drivers/scsi/lpfc/lpfc.h

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Enterprise Fibre Channel Host Bus Adapters.                     *
   4  * Refer to the README file included with this package for         *
   5  * driver version and adapter support.                             *
   6  * Copyright (C) 2004 Emulex Corporation.                          *
   7  * www.emulex.com                                                  *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of the GNU General Public License     *
  11  * as published by the Free Software Foundation; either version 2  *
  12  * of the License, or (at your option) any later version.          *
  13  *                                                                 *
  14  * This program is distributed in the hope that it will be useful, *
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
  17  * GNU General Public License for more details, a copy of which    *
  18  * can be found in the file COPYING included with this package.    *
  19  *******************************************************************/
  20
  21 /*
  22  * $Id: lpfc.h 1.167 2005/04/07 08:47:05EDT sf_support Exp  $
  23  */
  24
  25 struct lpfc_sli2_slim;
  26
  27 #define LPFC_MAX_TARGET         256     /* max targets supported */
  28 #define LPFC_MAX_DISC_THREADS   64      /* max outstanding discovery els req */
  29 #define LPFC_MAX_NS_RETRY       3       /* max NameServer retries */
  30
  31 #define LPFC_DFT_HBA_Q_DEPTH    2048    /* max cmds per hba */
  32 #define LPFC_LC_HBA_Q_DEPTH     1024    /* max cmds per low cost hba */
  33 #define LPFC_LP101_HBA_Q_DEPTH  128     /* max cmds per low cost hba */
  34
  35 #define LPFC_CMD_PER_LUN        30      /* max outstanding cmds per lun */
  36 #define LPFC_SG_SEG_CNT         64      /* sg element count per scsi cmnd */
  37 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
  38
  39 /* Define macros for 64 bit support */
  40 #define putPaddrLow(addr)    ((uint32_t) (0xffffffff & (u64)(addr)))
  41 #define putPaddrHigh(addr)   ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
  42 #define getPaddr(high, low)  ((dma_addr_t)( \
  43                              (( (u64)(high)<<16 ) << 16)|( (u64)(low))))
  44 /* Provide maximum configuration definitions. */
  45 #define LPFC_DRVR_TIMEOUT       16      /* driver iocb timeout value in sec */
  46 #define MAX_FCP_TARGET          256     /* max num of FCP targets supported */
  47 #define FC_MAX_ADPTMSG          64
  48
  49 #define MAX_HBAEVT      32
  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 elsRcvRRQ;
 122         uint32_t elsXmitFLOGI;
 123         uint32_t elsXmitPLOGI;
 124         uint32_t elsXmitPRLI;
 125         uint32_t elsXmitADISC;
 126         uint32_t elsXmitLOGO;
 127         uint32_t elsXmitSCR;
 128         uint32_t elsXmitRNID;
 129         uint32_t elsXmitFARP;
 130         uint32_t elsXmitFARPR;
 131         uint32_t elsXmitACC;
 132         uint32_t elsXmitLSRJT;
 133
 134         uint32_t frameRcvBcast;
 135         uint32_t frameRcvMulti;
 136         uint32_t strayXmitCmpl;
 137         uint32_t frameXmitDelay;
 138         uint32_t xriCmdCmpl;
 139         uint32_t xriStatErr;
 140         uint32_t LinkUp;
 141         uint32_t LinkDown;
 142         uint32_t LinkMultiEvent;
 143         uint32_t NoRcvBuf;
 144         uint32_t fcpCmd;
 145         uint32_t fcpCmpl;
 146         uint32_t fcpRspErr;
 147         uint32_t fcpRemoteStop;
 148         uint32_t fcpPortRjt;
 149         uint32_t fcpPortBusy;
 150         uint32_t fcpError;
 151         uint32_t fcpLocalErr;
 152 };
 153
 154 enum sysfs_mbox_state {
 155         SMBOX_IDLE,
 156         SMBOX_WRITING,
 157         SMBOX_READING
 158 };
 159
 160 struct lpfc_sysfs_mbox {
 161         enum sysfs_mbox_state state;
 162         size_t                offset;
 163         struct lpfcMboxq *    mbox;
 164 };
 165
 166 struct lpfc_hba {
 167         struct list_head hba_list;      /* List of hbas/ports */
 168         struct lpfc_sli sli;
 169         struct lpfc_sli2_slim *slim2p;
 170         dma_addr_t slim2p_mapping;
 171         uint16_t pci_cfg_value;
 172
 173         uint32_t hba_state;
 174
 175 #define LPFC_INIT_START           1     /* Initial state after board reset */
 176 #define LPFC_INIT_MBX_CMDS        2     /* Initialize HBA with mbox commands */
 177 #define LPFC_LINK_DOWN            3     /* HBA initialized, link is down */
 178 #define LPFC_LINK_UP              4     /* Link is up  - issue READ_LA */
 179 #define LPFC_LOCAL_CFG_LINK       5     /* local NPORT Id configured */
 180 #define LPFC_FLOGI                6     /* FLOGI sent to Fabric */
 181 #define LPFC_FABRIC_CFG_LINK      7     /* Fabric assigned NPORT Id
 182                                            configured */
 183 #define LPFC_NS_REG               8     /* Register with NameServer */
 184 #define LPFC_NS_QRY               9     /* Query NameServer for NPort ID list */
 185 #define LPFC_BUILD_DISC_LIST      10    /* Build ADISC and PLOGI lists for
 186                                          * device authentication / discovery */
 187 #define LPFC_DISC_AUTH            11    /* Processing ADISC list */
 188 #define LPFC_CLEAR_LA             12    /* authentication cmplt - issue
 189                                            CLEAR_LA */
 190 #define LPFC_HBA_READY            32
 191 #define LPFC_HBA_ERROR            0xff
 192
 193         uint8_t fc_linkspeed;   /* Link speed after last READ_LA */
 194
 195         uint32_t fc_eventTag;   /* event tag for link attention */
 196         uint32_t fc_prli_sent;  /* cntr for outstanding PRLIs */
 197
 198         uint32_t num_disc_nodes;        /*in addition to hba_state */
 199
 200         struct timer_list fc_estabtmo;  /* link establishment timer */
 201         struct timer_list fc_disctmo;   /* Discovery rescue timer */
 202         struct timer_list fc_fdmitmo;   /* fdmi timer */
 203         /* These fields used to be binfo */
 204         struct lpfc_name fc_nodename;   /* fc nodename */
 205         struct lpfc_name fc_portname;   /* fc portname */
 206         uint32_t fc_pref_DID;   /* preferred D_ID */
 207         uint8_t fc_pref_ALPA;   /* preferred AL_PA */
 208         uint32_t fc_edtov;      /* E_D_TOV timer value */
 209         uint32_t fc_arbtov;     /* ARB_TOV timer value */
 210         uint32_t fc_ratov;      /* R_A_TOV timer value */
 211         uint32_t fc_rttov;      /* R_T_TOV timer value */
 212         uint32_t fc_altov;      /* AL_TOV timer value */
 213         uint32_t fc_crtov;      /* C_R_TOV timer value */
 214         uint32_t fc_citov;      /* C_I_TOV timer value */
 215         uint32_t fc_myDID;      /* fibre channel S_ID */
 216         uint32_t fc_prevDID;    /* previous fibre channel S_ID */
 217
 218         struct serv_parm fc_sparam;     /* buffer for our service parameters */
 219         struct serv_parm fc_fabparam;   /* fabric service parameters buffer */
 220         uint8_t alpa_map[128];  /* AL_PA map from READ_LA */
 221
 222         uint8_t fc_ns_retry;    /* retries for fabric nameserver */
 223         uint32_t fc_nlp_cnt;    /* outstanding NODELIST requests */
 224         uint32_t fc_rscn_id_cnt;        /* count of RSCNs payloads in list */
 225         struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
 226         uint32_t lmt;
 227         uint32_t fc_flag;       /* FC flags */
 228 #define FC_PT2PT                0x1     /* pt2pt with no fabric */
 229 #define FC_PT2PT_PLOGI          0x2     /* pt2pt initiate PLOGI */
 230 #define FC_DISC_TMO             0x4     /* Discovery timer running */
 231 #define FC_PUBLIC_LOOP          0x8     /* Public loop */
 232 #define FC_LBIT                 0x10    /* LOGIN bit in loopinit set */
 233 #define FC_RSCN_MODE            0x20    /* RSCN cmd rcv'ed */
 234 #define FC_NLP_MORE             0x40    /* More node to process in node tbl */
 235 #define FC_OFFLINE_MODE         0x80    /* Interface is offline for diag */
 236 #define FC_FABRIC               0x100   /* We are fabric attached */
 237 #define FC_ESTABLISH_LINK       0x200   /* Reestablish Link */
 238 #define FC_RSCN_DISCOVERY       0x400   /* Authenticate all devices after RSCN*/
 239 #define FC_LOADING              0x1000  /* HBA in process of loading drvr */
 240 #define FC_UNLOADING            0x2000  /* HBA in process of unloading drvr */
 241 #define FC_SCSI_SCAN_TMO        0x4000  /* scsi scan timer running */
 242 #define FC_ABORT_DISCOVERY      0x8000  /* we want to abort discovery */
 243 #define FC_NDISC_ACTIVE         0x10000 /* NPort discovery active */
 244
 245         uint32_t fc_topology;   /* link topology, from LINK INIT */
 246
 247         struct lpfc_stats fc_stat;
 248
 249         /* These are the head/tail pointers for the bind, plogi, adisc, unmap,
 250          *  and map lists.  Their counters are immediately following.
 251          */
 252         struct list_head fc_plogi_list;
 253         struct list_head fc_adisc_list;
 254         struct list_head fc_reglogin_list;
 255         struct list_head fc_prli_list;
 256         struct list_head fc_nlpunmap_list;
 257         struct list_head fc_nlpmap_list;
 258         struct list_head fc_npr_list;
 259         struct list_head fc_unused_list;
 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 #define LPFC_RPI_HASH_SIZE     64
 274 #define LPFC_RPI_HASH_FUNC(x)  ((x) & (0x3f))
 275         /* ptr to active D_ID / RPIs */
 276         struct lpfc_nodelist *fc_nlplookup[LPFC_RPI_HASH_SIZE];
 277         uint32_t wwnn[2];
 278         uint32_t RandomData[7];
 279
 280         uint32_t cfg_log_verbose;
 281         uint32_t cfg_lun_queue_depth;
 282         uint32_t cfg_nodev_tmo;
 283         uint32_t cfg_hba_queue_depth;
 284         uint32_t cfg_fcp_class;
 285         uint32_t cfg_use_adisc;
 286         uint32_t cfg_ack0;
 287         uint32_t cfg_topology;
 288         uint32_t cfg_scan_down;
 289         uint32_t cfg_link_speed;
 290         uint32_t cfg_cr_delay;
 291         uint32_t cfg_cr_count;
 292         uint32_t cfg_fdmi_on;
 293         uint32_t cfg_fcp_bind_method;
 294         uint32_t cfg_discovery_threads;
 295         uint32_t cfg_max_luns;
 296         uint32_t cfg_sg_seg_cnt;
 297         uint32_t cfg_sg_dma_buf_size;
 298
 299         lpfc_vpd_t vpd;         /* vital product data */
 300
 301         struct Scsi_Host *host;
 302         struct pci_dev *pcidev;
 303         struct list_head      work_list;
 304         uint32_t              work_ha;      /* Host Attention Bits for WT */
 305         uint32_t              work_ha_mask; /* HA Bits owned by WT        */
 306         uint32_t              work_hs;      /* HS stored in case of ERRAT */
 307         uint32_t              work_status[2]; /* Extra status from SLIM */
 308         uint32_t              work_hba_events; /* Timeout to be handled  */
 309 #define WORKER_DISC_TMO                0x1      /* Discovery timeout */
 310 #define WORKER_ELS_TMO                 0x2      /* ELS timeout */
 311 #define WORKER_MBOX_TMO                0x4      /* MBOX timeout */
 312 #define WORKER_FDMI_TMO                0x8      /* FDMI timeout */
 313
 314         wait_queue_head_t    *work_wait;
 315         struct task_struct   *worker_thread;
 316
 317         unsigned long pci_bar0_map;     /* Physical address for PCI BAR0 */
 318         unsigned long pci_bar2_map;     /* Physical address for PCI BAR2 */
 319         void __iomem *slim_memmap_p;    /* Kernel memory mapped address for
 320                                            PCI BAR0 */
 321         void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
 322                                             PCI BAR2 */
 323
 324         void __iomem *MBslimaddr;       /* virtual address for mbox cmds */
 325         void __iomem *HAregaddr;        /* virtual address for host attn reg */
 326         void __iomem *CAregaddr;        /* virtual address for chip attn reg */
 327         void __iomem *HSregaddr;        /* virtual address for host status
 328                                            reg */
 329         void __iomem *HCregaddr;        /* virtual address for host ctl reg */
 330
 331         int brd_no;                     /* FC board number */
 332
 333         char SerialNumber[32];          /* adapter Serial Number */
 334         char OptionROMVersion[32];      /* adapter BIOS / Fcode version */
 335         char ModelDesc[256];            /* Model Description */
 336         char ModelName[80];             /* Model Name */
 337         char ProgramType[256];          /* Program Type */
 338         char Port[20];                  /* Port No */
 339         uint8_t vpd_flag;               /* VPD data flag */
 340
 341 #define VPD_MODEL_DESC      0x1         /* valid vpd model description */
 342 #define VPD_MODEL_NAME      0x2         /* valid vpd model name */
 343 #define VPD_PROGRAM_TYPE    0x4         /* valid vpd program type */
 344 #define VPD_PORT            0x8         /* valid vpd port data */
 345 #define VPD_MASK            0xf         /* mask for any vpd data */
 346
 347         struct timer_list els_tmofunc;
 348
 349         void *link_stats;
 350
 351         /*
 352          * stat  counters
 353          */
 354         uint64_t fc4InputRequests;
 355         uint64_t fc4OutputRequests;
 356         uint64_t fc4ControlRequests;
 357
 358         struct lpfc_sysfs_mbox sysfs_mbox;
 359
 360         /* fastpath list. */
 361         struct list_head lpfc_scsi_buf_list;
 362         uint32_t total_scsi_bufs;
 363         struct list_head lpfc_iocb_list;
 364         uint32_t total_iocbq_bufs;
 365
 366         /* pci_mem_pools */
 367         struct pci_pool *lpfc_scsi_dma_buf_pool;
 368         struct pci_pool *lpfc_mbuf_pool;
 369         struct lpfc_dma_pool lpfc_mbuf_safety_pool;
 370
 371         mempool_t *mbox_mem_pool;
 372         mempool_t *nlp_mem_pool;
 373         struct list_head freebufList;
 374         struct list_head ctrspbuflist;
 375         struct list_head rnidrspbuflist;
 376 };
 377
 378
 379 struct rnidrsp {
 380         void *buf;
 381         uint32_t uniqueid;
 382         struct list_head list;
 383         uint32_t data;
 384 };