drivers/net/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2010 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include "be_cmds.h"
  20 #include <asm/div64.h>
  21
  22 MODULE_VERSION(DRV_VER);
  23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  25 MODULE_AUTHOR("ServerEngines Corporation");
  26 MODULE_LICENSE("GPL");
  27
  28 static unsigned int rx_frag_size = 2048;
  29 static unsigned int num_vfs;
  30 module_param(rx_frag_size, uint, S_IRUGO);
  31 module_param(num_vfs, uint, S_IRUGO);
  32 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  33 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
  34
  35 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  36         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  37         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
  38         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  39         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  40         { 0 }
  41 };
  42 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  43
  44 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
  45 {
  46         struct be_dma_mem *mem = &q->dma_mem;
  47         if (mem->va)
  48                 pci_free_consistent(adapter->pdev, mem->size,
  49                         mem->va, mem->dma);
  50 }
  51
  52 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
  53                 u16 len, u16 entry_size)
  54 {
  55         struct be_dma_mem *mem = &q->dma_mem;
  56
  57         memset(q, 0, sizeof(*q));
  58         q->len = len;
  59         q->entry_size = entry_size;
  60         mem->size = len * entry_size;
  61         mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
  62         if (!mem->va)
  63                 return -1;
  64         memset(mem->va, 0, mem->size);
  65         return 0;
  66 }
  67
  68 static void be_intr_set(struct be_adapter *adapter, bool enable)
  69 {
  70         u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
  71         u32 reg = ioread32(addr);
  72         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  73
  74         if (adapter->eeh_err)
  75                 return;
  76
  77         if (!enabled && enable)
  78                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  79         else if (enabled && !enable)
  80                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
  81         else
  82                 return;
  83
  84         iowrite32(reg, addr);
  85 }
  86
  87 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  88 {
  89         u32 val = 0;
  90         val |= qid & DB_RQ_RING_ID_MASK;
  91         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
  92
  93         wmb();
  94         iowrite32(val, adapter->db + DB_RQ_OFFSET);
  95 }
  96
  97 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
  98 {
  99         u32 val = 0;
 100         val |= qid & DB_TXULP_RING_ID_MASK;
 101         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 102
 103         wmb();
 104         iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
 105 }
 106
 107 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
 108                 bool arm, bool clear_int, u16 num_popped)
 109 {
 110         u32 val = 0;
 111         val |= qid & DB_EQ_RING_ID_MASK;
 112
 113         if (adapter->eeh_err)
 114                 return;
 115
 116         if (arm)
 117                 val |= 1 << DB_EQ_REARM_SHIFT;
 118         if (clear_int)
 119                 val |= 1 << DB_EQ_CLR_SHIFT;
 120         val |= 1 << DB_EQ_EVNT_SHIFT;
 121         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 122         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 123 }
 124
 125 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 126 {
 127         u32 val = 0;
 128         val |= qid & DB_CQ_RING_ID_MASK;
 129
 130         if (adapter->eeh_err)
 131                 return;
 132
 133         if (arm)
 134                 val |= 1 << DB_CQ_REARM_SHIFT;
 135         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 136         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 137 }
 138
 139 static int be_mac_addr_set(struct net_device *netdev, void *p)
 140 {
 141         struct be_adapter *adapter = netdev_priv(netdev);
 142         struct sockaddr *addr = p;
 143         int status = 0;
 144
 145         if (!is_valid_ether_addr(addr->sa_data))
 146                 return -EADDRNOTAVAIL;
 147
 148         /* MAC addr configuration will be done in hardware for VFs
 149          * by their corresponding PFs. Just copy to netdev addr here
 150          */
 151         if (!be_physfn(adapter))
 152                 goto netdev_addr;
 153
 154         status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
 155         if (status)
 156                 return status;
 157
 158         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 159                         adapter->if_handle, &adapter->pmac_id);
 160 netdev_addr:
 161         if (!status)
 162                 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 163
 164         return status;
 165 }
 166
 167 void netdev_stats_update(struct be_adapter *adapter)
 168 {
 169         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 170         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 171         struct be_port_rxf_stats *port_stats =
 172                         &rxf_stats->port[adapter->port_num];
 173         struct net_device_stats *dev_stats = &adapter->netdev->stats;
 174         struct be_erx_stats *erx_stats = &hw_stats->erx;
 175
 176         dev_stats->rx_packets = drvr_stats(adapter)->be_rx_pkts;
 177         dev_stats->tx_packets = drvr_stats(adapter)->be_tx_pkts;
 178         dev_stats->rx_bytes = drvr_stats(adapter)->be_rx_bytes;
 179         dev_stats->tx_bytes = drvr_stats(adapter)->be_tx_bytes;
 180
 181         /* bad pkts received */
 182         dev_stats->rx_errors = port_stats->rx_crc_errors +
 183                 port_stats->rx_alignment_symbol_errors +
 184                 port_stats->rx_in_range_errors +
 185                 port_stats->rx_out_range_errors +
 186                 port_stats->rx_frame_too_long +
 187                 port_stats->rx_dropped_too_small +
 188                 port_stats->rx_dropped_too_short +
 189                 port_stats->rx_dropped_header_too_small +
 190                 port_stats->rx_dropped_tcp_length +
 191                 port_stats->rx_dropped_runt +
 192                 port_stats->rx_tcp_checksum_errs +
 193                 port_stats->rx_ip_checksum_errs +
 194                 port_stats->rx_udp_checksum_errs;
 195
 196         /*  no space in linux buffers: best possible approximation */
 197         dev_stats->rx_dropped =
 198                 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
 199
 200         /* detailed rx errors */
 201         dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
 202                 port_stats->rx_out_range_errors +
 203                 port_stats->rx_frame_too_long;
 204
 205         /* receive ring buffer overflow */
 206         dev_stats->rx_over_errors = 0;
 207
 208         dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
 209
 210         /* frame alignment errors */
 211         dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
 212
 213         /* receiver fifo overrun */
 214         /* drops_no_pbuf is no per i/f, it's per BE card */
 215         dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
 216                                         port_stats->rx_input_fifo_overflow +
 217                                         rxf_stats->rx_drops_no_pbuf;
 218         /* receiver missed packetd */
 219         dev_stats->rx_missed_errors = 0;
 220
 221         /*  packet transmit problems */
 222         dev_stats->tx_errors = 0;
 223
 224         /* no space available in linux */
 225         dev_stats->tx_dropped = 0;
 226
 227         dev_stats->multicast = port_stats->rx_multicast_frames;
 228         dev_stats->collisions = 0;
 229
 230         /* detailed tx_errors */
 231         dev_stats->tx_aborted_errors = 0;
 232         dev_stats->tx_carrier_errors = 0;
 233         dev_stats->tx_fifo_errors = 0;
 234         dev_stats->tx_heartbeat_errors = 0;
 235         dev_stats->tx_window_errors = 0;
 236 }
 237
 238 void be_link_status_update(struct be_adapter *adapter, bool link_up)
 239 {
 240         struct net_device *netdev = adapter->netdev;
 241
 242         /* If link came up or went down */
 243         if (adapter->link_up != link_up) {
 244                 adapter->link_speed = -1;
 245                 if (link_up) {
 246                         netif_start_queue(netdev);
 247                         netif_carrier_on(netdev);
 248                         printk(KERN_INFO "%s: Link up\n", netdev->name);
 249                 } else {
 250                         netif_stop_queue(netdev);
 251                         netif_carrier_off(netdev);
 252                         printk(KERN_INFO "%s: Link down\n", netdev->name);
 253                 }
 254                 adapter->link_up = link_up;
 255         }
 256 }
 257
 258 /* Update the EQ delay n BE based on the RX frags consumed / sec */
 259 static void be_rx_eqd_update(struct be_adapter *adapter)
 260 {
 261         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 262         struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
 263         ulong now = jiffies;
 264         u32 eqd;
 265
 266         if (!rx_eq->enable_aic)
 267                 return;
 268
 269         /* Wrapped around */
 270         if (time_before(now, stats->rx_fps_jiffies)) {
 271                 stats->rx_fps_jiffies = now;
 272                 return;
 273         }
 274
 275         /* Update once a second */
 276         if ((now - stats->rx_fps_jiffies) < HZ)
 277                 return;
 278
 279         stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
 280                         ((now - stats->rx_fps_jiffies) / HZ);
 281
 282         stats->rx_fps_jiffies = now;
 283         stats->be_prev_rx_frags = stats->be_rx_frags;
 284         eqd = stats->be_rx_fps / 110000;
 285         eqd = eqd << 3;
 286         if (eqd > rx_eq->max_eqd)
 287                 eqd = rx_eq->max_eqd;
 288         if (eqd < rx_eq->min_eqd)
 289                 eqd = rx_eq->min_eqd;
 290         if (eqd < 10)
 291                 eqd = 0;
 292         if (eqd != rx_eq->cur_eqd)
 293                 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
 294
 295         rx_eq->cur_eqd = eqd;
 296 }
 297
 298 static struct net_device_stats *be_get_stats(struct net_device *dev)
 299 {
 300         return &dev->stats;
 301 }
 302
 303 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
 304 {
 305         u64 rate = bytes;
 306
 307         do_div(rate, ticks / HZ);
 308         rate <<= 3;                     /* bytes/sec -> bits/sec */
 309         do_div(rate, 1000000ul);        /* MB/Sec */
 310
 311         return rate;
 312 }
 313
 314 static void be_tx_rate_update(struct be_adapter *adapter)
 315 {
 316         struct be_drvr_stats *stats = drvr_stats(adapter);
 317         ulong now = jiffies;
 318
 319         /* Wrapped around? */
 320         if (time_before(now, stats->be_tx_jiffies)) {
 321                 stats->be_tx_jiffies = now;
 322                 return;
 323         }
 324
 325         /* Update tx rate once in two seconds */
 326         if ((now - stats->be_tx_jiffies) > 2 * HZ) {
 327                 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
 328                                                   - stats->be_tx_bytes_prev,
 329                                                  now - stats->be_tx_jiffies);
 330                 stats->be_tx_jiffies = now;
 331                 stats->be_tx_bytes_prev = stats->be_tx_bytes;
 332         }
 333 }
 334
 335 static void be_tx_stats_update(struct be_adapter *adapter,
 336                         u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
 337 {
 338         struct be_drvr_stats *stats = drvr_stats(adapter);
 339         stats->be_tx_reqs++;
 340         stats->be_tx_wrbs += wrb_cnt;
 341         stats->be_tx_bytes += copied;
 342         stats->be_tx_pkts += (gso_segs ? gso_segs : 1);
 343         if (stopped)
 344                 stats->be_tx_stops++;
 345 }
 346
 347 /* Determine number of WRB entries needed to xmit data in an skb */
 348 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
 349 {
 350         int cnt = (skb->len > skb->data_len);
 351
 352         cnt += skb_shinfo(skb)->nr_frags;
 353
 354         /* to account for hdr wrb */
 355         cnt++;
 356         if (cnt & 1) {
 357                 /* add a dummy to make it an even num */
 358                 cnt++;
 359                 *dummy = true;
 360         } else
 361                 *dummy = false;
 362         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 363         return cnt;
 364 }
 365
 366 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 367 {
 368         wrb->frag_pa_hi = upper_32_bits(addr);
 369         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 370         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 371 }
 372
 373 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
 374                 bool vlan, u32 wrb_cnt, u32 len)
 375 {
 376         memset(hdr, 0, sizeof(*hdr));
 377
 378         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 379
 380         if (skb_is_gso(skb)) {
 381                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 382                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 383                         hdr, skb_shinfo(skb)->gso_size);
 384                 if (skb_is_gso_v6(skb))
 385                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso6, hdr, 1);
 386         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 387                 if (is_tcp_pkt(skb))
 388                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 389                 else if (is_udp_pkt(skb))
 390                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 391         }
 392
 393         if (vlan && vlan_tx_tag_present(skb)) {
 394                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 395                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
 396                         hdr, vlan_tx_tag_get(skb));
 397         }
 398
 399         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 400         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
 401         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 402         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 403 }
 404
 405 static void unmap_tx_frag(struct pci_dev *pdev, struct be_eth_wrb *wrb,
 406                 bool unmap_single)
 407 {
 408         dma_addr_t dma;
 409
 410         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 411
 412         dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
 413         if (wrb->frag_len) {
 414                 if (unmap_single)
 415                         pci_unmap_single(pdev, dma, wrb->frag_len,
 416                                 PCI_DMA_TODEVICE);
 417                 else
 418                         pci_unmap_page(pdev, dma, wrb->frag_len,
 419                                 PCI_DMA_TODEVICE);
 420         }
 421 }
 422
 423 static int make_tx_wrbs(struct be_adapter *adapter,
 424                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
 425 {
 426         dma_addr_t busaddr;
 427         int i, copied = 0;
 428         struct pci_dev *pdev = adapter->pdev;
 429         struct sk_buff *first_skb = skb;
 430         struct be_queue_info *txq = &adapter->tx_obj.q;
 431         struct be_eth_wrb *wrb;
 432         struct be_eth_hdr_wrb *hdr;
 433         bool map_single = false;
 434         u16 map_head;
 435
 436         hdr = queue_head_node(txq);
 437         queue_head_inc(txq);
 438         map_head = txq->head;
 439
 440         if (skb->len > skb->data_len) {
 441                 int len = skb_headlen(skb);
 442                 busaddr = pci_map_single(pdev, skb->data, len,
 443                                          PCI_DMA_TODEVICE);
 444                 if (pci_dma_mapping_error(pdev, busaddr))
 445                         goto dma_err;
 446                 map_single = true;
 447                 wrb = queue_head_node(txq);
 448                 wrb_fill(wrb, busaddr, len);
 449                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 450                 queue_head_inc(txq);
 451                 copied += len;
 452         }
 453
 454         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 455                 struct skb_frag_struct *frag =
 456                         &skb_shinfo(skb)->frags[i];
 457                 busaddr = pci_map_page(pdev, frag->page,
 458                                        frag->page_offset,
 459                                        frag->size, PCI_DMA_TODEVICE);
 460                 if (pci_dma_mapping_error(pdev, busaddr))
 461                         goto dma_err;
 462                 wrb = queue_head_node(txq);
 463                 wrb_fill(wrb, busaddr, frag->size);
 464                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 465                 queue_head_inc(txq);
 466                 copied += frag->size;
 467         }
 468
 469         if (dummy_wrb) {
 470                 wrb = queue_head_node(txq);
 471                 wrb_fill(wrb, 0, 0);
 472                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 473                 queue_head_inc(txq);
 474         }
 475
 476         wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
 477                 wrb_cnt, copied);
 478         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 479
 480         return copied;
 481 dma_err:
 482         txq->head = map_head;
 483         while (copied) {
 484                 wrb = queue_head_node(txq);
 485                 unmap_tx_frag(pdev, wrb, map_single);
 486                 map_single = false;
 487                 copied -= wrb->frag_len;
 488                 queue_head_inc(txq);
 489         }
 490         return 0;
 491 }
 492
 493 static netdev_tx_t be_xmit(struct sk_buff *skb,
 494                         struct net_device *netdev)
 495 {
 496         struct be_adapter *adapter = netdev_priv(netdev);
 497         struct be_tx_obj *tx_obj = &adapter->tx_obj;
 498         struct be_queue_info *txq = &tx_obj->q;
 499         u32 wrb_cnt = 0, copied = 0;
 500         u32 start = txq->head;
 501         bool dummy_wrb, stopped = false;
 502
 503         wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
 504
 505         copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
 506         if (copied) {
 507                 /* record the sent skb in the sent_skb table */
 508                 BUG_ON(tx_obj->sent_skb_list[start]);
 509                 tx_obj->sent_skb_list[start] = skb;
 510
 511                 /* Ensure txq has space for the next skb; Else stop the queue
 512                  * *BEFORE* ringing the tx doorbell, so that we serialze the
 513                  * tx compls of the current transmit which'll wake up the queue
 514                  */
 515                 atomic_add(wrb_cnt, &txq->used);
 516                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
 517                                                                 txq->len) {
 518                         netif_stop_queue(netdev);
 519                         stopped = true;
 520                 }
 521
 522                 be_txq_notify(adapter, txq->id, wrb_cnt);
 523
 524                 be_tx_stats_update(adapter, wrb_cnt, copied,
 525                                 skb_shinfo(skb)->gso_segs, stopped);
 526         } else {
 527                 txq->head = start;
 528                 dev_kfree_skb_any(skb);
 529         }
 530         return NETDEV_TX_OK;
 531 }
 532
 533 static int be_change_mtu(struct net_device *netdev, int new_mtu)
 534 {
 535         struct be_adapter *adapter = netdev_priv(netdev);
 536         if (new_mtu < BE_MIN_MTU ||
 537                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
 538                                         (ETH_HLEN + ETH_FCS_LEN))) {
 539                 dev_info(&adapter->pdev->dev,
 540                         "MTU must be between %d and %d bytes\n",
 541                         BE_MIN_MTU,
 542                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
 543                 return -EINVAL;
 544         }
 545         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
 546                         netdev->mtu, new_mtu);
 547         netdev->mtu = new_mtu;
 548         return 0;
 549 }
 550
 551 /*
 552  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
 553  * If the user configures more, place BE in vlan promiscuous mode.
 554  */
 555 static int be_vid_config(struct be_adapter *adapter)
 556 {
 557         u16 vtag[BE_NUM_VLANS_SUPPORTED];
 558         u16 ntags = 0, i;
 559         int status = 0;
 560
 561         if (adapter->vlans_added <= adapter->max_vlans)  {
 562                 /* Construct VLAN Table to give to HW */
 563                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 564                         if (adapter->vlan_tag[i]) {
 565                                 vtag[ntags] = cpu_to_le16(i);
 566                                 ntags++;
 567                         }
 568                 }
 569                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 570                                         vtag, ntags, 1, 0);
 571         } else {
 572                 status = be_cmd_vlan_config(adapter, adapter->if_handle,
 573                                         NULL, 0, 1, 1);
 574         }
 575         return status;
 576 }
 577
 578 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
 579 {
 580         struct be_adapter *adapter = netdev_priv(netdev);
 581         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 582         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 583
 584         be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
 585         be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
 586         adapter->vlan_grp = grp;
 587         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
 588         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
 589 }
 590
 591 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
 592 {
 593         struct be_adapter *adapter = netdev_priv(netdev);
 594
 595         if (!be_physfn(adapter))
 596                 return;
 597
 598         adapter->vlan_tag[vid] = 1;
 599         adapter->vlans_added++;
 600         if (adapter->vlans_added <= (adapter->max_vlans + 1))
 601                 be_vid_config(adapter);
 602 }
 603
 604 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
 605 {
 606         struct be_adapter *adapter = netdev_priv(netdev);
 607
 608         if (!be_physfn(adapter))
 609                 return;
 610
 611         adapter->vlan_tag[vid] = 0;
 612         vlan_group_set_device(adapter->vlan_grp, vid, NULL);
 613         adapter->vlans_added--;
 614         if (adapter->vlans_added <= adapter->max_vlans)
 615                 be_vid_config(adapter);
 616 }
 617
 618 static void be_set_multicast_list(struct net_device *netdev)
 619 {
 620         struct be_adapter *adapter = netdev_priv(netdev);
 621
 622         if (netdev->flags & IFF_PROMISC) {
 623                 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
 624                 adapter->promiscuous = true;
 625                 goto done;
 626         }
 627
 628         /* BE was previously in promiscous mode; disable it */
 629         if (adapter->promiscuous) {
 630                 adapter->promiscuous = false;
 631                 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
 632         }
 633
 634         /* Enable multicast promisc if num configured exceeds what we support */
 635         if (netdev->flags & IFF_ALLMULTI ||
 636             netdev_mc_count(netdev) > BE_MAX_MC) {
 637                 be_cmd_multicast_set(adapter, adapter->if_handle, NULL,
 638                                 &adapter->mc_cmd_mem);
 639                 goto done;
 640         }
 641
 642         be_cmd_multicast_set(adapter, adapter->if_handle, netdev,
 643                 &adapter->mc_cmd_mem);
 644 done:
 645         return;
 646 }
 647
 648 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
 649 {
 650         struct be_adapter *adapter = netdev_priv(netdev);
 651         int status;
 652
 653         if (!adapter->sriov_enabled)
 654                 return -EPERM;
 655
 656         if (!is_valid_ether_addr(mac) || (vf >= num_vfs))
 657                 return -EINVAL;
 658
 659         status = be_cmd_pmac_del(adapter, adapter->vf_if_handle[vf],
 660                                 adapter->vf_pmac_id[vf]);
 661
 662         status = be_cmd_pmac_add(adapter, mac, adapter->vf_if_handle[vf],
 663                                 &adapter->vf_pmac_id[vf]);
 664         if (!status)
 665                 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed\n",
 666                                 mac, vf);
 667         return status;
 668 }
 669
 670 static void be_rx_rate_update(struct be_adapter *adapter)
 671 {
 672         struct be_drvr_stats *stats = drvr_stats(adapter);
 673         ulong now = jiffies;
 674
 675         /* Wrapped around */
 676         if (time_before(now, stats->be_rx_jiffies)) {
 677                 stats->be_rx_jiffies = now;
 678                 return;
 679         }
 680
 681         /* Update the rate once in two seconds */
 682         if ((now - stats->be_rx_jiffies) < 2 * HZ)
 683                 return;
 684
 685         stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
 686                                           - stats->be_rx_bytes_prev,
 687                                          now - stats->be_rx_jiffies);
 688         stats->be_rx_jiffies = now;
 689         stats->be_rx_bytes_prev = stats->be_rx_bytes;
 690 }
 691
 692 static void be_rx_stats_update(struct be_adapter *adapter,
 693                 u32 pktsize, u16 numfrags)
 694 {
 695         struct be_drvr_stats *stats = drvr_stats(adapter);
 696
 697         stats->be_rx_compl++;
 698         stats->be_rx_frags += numfrags;
 699         stats->be_rx_bytes += pktsize;
 700         stats->be_rx_pkts++;
 701 }
 702
 703 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
 704 {
 705         u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
 706
 707         l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
 708         ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
 709         ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
 710         if (ip_version) {
 711                 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
 712                 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
 713         }
 714         ipv6_chk = (ip_version && (tcpf || udpf));
 715
 716         return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
 717 }
 718
 719 static struct be_rx_page_info *
 720 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
 721 {
 722         struct be_rx_page_info *rx_page_info;
 723         struct be_queue_info *rxq = &adapter->rx_obj.q;
 724
 725         rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
 726         BUG_ON(!rx_page_info->page);
 727
 728         if (rx_page_info->last_page_user) {
 729                 pci_unmap_page(adapter->pdev, dma_unmap_addr(rx_page_info, bus),
 730                         adapter->big_page_size, PCI_DMA_FROMDEVICE);
 731                 rx_page_info->last_page_user = false;
 732         }
 733
 734         atomic_dec(&rxq->used);
 735         return rx_page_info;
 736 }
 737
 738 /* Throwaway the data in the Rx completion */
 739 static void be_rx_compl_discard(struct be_adapter *adapter,
 740                         struct be_eth_rx_compl *rxcp)
 741 {
 742         struct be_queue_info *rxq = &adapter->rx_obj.q;
 743         struct be_rx_page_info *page_info;
 744         u16 rxq_idx, i, num_rcvd;
 745
 746         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 747         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 748
 749         for (i = 0; i < num_rcvd; i++) {
 750                 page_info = get_rx_page_info(adapter, rxq_idx);
 751                 put_page(page_info->page);
 752                 memset(page_info, 0, sizeof(*page_info));
 753                 index_inc(&rxq_idx, rxq->len);
 754         }
 755 }
 756
 757 /*
 758  * skb_fill_rx_data forms a complete skb for an ether frame
 759  * indicated by rxcp.
 760  */
 761 static void skb_fill_rx_data(struct be_adapter *adapter,
 762                         struct sk_buff *skb, struct be_eth_rx_compl *rxcp,
 763                         u16 num_rcvd)
 764 {
 765         struct be_queue_info *rxq = &adapter->rx_obj.q;
 766         struct be_rx_page_info *page_info;
 767         u16 rxq_idx, i, j;
 768         u32 pktsize, hdr_len, curr_frag_len, size;
 769         u8 *start;
 770
 771         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 772         pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 773
 774         page_info = get_rx_page_info(adapter, rxq_idx);
 775
 776         start = page_address(page_info->page) + page_info->page_offset;
 777         prefetch(start);
 778
 779         /* Copy data in the first descriptor of this completion */
 780         curr_frag_len = min(pktsize, rx_frag_size);
 781
 782         /* Copy the header portion into skb_data */
 783         hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
 784         memcpy(skb->data, start, hdr_len);
 785         skb->len = curr_frag_len;
 786         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
 787                 /* Complete packet has now been moved to data */
 788                 put_page(page_info->page);
 789                 skb->data_len = 0;
 790                 skb->tail += curr_frag_len;
 791         } else {
 792                 skb_shinfo(skb)->nr_frags = 1;
 793                 skb_shinfo(skb)->frags[0].page = page_info->page;
 794                 skb_shinfo(skb)->frags[0].page_offset =
 795                                         page_info->page_offset + hdr_len;
 796                 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
 797                 skb->data_len = curr_frag_len - hdr_len;
 798                 skb->tail += hdr_len;
 799         }
 800         page_info->page = NULL;
 801
 802         if (pktsize <= rx_frag_size) {
 803                 BUG_ON(num_rcvd != 1);
 804                 goto done;
 805         }
 806
 807         /* More frags present for this completion */
 808         size = pktsize;
 809         for (i = 1, j = 0; i < num_rcvd; i++) {
 810                 size -= curr_frag_len;
 811                 index_inc(&rxq_idx, rxq->len);
 812                 page_info = get_rx_page_info(adapter, rxq_idx);
 813
 814                 curr_frag_len = min(size, rx_frag_size);
 815
 816                 /* Coalesce all frags from the same physical page in one slot */
 817                 if (page_info->page_offset == 0) {
 818                         /* Fresh page */
 819                         j++;
 820                         skb_shinfo(skb)->frags[j].page = page_info->page;
 821                         skb_shinfo(skb)->frags[j].page_offset =
 822                                                         page_info->page_offset;
 823                         skb_shinfo(skb)->frags[j].size = 0;
 824                         skb_shinfo(skb)->nr_frags++;
 825                 } else {
 826                         put_page(page_info->page);
 827                 }
 828
 829                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 830                 skb->len += curr_frag_len;
 831                 skb->data_len += curr_frag_len;
 832
 833                 page_info->page = NULL;
 834         }
 835         BUG_ON(j > MAX_SKB_FRAGS);
 836
 837 done:
 838         be_rx_stats_update(adapter, pktsize, num_rcvd);
 839 }
 840
 841 /* Process the RX completion indicated by rxcp when GRO is disabled */
 842 static void be_rx_compl_process(struct be_adapter *adapter,
 843                         struct be_eth_rx_compl *rxcp)
 844 {
 845         struct sk_buff *skb;
 846         u32 vlanf, vid;
 847         u16 num_rcvd;
 848         u8 vtm;
 849
 850         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 851         /* Is it a flush compl that has no data */
 852         if (unlikely(num_rcvd == 0))
 853                 return;
 854
 855         skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
 856         if (unlikely(!skb)) {
 857                 if (net_ratelimit())
 858                         dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
 859                 be_rx_compl_discard(adapter, rxcp);
 860                 return;
 861         }
 862
 863         skb_fill_rx_data(adapter, skb, rxcp, num_rcvd);
 864
 865         if (do_pkt_csum(rxcp, adapter->rx_csum))
 866                 skb->ip_summed = CHECKSUM_NONE;
 867         else
 868                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 869
 870         skb->truesize = skb->len + sizeof(struct sk_buff);
 871         skb->protocol = eth_type_trans(skb, adapter->netdev);
 872
 873         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 874         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 875
 876         /* vlanf could be wrongly set in some cards.
 877          * ignore if vtm is not set */
 878         if ((adapter->cap & 0x400) && !vtm)
 879                 vlanf = 0;
 880
 881         if (unlikely(vlanf)) {
 882                 if (!adapter->vlan_grp || adapter->vlans_added == 0) {
 883                         kfree_skb(skb);
 884                         return;
 885                 }
 886                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 887                 vid = swab16(vid);
 888                 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
 889         } else {
 890                 netif_receive_skb(skb);
 891         }
 892 }
 893
 894 /* Process the RX completion indicated by rxcp when GRO is enabled */
 895 static void be_rx_compl_process_gro(struct be_adapter *adapter,
 896                         struct be_eth_rx_compl *rxcp)
 897 {
 898         struct be_rx_page_info *page_info;
 899         struct sk_buff *skb = NULL;
 900         struct be_queue_info *rxq = &adapter->rx_obj.q;
 901         struct be_eq_obj *eq_obj =  &adapter->rx_eq;
 902         u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
 903         u16 i, rxq_idx = 0, vid, j;
 904         u8 vtm;
 905
 906         num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
 907         /* Is it a flush compl that has no data */
 908         if (unlikely(num_rcvd == 0))
 909                 return;
 910
 911         pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
 912         vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 913         rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
 914         vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
 915
 916         /* vlanf could be wrongly set in some cards.
 917          * ignore if vtm is not set */
 918         if ((adapter->cap & 0x400) && !vtm)
 919                 vlanf = 0;
 920
 921         skb = napi_get_frags(&eq_obj->napi);
 922         if (!skb) {
 923                 be_rx_compl_discard(adapter, rxcp);
 924                 return;
 925         }
 926
 927         remaining = pkt_size;
 928         for (i = 0, j = -1; i < num_rcvd; i++) {
 929                 page_info = get_rx_page_info(adapter, rxq_idx);
 930
 931                 curr_frag_len = min(remaining, rx_frag_size);
 932
 933                 /* Coalesce all frags from the same physical page in one slot */
 934                 if (i == 0 || page_info->page_offset == 0) {
 935                         /* First frag or Fresh page */
 936                         j++;
 937                         skb_shinfo(skb)->frags[j].page = page_info->page;
 938                         skb_shinfo(skb)->frags[j].page_offset =
 939                                                         page_info->page_offset;
 940                         skb_shinfo(skb)->frags[j].size = 0;
 941                 } else {
 942                         put_page(page_info->page);
 943                 }
 944                 skb_shinfo(skb)->frags[j].size += curr_frag_len;
 945
 946                 remaining -= curr_frag_len;
 947                 index_inc(&rxq_idx, rxq->len);
 948                 memset(page_info, 0, sizeof(*page_info));
 949         }
 950         BUG_ON(j > MAX_SKB_FRAGS);
 951
 952         skb_shinfo(skb)->nr_frags = j + 1;
 953         skb->len = pkt_size;
 954         skb->data_len = pkt_size;
 955         skb->truesize += pkt_size;
 956         skb->ip_summed = CHECKSUM_UNNECESSARY;
 957
 958         if (likely(!vlanf)) {
 959                 napi_gro_frags(&eq_obj->napi);
 960         } else {
 961                 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
 962                 vid = swab16(vid);
 963
 964                 if (!adapter->vlan_grp || adapter->vlans_added == 0)
 965                         return;
 966
 967                 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
 968         }
 969
 970         be_rx_stats_update(adapter, pkt_size, num_rcvd);
 971 }
 972
 973 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
 974 {
 975         struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
 976
 977         if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
 978                 return NULL;
 979
 980         rmb();
 981         be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
 982
 983         queue_tail_inc(&adapter->rx_obj.cq);
 984         return rxcp;
 985 }
 986
 987 /* To reset the valid bit, we need to reset the whole word as
 988  * when walking the queue the valid entries are little-endian
 989  * and invalid entries are host endian
 990  */
 991 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
 992 {
 993         rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
 994 }
 995
 996 static inline struct page *be_alloc_pages(u32 size)
 997 {
 998         gfp_t alloc_flags = GFP_ATOMIC;
 999         u32 order = get_order(size);
1000         if (order > 0)
1001                 alloc_flags |= __GFP_COMP;
1002         return  alloc_pages(alloc_flags, order);
1003 }
1004
1005 /*
1006  * Allocate a page, split it to fragments of size rx_frag_size and post as
1007  * receive buffers to BE
1008  */
1009 static void be_post_rx_frags(struct be_adapter *adapter)
1010 {
1011         struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
1012         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
1013         struct be_queue_info *rxq = &adapter->rx_obj.q;
1014         struct page *pagep = NULL;
1015         struct be_eth_rx_d *rxd;
1016         u64 page_dmaaddr = 0, frag_dmaaddr;
1017         u32 posted, page_offset = 0;
1018
1019         page_info = &page_info_tbl[rxq->head];
1020         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
1021                 if (!pagep) {
1022                         pagep = be_alloc_pages(adapter->big_page_size);
1023                         if (unlikely(!pagep)) {
1024                                 drvr_stats(adapter)->be_ethrx_post_fail++;
1025                                 break;
1026                         }
1027                         page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
1028                                                 adapter->big_page_size,
1029                                                 PCI_DMA_FROMDEVICE);
1030                         page_info->page_offset = 0;
1031                 } else {
1032                         get_page(pagep);
1033                         page_info->page_offset = page_offset + rx_frag_size;
1034                 }
1035                 page_offset = page_info->page_offset;
1036                 page_info->page = pagep;
1037                 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
1038                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
1039
1040                 rxd = queue_head_node(rxq);
1041                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1042                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1043
1044                 /* Any space left in the current big page for another frag? */
1045                 if ((page_offset + rx_frag_size + rx_frag_size) >
1046                                         adapter->big_page_size) {
1047                         pagep = NULL;
1048                         page_info->last_page_user = true;
1049                 }
1050
1051                 prev_page_info = page_info;
1052                 queue_head_inc(rxq);
1053                 page_info = &page_info_tbl[rxq->head];
1054         }
1055         if (pagep)
1056                 prev_page_info->last_page_user = true;
1057
1058         if (posted) {
1059                 atomic_add(posted, &rxq->used);
1060                 be_rxq_notify(adapter, rxq->id, posted);
1061         } else if (atomic_read(&rxq->used) == 0) {
1062                 /* Let be_worker replenish when memory is available */
1063                 adapter->rx_post_starved = true;
1064         }
1065 }
1066
1067 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1068 {
1069         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1070
1071         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1072                 return NULL;
1073
1074         rmb();
1075         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1076
1077         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1078
1079         queue_tail_inc(tx_cq);
1080         return txcp;
1081 }
1082
1083 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
1084 {
1085         struct be_queue_info *txq = &adapter->tx_obj.q;
1086         struct be_eth_wrb *wrb;
1087         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1088         struct sk_buff *sent_skb;
1089         u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1090         bool unmap_skb_hdr = true;
1091
1092         sent_skb = sent_skbs[txq->tail];
1093         BUG_ON(!sent_skb);
1094         sent_skbs[txq->tail] = NULL;
1095
1096         /* skip header wrb */
1097         queue_tail_inc(txq);
1098
1099         do {
1100                 cur_index = txq->tail;
1101                 wrb = queue_tail_node(txq);
1102                 unmap_tx_frag(adapter->pdev, wrb, (unmap_skb_hdr &&
1103                                         skb_headlen(sent_skb)));
1104                 unmap_skb_hdr = false;
1105
1106                 num_wrbs++;
1107                 queue_tail_inc(txq);
1108         } while (cur_index != last_index);
1109
1110         atomic_sub(num_wrbs, &txq->used);
1111
1112         kfree_skb(sent_skb);
1113 }
1114
1115 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1116 {
1117         struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1118
1119         if (!eqe->evt)
1120                 return NULL;
1121
1122         rmb();
1123         eqe->evt = le32_to_cpu(eqe->evt);
1124         queue_tail_inc(&eq_obj->q);
1125         return eqe;
1126 }
1127
1128 static int event_handle(struct be_adapter *adapter,
1129                         struct be_eq_obj *eq_obj)
1130 {
1131         struct be_eq_entry *eqe;
1132         u16 num = 0;
1133
1134         while ((eqe = event_get(eq_obj)) != NULL) {
1135                 eqe->evt = 0;
1136                 num++;
1137         }
1138
1139         /* Deal with any spurious interrupts that come
1140          * without events
1141          */
1142         be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1143         if (num)
1144                 napi_schedule(&eq_obj->napi);
1145
1146         return num;
1147 }
1148
1149 /* Just read and notify events without processing them.
1150  * Used at the time of destroying event queues */
1151 static void be_eq_clean(struct be_adapter *adapter,
1152                         struct be_eq_obj *eq_obj)
1153 {
1154         struct be_eq_entry *eqe;
1155         u16 num = 0;
1156
1157         while ((eqe = event_get(eq_obj)) != NULL) {
1158                 eqe->evt = 0;
1159                 num++;
1160         }
1161
1162         if (num)
1163                 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1164 }
1165
1166 static void be_rx_q_clean(struct be_adapter *adapter)
1167 {
1168         struct be_rx_page_info *page_info;
1169         struct be_queue_info *rxq = &adapter->rx_obj.q;
1170         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1171         struct be_eth_rx_compl *rxcp;
1172         u16 tail;
1173
1174         /* First cleanup pending rx completions */
1175         while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1176                 be_rx_compl_discard(adapter, rxcp);
1177                 be_rx_compl_reset(rxcp);
1178                 be_cq_notify(adapter, rx_cq->id, true, 1);
1179         }
1180
1181         /* Then free posted rx buffer that were not used */
1182         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1183         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1184                 page_info = get_rx_page_info(adapter, tail);
1185                 put_page(page_info->page);
1186                 memset(page_info, 0, sizeof(*page_info));
1187         }
1188         BUG_ON(atomic_read(&rxq->used));
1189 }
1190
1191 static void be_tx_compl_clean(struct be_adapter *adapter)
1192 {
1193         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1194         struct be_queue_info *txq = &adapter->tx_obj.q;
1195         struct be_eth_tx_compl *txcp;
1196         u16 end_idx, cmpl = 0, timeo = 0;
1197         struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1198         struct sk_buff *sent_skb;
1199         bool dummy_wrb;
1200
1201         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1202         do {
1203                 while ((txcp = be_tx_compl_get(tx_cq))) {
1204                         end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1205                                         wrb_index, txcp);
1206                         be_tx_compl_process(adapter, end_idx);
1207                         cmpl++;
1208                 }
1209                 if (cmpl) {
1210                         be_cq_notify(adapter, tx_cq->id, false, cmpl);
1211                         cmpl = 0;
1212                 }
1213
1214                 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1215                         break;
1216
1217                 mdelay(1);
1218         } while (true);
1219
1220         if (atomic_read(&txq->used))
1221                 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1222                         atomic_read(&txq->used));
1223
1224         /* free posted tx for which compls will never arrive */
1225         while (atomic_read(&txq->used)) {
1226                 sent_skb = sent_skbs[txq->tail];
1227                 end_idx = txq->tail;
1228                 index_adv(&end_idx,
1229                         wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1230                 be_tx_compl_process(adapter, end_idx);
1231         }
1232 }
1233
1234 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1235 {
1236         struct be_queue_info *q;
1237
1238         q = &adapter->mcc_obj.q;
1239         if (q->created)
1240                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1241         be_queue_free(adapter, q);
1242
1243         q = &adapter->mcc_obj.cq;
1244         if (q->created)
1245                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1246         be_queue_free(adapter, q);
1247 }
1248
1249 /* Must be called only after TX qs are created as MCC shares TX EQ */
1250 static int be_mcc_queues_create(struct be_adapter *adapter)
1251 {
1252         struct be_queue_info *q, *cq;
1253
1254         /* Alloc MCC compl queue */
1255         cq = &adapter->mcc_obj.cq;
1256         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1257                         sizeof(struct be_mcc_compl)))
1258                 goto err;
1259
1260         /* Ask BE to create MCC compl queue; share TX's eq */
1261         if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1262                 goto mcc_cq_free;
1263
1264         /* Alloc MCC queue */
1265         q = &adapter->mcc_obj.q;
1266         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1267                 goto mcc_cq_destroy;
1268
1269         /* Ask BE to create MCC queue */
1270         if (be_cmd_mccq_create(adapter, q, cq))
1271                 goto mcc_q_free;
1272
1273         return 0;
1274
1275 mcc_q_free:
1276         be_queue_free(adapter, q);
1277 mcc_cq_destroy:
1278         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1279 mcc_cq_free:
1280         be_queue_free(adapter, cq);
1281 err:
1282         return -1;
1283 }
1284
1285 static void be_tx_queues_destroy(struct be_adapter *adapter)
1286 {
1287         struct be_queue_info *q;
1288
1289         q = &adapter->tx_obj.q;
1290         if (q->created)
1291                 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1292         be_queue_free(adapter, q);
1293
1294         q = &adapter->tx_obj.cq;
1295         if (q->created)
1296                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1297         be_queue_free(adapter, q);
1298
1299         /* Clear any residual events */
1300         be_eq_clean(adapter, &adapter->tx_eq);
1301
1302         q = &adapter->tx_eq.q;
1303         if (q->created)
1304                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1305         be_queue_free(adapter, q);
1306 }
1307
1308 static int be_tx_queues_create(struct be_adapter *adapter)
1309 {
1310         struct be_queue_info *eq, *q, *cq;
1311
1312         adapter->tx_eq.max_eqd = 0;
1313         adapter->tx_eq.min_eqd = 0;
1314         adapter->tx_eq.cur_eqd = 96;
1315         adapter->tx_eq.enable_aic = false;
1316         /* Alloc Tx Event queue */
1317         eq = &adapter->tx_eq.q;
1318         if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1319                 return -1;
1320
1321         /* Ask BE to create Tx Event queue */
1322         if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1323                 goto tx_eq_free;
1324         adapter->base_eq_id = adapter->tx_eq.q.id;
1325
1326         /* Alloc TX eth compl queue */
1327         cq = &adapter->tx_obj.cq;
1328         if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1329                         sizeof(struct be_eth_tx_compl)))
1330                 goto tx_eq_destroy;
1331
1332         /* Ask BE to create Tx eth compl queue */
1333         if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1334                 goto tx_cq_free;
1335
1336         /* Alloc TX eth queue */
1337         q = &adapter->tx_obj.q;
1338         if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1339                 goto tx_cq_destroy;
1340
1341         /* Ask BE to create Tx eth queue */
1342         if (be_cmd_txq_create(adapter, q, cq))
1343                 goto tx_q_free;
1344         return 0;
1345
1346 tx_q_free:
1347         be_queue_free(adapter, q);
1348 tx_cq_destroy:
1349         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1350 tx_cq_free:
1351         be_queue_free(adapter, cq);
1352 tx_eq_destroy:
1353         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1354 tx_eq_free:
1355         be_queue_free(adapter, eq);
1356         return -1;
1357 }
1358
1359 static void be_rx_queues_destroy(struct be_adapter *adapter)
1360 {
1361         struct be_queue_info *q;
1362
1363         q = &adapter->rx_obj.q;
1364         if (q->created) {
1365                 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1366
1367                 /* After the rxq is invalidated, wait for a grace time
1368                  * of 1ms for all dma to end and the flush compl to arrive
1369                  */
1370                 mdelay(1);
1371                 be_rx_q_clean(adapter);
1372         }
1373         be_queue_free(adapter, q);
1374
1375         q = &adapter->rx_obj.cq;
1376         if (q->created)
1377                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1378         be_queue_free(adapter, q);
1379
1380         /* Clear any residual events */
1381         be_eq_clean(adapter, &adapter->rx_eq);
1382
1383         q = &adapter->rx_eq.q;
1384         if (q->created)
1385                 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1386         be_queue_free(adapter, q);
1387 }
1388
1389 static int be_rx_queues_create(struct be_adapter *adapter)
1390 {
1391         struct be_queue_info *eq, *q, *cq;
1392         int rc;
1393
1394         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1395         adapter->rx_eq.max_eqd = BE_MAX_EQD;
1396         adapter->rx_eq.min_eqd = 0;
1397         adapter->rx_eq.cur_eqd = 0;
1398         adapter->rx_eq.enable_aic = true;
1399
1400         /* Alloc Rx Event queue */
1401         eq = &adapter->rx_eq.q;
1402         rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1403                                 sizeof(struct be_eq_entry));
1404         if (rc)
1405                 return rc;
1406
1407         /* Ask BE to create Rx Event queue */
1408         rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1409         if (rc)
1410                 goto rx_eq_free;
1411
1412         /* Alloc RX eth compl queue */
1413         cq = &adapter->rx_obj.cq;
1414         rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1415                         sizeof(struct be_eth_rx_compl));
1416         if (rc)
1417                 goto rx_eq_destroy;
1418
1419         /* Ask BE to create Rx eth compl queue */
1420         rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1421         if (rc)
1422                 goto rx_cq_free;
1423
1424         /* Alloc RX eth queue */
1425         q = &adapter->rx_obj.q;
1426         rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1427         if (rc)
1428                 goto rx_cq_destroy;
1429
1430         /* Ask BE to create Rx eth queue */
1431         rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1432                 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1433         if (rc)
1434                 goto rx_q_free;
1435
1436         return 0;
1437 rx_q_free:
1438         be_queue_free(adapter, q);
1439 rx_cq_destroy:
1440         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1441 rx_cq_free:
1442         be_queue_free(adapter, cq);
1443 rx_eq_destroy:
1444         be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1445 rx_eq_free:
1446         be_queue_free(adapter, eq);
1447         return rc;
1448 }
1449
1450 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1451 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1452 {
1453         return eq_id - adapter->base_eq_id;
1454 }
1455
1456 static irqreturn_t be_intx(int irq, void *dev)
1457 {
1458         struct be_adapter *adapter = dev;
1459         int isr;
1460
1461         isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1462                 (adapter->tx_eq.q.id/ 8) * CEV_ISR_SIZE);
1463         if (!isr)
1464                 return IRQ_NONE;
1465
1466         event_handle(adapter, &adapter->tx_eq);
1467         event_handle(adapter, &adapter->rx_eq);
1468
1469         return IRQ_HANDLED;
1470 }
1471
1472 static irqreturn_t be_msix_rx(int irq, void *dev)
1473 {
1474         struct be_adapter *adapter = dev;
1475
1476         event_handle(adapter, &adapter->rx_eq);
1477
1478         return IRQ_HANDLED;
1479 }
1480
1481 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1482 {
1483         struct be_adapter *adapter = dev;
1484
1485         event_handle(adapter, &adapter->tx_eq);
1486
1487         return IRQ_HANDLED;
1488 }
1489
1490 static inline bool do_gro(struct be_adapter *adapter,
1491                         struct be_eth_rx_compl *rxcp)
1492 {
1493         int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1494         int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1495
1496         if (err)
1497                 drvr_stats(adapter)->be_rxcp_err++;
1498
1499         return (tcp_frame && !err) ? true : false;
1500 }
1501
1502 int be_poll_rx(struct napi_struct *napi, int budget)
1503 {
1504         struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1505         struct be_adapter *adapter =
1506                 container_of(rx_eq, struct be_adapter, rx_eq);
1507         struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1508         struct be_eth_rx_compl *rxcp;
1509         u32 work_done;
1510
1511         adapter->stats.drvr_stats.be_rx_polls++;
1512         for (work_done = 0; work_done < budget; work_done++) {
1513                 rxcp = be_rx_compl_get(adapter);
1514                 if (!rxcp)
1515                         break;
1516
1517                 if (do_gro(adapter, rxcp))
1518                         be_rx_compl_process_gro(adapter, rxcp);
1519                 else
1520                         be_rx_compl_process(adapter, rxcp);
1521
1522                 be_rx_compl_reset(rxcp);
1523         }
1524
1525         /* Refill the queue */
1526         if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1527                 be_post_rx_frags(adapter);
1528
1529         /* All consumed */
1530         if (work_done < budget) {
1531                 napi_complete(napi);
1532                 be_cq_notify(adapter, rx_cq->id, true, work_done);
1533         } else {
1534                 /* More to be consumed; continue with interrupts disabled */
1535                 be_cq_notify(adapter, rx_cq->id, false, work_done);
1536         }
1537         return work_done;
1538 }
1539
1540 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1541  * For TX/MCC we don't honour budget; consume everything
1542  */
1543 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1544 {
1545         struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1546         struct be_adapter *adapter =
1547                 container_of(tx_eq, struct be_adapter, tx_eq);
1548         struct be_queue_info *txq = &adapter->tx_obj.q;
1549         struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1550         struct be_eth_tx_compl *txcp;
1551         int tx_compl = 0, mcc_compl, status = 0;
1552         u16 end_idx;
1553
1554         while ((txcp = be_tx_compl_get(tx_cq))) {
1555                 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1556                                 wrb_index, txcp);
1557                 be_tx_compl_process(adapter, end_idx);
1558                 tx_compl++;
1559         }
1560
1561         mcc_compl = be_process_mcc(adapter, &status);
1562
1563         napi_complete(napi);
1564
1565         if (mcc_compl) {
1566                 struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
1567                 be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
1568         }
1569
1570         if (tx_compl) {
1571                 be_cq_notify(adapter, adapter->tx_obj.cq.id, true, tx_compl);
1572
1573                 /* As Tx wrbs have been freed up, wake up netdev queue if
1574                  * it was stopped due to lack of tx wrbs.
1575                  */
1576                 if (netif_queue_stopped(adapter->netdev) &&
1577                         atomic_read(&txq->used) < txq->len / 2) {
1578                         netif_wake_queue(adapter->netdev);
1579                 }
1580
1581                 drvr_stats(adapter)->be_tx_events++;
1582                 drvr_stats(adapter)->be_tx_compl += tx_compl;
1583         }
1584
1585         return 1;
1586 }
1587
1588 static void be_worker(struct work_struct *work)
1589 {
1590         struct be_adapter *adapter =
1591                 container_of(work, struct be_adapter, work.work);
1592
1593         be_cmd_get_stats(adapter, &adapter->stats.cmd);
1594
1595         /* Set EQ delay */
1596         be_rx_eqd_update(adapter);
1597
1598         be_tx_rate_update(adapter);
1599         be_rx_rate_update(adapter);
1600
1601         if (adapter->rx_post_starved) {
1602                 adapter->rx_post_starved = false;
1603                 be_post_rx_frags(adapter);
1604         }
1605
1606         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1607 }
1608
1609 static void be_msix_disable(struct be_adapter *adapter)
1610 {
1611         if (adapter->msix_enabled) {
1612                 pci_disable_msix(adapter->pdev);
1613                 adapter->msix_enabled = false;
1614         }
1615 }
1616
1617 static void be_msix_enable(struct be_adapter *adapter)
1618 {
1619         int i, status;
1620
1621         for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1622                 adapter->msix_entries[i].entry = i;
1623
1624         status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1625                 BE_NUM_MSIX_VECTORS);
1626         if (status == 0)
1627                 adapter->msix_enabled = true;
1628 }
1629
1630 static void be_sriov_enable(struct be_adapter *adapter)
1631 {
1632 #ifdef CONFIG_PCI_IOV
1633         int status;
1634         if (be_physfn(adapter) && num_vfs) {
1635                 status = pci_enable_sriov(adapter->pdev, num_vfs);
1636                 adapter->sriov_enabled = status ? false : true;
1637         }
1638 #endif
1639 }
1640
1641 static void be_sriov_disable(struct be_adapter *adapter)
1642 {
1643 #ifdef CONFIG_PCI_IOV
1644         if (adapter->sriov_enabled) {
1645                 pci_disable_sriov(adapter->pdev);
1646                 adapter->sriov_enabled = false;
1647         }
1648 #endif
1649 }
1650
1651 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1652 {
1653         return adapter->msix_entries[
1654                         be_evt_bit_get(adapter, eq_id)].vector;
1655 }
1656
1657 static int be_request_irq(struct be_adapter *adapter,
1658                 struct be_eq_obj *eq_obj,
1659                 void *handler, char *desc)
1660 {
1661         struct net_device *netdev = adapter->netdev;
1662         int vec;
1663
1664         sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1665         vec = be_msix_vec_get(adapter, eq_obj->q.id);
1666         return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1667 }
1668
1669 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1670 {
1671         int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1672         free_irq(vec, adapter);
1673 }
1674
1675 static int be_msix_register(struct be_adapter *adapter)
1676 {
1677         int status;
1678
1679         status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1680         if (status)
1681                 goto err;
1682
1683         status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1684         if (status)
1685                 goto free_tx_irq;
1686
1687         return 0;
1688
1689 free_tx_irq:
1690         be_free_irq(adapter, &adapter->tx_eq);
1691 err:
1692         dev_warn(&adapter->pdev->dev,
1693                 "MSIX Request IRQ failed - err %d\n", status);
1694         pci_disable_msix(adapter->pdev);
1695         adapter->msix_enabled = false;
1696         return status;
1697 }
1698
1699 static int be_irq_register(struct be_adapter *adapter)
1700 {
1701         struct net_device *netdev = adapter->netdev;
1702         int status;
1703
1704         if (adapter->msix_enabled) {
1705                 status = be_msix_register(adapter);
1706                 if (status == 0)
1707                         goto done;
1708                 /* INTx is not supported for VF */
1709                 if (!be_physfn(adapter))
1710                         return status;
1711         }
1712
1713         /* INTx */
1714         netdev->irq = adapter->pdev->irq;
1715         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1716                         adapter);
1717         if (status) {
1718                 dev_err(&adapter->pdev->dev,
1719                         "INTx request IRQ failed - err %d\n", status);
1720                 return status;
1721         }
1722 done:
1723         adapter->isr_registered = true;
1724         return 0;
1725 }
1726
1727 static void be_irq_unregister(struct be_adapter *adapter)
1728 {
1729         struct net_device *netdev = adapter->netdev;
1730
1731         if (!adapter->isr_registered)
1732                 return;
1733
1734         /* INTx */
1735         if (!adapter->msix_enabled) {
1736                 free_irq(netdev->irq, adapter);
1737                 goto done;
1738         }
1739
1740         /* MSIx */
1741         be_free_irq(adapter, &adapter->tx_eq);
1742         be_free_irq(adapter, &adapter->rx_eq);
1743 done:
1744         adapter->isr_registered = false;
1745 }
1746
1747 static int be_close(struct net_device *netdev)
1748 {
1749         struct be_adapter *adapter = netdev_priv(netdev);
1750         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1751         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1752         int vec;
1753
1754         cancel_delayed_work_sync(&adapter->work);
1755
1756         be_async_mcc_disable(adapter);
1757
1758         netif_stop_queue(netdev);
1759         netif_carrier_off(netdev);
1760         adapter->link_up = false;
1761
1762         be_intr_set(adapter, false);
1763
1764         if (adapter->msix_enabled) {
1765                 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1766                 synchronize_irq(vec);
1767                 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1768                 synchronize_irq(vec);
1769         } else {
1770                 synchronize_irq(netdev->irq);
1771         }
1772         be_irq_unregister(adapter);
1773
1774         napi_disable(&rx_eq->napi);
1775         napi_disable(&tx_eq->napi);
1776
1777         /* Wait for all pending tx completions to arrive so that
1778          * all tx skbs are freed.
1779          */
1780         be_tx_compl_clean(adapter);
1781
1782         return 0;
1783 }
1784
1785 static int be_open(struct net_device *netdev)
1786 {
1787         struct be_adapter *adapter = netdev_priv(netdev);
1788         struct be_eq_obj *rx_eq = &adapter->rx_eq;
1789         struct be_eq_obj *tx_eq = &adapter->tx_eq;
1790         bool link_up;
1791         int status;
1792         u8 mac_speed;
1793         u16 link_speed;
1794
1795         /* First time posting */
1796         be_post_rx_frags(adapter);
1797
1798         napi_enable(&rx_eq->napi);
1799         napi_enable(&tx_eq->napi);
1800
1801         be_irq_register(adapter);
1802
1803         be_intr_set(adapter, true);
1804
1805         /* The evt queues are created in unarmed state; arm them */
1806         be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1807         be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1808
1809         /* Rx compl queue may be in unarmed state; rearm it */
1810         be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1811
1812         /* Now that interrupts are on we can process async mcc */
1813         be_async_mcc_enable(adapter);
1814
1815         schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1816
1817         status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1818                         &link_speed);
1819         if (status)
1820                 goto err;
1821         be_link_status_update(adapter, link_up);
1822
1823         if (be_physfn(adapter)) {
1824                 status = be_vid_config(adapter);
1825                 if (status)
1826                         goto err;
1827
1828                 status = be_cmd_set_flow_control(adapter,
1829                                 adapter->tx_fc, adapter->rx_fc);
1830                 if (status)
1831                         goto err;
1832         }
1833
1834         return 0;
1835 err:
1836         be_close(adapter->netdev);
1837         return -EIO;
1838 }
1839
1840 static int be_setup_wol(struct be_adapter *adapter, bool enable)
1841 {
1842         struct be_dma_mem cmd;
1843         int status = 0;
1844         u8 mac[ETH_ALEN];
1845
1846         memset(mac, 0, ETH_ALEN);
1847
1848         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
1849         cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
1850         if (cmd.va == NULL)
1851                 return -1;
1852         memset(cmd.va, 0, cmd.size);
1853
1854         if (enable) {
1855                 status = pci_write_config_dword(adapter->pdev,
1856                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
1857                 if (status) {
1858                         dev_err(&adapter->pdev->dev,
1859                                 "Could not enable Wake-on-lan\n");
1860                         pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
1861                                         cmd.dma);
1862                         return status;
1863                 }
1864                 status = be_cmd_enable_magic_wol(adapter,
1865                                 adapter->netdev->dev_addr, &cmd);
1866                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
1867                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
1868         } else {
1869                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
1870                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
1871                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
1872         }
1873
1874         pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
1875         return status;
1876 }
1877
1878 static int be_setup(struct be_adapter *adapter)
1879 {
1880         struct net_device *netdev = adapter->netdev;
1881         u32 cap_flags, en_flags, vf = 0;
1882         int status;
1883         u8 mac[ETH_ALEN];
1884
1885         cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST;
1886
1887         if (be_physfn(adapter)) {
1888                 cap_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS |
1889                                 BE_IF_FLAGS_PROMISCUOUS |
1890                                 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1891                 en_flags |= BE_IF_FLAGS_PASS_L3L4_ERRORS;
1892         }
1893
1894         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1895                         netdev->dev_addr, false/* pmac_invalid */,
1896                         &adapter->if_handle, &adapter->pmac_id, 0);
1897         if (status != 0)
1898                 goto do_none;
1899
1900         if (be_physfn(adapter)) {
1901                 while (vf < num_vfs) {
1902                         cap_flags = en_flags = BE_IF_FLAGS_UNTAGGED
1903                                         | BE_IF_FLAGS_BROADCAST;
1904                         status = be_cmd_if_create(adapter, cap_flags, en_flags,
1905                                         mac, true, &adapter->vf_if_handle[vf],
1906                                         NULL, vf+1);
1907                         if (status) {
1908                                 dev_err(&adapter->pdev->dev,
1909                                 "Interface Create failed for VF %d\n", vf);
1910                                 goto if_destroy;
1911                         }
1912                         vf++;
1913                 }
1914         } else if (!be_physfn(adapter)) {
1915                 status = be_cmd_mac_addr_query(adapter, mac,
1916                         MAC_ADDRESS_TYPE_NETWORK, false, adapter->if_handle);
1917                 if (!status) {
1918                         memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
1919                         memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
1920                 }
1921         }
1922
1923         status = be_tx_queues_create(adapter);
1924         if (status != 0)
1925                 goto if_destroy;
1926
1927         status = be_rx_queues_create(adapter);
1928         if (status != 0)
1929                 goto tx_qs_destroy;
1930
1931         status = be_mcc_queues_create(adapter);
1932         if (status != 0)
1933                 goto rx_qs_destroy;
1934
1935         adapter->link_speed = -1;
1936
1937         return 0;
1938
1939 rx_qs_destroy:
1940         be_rx_queues_destroy(adapter);
1941 tx_qs_destroy:
1942         be_tx_queues_destroy(adapter);
1943 if_destroy:
1944         for (vf = 0; vf < num_vfs; vf++)
1945                 if (adapter->vf_if_handle[vf])
1946                         be_cmd_if_destroy(adapter, adapter->vf_if_handle[vf]);
1947         be_cmd_if_destroy(adapter, adapter->if_handle);
1948 do_none:
1949         return status;
1950 }
1951
1952 static int be_clear(struct be_adapter *adapter)
1953 {
1954         be_mcc_queues_destroy(adapter);
1955         be_rx_queues_destroy(adapter);
1956         be_tx_queues_destroy(adapter);
1957
1958         be_cmd_if_destroy(adapter, adapter->if_handle);
1959
1960         /* tell fw we're done with firing cmds */
1961         be_cmd_fw_clean(adapter);
1962         return 0;
1963 }
1964
1965
1966 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
1967 char flash_cookie[2][16] =      {"*** SE FLAS",
1968                                 "H DIRECTORY *** "};
1969
1970 static bool be_flash_redboot(struct be_adapter *adapter,
1971                         const u8 *p, u32 img_start, int image_size,
1972                         int hdr_size)
1973 {
1974         u32 crc_offset;
1975         u8 flashed_crc[4];
1976         int status;
1977
1978         crc_offset = hdr_size + img_start + image_size - 4;
1979
1980         p += crc_offset;
1981
1982         status = be_cmd_get_flash_crc(adapter, flashed_crc,
1983                         (image_size - 4));
1984         if (status) {
1985                 dev_err(&adapter->pdev->dev,
1986                 "could not get crc from flash, not flashing redboot\n");
1987                 return false;
1988         }
1989
1990         /*update redboot only if crc does not match*/
1991         if (!memcmp(flashed_crc, p, 4))
1992                 return false;
1993         else
1994                 return true;
1995 }
1996
1997 static int be_flash_data(struct be_adapter *adapter,
1998                         const struct firmware *fw,
1999                         struct be_dma_mem *flash_cmd, int num_of_images)
2000
2001 {
2002         int status = 0, i, filehdr_size = 0;
2003         u32 total_bytes = 0, flash_op;
2004         int num_bytes;
2005         const u8 *p = fw->data;
2006         struct be_cmd_write_flashrom *req = flash_cmd->va;
2007         struct flash_comp *pflashcomp;
2008         int num_comp;
2009
2010         struct flash_comp gen3_flash_types[9] = {
2011                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, IMG_TYPE_ISCSI_ACTIVE,
2012                         FLASH_IMAGE_MAX_SIZE_g3},
2013                 { FLASH_REDBOOT_START_g3, IMG_TYPE_REDBOOT,
2014                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3},
2015                 { FLASH_iSCSI_BIOS_START_g3, IMG_TYPE_BIOS,
2016                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2017                 { FLASH_PXE_BIOS_START_g3, IMG_TYPE_PXE_BIOS,
2018                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2019                 { FLASH_FCoE_BIOS_START_g3, IMG_TYPE_FCOE_BIOS,
2020                         FLASH_BIOS_IMAGE_MAX_SIZE_g3},
2021                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, IMG_TYPE_ISCSI_BACKUP,
2022                         FLASH_IMAGE_MAX_SIZE_g3},
2023                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, IMG_TYPE_FCOE_FW_ACTIVE,
2024                         FLASH_IMAGE_MAX_SIZE_g3},
2025                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, IMG_TYPE_FCOE_FW_BACKUP,
2026                         FLASH_IMAGE_MAX_SIZE_g3},
2027                 { FLASH_NCSI_START_g3, IMG_TYPE_NCSI_FW,
2028                         FLASH_NCSI_IMAGE_MAX_SIZE_g3}
2029         };
2030         struct flash_comp gen2_flash_types[8] = {
2031                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, IMG_TYPE_ISCSI_ACTIVE,
2032                         FLASH_IMAGE_MAX_SIZE_g2},
2033                 { FLASH_REDBOOT_START_g2, IMG_TYPE_REDBOOT,
2034                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2},
2035                 { FLASH_iSCSI_BIOS_START_g2, IMG_TYPE_BIOS,
2036                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2037                 { FLASH_PXE_BIOS_START_g2, IMG_TYPE_PXE_BIOS,
2038                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2039                 { FLASH_FCoE_BIOS_START_g2, IMG_TYPE_FCOE_BIOS,
2040                         FLASH_BIOS_IMAGE_MAX_SIZE_g2},
2041                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, IMG_TYPE_ISCSI_BACKUP,
2042                         FLASH_IMAGE_MAX_SIZE_g2},
2043                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, IMG_TYPE_FCOE_FW_ACTIVE,
2044                         FLASH_IMAGE_MAX_SIZE_g2},
2045                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, IMG_TYPE_FCOE_FW_BACKUP,
2046                          FLASH_IMAGE_MAX_SIZE_g2}
2047         };
2048
2049         if (adapter->generation == BE_GEN3) {
2050                 pflashcomp = gen3_flash_types;
2051                 filehdr_size = sizeof(struct flash_file_hdr_g3);
2052                 num_comp = 9;
2053         } else {
2054                 pflashcomp = gen2_flash_types;
2055                 filehdr_size = sizeof(struct flash_file_hdr_g2);
2056                 num_comp = 8;
2057         }
2058         for (i = 0; i < num_comp; i++) {
2059                 if ((pflashcomp[i].optype == IMG_TYPE_NCSI_FW) &&
2060                                 memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
2061                         continue;
2062                 if ((pflashcomp[i].optype == IMG_TYPE_REDBOOT) &&
2063                         (!be_flash_redboot(adapter, fw->data,
2064                          pflashcomp[i].offset, pflashcomp[i].size,
2065                          filehdr_size)))
2066                         continue;
2067                 p = fw->data;
2068                 p += filehdr_size + pflashcomp[i].offset
2069                         + (num_of_images * sizeof(struct image_hdr));
2070         if (p + pflashcomp[i].size > fw->data + fw->size)
2071                 return -1;
2072         total_bytes = pflashcomp[i].size;
2073                 while (total_bytes) {
2074                         if (total_bytes > 32*1024)
2075                                 num_bytes = 32*1024;
2076                         else
2077                                 num_bytes = total_bytes;
2078                         total_bytes -= num_bytes;
2079
2080                         if (!total_bytes)
2081                                 flash_op = FLASHROM_OPER_FLASH;
2082                         else
2083                                 flash_op = FLASHROM_OPER_SAVE;
2084                         memcpy(req->params.data_buf, p, num_bytes);
2085                         p += num_bytes;
2086                         status = be_cmd_write_flashrom(adapter, flash_cmd,
2087                                 pflashcomp[i].optype, flash_op, num_bytes);
2088                         if (status) {
2089                                 dev_err(&adapter->pdev->dev,
2090                                         "cmd to write to flash rom failed.\n");
2091                                 return -1;
2092                         }
2093                         yield();
2094                 }
2095         }
2096         return 0;
2097 }
2098
2099 static int get_ufigen_type(struct flash_file_hdr_g2 *fhdr)
2100 {
2101         if (fhdr == NULL)
2102                 return 0;
2103         if (fhdr->build[0] == '3')
2104                 return BE_GEN3;
2105         else if (fhdr->build[0] == '2')
2106                 return BE_GEN2;
2107         else
2108                 return 0;
2109 }
2110
2111 int be_load_fw(struct be_adapter *adapter, u8 *func)
2112 {
2113         char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
2114         const struct firmware *fw;
2115         struct flash_file_hdr_g2 *fhdr;
2116         struct flash_file_hdr_g3 *fhdr3;
2117         struct image_hdr *img_hdr_ptr = NULL;
2118         struct be_dma_mem flash_cmd;
2119         int status, i = 0, num_imgs = 0;
2120         const u8 *p;
2121
2122         strcpy(fw_file, func);
2123
2124         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
2125         if (status)
2126                 goto fw_exit;
2127
2128         p = fw->data;
2129         fhdr = (struct flash_file_hdr_g2 *) p;
2130         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
2131
2132         flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
2133         flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
2134                                         &flash_cmd.dma);
2135         if (!flash_cmd.va) {
2136                 status = -ENOMEM;
2137                 dev_err(&adapter->pdev->dev,
2138                         "Memory allocation failure while flashing\n");
2139                 goto fw_exit;
2140         }
2141
2142         if ((adapter->generation == BE_GEN3) &&
2143                         (get_ufigen_type(fhdr) == BE_GEN3)) {
2144                 fhdr3 = (struct flash_file_hdr_g3 *) fw->data;
2145                 num_imgs = le32_to_cpu(fhdr3->num_imgs);
2146                 for (i = 0; i < num_imgs; i++) {
2147                         img_hdr_ptr = (struct image_hdr *) (fw->data +
2148                                         (sizeof(struct flash_file_hdr_g3) +
2149                                          i * sizeof(struct image_hdr)));
2150                         if (le32_to_cpu(img_hdr_ptr->imageid) == 1)
2151                                 status = be_flash_data(adapter, fw, &flash_cmd,
2152                                                         num_imgs);
2153                 }
2154         } else if ((adapter->generation == BE_GEN2) &&
2155                         (get_ufigen_type(fhdr) == BE_GEN2)) {
2156                 status = be_flash_data(adapter, fw, &flash_cmd, 0);
2157         } else {
2158                 dev_err(&adapter->pdev->dev,
2159                         "UFI and Interface are not compatible for flashing\n");
2160                 status = -1;
2161         }
2162
2163         pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
2164                                 flash_cmd.dma);
2165         if (status) {
2166                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
2167                 goto fw_exit;
2168         }
2169
2170         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
2171
2172 fw_exit:
2173         release_firmware(fw);
2174         return status;
2175 }
2176
2177 static struct net_device_ops be_netdev_ops = {
2178         .ndo_open               = be_open,
2179         .ndo_stop               = be_close,
2180         .ndo_start_xmit         = be_xmit,
2181         .ndo_get_stats          = be_get_stats,
2182         .ndo_set_rx_mode        = be_set_multicast_list,
2183         .ndo_set_mac_address    = be_mac_addr_set,
2184         .ndo_change_mtu         = be_change_mtu,
2185         .ndo_validate_addr      = eth_validate_addr,
2186         .ndo_vlan_rx_register   = be_vlan_register,
2187         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
2188         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
2189         .ndo_set_vf_mac         = be_set_vf_mac
2190 };
2191
2192 static void be_netdev_init(struct net_device *netdev)
2193 {
2194         struct be_adapter *adapter = netdev_priv(netdev);
2195
2196         netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
2197                 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
2198                 NETIF_F_GRO | NETIF_F_TSO6;
2199
2200         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
2201
2202         netdev->flags |= IFF_MULTICAST;
2203
2204         adapter->rx_csum = true;
2205
2206         /* Default settings for Rx and Tx flow control */
2207         adapter->rx_fc = true;
2208         adapter->tx_fc = true;
2209
2210         netif_set_gso_max_size(netdev, 65535);
2211
2212         BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
2213
2214         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
2215
2216         netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
2217                 BE_NAPI_WEIGHT);
2218         netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
2219                 BE_NAPI_WEIGHT);
2220
2221         netif_carrier_off(netdev);
2222         netif_stop_queue(netdev);
2223 }
2224
2225 static void be_unmap_pci_bars(struct be_adapter *adapter)
2226 {
2227         if (adapter->csr)
2228                 iounmap(adapter->csr);
2229         if (adapter->db)
2230                 iounmap(adapter->db);
2231         if (adapter->pcicfg && be_physfn(adapter))
2232                 iounmap(adapter->pcicfg);
2233 }
2234
2235 static int be_map_pci_bars(struct be_adapter *adapter)
2236 {
2237         u8 __iomem *addr;
2238         int pcicfg_reg, db_reg;
2239
2240         if (be_physfn(adapter)) {
2241                 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2242                                 pci_resource_len(adapter->pdev, 2));
2243                 if (addr == NULL)
2244                         return -ENOMEM;
2245                 adapter->csr = addr;
2246         }
2247
2248         if (adapter->generation == BE_GEN2) {
2249                 pcicfg_reg = 1;
2250                 db_reg = 4;
2251         } else {
2252                 pcicfg_reg = 0;
2253                 if (be_physfn(adapter))
2254                         db_reg = 4;
2255                 else
2256                         db_reg = 0;
2257         }
2258         addr = ioremap_nocache(pci_resource_start(adapter->pdev, db_reg),
2259                                 pci_resource_len(adapter->pdev, db_reg));
2260         if (addr == NULL)
2261                 goto pci_map_err;
2262         adapter->db = addr;
2263
2264         if (be_physfn(adapter)) {
2265                 addr = ioremap_nocache(
2266                                 pci_resource_start(adapter->pdev, pcicfg_reg),
2267                                 pci_resource_len(adapter->pdev, pcicfg_reg));
2268                 if (addr == NULL)
2269                         goto pci_map_err;
2270                 adapter->pcicfg = addr;
2271         } else
2272                 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
2273
2274         return 0;
2275 pci_map_err:
2276         be_unmap_pci_bars(adapter);
2277         return -ENOMEM;
2278 }
2279
2280
2281 static void be_ctrl_cleanup(struct be_adapter *adapter)
2282 {
2283         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2284
2285         be_unmap_pci_bars(adapter);
2286
2287         if (mem->va)
2288                 pci_free_consistent(adapter->pdev, mem->size,
2289                         mem->va, mem->dma);
2290
2291         mem = &adapter->mc_cmd_mem;
2292         if (mem->va)
2293                 pci_free_consistent(adapter->pdev, mem->size,
2294                         mem->va, mem->dma);
2295 }
2296
2297 static int be_ctrl_init(struct be_adapter *adapter)
2298 {
2299         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2300         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2301         struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2302         int status;
2303
2304         status = be_map_pci_bars(adapter);
2305         if (status)
2306                 goto done;
2307
2308         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2309         mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2310                                 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2311         if (!mbox_mem_alloc->va) {
2312                 status = -ENOMEM;
2313                 goto unmap_pci_bars;
2314         }
2315
2316         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2317         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2318         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2319         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2320
2321         mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2322         mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2323                         &mc_cmd_mem->dma);
2324         if (mc_cmd_mem->va == NULL) {
2325                 status = -ENOMEM;
2326                 goto free_mbox;
2327         }
2328         memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2329
2330         spin_lock_init(&adapter->mbox_lock);
2331         spin_lock_init(&adapter->mcc_lock);
2332         spin_lock_init(&adapter->mcc_cq_lock);
2333
2334         init_completion(&adapter->flash_compl);
2335         pci_save_state(adapter->pdev);
2336         return 0;
2337
2338 free_mbox:
2339         pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2340                 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2341
2342 unmap_pci_bars:
2343         be_unmap_pci_bars(adapter);
2344
2345 done:
2346         return status;
2347 }
2348
2349 static void be_stats_cleanup(struct be_adapter *adapter)
2350 {
2351         struct be_stats_obj *stats = &adapter->stats;
2352         struct be_dma_mem *cmd = &stats->cmd;
2353
2354         if (cmd->va)
2355                 pci_free_consistent(adapter->pdev, cmd->size,
2356                         cmd->va, cmd->dma);
2357 }
2358
2359 static int be_stats_init(struct be_adapter *adapter)
2360 {
2361         struct be_stats_obj *stats = &adapter->stats;
2362         struct be_dma_mem *cmd = &stats->cmd;
2363
2364         cmd->size = sizeof(struct be_cmd_req_get_stats);
2365         cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2366         if (cmd->va == NULL)
2367                 return -1;
2368         memset(cmd->va, 0, cmd->size);
2369         return 0;
2370 }
2371
2372 static void __devexit be_remove(struct pci_dev *pdev)
2373 {
2374         struct be_adapter *adapter = pci_get_drvdata(pdev);
2375
2376         if (!adapter)
2377                 return;
2378
2379         unregister_netdev(adapter->netdev);
2380
2381         be_clear(adapter);
2382
2383         be_stats_cleanup(adapter);
2384
2385         be_ctrl_cleanup(adapter);
2386
2387         be_sriov_disable(adapter);
2388
2389         be_msix_disable(adapter);
2390
2391         pci_set_drvdata(pdev, NULL);
2392         pci_release_regions(pdev);
2393         pci_disable_device(pdev);
2394
2395         free_netdev(adapter->netdev);
2396 }
2397
2398 static int be_get_config(struct be_adapter *adapter)
2399 {
2400         int status;
2401         u8 mac[ETH_ALEN];
2402
2403         status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2404         if (status)
2405                 return status;
2406
2407         status = be_cmd_query_fw_cfg(adapter,
2408                                 &adapter->port_num, &adapter->cap);
2409         if (status)
2410                 return status;
2411
2412         memset(mac, 0, ETH_ALEN);
2413
2414         if (be_physfn(adapter)) {
2415                 status = be_cmd_mac_addr_query(adapter, mac,
2416                         MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2417
2418                 if (status)
2419                         return status;
2420
2421                 if (!is_valid_ether_addr(mac))
2422                         return -EADDRNOTAVAIL;
2423
2424                 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2425                 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2426         }
2427
2428         if (adapter->cap & 0x400)
2429                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED/4;
2430         else
2431                 adapter->max_vlans = BE_NUM_VLANS_SUPPORTED;
2432
2433         return 0;
2434 }
2435
2436 static int __devinit be_probe(struct pci_dev *pdev,
2437                         const struct pci_device_id *pdev_id)
2438 {
2439         int status = 0;
2440         struct be_adapter *adapter;
2441         struct net_device *netdev;
2442
2443
2444         status = pci_enable_device(pdev);
2445         if (status)
2446                 goto do_none;
2447
2448         status = pci_request_regions(pdev, DRV_NAME);
2449         if (status)
2450                 goto disable_dev;
2451         pci_set_master(pdev);
2452
2453         netdev = alloc_etherdev(sizeof(struct be_adapter));
2454         if (netdev == NULL) {
2455                 status = -ENOMEM;
2456                 goto rel_reg;
2457         }
2458         adapter = netdev_priv(netdev);
2459
2460         switch (pdev->device) {
2461         case BE_DEVICE_ID1:
2462         case OC_DEVICE_ID1:
2463                 adapter->generation = BE_GEN2;
2464                 break;
2465         case BE_DEVICE_ID2:
2466         case OC_DEVICE_ID2:
2467                 adapter->generation = BE_GEN3;
2468                 break;
2469         default:
2470                 adapter->generation = 0;
2471         }
2472
2473         adapter->pdev = pdev;
2474         pci_set_drvdata(pdev, adapter);
2475         adapter->netdev = netdev;
2476         be_netdev_init(netdev);
2477         SET_NETDEV_DEV(netdev, &pdev->dev);
2478
2479         be_msix_enable(adapter);
2480
2481         status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2482         if (!status) {
2483                 netdev->features |= NETIF_F_HIGHDMA;
2484         } else {
2485                 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2486                 if (status) {
2487                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2488                         goto free_netdev;
2489                 }
2490         }
2491
2492         be_sriov_enable(adapter);
2493
2494         status = be_ctrl_init(adapter);
2495         if (status)
2496                 goto free_netdev;
2497
2498         /* sync up with fw's ready state */
2499         if (be_physfn(adapter)) {
2500                 status = be_cmd_POST(adapter);
2501                 if (status)
2502                         goto ctrl_clean;
2503         }
2504
2505         /* tell fw we're ready to fire cmds */
2506         status = be_cmd_fw_init(adapter);
2507         if (status)
2508                 goto ctrl_clean;
2509
2510         if (be_physfn(adapter)) {
2511                 status = be_cmd_reset_function(adapter);
2512                 if (status)
2513                         goto ctrl_clean;
2514         }
2515
2516         status = be_stats_init(adapter);
2517         if (status)
2518                 goto ctrl_clean;
2519
2520         status = be_get_config(adapter);
2521         if (status)
2522                 goto stats_clean;
2523
2524         INIT_DELAYED_WORK(&adapter->work, be_worker);
2525
2526         status = be_setup(adapter);
2527         if (status)
2528                 goto stats_clean;
2529
2530         status = register_netdev(netdev);
2531         if (status != 0)
2532                 goto unsetup;
2533
2534         dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2535         return 0;
2536
2537 unsetup:
2538         be_clear(adapter);
2539 stats_clean:
2540         be_stats_cleanup(adapter);
2541 ctrl_clean:
2542         be_ctrl_cleanup(adapter);
2543 free_netdev:
2544         be_msix_disable(adapter);
2545         be_sriov_disable(adapter);
2546         free_netdev(adapter->netdev);
2547         pci_set_drvdata(pdev, NULL);
2548 rel_reg:
2549         pci_release_regions(pdev);
2550 disable_dev:
2551         pci_disable_device(pdev);
2552 do_none:
2553         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2554         return status;
2555 }
2556
2557 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2558 {
2559         struct be_adapter *adapter = pci_get_drvdata(pdev);
2560         struct net_device *netdev =  adapter->netdev;
2561
2562         if (adapter->wol)
2563                 be_setup_wol(adapter, true);
2564
2565         netif_device_detach(netdev);
2566         if (netif_running(netdev)) {
2567                 rtnl_lock();
2568                 be_close(netdev);
2569                 rtnl_unlock();
2570         }
2571         be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2572         be_clear(adapter);
2573
2574         pci_save_state(pdev);
2575         pci_disable_device(pdev);
2576         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2577         return 0;
2578 }
2579
2580 static int be_resume(struct pci_dev *pdev)
2581 {
2582         int status = 0;
2583         struct be_adapter *adapter = pci_get_drvdata(pdev);
2584         struct net_device *netdev =  adapter->netdev;
2585
2586         netif_device_detach(netdev);
2587
2588         status = pci_enable_device(pdev);
2589         if (status)
2590                 return status;
2591
2592         pci_set_power_state(pdev, 0);
2593         pci_restore_state(pdev);
2594
2595         /* tell fw we're ready to fire cmds */
2596         status = be_cmd_fw_init(adapter);
2597         if (status)
2598                 return status;
2599
2600         be_setup(adapter);
2601         if (netif_running(netdev)) {
2602                 rtnl_lock();
2603                 be_open(netdev);
2604                 rtnl_unlock();
2605         }
2606         netif_device_attach(netdev);
2607
2608         if (adapter->wol)
2609                 be_setup_wol(adapter, false);
2610         return 0;
2611 }
2612
2613 /*
2614  * An FLR will stop BE from DMAing any data.
2615  */
2616 static void be_shutdown(struct pci_dev *pdev)
2617 {
2618         struct be_adapter *adapter = pci_get_drvdata(pdev);
2619         struct net_device *netdev =  adapter->netdev;
2620
2621         netif_device_detach(netdev);
2622
2623         be_cmd_reset_function(adapter);
2624
2625         if (adapter->wol)
2626                 be_setup_wol(adapter, true);
2627
2628         pci_disable_device(pdev);
2629 }
2630
2631 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
2632                                 pci_channel_state_t state)
2633 {
2634         struct be_adapter *adapter = pci_get_drvdata(pdev);
2635         struct net_device *netdev =  adapter->netdev;
2636
2637         dev_err(&adapter->pdev->dev, "EEH error detected\n");
2638
2639         adapter->eeh_err = true;
2640
2641         netif_device_detach(netdev);
2642
2643         if (netif_running(netdev)) {
2644                 rtnl_lock();
2645                 be_close(netdev);
2646                 rtnl_unlock();
2647         }
2648         be_clear(adapter);
2649
2650         if (state == pci_channel_io_perm_failure)
2651                 return PCI_ERS_RESULT_DISCONNECT;
2652
2653         pci_disable_device(pdev);
2654
2655         return PCI_ERS_RESULT_NEED_RESET;
2656 }
2657
2658 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
2659 {
2660         struct be_adapter *adapter = pci_get_drvdata(pdev);
2661         int status;
2662
2663         dev_info(&adapter->pdev->dev, "EEH reset\n");
2664         adapter->eeh_err = false;
2665
2666         status = pci_enable_device(pdev);
2667         if (status)
2668                 return PCI_ERS_RESULT_DISCONNECT;
2669
2670         pci_set_master(pdev);
2671         pci_set_power_state(pdev, 0);
2672         pci_restore_state(pdev);
2673
2674         /* Check if card is ok and fw is ready */
2675         status = be_cmd_POST(adapter);
2676         if (status)
2677                 return PCI_ERS_RESULT_DISCONNECT;
2678
2679         return PCI_ERS_RESULT_RECOVERED;
2680 }
2681
2682 static void be_eeh_resume(struct pci_dev *pdev)
2683 {
2684         int status = 0;
2685         struct be_adapter *adapter = pci_get_drvdata(pdev);
2686         struct net_device *netdev =  adapter->netdev;
2687
2688         dev_info(&adapter->pdev->dev, "EEH resume\n");
2689
2690         pci_save_state(pdev);
2691
2692         /* tell fw we're ready to fire cmds */
2693         status = be_cmd_fw_init(adapter);
2694         if (status)
2695                 goto err;
2696
2697         status = be_setup(adapter);
2698         if (status)
2699                 goto err;
2700
2701         if (netif_running(netdev)) {
2702                 status = be_open(netdev);
2703                 if (status)
2704                         goto err;
2705         }
2706         netif_device_attach(netdev);
2707         return;
2708 err:
2709         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
2710 }
2711
2712 static struct pci_error_handlers be_eeh_handlers = {
2713         .error_detected = be_eeh_err_detected,
2714         .slot_reset = be_eeh_reset,
2715         .resume = be_eeh_resume,
2716 };
2717
2718 static struct pci_driver be_driver = {
2719         .name = DRV_NAME,
2720         .id_table = be_dev_ids,
2721         .probe = be_probe,
2722         .remove = be_remove,
2723         .suspend = be_suspend,
2724         .resume = be_resume,
2725         .shutdown = be_shutdown,
2726         .err_handler = &be_eeh_handlers
2727 };
2728
2729 static int __init be_init_module(void)
2730 {
2731         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
2732             rx_frag_size != 2048) {
2733                 printk(KERN_WARNING DRV_NAME
2734                         " : Module param rx_frag_size must be 2048/4096/8192."
2735                         " Using 2048\n");
2736                 rx_frag_size = 2048;
2737         }
2738
2739         if (num_vfs > 32) {
2740                 printk(KERN_WARNING DRV_NAME
2741                         " : Module param num_vfs must not be greater than 32."
2742                         "Using 32\n");
2743                 num_vfs = 32;
2744         }
2745
2746         return pci_register_driver(&be_driver);
2747 }
2748 module_init(be_init_module);
2749
2750 static void __exit be_exit_module(void)
2751 {
2752         pci_unregister_driver(&be_driver);
2753 }
2754 module_exit(be_exit_module);