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 struct 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
  91 enum 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. */
  97 struct 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
 104 struct lpfc_dma_pool {
 105         struct lpfc_dmabuf   *elements;
 106         uint32_t    max_count;
 107         uint32_t    current_count;
 108 };
 109
 110 struct 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 /****************************************************************************/
 126 typedef 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
 179 struct lpfc_scsi_buf;
 180
 181
 182 /*
 183  * lpfc stat counters
 184  */
 185 struct 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
 245 enum sysfs_mbox_state {
 246         SMBOX_IDLE,
 247         SMBOX_WRITING,
 248         SMBOX_READING
 249 };
 250
 251 struct lpfc_sysfs_mbox {
 252         enum sysfs_mbox_state state;
 253         size_t                offset;
 254         struct lpfcMboxq *    mbox;
 255 };
 256
 257 struct lpfc_hba;
 258
 259
 260 enum 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
 276 enum 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
 289 struct 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
 433 struct 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
 453 enum hba_temp_state {
 454         HBA_NORMAL_TEMP,
 455         HBA_OVER_TEMP
 456 };
 457
 458 enum intr_type_t {
 459         NONE = 0,
 460         INTx,
 461         MSI,
 462         MSIX,
 463 };
 464
 465 struct 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
 490 struct lpfc_hba {
 491         /* SCSI interface function jump table entries */
 492         int (*lpfc_new_scsi_buf)
 493                 (struct lpfc_vport *, int);
 494         struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
 495                 (struct lpfc_hba *, struct lpfc_nodelist *);
 496         int (*lpfc_scsi_prep_dma_buf)
 497                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 498         void (*lpfc_scsi_unprep_dma_buf)
 499                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 500         void (*lpfc_release_scsi_buf)
 501                 (struct lpfc_hba *, struct lpfc_scsi_buf *);
 502         void (*lpfc_rampdown_queue_depth)
 503                 (struct lpfc_hba *);
 504         void (*lpfc_scsi_prep_cmnd)
 505                 (struct lpfc_vport *, struct lpfc_scsi_buf *,
 506                  struct lpfc_nodelist *);
 507         /* IOCB interface function jump table entries */
 508         int (*__lpfc_sli_issue_iocb)
 509                 (struct lpfc_hba *, uint32_t,
 510                  struct lpfc_iocbq *, uint32_t);
 511         void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
 512                          struct lpfc_iocbq *);
 513         int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
 514
 515
 516         IOCB_t * (*lpfc_get_iocb_from_iocbq)
 517                 (struct lpfc_iocbq *);
 518         void (*lpfc_scsi_cmd_iocb_cmpl)
 519                 (struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
 520
 521         /* MBOX interface function jump table entries */
 522         int (*lpfc_sli_issue_mbox)
 523                 (struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
 524         /* Slow-path IOCB process function jump table entries */
 525         void (*lpfc_sli_handle_slow_ring_event)
 526                 (struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 527                  uint32_t mask);
 528         /* INIT device interface function jump table entries */
 529         int (*lpfc_sli_hbq_to_firmware)
 530                 (struct lpfc_hba *, uint32_t, struct hbq_dmabuf *);
 531         int (*lpfc_sli_brdrestart)
 532                 (struct lpfc_hba *);
 533         int (*lpfc_sli_brdready)
 534                 (struct lpfc_hba *, uint32_t);
 535         void (*lpfc_handle_eratt)
 536                 (struct lpfc_hba *);
 537         void (*lpfc_stop_port)
 538                 (struct lpfc_hba *);
 539         int (*lpfc_hba_init_link)
 540                 (struct lpfc_hba *, uint32_t);
 541         int (*lpfc_hba_down_link)
 542                 (struct lpfc_hba *, uint32_t);
 543         int (*lpfc_selective_reset)
 544                 (struct lpfc_hba *);
 545
 546         /* SLI4 specific HBA data structure */
 547         struct lpfc_sli4_hba sli4_hba;
 548
 549         struct lpfc_sli sli;
 550         uint8_t pci_dev_grp;    /* lpfc PCI dev group: 0x0, 0x1, 0x2,... */
 551         uint32_t sli_rev;               /* SLI2, SLI3, or SLI4 */
 552         uint32_t sli3_options;          /* Mask of enabled SLI3 options */
 553 #define LPFC_SLI3_HBQ_ENABLED           0x01
 554 #define LPFC_SLI3_NPIV_ENABLED          0x02
 555 #define LPFC_SLI3_VPORT_TEARDOWN        0x04
 556 #define LPFC_SLI3_CRP_ENABLED           0x08
 557 #define LPFC_SLI3_BG_ENABLED            0x20
 558 #define LPFC_SLI3_DSS_ENABLED           0x40
 559 #define LPFC_SLI4_PERFH_ENABLED         0x80
 560 #define LPFC_SLI4_PHWQ_ENABLED          0x100
 561         uint32_t iocb_cmd_size;
 562         uint32_t iocb_rsp_size;
 563
 564         enum hba_state link_state;
 565         uint32_t link_flag;     /* link state flags */
 566 #define LS_LOOPBACK_MODE      0x1       /* NPort is in Loopback mode */
 567                                         /* This flag is set while issuing */
 568                                         /* INIT_LINK mailbox command */
 569 #define LS_NPIV_FAB_SUPPORTED 0x2       /* Fabric supports NPIV */
 570 #define LS_IGNORE_ERATT       0x4       /* intr handler should ignore ERATT */
 571
 572         uint32_t hba_flag;      /* hba generic flags */
 573 #define HBA_ERATT_HANDLED       0x1 /* This flag is set when eratt handled */
 574 #define DEFER_ERATT             0x2 /* Deferred error attention in progress */
 575 #define HBA_FCOE_MODE           0x4 /* HBA function in FCoE Mode */
 576 #define HBA_SP_QUEUE_EVT        0x8 /* Slow-path qevt posted to worker thread*/
 577 #define HBA_POST_RECEIVE_BUFFER 0x10 /* Rcv buffers need to be posted */
 578 #define FCP_XRI_ABORT_EVENT     0x20
 579 #define ELS_XRI_ABORT_EVENT     0x40
 580 #define ASYNC_EVENT             0x80
 581 #define LINK_DISABLED           0x100 /* Link disabled by user */
 582 #define FCF_TS_INPROG           0x200 /* FCF table scan in progress */
 583 #define FCF_RR_INPROG           0x400 /* FCF roundrobin flogi in progress */
 584 #define HBA_FIP_SUPPORT         0x800 /* FIP support in HBA */
 585 #define HBA_AER_ENABLED         0x1000 /* AER enabled with HBA */
 586 #define HBA_DEVLOSS_TMO         0x2000 /* HBA in devloss timeout */
 587 #define HBA_RRQ_ACTIVE          0x4000 /* process the rrq active list */
 588         uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
 589         struct lpfc_dmabuf slim2p;
 590
 591         MAILBOX_t *mbox;
 592         uint32_t *mbox_ext;
 593         uint32_t ha_copy;
 594         struct _PCB *pcb;
 595         struct _IOCB *IOCBs;
 596
 597         struct lpfc_dmabuf hbqslimp;
 598
 599         uint16_t pci_cfg_value;
 600
 601         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 602
 603         uint32_t fc_eventTag;   /* event tag for link attention */
 604         uint32_t link_events;
 605
 606         /* These fields used to be binfo */
 607         uint32_t fc_pref_DID;   /* preferred D_ID */
 608         uint8_t  fc_pref_ALPA;  /* preferred AL_PA */
 609         uint32_t fc_edtovResol; /* E_D_TOV timer resolution */
 610         uint32_t fc_edtov;      /* E_D_TOV timer value */
 611         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 612         uint32_t fc_ratov;      /* R_A_TOV timer value */
 613         uint32_t fc_rttov;      /* R_T_TOV timer value */
 614         uint32_t fc_altov;      /* AL_TOV timer value */
 615         uint32_t fc_crtov;      /* C_R_TOV timer value */
 616         uint32_t fc_citov;      /* C_I_TOV timer value */
 617
 618         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 619         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 620
 621         uint32_t lmt;
 622
 623         uint32_t fc_topology;   /* link topology, from LINK INIT */
 624
 625         struct lpfc_stats fc_stat;
 626
 627         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 628         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 629
 630         uint8_t  wwnn[8];
 631         uint8_t  wwpn[8];
 632         uint32_t RandomData[7];
 633
 634         /* HBA Config Parameters */
 635         uint32_t cfg_ack0;
 636         uint32_t cfg_enable_npiv;
 637         uint32_t cfg_enable_rrq;
 638         uint32_t cfg_topology;
 639         uint32_t cfg_link_speed;
 640         uint32_t cfg_cr_delay;
 641         uint32_t cfg_cr_count;
 642         uint32_t cfg_multi_ring_support;
 643         uint32_t cfg_multi_ring_rctl;
 644         uint32_t cfg_multi_ring_type;
 645         uint32_t cfg_poll;
 646         uint32_t cfg_poll_tmo;
 647         uint32_t cfg_use_msi;
 648         uint32_t cfg_fcp_imax;
 649         uint32_t cfg_fcp_wq_count;
 650         uint32_t cfg_fcp_eq_count;
 651         uint32_t cfg_sg_seg_cnt;
 652         uint32_t cfg_prot_sg_seg_cnt;
 653         uint32_t cfg_sg_dma_buf_size;
 654         uint64_t cfg_soft_wwnn;
 655         uint64_t cfg_soft_wwpn;
 656         uint32_t cfg_hba_queue_depth;
 657         uint32_t cfg_enable_hba_reset;
 658         uint32_t cfg_enable_hba_heartbeat;
 659         uint32_t cfg_enable_bg;
 660         uint32_t cfg_hostmem_hgp;
 661         uint32_t cfg_log_verbose;
 662         uint32_t cfg_aer_support;
 663         uint32_t cfg_iocb_cnt;
 664         uint32_t cfg_suppress_link_up;
 665 #define LPFC_INITIALIZE_LINK              0     /* do normal init_link mbox */
 666 #define LPFC_DELAY_INIT_LINK              1     /* layered driver hold off */
 667 #define LPFC_DELAY_INIT_LINK_INDEFINITELY 2     /* wait, manual intervention */
 668         uint32_t cfg_enable_dss;
 669         lpfc_vpd_t vpd;         /* vital product data */
 670
 671         struct pci_dev *pcidev;
 672         struct list_head      work_list;
 673         uint32_t              work_ha;      /* Host Attention Bits for WT */
 674         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 675         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 676         uint32_t              work_status[2]; /* Extra status from SLIM */
 677
 678         wait_queue_head_t    work_waitq;
 679         struct task_struct   *worker_thread;
 680         unsigned long data_flags;
 681
 682         uint32_t hbq_in_use;            /* HBQs in use flag */
 683         struct list_head rb_pend_list;  /* Received buffers to be processed */
 684         uint32_t hbq_count;             /* Count of configured HBQs */
 685         struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies  */
 686
 687         uint32_t fcp_qidx;              /* next work queue to post work to */
 688
 689         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 690         unsigned long pci_bar1_map;     /* Physical address for PCI BAR1 */
 691         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 692         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 693                                            PCI BAR0 */
 694         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 695                                             PCI BAR2 */
 696
 697         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 698         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 699         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 700         void __iomem *HSregaddr;        /* virtual address for host status
 701                                            reg */
 702         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 703
 704         struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
 705         struct lpfc_pgp   *port_gp;
 706         uint32_t __iomem  *hbq_put;     /* Address in SLIM to HBQ put ptrs */
 707         uint32_t          *hbq_get;     /* Host mem address of HBQ get ptrs */
 708
 709         int brd_no;                     /* FC board number */
 710
 711         char SerialNumber[32];          /* adapter Serial Number */
 712         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 713         char ModelDesc[256];            /* Model Description */
 714         char ModelName[80];             /* Model Name */
 715         char ProgramType[256];          /* Program Type */
 716         char Port[20];                  /* Port No */
 717         uint8_t vpd_flag;               /* VPD data flag */
 718
 719 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 720 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 721 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 722 #define VPD_PORT            0x8         /* valid vpd port data */
 723 #define VPD_MASK            0xf         /* mask for any vpd data */
 724
 725         uint8_t soft_wwn_enable;
 726
 727         struct timer_list fcp_poll_timer;
 728         struct timer_list eratt_poll;
 729
 730         /*
 731          * stat  counters
 732          */
 733         uint64_t fc4InputRequests;
 734         uint64_t fc4OutputRequests;
 735         uint64_t fc4ControlRequests;
 736         uint64_t bg_guard_err_cnt;
 737         uint64_t bg_apptag_err_cnt;
 738         uint64_t bg_reftag_err_cnt;
 739
 740         struct lpfc_sysfs_mbox sysfs_mbox;
 741
 742         /* fastpath list. */
 743         spinlock_t scsi_buf_list_lock;
 744         struct list_head lpfc_scsi_buf_list;
 745         uint32_t total_scsi_bufs;
 746         struct list_head lpfc_iocb_list;
 747         uint32_t total_iocbq_bufs;
 748         struct list_head active_rrq_list;
 749         spinlock_t hbalock;
 750
 751         /* pci_mem_pools */
 752         struct pci_pool *lpfc_scsi_dma_buf_pool;
 753         struct pci_pool *lpfc_mbuf_pool;
 754         struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */
 755         struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */
 756         struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */
 757         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 758
 759         mempool_t *mbox_mem_pool;
 760         mempool_t *nlp_mem_pool;
 761         mempool_t *rrq_pool;
 762
 763         struct fc_host_statistics link_stats;
 764         enum intr_type_t intr_type;
 765         uint32_t intr_mode;
 766 #define LPFC_INTR_ERROR 0xFFFFFFFF
 767         struct msix_entry msix_entries[LPFC_MSIX_VECTORS];
 768
 769         struct list_head port_list;
 770         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
 771         uint16_t max_vpi;               /* Maximum virtual nports */
 772 #define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
 773         uint16_t max_vports;            /*
 774                                          * For IOV HBAs max_vpi can change
 775                                          * after a reset. max_vports is max
 776                                          * number of vports present. This can
 777                                          * be greater than max_vpi.
 778                                          */
 779         uint16_t vpi_base;
 780         uint16_t vfi_base;
 781         unsigned long *vpi_bmask;       /* vpi allocation table */
 782
 783         /* Data structure used by fabric iocb scheduler */
 784         struct list_head fabric_iocb_list;
 785         atomic_t fabric_iocb_count;
 786         struct timer_list fabric_block_timer;
 787         unsigned long bit_flags;
 788 #define FABRIC_COMANDS_BLOCKED  0
 789         atomic_t num_rsrc_err;
 790         atomic_t num_cmd_success;
 791         unsigned long last_rsrc_error_time;
 792         unsigned long last_ramp_down_time;
 793         unsigned long last_ramp_up_time;
 794 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 795         struct dentry *hba_debugfs_root;
 796         atomic_t debugfs_vport_count;
 797         struct dentry *debug_hbqinfo;
 798         struct dentry *debug_dumpHostSlim;
 799         struct dentry *debug_dumpHBASlim;
 800         struct dentry *debug_dumpData;   /* BlockGuard BPL*/
 801         struct dentry *debug_dumpDif;    /* BlockGuard BPL*/
 802         struct dentry *debug_slow_ring_trc;
 803         struct lpfc_debugfs_trc *slow_ring_trc;
 804         atomic_t slow_ring_trc_cnt;
 805         /* iDiag debugfs sub-directory */
 806         struct dentry *idiag_root;
 807         struct dentry *idiag_pci_cfg;
 808         struct dentry *idiag_que_info;
 809         struct dentry *idiag_que_acc;
 810         struct dentry *idiag_drb_acc;
 811 #endif
 812
 813         /* Used for deferred freeing of ELS data buffers */
 814         struct list_head elsbuf;
 815         int elsbuf_cnt;
 816         int elsbuf_prev_cnt;
 817
 818         uint8_t temp_sensor_support;
 819         /* Fields used for heart beat. */
 820         unsigned long last_completion_time;
 821         unsigned long skipped_hb;
 822         struct timer_list hb_tmofunc;
 823         uint8_t hb_outstanding;
 824         struct timer_list rrq_tmr;
 825         enum hba_temp_state over_temp_state;
 826         /* ndlp reference management */
 827         spinlock_t ndlp_lock;
 828         /*
 829          * Following bit will be set for all buffer tags which are not
 830          * associated with any HBQ.
 831          */
 832 #define QUE_BUFTAG_BIT  (1<<31)
 833         uint32_t buffer_tag_count;
 834         int wait_4_mlo_maint_flg;
 835         wait_queue_head_t wait_4_mlo_m_q;
 836         /* data structure used for latency data collection */
 837 #define LPFC_NO_BUCKET     0
 838 #define LPFC_LINEAR_BUCKET 1
 839 #define LPFC_POWER2_BUCKET 2
 840         uint8_t  bucket_type;
 841         uint32_t bucket_base;
 842         uint32_t bucket_step;
 843
 844 /* Maximum number of events that can be outstanding at any time*/
 845 #define LPFC_MAX_EVT_COUNT 512
 846         atomic_t fast_event_count;
 847         uint32_t fcoe_eventtag;
 848         uint32_t fcoe_eventtag_at_fcf_scan;
 849         struct lpfc_fcf fcf;
 850         uint8_t fc_map[3];
 851         uint8_t valid_vlan;
 852         uint16_t vlan_id;
 853         struct list_head fcf_conn_rec_list;
 854
 855         spinlock_t ct_ev_lock; /* synchronize access to ct_ev_waiters */
 856         struct list_head ct_ev_waiters;
 857         struct unsol_rcv_ct_ctx ct_ctx[64];
 858         uint32_t ctx_idx;
 859
 860         uint8_t menlo_flag;     /* menlo generic flags */
 861 #define HBA_MENLO_SUPPORT       0x1 /* HBA supports menlo commands */
 862         uint32_t iocb_cnt;
 863         uint32_t iocb_max;
 864         atomic_t sdev_cnt;
 865         uint8_t fips_spec_rev;
 866         uint8_t fips_level;
 867 };
 868
 869 static inline struct Scsi_Host *
 870 lpfc_shost_from_vport(struct lpfc_vport *vport)
 871 {
 872         return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
 873 }
 874
 875 static inline void
 876 lpfc_set_loopback_flag(struct lpfc_hba *phba)
 877 {
 878         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 879                 phba->link_flag |= LS_LOOPBACK_MODE;
 880         else
 881                 phba->link_flag &= ~LS_LOOPBACK_MODE;
 882 }
 883
 884 static inline int
 885 lpfc_is_link_up(struct lpfc_hba *phba)
 886 {
 887         return  phba->link_state == LPFC_LINK_UP ||
 888                 phba->link_state == LPFC_CLEAR_LA ||
 889                 phba->link_state == LPFC_HBA_READY;
 890 }
 891
 892 static inline void
 893 lpfc_worker_wake_up(struct lpfc_hba *phba)
 894 {
 895         /* Set the lpfc data pending flag */
 896         set_bit(LPFC_DATA_READY, &phba->data_flags);
 897
 898         /* Wake up worker thread */
 899         wake_up(&phba->work_waitq);
 900         return;
 901 }
 902
 903 static inline int
 904 lpfc_readl(void __iomem *addr, uint32_t *data)
 905 {
 906         uint32_t temp;
 907         temp = readl(addr);
 908         if (temp == 0xffffffff)
 909                 return -EIO;
 910         *data = temp;
 911         return 0;
 912 }
 913
 914 static inline int
 915 lpfc_sli_read_hs(struct lpfc_hba *phba)
 916 {
 917         /*
 918          * There was a link/board error. Read the status register to retrieve
 919          * the error event and process it.
 920          */
 921         phba->sli.slistat.err_attn_event++;
 922
 923         /* Save status info and check for unplug error */
 924         if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
 925                 lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
 926                 lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
 927                 return -EIO;
 928         }
 929
 930         /* Clear chip Host Attention error bit */
 931         writel(HA_ERATT, phba->HAregaddr);
 932         readl(phba->HAregaddr); /* flush */
 933         phba->pport->stopped = 1;
 934
 935         return 0;
 936 }