LXR linux/drivers/scsi/lpfc/lpfc.h

   1/*******************************************************************
   2 * This file is part of the Emulex Linux Device Driver for         *
   3 * Fibre Channel Host Bus Adapters.                                *
   4 * Copyright (C) 2004-2015 Emulex.  All rights reserved.           *
   5 * EMULEX and SLI are trademarks of Emulex.                        *
   6 * www.emulex.com                                                  *
   7 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8 *                                                                 *
   9 * This program is free software; you can redistribute it and/or   *
  10 * modify it under the terms of version 2 of the GNU General       *
  11 * Public License as published by the Free Software Foundation.    *
  12 * This program is distributed in the hope that it will be useful. *
  13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18 * more details, a copy of which can be found in the file COPYING  *
  19 * included with this package.                                     *
  20 *******************************************************************/
  21
  22#include <scsi/scsi_host.h>
  23
  24#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS)
  25#define CONFIG_SCSI_LPFC_DEBUG_FS
  26#endif
  27
  28struct lpfc_sli2_slim;
  29
  30#define ELX_MODEL_NAME_SIZE     80
  31
  32#define LPFC_PCI_DEV_LP         0x1
  33#define LPFC_PCI_DEV_OC         0x2
  34
  35#define LPFC_SLI_REV2           2
  36#define LPFC_SLI_REV3           3
  37#define LPFC_SLI_REV4           4
  38
  39#define LPFC_MAX_TARGET         4096    /* max number of targets supported */
  40#define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els
  41                                           requests */
  42#define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
  43                                           the NameServer  before giving up. */
  44#define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
  45#define LPFC_DEFAULT_SG_SEG_CNT 64      /* sg element count per scsi cmnd */
  46#define LPFC_DEFAULT_MENLO_SG_SEG_CNT 128       /* sg element count per scsi
  47                cmnd for menlo needs nearly twice as for firmware
  48                downloads using bsg */
  49
  50#define LPFC_MIN_SG_SLI4_BUF_SZ 0x800   /* based on LPFC_DEFAULT_SG_SEG_CNT */
  51#define LPFC_MAX_SG_SLI4_SEG_CNT_DIF 128 /* sg element count per scsi cmnd */
  52#define LPFC_MAX_SG_SEG_CNT_DIF 512     /* sg element count per scsi cmnd  */
  53#define LPFC_MAX_SG_SEG_CNT     4096    /* sg element count per scsi cmnd */
  54#define LPFC_MAX_SGL_SEG_CNT    512     /* SGL element count per scsi cmnd */
  55#define LPFC_MAX_BPL_SEG_CNT    4096    /* BPL element count per scsi cmnd */
  56
  57#define LPFC_MAX_SGE_SIZE       0x80000000 /* Maximum data allowed in a SGE */
  58#define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  59#define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  60#define LPFC_VNAME_LEN          100     /* vport symbolic name length */
  61#define LPFC_TGTQ_INTERVAL      40000   /* Min amount of time between tgt
  62                                           queue depth change in millisecs */
  63#define LPFC_TGTQ_RAMPUP_PCENT  5       /* Target queue rampup in percentage */
  64#define LPFC_MIN_TGT_QDEPTH     10
  65#define LPFC_MAX_TGT_QDEPTH     0xFFFF
  66
  67#define  LPFC_MAX_BUCKET_COUNT 20       /* Maximum no. of buckets for stat data
  68                                           collection. */
  69/*
  70 * Following time intervals are used of adjusting SCSI device
  71 * queue depths when there are driver resource error or Firmware
  72 * resource error.
  73 */
  74/* 1 Second */
  75#define QUEUE_RAMP_DOWN_INTERVAL        (msecs_to_jiffies(1000 * 1))
  76
  77/* Number of exchanges reserved for discovery to complete */
  78#define LPFC_DISC_IOCB_BUFF_COUNT 20
  79
  80#define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  81#define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  82
  83#define LPFC_LOOK_AHEAD_OFF     0       /* Look ahead logic is turned off */
  84
  85/* Error Attention event polling interval */
  86#define LPFC_ERATT_POLL_INTERVAL        5 /* EATT poll interval in seconds */
  87
  88/* Define macros for 64 bit support */
  89#define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  90#define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  91#define getPaddr(high, low)  ((dma_addr_t)( \
  92                             (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  93/* Provide maximum configuration definitions. */
  94#define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  95#define FC_MAX_ADPTMSG          64
  96
  97#define MAX_HBAEVT      32
  98
  99/* Number of MSI-X vectors the driver uses */
 100#define LPFC_MSIX_VECTORS       2
 101
 102/* lpfc wait event data ready flag */
 103#define LPFC_DATA_READY         (1<<0)
 104
 105/* queue dump line buffer size */
 106#define LPFC_LBUF_SZ            128
 107
 108/* mailbox system shutdown options */
 109#define LPFC_MBX_NO_WAIT        0
 110#define LPFC_MBX_WAIT           1
 111
 112enum lpfc_polling_flags {
 113        ENABLE_FCP_RING_POLLING = 0x1,
 114        DISABLE_FCP_RING_INT    = 0x2
 115};
 116
 117/* Provide DMA memory definitions the driver uses per port instance. */
 118struct lpfc_dmabuf {
 119        struct list_head list;
 120        void *virt;             /* virtual address ptr */
 121        dma_addr_t phys;        /* mapped address */
 122        uint32_t   buffer_tag;  /* used for tagged queue ring */
 123};
 124
 125struct lpfc_dma_pool {
 126        struct lpfc_dmabuf   *elements;
 127        uint32_t    max_count;
 128        uint32_t    current_count;
 129};
 130
 131struct hbq_dmabuf {
 132        struct lpfc_dmabuf hbuf;
 133        struct lpfc_dmabuf dbuf;
 134        uint32_t size;
 135        uint32_t tag;
 136        struct lpfc_cq_event cq_event;
 137        unsigned long time_stamp;
 138};
 139
 140/* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
 141#define MEM_PRI         0x100
 142
 143
 144/****************************************************************************/
 145/*      Device VPD save area                                                */
 146/****************************************************************************/
 147typedef struct lpfc_vpd {
 148        uint32_t status;        /* vpd status value */
 149        uint32_t length;        /* number of bytes actually returned */
 150        struct {
 151                uint32_t rsvd1; /* Revision numbers */
 152                uint32_t biuRev;
 153                uint32_t smRev;
 154                uint32_t smFwRev;
 155                uint32_t endecRev;
 156                uint16_t rBit;
 157                uint8_t fcphHigh;
 158                uint8_t fcphLow;
 159                uint8_t feaLevelHigh;
 160                uint8_t feaLevelLow;
 161                uint32_t postKernRev;
 162                uint32_t opFwRev;
 163                uint8_t opFwName[16];
 164                uint32_t sli1FwRev;
 165                uint8_t sli1FwName[16];
 166                uint32_t sli2FwRev;
 167                uint8_t sli2FwName[16];
 168        } rev;
 169        struct {
 170#ifdef __BIG_ENDIAN_BITFIELD
 171                uint32_t rsvd3  :19;  /* Reserved                             */
 172                uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 173                uint32_t rsvd2  : 3;  /* Reserved                             */
 174                uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 175                uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 176                uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 177                uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 178                uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 179                uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 180                uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 181                uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 182                uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 183#else   /*  __LITTLE_ENDIAN */
 184                uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 185                uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 186                uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 187                uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 188                uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 189                uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 190                uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 191                uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 192                uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 193                uint32_t rsvd2  : 3;  /* Reserved                             */
 194                uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 195                uint32_t rsvd3  :19;  /* Reserved                             */
 196#endif
 197        } sli3Feat;
 198} lpfc_vpd_t;
 199
 200struct lpfc_scsi_buf;
 201
 202
 203/*
 204 * lpfc stat counters
 205 */
 206struct lpfc_stats {
 207        /* Statistics for ELS commands */
 208        uint32_t elsLogiCol;
 209        uint32_t elsRetryExceeded;
 210        uint32_t elsXmitRetry;
 211        uint32_t elsDelayRetry;
 212        uint32_t elsRcvDrop;
 213        uint32_t elsRcvFrame;
 214        uint32_t elsRcvRSCN;
 215        uint32_t elsRcvRNID;
 216        uint32_t elsRcvFARP;
 217        uint32_t elsRcvFARPR;
 218        uint32_t elsRcvFLOGI;
 219        uint32_t elsRcvPLOGI;
 220        uint32_t elsRcvADISC;
 221        uint32_t elsRcvPDISC;
 222        uint32_t elsRcvFAN;
 223        uint32_t elsRcvLOGO;
 224        uint32_t elsRcvPRLO;
 225        uint32_t elsRcvPRLI;
 226        uint32_t elsRcvLIRR;
 227        uint32_t elsRcvRLS;
 228        uint32_t elsRcvRPS;
 229        uint32_t elsRcvRPL;
 230        uint32_t elsRcvRRQ;
 231        uint32_t elsRcvRTV;
 232        uint32_t elsRcvECHO;
 233        uint32_t elsRcvLCB;
 234        uint32_t elsRcvRDP;
 235        uint32_t elsXmitFLOGI;
 236        uint32_t elsXmitFDISC;
 237        uint32_t elsXmitPLOGI;
 238        uint32_t elsXmitPRLI;
 239        uint32_t elsXmitADISC;
 240        uint32_t elsXmitLOGO;
 241        uint32_t elsXmitSCR;
 242        uint32_t elsXmitRNID;
 243        uint32_t elsXmitFARP;
 244        uint32_t elsXmitFARPR;
 245        uint32_t elsXmitACC;
 246        uint32_t elsXmitLSRJT;
 247
 248        uint32_t frameRcvBcast;
 249        uint32_t frameRcvMulti;
 250        uint32_t strayXmitCmpl;
 251        uint32_t frameXmitDelay;
 252        uint32_t xriCmdCmpl;
 253        uint32_t xriStatErr;
 254        uint32_t LinkUp;
 255        uint32_t LinkDown;
 256        uint32_t LinkMultiEvent;
 257        uint32_t NoRcvBuf;
 258        uint32_t fcpCmd;
 259        uint32_t fcpCmpl;
 260        uint32_t fcpRspErr;
 261        uint32_t fcpRemoteStop;
 262        uint32_t fcpPortRjt;
 263        uint32_t fcpPortBusy;
 264        uint32_t fcpError;
 265        uint32_t fcpLocalErr;
 266};
 267
 268struct lpfc_hba;
 269
 270
 271enum discovery_state {
 272        LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 273        LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 274        LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 275        LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 276        LPFC_FDISC             =  8,    /* FDISC sent for vport */
 277        LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 278                                         * configured */
 279        LPFC_NS_REG            =  10,   /* Register with NameServer */
 280        LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 281        LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 282                                         * device authentication / discovery */
 283        LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 284        LPFC_VPORT_READY       =  32,
 285};
 286
 287enum hba_state {
 288        LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 289        LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 290        LPFC_INIT_START      =   2,   /* Initial state after board reset */
 291        LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 292        LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 293        LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 294        LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 295                                       * CLEAR_LA */
 296        LPFC_HBA_READY       =  32,
 297        LPFC_HBA_ERROR       =  -1
 298};
 299
 300struct lpfc_vport {
 301        struct lpfc_hba *phba;
 302        struct list_head listentry;
 303        uint8_t port_type;
 304#define LPFC_PHYSICAL_PORT 1
 305#define LPFC_NPIV_PORT  2
 306#define LPFC_FABRIC_PORT 3
 307        enum discovery_state port_state;
 308
 309        uint16_t vpi;
 310        uint16_t vfi;
 311        uint8_t vpi_state;
 312#define LPFC_VPI_REGISTERED     0x1
 313
 314        uint32_t fc_flag;       /* FC flags */
 315/* Several of these flags are HBA centric and should be moved to
 316 * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 317 */
 318#define FC_PT2PT                0x1      /* pt2pt with no fabric */
 319#define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 320#define FC_DISC_TMO             0x4      /* Discovery timer running */
 321#define FC_PUBLIC_LOOP          0x8      /* Public loop */
 322#define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 323#define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 324#define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 325#define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 326#define FC_FABRIC               0x100    /* We are fabric attached */
 327#define FC_VPORT_LOGO_RCVD      0x200    /* LOGO received on vport */
 328#define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 329#define FC_LOGO_RCVD_DID_CHNG   0x800    /* FDISC on phys port detect DID chng*/
 330#define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 331#define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 332#define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 333#define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 334#define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 335#define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 336#define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
 337#define FC_VPORT_CVL_RCVD       0x400000 /* VLink failed due to CVL      */
 338#define FC_VFI_REGISTERED       0x800000 /* VFI is registered */
 339#define FC_FDISC_COMPLETED      0x1000000/* FDISC completed */
 340#define FC_DISC_DELAYED         0x2000000/* Delay NPort discovery */
 341
 342        uint32_t ct_flags;
 343#define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 344#define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 345#define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 346#define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 347#define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 348
 349        struct list_head fc_nodes;
 350
 351        /* Keep counters for the number of entries in each list. */
 352        uint16_t fc_plogi_cnt;
 353        uint16_t fc_adisc_cnt;
 354        uint16_t fc_reglogin_cnt;
 355        uint16_t fc_prli_cnt;
 356        uint16_t fc_unmap_cnt;
 357        uint16_t fc_map_cnt;
 358        uint16_t fc_npr_cnt;
 359        uint16_t fc_unused_cnt;
 360        struct serv_parm fc_sparam;     /* buffer for our service parameters */
 361
 362        uint32_t fc_myDID;      /* fibre channel S_ID */
 363        uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 364        struct lpfc_name fabric_portname;
 365        struct lpfc_name fabric_nodename;
 366
 367        int32_t stopped;   /* HBA has not been restarted since last ERATT */
 368        uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 369
 370        uint32_t num_disc_nodes;        /*in addition to hba_state */
 371
 372        uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 373        uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 374        uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 375        struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 376        struct lpfc_name fc_nodename;   /* fc nodename */
 377        struct lpfc_name fc_portname;   /* fc portname */
 378
 379        struct lpfc_work_evt disc_timeout_evt;
 380
 381        struct timer_list fc_disctmo;   /* Discovery rescue timer */
 382        uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 383        uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 384
 385        spinlock_t work_port_lock;
 386        uint32_t work_port_events; /* Timeout to be handled  */
 387#define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 388#define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 389#define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 390#define WORKER_DELAYED_DISC_TMO        0x8      /* vport: delayed discovery */
 391
 392#define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 393#define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 394#define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 395#define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 396#define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 397#define WORKER_SERVICE_TXQ             0x2000   /* hba: IOCBs on the txq */
 398
 399        struct timer_list fc_fdmitmo;
 400        struct timer_list els_tmofunc;
 401        struct timer_list delayed_disc_tmo;
 402
 403        int unreg_vpi_cmpl;
 404
 405        uint8_t load_flag;
 406#define FC_LOADING              0x1     /* HBA in process of loading drvr */
 407#define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 408        /* Vport Config Parameters */
 409        uint32_t cfg_scan_down;
 410        uint32_t cfg_lun_queue_depth;
 411        uint32_t cfg_nodev_tmo;
 412        uint32_t cfg_devloss_tmo;
 413        uint32_t cfg_restrict_login;
 414        uint32_t cfg_peer_port_login;
 415        uint32_t cfg_fcp_class;
 416        uint32_t cfg_use_adisc;
 417        uint32_t cfg_fdmi_on;
 418#define LPFC_FDMI_SUPPORT       1       /* bit 0 - FDMI supported? */
 419#define LPFC_FDMI_REG_DELAY     2       /* bit 1 - 60 sec registration delay */
 420#define LPFC_FDMI_ALL_ATTRIB    4       /* bit 2 - register ALL attributes? */
 421        uint32_t cfg_discovery_threads;
 422        uint32_t cfg_log_verbose;
 423        uint32_t cfg_max_luns;
 424        uint32_t cfg_enable_da_id;
 425        uint32_t cfg_max_scsicmpl_time;
 426        uint32_t cfg_tgt_queue_depth;
 427        uint32_t cfg_first_burst_size;
 428
 429        uint32_t dev_loss_tmo_changed;
 430
 431        struct fc_vport *fc_vport;
 432
 433#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 434        struct dentry *debug_disc_trc;
 435        struct dentry *debug_nodelist;
 436        struct dentry *vport_debugfs_root;
 437        struct lpfc_debugfs_trc *disc_trc;
 438        atomic_t disc_trc_cnt;
 439#endif
 440        uint8_t stat_data_enabled;
 441        uint8_t stat_data_blocked;
 442        struct list_head rcv_buffer_list;
 443        unsigned long rcv_buffer_time_stamp;
 444        uint32_t vport_flag;
 445#define STATIC_VPORT    1
 446};
 447
 448struct hbq_s {
 449        uint16_t entry_count;     /* Current number of HBQ slots */
 450        uint16_t buffer_count;    /* Current number of buffers posted */
 451        uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 452        uint32_t hbqPutIdx;       /* HBQ slot to use */
 453        uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 454        void    *hbq_virt;        /* Virtual ptr to this hbq */
 455        struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 456                                  /* Callback for HBQ buffer allocation */
 457        struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 458                                  /* Callback for HBQ buffer free */
 459        void               (*hbq_free_buffer) (struct lpfc_hba *,
 460                                               struct hbq_dmabuf *);
 461};
 462
 463#define LPFC_MAX_HBQS  4
 464/* this matches the position in the lpfc_hbq_defs array */
 465#define LPFC_ELS_HBQ    0
 466#define LPFC_EXTRA_HBQ  1
 467
 468enum hba_temp_state {
 469        HBA_NORMAL_TEMP,
 470        HBA_OVER_TEMP
 471};
 472
 473enum intr_type_t {
 474        NONE = 0,
 475        INTx,
 476        MSI,
 477        MSIX,
 478};
 479
 480#define LPFC_CT_CTX_MAX         64
 481struct unsol_rcv_ct_ctx {
 482        uint32_t ctxt_id;
 483        uint32_t SID;
 484        uint32_t valid;
 485#define UNSOL_INVALID           0
 486#define UNSOL_VALID             1
 487        uint16_t oxid;
 488        uint16_t rxid;
 489};
 490
 491#define LPFC_USER_LINK_SPEED_AUTO       0       /* auto select (default)*/
 492#define LPFC_USER_LINK_SPEED_1G         1       /* 1 Gigabaud */
 493#define LPFC_USER_LINK_SPEED_2G         2       /* 2 Gigabaud */
 494#define LPFC_USER_LINK_SPEED_4G         4       /* 4 Gigabaud */
 495#define LPFC_USER_LINK_SPEED_8G         8       /* 8 Gigabaud */
 496#define LPFC_USER_LINK_SPEED_10G        10      /* 10 Gigabaud */
 497#define LPFC_USER_LINK_SPEED_16G        16      /* 16 Gigabaud */
 498#define LPFC_USER_LINK_SPEED_32G        32      /* 32 Gigabaud */
 499#define LPFC_USER_LINK_SPEED_MAX        LPFC_USER_LINK_SPEED_32G
 500#define LPFC_USER_LINK_SPEED_BITMAP  ((1ULL << LPFC_USER_LINK_SPEED_32G) | \
 501                                     (1 << LPFC_USER_LINK_SPEED_16G) | \
 502                                     (1 << LPFC_USER_LINK_SPEED_10G) | \
 503                                     (1 << LPFC_USER_LINK_SPEED_8G) | \
 504                                     (1 << LPFC_USER_LINK_SPEED_4G) | \
 505                                     (1 << LPFC_USER_LINK_SPEED_2G) | \
 506                                     (1 << LPFC_USER_LINK_SPEED_1G) | \
 507                                     (1 << LPFC_USER_LINK_SPEED_AUTO))
 508#define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8, 10, 16, 32"
 509
 510enum nemb_type {
 511        nemb_mse = 1,
 512        nemb_hbd
 513};
 514
 515enum mbox_type {
 516        mbox_rd = 1,
 517        mbox_wr
 518};
 519
 520enum dma_type {
 521        dma_mbox = 1,
 522        dma_ebuf
 523};
 524
 525enum sta_type {
 526        sta_pre_addr = 1,
 527        sta_pos_addr
 528};
 529
 530struct lpfc_mbox_ext_buf_ctx {
 531        uint32_t state;
 532#define LPFC_BSG_MBOX_IDLE              0
 533#define LPFC_BSG_MBOX_HOST              1
 534#define LPFC_BSG_MBOX_PORT              2
 535#define LPFC_BSG_MBOX_DONE              3
 536#define LPFC_BSG_MBOX_ABTS              4
 537        enum nemb_type nembType;
 538        enum mbox_type mboxType;
 539        uint32_t numBuf;
 540        uint32_t mbxTag;
 541        uint32_t seqNum;
 542        struct lpfc_dmabuf *mbx_dmabuf;
 543        struct list_head ext_dmabuf_list;
 544};
 545
 546struct lpfc_hba {
 547        /* SCSI interface function jump table entries */
 548        int (*lpfc_new_scsi_buf)
 549                (struct lpfc_vport *, int);
 550        struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
 551                (struct lpfc_hba *, struct lpfc_nodelist *);
 552        int (*lpfc_scsi_prep_dma_buf)
 553                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 554        void (*lpfc_scsi_unprep_dma_buf)
 555                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 556        void (*lpfc_release_scsi_buf)
 557                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 558        void (*lpfc_rampdown_queue_depth)
 559                (struct lpfc_hba *);
 560        void (*lpfc_scsi_prep_cmnd)
 561                (struct lpfc_vport *, struct lpfc_scsi_buf *,
 562                 struct lpfc_nodelist *);
 563
 564        /* IOCB interface function jump table entries */
 565        int (*__lpfc_sli_issue_iocb)
 566                (struct lpfc_hba *, uint32_t,
 567                 struct lpfc_iocbq *, uint32_t);
 568        void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
 569                         struct lpfc_iocbq *);
 570        int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
 571        IOCB_t * (*lpfc_get_iocb_from_iocbq)
 572                (struct lpfc_iocbq *);
 573        void (*lpfc_scsi_cmd_iocb_cmpl)
 574                (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
 575
 576        /* MBOX interface function jump table entries */
 577        int (*lpfc_sli_issue_mbox)
 578                (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
 579
 580        /* Slow-path IOCB process function jump table entries */
 581        void (*lpfc_sli_handle_slow_ring_event)
 582                (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 583                 uint32_t mask);
 584
 585        /* INIT device interface function jump table entries */
 586        int (*lpfc_sli_hbq_to_firmware)
 587                (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
 588        int (*lpfc_sli_brdrestart)
 589                (struct lpfc_hba *);
 590        int (*lpfc_sli_brdready)
 591                (struct lpfc_hba *, uint32_t);
 592        void (*lpfc_handle_eratt)
 593                (struct lpfc_hba *);
 594        void (*lpfc_stop_port)
 595                (struct lpfc_hba *);
 596        int (*lpfc_hba_init_link)
 597                (struct lpfc_hba *, uint32_t);
 598        int (*lpfc_hba_down_link)
 599                (struct lpfc_hba *, uint32_t);
 600        int (*lpfc_selective_reset)
 601                (struct lpfc_hba *);
 602
 603        int (*lpfc_bg_scsi_prep_dma_buf)
 604                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 605        /* Add new entries here */
 606
 607        /* SLI4 specific HBA data structure */
 608        struct lpfc_sli4_hba sli4_hba;
 609
 610        struct lpfc_sli sli;
 611        uint8_t pci_dev_grp;    /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
 612        uint32_t sli_rev;               /* SLI2, SLI3, or SLI4 */
 613        uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 614#define LPFC_SLI3_HBQ_ENABLED           0x01
 615#define LPFC_SLI3_NPIV_ENABLED          0x02
 616#define LPFC_SLI3_VPORT_TEARDOWN        0x04
 617#define LPFC_SLI3_CRP_ENABLED           0x08
 618#define LPFC_SLI3_BG_ENABLED            0x20
 619#define LPFC_SLI3_DSS_ENABLED           0x40
 620#define LPFC_SLI4_PERFH_ENABLED         0x80
 621#define LPFC_SLI4_PHWQ_ENABLED          0x100
 622        uint32_t iocb_cmd_size;
 623        uint32_t iocb_rsp_size;
 624
 625        enum hba_state link_state;
 626        uint32_t link_flag;     /* link state flags */
 627#define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 628                                        /* This flag is set while issuing */
 629                                        /* INIT_LINK mailbox command */
 630#define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 631#define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 632
 633        uint32_t hba_flag;      /* hba generic flags */
 634#define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 635#define DEFER_ERATT             0x2 /* Deferred error attention in progress */
 636#define HBA_FCOE_MODE           0x4 /* HBA function in FCoE Mode */
 637#define HBA_SP_QUEUE_EVT        0x8 /* Slow-path qevt posted to worker thread*/
 638#define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
 639#define FCP_XRI_ABORT_EVENT     0x20
 640#define ELS_XRI_ABORT_EVENT     0x40
 641#define ASYNC_EVENT             0x80
 642#define LINK_DISABLED           0x100 /* Link disabled by user */
 643#define FCF_TS_INPROG           0x200 /* FCF table scan in progress */
 644#define FCF_RR_INPROG           0x400 /* FCF roundrobin flogi in progress */
 645#define HBA_FIP_SUPPORT         0x800 /* FIP support in HBA */
 646#define HBA_AER_ENABLED         0x1000 /* AER enabled with HBA */
 647#define HBA_DEVLOSS_TMO         0x2000 /* HBA in devloss timeout */
 648#define HBA_RRQ_ACTIVE          0x4000 /* process the rrq active list */
 649#define HBA_FCP_IOQ_FLUSH       0x8000 /* FCP I/O queues being flushed */
 650#define HBA_FW_DUMP_OP          0x10000 /* Skips fn reset before FW dump */
 651        uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
 652        struct lpfc_dmabuf slim2p;
 653
 654        MAILBOX_t *mbox;
 655        uint32_t *mbox_ext;
 656        struct lpfc_mbox_ext_buf_ctx mbox_ext_buf_ctx;
 657        uint32_t ha_copy;
 658        struct _PCB *pcb;
 659        struct _IOCB *IOCBs;
 660
 661        struct lpfc_dmabuf hbqslimp;
 662
 663        uint16_t pci_cfg_value;
 664
 665        uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 666
 667        uint32_t fc_eventTag;   /* event tag for link attention */
 668        uint32_t link_events;
 669
 670        /* These fields used to be binfo */
 671        uint32_t fc_pref_DID;   /* preferred D_ID */
 672        uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 673        uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
 674        uint32_t fc_edtov;      /* E_D_TOV timer value */
 675        uint32_t fc_arbtov;     /* ARB_TOV timer value */
 676        uint32_t fc_ratov;      /* R_A_TOV timer value */
 677        uint32_t fc_rttov;      /* R_T_TOV timer value */
 678        uint32_t fc_altov;      /* AL_TOV timer value */
 679        uint32_t fc_crtov;      /* C_R_TOV timer value */
 680        uint32_t fc_citov;      /* C_I_TOV timer value */
 681
 682        struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 683        uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 684
 685        uint32_t lmt;
 686
 687        uint32_t fc_topology;   /* link topology, from LINK INIT */
 688        uint32_t fc_topology_changed;   /* link topology, from LINK INIT */
 689
 690        struct lpfc_stats fc_stat;
 691
 692        struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 693        uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 694
 695        uint8_t  wwnn[8];
 696        uint8_t  wwpn[8];
 697        uint32_t RandomData[7];
 698
 699        /* HBA Config Parameters */
 700        uint32_t cfg_ack0;
 701        uint32_t cfg_enable_npiv;
 702        uint32_t cfg_enable_rrq;
 703        uint32_t cfg_topology;
 704        uint32_t cfg_link_speed;
 705#define LPFC_FCF_FOV 1          /* Fast fcf failover */
 706#define LPFC_FCF_PRIORITY 2     /* Priority fcf failover */
 707        uint32_t cfg_fcf_failover_policy;
 708        uint32_t cfg_fcp_io_sched;
 709        uint32_t cfg_fcp2_no_tgt_reset;
 710        uint32_t cfg_cr_delay;
 711        uint32_t cfg_cr_count;
 712        uint32_t cfg_multi_ring_support;
 713        uint32_t cfg_multi_ring_rctl;
 714        uint32_t cfg_multi_ring_type;
 715        uint32_t cfg_poll;
 716        uint32_t cfg_poll_tmo;
 717        uint32_t cfg_task_mgmt_tmo;
 718        uint32_t cfg_use_msi;
 719        uint32_t cfg_fcp_imax;
 720        uint32_t cfg_fcp_cpu_map;
 721        uint32_t cfg_fcp_io_channel;
 722        uint32_t cfg_total_seg_cnt;
 723        uint32_t cfg_sg_seg_cnt;
 724        uint32_t cfg_prot_sg_seg_cnt;
 725        uint32_t cfg_sg_dma_buf_size;
 726        uint64_t cfg_soft_wwnn;
 727        uint64_t cfg_soft_wwpn;
 728        uint32_t cfg_hba_queue_depth;
 729        uint32_t cfg_enable_hba_reset;
 730        uint32_t cfg_enable_hba_heartbeat;
 731        uint32_t cfg_fof;
 732        uint32_t cfg_EnableXLane;
 733        uint8_t cfg_oas_tgt_wwpn[8];
 734        uint8_t cfg_oas_vpt_wwpn[8];
 735        uint32_t cfg_oas_lun_state;
 736#define OAS_LUN_ENABLE  1
 737#define OAS_LUN_DISABLE 0
 738        uint32_t cfg_oas_lun_status;
 739#define OAS_LUN_STATUS_EXISTS   0x01
 740        uint32_t cfg_oas_flags;
 741#define OAS_FIND_ANY_VPORT      0x01
 742#define OAS_FIND_ANY_TARGET     0x02
 743#define OAS_LUN_VALID   0x04
 744        uint32_t cfg_XLanePriority;
 745        uint32_t cfg_enable_bg;
 746        uint32_t cfg_hostmem_hgp;
 747        uint32_t cfg_log_verbose;
 748        uint32_t cfg_aer_support;
 749        uint32_t cfg_sriov_nr_virtfn;
 750        uint32_t cfg_request_firmware_upgrade;
 751        uint32_t cfg_iocb_cnt;
 752        uint32_t cfg_suppress_link_up;
 753        uint32_t cfg_rrq_xri_bitmap_sz;
 754#define LPFC_INITIALIZE_LINK              0     /* do normal init_link mbox */
 755#define LPFC_DELAY_INIT_LINK              1     /* layered driver hold off */
 756#define LPFC_DELAY_INIT_LINK_INDEFINITELY 2     /* wait, manual intervention */
 757        uint32_t cfg_enable_dss;
 758        lpfc_vpd_t vpd;         /* vital product data */
 759
 760        struct pci_dev *pcidev;
 761        struct list_head      work_list;
 762        uint32_t              work_ha;      /* Host Attention Bits for WT */
 763        uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 764        uint32_t              work_hs;      /* HS stored in case of ERRAT */
 765        uint32_t              work_status[2]; /* Extra status from SLIM */
 766
 767        wait_queue_head_t    work_waitq;
 768        struct task_struct   *worker_thread;
 769        unsigned long data_flags;
 770
 771        uint32_t hbq_in_use;            /* HBQs in use flag */
 772        struct list_head rb_pend_list;  /* Received buffers to be processed */
 773        uint32_t hbq_count;             /* Count of configured HBQs */
 774        struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 775
 776        atomic_t fcp_qidx;              /* next work queue to post work to */
 777
 778        unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 779        unsigned long pci_bar1_map;     /* Physical address for PCI BAR1 */
 780        unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 781        void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 782                                           PCI BAR0 */
 783        void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 784                                            PCI BAR2 */
 785
 786        void __iomem *pci_bar0_memmap_p; /* Kernel memory mapped address for
 787                                            PCI BAR0 with dual-ULP support */
 788        void __iomem *pci_bar2_memmap_p; /* Kernel memory mapped address for
 789                                            PCI BAR2 with dual-ULP support */
 790        void __iomem *pci_bar4_memmap_p; /* Kernel memory mapped address for
 791                                            PCI BAR4 with dual-ULP support */
 792#define PCI_64BIT_BAR0  0
 793#define PCI_64BIT_BAR2  2
 794#define PCI_64BIT_BAR4  4
 795        void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 796        void __iomem *HAregaddr;        /* virtual address for host attn reg */
 797        void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 798        void __iomem *HSregaddr;        /* virtual address for host status
 799                                           reg */
 800        void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 801
 802        struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 803        struct lpfc_pgp   *port_gp;
 804        uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 805        uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 806
 807        int brd_no;                     /* FC board number */
 808        char SerialNumber[32];          /* adapter Serial Number */
 809        char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 810        char ModelDesc[256];            /* Model Description */
 811        char ModelName[80];             /* Model Name */
 812        char ProgramType[256];          /* Program Type */
 813        char Port[20];                  /* Port No */
 814        uint8_t vpd_flag;               /* VPD data flag */
 815
 816#define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 817#define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 818#define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 819#define VPD_PORT            0x8         /* valid vpd port data */
 820#define VPD_MASK            0xf         /* mask for any vpd data */
 821
 822        uint8_t soft_wwn_enable;
 823
 824        struct timer_list fcp_poll_timer;
 825        struct timer_list eratt_poll;
 826
 827        /*
 828         * stat  counters
 829         */
 830        uint64_t fc4InputRequests;
 831        uint64_t fc4OutputRequests;
 832        uint64_t fc4ControlRequests;
 833        uint64_t bg_guard_err_cnt;
 834        uint64_t bg_apptag_err_cnt;
 835        uint64_t bg_reftag_err_cnt;
 836
 837        /* fastpath list. */
 838        spinlock_t scsi_buf_list_get_lock;  /* SCSI buf alloc list lock */
 839        spinlock_t scsi_buf_list_put_lock;  /* SCSI buf free list lock */
 840        struct list_head lpfc_scsi_buf_list_get;
 841        struct list_head lpfc_scsi_buf_list_put;
 842        uint32_t total_scsi_bufs;
 843        struct list_head lpfc_iocb_list;
 844        uint32_t total_iocbq_bufs;
 845        struct list_head active_rrq_list;
 846        spinlock_t hbalock;
 847
 848        /* pci_mem_pools */
 849        struct pci_pool *lpfc_scsi_dma_buf_pool;
 850        struct pci_pool *lpfc_mbuf_pool;
 851        struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
 852        struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
 853        struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
 854        struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 855
 856        mempool_t *mbox_mem_pool;
 857        mempool_t *nlp_mem_pool;
 858        mempool_t *rrq_pool;
 859        mempool_t *active_rrq_pool;
 860
 861        struct fc_host_statistics link_stats;
 862        enum intr_type_t intr_type;
 863        uint32_t intr_mode;
 864#define LPFC_INTR_ERROR 0xFFFFFFFF
 865        struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 866
 867        struct list_head port_list;
 868        struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 869        uint16_t max_vpi;               /* Maximum virtual nports */
 870#define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 871        uint16_t max_vports;            /*
 872                                         * For IOV HBAs max_vpi can change
 873                                         * after a reset. max_vports is max
 874                                         * number of vports present. This can
 875                                         * be greater than max_vpi.
 876                                         */
 877        uint16_t vpi_base;
 878        uint16_t vfi_base;
 879        unsigned long *vpi_bmask;       /* vpi allocation table */
 880        uint16_t *vpi_ids;
 881        uint16_t vpi_count;
 882        struct list_head lpfc_vpi_blk_list;
 883
 884        /* Data structure used by fabric iocb scheduler */
 885        struct list_head fabric_iocb_list;
 886        atomic_t fabric_iocb_count;
 887        struct timer_list fabric_block_timer;
 888        unsigned long bit_flags;
 889#define FABRIC_COMANDS_BLOCKED  0
 890        atomic_t num_rsrc_err;
 891        atomic_t num_cmd_success;
 892        unsigned long last_rsrc_error_time;
 893        unsigned long last_ramp_down_time;
 894#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 895        struct dentry *hba_debugfs_root;
 896        atomic_t debugfs_vport_count;
 897        struct dentry *debug_hbqinfo;
 898        struct dentry *debug_dumpHostSlim;
 899        struct dentry *debug_dumpHBASlim;
 900        struct dentry *debug_dumpData;   /* BlockGuard BPL */
 901        struct dentry *debug_dumpDif;    /* BlockGuard BPL */
 902        struct dentry *debug_InjErrLBA;  /* LBA to inject errors at */
 903        struct dentry *debug_InjErrNPortID;  /* NPortID to inject errors at */
 904        struct dentry *debug_InjErrWWPN;  /* WWPN to inject errors at */
 905        struct dentry *debug_writeGuard; /* inject write guard_tag errors */
 906        struct dentry *debug_writeApp;   /* inject write app_tag errors */
 907        struct dentry *debug_writeRef;   /* inject write ref_tag errors */
 908        struct dentry *debug_readGuard;  /* inject read guard_tag errors */
 909        struct dentry *debug_readApp;    /* inject read app_tag errors */
 910        struct dentry *debug_readRef;    /* inject read ref_tag errors */
 911
 912        /* T10 DIF error injection */
 913        uint32_t lpfc_injerr_wgrd_cnt;
 914        uint32_t lpfc_injerr_wapp_cnt;
 915        uint32_t lpfc_injerr_wref_cnt;
 916        uint32_t lpfc_injerr_rgrd_cnt;
 917        uint32_t lpfc_injerr_rapp_cnt;
 918        uint32_t lpfc_injerr_rref_cnt;
 919        uint32_t lpfc_injerr_nportid;
 920        struct lpfc_name lpfc_injerr_wwpn;
 921        sector_t lpfc_injerr_lba;
 922#define LPFC_INJERR_LBA_OFF     (sector_t)(-1)
 923
 924        struct dentry *debug_slow_ring_trc;
 925        struct lpfc_debugfs_trc *slow_ring_trc;
 926        atomic_t slow_ring_trc_cnt;
 927        /* iDiag debugfs sub-directory */
 928        struct dentry *idiag_root;
 929        struct dentry *idiag_pci_cfg;
 930        struct dentry *idiag_bar_acc;
 931        struct dentry *idiag_que_info;
 932        struct dentry *idiag_que_acc;
 933        struct dentry *idiag_drb_acc;
 934        struct dentry *idiag_ctl_acc;
 935        struct dentry *idiag_mbx_acc;
 936        struct dentry *idiag_ext_acc;
 937#endif
 938
 939        /* Used for deferred freeing of ELS data buffers */
 940        struct list_head elsbuf;
 941        int elsbuf_cnt;
 942        int elsbuf_prev_cnt;
 943
 944        uint8_t temp_sensor_support;
 945        /* Fields used for heart beat. */
 946        unsigned long last_completion_time;
 947        unsigned long skipped_hb;
 948        struct timer_list hb_tmofunc;
 949        uint8_t hb_outstanding;
 950        struct timer_list rrq_tmr;
 951        enum hba_temp_state over_temp_state;
 952        /* ndlp reference management */
 953        spinlock_t ndlp_lock;
 954        /*
 955         * Following bit will be set for all buffer tags which are not
 956         * associated with any HBQ.
 957         */
 958#define QUE_BUFTAG_BIT  (1<<31)
 959        uint32_t buffer_tag_count;
 960        int wait_4_mlo_maint_flg;
 961        wait_queue_head_t wait_4_mlo_m_q;
 962        /* data structure used for latency data collection */
 963#define LPFC_NO_BUCKET     0
 964#define LPFC_LINEAR_BUCKET 1
 965#define LPFC_POWER2_BUCKET 2
 966        uint8_t  bucket_type;
 967        uint32_t bucket_base;
 968        uint32_t bucket_step;
 969
 970/* Maximum number of events that can be outstanding at any time*/
 971#define LPFC_MAX_EVT_COUNT 512
 972        atomic_t fast_event_count;
 973        uint32_t fcoe_eventtag;
 974        uint32_t fcoe_eventtag_at_fcf_scan;
 975        uint32_t fcoe_cvl_eventtag;
 976        uint32_t fcoe_cvl_eventtag_attn;
 977        struct lpfc_fcf fcf;
 978        uint8_t fc_map[3];
 979        uint8_t valid_vlan;
 980        uint16_t vlan_id;
 981        struct list_head fcf_conn_rec_list;
 982
 983        spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
 984        struct list_head ct_ev_waiters;
 985        struct unsol_rcv_ct_ctx ct_ctx[LPFC_CT_CTX_MAX];
 986        uint32_t ctx_idx;
 987
 988        uint8_t menlo_flag;     /* menlo generic flags */
 989#define HBA_MENLO_SUPPORT       0x1 /* HBA supports menlo commands */
 990        uint32_t iocb_cnt;
 991        uint32_t iocb_max;
 992        atomic_t sdev_cnt;
 993        uint8_t fips_spec_rev;
 994        uint8_t fips_level;
 995        spinlock_t devicelock;  /* lock for luns list */
 996        mempool_t *device_data_mem_pool;
 997        struct list_head luns;
 998};
 999
1000static inline struct Scsi_Host *

1001lpfc_shost_from_vport(struct lpfc_vport *vport)
1002{
1003        return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
1004}
1005
1006static inline void
1007lpfc_set_loopback_flag(struct lpfc_hba *phba)
1008{
1009        if (phba->cfg_topology == FLAGS_LOCAL_LB)
1010                phba->link_flag |= LS_LOOPBACK_MODE;
1011        else
1012                phba->link_flag &= ~LS_LOOPBACK_MODE;
1013}
1014
1015static inline int
1016lpfc_is_link_up(struct lpfc_hba *phba)
1017{
1018        return  phba->link_state == LPFC_LINK_UP ||
1019                phba->link_state == LPFC_CLEAR_LA ||
1020                phba->link_state == LPFC_HBA_READY;
1021}
1022
1023static inline void
1024lpfc_worker_wake_up(struct lpfc_hba *phba)
1025{
1026        /* Set the lpfc data pending flag */
1027        set_bit(LPFC_DATA_READY, &phba->data_flags);
1028
1029        /* Wake up worker thread */
1030        wake_up(&phba->work_waitq);
1031        return;
1032}
1033
1034static inline int
1035lpfc_readl(void __iomem *addr, uint32_t *data)
1036{
1037        uint32_t temp;
1038        temp = readl(addr);
1039        if (temp == 0xffffffff)
1040                return -EIO;
1041        *data = temp;
1042        return 0;
1043}
1044
1045static inline int
1046lpfc_sli_read_hs(struct lpfc_hba *phba)
1047{
1048        /*
1049         * There was a link/board error. Read the status register to retrieve
1050         * the error event and process it.
1051         */
1052        phba->sli.slistat.err_attn_event++;
1053
1054        /* Save status info and check for unplug error */
1055        if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
1056                lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
1057                lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
1058                return -EIO;
1059        }
1060
1061        /* Clear chip Host Attention error bit */
1062        writel(HA_ERATT, phba->HAregaddr);
1063        readl(phba->HAregaddr); /* flush */
1064        phba->pport->stopped = 1;
1065
1066        return 0;
1067}
1068