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

   1 /*
   2  * Copyright (C) 2005 - 2009 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 module_param(rx_frag_size, uint, S_IRUGO);
  30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  31
  32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  33         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  34         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
  35         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  36         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  37         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
  38         { 0 }
  39 };
  40 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  41
  42 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  43 {
  44         struct be_dma_mem *mem = &q->dma_mem;
  45         if (mem->va)
  46                 pci_free_consistent(adapter->pdev, mem->size,
  47                         mem->va, mem->dma);
  48 }
  49
  50 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  51                 u16 len, u16 entry_size)
  52 {
  53         struct be_dma_mem *mem = &q->dma_mem;
  54
  55         memset(q, 0, sizeof(*q));
  56         q->len = len;
  57         q->entry_size = entry_size;
  58         mem->size = len * entry_size;
  59         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  60         if (!mem->va)
  61                 return -1;
  62         memset(mem->va, 0, mem->size);
  63         return 0;
  64 }
  65
  66 static void be_intr_set(struct be_adapter *adapter, bool enable)
  67 {
  68         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  69         u32 reg = ioread32(addr);
  70         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  71
  72         if (!enabled && enable)
  73                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  74         else if (enabled && !enable)
  75                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  76         else
  77                 return;
  78
  79         iowrite32(reg, addr);
  80 }
  81
  82 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  83 {
  84         u32 val = 0;
  85         val |= qid & DB_RQ_RING_ID_MASK;
  86         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  87         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  88 }
  89
  90 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  91 {
  92         u32 val = 0;
  93         val |= qid & DB_TXULP_RING_ID_MASK;
  94         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
  95         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
  96 }
  97
  98 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
  99                 bool arm, bool clear_int, u16 num_popped)
 100 {
 101         u32 val = 0;
 102         val |= qid & DB_EQ_RING_ID_MASK;
 103         if (arm)
 104                 val |= 1 << DB_EQ_REARM_SHIFT;
 105         if (clear_int)
 106                 val |= 1 << DB_EQ_CLR_SHIFT;
 107         val |= 1 << DB_EQ_EVNT_SHIFT;
 108         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 109         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 110 }
 111
 112 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 113 {
 114         u32 val = 0;
 115         val |= qid & DB_CQ_RING_ID_MASK;
 116         if (arm)
 117                 val |= 1 << DB_CQ_REARM_SHIFT;
 118         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 119         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 120 }
 121
 122 static int be_mac_addr_set(struct net_device *netdev, void *p)
 123 {
 124         struct be_adapter *adapter = netdev_priv(netdev);
 125         struct sockaddr *addr = p;
 126         int status = 0;
 127
 128         if (!is_valid_ether_addr(addr->sa_data))
 129                 return -EADDRNOTAVAIL;
 130
 131         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 132         if (status)
 133                 return status;
 134
 135         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 136                         adapter->if_handle, &adapter->pmac_id);
 137         if (!status)
 138                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 139
 140         return status;
 141 }
 142
 143 void netdev_stats_update(struct be_adapter *adapter)
 144 {
 145         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 146         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 147         struct be_port_rxf_stats *port_stats =
 148                         &rxf_stats->port[adapter->port_num];
 149         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 150         struct be_erx_stats *erx_stats = &hw_stats->erx;
 151
 152         dev_stats->rx_packets = port_stats->rx_total_frames;
 153         dev_stats->tx_packets = port_stats->tx_unicastframes +
 154                 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
 155         dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
 156                                 (u64) port_stats->rx_bytes_lsd;
 157         dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
 158                                 (u64) port_stats->tx_bytes_lsd;
 159
 160         /* bad pkts received */
 161         dev_stats->rx_errors = port_stats->rx_crc_errors +
 162                 port_stats->rx_alignment_symbol_errors +
 163                 port_stats->rx_in_range_errors +
 164                 port_stats->rx_out_range_errors +
 165                 port_stats->rx_frame_too_long +
 166                 port_stats->rx_dropped_too_small +
 167                 port_stats->rx_dropped_too_short +
 168                 port_stats->rx_dropped_header_too_small +
 169                 port_stats->rx_dropped_tcp_length +
 170                 port_stats->rx_dropped_runt +
 171                 port_stats->rx_tcp_checksum_errs +
 172                 port_stats->rx_ip_checksum_errs +
 173                 port_stats->rx_udp_checksum_errs;
 174
 175         /*  no space in linux buffers: best possible approximation */
 176         dev_stats->rx_dropped =
 177                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 178
 179         /* detailed rx errors */
 180         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 181                 port_stats->rx_out_range_errors +
 182                 port_stats->rx_frame_too_long;
 183
 184         /* receive ring buffer overflow */
 185         dev_stats->rx_over_errors = 0;
 186
 187         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 188
 189         /* frame alignment errors */
 190         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 191
 192         /* receiver fifo overrun */
 193         /* drops_no_pbuf is no per i/f, it's per BE card */
 194         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 195                                         port_stats->rx_input_fifo_overflow +
 196                                         rxf_stats->rx_drops_no_pbuf;
 197         /* receiver missed packetd */
 198         dev_stats->rx_missed_errors = 0;
 199
 200         /*  packet transmit problems */
 201         dev_stats->tx_errors = 0;
 202
 203         /* no space available in linux */
 204         dev_stats->tx_dropped = 0;
 205
 206         dev_stats->multicast = port_stats->rx_multicast_frames;
 207         dev_stats->collisions = 0;
 208
 209         /* detailed tx_errors */
 210         dev_stats->tx_aborted_errors = 0;
 211         dev_stats->tx_carrier_errors = 0;
 212         dev_stats->tx_fifo_errors = 0;
 213         dev_stats->tx_heartbeat_errors = 0;
 214         dev_stats->tx_window_errors = 0;
 215 }
 216
 217 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 218 {
 219         struct net_device *netdev = adapter->netdev;
 220
 221         /* If link came up or went down */
 222         if (adapter->link_up != link_up) {
 223                 adapter->link_speed = -1;
 224                 if (link_up) {
 225                         netif_start_queue(netdev);
 226                         netif_carrier_on(netdev);
 227                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 228                 } else {
 229                         netif_stop_queue(netdev);
 230                         netif_carrier_off(netdev);
 231                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 232                 }
 233                 adapter->link_up = link_up;
 234         }
 235 }
 236
 237 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 238 static void be_rx_eqd_update(struct be_adapter *adapter)
 239 {
 240         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 241         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 242         ulong now = jiffies;
 243         u32 eqd;
 244
 245         if (!rx_eq->enable_aic)
 246                 return;
 247
 248         /* Wrapped around */
 249         if (time_before(now, stats->rx_fps_jiffies)) {
 250                 stats->rx_fps_jiffies = now;
 251                 return;
 252         }
 253
 254         /* Update once a second */
 255         if ((now - stats->rx_fps_jiffies) < HZ)
 256                 return;
 257
 258         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 259                         ((now - stats->rx_fps_jiffies) / HZ);
 260
 261         stats->rx_fps_jiffies = now;
 262         stats->be_prev_rx_frags = stats->be_rx_frags;
 263         eqd = stats->be_rx_fps / 110000;
 264         eqd = eqd << 3;
 265         if (eqd > rx_eq->max_eqd)
 266                 eqd = rx_eq->max_eqd;
 267         if (eqd < rx_eq->min_eqd)
 268                 eqd = rx_eq->min_eqd;
 269         if (eqd < 10)
 270                 eqd = 0;
 271         if (eqd != rx_eq->cur_eqd)
 272                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 273
 274         rx_eq->cur_eqd = eqd;
 275 }
 276
 277 static struct net_device_stats *be_get_stats(struct net_device *dev)
 278 {
 279         return &dev->stats;
 280 }
 281
 282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 283 {
 284         u64 rate = bytes;
 285
 286         do_div(rate, ticks / HZ);
 287         rate <<= 3;                     /* bytes/sec -> bits/sec */
 288         do_div(rate, 1000000ul);        /* MB/Sec */
 289
 290         return rate;
 291 }
 292
 293 static void be_tx_rate_update(struct be_adapter *adapter)
 294 {
 295         struct be_drvr_stats *stats = drvr_stats(adapter);
 296         ulong now = jiffies;
 297
 298         /* Wrapped around? */
 299         if (time_before(now, stats->be_tx_jiffies)) {
 300                 stats->be_tx_jiffies = now;
 301                 return;
 302         }
 303
 304         /* Update tx rate once in two seconds */
 305         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 306                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 307                                                   - stats->be_tx_bytes_prev,
 308                                                  now - stats->be_tx_jiffies);
 309                 stats->be_tx_jiffies = now;
 310                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 311         }
 312 }
 313
 314 static void be_tx_stats_update(struct be_adapter *adapter,
 315                         u32 wrb_cnt, u32 copied, bool stopped)
 316 {
 317         struct be_drvr_stats *stats = drvr_stats(adapter);
 318         stats->be_tx_reqs++;
 319         stats->be_tx_wrbs += wrb_cnt;
 320         stats->be_tx_bytes += copied;
 321         if (stopped)
 322                 stats->be_tx_stops++;
 323 }
 324
 325 /* Determine number of WRB entries needed to xmit data in an skb */
 326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 327 {
 328         int cnt = (skb->len > skb->data_len);
 329
 330         cnt += skb_shinfo(skb)->nr_frags;
 331
 332         /* to account for hdr wrb */
 333         cnt++;
 334         if (cnt & 1) {
 335                 /* add a dummy to make it an even num */
 336                 cnt++;
 337                 *dummy = true;
 338         } else
 339                 *dummy = false;
 340         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 341         return cnt;
 342 }
 343
 344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 345 {
 346         wrb->frag_pa_hi = upper_32_bits(addr);
 347         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 348         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 349 }
 350
 351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 352                 bool vlan, u32 wrb_cnt, u32 len)
 353 {
 354         memset(hdr, 0, sizeof(*hdr));
 355
 356         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 357
 358         if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
 359                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 360                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 361                         hdr, skb_shinfo(skb)->gso_size);
 362         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 363                 if (is_tcp_pkt(skb))
 364                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 365                 else if (is_udp_pkt(skb))
 366                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 367         }
 368
 369         if (vlan && vlan_tx_tag_present(skb)) {
 370                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 371                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 372                         hdr, vlan_tx_tag_get(skb));
 373         }
 374
 375         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 376         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 377         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 378         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 379 }
 380
 381
 382 static int make_tx_wrbs(struct be_adapter *adapter,
 383                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 384 {
 385         u64 busaddr;
 386         u32 i, copied = 0;
 387         struct pci_dev *pdev = adapter->pdev;
 388         struct sk_buff *first_skb = skb;
 389         struct be_queue_info *txq = &adapter->tx_obj.q;
 390         struct be_eth_wrb *wrb;
 391         struct be_eth_hdr_wrb *hdr;
 392
 393         hdr = queue_head_node(txq);
 394         atomic_add(wrb_cnt, &txq->used);
 395         queue_head_inc(txq);
 396
 397         if (skb->len > skb->data_len) {
 398                 int len = skb->len - skb->data_len;
 399                 busaddr = pci_map_single(pdev, skb->data, len,
 400                                          PCI_DMA_TODEVICE);
 401                 wrb = queue_head_node(txq);
 402                 wrb_fill(wrb, busaddr, len);
 403                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 404                 queue_head_inc(txq);
 405                 copied += len;
 406         }
 407
 408         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 409                 struct skb_frag_struct *frag =
 410                         &skb_shinfo(skb)->frags[i];
 411                 busaddr = pci_map_page(pdev, frag->page,
 412                                        frag->page_offset,
 413                                        frag->size, PCI_DMA_TODEVICE);
 414                 wrb = queue_head_node(txq);
 415                 wrb_fill(wrb, busaddr, frag->size);
 416                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 417                 queue_head_inc(txq);
 418                 copied += frag->size;
 419         }
 420
 421         if (dummy_wrb) {
 422                 wrb = queue_head_node(txq);
 423                 wrb_fill(wrb, 0, 0);
 424                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 425                 queue_head_inc(txq);
 426         }
 427
 428         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 429                 wrb_cnt, copied);
 430         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 431
 432         return copied;
 433 }
 434
 435 static netdev_tx_t be_xmit(struct sk_buff *skb,
 436                         struct net_device *netdev)
 437 {
 438         struct be_adapter *adapter = netdev_priv(netdev);
 439         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 440         struct be_queue_info *txq = &tx_obj->q;
 441         u32 wrb_cnt = 0, copied = 0;
 442         u32 start = txq->head;
 443         bool dummy_wrb, stopped = false;
 444
 445         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 446
 447         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 448         if (copied) {
 449                 /* record the sent skb in the sent_skb table */
 450                 BUG_ON(tx_obj->sent_skb_list[start]);
 451                 tx_obj->sent_skb_list[start] = skb;
 452
 453                 /* Ensure txq has space for the next skb; Else stop the queue
 454                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 455                  * tx compls of the current transmit which'll wake up the queue
 456                  */
 457                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 458                                                                 txq->len) {
 459                         netif_stop_queue(netdev);
 460                         stopped = true;
 461                 }
 462
 463                 be_txq_notify(adapter, txq->id, wrb_cnt);
 464
 465                 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
 466         } else {
 467                 txq->head = start;
 468                 dev_kfree_skb_any(skb);
 469         }
 470         return NETDEV_TX_OK;
 471 }
 472
 473 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 474 {
 475         struct be_adapter *adapter = netdev_priv(netdev);
 476         if (new_mtu < BE_MIN_MTU ||
 477                         new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
 478                 dev_info(&adapter->pdev->dev,
 479                         "MTU must be between %d and %d bytes\n",
 480                         BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
 481                 return -EINVAL;
 482         }
 483         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 484                         netdev->mtu, new_mtu);
 485         netdev->mtu = new_mtu;
 486         return 0;
 487 }
 488
 489 /*
 490  * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
 491  * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
 492  * set the BE in promiscuous VLAN mode.
 493  */
 494 static int be_vid_config(struct be_adapter *adapter)
 495 {
 496         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 497         u16 ntags = 0, i;
 498         int status;
 499
 500         if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
 501                 /* Construct VLAN Table to give to HW */
 502                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 503                         if (adapter->vlan_tag[i]) {
 504                                 vtag[ntags] = cpu_to_le16(i);
 505                                 ntags++;
 506                         }
 507                 }
 508                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 509                                         vtag, ntags, 1, 0);
 510         } else {
 511                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 512                                         NULL, 0, 1, 1);
 513         }
 514         return status;
 515 }
 516
 517 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 518 {
 519         struct be_adapter *adapter = netdev_priv(netdev);
 520         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 521         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 522
 523         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 524         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 525         adapter->vlan_grp = grp;
 526         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 527         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 528 }
 529
 530 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 531 {
 532         struct be_adapter *adapter = netdev_priv(netdev);
 533
 534         adapter->num_vlans++;
 535         adapter->vlan_tag[vid] = 1;
 536
 537         be_vid_config(adapter);
 538 }
 539
 540 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 541 {
 542         struct be_adapter *adapter = netdev_priv(netdev);
 543
 544         adapter->num_vlans--;
 545         adapter->vlan_tag[vid] = 0;
 546
 547         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 548         be_vid_config(adapter);
 549 }
 550
 551 static void be_set_multicast_list(struct net_device *netdev)
 552 {
 553         struct be_adapter *adapter = netdev_priv(netdev);
 554
 555         if (netdev->flags & IFF_PROMISC) {
 556                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 557                 adapter->promiscuous = true;
 558                 goto done;
 559         }
 560
 561         /* BE was previously in promiscous mode; disable it */
 562         if (adapter->promiscuous) {
 563                 adapter->promiscuous = false;
 564                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 565         }
 566
 567         /* Enable multicast promisc if num configured exceeds what we support */
 568         if (netdev->flags & IFF_ALLMULTI || netdev->mc_count > BE_MAX_MC) {
 569                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
 570                                 &adapter->mc_cmd_mem);
 571                 goto done;
 572         }
 573
 574         be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
 575                 netdev->mc_count, &adapter->mc_cmd_mem);
 576 done:
 577         return;
 578 }
 579
 580 static void be_rx_rate_update(struct be_adapter *adapter)
 581 {
 582         struct be_drvr_stats *stats = drvr_stats(adapter);
 583         ulong now = jiffies;
 584
 585         /* Wrapped around */
 586         if (time_before(now, stats->be_rx_jiffies)) {
 587                 stats->be_rx_jiffies = now;
 588                 return;
 589         }
 590
 591         /* Update the rate once in two seconds */
 592         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 593                 return;
 594
 595         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 596                                           - stats->be_rx_bytes_prev,
 597                                          now - stats->be_rx_jiffies);
 598         stats->be_rx_jiffies = now;
 599         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 600 }
 601
 602 static void be_rx_stats_update(struct be_adapter *adapter,
 603                 u32 pktsize, u16 numfrags)
 604 {
 605         struct be_drvr_stats *stats = drvr_stats(adapter);
 606
 607         stats->be_rx_compl++;
 608         stats->be_rx_frags += numfrags;
 609         stats->be_rx_bytes += pktsize;
 610 }
 611
 612 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 613 {
 614         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 615
 616         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 617         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 618         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 619         if (ip_version) {
 620                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 621                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 622         }
 623         ipv6_chk = (ip_version && (tcpf || udpf));
 624
 625         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 626 }
 627
 628 static struct be_rx_page_info *
 629 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 630 {
 631         struct be_rx_page_info *rx_page_info;
 632         struct be_queue_info *rxq = &adapter->rx_obj.q;
 633
 634         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 635         BUG_ON(!rx_page_info->page);
 636
 637         if (rx_page_info->last_page_user)
 638                 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
 639                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 640
 641         atomic_dec(&rxq->used);
 642         return rx_page_info;
 643 }
 644
 645 /* Throwaway the data in the Rx completion */
 646 static void be_rx_compl_discard(struct be_adapter *adapter,
 647                         struct be_eth_rx_compl *rxcp)
 648 {
 649         struct be_queue_info *rxq = &adapter->rx_obj.q;
 650         struct be_rx_page_info *page_info;
 651         u16 rxq_idx, i, num_rcvd;
 652
 653         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 654         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 655
 656         for (i = 0; i < num_rcvd; i++) {
 657                 page_info = get_rx_page_info(adapter, rxq_idx);
 658                 put_page(page_info->page);
 659                 memset(page_info, 0, sizeof(*page_info));
 660                 index_inc(&rxq_idx, rxq->len);
 661         }
 662 }
 663
 664 /*
 665  * skb_fill_rx_data forms a complete skb for an ether frame
 666  * indicated by rxcp.
 667  */
 668 static void skb_fill_rx_data(struct be_adapter *adapter,
 669                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
 670 {
 671         struct be_queue_info *rxq = &adapter->rx_obj.q;
 672         struct be_rx_page_info *page_info;
 673         u16 rxq_idx, i, num_rcvd, j;
 674         u32 pktsize, hdr_len, curr_frag_len, size;
 675         u8 *start;
 676
 677         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 678         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 679         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 680
 681         page_info = get_rx_page_info(adapter, rxq_idx);
 682
 683         start = page_address(page_info->page) + page_info->page_offset;
 684         prefetch(start);
 685
 686         /* Copy data in the first descriptor of this completion */
 687         curr_frag_len = min(pktsize, rx_frag_size);
 688
 689         /* Copy the header portion into skb_data */
 690         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 691         memcpy(skb->data, start, hdr_len);
 692         skb->len = curr_frag_len;
 693         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 694                 /* Complete packet has now been moved to data */
 695                 put_page(page_info->page);
 696                 skb->data_len = 0;
 697                 skb->tail += curr_frag_len;
 698         } else {
 699                 skb_shinfo(skb)->nr_frags = 1;
 700                 skb_shinfo(skb)->frags[0].page = page_info->page;
 701                 skb_shinfo(skb)->frags[0].page_offset =
 702                                         page_info->page_offset + hdr_len;
 703                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 704                 skb->data_len = curr_frag_len - hdr_len;
 705                 skb->tail += hdr_len;
 706         }
 707         memset(page_info, 0, sizeof(*page_info));
 708
 709         if (pktsize <= rx_frag_size) {
 710                 BUG_ON(num_rcvd != 1);
 711                 goto done;
 712         }
 713
 714         /* More frags present for this completion */
 715         size = pktsize;
 716         for (i = 1, j = 0; i < num_rcvd; i++) {
 717                 size -= curr_frag_len;
 718                 index_inc(&rxq_idx, rxq->len);
 719                 page_info = get_rx_page_info(adapter, rxq_idx);
 720
 721                 curr_frag_len = min(size, rx_frag_size);
 722
 723                 /* Coalesce all frags from the same physical page in one slot */
 724                 if (page_info->page_offset == 0) {
 725                         /* Fresh page */
 726                         j++;
 727                         skb_shinfo(skb)->frags[j].page = page_info->page;
 728                         skb_shinfo(skb)->frags[j].page_offset =
 729                                                         page_info->page_offset;
 730                         skb_shinfo(skb)->frags[j].size = 0;
 731                         skb_shinfo(skb)->nr_frags++;
 732                 } else {
 733                         put_page(page_info->page);
 734                 }
 735
 736                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 737                 skb->len += curr_frag_len;
 738                 skb->data_len += curr_frag_len;
 739
 740                 memset(page_info, 0, sizeof(*page_info));
 741         }
 742         BUG_ON(j > MAX_SKB_FRAGS);
 743
 744 done:
 745         be_rx_stats_update(adapter, pktsize, num_rcvd);
 746         return;
 747 }
 748
 749 /* Process the RX completion indicated by rxcp when GRO is disabled */
 750 static void be_rx_compl_process(struct be_adapter *adapter,
 751                         struct be_eth_rx_compl *rxcp)
 752 {
 753         struct sk_buff *skb;
 754         u32 vlanf, vid;
 755         u8 vtm;
 756
 757         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 758         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 759
 760         /* vlanf could be wrongly set in some cards.
 761          * ignore if vtm is not set */
 762         if ((adapter->cap & 0x400) && !vtm)
 763                 vlanf = 0;
 764
 765         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 766         if (!skb) {
 767                 if (net_ratelimit())
 768                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 769                 be_rx_compl_discard(adapter, rxcp);
 770                 return;
 771         }
 772
 773         skb_fill_rx_data(adapter, skb, rxcp);
 774
 775         if (do_pkt_csum(rxcp, adapter->rx_csum))
 776                 skb->ip_summed = CHECKSUM_NONE;
 777         else
 778                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 779
 780         skb->truesize = skb->len + sizeof(struct sk_buff);
 781         skb->protocol = eth_type_trans(skb, adapter->netdev);
 782         skb->dev = adapter->netdev;
 783
 784         if (vlanf) {
 785                 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
 786                         kfree_skb(skb);
 787                         return;
 788                 }
 789                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 790                 vid = be16_to_cpu(vid);
 791                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 792         } else {
 793                 netif_receive_skb(skb);
 794         }
 795
 796         return;
 797 }
 798
 799 /* Process the RX completion indicated by rxcp when GRO is enabled */
 800 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 801                         struct be_eth_rx_compl *rxcp)
 802 {
 803         struct be_rx_page_info *page_info;
 804         struct sk_buff *skb = NULL;
 805         struct be_queue_info *rxq = &adapter->rx_obj.q;
 806         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 807         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 808         u16 i, rxq_idx = 0, vid, j;
 809         u8 vtm;
 810
 811         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 812         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 813         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 814         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 815         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 816
 817         /* vlanf could be wrongly set in some cards.
 818          * ignore if vtm is not set */
 819         if ((adapter->cap & 0x400) && !vtm)
 820                 vlanf = 0;
 821
 822         skb = napi_get_frags(&eq_obj->napi);
 823         if (!skb) {
 824                 be_rx_compl_discard(adapter, rxcp);
 825                 return;
 826         }
 827
 828         remaining = pkt_size;
 829         for (i = 0, j = -1; i < num_rcvd; i++) {
 830                 page_info = get_rx_page_info(adapter, rxq_idx);
 831
 832                 curr_frag_len = min(remaining, rx_frag_size);
 833
 834                 /* Coalesce all frags from the same physical page in one slot */
 835                 if (i == 0 || page_info->page_offset == 0) {
 836                         /* First frag or Fresh page */
 837                         j++;
 838                         skb_shinfo(skb)->frags[j].page = page_info->page;
 839                         skb_shinfo(skb)->frags[j].page_offset =
 840                                                         page_info->page_offset;
 841                         skb_shinfo(skb)->frags[j].size = 0;
 842                 } else {
 843                         put_page(page_info->page);
 844                 }
 845                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 846
 847                 remaining -= curr_frag_len;
 848                 index_inc(&rxq_idx, rxq->len);
 849                 memset(page_info, 0, sizeof(*page_info));
 850         }
 851         BUG_ON(j > MAX_SKB_FRAGS);
 852
 853         skb_shinfo(skb)->nr_frags = j + 1;
 854         skb->len = pkt_size;
 855         skb->data_len = pkt_size;
 856         skb->truesize += pkt_size;
 857         skb->ip_summed = CHECKSUM_UNNECESSARY;
 858
 859         if (likely(!vlanf)) {
 860                 napi_gro_frags(&eq_obj->napi);
 861         } else {
 862                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 863                 vid = be16_to_cpu(vid);
 864
 865                 if (!adapter->vlan_grp || adapter->num_vlans == 0)
 866                         return;
 867
 868                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 869         }
 870
 871         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 872         return;
 873 }
 874
 875 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 876 {
 877         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 878
 879         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 880                 return NULL;
 881
 882         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 883
 884         queue_tail_inc(&adapter->rx_obj.cq);
 885         return rxcp;
 886 }
 887
 888 /* To reset the valid bit, we need to reset the whole word as
 889  * when walking the queue the valid entries are little-endian
 890  * and invalid entries are host endian
 891  */
 892 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 893 {
 894         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 895 }
 896
 897 static inline struct page *be_alloc_pages(u32 size)
 898 {
 899         gfp_t alloc_flags = GFP_ATOMIC;
 900         u32 order = get_order(size);
 901         if (order > 0)
 902                 alloc_flags |= __GFP_COMP;
 903         return  alloc_pages(alloc_flags, order);
 904 }
 905
 906 /*
 907  * Allocate a page, split it to fragments of size rx_frag_size and post as
 908  * receive buffers to BE
 909  */
 910 static void be_post_rx_frags(struct be_adapter *adapter)
 911 {
 912         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
 913         struct be_rx_page_info *page_info = NULL;
 914         struct be_queue_info *rxq = &adapter->rx_obj.q;
 915         struct page *pagep = NULL;
 916         struct be_eth_rx_d *rxd;
 917         u64 page_dmaaddr = 0, frag_dmaaddr;
 918         u32 posted, page_offset = 0;
 919
 920         page_info = &page_info_tbl[rxq->head];
 921         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
 922                 if (!pagep) {
 923                         pagep = be_alloc_pages(adapter->big_page_size);
 924                         if (unlikely(!pagep)) {
 925                                 drvr_stats(adapter)->be_ethrx_post_fail++;
 926                                 break;
 927                         }
 928                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
 929                                                 adapter->big_page_size,
 930                                                 PCI_DMA_FROMDEVICE);
 931                         page_info->page_offset = 0;
 932                 } else {
 933                         get_page(pagep);
 934                         page_info->page_offset = page_offset + rx_frag_size;
 935                 }
 936                 page_offset = page_info->page_offset;
 937                 page_info->page = pagep;
 938                 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
 939                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
 940
 941                 rxd = queue_head_node(rxq);
 942                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
 943                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
 944                 queue_head_inc(rxq);
 945
 946                 /* Any space left in the current big page for another frag? */
 947                 if ((page_offset + rx_frag_size + rx_frag_size) >
 948                                         adapter->big_page_size) {
 949                         pagep = NULL;
 950                         page_info->last_page_user = true;
 951                 }
 952                 page_info = &page_info_tbl[rxq->head];
 953         }
 954         if (pagep)
 955                 page_info->last_page_user = true;
 956
 957         if (posted) {
 958                 atomic_add(posted, &rxq->used);
 959                 be_rxq_notify(adapter, rxq->id, posted);
 960         } else if (atomic_read(&rxq->used) == 0) {
 961                 /* Let be_worker replenish when memory is available */
 962                 adapter->rx_post_starved = true;
 963         }
 964
 965         return;
 966 }
 967
 968 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
 969 {
 970         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
 971
 972         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
 973                 return NULL;
 974
 975         be_dws_le_to_cpu(txcp, sizeof(*txcp));
 976
 977         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
 978
 979         queue_tail_inc(tx_cq);
 980         return txcp;
 981 }
 982
 983 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
 984 {
 985         struct be_queue_info *txq = &adapter->tx_obj.q;
 986         struct be_eth_wrb *wrb;
 987         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
 988         struct sk_buff *sent_skb;
 989         u64 busaddr;
 990         u16 cur_index, num_wrbs = 0;
 991
 992         cur_index = txq->tail;
 993         sent_skb = sent_skbs[cur_index];
 994         BUG_ON(!sent_skb);
 995         sent_skbs[cur_index] = NULL;
 996         wrb = queue_tail_node(txq);
 997         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 998         busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
 999         if (busaddr != 0) {
1000                 pci_unmap_single(adapter->pdev, busaddr,
1001                                  wrb->frag_len, PCI_DMA_TODEVICE);
1002         }
1003         num_wrbs++;
1004         queue_tail_inc(txq);
1005
1006         while (cur_index != last_index) {
1007                 cur_index = txq->tail;
1008                 wrb = queue_tail_node(txq);
1009                 be_dws_le_to_cpu(wrb, sizeof(*wrb));
1010                 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
1011                 if (busaddr != 0) {
1012                         pci_unmap_page(adapter->pdev, busaddr,
1013                                        wrb->frag_len, PCI_DMA_TODEVICE);
1014                 }
1015                 num_wrbs++;
1016                 queue_tail_inc(txq);
1017         }
1018
1019         atomic_sub(num_wrbs, &txq->used);
1020
1021         kfree_skb(sent_skb);
1022 }
1023
1024 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1025 {
1026         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1027
1028         if (!eqe->evt)
1029                 return NULL;
1030
1031         eqe->evt = le32_to_cpu(eqe->evt);
1032         queue_tail_inc(&eq_obj->q);
1033         return eqe;
1034 }
1035
1036 static int event_handle(struct be_adapter *adapter,
1037                         struct be_eq_obj *eq_obj)
1038 {
1039         struct be_eq_entry *eqe;
1040         u16 num = 0;
1041
1042         while ((eqe = event_get(eq_obj)) != NULL) {
1043                 eqe->evt = 0;
1044                 num++;
1045         }
1046
1047         /* Deal with any spurious interrupts that come
1048          * without events
1049          */
1050         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1051         if (num)
1052                 napi_schedule(&eq_obj->napi);
1053
1054         return num;
1055 }
1056
1057 /* Just read and notify events without processing them.
1058  * Used at the time of destroying event queues */
1059 static void be_eq_clean(struct be_adapter *adapter,
1060                         struct be_eq_obj *eq_obj)
1061 {
1062         struct be_eq_entry *eqe;
1063         u16 num = 0;
1064
1065         while ((eqe = event_get(eq_obj)) != NULL) {
1066                 eqe->evt = 0;
1067                 num++;
1068         }
1069
1070         if (num)
1071                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1072 }
1073
1074 static void be_rx_q_clean(struct be_adapter *adapter)
1075 {
1076         struct be_rx_page_info *page_info;
1077         struct be_queue_info *rxq = &adapter->rx_obj.q;
1078         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1079         struct be_eth_rx_compl *rxcp;
1080         u16 tail;
1081
1082         /* First cleanup pending rx completions */
1083         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1084                 be_rx_compl_discard(adapter, rxcp);
1085                 be_rx_compl_reset(rxcp);
1086                 be_cq_notify(adapter, rx_cq->id, true, 1);
1087         }
1088
1089         /* Then free posted rx buffer that were not used */
1090         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1091         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1092                 page_info = get_rx_page_info(adapter, tail);
1093                 put_page(page_info->page);
1094                 memset(page_info, 0, sizeof(*page_info));
1095         }
1096         BUG_ON(atomic_read(&rxq->used));
1097 }
1098
1099 static void be_tx_compl_clean(struct be_adapter *adapter)
1100 {
1101         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1102         struct be_queue_info *txq = &adapter->tx_obj.q;
1103         struct be_eth_tx_compl *txcp;
1104         u16 end_idx, cmpl = 0, timeo = 0;
1105
1106         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1107         do {
1108                 while ((txcp = be_tx_compl_get(tx_cq))) {
1109                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1110                                         wrb_index, txcp);
1111                         be_tx_compl_process(adapter, end_idx);
1112                         cmpl++;
1113                 }
1114                 if (cmpl) {
1115                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1116                         cmpl = 0;
1117                 }
1118
1119                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1120                         break;
1121
1122                 mdelay(1);
1123         } while (true);
1124
1125         if (atomic_read(&txq->used))
1126                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1127                         atomic_read(&txq->used));
1128 }
1129
1130 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1131 {
1132         struct be_queue_info *q;
1133
1134         q = &adapter->mcc_obj.q;
1135         if (q->created)
1136                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1137         be_queue_free(adapter, q);
1138
1139         q = &adapter->mcc_obj.cq;
1140         if (q->created)
1141                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1142         be_queue_free(adapter, q);
1143 }
1144
1145 /* Must be called only after TX qs are created as MCC shares TX EQ */
1146 static int be_mcc_queues_create(struct be_adapter *adapter)
1147 {
1148         struct be_queue_info *q, *cq;
1149
1150         /* Alloc MCC compl queue */
1151         cq = &adapter->mcc_obj.cq;
1152         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1153                         sizeof(struct be_mcc_compl)))
1154                 goto err;
1155
1156         /* Ask BE to create MCC compl queue; share TX's eq */
1157         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1158                 goto mcc_cq_free;
1159
1160         /* Alloc MCC queue */
1161         q = &adapter->mcc_obj.q;
1162         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1163                 goto mcc_cq_destroy;
1164
1165         /* Ask BE to create MCC queue */
1166         if (be_cmd_mccq_create(adapter, q, cq))
1167                 goto mcc_q_free;
1168
1169         return 0;
1170
1171 mcc_q_free:
1172         be_queue_free(adapter, q);
1173 mcc_cq_destroy:
1174         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1175 mcc_cq_free:
1176         be_queue_free(adapter, cq);
1177 err:
1178         return -1;
1179 }
1180
1181 static void be_tx_queues_destroy(struct be_adapter *adapter)
1182 {
1183         struct be_queue_info *q;
1184
1185         q = &adapter->tx_obj.q;
1186         if (q->created)
1187                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1188         be_queue_free(adapter, q);
1189
1190         q = &adapter->tx_obj.cq;
1191         if (q->created)
1192                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1193         be_queue_free(adapter, q);
1194
1195         /* Clear any residual events */
1196         be_eq_clean(adapter, &adapter->tx_eq);
1197
1198         q = &adapter->tx_eq.q;
1199         if (q->created)
1200                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1201         be_queue_free(adapter, q);
1202 }
1203
1204 static int be_tx_queues_create(struct be_adapter *adapter)
1205 {
1206         struct be_queue_info *eq, *q, *cq;
1207
1208         adapter->tx_eq.max_eqd = 0;
1209         adapter->tx_eq.min_eqd = 0;
1210         adapter->tx_eq.cur_eqd = 96;
1211         adapter->tx_eq.enable_aic = false;
1212         /* Alloc Tx Event queue */
1213         eq = &adapter->tx_eq.q;
1214         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1215                 return -1;
1216
1217         /* Ask BE to create Tx Event queue */
1218         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1219                 goto tx_eq_free;
1220         /* Alloc TX eth compl queue */
1221         cq = &adapter->tx_obj.cq;
1222         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1223                         sizeof(struct be_eth_tx_compl)))
1224                 goto tx_eq_destroy;
1225
1226         /* Ask BE to create Tx eth compl queue */
1227         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1228                 goto tx_cq_free;
1229
1230         /* Alloc TX eth queue */
1231         q = &adapter->tx_obj.q;
1232         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1233                 goto tx_cq_destroy;
1234
1235         /* Ask BE to create Tx eth queue */
1236         if (be_cmd_txq_create(adapter, q, cq))
1237                 goto tx_q_free;
1238         return 0;
1239
1240 tx_q_free:
1241         be_queue_free(adapter, q);
1242 tx_cq_destroy:
1243         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1244 tx_cq_free:
1245         be_queue_free(adapter, cq);
1246 tx_eq_destroy:
1247         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1248 tx_eq_free:
1249         be_queue_free(adapter, eq);
1250         return -1;
1251 }
1252
1253 static void be_rx_queues_destroy(struct be_adapter *adapter)
1254 {
1255         struct be_queue_info *q;
1256
1257         q = &adapter->rx_obj.q;
1258         if (q->created) {
1259                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1260                 be_rx_q_clean(adapter);
1261         }
1262         be_queue_free(adapter, q);
1263
1264         q = &adapter->rx_obj.cq;
1265         if (q->created)
1266                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1267         be_queue_free(adapter, q);
1268
1269         /* Clear any residual events */
1270         be_eq_clean(adapter, &adapter->rx_eq);
1271
1272         q = &adapter->rx_eq.q;
1273         if (q->created)
1274                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1275         be_queue_free(adapter, q);
1276 }
1277
1278 static int be_rx_queues_create(struct be_adapter *adapter)
1279 {
1280         struct be_queue_info *eq, *q, *cq;
1281         int rc;
1282
1283         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1284         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1285         adapter->rx_eq.min_eqd = 0;
1286         adapter->rx_eq.cur_eqd = 0;
1287         adapter->rx_eq.enable_aic = true;
1288
1289         /* Alloc Rx Event queue */
1290         eq = &adapter->rx_eq.q;
1291         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1292                                 sizeof(struct be_eq_entry));
1293         if (rc)
1294                 return rc;
1295
1296         /* Ask BE to create Rx Event queue */
1297         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1298         if (rc)
1299                 goto rx_eq_free;
1300
1301         /* Alloc RX eth compl queue */
1302         cq = &adapter->rx_obj.cq;
1303         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1304                         sizeof(struct be_eth_rx_compl));
1305         if (rc)
1306                 goto rx_eq_destroy;
1307
1308         /* Ask BE to create Rx eth compl queue */
1309         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1310         if (rc)
1311                 goto rx_cq_free;
1312
1313         /* Alloc RX eth queue */
1314         q = &adapter->rx_obj.q;
1315         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1316         if (rc)
1317                 goto rx_cq_destroy;
1318
1319         /* Ask BE to create Rx eth queue */
1320         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1321                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1322         if (rc)
1323                 goto rx_q_free;
1324
1325         return 0;
1326 rx_q_free:
1327         be_queue_free(adapter, q);
1328 rx_cq_destroy:
1329         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1330 rx_cq_free:
1331         be_queue_free(adapter, cq);
1332 rx_eq_destroy:
1333         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1334 rx_eq_free:
1335         be_queue_free(adapter, eq);
1336         return rc;
1337 }
1338
1339 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1340 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1341 {
1342         return eq_id - 8 * be_pci_func(adapter);
1343 }
1344
1345 static irqreturn_t be_intx(int irq, void *dev)
1346 {
1347         struct be_adapter *adapter = dev;
1348         int isr;
1349
1350         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1351                         be_pci_func(adapter) * CEV_ISR_SIZE);
1352         if (!isr)
1353                 return IRQ_NONE;
1354
1355         event_handle(adapter, &adapter->tx_eq);
1356         event_handle(adapter, &adapter->rx_eq);
1357
1358         return IRQ_HANDLED;
1359 }
1360
1361 static irqreturn_t be_msix_rx(int irq, void *dev)
1362 {
1363         struct be_adapter *adapter = dev;
1364
1365         event_handle(adapter, &adapter->rx_eq);
1366
1367         return IRQ_HANDLED;
1368 }
1369
1370 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1371 {
1372         struct be_adapter *adapter = dev;
1373
1374         event_handle(adapter, &adapter->tx_eq);
1375
1376         return IRQ_HANDLED;
1377 }
1378
1379 static inline bool do_gro(struct be_adapter *adapter,
1380                         struct be_eth_rx_compl *rxcp)
1381 {
1382         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1383         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1384
1385         if (err)
1386                 drvr_stats(adapter)->be_rxcp_err++;
1387
1388         return (tcp_frame && !err) ? true : false;
1389 }
1390
1391 int be_poll_rx(struct napi_struct *napi, int budget)
1392 {
1393         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1394         struct be_adapter *adapter =
1395                 container_of(rx_eq, struct be_adapter, rx_eq);
1396         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1397         struct be_eth_rx_compl *rxcp;
1398         u32 work_done;
1399
1400         adapter->stats.drvr_stats.be_rx_polls++;
1401         for (work_done = 0; work_done < budget; work_done++) {
1402                 rxcp = be_rx_compl_get(adapter);
1403                 if (!rxcp)
1404                         break;
1405
1406                 if (do_gro(adapter, rxcp))
1407                         be_rx_compl_process_gro(adapter, rxcp);
1408                 else
1409                         be_rx_compl_process(adapter, rxcp);
1410
1411                 be_rx_compl_reset(rxcp);
1412         }
1413
1414         /* Refill the queue */
1415         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1416                 be_post_rx_frags(adapter);
1417
1418         /* All consumed */
1419         if (work_done < budget) {
1420                 napi_complete(napi);
1421                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1422         } else {
1423                 /* More to be consumed; continue with interrupts disabled */
1424                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1425         }
1426         return work_done;
1427 }
1428
1429 void be_process_tx(struct be_adapter *adapter)
1430 {
1431         struct be_queue_info *txq = &adapter->tx_obj.q;
1432         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1433         struct be_eth_tx_compl *txcp;
1434         u32 num_cmpl = 0;
1435         u16 end_idx;
1436
1437         while ((txcp = be_tx_compl_get(tx_cq))) {
1438                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1439                                         wrb_index, txcp);
1440                 be_tx_compl_process(adapter, end_idx);
1441                 num_cmpl++;
1442         }
1443
1444         if (num_cmpl) {
1445                 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1446
1447                 /* As Tx wrbs have been freed up, wake up netdev queue if
1448                  * it was stopped due to lack of tx wrbs.
1449                  */
1450                 if (netif_queue_stopped(adapter->netdev) &&
1451                         atomic_read(&txq->used) < txq->len / 2) {
1452                         netif_wake_queue(adapter->netdev);
1453                 }
1454
1455                 drvr_stats(adapter)->be_tx_events++;
1456                 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1457         }
1458 }
1459
1460 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1461  * For TX/MCC we don't honour budget; consume everything
1462  */
1463 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1464 {
1465         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1466         struct be_adapter *adapter =
1467                 container_of(tx_eq, struct be_adapter, tx_eq);
1468
1469         napi_complete(napi);
1470
1471         be_process_tx(adapter);
1472
1473         be_process_mcc(adapter);
1474
1475         return 1;
1476 }
1477
1478 static void be_worker(struct work_struct *work)
1479 {
1480         struct be_adapter *adapter =
1481                 container_of(work, struct be_adapter, work.work);
1482
1483         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1484
1485         /* Set EQ delay */
1486         be_rx_eqd_update(adapter);
1487
1488         be_tx_rate_update(adapter);
1489         be_rx_rate_update(adapter);
1490
1491         if (adapter->rx_post_starved) {
1492                 adapter->rx_post_starved = false;
1493                 be_post_rx_frags(adapter);
1494         }
1495
1496         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1497 }
1498
1499 static void be_msix_disable(struct be_adapter *adapter)
1500 {
1501         if (adapter->msix_enabled) {
1502                 pci_disable_msix(adapter->pdev);
1503                 adapter->msix_enabled = false;
1504         }
1505 }
1506
1507 static void be_msix_enable(struct be_adapter *adapter)
1508 {
1509         int i, status;
1510
1511         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1512                 adapter->msix_entries[i].entry = i;
1513
1514         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1515                 BE_NUM_MSIX_VECTORS);
1516         if (status == 0)
1517                 adapter->msix_enabled = true;
1518         return;
1519 }
1520
1521 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1522 {
1523         return adapter->msix_entries[
1524                         be_evt_bit_get(adapter, eq_id)].vector;
1525 }
1526
1527 static int be_request_irq(struct be_adapter *adapter,
1528                 struct be_eq_obj *eq_obj,
1529                 void *handler, char *desc)
1530 {
1531         struct net_device *netdev = adapter->netdev;
1532         int vec;
1533
1534         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1535         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1536         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1537 }
1538
1539 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1540 {
1541         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1542         free_irq(vec, adapter);
1543 }
1544
1545 static int be_msix_register(struct be_adapter *adapter)
1546 {
1547         int status;
1548
1549         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1550         if (status)
1551                 goto err;
1552
1553         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1554         if (status)
1555                 goto free_tx_irq;
1556
1557         return 0;
1558
1559 free_tx_irq:
1560         be_free_irq(adapter, &adapter->tx_eq);
1561 err:
1562         dev_warn(&adapter->pdev->dev,
1563                 "MSIX Request IRQ failed - err %d\n", status);
1564         pci_disable_msix(adapter->pdev);
1565         adapter->msix_enabled = false;
1566         return status;
1567 }
1568
1569 static int be_irq_register(struct be_adapter *adapter)
1570 {
1571         struct net_device *netdev = adapter->netdev;
1572         int status;
1573
1574         if (adapter->msix_enabled) {
1575                 status = be_msix_register(adapter);
1576                 if (status == 0)
1577                         goto done;
1578         }
1579
1580         /* INTx */
1581         netdev->irq = adapter->pdev->irq;
1582         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1583                         adapter);
1584         if (status) {
1585                 dev_err(&adapter->pdev->dev,
1586                         "INTx request IRQ failed - err %d\n", status);
1587                 return status;
1588         }
1589 done:
1590         adapter->isr_registered = true;
1591         return 0;
1592 }
1593
1594 static void be_irq_unregister(struct be_adapter *adapter)
1595 {
1596         struct net_device *netdev = adapter->netdev;
1597
1598         if (!adapter->isr_registered)
1599                 return;
1600
1601         /* INTx */
1602         if (!adapter->msix_enabled) {
1603                 free_irq(netdev->irq, adapter);
1604                 goto done;
1605         }
1606
1607         /* MSIx */
1608         be_free_irq(adapter, &adapter->tx_eq);
1609         be_free_irq(adapter, &adapter->rx_eq);
1610 done:
1611         adapter->isr_registered = false;
1612         return;
1613 }
1614
1615 static int be_open(struct net_device *netdev)
1616 {
1617         struct be_adapter *adapter = netdev_priv(netdev);
1618         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1619         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1620         bool link_up;
1621         int status;
1622         u8 mac_speed;
1623         u16 link_speed;
1624
1625         /* First time posting */
1626         be_post_rx_frags(adapter);
1627
1628         napi_enable(&rx_eq->napi);
1629         napi_enable(&tx_eq->napi);
1630
1631         be_irq_register(adapter);
1632
1633         be_intr_set(adapter, true);
1634
1635         /* The evt queues are created in unarmed state; arm them */
1636         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1637         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1638
1639         /* Rx compl queue may be in unarmed state; rearm it */
1640         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1641
1642         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1643                         &link_speed);
1644         if (status)
1645                 goto ret_sts;
1646         be_link_status_update(adapter, link_up);
1647
1648         status = be_vid_config(adapter);
1649         if (status)
1650                 goto ret_sts;
1651
1652         status = be_cmd_set_flow_control(adapter,
1653                                         adapter->tx_fc, adapter->rx_fc);
1654         if (status)
1655                 goto ret_sts;
1656
1657         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1658 ret_sts:
1659         return status;
1660 }
1661
1662 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1663 {
1664         struct be_dma_mem cmd;
1665         int status = 0;
1666         u8 mac[ETH_ALEN];
1667
1668         memset(mac, 0, ETH_ALEN);
1669
1670         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1671         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1672         if (cmd.va == NULL)
1673                 return -1;
1674         memset(cmd.va, 0, cmd.size);
1675
1676         if (enable) {
1677                 status = pci_write_config_dword(adapter->pdev,
1678                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1679                 if (status) {
1680                         dev_err(&adapter->pdev->dev,
1681                                 "Could not enable Wake-on-lan \n");
1682                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1683                                         cmd.dma);
1684                         return status;
1685                 }
1686                 status = be_cmd_enable_magic_wol(adapter,
1687                                 adapter->netdev->dev_addr, &cmd);
1688                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1689                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1690         } else {
1691                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1692                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1693                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1694         }
1695
1696         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1697         return status;
1698 }
1699
1700 static int be_setup(struct be_adapter *adapter)
1701 {
1702         struct net_device *netdev = adapter->netdev;
1703         u32 cap_flags, en_flags;
1704         int status;
1705
1706         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1707                         BE_IF_FLAGS_MCAST_PROMISCUOUS |
1708                         BE_IF_FLAGS_PROMISCUOUS |
1709                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1710         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1711                         BE_IF_FLAGS_PASS_L3L4_ERRORS;
1712
1713         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1714                         netdev->dev_addr, false/* pmac_invalid */,
1715                         &adapter->if_handle, &adapter->pmac_id);
1716         if (status != 0)
1717                 goto do_none;
1718
1719         status = be_tx_queues_create(adapter);
1720         if (status != 0)
1721                 goto if_destroy;
1722
1723         status = be_rx_queues_create(adapter);
1724         if (status != 0)
1725                 goto tx_qs_destroy;
1726
1727         status = be_mcc_queues_create(adapter);
1728         if (status != 0)
1729                 goto rx_qs_destroy;
1730
1731         adapter->link_speed = -1;
1732
1733         return 0;
1734
1735 rx_qs_destroy:
1736         be_rx_queues_destroy(adapter);
1737 tx_qs_destroy:
1738         be_tx_queues_destroy(adapter);
1739 if_destroy:
1740         be_cmd_if_destroy(adapter, adapter->if_handle);
1741 do_none:
1742         return status;
1743 }
1744
1745 static int be_clear(struct be_adapter *adapter)
1746 {
1747         be_mcc_queues_destroy(adapter);
1748         be_rx_queues_destroy(adapter);
1749         be_tx_queues_destroy(adapter);
1750
1751         be_cmd_if_destroy(adapter, adapter->if_handle);
1752
1753         /* tell fw we're done with firing cmds */
1754         be_cmd_fw_clean(adapter);
1755         return 0;
1756 }
1757
1758 static int be_close(struct net_device *netdev)
1759 {
1760         struct be_adapter *adapter = netdev_priv(netdev);
1761         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1762         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1763         int vec;
1764
1765         cancel_delayed_work_sync(&adapter->work);
1766
1767         netif_stop_queue(netdev);
1768         netif_carrier_off(netdev);
1769         adapter->link_up = false;
1770
1771         be_intr_set(adapter, false);
1772
1773         if (adapter->msix_enabled) {
1774                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1775                 synchronize_irq(vec);
1776                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1777                 synchronize_irq(vec);
1778         } else {
1779                 synchronize_irq(netdev->irq);
1780         }
1781         be_irq_unregister(adapter);
1782
1783         napi_disable(&rx_eq->napi);
1784         napi_disable(&tx_eq->napi);
1785
1786         /* Wait for all pending tx completions to arrive so that
1787          * all tx skbs are freed.
1788          */
1789         be_tx_compl_clean(adapter);
1790
1791         return 0;
1792 }
1793
1794 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1795 char flash_cookie[2][16] =      {"*** SE FLAS",
1796                                 "H DIRECTORY *** "};
1797
1798 static bool be_flash_redboot(struct be_adapter *adapter,
1799                         const u8 *p)
1800 {
1801         u32 crc_offset;
1802         u8 flashed_crc[4];
1803         int status;
1804         crc_offset = FLASH_REDBOOT_START + FLASH_REDBOOT_IMAGE_MAX_SIZE - 4
1805                         + sizeof(struct flash_file_hdr) - 32*1024;
1806         p += crc_offset;
1807         status = be_cmd_get_flash_crc(adapter, flashed_crc);
1808         if (status) {
1809                 dev_err(&adapter->pdev->dev,
1810                 "could not get crc from flash, not flashing redboot\n");
1811                 return false;
1812         }
1813
1814         /*update redboot only if crc does not match*/
1815         if (!memcmp(flashed_crc, p, 4))
1816                 return false;
1817         else
1818                 return true;
1819
1820 }
1821
1822 static int be_flash_image(struct be_adapter *adapter,
1823                         const struct firmware *fw,
1824                         struct be_dma_mem *flash_cmd, u32 flash_type)
1825 {
1826         int status;
1827         u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1828         int num_bytes;
1829         const u8 *p = fw->data;
1830         struct be_cmd_write_flashrom *req = flash_cmd->va;
1831
1832         switch (flash_type) {
1833         case FLASHROM_TYPE_ISCSI_ACTIVE:
1834                 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1835                 image_size = FLASH_IMAGE_MAX_SIZE;
1836                 break;
1837         case FLASHROM_TYPE_ISCSI_BACKUP:
1838                 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1839                 image_size = FLASH_IMAGE_MAX_SIZE;
1840                 break;
1841         case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1842                 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1843                 image_size = FLASH_IMAGE_MAX_SIZE;
1844                 break;
1845         case FLASHROM_TYPE_FCOE_FW_BACKUP:
1846                 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1847                 image_size = FLASH_IMAGE_MAX_SIZE;
1848                 break;
1849         case FLASHROM_TYPE_BIOS:
1850                 image_offset = FLASH_iSCSI_BIOS_START;
1851                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1852                 break;
1853         case FLASHROM_TYPE_FCOE_BIOS:
1854                 image_offset = FLASH_FCoE_BIOS_START;
1855                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1856                 break;
1857         case FLASHROM_TYPE_PXE_BIOS:
1858                 image_offset = FLASH_PXE_BIOS_START;
1859                 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1860                 break;
1861         case FLASHROM_TYPE_REDBOOT:
1862                 if (!be_flash_redboot(adapter, fw->data))
1863                         return 0;
1864                 image_offset = FLASH_REDBOOT_ISM_START;
1865                 image_size = FLASH_REDBOOT_IMAGE_MAX_SIZE;
1866                 break;
1867         default:
1868                 return 0;
1869         }
1870
1871         p += sizeof(struct flash_file_hdr) + image_offset;
1872         if (p + image_size > fw->data + fw->size)
1873                 return -1;
1874
1875         total_bytes = image_size;
1876
1877         while (total_bytes) {
1878                 if (total_bytes > 32*1024)
1879                         num_bytes = 32*1024;
1880                 else
1881                         num_bytes = total_bytes;
1882                 total_bytes -= num_bytes;
1883
1884                 if (!total_bytes)
1885                         flash_op = FLASHROM_OPER_FLASH;
1886                 else
1887                         flash_op = FLASHROM_OPER_SAVE;
1888                 memcpy(req->params.data_buf, p, num_bytes);
1889                 p += num_bytes;
1890                 status = be_cmd_write_flashrom(adapter, flash_cmd,
1891                                 flash_type, flash_op, num_bytes);
1892                 if (status) {
1893                         dev_err(&adapter->pdev->dev,
1894                         "cmd to write to flash rom failed. type/op %d/%d\n",
1895                         flash_type, flash_op);
1896                         return -1;
1897                 }
1898                 yield();
1899         }
1900
1901         return 0;
1902 }
1903
1904 int be_load_fw(struct be_adapter *adapter, u8 *func)
1905 {
1906         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1907         const struct firmware *fw;
1908         struct flash_file_hdr *fhdr;
1909         struct flash_section_info *fsec = NULL;
1910         struct be_dma_mem flash_cmd;
1911         int status;
1912         const u8 *p;
1913         bool entry_found = false;
1914         int flash_type;
1915         char fw_ver[FW_VER_LEN];
1916         char fw_cfg;
1917
1918         status = be_cmd_get_fw_ver(adapter, fw_ver);
1919         if (status)
1920                 return status;
1921
1922         fw_cfg = *(fw_ver + 2);
1923         if (fw_cfg == '0')
1924                 fw_cfg = '1';
1925         strcpy(fw_file, func);
1926
1927         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1928         if (status)
1929                 goto fw_exit;
1930
1931         p = fw->data;
1932         fhdr = (struct flash_file_hdr *) p;
1933         if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1934                 dev_err(&adapter->pdev->dev,
1935                         "Firmware(%s) load error (signature did not match)\n",
1936                                 fw_file);
1937                 status = -1;
1938                 goto fw_exit;
1939         }
1940
1941         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1942
1943         p += sizeof(struct flash_file_hdr);
1944         while (p < (fw->data + fw->size)) {
1945                 fsec = (struct flash_section_info *)p;
1946                 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1947                         entry_found = true;
1948                         break;
1949                 }
1950                 p += 32;
1951         }
1952
1953         if (!entry_found) {
1954                 status = -1;
1955                 dev_err(&adapter->pdev->dev,
1956                         "Flash cookie not found in firmware image\n");
1957                 goto fw_exit;
1958         }
1959
1960         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1961         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1962                                         &flash_cmd.dma);
1963         if (!flash_cmd.va) {
1964                 status = -ENOMEM;
1965                 dev_err(&adapter->pdev->dev,
1966                         "Memory allocation failure while flashing\n");
1967                 goto fw_exit;
1968         }
1969
1970         for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1971                 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1972                 status = be_flash_image(adapter, fw, &flash_cmd,
1973                                 flash_type);
1974                 if (status)
1975                         break;
1976         }
1977
1978         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1979                                 flash_cmd.dma);
1980         if (status) {
1981                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1982                 goto fw_exit;
1983         }
1984
1985         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
1986
1987 fw_exit:
1988         release_firmware(fw);
1989         return status;
1990 }
1991
1992 static struct net_device_ops be_netdev_ops = {
1993         .ndo_open               = be_open,
1994         .ndo_stop               = be_close,
1995         .ndo_start_xmit         = be_xmit,
1996         .ndo_get_stats          = be_get_stats,
1997         .ndo_set_rx_mode        = be_set_multicast_list,
1998         .ndo_set_mac_address    = be_mac_addr_set,
1999         .ndo_change_mtu         = be_change_mtu,
2000         .ndo_validate_addr      = eth_validate_addr,
2001         .ndo_vlan_rx_register   = be_vlan_register,
2002         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2003         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2004 };
2005
2006 static void be_netdev_init(struct net_device *netdev)
2007 {
2008         struct be_adapter *adapter = netdev_priv(netdev);
2009
2010         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2011                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2012                 NETIF_F_GRO;
2013
2014         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2015
2016         netdev->flags |= IFF_MULTICAST;
2017
2018         adapter->rx_csum = true;
2019
2020         /* Default settings for Rx and Tx flow control */
2021         adapter->rx_fc = true;
2022         adapter->tx_fc = true;
2023
2024         netif_set_gso_max_size(netdev, 65535);
2025
2026         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2027
2028         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2029
2030         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2031                 BE_NAPI_WEIGHT);
2032         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2033                 BE_NAPI_WEIGHT);
2034
2035         netif_carrier_off(netdev);
2036         netif_stop_queue(netdev);
2037 }
2038
2039 static void be_unmap_pci_bars(struct be_adapter *adapter)
2040 {
2041         if (adapter->csr)
2042                 iounmap(adapter->csr);
2043         if (adapter->db)
2044                 iounmap(adapter->db);
2045         if (adapter->pcicfg)
2046                 iounmap(adapter->pcicfg);
2047 }
2048
2049 static int be_map_pci_bars(struct be_adapter *adapter)
2050 {
2051         u8 __iomem *addr;
2052
2053         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2054                         pci_resource_len(adapter->pdev, 2));
2055         if (addr == NULL)
2056                 return -ENOMEM;
2057         adapter->csr = addr;
2058
2059         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2060                         128 * 1024);
2061         if (addr == NULL)
2062                 goto pci_map_err;
2063         adapter->db = addr;
2064
2065         addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
2066                         pci_resource_len(adapter->pdev, 1));
2067         if (addr == NULL)
2068                 goto pci_map_err;
2069         adapter->pcicfg = addr;
2070
2071         return 0;
2072 pci_map_err:
2073         be_unmap_pci_bars(adapter);
2074         return -ENOMEM;
2075 }
2076
2077
2078 static void be_ctrl_cleanup(struct be_adapter *adapter)
2079 {
2080         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2081
2082         be_unmap_pci_bars(adapter);
2083
2084         if (mem->va)
2085                 pci_free_consistent(adapter->pdev, mem->size,
2086                         mem->va, mem->dma);
2087
2088         mem = &adapter->mc_cmd_mem;
2089         if (mem->va)
2090                 pci_free_consistent(adapter->pdev, mem->size,
2091                         mem->va, mem->dma);
2092 }
2093
2094 static int be_ctrl_init(struct be_adapter *adapter)
2095 {
2096         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2097         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2098         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2099         int status;
2100
2101         status = be_map_pci_bars(adapter);
2102         if (status)
2103                 goto done;
2104
2105         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2106         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2107                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2108         if (!mbox_mem_alloc->va) {
2109                 status = -ENOMEM;
2110                 goto unmap_pci_bars;
2111         }
2112
2113         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2114         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2115         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2116         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2117
2118         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2119         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2120                         &mc_cmd_mem->dma);
2121         if (mc_cmd_mem->va == NULL) {
2122                 status = -ENOMEM;
2123                 goto free_mbox;
2124         }
2125         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2126
2127         spin_lock_init(&adapter->mbox_lock);
2128         spin_lock_init(&adapter->mcc_lock);
2129         spin_lock_init(&adapter->mcc_cq_lock);
2130
2131         return 0;
2132
2133 free_mbox:
2134         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2135                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2136
2137 unmap_pci_bars:
2138         be_unmap_pci_bars(adapter);
2139
2140 done:
2141         return status;
2142 }
2143
2144 static void be_stats_cleanup(struct be_adapter *adapter)
2145 {
2146         struct be_stats_obj *stats = &adapter->stats;
2147         struct be_dma_mem *cmd = &stats->cmd;
2148
2149         if (cmd->va)
2150                 pci_free_consistent(adapter->pdev, cmd->size,
2151                         cmd->va, cmd->dma);
2152 }
2153
2154 static int be_stats_init(struct be_adapter *adapter)
2155 {
2156         struct be_stats_obj *stats = &adapter->stats;
2157         struct be_dma_mem *cmd = &stats->cmd;
2158
2159         cmd->size = sizeof(struct be_cmd_req_get_stats);
2160         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2161         if (cmd->va == NULL)
2162                 return -1;
2163         return 0;
2164 }
2165
2166 static void __devexit be_remove(struct pci_dev *pdev)
2167 {
2168         struct be_adapter *adapter = pci_get_drvdata(pdev);
2169
2170         if (!adapter)
2171                 return;
2172
2173         unregister_netdev(adapter->netdev);
2174
2175         be_clear(adapter);
2176
2177         be_stats_cleanup(adapter);
2178
2179         be_ctrl_cleanup(adapter);
2180
2181         be_msix_disable(adapter);
2182
2183         pci_set_drvdata(pdev, NULL);
2184         pci_release_regions(pdev);
2185         pci_disable_device(pdev);
2186
2187         free_netdev(adapter->netdev);
2188 }
2189
2190 static int be_get_config(struct be_adapter *adapter)
2191 {
2192         int status;
2193         u8 mac[ETH_ALEN];
2194
2195         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2196         if (status)
2197                 return status;
2198
2199         status = be_cmd_query_fw_cfg(adapter,
2200                                 &adapter->port_num, &adapter->cap);
2201         if (status)
2202                 return status;
2203
2204         memset(mac, 0, ETH_ALEN);
2205         status = be_cmd_mac_addr_query(adapter, mac,
2206                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2207         if (status)
2208                 return status;
2209
2210         if (!is_valid_ether_addr(mac))
2211                 return -EADDRNOTAVAIL;
2212
2213         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2214         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2215
2216         return 0;
2217 }
2218
2219 static int __devinit be_probe(struct pci_dev *pdev,
2220                         const struct pci_device_id *pdev_id)
2221 {
2222         int status = 0;
2223         struct be_adapter *adapter;
2224         struct net_device *netdev;
2225
2226         status = pci_enable_device(pdev);
2227         if (status)
2228                 goto do_none;
2229
2230         status = pci_request_regions(pdev, DRV_NAME);
2231         if (status)
2232                 goto disable_dev;
2233         pci_set_master(pdev);
2234
2235         netdev = alloc_etherdev(sizeof(struct be_adapter));
2236         if (netdev == NULL) {
2237                 status = -ENOMEM;
2238                 goto rel_reg;
2239         }
2240         adapter = netdev_priv(netdev);
2241         adapter->pdev = pdev;
2242         pci_set_drvdata(pdev, adapter);
2243         adapter->netdev = netdev;
2244         be_netdev_init(netdev);
2245         SET_NETDEV_DEV(netdev, &pdev->dev);
2246
2247         be_msix_enable(adapter);
2248
2249         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2250         if (!status) {
2251                 netdev->features |= NETIF_F_HIGHDMA;
2252         } else {
2253                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2254                 if (status) {
2255                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2256                         goto free_netdev;
2257                 }
2258         }
2259
2260         status = be_ctrl_init(adapter);
2261         if (status)
2262                 goto free_netdev;
2263
2264         /* sync up with fw's ready state */
2265         status = be_cmd_POST(adapter);
2266         if (status)
2267                 goto ctrl_clean;
2268
2269         /* tell fw we're ready to fire cmds */
2270         status = be_cmd_fw_init(adapter);
2271         if (status)
2272                 goto ctrl_clean;
2273
2274         status = be_cmd_reset_function(adapter);
2275         if (status)
2276                 goto ctrl_clean;
2277
2278         status = be_stats_init(adapter);
2279         if (status)
2280                 goto ctrl_clean;
2281
2282         status = be_get_config(adapter);
2283         if (status)
2284                 goto stats_clean;
2285
2286         INIT_DELAYED_WORK(&adapter->work, be_worker);
2287
2288         status = be_setup(adapter);
2289         if (status)
2290                 goto stats_clean;
2291
2292         status = register_netdev(netdev);
2293         if (status != 0)
2294                 goto unsetup;
2295
2296         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2297         return 0;
2298
2299 unsetup:
2300         be_clear(adapter);
2301 stats_clean:
2302         be_stats_cleanup(adapter);
2303 ctrl_clean:
2304         be_ctrl_cleanup(adapter);
2305 free_netdev:
2306         be_msix_disable(adapter);
2307         free_netdev(adapter->netdev);
2308         pci_set_drvdata(pdev, NULL);
2309 rel_reg:
2310         pci_release_regions(pdev);
2311 disable_dev:
2312         pci_disable_device(pdev);
2313 do_none:
2314         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2315         return status;
2316 }
2317
2318 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2319 {
2320         struct be_adapter *adapter = pci_get_drvdata(pdev);
2321         struct net_device *netdev =  adapter->netdev;
2322
2323         if (adapter->wol)
2324                 be_setup_wol(adapter, true);
2325
2326         netif_device_detach(netdev);
2327         if (netif_running(netdev)) {
2328                 rtnl_lock();
2329                 be_close(netdev);
2330                 rtnl_unlock();
2331         }
2332         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2333         be_clear(adapter);
2334
2335         pci_save_state(pdev);
2336         pci_disable_device(pdev);
2337         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2338         return 0;
2339 }
2340
2341 static int be_resume(struct pci_dev *pdev)
2342 {
2343         int status = 0;
2344         struct be_adapter *adapter = pci_get_drvdata(pdev);
2345         struct net_device *netdev =  adapter->netdev;
2346
2347         netif_device_detach(netdev);
2348
2349         status = pci_enable_device(pdev);
2350         if (status)
2351                 return status;
2352
2353         pci_set_power_state(pdev, 0);
2354         pci_restore_state(pdev);
2355
2356         /* tell fw we're ready to fire cmds */
2357         status = be_cmd_fw_init(adapter);
2358         if (status)
2359                 return status;
2360
2361         be_setup(adapter);
2362         if (netif_running(netdev)) {
2363                 rtnl_lock();
2364                 be_open(netdev);
2365                 rtnl_unlock();
2366         }
2367         netif_device_attach(netdev);
2368
2369         if (adapter->wol)
2370                 be_setup_wol(adapter, false);
2371         return 0;
2372 }
2373
2374 static struct pci_driver be_driver = {
2375         .name = DRV_NAME,
2376         .id_table = be_dev_ids,
2377         .probe = be_probe,
2378         .remove = be_remove,
2379         .suspend = be_suspend,
2380         .resume = be_resume
2381 };
2382
2383 static int __init be_init_module(void)
2384 {
2385         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2386             rx_frag_size != 2048) {
2387                 printk(KERN_WARNING DRV_NAME
2388                         " : Module param rx_frag_size must be 2048/4096/8192."
2389                         " Using 2048\n");
2390                 rx_frag_size = 2048;
2391         }
2392
2393         return pci_register_driver(&be_driver);
2394 }
2395 module_init(be_init_module);
2396
2397 static void __exit be_exit_module(void)
2398 {
2399         pci_unregister_driver(&be_driver);
2400 }
2401 module_exit(be_exit_module);