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         256     /* 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
  37 /*
  38  * Following time intervals are used of adjusting SCSI device
  39  * queue depths when there are driver resource error or Firmware
  40  * resource error.
  41  */
  42 #define QUEUE_RAMP_DOWN_INTERVAL        (1 * HZ)   /* 1 Second */
  43 #define QUEUE_RAMP_UP_INTERVAL          (300 * HZ) /* 5 minutes */
  44
  45 /* Number of exchanges reserved for discovery to complete */
  46 #define LPFC_DISC_IOCB_BUFF_COUNT 20
  47
  48 #define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  49 #define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  50
  51 /* Define macros for 64 bit support */
  52 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  53 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  54 #define getPaddr(high, low)  ((dma_addr_t)( \
  55                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  56 /* Provide maximum configuration definitions. */
  57 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  58 #define FC_MAX_ADPTMSG          64
  59
  60 #define MAX_HBAEVT      32
  61
  62 enum lpfc_polling_flags {
  63         ENABLE_FCP_RING_POLLING = 0x1,
  64         DISABLE_FCP_RING_INT    = 0x2
  65 };
  66
  67 /* Provide DMA memory definitions the driver uses per port instance. */
  68 struct lpfc_dmabuf {
  69         struct list_head list;
  70         void *virt;             /* virtual address ptr */
  71         dma_addr_t phys;        /* mapped address */
  72         uint32_t   buffer_tag;  /* used for tagged queue ring */
  73 };
  74
  75 struct lpfc_dma_pool {
  76         struct lpfc_dmabuf   *elements;
  77         uint32_t    max_count;
  78         uint32_t    current_count;
  79 };
  80
  81 struct hbq_dmabuf {
  82         struct lpfc_dmabuf dbuf;
  83         uint32_t size;
  84         uint32_t tag;
  85 };
  86
  87 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
  88 #define MEM_PRI         0x100
  89
  90
  91 /****************************************************************************/
  92 /*      Device VPD save area                                                */
  93 /****************************************************************************/
  94 typedef struct lpfc_vpd {
  95         uint32_t status;        /* vpd status value */
  96         uint32_t length;        /* number of bytes actually returned */
  97         struct {
  98                 uint32_t rsvd1; /* Revision numbers */
  99                 uint32_t biuRev;
 100                 uint32_t smRev;
 101                 uint32_t smFwRev;
 102                 uint32_t endecRev;
 103                 uint16_t rBit;
 104                 uint8_t fcphHigh;
 105                 uint8_t fcphLow;
 106                 uint8_t feaLevelHigh;
 107                 uint8_t feaLevelLow;
 108                 uint32_t postKernRev;
 109                 uint32_t opFwRev;
 110                 uint8_t opFwName[16];
 111                 uint32_t sli1FwRev;
 112                 uint8_t sli1FwName[16];
 113                 uint32_t sli2FwRev;
 114                 uint8_t sli2FwName[16];
 115         } rev;
 116         struct {
 117 #ifdef __BIG_ENDIAN_BITFIELD
 118                 uint32_t rsvd2  :24;  /* Reserved                             */
 119                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 120                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 121                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 122                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 123                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 124                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 125                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 126                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 127 #else   /*  __LITTLE_ENDIAN */
 128                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 129                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 130                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 131                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 132                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 133                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 134                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 135                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 136                 uint32_t rsvd2  :24;  /* Reserved                             */
 137 #endif
 138         } sli3Feat;
 139 } lpfc_vpd_t;
 140
 141 struct lpfc_scsi_buf;
 142
 143
 144 /*
 145  * lpfc stat counters
 146  */
 147 struct lpfc_stats {
 148         /* Statistics for ELS commands */
 149         uint32_t elsLogiCol;
 150         uint32_t elsRetryExceeded;
 151         uint32_t elsXmitRetry;
 152         uint32_t elsDelayRetry;
 153         uint32_t elsRcvDrop;
 154         uint32_t elsRcvFrame;
 155         uint32_t elsRcvRSCN;
 156         uint32_t elsRcvRNID;
 157         uint32_t elsRcvFARP;
 158         uint32_t elsRcvFARPR;
 159         uint32_t elsRcvFLOGI;
 160         uint32_t elsRcvPLOGI;
 161         uint32_t elsRcvADISC;
 162         uint32_t elsRcvPDISC;
 163         uint32_t elsRcvFAN;
 164         uint32_t elsRcvLOGO;
 165         uint32_t elsRcvPRLO;
 166         uint32_t elsRcvPRLI;
 167         uint32_t elsRcvLIRR;
 168         uint32_t elsRcvRPS;
 169         uint32_t elsRcvRPL;
 170         uint32_t elsXmitFLOGI;
 171         uint32_t elsXmitFDISC;
 172         uint32_t elsXmitPLOGI;
 173         uint32_t elsXmitPRLI;
 174         uint32_t elsXmitADISC;
 175         uint32_t elsXmitLOGO;
 176         uint32_t elsXmitSCR;
 177         uint32_t elsXmitRNID;
 178         uint32_t elsXmitFARP;
 179         uint32_t elsXmitFARPR;
 180         uint32_t elsXmitACC;
 181         uint32_t elsXmitLSRJT;
 182
 183         uint32_t frameRcvBcast;
 184         uint32_t frameRcvMulti;
 185         uint32_t strayXmitCmpl;
 186         uint32_t frameXmitDelay;
 187         uint32_t xriCmdCmpl;
 188         uint32_t xriStatErr;
 189         uint32_t LinkUp;
 190         uint32_t LinkDown;
 191         uint32_t LinkMultiEvent;
 192         uint32_t NoRcvBuf;
 193         uint32_t fcpCmd;
 194         uint32_t fcpCmpl;
 195         uint32_t fcpRspErr;
 196         uint32_t fcpRemoteStop;
 197         uint32_t fcpPortRjt;
 198         uint32_t fcpPortBusy;
 199         uint32_t fcpError;
 200         uint32_t fcpLocalErr;
 201 };
 202
 203 enum sysfs_mbox_state {
 204         SMBOX_IDLE,
 205         SMBOX_WRITING,
 206         SMBOX_READING
 207 };
 208
 209 struct lpfc_sysfs_mbox {
 210         enum sysfs_mbox_state state;
 211         size_t                offset;
 212         struct lpfcMboxq *    mbox;
 213 };
 214
 215 struct lpfc_hba;
 216
 217
 218 enum discovery_state {
 219         LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 220         LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 221         LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 222         LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 223         LPFC_FDISC             =  8,    /* FDISC sent for vport */
 224         LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 225                                          * configured */
 226         LPFC_NS_REG            =  10,   /* Register with NameServer */
 227         LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 228         LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 229                                          * device authentication / discovery */
 230         LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 231         LPFC_VPORT_READY       =  32,
 232 };
 233
 234 enum hba_state {
 235         LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 236         LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 237         LPFC_INIT_START      =   2,   /* Initial state after board reset */
 238         LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 239         LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 240         LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 241         LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 242                                        * CLEAR_LA */
 243         LPFC_HBA_READY       =  32,
 244         LPFC_HBA_ERROR       =  -1
 245 };
 246
 247 struct lpfc_vport {
 248         struct list_head listentry;
 249         struct lpfc_hba *phba;
 250         uint8_t port_type;
 251 #define LPFC_PHYSICAL_PORT 1
 252 #define LPFC_NPIV_PORT  2
 253 #define LPFC_FABRIC_PORT 3
 254         enum discovery_state port_state;
 255
 256         uint16_t vpi;
 257
 258         uint32_t fc_flag;       /* FC flags */
 259 /* Several of these flags are HBA centric and should be moved to
 260  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 261  */
 262 #define FC_PT2PT                0x1      /* pt2pt with no fabric */
 263 #define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 264 #define FC_DISC_TMO             0x4      /* Discovery timer running */
 265 #define FC_PUBLIC_LOOP          0x8      /* Public loop */
 266 #define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 267 #define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 268 #define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 269 #define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 270 #define FC_FABRIC               0x100    /* We are fabric attached */
 271 #define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 272 #define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 273 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 274 #define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 275 #define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 276 #define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 277 #define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 278
 279         uint32_t ct_flags;
 280 #define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 281 #define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 282 #define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 283 #define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 284 #define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 285
 286         struct list_head fc_nodes;
 287
 288         /* Keep counters for the number of entries in each list. */
 289         uint16_t fc_plogi_cnt;
 290         uint16_t fc_adisc_cnt;
 291         uint16_t fc_reglogin_cnt;
 292         uint16_t fc_prli_cnt;
 293         uint16_t fc_unmap_cnt;
 294         uint16_t fc_map_cnt;
 295         uint16_t fc_npr_cnt;
 296         uint16_t fc_unused_cnt;
 297         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 298
 299         uint32_t fc_myDID;      /* fibre channel S_ID */
 300         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 301
 302         int32_t stopped;   /* HBA has not been restarted since last ERATT */
 303         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 304
 305         uint32_t num_disc_nodes;        /*in addition to hba_state */
 306
 307         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 308         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 309         uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 310         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 311         struct lpfc_name fc_nodename;   /* fc nodename */
 312         struct lpfc_name fc_portname;   /* fc portname */
 313
 314         struct lpfc_work_evt disc_timeout_evt;
 315
 316         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 317         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 318         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 319
 320         spinlock_t work_port_lock;
 321         uint32_t work_port_events; /* Timeout to be handled  */
 322 #define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 323 #define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 324 #define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 325
 326 #define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 327 #define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 328 #define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 329 #define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 330 #define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 331
 332         struct timer_list fc_fdmitmo;
 333         struct timer_list els_tmofunc;
 334
 335         int unreg_vpi_cmpl;
 336
 337         uint8_t load_flag;
 338 #define FC_LOADING              0x1     /* HBA in process of loading drvr */
 339 #define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 340         char  *vname;                   /* Application assigned name */
 341
 342         /* Vport Config Parameters */
 343         uint32_t cfg_scan_down;
 344         uint32_t cfg_lun_queue_depth;
 345         uint32_t cfg_nodev_tmo;
 346         uint32_t cfg_devloss_tmo;
 347         uint32_t cfg_restrict_login;
 348         uint32_t cfg_peer_port_login;
 349         uint32_t cfg_fcp_class;
 350         uint32_t cfg_use_adisc;
 351         uint32_t cfg_fdmi_on;
 352         uint32_t cfg_discovery_threads;
 353         uint32_t cfg_log_verbose;
 354         uint32_t cfg_max_luns;
 355         uint32_t cfg_enable_da_id;
 356
 357         uint32_t dev_loss_tmo_changed;
 358
 359         struct fc_vport *fc_vport;
 360
 361 #ifdef CONFIG_LPFC_DEBUG_FS
 362         struct dentry *debug_disc_trc;
 363         struct dentry *debug_nodelist;
 364         struct dentry *vport_debugfs_root;
 365         struct lpfc_debugfs_trc *disc_trc;
 366         atomic_t disc_trc_cnt;
 367 #endif
 368 };
 369
 370 struct hbq_s {
 371         uint16_t entry_count;     /* Current number of HBQ slots */
 372         uint16_t buffer_count;    /* Current number of buffers posted */
 373         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 374         uint32_t hbqPutIdx;       /* HBQ slot to use */
 375         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 376         void    *hbq_virt;        /* Virtual ptr to this hbq */
 377         struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 378                                   /* Callback for HBQ buffer allocation */
 379         struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 380                                   /* Callback for HBQ buffer free */
 381         void               (*hbq_free_buffer) (struct lpfc_hba *,
 382                                                struct hbq_dmabuf *);
 383 };
 384
 385 #define LPFC_MAX_HBQS  4
 386 /* this matches the position in the lpfc_hbq_defs array */
 387 #define LPFC_ELS_HBQ    0
 388 #define LPFC_EXTRA_HBQ  1
 389
 390 enum hba_temp_state {
 391         HBA_NORMAL_TEMP,
 392         HBA_OVER_TEMP
 393 };
 394
 395 enum intr_type_t {
 396         NONE = 0,
 397         INTx,
 398         MSI,
 399         MSIX,
 400 };
 401
 402 struct lpfc_hba {
 403         struct lpfc_sli sli;
 404         uint32_t sli_rev;               /* SLI2 or SLI3 */
 405         uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 406 #define LPFC_SLI3_ENABLED        0x01
 407 #define LPFC_SLI3_HBQ_ENABLED    0x02
 408 #define LPFC_SLI3_NPIV_ENABLED   0x04
 409 #define LPFC_SLI3_VPORT_TEARDOWN 0x08
 410         uint32_t iocb_cmd_size;
 411         uint32_t iocb_rsp_size;
 412
 413         enum hba_state link_state;
 414         uint32_t link_flag;     /* link state flags */
 415 #define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 416                                         /* This flag is set while issuing */
 417                                         /* INIT_LINK mailbox command */
 418 #define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 419 #define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 420
 421         struct lpfc_sli2_slim *slim2p;
 422         struct lpfc_dmabuf hbqslimp;
 423
 424         dma_addr_t slim2p_mapping;
 425
 426         uint16_t pci_cfg_value;
 427
 428         uint8_t work_found;
 429 #define LPFC_MAX_WORKER_ITERATION  4
 430
 431         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 432
 433         uint32_t fc_eventTag;   /* event tag for link attention */
 434
 435         /* These fields used to be binfo */
 436         uint32_t fc_pref_DID;   /* preferred D_ID */
 437         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 438         uint32_t fc_edtov;      /* E_D_TOV timer value */
 439         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 440         uint32_t fc_ratov;      /* R_A_TOV timer value */
 441         uint32_t fc_rttov;      /* R_T_TOV timer value */
 442         uint32_t fc_altov;      /* AL_TOV timer value */
 443         uint32_t fc_crtov;      /* C_R_TOV timer value */
 444         uint32_t fc_citov;      /* C_I_TOV timer value */
 445
 446         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 447         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 448
 449         uint32_t lmt;
 450
 451         uint32_t fc_topology;   /* link topology, from LINK INIT */
 452
 453         struct lpfc_stats fc_stat;
 454
 455         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 456         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 457
 458         uint8_t  wwnn[8];
 459         uint8_t  wwpn[8];
 460         uint32_t RandomData[7];
 461
 462         /* HBA Config Parameters */
 463         uint32_t cfg_ack0;
 464         uint32_t cfg_enable_npiv;
 465         uint32_t cfg_topology;
 466         uint32_t cfg_link_speed;
 467         uint32_t cfg_cr_delay;
 468         uint32_t cfg_cr_count;
 469         uint32_t cfg_multi_ring_support;
 470         uint32_t cfg_multi_ring_rctl;
 471         uint32_t cfg_multi_ring_type;
 472         uint32_t cfg_poll;
 473         uint32_t cfg_poll_tmo;
 474         uint32_t cfg_use_msi;
 475         uint32_t cfg_sg_seg_cnt;
 476         uint32_t cfg_sg_dma_buf_size;
 477         uint64_t cfg_soft_wwnn;
 478         uint64_t cfg_soft_wwpn;
 479         uint32_t cfg_hba_queue_depth;
 480         uint32_t cfg_enable_hba_reset;
 481         uint32_t cfg_enable_hba_heartbeat;
 482
 483         lpfc_vpd_t vpd;         /* vital product data */
 484
 485         struct pci_dev *pcidev;
 486         struct list_head      work_list;
 487         uint32_t              work_ha;      /* Host Attention Bits for WT */
 488         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 489         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 490         uint32_t              work_status[2]; /* Extra status from SLIM */
 491
 492         wait_queue_head_t    *work_wait;
 493         struct task_struct   *worker_thread;
 494
 495         uint32_t hbq_in_use;            /* HBQs in use flag */
 496         struct list_head hbqbuf_in_list;  /* in-fly hbq buffer list */
 497         uint32_t hbq_count;             /* Count of configured HBQs */
 498         struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 499
 500         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 501         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 502         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 503                                            PCI BAR0 */
 504         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 505                                             PCI BAR2 */
 506
 507         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 508         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 509         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 510         void __iomem *HSregaddr;        /* virtual address for host status
 511                                            reg */
 512         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 513
 514         struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 515         uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 516         uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 517
 518         int brd_no;                     /* FC board number */
 519
 520         char SerialNumber[32];          /* adapter Serial Number */
 521         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 522         char ModelDesc[256];            /* Model Description */
 523         char ModelName[80];             /* Model Name */
 524         char ProgramType[256];          /* Program Type */
 525         char Port[20];                  /* Port No */
 526         uint8_t vpd_flag;               /* VPD data flag */
 527
 528 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 529 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 530 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 531 #define VPD_PORT            0x8         /* valid vpd port data */
 532 #define VPD_MASK            0xf         /* mask for any vpd data */
 533
 534         uint8_t soft_wwn_enable;
 535
 536         struct timer_list fcp_poll_timer;
 537
 538         /*
 539          * stat  counters
 540          */
 541         uint64_t fc4InputRequests;
 542         uint64_t fc4OutputRequests;
 543         uint64_t fc4ControlRequests;
 544
 545         struct lpfc_sysfs_mbox sysfs_mbox;
 546
 547         /* fastpath list. */
 548         spinlock_t scsi_buf_list_lock;
 549         struct list_head lpfc_scsi_buf_list;
 550         uint32_t total_scsi_bufs;
 551         struct list_head lpfc_iocb_list;
 552         uint32_t total_iocbq_bufs;
 553         spinlock_t hbalock;
 554
 555         /* pci_mem_pools */
 556         struct pci_pool *lpfc_scsi_dma_buf_pool;
 557         struct pci_pool *lpfc_mbuf_pool;
 558         struct pci_pool *lpfc_hbq_pool;
 559         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 560
 561         mempool_t *mbox_mem_pool;
 562         mempool_t *nlp_mem_pool;
 563
 564         struct fc_host_statistics link_stats;
 565         enum intr_type_t intr_type;
 566         struct msix_entry msix_entries[1];
 567
 568         struct list_head port_list;
 569         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 570         uint16_t max_vpi;               /* Maximum virtual nports */
 571 #define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 572         unsigned long *vpi_bmask;       /* vpi allocation table */
 573
 574         /* Data structure used by fabric iocb scheduler */
 575         struct list_head fabric_iocb_list;
 576         atomic_t fabric_iocb_count;
 577         struct timer_list fabric_block_timer;
 578         unsigned long bit_flags;
 579 #define FABRIC_COMANDS_BLOCKED  0
 580         atomic_t num_rsrc_err;
 581         atomic_t num_cmd_success;
 582         unsigned long last_rsrc_error_time;
 583         unsigned long last_ramp_down_time;
 584         unsigned long last_ramp_up_time;
 585 #ifdef CONFIG_LPFC_DEBUG_FS
 586         struct dentry *hba_debugfs_root;
 587         atomic_t debugfs_vport_count;
 588         struct dentry *debug_hbqinfo;
 589         struct dentry *debug_dumpHostSlim;
 590         struct dentry *debug_dumpHBASlim;
 591         struct dentry *debug_slow_ring_trc;
 592         struct lpfc_debugfs_trc *slow_ring_trc;
 593         atomic_t slow_ring_trc_cnt;
 594 #endif
 595
 596         /* Used for deferred freeing of ELS data buffers */
 597         struct list_head elsbuf;
 598         int elsbuf_cnt;
 599         int elsbuf_prev_cnt;
 600
 601         uint8_t temp_sensor_support;
 602         /* Fields used for heart beat. */
 603         unsigned long last_completion_time;
 604         struct timer_list hb_tmofunc;
 605         uint8_t hb_outstanding;
 606         /* ndlp reference management */
 607         spinlock_t ndlp_lock;
 608         /*
 609          * Following bit will be set for all buffer tags which are not
 610          * associated with any HBQ.
 611          */
 612 #define QUE_BUFTAG_BIT  (1<<31)
 613         uint32_t buffer_tag_count;
 614         enum hba_temp_state over_temp_state;
 615 };
 616
 617 static inline struct Scsi_Host *
 618 lpfc_shost_from_vport(struct lpfc_vport *vport)
 619 {
 620         return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 621 }
 622
 623 static inline void
 624 lpfc_set_loopback_flag(struct lpfc_hba *phba)
 625 {
 626         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 627                 phba->link_flag |= LS_LOOPBACK_MODE;
 628         else
 629                 phba->link_flag &= ~LS_LOOPBACK_MODE;
 630 }
 631
 632 static inline int
 633 lpfc_is_link_up(struct lpfc_hba *phba)
 634 {
 635         return  phba->link_state == LPFC_LINK_UP ||
 636                 phba->link_state == LPFC_CLEAR_LA ||
 637                 phba->link_state == LPFC_HBA_READY;
 638 }
 639
 640 #define FC_REG_DUMP_EVENT               0x10    /* Register for Dump events */
 641 #define FC_REG_TEMPERATURE_EVENT        0x20    /* Register for temperature
 642                                                    event */
 643
 644 struct temp_event {
 645         uint32_t event_type;
 646         uint32_t event_code;
 647         uint32_t data;
 648 };
 649 #define LPFC_CRIT_TEMP          0x1
 650 #define LPFC_THRESHOLD_TEMP     0x2
 651 #define LPFC_NORMAL_TEMP        0x3