drivers/net/ethernet/emulex/benet/be_main.c

   1 /*
   2  * Copyright (C) 2005 - 2013 Emulex
   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@emulex.com
  12  *
  13  * Emulex
  14  * 3333 Susan Street
  15  * Costa Mesa, CA 92626
  16  */
  17
  18 #include <linux/prefetch.h>
  19 #include <linux/module.h>
  20 #include "be.h"
  21 #include "be_cmds.h"
  22 #include <asm/div64.h>
  23 #include <linux/aer.h>
  24 #include <linux/if_bridge.h>
  25 #include <net/busy_poll.h>
  26
  27 MODULE_VERSION(DRV_VER);
  28 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  29 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
  30 MODULE_AUTHOR("Emulex Corporation");
  31 MODULE_LICENSE("GPL");
  32
  33 static unsigned int num_vfs;
  34 module_param(num_vfs, uint, S_IRUGO);
  35 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
  36
  37 static ushort rx_frag_size = 2048;
  38 module_param(rx_frag_size, ushort, S_IRUGO);
  39 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
  40
  41 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
  42         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
  43         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
  44         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
  45         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
  46         { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
  47         { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
  48         { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
  49         { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
  50         { 0 }
  51 };
  52 MODULE_DEVICE_TABLE(pci, be_dev_ids);
  53 /* UE Status Low CSR */
  54 static const char * const ue_status_low_desc[] = {
  55         "CEV",
  56         "CTX",
  57         "DBUF",
  58         "ERX",
  59         "Host",
  60         "MPU",
  61         "NDMA",
  62         "PTC ",
  63         "RDMA ",
  64         "RXF ",
  65         "RXIPS ",
  66         "RXULP0 ",
  67         "RXULP1 ",
  68         "RXULP2 ",
  69         "TIM ",
  70         "TPOST ",
  71         "TPRE ",
  72         "TXIPS ",
  73         "TXULP0 ",
  74         "TXULP1 ",
  75         "UC ",
  76         "WDMA ",
  77         "TXULP2 ",
  78         "HOST1 ",
  79         "P0_OB_LINK ",
  80         "P1_OB_LINK ",
  81         "HOST_GPIO ",
  82         "MBOX ",
  83         "AXGMAC0",
  84         "AXGMAC1",
  85         "JTAG",
  86         "MPU_INTPEND"
  87 };
  88 /* UE Status High CSR */
  89 static const char * const ue_status_hi_desc[] = {
  90         "LPCMEMHOST",
  91         "MGMT_MAC",
  92         "PCS0ONLINE",
  93         "MPU_IRAM",
  94         "PCS1ONLINE",
  95         "PCTL0",
  96         "PCTL1",
  97         "PMEM",
  98         "RR",
  99         "TXPB",
 100         "RXPP",
 101         "XAUI",
 102         "TXP",
 103         "ARM",
 104         "IPC",
 105         "HOST2",
 106         "HOST3",
 107         "HOST4",
 108         "HOST5",
 109         "HOST6",
 110         "HOST7",
 111         "HOST8",
 112         "HOST9",
 113         "NETC",
 114         "Unknown",
 115         "Unknown",
 116         "Unknown",
 117         "Unknown",
 118         "Unknown",
 119         "Unknown",
 120         "Unknown",
 121         "Unknown"
 122 };
 123
 124 /* Is BE in a multi-channel mode */
 125 static inline bool be_is_mc(struct be_adapter *adapter) {
 126         return (adapter->function_mode & FLEX10_MODE ||
 127                 adapter->function_mode & VNIC_MODE ||
 128                 adapter->function_mode & UMC_ENABLED);
 129 }
 130
 131 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
 132 {
 133         struct be_dma_mem *mem = &q->dma_mem;
 134         if (mem->va) {
 135                 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
 136                                   mem->dma);
 137                 mem->va = NULL;
 138         }
 139 }
 140
 141 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
 142                 u16 len, u16 entry_size)
 143 {
 144         struct be_dma_mem *mem = &q->dma_mem;
 145
 146         memset(q, 0, sizeof(*q));
 147         q->len = len;
 148         q->entry_size = entry_size;
 149         mem->size = len * entry_size;
 150         mem->va = dma_zalloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma,
 151                                       GFP_KERNEL);
 152         if (!mem->va)
 153                 return -ENOMEM;
 154         return 0;
 155 }
 156
 157 static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
 158 {
 159         u32 reg, enabled;
 160
 161         pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
 162                                 &reg);
 163         enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
 164
 165         if (!enabled && enable)
 166                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
 167         else if (enabled && !enable)
 168                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
 169         else
 170                 return;
 171
 172         pci_write_config_dword(adapter->pdev,
 173                         PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
 174 }
 175
 176 static void be_intr_set(struct be_adapter *adapter, bool enable)
 177 {
 178         int status = 0;
 179
 180         /* On lancer interrupts can't be controlled via this register */
 181         if (lancer_chip(adapter))
 182                 return;
 183
 184         if (adapter->eeh_error)
 185                 return;
 186
 187         status = be_cmd_intr_set(adapter, enable);
 188         if (status)
 189                 be_reg_intr_set(adapter, enable);
 190 }
 191
 192 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
 193 {
 194         u32 val = 0;
 195         val |= qid & DB_RQ_RING_ID_MASK;
 196         val |= posted << DB_RQ_NUM_POSTED_SHIFT;
 197
 198         wmb();
 199         iowrite32(val, adapter->db + DB_RQ_OFFSET);
 200 }
 201
 202 static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
 203                           u16 posted)
 204 {
 205         u32 val = 0;
 206         val |= txo->q.id & DB_TXULP_RING_ID_MASK;
 207         val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
 208
 209         wmb();
 210         iowrite32(val, adapter->db + txo->db_offset);
 211 }
 212
 213 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
 214                 bool arm, bool clear_int, u16 num_popped)
 215 {
 216         u32 val = 0;
 217         val |= qid & DB_EQ_RING_ID_MASK;
 218         val |= ((qid & DB_EQ_RING_ID_EXT_MASK) <<
 219                         DB_EQ_RING_ID_EXT_MASK_SHIFT);
 220
 221         if (adapter->eeh_error)
 222                 return;
 223
 224         if (arm)
 225                 val |= 1 << DB_EQ_REARM_SHIFT;
 226         if (clear_int)
 227                 val |= 1 << DB_EQ_CLR_SHIFT;
 228         val |= 1 << DB_EQ_EVNT_SHIFT;
 229         val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
 230         iowrite32(val, adapter->db + DB_EQ_OFFSET);
 231 }
 232
 233 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
 234 {
 235         u32 val = 0;
 236         val |= qid & DB_CQ_RING_ID_MASK;
 237         val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
 238                         DB_CQ_RING_ID_EXT_MASK_SHIFT);
 239
 240         if (adapter->eeh_error)
 241                 return;
 242
 243         if (arm)
 244                 val |= 1 << DB_CQ_REARM_SHIFT;
 245         val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
 246         iowrite32(val, adapter->db + DB_CQ_OFFSET);
 247 }
 248
 249 static int be_mac_addr_set(struct net_device *netdev, void *p)
 250 {
 251         struct be_adapter *adapter = netdev_priv(netdev);
 252         struct device *dev = &adapter->pdev->dev;
 253         struct sockaddr *addr = p;
 254         int status;
 255         u8 mac[ETH_ALEN];
 256         u32 old_pmac_id = adapter->pmac_id[0], curr_pmac_id = 0;
 257
 258         if (!is_valid_ether_addr(addr->sa_data))
 259                 return -EADDRNOTAVAIL;
 260
 261         /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
 262          * privilege or if PF did not provision the new MAC address.
 263          * On BE3, this cmd will always fail if the VF doesn't have the
 264          * FILTMGMT privilege. This failure is OK, only if the PF programmed
 265          * the MAC for the VF.
 266          */
 267         status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
 268                                  adapter->if_handle, &adapter->pmac_id[0], 0);
 269         if (!status) {
 270                 curr_pmac_id = adapter->pmac_id[0];
 271
 272                 /* Delete the old programmed MAC. This call may fail if the
 273                  * old MAC was already deleted by the PF driver.
 274                  */
 275                 if (adapter->pmac_id[0] != old_pmac_id)
 276                         be_cmd_pmac_del(adapter, adapter->if_handle,
 277                                         old_pmac_id, 0);
 278         }
 279
 280         /* Decide if the new MAC is successfully activated only after
 281          * querying the FW
 282          */
 283         status = be_cmd_get_active_mac(adapter, curr_pmac_id, mac);
 284         if (status)
 285                 goto err;
 286
 287         /* The MAC change did not happen, either due to lack of privilege
 288          * or PF didn't pre-provision.
 289          */
 290         if (memcmp(addr->sa_data, mac, ETH_ALEN)) {
 291                 status = -EPERM;
 292                 goto err;
 293         }
 294
 295         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 296         dev_info(dev, "MAC address changed to %pM\n", mac);
 297         return 0;
 298 err:
 299         dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
 300         return status;
 301 }
 302
 303 /* BE2 supports only v0 cmd */
 304 static void *hw_stats_from_cmd(struct be_adapter *adapter)
 305 {
 306         if (BE2_chip(adapter)) {
 307                 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
 308
 309                 return &cmd->hw_stats;
 310         } else if (BE3_chip(adapter)) {
 311                 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
 312
 313                 return &cmd->hw_stats;
 314         } else {
 315                 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
 316
 317                 return &cmd->hw_stats;
 318         }
 319 }
 320
 321 /* BE2 supports only v0 cmd */
 322 static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
 323 {
 324         if (BE2_chip(adapter)) {
 325                 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
 326
 327                 return &hw_stats->erx;
 328         } else if (BE3_chip(adapter)) {
 329                 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
 330
 331                 return &hw_stats->erx;
 332         } else {
 333                 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
 334
 335                 return &hw_stats->erx;
 336         }
 337 }
 338
 339 static void populate_be_v0_stats(struct be_adapter *adapter)
 340 {
 341         struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
 342         struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
 343         struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
 344         struct be_port_rxf_stats_v0 *port_stats =
 345                                         &rxf_stats->port[adapter->port_num];
 346         struct be_drv_stats *drvs = &adapter->drv_stats;
 347
 348         be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
 349         drvs->rx_pause_frames = port_stats->rx_pause_frames;
 350         drvs->rx_crc_errors = port_stats->rx_crc_errors;
 351         drvs->rx_control_frames = port_stats->rx_control_frames;
 352         drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
 353         drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
 354         drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
 355         drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
 356         drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
 357         drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
 358         drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
 359         drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
 360         drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
 361         drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
 362         drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
 363         drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
 364         drvs->rx_dropped_header_too_small =
 365                 port_stats->rx_dropped_header_too_small;
 366         drvs->rx_address_filtered =
 367                                         port_stats->rx_address_filtered +
 368                                         port_stats->rx_vlan_filtered;
 369         drvs->rx_alignment_symbol_errors =
 370                 port_stats->rx_alignment_symbol_errors;
 371
 372         drvs->tx_pauseframes = port_stats->tx_pauseframes;
 373         drvs->tx_controlframes = port_stats->tx_controlframes;
 374
 375         if (adapter->port_num)
 376                 drvs->jabber_events = rxf_stats->port1_jabber_events;
 377         else
 378                 drvs->jabber_events = rxf_stats->port0_jabber_events;
 379         drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
 380         drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
 381         drvs->forwarded_packets = rxf_stats->forwarded_packets;
 382         drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
 383         drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
 384         drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
 385         adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
 386 }
 387
 388 static void populate_be_v1_stats(struct be_adapter *adapter)
 389 {
 390         struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
 391         struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
 392         struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
 393         struct be_port_rxf_stats_v1 *port_stats =
 394                                         &rxf_stats->port[adapter->port_num];
 395         struct be_drv_stats *drvs = &adapter->drv_stats;
 396
 397         be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
 398         drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
 399         drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
 400         drvs->rx_pause_frames = port_stats->rx_pause_frames;
 401         drvs->rx_crc_errors = port_stats->rx_crc_errors;
 402         drvs->rx_control_frames = port_stats->rx_control_frames;
 403         drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
 404         drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
 405         drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
 406         drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
 407         drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
 408         drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
 409         drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
 410         drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
 411         drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
 412         drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
 413         drvs->rx_dropped_header_too_small =
 414                 port_stats->rx_dropped_header_too_small;
 415         drvs->rx_input_fifo_overflow_drop =
 416                 port_stats->rx_input_fifo_overflow_drop;
 417         drvs->rx_address_filtered = port_stats->rx_address_filtered;
 418         drvs->rx_alignment_symbol_errors =
 419                 port_stats->rx_alignment_symbol_errors;
 420         drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
 421         drvs->tx_pauseframes = port_stats->tx_pauseframes;
 422         drvs->tx_controlframes = port_stats->tx_controlframes;
 423         drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
 424         drvs->jabber_events = port_stats->jabber_events;
 425         drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
 426         drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
 427         drvs->forwarded_packets = rxf_stats->forwarded_packets;
 428         drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
 429         drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
 430         drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
 431         adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
 432 }
 433
 434 static void populate_be_v2_stats(struct be_adapter *adapter)
 435 {
 436         struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
 437         struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
 438         struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
 439         struct be_port_rxf_stats_v2 *port_stats =
 440                                         &rxf_stats->port[adapter->port_num];
 441         struct be_drv_stats *drvs = &adapter->drv_stats;
 442
 443         be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
 444         drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
 445         drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
 446         drvs->rx_pause_frames = port_stats->rx_pause_frames;
 447         drvs->rx_crc_errors = port_stats->rx_crc_errors;
 448         drvs->rx_control_frames = port_stats->rx_control_frames;
 449         drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
 450         drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
 451         drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
 452         drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
 453         drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
 454         drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
 455         drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
 456         drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
 457         drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
 458         drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
 459         drvs->rx_dropped_header_too_small =
 460                 port_stats->rx_dropped_header_too_small;
 461         drvs->rx_input_fifo_overflow_drop =
 462                 port_stats->rx_input_fifo_overflow_drop;
 463         drvs->rx_address_filtered = port_stats->rx_address_filtered;
 464         drvs->rx_alignment_symbol_errors =
 465                 port_stats->rx_alignment_symbol_errors;
 466         drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
 467         drvs->tx_pauseframes = port_stats->tx_pauseframes;
 468         drvs->tx_controlframes = port_stats->tx_controlframes;
 469         drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
 470         drvs->jabber_events = port_stats->jabber_events;
 471         drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
 472         drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
 473         drvs->forwarded_packets = rxf_stats->forwarded_packets;
 474         drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
 475         drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
 476         drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
 477         adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
 478         if (be_roce_supported(adapter))  {
 479                 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
 480                 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
 481                 drvs->rx_roce_frames = port_stats->roce_frames_received;
 482                 drvs->roce_drops_crc = port_stats->roce_drops_crc;
 483                 drvs->roce_drops_payload_len =
 484                         port_stats->roce_drops_payload_len;
 485         }
 486 }
 487
 488 static void populate_lancer_stats(struct be_adapter *adapter)
 489 {
 490
 491         struct be_drv_stats *drvs = &adapter->drv_stats;
 492         struct lancer_pport_stats *pport_stats =
 493                                         pport_stats_from_cmd(adapter);
 494
 495         be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
 496         drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
 497         drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
 498         drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
 499         drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
 500         drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
 501         drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
 502         drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
 503         drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
 504         drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
 505         drvs->rx_dropped_tcp_length =
 506                                 pport_stats->rx_dropped_invalid_tcp_length;
 507         drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
 508         drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
 509         drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
 510         drvs->rx_dropped_header_too_small =
 511                                 pport_stats->rx_dropped_header_too_small;
 512         drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
 513         drvs->rx_address_filtered =
 514                                         pport_stats->rx_address_filtered +
 515                                         pport_stats->rx_vlan_filtered;
 516         drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
 517         drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
 518         drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
 519         drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
 520         drvs->jabber_events = pport_stats->rx_jabbers;
 521         drvs->forwarded_packets = pport_stats->num_forwards_lo;
 522         drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
 523         drvs->rx_drops_too_many_frags =
 524                                 pport_stats->rx_drops_too_many_frags_lo;
 525 }
 526
 527 static void accumulate_16bit_val(u32 *acc, u16 val)
 528 {
 529 #define lo(x)                   (x & 0xFFFF)
 530 #define hi(x)                   (x & 0xFFFF0000)
 531         bool wrapped = val < lo(*acc);
 532         u32 newacc = hi(*acc) + val;
 533
 534         if (wrapped)
 535                 newacc += 65536;
 536         ACCESS_ONCE(*acc) = newacc;
 537 }
 538
 539 static void populate_erx_stats(struct be_adapter *adapter,
 540                         struct be_rx_obj *rxo,
 541                         u32 erx_stat)
 542 {
 543         if (!BEx_chip(adapter))
 544                 rx_stats(rxo)->rx_drops_no_frags = erx_stat;
 545         else
 546                 /* below erx HW counter can actually wrap around after
 547                  * 65535. Driver accumulates a 32-bit value
 548                  */
 549                 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
 550                                      (u16)erx_stat);
 551 }
 552
 553 void be_parse_stats(struct be_adapter *adapter)
 554 {
 555         struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
 556         struct be_rx_obj *rxo;
 557         int i;
 558         u32 erx_stat;
 559
 560         if (lancer_chip(adapter)) {
 561                 populate_lancer_stats(adapter);
 562         } else {
 563                 if (BE2_chip(adapter))
 564                         populate_be_v0_stats(adapter);
 565                 else if (BE3_chip(adapter))
 566                         /* for BE3 */
 567                         populate_be_v1_stats(adapter);
 568                 else
 569                         populate_be_v2_stats(adapter);
 570
 571                 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
 572                 for_all_rx_queues(adapter, rxo, i) {
 573                         erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
 574                         populate_erx_stats(adapter, rxo, erx_stat);
 575                 }
 576         }
 577 }
 578
 579 static struct rtnl_link_stats64 *be_get_stats64(struct net_device *netdev,
 580                                         struct rtnl_link_stats64 *stats)
 581 {
 582         struct be_adapter *adapter = netdev_priv(netdev);
 583         struct be_drv_stats *drvs = &adapter->drv_stats;
 584         struct be_rx_obj *rxo;
 585         struct be_tx_obj *txo;
 586         u64 pkts, bytes;
 587         unsigned int start;
 588         int i;
 589
 590         for_all_rx_queues(adapter, rxo, i) {
 591                 const struct be_rx_stats *rx_stats = rx_stats(rxo);
 592                 do {
 593                         start = u64_stats_fetch_begin_bh(&rx_stats->sync);
 594                         pkts = rx_stats(rxo)->rx_pkts;
 595                         bytes = rx_stats(rxo)->rx_bytes;
 596                 } while (u64_stats_fetch_retry_bh(&rx_stats->sync, start));
 597                 stats->rx_packets += pkts;
 598                 stats->rx_bytes += bytes;
 599                 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
 600                 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
 601                                         rx_stats(rxo)->rx_drops_no_frags;
 602         }
 603
 604         for_all_tx_queues(adapter, txo, i) {
 605                 const struct be_tx_stats *tx_stats = tx_stats(txo);
 606                 do {
 607                         start = u64_stats_fetch_begin_bh(&tx_stats->sync);
 608                         pkts = tx_stats(txo)->tx_pkts;
 609                         bytes = tx_stats(txo)->tx_bytes;
 610                 } while (u64_stats_fetch_retry_bh(&tx_stats->sync, start));
 611                 stats->tx_packets += pkts;
 612                 stats->tx_bytes += bytes;
 613         }
 614
 615         /* bad pkts received */
 616         stats->rx_errors = drvs->rx_crc_errors +
 617                 drvs->rx_alignment_symbol_errors +
 618                 drvs->rx_in_range_errors +
 619                 drvs->rx_out_range_errors +
 620                 drvs->rx_frame_too_long +
 621                 drvs->rx_dropped_too_small +
 622                 drvs->rx_dropped_too_short +
 623                 drvs->rx_dropped_header_too_small +
 624                 drvs->rx_dropped_tcp_length +
 625                 drvs->rx_dropped_runt;
 626
 627         /* detailed rx errors */
 628         stats->rx_length_errors = drvs->rx_in_range_errors +
 629                 drvs->rx_out_range_errors +
 630                 drvs->rx_frame_too_long;
 631
 632         stats->rx_crc_errors = drvs->rx_crc_errors;
 633
 634         /* frame alignment errors */
 635         stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
 636
 637         /* receiver fifo overrun */
 638         /* drops_no_pbuf is no per i/f, it's per BE card */
 639         stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
 640                                 drvs->rx_input_fifo_overflow_drop +
 641                                 drvs->rx_drops_no_pbuf;
 642         return stats;
 643 }
 644
 645 void be_link_status_update(struct be_adapter *adapter, u8 link_status)
 646 {
 647         struct net_device *netdev = adapter->netdev;
 648
 649         if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
 650                 netif_carrier_off(netdev);
 651                 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
 652         }
 653
 654         if ((link_status & LINK_STATUS_MASK) == LINK_UP)
 655                 netif_carrier_on(netdev);
 656         else
 657                 netif_carrier_off(netdev);
 658 }
 659
 660 static void be_tx_stats_update(struct be_tx_obj *txo,
 661                         u32 wrb_cnt, u32 copied, u32 gso_segs, bool stopped)
 662 {
 663         struct be_tx_stats *stats = tx_stats(txo);
 664
 665         u64_stats_update_begin(&stats->sync);
 666         stats->tx_reqs++;
 667         stats->tx_wrbs += wrb_cnt;
 668         stats->tx_bytes += copied;
 669         stats->tx_pkts += (gso_segs ? gso_segs : 1);
 670         if (stopped)
 671                 stats->tx_stops++;
 672         u64_stats_update_end(&stats->sync);
 673 }
 674
 675 /* Determine number of WRB entries needed to xmit data in an skb */
 676 static u32 wrb_cnt_for_skb(struct be_adapter *adapter, struct sk_buff *skb,
 677                                                                 bool *dummy)
 678 {
 679         int cnt = (skb->len > skb->data_len);
 680
 681         cnt += skb_shinfo(skb)->nr_frags;
 682
 683         /* to account for hdr wrb */
 684         cnt++;
 685         if (lancer_chip(adapter) || !(cnt & 1)) {
 686                 *dummy = false;
 687         } else {
 688                 /* add a dummy to make it an even num */
 689                 cnt++;
 690                 *dummy = true;
 691         }
 692         BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
 693         return cnt;
 694 }
 695
 696 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
 697 {
 698         wrb->frag_pa_hi = upper_32_bits(addr);
 699         wrb->frag_pa_lo = addr & 0xFFFFFFFF;
 700         wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
 701         wrb->rsvd0 = 0;
 702 }
 703
 704 static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
 705                                         struct sk_buff *skb)
 706 {
 707         u8 vlan_prio;
 708         u16 vlan_tag;
 709
 710         vlan_tag = vlan_tx_tag_get(skb);
 711         vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
 712         /* If vlan priority provided by OS is NOT in available bmap */
 713         if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
 714                 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
 715                                 adapter->recommended_prio;
 716
 717         return vlan_tag;
 718 }
 719
 720 static void wrb_fill_hdr(struct be_adapter *adapter, struct be_eth_hdr_wrb *hdr,
 721                 struct sk_buff *skb, u32 wrb_cnt, u32 len, bool skip_hw_vlan)
 722 {
 723         u16 vlan_tag;
 724
 725         memset(hdr, 0, sizeof(*hdr));
 726
 727         AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
 728
 729         if (skb_is_gso(skb)) {
 730                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
 731                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
 732                         hdr, skb_shinfo(skb)->gso_size);
 733                 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
 734                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso6, hdr, 1);
 735         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
 736                 if (is_tcp_pkt(skb))
 737                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
 738                 else if (is_udp_pkt(skb))
 739                         AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
 740         }
 741
 742         if (vlan_tx_tag_present(skb)) {
 743                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
 744                 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
 745                 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag, hdr, vlan_tag);
 746         }
 747
 748         /* To skip HW VLAN tagging: evt = 1, compl = 0 */
 749         AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, !skip_hw_vlan);
 750         AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
 751         AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
 752         AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
 753 }
 754
 755 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
 756                 bool unmap_single)
 757 {
 758         dma_addr_t dma;
 759
 760         be_dws_le_to_cpu(wrb, sizeof(*wrb));
 761
 762         dma = (u64)wrb->frag_pa_hi << 32 | (u64)wrb->frag_pa_lo;
 763         if (wrb->frag_len) {
 764                 if (unmap_single)
 765                         dma_unmap_single(dev, dma, wrb->frag_len,
 766                                          DMA_TO_DEVICE);
 767                 else
 768                         dma_unmap_page(dev, dma, wrb->frag_len, DMA_TO_DEVICE);
 769         }
 770 }
 771
 772 static int make_tx_wrbs(struct be_adapter *adapter, struct be_queue_info *txq,
 773                 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb,
 774                 bool skip_hw_vlan)
 775 {
 776         dma_addr_t busaddr;
 777         int i, copied = 0;
 778         struct device *dev = &adapter->pdev->dev;
 779         struct sk_buff *first_skb = skb;
 780         struct be_eth_wrb *wrb;
 781         struct be_eth_hdr_wrb *hdr;
 782         bool map_single = false;
 783         u16 map_head;
 784
 785         hdr = queue_head_node(txq);
 786         queue_head_inc(txq);
 787         map_head = txq->head;
 788
 789         if (skb->len > skb->data_len) {
 790                 int len = skb_headlen(skb);
 791                 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
 792                 if (dma_mapping_error(dev, busaddr))
 793                         goto dma_err;
 794                 map_single = true;
 795                 wrb = queue_head_node(txq);
 796                 wrb_fill(wrb, busaddr, len);
 797                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 798                 queue_head_inc(txq);
 799                 copied += len;
 800         }
 801
 802         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 803                 const struct skb_frag_struct *frag =
 804                         &skb_shinfo(skb)->frags[i];
 805                 busaddr = skb_frag_dma_map(dev, frag, 0,
 806                                            skb_frag_size(frag), DMA_TO_DEVICE);
 807                 if (dma_mapping_error(dev, busaddr))
 808                         goto dma_err;
 809                 wrb = queue_head_node(txq);
 810                 wrb_fill(wrb, busaddr, skb_frag_size(frag));
 811                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 812                 queue_head_inc(txq);
 813                 copied += skb_frag_size(frag);
 814         }
 815
 816         if (dummy_wrb) {
 817                 wrb = queue_head_node(txq);
 818                 wrb_fill(wrb, 0, 0);
 819                 be_dws_cpu_to_le(wrb, sizeof(*wrb));
 820                 queue_head_inc(txq);
 821         }
 822
 823         wrb_fill_hdr(adapter, hdr, first_skb, wrb_cnt, copied, skip_hw_vlan);
 824         be_dws_cpu_to_le(hdr, sizeof(*hdr));
 825
 826         return copied;
 827 dma_err:
 828         txq->head = map_head;
 829         while (copied) {
 830                 wrb = queue_head_node(txq);
 831                 unmap_tx_frag(dev, wrb, map_single);
 832                 map_single = false;
 833                 copied -= wrb->frag_len;
 834                 queue_head_inc(txq);
 835         }
 836         return 0;
 837 }
 838
 839 static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
 840                                              struct sk_buff *skb,
 841                                              bool *skip_hw_vlan)
 842 {
 843         u16 vlan_tag = 0;
 844
 845         skb = skb_share_check(skb, GFP_ATOMIC);
 846         if (unlikely(!skb))
 847                 return skb;
 848
 849         if (vlan_tx_tag_present(skb))
 850                 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
 851
 852         if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
 853                 if (!vlan_tag)
 854                         vlan_tag = adapter->pvid;
 855                 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
 856                  * skip VLAN insertion
 857                  */
 858                 if (skip_hw_vlan)
 859                         *skip_hw_vlan = true;
 860         }
 861
 862         if (vlan_tag) {
 863                 skb = __vlan_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 864                 if (unlikely(!skb))
 865                         return skb;
 866                 skb->vlan_tci = 0;
 867         }
 868
 869         /* Insert the outer VLAN, if any */
 870         if (adapter->qnq_vid) {
 871                 vlan_tag = adapter->qnq_vid;
 872                 skb = __vlan_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 873                 if (unlikely(!skb))
 874                         return skb;
 875                 if (skip_hw_vlan)
 876                         *skip_hw_vlan = true;
 877         }
 878
 879         return skb;
 880 }
 881
 882 static bool be_ipv6_exthdr_check(struct sk_buff *skb)
 883 {
 884         struct ethhdr *eh = (struct ethhdr *)skb->data;
 885         u16 offset = ETH_HLEN;
 886
 887         if (eh->h_proto == htons(ETH_P_IPV6)) {
 888                 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
 889
 890                 offset += sizeof(struct ipv6hdr);
 891                 if (ip6h->nexthdr != NEXTHDR_TCP &&
 892                     ip6h->nexthdr != NEXTHDR_UDP) {
 893                         struct ipv6_opt_hdr *ehdr =
 894                                 (struct ipv6_opt_hdr *) (skb->data + offset);
 895
 896                         /* offending pkt: 2nd byte following IPv6 hdr is 0xff */
 897                         if (ehdr->hdrlen == 0xff)
 898                                 return true;
 899                 }
 900         }
 901         return false;
 902 }
 903
 904 static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
 905 {
 906         return vlan_tx_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
 907 }
 908
 909 static int be_ipv6_tx_stall_chk(struct be_adapter *adapter,
 910                                 struct sk_buff *skb)
 911 {
 912         return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
 913 }
 914
 915 static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
 916                                            struct sk_buff *skb,
 917                                            bool *skip_hw_vlan)
 918 {
 919         struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
 920         unsigned int eth_hdr_len;
 921         struct iphdr *ip;
 922
 923         /* Lancer, SH-R ASICs have a bug wherein Packets that are 32 bytes or less
 924          * may cause a transmit stall on that port. So the work-around is to
 925          * pad short packets (<= 32 bytes) to a 36-byte length.
 926          */
 927         if (unlikely(!BEx_chip(adapter) && skb->len <= 32)) {
 928                 if (skb_padto(skb, 36))
 929                         goto tx_drop;
 930                 skb->len = 36;
 931         }
 932
 933         /* For padded packets, BE HW modifies tot_len field in IP header
 934          * incorrecly when VLAN tag is inserted by HW.
 935          * For padded packets, Lancer computes incorrect checksum.
 936          */
 937         eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
 938                                                 VLAN_ETH_HLEN : ETH_HLEN;
 939         if (skb->len <= 60 &&
 940             (lancer_chip(adapter) || vlan_tx_tag_present(skb)) &&
 941             is_ipv4_pkt(skb)) {
 942                 ip = (struct iphdr *)ip_hdr(skb);
 943                 pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
 944         }
 945
 946         /* If vlan tag is already inlined in the packet, skip HW VLAN
 947          * tagging in UMC mode
 948          */
 949         if ((adapter->function_mode & UMC_ENABLED) &&
 950             veh->h_vlan_proto == htons(ETH_P_8021Q))
 951                         *skip_hw_vlan = true;
 952
 953         /* HW has a bug wherein it will calculate CSUM for VLAN
 954          * pkts even though it is disabled.
 955          * Manually insert VLAN in pkt.
 956          */
 957         if (skb->ip_summed != CHECKSUM_PARTIAL &&
 958             vlan_tx_tag_present(skb)) {
 959                 skb = be_insert_vlan_in_pkt(adapter, skb, skip_hw_vlan);
 960                 if (unlikely(!skb))
 961                         goto tx_drop;
 962         }
 963
 964         /* HW may lockup when VLAN HW tagging is requested on
 965          * certain ipv6 packets. Drop such pkts if the HW workaround to
 966          * skip HW tagging is not enabled by FW.
 967          */
 968         if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&
 969             (adapter->pvid || adapter->qnq_vid) &&
 970             !qnq_async_evt_rcvd(adapter)))
 971                 goto tx_drop;
 972
 973         /* Manual VLAN tag insertion to prevent:
 974          * ASIC lockup when the ASIC inserts VLAN tag into
 975          * certain ipv6 packets. Insert VLAN tags in driver,
 976          * and set event, completion, vlan bits accordingly
 977          * in the Tx WRB.
 978          */
 979         if (be_ipv6_tx_stall_chk(adapter, skb) &&
 980             be_vlan_tag_tx_chk(adapter, skb)) {
 981                 skb = be_insert_vlan_in_pkt(adapter, skb, skip_hw_vlan);
 982                 if (unlikely(!skb))
 983                         goto tx_drop;
 984         }
 985
 986         return skb;
 987 tx_drop:
 988         dev_kfree_skb_any(skb);
 989         return NULL;
 990 }
 991
 992 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
 993 {
 994         struct be_adapter *adapter = netdev_priv(netdev);
 995         struct be_tx_obj *txo = &adapter->tx_obj[skb_get_queue_mapping(skb)];
 996         struct be_queue_info *txq = &txo->q;
 997         bool dummy_wrb, stopped = false;
 998         u32 wrb_cnt = 0, copied = 0;
 999         bool skip_hw_vlan = false;
1000         u32 start = txq->head;
1001
1002         skb = be_xmit_workarounds(adapter, skb, &skip_hw_vlan);
1003         if (!skb) {
1004                 tx_stats(txo)->tx_drv_drops++;
1005                 return NETDEV_TX_OK;
1006         }
1007
1008         wrb_cnt = wrb_cnt_for_skb(adapter, skb, &dummy_wrb);
1009
1010         copied = make_tx_wrbs(adapter, txq, skb, wrb_cnt, dummy_wrb,
1011                               skip_hw_vlan);
1012         if (copied) {
1013                 int gso_segs = skb_shinfo(skb)->gso_segs;
1014
1015                 /* record the sent skb in the sent_skb table */
1016                 BUG_ON(txo->sent_skb_list[start]);
1017                 txo->sent_skb_list[start] = skb;
1018
1019                 /* Ensure txq has space for the next skb; Else stop the queue
1020                  * *BEFORE* ringing the tx doorbell, so that we serialze the
1021                  * tx compls of the current transmit which'll wake up the queue
1022                  */
1023                 atomic_add(wrb_cnt, &txq->used);
1024                 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
1025                                                                 txq->len) {
1026                         netif_stop_subqueue(netdev, skb_get_queue_mapping(skb));
1027                         stopped = true;
1028                 }
1029
1030                 be_txq_notify(adapter, txo, wrb_cnt);
1031
1032                 be_tx_stats_update(txo, wrb_cnt, copied, gso_segs, stopped);
1033         } else {
1034                 txq->head = start;
1035                 tx_stats(txo)->tx_drv_drops++;
1036                 dev_kfree_skb_any(skb);
1037         }
1038         return NETDEV_TX_OK;
1039 }
1040
1041 static int be_change_mtu(struct net_device *netdev, int new_mtu)
1042 {
1043         struct be_adapter *adapter = netdev_priv(netdev);
1044         if (new_mtu < BE_MIN_MTU ||
1045                         new_mtu > (BE_MAX_JUMBO_FRAME_SIZE -
1046                                         (ETH_HLEN + ETH_FCS_LEN))) {
1047                 dev_info(&adapter->pdev->dev,
1048                         "MTU must be between %d and %d bytes\n",
1049                         BE_MIN_MTU,
1050                         (BE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN)));
1051                 return -EINVAL;
1052         }
1053         dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
1054                         netdev->mtu, new_mtu);
1055         netdev->mtu = new_mtu;
1056         return 0;
1057 }
1058
1059 /*
1060  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1061  * If the user configures more, place BE in vlan promiscuous mode.
1062  */
1063 static int be_vid_config(struct be_adapter *adapter)
1064 {
1065         u16 vids[BE_NUM_VLANS_SUPPORTED];
1066         u16 num = 0, i;
1067         int status = 0;
1068
1069         /* No need to further configure vids if in promiscuous mode */
1070         if (adapter->promiscuous)
1071                 return 0;
1072
1073         if (adapter->vlans_added > be_max_vlans(adapter))
1074                 goto set_vlan_promisc;
1075
1076         /* Construct VLAN Table to give to HW */
1077         for (i = 0; i < VLAN_N_VID; i++)
1078                 if (adapter->vlan_tag[i])
1079                         vids[num++] = cpu_to_le16(i);
1080
1081         status = be_cmd_vlan_config(adapter, adapter->if_handle,
1082                                     vids, num, 0);
1083
1084         if (status) {
1085                 /* Set to VLAN promisc mode as setting VLAN filter failed */
1086                 if (status == MCC_ADDL_STS_INSUFFICIENT_RESOURCES)
1087                         goto set_vlan_promisc;
1088                 dev_err(&adapter->pdev->dev,
1089                         "Setting HW VLAN filtering failed.\n");
1090         } else {
1091                 if (adapter->flags & BE_FLAGS_VLAN_PROMISC) {
1092                         /* hw VLAN filtering re-enabled. */
1093                         status = be_cmd_rx_filter(adapter,
1094                                                   BE_FLAGS_VLAN_PROMISC, OFF);
1095                         if (!status) {
1096                                 dev_info(&adapter->pdev->dev,
1097                                          "Disabling VLAN Promiscuous mode.\n");
1098                                 adapter->flags &= ~BE_FLAGS_VLAN_PROMISC;
1099                                 dev_info(&adapter->pdev->dev,
1100                                          "Re-Enabling HW VLAN filtering\n");
1101                         }
1102                 }
1103         }
1104
1105         return status;
1106
1107 set_vlan_promisc:
1108         dev_warn(&adapter->pdev->dev, "Exhausted VLAN HW filters.\n");
1109
1110         status = be_cmd_rx_filter(adapter, BE_FLAGS_VLAN_PROMISC, ON);
1111         if (!status) {
1112                 dev_info(&adapter->pdev->dev, "Enable VLAN Promiscuous mode\n");
1113                 dev_info(&adapter->pdev->dev, "Disabling HW VLAN filtering\n");
1114                 adapter->flags |= BE_FLAGS_VLAN_PROMISC;
1115         } else
1116                 dev_err(&adapter->pdev->dev,
1117                         "Failed to enable VLAN Promiscuous mode.\n");
1118         return status;
1119 }
1120
1121 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1122 {
1123         struct be_adapter *adapter = netdev_priv(netdev);
1124         int status = 0;
1125
1126
1127         /* Packets with VID 0 are always received by Lancer by default */
1128         if (lancer_chip(adapter) && vid == 0)
1129                 goto ret;
1130
1131         adapter->vlan_tag[vid] = 1;
1132         if (adapter->vlans_added <= (be_max_vlans(adapter) + 1))
1133                 status = be_vid_config(adapter);
1134
1135         if (!status)
1136                 adapter->vlans_added++;
1137         else
1138                 adapter->vlan_tag[vid] = 0;
1139 ret:
1140         return status;
1141 }
1142
1143 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1144 {
1145         struct be_adapter *adapter = netdev_priv(netdev);
1146         int status = 0;
1147
1148         /* Packets with VID 0 are always received by Lancer by default */
1149         if (lancer_chip(adapter) && vid == 0)
1150                 goto ret;
1151
1152         adapter->vlan_tag[vid] = 0;
1153         if (adapter->vlans_added <= be_max_vlans(adapter))
1154                 status = be_vid_config(adapter);
1155
1156         if (!status)
1157                 adapter->vlans_added--;
1158         else
1159                 adapter->vlan_tag[vid] = 1;
1160 ret:
1161         return status;
1162 }
1163
1164 static void be_set_rx_mode(struct net_device *netdev)
1165 {
1166         struct be_adapter *adapter = netdev_priv(netdev);
1167         int status;
1168
1169         if (netdev->flags & IFF_PROMISC) {
1170                 be_cmd_rx_filter(adapter, IFF_PROMISC, ON);
1171                 adapter->promiscuous = true;
1172                 goto done;
1173         }
1174
1175         /* BE was previously in promiscuous mode; disable it */
1176         if (adapter->promiscuous) {
1177                 adapter->promiscuous = false;
1178                 be_cmd_rx_filter(adapter, IFF_PROMISC, OFF);
1179
1180                 if (adapter->vlans_added)
1181                         be_vid_config(adapter);
1182         }
1183
1184         /* Enable multicast promisc if num configured exceeds what we support */
1185         if (netdev->flags & IFF_ALLMULTI ||
1186             netdev_mc_count(netdev) > be_max_mc(adapter)) {
1187                 be_cmd_rx_filter(adapter, IFF_ALLMULTI, ON);
1188                 goto done;
1189         }
1190
1191         if (netdev_uc_count(netdev) != adapter->uc_macs) {
1192                 struct netdev_hw_addr *ha;
1193                 int i = 1; /* First slot is claimed by the Primary MAC */
1194
1195                 for (; adapter->uc_macs > 0; adapter->uc_macs--, i++) {
1196                         be_cmd_pmac_del(adapter, adapter->if_handle,
1197                                         adapter->pmac_id[i], 0);
1198                 }
1199
1200                 if (netdev_uc_count(netdev) > be_max_uc(adapter)) {
1201                         be_cmd_rx_filter(adapter, IFF_PROMISC, ON);
1202                         adapter->promiscuous = true;
1203                         goto done;
1204                 }
1205
1206                 netdev_for_each_uc_addr(ha, adapter->netdev) {
1207                         adapter->uc_macs++; /* First slot is for Primary MAC */
1208                         be_cmd_pmac_add(adapter, (u8 *)ha->addr,
1209                                         adapter->if_handle,
1210                                         &adapter->pmac_id[adapter->uc_macs], 0);
1211                 }
1212         }
1213
1214         status = be_cmd_rx_filter(adapter, IFF_MULTICAST, ON);
1215
1216         /* Set to MCAST promisc mode if setting MULTICAST address fails */
1217         if (status) {
1218                 dev_info(&adapter->pdev->dev, "Exhausted multicast HW filters.\n");
1219                 dev_info(&adapter->pdev->dev, "Disabling HW multicast filtering.\n");
1220                 be_cmd_rx_filter(adapter, IFF_ALLMULTI, ON);
1221         }
1222 done:
1223         return;
1224 }
1225
1226 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1227 {
1228         struct be_adapter *adapter = netdev_priv(netdev);
1229         struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1230         int status;
1231
1232         if (!sriov_enabled(adapter))
1233                 return -EPERM;
1234
1235         if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1236                 return -EINVAL;
1237
1238         if (BEx_chip(adapter)) {
1239                 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1240                                 vf + 1);
1241
1242                 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1243                                          &vf_cfg->pmac_id, vf + 1);
1244         } else {
1245                 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1246                                         vf + 1);
1247         }
1248
1249         if (status)
1250                 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed\n",
1251                                 mac, vf);
1252         else
1253                 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
1254
1255         return status;
1256 }
1257
1258 static int be_get_vf_config(struct net_device *netdev, int vf,
1259                         struct ifla_vf_info *vi)
1260 {
1261         struct be_adapter *adapter = netdev_priv(netdev);
1262         struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1263
1264         if (!sriov_enabled(adapter))
1265                 return -EPERM;
1266
1267         if (vf >= adapter->num_vfs)
1268                 return -EINVAL;
1269
1270         vi->vf = vf;
1271         vi->tx_rate = vf_cfg->tx_rate;
1272         vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1273         vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1274         memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1275
1276         return 0;
1277 }
1278
1279 static int be_set_vf_vlan(struct net_device *netdev,
1280                         int vf, u16 vlan, u8 qos)
1281 {
1282         struct be_adapter *adapter = netdev_priv(netdev);
1283         struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1284         int status = 0;
1285
1286         if (!sriov_enabled(adapter))
1287                 return -EPERM;
1288
1289         if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1290                 return -EINVAL;
1291
1292         if (vlan || qos) {
1293                 vlan |= qos << VLAN_PRIO_SHIFT;
1294                 if (vf_cfg->vlan_tag != vlan) {
1295                         /* If this is new value, program it. Else skip. */
1296                         vf_cfg->vlan_tag = vlan;
1297                         status = be_cmd_set_hsw_config(adapter, vlan, vf + 1,
1298                                                        vf_cfg->if_handle, 0);
1299                 }
1300         } else {
1301                 /* Reset Transparent Vlan Tagging. */
1302                 vf_cfg->vlan_tag = 0;
1303                 vlan = vf_cfg->def_vid;
1304                 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1,
1305                                                vf_cfg->if_handle, 0);
1306         }
1307
1308
1309         if (status)
1310                 dev_info(&adapter->pdev->dev,
1311                                 "VLAN %d config on VF %d failed\n", vlan, vf);
1312         return status;
1313 }
1314
1315 static int be_set_vf_tx_rate(struct net_device *netdev,
1316                         int vf, int rate)
1317 {
1318         struct be_adapter *adapter = netdev_priv(netdev);
1319         int status = 0;
1320
1321         if (!sriov_enabled(adapter))
1322                 return -EPERM;
1323
1324         if (vf >= adapter->num_vfs)
1325                 return -EINVAL;
1326
1327         if (rate < 100 || rate > 10000) {
1328                 dev_err(&adapter->pdev->dev,
1329                         "tx rate must be between 100 and 10000 Mbps\n");
1330                 return -EINVAL;
1331         }
1332
1333         if (lancer_chip(adapter))
1334                 status = be_cmd_set_profile_config(adapter, rate / 10, vf + 1);
1335         else
1336                 status = be_cmd_set_qos(adapter, rate / 10, vf + 1);
1337
1338         if (status)
1339                 dev_err(&adapter->pdev->dev,
1340                                 "tx rate %d on VF %d failed\n", rate, vf);
1341         else
1342                 adapter->vf_cfg[vf].tx_rate = rate;
1343         return status;
1344 }
1345
1346 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
1347                           ulong now)
1348 {
1349         aic->rx_pkts_prev = rx_pkts;
1350         aic->tx_reqs_prev = tx_pkts;
1351         aic->jiffies = now;
1352 }
1353
1354 static void be_eqd_update(struct be_adapter *adapter)
1355 {
1356         struct be_set_eqd set_eqd[MAX_EVT_QS];
1357         int eqd, i, num = 0, start;
1358         struct be_aic_obj *aic;
1359         struct be_eq_obj *eqo;
1360         struct be_rx_obj *rxo;
1361         struct be_tx_obj *txo;
1362         u64 rx_pkts, tx_pkts;
1363         ulong now;
1364         u32 pps, delta;
1365
1366         for_all_evt_queues(adapter, eqo, i) {
1367                 aic = &adapter->aic_obj[eqo->idx];
1368                 if (!aic->enable) {
1369                         if (aic->jiffies)
1370                                 aic->jiffies = 0;
1371                         eqd = aic->et_eqd;
1372                         goto modify_eqd;
1373                 }
1374
1375                 rxo = &adapter->rx_obj[eqo->idx];
1376                 do {
1377                         start = u64_stats_fetch_begin_bh(&rxo->stats.sync);
1378                         rx_pkts = rxo->stats.rx_pkts;
1379                 } while (u64_stats_fetch_retry_bh(&rxo->stats.sync, start));
1380
1381                 txo = &adapter->tx_obj[eqo->idx];
1382                 do {
1383                         start = u64_stats_fetch_begin_bh(&txo->stats.sync);
1384                         tx_pkts = txo->stats.tx_reqs;
1385                 } while (u64_stats_fetch_retry_bh(&txo->stats.sync, start));
1386
1387
1388                 /* Skip, if wrapped around or first calculation */
1389                 now = jiffies;
1390                 if (!aic->jiffies || time_before(now, aic->jiffies) ||
1391                     rx_pkts < aic->rx_pkts_prev ||
1392                     tx_pkts < aic->tx_reqs_prev) {
1393                         be_aic_update(aic, rx_pkts, tx_pkts, now);
1394                         continue;
1395                 }
1396
1397                 delta = jiffies_to_msecs(now - aic->jiffies);
1398                 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
1399                         (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
1400                 eqd = (pps / 15000) << 2;
1401
1402                 if (eqd < 8)
1403                         eqd = 0;
1404                 eqd = min_t(u32, eqd, aic->max_eqd);
1405                 eqd = max_t(u32, eqd, aic->min_eqd);
1406
1407                 be_aic_update(aic, rx_pkts, tx_pkts, now);
1408 modify_eqd:
1409                 if (eqd != aic->prev_eqd) {
1410                         set_eqd[num].delay_multiplier = (eqd * 65)/100;
1411                         set_eqd[num].eq_id = eqo->q.id;
1412                         aic->prev_eqd = eqd;
1413                         num++;
1414                 }
1415         }
1416
1417         if (num)
1418                 be_cmd_modify_eqd(adapter, set_eqd, num);
1419 }
1420
1421 static void be_rx_stats_update(struct be_rx_obj *rxo,
1422                 struct be_rx_compl_info *rxcp)
1423 {
1424         struct be_rx_stats *stats = rx_stats(rxo);
1425
1426         u64_stats_update_begin(&stats->sync);
1427         stats->rx_compl++;
1428         stats->rx_bytes += rxcp->pkt_size;
1429         stats->rx_pkts++;
1430         if (rxcp->pkt_type == BE_MULTICAST_PACKET)
1431                 stats->rx_mcast_pkts++;
1432         if (rxcp->err)
1433                 stats->rx_compl_err++;
1434         u64_stats_update_end(&stats->sync);
1435 }
1436
1437 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
1438 {
1439         /* L4 checksum is not reliable for non TCP/UDP packets.
1440          * Also ignore ipcksm for ipv6 pkts */
1441         return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
1442                                 (rxcp->ip_csum || rxcp->ipv6);
1443 }
1444
1445 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo,
1446                                                 u16 frag_idx)
1447 {
1448         struct be_adapter *adapter = rxo->adapter;
1449         struct be_rx_page_info *rx_page_info;
1450         struct be_queue_info *rxq = &rxo->q;
1451
1452         rx_page_info = &rxo->page_info_tbl[frag_idx];
1453         BUG_ON(!rx_page_info->page);
1454
1455         if (rx_page_info->last_page_user) {
1456                 dma_unmap_page(&adapter->pdev->dev,
1457                                dma_unmap_addr(rx_page_info, bus),
1458                                adapter->big_page_size, DMA_FROM_DEVICE);
1459                 rx_page_info->last_page_user = false;
1460         }
1461
1462         atomic_dec(&rxq->used);
1463         return rx_page_info;
1464 }
1465
1466 /* Throwaway the data in the Rx completion */
1467 static void be_rx_compl_discard(struct be_rx_obj *rxo,
1468                                 struct be_rx_compl_info *rxcp)
1469 {
1470         struct be_queue_info *rxq = &rxo->q;
1471         struct be_rx_page_info *page_info;
1472         u16 i, num_rcvd = rxcp->num_rcvd;
1473
1474         for (i = 0; i < num_rcvd; i++) {
1475                 page_info = get_rx_page_info(rxo, rxcp->rxq_idx);
1476                 put_page(page_info->page);
1477                 memset(page_info, 0, sizeof(*page_info));
1478                 index_inc(&rxcp->rxq_idx, rxq->len);
1479         }
1480 }
1481
1482 /*
1483  * skb_fill_rx_data forms a complete skb for an ether frame
1484  * indicated by rxcp.
1485  */
1486 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
1487                              struct be_rx_compl_info *rxcp)
1488 {
1489         struct be_queue_info *rxq = &rxo->q;
1490         struct be_rx_page_info *page_info;
1491         u16 i, j;
1492         u16 hdr_len, curr_frag_len, remaining;
1493         u8 *start;
1494
1495         page_info = get_rx_page_info(rxo, rxcp->rxq_idx);
1496         start = page_address(page_info->page) + page_info->page_offset;
1497         prefetch(start);
1498
1499         /* Copy data in the first descriptor of this completion */
1500         curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
1501
1502         skb->len = curr_frag_len;
1503         if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
1504                 memcpy(skb->data, start, curr_frag_len);
1505                 /* Complete packet has now been moved to data */
1506                 put_page(page_info->page);
1507                 skb->data_len = 0;
1508                 skb->tail += curr_frag_len;
1509         } else {
1510                 hdr_len = ETH_HLEN;
1511                 memcpy(skb->data, start, hdr_len);
1512                 skb_shinfo(skb)->nr_frags = 1;
1513                 skb_frag_set_page(skb, 0, page_info->page);
1514                 skb_shinfo(skb)->frags[0].page_offset =
1515                                         page_info->page_offset + hdr_len;
1516                 skb_frag_size_set(&skb_shinfo(skb)->frags[0], curr_frag_len - hdr_len);
1517                 skb->data_len = curr_frag_len - hdr_len;
1518                 skb->truesize += rx_frag_size;
1519                 skb->tail += hdr_len;
1520         }
1521         page_info->page = NULL;
1522
1523         if (rxcp->pkt_size <= rx_frag_size) {
1524                 BUG_ON(rxcp->num_rcvd != 1);
1525                 return;
1526         }
1527
1528         /* More frags present for this completion */
1529         index_inc(&rxcp->rxq_idx, rxq->len);
1530         remaining = rxcp->pkt_size - curr_frag_len;
1531         for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
1532                 page_info = get_rx_page_info(rxo, rxcp->rxq_idx);
1533                 curr_frag_len = min(remaining, rx_frag_size);
1534
1535                 /* Coalesce all frags from the same physical page in one slot */
1536                 if (page_info->page_offset == 0) {
1537                         /* Fresh page */
1538                         j++;
1539                         skb_frag_set_page(skb, j, page_info->page);
1540                         skb_shinfo(skb)->frags[j].page_offset =
1541                                                         page_info->page_offset;
1542                         skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
1543                         skb_shinfo(skb)->nr_frags++;
1544                 } else {
1545                         put_page(page_info->page);
1546                 }
1547
1548                 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
1549                 skb->len += curr_frag_len;
1550                 skb->data_len += curr_frag_len;
1551                 skb->truesize += rx_frag_size;
1552                 remaining -= curr_frag_len;
1553                 index_inc(&rxcp->rxq_idx, rxq->len);
1554                 page_info->page = NULL;
1555         }
1556         BUG_ON(j > MAX_SKB_FRAGS);
1557 }
1558
1559 /* Process the RX completion indicated by rxcp when GRO is disabled */
1560 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
1561                                 struct be_rx_compl_info *rxcp)
1562 {
1563         struct be_adapter *adapter = rxo->adapter;
1564         struct net_device *netdev = adapter->netdev;
1565         struct sk_buff *skb;
1566
1567         skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
1568         if (unlikely(!skb)) {
1569                 rx_stats(rxo)->rx_drops_no_skbs++;
1570                 be_rx_compl_discard(rxo, rxcp);
1571                 return;
1572         }
1573
1574         skb_fill_rx_data(rxo, skb, rxcp);
1575
1576         if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
1577                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1578         else
1579                 skb_checksum_none_assert(skb);
1580
1581         skb->protocol = eth_type_trans(skb, netdev);
1582         skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
1583         if (netdev->features & NETIF_F_RXHASH)
1584                 skb->rxhash = rxcp->rss_hash;
1585         skb_mark_napi_id(skb, napi);
1586
1587         if (rxcp->vlanf)
1588                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
1589
1590         netif_receive_skb(skb);
1591 }
1592
1593 /* Process the RX completion indicated by rxcp when GRO is enabled */
1594 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
1595                                     struct napi_struct *napi,
1596                                     struct be_rx_compl_info *rxcp)
1597 {
1598         struct be_adapter *adapter = rxo->adapter;
1599         struct be_rx_page_info *page_info;
1600         struct sk_buff *skb = NULL;
1601         struct be_queue_info *rxq = &rxo->q;
1602         u16 remaining, curr_frag_len;
1603         u16 i, j;
1604
1605         skb = napi_get_frags(napi);
1606         if (!skb) {
1607                 be_rx_compl_discard(rxo, rxcp);
1608                 return;
1609         }
1610
1611         remaining = rxcp->pkt_size;
1612         for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
1613                 page_info = get_rx_page_info(rxo, rxcp->rxq_idx);
1614
1615                 curr_frag_len = min(remaining, rx_frag_size);
1616
1617                 /* Coalesce all frags from the same physical page in one slot */
1618                 if (i == 0 || page_info->page_offset == 0) {
1619                         /* First frag or Fresh page */
1620                         j++;
1621                         skb_frag_set_page(skb, j, page_info->page);
1622                         skb_shinfo(skb)->frags[j].page_offset =
1623                                                         page_info->page_offset;
1624                         skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
1625                 } else {
1626                         put_page(page_info->page);
1627                 }
1628                 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
1629                 skb->truesize += rx_frag_size;
1630                 remaining -= curr_frag_len;
1631                 index_inc(&rxcp->rxq_idx, rxq->len);
1632                 memset(page_info, 0, sizeof(*page_info));
1633         }
1634         BUG_ON(j > MAX_SKB_FRAGS);
1635
1636         skb_shinfo(skb)->nr_frags = j + 1;
1637         skb->len = rxcp->pkt_size;
1638         skb->data_len = rxcp->pkt_size;
1639         skb->ip_summed = CHECKSUM_UNNECESSARY;
1640         skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
1641         if (adapter->netdev->features & NETIF_F_RXHASH)
1642                 skb->rxhash = rxcp->rss_hash;
1643         skb_mark_napi_id(skb, napi);
1644
1645         if (rxcp->vlanf)
1646                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
1647
1648         napi_gro_frags(napi);
1649 }
1650
1651 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
1652                                  struct be_rx_compl_info *rxcp)
1653 {
1654         rxcp->pkt_size =
1655                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, pktsize, compl);
1656         rxcp->vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vtp, compl);
1657         rxcp->err = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, err, compl);
1658         rxcp->tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, tcpf, compl);
1659         rxcp->udpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, udpf, compl);
1660         rxcp->ip_csum =
1661                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, ipcksm, compl);
1662         rxcp->l4_csum =
1663                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, l4_cksm, compl);
1664         rxcp->ipv6 =
1665                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, ip_version, compl);
1666         rxcp->rxq_idx =
1667                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, fragndx, compl);
1668         rxcp->num_rcvd =
1669                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, numfrags, compl);
1670         rxcp->pkt_type =
1671                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, cast_enc, compl);
1672         rxcp->rss_hash =
1673                 AMAP_GET_BITS(struct amap_eth_rx_compl_v1, rsshash, compl);
1674         if (rxcp->vlanf) {
1675                 rxcp->vtm = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vtm,
1676                                           compl);
1677                 rxcp->vlan_tag = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vlan_tag,
1678                                                compl);
1679         }
1680         rxcp->port = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, port, compl);
1681 }
1682
1683 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
1684                                  struct be_rx_compl_info *rxcp)
1685 {
1686         rxcp->pkt_size =
1687                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, pktsize, compl);
1688         rxcp->vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vtp, compl);
1689         rxcp->err = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, err, compl);
1690         rxcp->tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, tcpf, compl);
1691         rxcp->udpf = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, udpf, compl);
1692         rxcp->ip_csum =
1693                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, ipcksm, compl);
1694         rxcp->l4_csum =
1695                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, l4_cksm, compl);
1696         rxcp->ipv6 =
1697                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, ip_version, compl);
1698         rxcp->rxq_idx =
1699                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, fragndx, compl);
1700         rxcp->num_rcvd =
1701                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, numfrags, compl);
1702         rxcp->pkt_type =
1703                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, cast_enc, compl);
1704         rxcp->rss_hash =
1705                 AMAP_GET_BITS(struct amap_eth_rx_compl_v0, rsshash, compl);
1706         if (rxcp->vlanf) {
1707                 rxcp->vtm = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vtm,
1708                                           compl);
1709                 rxcp->vlan_tag = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vlan_tag,
1710                                                compl);
1711         }
1712         rxcp->port = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, port, compl);
1713         rxcp->ip_frag = AMAP_GET_BITS(struct amap_eth_rx_compl_v0,
1714                                       ip_frag, compl);
1715 }
1716
1717 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
1718 {
1719         struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
1720         struct be_rx_compl_info *rxcp = &rxo->rxcp;
1721         struct be_adapter *adapter = rxo->adapter;
1722
1723         /* For checking the valid bit it is Ok to use either definition as the
1724          * valid bit is at the same position in both v0 and v1 Rx compl */
1725         if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
1726                 return NULL;
1727
1728         rmb();
1729         be_dws_le_to_cpu(compl, sizeof(*compl));
1730
1731         if (adapter->be3_native)
1732                 be_parse_rx_compl_v1(compl, rxcp);
1733         else
1734                 be_parse_rx_compl_v0(compl, rxcp);
1735
1736         if (rxcp->ip_frag)
1737                 rxcp->l4_csum = 0;
1738
1739         if (rxcp->vlanf) {
1740                 /* vlanf could be wrongly set in some cards.
1741                  * ignore if vtm is not set */
1742                 if ((adapter->function_mode & FLEX10_MODE) && !rxcp->vtm)
1743                         rxcp->vlanf = 0;
1744
1745                 if (!lancer_chip(adapter))
1746                         rxcp->vlan_tag = swab16(rxcp->vlan_tag);
1747
1748                 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
1749                     !adapter->vlan_tag[rxcp->vlan_tag])
1750                         rxcp->vlanf = 0;
1751         }
1752
1753         /* As the compl has been parsed, reset it; we wont touch it again */
1754         compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
1755
1756         queue_tail_inc(&rxo->cq);
1757         return rxcp;
1758 }
1759
1760 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
1761 {
1762         u32 order = get_order(size);
1763
1764         if (order > 0)
1765                 gfp |= __GFP_COMP;
1766         return  alloc_pages(gfp, order);
1767 }
1768
1769 /*
1770  * Allocate a page, split it to fragments of size rx_frag_size and post as
1771  * receive buffers to BE
1772  */
1773 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp)
1774 {
1775         struct be_adapter *adapter = rxo->adapter;
1776         struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
1777         struct be_queue_info *rxq = &rxo->q;
1778         struct page *pagep = NULL;
1779         struct be_eth_rx_d *rxd;
1780         u64 page_dmaaddr = 0, frag_dmaaddr;
1781         u32 posted, page_offset = 0;
1782
1783         page_info = &rxo->page_info_tbl[rxq->head];
1784         for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
1785                 if (!pagep) {
1786                         pagep = be_alloc_pages(adapter->big_page_size, gfp);
1787                         if (unlikely(!pagep)) {
1788                                 rx_stats(rxo)->rx_post_fail++;
1789                                 break;
1790                         }
1791                         page_dmaaddr = dma_map_page(&adapter->pdev->dev, pagep,
1792                                                     0, adapter->big_page_size,
1793                                                     DMA_FROM_DEVICE);
1794                         page_info->page_offset = 0;
1795                 } else {
1796                         get_page(pagep);
1797                         page_info->page_offset = page_offset + rx_frag_size;
1798                 }
1799                 page_offset = page_info->page_offset;
1800                 page_info->page = pagep;
1801                 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
1802                 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
1803
1804                 rxd = queue_head_node(rxq);
1805                 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
1806                 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
1807
1808                 /* Any space left in the current big page for another frag? */
1809                 if ((page_offset + rx_frag_size + rx_frag_size) >
1810                                         adapter->big_page_size) {
1811                         pagep = NULL;
1812                         page_info->last_page_user = true;
1813                 }
1814
1815                 prev_page_info = page_info;
1816                 queue_head_inc(rxq);
1817                 page_info = &rxo->page_info_tbl[rxq->head];
1818         }
1819         if (pagep)
1820                 prev_page_info->last_page_user = true;
1821
1822         if (posted) {
1823                 atomic_add(posted, &rxq->used);
1824                 if (rxo->rx_post_starved)
1825                         rxo->rx_post_starved = false;
1826                 be_rxq_notify(adapter, rxq->id, posted);
1827         } else if (atomic_read(&rxq->used) == 0) {
1828                 /* Let be_worker replenish when memory is available */
1829                 rxo->rx_post_starved = true;
1830         }
1831 }
1832
1833 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
1834 {
1835         struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
1836
1837         if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
1838                 return NULL;
1839
1840         rmb();
1841         be_dws_le_to_cpu(txcp, sizeof(*txcp));
1842
1843         txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
1844
1845         queue_tail_inc(tx_cq);
1846         return txcp;
1847 }
1848
1849 static u16 be_tx_compl_process(struct be_adapter *adapter,
1850                 struct be_tx_obj *txo, u16 last_index)
1851 {
1852         struct be_queue_info *txq = &txo->q;
1853         struct be_eth_wrb *wrb;
1854         struct sk_buff **sent_skbs = txo->sent_skb_list;
1855         struct sk_buff *sent_skb;
1856         u16 cur_index, num_wrbs = 1; /* account for hdr wrb */
1857         bool unmap_skb_hdr = true;
1858
1859         sent_skb = sent_skbs[txq->tail];
1860         BUG_ON(!sent_skb);
1861         sent_skbs[txq->tail] = NULL;
1862
1863         /* skip header wrb */
1864         queue_tail_inc(txq);
1865
1866         do {
1867                 cur_index = txq->tail;
1868                 wrb = queue_tail_node(txq);
1869                 unmap_tx_frag(&adapter->pdev->dev, wrb,
1870                               (unmap_skb_hdr && skb_headlen(sent_skb)));
1871                 unmap_skb_hdr = false;
1872
1873                 num_wrbs++;
1874                 queue_tail_inc(txq);
1875         } while (cur_index != last_index);
1876
1877         kfree_skb(sent_skb);
1878         return num_wrbs;
1879 }
1880
1881 /* Return the number of events in the event queue */
1882 static inline int events_get(struct be_eq_obj *eqo)
1883 {
1884         struct be_eq_entry *eqe;
1885         int num = 0;
1886
1887         do {
1888                 eqe = queue_tail_node(&eqo->q);
1889                 if (eqe->evt == 0)
1890                         break;
1891
1892                 rmb();
1893                 eqe->evt = 0;
1894                 num++;
1895                 queue_tail_inc(&eqo->q);
1896         } while (true);
1897
1898         return num;
1899 }
1900
1901 /* Leaves the EQ is disarmed state */
1902 static void be_eq_clean(struct be_eq_obj *eqo)
1903 {
1904         int num = events_get(eqo);
1905
1906         be_eq_notify(eqo->adapter, eqo->q.id, false, true, num);
1907 }
1908
1909 static void be_rx_cq_clean(struct be_rx_obj *rxo)
1910 {
1911         struct be_rx_page_info *page_info;
1912         struct be_queue_info *rxq = &rxo->q;
1913         struct be_queue_info *rx_cq = &rxo->cq;
1914         struct be_rx_compl_info *rxcp;
1915         struct be_adapter *adapter = rxo->adapter;
1916         int flush_wait = 0;
1917         u16 tail;
1918
1919         /* Consume pending rx completions.
1920          * Wait for the flush completion (identified by zero num_rcvd)
1921          * to arrive. Notify CQ even when there are no more CQ entries
1922          * for HW to flush partially coalesced CQ entries.
1923          * In Lancer, there is no need to wait for flush compl.
1924          */
1925         for (;;) {
1926                 rxcp = be_rx_compl_get(rxo);
1927                 if (rxcp == NULL) {
1928                         if (lancer_chip(adapter))
1929                                 break;
1930
1931                         if (flush_wait++ > 10 || be_hw_error(adapter)) {
1932                                 dev_warn(&adapter->pdev->dev,
1933                                          "did not receive flush compl\n");
1934                                 break;
1935                         }
1936                         be_cq_notify(adapter, rx_cq->id, true, 0);
1937                         mdelay(1);
1938                 } else {
1939                         be_rx_compl_discard(rxo, rxcp);
1940                         be_cq_notify(adapter, rx_cq->id, false, 1);
1941                         if (rxcp->num_rcvd == 0)
1942                                 break;
1943                 }
1944         }
1945
1946         /* After cleanup, leave the CQ in unarmed state */
1947         be_cq_notify(adapter, rx_cq->id, false, 0);
1948
1949         /* Then free posted rx buffers that were not used */
1950         tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1951         for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1952                 page_info = get_rx_page_info(rxo, tail);
1953                 put_page(page_info->page);
1954                 memset(page_info, 0, sizeof(*page_info));
1955         }
1956         BUG_ON(atomic_read(&rxq->used));
1957         rxq->tail = rxq->head = 0;
1958 }
1959
1960 static void be_tx_compl_clean(struct be_adapter *adapter)
1961 {
1962         struct be_tx_obj *txo;
1963         struct be_queue_info *txq;
1964         struct be_eth_tx_compl *txcp;
1965         u16 end_idx, cmpl = 0, timeo = 0, num_wrbs = 0;
1966         struct sk_buff *sent_skb;
1967         bool dummy_wrb;
1968         int i, pending_txqs;
1969
1970         /* Wait for a max of 200ms for all the tx-completions to arrive. */
1971         do {
1972                 pending_txqs = adapter->num_tx_qs;
1973
1974                 for_all_tx_queues(adapter, txo, i) {
1975                         txq = &txo->q;
1976                         while ((txcp = be_tx_compl_get(&txo->cq))) {
1977                                 end_idx =
1978                                         AMAP_GET_BITS(struct amap_eth_tx_compl,
1979                                                       wrb_index, txcp);
1980                                 num_wrbs += be_tx_compl_process(adapter, txo,
1981                                                                 end_idx);
1982                                 cmpl++;
1983                         }
1984                         if (cmpl) {
1985                                 be_cq_notify(adapter, txo->cq.id, false, cmpl);
1986                                 atomic_sub(num_wrbs, &txq->used);
1987                                 cmpl = 0;
1988                                 num_wrbs = 0;
1989                         }
1990                         if (atomic_read(&txq->used) == 0)
1991                                 pending_txqs--;
1992                 }
1993
1994                 if (pending_txqs == 0 || ++timeo > 200)
1995                         break;
1996
1997                 mdelay(1);
1998         } while (true);
1999
2000         for_all_tx_queues(adapter, txo, i) {
2001                 txq = &txo->q;
2002                 if (atomic_read(&txq->used))
2003                         dev_err(&adapter->pdev->dev, "%d pending tx-compls\n",
2004                                 atomic_read(&txq->used));
2005
2006                 /* free posted tx for which compls will never arrive */
2007                 while (atomic_read(&txq->used)) {
2008                         sent_skb = txo->sent_skb_list[txq->tail];
2009                         end_idx = txq->tail;
2010                         num_wrbs = wrb_cnt_for_skb(adapter, sent_skb,
2011                                                    &dummy_wrb);
2012                         index_adv(&end_idx, num_wrbs - 1, txq->len);
2013                         num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2014                         atomic_sub(num_wrbs, &txq->used);
2015                 }
2016         }
2017 }
2018
2019 static void be_evt_queues_destroy(struct be_adapter *adapter)
2020 {
2021         struct be_eq_obj *eqo;
2022         int i;
2023
2024         for_all_evt_queues(adapter, eqo, i) {
2025                 if (eqo->q.created) {
2026                         be_eq_clean(eqo);
2027                         be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2028                         napi_hash_del(&eqo->napi);
2029                         netif_napi_del(&eqo->napi);
2030                 }
2031                 be_queue_free(adapter, &eqo->q);
2032         }
2033 }
2034
2035 static int be_evt_queues_create(struct be_adapter *adapter)
2036 {
2037         struct be_queue_info *eq;
2038         struct be_eq_obj *eqo;
2039         struct be_aic_obj *aic;
2040         int i, rc;
2041
2042         adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2043                                     adapter->cfg_num_qs);
2044
2045         for_all_evt_queues(adapter, eqo, i) {
2046                 netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
2047                                BE_NAPI_WEIGHT);
2048                 napi_hash_add(&eqo->napi);
2049                 aic = &adapter->aic_obj[i];
2050                 eqo->adapter = adapter;
2051                 eqo->tx_budget = BE_TX_BUDGET;
2052                 eqo->idx = i;
2053                 aic->max_eqd = BE_MAX_EQD;
2054                 aic->enable = true;
2055
2056                 eq = &eqo->q;
2057                 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2058                                         sizeof(struct be_eq_entry));
2059                 if (rc)
2060                         return rc;
2061
2062                 rc = be_cmd_eq_create(adapter, eqo);
2063                 if (rc)
2064                         return rc;
2065         }
2066         return 0;
2067 }
2068
2069 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2070 {
2071         struct be_queue_info *q;
2072
2073         q = &adapter->mcc_obj.q;
2074         if (q->created)
2075                 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2076         be_queue_free(adapter, q);
2077
2078         q = &adapter->mcc_obj.cq;
2079         if (q->created)
2080                 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2081         be_queue_free(adapter, q);
2082 }
2083
2084 /* Must be called only after TX qs are created as MCC shares TX EQ */
2085 static int be_mcc_queues_create(struct be_adapter *adapter)
2086 {
2087         struct be_queue_info *q, *cq;
2088
2089         cq = &adapter->mcc_obj.cq;
2090         if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
2091                         sizeof(struct be_mcc_compl)))
2092                 goto err;
2093
2094         /* Use the default EQ for MCC completions */
2095         if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
2096                 goto mcc_cq_free;
2097
2098         q = &adapter->mcc_obj.q;
2099         if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
2100                 goto mcc_cq_destroy;
2101
2102         if (be_cmd_mccq_create(adapter, q, cq))
2103                 goto mcc_q_free;
2104
2105         return 0;
2106
2107 mcc_q_free:
2108         be_queue_free(adapter, q);
2109 mcc_cq_destroy:
2110         be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
2111 mcc_cq_free:
2112         be_queue_free(adapter, cq);
2113 err:
2114         return -1;
2115 }
2116
2117 static void be_tx_queues_destroy(struct be_adapter *adapter)
2118 {
2119         struct be_queue_info *q;
2120         struct be_tx_obj *txo;
2121         u8 i;
2122
2123         for_all_tx_queues(adapter, txo, i) {
2124                 q = &txo->q;
2125                 if (q->created)
2126                         be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
2127                 be_queue_free(adapter, q);
2128
2129                 q = &txo->cq;
2130                 if (q->created)
2131                         be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2132                 be_queue_free(adapter, q);
2133         }
2134 }
2135
2136 static int be_tx_qs_create(struct be_adapter *adapter)
2137 {
2138         struct be_queue_info *cq, *eq;
2139         struct be_tx_obj *txo;
2140         int status, i;
2141
2142         adapter->num_tx_qs = min(adapter->num_evt_qs, be_max_txqs(adapter));
2143
2144         for_all_tx_queues(adapter, txo, i) {
2145                 cq = &txo->cq;
2146                 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
2147                                         sizeof(struct be_eth_tx_compl));
2148                 if (status)
2149                         return status;
2150
2151                 u64_stats_init(&txo->stats.sync);
2152                 u64_stats_init(&txo->stats.sync_compl);
2153
2154                 /* If num_evt_qs is less than num_tx_qs, then more than
2155                  * one txq share an eq
2156                  */
2157                 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
2158                 status = be_cmd_cq_create(adapter, cq, eq, false, 3);
2159                 if (status)
2160                         return status;
2161
2162                 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
2163                                         sizeof(struct be_eth_wrb));
2164                 if (status)
2165                         return status;
2166
2167                 status = be_cmd_txq_create(adapter, txo);
2168                 if (status)
2169                         return status;
2170         }
2171
2172         dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
2173                  adapter->num_tx_qs);
2174         return 0;
2175 }
2176
2177 static void be_rx_cqs_destroy(struct be_adapter *adapter)
2178 {
2179         struct be_queue_info *q;
2180         struct be_rx_obj *rxo;
2181         int i;
2182
2183         for_all_rx_queues(adapter, rxo, i) {
2184                 q = &rxo->cq;
2185                 if (q->created)
2186                         be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2187                 be_queue_free(adapter, q);
2188         }
2189 }
2190
2191 static int be_rx_cqs_create(struct be_adapter *adapter)
2192 {
2193         struct be_queue_info *eq, *cq;
2194         struct be_rx_obj *rxo;
2195         int rc, i;
2196
2197         /* We can create as many RSS rings as there are EQs. */
2198         adapter->num_rx_qs = adapter->num_evt_qs;
2199
2200         /* We'll use RSS only if atleast 2 RSS rings are supported.
2201          * When RSS is used, we'll need a default RXQ for non-IP traffic.
2202          */
2203         if (adapter->num_rx_qs > 1)
2204                 adapter->num_rx_qs++;
2205
2206         adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
2207         for_all_rx_queues(adapter, rxo, i) {
2208                 rxo->adapter = adapter;
2209                 cq = &rxo->cq;
2210                 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
2211                                 sizeof(struct be_eth_rx_compl));
2212                 if (rc)
2213                         return rc;
2214
2215                 u64_stats_init(&rxo->stats.sync);
2216                 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
2217                 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
2218                 if (rc)
2219                         return rc;
2220         }
2221
2222         dev_info(&adapter->pdev->dev,
2223                  "created %d RSS queue(s) and 1 default RX queue\n",
2224                  adapter->num_rx_qs - 1);
2225         return 0;
2226 }
2227
2228 static irqreturn_t be_intx(int irq, void *dev)
2229 {
2230         struct be_eq_obj *eqo = dev;
2231         struct be_adapter *adapter = eqo->adapter;
2232         int num_evts = 0;
2233
2234         /* IRQ is not expected when NAPI is scheduled as the EQ
2235          * will not be armed.
2236          * But, this can happen on Lancer INTx where it takes
2237          * a while to de-assert INTx or in BE2 where occasionaly
2238          * an interrupt may be raised even when EQ is unarmed.
2239          * If NAPI is already scheduled, then counting & notifying
2240          * events will orphan them.
2241          */
2242         if (napi_schedule_prep(&eqo->napi)) {
2243                 num_evts = events_get(eqo);
2244                 __napi_schedule(&eqo->napi);
2245                 if (num_evts)
2246                         eqo->spurious_intr = 0;
2247         }
2248         be_eq_notify(adapter, eqo->q.id, false, true, num_evts);
2249
2250         /* Return IRQ_HANDLED only for the the first spurious intr
2251          * after a valid intr to stop the kernel from branding
2252          * this irq as a bad one!
2253          */
2254         if (num_evts || eqo->spurious_intr++ == 0)
2255                 return IRQ_HANDLED;
2256         else
2257                 return IRQ_NONE;
2258 }
2259
2260 static irqreturn_t be_msix(int irq, void *dev)
2261 {
2262         struct be_eq_obj *eqo = dev;
2263
2264         be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0);
2265         napi_schedule(&eqo->napi);
2266         return IRQ_HANDLED;
2267 }
2268
2269 static inline bool do_gro(struct be_rx_compl_info *rxcp)
2270 {
2271         return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
2272 }
2273
2274 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
2275                         int budget, int polling)
2276 {
2277         struct be_adapter *adapter = rxo->adapter;
2278         struct be_queue_info *rx_cq = &rxo->cq;
2279         struct be_rx_compl_info *rxcp;
2280         u32 work_done;
2281
2282         for (work_done = 0; work_done < budget; work_done++) {
2283                 rxcp = be_rx_compl_get(rxo);
2284                 if (!rxcp)
2285                         break;
2286
2287                 /* Is it a flush compl that has no data */
2288                 if (unlikely(rxcp->num_rcvd == 0))
2289                         goto loop_continue;
2290
2291                 /* Discard compl with partial DMA Lancer B0 */
2292                 if (unlikely(!rxcp->pkt_size)) {
2293                         be_rx_compl_discard(rxo, rxcp);
2294                         goto loop_continue;
2295                 }
2296
2297                 /* On BE drop pkts that arrive due to imperfect filtering in
2298                  * promiscuous mode on some skews
2299                  */
2300                 if (unlikely(rxcp->port != adapter->port_num &&
2301                                 !lancer_chip(adapter))) {
2302                         be_rx_compl_discard(rxo, rxcp);
2303                         goto loop_continue;
2304                 }
2305
2306                 /* Don't do gro when we're busy_polling */
2307                 if (do_gro(rxcp) && polling != BUSY_POLLING)
2308                         be_rx_compl_process_gro(rxo, napi, rxcp);
2309                 else
2310                         be_rx_compl_process(rxo, napi, rxcp);
2311
2312 loop_continue:
2313                 be_rx_stats_update(rxo, rxcp);
2314         }
2315
2316         if (work_done) {
2317                 be_cq_notify(adapter, rx_cq->id, true, work_done);
2318
2319                 /* When an rx-obj gets into post_starved state, just
2320                  * let be_worker do the posting.
2321                  */
2322                 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
2323                     !rxo->rx_post_starved)
2324                         be_post_rx_frags(rxo, GFP_ATOMIC);
2325         }
2326
2327         return work_done;
2328 }
2329
2330 static bool be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
2331                           int budget, int idx)
2332 {
2333         struct be_eth_tx_compl *txcp;
2334         int num_wrbs = 0, work_done;
2335
2336         for (work_done = 0; work_done < budget; work_done++) {
2337                 txcp = be_tx_compl_get(&txo->cq);
2338                 if (!txcp)
2339                         break;
2340                 num_wrbs += be_tx_compl_process(adapter, txo,
2341                                 AMAP_GET_BITS(struct amap_eth_tx_compl,
2342                                         wrb_index, txcp));
2343         }
2344
2345         if (work_done) {
2346                 be_cq_notify(adapter, txo->cq.id, true, work_done);
2347                 atomic_sub(num_wrbs, &txo->q.used);
2348
2349                 /* As Tx wrbs have been freed up, wake up netdev queue
2350                  * if it was stopped due to lack of tx wrbs.  */
2351                 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
2352                         atomic_read(&txo->q.used) < txo->q.len / 2) {
2353                         netif_wake_subqueue(adapter->netdev, idx);
2354                 }
2355
2356                 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
2357                 tx_stats(txo)->tx_compl += work_done;
2358                 u64_stats_update_end(&tx_stats(txo)->sync_compl);
2359         }
2360         return (work_done < budget); /* Done */
2361 }
2362
2363 int be_poll(struct napi_struct *napi, int budget)
2364 {
2365         struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
2366         struct be_adapter *adapter = eqo->adapter;
2367         int max_work = 0, work, i, num_evts;
2368         struct be_rx_obj *rxo;
2369         bool tx_done;
2370
2371         num_evts = events_get(eqo);
2372
2373         /* Process all TXQs serviced by this EQ */
2374         for (i = eqo->idx; i < adapter->num_tx_qs; i += adapter->num_evt_qs) {
2375                 tx_done = be_process_tx(adapter, &adapter->tx_obj[i],
2376                                         eqo->tx_budget, i);
2377                 if (!tx_done)
2378                         max_work = budget;
2379         }
2380
2381         if (be_lock_napi(eqo)) {
2382                 /* This loop will iterate twice for EQ0 in which
2383                  * completions of the last RXQ (default one) are also processed
2384                  * For other EQs the loop iterates only once
2385                  */
2386                 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2387                         work = be_process_rx(rxo, napi, budget, NAPI_POLLING);
2388                         max_work = max(work, max_work);
2389                 }
2390                 be_unlock_napi(eqo);
2391         } else {
2392                 max_work = budget;
2393         }
2394
2395         if (is_mcc_eqo(eqo))
2396                 be_process_mcc(adapter);
2397
2398         if (max_work < budget) {
2399                 napi_complete(napi);
2400                 be_eq_notify(adapter, eqo->q.id, true, false, num_evts);
2401         } else {
2402                 /* As we'll continue in polling mode, count and clear events */
2403                 be_eq_notify(adapter, eqo->q.id, false, false, num_evts);
2404         }
2405         return max_work;
2406 }
2407
2408 #ifdef CONFIG_NET_RX_BUSY_POLL
2409 static int be_busy_poll(struct napi_struct *napi)
2410 {
2411         struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
2412         struct be_adapter *adapter = eqo->adapter;
2413         struct be_rx_obj *rxo;
2414         int i, work = 0;
2415
2416         if (!be_lock_busy_poll(eqo))
2417                 return LL_FLUSH_BUSY;
2418
2419         for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2420                 work = be_process_rx(rxo, napi, 4, BUSY_POLLING);
2421                 if (work)
2422                         break;
2423         }
2424
2425         be_unlock_busy_poll(eqo);
2426         return work;
2427 }
2428 #endif
2429
2430 void be_detect_error(struct be_adapter *adapter)
2431 {
2432         u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
2433         u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
2434         u32 i;
2435
2436         if (be_hw_error(adapter))
2437                 return;
2438
2439         if (lancer_chip(adapter)) {
2440                 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
2441                 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
2442                         sliport_err1 = ioread32(adapter->db +
2443                                         SLIPORT_ERROR1_OFFSET);
2444                         sliport_err2 = ioread32(adapter->db +
2445                                         SLIPORT_ERROR2_OFFSET);
2446                 }
2447         } else {
2448                 pci_read_config_dword(adapter->pdev,
2449                                 PCICFG_UE_STATUS_LOW, &ue_lo);
2450                 pci_read_config_dword(adapter->pdev,
2451                                 PCICFG_UE_STATUS_HIGH, &ue_hi);
2452                 pci_read_config_dword(adapter->pdev,
2453                                 PCICFG_UE_STATUS_LOW_MASK, &ue_lo_mask);
2454                 pci_read_config_dword(adapter->pdev,
2455                                 PCICFG_UE_STATUS_HI_MASK, &ue_hi_mask);
2456
2457                 ue_lo = (ue_lo & ~ue_lo_mask);
2458                 ue_hi = (ue_hi & ~ue_hi_mask);
2459         }
2460
2461         /* On certain platforms BE hardware can indicate spurious UEs.
2462          * Allow the h/w to stop working completely in case of a real UE.
2463          * Hence not setting the hw_error for UE detection.
2464          */
2465         if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
2466                 adapter->hw_error = true;
2467                 /* Do not log error messages if its a FW reset */
2468                 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
2469                     sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
2470                         dev_info(&adapter->pdev->dev,
2471                                  "Firmware update in progress\n");
2472                         return;
2473                 } else {
2474                         dev_err(&adapter->pdev->dev,
2475                                 "Error detected in the card\n");
2476                 }
2477         }
2478
2479         if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
2480                 dev_err(&adapter->pdev->dev,
2481                         "ERR: sliport status 0x%x\n", sliport_status);
2482                 dev_err(&adapter->pdev->dev,
2483                         "ERR: sliport error1 0x%x\n", sliport_err1);
2484                 dev_err(&adapter->pdev->dev,
2485                         "ERR: sliport error2 0x%x\n", sliport_err2);
2486         }
2487
2488         if (ue_lo) {
2489                 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
2490                         if (ue_lo & 1)
2491                                 dev_err(&adapter->pdev->dev,
2492                                 "UE: %s bit set\n", ue_status_low_desc[i]);
2493                 }
2494         }
2495
2496         if (ue_hi) {
2497                 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
2498                         if (ue_hi & 1)
2499                                 dev_err(&adapter->pdev->dev,
2500                                 "UE: %s bit set\n", ue_status_hi_desc[i]);
2501                 }
2502         }
2503
2504 }
2505
2506 static void be_msix_disable(struct be_adapter *adapter)
2507 {
2508         if (msix_enabled(adapter)) {
2509                 pci_disable_msix(adapter->pdev);
2510                 adapter->num_msix_vec = 0;
2511                 adapter->num_msix_roce_vec = 0;
2512         }
2513 }
2514
2515 static int be_msix_enable(struct be_adapter *adapter)
2516 {
2517         int i, status, num_vec;
2518         struct device *dev = &adapter->pdev->dev;
2519
2520         /* If RoCE is supported, program the max number of NIC vectors that
2521          * may be configured via set-channels, along with vectors needed for
2522          * RoCe. Else, just program the number we'll use initially.
2523          */
2524         if (be_roce_supported(adapter))
2525                 num_vec = min_t(int, 2 * be_max_eqs(adapter),
2526                                 2 * num_online_cpus());
2527         else
2528                 num_vec = adapter->cfg_num_qs;
2529
2530         for (i = 0; i < num_vec; i++)
2531                 adapter->msix_entries[i].entry = i;
2532
2533         status = pci_enable_msix(adapter->pdev, adapter->msix_entries, num_vec);
2534         if (status == 0) {
2535                 goto done;
2536         } else if (status >= MIN_MSIX_VECTORS) {
2537                 num_vec = status;
2538                 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
2539                                          num_vec);
2540                 if (!status)
2541                         goto done;
2542         }
2543
2544         dev_warn(dev, "MSIx enable failed\n");
2545
2546         /* INTx is not supported in VFs, so fail probe if enable_msix fails */
2547         if (!be_physfn(adapter))
2548                 return status;
2549         return 0;
2550 done:
2551         if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
2552                 adapter->num_msix_roce_vec = num_vec / 2;
2553                 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
2554                          adapter->num_msix_roce_vec);
2555         }
2556
2557         adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
2558
2559         dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
2560                  adapter->num_msix_vec);
2561         return 0;
2562 }
2563
2564 static inline int be_msix_vec_get(struct be_adapter *adapter,
2565                                 struct be_eq_obj *eqo)
2566 {
2567         return adapter->msix_entries[eqo->msix_idx].vector;
2568 }
2569
2570 static int be_msix_register(struct be_adapter *adapter)
2571 {
2572         struct net_device *netdev = adapter->netdev;
2573         struct be_eq_obj *eqo;
2574         int status, i, vec;
2575
2576         for_all_evt_queues(adapter, eqo, i) {
2577                 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
2578                 vec = be_msix_vec_get(adapter, eqo);
2579                 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
2580                 if (status)
2581                         goto err_msix;
2582         }
2583
2584         return 0;
2585 err_msix:
2586         for (i--, eqo = &adapter->eq_obj[i]; i >= 0; i--, eqo--)
2587                 free_irq(be_msix_vec_get(adapter, eqo), eqo);
2588         dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
2589                 status);
2590         be_msix_disable(adapter);
2591         return status;
2592 }
2593
2594 static int be_irq_register(struct be_adapter *adapter)
2595 {
2596         struct net_device *netdev = adapter->netdev;
2597         int status;
2598
2599         if (msix_enabled(adapter)) {
2600                 status = be_msix_register(adapter);
2601                 if (status == 0)
2602                         goto done;
2603                 /* INTx is not supported for VF */
2604                 if (!be_physfn(adapter))
2605                         return status;
2606         }
2607
2608         /* INTx: only the first EQ is used */
2609         netdev->irq = adapter->pdev->irq;
2610         status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
2611                              &adapter->eq_obj[0]);
2612         if (status) {
2613                 dev_err(&adapter->pdev->dev,
2614                         "INTx request IRQ failed - err %d\n", status);
2615                 return status;
2616         }
2617 done:
2618         adapter->isr_registered = true;
2619         return 0;
2620 }
2621
2622 static void be_irq_unregister(struct be_adapter *adapter)
2623 {
2624         struct net_device *netdev = adapter->netdev;
2625         struct be_eq_obj *eqo;
2626         int i;
2627
2628         if (!adapter->isr_registered)
2629                 return;
2630
2631         /* INTx */
2632         if (!msix_enabled(adapter)) {
2633                 free_irq(netdev->irq, &adapter->eq_obj[0]);
2634                 goto done;
2635         }
2636
2637         /* MSIx */
2638         for_all_evt_queues(adapter, eqo, i)
2639                 free_irq(be_msix_vec_get(adapter, eqo), eqo);
2640
2641 done:
2642         adapter->isr_registered = false;
2643 }
2644
2645 static void be_rx_qs_destroy(struct be_adapter *adapter)
2646 {
2647         struct be_queue_info *q;
2648         struct be_rx_obj *rxo;
2649         int i;
2650
2651         for_all_rx_queues(adapter, rxo, i) {
2652                 q = &rxo->q;
2653                 if (q->created) {
2654                         be_cmd_rxq_destroy(adapter, q);
2655                         be_rx_cq_clean(rxo);
2656                 }
2657                 be_queue_free(adapter, q);
2658         }
2659 }
2660
2661 static int be_close(struct net_device *netdev)
2662 {
2663         struct be_adapter *adapter = netdev_priv(netdev);
2664         struct be_eq_obj *eqo;
2665         int i;
2666
2667         be_roce_dev_close(adapter);
2668
2669         if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
2670                 for_all_evt_queues(adapter, eqo, i) {
2671                         napi_disable(&eqo->napi);
2672                         be_disable_busy_poll(eqo);
2673                 }
2674                 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
2675         }
2676
2677         be_async_mcc_disable(adapter);
2678
2679         /* Wait for all pending tx completions to arrive so that
2680          * all tx skbs are freed.
2681          */
2682         netif_tx_disable(netdev);
2683         be_tx_compl_clean(adapter);
2684
2685         be_rx_qs_destroy(adapter);
2686
2687         for (i = 1; i < (adapter->uc_macs + 1); i++)
2688                 be_cmd_pmac_del(adapter, adapter->if_handle,
2689                                 adapter->pmac_id[i], 0);
2690         adapter->uc_macs = 0;
2691
2692         for_all_evt_queues(adapter, eqo, i) {
2693                 if (msix_enabled(adapter))
2694                         synchronize_irq(be_msix_vec_get(adapter, eqo));
2695                 else
2696                         synchronize_irq(netdev->irq);
2697                 be_eq_clean(eqo);
2698         }
2699
2700         be_irq_unregister(adapter);
2701
2702         return 0;
2703 }
2704
2705 static int be_rx_qs_create(struct be_adapter *adapter)
2706 {
2707         struct be_rx_obj *rxo;
2708         int rc, i, j;
2709         u8 rsstable[128];
2710
2711         for_all_rx_queues(adapter, rxo, i) {
2712                 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
2713                                     sizeof(struct be_eth_rx_d));
2714                 if (rc)
2715                         return rc;
2716         }
2717
2718         /* The FW would like the default RXQ to be created first */
2719         rxo = default_rxo(adapter);
2720         rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id, rx_frag_size,
2721                                adapter->if_handle, false, &rxo->rss_id);
2722         if (rc)
2723                 return rc;
2724
2725         for_all_rss_queues(adapter, rxo, i) {
2726                 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
2727                                        rx_frag_size, adapter->if_handle,
2728                                        true, &rxo->rss_id);
2729                 if (rc)
2730                         return rc;
2731         }
2732
2733         if (be_multi_rxq(adapter)) {
2734                 for (j = 0; j < 128; j += adapter->num_rx_qs - 1) {
2735                         for_all_rss_queues(adapter, rxo, i) {
2736                                 if ((j + i) >= 128)
2737                                         break;
2738                                 rsstable[j + i] = rxo->rss_id;
2739                         }
2740                 }
2741                 adapter->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
2742                                         RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
2743
2744                 if (!BEx_chip(adapter))
2745                         adapter->rss_flags |= RSS_ENABLE_UDP_IPV4 |
2746                                                 RSS_ENABLE_UDP_IPV6;
2747
2748                 rc = be_cmd_rss_config(adapter, rsstable, adapter->rss_flags,
2749                                        128);
2750                 if (rc) {
2751                         adapter->rss_flags = 0;
2752                         return rc;
2753                 }
2754         }
2755
2756         /* First time posting */
2757         for_all_rx_queues(adapter, rxo, i)
2758                 be_post_rx_frags(rxo, GFP_KERNEL);
2759         return 0;
2760 }
2761
2762 static int be_open(struct net_device *netdev)
2763 {
2764         struct be_adapter *adapter = netdev_priv(netdev);
2765         struct be_eq_obj *eqo;
2766         struct be_rx_obj *rxo;
2767         struct be_tx_obj *txo;
2768         u8 link_status;
2769         int status, i;
2770
2771         status = be_rx_qs_create(adapter);
2772         if (status)
2773                 goto err;
2774
2775         status = be_irq_register(adapter);
2776         if (status)
2777                 goto err;
2778
2779         for_all_rx_queues(adapter, rxo, i)
2780                 be_cq_notify(adapter, rxo->cq.id, true, 0);
2781
2782         for_all_tx_queues(adapter, txo, i)
2783                 be_cq_notify(adapter, txo->cq.id, true, 0);
2784
2785         be_async_mcc_enable(adapter);
2786
2787         for_all_evt_queues(adapter, eqo, i) {
2788                 napi_enable(&eqo->napi);
2789                 be_enable_busy_poll(eqo);
2790                 be_eq_notify(adapter, eqo->q.id, true, false, 0);
2791         }
2792         adapter->flags |= BE_FLAGS_NAPI_ENABLED;
2793
2794         status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
2795         if (!status)
2796                 be_link_status_update(adapter, link_status);
2797
2798         netif_tx_start_all_queues(netdev);
2799         be_roce_dev_open(adapter);
2800         return 0;
2801 err:
2802         be_close(adapter->netdev);
2803         return -EIO;
2804 }
2805
2806 static int be_setup_wol(struct be_adapter *adapter, bool enable)
2807 {
2808         struct be_dma_mem cmd;
2809         int status = 0;
2810         u8 mac[ETH_ALEN];
2811
2812         memset(mac, 0, ETH_ALEN);
2813
2814         cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
2815         cmd.va = dma_zalloc_coherent(&adapter->pdev->dev, cmd.size, &cmd.dma,
2816                                      GFP_KERNEL);
2817         if (cmd.va == NULL)
2818                 return -1;
2819
2820         if (enable) {
2821                 status = pci_write_config_dword(adapter->pdev,
2822                         PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
2823                 if (status) {
2824                         dev_err(&adapter->pdev->dev,
2825                                 "Could not enable Wake-on-lan\n");
2826                         dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va,
2827                                           cmd.dma);
2828                         return status;
2829                 }
2830                 status = be_cmd_enable_magic_wol(adapter,
2831                                 adapter->netdev->dev_addr, &cmd);
2832                 pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
2833                 pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
2834         } else {
2835                 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
2836                 pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
2837                 pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
2838         }
2839
2840         dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va, cmd.dma);
2841         return status;
2842 }
2843
2844 /*
2845  * Generate a seed MAC address from the PF MAC Address using jhash.
2846  * MAC Address for VFs are assigned incrementally starting from the seed.
2847  * These addresses are programmed in the ASIC by the PF and the VF driver
2848  * queries for the MAC address during its probe.
2849  */
2850 static int be_vf_eth_addr_config(struct be_adapter *adapter)
2851 {
2852         u32 vf;
2853         int status = 0;
2854         u8 mac[ETH_ALEN];
2855         struct be_vf_cfg *vf_cfg;
2856
2857         be_vf_eth_addr_generate(adapter, mac);
2858
2859         for_all_vfs(adapter, vf_cfg, vf) {
2860                 if (BEx_chip(adapter))
2861                         status = be_cmd_pmac_add(adapter, mac,
2862                                                  vf_cfg->if_handle,
2863                                                  &vf_cfg->pmac_id, vf + 1);
2864                 else
2865                         status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
2866                                                 vf + 1);
2867
2868                 if (status)
2869                         dev_err(&adapter->pdev->dev,
2870                         "Mac address assignment failed for VF %d\n", vf);
2871                 else
2872                         memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
2873
2874                 mac[5] += 1;
2875         }
2876         return status;
2877 }
2878
2879 static int be_vfs_mac_query(struct be_adapter *adapter)
2880 {
2881         int status, vf;
2882         u8 mac[ETH_ALEN];
2883         struct be_vf_cfg *vf_cfg;
2884         bool active = false;
2885
2886         for_all_vfs(adapter, vf_cfg, vf) {
2887                 be_cmd_get_mac_from_list(adapter, mac, &active,
2888                                          &vf_cfg->pmac_id, 0);
2889
2890                 status = be_cmd_mac_addr_query(adapter, mac, false,
2891                                                vf_cfg->if_handle, 0);
2892                 if (status)
2893                         return status;
2894                 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
2895         }
2896         return 0;
2897 }
2898
2899 static void be_vf_clear(struct be_adapter *adapter)
2900 {
2901         struct be_vf_cfg *vf_cfg;
2902         u32 vf;
2903
2904         if (pci_vfs_assigned(adapter->pdev)) {
2905                 dev_warn(&adapter->pdev->dev,
2906                          "VFs are assigned to VMs: not disabling VFs\n");
2907                 goto done;
2908         }
2909
2910         pci_disable_sriov(adapter->pdev);
2911
2912         for_all_vfs(adapter, vf_cfg, vf) {
2913                 if (BEx_chip(adapter))
2914                         be_cmd_pmac_del(adapter, vf_cfg->if_handle,
2915                                         vf_cfg->pmac_id, vf + 1);
2916                 else
2917                         be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
2918                                        vf + 1);
2919
2920                 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
2921         }
2922 done:
2923         kfree(adapter->vf_cfg);
2924         adapter->num_vfs = 0;
2925 }
2926
2927 static void be_clear_queues(struct be_adapter *adapter)
2928 {
2929         be_mcc_queues_destroy(adapter);
2930         be_rx_cqs_destroy(adapter);
2931         be_tx_queues_destroy(adapter);
2932         be_evt_queues_destroy(adapter);
2933 }
2934
2935 static void be_cancel_worker(struct be_adapter *adapter)
2936 {
2937         if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
2938                 cancel_delayed_work_sync(&adapter->work);
2939                 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
2940         }
2941 }
2942
2943 static void be_mac_clear(struct be_adapter *adapter)
2944 {
2945         int i;
2946
2947         if (adapter->pmac_id) {
2948                 for (i = 0; i < (adapter->uc_macs + 1); i++)
2949                         be_cmd_pmac_del(adapter, adapter->if_handle,
2950                                         adapter->pmac_id[i], 0);
2951                 adapter->uc_macs = 0;
2952
2953                 kfree(adapter->pmac_id);
2954                 adapter->pmac_id = NULL;
2955         }
2956 }
2957
2958 static int be_clear(struct be_adapter *adapter)
2959 {
2960         be_cancel_worker(adapter);
2961
2962         if (sriov_enabled(adapter))
2963                 be_vf_clear(adapter);
2964
2965         /* delete the primary mac along with the uc-mac list */
2966         be_mac_clear(adapter);
2967
2968         be_cmd_if_destroy(adapter, adapter->if_handle,  0);
2969
2970         be_clear_queues(adapter);
2971
2972         be_msix_disable(adapter);
2973         return 0;
2974 }
2975
2976 static int be_vfs_if_create(struct be_adapter *adapter)
2977 {
2978         struct be_resources res = {0};
2979         struct be_vf_cfg *vf_cfg;
2980         u32 cap_flags, en_flags, vf;
2981         int status = 0;
2982
2983         cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
2984                     BE_IF_FLAGS_MULTICAST;
2985
2986         for_all_vfs(adapter, vf_cfg, vf) {
2987                 if (!BE3_chip(adapter)) {
2988                         status = be_cmd_get_profile_config(adapter, &res,
2989                                                            vf + 1);
2990                         if (!status)
2991                                 cap_flags = res.if_cap_flags;
2992                 }
2993
2994                 /* If a FW profile exists, then cap_flags are updated */
2995                 en_flags = cap_flags & (BE_IF_FLAGS_UNTAGGED |
2996                            BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_MULTICAST);
2997                 status = be_cmd_if_create(adapter, cap_flags, en_flags,
2998                                           &vf_cfg->if_handle, vf + 1);
2999                 if (status)
3000                         goto err;
3001         }
3002 err:
3003         return status;
3004 }
3005
3006 static int be_vf_setup_init(struct be_adapter *adapter)
3007 {
3008         struct be_vf_cfg *vf_cfg;
3009         int vf;
3010
3011         adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
3012                                   GFP_KERNEL);
3013         if (!adapter->vf_cfg)
3014                 return -ENOMEM;
3015
3016         for_all_vfs(adapter, vf_cfg, vf) {
3017                 vf_cfg->if_handle = -1;
3018                 vf_cfg->pmac_id = -1;
3019         }
3020         return 0;
3021 }
3022
3023 static int be_vf_setup(struct be_adapter *adapter)
3024 {
3025         struct be_vf_cfg *vf_cfg;
3026         u16 def_vlan, lnk_speed;
3027         int status, old_vfs, vf;
3028         struct device *dev = &adapter->pdev->dev;
3029         u32 privileges;
3030
3031         old_vfs = pci_num_vf(adapter->pdev);
3032         if (old_vfs) {
3033                 dev_info(dev, "%d VFs are already enabled\n", old_vfs);
3034                 if (old_vfs != num_vfs)
3035                         dev_warn(dev, "Ignoring num_vfs=%d setting\n", num_vfs);
3036                 adapter->num_vfs = old_vfs;
3037         } else {
3038                 if (num_vfs > be_max_vfs(adapter))
3039                         dev_info(dev, "Device supports %d VFs and not %d\n",
3040                                  be_max_vfs(adapter), num_vfs);
3041                 adapter->num_vfs = min_t(u16, num_vfs, be_max_vfs(adapter));
3042                 if (!adapter->num_vfs)
3043                         return 0;
3044         }
3045
3046         status = be_vf_setup_init(adapter);
3047         if (status)
3048                 goto err;
3049
3050         if (old_vfs) {
3051                 for_all_vfs(adapter, vf_cfg, vf) {
3052                         status = be_cmd_get_if_id(adapter, vf_cfg, vf);
3053                         if (status)
3054                                 goto err;
3055                 }
3056         } else {
3057                 status = be_vfs_if_create(adapter);
3058                 if (status)
3059                         goto err;
3060         }
3061
3062         if (old_vfs) {
3063                 status = be_vfs_mac_query(adapter);
3064                 if (status)
3065                         goto err;
3066         } else {
3067                 status = be_vf_eth_addr_config(adapter);
3068                 if (status)
3069                         goto err;
3070         }
3071
3072         for_all_vfs(adapter, vf_cfg, vf) {
3073                 /* Allow VFs to programs MAC/VLAN filters */
3074                 status = be_cmd_get_fn_privileges(adapter, &privileges, vf + 1);
3075                 if (!status && !(privileges & BE_PRIV_FILTMGMT)) {
3076                         status = be_cmd_set_fn_privileges(adapter,
3077                                                           privileges |
3078                                                           BE_PRIV_FILTMGMT,
3079                                                           vf + 1);
3080                         if (!status)
3081                                 dev_info(dev, "VF%d has FILTMGMT privilege\n",
3082                                          vf);
3083                 }
3084
3085                 /* BE3 FW, by default, caps VF TX-rate to 100mbps.
3086                  * Allow full available bandwidth
3087                  */
3088                 if (BE3_chip(adapter) && !old_vfs)
3089                         be_cmd_set_qos(adapter, 1000, vf+1);
3090
3091                 status = be_cmd_link_status_query(adapter, &lnk_speed,
3092                                                   NULL, vf + 1);
3093                 if (!status)
3094                         vf_cfg->tx_rate = lnk_speed;
3095
3096                 status = be_cmd_get_hsw_config(adapter, &def_vlan,
3097                                                vf + 1, vf_cfg->if_handle, NULL);
3098                 if (status)
3099                         goto err;
3100                 vf_cfg->def_vid = def_vlan;
3101
3102                 if (!old_vfs)
3103                         be_cmd_enable_vf(adapter, vf + 1);
3104         }
3105
3106         if (!old_vfs) {
3107                 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
3108                 if (status) {
3109                         dev_err(dev, "SRIOV enable failed\n");
3110                         adapter->num_vfs = 0;
3111                         goto err;
3112                 }
3113         }
3114         return 0;
3115 err:
3116         dev_err(dev, "VF setup failed\n");
3117         be_vf_clear(adapter);
3118         return status;
3119 }
3120
3121 /* On BE2/BE3 FW does not suggest the supported limits */
3122 static void BEx_get_resources(struct be_adapter *adapter,
3123                               struct be_resources *res)
3124 {
3125         struct pci_dev *pdev = adapter->pdev;
3126         bool use_sriov = false;
3127
3128         if (BE3_chip(adapter) && sriov_want(adapter)) {
3129                 int max_vfs;
3130
3131                 max_vfs = pci_sriov_get_totalvfs(pdev);
3132                 res->max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
3133                 use_sriov = res->max_vfs;
3134         }
3135
3136         if (be_physfn(adapter))
3137                 res->max_uc_mac = BE_UC_PMAC_COUNT;
3138         else
3139                 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
3140
3141         if (adapter->function_mode & FLEX10_MODE)
3142                 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
3143         else if (adapter->function_mode & UMC_ENABLED)
3144                 res->max_vlans = BE_UMC_NUM_VLANS_SUPPORTED;
3145         else
3146                 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
3147         res->max_mcast_mac = BE_MAX_MC;
3148
3149         /* For BE3 1Gb ports, F/W does not properly support multiple TXQs */
3150         if (BE2_chip(adapter) || use_sriov || be_is_mc(adapter) ||
3151             !be_physfn(adapter) || (adapter->port_num > 1))
3152                 res->max_tx_qs = 1;
3153         else
3154                 res->max_tx_qs = BE3_MAX_TX_QS;
3155
3156         if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
3157             !use_sriov && be_physfn(adapter))
3158                 res->max_rss_qs = (adapter->be3_native) ?
3159                                            BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
3160         res->max_rx_qs = res->max_rss_qs + 1;
3161
3162         res->max_evt_qs = be_physfn(adapter) ? BE3_MAX_EVT_QS : 1;
3163
3164         res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
3165         if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
3166                 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
3167 }
3168
3169 static void be_setup_init(struct be_adapter *adapter)
3170 {
3171         adapter->vlan_prio_bmap = 0xff;
3172         adapter->phy.link_speed = -1;
3173         adapter->if_handle = -1;
3174         adapter->be3_native = false;
3175         adapter->promiscuous = false;
3176         if (be_physfn(adapter))
3177                 adapter->cmd_privileges = MAX_PRIVILEGES;
3178         else
3179                 adapter->cmd_privileges = MIN_PRIVILEGES;
3180 }
3181
3182 static int be_get_resources(struct be_adapter *adapter)
3183 {
3184         struct device *dev = &adapter->pdev->dev;
3185         struct be_resources res = {0};
3186         int status;
3187
3188         if (BEx_chip(adapter)) {
3189                 BEx_get_resources(adapter, &res);
3190                 adapter->res = res;
3191         }
3192
3193         /* For Lancer, SH etc read per-function resource limits from FW.
3194          * GET_FUNC_CONFIG returns per function guaranteed limits.
3195          * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
3196          */
3197         if (!BEx_chip(adapter)) {
3198                 status = be_cmd_get_func_config(adapter, &res);
3199                 if (status)
3200                         return status;
3201
3202                 /* If RoCE may be enabled stash away half the EQs for RoCE */
3203                 if (be_roce_supported(adapter))
3204                         res.max_evt_qs /= 2;
3205                 adapter->res = res;
3206
3207                 if (be_physfn(adapter)) {
3208                         status = be_cmd_get_profile_config(adapter, &res, 0);
3209                         if (status)
3210                                 return status;
3211                         adapter->res.max_vfs = res.max_vfs;
3212                 }
3213
3214                 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
3215                          be_max_txqs(adapter), be_max_rxqs(adapter),
3216                          be_max_rss(adapter), be_max_eqs(adapter),
3217                          be_max_vfs(adapter));
3218                 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
3219                          be_max_uc(adapter), be_max_mc(adapter),
3220                          be_max_vlans(adapter));
3221         }
3222
3223         return 0;
3224 }
3225
3226 /* Routine to query per function resource limits */
3227 static int be_get_config(struct be_adapter *adapter)
3228 {
3229         int status;
3230
3231         status = be_cmd_query_fw_cfg(adapter, &adapter->port_num,
3232                                      &adapter->function_mode,
3233                                      &adapter->function_caps,
3234                                      &adapter->asic_rev);
3235         if (status)
3236                 return status;
3237
3238         status = be_get_resources(adapter);
3239         if (status)
3240                 return status;
3241
3242         /* primary mac needs 1 pmac entry */
3243         adapter->pmac_id = kcalloc(be_max_uc(adapter) + 1, sizeof(u32),
3244                                    GFP_KERNEL);
3245         if (!adapter->pmac_id)
3246                 return -ENOMEM;
3247
3248         /* Sanitize cfg_num_qs based on HW and platform limits */
3249         adapter->cfg_num_qs = min(adapter->cfg_num_qs, be_max_qs(adapter));
3250
3251         return 0;
3252 }
3253
3254 static int be_mac_setup(struct be_adapter *adapter)
3255 {
3256         u8 mac[ETH_ALEN];
3257         int status;
3258
3259         if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
3260                 status = be_cmd_get_perm_mac(adapter, mac);
3261                 if (status)
3262                         return status;
3263
3264                 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
3265                 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
3266         } else {
3267                 /* Maybe the HW was reset; dev_addr must be re-programmed */
3268                 memcpy(mac, adapter->netdev->dev_addr, ETH_ALEN);
3269         }
3270
3271         /* For BE3-R VFs, the PF programs the initial MAC address */
3272         if (!(BEx_chip(adapter) && be_virtfn(adapter)))
3273                 be_cmd_pmac_add(adapter, mac, adapter->if_handle,
3274                                 &adapter->pmac_id[0], 0);
3275         return 0;
3276 }
3277
3278 static void be_schedule_worker(struct be_adapter *adapter)
3279 {
3280         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
3281         adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
3282 }
3283
3284 static int be_setup_queues(struct be_adapter *adapter)
3285 {
3286         struct net_device *netdev = adapter->netdev;
3287         int status;
3288
3289         status = be_evt_queues_create(adapter);
3290         if (status)
3291                 goto err;
3292
3293         status = be_tx_qs_create(adapter);
3294         if (status)
3295                 goto err;
3296
3297         status = be_rx_cqs_create(adapter);
3298         if (status)
3299                 goto err;
3300
3301         status = be_mcc_queues_create(adapter);
3302         if (status)
3303                 goto err;
3304
3305         status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
3306         if (status)
3307                 goto err;
3308
3309         status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
3310         if (status)
3311                 goto err;
3312
3313         return 0;
3314 err:
3315         dev_err(&adapter->pdev->dev, "queue_setup failed\n");
3316         return status;
3317 }
3318
3319 int be_update_queues(struct be_adapter *adapter)
3320 {
3321         struct net_device *netdev = adapter->netdev;
3322         int status;
3323
3324         if (netif_running(netdev))
3325                 be_close(netdev);
3326
3327         be_cancel_worker(adapter);
3328
3329         /* If any vectors have been shared with RoCE we cannot re-program
3330          * the MSIx table.
3331          */
3332         if (!adapter->num_msix_roce_vec)
3333                 be_msix_disable(adapter);
3334
3335         be_clear_queues(adapter);
3336
3337         if (!msix_enabled(adapter)) {
3338                 status = be_msix_enable(adapter);
3339                 if (status)
3340                         return status;
3341         }
3342
3343         status = be_setup_queues(adapter);
3344         if (status)
3345                 return status;
3346
3347         be_schedule_worker(adapter);
3348
3349         if (netif_running(netdev))
3350                 status = be_open(netdev);
3351
3352         return status;
3353 }
3354
3355 static int be_setup(struct be_adapter *adapter)
3356 {
3357         struct device *dev = &adapter->pdev->dev;
3358         u32 tx_fc, rx_fc, en_flags;
3359         int status;
3360
3361         be_setup_init(adapter);
3362
3363         if (!lancer_chip(adapter))
3364                 be_cmd_req_native_mode(adapter);
3365
3366         status = be_get_config(adapter);
3367         if (status)
3368                 goto err;
3369
3370         status = be_msix_enable(adapter);
3371         if (status)
3372                 goto err;
3373
3374         en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
3375                    BE_IF_FLAGS_MULTICAST | BE_IF_FLAGS_PASS_L3L4_ERRORS;
3376         if (adapter->function_caps & BE_FUNCTION_CAPS_RSS)
3377                 en_flags |= BE_IF_FLAGS_RSS;
3378         en_flags = en_flags & be_if_cap_flags(adapter);
3379         status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
3380                                   &adapter->if_handle, 0);
3381         if (status)
3382                 goto err;
3383
3384         /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
3385         rtnl_lock();
3386         status = be_setup_queues(adapter);
3387         rtnl_unlock();
3388         if (status)
3389                 goto err;
3390
3391         be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
3392         /* In UMC mode FW does not return right privileges.
3393          * Override with correct privilege equivalent to PF.
3394          */
3395         if (be_is_mc(adapter))
3396                 adapter->cmd_privileges = MAX_PRIVILEGES;
3397
3398         status = be_mac_setup(adapter);
3399         if (status)
3400                 goto err;
3401
3402         be_cmd_get_fw_ver(adapter, adapter->fw_ver, adapter->fw_on_flash);
3403
3404         if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
3405                 dev_err(dev, "Firmware on card is old(%s), IRQs may not work.",
3406                         adapter->fw_ver);
3407                 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
3408         }
3409
3410         if (adapter->vlans_added)
3411                 be_vid_config(adapter);
3412
3413         be_set_rx_mode(adapter->netdev);
3414
3415         be_cmd_get_flow_control(adapter, &tx_fc, &rx_fc);
3416
3417         if (rx_fc != adapter->rx_fc || tx_fc != adapter->tx_fc)
3418                 be_cmd_set_flow_control(adapter, adapter->tx_fc,
3419                                         adapter->rx_fc);
3420
3421         if (sriov_want(adapter)) {
3422                 if (be_max_vfs(adapter))
3423                         be_vf_setup(adapter);
3424                 else
3425                         dev_warn(dev, "device doesn't support SRIOV\n");
3426         }
3427
3428         status = be_cmd_get_phy_info(adapter);
3429         if (!status && be_pause_supported(adapter))
3430                 adapter->phy.fc_autoneg = 1;
3431
3432         be_schedule_worker(adapter);
3433         return 0;
3434 err:
3435         be_clear(adapter);
3436         return status;
3437 }
3438
3439 #ifdef CONFIG_NET_POLL_CONTROLLER
3440 static void be_netpoll(struct net_device *netdev)
3441 {
3442         struct be_adapter *adapter = netdev_priv(netdev);
3443         struct be_eq_obj *eqo;
3444         int i;
3445
3446         for_all_evt_queues(adapter, eqo, i) {
3447                 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0);
3448                 napi_schedule(&eqo->napi);
3449         }
3450
3451         return;
3452 }
3453 #endif
3454
3455 #define FW_FILE_HDR_SIGN        "ServerEngines Corp. "
3456 static char flash_cookie[2][16] =      {"*** SE FLAS", "H DIRECTORY *** "};
3457
3458 static bool be_flash_redboot(struct be_adapter *adapter,
3459                         const u8 *p, u32 img_start, int image_size,
3460                         int hdr_size)
3461 {
3462         u32 crc_offset;
3463         u8 flashed_crc[4];
3464         int status;
3465
3466         crc_offset = hdr_size + img_start + image_size - 4;
3467
3468         p += crc_offset;
3469
3470         status = be_cmd_get_flash_crc(adapter, flashed_crc,
3471                         (image_size - 4));
3472         if (status) {
3473                 dev_err(&adapter->pdev->dev,
3474                 "could not get crc from flash, not flashing redboot\n");
3475                 return false;
3476         }
3477
3478         /*update redboot only if crc does not match*/
3479         if (!memcmp(flashed_crc, p, 4))
3480                 return false;
3481         else
3482                 return true;
3483 }
3484
3485 static bool phy_flashing_required(struct be_adapter *adapter)
3486 {
3487         return (adapter->phy.phy_type == TN_8022 &&
3488                 adapter->phy.interface_type == PHY_TYPE_BASET_10GB);
3489 }
3490
3491 static bool is_comp_in_ufi(struct be_adapter *adapter,
3492                            struct flash_section_info *fsec, int type)
3493 {
3494         int i = 0, img_type = 0;
3495         struct flash_section_info_g2 *fsec_g2 = NULL;
3496
3497         if (BE2_chip(adapter))
3498                 fsec_g2 = (struct flash_section_info_g2 *)fsec;
3499
3500         for (i = 0; i < MAX_FLASH_COMP; i++) {
3501                 if (fsec_g2)
3502                         img_type = le32_to_cpu(fsec_g2->fsec_entry[i].type);
3503                 else
3504                         img_type = le32_to_cpu(fsec->fsec_entry[i].type);
3505
3506                 if (img_type == type)
3507                         return true;
3508         }
3509         return false;
3510
3511 }
3512
3513 static struct flash_section_info *get_fsec_info(struct be_adapter *adapter,
3514                                          int header_size,
3515                                          const struct firmware *fw)
3516 {
3517         struct flash_section_info *fsec = NULL;
3518         const u8 *p = fw->data;
3519
3520         p += header_size;
3521         while (p < (fw->data + fw->size)) {
3522                 fsec = (struct flash_section_info *)p;
3523                 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie)))
3524                         return fsec;
3525                 p += 32;
3526         }
3527         return NULL;
3528 }
3529
3530 static int be_flash(struct be_adapter *adapter, const u8 *img,
3531                 struct be_dma_mem *flash_cmd, int optype, int img_size)
3532 {
3533         u32 total_bytes = 0, flash_op, num_bytes = 0;
3534         int status = 0;
3535         struct be_cmd_write_flashrom *req = flash_cmd->va;
3536
3537         total_bytes = img_size;
3538         while (total_bytes) {
3539                 num_bytes = min_t(u32, 32*1024, total_bytes);
3540
3541                 total_bytes -= num_bytes;
3542
3543                 if (!total_bytes) {
3544                         if (optype == OPTYPE_PHY_FW)
3545                                 flash_op = FLASHROM_OPER_PHY_FLASH;
3546                         else
3547                                 flash_op = FLASHROM_OPER_FLASH;
3548                 } else {
3549                         if (optype == OPTYPE_PHY_FW)
3550                                 flash_op = FLASHROM_OPER_PHY_SAVE;
3551                         else
3552                                 flash_op = FLASHROM_OPER_SAVE;
3553                 }
3554
3555                 memcpy(req->data_buf, img, num_bytes);
3556                 img += num_bytes;
3557                 status = be_cmd_write_flashrom(adapter, flash_cmd, optype,
3558                                                 flash_op, num_bytes);
3559                 if (status) {
3560                         if (status == ILLEGAL_IOCTL_REQ &&
3561                             optype == OPTYPE_PHY_FW)
3562                                 break;
3563                         dev_err(&adapter->pdev->dev,
3564                                 "cmd to write to flash rom failed.\n");
3565                         return status;
3566                 }
3567         }
3568         return 0;
3569 }
3570
3571 /* For BE2, BE3 and BE3-R */
3572 static int be_flash_BEx(struct be_adapter *adapter,
3573                          const struct firmware *fw,
3574                          struct be_dma_mem *flash_cmd,
3575                          int num_of_images)
3576
3577 {
3578         int status = 0, i, filehdr_size = 0;
3579         int img_hdrs_size = (num_of_images * sizeof(struct image_hdr));
3580         const u8 *p = fw->data;
3581         const struct flash_comp *pflashcomp;
3582         int num_comp, redboot;
3583         struct flash_section_info *fsec = NULL;
3584
3585         struct flash_comp gen3_flash_types[] = {
3586                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g3, OPTYPE_ISCSI_ACTIVE,
3587                         FLASH_IMAGE_MAX_SIZE_g3, IMAGE_FIRMWARE_iSCSI},
3588                 { FLASH_REDBOOT_START_g3, OPTYPE_REDBOOT,
3589                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g3, IMAGE_BOOT_CODE},
3590                 { FLASH_iSCSI_BIOS_START_g3, OPTYPE_BIOS,
3591                         FLASH_BIOS_IMAGE_MAX_SIZE_g3, IMAGE_OPTION_ROM_ISCSI},
3592                 { FLASH_PXE_BIOS_START_g3, OPTYPE_PXE_BIOS,
3593                         FLASH_BIOS_IMAGE_MAX_SIZE_g3, IMAGE_OPTION_ROM_PXE},
3594                 { FLASH_FCoE_BIOS_START_g3, OPTYPE_FCOE_BIOS,
3595                         FLASH_BIOS_IMAGE_MAX_SIZE_g3, IMAGE_OPTION_ROM_FCoE},
3596                 { FLASH_iSCSI_BACKUP_IMAGE_START_g3, OPTYPE_ISCSI_BACKUP,
3597                         FLASH_IMAGE_MAX_SIZE_g3, IMAGE_FIRMWARE_BACKUP_iSCSI},
3598                 { FLASH_FCoE_PRIMARY_IMAGE_START_g3, OPTYPE_FCOE_FW_ACTIVE,
3599                         FLASH_IMAGE_MAX_SIZE_g3, IMAGE_FIRMWARE_FCoE},
3600                 { FLASH_FCoE_BACKUP_IMAGE_START_g3, OPTYPE_FCOE_FW_BACKUP,
3601                         FLASH_IMAGE_MAX_SIZE_g3, IMAGE_FIRMWARE_BACKUP_FCoE},
3602                 { FLASH_NCSI_START_g3, OPTYPE_NCSI_FW,
3603                         FLASH_NCSI_IMAGE_MAX_SIZE_g3, IMAGE_NCSI},
3604                 { FLASH_PHY_FW_START_g3, OPTYPE_PHY_FW,
3605                         FLASH_PHY_FW_IMAGE_MAX_SIZE_g3, IMAGE_FIRMWARE_PHY}
3606         };
3607
3608         struct flash_comp gen2_flash_types[] = {
3609                 { FLASH_iSCSI_PRIMARY_IMAGE_START_g2, OPTYPE_ISCSI_ACTIVE,
3610                         FLASH_IMAGE_MAX_SIZE_g2, IMAGE_FIRMWARE_iSCSI},
3611                 { FLASH_REDBOOT_START_g2, OPTYPE_REDBOOT,
3612                         FLASH_REDBOOT_IMAGE_MAX_SIZE_g2, IMAGE_BOOT_CODE},
3613                 { FLASH_iSCSI_BIOS_START_g2, OPTYPE_BIOS,
3614                         FLASH_BIOS_IMAGE_MAX_SIZE_g2, IMAGE_OPTION_ROM_ISCSI},
3615                 { FLASH_PXE_BIOS_START_g2, OPTYPE_PXE_BIOS,
3616                         FLASH_BIOS_IMAGE_MAX_SIZE_g2, IMAGE_OPTION_ROM_PXE},
3617                 { FLASH_FCoE_BIOS_START_g2, OPTYPE_FCOE_BIOS,
3618                         FLASH_BIOS_IMAGE_MAX_SIZE_g2, IMAGE_OPTION_ROM_FCoE},
3619                 { FLASH_iSCSI_BACKUP_IMAGE_START_g2, OPTYPE_ISCSI_BACKUP,
3620                         FLASH_IMAGE_MAX_SIZE_g2, IMAGE_FIRMWARE_BACKUP_iSCSI},
3621                 { FLASH_FCoE_PRIMARY_IMAGE_START_g2, OPTYPE_FCOE_FW_ACTIVE,
3622                         FLASH_IMAGE_MAX_SIZE_g2, IMAGE_FIRMWARE_FCoE},
3623                 { FLASH_FCoE_BACKUP_IMAGE_START_g2, OPTYPE_FCOE_FW_BACKUP,
3624                          FLASH_IMAGE_MAX_SIZE_g2, IMAGE_FIRMWARE_BACKUP_FCoE}
3625         };
3626
3627         if (BE3_chip(adapter)) {
3628                 pflashcomp = gen3_flash_types;
3629                 filehdr_size = sizeof(struct flash_file_hdr_g3);
3630                 num_comp = ARRAY_SIZE(gen3_flash_types);
3631         } else {
3632                 pflashcomp = gen2_flash_types;
3633                 filehdr_size = sizeof(struct flash_file_hdr_g2);
3634                 num_comp = ARRAY_SIZE(gen2_flash_types);
3635         }
3636
3637         /* Get flash section info*/
3638         fsec = get_fsec_info(adapter, filehdr_size + img_hdrs_size, fw);
3639         if (!fsec) {
3640                 dev_err(&adapter->pdev->dev,
3641                         "Invalid Cookie. UFI corrupted ?\n");
3642                 return -1;
3643         }
3644         for (i = 0; i < num_comp; i++) {
3645                 if (!is_comp_in_ufi(adapter, fsec, pflashcomp[i].img_type))
3646                         continue;
3647
3648                 if ((pflashcomp[i].optype == OPTYPE_NCSI_FW) &&
3649                     memcmp(adapter->fw_ver, "3.102.148.0", 11) < 0)
3650                         continue;
3651
3652                 if (pflashcomp[i].optype == OPTYPE_PHY_FW  &&
3653                     !phy_flashing_required(adapter))
3654                                 continue;
3655
3656                 if (pflashcomp[i].optype == OPTYPE_REDBOOT) {
3657                         redboot = be_flash_redboot(adapter, fw->data,
3658                                 pflashcomp[i].offset, pflashcomp[i].size,
3659                                 filehdr_size + img_hdrs_size);
3660                         if (!redboot)
3661                                 continue;
3662                 }
3663
3664                 p = fw->data;
3665                 p += filehdr_size + pflashcomp[i].offset + img_hdrs_size;
3666                 if (p + pflashcomp[i].size > fw->data + fw->size)
3667                         return -1;
3668
3669                 status = be_flash(adapter, p, flash_cmd, pflashcomp[i].optype,
3670                                         pflashcomp[i].size);
3671                 if (status) {
3672                         dev_err(&adapter->pdev->dev,
3673                                 "Flashing section type %d failed.\n",
3674                                 pflashcomp[i].img_type);
3675                         return status;
3676                 }
3677         }
3678         return 0;
3679 }
3680
3681 static int be_flash_skyhawk(struct be_adapter *adapter,
3682                 const struct firmware *fw,
3683                 struct be_dma_mem *flash_cmd, int num_of_images)
3684 {
3685         int status = 0, i, filehdr_size = 0;
3686         int img_offset, img_size, img_optype, redboot;
3687         int img_hdrs_size = num_of_images * sizeof(struct image_hdr);
3688         const u8 *p = fw->data;
3689         struct flash_section_info *fsec = NULL;
3690
3691         filehdr_size = sizeof(struct flash_file_hdr_g3);
3692         fsec = get_fsec_info(adapter, filehdr_size + img_hdrs_size, fw);
3693         if (!fsec) {
3694                 dev_err(&adapter->pdev->dev,
3695                         "Invalid Cookie. UFI corrupted ?\n");
3696                 return -1;
3697         }
3698
3699         for (i = 0; i < le32_to_cpu(fsec->fsec_hdr.num_images); i++) {
3700                 img_offset = le32_to_cpu(fsec->fsec_entry[i].offset);
3701                 img_size   = le32_to_cpu(fsec->fsec_entry[i].pad_size);
3702
3703                 switch (le32_to_cpu(fsec->fsec_entry[i].type)) {
3704                 case IMAGE_FIRMWARE_iSCSI:
3705                         img_optype = OPTYPE_ISCSI_ACTIVE;
3706                         break;
3707                 case IMAGE_BOOT_CODE:
3708                         img_optype = OPTYPE_REDBOOT;
3709                         break;
3710                 case IMAGE_OPTION_ROM_ISCSI:
3711                         img_optype = OPTYPE_BIOS;
3712                         break;
3713                 case IMAGE_OPTION_ROM_PXE:
3714                         img_optype = OPTYPE_PXE_BIOS;
3715                         break;
3716                 case IMAGE_OPTION_ROM_FCoE:
3717                         img_optype = OPTYPE_FCOE_BIOS;
3718                         break;
3719                 case IMAGE_FIRMWARE_BACKUP_iSCSI:
3720                         img_optype = OPTYPE_ISCSI_BACKUP;
3721                         break;
3722                 case IMAGE_NCSI:
3723                         img_optype = OPTYPE_NCSI_FW;
3724                         break;
3725                 default:
3726                         continue;
3727                 }
3728
3729                 if (img_optype == OPTYPE_REDBOOT) {
3730                         redboot = be_flash_redboot(adapter, fw->data,
3731                                         img_offset, img_size,
3732                                         filehdr_size + img_hdrs_size);
3733                         if (!redboot)
3734                                 continue;
3735                 }
3736
3737                 p = fw->data;
3738                 p += filehdr_size + img_offset + img_hdrs_size;
3739                 if (p + img_size > fw->data + fw->size)
3740                         return -1;
3741
3742                 status = be_flash(adapter, p, flash_cmd, img_optype, img_size);
3743                 if (status) {
3744                         dev_err(&adapter->pdev->dev,
3745                                 "Flashing section type %d failed.\n",
3746                                 fsec->fsec_entry[i].type);
3747                         return status;
3748                 }
3749         }
3750         return 0;
3751 }
3752
3753 static int lancer_fw_download(struct be_adapter *adapter,
3754                                 const struct firmware *fw)
3755 {
3756 #define LANCER_FW_DOWNLOAD_CHUNK      (32 * 1024)
3757 #define LANCER_FW_DOWNLOAD_LOCATION   "/prg"
3758         struct be_dma_mem flash_cmd;
3759         const u8 *data_ptr = NULL;
3760         u8 *dest_image_ptr = NULL;
3761         size_t image_size = 0;
3762         u32 chunk_size = 0;
3763         u32 data_written = 0;
3764         u32 offset = 0;
3765         int status = 0;
3766         u8 add_status = 0;
3767         u8 change_status;
3768
3769         if (!IS_ALIGNED(fw->size, sizeof(u32))) {
3770                 dev_err(&adapter->pdev->dev,
3771                         "FW Image not properly aligned. "
3772                         "Length must be 4 byte aligned.\n");
3773                 status = -EINVAL;
3774                 goto lancer_fw_exit;
3775         }
3776
3777         flash_cmd.size = sizeof(struct lancer_cmd_req_write_object)
3778                                 + LANCER_FW_DOWNLOAD_CHUNK;
3779         flash_cmd.va = dma_alloc_coherent(&adapter->pdev->dev, flash_cmd.size,
3780                                           &flash_cmd.dma, GFP_KERNEL);
3781         if (!flash_cmd.va) {
3782                 status = -ENOMEM;
3783                 goto lancer_fw_exit;
3784         }
3785
3786         dest_image_ptr = flash_cmd.va +
3787                                 sizeof(struct lancer_cmd_req_write_object);
3788         image_size = fw->size;
3789         data_ptr = fw->data;
3790
3791         while (image_size) {
3792                 chunk_size = min_t(u32, image_size, LANCER_FW_DOWNLOAD_CHUNK);
3793
3794                 /* Copy the image chunk content. */
3795                 memcpy(dest_image_ptr, data_ptr, chunk_size);
3796
3797                 status = lancer_cmd_write_object(adapter, &flash_cmd,
3798                                                  chunk_size, offset,
3799                                                  LANCER_FW_DOWNLOAD_LOCATION,
3800                                                  &data_written, &change_status,
3801                                                  &add_status);
3802                 if (status)
3803                         break;
3804
3805                 offset += data_written;
3806                 data_ptr += data_written;
3807                 image_size -= data_written;
3808         }
3809
3810         if (!status) {
3811                 /* Commit the FW written */
3812                 status = lancer_cmd_write_object(adapter, &flash_cmd,
3813                                                  0, offset,
3814                                                  LANCER_FW_DOWNLOAD_LOCATION,
3815                                                  &data_written, &change_status,
3816                                                  &add_status);
3817         }
3818
3819         dma_free_coherent(&adapter->pdev->dev, flash_cmd.size, flash_cmd.va,
3820                                 flash_cmd.dma);
3821         if (status) {
3822                 dev_err(&adapter->pdev->dev,
3823                         "Firmware load error. "
3824                         "Status code: 0x%x Additional Status: 0x%x\n",
3825                         status, add_status);
3826                 goto lancer_fw_exit;
3827         }
3828
3829         if (change_status == LANCER_FW_RESET_NEEDED) {
3830                 dev_info(&adapter->pdev->dev,
3831                          "Resetting adapter to activate new FW\n");
3832                 status = lancer_physdev_ctrl(adapter,
3833                                              PHYSDEV_CONTROL_FW_RESET_MASK);
3834                 if (status) {
3835                         dev_err(&adapter->pdev->dev,
3836                                 "Adapter busy for FW reset.\n"
3837                                 "New FW will not be active.\n");
3838                         goto lancer_fw_exit;
3839                 }
3840         } else if (change_status != LANCER_NO_RESET_NEEDED) {
3841                         dev_err(&adapter->pdev->dev,
3842                                 "System reboot required for new FW"
3843                                 " to be active\n");
3844         }
3845
3846         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
3847 lancer_fw_exit:
3848         return status;
3849 }
3850
3851 #define UFI_TYPE2               2
3852 #define UFI_TYPE3               3
3853 #define UFI_TYPE3R              10
3854 #define UFI_TYPE4               4
3855 static int be_get_ufi_type(struct be_adapter *adapter,
3856                            struct flash_file_hdr_g3 *fhdr)
3857 {
3858         if (fhdr == NULL)
3859                 goto be_get_ufi_exit;
3860
3861         if (skyhawk_chip(adapter) && fhdr->build[0] == '4')
3862                 return UFI_TYPE4;
3863         else if (BE3_chip(adapter) && fhdr->build[0] == '3') {
3864                 if (fhdr->asic_type_rev == 0x10)
3865                         return UFI_TYPE3R;
3866                 else
3867                         return UFI_TYPE3;
3868         } else if (BE2_chip(adapter) && fhdr->build[0] == '2')
3869                 return UFI_TYPE2;
3870
3871 be_get_ufi_exit:
3872         dev_err(&adapter->pdev->dev,
3873                 "UFI and Interface are not compatible for flashing\n");
3874         return -1;
3875 }
3876
3877 static int be_fw_download(struct be_adapter *adapter, const struct firmware* fw)
3878 {
3879         struct flash_file_hdr_g3 *fhdr3;
3880         struct image_hdr *img_hdr_ptr = NULL;
3881         struct be_dma_mem flash_cmd;
3882         const u8 *p;
3883         int status = 0, i = 0, num_imgs = 0, ufi_type = 0;
3884
3885         flash_cmd.size = sizeof(struct be_cmd_write_flashrom);
3886         flash_cmd.va = dma_alloc_coherent(&adapter->pdev->dev, flash_cmd.size,
3887                                           &flash_cmd.dma, GFP_KERNEL);
3888         if (!flash_cmd.va) {
3889                 status = -ENOMEM;
3890                 goto be_fw_exit;
3891         }
3892
3893         p = fw->data;
3894         fhdr3 = (struct flash_file_hdr_g3 *)p;
3895
3896         ufi_type = be_get_ufi_type(adapter, fhdr3);
3897
3898         num_imgs = le32_to_cpu(fhdr3->num_imgs);
3899         for (i = 0; i < num_imgs; i++) {
3900                 img_hdr_ptr = (struct image_hdr *)(fw->data +
3901                                 (sizeof(struct flash_file_hdr_g3) +
3902                                  i * sizeof(struct image_hdr)));
3903                 if (le32_to_cpu(img_hdr_ptr->imageid) == 1) {
3904                         switch (ufi_type) {
3905                         case UFI_TYPE4:
3906                                 status = be_flash_skyhawk(adapter, fw,
3907                                                         &flash_cmd, num_imgs);
3908                                 break;
3909                         case UFI_TYPE3R:
3910                                 status = be_flash_BEx(adapter, fw, &flash_cmd,
3911                                                       num_imgs);
3912                                 break;
3913                         case UFI_TYPE3:
3914                                 /* Do not flash this ufi on BE3-R cards */
3915                                 if (adapter->asic_rev < 0x10)
3916                                         status = be_flash_BEx(adapter, fw,
3917                                                               &flash_cmd,
3918                                                               num_imgs);
3919                                 else {
3920                                         status = -1;
3921                                         dev_err(&adapter->pdev->dev,
3922                                                 "Can't load BE3 UFI on BE3R\n");
3923                                 }
3924                         }
3925                 }
3926         }
3927
3928         if (ufi_type == UFI_TYPE2)
3929                 status = be_flash_BEx(adapter, fw, &flash_cmd, 0);
3930         else if (ufi_type == -1)
3931                 status = -1;
3932
3933         dma_free_coherent(&adapter->pdev->dev, flash_cmd.size, flash_cmd.va,
3934                           flash_cmd.dma);
3935         if (status) {
3936                 dev_err(&adapter->pdev->dev, "Firmware load error\n");
3937                 goto be_fw_exit;
3938         }
3939
3940         dev_info(&adapter->pdev->dev, "Firmware flashed successfully\n");
3941
3942 be_fw_exit:
3943         return status;
3944 }
3945
3946 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
3947 {
3948         const struct firmware *fw;
3949         int status;
3950
3951         if (!netif_running(adapter->netdev)) {
3952                 dev_err(&adapter->pdev->dev,
3953                         "Firmware load not allowed (interface is down)\n");
3954                 return -1;
3955         }
3956
3957         status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
3958         if (status)
3959                 goto fw_exit;
3960
3961         dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
3962
3963         if (lancer_chip(adapter))
3964                 status = lancer_fw_download(adapter, fw);
3965         else
3966                 status = be_fw_download(adapter, fw);
3967
3968         if (!status)
3969                 be_cmd_get_fw_ver(adapter, adapter->fw_ver,
3970                                   adapter->fw_on_flash);
3971
3972 fw_exit:
3973         release_firmware(fw);
3974         return status;
3975 }
3976
3977 static int be_ndo_bridge_setlink(struct net_device *dev,
3978                                     struct nlmsghdr *nlh)
3979 {
3980         struct be_adapter *adapter = netdev_priv(dev);
3981         struct nlattr *attr, *br_spec;
3982         int rem;
3983         int status = 0;
3984         u16 mode = 0;
3985
3986         if (!sriov_enabled(adapter))
3987                 return -EOPNOTSUPP;
3988
3989         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3990
3991         nla_for_each_nested(attr, br_spec, rem) {
3992                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
3993                         continue;
3994
3995                 mode = nla_get_u16(attr);
3996                 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
3997                         return -EINVAL;
3998
3999                 status = be_cmd_set_hsw_config(adapter, 0, 0,
4000                                                adapter->if_handle,
4001                                                mode == BRIDGE_MODE_VEPA ?
4002                                                PORT_FWD_TYPE_VEPA :
4003                                                PORT_FWD_TYPE_VEB);
4004                 if (status)
4005                         goto err;
4006
4007                 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
4008                          mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4009
4010                 return status;
4011         }
4012 err:
4013         dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
4014                 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4015
4016         return status;
4017 }
4018
4019 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4020                                     struct net_device *dev,
4021                                     u32 filter_mask)
4022 {
4023         struct be_adapter *adapter = netdev_priv(dev);
4024         int status = 0;
4025         u8 hsw_mode;
4026
4027         if (!sriov_enabled(adapter))
4028                 return 0;
4029
4030         /* BE and Lancer chips support VEB mode only */
4031         if (BEx_chip(adapter) || lancer_chip(adapter)) {
4032                 hsw_mode = PORT_FWD_TYPE_VEB;
4033         } else {
4034                 status = be_cmd_get_hsw_config(adapter, NULL, 0,
4035                                                adapter->if_handle, &hsw_mode);
4036                 if (status)
4037                         return 0;
4038         }
4039
4040         return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
4041                                        hsw_mode == PORT_FWD_TYPE_VEPA ?
4042                                        BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB);
4043 }
4044
4045 static const struct net_device_ops be_netdev_ops = {
4046         .ndo_open               = be_open,
4047         .ndo_stop               = be_close,
4048         .ndo_start_xmit         = be_xmit,
4049         .ndo_set_rx_mode        = be_set_rx_mode,
4050         .ndo_set_mac_address    = be_mac_addr_set,
4051         .ndo_change_mtu         = be_change_mtu,
4052         .ndo_get_stats64        = be_get_stats64,
4053         .ndo_validate_addr      = eth_validate_addr,
4054         .ndo_vlan_rx_add_vid    = be_vlan_add_vid,
4055         .ndo_vlan_rx_kill_vid   = be_vlan_rem_vid,
4056         .ndo_set_vf_mac         = be_set_vf_mac,
4057         .ndo_set_vf_vlan        = be_set_vf_vlan,
4058         .ndo_set_vf_tx_rate     = be_set_vf_tx_rate,
4059         .ndo_get_vf_config      = be_get_vf_config,
4060 #ifdef CONFIG_NET_POLL_CONTROLLER
4061         .ndo_poll_controller    = be_netpoll,
4062 #endif
4063         .ndo_bridge_setlink     = be_ndo_bridge_setlink,
4064         .ndo_bridge_getlink     = be_ndo_bridge_getlink,
4065 #ifdef CONFIG_NET_RX_BUSY_POLL
4066         .ndo_busy_poll          = be_busy_poll
4067 #endif
4068 };
4069
4070 static void be_netdev_init(struct net_device *netdev)
4071 {
4072         struct be_adapter *adapter = netdev_priv(netdev);
4073
4074         netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
4075                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
4076                 NETIF_F_HW_VLAN_CTAG_TX;
4077         if (be_multi_rxq(adapter))
4078                 netdev->hw_features |= NETIF_F_RXHASH;
4079
4080         netdev->features |= netdev->hw_features |
4081                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
4082
4083         netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
4084                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
4085
4086         netdev->priv_flags |= IFF_UNICAST_FLT;
4087
4088         netdev->flags |= IFF_MULTICAST;
4089
4090         netif_set_gso_max_size(netdev, 65535 - ETH_HLEN);
4091
4092         netdev->netdev_ops = &be_netdev_ops;
4093
4094         SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
4095 }
4096
4097 static void be_unmap_pci_bars(struct be_adapter *adapter)
4098 {
4099         if (adapter->csr)
4100                 pci_iounmap(adapter->pdev, adapter->csr);
4101         if (adapter->db)
4102                 pci_iounmap(adapter->pdev, adapter->db);
4103 }
4104
4105 static int db_bar(struct be_adapter *adapter)
4106 {
4107         if (lancer_chip(adapter) || !be_physfn(adapter))
4108                 return 0;
4109         else
4110                 return 4;
4111 }
4112
4113 static int be_roce_map_pci_bars(struct be_adapter *adapter)
4114 {
4115         if (skyhawk_chip(adapter)) {
4116                 adapter->roce_db.size = 4096;
4117                 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
4118                                                               db_bar(adapter));
4119                 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
4120                                                                db_bar(adapter));
4121         }
4122         return 0;
4123 }
4124
4125 static int be_map_pci_bars(struct be_adapter *adapter)
4126 {
4127         u8 __iomem *addr;
4128
4129         if (BEx_chip(adapter) && be_physfn(adapter)) {
4130                 adapter->csr = pci_iomap(adapter->pdev, 2, 0);
4131                 if (adapter->csr == NULL)
4132                         return -ENOMEM;
4133         }
4134
4135         addr = pci_iomap(adapter->pdev, db_bar(adapter), 0);
4136         if (addr == NULL)
4137                 goto pci_map_err;
4138         adapter->db = addr;
4139
4140         be_roce_map_pci_bars(adapter);
4141         return 0;
4142
4143 pci_map_err:
4144         be_unmap_pci_bars(adapter);
4145         return -ENOMEM;
4146 }
4147
4148 static void be_ctrl_cleanup(struct be_adapter *adapter)
4149 {
4150         struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
4151
4152         be_unmap_pci_bars(adapter);
4153
4154         if (mem->va)
4155                 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
4156                                   mem->dma);
4157
4158         mem = &adapter->rx_filter;
4159         if (mem->va)
4160                 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
4161                                   mem->dma);
4162 }
4163
4164 static int be_ctrl_init(struct be_adapter *adapter)
4165 {
4166         struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
4167         struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
4168         struct be_dma_mem *rx_filter = &adapter->rx_filter;
4169         u32 sli_intf;
4170         int status;
4171
4172         pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
4173         adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
4174                                  SLI_INTF_FAMILY_SHIFT;
4175         adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
4176
4177         status = be_map_pci_bars(adapter);
4178         if (status)
4179                 goto done;
4180
4181         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
4182         mbox_mem_alloc->va = dma_alloc_coherent(&adapter->pdev->dev,
4183                                                 mbox_mem_alloc->size,
4184                                                 &mbox_mem_alloc->dma,
4185                                                 GFP_KERNEL);
4186         if (!mbox_mem_alloc->va) {
4187                 status = -ENOMEM;
4188                 goto unmap_pci_bars;
4189         }
4190         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
4191         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
4192         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
4193         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
4194
4195         rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
4196         rx_filter->va = dma_zalloc_coherent(&adapter->pdev->dev,
4197                                             rx_filter->size, &rx_filter->dma,
4198                                             GFP_KERNEL);
4199         if (rx_filter->va == NULL) {
4200                 status = -ENOMEM;
4201                 goto free_mbox;
4202         }
4203
4204         mutex_init(&adapter->mbox_lock);
4205         spin_lock_init(&adapter->mcc_lock);
4206         spin_lock_init(&adapter->mcc_cq_lock);
4207
4208         init_completion(&adapter->flash_compl);
4209         pci_save_state(adapter->pdev);
4210         return 0;
4211
4212 free_mbox:
4213         dma_free_coherent(&adapter->pdev->dev, mbox_mem_alloc->size,
4214                           mbox_mem_alloc->va, mbox_mem_alloc->dma);
4215
4216 unmap_pci_bars:
4217         be_unmap_pci_bars(adapter);
4218
4219 done:
4220         return status;
4221 }
4222
4223 static void be_stats_cleanup(struct be_adapter *adapter)
4224 {
4225         struct be_dma_mem *cmd = &adapter->stats_cmd;
4226
4227         if (cmd->va)
4228                 dma_free_coherent(&adapter->pdev->dev, cmd->size,
4229                                   cmd->va, cmd->dma);
4230 }
4231
4232 static int be_stats_init(struct be_adapter *adapter)
4233 {
4234         struct be_dma_mem *cmd = &adapter->stats_cmd;
4235
4236         if (lancer_chip(adapter))
4237                 cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
4238         else if (BE2_chip(adapter))
4239                 cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
4240         else if (BE3_chip(adapter))
4241                 cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
4242         else
4243                 /* ALL non-BE ASICs */
4244                 cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
4245
4246         cmd->va = dma_zalloc_coherent(&adapter->pdev->dev, cmd->size, &cmd->dma,
4247                                       GFP_KERNEL);
4248         if (cmd->va == NULL)
4249                 return -1;
4250         return 0;
4251 }
4252
4253 static void be_remove(struct pci_dev *pdev)
4254 {
4255         struct be_adapter *adapter = pci_get_drvdata(pdev);
4256
4257         if (!adapter)
4258                 return;
4259
4260         be_roce_dev_remove(adapter);
4261         be_intr_set(adapter, false);
4262
4263         cancel_delayed_work_sync(&adapter->func_recovery_work);
4264
4265         unregister_netdev(adapter->netdev);
4266
4267         be_clear(adapter);
4268
4269         /* tell fw we're done with firing cmds */
4270         be_cmd_fw_clean(adapter);
4271
4272         be_stats_cleanup(adapter);
4273
4274         be_ctrl_cleanup(adapter);
4275
4276         pci_disable_pcie_error_reporting(pdev);
4277
4278         pci_release_regions(pdev);
4279         pci_disable_device(pdev);
4280
4281         free_netdev(adapter->netdev);
4282 }
4283
4284 bool be_is_wol_supported(struct be_adapter *adapter)
4285 {
4286         return ((adapter->wol_cap & BE_WOL_CAP) &&
4287                 !be_is_wol_excluded(adapter)) ? true : false;
4288 }
4289
4290 u32 be_get_fw_log_level(struct be_adapter *adapter)
4291 {
4292         struct be_dma_mem extfat_cmd;
4293         struct be_fat_conf_params *cfgs;
4294         int status;
4295         u32 level = 0;
4296         int j;
4297
4298         if (lancer_chip(adapter))
4299                 return 0;
4300
4301         memset(&extfat_cmd, 0, sizeof(struct be_dma_mem));
4302         extfat_cmd.size = sizeof(struct be_cmd_resp_get_ext_fat_caps);
4303         extfat_cmd.va = pci_alloc_consistent(adapter->pdev, extfat_cmd.size,
4304                                              &extfat_cmd.dma);
4305
4306         if (!extfat_cmd.va) {
4307                 dev_err(&adapter->pdev->dev, "%s: Memory allocation failure\n",
4308                         __func__);
4309                 goto err;
4310         }
4311
4312         status = be_cmd_get_ext_fat_capabilites(adapter, &extfat_cmd);
4313         if (!status) {
4314                 cfgs = (struct be_fat_conf_params *)(extfat_cmd.va +
4315                                                 sizeof(struct be_cmd_resp_hdr));
4316                 for (j = 0; j < le32_to_cpu(cfgs->module[0].num_modes); j++) {
4317                         if (cfgs->module[0].trace_lvl[j].mode == MODE_UART)
4318                                 level = cfgs->module[0].trace_lvl[j].dbg_lvl;
4319                 }
4320         }
4321         pci_free_consistent(adapter->pdev, extfat_cmd.size, extfat_cmd.va,
4322                             extfat_cmd.dma);
4323 err:
4324         return level;
4325 }
4326
4327 static int be_get_initial_config(struct be_adapter *adapter)
4328 {
4329         int status;
4330         u32 level;
4331
4332         status = be_cmd_get_cntl_attributes(adapter);
4333         if (status)
4334                 return status;
4335
4336         status = be_cmd_get_acpi_wol_cap(adapter);
4337         if (status) {
4338                 /* in case of a failure to get wol capabillities
4339                  * check the exclusion list to determine WOL capability */
4340                 if (!be_is_wol_excluded(adapter))
4341                         adapter->wol_cap |= BE_WOL_CAP;
4342         }
4343
4344         if (be_is_wol_supported(adapter))
4345                 adapter->wol = true;
4346
4347         /* Must be a power of 2 or else MODULO will BUG_ON */
4348         adapter->be_get_temp_freq = 64;
4349
4350         level = be_get_fw_log_level(adapter);
4351         adapter->msg_enable = level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4352
4353         adapter->cfg_num_qs = netif_get_num_default_rss_queues();
4354         return 0;
4355 }
4356
4357 static int lancer_recover_func(struct be_adapter *adapter)
4358 {
4359         struct device *dev = &adapter->pdev->dev;
4360         int status;
4361
4362         status = lancer_test_and_set_rdy_state(adapter);
4363         if (status)
4364                 goto err;
4365
4366         if (netif_running(adapter->netdev))
4367                 be_close(adapter->netdev);
4368
4369         be_clear(adapter);
4370
4371         be_clear_all_error(adapter);
4372
4373         status = be_setup(adapter);
4374         if (status)
4375                 goto err;
4376
4377         if (netif_running(adapter->netdev)) {
4378                 status = be_open(adapter->netdev);
4379                 if (status)
4380                         goto err;
4381         }
4382
4383         dev_err(dev, "Adapter recovery successful\n");
4384         return 0;
4385 err:
4386         if (status == -EAGAIN)
4387                 dev_err(dev, "Waiting for resource provisioning\n");
4388         else
4389                 dev_err(dev, "Adapter recovery failed\n");
4390
4391         return status;
4392 }
4393
4394 static void be_func_recovery_task(struct work_struct *work)
4395 {
4396         struct be_adapter *adapter =
4397                 container_of(work, struct be_adapter,  func_recovery_work.work);
4398         int status = 0;
4399
4400         be_detect_error(adapter);
4401
4402         if (adapter->hw_error && lancer_chip(adapter)) {
4403
4404                 rtnl_lock();
4405                 netif_device_detach(adapter->netdev);
4406                 rtnl_unlock();
4407
4408                 status = lancer_recover_func(adapter);
4409                 if (!status)
4410                         netif_device_attach(adapter->netdev);
4411         }
4412
4413         /* In Lancer, for all errors other than provisioning error (-EAGAIN),
4414          * no need to attempt further recovery.
4415          */
4416         if (!status || status == -EAGAIN)
4417                 schedule_delayed_work(&adapter->func_recovery_work,
4418                                       msecs_to_jiffies(1000));
4419 }
4420
4421 static void be_worker(struct work_struct *work)
4422 {
4423         struct be_adapter *adapter =
4424                 container_of(work, struct be_adapter, work.work);
4425         struct be_rx_obj *rxo;
4426         int i;
4427
4428         /* when interrupts are not yet enabled, just reap any pending
4429         * mcc completions */
4430         if (!netif_running(adapter->netdev)) {
4431                 local_bh_disable();
4432                 be_process_mcc(adapter);
4433                 local_bh_enable();
4434                 goto reschedule;
4435         }
4436
4437         if (!adapter->stats_cmd_sent) {
4438                 if (lancer_chip(adapter))
4439                         lancer_cmd_get_pport_stats(adapter,
4440                                                 &adapter->stats_cmd);
4441                 else
4442                         be_cmd_get_stats(adapter, &adapter->stats_cmd);
4443         }
4444
4445         if (be_physfn(adapter) &&
4446             MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
4447                 be_cmd_get_die_temperature(adapter);
4448
4449         for_all_rx_queues(adapter, rxo, i) {
4450                 /* Replenish RX-queues starved due to memory
4451                  * allocation failures.
4452                  */
4453                 if (rxo->rx_post_starved)
4454                         be_post_rx_frags(rxo, GFP_KERNEL);
4455         }
4456
4457         be_eqd_update(adapter);
4458
4459 reschedule:
4460         adapter->work_counter++;
4461         schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
4462 }
4463
4464 /* If any VFs are already enabled don't FLR the PF */
4465 static bool be_reset_required(struct be_adapter *adapter)
4466 {
4467         return pci_num_vf(adapter->pdev) ? false : true;
4468 }
4469
4470 static char *mc_name(struct be_adapter *adapter)
4471 {
4472         if (adapter->function_mode & FLEX10_MODE)
4473                 return "FLEX10";
4474         else if (adapter->function_mode & VNIC_MODE)
4475                 return "vNIC";
4476         else if (adapter->function_mode & UMC_ENABLED)
4477                 return "UMC";
4478         else
4479                 return "";
4480 }
4481
4482 static inline char *func_name(struct be_adapter *adapter)
4483 {
4484         return be_physfn(adapter) ? "PF" : "VF";
4485 }
4486
4487 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
4488 {
4489         int status = 0;
4490         struct be_adapter *adapter;
4491         struct net_device *netdev;
4492         char port_name;
4493
4494         status = pci_enable_device(pdev);
4495         if (status)
4496                 goto do_none;
4497
4498         status = pci_request_regions(pdev, DRV_NAME);
4499         if (status)
4500                 goto disable_dev;
4501         pci_set_master(pdev);
4502
4503         netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
4504         if (netdev == NULL) {
4505                 status = -ENOMEM;
4506                 goto rel_reg;
4507         }
4508         adapter = netdev_priv(netdev);
4509         adapter->pdev = pdev;
4510         pci_set_drvdata(pdev, adapter);
4511         adapter->netdev = netdev;
4512         SET_NETDEV_DEV(netdev, &pdev->dev);
4513
4514         status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
4515         if (!status) {
4516                 netdev->features |= NETIF_F_HIGHDMA;
4517         } else {
4518                 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
4519                 if (status) {
4520                         dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
4521                         goto free_netdev;
4522                 }
4523         }
4524
4525         if (be_physfn(adapter)) {
4526                 status = pci_enable_pcie_error_reporting(pdev);
4527                 if (!status)
4528                         dev_info(&pdev->dev, "PCIe error reporting enabled\n");
4529         }
4530
4531         status = be_ctrl_init(adapter);
4532         if (status)
4533                 goto free_netdev;
4534
4535         /* sync up with fw's ready state */
4536         if (be_physfn(adapter)) {
4537                 status = be_fw_wait_ready(adapter);
4538                 if (status)
4539                         goto ctrl_clean;
4540         }
4541
4542         if (be_reset_required(adapter)) {
4543                 status = be_cmd_reset_function(adapter);
4544                 if (status)
4545                         goto ctrl_clean;
4546
4547                 /* Wait for interrupts to quiesce after an FLR */
4548                 msleep(100);
4549         }
4550
4551         /* Allow interrupts for other ULPs running on NIC function */
4552         be_intr_set(adapter, true);
4553
4554         /* tell fw we're ready to fire cmds */
4555         status = be_cmd_fw_init(adapter);
4556         if (status)
4557                 goto ctrl_clean;
4558
4559         status = be_stats_init(adapter);
4560         if (status)
4561                 goto ctrl_clean;
4562
4563         status = be_get_initial_config(adapter);
4564         if (status)
4565                 goto stats_clean;
4566
4567         INIT_DELAYED_WORK(&adapter->work, be_worker);
4568         INIT_DELAYED_WORK(&adapter->func_recovery_work, be_func_recovery_task);
4569         adapter->rx_fc = adapter->tx_fc = true;
4570
4571         status = be_setup(adapter);
4572         if (status)
4573                 goto stats_clean;
4574
4575         be_netdev_init(netdev);
4576         status = register_netdev(netdev);
4577         if (status != 0)
4578                 goto unsetup;
4579
4580         be_roce_dev_add(adapter);
4581
4582         schedule_delayed_work(&adapter->func_recovery_work,
4583                               msecs_to_jiffies(1000));
4584
4585         be_cmd_query_port_name(adapter, &port_name);
4586
4587         dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
4588                  func_name(adapter), mc_name(adapter), port_name);
4589
4590         return 0;
4591
4592 unsetup:
4593         be_clear(adapter);
4594 stats_clean:
4595         be_stats_cleanup(adapter);
4596 ctrl_clean:
4597         be_ctrl_cleanup(adapter);
4598 free_netdev:
4599         free_netdev(netdev);
4600 rel_reg:
4601         pci_release_regions(pdev);
4602 disable_dev:
4603         pci_disable_device(pdev);
4604 do_none:
4605         dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
4606         return status;
4607 }
4608
4609 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
4610 {
4611         struct be_adapter *adapter = pci_get_drvdata(pdev);
4612         struct net_device *netdev =  adapter->netdev;
4613
4614         if (adapter->wol)
4615                 be_setup_wol(adapter, true);
4616
4617         be_intr_set(adapter, false);
4618         cancel_delayed_work_sync(&adapter->func_recovery_work);
4619
4620         netif_device_detach(netdev);
4621         if (netif_running(netdev)) {
4622                 rtnl_lock();
4623                 be_close(netdev);
4624                 rtnl_unlock();
4625         }
4626         be_clear(adapter);
4627
4628         pci_save_state(pdev);
4629         pci_disable_device(pdev);
4630         pci_set_power_state(pdev, pci_choose_state(pdev, state));
4631         return 0;
4632 }
4633
4634 static int be_resume(struct pci_dev *pdev)
4635 {
4636         int status = 0;
4637         struct be_adapter *adapter = pci_get_drvdata(pdev);
4638         struct net_device *netdev =  adapter->netdev;
4639
4640         netif_device_detach(netdev);
4641
4642         status = pci_enable_device(pdev);
4643         if (status)
4644                 return status;
4645
4646         pci_set_power_state(pdev, PCI_D0);
4647         pci_restore_state(pdev);
4648
4649         status = be_fw_wait_ready(adapter);
4650         if (status)
4651                 return status;
4652
4653         be_intr_set(adapter, true);
4654         /* tell fw we're ready to fire cmds */
4655         status = be_cmd_fw_init(adapter);
4656         if (status)
4657                 return status;
4658
4659         be_setup(adapter);
4660         if (netif_running(netdev)) {
4661                 rtnl_lock();
4662                 be_open(netdev);
4663                 rtnl_unlock();
4664         }
4665
4666         schedule_delayed_work(&adapter->func_recovery_work,
4667                               msecs_to_jiffies(1000));
4668         netif_device_attach(netdev);
4669
4670         if (adapter->wol)
4671                 be_setup_wol(adapter, false);
4672
4673         return 0;
4674 }
4675
4676 /*
4677  * An FLR will stop BE from DMAing any data.
4678  */
4679 static void be_shutdown(struct pci_dev *pdev)
4680 {
4681         struct be_adapter *adapter = pci_get_drvdata(pdev);
4682
4683         if (!adapter)
4684                 return;
4685
4686         cancel_delayed_work_sync(&adapter->work);
4687         cancel_delayed_work_sync(&adapter->func_recovery_work);
4688
4689         netif_device_detach(adapter->netdev);
4690
4691         be_cmd_reset_function(adapter);
4692
4693         pci_disable_device(pdev);
4694 }
4695
4696 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
4697                                 pci_channel_state_t state)
4698 {
4699         struct be_adapter *adapter = pci_get_drvdata(pdev);
4700         struct net_device *netdev =  adapter->netdev;
4701
4702         dev_err(&adapter->pdev->dev, "EEH error detected\n");
4703
4704         if (!adapter->eeh_error) {
4705                 adapter->eeh_error = true;
4706
4707                 cancel_delayed_work_sync(&adapter->func_recovery_work);
4708
4709                 rtnl_lock();
4710                 netif_device_detach(netdev);
4711                 if (netif_running(netdev))
4712                         be_close(netdev);
4713                 rtnl_unlock();
4714
4715                 be_clear(adapter);
4716         }
4717
4718         if (state == pci_channel_io_perm_failure)
4719                 return PCI_ERS_RESULT_DISCONNECT;
4720
4721         pci_disable_device(pdev);
4722
4723         /* The error could cause the FW to trigger a flash debug dump.
4724          * Resetting the card while flash dump is in progress
4725          * can cause it not to recover; wait for it to finish.
4726          * Wait only for first function as it is needed only once per
4727          * adapter.
4728          */
4729         if (pdev->devfn == 0)
4730                 ssleep(30);
4731
4732         return PCI_ERS_RESULT_NEED_RESET;
4733 }
4734
4735 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
4736 {
4737         struct be_adapter *adapter = pci_get_drvdata(pdev);
4738         int status;
4739
4740         dev_info(&adapter->pdev->dev, "EEH reset\n");
4741
4742         status = pci_enable_device(pdev);
4743         if (status)
4744                 return PCI_ERS_RESULT_DISCONNECT;
4745
4746         pci_set_master(pdev);
4747         pci_set_power_state(pdev, PCI_D0);
4748         pci_restore_state(pdev);
4749
4750         /* Check if card is ok and fw is ready */
4751         dev_info(&adapter->pdev->dev,
4752                  "Waiting for FW to be ready after EEH reset\n");
4753         status = be_fw_wait_ready(adapter);
4754         if (status)
4755                 return PCI_ERS_RESULT_DISCONNECT;
4756
4757         pci_cleanup_aer_uncorrect_error_status(pdev);
4758         be_clear_all_error(adapter);
4759         return PCI_ERS_RESULT_RECOVERED;
4760 }
4761
4762 static void be_eeh_resume(struct pci_dev *pdev)
4763 {
4764         int status = 0;
4765         struct be_adapter *adapter = pci_get_drvdata(pdev);
4766         struct net_device *netdev =  adapter->netdev;
4767
4768         dev_info(&adapter->pdev->dev, "EEH resume\n");
4769
4770         pci_save_state(pdev);
4771
4772         status = be_cmd_reset_function(adapter);
4773         if (status)
4774                 goto err;
4775
4776         /* tell fw we're ready to fire cmds */
4777         status = be_cmd_fw_init(adapter);
4778         if (status)
4779                 goto err;
4780
4781         status = be_setup(adapter);
4782         if (status)
4783                 goto err;
4784
4785         if (netif_running(netdev)) {
4786                 status = be_open(netdev);
4787                 if (status)
4788                         goto err;
4789         }
4790
4791         schedule_delayed_work(&adapter->func_recovery_work,
4792                               msecs_to_jiffies(1000));
4793         netif_device_attach(netdev);
4794         return;
4795 err:
4796         dev_err(&adapter->pdev->dev, "EEH resume failed\n");
4797 }
4798
4799 static const struct pci_error_handlers be_eeh_handlers = {
4800         .error_detected = be_eeh_err_detected,
4801         .slot_reset = be_eeh_reset,
4802         .resume = be_eeh_resume,
4803 };
4804
4805 static struct pci_driver be_driver = {
4806         .name = DRV_NAME,
4807         .id_table = be_dev_ids,
4808         .probe = be_probe,
4809         .remove = be_remove,
4810         .suspend = be_suspend,
4811         .resume = be_resume,
4812         .shutdown = be_shutdown,
4813         .err_handler = &be_eeh_handlers
4814 };
4815
4816 static int __init be_init_module(void)
4817 {
4818         if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
4819             rx_frag_size != 2048) {
4820                 printk(KERN_WARNING DRV_NAME
4821                         " : Module param rx_frag_size must be 2048/4096/8192."
4822                         " Using 2048\n");
4823                 rx_frag_size = 2048;
4824         }
4825
4826         return pci_register_driver(&be_driver);
4827 }
4828 module_init(be_init_module);
4829
4830 static void __exit be_exit_module(void)
4831 {
4832         pci_unregister_driver(&be_driver);
4833 }
4834 module_exit(be_exit_module);