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) 2004-2009 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_PCI_DEV_LP         0x1
  27 #define LPFC_PCI_DEV_OC         0x2
  28
  29 #define LPFC_SLI_REV2           2
  30 #define LPFC_SLI_REV3           3
  31 #define LPFC_SLI_REV4           4
  32
  33 #define LPFC_MAX_TARGET         4096    /* max number of targets supported */
  34 #define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els
  35                                            requests */
  36 #define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
  37                                            the NameServer  before giving up. */
  38 #define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
  39 #define LPFC_DEFAULT_SG_SEG_CNT 64      /* sg element count per scsi cmnd */
  40 #define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
  41 #define LPFC_MAX_SG_SEG_CNT     4096    /* sg element count per scsi cmnd */
  42 #define LPFC_MAX_PROT_SG_SEG_CNT 4096   /* prot sg element count per scsi cmd*/
  43 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  44 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  45 #define LPFC_VNAME_LEN          100     /* vport symbolic name length */
  46 #define LPFC_TGTQ_INTERVAL      40000   /* Min amount of time between tgt
  47                                            queue depth change in millisecs */
  48 #define LPFC_TGTQ_RAMPUP_PCENT  5       /* Target queue rampup in percentage */
  49 #define LPFC_MIN_TGT_QDEPTH     100
  50 #define LPFC_MAX_TGT_QDEPTH     0xFFFF
  51
  52 #define  LPFC_MAX_BUCKET_COUNT 20       /* Maximum no. of buckets for stat data
  53                                            collection. */
  54 /*
  55  * Following time intervals are used of adjusting SCSI device
  56  * queue depths when there are driver resource error or Firmware
  57  * resource error.
  58  */
  59 #define QUEUE_RAMP_DOWN_INTERVAL        (1 * HZ)   /* 1 Second */
  60 #define QUEUE_RAMP_UP_INTERVAL          (300 * HZ) /* 5 minutes */
  61
  62 /* Number of exchanges reserved for discovery to complete */
  63 #define LPFC_DISC_IOCB_BUFF_COUNT 20
  64
  65 #define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  66 #define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  67
  68 /* Error Attention event polling interval */
  69 #define LPFC_ERATT_POLL_INTERVAL        5 /* EATT poll interval in seconds */
  70
  71 /* Define macros for 64 bit support */
  72 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  73 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  74 #define getPaddr(high, low)  ((dma_addr_t)( \
  75                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  76 /* Provide maximum configuration definitions. */
  77 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  78 #define FC_MAX_ADPTMSG          64
  79
  80 #define MAX_HBAEVT      32
  81
  82 /* Number of MSI-X vectors the driver uses */
  83 #define LPFC_MSIX_VECTORS       2
  84
  85 /* lpfc wait event data ready flag */
  86 #define LPFC_DATA_READY         (1<<0)
  87
  88 enum lpfc_polling_flags {
  89         ENABLE_FCP_RING_POLLING = 0x1,
  90         DISABLE_FCP_RING_INT    = 0x2
  91 };
  92
  93 /* Provide DMA memory definitions the driver uses per port instance. */
  94 struct lpfc_dmabuf {
  95         struct list_head list;
  96         void *virt;             /* virtual address ptr */
  97         dma_addr_t phys;        /* mapped address */
  98         uint32_t   buffer_tag;  /* used for tagged queue ring */
  99 };
 100
 101 struct lpfc_dma_pool {
 102         struct lpfc_dmabuf   *elements;
 103         uint32_t    max_count;
 104         uint32_t    current_count;
 105 };
 106
 107 struct hbq_dmabuf {
 108         struct lpfc_dmabuf hbuf;
 109         struct lpfc_dmabuf dbuf;
 110         uint32_t size;
 111         uint32_t tag;
 112         struct lpfc_rcqe rcqe;
 113 };
 114
 115 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
 116 #define MEM_PRI         0x100
 117
 118
 119 /****************************************************************************/
 120 /*      Device VPD save area                                                */
 121 /****************************************************************************/
 122 typedef struct lpfc_vpd {
 123         uint32_t status;        /* vpd status value */
 124         uint32_t length;        /* number of bytes actually returned */
 125         struct {
 126                 uint32_t rsvd1; /* Revision numbers */
 127                 uint32_t biuRev;
 128                 uint32_t smRev;
 129                 uint32_t smFwRev;
 130                 uint32_t endecRev;
 131                 uint16_t rBit;
 132                 uint8_t fcphHigh;
 133                 uint8_t fcphLow;
 134                 uint8_t feaLevelHigh;
 135                 uint8_t feaLevelLow;
 136                 uint32_t postKernRev;
 137                 uint32_t opFwRev;
 138                 uint8_t opFwName[16];
 139                 uint32_t sli1FwRev;
 140                 uint8_t sli1FwName[16];
 141                 uint32_t sli2FwRev;
 142                 uint8_t sli2FwName[16];
 143         } rev;
 144         struct {
 145 #ifdef __BIG_ENDIAN_BITFIELD
 146                 uint32_t rsvd3  :19;  /* Reserved                             */
 147                 uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 148                 uint32_t rsvd2  : 3;  /* Reserved                             */
 149                 uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 150                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 151                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 152                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 153                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 154                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 155                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 156                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 157                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 158 #else   /*  __LITTLE_ENDIAN */
 159                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 160                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 161                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 162                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 163                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 164                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 165                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 166                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 167                 uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 168                 uint32_t rsvd2  : 3;  /* Reserved                             */
 169                 uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 170                 uint32_t rsvd3  :19;  /* Reserved                             */
 171 #endif
 172         } sli3Feat;
 173 } lpfc_vpd_t;
 174
 175 struct lpfc_scsi_buf;
 176
 177
 178 /*
 179  * lpfc stat counters
 180  */
 181 struct lpfc_stats {
 182         /* Statistics for ELS commands */
 183         uint32_t elsLogiCol;
 184         uint32_t elsRetryExceeded;
 185         uint32_t elsXmitRetry;
 186         uint32_t elsDelayRetry;
 187         uint32_t elsRcvDrop;
 188         uint32_t elsRcvFrame;
 189         uint32_t elsRcvRSCN;
 190         uint32_t elsRcvRNID;
 191         uint32_t elsRcvFARP;
 192         uint32_t elsRcvFARPR;
 193         uint32_t elsRcvFLOGI;
 194         uint32_t elsRcvPLOGI;
 195         uint32_t elsRcvADISC;
 196         uint32_t elsRcvPDISC;
 197         uint32_t elsRcvFAN;
 198         uint32_t elsRcvLOGO;
 199         uint32_t elsRcvPRLO;
 200         uint32_t elsRcvPRLI;
 201         uint32_t elsRcvLIRR;
 202         uint32_t elsRcvRPS;
 203         uint32_t elsRcvRPL;
 204         uint32_t elsXmitFLOGI;
 205         uint32_t elsXmitFDISC;
 206         uint32_t elsXmitPLOGI;
 207         uint32_t elsXmitPRLI;
 208         uint32_t elsXmitADISC;
 209         uint32_t elsXmitLOGO;
 210         uint32_t elsXmitSCR;
 211         uint32_t elsXmitRNID;
 212         uint32_t elsXmitFARP;
 213         uint32_t elsXmitFARPR;
 214         uint32_t elsXmitACC;
 215         uint32_t elsXmitLSRJT;
 216
 217         uint32_t frameRcvBcast;
 218         uint32_t frameRcvMulti;
 219         uint32_t strayXmitCmpl;
 220         uint32_t frameXmitDelay;
 221         uint32_t xriCmdCmpl;
 222         uint32_t xriStatErr;
 223         uint32_t LinkUp;
 224         uint32_t LinkDown;
 225         uint32_t LinkMultiEvent;
 226         uint32_t NoRcvBuf;
 227         uint32_t fcpCmd;
 228         uint32_t fcpCmpl;
 229         uint32_t fcpRspErr;
 230         uint32_t fcpRemoteStop;
 231         uint32_t fcpPortRjt;
 232         uint32_t fcpPortBusy;
 233         uint32_t fcpError;
 234         uint32_t fcpLocalErr;
 235 };
 236
 237 enum sysfs_mbox_state {
 238         SMBOX_IDLE,
 239         SMBOX_WRITING,
 240         SMBOX_READING
 241 };
 242
 243 struct lpfc_sysfs_mbox {
 244         enum sysfs_mbox_state state;
 245         size_t                offset;
 246         struct lpfcMboxq *    mbox;
 247 };
 248
 249 struct lpfc_hba;
 250
 251
 252 enum discovery_state {
 253         LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 254         LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 255         LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 256         LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 257         LPFC_FDISC             =  8,    /* FDISC sent for vport */
 258         LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 259                                          * configured */
 260         LPFC_NS_REG            =  10,   /* Register with NameServer */
 261         LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 262         LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 263                                          * device authentication / discovery */
 264         LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 265         LPFC_VPORT_READY       =  32,
 266 };
 267
 268 enum hba_state {
 269         LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 270         LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 271         LPFC_INIT_START      =   2,   /* Initial state after board reset */
 272         LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 273         LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 274         LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 275         LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 276                                        * CLEAR_LA */
 277         LPFC_HBA_READY       =  32,
 278         LPFC_HBA_ERROR       =  -1
 279 };
 280
 281 struct lpfc_vport {
 282         struct lpfc_hba *phba;
 283         struct list_head listentry;
 284         uint8_t port_type;
 285 #define LPFC_PHYSICAL_PORT 1
 286 #define LPFC_NPIV_PORT  2
 287 #define LPFC_FABRIC_PORT 3
 288         enum discovery_state port_state;
 289
 290         uint16_t vpi;
 291         uint16_t vfi;
 292         uint8_t vfi_state;
 293 #define LPFC_VFI_REGISTERED     0x1
 294
 295         uint32_t fc_flag;       /* FC flags */
 296 /* Several of these flags are HBA centric and should be moved to
 297  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 298  */
 299 #define FC_PT2PT                0x1      /* pt2pt with no fabric */
 300 #define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 301 #define FC_DISC_TMO             0x4      /* Discovery timer running */
 302 #define FC_PUBLIC_LOOP          0x8      /* Public loop */
 303 #define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 304 #define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 305 #define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 306 #define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 307 #define FC_FABRIC               0x100    /* We are fabric attached */
 308 #define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 309 #define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 310 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 311 #define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 312 #define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 313 #define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 314 #define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 315
 316         uint32_t ct_flags;
 317 #define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 318 #define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 319 #define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 320 #define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 321 #define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 322
 323         struct list_head fc_nodes;
 324
 325         /* Keep counters for the number of entries in each list. */
 326         uint16_t fc_plogi_cnt;
 327         uint16_t fc_adisc_cnt;
 328         uint16_t fc_reglogin_cnt;
 329         uint16_t fc_prli_cnt;
 330         uint16_t fc_unmap_cnt;
 331         uint16_t fc_map_cnt;
 332         uint16_t fc_npr_cnt;
 333         uint16_t fc_unused_cnt;
 334         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 335
 336         uint32_t fc_myDID;      /* fibre channel S_ID */
 337         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 338
 339         int32_t stopped;   /* HBA has not been restarted since last ERATT */
 340         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 341
 342         uint32_t num_disc_nodes;        /*in addition to hba_state */
 343
 344         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 345         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 346         uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 347         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 348         struct lpfc_name fc_nodename;   /* fc nodename */
 349         struct lpfc_name fc_portname;   /* fc portname */
 350
 351         struct lpfc_work_evt disc_timeout_evt;
 352
 353         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 354         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 355         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 356
 357         spinlock_t work_port_lock;
 358         uint32_t work_port_events; /* Timeout to be handled  */
 359 #define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 360 #define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 361 #define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 362
 363 #define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 364 #define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 365 #define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 366 #define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 367 #define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 368
 369         struct timer_list fc_fdmitmo;
 370         struct timer_list els_tmofunc;
 371
 372         int unreg_vpi_cmpl;
 373
 374         uint8_t load_flag;
 375 #define FC_LOADING              0x1     /* HBA in process of loading drvr */
 376 #define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 377         /* Vport Config Parameters */
 378         uint32_t cfg_scan_down;
 379         uint32_t cfg_lun_queue_depth;
 380         uint32_t cfg_nodev_tmo;
 381         uint32_t cfg_devloss_tmo;
 382         uint32_t cfg_restrict_login;
 383         uint32_t cfg_peer_port_login;
 384         uint32_t cfg_fcp_class;
 385         uint32_t cfg_use_adisc;
 386         uint32_t cfg_fdmi_on;
 387         uint32_t cfg_discovery_threads;
 388         uint32_t cfg_log_verbose;
 389         uint32_t cfg_max_luns;
 390         uint32_t cfg_enable_da_id;
 391         uint32_t cfg_max_scsicmpl_time;
 392
 393         uint32_t dev_loss_tmo_changed;
 394
 395         struct fc_vport *fc_vport;
 396
 397 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 398         struct dentry *debug_disc_trc;
 399         struct dentry *debug_nodelist;
 400         struct dentry *vport_debugfs_root;
 401         struct lpfc_debugfs_trc *disc_trc;
 402         atomic_t disc_trc_cnt;
 403 #endif
 404         uint8_t stat_data_enabled;
 405         uint8_t stat_data_blocked;
 406         struct list_head rcv_buffer_list;
 407         uint32_t vport_flag;
 408 #define STATIC_VPORT    1
 409 };
 410
 411 struct hbq_s {
 412         uint16_t entry_count;     /* Current number of HBQ slots */
 413         uint16_t buffer_count;    /* Current number of buffers posted */
 414         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 415         uint32_t hbqPutIdx;       /* HBQ slot to use */
 416         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 417         void    *hbq_virt;        /* Virtual ptr to this hbq */
 418         struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 419                                   /* Callback for HBQ buffer allocation */
 420         struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 421                                   /* Callback for HBQ buffer free */
 422         void               (*hbq_free_buffer) (struct lpfc_hba *,
 423                                                struct hbq_dmabuf *);
 424 };
 425
 426 #define LPFC_MAX_HBQS  4
 427 /* this matches the position in the lpfc_hbq_defs array */
 428 #define LPFC_ELS_HBQ    0
 429 #define LPFC_EXTRA_HBQ  1
 430
 431 enum hba_temp_state {
 432         HBA_NORMAL_TEMP,
 433         HBA_OVER_TEMP
 434 };
 435
 436 enum intr_type_t {
 437         NONE = 0,
 438         INTx,
 439         MSI,
 440         MSIX,
 441 };
 442
 443 struct lpfc_hba {
 444         /* SCSI interface function jump table entries */
 445         int (*lpfc_new_scsi_buf)
 446                 (struct lpfc_vport *, int);
 447         struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
 448                 (struct lpfc_hba *);
 449         int (*lpfc_scsi_prep_dma_buf)
 450                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 451         void (*lpfc_scsi_unprep_dma_buf)
 452                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 453         void (*lpfc_release_scsi_buf)
 454                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 455         void (*lpfc_rampdown_queue_depth)
 456                 (struct lpfc_hba *);
 457         void (*lpfc_scsi_prep_cmnd)
 458                 (struct lpfc_vport *, struct lpfc_scsi_buf *,
 459                  struct lpfc_nodelist *);
 460         /* IOCB interface function jump table entries */
 461         int (*__lpfc_sli_issue_iocb)
 462                 (struct lpfc_hba *, uint32_t,
 463                  struct lpfc_iocbq *, uint32_t);
 464         void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
 465                          struct lpfc_iocbq *);
 466         int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
 467
 468
 469         IOCB_t * (*lpfc_get_iocb_from_iocbq)
 470                 (struct lpfc_iocbq *);
 471         void (*lpfc_scsi_cmd_iocb_cmpl)
 472                 (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
 473
 474         /* MBOX interface function jump table entries */
 475         int (*lpfc_sli_issue_mbox)
 476                 (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
 477         /* Slow-path IOCB process function jump table entries */
 478         void (*lpfc_sli_handle_slow_ring_event)
 479                 (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 480                  uint32_t mask);
 481         /* INIT device interface function jump table entries */
 482         int (*lpfc_sli_hbq_to_firmware)
 483                 (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
 484         int (*lpfc_sli_brdrestart)
 485                 (struct lpfc_hba *);
 486         int (*lpfc_sli_brdready)
 487                 (struct lpfc_hba *, uint32_t);
 488         void (*lpfc_handle_eratt)
 489                 (struct lpfc_hba *);
 490         void (*lpfc_stop_port)
 491                 (struct lpfc_hba *);
 492
 493
 494         /* SLI4 specific HBA data structure */
 495         struct lpfc_sli4_hba sli4_hba;
 496
 497         struct lpfc_sli sli;
 498         uint8_t pci_dev_grp;    /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
 499         uint32_t sli_rev;               /* SLI2, SLI3, or SLI4 */
 500         uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 501 #define LPFC_SLI3_HBQ_ENABLED           0x01
 502 #define LPFC_SLI3_NPIV_ENABLED          0x02
 503 #define LPFC_SLI3_VPORT_TEARDOWN        0x04
 504 #define LPFC_SLI3_CRP_ENABLED           0x08
 505 #define LPFC_SLI3_INB_ENABLED           0x10
 506 #define LPFC_SLI3_BG_ENABLED            0x20
 507 #define LPFC_SLI3_DSS_ENABLED           0x40
 508         uint32_t iocb_cmd_size;
 509         uint32_t iocb_rsp_size;
 510
 511         enum hba_state link_state;
 512         uint32_t link_flag;     /* link state flags */
 513 #define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 514                                         /* This flag is set while issuing */
 515                                         /* INIT_LINK mailbox command */
 516 #define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 517 #define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 518
 519         uint32_t hba_flag;      /* hba generic flags */
 520 #define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 521 #define DEFER_ERATT             0x2 /* Deferred error attention in progress */
 522 #define HBA_FCOE_SUPPORT        0x4 /* HBA function supports FCOE */
 523 #define HBA_RECEIVE_BUFFER      0x8 /* Rcv buffer posted to worker thread */
 524 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
 525 #define FCP_XRI_ABORT_EVENT     0x20
 526 #define ELS_XRI_ABORT_EVENT     0x40
 527 #define ASYNC_EVENT             0x80
 528         struct lpfc_dmabuf slim2p;
 529
 530         MAILBOX_t *mbox;
 531         uint32_t *inb_ha_copy;
 532         uint32_t *inb_counter;
 533         uint32_t inb_last_counter;
 534         uint32_t ha_copy;
 535         struct _PCB *pcb;
 536         struct _IOCB *IOCBs;
 537
 538         struct lpfc_dmabuf hbqslimp;
 539
 540         uint16_t pci_cfg_value;
 541
 542         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 543
 544         uint32_t fc_eventTag;   /* event tag for link attention */
 545
 546         /* These fields used to be binfo */
 547         uint32_t fc_pref_DID;   /* preferred D_ID */
 548         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 549         uint32_t fc_edtov;      /* E_D_TOV timer value */
 550         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 551         uint32_t fc_ratov;      /* R_A_TOV timer value */
 552         uint32_t fc_rttov;      /* R_T_TOV timer value */
 553         uint32_t fc_altov;      /* AL_TOV timer value */
 554         uint32_t fc_crtov;      /* C_R_TOV timer value */
 555         uint32_t fc_citov;      /* C_I_TOV timer value */
 556
 557         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 558         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 559
 560         uint32_t lmt;
 561
 562         uint32_t fc_topology;   /* link topology, from LINK INIT */
 563
 564         struct lpfc_stats fc_stat;
 565
 566         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 567         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 568
 569         uint8_t  wwnn[8];
 570         uint8_t  wwpn[8];
 571         uint32_t RandomData[7];
 572
 573         /* HBA Config Parameters */
 574         uint32_t cfg_ack0;
 575         uint32_t cfg_enable_npiv;
 576         uint32_t cfg_topology;
 577         uint32_t cfg_link_speed;
 578         uint32_t cfg_cr_delay;
 579         uint32_t cfg_cr_count;
 580         uint32_t cfg_multi_ring_support;
 581         uint32_t cfg_multi_ring_rctl;
 582         uint32_t cfg_multi_ring_type;
 583         uint32_t cfg_poll;
 584         uint32_t cfg_poll_tmo;
 585         uint32_t cfg_use_msi;
 586         uint32_t cfg_fcp_imax;
 587         uint32_t cfg_fcp_wq_count;
 588         uint32_t cfg_fcp_eq_count;
 589         uint32_t cfg_sg_seg_cnt;
 590         uint32_t cfg_prot_sg_seg_cnt;
 591         uint32_t cfg_sg_dma_buf_size;
 592         uint64_t cfg_soft_wwnn;
 593         uint64_t cfg_soft_wwpn;
 594         uint32_t cfg_hba_queue_depth;
 595         uint32_t cfg_enable_hba_reset;
 596         uint32_t cfg_enable_hba_heartbeat;
 597         uint32_t cfg_enable_bg;
 598         uint32_t cfg_enable_fip;
 599         uint32_t cfg_log_verbose;
 600
 601         lpfc_vpd_t vpd;         /* vital product data */
 602
 603         struct pci_dev *pcidev;
 604         struct list_head      work_list;
 605         uint32_t              work_ha;      /* Host Attention Bits for WT */
 606         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 607         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 608         uint32_t              work_status[2]; /* Extra status from SLIM */
 609
 610         wait_queue_head_t    work_waitq;
 611         struct task_struct   *worker_thread;
 612         unsigned long data_flags;
 613
 614         uint32_t hbq_in_use;            /* HBQs in use flag */
 615         struct list_head rb_pend_list;  /* Received buffers to be processed */
 616         uint32_t hbq_count;             /* Count of configured HBQs */
 617         struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 618
 619         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 620         unsigned long pci_bar1_map;     /* Physical address for PCI BAR1 */
 621         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 622         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 623                                            PCI BAR0 */
 624         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 625                                             PCI BAR2 */
 626
 627         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 628         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 629         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 630         void __iomem *HSregaddr;        /* virtual address for host status
 631                                            reg */
 632         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 633
 634         struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 635         struct lpfc_pgp   *port_gp;
 636         uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 637         uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 638
 639         int brd_no;                     /* FC board number */
 640
 641         char SerialNumber[32];          /* adapter Serial Number */
 642         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 643         char ModelDesc[256];            /* Model Description */
 644         char ModelName[80];             /* Model Name */
 645         char ProgramType[256];          /* Program Type */
 646         char Port[20];                  /* Port No */
 647         uint8_t vpd_flag;               /* VPD data flag */
 648
 649 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 650 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 651 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 652 #define VPD_PORT            0x8         /* valid vpd port data */
 653 #define VPD_MASK            0xf         /* mask for any vpd data */
 654
 655         uint8_t soft_wwn_enable;
 656
 657         struct timer_list fcp_poll_timer;
 658         struct timer_list eratt_poll;
 659
 660         /*
 661          * stat  counters
 662          */
 663         uint64_t fc4InputRequests;
 664         uint64_t fc4OutputRequests;
 665         uint64_t fc4ControlRequests;
 666         uint64_t bg_guard_err_cnt;
 667         uint64_t bg_apptag_err_cnt;
 668         uint64_t bg_reftag_err_cnt;
 669
 670         struct lpfc_sysfs_mbox sysfs_mbox;
 671
 672         /* fastpath list. */
 673         spinlock_t scsi_buf_list_lock;
 674         struct list_head lpfc_scsi_buf_list;
 675         uint32_t total_scsi_bufs;
 676         struct list_head lpfc_iocb_list;
 677         uint32_t total_iocbq_bufs;
 678         spinlock_t hbalock;
 679
 680         /* pci_mem_pools */
 681         struct pci_pool *lpfc_scsi_dma_buf_pool;
 682         struct pci_pool *lpfc_mbuf_pool;
 683         struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
 684         struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
 685         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 686
 687         mempool_t *mbox_mem_pool;
 688         mempool_t *nlp_mem_pool;
 689
 690         struct fc_host_statistics link_stats;
 691         enum intr_type_t intr_type;
 692         uint32_t intr_mode;
 693 #define LPFC_INTR_ERROR 0xFFFFFFFF
 694         struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 695
 696         struct list_head port_list;
 697         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 698         uint16_t max_vpi;               /* Maximum virtual nports */
 699 #define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 700         uint16_t max_vports;            /*
 701                                          * For IOV HBAs max_vpi can change
 702                                          * after a reset. max_vports is max
 703                                          * number of vports present. This can
 704                                          * be greater than max_vpi.
 705                                          */
 706         uint16_t vpi_base;
 707         uint16_t vfi_base;
 708         unsigned long *vpi_bmask;       /* vpi allocation table */
 709
 710         /* Data structure used by fabric iocb scheduler */
 711         struct list_head fabric_iocb_list;
 712         atomic_t fabric_iocb_count;
 713         struct timer_list fabric_block_timer;
 714         unsigned long bit_flags;
 715 #define FABRIC_COMANDS_BLOCKED  0
 716         atomic_t num_rsrc_err;
 717         atomic_t num_cmd_success;
 718         unsigned long last_rsrc_error_time;
 719         unsigned long last_ramp_down_time;
 720         unsigned long last_ramp_up_time;
 721 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 722         struct dentry *hba_debugfs_root;
 723         atomic_t debugfs_vport_count;
 724         struct dentry *debug_hbqinfo;
 725         struct dentry *debug_dumpHostSlim;
 726         struct dentry *debug_dumpHBASlim;
 727         struct dentry *debug_dumpData;   /* BlockGuard BPL*/
 728         struct dentry *debug_dumpDif;    /* BlockGuard BPL*/
 729         struct dentry *debug_slow_ring_trc;
 730         struct lpfc_debugfs_trc *slow_ring_trc;
 731         atomic_t slow_ring_trc_cnt;
 732 #endif
 733
 734         /* Used for deferred freeing of ELS data buffers */
 735         struct list_head elsbuf;
 736         int elsbuf_cnt;
 737         int elsbuf_prev_cnt;
 738
 739         uint8_t temp_sensor_support;
 740         /* Fields used for heart beat. */
 741         unsigned long last_completion_time;
 742         struct timer_list hb_tmofunc;
 743         uint8_t hb_outstanding;
 744         enum hba_temp_state over_temp_state;
 745         /* ndlp reference management */
 746         spinlock_t ndlp_lock;
 747         /*
 748          * Following bit will be set for all buffer tags which are not
 749          * associated with any HBQ.
 750          */
 751 #define QUE_BUFTAG_BIT  (1<<31)
 752         uint32_t buffer_tag_count;
 753         int wait_4_mlo_maint_flg;
 754         wait_queue_head_t wait_4_mlo_m_q;
 755         /* data structure used for latency data collection */
 756 #define LPFC_NO_BUCKET     0
 757 #define LPFC_LINEAR_BUCKET 1
 758 #define LPFC_POWER2_BUCKET 2
 759         uint8_t  bucket_type;
 760         uint32_t bucket_base;
 761         uint32_t bucket_step;
 762
 763 /* Maximum number of events that can be outstanding at any time*/
 764 #define LPFC_MAX_EVT_COUNT 512
 765         atomic_t fast_event_count;
 766         struct lpfc_fcf fcf;
 767         uint8_t fc_map[3];
 768         uint8_t valid_vlan;
 769         uint16_t vlan_id;
 770         struct list_head fcf_conn_rec_list;
 771 };
 772
 773 static inline struct Scsi_Host *
 774 lpfc_shost_from_vport(struct lpfc_vport *vport)
 775 {
 776         return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 777 }
 778
 779 static inline void
 780 lpfc_set_loopback_flag(struct lpfc_hba *phba)
 781 {
 782         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 783                 phba->link_flag |= LS_LOOPBACK_MODE;
 784         else
 785                 phba->link_flag &= ~LS_LOOPBACK_MODE;
 786 }
 787
 788 static inline int
 789 lpfc_is_link_up(struct lpfc_hba *phba)
 790 {
 791         return  phba->link_state == LPFC_LINK_UP ||
 792                 phba->link_state == LPFC_CLEAR_LA ||
 793                 phba->link_state == LPFC_HBA_READY;
 794 }
 795
 796 static inline void
 797 lpfc_worker_wake_up(struct lpfc_hba *phba)
 798 {
 799         /* Set the lpfc data pending flag */
 800         set_bit(LPFC_DATA_READY, &phba->data_flags);
 801
 802         /* Wake up worker thread */
 803         wake_up(&phba->work_waitq);
 804         return;
 805 }
 806
 807 static inline void
 808 lpfc_sli_read_hs(struct lpfc_hba *phba)
 809 {
 810         /*
 811          * There was a link/board error. Read the status register to retrieve
 812          * the error event and process it.
 813          */
 814         phba->sli.slistat.err_attn_event++;
 815
 816         /* Save status info */
 817         phba->work_hs = readl(phba->HSregaddr);
 818         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
 819         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
 820
 821         /* Clear chip Host Attention error bit */
 822         writel(HA_ERATT, phba->HAregaddr);
 823         readl(phba->HAregaddr); /* flush */
 824         phba->pport->stopped = 1;
 825
 826         return;
 827 }