drivers/net/ethernet/emulex/benet/be.h

   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 #ifndef BE_H
  19 #define BE_H
  20
  21 #include <linux/pci.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/delay.h>
  24 #include <net/tcp.h>
  25 #include <net/ip.h>
  26 #include <net/ipv6.h>
  27 #include <linux/if_vlan.h>
  28 #include <linux/workqueue.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/firmware.h>
  31 #include <linux/slab.h>
  32 #include <linux/u64_stats_sync.h>
  33
  34 #include "be_hw.h"
  35 #include "be_roce.h"
  36
  37 #define DRV_VER                 "10.0.600.0u"
  38 #define DRV_NAME                "be2net"
  39 #define BE_NAME                 "Emulex BladeEngine2"
  40 #define BE3_NAME                "Emulex BladeEngine3"
  41 #define OC_NAME                 "Emulex OneConnect"
  42 #define OC_NAME_BE              OC_NAME "(be3)"
  43 #define OC_NAME_LANCER          OC_NAME "(Lancer)"
  44 #define OC_NAME_SH              OC_NAME "(Skyhawk)"
  45 #define DRV_DESC                "Emulex OneConnect NIC Driver"
  46
  47 #define BE_VENDOR_ID            0x19a2
  48 #define EMULEX_VENDOR_ID        0x10df
  49 #define BE_DEVICE_ID1           0x211
  50 #define BE_DEVICE_ID2           0x221
  51 #define OC_DEVICE_ID1           0x700   /* Device Id for BE2 cards */
  52 #define OC_DEVICE_ID2           0x710   /* Device Id for BE3 cards */
  53 #define OC_DEVICE_ID3           0xe220  /* Device id for Lancer cards */
  54 #define OC_DEVICE_ID4           0xe228   /* Device id for VF in Lancer */
  55 #define OC_DEVICE_ID5           0x720   /* Device Id for Skyhawk cards */
  56 #define OC_DEVICE_ID6           0x728   /* Device id for VF in SkyHawk */
  57 #define OC_SUBSYS_DEVICE_ID1    0xE602
  58 #define OC_SUBSYS_DEVICE_ID2    0xE642
  59 #define OC_SUBSYS_DEVICE_ID3    0xE612
  60 #define OC_SUBSYS_DEVICE_ID4    0xE652
  61
  62 static inline char *nic_name(struct pci_dev *pdev)
  63 {
  64         switch (pdev->device) {
  65         case OC_DEVICE_ID1:
  66                 return OC_NAME;
  67         case OC_DEVICE_ID2:
  68                 return OC_NAME_BE;
  69         case OC_DEVICE_ID3:
  70         case OC_DEVICE_ID4:
  71                 return OC_NAME_LANCER;
  72         case BE_DEVICE_ID2:
  73                 return BE3_NAME;
  74         case OC_DEVICE_ID5:
  75         case OC_DEVICE_ID6:
  76                 return OC_NAME_SH;
  77         default:
  78                 return BE_NAME;
  79         }
  80 }
  81
  82 /* Number of bytes of an RX frame that are copied to skb->data */
  83 #define BE_HDR_LEN              ((u16) 64)
  84 /* allocate extra space to allow tunneling decapsulation without head reallocation */
  85 #define BE_RX_SKB_ALLOC_SIZE (BE_HDR_LEN + 64)
  86
  87 #define BE_MAX_JUMBO_FRAME_SIZE 9018
  88 #define BE_MIN_MTU              256
  89
  90 #define BE_NUM_VLANS_SUPPORTED  64
  91 #define BE_UMC_NUM_VLANS_SUPPORTED      15
  92 #define BE_MAX_EQD              128u
  93 #define BE_MAX_TX_FRAG_COUNT    30
  94
  95 #define EVNT_Q_LEN              1024
  96 #define TX_Q_LEN                2048
  97 #define TX_CQ_LEN               1024
  98 #define RX_Q_LEN                1024    /* Does not support any other value */
  99 #define RX_CQ_LEN               1024
 100 #define MCC_Q_LEN               128     /* total size not to exceed 8 pages */
 101 #define MCC_CQ_LEN              256
 102
 103 #define BE2_MAX_RSS_QS          4
 104 #define BE3_MAX_RSS_QS          16
 105 #define BE3_MAX_TX_QS           16
 106 #define BE3_MAX_EVT_QS          16
 107 #define BE3_SRIOV_MAX_EVT_QS    8
 108
 109 #define MAX_RX_QS               32
 110 #define MAX_EVT_QS              32
 111 #define MAX_TX_QS               32
 112
 113 #define MAX_ROCE_EQS            5
 114 #define MAX_MSIX_VECTORS        32
 115 #define MIN_MSIX_VECTORS        1
 116 #define BE_TX_BUDGET            256
 117 #define BE_NAPI_WEIGHT          64
 118 #define MAX_RX_POST             BE_NAPI_WEIGHT /* Frags posted at a time */
 119 #define RX_FRAGS_REFILL_WM      (RX_Q_LEN - MAX_RX_POST)
 120
 121 #define MAX_VFS                 30 /* Max VFs supported by BE3 FW */
 122 #define FW_VER_LEN              32
 123
 124 struct be_dma_mem {
 125         void *va;
 126         dma_addr_t dma;
 127         u32 size;
 128 };
 129
 130 struct be_queue_info {
 131         struct be_dma_mem dma_mem;
 132         u16 len;
 133         u16 entry_size; /* Size of an element in the queue */
 134         u16 id;
 135         u16 tail, head;
 136         bool created;
 137         atomic_t used;  /* Number of valid elements in the queue */
 138 };
 139
 140 static inline u32 MODULO(u16 val, u16 limit)
 141 {
 142         BUG_ON(limit & (limit - 1));
 143         return val & (limit - 1);
 144 }
 145
 146 static inline void index_adv(u16 *index, u16 val, u16 limit)
 147 {
 148         *index = MODULO((*index + val), limit);
 149 }
 150
 151 static inline void index_inc(u16 *index, u16 limit)
 152 {
 153         *index = MODULO((*index + 1), limit);
 154 }
 155
 156 static inline void *queue_head_node(struct be_queue_info *q)
 157 {
 158         return q->dma_mem.va + q->head * q->entry_size;
 159 }
 160
 161 static inline void *queue_tail_node(struct be_queue_info *q)
 162 {
 163         return q->dma_mem.va + q->tail * q->entry_size;
 164 }
 165
 166 static inline void *queue_index_node(struct be_queue_info *q, u16 index)
 167 {
 168         return q->dma_mem.va + index * q->entry_size;
 169 }
 170
 171 static inline void queue_head_inc(struct be_queue_info *q)
 172 {
 173         index_inc(&q->head, q->len);
 174 }
 175
 176 static inline void index_dec(u16 *index, u16 limit)
 177 {
 178         *index = MODULO((*index - 1), limit);
 179 }
 180
 181 static inline void queue_tail_inc(struct be_queue_info *q)
 182 {
 183         index_inc(&q->tail, q->len);
 184 }
 185
 186 struct be_eq_obj {
 187         struct be_queue_info q;
 188         char desc[32];
 189
 190         /* Adaptive interrupt coalescing (AIC) info */
 191         bool enable_aic;
 192         u32 min_eqd;            /* in usecs */
 193         u32 max_eqd;            /* in usecs */
 194         u32 eqd;                /* configured val when aic is off */
 195         u32 cur_eqd;            /* in usecs */
 196
 197         u8 idx;                 /* array index */
 198         u8 msix_idx;
 199         u16 tx_budget;
 200         u16 spurious_intr;
 201         struct napi_struct napi;
 202         struct be_adapter *adapter;
 203
 204 #ifdef CONFIG_NET_RX_BUSY_POLL
 205 #define BE_EQ_IDLE              0
 206 #define BE_EQ_NAPI              1       /* napi owns this EQ */
 207 #define BE_EQ_POLL              2       /* poll owns this EQ */
 208 #define BE_EQ_LOCKED            (BE_EQ_NAPI | BE_EQ_POLL)
 209 #define BE_EQ_NAPI_YIELD        4       /* napi yielded this EQ */
 210 #define BE_EQ_POLL_YIELD        8       /* poll yielded this EQ */
 211 #define BE_EQ_YIELD             (BE_EQ_NAPI_YIELD | BE_EQ_POLL_YIELD)
 212 #define BE_EQ_USER_PEND         (BE_EQ_POLL | BE_EQ_POLL_YIELD)
 213         unsigned int state;
 214         spinlock_t lock;        /* lock to serialize napi and busy-poll */
 215 #endif  /* CONFIG_NET_RX_BUSY_POLL */
 216 } ____cacheline_aligned_in_smp;
 217
 218 struct be_aic_obj {             /* Adaptive interrupt coalescing (AIC) info */
 219         bool enable;
 220         u32 min_eqd;            /* in usecs */
 221         u32 max_eqd;            /* in usecs */
 222         u32 prev_eqd;           /* in usecs */
 223         u32 et_eqd;             /* configured val when aic is off */
 224         ulong jiffies;
 225         u64 rx_pkts_prev;       /* Used to calculate RX pps */
 226         u64 tx_reqs_prev;       /* Used to calculate TX pps */
 227 };
 228
 229 enum {
 230         NAPI_POLLING,
 231         BUSY_POLLING
 232 };
 233
 234 struct be_mcc_obj {
 235         struct be_queue_info q;
 236         struct be_queue_info cq;
 237         bool rearm_cq;
 238 };
 239
 240 struct be_tx_stats {
 241         u64 tx_bytes;
 242         u64 tx_pkts;
 243         u64 tx_reqs;
 244         u64 tx_wrbs;
 245         u64 tx_compl;
 246         ulong tx_jiffies;
 247         u32 tx_stops;
 248         u32 tx_drv_drops;       /* pkts dropped by driver */
 249         struct u64_stats_sync sync;
 250         struct u64_stats_sync sync_compl;
 251 };
 252
 253 struct be_tx_obj {
 254         u32 db_offset;
 255         struct be_queue_info q;
 256         struct be_queue_info cq;
 257         /* Remember the skbs that were transmitted */
 258         struct sk_buff *sent_skb_list[TX_Q_LEN];
 259         struct be_tx_stats stats;
 260 } ____cacheline_aligned_in_smp;
 261
 262 /* Struct to remember the pages posted for rx frags */
 263 struct be_rx_page_info {
 264         struct page *page;
 265         DEFINE_DMA_UNMAP_ADDR(bus);
 266         u16 page_offset;
 267         bool last_page_user;
 268 };
 269
 270 struct be_rx_stats {
 271         u64 rx_bytes;
 272         u64 rx_pkts;
 273         u32 rx_drops_no_skbs;   /* skb allocation errors */
 274         u32 rx_drops_no_frags;  /* HW has no fetched frags */
 275         u32 rx_post_fail;       /* page post alloc failures */
 276         u32 rx_compl;
 277         u32 rx_mcast_pkts;
 278         u32 rx_compl_err;       /* completions with err set */
 279         struct u64_stats_sync sync;
 280 };
 281
 282 struct be_rx_compl_info {
 283         u32 rss_hash;
 284         u16 vlan_tag;
 285         u16 pkt_size;
 286         u16 port;
 287         u8 vlanf;
 288         u8 num_rcvd;
 289         u8 err;
 290         u8 ipf;
 291         u8 tcpf;
 292         u8 udpf;
 293         u8 ip_csum;
 294         u8 l4_csum;
 295         u8 ipv6;
 296         u8 vtm;
 297         u8 pkt_type;
 298         u8 ip_frag;
 299 };
 300
 301 struct be_rx_obj {
 302         struct be_adapter *adapter;
 303         struct be_queue_info q;
 304         struct be_queue_info cq;
 305         struct be_rx_compl_info rxcp;
 306         struct be_rx_page_info page_info_tbl[RX_Q_LEN];
 307         struct be_rx_stats stats;
 308         u8 rss_id;
 309         bool rx_post_starved;   /* Zero rx frags have been posted to BE */
 310 } ____cacheline_aligned_in_smp;
 311
 312 struct be_drv_stats {
 313         u32 be_on_die_temperature;
 314         u32 eth_red_drops;
 315         u32 rx_drops_no_pbuf;
 316         u32 rx_drops_no_txpb;
 317         u32 rx_drops_no_erx_descr;
 318         u32 rx_drops_no_tpre_descr;
 319         u32 rx_drops_too_many_frags;
 320         u32 forwarded_packets;
 321         u32 rx_drops_mtu;
 322         u32 rx_crc_errors;
 323         u32 rx_alignment_symbol_errors;
 324         u32 rx_pause_frames;
 325         u32 rx_priority_pause_frames;
 326         u32 rx_control_frames;
 327         u32 rx_in_range_errors;
 328         u32 rx_out_range_errors;
 329         u32 rx_frame_too_long;
 330         u32 rx_address_filtered;
 331         u32 rx_dropped_too_small;
 332         u32 rx_dropped_too_short;
 333         u32 rx_dropped_header_too_small;
 334         u32 rx_dropped_tcp_length;
 335         u32 rx_dropped_runt;
 336         u32 rx_ip_checksum_errs;
 337         u32 rx_tcp_checksum_errs;
 338         u32 rx_udp_checksum_errs;
 339         u32 tx_pauseframes;
 340         u32 tx_priority_pauseframes;
 341         u32 tx_controlframes;
 342         u32 rxpp_fifo_overflow_drop;
 343         u32 rx_input_fifo_overflow_drop;
 344         u32 pmem_fifo_overflow_drop;
 345         u32 jabber_events;
 346         u32 rx_roce_bytes_lsd;
 347         u32 rx_roce_bytes_msd;
 348         u32 rx_roce_frames;
 349         u32 roce_drops_payload_len;
 350         u32 roce_drops_crc;
 351 };
 352
 353 struct be_vf_cfg {
 354         unsigned char mac_addr[ETH_ALEN];
 355         int if_handle;
 356         int pmac_id;
 357         u16 def_vid;
 358         u16 vlan_tag;
 359         u32 tx_rate;
 360 };
 361
 362 enum vf_state {
 363         ENABLED = 0,
 364         ASSIGNED = 1
 365 };
 366
 367 #define BE_FLAGS_LINK_STATUS_INIT               1
 368 #define BE_FLAGS_WORKER_SCHEDULED               (1 << 3)
 369 #define BE_FLAGS_VLAN_PROMISC                   (1 << 4)
 370 #define BE_FLAGS_NAPI_ENABLED                   (1 << 9)
 371 #define BE_UC_PMAC_COUNT                30
 372 #define BE_VF_UC_PMAC_COUNT             2
 373 #define BE_FLAGS_QNQ_ASYNC_EVT_RCVD             (1 << 11)
 374
 375 /* Ethtool set_dump flags */
 376 #define LANCER_INITIATE_FW_DUMP                 0x1
 377
 378 struct phy_info {
 379         u8 transceiver;
 380         u8 autoneg;
 381         u8 fc_autoneg;
 382         u8 port_type;
 383         u16 phy_type;
 384         u16 interface_type;
 385         u32 misc_params;
 386         u16 auto_speeds_supported;
 387         u16 fixed_speeds_supported;
 388         int link_speed;
 389         u32 dac_cable_len;
 390         u32 advertising;
 391         u32 supported;
 392 };
 393
 394 struct be_resources {
 395         u16 max_vfs;            /* Total VFs "really" supported by FW/HW */
 396         u16 max_mcast_mac;
 397         u16 max_tx_qs;
 398         u16 max_rss_qs;
 399         u16 max_rx_qs;
 400         u16 max_uc_mac;         /* Max UC MACs programmable */
 401         u16 max_vlans;          /* Number of vlans supported */
 402         u16 max_evt_qs;
 403         u32 if_cap_flags;
 404 };
 405
 406 struct be_adapter {
 407         struct pci_dev *pdev;
 408         struct net_device *netdev;
 409
 410         u8 __iomem *csr;        /* CSR BAR used only for BE2/3 */
 411         u8 __iomem *db;         /* Door Bell */
 412
 413         struct mutex mbox_lock; /* For serializing mbox cmds to BE card */
 414         struct be_dma_mem mbox_mem;
 415         /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
 416          * is stored for freeing purpose */
 417         struct be_dma_mem mbox_mem_alloced;
 418
 419         struct be_mcc_obj mcc_obj;
 420         spinlock_t mcc_lock;    /* For serializing mcc cmds to BE card */
 421         spinlock_t mcc_cq_lock;
 422
 423         u16 cfg_num_qs;         /* configured via set-channels */
 424         u16 num_evt_qs;
 425         u16 num_msix_vec;
 426         struct be_eq_obj eq_obj[MAX_EVT_QS];
 427         struct msix_entry msix_entries[MAX_MSIX_VECTORS];
 428         bool isr_registered;
 429
 430         /* TX Rings */
 431         u16 num_tx_qs;
 432         struct be_tx_obj tx_obj[MAX_TX_QS];
 433
 434         /* Rx rings */
 435         u16 num_rx_qs;
 436         struct be_rx_obj rx_obj[MAX_RX_QS];
 437         u32 big_page_size;      /* Compounded page size shared by rx wrbs */
 438
 439         struct be_drv_stats drv_stats;
 440         struct be_aic_obj aic_obj[MAX_EVT_QS];
 441         u16 vlans_added;
 442         u8 vlan_tag[VLAN_N_VID];
 443         u8 vlan_prio_bmap;      /* Available Priority BitMap */
 444         u16 recommended_prio;   /* Recommended Priority */
 445         struct be_dma_mem rx_filter; /* Cmd DMA mem for rx-filter */
 446
 447         struct be_dma_mem stats_cmd;
 448         /* Work queue used to perform periodic tasks like getting statistics */
 449         struct delayed_work work;
 450         u16 work_counter;
 451
 452         struct delayed_work func_recovery_work;
 453         u32 flags;
 454         u32 cmd_privileges;
 455         /* Ethtool knobs and info */
 456         char fw_ver[FW_VER_LEN];
 457         char fw_on_flash[FW_VER_LEN];
 458         int if_handle;          /* Used to configure filtering */
 459         u32 *pmac_id;           /* MAC addr handle used by BE card */
 460         u32 beacon_state;       /* for set_phys_id */
 461
 462         bool eeh_error;
 463         bool fw_timeout;
 464         bool hw_error;
 465
 466         u32 port_num;
 467         bool promiscuous;
 468         u32 function_mode;
 469         u32 function_caps;
 470         u32 rx_fc;              /* Rx flow control */
 471         u32 tx_fc;              /* Tx flow control */
 472         bool stats_cmd_sent;
 473         struct {
 474                 u32 size;
 475                 u32 total_size;
 476                 u64 io_addr;
 477         } roce_db;
 478         u32 num_msix_roce_vec;
 479         struct ocrdma_dev *ocrdma_dev;
 480         struct list_head entry;
 481
 482         u32 flash_status;
 483         struct completion et_cmd_compl;
 484
 485         struct be_resources res;        /* resources available for the func */
 486         u16 num_vfs;                    /* Number of VFs provisioned by PF */
 487         u8 virtfn;
 488         struct be_vf_cfg *vf_cfg;
 489         bool be3_native;
 490         u32 sli_family;
 491         u8 hba_port_num;
 492         u16 pvid;
 493         struct phy_info phy;
 494         u8 wol_cap;
 495         bool wol_en;
 496         u32 uc_macs;            /* Count of secondary UC MAC programmed */
 497         u16 asic_rev;
 498         u16 qnq_vid;
 499         u32 msg_enable;
 500         int be_get_temp_freq;
 501         u8 pf_number;
 502         u64 rss_flags;
 503 };
 504
 505 #define be_physfn(adapter)              (!adapter->virtfn)
 506 #define be_virtfn(adapter)              (adapter->virtfn)
 507 #define sriov_enabled(adapter)          (adapter->num_vfs > 0)
 508 #define sriov_want(adapter)             (be_physfn(adapter) &&  \
 509                                          (num_vfs || pci_num_vf(adapter->pdev)))
 510 #define for_all_vfs(adapter, vf_cfg, i)                                 \
 511         for (i = 0, vf_cfg = &adapter->vf_cfg[i]; i < adapter->num_vfs; \
 512                 i++, vf_cfg++)
 513
 514 #define ON                              1
 515 #define OFF                             0
 516
 517 #define be_max_vlans(adapter)           (adapter->res.max_vlans)
 518 #define be_max_uc(adapter)              (adapter->res.max_uc_mac)
 519 #define be_max_mc(adapter)              (adapter->res.max_mcast_mac)
 520 #define be_max_vfs(adapter)             (adapter->res.max_vfs)
 521 #define be_max_rss(adapter)             (adapter->res.max_rss_qs)
 522 #define be_max_txqs(adapter)            (adapter->res.max_tx_qs)
 523 #define be_max_prio_txqs(adapter)       (adapter->res.max_prio_tx_qs)
 524 #define be_max_rxqs(adapter)            (adapter->res.max_rx_qs)
 525 #define be_max_eqs(adapter)             (adapter->res.max_evt_qs)
 526 #define be_if_cap_flags(adapter)        (adapter->res.if_cap_flags)
 527
 528 static inline u16 be_max_qs(struct be_adapter *adapter)
 529 {
 530         /* If no RSS, need atleast the one def RXQ */
 531         u16 num = max_t(u16, be_max_rss(adapter), 1);
 532
 533         num = min(num, be_max_eqs(adapter));
 534         return min_t(u16, num, num_online_cpus());
 535 }
 536
 537 #define lancer_chip(adapter)    (adapter->pdev->device == OC_DEVICE_ID3 || \
 538                                  adapter->pdev->device == OC_DEVICE_ID4)
 539
 540 #define skyhawk_chip(adapter)   (adapter->pdev->device == OC_DEVICE_ID5 || \
 541                                  adapter->pdev->device == OC_DEVICE_ID6)
 542
 543 #define BE3_chip(adapter)       (adapter->pdev->device == BE_DEVICE_ID2 || \
 544                                  adapter->pdev->device == OC_DEVICE_ID2)
 545
 546 #define BE2_chip(adapter)       (adapter->pdev->device == BE_DEVICE_ID1 || \
 547                                  adapter->pdev->device == OC_DEVICE_ID1)
 548
 549 #define BEx_chip(adapter)       (BE3_chip(adapter) || BE2_chip(adapter))
 550
 551 #define be_roce_supported(adapter)      (skyhawk_chip(adapter) && \
 552                                         (adapter->function_mode & RDMA_ENABLED))
 553
 554 extern const struct ethtool_ops be_ethtool_ops;
 555
 556 #define msix_enabled(adapter)           (adapter->num_msix_vec > 0)
 557 #define num_irqs(adapter)               (msix_enabled(adapter) ?        \
 558                                                 adapter->num_msix_vec : 1)
 559 #define tx_stats(txo)                   (&(txo)->stats)
 560 #define rx_stats(rxo)                   (&(rxo)->stats)
 561
 562 /* The default RXQ is the last RXQ */
 563 #define default_rxo(adpt)               (&adpt->rx_obj[adpt->num_rx_qs - 1])
 564
 565 #define for_all_rx_queues(adapter, rxo, i)                              \
 566         for (i = 0, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs;  \
 567                 i++, rxo++)
 568
 569 /* Skip the default non-rss queue (last one)*/
 570 #define for_all_rss_queues(adapter, rxo, i)                             \
 571         for (i = 0, rxo = &adapter->rx_obj[i]; i < (adapter->num_rx_qs - 1);\
 572                 i++, rxo++)
 573
 574 #define for_all_tx_queues(adapter, txo, i)                              \
 575         for (i = 0, txo = &adapter->tx_obj[i]; i < adapter->num_tx_qs;  \
 576                 i++, txo++)
 577
 578 #define for_all_evt_queues(adapter, eqo, i)                             \
 579         for (i = 0, eqo = &adapter->eq_obj[i]; i < adapter->num_evt_qs; \
 580                 i++, eqo++)
 581
 582 #define for_all_rx_queues_on_eq(adapter, eqo, rxo, i)                   \
 583         for (i = eqo->idx, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs;\
 584                  i += adapter->num_evt_qs, rxo += adapter->num_evt_qs)
 585
 586 #define is_mcc_eqo(eqo)                 (eqo->idx == 0)
 587 #define mcc_eqo(adapter)                (&adapter->eq_obj[0])
 588
 589 #define PAGE_SHIFT_4K           12
 590 #define PAGE_SIZE_4K            (1 << PAGE_SHIFT_4K)
 591
 592 /* Returns number of pages spanned by the data starting at the given addr */
 593 #define PAGES_4K_SPANNED(_address, size)                                \
 594                 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) +     \
 595                         (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
 596
 597 /* Returns bit offset within a DWORD of a bitfield */
 598 #define AMAP_BIT_OFFSET(_struct, field)                                 \
 599                 (((size_t)&(((_struct *)0)->field))%32)
 600
 601 /* Returns the bit mask of the field that is NOT shifted into location. */
 602 static inline u32 amap_mask(u32 bitsize)
 603 {
 604         return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
 605 }
 606
 607 static inline void
 608 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
 609 {
 610         u32 *dw = (u32 *) ptr + dw_offset;
 611         *dw &= ~(mask << offset);
 612         *dw |= (mask & value) << offset;
 613 }
 614
 615 #define AMAP_SET_BITS(_struct, field, ptr, val)                         \
 616                 amap_set(ptr,                                           \
 617                         offsetof(_struct, field)/32,                    \
 618                         amap_mask(sizeof(((_struct *)0)->field)),       \
 619                         AMAP_BIT_OFFSET(_struct, field),                \
 620                         val)
 621
 622 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
 623 {
 624         u32 *dw = (u32 *) ptr;
 625         return mask & (*(dw + dw_offset) >> offset);
 626 }
 627
 628 #define AMAP_GET_BITS(_struct, field, ptr)                              \
 629                 amap_get(ptr,                                           \
 630                         offsetof(_struct, field)/32,                    \
 631                         amap_mask(sizeof(((_struct *)0)->field)),       \
 632                         AMAP_BIT_OFFSET(_struct, field))
 633
 634 #define be_dws_cpu_to_le(wrb, len)      swap_dws(wrb, len)
 635 #define be_dws_le_to_cpu(wrb, len)      swap_dws(wrb, len)
 636 static inline void swap_dws(void *wrb, int len)
 637 {
 638 #ifdef __BIG_ENDIAN
 639         u32 *dw = wrb;
 640         BUG_ON(len % 4);
 641         do {
 642                 *dw = cpu_to_le32(*dw);
 643                 dw++;
 644                 len -= 4;
 645         } while (len);
 646 #endif                          /* __BIG_ENDIAN */
 647 }
 648
 649 static inline u8 is_tcp_pkt(struct sk_buff *skb)
 650 {
 651         u8 val = 0;
 652
 653         if (ip_hdr(skb)->version == 4)
 654                 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
 655         else if (ip_hdr(skb)->version == 6)
 656                 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
 657
 658         return val;
 659 }
 660
 661 static inline u8 is_udp_pkt(struct sk_buff *skb)
 662 {
 663         u8 val = 0;
 664
 665         if (ip_hdr(skb)->version == 4)
 666                 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
 667         else if (ip_hdr(skb)->version == 6)
 668                 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
 669
 670         return val;
 671 }
 672
 673 static inline bool is_ipv4_pkt(struct sk_buff *skb)
 674 {
 675         return skb->protocol == htons(ETH_P_IP) && ip_hdr(skb)->version == 4;
 676 }
 677
 678 static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
 679 {
 680         u32 addr;
 681
 682         addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
 683
 684         mac[5] = (u8)(addr & 0xFF);
 685         mac[4] = (u8)((addr >> 8) & 0xFF);
 686         mac[3] = (u8)((addr >> 16) & 0xFF);
 687         /* Use the OUI from the current MAC address */
 688         memcpy(mac, adapter->netdev->dev_addr, 3);
 689 }
 690
 691 static inline bool be_multi_rxq(const struct be_adapter *adapter)
 692 {
 693         return adapter->num_rx_qs > 1;
 694 }
 695
 696 static inline bool be_error(struct be_adapter *adapter)
 697 {
 698         return adapter->eeh_error || adapter->hw_error || adapter->fw_timeout;
 699 }
 700
 701 static inline bool be_hw_error(struct be_adapter *adapter)
 702 {
 703         return adapter->eeh_error || adapter->hw_error;
 704 }
 705
 706 static inline void  be_clear_all_error(struct be_adapter *adapter)
 707 {
 708         adapter->eeh_error = false;
 709         adapter->hw_error = false;
 710         adapter->fw_timeout = false;
 711 }
 712
 713 static inline bool be_is_wol_excluded(struct be_adapter *adapter)
 714 {
 715         struct pci_dev *pdev = adapter->pdev;
 716
 717         if (!be_physfn(adapter))
 718                 return true;
 719
 720         switch (pdev->subsystem_device) {
 721         case OC_SUBSYS_DEVICE_ID1:
 722         case OC_SUBSYS_DEVICE_ID2:
 723         case OC_SUBSYS_DEVICE_ID3:
 724         case OC_SUBSYS_DEVICE_ID4:
 725                 return true;
 726         default:
 727                 return false;
 728         }
 729 }
 730
 731 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
 732 {
 733         return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
 734 }
 735
 736 #ifdef CONFIG_NET_RX_BUSY_POLL
 737 static inline bool be_lock_napi(struct be_eq_obj *eqo)
 738 {
 739         bool status = true;
 740
 741         spin_lock(&eqo->lock); /* BH is already disabled */
 742         if (eqo->state & BE_EQ_LOCKED) {
 743                 WARN_ON(eqo->state & BE_EQ_NAPI);
 744                 eqo->state |= BE_EQ_NAPI_YIELD;
 745                 status = false;
 746         } else {
 747                 eqo->state = BE_EQ_NAPI;
 748         }
 749         spin_unlock(&eqo->lock);
 750         return status;
 751 }
 752
 753 static inline void be_unlock_napi(struct be_eq_obj *eqo)
 754 {
 755         spin_lock(&eqo->lock); /* BH is already disabled */
 756
 757         WARN_ON(eqo->state & (BE_EQ_POLL | BE_EQ_NAPI_YIELD));
 758         eqo->state = BE_EQ_IDLE;
 759
 760         spin_unlock(&eqo->lock);
 761 }
 762
 763 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
 764 {
 765         bool status = true;
 766
 767         spin_lock_bh(&eqo->lock);
 768         if (eqo->state & BE_EQ_LOCKED) {
 769                 eqo->state |= BE_EQ_POLL_YIELD;
 770                 status = false;
 771         } else {
 772                 eqo->state |= BE_EQ_POLL;
 773         }
 774         spin_unlock_bh(&eqo->lock);
 775         return status;
 776 }
 777
 778 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
 779 {
 780         spin_lock_bh(&eqo->lock);
 781
 782         WARN_ON(eqo->state & (BE_EQ_NAPI));
 783         eqo->state = BE_EQ_IDLE;
 784
 785         spin_unlock_bh(&eqo->lock);
 786 }
 787
 788 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
 789 {
 790         spin_lock_init(&eqo->lock);
 791         eqo->state = BE_EQ_IDLE;
 792 }
 793
 794 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
 795 {
 796         local_bh_disable();
 797
 798         /* It's enough to just acquire napi lock on the eqo to stop
 799          * be_busy_poll() from processing any queueus.
 800          */
 801         while (!be_lock_napi(eqo))
 802                 mdelay(1);
 803
 804         local_bh_enable();
 805 }
 806
 807 #else /* CONFIG_NET_RX_BUSY_POLL */
 808
 809 static inline bool be_lock_napi(struct be_eq_obj *eqo)
 810 {
 811         return true;
 812 }
 813
 814 static inline void be_unlock_napi(struct be_eq_obj *eqo)
 815 {
 816 }
 817
 818 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
 819 {
 820         return false;
 821 }
 822
 823 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
 824 {
 825 }
 826
 827 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
 828 {
 829 }
 830
 831 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
 832 {
 833 }
 834 #endif /* CONFIG_NET_RX_BUSY_POLL */
 835
 836 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
 837                   u16 num_popped);
 838 void be_link_status_update(struct be_adapter *adapter, u8 link_status);
 839 void be_parse_stats(struct be_adapter *adapter);
 840 int be_load_fw(struct be_adapter *adapter, u8 *func);
 841 bool be_is_wol_supported(struct be_adapter *adapter);
 842 bool be_pause_supported(struct be_adapter *adapter);
 843 u32 be_get_fw_log_level(struct be_adapter *adapter);
 844
 845 static inline int fw_major_num(const char *fw_ver)
 846 {
 847         int fw_major = 0;
 848
 849         sscanf(fw_ver, "%d.", &fw_major);
 850
 851         return fw_major;
 852 }
 853
 854 int be_update_queues(struct be_adapter *adapter);
 855 int be_poll(struct napi_struct *napi, int budget);
 856
 857 /*
 858  * internal function to initialize-cleanup roce device.
 859  */
 860 void be_roce_dev_add(struct be_adapter *);
 861 void be_roce_dev_remove(struct be_adapter *);
 862
 863 /*
 864  * internal function to open-close roce device during ifup-ifdown.
 865  */
 866 void be_roce_dev_open(struct be_adapter *);
 867 void be_roce_dev_close(struct be_adapter *);
 868
 869 #endif                          /* BE_H */