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) 2004-2007 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 struct lpfc_sli2_slim;
  23
  24
  25 #define LPFC_MAX_TARGET         256     /* max number of targets supported */
  26 #define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els
  27                                            requests */
  28 #define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
  29                                            the NameServer  before giving up. */
  30 #define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
  31 #define LPFC_SG_SEG_CNT         64      /* sg element count per scsi cmnd */
  32 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  33 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
  34
  35 /* Define macros for 64 bit support */
  36 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  37 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  38 #define getPaddr(high, low)  ((dma_addr_t)( \
  39                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  40 /* Provide maximum configuration definitions. */
  41 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  42 #define FC_MAX_ADPTMSG          64
  43
  44 #define MAX_HBAEVT      32
  45
  46 enum lpfc_polling_flags {
  47         ENABLE_FCP_RING_POLLING = 0x1,
  48         DISABLE_FCP_RING_INT    = 0x2
  49 };
  50
  51 /* Provide DMA memory definitions the driver uses per port instance. */
  52 struct lpfc_dmabuf {
  53         struct list_head list;
  54         void *virt;             /* virtual address ptr */
  55         dma_addr_t phys;        /* mapped address */
  56 };
  57
  58 struct lpfc_dma_pool {
  59         struct lpfc_dmabuf   *elements;
  60         uint32_t    max_count;
  61         uint32_t    current_count;
  62 };
  63
  64 /* Priority bit.  Set value to exceed low water mark in lpfc_mem. */
  65 #define MEM_PRI         0x100
  66
  67
  68 /****************************************************************************/
  69 /*      Device VPD save area                                                */
  70 /****************************************************************************/
  71 typedef struct lpfc_vpd {
  72         uint32_t status;        /* vpd status value */
  73         uint32_t length;        /* number of bytes actually returned */
  74         struct {
  75                 uint32_t rsvd1; /* Revision numbers */
  76                 uint32_t biuRev;
  77                 uint32_t smRev;
  78                 uint32_t smFwRev;
  79                 uint32_t endecRev;
  80                 uint16_t rBit;
  81                 uint8_t fcphHigh;
  82                 uint8_t fcphLow;
  83                 uint8_t feaLevelHigh;
  84                 uint8_t feaLevelLow;
  85                 uint32_t postKernRev;
  86                 uint32_t opFwRev;
  87                 uint8_t opFwName[16];
  88                 uint32_t sli1FwRev;
  89                 uint8_t sli1FwName[16];
  90                 uint32_t sli2FwRev;
  91                 uint8_t sli2FwName[16];
  92         } rev;
  93 } lpfc_vpd_t;
  94
  95 struct lpfc_scsi_buf;
  96
  97
  98 /*
  99  * lpfc stat counters
 100  */
 101 struct lpfc_stats {
 102         /* Statistics for ELS commands */
 103         uint32_t elsLogiCol;
 104         uint32_t elsRetryExceeded;
 105         uint32_t elsXmitRetry;
 106         uint32_t elsDelayRetry;
 107         uint32_t elsRcvDrop;
 108         uint32_t elsRcvFrame;
 109         uint32_t elsRcvRSCN;
 110         uint32_t elsRcvRNID;
 111         uint32_t elsRcvFARP;
 112         uint32_t elsRcvFARPR;
 113         uint32_t elsRcvFLOGI;
 114         uint32_t elsRcvPLOGI;
 115         uint32_t elsRcvADISC;
 116         uint32_t elsRcvPDISC;
 117         uint32_t elsRcvFAN;
 118         uint32_t elsRcvLOGO;
 119         uint32_t elsRcvPRLO;
 120         uint32_t elsRcvPRLI;
 121         uint32_t elsRcvLIRR;
 122         uint32_t elsRcvRPS;
 123         uint32_t elsRcvRPL;
 124         uint32_t elsXmitFLOGI;
 125         uint32_t elsXmitPLOGI;
 126         uint32_t elsXmitPRLI;
 127         uint32_t elsXmitADISC;
 128         uint32_t elsXmitLOGO;
 129         uint32_t elsXmitSCR;
 130         uint32_t elsXmitRNID;
 131         uint32_t elsXmitFARP;
 132         uint32_t elsXmitFARPR;
 133         uint32_t elsXmitACC;
 134         uint32_t elsXmitLSRJT;
 135
 136         uint32_t frameRcvBcast;
 137         uint32_t frameRcvMulti;
 138         uint32_t strayXmitCmpl;
 139         uint32_t frameXmitDelay;
 140         uint32_t xriCmdCmpl;
 141         uint32_t xriStatErr;
 142         uint32_t LinkUp;
 143         uint32_t LinkDown;
 144         uint32_t LinkMultiEvent;
 145         uint32_t NoRcvBuf;
 146         uint32_t fcpCmd;
 147         uint32_t fcpCmpl;
 148         uint32_t fcpRspErr;
 149         uint32_t fcpRemoteStop;
 150         uint32_t fcpPortRjt;
 151         uint32_t fcpPortBusy;
 152         uint32_t fcpError;
 153         uint32_t fcpLocalErr;
 154 };
 155
 156 enum sysfs_mbox_state {
 157         SMBOX_IDLE,
 158         SMBOX_WRITING,
 159         SMBOX_READING
 160 };
 161
 162 struct lpfc_sysfs_mbox {
 163         enum sysfs_mbox_state state;
 164         size_t                offset;
 165         struct lpfcMboxq *    mbox;
 166 };
 167
 168 struct lpfc_hba {
 169         struct lpfc_sli sli;
 170         struct lpfc_sli2_slim *slim2p;
 171         dma_addr_t slim2p_mapping;
 172         uint16_t pci_cfg_value;
 173
 174         int32_t hba_state;
 175
 176 #define LPFC_STATE_UNKNOWN        0    /* HBA state is unknown */
 177 #define LPFC_WARM_START           1    /* HBA state after selective reset */
 178 #define LPFC_INIT_START           2    /* Initial state after board reset */
 179 #define LPFC_INIT_MBX_CMDS        3    /* Initialize HBA with mbox commands */
 180 #define LPFC_LINK_DOWN            4    /* HBA initialized, link is down */
 181 #define LPFC_LINK_UP              5    /* Link is up  - issue READ_LA */
 182 #define LPFC_LOCAL_CFG_LINK       6    /* local NPORT Id configured */
 183 #define LPFC_FLOGI                7    /* FLOGI sent to Fabric */
 184 #define LPFC_FABRIC_CFG_LINK      8    /* Fabric assigned NPORT Id
 185                                            configured */
 186 #define LPFC_NS_REG               9     /* Register with NameServer */
 187 #define LPFC_NS_QRY               10    /* Query NameServer for NPort ID list */
 188 #define LPFC_BUILD_DISC_LIST      11    /* Build ADISC and PLOGI lists for
 189                                          * device authentication / discovery */
 190 #define LPFC_DISC_AUTH            12    /* Processing ADISC list */
 191 #define LPFC_CLEAR_LA             13    /* authentication cmplt - issue
 192                                            CLEAR_LA */
 193 #define LPFC_HBA_READY            32
 194 #define LPFC_HBA_ERROR            -1
 195
 196         int32_t stopped;   /* HBA has not been restarted since last ERATT */
 197         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 198
 199         uint32_t fc_eventTag;   /* event tag for link attention */
 200         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 201
 202         uint32_t num_disc_nodes;        /*in addition to hba_state */
 203
 204         struct timer_list fc_estabtmo;  /* link establishment timer */
 205         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 206         struct timer_list fc_fdmitmo;   /* fdmi timer */
 207         /* These fields used to be binfo */
 208         struct lpfc_name fc_nodename;   /* fc nodename */
 209         struct lpfc_name fc_portname;   /* fc portname */
 210         uint32_t fc_pref_DID;   /* preferred D_ID */
 211         uint8_t fc_pref_ALPA;   /* preferred AL_PA */
 212         uint32_t fc_edtov;      /* E_D_TOV timer value */
 213         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 214         uint32_t fc_ratov;      /* R_A_TOV timer value */
 215         uint32_t fc_rttov;      /* R_T_TOV timer value */
 216         uint32_t fc_altov;      /* AL_TOV timer value */
 217         uint32_t fc_crtov;      /* C_R_TOV timer value */
 218         uint32_t fc_citov;      /* C_I_TOV timer value */
 219         uint32_t fc_myDID;      /* fibre channel S_ID */
 220         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 221
 222         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 223         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 224         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 225
 226         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 227         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 228         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 229         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 230         uint32_t lmt;
 231         uint32_t fc_flag;       /* FC flags */
 232 #define FC_PT2PT                0x1     /* pt2pt with no fabric */
 233 #define FC_PT2PT_PLOGI          0x2     /* pt2pt initiate PLOGI */
 234 #define FC_DISC_TMO             0x4     /* Discovery timer running */
 235 #define FC_PUBLIC_LOOP          0x8     /* Public loop */
 236 #define FC_LBIT                 0x10    /* LOGIN bit in loopinit set */
 237 #define FC_RSCN_MODE            0x20    /* RSCN cmd rcv'ed */
 238 #define FC_NLP_MORE             0x40    /* More node to process in node tbl */
 239 #define FC_OFFLINE_MODE         0x80    /* Interface is offline for diag */
 240 #define FC_FABRIC               0x100   /* We are fabric attached */
 241 #define FC_ESTABLISH_LINK       0x200   /* Reestablish Link */
 242 #define FC_RSCN_DISCOVERY       0x400   /* Authenticate all devices after RSCN*/
 243 #define FC_BLOCK_MGMT_IO        0x800   /* Don't allow mgmt mbx or iocb cmds */
 244 #define FC_LOADING              0x1000  /* HBA in process of loading drvr */
 245 #define FC_UNLOADING            0x2000  /* HBA in process of unloading drvr */
 246 #define FC_SCSI_SCAN_TMO        0x4000  /* scsi scan timer running */
 247 #define FC_ABORT_DISCOVERY      0x8000  /* we want to abort discovery */
 248 #define FC_NDISC_ACTIVE         0x10000 /* NPort discovery active */
 249 #define FC_BYPASSED_MODE        0x20000 /* NPort is in bypassed mode */
 250 #define FC_LOOPBACK_MODE        0x40000 /* NPort is in Loopback mode */
 251                                         /* This flag is set while issuing */
 252                                         /* INIT_LINK mailbox command */
 253 #define FC_IGNORE_ERATT         0x80000 /* intr handler should ignore ERATT */
 254
 255         uint32_t fc_topology;   /* link topology, from LINK INIT */
 256
 257         struct lpfc_stats fc_stat;
 258
 259         struct list_head fc_nodes;
 260
 261         /* Keep counters for the number of entries in each list. */
 262         uint16_t fc_plogi_cnt;
 263         uint16_t fc_adisc_cnt;
 264         uint16_t fc_reglogin_cnt;
 265         uint16_t fc_prli_cnt;
 266         uint16_t fc_unmap_cnt;
 267         uint16_t fc_map_cnt;
 268         uint16_t fc_npr_cnt;
 269         uint16_t fc_unused_cnt;
 270         struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
 271         uint32_t nport_event_cnt;       /* timestamp for nlplist entry */
 272
 273         uint32_t wwnn[2];
 274         uint32_t RandomData[7];
 275
 276         uint32_t cfg_log_verbose;
 277         uint32_t cfg_lun_queue_depth;
 278         uint32_t cfg_nodev_tmo;
 279         uint32_t cfg_devloss_tmo;
 280         uint32_t cfg_hba_queue_depth;
 281         uint32_t cfg_fcp_class;
 282         uint32_t cfg_use_adisc;
 283         uint32_t cfg_ack0;
 284         uint32_t cfg_topology;
 285         uint32_t cfg_scan_down;
 286         uint32_t cfg_link_speed;
 287         uint32_t cfg_cr_delay;
 288         uint32_t cfg_cr_count;
 289         uint32_t cfg_multi_ring_support;
 290         uint32_t cfg_multi_ring_rctl;
 291         uint32_t cfg_multi_ring_type;
 292         uint32_t cfg_fdmi_on;
 293         uint32_t cfg_discovery_threads;
 294         uint32_t cfg_max_luns;
 295         uint32_t cfg_poll;
 296         uint32_t cfg_poll_tmo;
 297         uint32_t cfg_use_msi;
 298         uint32_t cfg_sg_seg_cnt;
 299         uint32_t cfg_sg_dma_buf_size;
 300         uint64_t cfg_soft_wwnn;
 301         uint64_t cfg_soft_wwpn;
 302
 303         uint32_t dev_loss_tmo_changed;
 304
 305         lpfc_vpd_t vpd;         /* vital product data */
 306
 307         struct Scsi_Host *host;
 308         struct pci_dev *pcidev;
 309         struct list_head      work_list;
 310         uint32_t              work_ha;      /* Host Attention Bits for WT */
 311         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 312         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 313         uint32_t              work_status[2]; /* Extra status from SLIM */
 314         uint32_t              work_hba_events; /* Timeout to be handled  */
 315 #define WORKER_DISC_TMO                0x1      /* Discovery timeout */
 316 #define WORKER_ELS_TMO                 0x2      /* ELS timeout */
 317 #define WORKER_MBOX_TMO                0x4      /* MBOX timeout */
 318 #define WORKER_FDMI_TMO                0x8      /* FDMI timeout */
 319
 320         wait_queue_head_t    *work_wait;
 321         struct task_struct   *worker_thread;
 322
 323         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 324         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 325         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 326                                            PCI BAR0 */
 327         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 328                                             PCI BAR2 */
 329
 330         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 331         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 332         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 333         void __iomem *HSregaddr;        /* virtual address for host status
 334                                            reg */
 335         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 336
 337         int brd_no;                     /* FC board number */
 338
 339         char SerialNumber[32];          /* adapter Serial Number */
 340         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 341         char ModelDesc[256];            /* Model Description */
 342         char ModelName[80];             /* Model Name */
 343         char ProgramType[256];          /* Program Type */
 344         char Port[20];                  /* Port No */
 345         uint8_t vpd_flag;               /* VPD data flag */
 346
 347 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 348 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 349 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 350 #define VPD_PORT            0x8         /* valid vpd port data */
 351 #define VPD_MASK            0xf         /* mask for any vpd data */
 352
 353         uint8_t soft_wwn_enable;
 354
 355         struct timer_list fcp_poll_timer;
 356         struct timer_list els_tmofunc;
 357
 358         /*
 359          * stat  counters
 360          */
 361         uint64_t fc4InputRequests;
 362         uint64_t fc4OutputRequests;
 363         uint64_t fc4ControlRequests;
 364
 365         struct lpfc_sysfs_mbox sysfs_mbox;
 366
 367         /* fastpath list. */
 368         spinlock_t scsi_buf_list_lock;
 369         struct list_head lpfc_scsi_buf_list;
 370         uint32_t total_scsi_bufs;
 371         struct list_head lpfc_iocb_list;
 372         uint32_t total_iocbq_bufs;
 373
 374         /* pci_mem_pools */
 375         struct pci_pool *lpfc_scsi_dma_buf_pool;
 376         struct pci_pool *lpfc_mbuf_pool;
 377         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 378
 379         mempool_t *mbox_mem_pool;
 380         mempool_t *nlp_mem_pool;
 381
 382         struct fc_host_statistics link_stats;
 383 };
 384
 385 static inline void
 386 lpfc_set_loopback_flag(struct lpfc_hba *phba) {
 387         if (phba->cfg_topology == FLAGS_LOCAL_LB)
 388                 phba->fc_flag |= FC_LOOPBACK_MODE;
 389         else
 390                 phba->fc_flag &= ~FC_LOOPBACK_MODE;
 391 }
 392
 393 struct rnidrsp {
 394         void *buf;
 395         uint32_t uniqueid;
 396         struct list_head list;
 397         uint32_t data;
 398 };
 399
 400 #define FC_REG_DUMP_EVENT       0x10    /* Register for Dump events */