linux/drivers/scsi/lpfc/lpfc.h
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   1/*******************************************************************
   2 * This file is part of the Emulex Linux Device Driver for         *
   3 * Fibre Channel Host Bus Adapters.                                *
   4 * Copyright (C) 2004-2010 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>
  23struct lpfc_sli2_slim;
  24
  25#define LPFC_PCI_DEV_LP         0x1
  26#define LPFC_PCI_DEV_OC         0x2
  27
  28#define LPFC_SLI_REV2           2
  29#define LPFC_SLI_REV3           3
  30#define LPFC_SLI_REV4           4
  31
  32#define LPFC_MAX_TARGET         4096    /* max number of targets supported */
  33#define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els
  34                                           requests */
  35#define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
  36                                           the NameServer  before giving up. */
  37#define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
  38#define LPFC_DEFAULT_SG_SEG_CNT 64      /* sg element count per scsi cmnd */
  39#define LPFC_DEFAULT_MENLO_SG_SEG_CNT 128       /* sg element count per scsi
  40                cmnd for menlo needs nearly twice as for firmware
  41                downloads using bsg */
  42#define LPFC_DEFAULT_PROT_SG_SEG_CNT 4096 /* sg protection elements count */
  43#define LPFC_MAX_SG_SEG_CNT     4096    /* sg element count per scsi cmnd */
  44#define LPFC_MAX_PROT_SG_SEG_CNT 4096   /* prot sg element count per scsi cmd*/
  45#define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  46#define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  47#define LPFC_VNAME_LEN          100     /* vport symbolic name length */
  48#define LPFC_TGTQ_INTERVAL      40000   /* Min amount of time between tgt
  49                                           queue depth change in millisecs */
  50#define LPFC_TGTQ_RAMPUP_PCENT  5       /* Target queue rampup in percentage */
  51#define LPFC_MIN_TGT_QDEPTH     10
  52#define LPFC_MAX_TGT_QDEPTH     0xFFFF
  53
  54#define  LPFC_MAX_BUCKET_COUNT 20       /* Maximum no. of buckets for stat data
  55                                           collection. */
  56/*
  57 * Following time intervals are used of adjusting SCSI device
  58 * queue depths when there are driver resource error or Firmware
  59 * resource error.
  60 */
  61#define QUEUE_RAMP_DOWN_INTERVAL        (1 * HZ)   /* 1 Second */
  62#define QUEUE_RAMP_UP_INTERVAL          (300 * HZ) /* 5 minutes */
  63
  64/* Number of exchanges reserved for discovery to complete */
  65#define LPFC_DISC_IOCB_BUFF_COUNT 20
  66
  67#define LPFC_HB_MBOX_INTERVAL   5       /* Heart beat interval in seconds. */
  68#define LPFC_HB_MBOX_TIMEOUT    30      /* Heart beat timeout  in seconds. */
  69
  70/* Error Attention event polling interval */
  71#define LPFC_ERATT_POLL_INTERVAL        5 /* EATT poll interval in seconds */
  72
  73/* Define macros for 64 bit support */
  74#define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  75#define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  76#define getPaddr(high, low)  ((dma_addr_t)( \
  77                             (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  78/* Provide maximum configuration definitions. */
  79#define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  80#define FC_MAX_ADPTMSG          64
  81
  82#define MAX_HBAEVT      32
  83
  84/* Number of MSI-X vectors the driver uses */
  85#define LPFC_MSIX_VECTORS       2
  86
  87/* lpfc wait event data ready flag */
  88#define LPFC_DATA_READY         (1<<0)
  89
  90enum lpfc_polling_flags {
  91        ENABLE_FCP_RING_POLLING = 0x1,
  92        DISABLE_FCP_RING_INT    = 0x2
  93};
  94
  95/* Provide DMA memory definitions the driver uses per port instance. */
  96struct lpfc_dmabuf {
  97        struct list_head list;
  98        void *virt;             /* virtual address ptr */
  99        dma_addr_t phys;        /* mapped address */
 100        uint32_t   buffer_tag;  /* used for tagged queue ring */
 101};
 102
 103struct lpfc_dma_pool {
 104        struct lpfc_dmabuf   *elements;
 105        uint32_t    max_count;
 106        uint32_t    current_count;
 107};
 108
 109struct hbq_dmabuf {
 110        struct lpfc_dmabuf hbuf;
 111        struct lpfc_dmabuf dbuf;
 112        uint32_t size;
 113        uint32_t tag;
 114        struct lpfc_cq_event cq_event;
 115        unsigned long time_stamp;
 116};
 117
 118/* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
 119#define MEM_PRI         0x100
 120
 121
 122/****************************************************************************/
 123/*      Device VPD save area                                                */
 124/****************************************************************************/
 125typedef struct lpfc_vpd {
 126        uint32_t status;        /* vpd status value */
 127        uint32_t length;        /* number of bytes actually returned */
 128        struct {
 129                uint32_t rsvd1; /* Revision numbers */
 130                uint32_t biuRev;
 131                uint32_t smRev;
 132                uint32_t smFwRev;
 133                uint32_t endecRev;
 134                uint16_t rBit;
 135                uint8_t fcphHigh;
 136                uint8_t fcphLow;
 137                uint8_t feaLevelHigh;
 138                uint8_t feaLevelLow;
 139                uint32_t postKernRev;
 140                uint32_t opFwRev;
 141                uint8_t opFwName[16];
 142                uint32_t sli1FwRev;
 143                uint8_t sli1FwName[16];
 144                uint32_t sli2FwRev;
 145                uint8_t sli2FwName[16];
 146        } rev;
 147        struct {
 148#ifdef __BIG_ENDIAN_BITFIELD
 149                uint32_t rsvd3  :19;  /* Reserved                             */
 150                uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 151                uint32_t rsvd2  : 3;  /* Reserved                             */
 152                uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 153                uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 154                uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 155                uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 156                uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 157                uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 158                uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 159                uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 160                uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 161#else   /*  __LITTLE_ENDIAN */
 162                uint32_t cmr    : 1;  /* Configure Max RPIs                   */
 163                uint32_t cmx    : 1;  /* Configure Max XRIs                   */
 164                uint32_t cerbm  : 1;  /* Configure Enhanced Receive Buf Mgmt  */
 165                uint32_t cinb   : 1;  /* Enable Interrupt Notification Block  */
 166                uint32_t chbs   : 1;  /* Cofigure Host Backing store          */
 167                uint32_t csah   : 1;  /* Configure Synchronous Abort Handling */
 168                uint32_t ccrp   : 1;  /* Config Command Ring Polling          */
 169                uint32_t cmv    : 1;  /* Configure Max VPIs                   */
 170                uint32_t cbg    : 1;  /* Configure BlockGuard                 */
 171                uint32_t rsvd2  : 3;  /* Reserved                             */
 172                uint32_t cdss   : 1;  /* Configure Data Security SLI          */
 173                uint32_t rsvd3  :19;  /* Reserved                             */
 174#endif
 175        } sli3Feat;
 176} lpfc_vpd_t;
 177
 178struct lpfc_scsi_buf;
 179
 180
 181/*
 182 * lpfc stat counters
 183 */
 184struct lpfc_stats {
 185        /* Statistics for ELS commands */
 186        uint32_t elsLogiCol;
 187        uint32_t elsRetryExceeded;
 188        uint32_t elsXmitRetry;
 189        uint32_t elsDelayRetry;
 190        uint32_t elsRcvDrop;
 191        uint32_t elsRcvFrame;
 192        uint32_t elsRcvRSCN;
 193        uint32_t elsRcvRNID;
 194        uint32_t elsRcvFARP;
 195        uint32_t elsRcvFARPR;
 196        uint32_t elsRcvFLOGI;
 197        uint32_t elsRcvPLOGI;
 198        uint32_t elsRcvADISC;
 199        uint32_t elsRcvPDISC;
 200        uint32_t elsRcvFAN;
 201        uint32_t elsRcvLOGO;
 202        uint32_t elsRcvPRLO;
 203        uint32_t elsRcvPRLI;
 204        uint32_t elsRcvLIRR;
 205        uint32_t elsRcvRLS;
 206        uint32_t elsRcvRPS;
 207        uint32_t elsRcvRPL;
 208        uint32_t elsRcvRRQ;
 209        uint32_t elsRcvRTV;
 210        uint32_t elsRcvECHO;
 211        uint32_t elsXmitFLOGI;
 212        uint32_t elsXmitFDISC;
 213        uint32_t elsXmitPLOGI;
 214        uint32_t elsXmitPRLI;
 215        uint32_t elsXmitADISC;
 216        uint32_t elsXmitLOGO;
 217        uint32_t elsXmitSCR;
 218        uint32_t elsXmitRNID;
 219        uint32_t elsXmitFARP;
 220        uint32_t elsXmitFARPR;
 221        uint32_t elsXmitACC;
 222        uint32_t elsXmitLSRJT;
 223
 224        uint32_t frameRcvBcast;
 225        uint32_t frameRcvMulti;
 226        uint32_t strayXmitCmpl;
 227        uint32_t frameXmitDelay;
 228        uint32_t xriCmdCmpl;
 229        uint32_t xriStatErr;
 230        uint32_t LinkUp;
 231        uint32_t LinkDown;
 232        uint32_t LinkMultiEvent;
 233        uint32_t NoRcvBuf;
 234        uint32_t fcpCmd;
 235        uint32_t fcpCmpl;
 236        uint32_t fcpRspErr;
 237        uint32_t fcpRemoteStop;
 238        uint32_t fcpPortRjt;
 239        uint32_t fcpPortBusy;
 240        uint32_t fcpError;
 241        uint32_t fcpLocalErr;
 242};
 243
 244enum sysfs_mbox_state {
 245        SMBOX_IDLE,
 246        SMBOX_WRITING,
 247        SMBOX_READING
 248};
 249
 250struct lpfc_sysfs_mbox {
 251        enum sysfs_mbox_state state;
 252        size_t                offset;
 253        struct lpfcMboxq *    mbox;
 254};
 255
 256struct lpfc_hba;
 257
 258
 259enum discovery_state {
 260        LPFC_VPORT_UNKNOWN     =  0,    /* vport state is unknown */
 261        LPFC_VPORT_FAILED      =  1,    /* vport has failed */
 262        LPFC_LOCAL_CFG_LINK    =  6,    /* local NPORT Id configured */
 263        LPFC_FLOGI             =  7,    /* FLOGI sent to Fabric */
 264        LPFC_FDISC             =  8,    /* FDISC sent for vport */
 265        LPFC_FABRIC_CFG_LINK   =  9,    /* Fabric assigned NPORT Id
 266                                         * configured */
 267        LPFC_NS_REG            =  10,   /* Register with NameServer */
 268        LPFC_NS_QRY            =  11,   /* Query NameServer for NPort ID list */
 269        LPFC_BUILD_DISC_LIST   =  12,   /* Build ADISC and PLOGI lists for
 270                                         * device authentication / discovery */
 271        LPFC_DISC_AUTH         =  13,   /* Processing ADISC list */
 272        LPFC_VPORT_READY       =  32,
 273};
 274
 275enum hba_state {
 276        LPFC_LINK_UNKNOWN    =   0,   /* HBA state is unknown */
 277        LPFC_WARM_START      =   1,   /* HBA state after selective reset */
 278        LPFC_INIT_START      =   2,   /* Initial state after board reset */
 279        LPFC_INIT_MBX_CMDS   =   3,   /* Initialize HBA with mbox commands */
 280        LPFC_LINK_DOWN       =   4,   /* HBA initialized, link is down */
 281        LPFC_LINK_UP         =   5,   /* Link is up  - issue READ_LA */
 282        LPFC_CLEAR_LA        =   6,   /* authentication cmplt - issue
 283                                       * CLEAR_LA */
 284        LPFC_HBA_READY       =  32,
 285        LPFC_HBA_ERROR       =  -1
 286};
 287
 288struct lpfc_vport {
 289        struct lpfc_hba *phba;
 290        struct list_head listentry;
 291        uint8_t port_type;
 292#define LPFC_PHYSICAL_PORT 1
 293#define LPFC_NPIV_PORT  2
 294#define LPFC_FABRIC_PORT 3
 295        enum discovery_state port_state;
 296
 297        uint16_t vpi;
 298        uint16_t vfi;
 299        uint8_t vpi_state;
 300#define LPFC_VPI_REGISTERED     0x1
 301
 302        uint32_t fc_flag;       /* FC flags */
 303/* Several of these flags are HBA centric and should be moved to
 304 * phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
 305 */
 306#define FC_PT2PT                0x1      /* pt2pt with no fabric */
 307#define FC_PT2PT_PLOGI          0x2      /* pt2pt initiate PLOGI */
 308#define FC_DISC_TMO             0x4      /* Discovery timer running */
 309#define FC_PUBLIC_LOOP          0x8      /* Public loop */
 310#define FC_LBIT                 0x10     /* LOGIN bit in loopinit set */
 311#define FC_RSCN_MODE            0x20     /* RSCN cmd rcv'ed */
 312#define FC_NLP_MORE             0x40     /* More node to process in node tbl */
 313#define FC_OFFLINE_MODE         0x80     /* Interface is offline for diag */
 314#define FC_FABRIC               0x100    /* We are fabric attached */
 315#define FC_VPORT_LOGO_RCVD      0x200    /* LOGO received on vport */
 316#define FC_RSCN_DISCOVERY       0x400    /* Auth all devices after RSCN */
 317#define FC_LOGO_RCVD_DID_CHNG   0x800    /* FDISC on phys port detect DID chng*/
 318#define FC_SCSI_SCAN_TMO        0x4000   /* scsi scan timer running */
 319#define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 320#define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 321#define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
 322#define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 323#define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 324#define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */
 325#define FC_VPORT_CVL_RCVD       0x400000 /* VLink failed due to CVL      */
 326#define FC_VFI_REGISTERED       0x800000 /* VFI is registered */
 327#define FC_FDISC_COMPLETED      0x1000000/* FDISC completed */
 328
 329        uint32_t ct_flags;
 330#define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
 331#define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
 332#define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
 333#define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
 334#define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
 335
 336        struct list_head fc_nodes;
 337
 338        /* Keep counters for the number of entries in each list. */
 339        uint16_t fc_plogi_cnt;
 340        uint16_t fc_adisc_cnt;
 341        uint16_t fc_reglogin_cnt;
 342        uint16_t fc_prli_cnt;
 343        uint16_t fc_unmap_cnt;
 344        uint16_t fc_map_cnt;
 345        uint16_t fc_npr_cnt;
 346        uint16_t fc_unused_cnt;
 347        struct serv_parm fc_sparam;     /* buffer for our service parameters */
 348
 349        uint32_t fc_myDID;      /* fibre channel S_ID */
 350        uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 351
 352        int32_t stopped;   /* HBA has not been restarted since last ERATT */
 353        uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 354
 355        uint32_t num_disc_nodes;        /*in addition to hba_state */
 356
 357        uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 358        uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 359        uint32_t fc_rscn_flush;         /* flag use of fc_rscn_id_list */
 360        struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 361        struct lpfc_name fc_nodename;   /* fc nodename */
 362        struct lpfc_name fc_portname;   /* fc portname */
 363
 364        struct lpfc_work_evt disc_timeout_evt;
 365
 366        struct timer_list fc_disctmo;   /* Discovery rescue timer */
 367        uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 368        uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 369
 370        spinlock_t work_port_lock;
 371        uint32_t work_port_events; /* Timeout to be handled  */
 372#define WORKER_DISC_TMO                0x1      /* vport: Discovery timeout */
 373#define WORKER_ELS_TMO                 0x2      /* vport: ELS timeout */
 374#define WORKER_FDMI_TMO                0x4      /* vport: FDMI timeout */
 375
 376#define WORKER_MBOX_TMO                0x100    /* hba: MBOX timeout */
 377#define WORKER_HB_TMO                  0x200    /* hba: Heart beat timeout */
 378#define WORKER_FABRIC_BLOCK_TMO        0x400    /* hba: fabric block timeout */
 379#define WORKER_RAMP_DOWN_QUEUE         0x800    /* hba: Decrease Q depth */
 380#define WORKER_RAMP_UP_QUEUE           0x1000   /* hba: Increase Q depth */
 381#define WORKER_SERVICE_TXQ             0x2000   /* hba: IOCBs on the txq */
 382
 383        struct timer_list fc_fdmitmo;
 384        struct timer_list els_tmofunc;
 385
 386        int unreg_vpi_cmpl;
 387
 388        uint8_t load_flag;
 389#define FC_LOADING              0x1     /* HBA in process of loading drvr */
 390#define FC_UNLOADING            0x2     /* HBA in process of unloading drvr */
 391        /* Vport Config Parameters */
 392        uint32_t cfg_scan_down;
 393        uint32_t cfg_lun_queue_depth;
 394        uint32_t cfg_nodev_tmo;
 395        uint32_t cfg_devloss_tmo;
 396        uint32_t cfg_restrict_login;
 397        uint32_t cfg_peer_port_login;
 398        uint32_t cfg_fcp_class;
 399        uint32_t cfg_use_adisc;
 400        uint32_t cfg_fdmi_on;
 401        uint32_t cfg_discovery_threads;
 402        uint32_t cfg_log_verbose;
 403        uint32_t cfg_max_luns;
 404        uint32_t cfg_enable_da_id;
 405        uint32_t cfg_max_scsicmpl_time;
 406        uint32_t cfg_tgt_queue_depth;
 407
 408        uint32_t dev_loss_tmo_changed;
 409
 410        struct fc_vport *fc_vport;
 411
 412#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 413        struct dentry *debug_disc_trc;
 414        struct dentry *debug_nodelist;
 415        struct dentry *vport_debugfs_root;
 416        struct lpfc_debugfs_trc *disc_trc;
 417        atomic_t disc_trc_cnt;
 418#endif
 419        uint8_t stat_data_enabled;
 420        uint8_t stat_data_blocked;
 421        struct list_head rcv_buffer_list;
 422        unsigned long rcv_buffer_time_stamp;
 423        uint32_t vport_flag;
 424#define STATIC_VPORT    1
 425};
 426
 427struct hbq_s {
 428        uint16_t entry_count;     /* Current number of HBQ slots */
 429        uint16_t buffer_count;    /* Current number of buffers posted */
 430        uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
 431        uint32_t hbqPutIdx;       /* HBQ slot to use */
 432        uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
 433        void    *hbq_virt;        /* Virtual ptr to this hbq */
 434        struct list_head hbq_buffer_list;  /* buffers assigned to this HBQ */
 435                                  /* Callback for HBQ buffer allocation */
 436        struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
 437                                  /* Callback for HBQ buffer free */
 438        void               (*hbq_free_buffer) (struct lpfc_hba *,
 439                                               struct hbq_dmabuf *);
 440};
 441
 442#define LPFC_MAX_HBQS  4
 443/* this matches the position in the lpfc_hbq_defs array */
 444#define LPFC_ELS_HBQ    0
 445#define LPFC_EXTRA_HBQ  1
 446
 447enum hba_temp_state {
 448        HBA_NORMAL_TEMP,
 449        HBA_OVER_TEMP
 450};
 451
 452enum intr_type_t {
 453        NONE = 0,
 454        INTx,
 455        MSI,
 456        MSIX,
 457};
 458
 459struct unsol_rcv_ct_ctx {
 460        uint32_t ctxt_id;
 461        uint32_t SID;
 462        uint32_t oxid;
 463        uint32_t flags;
 464#define UNSOL_VALID     0x00000001
 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
 484struct lpfc_hba {
 485        /* SCSI interface function jump table entries */
 486        int (*lpfc_new_scsi_buf)
 487                (struct lpfc_vport *, int);
 488        struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
 489                (struct lpfc_hba *, struct lpfc_nodelist *);
 490        int (*lpfc_scsi_prep_dma_buf)
 491                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 492        void (*lpfc_scsi_unprep_dma_buf)
 493                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 494        void (*lpfc_release_scsi_buf)
 495                (struct lpfc_hba *, struct lpfc_scsi_buf *);
 496        void (*lpfc_rampdown_queue_depth)
 497                (struct lpfc_hba *);
 498        void (*lpfc_scsi_prep_cmnd)
 499                (struct lpfc_vport *, struct lpfc_scsi_buf *,
 500                 struct lpfc_nodelist *);
 501        /* IOCB interface function jump table entries */
 502        int (*__lpfc_sli_issue_iocb)
 503                (struct lpfc_hba *, uint32_t,
 504                 struct lpfc_iocbq *, uint32_t);
 505        void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
 506                         struct lpfc_iocbq *);
 507        int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
 508
 509
 510        IOCB_t * (*lpfc_get_iocb_from_iocbq)
 511                (struct lpfc_iocbq *);
 512        void (*lpfc_scsi_cmd_iocb_cmpl)
 513                (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
 514
 515        /* MBOX interface function jump table entries */
 516        int (*lpfc_sli_issue_mbox)
 517                (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
 518        /* Slow-path IOCB process function jump table entries */
 519        void (*lpfc_sli_handle_slow_ring_event)
 520                (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 521                 uint32_t mask);
 522        /* INIT device interface function jump table entries */
 523        int (*lpfc_sli_hbq_to_firmware)
 524                (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
 525        int (*lpfc_sli_brdrestart)
 526                (struct lpfc_hba *);
 527        int (*lpfc_sli_brdready)
 528                (struct lpfc_hba *, uint32_t);
 529        void (*lpfc_handle_eratt)
 530                (struct lpfc_hba *);
 531        void (*lpfc_stop_port)
 532                (struct lpfc_hba *);
 533        int (*lpfc_hba_init_link)
 534                (struct lpfc_hba *, uint32_t);
 535        int (*lpfc_hba_down_link)
 536                (struct lpfc_hba *, uint32_t);
 537
 538        /* SLI4 specific HBA data structure */
 539        struct lpfc_sli4_hba sli4_hba;
 540
 541        struct lpfc_sli sli;
 542        uint8_t pci_dev_grp;    /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
 543        uint32_t sli_rev;               /* SLI2, SLI3, or SLI4 */
 544        uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 545#define LPFC_SLI3_HBQ_ENABLED           0x01
 546#define LPFC_SLI3_NPIV_ENABLED          0x02
 547#define LPFC_SLI3_VPORT_TEARDOWN        0x04
 548#define LPFC_SLI3_CRP_ENABLED           0x08
 549#define LPFC_SLI3_BG_ENABLED            0x20
 550#define LPFC_SLI3_DSS_ENABLED           0x40
 551        uint32_t iocb_cmd_size;
 552        uint32_t iocb_rsp_size;
 553
 554        enum hba_state link_state;
 555        uint32_t link_flag;     /* link state flags */
 556#define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 557                                        /* This flag is set while issuing */
 558                                        /* INIT_LINK mailbox command */
 559#define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 560#define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 561
 562        uint32_t hba_flag;      /* hba generic flags */
 563#define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 564#define DEFER_ERATT             0x2 /* Deferred error attention in progress */
 565#define HBA_FCOE_MODE           0x4 /* HBA function in FCoE Mode */
 566#define HBA_SP_QUEUE_EVT        0x8 /* Slow-path qevt posted to worker thread*/
 567#define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
 568#define FCP_XRI_ABORT_EVENT     0x20
 569#define ELS_XRI_ABORT_EVENT     0x40
 570#define ASYNC_EVENT             0x80
 571#define LINK_DISABLED           0x100 /* Link disabled by user */
 572#define FCF_TS_INPROG           0x200 /* FCF table scan in progress */
 573#define FCF_RR_INPROG           0x400 /* FCF roundrobin flogi in progress */
 574#define HBA_FIP_SUPPORT         0x800 /* FIP support in HBA */
 575#define HBA_AER_ENABLED         0x1000 /* AER enabled with HBA */
 576#define HBA_DEVLOSS_TMO         0x2000 /* HBA in devloss timeout */
 577#define HBA_RRQ_ACTIVE          0x4000 /* process the rrq active list */
 578        uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
 579        struct lpfc_dmabuf slim2p;
 580
 581        MAILBOX_t *mbox;
 582        uint32_t *mbox_ext;
 583        uint32_t ha_copy;
 584        struct _PCB *pcb;
 585        struct _IOCB *IOCBs;
 586
 587        struct lpfc_dmabuf hbqslimp;
 588
 589        uint16_t pci_cfg_value;
 590
 591        uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 592
 593        uint32_t fc_eventTag;   /* event tag for link attention */
 594        uint32_t link_events;
 595
 596        /* These fields used to be binfo */
 597        uint32_t fc_pref_DID;   /* preferred D_ID */
 598        uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 599        uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
 600        uint32_t fc_edtov;      /* E_D_TOV timer value */
 601        uint32_t fc_arbtov;     /* ARB_TOV timer value */
 602        uint32_t fc_ratov;      /* R_A_TOV timer value */
 603        uint32_t fc_rttov;      /* R_T_TOV timer value */
 604        uint32_t fc_altov;      /* AL_TOV timer value */
 605        uint32_t fc_crtov;      /* C_R_TOV timer value */
 606        uint32_t fc_citov;      /* C_I_TOV timer value */
 607
 608        struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 609        uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 610
 611        uint32_t lmt;
 612
 613        uint32_t fc_topology;   /* link topology, from LINK INIT */
 614
 615        struct lpfc_stats fc_stat;
 616
 617        struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 618        uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 619
 620        uint8_t  wwnn[8];
 621        uint8_t  wwpn[8];
 622        uint32_t RandomData[7];
 623
 624        /* HBA Config Parameters */
 625        uint32_t cfg_ack0;
 626        uint32_t cfg_enable_npiv;
 627        uint32_t cfg_enable_rrq;
 628        uint32_t cfg_topology;
 629        uint32_t cfg_link_speed;
 630        uint32_t cfg_cr_delay;
 631        uint32_t cfg_cr_count;
 632        uint32_t cfg_multi_ring_support;
 633        uint32_t cfg_multi_ring_rctl;
 634        uint32_t cfg_multi_ring_type;
 635        uint32_t cfg_poll;
 636        uint32_t cfg_poll_tmo;
 637        uint32_t cfg_use_msi;
 638        uint32_t cfg_fcp_imax;
 639        uint32_t cfg_fcp_wq_count;
 640        uint32_t cfg_fcp_eq_count;
 641        uint32_t cfg_sg_seg_cnt;
 642        uint32_t cfg_prot_sg_seg_cnt;
 643        uint32_t cfg_sg_dma_buf_size;
 644        uint64_t cfg_soft_wwnn;
 645        uint64_t cfg_soft_wwpn;
 646        uint32_t cfg_hba_queue_depth;
 647        uint32_t cfg_enable_hba_reset;
 648        uint32_t cfg_enable_hba_heartbeat;
 649        uint32_t cfg_enable_bg;
 650        uint32_t cfg_hostmem_hgp;
 651        uint32_t cfg_log_verbose;
 652        uint32_t cfg_aer_support;
 653        uint32_t cfg_iocb_cnt;
 654        uint32_t cfg_suppress_link_up;
 655#define LPFC_INITIALIZE_LINK              0     /* do normal init_link mbox */
 656#define LPFC_DELAY_INIT_LINK              1     /* layered driver hold off */
 657#define LPFC_DELAY_INIT_LINK_INDEFINITELY 2     /* wait, manual intervention */
 658
 659        lpfc_vpd_t vpd;         /* vital product data */
 660
 661        struct pci_dev *pcidev;
 662        struct list_head      work_list;
 663        uint32_t              work_ha;      /* Host Attention Bits for WT */
 664        uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 665        uint32_t              work_hs;      /* HS stored in case of ERRAT */
 666        uint32_t              work_status[2]; /* Extra status from SLIM */
 667
 668        wait_queue_head_t    work_waitq;
 669        struct task_struct   *worker_thread;
 670        unsigned long data_flags;
 671
 672        uint32_t hbq_in_use;            /* HBQs in use flag */
 673        struct list_head rb_pend_list;  /* Received buffers to be processed */
 674        uint32_t hbq_count;             /* Count of configured HBQs */
 675        struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 676
 677        uint32_t fcp_qidx;              /* next work queue to post work to */
 678
 679        unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 680        unsigned long pci_bar1_map;     /* Physical address for PCI BAR1 */
 681        unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 682        void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 683                                           PCI BAR0 */
 684        void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 685                                            PCI BAR2 */
 686
 687        void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 688        void __iomem *HAregaddr;        /* virtual address for host attn reg */
 689        void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 690        void __iomem *HSregaddr;        /* virtual address for host status
 691                                           reg */
 692        void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 693
 694        struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 695        struct lpfc_pgp   *port_gp;
 696        uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 697        uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 698
 699        int brd_no;                     /* FC board number */
 700
 701        char SerialNumber[32];          /* adapter Serial Number */
 702        char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 703        char ModelDesc[256];            /* Model Description */
 704        char ModelName[80];             /* Model Name */
 705        char ProgramType[256];          /* Program Type */
 706        char Port[20];                  /* Port No */
 707        uint8_t vpd_flag;               /* VPD data flag */
 708
 709#define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 710#define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 711#define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 712#define VPD_PORT            0x8         /* valid vpd port data */
 713#define VPD_MASK            0xf         /* mask for any vpd data */
 714
 715        uint8_t soft_wwn_enable;
 716
 717        struct timer_list fcp_poll_timer;
 718        struct timer_list eratt_poll;
 719
 720        /*
 721         * stat  counters
 722         */
 723        uint64_t fc4InputRequests;
 724        uint64_t fc4OutputRequests;
 725        uint64_t fc4ControlRequests;
 726        uint64_t bg_guard_err_cnt;
 727        uint64_t bg_apptag_err_cnt;
 728        uint64_t bg_reftag_err_cnt;
 729
 730        struct lpfc_sysfs_mbox sysfs_mbox;
 731
 732        /* fastpath list. */
 733        spinlock_t scsi_buf_list_lock;
 734        struct list_head lpfc_scsi_buf_list;
 735        uint32_t total_scsi_bufs;
 736        struct list_head lpfc_iocb_list;
 737        uint32_t total_iocbq_bufs;
 738        struct list_head active_rrq_list;
 739        spinlock_t hbalock;
 740
 741        /* pci_mem_pools */
 742        struct pci_pool *lpfc_scsi_dma_buf_pool;
 743        struct pci_pool *lpfc_mbuf_pool;
 744        struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
 745        struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
 746        struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
 747        struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 748
 749        mempool_t *mbox_mem_pool;
 750        mempool_t *nlp_mem_pool;
 751        mempool_t *rrq_pool;
 752
 753        struct fc_host_statistics link_stats;
 754        enum intr_type_t intr_type;
 755        uint32_t intr_mode;
 756#define LPFC_INTR_ERROR 0xFFFFFFFF
 757        struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 758
 759        struct list_head port_list;
 760        struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 761        uint16_t max_vpi;               /* Maximum virtual nports */
 762#define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 763        uint16_t max_vports;            /*
 764                                         * For IOV HBAs max_vpi can change
 765                                         * after a reset. max_vports is max
 766                                         * number of vports present. This can
 767                                         * be greater than max_vpi.
 768                                         */
 769        uint16_t vpi_base;
 770        uint16_t vfi_base;
 771        unsigned long *vpi_bmask;       /* vpi allocation table */
 772
 773        /* Data structure used by fabric iocb scheduler */
 774        struct list_head fabric_iocb_list;
 775        atomic_t fabric_iocb_count;
 776        struct timer_list fabric_block_timer;
 777        unsigned long bit_flags;
 778#define FABRIC_COMANDS_BLOCKED  0
 779        atomic_t num_rsrc_err;
 780        atomic_t num_cmd_success;
 781        unsigned long last_rsrc_error_time;
 782        unsigned long last_ramp_down_time;
 783        unsigned long last_ramp_up_time;
 784#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 785        struct dentry *hba_debugfs_root;
 786        atomic_t debugfs_vport_count;
 787        struct dentry *debug_hbqinfo;
 788        struct dentry *debug_dumpHostSlim;
 789        struct dentry *debug_dumpHBASlim;
 790        struct dentry *debug_dumpData;   /* BlockGuard BPL*/
 791        struct dentry *debug_dumpDif;    /* BlockGuard BPL*/
 792        struct dentry *debug_slow_ring_trc;
 793        struct lpfc_debugfs_trc *slow_ring_trc;
 794        atomic_t slow_ring_trc_cnt;
 795#endif
 796
 797        /* Used for deferred freeing of ELS data buffers */
 798        struct list_head elsbuf;
 799        int elsbuf_cnt;
 800        int elsbuf_prev_cnt;
 801
 802        uint8_t temp_sensor_support;
 803        /* Fields used for heart beat. */
 804        unsigned long last_completion_time;
 805        unsigned long skipped_hb;
 806        struct timer_list hb_tmofunc;
 807        uint8_t hb_outstanding;
 808        struct timer_list rrq_tmr;
 809        enum hba_temp_state over_temp_state;
 810        /* ndlp reference management */
 811        spinlock_t ndlp_lock;
 812        /*
 813         * Following bit will be set for all buffer tags which are not
 814         * associated with any HBQ.
 815         */
 816#define QUE_BUFTAG_BIT  (1<<31)
 817        uint32_t buffer_tag_count;
 818        int wait_4_mlo_maint_flg;
 819        wait_queue_head_t wait_4_mlo_m_q;
 820        /* data structure used for latency data collection */
 821#define LPFC_NO_BUCKET     0
 822#define LPFC_LINEAR_BUCKET 1
 823#define LPFC_POWER2_BUCKET 2
 824        uint8_t  bucket_type;
 825        uint32_t bucket_base;
 826        uint32_t bucket_step;
 827
 828/* Maximum number of events that can be outstanding at any time*/
 829#define LPFC_MAX_EVT_COUNT 512
 830        atomic_t fast_event_count;
 831        uint32_t fcoe_eventtag;
 832        uint32_t fcoe_eventtag_at_fcf_scan;
 833        struct lpfc_fcf fcf;
 834        uint8_t fc_map[3];
 835        uint8_t valid_vlan;
 836        uint16_t vlan_id;
 837        struct list_head fcf_conn_rec_list;
 838
 839        spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
 840        struct list_head ct_ev_waiters;
 841        struct unsol_rcv_ct_ctx ct_ctx[64];
 842        uint32_t ctx_idx;
 843
 844        uint8_t menlo_flag;     /* menlo generic flags */
 845#define HBA_MENLO_SUPPORT       0x1 /* HBA supports menlo commands */
 846        uint32_t iocb_cnt;
 847        uint32_t iocb_max;
 848        atomic_t sdev_cnt;
 849        uint8_t fips_spec_rev;
 850        uint8_t fips_level;
 851};
 852
 853static inline struct Scsi_Host *
 854lpfc_shost_from_vport(struct lpfc_vport *vport)
 855{
 856        return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 857}
 858
 859static inline void
 860lpfc_set_loopback_flag(struct lpfc_hba *phba)
 861{
 862        if (phba->cfg_topology == FLAGS_LOCAL_LB)
 863                phba->link_flag |= LS_LOOPBACK_MODE;
 864        else
 865                phba->link_flag &= ~LS_LOOPBACK_MODE;
 866}
 867
 868static inline int
 869lpfc_is_link_up(struct lpfc_hba *phba)
 870{
 871        return  phba->link_state == LPFC_LINK_UP ||
 872                phba->link_state == LPFC_CLEAR_LA ||
 873                phba->link_state == LPFC_HBA_READY;
 874}
 875
 876static inline void
 877lpfc_worker_wake_up(struct lpfc_hba *phba)
 878{
 879        /* Set the lpfc data pending flag */
 880        set_bit(LPFC_DATA_READY, &phba->data_flags);
 881
 882        /* Wake up worker thread */
 883        wake_up(&phba->work_waitq);
 884        return;
 885}
 886
 887static inline void
 888lpfc_sli_read_hs(struct lpfc_hba *phba)
 889{
 890        /*
 891         * There was a link/board error. Read the status register to retrieve
 892         * the error event and process it.
 893         */
 894        phba->sli.slistat.err_attn_event++;
 895
 896        /* Save status info */
 897        phba->work_hs = readl(phba->HSregaddr);
 898        phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
 899        phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
 900
 901        /* Clear chip Host Attention error bit */
 902        writel(HA_ERATT, phba->HAregaddr);
 903        readl(phba->HAregaddr); /* flush */
 904        phba->pport->stopped = 1;
 905
 906        return;
 907}
 908
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.