
1939 static int __init be_init_module(void)
1940 {
1941         if (rx_frag_size != 8192 && rx_frag_size != 4096
1942                 && rx_frag_size != 2048) {
1943                 printk(KERN_WARNING DRV_NAME
1944                         " : Module param rx_frag_size must be 2048/4096/8192."
1945                         " Using 2048\n");
1946                 rx_frag_size = 2048;
1947         }
1948         /* Ensure rx_frag_size is aligned to chache line */
1949         if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1950                 printk(KERN_WARNING DRV_NAME
1951                         " : Bad module param rx_frag_size. Using 2048\n");
1952                 rx_frag_size = 2048;
1953         }
1954
1955         return pci_register_driver(&be_driver);
1956 }
1957 module_init(be_init_module);
1958
1959 static void __exit be_exit_module(void)
1960 {
1961         pci_unregister_driver(&be_driver);
1962 }
1963 module_exit(be_exit_module);