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_MAX_SG_SEG_CNT     256     /* sg element count per scsi cmnd */
  34 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  35 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  36 #define LPFC_VNAME_LEN          100     /* vport symbolic name length */
  37
  38 /*
  39  * Following time intervals are used of adjusting SCSI device
  40  * queue depths when there are driver resource error or Firmware
  41  * resource error.
  42  */
  43 #define QUEUE_RAMP_DOWN_INTERVAL        (1 * HZ)   /* 1 Second */
  44 #define QUEUE_RAMP_UP_INTERVAL          (300 * HZ) /* 5 minutes */
  45
  46 /* Number of exchanges reserved for discovery to complete */
  47 #define LPFC_DISC_IOCB_BUFF_COUNT 20
  48
  49 #define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  50 #define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  51
  52 /* Error Attention event polling interval */
  53 #define LPFC_ERATT_POLL_INTERVAL        5 /* EATT poll interval in seconds */
  54
  55 /* Define macros for 64 bit support */
  56 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  57 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  58 #define getPaddr(high, low)  ((dma_addr_t)( \
  59                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  60 /* Provide maximum configuration definitions. */
  61 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  62 #define FC_MAX_ADPTMSG          64
  63
  64 #define MAX_HBAEVT      32
  65
  66 /* Number of MSI-X vectors the driver uses */
  67 #define LPFC_MSIX_VECTORS       2
  68
  69 /* lpfc wait event data ready flag */
  70 #define LPFC_DATA_READY         (1<<0)
  71
  72 enum lpfc_polling_flags {
  73         ENABLE_FCP_RING_POLLING = 0x1,
  74         DISABLE_FCP_RING_INT    = 0x2
  75 };
  76
  77 /* Provide DMA memory definitions the driver uses per port instance. */
  78 struct lpfc_dmabuf {
  79         struct list_head list;
  80         void *virt;             /* virtual address ptr */
  81         dma_addr_t phys;        /* mapped address */
  82         uint32_t   buffer_tag;  /* used for tagged queue ring */
  83 };
  84
  85 struct lpfc_dma_pool {
  86         struct lpfc_dmabuf   *elements;
  87         uint32_t    max_count;
  88         uint32_t    current_count;
  89 };
  90
  91 struct hbq_dmabuf {
  92         struct lpfc_dmabuf dbuf;
  93         uint32_t size;
  94         uint32_t tag;
  95 };
  96
  97 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
  98 #define MEM_PRI         0x100
  99
 100
 101 /****************************************************************************/
 102 /*      Device VPD save area                                                */
 103 /****************************************************************************/
 104 typedef struct lpfc_vpd {
 105         uint32_t status;        /* vpd status value */
 106         uint32_t length;        /* number of bytes actually returned */
 107         struct {
 108                 uint32_t rsvd1; /* Revision numbers */
 109                 uint32_t biuRev;
 110                 uint32_t smRev;
 111                 uint32_t smFwRev;
 112                 uint32_t endecRev;
 113                 uint16_t rBit;
 114                 uint8_t fcphHigh;
 115                 uint8_t fcphLow;
 116                 uint8_t feaLevelHigh;
 117                 uint8_t feaLevelLow;
 118                 uint32_t postKernRev;
 119                 uint32_t opFwRev;
 120                 uint8_t opFwName[16];
 121                 uint32_t sli1FwRev;
 122                 uint8_t sli1FwName[16];
 123                 uint32_t sli2FwRev;
 124                 uint8_t sli2FwName[16];
 125         } rev;
 126         struct {
 127 #ifdef __BIG_ENDIAN_BITFIELD
 128                 uint32_t rsvd2  :24;  /* Reserved                             */
 129                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 130                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 131                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 132                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 133                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 134                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 135                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 136                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 137 #else   /*  __LITTLE_ENDIAN */
 138                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 139                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 140                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 141                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 142                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 143                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 144                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 145                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 146                 uint32_t rsvd2  :24;  /* Reserved                             */
 147 #endif
 148         } sli3Feat;
 149 } lpfc_vpd_t;
 150
 151 struct lpfc_scsi_buf;
 152
 153
 154 /*
 155  * lpfc stat counters
 156  */
 157 struct lpfc_stats {
 158         /* Statistics for ELS commands */
 159         uint32_t elsLogiCol;
 160         uint32_t elsRetryExceeded;
 161         uint32_t elsXmitRetry;
 162         uint32_t elsDelayRetry;
 163         uint32_t elsRcvDrop;
 164         uint32_t elsRcvFrame;
 165         uint32_t elsRcvRSCN;
 166         uint32_t elsRcvRNID;
 167         uint32_t elsRcvFARP;
 168         uint32_t elsRcvFARPR;
 169         uint32_t elsRcvFLOGI;
 170         uint32_t elsRcvPLOGI;
 171         uint32_t elsRcvADISC;
 172         uint32_t elsRcvPDISC;
 173         uint32_t elsRcvFAN;
 174         uint32_t elsRcvLOGO;
 175         uint32_t elsRcvPRLO;
 176         uint32_t elsRcvPRLI;
 177         uint32_t elsRcvLIRR;
 178         uint32_t elsRcvRPS;
 179         uint32_t elsRcvRPL;
 180         uint32_t elsXmitFLOGI;
 181         uint32_t elsXmitFDISC;
 182         uint32_t elsXmitPLOGI;
 183         uint32_t elsXmitPRLI;
 184         uint32_t elsXmitADISC;
 185         uint32_t elsXmitLOGO;
 186         uint32_t elsXmitSCR;
 187         uint32_t elsXmitRNID;
 188         uint32_t elsXmitFARP;
 189         uint32_t elsXmitFARPR;
 190         uint32_t elsXmitACC;
 191         uint32_t elsXmitLSRJT;
 192
 193         uint32_t frameRcvBcast;
 194         uint32_t frameRcvMulti;
 195         uint32_t strayXmitCmpl;
 196         uint32_t frameXmitDelay;
 197         uint32_t xriCmdCmpl;
 198         uint32_t xriStatErr;
 199         uint32_t LinkUp;
 200         uint32_t LinkDown;
 201         uint32_t LinkMultiEvent;
 202         uint32_t NoRcvBuf;
 203         uint32_t fcpCmd;
 204         uint32_t fcpCmpl;
 205         uint32_t fcpRspErr;
 206         uint32_t fcpRemoteStop;
 207         uint32_t fcpPortRjt;
 208         uint32_t fcpPortBusy;
 209         uint32_t fcpError;
 210         uint32_t fcpLocalErr;
 211 };
 212
 213 enum sysfs_mbox_state {
 214         SMBOX_IDLE,
 215         SMBOX_WRITING,
 216         SMBOX_READING
 217 };
 218
 219 struct lpfc_sysfs_mbox {
 220         enum sysfs_mbox_state state;
 221         size_t                offset;
 222         struct lpfcMboxq *    mbox;
 223 };
 224
 225 struct lpfc_hba;
 226
 227
 228 enum discovery_state {
 229         LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 230         LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 231         LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 232         LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 233         LPFC_FDISC             =  8,    /* FDISC sent for vport */
 234         LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 235                                          * configured */
 236         LPFC_NS_REG            =  10,   /* Register with NameServer */
 237         LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 238         LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 239                                          * device authentication / discovery */
 240         LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 241         LPFC_VPORT_READY       =  32,
 242 };
 243
 244 enum hba_state {
 245         LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 246         LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 247         LPFC_INIT_START      =   2,   /* Initial state after board reset */
 248         LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 249         LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 250         LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 251         LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 252                                        * CLEAR_LA */
 253         LPFC_HBA_READY       =  32,
 254         LPFC_HBA_ERROR       =  -1
 255 };
 256
 257 struct lpfc_vport {
 258         struct list_head listentry;
 259         struct lpfc_hba *phba;
 260         uint8_t port_type;
 261 #define LPFC_PHYSICAL_PORT 1
 262 #define LPFC_NPIV_PORT  2
 263 #define LPFC_FABRIC_PORT 3
 264         enum discovery_state port_state;
 265
 266         uint16_t vpi;
 267
 268         uint32_t fc_flag;       /* FC flags */
 269 /* Several of these flags are HBA centric and should be moved to
 270  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 271  */
 272 #define FC_PT2PT                0x1      /* pt2pt with no fabric */
 273 #define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 274 #define FC_DISC_TMO             0x4      /* Discovery timer running */
 275 #define FC_PUBLIC_LOOP          0x8      /* Public loop */
 276 #define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 277 #define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 278 #define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 279 #define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 280 #define FC_FABRIC               0x100    /* We are fabric attached */
 281 #define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 282 #define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 283 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 284 #define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 285 #define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 286 #define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 287 #define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 288
 289         uint32_t ct_flags;
 290 #define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 291 #define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 292 #define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 293 #define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 294 #define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 295
 296         struct list_head fc_nodes;
 297
 298         /* Keep counters for the number of entries in each list. */
 299         uint16_t fc_plogi_cnt;
 300         uint16_t fc_adisc_cnt;
 301         uint16_t fc_reglogin_cnt;
 302         uint16_t fc_prli_cnt;
 303         uint16_t fc_unmap_cnt;
 304         uint16_t fc_map_cnt;
 305         uint16_t fc_npr_cnt;
 306         uint16_t fc_unused_cnt;
 307         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 308
 309         uint32_t fc_myDID;      /* fibre channel S_ID */
 310         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 311
 312         int32_t stopped;   /* HBA has not been restarted since last ERATT */
 313         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 314
 315         uint32_t num_disc_nodes;        /*in addition to hba_state */
 316
 317         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 318         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 319         uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 320         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 321         struct lpfc_name fc_nodename;   /* fc nodename */
 322         struct lpfc_name fc_portname;   /* fc portname */
 323
 324         struct lpfc_work_evt disc_timeout_evt;
 325
 326         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 327         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 328         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 329
 330         spinlock_t work_port_lock;
 331         uint32_t work_port_events; /* Timeout to be handled  */
 332 #define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 333 #define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 334 #define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 335
 336 #define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 337 #define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 338 #define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 339 #define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 340 #define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 341
 342         struct timer_list fc_fdmitmo;
 343         struct timer_list els_tmofunc;
 344
 345         int unreg_vpi_cmpl;
 346
 347         uint8_t load_flag;
 348 #define FC_LOADING              0x1     /* HBA in process of loading drvr */
 349 #define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 350         char  *vname;                   /* Application assigned name */
 351
 352         /* Vport Config Parameters */
 353         uint32_t cfg_scan_down;
 354         uint32_t cfg_lun_queue_depth;
 355         uint32_t cfg_nodev_tmo;
 356         uint32_t cfg_devloss_tmo;
 357         uint32_t cfg_restrict_login;
 358         uint32_t cfg_peer_port_login;
 359         uint32_t cfg_fcp_class;
 360         uint32_t cfg_use_adisc;
 361         uint32_t cfg_fdmi_on;
 362         uint32_t cfg_discovery_threads;
 363         uint32_t cfg_log_verbose;
 364         uint32_t cfg_max_luns;
 365         uint32_t cfg_enable_da_id;
 366
 367         uint32_t dev_loss_tmo_changed;
 368
 369         struct fc_vport *fc_vport;
 370
 371 #ifdef CONFIG_LPFC_DEBUG_FS
 372         struct dentry *debug_disc_trc;
 373         struct dentry *debug_nodelist;
 374         struct dentry *vport_debugfs_root;
 375         struct lpfc_debugfs_trc *disc_trc;
 376         atomic_t disc_trc_cnt;
 377 #endif
 378 };
 379
 380 struct hbq_s {
 381         uint16_t entry_count;     /* Current number of HBQ slots */
 382         uint16_t buffer_count;    /* Current number of buffers posted */
 383         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 384         uint32_t hbqPutIdx;       /* HBQ slot to use */
 385         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 386         void    *hbq_virt;        /* Virtual ptr to this hbq */
 387         struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 388                                   /* Callback for HBQ buffer allocation */
 389         struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 390                                   /* Callback for HBQ buffer free */
 391         void               (*hbq_free_buffer) (struct lpfc_hba *,
 392                                                struct hbq_dmabuf *);
 393 };
 394
 395 #define LPFC_MAX_HBQS  4
 396 /* this matches the position in the lpfc_hbq_defs array */
 397 #define LPFC_ELS_HBQ    0
 398 #define LPFC_EXTRA_HBQ  1
 399
 400 enum hba_temp_state {
 401         HBA_NORMAL_TEMP,
 402         HBA_OVER_TEMP
 403 };
 404
 405 enum intr_type_t {
 406         NONE = 0,
 407         INTx,
 408         MSI,
 409         MSIX,
 410 };
 411
 412 struct lpfc_hba {
 413         struct lpfc_sli sli;
 414         uint32_t sli_rev;               /* SLI2 or SLI3 */
 415         uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 416 #define LPFC_SLI3_HBQ_ENABLED           0x01
 417 #define LPFC_SLI3_NPIV_ENABLED          0x02
 418 #define LPFC_SLI3_VPORT_TEARDOWN        0x04
 419 #define LPFC_SLI3_CRP_ENABLED           0x08
 420 #define LPFC_SLI3_INB_ENABLED           0x10
 421         uint32_t iocb_cmd_size;
 422         uint32_t iocb_rsp_size;
 423
 424         enum hba_state link_state;
 425         uint32_t link_flag;     /* link state flags */
 426 #define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 427                                         /* This flag is set while issuing */
 428                                         /* INIT_LINK mailbox command */
 429 #define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 430 #define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 431
 432         uint32_t hba_flag;      /* hba generic flags */
 433 #define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 434
 435         struct lpfc_dmabuf slim2p;
 436
 437         MAILBOX_t *mbox;
 438         uint32_t *inb_ha_copy;
 439         uint32_t *inb_counter;
 440         uint32_t inb_last_counter;
 441         uint32_t ha_copy;
 442         struct _PCB *pcb;
 443         struct _IOCB *IOCBs;
 444
 445         struct lpfc_dmabuf hbqslimp;
 446
 447         uint16_t pci_cfg_value;
 448
 449         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 450
 451         uint32_t fc_eventTag;   /* event tag for link attention */
 452
 453         /* These fields used to be binfo */
 454         uint32_t fc_pref_DID;   /* preferred D_ID */
 455         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 456         uint32_t fc_edtov;      /* E_D_TOV timer value */
 457         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 458         uint32_t fc_ratov;      /* R_A_TOV timer value */
 459         uint32_t fc_rttov;      /* R_T_TOV timer value */
 460         uint32_t fc_altov;      /* AL_TOV timer value */
 461         uint32_t fc_crtov;      /* C_R_TOV timer value */
 462         uint32_t fc_citov;      /* C_I_TOV timer value */
 463
 464         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 465         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 466
 467         uint32_t lmt;
 468
 469         uint32_t fc_topology;   /* link topology, from LINK INIT */
 470
 471         struct lpfc_stats fc_stat;
 472
 473         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 474         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 475
 476         uint8_t  wwnn[8];
 477         uint8_t  wwpn[8];
 478         uint32_t RandomData[7];
 479
 480         /* HBA Config Parameters */
 481         uint32_t cfg_ack0;
 482         uint32_t cfg_enable_npiv;
 483         uint32_t cfg_topology;
 484         uint32_t cfg_link_speed;
 485         uint32_t cfg_cr_delay;
 486         uint32_t cfg_cr_count;
 487         uint32_t cfg_multi_ring_support;
 488         uint32_t cfg_multi_ring_rctl;
 489         uint32_t cfg_multi_ring_type;
 490         uint32_t cfg_poll;
 491         uint32_t cfg_poll_tmo;
 492         uint32_t cfg_use_msi;
 493         uint32_t cfg_sg_seg_cnt;
 494         uint32_t cfg_sg_dma_buf_size;
 495         uint64_t cfg_soft_wwnn;
 496         uint64_t cfg_soft_wwpn;
 497         uint32_t cfg_hba_queue_depth;
 498         uint32_t cfg_enable_hba_reset;
 499         uint32_t cfg_enable_hba_heartbeat;
 500
 501         lpfc_vpd_t vpd;         /* vital product data */
 502
 503         struct pci_dev *pcidev;
 504         struct list_head      work_list;
 505         uint32_t              work_ha;      /* Host Attention Bits for WT */
 506         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 507         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 508         uint32_t              work_status[2]; /* Extra status from SLIM */
 509
 510         wait_queue_head_t    work_waitq;
 511         struct task_struct   *worker_thread;
 512         unsigned long data_flags;
 513
 514         uint32_t hbq_in_use;            /* HBQs in use flag */
 515         struct list_head hbqbuf_in_list;  /* in-fly hbq buffer list */
 516         uint32_t hbq_count;             /* Count of configured HBQs */
 517         struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 518
 519         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 520         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 521         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 522                                            PCI BAR0 */
 523         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 524                                             PCI BAR2 */
 525
 526         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 527         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 528         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 529         void __iomem *HSregaddr;        /* virtual address for host status
 530                                            reg */
 531         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 532
 533         struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 534         struct lpfc_pgp   *port_gp;
 535         uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 536         uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 537
 538         int brd_no;                     /* FC board number */
 539
 540         char SerialNumber[32];          /* adapter Serial Number */
 541         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 542         char ModelDesc[256];            /* Model Description */
 543         char ModelName[80];             /* Model Name */
 544         char ProgramType[256];          /* Program Type */
 545         char Port[20];                  /* Port No */
 546         uint8_t vpd_flag;               /* VPD data flag */
 547
 548 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 549 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 550 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 551 #define VPD_PORT            0x8         /* valid vpd port data */
 552 #define VPD_MASK            0xf         /* mask for any vpd data */
 553
 554         uint8_t soft_wwn_enable;
 555
 556         struct timer_list fcp_poll_timer;
 557         struct timer_list eratt_poll;
 558
 559         /*
 560          * stat  counters
 561          */
 562         uint64_t fc4InputRequests;
 563         uint64_t fc4OutputRequests;
 564         uint64_t fc4ControlRequests;
 565
 566         struct lpfc_sysfs_mbox sysfs_mbox;
 567
 568         /* fastpath list. */
 569         spinlock_t scsi_buf_list_lock;
 570         struct list_head lpfc_scsi_buf_list;
 571         uint32_t total_scsi_bufs;
 572         struct list_head lpfc_iocb_list;
 573         uint32_t total_iocbq_bufs;
 574         spinlock_t hbalock;
 575
 576         /* pci_mem_pools */
 577         struct pci_pool *lpfc_scsi_dma_buf_pool;
 578         struct pci_pool *lpfc_mbuf_pool;
 579         struct pci_pool *lpfc_hbq_pool;
 580         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 581
 582         mempool_t *mbox_mem_pool;
 583         mempool_t *nlp_mem_pool;
 584
 585         struct fc_host_statistics link_stats;
 586         enum intr_type_t intr_type;
 587         struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 588
 589         struct list_head port_list;
 590         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 591         uint16_t max_vpi;               /* Maximum virtual nports */
 592 #define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 593         unsigned long *vpi_bmask;       /* vpi allocation table */
 594
 595         /* Data structure used by fabric iocb scheduler */
 596         struct list_head fabric_iocb_list;
 597         atomic_t fabric_iocb_count;
 598         struct timer_list fabric_block_timer;
 599         unsigned long bit_flags;
 600 #define FABRIC_COMANDS_BLOCKED  0
 601         atomic_t num_rsrc_err;
 602         atomic_t num_cmd_success;
 603         unsigned long last_rsrc_error_time;
 604         unsigned long last_ramp_down_time;
 605         unsigned long last_ramp_up_time;
 606 #ifdef CONFIG_LPFC_DEBUG_FS
 607         struct dentry *hba_debugfs_root;
 608         atomic_t debugfs_vport_count;
 609         struct dentry *debug_hbqinfo;
 610         struct dentry *debug_dumpHostSlim;
 611         struct dentry *debug_dumpHBASlim;
 612         struct dentry *debug_slow_ring_trc;
 613         struct lpfc_debugfs_trc *slow_ring_trc;
 614         atomic_t slow_ring_trc_cnt;
 615 #endif
 616
 617         /* Used for deferred freeing of ELS data buffers */
 618         struct list_head elsbuf;
 619         int elsbuf_cnt;
 620         int elsbuf_prev_cnt;
 621
 622         uint8_t temp_sensor_support;
 623         /* Fields used for heart beat. */
 624         unsigned long last_completion_time;
 625         struct timer_list hb_tmofunc;
 626         uint8_t hb_outstanding;
 627         enum hba_temp_state over_temp_state;
 628         /* ndlp reference management */
 629         spinlock_t ndlp_lock;
 630         /*
 631          * Following bit will be set for all buffer tags which are not
 632          * associated with any HBQ.
 633          */
 634 #define QUE_BUFTAG_BIT  (1<<31)
 635         uint32_t buffer_tag_count;
 636         int wait_4_mlo_maint_flg;
 637         wait_queue_head_t wait_4_mlo_m_q;
 638 };
 639
 640 static inline struct Scsi_Host *
 641 lpfc_shost_from_vport(struct lpfc_vport *vport)
 642 {
 643         return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 644 }
 645
 646 static inline void
 647 lpfc_set_loopback_flag(struct lpfc_hba *phba)
 648 {
 649         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 650                 phba->link_flag |= LS_LOOPBACK_MODE;
 651         else
 652                 phba->link_flag &= ~LS_LOOPBACK_MODE;
 653 }
 654
 655 static inline int
 656 lpfc_is_link_up(struct lpfc_hba *phba)
 657 {
 658         return  phba->link_state == LPFC_LINK_UP ||
 659                 phba->link_state == LPFC_CLEAR_LA ||
 660                 phba->link_state == LPFC_HBA_READY;
 661 }
 662
 663 static inline void
 664 lpfc_worker_wake_up(struct lpfc_hba *phba)
 665 {
 666         /* Set the lpfc data pending flag */
 667         set_bit(LPFC_DATA_READY, &phba->data_flags);
 668
 669         /* Wake up worker thread */
 670         wake_up(&phba->work_waitq);
 671         return;
 672 }
 673
 674 static inline void
 675 lpfc_sli_read_hs(struct lpfc_hba *phba)
 676 {
 677         /*
 678          * There was a link/board error. Read the status register to retrieve
 679          * the error event and process it.
 680          */
 681         phba->sli.slistat.err_attn_event++;
 682
 683         /* Save status info */
 684         phba->work_hs = readl(phba->HSregaddr);
 685         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
 686         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
 687
 688         /* Clear chip Host Attention error bit */
 689         writel(HA_ERATT, phba->HAregaddr);
 690         readl(phba->HAregaddr); /* flush */
 691         phba->pport->stopped = 1;
 692
 693         return;
 694 }
 695
 696 #define FC_REG_DUMP_EVENT               0x10    /* Register for Dump events */
 697 #define FC_REG_TEMPERATURE_EVENT        0x20    /* Register for temperature
 698                                                    event */
 699
 700 struct temp_event {
 701         uint32_t event_type;
 702         uint32_t event_code;
 703         uint32_t data;
 704 };
 705 #define LPFC_CRIT_TEMP          0x1
 706 #define LPFC_THRESHOLD_TEMP     0x2
 707 #define LPFC_NORMAL_TEMP        0x3