drivers/scsi/megaraid.h

   1 #ifndef __MEGARAID_H__
   2 #define __MEGARAID_H__
   3
   4 #include <linux/spinlock.h>
   5
   6
   7 #define MEGARAID_VERSION        \
   8         "v2.00.3 (Release Date: Wed Feb 19 08:51:30 EST 2003)\n"
   9
  10 /*
  11  * Driver features - change the values to enable or disable features in the
  12  * driver.
  13  */
  14
  15 /*
  16  * Comand 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 */
 123 struct 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
 134 struct 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
 143 typedef struct {
 144         struct mbox_out m_out;
 145         struct mbox_in  m_in;
 146 } __attribute__ ((packed)) mbox_t;
 147
 148 typedef 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
 160 typedef 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  */
 184 typedef 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
 208 typedef struct {
 209         u64 address;
 210         u32 length;
 211 } __attribute__ ((packed)) mega_sgl64;
 212
 213 typedef struct {
 214         u32 address;
 215         u32 length;
 216 } __attribute__ ((packed)) mega_sglist;
 217
 218
 219 /* Queued command data */
 220 typedef 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  */
 256 typedef 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
 283 struct 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
 332 typedef 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 */
 363 typedef 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: temprature 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
 398 typedef 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
 406 typedef struct {
 407         u8      pdrv_state[MAX_PHYSICAL_DRIVES];
 408         u8      rsvd;
 409 } __attribute__ ((packed)) mega_pdrv_info;
 410
 411 /* RAID inquiry: Mailbox command 0x05*/
 412 typedef 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*/
 420 typedef 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
 429 typedef struct {
 430         u8      channel;
 431         u8      target;
 432 }__attribute__ ((packed)) adp_device;
 433
 434 typedef 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
 440 typedef 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
 446 typedef 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
 458 typedef struct {
 459         logdrv_param    lparam;
 460         adp_span_40ld   span[MAX_SPAN_DEPTH];
 461 }__attribute__ ((packed)) logdrv_40ld;
 462
 463 typedef struct {
 464         logdrv_param    lparam;
 465         adp_span_8ld    span[MAX_SPAN_DEPTH];
 466 }__attribute__ ((packed)) logdrv_8ld;
 467
 468 typedef 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 DISBALE */
 473         u32     size;           /* configurable size in terms of 512 byte
 474                                    blocks */
 475 }__attribute__ ((packed)) phys_drv;
 476
 477 typedef 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
 484 typedef 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
 503 struct 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 upto 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 applicaiton needs to issue a
 538  * ioctl first to find out the number of controllers in the system.
 539  */
 540 #define MAX_CONTROLLERS 32
 541
 542 struct 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  */
 558 typedef 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  */
 619 typedef 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  */
 643 typedef 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
 666 struct 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  */
 799 typedef 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
 806         /* mbox64 with mbox not aligned on 16-byte boundry */
 807         mbox64_t        *una_mbox64;
 808         dma_addr_t      una_mbox64_dma;
 809
 810         volatile mbox64_t       *mbox64;/* ptr to 64-bit mailbox */
 811         volatile mbox_t         *mbox;  /* ptr to standard mailbox */
 812         dma_addr_t              mbox_dma;
 813
 814         struct pci_dev  *dev;
 815
 816         struct list_head        free_list;
 817         struct list_head        pending_list;
 818         struct list_head        completed_list;
 819
 820         struct Scsi_Host        *host;
 821
 822 #define MEGA_BUFFER_SIZE (2*1024)
 823         u8              *mega_buffer;
 824         dma_addr_t      buf_dma_handle;
 825
 826         mega_product_info       product_info;
 827
 828         u8              max_cmds;
 829         scb_t           *scb_list;
 830
 831         atomic_t        pend_cmds;      /* maintain a counter for pending
 832                                            commands in firmware */
 833
 834 #if MEGA_HAVE_STATS
 835         u32     nreads[MAX_LOGICAL_DRIVES_40LD];
 836         u32     nreadblocks[MAX_LOGICAL_DRIVES_40LD];
 837         u32     nwrites[MAX_LOGICAL_DRIVES_40LD];
 838         u32     nwriteblocks[MAX_LOGICAL_DRIVES_40LD];
 839         u32     rd_errors[MAX_LOGICAL_DRIVES_40LD];
 840         u32     wr_errors[MAX_LOGICAL_DRIVES_40LD];
 841 #endif
 842
 843         /* Host adapter parameters */
 844         u8      numldrv;
 845         u8      fw_version[7];
 846         u8      bios_version[7];
 847
 848 #ifdef CONFIG_PROC_FS
 849         struct proc_dir_entry   *controller_proc_dir_entry;
 850         struct proc_dir_entry   *proc_read;
 851         struct proc_dir_entry   *proc_stat;
 852         struct proc_dir_entry   *proc_mbox;
 853
 854 #if MEGA_HAVE_ENH_PROC
 855         struct proc_dir_entry   *proc_rr;
 856         struct proc_dir_entry   *proc_battery;
 857 #define MAX_PROC_CHANNELS       4
 858         struct proc_dir_entry   *proc_pdrvstat[MAX_PROC_CHANNELS];
 859         struct proc_dir_entry   *proc_rdrvstat[MAX_PROC_CHANNELS];
 860 #endif
 861
 862 #endif
 863
 864         int     has_64bit_addr;         /* are we using 64-bit addressing */
 865         int     support_ext_cdb;
 866         int     boot_ldrv_enabled;
 867         int     boot_ldrv;
 868         int     boot_pdrv_enabled;      /* boot from physical drive */
 869         int     boot_pdrv_ch;           /* boot physical drive channel */
 870         int     boot_pdrv_tgt;          /* boot physical drive target */
 871
 872
 873         int     support_random_del;     /* Do we support random deletion of
 874                                            logdrvs */
 875         int     read_ldidmap;   /* set after logical drive deltion. The
 876                                    logical drive number must be read from the
 877                                    map */
 878         atomic_t        quiescent;      /* a stage reached when delete logical
 879                                            drive needs to be done. Stop
 880                                            sending requests to the hba till
 881                                            delete operation is completed */
 882         spinlock_t      lock;
 883
 884         u8      logdrv_chan[MAX_CHANNELS+NVIRT_CHAN]; /* logical drive are on
 885                                                         what channels. */
 886         int     mega_ch_class;
 887
 888         u8      sglen;  /* f/w supported scatter-gather list length */
 889
 890         scb_t                   int_scb;
 891         Scsi_Cmnd               int_scmd;
 892         struct semaphore        int_mtx;        /* To synchronize the internal
 893                                                 commands */
 894         wait_queue_head_t       int_waitq;      /* wait queue for internal
 895                                                  cmds */
 896
 897         int     has_cluster;    /* cluster support on this HBA */
 898 }adapter_t;
 899
 900
 901 struct mega_hbas {
 902         int is_bios_enabled;
 903         adapter_t *hostdata_addr;
 904 };
 905
 906
 907 /*
 908  * For state flag. Do not use LSB(8 bits) which are
 909  * reserved for storing info about channels.
 910  */
 911 #define IN_ABORT        0x80000000L
 912 #define IN_RESET        0x40000000L
 913 #define BOARD_MEMMAP    0x20000000L
 914 #define BOARD_IOMAP     0x10000000L
 915 #define BOARD_40LD      0x08000000L
 916 #define BOARD_64BIT     0x04000000L
 917
 918 #define INTR_VALID                      0x40
 919
 920 #define PCI_CONF_AMISIG                 0xa0
 921 #define PCI_CONF_AMISIG64               0xa4
 922
 923
 924 #define MEGA_DMA_TYPE_NONE              0xFFFF
 925 #define MEGA_BULK_DATA                  0x0001
 926 #define MEGA_SGLIST                     0x0002
 927
 928 /*
 929  * lockscope definitions, callers can specify the lock scope with this data
 930  * type. LOCK_INT would mean the caller has not acquired the lock before
 931  * making the call and LOCK_EXT would mean otherwise.
 932  */
 933 typedef enum { LOCK_INT, LOCK_EXT } lockscope_t;
 934
 935 /*
 936  * Parameters for the io-mapped controllers
 937  */
 938
 939 /* I/O Port offsets */
 940 #define CMD_PORT                0x00
 941 #define ACK_PORT                0x00
 942 #define TOGGLE_PORT             0x01
 943 #define INTR_PORT               0x0a
 944
 945 #define MBOX_BUSY_PORT          0x00
 946 #define MBOX_PORT0              0x04
 947 #define MBOX_PORT1              0x05
 948 #define MBOX_PORT2              0x06
 949 #define MBOX_PORT3              0x07
 950 #define ENABLE_MBOX_REGION      0x0B
 951
 952 /* I/O Port Values */
 953 #define ISSUE_BYTE              0x10
 954 #define ACK_BYTE                0x08
 955 #define ENABLE_INTR_BYTE        0xc0
 956 #define DISABLE_INTR_BYTE       0x00
 957 #define VALID_INTR_BYTE         0x40
 958 #define MBOX_BUSY_BYTE          0x10
 959 #define ENABLE_MBOX_BYTE        0x00
 960
 961
 962 /* Setup some port macros here */
 963 #define issue_command(adapter)  \
 964                 outb_p(ISSUE_BYTE, (adapter)->base + CMD_PORT)
 965
 966 #define irq_state(adapter)      inb_p((adapter)->base + INTR_PORT)
 967
 968 #define set_irq_state(adapter, value)   \
 969                 outb_p((value), (adapter)->base + INTR_PORT)
 970
 971 #define irq_ack(adapter)        \
 972                 outb_p(ACK_BYTE, (adapter)->base + ACK_PORT)
 973
 974 #define irq_enable(adapter)     \
 975         outb_p(ENABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
 976
 977 #define irq_disable(adapter)    \
 978         outb_p(DISABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
 979
 980
 981 /*
 982  * This is our SYSDEP area. All kernel specific detail should be placed here -
 983  * as much as possible
 984  */
 985
 986 /*
 987  * End of SYSDEP area
 988  */
 989
 990 const char *megaraid_info (struct Scsi_Host *);
 991
 992 static int mega_query_adapter(adapter_t *);
 993 static int issue_scb(adapter_t *, scb_t *);
 994 static int mega_setup_mailbox(adapter_t *);
 995
 996 static int megaraid_queue (Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
 997 static scb_t * mega_build_cmd(adapter_t *, Scsi_Cmnd *, int *);
 998 static void __mega_runpendq(adapter_t *);
 999 static int issue_scb_block(adapter_t *, u_char *);
1000
1001 static irqreturn_t megaraid_isr_memmapped(int, void *, struct pt_regs *);
1002 static irqreturn_t megaraid_isr_iomapped(int, void *, struct pt_regs *);
1003
1004 static void mega_free_scb(adapter_t *, scb_t *);
1005
1006 static int megaraid_abort(Scsi_Cmnd *);
1007 static int megaraid_reset(Scsi_Cmnd *);
1008 static int megaraid_abort_and_reset(adapter_t *, Scsi_Cmnd *, int);
1009 static int megaraid_biosparam(struct scsi_device *, struct block_device *,
1010                 sector_t, int []);
1011 static int mega_print_inquiry(char *, char *);
1012
1013 static int mega_build_sglist (adapter_t *adapter, scb_t *scb,
1014                               u32 *buffer, u32 *length);
1015 static int __mega_busywait_mbox (adapter_t *);
1016 static void mega_rundoneq (adapter_t *);
1017 static void mega_cmd_done(adapter_t *, u8 [], int, int);
1018 static inline void mega_free_sgl (adapter_t *adapter);
1019 static void mega_8_to_40ld (mraid_inquiry *inquiry,
1020                 mega_inquiry3 *enquiry3, mega_product_info *);
1021
1022 static int megadev_open (struct inode *, struct file *);
1023 static int megadev_ioctl (struct inode *, struct file *, unsigned int,
1024                 unsigned long);
1025 static int mega_m_to_n(void __user *, nitioctl_t *);
1026 static int mega_n_to_m(void __user *, megacmd_t *);
1027
1028 static int mega_init_scb (adapter_t *);
1029
1030 static int mega_is_bios_enabled (adapter_t *);
1031
1032 #ifdef CONFIG_PROC_FS
1033 static void mega_create_proc_entry(int, struct proc_dir_entry *);
1034 static int proc_read_config(char *, char **, off_t, int, int *, void *);
1035 static int proc_read_stat(char *, char **, off_t, int, int *, void *);
1036 static int proc_read_mbox(char *, char **, off_t, int, int *, void *);
1037 static int proc_rebuild_rate(char *, char **, off_t, int, int *, void *);
1038 static int proc_battery(char *, char **, off_t, int, int *, void *);
1039 static int proc_pdrv_ch0(char *, char **, off_t, int, int *, void *);
1040 static int proc_pdrv_ch1(char *, char **, off_t, int, int *, void *);
1041 static int proc_pdrv_ch2(char *, char **, off_t, int, int *, void *);
1042 static int proc_pdrv_ch3(char *, char **, off_t, int, int *, void *);
1043 static int proc_pdrv(adapter_t *, char *, int);
1044 static int proc_rdrv_10(char *, char **, off_t, int, int *, void *);
1045 static int proc_rdrv_20(char *, char **, off_t, int, int *, void *);
1046 static int proc_rdrv_30(char *, char **, off_t, int, int *, void *);
1047 static int proc_rdrv_40(char *, char **, off_t, int, int *, void *);
1048 static int proc_rdrv(adapter_t *, char *, int, int);
1049 #endif
1050
1051 static int mega_adapinq(adapter_t *, dma_addr_t);
1052 static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
1053
1054 static int mega_support_ext_cdb(adapter_t *);
1055 static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
1056                 Scsi_Cmnd *, int, int);
1057 static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
1058                 scb_t *, Scsi_Cmnd *, int, int);
1059 static void mega_enum_raid_scsi(adapter_t *);
1060 static void mega_get_boot_drv(adapter_t *);
1061 static int mega_support_random_del(adapter_t *);
1062 static int mega_del_logdrv(adapter_t *, int);
1063 static int mega_do_del_logdrv(adapter_t *, int);
1064 static void mega_get_max_sgl(adapter_t *);
1065 static int mega_internal_command(adapter_t *, lockscope_t, megacmd_t *,
1066                 mega_passthru *);
1067 static void mega_internal_done(Scsi_Cmnd *);
1068 static int mega_support_cluster(adapter_t *);
1069 #endif
1070
1071 /* vi: set ts=8 sw=8 tw=78: */