sys/dev/raid/twe/twereg.h

   1 /*-
   2  * Copyright (c) 2000 Michael Smith
   3  * Copyright (c) 2003 Paul Saab
   4  * Copyright (c) 2003 Vinod Kashyap
   5  * Copyright (c) 2000 BSDi
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      $FreeBSD: src/sys/dev/twe/twereg.h,v 1.1.2.7 2004/05/12 03:33:37 vkashyap Exp $
  30  *      $DragonFly: src/sys/dev/raid/twe/twereg.h,v 1.7 2006/12/22 23:26:24 swildner Exp $
  31  */
  32
  33 /*
  34  * Register names, bit definitions, structure names and members are
  35  * identical with those in the Linux driver where possible and sane
  36  * for simplicity's sake.  (The TW_ prefix has become TWE_)
  37  * Some defines that are clearly irrelevant to FreeBSD have been
  38  * removed.
  39  */
  40
  41 /* control register bit definitions */
  42 #define TWE_CONTROL_CLEAR_HOST_INTERRUPT        0x00080000
  43 #define TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT   0x00040000
  44 #define TWE_CONTROL_MASK_COMMAND_INTERRUPT      0x00020000
  45 #define TWE_CONTROL_MASK_RESPONSE_INTERRUPT     0x00010000
  46 #define TWE_CONTROL_UNMASK_COMMAND_INTERRUPT    0x00008000
  47 #define TWE_CONTROL_UNMASK_RESPONSE_INTERRUPT   0x00004000
  48 #define TWE_CONTROL_CLEAR_ERROR_STATUS          0x00000200
  49 #define TWE_CONTROL_ISSUE_SOFT_RESET            0x00000100
  50 #define TWE_CONTROL_ENABLE_INTERRUPTS           0x00000080
  51 #define TWE_CONTROL_DISABLE_INTERRUPTS          0x00000040
  52 #define TWE_CONTROL_ISSUE_HOST_INTERRUPT        0x00000020
  53 #define TWE_CONTROL_CLEAR_PARITY_ERROR          0x00800000
  54 #define TWE_CONTROL_CLEAR_PCI_ABORT             0x00100000
  55
  56 #define TWE_SOFT_RESET(sc)      TWE_CONTROL(sc, TWE_CONTROL_ISSUE_SOFT_RESET |          \
  57                                            TWE_CONTROL_CLEAR_HOST_INTERRUPT |           \
  58                                            TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT |      \
  59                                            TWE_CONTROL_MASK_COMMAND_INTERRUPT |         \
  60                                            TWE_CONTROL_MASK_RESPONSE_INTERRUPT |        \
  61                                            TWE_CONTROL_CLEAR_ERROR_STATUS |             \
  62                                            TWE_CONTROL_DISABLE_INTERRUPTS)
  63
  64 /* status register bit definitions */
  65 #define TWE_STATUS_MAJOR_VERSION_MASK           0xF0000000
  66 #define TWE_STATUS_MINOR_VERSION_MASK           0x0F000000
  67 #define TWE_STATUS_PCI_PARITY_ERROR             0x00800000
  68 #define TWE_STATUS_QUEUE_ERROR                  0x00400000
  69 #define TWE_STATUS_MICROCONTROLLER_ERROR        0x00200000
  70 #define TWE_STATUS_PCI_ABORT                    0x00100000
  71 #define TWE_STATUS_HOST_INTERRUPT               0x00080000
  72 #define TWE_STATUS_ATTENTION_INTERRUPT          0x00040000
  73 #define TWE_STATUS_COMMAND_INTERRUPT            0x00020000
  74 #define TWE_STATUS_RESPONSE_INTERRUPT           0x00010000
  75 #define TWE_STATUS_COMMAND_QUEUE_FULL           0x00008000
  76 #define TWE_STATUS_RESPONSE_QUEUE_EMPTY         0x00004000
  77 #define TWE_STATUS_MICROCONTROLLER_READY        0x00002000
  78 #define TWE_STATUS_COMMAND_QUEUE_EMPTY          0x00001000
  79 #define TWE_STATUS_ALL_INTERRUPTS               0x000F0000
  80 #define TWE_STATUS_CLEARABLE_BITS               0x00D00000
  81 #define TWE_STATUS_EXPECTED_BITS                0x00002000
  82 #define TWE_STATUS_UNEXPECTED_BITS              0x00F80000
  83
  84 /* XXX this is a little harsh, but necessary to chase down firmware problems */
  85 #define TWE_STATUS_PANIC_BITS                   (TWE_STATUS_MICROCONTROLLER_ERROR)
  86
  87 /* for use with the %b kprintf format */
  88 #define TWE_STATUS_BITS_DESCRIPTION \
  89         "\20\15CQEMPTY\16UCREADY\17RQEMPTY\20CQFULL\21RINTR\22CINTR\23AINTR\24HINTR\25PCIABRT\26MCERR\27QERR\30PCIPERR\n"
  90
  91 /* detect inconsistencies in the status register */
  92 #define TWE_STATUS_ERRORS(x)                            \
  93         (((x & TWE_STATUS_PCI_ABORT)            ||      \
  94           (x & TWE_STATUS_PCI_PARITY_ERROR)     ||      \
  95           (x & TWE_STATUS_QUEUE_ERROR)          ||      \
  96           (x & TWE_STATUS_MICROCONTROLLER_ERROR)) &&    \
  97          (x & TWE_STATUS_MICROCONTROLLER_READY))
  98
  99 /* Response queue bit definitions */
 100 #define TWE_RESPONSE_ID_MASK            0x00000FF0
 101
 102 /* PCI related defines */
 103 #define TWE_IO_CONFIG_REG               0x10
 104 #define TWE_DEVICE_NAME                 "3ware Storage Controller"
 105 #define TWE_VENDOR_ID                   0x13C1
 106 #define TWE_DEVICE_ID                   0x1000
 107 #define TWE_DEVICE_ID_ASIC              0x1001
 108 #define TWE_PCI_CLEAR_PARITY_ERROR      0xc100
 109 #define TWE_PCI_CLEAR_PCI_ABORT         0x2000
 110
 111 /* command packet opcodes */
 112 #define TWE_OP_NOP                      0x00
 113 #define TWE_OP_INIT_CONNECTION          0x01
 114 #define TWE_OP_READ                     0x02
 115 #define TWE_OP_WRITE                    0x03
 116 #define TWE_OP_READVERIFY               0x04
 117 #define TWE_OP_VERIFY                   0x05
 118 #define TWE_OP_ZEROUNIT                 0x08
 119 #define TWE_OP_REPLACEUNIT              0x09
 120 #define TWE_OP_HOTSWAP                  0x0a
 121 #define TWE_OP_SETATAFEATURE            0x0c
 122 #define TWE_OP_FLUSH                    0x0e
 123 #define TWE_OP_ABORT                    0x0f
 124 #define TWE_OP_CHECKSTATUS              0x10
 125 #define TWE_OP_ATA_PASSTHROUGH          0x11
 126 #define TWE_OP_GET_PARAM                0x12
 127 #define TWE_OP_SET_PARAM                0x13
 128 #define TWE_OP_CREATEUNIT               0x14
 129 #define TWE_OP_DELETEUNIT               0x15
 130 #define TWE_OP_REBUILDUNIT              0x17
 131 #define TWE_OP_SECTOR_INFO              0x1a
 132 #define TWE_OP_AEN_LISTEN               0x1c
 133 #define TWE_OP_CMD_PACKET               0x1d
 134 #define TWE_OP_CMD_WITH_DATA            0x1f
 135
 136 /* command status values */
 137 #define TWE_STATUS_RESET                0xff    /* controller requests reset */
 138 #define TWE_STATUS_FATAL                0xc0    /* fatal errors not requiring reset */
 139 #define TWE_STATUS_WARNING              0x80    /* warnings */
 140 #define TWE_STAUS_INFO                  0x40    /* informative status */
 141
 142 /* misc defines */
 143 #define TWE_ALIGNMENT                   0x200
 144 #define TWE_ALIGNMASK                   (TWE_ALIGNMENT - 1)
 145 #define TWE_MAX_UNITS                   16
 146 #define TWE_COMMAND_ALIGNMENT_MASK      0x1ff
 147 #define TWE_INIT_MESSAGE_CREDITS        0xff    /* older firmware has issues with 256 commands */
 148 #define TWE_SHUTDOWN_MESSAGE_CREDITS    0x001
 149 #define TWE_INIT_COMMAND_PACKET_SIZE    0x3
 150 #define TWE_MAX_SGL_LENGTH              62
 151 #define TWE_MAX_ATA_SGL_LENGTH          60
 152 #define TWE_MAX_PASSTHROUGH             4096
 153 #define TWE_Q_LENGTH                    TWE_INIT_MESSAGE_CREDITS
 154 #define TWE_Q_START                     0
 155 #define TWE_MAX_RESET_TRIES             3
 156 #define TWE_BLOCK_SIZE                  0x200   /* 512-byte blocks */
 157 #define TWE_SECTOR_SIZE                 0x200   /* generic I/O bufffer */
 158 #define TWE_IOCTL                       0x80
 159 #define TWE_MAX_AEN_TRIES               100
 160 #define TWE_UNIT_ONLINE                 1
 161
 162 /* scatter/gather list entry */
 163 typedef struct
 164 {
 165     u_int32_t   address;
 166     u_int32_t   length;
 167 } __attribute__ ((packed)) TWE_SG_Entry;
 168
 169 typedef struct {
 170     u_int8_t    opcode:5;               /* TWE_OP_INITCONNECTION */
 171     u_int8_t    res1:3;
 172     u_int8_t    size;
 173     u_int8_t    request_id;
 174     u_int8_t    res2:4;
 175     u_int8_t    host_id:4;
 176     u_int8_t    status;
 177     u_int8_t    flags;
 178     u_int16_t   message_credits;
 179     u_int32_t   response_queue_pointer;
 180 } __attribute__ ((packed)) TWE_Command_INITCONNECTION;
 181
 182 typedef struct
 183 {
 184     u_int8_t    opcode:5;               /* TWE_OP_READ/TWE_OP_WRITE */
 185     u_int8_t    res1:3;
 186     u_int8_t    size;
 187     u_int8_t    request_id;
 188     u_int8_t    unit:4;
 189     u_int8_t    host_id:4;
 190     u_int8_t    status;
 191     u_int8_t    flags;
 192     u_int16_t   block_count;
 193     u_int32_t   lba;
 194     TWE_SG_Entry sgl[TWE_MAX_SGL_LENGTH];
 195 } __attribute__ ((packed)) TWE_Command_IO;
 196
 197 typedef struct
 198 {
 199     u_int8_t    opcode:5;               /* TWE_OP_HOTSWAP */
 200     u_int8_t    res1:3;
 201     u_int8_t    size;
 202     u_int8_t    request_id;
 203     u_int8_t    unit:4;
 204     u_int8_t    host_id:4;
 205     u_int8_t    status;
 206     u_int8_t    flags;
 207     u_int8_t    action;
 208 #define TWE_OP_HOTSWAP_REMOVE           0x00    /* remove assumed-degraded unit */
 209 #define TWE_OP_HOTSWAP_ADD_CBOD         0x01    /* add CBOD to empty port */
 210 #define TWE_OP_HOTSWAP_ADD_SPARE        0x02    /* add spare to empty port */
 211     u_int8_t    aport;
 212 } __attribute__ ((packed)) TWE_Command_HOTSWAP;
 213
 214 typedef struct
 215 {
 216     u_int8_t    opcode:5;               /* TWE_OP_SETATAFEATURE */
 217     u_int8_t    res1:3;
 218     u_int8_t    size;
 219     u_int8_t    request_id;
 220     u_int8_t    unit:4;
 221     u_int8_t    host_id:4;
 222     u_int8_t    status;
 223     u_int8_t    flags;
 224     u_int8_t    feature;
 225 #define TWE_OP_SETATAFEATURE_WCE        0x02
 226 #define TWE_OP_SETATAFEATURE_DIS_WCE    0x82
 227     u_int8_t    feature_mode;
 228     u_int16_t   all_units;
 229     u_int16_t   persistence;
 230 } __attribute__ ((packed)) TWE_Command_SETATAFEATURE;
 231
 232 typedef struct
 233 {
 234     u_int8_t    opcode:5;               /* TWE_OP_CHECKSTATUS */
 235     u_int8_t    res1:3;
 236     u_int8_t    size;
 237     u_int8_t    request_id;
 238     u_int8_t    unit:4;
 239     u_int8_t    res2:4;
 240     u_int8_t    status;
 241     u_int8_t    flags;
 242     u_int16_t   target_status;          /* set low byte to target request's ID */
 243 } __attribute__ ((packed)) TWE_Command_CHECKSTATUS;
 244
 245 typedef struct
 246 {
 247     u_int8_t    opcode:5;               /* TWE_OP_GETPARAM, TWE_OP_SETPARAM */
 248     u_int8_t    res1:3;
 249     u_int8_t    size;
 250     u_int8_t    request_id;
 251     u_int8_t    unit:4;
 252     u_int8_t    host_id:4;
 253     u_int8_t    status;
 254     u_int8_t    flags;
 255     u_int16_t   param_count;
 256     TWE_SG_Entry sgl[TWE_MAX_SGL_LENGTH];
 257 } __attribute__ ((packed)) TWE_Command_PARAM;
 258
 259 typedef struct
 260 {
 261     u_int8_t    opcode:5;               /* TWE_OP_REBUILDUNIT */
 262     u_int8_t    res1:3;
 263     u_int8_t    size;
 264     u_int8_t    request_id;
 265     u_int8_t    src_unit:4;
 266     u_int8_t    host_id:4;
 267     u_int8_t    status;
 268     u_int8_t    flags;
 269     u_int8_t    action:7;
 270 #define TWE_OP_REBUILDUNIT_NOP          0
 271 #define TWE_OP_REBUILDUNIT_STOP         2       /* stop all rebuilds */
 272 #define TWE_OP_REBUILDUNIT_START        4       /* start rebuild with lowest unit */
 273 #define TWE_OP_REBUILDUNIT_STARTUNIT    5       /* rebuild src_unit (not supported) */
 274     u_int8_t    cs:1;                           /* request state change on src_unit */
 275     u_int8_t    logical_subunit;                /* for RAID10 rebuild of logical subunit */
 276 } __attribute__ ((packed)) TWE_Command_REBUILDUNIT;
 277
 278 typedef struct
 279 {
 280     u_int8_t    opcode:5;
 281     u_int8_t    sgl_offset:3;
 282     u_int8_t    size;
 283     u_int8_t    request_id;
 284     u_int8_t    unit:4;
 285     u_int8_t    host_id:4;
 286     u_int8_t    status;
 287     u_int8_t    flags;
 288     u_int16_t   param;
 289     u_int16_t   features;
 290     u_int16_t   sector_count;
 291     u_int16_t   sector_num;
 292     u_int16_t   cylinder_lo;
 293     u_int16_t   cylinder_hi;
 294     u_int8_t    drive_head;
 295     u_int8_t    command;
 296     TWE_SG_Entry sgl[TWE_MAX_ATA_SGL_LENGTH];
 297 } __attribute__ ((packed)) TWE_Command_ATA;
 298
 299 typedef struct
 300 {
 301     u_int8_t    opcode:5;
 302     u_int8_t    sgl_offset:3;
 303     u_int8_t    size;
 304     u_int8_t    request_id;
 305     u_int8_t    unit:4;
 306     u_int8_t    host_id:4;
 307     u_int8_t    status;
 308     u_int8_t    flags;
 309 #define TWE_FLAGS_SUCCESS       0x00
 310 #define TWE_FLAGS_INFORMATIONAL 0x01
 311 #define TWE_FLAGS_WARNING       0x02
 312 #define TWE_FLAGS_FATAL         0x03
 313 #define TWE_FLAGS_PERCENTAGE    (1<<8)  /* bits 0-6 indicate completion percentage */
 314     u_int16_t   count;                  /* block count, parameter count, message credits */
 315 } __attribute__ ((packed)) TWE_Command_Generic;
 316
 317 /* command packet - must be TWE_ALIGNMENT aligned */
 318 typedef union
 319 {
 320     TWE_Command_INITCONNECTION  initconnection;
 321     TWE_Command_IO              io;
 322     TWE_Command_PARAM           param;
 323     TWE_Command_CHECKSTATUS     checkstatus;
 324     TWE_Command_REBUILDUNIT     rebuildunit;
 325     TWE_Command_SETATAFEATURE   setatafeature;
 326     TWE_Command_ATA             ata;
 327     TWE_Command_Generic         generic;
 328     u_int8_t                    pad[512];
 329 } TWE_Command;
 330
 331 /* response queue entry */
 332 typedef union
 333 {
 334     struct
 335     {
 336         u_int32_t       undefined_1:4;
 337         u_int32_t       response_id:8;
 338         u_int32_t       undefined_2:20;
 339     } u;
 340     u_int32_t   value;
 341 } TWE_Response_Queue;
 342
 343 /*
 344  * From 3ware's documentation:
 345  *   All parameters maintained by the controller are grouped into related tables.
 346  *   Tables are are accessed indirectly via get and set parameter commands.
 347  *   To access a specific parameter in a table, the table ID and parameter index
 348  *   are used to uniquely identify a parameter.  Table 0xffff is the directory
 349  *   table and provides a list of the table IDs and sizes of all other tables.
 350  *   Index zero in each table specifies the entire table, and index one specifies
 351  *   the size of the table.  An entire table can be read or set by using index zero.
 352  */
 353
 354 #define TWE_PARAM_PARAM_ALL     0
 355 #define TWE_PARAM_PARAM_SIZE    1
 356
 357 #define TWE_PARAM_DIRECTORY     0xffff                  /* size is 4 * number of tables */
 358 #define TWE_PARAM_DIRECTORY_TABLES              2       /* 16 bits * number of tables */
 359 #define TWE_PARAM_DIRECTORY_SIZES               3       /* 16 bits * number of tables */
 360
 361 #define TWE_PARAM_DRIVESUMMARY  0x0002
 362 #define TWE_PARAM_DRIVESUMMARY_Num              2       /* number of physical drives [2] */
 363 #define TWE_PARAM_DRIVESUMMARY_Status           3       /* array giving drive status per aport */
 364 #define TWE_PARAM_DRIVESTATUS_Missing   0x00
 365 #define TWE_PARAM_DRIVESTATUS_NotSupp   0xfe
 366 #define TWE_PARAM_DRIVESTATUS_Present   0xff
 367
 368 #define TWE_PARAM_UNITSUMMARY   0x0003
 369 #define TWE_PARAM_UNITSUMMARY_Num               2       /* number of logical units [2] */
 370 #define TWE_PARAM_UNITSUMMARY_Status            3       /* array giving unit status [16] */
 371 #define TWE_PARAM_UNITSTATUS_Online             (1<<0)
 372 #define TWE_PARAM_UNITSTATUS_Complete           (1<<1)
 373 #define TWE_PARAM_UNITSTATUS_MASK               0xfc
 374 #define TWE_PARAM_UNITSTATUS_Normal             0xfc
 375 #define TWE_PARAM_UNITSTATUS_Initialising       0xf4    /* cannot be incomplete */
 376 #define TWE_PARAM_UNITSTATUS_Degraded           0xec
 377 #define TWE_PARAM_UNITSTATUS_Rebuilding         0xdc    /* cannot be incomplete */
 378 #define TWE_PARAM_UNITSTATUS_Verifying          0xcc    /* cannot be incomplete */
 379 #define TWE_PARAM_UNITSTATUS_Corrupt            0xbc    /* cannot be complete */
 380 #define TWE_PARAM_UNITSTATUS_Missing            0x00    /* cannot be complete or online */
 381
 382 #define TWE_PARAM_DRIVEINFO     0x0200                  /* add drive number 0x00-0x0f XXX docco confused 0x0100 vs 0x0200 */
 383 #define TWE_PARAM_DRIVEINFO_Size                2       /* size in blocks [4] */
 384 #define TWE_PARAM_DRIVEINFO_Model               3       /* drive model string [40] */
 385 #define TWE_PARAM_DRIVEINFO_Serial              4       /* drive serial number [20] */
 386 #define TWE_PARAM_DRIVEINFO_PhysCylNum          5       /* physical geometry [2] */
 387 #define TWE_PARAM_DRIVEINFO_PhysHeadNum         6       /* [2] */
 388 #define TWE_PARAM_DRIVEINFO_PhysSectorNym       7       /* [2] */
 389 #define TWE_PARAM_DRIVEINFO_LogCylNum           8       /* logical geometry [2] */
 390 #define TWE_PARAM_DRIVEINFO_LogHeadNum          9       /* [2] */
 391 #define TWE_PARAM_DRIVEINFO_LogSectorNum        10      /* [2] */
 392 #define TWE_PARAM_DRIVEINFO_UnitNum             11      /* unit number this drive is associated with or 0xff [1] */
 393 #define TWE_PARAM_DRIVEINFO_DriveFlags          12      /* N/A [1] */
 394
 395 #define TWE_PARAM_APORTTIMEOUT  0x02c0                  /* add (aport_number * 3) to parameter index */
 396 #define TWE_PARAM_APORTTIMEOUT_READ             2       /* read timeouts last 24hrs [2] */
 397 #define TWE_PARAM_APORTTIMEOUT_WRITE            3       /* write timeouts last 24hrs [2] */
 398 #define TWE_PARAM_APORTTIMEOUT_DEGRADE          4       /* degrade threshold [2] */
 399
 400 #define TWE_PARAM_UNITINFO      0x0300                  /* add unit number 0x00-0x0f */
 401 #define TWE_PARAM_UNITINFO_Number               2       /* unit number [1] */
 402 #define TWE_PARAM_UNITINFO_Status               3       /* unit status [1] */
 403 #define TWE_PARAM_UNITINFO_Capacity             4       /* unit capacity in blocks [4] */
 404 #define TWE_PARAM_UNITINFO_DescriptorSize       5       /* unit descriptor size + 3 bytes [2] */
 405 #define TWE_PARAM_UNITINFO_Descriptor           6       /* unit descriptor, TWE_UnitDescriptor or TWE_Array_Descriptor */
 406 #define TWE_PARAM_UNITINFO_Flags                7       /* unit flags [1] */
 407 #define TWE_PARAM_UNITFLAGS_WCE                 (1<<0)
 408
 409 #define TWE_PARAM_AEN           0x0401
 410 #define TWE_PARAM_AEN_UnitCode                  2       /* (unit number << 8) | AEN code [2] */
 411 #define TWE_AEN_QUEUE_EMPTY             0x00
 412 #define TWE_AEN_SOFT_RESET              0x01
 413 #define TWE_AEN_DEGRADED_MIRROR         0x02    /* reports unit */
 414 #define TWE_AEN_CONTROLLER_ERROR        0x03
 415 #define TWE_AEN_REBUILD_FAIL            0x04    /* reports unit */
 416 #define TWE_AEN_REBUILD_DONE            0x05    /* reports unit */
 417 #define TWE_AEN_INCOMP_UNIT             0x06    /* reports unit */
 418 #define TWE_AEN_INIT_DONE               0x07    /* reports unit */
 419 #define TWE_AEN_UNCLEAN_SHUTDOWN        0x08    /* reports unit */
 420 #define TWE_AEN_APORT_TIMEOUT           0x09    /* reports unit, rate limited to 1 per 2^16 errors */
 421 #define TWE_AEN_DRIVE_ERROR             0x0a    /* reports unit */
 422 #define TWE_AEN_REBUILD_STARTED         0x0b    /* reports unit */
 423 #define TWE_AEN_QUEUE_FULL              0xff
 424 #define TWE_AEN_TABLE_UNDEFINED         0x15
 425 #define TWE_AEN_CODE(x)                 ((x) & 0xff)
 426 #define TWE_AEN_UNIT(x)                 ((x) >> 8)
 427
 428 #define TWE_PARAM_VERSION       0x0402
 429 #define TWE_PARAM_VERSION_Mon                   2       /* monitor version [16] */
 430 #define TWE_PARAM_VERSION_FW                    3       /* firmware version [16] */
 431 #define TWE_PARAM_VERSION_BIOS                  4       /* BIOSs version [16] */
 432 #define TWE_PARAM_VERSION_PCB                   5       /* PCB version [8] */
 433 #define TWE_PARAM_VERSION_ATA                   6       /* A-chip version [8] */
 434 #define TWE_PARAM_VERSION_PCI                   7       /* P-chip version [8] */
 435 #define TWE_PARAM_VERSION_CtrlModel             8       /* N/A */
 436 #define TWE_PARAM_VERSION_CtrlSerial            9       /* N/A */
 437 #define TWE_PARAM_VERSION_SBufSize              10      /* N/A */
 438 #define TWE_PARAM_VERSION_CompCode              11      /* compatibility code [4] */
 439
 440 #define TWE_PARAM_CONTROLLER    0x0403
 441 #define TWE_PARAM_CONTROLLER_DCBSectors         2       /* # sectors reserved for DCB per drive [2] */
 442 #define TWE_PARAM_CONTROLLER_PortCount          3       /* number of drive ports [1] */
 443
 444 #define TWE_PARAM_FEATURES      0x404
 445 #define TWE_PARAM_FEATURES_DriverShutdown       2       /* set to 1 if driver supports shutdown notification [1] */
 446
 447 typedef struct
 448 {
 449     u_int8_t            num_subunits;   /* must be zero */
 450     u_int8_t            configuration;
 451 #define TWE_UD_CONFIG_CBOD      0x0c    /* JBOD with DCB, used for mirrors */
 452 #define TWE_UD_CONFIG_SPARE     0x0d    /* same as CBOD, but firmware will use as spare */
 453 #define TWE_UD_CONFIG_SUBUNIT   0x0e    /* drive is a subunit in an array */
 454 #define TWE_UD_CONFIG_JBOD      0x0f    /* plain drive */
 455     u_int8_t            phys_drv_num;   /* may be 0xff if port can't be determined at runtime */
 456     u_int8_t            log_drv_num;    /* must be zero for configuration == 0x0f */
 457     u_int32_t           start_lba;
 458     u_int32_t           block_count;    /* actual drive size if configuration == 0x0f, otherwise less DCB size */
 459 } __attribute__ ((packed)) TWE_Unit_Descriptor;
 460
 461 typedef struct
 462 {
 463     u_int8_t            flag;                   /* must be 0xff */
 464     u_int8_t            res1;
 465     u_int8_t            mirunit_status[4];      /* bitmap of functional subunits in each mirror */
 466     u_int8_t            res2[6];
 467 } __attribute__ ((packed)) TWE_Mirror_Descriptor;
 468
 469 typedef struct
 470 {
 471     u_int8_t            num_subunits;   /* number of subunits, or number of mirror units in RAID10 */
 472     u_int8_t            configuration;
 473 #define TWE_UD_CONFIG_RAID0     0x00
 474 #define TWE_UD_CONFIG_RAID1     0x01
 475 #define TWE_UD_CONFIG_TwinStor  0x02
 476 #define TWE_UD_CONFIG_RAID5     0x05
 477 #define TWE_UD_CONFIG_RAID10    0x06
 478     u_int8_t            stripe_size;
 479 #define TWE_UD_STRIPE_4k        0x03
 480 #define TWE_UD_STRIPE_8k        0x04
 481 #define TWE_UD_STRIPE_16k       0x05
 482 #define TWE_UD_STRIPE_32k       0x06
 483 #define TWE_UD_STRIPE_64k       0x07
 484     u_int8_t            log_drv_status; /* bitmap of functional subunits, or mirror units in RAID10 */
 485     u_int32_t           start_lba;
 486     u_int32_t           block_count;    /* actual drive size if configuration == 0x0f, otherwise less DCB size */
 487     TWE_Unit_Descriptor subunit[0];     /* subunit descriptors, in RAID10 mode is [mirunit][subunit] */
 488 } __attribute__ ((packed)) TWE_Array_Descriptor;
 489
 490 typedef struct
 491 {
 492     u_int16_t   table_id;
 493     u_int8_t    parameter_id;
 494     u_int8_t    parameter_size_bytes;
 495     u_int8_t    data[0];
 496 } __attribute__ ((packed)) TWE_Param;
 497