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