linux/drivers/scsi/megaraid.h
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   1#ifndef __MEGARAID_H__
   2#define __MEGARAID_H__
   3
   4#include <linux/spinlock.h>
   5#include <linux/mutex.h>
   6
   7#define MEGARAID_VERSION        \
   8        "v2.00.4 (Release Date: Thu Feb 9 08:51:30 EST 2006)\n"
   9
  10/*
  11 * Driver features - change the values to enable or disable features in the
  12 * driver.
  13 */
  14
  15/*
  16 * Command coalescing - This feature allows the driver to be able to combine
  17 * two or more commands and issue as one command in order to boost I/O
  18 * performance. Useful if the nature of the I/O is sequential. It is not very
  19 * useful for random natured I/Os.
  20 */
  21#define MEGA_HAVE_COALESCING    0
  22
  23/*
  24 * Clustering support - Set this flag if you are planning to use the
  25 * clustering services provided by the megaraid controllers and planning to
  26 * setup a cluster
  27 */
  28#define MEGA_HAVE_CLUSTERING    1
  29
  30/*
  31 * Driver statistics - Set this flag if you are interested in statics about
  32 * number of I/O completed on each logical drive and how many interrupts
  33 * generated. If enabled, this information is available through /proc
  34 * interface and through the private ioctl. Setting this flag has a
  35 * performance penalty.
  36 */
  37#define MEGA_HAVE_STATS         0
  38
  39/*
  40 * Enhanced /proc interface - This feature will allow you to have a more
  41 * detailed /proc interface for megaraid driver. E.g., a real time update of
  42 * the status of the logical drives, battery status, physical drives etc.
  43 */
  44#define MEGA_HAVE_ENH_PROC      1
  45
  46#define MAX_DEV_TYPE    32
  47
  48#ifndef PCI_VENDOR_ID_LSI_LOGIC
  49#define PCI_VENDOR_ID_LSI_LOGIC         0x1000
  50#endif
  51
  52#ifndef PCI_VENDOR_ID_AMI
  53#define PCI_VENDOR_ID_AMI               0x101E
  54#endif
  55
  56#ifndef PCI_VENDOR_ID_DELL
  57#define PCI_VENDOR_ID_DELL              0x1028
  58#endif
  59
  60#ifndef PCI_VENDOR_ID_INTEL
  61#define PCI_VENDOR_ID_INTEL             0x8086
  62#endif
  63
  64#ifndef PCI_DEVICE_ID_AMI_MEGARAID
  65#define PCI_DEVICE_ID_AMI_MEGARAID      0x9010
  66#endif
  67
  68#ifndef PCI_DEVICE_ID_AMI_MEGARAID2
  69#define PCI_DEVICE_ID_AMI_MEGARAID2     0x9060
  70#endif
  71
  72#ifndef PCI_DEVICE_ID_AMI_MEGARAID3
  73#define PCI_DEVICE_ID_AMI_MEGARAID3     0x1960
  74#endif
  75
  76#define PCI_DEVICE_ID_DISCOVERY         0x000E
  77#define PCI_DEVICE_ID_PERC4_DI          0x000F
  78#define PCI_DEVICE_ID_PERC4_QC_VERDE    0x0407
  79
  80/* Sub-System Vendor IDs */
  81#define AMI_SUBSYS_VID                  0x101E
  82#define DELL_SUBSYS_VID                 0x1028
  83#define HP_SUBSYS_VID                   0x103C
  84#define LSI_SUBSYS_VID                  0x1000
  85#define INTEL_SUBSYS_VID                0x8086
  86
  87#define HBA_SIGNATURE                   0x3344
  88#define HBA_SIGNATURE_471               0xCCCC
  89#define HBA_SIGNATURE_64BIT             0x0299
  90
  91#define MBOX_BUSY_WAIT                  10      /* wait for up to 10 usec for
  92                                                   mailbox to be free */
  93#define DEFAULT_INITIATOR_ID    7
  94
  95#define MAX_SGLIST              64      /* max supported in f/w */
  96#define MIN_SGLIST              26      /* guaranteed to support these many */
  97#define MAX_COMMANDS            126
  98#define CMDID_INT_CMDS          MAX_COMMANDS+1  /* make sure CMDID_INT_CMDS
  99                                                is less than max commands
 100                                                supported by any f/w */
 101
 102#define MAX_CDB_LEN             10
 103#define MAX_EXT_CDB_LEN         16      /* we support cdb length up to 16 */
 104
 105#define DEF_CMD_PER_LUN         63
 106#define MAX_CMD_PER_LUN         MAX_COMMANDS
 107#define MAX_FIRMWARE_STATUS     46
 108#define MAX_XFER_PER_CMD        (64*1024)
 109#define MAX_SECTORS_PER_IO      128
 110
 111#define MAX_LOGICAL_DRIVES_40LD         40
 112#define FC_MAX_PHYSICAL_DEVICES         256
 113#define MAX_LOGICAL_DRIVES_8LD          8
 114#define MAX_CHANNELS                    5
 115#define MAX_TARGET                      15
 116#define MAX_PHYSICAL_DRIVES             MAX_CHANNELS*MAX_TARGET
 117#define MAX_ROW_SIZE_40LD               32
 118#define MAX_ROW_SIZE_8LD                8
 119#define MAX_SPAN_DEPTH                  8
 120
 121#define NVIRT_CHAN              4       /* # of virtual channels to represent
 122                                           up to 60 logical drives */
 123struct mbox_out {
 124        /* 0x0 */ u8 cmd;
 125        /* 0x1 */ u8 cmdid;
 126        /* 0x2 */ u16 numsectors;
 127        /* 0x4 */ u32 lba;
 128        /* 0x8 */ u32 xferaddr;
 129        /* 0xC */ u8 logdrv;
 130        /* 0xD */ u8 numsgelements;
 131        /* 0xE */ u8 resvd;
 132} __attribute__ ((packed));
 133
 134struct mbox_in {
 135        /* 0xF */ volatile u8 busy;
 136        /* 0x10 */ volatile u8 numstatus;
 137        /* 0x11 */ volatile u8 status;
 138        /* 0x12 */ volatile u8 completed[MAX_FIRMWARE_STATUS];
 139        volatile u8 poll;
 140        volatile u8 ack;
 141} __attribute__ ((packed));
 142
 143typedef struct {
 144        struct mbox_out m_out;
 145        struct mbox_in  m_in;
 146} __attribute__ ((packed)) mbox_t;
 147
 148typedef struct {
 149        u32 xfer_segment_lo;
 150        u32 xfer_segment_hi;
 151        mbox_t mbox;
 152} __attribute__ ((packed)) mbox64_t;
 153
 154
 155/*
 156 * Passthru definitions
 157 */
 158#define MAX_REQ_SENSE_LEN       0x20
 159
 160typedef struct {
 161        u8 timeout:3;           /* 0=6sec/1=60sec/2=10min/3=3hrs */
 162        u8 ars:1;
 163        u8 reserved:3;
 164        u8 islogical:1;
 165        u8 logdrv;              /* if islogical == 1 */
 166        u8 channel;             /* if islogical == 0 */
 167        u8 target;              /* if islogical == 0 */
 168        u8 queuetag;            /* unused */
 169        u8 queueaction;         /* unused */
 170        u8 cdb[MAX_CDB_LEN];
 171        u8 cdblen;
 172        u8 reqsenselen;
 173        u8 reqsensearea[MAX_REQ_SENSE_LEN];
 174        u8 numsgelements;
 175        u8 scsistatus;
 176        u32 dataxferaddr;
 177        u32 dataxferlen;
 178} __attribute__ ((packed)) mega_passthru;
 179
 180
 181/*
 182 * Extended passthru: support CDB > 10 bytes
 183 */
 184typedef struct {
 185        u8 timeout:3;           /* 0=6sec/1=60sec/2=10min/3=3hrs */
 186        u8 ars:1;
 187        u8 rsvd1:1;
 188        u8 cd_rom:1;
 189        u8 rsvd2:1;
 190        u8 islogical:1;
 191        u8 logdrv;              /* if islogical == 1 */
 192        u8 channel;             /* if islogical == 0 */
 193        u8 target;              /* if islogical == 0 */
 194        u8 queuetag;            /* unused */
 195        u8 queueaction;         /* unused */
 196        u8 cdblen;
 197        u8 rsvd3;
 198        u8 cdb[MAX_EXT_CDB_LEN];
 199        u8 numsgelements;
 200        u8 status;
 201        u8 reqsenselen;
 202        u8 reqsensearea[MAX_REQ_SENSE_LEN];
 203        u8 rsvd4;
 204        u32 dataxferaddr;
 205        u32 dataxferlen;
 206} __attribute__ ((packed)) mega_ext_passthru;
 207
 208typedef struct {
 209        u64 address;
 210        u32 length;
 211} __attribute__ ((packed)) mega_sgl64;
 212
 213typedef struct {
 214        u32 address;
 215        u32 length;
 216} __attribute__ ((packed)) mega_sglist;
 217
 218
 219/* Queued command data */
 220typedef struct {
 221        int     idx;
 222        u32     state;
 223        struct list_head        list;
 224        u8      raw_mbox[66];
 225        u32     dma_type;
 226        u32     dma_direction;
 227
 228        Scsi_Cmnd       *cmd;
 229        dma_addr_t      dma_h_bulkdata;
 230        dma_addr_t      dma_h_sgdata;
 231
 232        mega_sglist     *sgl;
 233        mega_sgl64      *sgl64;
 234        dma_addr_t      sgl_dma_addr;
 235
 236        mega_passthru           *pthru;
 237        dma_addr_t              pthru_dma_addr;
 238        mega_ext_passthru       *epthru;
 239        dma_addr_t              epthru_dma_addr;
 240} scb_t;
 241
 242/*
 243 * Flags to follow the scb as it transitions between various stages
 244 */
 245#define SCB_FREE        0x0000  /* on the free list */
 246#define SCB_ACTIVE      0x0001  /* off the free list */
 247#define SCB_PENDQ       0x0002  /* on the pending queue */
 248#define SCB_ISSUED      0x0004  /* issued - owner f/w */
 249#define SCB_ABORT       0x0008  /* Got an abort for this one */
 250#define SCB_RESET       0x0010  /* Got a reset for this one */
 251
 252/*
 253 * Utilities declare this strcture size as 1024 bytes. So more fields can
 254 * be added in future.
 255 */
 256typedef struct {
 257        u32     data_size; /* current size in bytes (not including resvd) */
 258
 259        u32     config_signature;
 260                /* Current value is 0x00282008
 261                 * 0x28=MAX_LOGICAL_DRIVES,
 262                 * 0x20=Number of stripes and
 263                 * 0x08=Number of spans */
 264
 265        u8      fw_version[16];         /* printable ASCI string */
 266        u8      bios_version[16];       /* printable ASCI string */
 267        u8      product_name[80];       /* printable ASCI string */
 268
 269        u8      max_commands;           /* Max. concurrent commands supported */
 270        u8      nchannels;              /* Number of SCSI Channels detected */
 271        u8      fc_loop_present;        /* Number of Fibre Loops detected */
 272        u8      mem_type;               /* EDO, FPM, SDRAM etc */
 273
 274        u32     signature;
 275        u16     dram_size;              /* In terms of MB */
 276        u16     subsysid;
 277
 278        u16     subsysvid;
 279        u8      notify_counters;
 280        u8      pad1k[889];             /* 135 + 889 resvd = 1024 total size */
 281} __attribute__ ((packed)) mega_product_info;
 282
 283struct notify {
 284        u32 global_counter;     /* Any change increments this counter */
 285
 286        u8 param_counter;       /* Indicates any params changed  */
 287        u8 param_id;            /* Param modified - defined below */
 288        u16 param_val;          /* New val of last param modified */
 289
 290        u8 write_config_counter;        /* write config occurred */
 291        u8 write_config_rsvd[3];
 292
 293        u8 ldrv_op_counter;     /* Indicates ldrv op started/completed */
 294        u8 ldrv_opid;           /* ldrv num */
 295        u8 ldrv_opcmd;          /* ldrv operation - defined below */
 296        u8 ldrv_opstatus;       /* status of the operation */
 297
 298        u8 ldrv_state_counter;  /* Indicates change of ldrv state */
 299        u8 ldrv_state_id;               /* ldrv num */
 300        u8 ldrv_state_new;      /* New state */
 301        u8 ldrv_state_old;      /* old state */
 302
 303        u8 pdrv_state_counter;  /* Indicates change of ldrv state */
 304        u8 pdrv_state_id;               /* pdrv id */
 305        u8 pdrv_state_new;      /* New state */
 306        u8 pdrv_state_old;      /* old state */
 307
 308        u8 pdrv_fmt_counter;    /* Indicates pdrv format started/over */
 309        u8 pdrv_fmt_id;         /* pdrv id */
 310        u8 pdrv_fmt_val;                /* format started/over */
 311        u8 pdrv_fmt_rsvd;
 312
 313        u8 targ_xfer_counter;   /* Indicates SCSI-2 Xfer rate change */
 314        u8 targ_xfer_id;        /* pdrv Id  */
 315        u8 targ_xfer_val;               /* new Xfer params of last pdrv */
 316        u8 targ_xfer_rsvd;
 317
 318        u8 fcloop_id_chg_counter;       /* Indicates loopid changed */
 319        u8 fcloopid_pdrvid;             /* pdrv id */
 320        u8 fcloop_id0;                  /* loopid on fc loop 0 */
 321        u8 fcloop_id1;                  /* loopid on fc loop 1 */
 322
 323        u8 fcloop_state_counter;        /* Indicates loop state changed */
 324        u8 fcloop_state0;               /* state of fc loop 0 */
 325        u8 fcloop_state1;               /* state of fc loop 1 */
 326        u8 fcloop_state_rsvd;
 327} __attribute__ ((packed));
 328
 329#define MAX_NOTIFY_SIZE     0x80
 330#define CUR_NOTIFY_SIZE     sizeof(struct notify)
 331
 332typedef struct {
 333        u32     data_size; /* current size in bytes (not including resvd) */
 334
 335        struct notify notify;
 336
 337        u8      notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE];
 338
 339        u8      rebuild_rate;           /* Rebuild rate (0% - 100%) */
 340        u8      cache_flush_interval;   /* In terms of Seconds */
 341        u8      sense_alert;
 342        u8      drive_insert_count;     /* drive insertion count */
 343
 344        u8      battery_status;
 345        u8      num_ldrv;               /* No. of Log Drives configured */
 346        u8      recon_state[MAX_LOGICAL_DRIVES_40LD / 8];       /* State of
 347                                                           reconstruct */
 348        u16     ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8]; /* logdrv
 349                                                                 Status */
 350
 351        u32     ldrv_size[MAX_LOGICAL_DRIVES_40LD];/* Size of each log drv */
 352        u8      ldrv_prop[MAX_LOGICAL_DRIVES_40LD];
 353        u8      ldrv_state[MAX_LOGICAL_DRIVES_40LD];/* State of log drives */
 354        u8      pdrv_state[FC_MAX_PHYSICAL_DEVICES];/* State of phys drvs. */
 355        u16     pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16];
 356
 357        u8      targ_xfer[80];  /* phys device transfer rate */
 358        u8      pad1k[263];     /* 761 + 263reserved = 1024 bytes total size */
 359} __attribute__ ((packed)) mega_inquiry3;
 360
 361
 362/* Structures */
 363typedef struct {
 364        u8      max_commands;   /* Max concurrent commands supported */
 365        u8      rebuild_rate;   /* Rebuild rate - 0% thru 100% */
 366        u8      max_targ_per_chan;      /* Max targ per channel */
 367        u8      nchannels;      /* Number of channels on HBA */
 368        u8      fw_version[4];  /* Firmware version */
 369        u16     age_of_flash;   /* Number of times FW has been flashed */
 370        u8      chip_set_value; /* Contents of 0xC0000832 */
 371        u8      dram_size;      /* In MB */
 372        u8      cache_flush_interval;   /* in seconds */
 373        u8      bios_version[4];
 374        u8      board_type;
 375        u8      sense_alert;
 376        u8      write_config_count;     /* Increase with every configuration
 377                                           change */
 378        u8      drive_inserted_count;   /* Increase with every drive inserted
 379                                         */
 380        u8      inserted_drive; /* Channel:Id of inserted drive */
 381        u8      battery_status; /*
 382                                 * BIT 0: battery module missing
 383                                 * BIT 1: VBAD
 384                                 * BIT 2: temperature high
 385                                 * BIT 3: battery pack missing
 386                                 * BIT 4,5:
 387                                 *   00 - charge complete
 388                                 *   01 - fast charge in progress
 389                                 *   10 - fast charge fail
 390                                 *   11 - undefined
 391                                 * Bit 6: counter > 1000
 392                                 * Bit 7: Undefined
 393                                 */
 394        u8      dec_fault_bus_info;
 395} __attribute__ ((packed)) mega_adp_info;
 396
 397
 398typedef struct {
 399        u8      num_ldrv;       /* Number of logical drives configured */
 400        u8      rsvd[3];
 401        u32     ldrv_size[MAX_LOGICAL_DRIVES_8LD];
 402        u8      ldrv_prop[MAX_LOGICAL_DRIVES_8LD];
 403        u8      ldrv_state[MAX_LOGICAL_DRIVES_8LD];
 404} __attribute__ ((packed)) mega_ldrv_info;
 405
 406typedef struct {
 407        u8      pdrv_state[MAX_PHYSICAL_DRIVES];
 408        u8      rsvd;
 409} __attribute__ ((packed)) mega_pdrv_info;
 410
 411/* RAID inquiry: Mailbox command 0x05*/
 412typedef struct {
 413        mega_adp_info   adapter_info;
 414        mega_ldrv_info  logdrv_info;
 415        mega_pdrv_info  pdrv_info;
 416} __attribute__ ((packed)) mraid_inquiry;
 417
 418
 419/* RAID extended inquiry: Mailbox command 0x04*/
 420typedef struct {
 421        mraid_inquiry   raid_inq;
 422        u16     phys_drv_format[MAX_CHANNELS];
 423        u8      stack_attn;
 424        u8      modem_status;
 425        u8      rsvd[2];
 426} __attribute__ ((packed)) mraid_ext_inquiry;
 427
 428
 429typedef struct {
 430        u8      channel;
 431        u8      target;
 432}__attribute__ ((packed)) adp_device;
 433
 434typedef struct {
 435        u32             start_blk;      /* starting block */
 436        u32             num_blks;       /* # of blocks */
 437        adp_device      device[MAX_ROW_SIZE_40LD];
 438}__attribute__ ((packed)) adp_span_40ld;
 439
 440typedef struct {
 441        u32             start_blk;      /* starting block */
 442        u32             num_blks;       /* # of blocks */
 443        adp_device      device[MAX_ROW_SIZE_8LD];
 444}__attribute__ ((packed)) adp_span_8ld;
 445
 446typedef struct {
 447        u8      span_depth;     /* Total # of spans */
 448        u8      level;          /* RAID level */
 449        u8      read_ahead;     /* read ahead, no read ahead, adaptive read
 450                                   ahead */
 451        u8      stripe_sz;      /* Encoded stripe size */
 452        u8      status;         /* Status of the logical drive */
 453        u8      write_mode;     /* write mode, write_through/write_back */
 454        u8      direct_io;      /* direct io or through cache */
 455        u8      row_size;       /* Number of stripes in a row */
 456} __attribute__ ((packed)) logdrv_param;
 457
 458typedef struct {
 459        logdrv_param    lparam;
 460        adp_span_40ld   span[MAX_SPAN_DEPTH];
 461}__attribute__ ((packed)) logdrv_40ld;
 462
 463typedef struct {
 464        logdrv_param    lparam;
 465        adp_span_8ld    span[MAX_SPAN_DEPTH];
 466}__attribute__ ((packed)) logdrv_8ld;
 467
 468typedef struct {
 469        u8      type;           /* Type of the device */
 470        u8      cur_status;     /* current status of the device */
 471        u8      tag_depth;      /* Level of tagging */
 472        u8      sync_neg;       /* sync negotiation - ENABLE or DISABLE */
 473        u32     size;           /* configurable size in terms of 512 byte
 474                                   blocks */
 475}__attribute__ ((packed)) phys_drv;
 476
 477typedef struct {
 478        u8              nlog_drives;            /* number of logical drives */
 479        u8              resvd[3];
 480        logdrv_40ld     ldrv[MAX_LOGICAL_DRIVES_40LD];
 481        phys_drv        pdrv[MAX_PHYSICAL_DRIVES];
 482}__attribute__ ((packed)) disk_array_40ld;
 483
 484typedef struct {
 485        u8              nlog_drives;    /* number of logical drives */
 486        u8              resvd[3];
 487        logdrv_8ld      ldrv[MAX_LOGICAL_DRIVES_8LD];
 488        phys_drv        pdrv[MAX_PHYSICAL_DRIVES];
 489}__attribute__ ((packed)) disk_array_8ld;
 490
 491
 492/*
 493 * User ioctl structure.
 494 * This structure will be used for Traditional Method ioctl interface
 495 * commands (0x80),Alternate Buffer Method (0x81) ioctl commands and the
 496 * Driver ioctls.
 497 * The Driver ioctl interface handles the commands at the driver level,
 498 * without being sent to the card.
 499 */
 500/* system call imposed limit. Change accordingly */
 501#define IOCTL_MAX_DATALEN       4096
 502
 503struct uioctl_t {
 504        u32 inlen;
 505        u32 outlen;
 506        union {
 507                u8 fca[16];
 508                struct {
 509                        u8 opcode;
 510                        u8 subopcode;
 511                        u16 adapno;
 512#if BITS_PER_LONG == 32
 513                        u8 *buffer;
 514                        u8 pad[4];
 515#endif
 516#if BITS_PER_LONG == 64
 517                        u8 *buffer;
 518#endif
 519                        u32 length;
 520                } __attribute__ ((packed)) fcs;
 521        } __attribute__ ((packed)) ui;
 522        u8 mbox[18];            /* 16 bytes + 2 status bytes */
 523        mega_passthru pthru;
 524#if BITS_PER_LONG == 32
 525        char __user *data;              /* buffer <= 4096 for 0x80 commands */
 526        char pad[4];
 527#endif
 528#if BITS_PER_LONG == 64
 529        char __user *data;
 530#endif
 531} __attribute__ ((packed));
 532
 533/*
 534 * struct mcontroller is used to pass information about the controllers in the
 535 * system. Its up to the application how to use the information. We are passing
 536 * as much info about the cards as possible and useful. Before issuing the
 537 * call to find information about the cards, the application needs to issue a
 538 * ioctl first to find out the number of controllers in the system.
 539 */
 540#define MAX_CONTROLLERS 32
 541
 542struct mcontroller {
 543        u64 base;
 544        u8 irq;
 545        u8 numldrv;
 546        u8 pcibus;
 547        u16 pcidev;
 548        u8 pcifun;
 549        u16 pciid;
 550        u16 pcivendor;
 551        u8 pcislot;
 552        u32 uid;
 553};
 554
 555/*
 556 * mailbox structure used for internal commands
 557 */
 558typedef struct {
 559        u8      cmd;
 560        u8      cmdid;
 561        u8      opcode;
 562        u8      subopcode;
 563        u32     lba;
 564        u32     xferaddr;
 565        u8      logdrv;
 566        u8      rsvd[3];
 567        u8      numstatus;
 568        u8      status;
 569} __attribute__ ((packed)) megacmd_t;
 570
 571/*
 572 * Defines for Driver IOCTL interface
 573 */
 574#define MEGAIOC_MAGIC   'm'
 575
 576#define MEGAIOC_QNADAP          'm'     /* Query # of adapters */
 577#define MEGAIOC_QDRVRVER        'e'     /* Query driver version */
 578#define MEGAIOC_QADAPINFO       'g'     /* Query adapter information */
 579#define MKADAP(adapno)          (MEGAIOC_MAGIC << 8 | (adapno) )
 580#define GETADAP(mkadap)         ( (mkadap) ^ MEGAIOC_MAGIC << 8 )
 581
 582/*
 583 * Definition for the new ioctl interface (NIT)
 584 */
 585
 586/*
 587 * Vendor specific Group-7 commands
 588 */
 589#define VENDOR_SPECIFIC_COMMANDS        0xE0
 590#define MEGA_INTERNAL_CMD               VENDOR_SPECIFIC_COMMANDS + 0x01
 591
 592/*
 593 * The ioctl command. No other command shall be used for this interface
 594 */
 595#define USCSICMD        VENDOR_SPECIFIC_COMMANDS
 596
 597/*
 598 * Data direction flags
 599 */
 600#define UIOC_RD         0x00001
 601#define UIOC_WR         0x00002
 602
 603/*
 604 * ioctl opcodes
 605 */
 606#define MBOX_CMD        0x00000 /* DCMD or passthru command */
 607#define GET_DRIVER_VER  0x10000 /* Get driver version */
 608#define GET_N_ADAP      0x20000 /* Get number of adapters */
 609#define GET_ADAP_INFO   0x30000 /* Get information about a adapter */
 610#define GET_CAP         0x40000 /* Get ioctl capabilities */
 611#define GET_STATS       0x50000 /* Get statistics, including error info */
 612
 613
 614/*
 615 * The ioctl structure.
 616 * MBOX macro converts a nitioctl_t structure to megacmd_t pointer and
 617 * MBOX_P macro converts a nitioctl_t pointer to megacmd_t pointer.
 618 */
 619typedef struct {
 620        char            signature[8];   /* Must contain "MEGANIT" */
 621        u32             opcode;         /* opcode for the command */
 622        u32             adapno;         /* adapter number */
 623        union {
 624                u8      __raw_mbox[18];
 625                void __user *__uaddr; /* xferaddr for non-mbox cmds */
 626        }__ua;
 627
 628#define uioc_rmbox      __ua.__raw_mbox
 629#define MBOX(uioc)      ((megacmd_t *)&((uioc).__ua.__raw_mbox[0]))
 630#define MBOX_P(uioc)    ((megacmd_t __user *)&((uioc)->__ua.__raw_mbox[0]))
 631#define uioc_uaddr      __ua.__uaddr
 632
 633        u32             xferlen;        /* xferlen for DCMD and non-mbox
 634                                           commands */
 635        u32             flags;          /* data direction flags */
 636}nitioctl_t;
 637
 638
 639/*
 640 * I/O statistics for some applications like SNMP agent. The caller must
 641 * provide the number of logical drives for which status should be reported.
 642 */
 643typedef struct {
 644        int     num_ldrv;       /* Number for logical drives for which the
 645                                   status should be reported. */
 646        u32     nreads[MAX_LOGICAL_DRIVES_40LD];        /* number of reads for
 647                                                        each logical drive */
 648        u32     nreadblocks[MAX_LOGICAL_DRIVES_40LD];   /* number of blocks
 649                                                        read for each logical
 650                                                        drive */
 651        u32     nwrites[MAX_LOGICAL_DRIVES_40LD];       /* number of writes
 652                                                        for each logical
 653                                                        drive */
 654        u32     nwriteblocks[MAX_LOGICAL_DRIVES_40LD];  /* number of blocks
 655                                                        writes for each
 656                                                        logical drive */
 657        u32     rd_errors[MAX_LOGICAL_DRIVES_40LD];     /* number of read
 658                                                           errors for each
 659                                                           logical drive */
 660        u32     wr_errors[MAX_LOGICAL_DRIVES_40LD];     /* number of write
 661                                                           errors for each
 662                                                           logical drive */
 663}megastat_t;
 664
 665
 666struct private_bios_data {
 667        u8      geometry:4;     /*
 668                                 * bits 0-3 - BIOS geometry
 669                                 * 0x0001 - 1GB
 670                                 * 0x0010 - 2GB
 671                                 * 0x1000 - 8GB
 672                                 * Others values are invalid
 673                                                         */
 674        u8      unused:4;       /* bits 4-7 are unused */
 675        u8      boot_drv;       /*
 676                                 * logical drive set as boot drive
 677                                 * 0..7 - for 8LD cards
 678                                 * 0..39 - for 40LD cards
 679                                 */
 680        u8      rsvd[12];
 681        u16     cksum;  /* 0-(sum of first 13 bytes of this structure) */
 682} __attribute__ ((packed));
 683
 684
 685
 686
 687/*
 688 * Mailbox and firmware commands and subopcodes used in this driver.
 689 */
 690
 691#define MEGA_MBOXCMD_LREAD      0x01
 692#define MEGA_MBOXCMD_LWRITE     0x02
 693#define MEGA_MBOXCMD_PASSTHRU   0x03
 694#define MEGA_MBOXCMD_ADPEXTINQ  0x04
 695#define MEGA_MBOXCMD_ADAPTERINQ 0x05
 696#define MEGA_MBOXCMD_LREAD64    0xA7
 697#define MEGA_MBOXCMD_LWRITE64   0xA8
 698#define MEGA_MBOXCMD_PASSTHRU64 0xC3
 699#define MEGA_MBOXCMD_EXTPTHRU   0xE3
 700
 701#define MAIN_MISC_OPCODE        0xA4    /* f/w misc opcode */
 702#define GET_MAX_SG_SUPPORT      0x01    /* get max sg len supported by f/w */
 703
 704#define FC_NEW_CONFIG           0xA1
 705#define NC_SUBOP_PRODUCT_INFO   0x0E
 706#define NC_SUBOP_ENQUIRY3       0x0F
 707#define ENQ3_GET_SOLICITED_FULL 0x02
 708#define OP_DCMD_READ_CONFIG     0x04
 709#define NEW_READ_CONFIG_8LD     0x67
 710#define READ_CONFIG_8LD         0x07
 711#define FLUSH_ADAPTER           0x0A
 712#define FLUSH_SYSTEM            0xFE
 713
 714/*
 715 * Command for random deletion of logical drives
 716 */
 717#define FC_DEL_LOGDRV           0xA4    /* f/w command */
 718#define OP_SUP_DEL_LOGDRV       0x2A    /* is feature supported */
 719#define OP_GET_LDID_MAP         0x18    /* get ldid and logdrv number map */
 720#define OP_DEL_LOGDRV           0x1C    /* delete logical drive */
 721
 722/*
 723 * BIOS commands
 724 */
 725#define IS_BIOS_ENABLED         0x62
 726#define GET_BIOS                0x01
 727#define CHNL_CLASS              0xA9
 728#define GET_CHNL_CLASS          0x00
 729#define SET_CHNL_CLASS          0x01
 730#define CH_RAID                 0x01
 731#define CH_SCSI                 0x00
 732#define BIOS_PVT_DATA           0x40
 733#define GET_BIOS_PVT_DATA       0x00
 734
 735
 736/*
 737 * Commands to support clustering
 738 */
 739#define MEGA_GET_TARGET_ID      0x7D
 740#define MEGA_CLUSTER_OP         0x70
 741#define MEGA_GET_CLUSTER_MODE   0x02
 742#define MEGA_CLUSTER_CMD        0x6E
 743#define MEGA_RESERVE_LD         0x01
 744#define MEGA_RELEASE_LD         0x02
 745#define MEGA_RESET_RESERVATIONS 0x03
 746#define MEGA_RESERVATION_STATUS 0x04
 747#define MEGA_RESERVE_PD         0x05
 748#define MEGA_RELEASE_PD         0x06
 749
 750
 751/*
 752 * Module battery status
 753 */
 754#define MEGA_BATT_MODULE_MISSING        0x01
 755#define MEGA_BATT_LOW_VOLTAGE           0x02
 756#define MEGA_BATT_TEMP_HIGH             0x04
 757#define MEGA_BATT_PACK_MISSING          0x08
 758#define MEGA_BATT_CHARGE_MASK           0x30
 759#define MEGA_BATT_CHARGE_DONE           0x00
 760#define MEGA_BATT_CHARGE_INPROG         0x10
 761#define MEGA_BATT_CHARGE_FAIL           0x20
 762#define MEGA_BATT_CYCLES_EXCEEDED       0x40
 763
 764/*
 765 * Physical drive states.
 766 */
 767#define PDRV_UNCNF      0
 768#define PDRV_ONLINE     3
 769#define PDRV_FAILED     4
 770#define PDRV_RBLD       5
 771#define PDRV_HOTSPARE   6
 772
 773
 774/*
 775 * Raid logical drive states.
 776 */
 777#define RDRV_OFFLINE    0
 778#define RDRV_DEGRADED   1
 779#define RDRV_OPTIMAL    2
 780#define RDRV_DELETED    3
 781
 782/*
 783 * Read, write and cache policies
 784 */
 785#define NO_READ_AHEAD           0
 786#define READ_AHEAD              1
 787#define ADAP_READ_AHEAD         2
 788#define WRMODE_WRITE_THRU       0
 789#define WRMODE_WRITE_BACK       1
 790#define CACHED_IO               0
 791#define DIRECT_IO               1
 792
 793
 794#define SCSI_LIST(scp) ((struct list_head *)(&(scp)->SCp))
 795
 796/*
 797 * Each controller's soft state
 798 */
 799typedef struct {
 800        int     this_id;        /* our id, may set to different than 7 if
 801                                   clustering is available */
 802        u32     flag;
 803
 804        unsigned long           base;
 805        void __iomem            *mmio_base;
 806
 807        /* mbox64 with mbox not aligned on 16-byte boundary */
 808        mbox64_t        *una_mbox64;
 809        dma_addr_t      una_mbox64_dma;
 810
 811        volatile mbox64_t       *mbox64;/* ptr to 64-bit mailbox */
 812        volatile mbox_t         *mbox;  /* ptr to standard mailbox */
 813        dma_addr_t              mbox_dma;
 814
 815        struct pci_dev  *dev;
 816
 817        struct list_head        free_list;
 818        struct list_head        pending_list;
 819        struct list_head        completed_list;
 820
 821        struct Scsi_Host        *host;
 822
 823#define MEGA_BUFFER_SIZE (2*1024)
 824        u8              *mega_buffer;
 825        dma_addr_t      buf_dma_handle;
 826
 827        mega_product_info       product_info;
 828
 829        u8              max_cmds;
 830        scb_t           *scb_list;
 831
 832        atomic_t        pend_cmds;      /* maintain a counter for pending
 833                                           commands in firmware */
 834
 835#if MEGA_HAVE_STATS
 836        u32     nreads[MAX_LOGICAL_DRIVES_40LD];
 837        u32     nreadblocks[MAX_LOGICAL_DRIVES_40LD];
 838        u32     nwrites[MAX_LOGICAL_DRIVES_40LD];
 839        u32     nwriteblocks[MAX_LOGICAL_DRIVES_40LD];
 840        u32     rd_errors[MAX_LOGICAL_DRIVES_40LD];
 841        u32     wr_errors[MAX_LOGICAL_DRIVES_40LD];
 842#endif
 843
 844        /* Host adapter parameters */
 845        u8      numldrv;
 846        u8      fw_version[7];
 847        u8      bios_version[7];
 848
 849#ifdef CONFIG_PROC_FS
 850        struct proc_dir_entry   *controller_proc_dir_entry;
 851        struct proc_dir_entry   *proc_read;
 852        struct proc_dir_entry   *proc_stat;
 853        struct proc_dir_entry   *proc_mbox;
 854
 855#if MEGA_HAVE_ENH_PROC
 856        struct proc_dir_entry   *proc_rr;
 857        struct proc_dir_entry   *proc_battery;
 858#define MAX_PROC_CHANNELS       4
 859        struct proc_dir_entry   *proc_pdrvstat[MAX_PROC_CHANNELS];
 860        struct proc_dir_entry   *proc_rdrvstat[MAX_PROC_CHANNELS];
 861#endif
 862
 863#endif
 864
 865        int     has_64bit_addr;         /* are we using 64-bit addressing */
 866        int     support_ext_cdb;
 867        int     boot_ldrv_enabled;
 868        int     boot_ldrv;
 869        int     boot_pdrv_enabled;      /* boot from physical drive */
 870        int     boot_pdrv_ch;           /* boot physical drive channel */
 871        int     boot_pdrv_tgt;          /* boot physical drive target */
 872
 873
 874        int     support_random_del;     /* Do we support random deletion of
 875                                           logdrvs */
 876        int     read_ldidmap;   /* set after logical drive deltion. The
 877                                   logical drive number must be read from the
 878                                   map */
 879        atomic_t        quiescent;      /* a stage reached when delete logical
 880                                           drive needs to be done. Stop
 881                                           sending requests to the hba till
 882                                           delete operation is completed */
 883        spinlock_t      lock;
 884
 885        u8      logdrv_chan[MAX_CHANNELS+NVIRT_CHAN]; /* logical drive are on
 886                                                        what channels. */
 887        int     mega_ch_class;
 888
 889        u8      sglen;  /* f/w supported scatter-gather list length */
 890
 891        unsigned char int_cdb[MAX_COMMAND_SIZE];
 892        scb_t                   int_scb;
 893        struct mutex            int_mtx;        /* To synchronize the internal
 894                                                commands */
 895        struct completion       int_waitq;      /* wait queue for internal
 896                                                 cmds */
 897
 898        int     has_cluster;    /* cluster support on this HBA */
 899}adapter_t;
 900
 901
 902struct mega_hbas {
 903        int is_bios_enabled;
 904        adapter_t *hostdata_addr;
 905};
 906
 907
 908/*
 909 * For state flag. Do not use LSB(8 bits) which are
 910 * reserved for storing info about channels.
 911 */
 912#define IN_ABORT        0x80000000L
 913#define IN_RESET        0x40000000L
 914#define BOARD_MEMMAP    0x20000000L
 915#define BOARD_IOMAP     0x10000000L
 916#define BOARD_40LD      0x08000000L
 917#define BOARD_64BIT     0x04000000L
 918
 919#define INTR_VALID                      0x40
 920
 921#define PCI_CONF_AMISIG                 0xa0
 922#define PCI_CONF_AMISIG64               0xa4
 923
 924
 925#define MEGA_DMA_TYPE_NONE              0xFFFF
 926#define MEGA_BULK_DATA                  0x0001
 927#define MEGA_SGLIST                     0x0002
 928
 929/*
 930 * Parameters for the io-mapped controllers
 931 */
 932
 933/* I/O Port offsets */
 934#define CMD_PORT                0x00
 935#define ACK_PORT                0x00
 936#define TOGGLE_PORT             0x01
 937#define INTR_PORT               0x0a
 938
 939#define MBOX_BUSY_PORT          0x00
 940#define MBOX_PORT0              0x04
 941#define MBOX_PORT1              0x05
 942#define MBOX_PORT2              0x06
 943#define MBOX_PORT3              0x07
 944#define ENABLE_MBOX_REGION      0x0B
 945
 946/* I/O Port Values */
 947#define ISSUE_BYTE              0x10
 948#define ACK_BYTE                0x08
 949#define ENABLE_INTR_BYTE        0xc0
 950#define DISABLE_INTR_BYTE       0x00
 951#define VALID_INTR_BYTE         0x40
 952#define MBOX_BUSY_BYTE          0x10
 953#define ENABLE_MBOX_BYTE        0x00
 954
 955
 956/* Setup some port macros here */
 957#define issue_command(adapter)  \
 958                outb_p(ISSUE_BYTE, (adapter)->base + CMD_PORT)
 959
 960#define irq_state(adapter)      inb_p((adapter)->base + INTR_PORT)
 961
 962#define set_irq_state(adapter, value)   \
 963                outb_p((value), (adapter)->base + INTR_PORT)
 964
 965#define irq_ack(adapter)        \
 966                outb_p(ACK_BYTE, (adapter)->base + ACK_PORT)
 967
 968#define irq_enable(adapter)     \
 969        outb_p(ENABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
 970
 971#define irq_disable(adapter)    \
 972        outb_p(DISABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
 973
 974
 975/*
 976 * This is our SYSDEP area. All kernel specific detail should be placed here -
 977 * as much as possible
 978 */
 979
 980/*
 981 * End of SYSDEP area
 982 */
 983
 984const char *megaraid_info (struct Scsi_Host *);
 985
 986static int mega_query_adapter(adapter_t *);
 987static int issue_scb(adapter_t *, scb_t *);
 988static int mega_setup_mailbox(adapter_t *);
 989
 990static int megaraid_queue (struct Scsi_Host *, struct scsi_cmnd *);
 991static scb_t * mega_build_cmd(adapter_t *, Scsi_Cmnd *, int *);
 992static void __mega_runpendq(adapter_t *);
 993static int issue_scb_block(adapter_t *, u_char *);
 994
 995static irqreturn_t megaraid_isr_memmapped(int, void *);
 996static irqreturn_t megaraid_isr_iomapped(int, void *);
 997
 998static void mega_free_scb(adapter_t *, scb_t *);
 999
1000static int megaraid_abort(Scsi_Cmnd *);
1001static int megaraid_reset(Scsi_Cmnd *);
1002static int megaraid_abort_and_reset(adapter_t *, Scsi_Cmnd *, int);
1003static int megaraid_biosparam(struct scsi_device *, struct block_device *,
1004                sector_t, int []);
1005
1006static int mega_build_sglist (adapter_t *adapter, scb_t *scb,
1007                              u32 *buffer, u32 *length);
1008static int __mega_busywait_mbox (adapter_t *);
1009static void mega_rundoneq (adapter_t *);
1010static void mega_cmd_done(adapter_t *, u8 [], int, int);
1011static inline void mega_free_sgl (adapter_t *adapter);
1012static void mega_8_to_40ld (mraid_inquiry *inquiry,
1013                mega_inquiry3 *enquiry3, mega_product_info *);
1014
1015static int megadev_open (struct inode *, struct file *);
1016static int megadev_ioctl (struct file *, unsigned int, unsigned long);
1017static int mega_m_to_n(void __user *, nitioctl_t *);
1018static int mega_n_to_m(void __user *, megacmd_t *);
1019
1020static int mega_init_scb (adapter_t *);
1021
1022static int mega_is_bios_enabled (adapter_t *);
1023
1024#ifdef CONFIG_PROC_FS
1025static int mega_print_inquiry(char *, char *);
1026static void mega_create_proc_entry(int, struct proc_dir_entry *);
1027static int proc_read_config(char *, char **, off_t, int, int *, void *);
1028static int proc_read_stat(char *, char **, off_t, int, int *, void *);
1029static int proc_read_mbox(char *, char **, off_t, int, int *, void *);
1030static int proc_rebuild_rate(char *, char **, off_t, int, int *, void *);
1031static int proc_battery(char *, char **, off_t, int, int *, void *);
1032static int proc_pdrv_ch0(char *, char **, off_t, int, int *, void *);
1033static int proc_pdrv_ch1(char *, char **, off_t, int, int *, void *);
1034static int proc_pdrv_ch2(char *, char **, off_t, int, int *, void *);
1035static int proc_pdrv_ch3(char *, char **, off_t, int, int *, void *);
1036static int proc_pdrv(adapter_t *, char *, int);
1037static int proc_rdrv_10(char *, char **, off_t, int, int *, void *);
1038static int proc_rdrv_20(char *, char **, off_t, int, int *, void *);
1039static int proc_rdrv_30(char *, char **, off_t, int, int *, void *);
1040static int proc_rdrv_40(char *, char **, off_t, int, int *, void *);
1041static int proc_rdrv(adapter_t *, char *, int, int);
1042
1043static int mega_adapinq(adapter_t *, dma_addr_t);
1044static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
1045#endif
1046
1047static int mega_support_ext_cdb(adapter_t *);
1048static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
1049                Scsi_Cmnd *, int, int);
1050static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
1051                scb_t *, Scsi_Cmnd *, int, int);
1052static void mega_enum_raid_scsi(adapter_t *);
1053static void mega_get_boot_drv(adapter_t *);
1054static int mega_support_random_del(adapter_t *);
1055static int mega_del_logdrv(adapter_t *, int);
1056static int mega_do_del_logdrv(adapter_t *, int);
1057static void mega_get_max_sgl(adapter_t *);
1058static int mega_internal_command(adapter_t *, megacmd_t *, mega_passthru *);
1059static void mega_internal_done(Scsi_Cmnd *);
1060static int mega_support_cluster(adapter_t *);
1061#endif
1062
1063/* vi: set ts=8 sw=8 tw=78: */
1064
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