twereg.h revision 76340
1/*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: head/sys/dev/twe/twereg.h 76340 2001-05-07 21:46:44Z msmith $ 28 */ 29 30/* 31 * Register names, bit definitions, structure names and members are 32 * identical with those in the Linux driver where possible and sane 33 * for simplicity's sake. (The TW_ prefix has become TWE_) 34 * Some defines that are clearly irrelevant to FreeBSD have been 35 * removed. 36 */ 37 38/* control register bit definitions */ 39#define TWE_CONTROL_CLEAR_HOST_INTERRUPT 0x00080000 40#define TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT 0x00040000 41#define TWE_CONTROL_MASK_COMMAND_INTERRUPT 0x00020000 42#define TWE_CONTROL_MASK_RESPONSE_INTERRUPT 0x00010000 43#define TWE_CONTROL_UNMASK_COMMAND_INTERRUPT 0x00008000 44#define TWE_CONTROL_UNMASK_RESPONSE_INTERRUPT 0x00004000 45#define TWE_CONTROL_CLEAR_ERROR_STATUS 0x00000200 46#define TWE_CONTROL_ISSUE_SOFT_RESET 0x00000100 47#define TWE_CONTROL_ENABLE_INTERRUPTS 0x00000080 48#define TWE_CONTROL_DISABLE_INTERRUPTS 0x00000040 49#define TWE_CONTROL_ISSUE_HOST_INTERRUPT 0x00000020 50 51#define TWE_SOFT_RESET(sc) TWE_CONTROL(sc, TWE_CONTROL_ISSUE_SOFT_RESET | \ 52 TWE_CONTROL_CLEAR_HOST_INTERRUPT | \ 53 TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT | \ 54 TWE_CONTROL_MASK_COMMAND_INTERRUPT | \ 55 TWE_CONTROL_MASK_RESPONSE_INTERRUPT | \ 56 TWE_CONTROL_CLEAR_ERROR_STATUS | \ 57 TWE_CONTROL_DISABLE_INTERRUPTS) 58 59/* status register bit definitions */ 60#define TWE_STATUS_MAJOR_VERSION_MASK 0xF0000000 61#define TWE_STATUS_MINOR_VERSION_MASK 0x0F000000 62#define TWE_STATUS_PCI_PARITY_ERROR 0x00800000 63#define TWE_STATUS_QUEUE_ERROR 0x00400000 64#define TWE_STATUS_MICROCONTROLLER_ERROR 0x00200000 65#define TWE_STATUS_PCI_ABORT 0x00100000 66#define TWE_STATUS_HOST_INTERRUPT 0x00080000 67#define TWE_STATUS_ATTENTION_INTERRUPT 0x00040000 68#define TWE_STATUS_COMMAND_INTERRUPT 0x00020000 69#define TWE_STATUS_RESPONSE_INTERRUPT 0x00010000 70#define TWE_STATUS_COMMAND_QUEUE_FULL 0x00008000 71#define TWE_STATUS_RESPONSE_QUEUE_EMPTY 0x00004000 72#define TWE_STATUS_MICROCONTROLLER_READY 0x00002000 73#define TWE_STATUS_COMMAND_QUEUE_EMPTY 0x00001000 74#define TWE_STATUS_ALL_INTERRUPTS 0x000F0000 75#define TWE_STATUS_CLEARABLE_BITS 0x00D00000 76#define TWE_STATUS_EXPECTED_BITS 0x00002000 77#define TWE_STATUS_UNEXPECTED_BITS 0x00F80000 78 79/* XXX this is a little harsh, but necessary to chase down firmware problems */ 80#define TWE_STATUS_PANIC_BITS (TWE_STATUS_MICROCONTROLLER_ERROR) 81 82/* for use with the %b printf format */ 83#define TWE_STATUS_BITS_DESCRIPTION \ 84 "\20\15CQEMPTY\16UCREADY\17RQEMPTY\20CQFULL\21RINTR\22CINTR\23AINTR\24HINTR\25PCIABRT\26MCERR\27QERR\30PCIPERR\n" 85 86/* detect inconsistencies in the status register */ 87#define TWE_STATUS_ERRORS(x) \ 88 (((x & TWE_STATUS_PCI_ABORT) || \ 89 (x & TWE_STATUS_PCI_PARITY_ERROR) || \ 90 (x & TWE_STATUS_QUEUE_ERROR) || \ 91 (x & TWE_STATUS_MICROCONTROLLER_ERROR)) && \ 92 (x & TWE_STATUS_MICROCONTROLLER_READY)) 93 94/* Response queue bit definitions */ 95#define TWE_RESPONSE_ID_MASK 0x00000FF0 96 97/* PCI related defines */ 98#define TWE_IO_CONFIG_REG 0x10 99#define TWE_DEVICE_NAME "3ware Storage Controller" 100#define TWE_VENDOR_ID 0x13C1 101#define TWE_DEVICE_ID 0x1000 102#define TWE_DEVICE_ID_ASIC 0x1001 103 104/* command packet opcodes */ 105#define TWE_OP_NOP 0x00 106#define TWE_OP_INIT_CONNECTION 0x01 107#define TWE_OP_READ 0x02 108#define TWE_OP_WRITE 0x03 109#define TWE_OP_READVERIFY 0x04 110#define TWE_OP_VERIFY 0x05 111#define TWE_OP_ZEROUNIT 0x08 112#define TWE_OP_REPLACEUNIT 0x09 113#define TWE_OP_HOTSWAP 0x0a 114#define TWE_OP_SETATAFEATURE 0x0c 115#define TWE_OP_FLUSH 0x0e 116#define TWE_OP_ABORT 0x0f 117#define TWE_OP_CHECKSTATUS 0x10 118#define TWE_OP_GET_PARAM 0x12 119#define TWE_OP_SET_PARAM 0x13 120#define TWE_OP_CREATEUNIT 0x14 121#define TWE_OP_DELETEUNIT 0x15 122#define TWE_OP_REBUILDUNIT 0x17 123#define TWE_OP_SECTOR_INFO 0x1a 124#define TWE_OP_AEN_LISTEN 0x1c 125#define TWE_OP_CMD_PACKET 0x1d 126 127/* command status values */ 128#define TWE_STATUS_RESET 0xff /* controller requests reset */ 129#define TWE_STATUS_FATAL 0xc0 /* fatal errors not requiring reset */ 130#define TWE_STATUS_WARNING 0x80 /* warnings */ 131#define TWE_STAUS_INFO 0x40 /* informative status */ 132 133/* misc defines */ 134#define TWE_ALIGNMENT 0x200 135#define TWE_MAX_UNITS 16 136#define TWE_COMMAND_ALIGNMENT_MASK 0x1ff 137#define TWE_INIT_MESSAGE_CREDITS 0xff /* older firmware has issues with 256 commands */ 138#define TWE_SHUTDOWN_MESSAGE_CREDITS 0x001 139#define TWE_INIT_COMMAND_PACKET_SIZE 0x3 140#define TWE_MAX_SGL_LENGTH 62 141#define TWE_Q_LENGTH TWE_INIT_MESSAGE_CREDITS 142#define TWE_Q_START 0 143#define TWE_MAX_RESET_TRIES 3 144#define TWE_BLOCK_SIZE 0x200 /* 512-byte blocks */ 145#define TWE_SECTOR_SIZE 0x200 /* generic I/O bufffer */ 146#define TWE_IOCTL 0x80 147#define TWE_MAX_AEN_TRIES 100 148#define TWE_UNIT_ONLINE 1 149 150/* scatter/gather list entry */ 151typedef struct 152{ 153 u_int32_t address; 154 u_int32_t length; 155} TWE_SG_Entry __attribute__ ((packed)); 156 157typedef struct { 158 u_int8_t opcode:5; /* TWE_OP_INITCONNECTION */ 159 u_int8_t res1:3; 160 u_int8_t size; 161 u_int8_t request_id; 162 u_int8_t res2:4; 163 u_int8_t host_id:4; 164 u_int8_t status; 165 u_int8_t flags; 166 u_int16_t message_credits; 167 u_int32_t response_queue_pointer; 168} TWE_Command_INITCONNECTION __attribute__ ((packed)); 169 170typedef struct 171{ 172 u_int8_t opcode:5; /* TWE_OP_READ/TWE_OP_WRITE */ 173 u_int8_t res1:3; 174 u_int8_t size; 175 u_int8_t request_id; 176 u_int8_t unit:4; 177 u_int8_t host_id:4; 178 u_int8_t status; 179 u_int8_t flags; 180 u_int16_t block_count; 181 u_int32_t lba; 182 TWE_SG_Entry sgl[TWE_MAX_SGL_LENGTH]; 183} TWE_Command_IO __attribute__ ((packed)); 184 185typedef struct 186{ 187 u_int8_t opcode:5; /* TWE_OP_HOTSWAP */ 188 u_int8_t res1:3; 189 u_int8_t size; 190 u_int8_t request_id; 191 u_int8_t unit:4; 192 u_int8_t host_id:4; 193 u_int8_t status; 194 u_int8_t flags; 195 u_int8_t action; 196#define TWE_OP_HOTSWAP_REMOVE 0x00 /* remove assumed-degraded unit */ 197#define TWE_OP_HOTSWAP_ADD_CBOD 0x01 /* add CBOD to empty port */ 198#define TWE_OP_HOTSWAP_ADD_SPARE 0x02 /* add spare to empty port */ 199 u_int8_t aport; 200} TWE_Command_HOTSWAP __attribute__ ((packed)); 201 202typedef struct 203{ 204 u_int8_t opcode:5; /* TWE_OP_SETATAFEATURE */ 205 u_int8_t res1:3; 206 u_int8_t size; 207 u_int8_t request_id; 208 u_int8_t unit:4; 209 u_int8_t host_id:4; 210 u_int8_t status; 211 u_int8_t flags; 212 u_int8_t feature; 213#define TWE_OP_SETATAFEATURE_WCE 0x02 214#define TWE_OP_SETATAFEATURE_DIS_WCE 0x82 215 u_int8_t feature_mode; 216 u_int16_t all_units; 217 u_int16_t persistence; 218} TWE_Command_SETATAFEATURE __attribute__ ((packed)); 219 220typedef struct 221{ 222 u_int8_t opcode:5; /* TWE_OP_CHECKSTATUS */ 223 u_int8_t res1:3; 224 u_int8_t size; 225 u_int8_t request_id; 226 u_int8_t unit:4; 227 u_int8_t res2:4; 228 u_int8_t status; 229 u_int8_t flags; 230 u_int16_t target_status; /* set low byte to target request's ID */ 231} TWE_Command_CHECKSTATUS __attribute__ ((packed)); 232 233typedef struct 234{ 235 u_int8_t opcode:5; /* TWE_OP_GETPARAM, TWE_OP_SETPARAM */ 236 u_int8_t res1:3; 237 u_int8_t size; 238 u_int8_t request_id; 239 u_int8_t unit:4; 240 u_int8_t host_id:4; 241 u_int8_t status; 242 u_int8_t flags; 243 u_int16_t param_count; 244 TWE_SG_Entry sgl[TWE_MAX_SGL_LENGTH]; 245} TWE_Command_PARAM __attribute__ ((packed)); 246 247typedef struct 248{ 249 u_int8_t opcode:5; /* TWE_OP_REBUILDUNIT */ 250 u_int8_t res1:3; 251 u_int8_t size; 252 u_int8_t request_id; 253 u_int8_t src_unit:4; 254 u_int8_t host_id:4; 255 u_int8_t status; 256 u_int8_t flags; 257 u_int8_t action:7; 258#define TWE_OP_REBUILDUNIT_NOP 0 259#define TWE_OP_REBUILDUNIT_STOP 2 /* stop all rebuilds */ 260#define TWE_OP_REBUILDUNIT_START 4 /* start rebuild with lowest unit */ 261#define TWE_OP_REBUILDUNIT_STARTUNIT 5 /* rebuild src_unit (not supported) */ 262 u_int8_t cs:1; /* request state change on src_unit */ 263 u_int8_t logical_subunit; /* for RAID10 rebuild of logical subunit */ 264} TWE_Command_REBUILDUNIT __attribute__ ((packed)); 265 266typedef struct 267{ 268 u_int8_t opcode:5; 269 u_int8_t sgl_offset:3; 270 u_int8_t size; 271 u_int8_t request_id; 272 u_int8_t unit:4; 273 u_int8_t host_id:4; 274 u_int8_t status; 275 u_int8_t flags; 276#define TWE_FLAGS_SUCCESS 0x00 277#define TWE_FLAGS_INFORMATIONAL 0x01 278#define TWE_FLAGS_WARNING 0x02 279#define TWE_FLAGS_FATAL 0x03 280#define TWE_FLAGS_PERCENTAGE (1<<8) /* bits 0-6 indicate completion percentage */ 281 u_int16_t count; /* block count, parameter count, message credits */ 282} TWE_Command_Generic __attribute__ ((packed)); 283 284/* command packet - must be TWE_ALIGNMENT aligned */ 285typedef union 286{ 287 TWE_Command_INITCONNECTION initconnection; 288 TWE_Command_IO io; 289 TWE_Command_PARAM param; 290 TWE_Command_CHECKSTATUS checkstatus; 291 TWE_Command_REBUILDUNIT rebuildunit; 292 TWE_Command_SETATAFEATURE setatafeature; 293 TWE_Command_Generic generic; 294 u_int8_t pad[512]; 295} TWE_Command; 296 297/* response queue entry */ 298typedef union 299{ 300 struct 301 { 302 u_int32_t undefined_1:4; 303 u_int32_t response_id:8; 304 u_int32_t undefined_2:20; 305 } u; 306 u_int32_t value; 307} TWE_Response_Queue; 308 309/* 310 * From 3ware's documentation: 311 * All parameters maintained by the controller are grouped into related tables. 312 * Tables are are accessed indirectly via get and set parameter commands. 313 * To access a specific parameter in a table, the table ID and parameter index 314 * are used to uniquely identify a parameter. Table 0xffff is the directory 315 * table and provides a list of the table IDs and sizes of all other tables. 316 * Index zero in each table specifies the entire table, and index one specifies 317 * the size of the table. An entire table can be read or set by using index zero. 318 */ 319 320#define TWE_PARAM_PARAM_ALL 0 321#define TWE_PARAM_PARAM_SIZE 1 322 323#define TWE_PARAM_DIRECTORY 0xffff /* size is 4 * number of tables */ 324#define TWE_PARAM_DIRECTORY_TABLES 2 /* 16 bits * number of tables */ 325#define TWE_PARAM_DIRECTORY_SIZES 3 /* 16 bits * number of tables */ 326 327#define TWE_PARAM_DRIVESUMMARY 0x0002 328#define TWE_PARAM_DRIVESUMMARY_Num 2 /* number of physical drives [2] */ 329#define TWE_PARAM_DRIVESUMMARY_Status 3 /* array giving drive status per aport */ 330#define TWE_PARAM_DRIVESTATUS_Missing 0x00 331#define TWE_PARAM_DRIVESTATUS_NotSupp 0xfe 332#define TWE_PARAM_DRIVESTATUS_Present 0xff 333 334#define TWE_PARAM_UNITSUMMARY 0x0003 335#define TWE_PARAM_UNITSUMMARY_Num 2 /* number of logical units [2] */ 336#define TWE_PARAM_UNITSUMMARY_Status 3 /* array giving unit status [16] */ 337#define TWE_PARAM_UNITSTATUS_Online (1<<0) 338#define TWE_PARAM_UNITSTATUS_Complete (1<<1) 339#define TWE_PARAM_UNITSTATUS_MASK 0xfc 340#define TWE_PARAM_UNITSTATUS_Normal 0xfc 341#define TWE_PARAM_UNITSTATUS_Initialising 0xf4 /* cannot be incomplete */ 342#define TWE_PARAM_UNITSTATUS_Degraded 0xec 343#define TWE_PARAM_UNITSTATUS_Rebuilding 0xdc /* cannot be incomplete */ 344#define TWE_PARAM_UNITSTATUS_Verifying 0xcc /* cannot be incomplete */ 345#define TWE_PARAM_UNITSTATUS_Corrupt 0xbc /* cannot be complete */ 346#define TWE_PARAM_UNITSTATUS_Missing 0x00 /* cannot be complete or online */ 347 348#define TWE_PARAM_DRIVEINFO 0x0200 /* add drive number 0x00-0x0f XXX docco confused 0x0100 vs 0x0200 */ 349#define TWE_PARAM_DRIVEINFO_Size 2 /* size in blocks [4] */ 350#define TWE_PARAM_DRIVEINFO_Model 3 /* drive model string [40] */ 351#define TWE_PARAM_DRIVEINFO_Serial 4 /* drive serial number [20] */ 352#define TWE_PARAM_DRIVEINFO_PhysCylNum 5 /* physical geometry [2] */ 353#define TWE_PARAM_DRIVEINFO_PhysHeadNum 6 /* [2] */ 354#define TWE_PARAM_DRIVEINFO_PhysSectorNym 7 /* [2] */ 355#define TWE_PARAM_DRIVEINFO_LogCylNum 8 /* logical geometry [2] */ 356#define TWE_PARAM_DRIVEINFO_LogHeadNum 9 /* [2] */ 357#define TWE_PARAM_DRIVEINFO_LogSectorNum 10 /* [2] */ 358#define TWE_PARAM_DRIVEINFO_UnitNum 11 /* unit number this drive is associated with or 0xff [1] */ 359#define TWE_PARAM_DRIVEINFO_DriveFlags 12 /* N/A [1] */ 360 361#define TWE_PARAM_APORTTIMEOUT 0x02c0 /* add (aport_number * 3) to parameter index */ 362#define TWE_PARAM_APORTTIMEOUT_READ 2 /* read timeouts last 24hrs [2] */ 363#define TWE_PARAM_APORTTIMEOUT_WRITE 3 /* write timeouts last 24hrs [2] */ 364#define TWE_PARAM_APORTTIMEOUT_DEGRADE 4 /* degrade threshold [2] */ 365 366#define TWE_PARAM_UNITINFO 0x0300 /* add unit number 0x00-0x0f */ 367#define TWE_PARAM_UNITINFO_Number 2 /* unit number [1] */ 368#define TWE_PARAM_UNITINFO_Status 3 /* unit status [1] */ 369#define TWE_PARAM_UNITINFO_Capacity 4 /* unit capacity in blocks [4] */ 370#define TWE_PARAM_UNITINFO_DescriptorSize 5 /* unit descriptor size + 3 bytes [2] */ 371#define TWE_PARAM_UNITINFO_Descriptor 6 /* unit descriptor, TWE_UnitDescriptor or TWE_Array_Descriptor */ 372#define TWE_PARAM_UNITINFO_Flags 7 /* unit flags [1] */ 373#define TWE_PARAM_UNITFLAGS_WCE (1<<0) 374 375#define TWE_PARAM_AEN 0x0401 376#define TWE_PARAM_AEN_UnitCode 2 /* (unit number << 8) | AEN code [2] */ 377#define TWE_AEN_QUEUE_EMPTY 0x00 378#define TWE_AEN_SOFT_RESET 0x01 379#define TWE_AEN_DEGRADED_MIRROR 0x02 /* reports unit */ 380#define TWE_AEN_CONTROLLER_ERROR 0x03 381#define TWE_AEN_REBUILD_FAIL 0x04 /* reports unit */ 382#define TWE_AEN_REBUILD_DONE 0x05 /* reports unit */ 383#define TWE_AEN_INCOMP_UNIT 0x06 /* reports unit */ 384#define TWE_AEN_INIT_DONE 0x07 /* reports unit */ 385#define TWE_AEN_UNCLEAN_SHUTDOWN 0x08 /* reports unit */ 386#define TWE_AEN_APORT_TIMEOUT 0x09 /* reports unit, rate limited to 1 per 2^16 errors */ 387#define TWE_AEN_DRIVE_ERROR 0x0a /* reports unit */ 388#define TWE_AEN_REBUILD_STARTED 0x0b /* reports unit */ 389#define TWE_AEN_QUEUE_FULL 0xff 390#define TWE_AEN_TABLE_UNDEFINED 0x15 391#define TWE_AEN_CODE(x) ((x) & 0xff) 392#define TWE_AEN_UNIT(x) ((x) >> 8) 393 394#define TWE_PARAM_VERSION 0x0402 395#define TWE_PARAM_VERSION_Mon 2 /* monitor version [16] */ 396#define TWE_PARAM_VERSION_FW 3 /* firmware version [16] */ 397#define TWE_PARAM_VERSION_BIOS 4 /* BIOSs version [16] */ 398#define TWE_PARAM_VERSION_PCB 5 /* PCB version [8] */ 399#define TWE_PARAM_VERSION_ATA 6 /* A-chip version [8] */ 400#define TWE_PARAM_VERSION_PCI 7 /* P-chip version [8] */ 401#define TWE_PARAM_VERSION_CtrlModel 8 /* N/A */ 402#define TWE_PARAM_VERSION_CtrlSerial 9 /* N/A */ 403#define TWE_PARAM_VERSION_SBufSize 10 /* N/A */ 404#define TWE_PARAM_VERSION_CompCode 11 /* compatibility code [4] */ 405 406#define TWE_PARAM_CONTROLLER 0x0403 407#define TWE_PARAM_CONTROLLER_DCBSectors 2 /* # sectors reserved for DCB per drive [2] */ 408#define TWE_PARAM_CONTROLLER_PortCount 3 /* number of drive ports [1] */ 409 410#define TWE_PARAM_FEATURES 0x404 411#define TWE_PARAM_FEATURES_DriverShutdown 2 /* set to 1 if driver supports shutdown notification [1] */ 412 413typedef struct 414{ 415 u_int8_t num_subunits; /* must be zero */ 416 u_int8_t configuration; 417#define TWE_UD_CONFIG_CBOD 0x0c /* JBOD with DCB, used for mirrors */ 418#define TWE_UD_CONFIG_SPARE 0x0d /* same as CBOD, but firmware will use as spare */ 419#define TWE_UD_CONFIG_SUBUNIT 0x0e /* drive is a subunit in an array */ 420#define TWE_UD_CONFIG_JBOD 0x0f /* plain drive */ 421 u_int8_t phys_drv_num; /* may be 0xff if port can't be determined at runtime */ 422 u_int8_t log_drv_num; /* must be zero for configuration == 0x0f */ 423 u_int32_t start_lba; 424 u_int32_t block_count; /* actual drive size if configuration == 0x0f, otherwise less DCB size */ 425} TWE_Unit_Descriptor __attribute__ ((packed)); 426 427typedef struct 428{ 429 u_int8_t flag; /* must be 0xff */ 430 u_int8_t res1; 431 u_int8_t mirunit_status[4]; /* bitmap of functional subunits in each mirror */ 432 u_int8_t res2[6]; 433} TWE_Mirror_Descriptor __attribute__ ((packed)); 434 435typedef struct 436{ 437 u_int8_t num_subunits; /* number of subunits, or number of mirror units in RAID10 */ 438 u_int8_t configuration; 439#define TWE_UD_CONFIG_RAID0 0x00 440#define TWE_UD_CONFIG_RAID1 0x01 441#define TWE_UD_CONFIG_TwinStor 0x02 442#define TWE_UD_CONFIG_RAID5 0x05 443#define TWE_UD_CONFIG_RAID10 0x06 444 u_int8_t stripe_size; 445#define TWE_UD_STRIPE_4k 0x03 446#define TWE_UD_STRIPE_8k 0x04 447#define TWE_UD_STRIPE_16k 0x05 448#define TWE_UD_STRIPE_32k 0x06 449#define TWE_UD_STRIPE_64k 0x07 450 u_int8_t log_drv_status; /* bitmap of functional subunits, or mirror units in RAID10 */ 451 u_int32_t start_lba; 452 u_int32_t block_count; /* actual drive size if configuration == 0x0f, otherwise less DCB size */ 453 TWE_Unit_Descriptor subunit[0]; /* subunit descriptors, in RAID10 mode is [mirunit][subunit] */ 454} TWE_Array_Descriptor __attribute__ ((packed)); 455 456typedef struct 457{ 458 u_int16_t table_id; 459 u_int8_t parameter_id; 460 u_int8_t parameter_size_bytes; 461 u_int8_t data[0]; 462} TWE_Param __attribute__ ((packed)); 463