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) 2004-2008 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 struct lpfc_sli2_slim;
  25
  26 #define LPFC_MAX_TARGET         4096    /* max number of targets supported */
  27 #define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els
  28                                            requests */
  29 #define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
  30                                            the NameServer  before giving up. */
  31 #define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
  32 #define LPFC_DEFAULT_SG_SEG_CNT 64      /* sg element count per scsi cmnd */
  33 #define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
  34 #define LPFC_MAX_SG_SEG_CNT     4096    /* sg element count per scsi cmnd */
  35 #define LPFC_MAX_PROT_SG_SEG_CNT 4096   /* prot sg element count per scsi cmd*/
  36 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  37 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  38 #define LPFC_VNAME_LEN          100     /* vport symbolic name length */
  39 #define LPFC_TGTQ_INTERVAL      40000   /* Min amount of time between tgt
  40                                            queue depth change in millisecs */
  41 #define LPFC_TGTQ_RAMPUP_PCENT  5       /* Target queue rampup in percentage */
  42 #define LPFC_MIN_TGT_QDEPTH     100
  43 #define LPFC_MAX_TGT_QDEPTH     0xFFFF
  44
  45 #define  LPFC_MAX_BUCKET_COUNT 20       /* Maximum no. of buckets for stat data
  46                                            collection. */
  47 /*
  48  * Following time intervals are used of adjusting SCSI device
  49  * queue depths when there are driver resource error or Firmware
  50  * resource error.
  51  */
  52 #define QUEUE_RAMP_DOWN_INTERVAL        (1 * HZ)   /* 1 Second */
  53 #define QUEUE_RAMP_UP_INTERVAL          (300 * HZ) /* 5 minutes */
  54
  55 /* Number of exchanges reserved for discovery to complete */
  56 #define LPFC_DISC_IOCB_BUFF_COUNT 20
  57
  58 #define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  59 #define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  60
  61 /* Error Attention event polling interval */
  62 #define LPFC_ERATT_POLL_INTERVAL        5 /* EATT poll interval in seconds */
  63
  64 /* Define macros for 64 bit support */
  65 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  66 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  67 #define getPaddr(high, low)  ((dma_addr_t)( \
  68                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  69 /* Provide maximum configuration definitions. */
  70 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  71 #define FC_MAX_ADPTMSG          64
  72
  73 #define MAX_HBAEVT      32
  74
  75 /* Number of MSI-X vectors the driver uses */
  76 #define LPFC_MSIX_VECTORS       2
  77
  78 /* lpfc wait event data ready flag */
  79 #define LPFC_DATA_READY         (1<<0)
  80
  81 enum lpfc_polling_flags {
  82         ENABLE_FCP_RING_POLLING = 0x1,
  83         DISABLE_FCP_RING_INT    = 0x2
  84 };
  85
  86 /* Provide DMA memory definitions the driver uses per port instance. */
  87 struct lpfc_dmabuf {
  88         struct list_head list;
  89         void *virt;             /* virtual address ptr */
  90         dma_addr_t phys;        /* mapped address */
  91         uint32_t   buffer_tag;  /* used for tagged queue ring */
  92 };
  93
  94 struct lpfc_dma_pool {
  95         struct lpfc_dmabuf   *elements;
  96         uint32_t    max_count;
  97         uint32_t    current_count;
  98 };
  99
 100 struct hbq_dmabuf {
 101         struct lpfc_dmabuf dbuf;
 102         uint32_t size;
 103         uint32_t tag;
 104 };
 105
 106 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
 107 #define MEM_PRI         0x100
 108
 109
 110 /****************************************************************************/
 111 /*      Device VPD save area                                                */
 112 /****************************************************************************/
 113 typedef struct lpfc_vpd {
 114         uint32_t status;        /* vpd status value */
 115         uint32_t length;        /* number of bytes actually returned */
 116         struct {
 117                 uint32_t rsvd1; /* Revision numbers */
 118                 uint32_t biuRev;
 119                 uint32_t smRev;
 120                 uint32_t smFwRev;
 121                 uint32_t endecRev;
 122                 uint16_t rBit;
 123                 uint8_t fcphHigh;
 124                 uint8_t fcphLow;
 125                 uint8_t feaLevelHigh;
 126                 uint8_t feaLevelLow;
 127                 uint32_t postKernRev;
 128                 uint32_t opFwRev;
 129                 uint8_t opFwName[16];
 130                 uint32_t sli1FwRev;
 131                 uint8_t sli1FwName[16];
 132                 uint32_t sli2FwRev;
 133                 uint8_t sli2FwName[16];
 134         } rev;
 135         struct {
 136 #ifdef __BIG_ENDIAN_BITFIELD
 137                 uint32_t rsvd2  :24;  /* Reserved                             */
 138                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 139                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 140                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 141                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 142                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 143                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 144                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 145                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 146 #else   /*  __LITTLE_ENDIAN */
 147                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 148                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 149                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 150                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 151                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 152                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 153                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 154                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 155                 uint32_t rsvd2  :24;  /* Reserved                             */
 156 #endif
 157         } sli3Feat;
 158 } lpfc_vpd_t;
 159
 160 struct lpfc_scsi_buf;
 161
 162
 163 /*
 164  * lpfc stat counters
 165  */
 166 struct lpfc_stats {
 167         /* Statistics for ELS commands */
 168         uint32_t elsLogiCol;
 169         uint32_t elsRetryExceeded;
 170         uint32_t elsXmitRetry;
 171         uint32_t elsDelayRetry;
 172         uint32_t elsRcvDrop;
 173         uint32_t elsRcvFrame;
 174         uint32_t elsRcvRSCN;
 175         uint32_t elsRcvRNID;
 176         uint32_t elsRcvFARP;
 177         uint32_t elsRcvFARPR;
 178         uint32_t elsRcvFLOGI;
 179         uint32_t elsRcvPLOGI;
 180         uint32_t elsRcvADISC;
 181         uint32_t elsRcvPDISC;
 182         uint32_t elsRcvFAN;
 183         uint32_t elsRcvLOGO;
 184         uint32_t elsRcvPRLO;
 185         uint32_t elsRcvPRLI;
 186         uint32_t elsRcvLIRR;
 187         uint32_t elsRcvRPS;
 188         uint32_t elsRcvRPL;
 189         uint32_t elsXmitFLOGI;
 190         uint32_t elsXmitFDISC;
 191         uint32_t elsXmitPLOGI;
 192         uint32_t elsXmitPRLI;
 193         uint32_t elsXmitADISC;
 194         uint32_t elsXmitLOGO;
 195         uint32_t elsXmitSCR;
 196         uint32_t elsXmitRNID;
 197         uint32_t elsXmitFARP;
 198         uint32_t elsXmitFARPR;
 199         uint32_t elsXmitACC;
 200         uint32_t elsXmitLSRJT;
 201
 202         uint32_t frameRcvBcast;
 203         uint32_t frameRcvMulti;
 204         uint32_t strayXmitCmpl;
 205         uint32_t frameXmitDelay;
 206         uint32_t xriCmdCmpl;
 207         uint32_t xriStatErr;
 208         uint32_t LinkUp;
 209         uint32_t LinkDown;
 210         uint32_t LinkMultiEvent;
 211         uint32_t NoRcvBuf;
 212         uint32_t fcpCmd;
 213         uint32_t fcpCmpl;
 214         uint32_t fcpRspErr;
 215         uint32_t fcpRemoteStop;
 216         uint32_t fcpPortRjt;
 217         uint32_t fcpPortBusy;
 218         uint32_t fcpError;
 219         uint32_t fcpLocalErr;
 220 };
 221
 222 enum sysfs_mbox_state {
 223         SMBOX_IDLE,
 224         SMBOX_WRITING,
 225         SMBOX_READING
 226 };
 227
 228 struct lpfc_sysfs_mbox {
 229         enum sysfs_mbox_state state;
 230         size_t                offset;
 231         struct lpfcMboxq *    mbox;
 232 };
 233
 234 struct lpfc_hba;
 235
 236
 237 enum discovery_state {
 238         LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 239         LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 240         LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 241         LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 242         LPFC_FDISC             =  8,    /* FDISC sent for vport */
 243         LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 244                                          * configured */
 245         LPFC_NS_REG            =  10,   /* Register with NameServer */
 246         LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 247         LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 248                                          * device authentication / discovery */
 249         LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 250         LPFC_VPORT_READY       =  32,
 251 };
 252
 253 enum hba_state {
 254         LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 255         LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 256         LPFC_INIT_START      =   2,   /* Initial state after board reset */
 257         LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 258         LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 259         LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 260         LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 261                                        * CLEAR_LA */
 262         LPFC_HBA_READY       =  32,
 263         LPFC_HBA_ERROR       =  -1
 264 };
 265
 266 struct lpfc_vport {
 267         struct list_head listentry;
 268         struct lpfc_hba *phba;
 269         uint8_t port_type;
 270 #define LPFC_PHYSICAL_PORT 1
 271 #define LPFC_NPIV_PORT  2
 272 #define LPFC_FABRIC_PORT 3
 273         enum discovery_state port_state;
 274
 275         uint16_t vpi;
 276
 277         uint32_t fc_flag;       /* FC flags */
 278 /* Several of these flags are HBA centric and should be moved to
 279  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 280  */
 281 #define FC_PT2PT                0x1      /* pt2pt with no fabric */
 282 #define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 283 #define FC_DISC_TMO             0x4      /* Discovery timer running */
 284 #define FC_PUBLIC_LOOP          0x8      /* Public loop */
 285 #define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 286 #define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 287 #define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 288 #define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 289 #define FC_FABRIC               0x100    /* We are fabric attached */
 290 #define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 291 #define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 292 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 293 #define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 294 #define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 295 #define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 296 #define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 297
 298         uint32_t ct_flags;
 299 #define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 300 #define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 301 #define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 302 #define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 303 #define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 304
 305         struct list_head fc_nodes;
 306
 307         /* Keep counters for the number of entries in each list. */
 308         uint16_t fc_plogi_cnt;
 309         uint16_t fc_adisc_cnt;
 310         uint16_t fc_reglogin_cnt;
 311         uint16_t fc_prli_cnt;
 312         uint16_t fc_unmap_cnt;
 313         uint16_t fc_map_cnt;
 314         uint16_t fc_npr_cnt;
 315         uint16_t fc_unused_cnt;
 316         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 317
 318         uint32_t fc_myDID;      /* fibre channel S_ID */
 319         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 320
 321         int32_t stopped;   /* HBA has not been restarted since last ERATT */
 322         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 323
 324         uint32_t num_disc_nodes;        /*in addition to hba_state */
 325
 326         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 327         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 328         uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 329         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 330         struct lpfc_name fc_nodename;   /* fc nodename */
 331         struct lpfc_name fc_portname;   /* fc portname */
 332
 333         struct lpfc_work_evt disc_timeout_evt;
 334
 335         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 336         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 337         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 338
 339         spinlock_t work_port_lock;
 340         uint32_t work_port_events; /* Timeout to be handled  */
 341 #define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 342 #define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 343 #define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 344
 345 #define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 346 #define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 347 #define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 348 #define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 349 #define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 350
 351         struct timer_list fc_fdmitmo;
 352         struct timer_list els_tmofunc;
 353
 354         int unreg_vpi_cmpl;
 355
 356         uint8_t load_flag;
 357 #define FC_LOADING              0x1     /* HBA in process of loading drvr */
 358 #define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 359         /* Vport Config Parameters */
 360         uint32_t cfg_scan_down;
 361         uint32_t cfg_lun_queue_depth;
 362         uint32_t cfg_nodev_tmo;
 363         uint32_t cfg_devloss_tmo;
 364         uint32_t cfg_restrict_login;
 365         uint32_t cfg_peer_port_login;
 366         uint32_t cfg_fcp_class;
 367         uint32_t cfg_use_adisc;
 368         uint32_t cfg_fdmi_on;
 369         uint32_t cfg_discovery_threads;
 370         uint32_t cfg_log_verbose;
 371         uint32_t cfg_max_luns;
 372         uint32_t cfg_enable_da_id;
 373         uint32_t cfg_max_scsicmpl_time;
 374
 375         uint32_t dev_loss_tmo_changed;
 376
 377         struct fc_vport *fc_vport;
 378
 379 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 380         struct dentry *debug_disc_trc;
 381         struct dentry *debug_nodelist;
 382         struct dentry *vport_debugfs_root;
 383         struct lpfc_debugfs_trc *disc_trc;
 384         atomic_t disc_trc_cnt;
 385 #endif
 386         uint8_t stat_data_enabled;
 387         uint8_t stat_data_blocked;
 388 };
 389
 390 struct hbq_s {
 391         uint16_t entry_count;     /* Current number of HBQ slots */
 392         uint16_t buffer_count;    /* Current number of buffers posted */
 393         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 394         uint32_t hbqPutIdx;       /* HBQ slot to use */
 395         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 396         void    *hbq_virt;        /* Virtual ptr to this hbq */
 397         struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 398                                   /* Callback for HBQ buffer allocation */
 399         struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 400                                   /* Callback for HBQ buffer free */
 401         void               (*hbq_free_buffer) (struct lpfc_hba *,
 402                                                struct hbq_dmabuf *);
 403 };
 404
 405 #define LPFC_MAX_HBQS  4
 406 /* this matches the position in the lpfc_hbq_defs array */
 407 #define LPFC_ELS_HBQ    0
 408 #define LPFC_EXTRA_HBQ  1
 409
 410 enum hba_temp_state {
 411         HBA_NORMAL_TEMP,
 412         HBA_OVER_TEMP
 413 };
 414
 415 enum intr_type_t {
 416         NONE = 0,
 417         INTx,
 418         MSI,
 419         MSIX,
 420 };
 421
 422 struct lpfc_hba {
 423         struct lpfc_sli sli;
 424         uint32_t sli_rev;               /* SLI2 or SLI3 */
 425         uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 426 #define LPFC_SLI3_HBQ_ENABLED           0x01
 427 #define LPFC_SLI3_NPIV_ENABLED          0x02
 428 #define LPFC_SLI3_VPORT_TEARDOWN        0x04
 429 #define LPFC_SLI3_CRP_ENABLED           0x08
 430 #define LPFC_SLI3_INB_ENABLED           0x10
 431 #define LPFC_SLI3_BG_ENABLED            0x20
 432         uint32_t iocb_cmd_size;
 433         uint32_t iocb_rsp_size;
 434
 435         enum hba_state link_state;
 436         uint32_t link_flag;     /* link state flags */
 437 #define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 438                                         /* This flag is set while issuing */
 439                                         /* INIT_LINK mailbox command */
 440 #define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 441 #define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 442
 443         uint32_t hba_flag;      /* hba generic flags */
 444 #define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 445
 446         struct lpfc_dmabuf slim2p;
 447
 448         MAILBOX_t *mbox;
 449         uint32_t *inb_ha_copy;
 450         uint32_t *inb_counter;
 451         uint32_t inb_last_counter;
 452         uint32_t ha_copy;
 453         struct _PCB *pcb;
 454         struct _IOCB *IOCBs;
 455
 456         struct lpfc_dmabuf hbqslimp;
 457
 458         uint16_t pci_cfg_value;
 459
 460         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 461
 462         uint32_t fc_eventTag;   /* event tag for link attention */
 463
 464         /* These fields used to be binfo */
 465         uint32_t fc_pref_DID;   /* preferred D_ID */
 466         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 467         uint32_t fc_edtov;      /* E_D_TOV timer value */
 468         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 469         uint32_t fc_ratov;      /* R_A_TOV timer value */
 470         uint32_t fc_rttov;      /* R_T_TOV timer value */
 471         uint32_t fc_altov;      /* AL_TOV timer value */
 472         uint32_t fc_crtov;      /* C_R_TOV timer value */
 473         uint32_t fc_citov;      /* C_I_TOV timer value */
 474
 475         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 476         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 477
 478         uint32_t lmt;
 479
 480         uint32_t fc_topology;   /* link topology, from LINK INIT */
 481
 482         struct lpfc_stats fc_stat;
 483
 484         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 485         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 486
 487         uint8_t  wwnn[8];
 488         uint8_t  wwpn[8];
 489         uint32_t RandomData[7];
 490
 491         /* HBA Config Parameters */
 492         uint32_t cfg_ack0;
 493         uint32_t cfg_enable_npiv;
 494         uint32_t cfg_topology;
 495         uint32_t cfg_link_speed;
 496         uint32_t cfg_cr_delay;
 497         uint32_t cfg_cr_count;
 498         uint32_t cfg_multi_ring_support;
 499         uint32_t cfg_multi_ring_rctl;
 500         uint32_t cfg_multi_ring_type;
 501         uint32_t cfg_poll;
 502         uint32_t cfg_poll_tmo;
 503         uint32_t cfg_use_msi;
 504         uint32_t cfg_sg_seg_cnt;
 505         uint32_t cfg_prot_sg_seg_cnt;
 506         uint32_t cfg_sg_dma_buf_size;
 507         uint64_t cfg_soft_wwnn;
 508         uint64_t cfg_soft_wwpn;
 509         uint32_t cfg_hba_queue_depth;
 510         uint32_t cfg_enable_hba_reset;
 511         uint32_t cfg_enable_hba_heartbeat;
 512         uint32_t cfg_enable_bg;
 513
 514         lpfc_vpd_t vpd;         /* vital product data */
 515
 516         struct pci_dev *pcidev;
 517         struct list_head      work_list;
 518         uint32_t              work_ha;      /* Host Attention Bits for WT */
 519         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 520         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 521         uint32_t              work_status[2]; /* Extra status from SLIM */
 522
 523         wait_queue_head_t    work_waitq;
 524         struct task_struct   *worker_thread;
 525         unsigned long data_flags;
 526
 527         uint32_t hbq_in_use;            /* HBQs in use flag */
 528         struct list_head hbqbuf_in_list;  /* in-fly hbq buffer list */
 529         uint32_t hbq_count;             /* Count of configured HBQs */
 530         struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 531
 532         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 533         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 534         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 535                                            PCI BAR0 */
 536         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 537                                             PCI BAR2 */
 538
 539         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 540         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 541         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 542         void __iomem *HSregaddr;        /* virtual address for host status
 543                                            reg */
 544         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 545
 546         struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 547         struct lpfc_pgp   *port_gp;
 548         uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 549         uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 550
 551         int brd_no;                     /* FC board number */
 552
 553         char SerialNumber[32];          /* adapter Serial Number */
 554         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 555         char ModelDesc[256];            /* Model Description */
 556         char ModelName[80];             /* Model Name */
 557         char ProgramType[256];          /* Program Type */
 558         char Port[20];                  /* Port No */
 559         uint8_t vpd_flag;               /* VPD data flag */
 560
 561 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 562 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 563 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 564 #define VPD_PORT            0x8         /* valid vpd port data */
 565 #define VPD_MASK            0xf         /* mask for any vpd data */
 566
 567         uint8_t soft_wwn_enable;
 568
 569         struct timer_list fcp_poll_timer;
 570         struct timer_list eratt_poll;
 571
 572         /*
 573          * stat  counters
 574          */
 575         uint64_t fc4InputRequests;
 576         uint64_t fc4OutputRequests;
 577         uint64_t fc4ControlRequests;
 578         uint64_t bg_guard_err_cnt;
 579         uint64_t bg_apptag_err_cnt;
 580         uint64_t bg_reftag_err_cnt;
 581
 582         struct lpfc_sysfs_mbox sysfs_mbox;
 583
 584         /* fastpath list. */
 585         spinlock_t scsi_buf_list_lock;
 586         struct list_head lpfc_scsi_buf_list;
 587         uint32_t total_scsi_bufs;
 588         struct list_head lpfc_iocb_list;
 589         uint32_t total_iocbq_bufs;
 590         spinlock_t hbalock;
 591
 592         /* pci_mem_pools */
 593         struct pci_pool *lpfc_scsi_dma_buf_pool;
 594         struct pci_pool *lpfc_mbuf_pool;
 595         struct pci_pool *lpfc_hbq_pool;
 596         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 597
 598         mempool_t *mbox_mem_pool;
 599         mempool_t *nlp_mem_pool;
 600
 601         struct fc_host_statistics link_stats;
 602         enum intr_type_t intr_type;
 603         uint32_t intr_mode;
 604 #define LPFC_INTR_ERROR 0xFFFFFFFF
 605         struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 606
 607         struct list_head port_list;
 608         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 609         uint16_t max_vpi;               /* Maximum virtual nports */
 610 #define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 611         unsigned long *vpi_bmask;       /* vpi allocation table */
 612
 613         /* Data structure used by fabric iocb scheduler */
 614         struct list_head fabric_iocb_list;
 615         atomic_t fabric_iocb_count;
 616         struct timer_list fabric_block_timer;
 617         unsigned long bit_flags;
 618 #define FABRIC_COMANDS_BLOCKED  0
 619         atomic_t num_rsrc_err;
 620         atomic_t num_cmd_success;
 621         unsigned long last_rsrc_error_time;
 622         unsigned long last_ramp_down_time;
 623         unsigned long last_ramp_up_time;
 624 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 625         struct dentry *hba_debugfs_root;
 626         atomic_t debugfs_vport_count;
 627         struct dentry *debug_hbqinfo;
 628         struct dentry *debug_dumpHostSlim;
 629         struct dentry *debug_dumpHBASlim;
 630         struct dentry *debug_dumpData;   /* BlockGuard BPL*/
 631         struct dentry *debug_dumpDif;    /* BlockGuard BPL*/
 632         struct dentry *debug_slow_ring_trc;
 633         struct lpfc_debugfs_trc *slow_ring_trc;
 634         atomic_t slow_ring_trc_cnt;
 635 #endif
 636
 637         /* Used for deferred freeing of ELS data buffers */
 638         struct list_head elsbuf;
 639         int elsbuf_cnt;
 640         int elsbuf_prev_cnt;
 641
 642         uint8_t temp_sensor_support;
 643         /* Fields used for heart beat. */
 644         unsigned long last_completion_time;
 645         struct timer_list hb_tmofunc;
 646         uint8_t hb_outstanding;
 647         enum hba_temp_state over_temp_state;
 648         /* ndlp reference management */
 649         spinlock_t ndlp_lock;
 650         /*
 651          * Following bit will be set for all buffer tags which are not
 652          * associated with any HBQ.
 653          */
 654 #define QUE_BUFTAG_BIT  (1<<31)
 655         uint32_t buffer_tag_count;
 656         int wait_4_mlo_maint_flg;
 657         wait_queue_head_t wait_4_mlo_m_q;
 658         /* data structure used for latency data collection */
 659 #define LPFC_NO_BUCKET     0
 660 #define LPFC_LINEAR_BUCKET 1
 661 #define LPFC_POWER2_BUCKET 2
 662         uint8_t  bucket_type;
 663         uint32_t bucket_base;
 664         uint32_t bucket_step;
 665
 666 /* Maximum number of events that can be outstanding at any time*/
 667 #define LPFC_MAX_EVT_COUNT 512
 668         atomic_t fast_event_count;
 669 };
 670
 671 static inline struct Scsi_Host *
 672 lpfc_shost_from_vport(struct lpfc_vport *vport)
 673 {
 674         return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 675 }
 676
 677 static inline void
 678 lpfc_set_loopback_flag(struct lpfc_hba *phba)
 679 {
 680         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 681                 phba->link_flag |= LS_LOOPBACK_MODE;
 682         else
 683                 phba->link_flag &= ~LS_LOOPBACK_MODE;
 684 }
 685
 686 static inline int
 687 lpfc_is_link_up(struct lpfc_hba *phba)
 688 {
 689         return  phba->link_state == LPFC_LINK_UP ||
 690                 phba->link_state == LPFC_CLEAR_LA ||
 691                 phba->link_state == LPFC_HBA_READY;
 692 }
 693
 694 static inline void
 695 lpfc_worker_wake_up(struct lpfc_hba *phba)
 696 {
 697         /* Set the lpfc data pending flag */
 698         set_bit(LPFC_DATA_READY, &phba->data_flags);
 699
 700         /* Wake up worker thread */
 701         wake_up(&phba->work_waitq);
 702         return;
 703 }
 704
 705 static inline void
 706 lpfc_sli_read_hs(struct lpfc_hba *phba)
 707 {
 708         /*
 709          * There was a link/board error. Read the status register to retrieve
 710          * the error event and process it.
 711          */
 712         phba->sli.slistat.err_attn_event++;
 713
 714         /* Save status info */
 715         phba->work_hs = readl(phba->HSregaddr);
 716         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
 717         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
 718
 719         /* Clear chip Host Attention error bit */
 720         writel(HA_ERATT, phba->HAregaddr);
 721         readl(phba->HAregaddr); /* flush */
 722         phba->pport->stopped = 1;
 723
 724         return;
 725 }
 726