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) 2004-2011 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <scsi/scsi_host.h>
  23
  24 #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS)
  25 #define CONFIG_SCSI_LPFC_DEBUG_FS
  26 #endif
  27
  28 struct lpfc_sli2_slim;
  29
  30 #define LPFC_PCI_DEV_LP         0x1
  31 #define LPFC_PCI_DEV_OC         0x2
  32
  33 #define LPFC_SLI_REV2           2
  34 #define LPFC_SLI_REV3           3
  35 #define LPFC_SLI_REV4           4
  36
  37 #define LPFC_MAX_TARGET         4096    /* max number of targets supported */
  38 #define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els
  39                                            requests */
  40 #define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
  41                                            the NameServer  before giving up. */
  42 #define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
  43 #define LPFC_DEFAULT_SG_SEG_CNT 64      /* sg element count per scsi cmnd */
  44 #define LPFC_DEFAULT_MENLO_SG_SEG_CNT 128       /* sg element count per scsi
  45                 cmnd for menlo needs nearly twice as for firmware
  46                 downloads using bsg */
  47 #define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
  48 #define LPFC_MAX_SG_SEG_CNT     4096    /* sg element count per scsi cmnd */
  49 #define LPFC_MAX_SGE_SIZE       0x80000000 /* Maximum data allowed in a SGE */
  50 #define LPFC_MAX_PROT_SG_SEG_CNT 4096   /* prot sg element count per scsi cmd*/
  51 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  52 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  53 #define LPFC_VNAME_LEN          100     /* vport symbolic name length */
  54 #define LPFC_TGTQ_INTERVAL      40000   /* Min amount of time between tgt
  55                                            queue depth change in millisecs */
  56 #define LPFC_TGTQ_RAMPUP_PCENT  5       /* Target queue rampup in percentage */
  57 #define LPFC_MIN_TGT_QDEPTH     10
  58 #define LPFC_MAX_TGT_QDEPTH     0xFFFF
  59
  60 #define  LPFC_MAX_BUCKET_COUNT 20       /* Maximum no. of buckets for stat data
  61                                            collection. */
  62 /*
  63  * Following time intervals are used of adjusting SCSI device
  64  * queue depths when there are driver resource error or Firmware
  65  * resource error.
  66  */
  67 #define QUEUE_RAMP_DOWN_INTERVAL        (1 * HZ)   /* 1 Second */
  68 #define QUEUE_RAMP_UP_INTERVAL          (300 * HZ) /* 5 minutes */
  69
  70 /* Number of exchanges reserved for discovery to complete */
  71 #define LPFC_DISC_IOCB_BUFF_COUNT 20
  72
  73 #define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  74 #define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  75
  76 /* Error Attention event polling interval */
  77 #define LPFC_ERATT_POLL_INTERVAL        5 /* EATT poll interval in seconds */
  78
  79 /* Define macros for 64 bit support */
  80 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  81 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  82 #define getPaddr(high, low)  ((dma_addr_t)( \
  83                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  84 /* Provide maximum configuration definitions. */
  85 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  86 #define FC_MAX_ADPTMSG          64
  87
  88 #define MAX_HBAEVT      32
  89
  90 /* Number of MSI-X vectors the driver uses */
  91 #define LPFC_MSIX_VECTORS       2
  92
  93 /* lpfc wait event data ready flag */
  94 #define LPFC_DATA_READY         (1<<0)
  95
  96 enum lpfc_polling_flags {
  97         ENABLE_FCP_RING_POLLING = 0x1,
  98         DISABLE_FCP_RING_INT    = 0x2
  99 };
 100
 101 /* Provide DMA memory definitions the driver uses per port instance. */
 102 struct lpfc_dmabuf {
 103         struct list_head list;
 104         void *virt;             /* virtual address ptr */
 105         dma_addr_t phys;        /* mapped address */
 106         uint32_t   buffer_tag;  /* used for tagged queue ring */
 107 };
 108
 109 struct lpfc_dma_pool {
 110         struct lpfc_dmabuf   *elements;
 111         uint32_t    max_count;
 112         uint32_t    current_count;
 113 };
 114
 115 struct hbq_dmabuf {
 116         struct lpfc_dmabuf hbuf;
 117         struct lpfc_dmabuf dbuf;
 118         uint32_t size;
 119         uint32_t tag;
 120         struct lpfc_cq_event cq_event;
 121         unsigned long time_stamp;
 122 };
 123
 124 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
 125 #define MEM_PRI         0x100
 126
 127
 128 /****************************************************************************/
 129 /*      Device VPD save area                                                */
 130 /****************************************************************************/
 131 typedef struct lpfc_vpd {
 132         uint32_t status;        /* vpd status value */
 133         uint32_t length;        /* number of bytes actually returned */
 134         struct {
 135                 uint32_t rsvd1; /* Revision numbers */
 136                 uint32_t biuRev;
 137                 uint32_t smRev;
 138                 uint32_t smFwRev;
 139                 uint32_t endecRev;
 140                 uint16_t rBit;
 141                 uint8_t fcphHigh;
 142                 uint8_t fcphLow;
 143                 uint8_t feaLevelHigh;
 144                 uint8_t feaLevelLow;
 145                 uint32_t postKernRev;
 146                 uint32_t opFwRev;
 147                 uint8_t opFwName[16];
 148                 uint32_t sli1FwRev;
 149                 uint8_t sli1FwName[16];
 150                 uint32_t sli2FwRev;
 151                 uint8_t sli2FwName[16];
 152         } rev;
 153         struct {
 154 #ifdef __BIG_ENDIAN_BITFIELD
 155                 uint32_t rsvd3  :19;  /* Reserved                             */
 156                 uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 157                 uint32_t rsvd2  : 3;  /* Reserved                             */
 158                 uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 159                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 160                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 161                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 162                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 163                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 164                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 165                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 166                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 167 #else   /*  __LITTLE_ENDIAN */
 168                 uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 169                 uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 170                 uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 171                 uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 172                 uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 173                 uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 174                 uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 175                 uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 176                 uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 177                 uint32_t rsvd2  : 3;  /* Reserved                             */
 178                 uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 179                 uint32_t rsvd3  :19;  /* Reserved                             */
 180 #endif
 181         } sli3Feat;
 182 } lpfc_vpd_t;
 183
 184 struct lpfc_scsi_buf;
 185
 186
 187 /*
 188  * lpfc stat counters
 189  */
 190 struct lpfc_stats {
 191         /* Statistics for ELS commands */
 192         uint32_t elsLogiCol;
 193         uint32_t elsRetryExceeded;
 194         uint32_t elsXmitRetry;
 195         uint32_t elsDelayRetry;
 196         uint32_t elsRcvDrop;
 197         uint32_t elsRcvFrame;
 198         uint32_t elsRcvRSCN;
 199         uint32_t elsRcvRNID;
 200         uint32_t elsRcvFARP;
 201         uint32_t elsRcvFARPR;
 202         uint32_t elsRcvFLOGI;
 203         uint32_t elsRcvPLOGI;
 204         uint32_t elsRcvADISC;
 205         uint32_t elsRcvPDISC;
 206         uint32_t elsRcvFAN;
 207         uint32_t elsRcvLOGO;
 208         uint32_t elsRcvPRLO;
 209         uint32_t elsRcvPRLI;
 210         uint32_t elsRcvLIRR;
 211         uint32_t elsRcvRLS;
 212         uint32_t elsRcvRPS;
 213         uint32_t elsRcvRPL;
 214         uint32_t elsRcvRRQ;
 215         uint32_t elsRcvRTV;
 216         uint32_t elsRcvECHO;
 217         uint32_t elsXmitFLOGI;
 218         uint32_t elsXmitFDISC;
 219         uint32_t elsXmitPLOGI;
 220         uint32_t elsXmitPRLI;
 221         uint32_t elsXmitADISC;
 222         uint32_t elsXmitLOGO;
 223         uint32_t elsXmitSCR;
 224         uint32_t elsXmitRNID;
 225         uint32_t elsXmitFARP;
 226         uint32_t elsXmitFARPR;
 227         uint32_t elsXmitACC;
 228         uint32_t elsXmitLSRJT;
 229
 230         uint32_t frameRcvBcast;
 231         uint32_t frameRcvMulti;
 232         uint32_t strayXmitCmpl;
 233         uint32_t frameXmitDelay;
 234         uint32_t xriCmdCmpl;
 235         uint32_t xriStatErr;
 236         uint32_t LinkUp;
 237         uint32_t LinkDown;
 238         uint32_t LinkMultiEvent;
 239         uint32_t NoRcvBuf;
 240         uint32_t fcpCmd;
 241         uint32_t fcpCmpl;
 242         uint32_t fcpRspErr;
 243         uint32_t fcpRemoteStop;
 244         uint32_t fcpPortRjt;
 245         uint32_t fcpPortBusy;
 246         uint32_t fcpError;
 247         uint32_t fcpLocalErr;
 248 };
 249
 250 struct lpfc_hba;
 251
 252
 253 enum discovery_state {
 254         LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 255         LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 256         LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 257         LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 258         LPFC_FDISC             =  8,    /* FDISC sent for vport */
 259         LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 260                                          * configured */
 261         LPFC_NS_REG            =  10,   /* Register with NameServer */
 262         LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 263         LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 264                                          * device authentication / discovery */
 265         LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 266         LPFC_VPORT_READY       =  32,
 267 };
 268
 269 enum hba_state {
 270         LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 271         LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 272         LPFC_INIT_START      =   2,   /* Initial state after board reset */
 273         LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 274         LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 275         LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 276         LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 277                                        * CLEAR_LA */
 278         LPFC_HBA_READY       =  32,
 279         LPFC_HBA_ERROR       =  -1
 280 };
 281
 282 struct lpfc_vport {
 283         struct lpfc_hba *phba;
 284         struct list_head listentry;
 285         uint8_t port_type;
 286 #define LPFC_PHYSICAL_PORT 1
 287 #define LPFC_NPIV_PORT  2
 288 #define LPFC_FABRIC_PORT 3
 289         enum discovery_state port_state;
 290
 291         uint16_t vpi;
 292         uint16_t vfi;
 293         uint8_t vpi_state;
 294 #define LPFC_VPI_REGISTERED     0x1
 295
 296         uint32_t fc_flag;       /* FC flags */
 297 /* Several of these flags are HBA centric and should be moved to
 298  * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 299  */
 300 #define FC_PT2PT                0x1      /* pt2pt with no fabric */
 301 #define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 302 #define FC_DISC_TMO             0x4      /* Discovery timer running */
 303 #define FC_PUBLIC_LOOP          0x8      /* Public loop */
 304 #define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 305 #define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 306 #define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 307 #define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 308 #define FC_FABRIC               0x100    /* We are fabric attached */
 309 #define FC_VPORT_LOGO_RCVD      0x200    /* LOGO received on vport */
 310 #define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 311 #define FC_LOGO_RCVD_DID_CHNG   0x800    /* FDISC on phys port detect DID chng*/
 312 #define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 313 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 314 #define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 315 #define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 316 #define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 317 #define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 318 #define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
 319 #define FC_VPORT_CVL_RCVD       0x400000 /* VLink failed due to CVL      */
 320 #define FC_VFI_REGISTERED       0x800000 /* VFI is registered */
 321 #define FC_FDISC_COMPLETED      0x1000000/* FDISC completed */
 322 #define FC_DISC_DELAYED         0x2000000/* Delay NPort discovery */
 323
 324         uint32_t ct_flags;
 325 #define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 326 #define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 327 #define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 328 #define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 329 #define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 330
 331         struct list_head fc_nodes;
 332
 333         /* Keep counters for the number of entries in each list. */
 334         uint16_t fc_plogi_cnt;
 335         uint16_t fc_adisc_cnt;
 336         uint16_t fc_reglogin_cnt;
 337         uint16_t fc_prli_cnt;
 338         uint16_t fc_unmap_cnt;
 339         uint16_t fc_map_cnt;
 340         uint16_t fc_npr_cnt;
 341         uint16_t fc_unused_cnt;
 342         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 343
 344         uint32_t fc_myDID;      /* fibre channel S_ID */
 345         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 346         struct lpfc_name fabric_portname;
 347         struct lpfc_name fabric_nodename;
 348
 349         int32_t stopped;   /* HBA has not been restarted since last ERATT */
 350         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 351
 352         uint32_t num_disc_nodes;        /*in addition to hba_state */
 353
 354         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 355         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 356         uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 357         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 358         struct lpfc_name fc_nodename;   /* fc nodename */
 359         struct lpfc_name fc_portname;   /* fc portname */
 360
 361         struct lpfc_work_evt disc_timeout_evt;
 362
 363         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 364         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 365         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 366
 367         spinlock_t work_port_lock;
 368         uint32_t work_port_events; /* Timeout to be handled  */
 369 #define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 370 #define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 371 #define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 372 #define WORKER_DELAYED_DISC_TMO        0x8      /* vport: delayed discovery */
 373
 374 #define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 375 #define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 376 #define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 377 #define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 378 #define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 379 #define WORKER_SERVICE_TXQ             0x2000   /* hba: IOCBs on the txq */
 380
 381         struct timer_list fc_fdmitmo;
 382         struct timer_list els_tmofunc;
 383         struct timer_list delayed_disc_tmo;
 384
 385         int unreg_vpi_cmpl;
 386
 387         uint8_t load_flag;
 388 #define FC_LOADING              0x1     /* HBA in process of loading drvr */
 389 #define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 390         /* Vport Config Parameters */
 391         uint32_t cfg_scan_down;
 392         uint32_t cfg_lun_queue_depth;
 393         uint32_t cfg_nodev_tmo;
 394         uint32_t cfg_devloss_tmo;
 395         uint32_t cfg_restrict_login;
 396         uint32_t cfg_peer_port_login;
 397         uint32_t cfg_fcp_class;
 398         uint32_t cfg_use_adisc;
 399         uint32_t cfg_fdmi_on;
 400         uint32_t cfg_discovery_threads;
 401         uint32_t cfg_log_verbose;
 402         uint32_t cfg_max_luns;
 403         uint32_t cfg_enable_da_id;
 404         uint32_t cfg_max_scsicmpl_time;
 405         uint32_t cfg_tgt_queue_depth;
 406
 407         uint32_t dev_loss_tmo_changed;
 408
 409         struct fc_vport *fc_vport;
 410
 411 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 412         struct dentry *debug_disc_trc;
 413         struct dentry *debug_nodelist;
 414         struct dentry *vport_debugfs_root;
 415         struct lpfc_debugfs_trc *disc_trc;
 416         atomic_t disc_trc_cnt;
 417 #endif
 418         uint8_t stat_data_enabled;
 419         uint8_t stat_data_blocked;
 420         struct list_head rcv_buffer_list;
 421         unsigned long rcv_buffer_time_stamp;
 422         uint32_t vport_flag;
 423 #define STATIC_VPORT    1
 424 };
 425
 426 struct hbq_s {
 427         uint16_t entry_count;     /* Current number of HBQ slots */
 428         uint16_t buffer_count;    /* Current number of buffers posted */
 429         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 430         uint32_t hbqPutIdx;       /* HBQ slot to use */
 431         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 432         void    *hbq_virt;        /* Virtual ptr to this hbq */
 433         struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 434                                   /* Callback for HBQ buffer allocation */
 435         struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 436                                   /* Callback for HBQ buffer free */
 437         void               (*hbq_free_buffer) (struct lpfc_hba *,
 438                                                struct hbq_dmabuf *);
 439 };
 440
 441 #define LPFC_MAX_HBQS  4
 442 /* this matches the position in the lpfc_hbq_defs array */
 443 #define LPFC_ELS_HBQ    0
 444 #define LPFC_EXTRA_HBQ  1
 445
 446 enum hba_temp_state {
 447         HBA_NORMAL_TEMP,
 448         HBA_OVER_TEMP
 449 };
 450
 451 enum intr_type_t {
 452         NONE = 0,
 453         INTx,
 454         MSI,
 455         MSIX,
 456 };
 457
 458 struct unsol_rcv_ct_ctx {
 459         uint32_t ctxt_id;
 460         uint32_t SID;
 461         uint32_t flags;
 462 #define UNSOL_VALID     0x00000001
 463         uint16_t oxid;
 464         uint16_t rxid;
 465 };
 466
 467 #define LPFC_USER_LINK_SPEED_AUTO       0       /* auto select (default)*/
 468 #define LPFC_USER_LINK_SPEED_1G         1       /* 1 Gigabaud */
 469 #define LPFC_USER_LINK_SPEED_2G         2       /* 2 Gigabaud */
 470 #define LPFC_USER_LINK_SPEED_4G         4       /* 4 Gigabaud */
 471 #define LPFC_USER_LINK_SPEED_8G         8       /* 8 Gigabaud */
 472 #define LPFC_USER_LINK_SPEED_10G        10      /* 10 Gigabaud */
 473 #define LPFC_USER_LINK_SPEED_16G        16      /* 16 Gigabaud */
 474 #define LPFC_USER_LINK_SPEED_MAX        LPFC_USER_LINK_SPEED_16G
 475 #define LPFC_USER_LINK_SPEED_BITMAP ((1 << LPFC_USER_LINK_SPEED_16G) | \
 476                                      (1 << LPFC_USER_LINK_SPEED_10G) | \
 477                                      (1 << LPFC_USER_LINK_SPEED_8G) | \
 478                                      (1 << LPFC_USER_LINK_SPEED_4G) | \
 479                                      (1 << LPFC_USER_LINK_SPEED_2G) | \
 480                                      (1 << LPFC_USER_LINK_SPEED_1G) | \
 481                                      (1 << LPFC_USER_LINK_SPEED_AUTO))
 482 #define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8, 10, 16"
 483
 484 enum nemb_type {
 485         nemb_mse = 1,
 486         nemb_hbd
 487 };
 488
 489 enum mbox_type {
 490         mbox_rd = 1,
 491         mbox_wr
 492 };
 493
 494 enum dma_type {
 495         dma_mbox = 1,
 496         dma_ebuf
 497 };
 498
 499 enum sta_type {
 500         sta_pre_addr = 1,
 501         sta_pos_addr
 502 };
 503
 504 struct lpfc_mbox_ext_buf_ctx {
 505         uint32_t state;
 506 #define LPFC_BSG_MBOX_IDLE              0
 507 #define LPFC_BSG_MBOX_HOST              1
 508 #define LPFC_BSG_MBOX_PORT              2
 509 #define LPFC_BSG_MBOX_DONE              3
 510 #define LPFC_BSG_MBOX_ABTS              4
 511         enum nemb_type nembType;
 512         enum mbox_type mboxType;
 513         uint32_t numBuf;
 514         uint32_t mbxTag;
 515         uint32_t seqNum;
 516         struct lpfc_dmabuf *mbx_dmabuf;
 517         struct list_head ext_dmabuf_list;
 518 };
 519
 520 struct lpfc_hba {
 521         /* SCSI interface function jump table entries */
 522         int (*lpfc_new_scsi_buf)
 523                 (struct lpfc_vport *, int);
 524         struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
 525                 (struct lpfc_hba *, struct lpfc_nodelist *);
 526         int (*lpfc_scsi_prep_dma_buf)
 527                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 528         void (*lpfc_scsi_unprep_dma_buf)
 529                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 530         void (*lpfc_release_scsi_buf)
 531                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 532         void (*lpfc_rampdown_queue_depth)
 533                 (struct lpfc_hba *);
 534         void (*lpfc_scsi_prep_cmnd)
 535                 (struct lpfc_vport *, struct lpfc_scsi_buf *,
 536                  struct lpfc_nodelist *);
 537
 538         /* IOCB interface function jump table entries */
 539         int (*__lpfc_sli_issue_iocb)
 540                 (struct lpfc_hba *, uint32_t,
 541                  struct lpfc_iocbq *, uint32_t);
 542         void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
 543                          struct lpfc_iocbq *);
 544         int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
 545         IOCB_t * (*lpfc_get_iocb_from_iocbq)
 546                 (struct lpfc_iocbq *);
 547         void (*lpfc_scsi_cmd_iocb_cmpl)
 548                 (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
 549
 550         /* MBOX interface function jump table entries */
 551         int (*lpfc_sli_issue_mbox)
 552                 (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
 553
 554         /* Slow-path IOCB process function jump table entries */
 555         void (*lpfc_sli_handle_slow_ring_event)
 556                 (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 557                  uint32_t mask);
 558
 559         /* INIT device interface function jump table entries */
 560         int (*lpfc_sli_hbq_to_firmware)
 561                 (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
 562         int (*lpfc_sli_brdrestart)
 563                 (struct lpfc_hba *);
 564         int (*lpfc_sli_brdready)
 565                 (struct lpfc_hba *, uint32_t);
 566         void (*lpfc_handle_eratt)
 567                 (struct lpfc_hba *);
 568         void (*lpfc_stop_port)
 569                 (struct lpfc_hba *);
 570         int (*lpfc_hba_init_link)
 571                 (struct lpfc_hba *, uint32_t);
 572         int (*lpfc_hba_down_link)
 573                 (struct lpfc_hba *, uint32_t);
 574         int (*lpfc_selective_reset)
 575                 (struct lpfc_hba *);
 576
 577         int (*lpfc_bg_scsi_prep_dma_buf)
 578                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 579         /* Add new entries here */
 580
 581         /* SLI4 specific HBA data structure */
 582         struct lpfc_sli4_hba sli4_hba;
 583
 584         struct lpfc_sli sli;
 585         uint8_t pci_dev_grp;    /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
 586         uint32_t sli_rev;               /* SLI2, SLI3, or SLI4 */
 587         uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 588 #define LPFC_SLI3_HBQ_ENABLED           0x01
 589 #define LPFC_SLI3_NPIV_ENABLED          0x02
 590 #define LPFC_SLI3_VPORT_TEARDOWN        0x04
 591 #define LPFC_SLI3_CRP_ENABLED           0x08
 592 #define LPFC_SLI3_BG_ENABLED            0x20
 593 #define LPFC_SLI3_DSS_ENABLED           0x40
 594 #define LPFC_SLI4_PERFH_ENABLED         0x80
 595 #define LPFC_SLI4_PHWQ_ENABLED          0x100
 596         uint32_t iocb_cmd_size;
 597         uint32_t iocb_rsp_size;
 598
 599         enum hba_state link_state;
 600         uint32_t link_flag;     /* link state flags */
 601 #define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 602                                         /* This flag is set while issuing */
 603                                         /* INIT_LINK mailbox command */
 604 #define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 605 #define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 606
 607         uint32_t hba_flag;      /* hba generic flags */
 608 #define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 609 #define DEFER_ERATT             0x2 /* Deferred error attention in progress */
 610 #define HBA_FCOE_MODE           0x4 /* HBA function in FCoE Mode */
 611 #define HBA_SP_QUEUE_EVT        0x8 /* Slow-path qevt posted to worker thread*/
 612 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
 613 #define FCP_XRI_ABORT_EVENT     0x20
 614 #define ELS_XRI_ABORT_EVENT     0x40
 615 #define ASYNC_EVENT             0x80
 616 #define LINK_DISABLED           0x100 /* Link disabled by user */
 617 #define FCF_TS_INPROG           0x200 /* FCF table scan in progress */
 618 #define FCF_RR_INPROG           0x400 /* FCF roundrobin flogi in progress */
 619 #define HBA_FIP_SUPPORT         0x800 /* FIP support in HBA */
 620 #define HBA_AER_ENABLED         0x1000 /* AER enabled with HBA */
 621 #define HBA_DEVLOSS_TMO         0x2000 /* HBA in devloss timeout */
 622 #define HBA_RRQ_ACTIVE          0x4000 /* process the rrq active list */
 623         uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
 624         struct lpfc_dmabuf slim2p;
 625
 626         MAILBOX_t *mbox;
 627         uint32_t *mbox_ext;
 628         struct lpfc_mbox_ext_buf_ctx mbox_ext_buf_ctx;
 629         uint32_t ha_copy;
 630         struct _PCB *pcb;
 631         struct _IOCB *IOCBs;
 632
 633         struct lpfc_dmabuf hbqslimp;
 634
 635         uint16_t pci_cfg_value;
 636
 637         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 638
 639         uint32_t fc_eventTag;   /* event tag for link attention */
 640         uint32_t link_events;
 641
 642         /* These fields used to be binfo */
 643         uint32_t fc_pref_DID;   /* preferred D_ID */
 644         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 645         uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
 646         uint32_t fc_edtov;      /* E_D_TOV timer value */
 647         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 648         uint32_t fc_ratov;      /* R_A_TOV timer value */
 649         uint32_t fc_rttov;      /* R_T_TOV timer value */
 650         uint32_t fc_altov;      /* AL_TOV timer value */
 651         uint32_t fc_crtov;      /* C_R_TOV timer value */
 652         uint32_t fc_citov;      /* C_I_TOV timer value */
 653
 654         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 655         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 656
 657         uint32_t lmt;
 658
 659         uint32_t fc_topology;   /* link topology, from LINK INIT */
 660
 661         struct lpfc_stats fc_stat;
 662
 663         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 664         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 665
 666         uint8_t  wwnn[8];
 667         uint8_t  wwpn[8];
 668         uint32_t RandomData[7];
 669
 670         /* HBA Config Parameters */
 671         uint32_t cfg_ack0;
 672         uint32_t cfg_enable_npiv;
 673         uint32_t cfg_enable_rrq;
 674         uint32_t cfg_topology;
 675         uint32_t cfg_link_speed;
 676 #define LPFC_FCF_FOV 1          /* Fast fcf failover */
 677 #define LPFC_FCF_PRIORITY 2     /* Priority fcf failover */
 678         uint32_t cfg_fcf_failover_policy;
 679         uint32_t cfg_cr_delay;
 680         uint32_t cfg_cr_count;
 681         uint32_t cfg_multi_ring_support;
 682         uint32_t cfg_multi_ring_rctl;
 683         uint32_t cfg_multi_ring_type;
 684         uint32_t cfg_poll;
 685         uint32_t cfg_poll_tmo;
 686         uint32_t cfg_use_msi;
 687         uint32_t cfg_fcp_imax;
 688         uint32_t cfg_fcp_wq_count;
 689         uint32_t cfg_fcp_eq_count;
 690         uint32_t cfg_sg_seg_cnt;
 691         uint32_t cfg_prot_sg_seg_cnt;
 692         uint32_t cfg_sg_dma_buf_size;
 693         uint64_t cfg_soft_wwnn;
 694         uint64_t cfg_soft_wwpn;
 695         uint32_t cfg_hba_queue_depth;
 696         uint32_t cfg_enable_hba_reset;
 697         uint32_t cfg_enable_hba_heartbeat;
 698         uint32_t cfg_enable_bg;
 699         uint32_t cfg_hostmem_hgp;
 700         uint32_t cfg_log_verbose;
 701         uint32_t cfg_aer_support;
 702         uint32_t cfg_sriov_nr_virtfn;
 703         uint32_t cfg_iocb_cnt;
 704         uint32_t cfg_suppress_link_up;
 705 #define LPFC_INITIALIZE_LINK              0     /* do normal init_link mbox */
 706 #define LPFC_DELAY_INIT_LINK              1     /* layered driver hold off */
 707 #define LPFC_DELAY_INIT_LINK_INDEFINITELY 2     /* wait, manual intervention */
 708         uint32_t cfg_enable_dss;
 709         lpfc_vpd_t vpd;         /* vital product data */
 710
 711         struct pci_dev *pcidev;
 712         struct list_head      work_list;
 713         uint32_t              work_ha;      /* Host Attention Bits for WT */
 714         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 715         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 716         uint32_t              work_status[2]; /* Extra status from SLIM */
 717
 718         wait_queue_head_t    work_waitq;
 719         struct task_struct   *worker_thread;
 720         unsigned long data_flags;
 721
 722         uint32_t hbq_in_use;            /* HBQs in use flag */
 723         struct list_head rb_pend_list;  /* Received buffers to be processed */
 724         uint32_t hbq_count;             /* Count of configured HBQs */
 725         struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 726
 727         uint32_t fcp_qidx;              /* next work queue to post work to */
 728
 729         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 730         unsigned long pci_bar1_map;     /* Physical address for PCI BAR1 */
 731         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 732         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 733                                            PCI BAR0 */
 734         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 735                                             PCI BAR2 */
 736
 737         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 738         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 739         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 740         void __iomem *HSregaddr;        /* virtual address for host status
 741                                            reg */
 742         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 743
 744         struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 745         struct lpfc_pgp   *port_gp;
 746         uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 747         uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 748
 749         int brd_no;                     /* FC board number */
 750         char SerialNumber[32];          /* adapter Serial Number */
 751         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 752         char ModelDesc[256];            /* Model Description */
 753         char ModelName[80];             /* Model Name */
 754         char ProgramType[256];          /* Program Type */
 755         char Port[20];                  /* Port No */
 756         uint8_t vpd_flag;               /* VPD data flag */
 757
 758 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 759 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 760 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 761 #define VPD_PORT            0x8         /* valid vpd port data */
 762 #define VPD_MASK            0xf         /* mask for any vpd data */
 763
 764         uint8_t soft_wwn_enable;
 765
 766         struct timer_list fcp_poll_timer;
 767         struct timer_list eratt_poll;
 768
 769         /*
 770          * stat  counters
 771          */
 772         uint64_t fc4InputRequests;
 773         uint64_t fc4OutputRequests;
 774         uint64_t fc4ControlRequests;
 775         uint64_t bg_guard_err_cnt;
 776         uint64_t bg_apptag_err_cnt;
 777         uint64_t bg_reftag_err_cnt;
 778
 779         /* fastpath list. */
 780         spinlock_t scsi_buf_list_lock;
 781         struct list_head lpfc_scsi_buf_list;
 782         uint32_t total_scsi_bufs;
 783         struct list_head lpfc_iocb_list;
 784         uint32_t total_iocbq_bufs;
 785         struct list_head active_rrq_list;
 786         spinlock_t hbalock;
 787
 788         /* pci_mem_pools */
 789         struct pci_pool *lpfc_scsi_dma_buf_pool;
 790         struct pci_pool *lpfc_mbuf_pool;
 791         struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
 792         struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
 793         struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
 794         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 795
 796         mempool_t *mbox_mem_pool;
 797         mempool_t *nlp_mem_pool;
 798         mempool_t *rrq_pool;
 799
 800         struct fc_host_statistics link_stats;
 801         enum intr_type_t intr_type;
 802         uint32_t intr_mode;
 803 #define LPFC_INTR_ERROR 0xFFFFFFFF
 804         struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 805
 806         struct list_head port_list;
 807         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 808         uint16_t max_vpi;               /* Maximum virtual nports */
 809 #define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 810         uint16_t max_vports;            /*
 811                                          * For IOV HBAs max_vpi can change
 812                                          * after a reset. max_vports is max
 813                                          * number of vports present. This can
 814                                          * be greater than max_vpi.
 815                                          */
 816         uint16_t vpi_base;
 817         uint16_t vfi_base;
 818         unsigned long *vpi_bmask;       /* vpi allocation table */
 819         uint16_t *vpi_ids;
 820         uint16_t vpi_count;
 821         struct list_head lpfc_vpi_blk_list;
 822
 823         /* Data structure used by fabric iocb scheduler */
 824         struct list_head fabric_iocb_list;
 825         atomic_t fabric_iocb_count;
 826         struct timer_list fabric_block_timer;
 827         unsigned long bit_flags;
 828 #define FABRIC_COMANDS_BLOCKED  0
 829         atomic_t num_rsrc_err;
 830         atomic_t num_cmd_success;
 831         unsigned long last_rsrc_error_time;
 832         unsigned long last_ramp_down_time;
 833         unsigned long last_ramp_up_time;
 834 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 835         struct dentry *hba_debugfs_root;
 836         atomic_t debugfs_vport_count;
 837         struct dentry *debug_hbqinfo;
 838         struct dentry *debug_dumpHostSlim;
 839         struct dentry *debug_dumpHBASlim;
 840         struct dentry *debug_dumpData;   /* BlockGuard BPL */
 841         struct dentry *debug_dumpDif;    /* BlockGuard BPL */
 842         struct dentry *debug_InjErrLBA;  /* LBA to inject errors at */
 843         struct dentry *debug_writeGuard; /* inject write guard_tag errors */
 844         struct dentry *debug_writeApp;   /* inject write app_tag errors */
 845         struct dentry *debug_writeRef;   /* inject write ref_tag errors */
 846         struct dentry *debug_readGuard;  /* inject read guard_tag errors */
 847         struct dentry *debug_readApp;    /* inject read app_tag errors */
 848         struct dentry *debug_readRef;    /* inject read ref_tag errors */
 849
 850         /* T10 DIF error injection */
 851         uint32_t lpfc_injerr_wgrd_cnt;
 852         uint32_t lpfc_injerr_wapp_cnt;
 853         uint32_t lpfc_injerr_wref_cnt;
 854         uint32_t lpfc_injerr_rgrd_cnt;
 855         uint32_t lpfc_injerr_rapp_cnt;
 856         uint32_t lpfc_injerr_rref_cnt;
 857         sector_t lpfc_injerr_lba;
 858 #define LPFC_INJERR_LBA_OFF     (sector_t)(-1)
 859
 860         struct dentry *debug_slow_ring_trc;
 861         struct lpfc_debugfs_trc *slow_ring_trc;
 862         atomic_t slow_ring_trc_cnt;
 863         /* iDiag debugfs sub-directory */
 864         struct dentry *idiag_root;
 865         struct dentry *idiag_pci_cfg;
 866         struct dentry *idiag_bar_acc;
 867         struct dentry *idiag_que_info;
 868         struct dentry *idiag_que_acc;
 869         struct dentry *idiag_drb_acc;
 870         struct dentry *idiag_ctl_acc;
 871         struct dentry *idiag_mbx_acc;
 872         struct dentry *idiag_ext_acc;
 873 #endif
 874
 875         /* Used for deferred freeing of ELS data buffers */
 876         struct list_head elsbuf;
 877         int elsbuf_cnt;
 878         int elsbuf_prev_cnt;
 879
 880         uint8_t temp_sensor_support;
 881         /* Fields used for heart beat. */
 882         unsigned long last_completion_time;
 883         unsigned long skipped_hb;
 884         struct timer_list hb_tmofunc;
 885         uint8_t hb_outstanding;
 886         struct timer_list rrq_tmr;
 887         enum hba_temp_state over_temp_state;
 888         /* ndlp reference management */
 889         spinlock_t ndlp_lock;
 890         /*
 891          * Following bit will be set for all buffer tags which are not
 892          * associated with any HBQ.
 893          */
 894 #define QUE_BUFTAG_BIT  (1<<31)
 895         uint32_t buffer_tag_count;
 896         int wait_4_mlo_maint_flg;
 897         wait_queue_head_t wait_4_mlo_m_q;
 898         /* data structure used for latency data collection */
 899 #define LPFC_NO_BUCKET     0
 900 #define LPFC_LINEAR_BUCKET 1
 901 #define LPFC_POWER2_BUCKET 2
 902         uint8_t  bucket_type;
 903         uint32_t bucket_base;
 904         uint32_t bucket_step;
 905
 906 /* Maximum number of events that can be outstanding at any time*/
 907 #define LPFC_MAX_EVT_COUNT 512
 908         atomic_t fast_event_count;
 909         uint32_t fcoe_eventtag;
 910         uint32_t fcoe_eventtag_at_fcf_scan;
 911         uint32_t fcoe_cvl_eventtag;
 912         uint32_t fcoe_cvl_eventtag_attn;
 913         struct lpfc_fcf fcf;
 914         uint8_t fc_map[3];
 915         uint8_t valid_vlan;
 916         uint16_t vlan_id;
 917         struct list_head fcf_conn_rec_list;
 918
 919         spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
 920         struct list_head ct_ev_waiters;
 921         struct unsol_rcv_ct_ctx ct_ctx[64];
 922         uint32_t ctx_idx;
 923
 924         uint8_t menlo_flag;     /* menlo generic flags */
 925 #define HBA_MENLO_SUPPORT       0x1 /* HBA supports menlo commands */
 926         uint32_t iocb_cnt;
 927         uint32_t iocb_max;
 928         atomic_t sdev_cnt;
 929         uint8_t fips_spec_rev;
 930         uint8_t fips_level;
 931 };
 932
 933 static inline struct Scsi_Host *
 934 lpfc_shost_from_vport(struct lpfc_vport *vport)
 935 {
 936         return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 937 }
 938
 939 static inline void
 940 lpfc_set_loopback_flag(struct lpfc_hba *phba)
 941 {
 942         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 943                 phba->link_flag |= LS_LOOPBACK_MODE;
 944         else
 945                 phba->link_flag &= ~LS_LOOPBACK_MODE;
 946 }
 947
 948 static inline int
 949 lpfc_is_link_up(struct lpfc_hba *phba)
 950 {
 951         return  phba->link_state == LPFC_LINK_UP ||
 952                 phba->link_state == LPFC_CLEAR_LA ||
 953                 phba->link_state == LPFC_HBA_READY;
 954 }
 955
 956 static inline void
 957 lpfc_worker_wake_up(struct lpfc_hba *phba)
 958 {
 959         /* Set the lpfc data pending flag */
 960         set_bit(LPFC_DATA_READY, &phba->data_flags);
 961
 962         /* Wake up worker thread */
 963         wake_up(&phba->work_waitq);
 964         return;
 965 }
 966
 967 static inline int
 968 lpfc_readl(void __iomem *addr, uint32_t *data)
 969 {
 970         uint32_t temp;
 971         temp = readl(addr);
 972         if (temp == 0xffffffff)
 973                 return -EIO;
 974         *data = temp;
 975         return 0;
 976 }
 977
 978 static inline int
 979 lpfc_sli_read_hs(struct lpfc_hba *phba)
 980 {
 981         /*
 982          * There was a link/board error. Read the status register to retrieve
 983          * the error event and process it.
 984          */
 985         phba->sli.slistat.err_attn_event++;
 986
 987         /* Save status info and check for unplug error */
 988         if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
 989                 lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
 990                 lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
 991                 return -EIO;
 992         }
 993
 994         /* Clear chip Host Attention error bit */
 995         writel(HA_ERATT, phba->HAregaddr);
 996         readl(phba->HAregaddr); /* flush */
 997         phba->pport->stopped = 1;
 998
 999         return 0;
1000 }