1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_SCSI_TARGETS_STDEF_H 28 #define _SYS_SCSI_TARGETS_STDEF_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/sunddi.h> 33 #include <sys/note.h> 34 #include <sys/condvar.h> 35 #include <sys/kstat.h> 36 #include <sys/scsi/scsi_types.h> 37 #include <sys/mtio.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * Defines for SCSI tape drives. 45 */ 46 47 /* 48 * Maximum variable length record size for a single request 49 */ 50 #define ST_MAXRECSIZE_VARIABLE 65535 51 52 /* 53 * If the requested record size exceeds ST_MAXRECSIZE_VARIABLE, 54 * then the following define is used. 55 */ 56 #define ST_MAXRECSIZE_VARIABLE_LIMIT 65534 57 58 #define ST_MAXRECSIZE_FIXED (63<<10) /* maximum fixed record size */ 59 #define INF 1000000000 60 61 /* 62 * Supported tape device types plus default type for opening. 63 * Types 10 - 13, are special (ancient too) drives - *NOT SUPPORTED* 64 * Types 14 - 1f, are 1/4-inch cartridge drives. 65 * Types 20 - 28, are 1/2-inch cartridge or reel drives. 66 * Types 28+, are rdat (vcr) drives. 67 */ 68 #define ST_TYPE_INVALID 0x00 69 70 #define ST_TYPE_SYSGEN1 MT_ISSYSGEN11 /* Sysgen with QIC-11 only */ 71 #define ST_TYPE_SYSGEN MT_ISSYSGEN /* Sysgen with QIC-24 and QIC-11 */ 72 73 #define ST_TYPE_DEFAULT MT_ISDEFAULT /* Generic 1/4" or undetermined */ 74 #define ST_TYPE_EMULEX MT_ISMT02 /* Emulex MT-02 */ 75 #define ST_TYPE_ARCHIVE MT_ISVIPER1 /* Archive QIC-150 */ 76 #define ST_TYPE_WANGTEK MT_ISWANGTEK1 /* Wangtek QIC-150 */ 77 78 #define ST_TYPE_CDC MT_ISCDC /* CDC - (not tested) */ 79 #define ST_TYPE_FUJI MT_ISFUJI /* Fujitsu - (not tested) */ 80 #define ST_TYPE_KENNEDY MT_ISKENNEDY /* Kennedy */ 81 #define ST_TYPE_ANRITSU MT_ISANRITSU /* Anritsu */ 82 #define ST_TYPE_HP MT_ISHP /* HP */ 83 #define ST_TYPE_HIC MT_ISCCS23 /* Generic 1/2" Cartridge */ 84 #define ST_TYPE_REEL MT_ISCCS24 /* Generic 1/2" Reel Tape */ 85 #define ST_TYPE_DAT MT_ISCCS28 /* Generic DAT Tape */ 86 87 #define ST_TYPE_EXABYTE MT_ISEXABYTE /* Exabyte 8200 */ 88 #define ST_TYPE_EXB8500 MT_ISEXB8500 /* Exabyte 8500 */ 89 #define ST_TYPE_WANGTHS MT_ISWANGTHS /* Wangtek 6130HS */ 90 #define ST_TYPE_WANGDAT MT_ISWANGDAT /* WangDAT */ 91 #define ST_TYPE_PYTHON MT_ISPYTHON /* Archive Python DAT */ 92 #define ST_TYPE_STC3490 MT_ISSTC /* IBM STC 3490 */ 93 #define ST_TYPE_TAND25G MT_ISTAND25G /* TANDBERG 2.5G */ 94 #define ST_TYPE_DLT MT_ISDLT /* DLT */ 95 #define ST_TYPE_STK9840 MT_ISSTK9840 /* StorageTek 9840, 9940, 9840B */ 96 #define ST_TYPE_BMDLT1 MT_ISBMDLT1 /* Benchmark DTL1 */ 97 #define ST_TYPE_LTO MT_LTO /* sun: LTO's by HP, Seagate, IBM.. */ 98 #define ST_LAST_TYPE ST_TYPE_LTO /* Add new above type and change this */ 99 100 101 /* Internal flags */ 102 #define ST_DYNAMIC 0x2000 /* Device name has been dynamically */ 103 /* alloc'ed from the st.conf entry, */ 104 /* instead of being used from the */ 105 /* st_drivetypes array. */ 106 107 /* 108 * Defines for supported drive options 109 * 110 * WARNING : THESE OPTIONS SHOULD NEVER BE CHANGED, AS OLDER CONFIGURATIONS 111 * WILL DEPEND ON THE FLAG VALUES REMAINING THE SAME 112 */ 113 #define ST_VARIABLE 0x001 /* Device supports variable */ 114 /* length record sizes */ 115 #define ST_QIC 0x002 /* QIC tape device */ 116 #define ST_REEL 0x004 /* 1/2-inch reel tape device */ 117 #define ST_BSF 0x008 /* Device supports backspace */ 118 /* file as in mt(1) bsf : */ 119 /* backspace over EOF marks. */ 120 /* Devices not supporting bsf */ 121 /* will fail with ENOTTY upon */ 122 /* use of bsf */ 123 #define ST_BSR 0x010 /* Device supports backspace */ 124 /* record as in mt(1) bsr : */ 125 /* backspace over records. If */ 126 /* the device does not support */ 127 /* bsr, the st driver emulates */ 128 /* the action by rewinding the */ 129 /* tape and using forward space */ 130 /* file (fsf) to the correct */ 131 /* file and then uses forward */ 132 /* space record (fsr) to the */ 133 /* correct record */ 134 #define ST_LONG_ERASE 0x020 /* Device needs a longer time */ 135 /* than normal to erase */ 136 #define ST_AUTODEN_OVERRIDE 0x040 /* Auto-Density override flag */ 137 /* Device can figure out the */ 138 /* tape density automatically, */ 139 /* without issuing a */ 140 /* mode-select/mode-sense */ 141 #define ST_NOBUF 0x080 /* Don't use buffered mode. */ 142 /* This disables the device's */ 143 /* ability for buffered writes */ 144 /* I.e. The device acknowledges */ 145 /* write completion after the */ 146 /* data is written to the */ 147 /* device's buffer, but before */ 148 /* all the data is actually */ 149 /* written to tape */ 150 #define ST_RESERVED_BIT1 0x100 /* resreved bit */ 151 /* parity while talking to it. */ 152 #define ST_KNOWS_EOD 0x200 /* Device knows when EOD (End */ 153 /* of Data) has been reached. */ 154 /* If the device knows EOD, st */ 155 /* uses fast file skipping. */ 156 /* If it does not know EOD, */ 157 /* file skipping happens one */ 158 /* file at a time. */ 159 #define ST_UNLOADABLE 0x400 /* Device will not complain if */ 160 /* the st driver is unloaded & */ 161 /* loaded again; e.g. will */ 162 /* return the correct inquiry */ 163 /* string */ 164 #define ST_SOFT_ERROR_REPORTING 0x800 /* Do request or log sense on */ 165 /* close to report soft errors. */ 166 /* Currently only Exabyte and */ 167 /* DAT drives support this */ 168 /* feature. */ 169 #define ST_LONG_TIMEOUTS 0x1000 /* Device needs 5 times longer */ 170 /* timeouts for normal */ 171 /* operation */ 172 #define ST_BUFFERED_WRITES 0x4000 /* The data is buffered in the */ 173 /* driver and pre-acked to the */ 174 /* application */ 175 #define ST_NO_RECSIZE_LIMIT 0x8000 /* For variable record size */ 176 /* devices only. If flag is */ 177 /* set, then don't limit */ 178 /* record size to 64k as in */ 179 /* pre-Solaris 2.4 releases. */ 180 /* The only limit on the */ 181 /* record size will be the max */ 182 /* record size the device can */ 183 /* handle or the max DMA */ 184 /* transfer size of the */ 185 /* machine, which ever is */ 186 /* smaller. Beware of */ 187 /* incompatabilities with */ 188 /* tapes of pre-Solaris 2.4 */ 189 /* OS's written with large */ 190 /* (>64k) block sizes, as */ 191 /* their true block size is */ 192 /* a max of approx 64k */ 193 #define ST_MODE_SEL_COMP 0x10000 /* use mode select of device */ 194 /* configuration page (0x10) to */ 195 /* enable/disable compression */ 196 /* instead of density codes for */ 197 /* the "c" and "u" devices */ 198 #define ST_NO_RESERVE_RELEASE 0x20000 /* For devices which do not */ 199 /* support RESERVE/RELEASE SCSI */ 200 /* command. If this is enabled */ 201 /* then reserve/release would */ 202 /* not be used during open/ */ 203 /* close for High Availability */ 204 #define ST_READ_IGNORE_ILI 0x40000 /* This flag is only applicable */ 205 /* to variable block devices */ 206 /* which support the SILI bit */ 207 /* option. It indicates that */ 208 /* the SILI bit will be ignored */ 209 /* during reads */ 210 #define ST_READ_IGNORE_EOFS 0x80000 /* When this flag is set two */ 211 /* EOF marks do not indicate an */ 212 /* EOM. This option is only */ 213 /* supported on 1/2" reel tapes */ 214 #define ST_SHORT_FILEMARKS 0x100000 /* This option applies only to */ 215 /* EXABYTE 8mm tape drives */ 216 /* which support short */ 217 /* filemarks. When this flag */ 218 /* is set, short filemarks */ 219 /* will be used for writing */ 220 /* filemarks. */ 221 #define ST_EJECT_ON_CHANGER_FAILURE 0x200000 /* When this flag is set */ 222 /* and the tape is trapped in */ 223 /* the medium changer, the tape */ 224 /* is automatically ejected */ 225 #define ST_RETRY_ON_RECOVERED_DEFERRED_ERROR 0x400000 226 /* This option applies only to */ 227 /* IBM MAGSTAR 3590. If this */ 228 /* flag is set, the st driver */ 229 /* will retry the last cmd if */ 230 /* the last error cause a check */ 231 /* condition with error code */ 232 /* 0x71 and sense code 0x01 */ 233 #define ST_KNOWS_MEDIA 0x800000 /* Use configured media type */ 234 /* detected to select correct */ 235 /* density code. */ 236 #define ST_CLN_TYPE_1 0x10000000 /* When this flag is set, */ 237 /* the tape drive provides the */ 238 /* clean bit information in */ 239 /* byte 21, bitmask 0x08 of */ 240 /* Request Sense data */ 241 #define ST_CLN_TYPE_2 0x20000000 /* When this flag is set, */ 242 /* the tape drive provides the */ 243 /* clean bit information in */ 244 /* byte 70, bitmask 0xc0 of */ 245 /* Request Sense data */ 246 #define ST_CLN_TYPE_3 0x40000000 /* When this flag is set, */ 247 /* the tape drive provides the */ 248 /* clean bit information in */ 249 /* byte 18, bitmask 0x01 of */ 250 /* Request Sense data */ 251 252 #define ST_CLN_MASK (ST_CLN_TYPE_1 | ST_CLN_TYPE_2 | ST_CLN_TYPE_3) 253 #define ST_VALID_OPTS (ST_VARIABLE | ST_QIC | ST_REEL | ST_BSF | ST_BSR |\ 254 ST_LONG_ERASE | ST_AUTODEN_OVERRIDE | ST_NOBUF | ST_KNOWS_EOD |\ 255 ST_UNLOADABLE | ST_SOFT_ERROR_REPORTING | ST_LONG_TIMEOUTS |\ 256 ST_NO_RECSIZE_LIMIT | ST_MODE_SEL_COMP | ST_NO_RESERVE_RELEASE |\ 257 ST_READ_IGNORE_ILI | ST_READ_IGNORE_EOFS | ST_SHORT_FILEMARKS |\ 258 ST_EJECT_ON_CHANGER_FAILURE | ST_RETRY_ON_RECOVERED_DEFERRED_ERROR |\ 259 ST_CLN_TYPE_1 | ST_CLN_TYPE_2 | ST_CLN_TYPE_3) 260 261 #define NDENSITIES MT_NDENSITIES 262 #define NSPEEDS MT_NSPEEDS 263 264 /* 265 * defines for Log Sense Pages 266 */ 267 #define SUPPORTED_LOG_PAGES_PAGE 0x00 268 #define TAPE_SEQUENTIAL_PAGE 0x0c 269 #define TAPE_ALERT_PAGE 0x2e 270 271 /* 272 * Log Page Control definitions 273 */ 274 #define CURRENT_THRESHOLD_VALUES 0x00 275 #define CURRENT_CUMULATIVE_VALUES 0x40 276 #define DEFAULT_THRESHOLD_VALUES 0x80 277 #define DEFAULT_CUMULATIVE_VALUES 0xC0 278 279 /* 280 * Tape Alert Flag definitions 281 */ 282 #define CLEANING_MEDIA 11 283 #define CLEAN_NOW 20 284 #define CLEAN_PERIODIC 21 285 #define CLEAN_FOR_ERRORS 24 286 287 #define TAPE_ALERT_SUPPORT_UNKNOWN 0x00 288 #define TAPE_ALERT_NOT_SUPPORTED 0x01 289 #define TAPE_ALERT_SUPPORTED 0x02 290 #define TAPE_ALERT_STILL_DIRTY 0x04 291 #define TAPE_SEQUENTIAL_SUPPORTED 0x08 292 #define TAPE_PREVIOUSLY_DIRTY 0x10 293 294 #define TAPE_ALERT_MAX_PARA 64 295 #define TAPE_SEQUENTIAL_PAGE_PARA 64 /* way more then really used */ 296 #define SEQUENTIAL_NEED_CLN 0x0100 297 298 /* 299 * Parameters 300 */ 301 #define ST_NAMESIZE 44 /* size of pretty string for vid/pid */ 302 #define VIDLEN 8 /* size of vendor identifier length */ 303 #define PIDLEN 16 /* size of product identifier length */ 304 #define VIDPIDLEN (VIDLEN + PIDLEN) 305 306 307 struct st_drivetype { 308 char name[ST_NAMESIZE]; /* Name, for debug */ 309 char length; /* Length of vendor id */ 310 char vid[VIDPIDLEN]; /* Vendor id and model (product) id */ 311 char type; /* Drive type for driver */ 312 int bsize; /* Block size */ 313 int options; /* Drive options */ 314 int max_rretries; /* Max read retries */ 315 int max_wretries; /* Max write retries */ 316 uchar_t densities[NDENSITIES]; /* density codes, low->hi */ 317 uchar_t default_density; /* default density for this drive */ 318 uchar_t mediatype[NDENSITIES]; /* was speed. mediatype for density. */ 319 ushort_t non_motion_timeout; /* Inquiry type commands */ 320 ushort_t io_timeout; /* I/O timeout in seconds */ 321 ushort_t rewind_timeout; /* rewind timeout in seconds */ 322 ushort_t space_timeout; /* space cmd timeout in seconds */ 323 ushort_t load_timeout; /* load tape time in seconds */ 324 ushort_t unload_timeout; /* unload tape time in seconds */ 325 ushort_t erase_timeout; /* erase timeout. seconds */ 326 }; 327 328 #define MINUTES(val) ((val) * 60) 329 330 struct comp_mode_page { 331 #if defined(_BIT_FIELDS_LTOH) 332 uchar_t : 6, 333 dcc: 1, /* Data Compression Capable */ 334 dce: 1; /* Data Compression Enable */ 335 uchar_t : 5, 336 red: 2, /* Report Exceptions on Decompress */ 337 dde: 1; /* Data Decompression Enabled */ 338 uchar_t comp_alg_msb; /* Compression Algorithm */ 339 uchar_t comp_alg_high; 340 uchar_t comp_alg_low; 341 uchar_t comp_alg_lsb; 342 uchar_t decomp_alg_msb; /* Decompression Algorithm */ 343 uchar_t decomp_alg_high; 344 uchar_t decomp_alg_low; 345 uchar_t decomp_alg_lsb; 346 uchar_t reservered0; 347 uchar_t reservered1; 348 uchar_t reservered2; 349 uchar_t reservered3; 350 351 #elif defined(_BIT_FIELDS_HTOL) 352 uchar_t dce: 1, /* Data Compression Enable */ 353 dcc: 1, /* Data Compression Capable */ 354 : 6; 355 uchar_t dde: 1, /* Data Decompression Enabled */ 356 red: 2, /* Report Exceptions on Decompress */ 357 : 5; 358 uchar_t comp_alg_msb; /* Compression Algorithm */ 359 uchar_t comp_alg_high; 360 uchar_t comp_alg_low; 361 uchar_t comp_alg_lsb; 362 uchar_t decomp_alg_msb; /* Decompression Algorithm */ 363 uchar_t decomp_alg_high; 364 uchar_t decomp_alg_low; 365 uchar_t decomp_alg_lsb; 366 uchar_t reservered0; 367 uchar_t reservered1; 368 uchar_t reservered2; 369 uchar_t reservered3; 370 #endif 371 }; 372 373 struct dev_mode_page { 374 #if defined(_BIT_FIELDS_LTOH) 375 uchar_t act_format: 5, /* active format */ 376 caf: 1, /* Change Active Format */ 377 cap: 1, /* Change Active Partition */ 378 : 1; 379 uchar_t act_partition; /* active partition */ 380 uchar_t wrt_buf_full_ratio; /* write buffer full ratio */ 381 uchar_t rd_buf_full_ratio; /* read buffer full ratio */ 382 uchar_t wrt_delay_time_msb; /* write delay time MSB */ 383 uchar_t wrt_delay_time_lsb; /* write delay time LSB */ 384 uchar_t rew: 1, /* Report Early Warning */ 385 rbo: 1, /* Reverse Buffer Order */ 386 socf: 2, /* Stop On Consecutive Filemarks */ 387 avc: 1, /* Automatic Velocity Control */ 388 rsmk: 1, /* Report SetMarKs */ 389 bis: 1, /* Block Ids Supported */ 390 dbr: 1; /* Data Buffer Recovery */ 391 uchar_t gap_size; 392 uchar_t : 3, 393 sew: 1, /* Sync data after Early Warning */ 394 eeg: 1, /* Enable Early Waring */ 395 eod_defined: 3; 396 uchar_t buf_size_leot_msb; /* Buffer size after early warning */ 397 uchar_t buf_size_leot_mid; 398 uchar_t buf_size_leot_lsb; 399 uchar_t comp_alg; /* Compression Algorithm (enable) */ 400 uchar_t reservered; 401 402 #elif defined(_BIT_FIELDS_HTOL) 403 uchar_t : 1, 404 cap: 1, /* Change Active Partition */ 405 caf: 1, /* Change Active Format */ 406 act_format: 5; /* active format */ 407 uchar_t act_partition; /* active partition */ 408 uchar_t wrt_buf_full_ratio; /* write buffer full ratio */ 409 uchar_t rd_buf_full_ratio; /* read buffer full ratio */ 410 uchar_t wrt_delay_time_msb; /* write delay time MSB */ 411 uchar_t wrt_delay_time_lsb; /* write delay time LSB */ 412 uchar_t dbr: 1, /* Data Buffer Recovery */ 413 bis: 1, /* Block Ids Supported */ 414 rsmk: 1, /* Report SetMarKs */ 415 avc: 1, /* Automatic Velocity Control */ 416 socf: 2, /* Stop On Consecutive Filemarks */ 417 rbo: 1, /* Reverse Buffer Order */ 418 rew: 1; /* Report Early Warning */ 419 uchar_t gap_size; 420 uchar_t eod_defined: 3, 421 eeg: 1, /* Enable Early Waring */ 422 sew: 1, /* Sync data after Early Warning */ 423 : 3; 424 uchar_t buf_size_leot_msb; /* Buffer size after early warning */ 425 uchar_t buf_size_leot_mid; 426 uchar_t buf_size_leot_lsb; 427 uchar_t comp_alg; /* Compression Algorithm (enable) */ 428 uchar_t reservered; 429 #endif 430 }; 431 432 typedef union { 433 struct comp_mode_page comp; 434 struct dev_mode_page dev; 435 }modepage; 436 437 /* 438 * 439 * Parameter list for the MODE_SELECT and MODE_SENSE commands. 440 * The parameter list contains a header, followed by zero or more 441 * block descriptors, followed by vendor unique parameters, if any. 442 * 443 */ 444 #define MSIZE 0x0c /* Size without additional pages */ 445 struct seq_mode { 446 #if defined(_BIT_FIELDS_LTOH) 447 uchar_t data_len; /* sense data length, sense only */ 448 uchar_t media_type; /* medium type, sense only */ 449 uchar_t speed :4, /* speed */ 450 bufm :3, /* buffered mode */ 451 wp :1; /* write protected, sense only */ 452 uchar_t bd_len; /* block length in bytes */ 453 uchar_t density; /* density code */ 454 uchar_t high_nb; /* number of logical blocks on the medium */ 455 uchar_t mid_nb; /* that are to be formatted with the density */ 456 uchar_t low_nb; /* code and block length in block descriptor */ 457 uchar_t reserved; /* reserved */ 458 uchar_t high_bl; /* block length */ 459 uchar_t mid_bl; /* " " */ 460 uchar_t low_bl; /* " " */ 461 uchar_t page_code: 6, 462 : 1, 463 ps: 1; /* Page Savable sense only */ 464 uchar_t page_len; 465 modepage page; 466 467 #elif defined(_BIT_FIELDS_HTOL) 468 uchar_t data_len; /* sense data length, sense only */ 469 uchar_t media_type; /* medium type, sense only */ 470 uchar_t wp :1, /* write protected, sense only */ 471 bufm :3, /* buffered mode */ 472 speed :4; /* speed */ 473 uchar_t bd_len; /* block length in bytes */ 474 uchar_t density; /* density code */ 475 uchar_t high_nb; /* number of logical blocks on the medium */ 476 uchar_t mid_nb; /* that are to be formatted with the density */ 477 uchar_t low_nb; /* code and block length in block descriptor */ 478 uchar_t reserved; /* reserved */ 479 uchar_t high_bl; /* block length */ 480 uchar_t mid_bl; /* " " */ 481 uchar_t low_bl; /* " " */ 482 uchar_t ps: 1, /* Page Savable sense only */ 483 : 1, 484 page_code: 6; 485 uchar_t page_len; 486 modepage page; 487 #else 488 #error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined 489 #endif /* _BIT_FIELDS_LTOH */ 490 }; 491 492 /* 493 * Data returned from the READ BLOCK LIMITS command. 494 */ 495 496 #define RBLSIZE (sizeof (struct read_blklim)) 497 struct read_blklim { 498 #if defined(_BIT_FIELDS_HTOL) 499 uchar_t reserved: 3; /* reserved */ 500 uchar_t granularity: 5; /* Minimum Modularity */ 501 #elif defined(_BIT_FIELDS_LTOH) 502 uchar_t granularity: 5; /* Minimum Modularity */ 503 uchar_t reserved: 3; /* reserved */ 504 #endif 505 uchar_t max_hi; /* Maximum block length, high byte */ 506 uchar_t max_mid; /* Maximum block length, middle byte */ 507 uchar_t max_lo; /* Maximum block length, low byte */ 508 uchar_t min_hi; /* Minimum block length, high byte */ 509 uchar_t min_lo; /* Minimum block length, low byte */ 510 }; 511 512 #ifdef _KERNEL 513 514 #if defined(__i386) || defined(__amd64) 515 /* Data structure used in big block I/O on x86/x64 platform */ 516 517 /* 518 * alloc more than one contig_mem, so mutiple I/O can be 519 * on-going simultaneously 520 */ 521 #define ST_MAX_CONTIG_MEM_NUM 3 522 523 /* 524 * 60K is used due to the limitation(size) of the intermediate buffer 525 * in DMA bind code(rootnex.c), which is 64K. If the I/O buf is page 526 * aligned, HBA can do 64K DMA, but if not, HBA can only do 527 * 64K - PAGESIZE = 60K DMA due to the copy to/from intermediate 528 * buffer will keep the page offset. 529 */ 530 #define ST_BIGBLK_XFER 60 * 1024 531 struct contig_mem { 532 struct contig_mem *cm_next; 533 size_t cm_len; 534 caddr_t cm_addr; 535 ddi_acc_handle_t cm_acc_hdl; 536 struct buf *cm_bp; 537 int cm_use_sbuf; 538 }; 539 #endif 540 541 #endif /* _KERNEL */ 542 543 /* 544 * Private info for scsi tapes. Pointed to by the un_private pointer 545 * of one of the SCSI_DEVICE chains. 546 */ 547 548 struct scsi_tape { 549 struct scsi_device *un_sd; /* back pointer to SCSI_DEVICE */ 550 struct scsi_pkt *un_rqs; /* ptr to request sense command */ 551 struct scsi_pkt *un_mkr_pkt; /* ptr to marker packet */ 552 kcondvar_t un_sbuf_cv; /* cv on ownership of special buf */ 553 kcondvar_t un_queue_cv; /* cv on all queued commands */ 554 struct buf *un_sbufp; /* for use in special io */ 555 char *un_srqbufp; /* sense buffer for special io */ 556 kcondvar_t un_clscv; /* closing cv */ 557 struct buf *un_quef; /* head of wait queue */ 558 struct buf *un_quel; /* tail of wait queue */ 559 struct buf *un_runqf; /* head of run queue */ 560 struct buf *un_runql; /* tail of run queue */ 561 struct seq_mode *un_mspl; /* ptr to mode select info */ 562 struct st_drivetype *un_dp; /* ptr to drive table entry */ 563 uint_t un_dp_size; /* size of un_dp alloc'ed */ 564 caddr_t un_tmpbuf; /* buf for append, autodens ops */ 565 daddr_t un_blkno; /* block # in file (512 byte blocks) */ 566 int un_oflags; /* open flags */ 567 int un_fileno; /* current file number on tape */ 568 int un_err_fileno; /* file where error occurred */ 569 daddr_t un_err_blkno; /* block in file where err occurred */ 570 uint_t un_err_resid; /* resid from last error */ 571 short un_fmneeded; /* filemarks to be written - HP only */ 572 dev_t un_dev; /* unix device */ 573 uchar_t un_attached; /* unit known && attached */ 574 int un_pwr_mgmt; /* power management state */ 575 uchar_t un_density_known; /* density is known */ 576 uchar_t un_curdens; /* index into density table */ 577 uchar_t un_lastop; /* last I/O was: read/write/ctl */ 578 uchar_t un_eof; /* eof states */ 579 uchar_t un_laststate; /* last state */ 580 uchar_t un_state; /* current state */ 581 uchar_t un_status; /* status from last sense */ 582 uchar_t un_retry_ct; /* retry count */ 583 uchar_t un_tran_retry_ct; /* transport retry count */ 584 uchar_t un_read_only; /* 1 == opened O_RDONLY */ 585 uchar_t un_test_append; /* check writing at end of tape */ 586 uchar_t un_arq_enabled; /* auto request sense enabled */ 587 uchar_t un_untagged_qing; /* hba has untagged quing */ 588 uchar_t un_allow_large_xfer; /* allow >64k xfers if requested */ 589 uchar_t un_sbuf_busy; /* sbuf busy flag */ 590 uchar_t un_ncmds; /* number of commands outstanding */ 591 uchar_t un_throttle; /* curr. max number of cmds outst. */ 592 uchar_t un_last_throttle; /* saved max number of cmds outst. */ 593 uchar_t un_max_throttle; /* max poss. number cmds outstanding */ 594 uchar_t un_persistence; /* 1 = persistence on, 0 off */ 595 uchar_t un_persist_errors; /* 1 = persistenced flagged */ 596 uchar_t un_flush_on_errors; /* HBA will flush all I/O's on a */ 597 /* check condidtion or error */ 598 uint_t un_kbytes_xferred; /* bytes (in K) counter */ 599 uint_t un_last_resid; /* keep last resid, for PE */ 600 uint_t un_last_count; /* keep last count, for PE */ 601 struct kstat *un_stats; /* for I/O statistics */ 602 struct buf *un_rqs_bp; /* bp used in rqpkt */ 603 struct buf *un_wf; /* head of write queue */ 604 struct buf *un_wl; /* tail of write queue */ 605 struct read_blklim *un_rbl; /* ptr to read block limit info */ 606 int un_maxdma; /* max dma xfer allowed by HBA */ 607 uint_t un_bsize; /* block size currently being used */ 608 int un_maxbsize; /* max block size allowed by drive */ 609 uint_t un_minbsize; /* min block size allowed by drive */ 610 int un_errno; /* errno (b_error) */ 611 kcondvar_t un_state_cv; /* mediastate condition variable */ 612 enum mtio_state un_mediastate; /* current media state */ 613 enum mtio_state un_specified_mediastate; /* expected state */ 614 timeout_id_t un_delay_tid; /* delayed cv tid */ 615 timeout_id_t un_hib_tid; /* handle interrupt busy tid */ 616 opaque_t un_swr_token; /* scsi_watch request token */ 617 uchar_t un_comp_page; /* compression page */ 618 uchar_t un_rsvd_status; /* Reservation Status */ 619 kstat_t *un_errstats; /* for error statistics */ 620 int un_init_options; /* Init time drive options */ 621 int un_save_fileno; /* Save here for recovery */ 622 daddr_t un_save_blkno; /* Save here for recovery */ 623 uchar_t un_restore_pos; /* Indication to do recovery */ 624 int un_suspend_fileno; /* Save fileno for SUSPEND */ 625 daddr_t un_suspend_blkno; /* Save blkno for SUSPEND */ 626 uchar_t un_silent_skip; /* to catch short reads */ 627 short un_tids_at_suspend; /* timeouts set at suspend */ 628 kcondvar_t un_tape_busy_cv; /* busy cv */ 629 kcondvar_t un_suspend_cv; /* busy cv */ 630 /* restore on close */ 631 uchar_t un_eject_tape_on_failure; /* 1 = eject tape, 0 = don't */ 632 uchar_t un_HeadClean; /* support and need head cleaning? */ 633 uchar_t un_rqs_state; /* see define below */ 634 caddr_t un_uscsi_rqs_buf; /* uscsi_rqs: buffer for RQS data */ 635 uchar_t un_data_mod; /* Device required data mod */ 636 637 #if defined(__i386) || defined(__amd64) 638 ddi_dma_handle_t un_contig_mem_hdl; 639 struct contig_mem *un_contig_mem; 640 int un_contig_mem_available_num; 641 int un_contig_mem_total_num; 642 kcondvar_t un_contig_mem_cv; 643 #endif 644 }; 645 /* 646 * device error kstats 647 */ 648 struct st_errstats { 649 struct kstat_named st_softerrs; 650 struct kstat_named st_harderrs; 651 struct kstat_named st_transerrs; 652 struct kstat_named st_vid; 653 struct kstat_named st_pid; 654 struct kstat_named st_revision; 655 struct kstat_named st_serial; 656 }; 657 658 /* 659 * generic log page struct 660 */ 661 struct log_page { 662 #if defined(_BIT_FIELDS_LTOH) 663 uchar_t code :6, /* page code number */ 664 :2; /* reserved */ 665 #elif defined(_BIT_FIELDS_HTOL) 666 uchar_t :2, /* reserved */ 667 code :6; /* page code number */ 668 #endif /* _BIT_FIELDS_LTOH */ 669 uchar_t reserved; /* reserved */ 670 uchar_t length_hi; /* length of bytes to follow (msb) */ 671 uchar_t length_lo; /* length of bytes to follow (lsb) */ 672 /* 673 * Log parameters follow right after this... 674 */ 675 }; 676 677 /* 678 * generic log page parameter struct 679 */ 680 struct log_param { 681 uchar_t pc_hi; /* parameter code (msb) */ 682 uchar_t pc_lo; /* parameter code (lsb) */ 683 #if defined(_BIT_FIELDS_LTOH) 684 uchar_t lp : 1, /* list parameter */ 685 : 1, /* reserved */ 686 tmc : 2, /* threshold met criteria */ 687 etc : 1, /* enable threshold comparison */ 688 tsd : 1, /* target save disable */ 689 ds : 1, /* disable save */ 690 du : 1; /* disable update */ 691 #elif defined(_BIT_FIELDS_HTOL) 692 uchar_t du : 1, /* disable update */ 693 ds : 1, /* disable save */ 694 tsd : 1, /* target save disable */ 695 etc : 1, /* enable threshold comparison */ 696 tmc : 2, /* threshold met criteria */ 697 : 1, /* reserved */ 698 lp : 1; /* list parameter */ 699 #endif /* _BIT_FIELDS_LTOH */ 700 uchar_t length; /* length of bytes to follow */ 701 /* 702 * Parameter values follow right after this... 703 */ 704 }; 705 /* 706 * TapeAlert structures 707 */ 708 709 struct st_tape_alert_parameter { 710 struct log_param log_param; 711 uchar_t param_value; 712 }; 713 714 struct st_tape_alert { 715 struct log_page log_page; 716 struct st_tape_alert_parameter param[TAPE_ALERT_MAX_PARA]; 717 }; 718 719 #define TAPE_ALERT_PARAMETER_LENGTH \ 720 (sizeof (struct st_tape_alert_parameter)) * TAPE_ALERT_MAX_PARA 721 722 struct log_sequential_page_parameter { 723 struct log_param log_param; 724 uchar_t param_value[8]; 725 }; 726 727 struct log_sequential_page { 728 struct log_page log_page; 729 struct log_sequential_page_parameter param[TAPE_SEQUENTIAL_PAGE_PARA]; 730 }; 731 732 #if !defined(__lint) 733 _NOTE(MUTEX_PROTECTS_DATA(scsi_device::sd_mutex, scsi_tape)) 734 _NOTE(SCHEME_PROTECTS_DATA("stable data", scsi_tape::un_dp)) 735 _NOTE(SCHEME_PROTECTS_DATA("stable data", scsi_tape::un_sd)) 736 _NOTE(SCHEME_PROTECTS_DATA("not shared", scsi_tape::un_rqs)) 737 _NOTE(DATA_READABLE_WITHOUT_LOCK(scsi_tape::un_bsize)) 738 _NOTE(SCHEME_PROTECTS_DATA("not shared", scsi_arq_status)) 739 _NOTE(SCHEME_PROTECTS_DATA("save sharing", 740 scsi_tape::un_allow_large_xfer 741 scsi_tape::un_maxbsize 742 scsi_tape::un_maxdma 743 )) 744 #endif 745 746 747 /* 748 * driver states.. 749 */ 750 #define ST_STATE_CLOSED 0 751 #define ST_STATE_OFFLINE 1 752 #define ST_STATE_INITIALIZING 2 753 #define ST_STATE_OPENING 3 754 #define ST_STATE_OPEN_PENDING_IO 4 755 #define ST_STATE_APPEND_TESTING 5 756 #define ST_STATE_OPEN 6 757 #define ST_STATE_RESOURCE_WAIT 7 758 #define ST_STATE_CLOSING 8 759 #define ST_STATE_SENSING 9 760 #define ST_STATE_CLOSE_PENDING_OPEN 10 761 762 /* 763 * Power management state 764 */ 765 #define ST_PWR_NORMAL 0 766 #define ST_PWR_SUSPENDED 1 767 768 /* 769 * operation codes 770 */ 771 772 #define ST_OP_NIL 0 773 #define ST_OP_CTL 1 774 #define ST_OP_READ 2 775 #define ST_OP_WRITE 3 776 #define ST_OP_WEOF 4 777 778 /* 779 * eof/eot/eom codes. 780 */ 781 782 #define ST_NO_EOF 0x00 783 #define ST_EOF_PENDING 0x01 /* filemark pending */ 784 #define ST_EOF 0x02 /* at filemark */ 785 #define ST_EOT_PENDING 0x03 /* logical eot pending */ 786 #define ST_EOT 0x04 /* at logical eot */ 787 #define ST_EOM 0x05 /* at physical eot */ 788 #define ST_WRITE_AFTER_EOM 0x06 /* flag for allowing writes after EOM */ 789 790 #define IN_EOF(un) (un->un_eof == ST_EOF_PENDING || un->un_eof == ST_EOF) 791 792 /* un_rqs_state codes */ 793 794 #define ST_RQS_OVR 0x1 /* RQS data was overwritten */ 795 #define ST_RQS_VALID 0x2 /* RQS data is valid */ 796 #define ST_RQS_READ 0x4 /* RQS data was read */ 797 #define ST_RQS_ERROR 0x8 /* RQS resulted in an EIO */ 798 799 /* 800 * stintr codes 801 */ 802 803 #define COMMAND_DONE 0 804 #define COMMAND_DONE_ERROR 1 805 #define COMMAND_DONE_ERROR_RECOVERED 2 806 #define QUE_COMMAND 3 807 #define QUE_BUSY_COMMAND 4 808 #define QUE_SENSE 5 809 #define JUST_RETURN 6 810 #define COMMAND_DONE_EACCES 7 811 #define QUE_LAST_COMMAND 8 812 813 814 /* 815 * Reservation Status 816 * 817 * ST_INIT_RESERVE -Used to check if the reservation has been lost 818 * in between opens and also to indicate the reservation 819 * has not been done till now. 820 * ST_RELEASE -Tape Unit is Released. 821 * ST_RESERVE -Tape Unit is Reserved. 822 * ST_PRESERVE_RESERVE -Reservation is to be preserved across opens. 823 * 824 */ 825 #define ST_INIT_RESERVE 0x001 826 #define ST_RELEASE 0x002 827 #define ST_RESERVE 0x004 828 #define ST_PRESERVE_RESERVE 0x008 829 #define ST_RESERVATION_CONFLICT 0x010 830 #define ST_LOST_RESERVE 0x020 831 832 #define ST_RESERVE_SUPPORTED(un) \ 833 ((un->un_dp->options & ST_NO_RESERVE_RELEASE) == 0) 834 835 #define ST_RESERVATION_DELAY 500000 836 837 /* 838 * Asynch I/O tunables 839 */ 840 #define ST_MAX_THROTTLE 4 841 842 /* 843 * 60 minutes seems a reasonable amount of time 844 * to wait for tape space operations to complete. 845 * 846 */ 847 #define ST_SPACE_TIME MINUTES(60) /* 60 minutes per space operation */ 848 #define ST_LONG_SPACE_TIME_X 5 /* multipiler for long space ops */ 849 850 /* 851 * 2 minutes seems a reasonable amount of time 852 * to wait for tape i/o operations to complete. 853 * 854 */ 855 #define ST_IO_TIME MINUTES(2) /* minutes per i/o */ 856 #define ST_LONG_TIMEOUT_X 5 /* multiplier for very long timeouts */ 857 858 859 /* 860 * 10 seconds is what we'll wait if we get a Busy Status back 861 */ 862 #define ST_STATUS_BUSY_TIMEOUT 10*hz /* seconds Busy Waiting */ 863 #define ST_TRAN_BUSY_TIMEOUT 1*hz /* seconds retry on TRAN_BSY */ 864 #define ST_INTERRUPT_CONTEXT 1 865 #define ST_START_CONTEXT 2 866 867 /* 868 * Number of times we'll retry a normal operation. 869 * 870 * XXX This includes retries due to transport failure as well as 871 * XXX busy timeouts- Need to distinguish between Target and Transport 872 * XXX failure. 873 */ 874 875 #define ST_RETRY_COUNT 20 876 877 /* 878 * Number of times to retry a failed selection 879 */ 880 #define ST_SEL_RETRY_COUNT 2 881 882 /* 883 * es_code value for deferred error 884 * should be moved to sense.h 885 */ 886 887 #define ST_DEFERRED_ERROR 0x01 888 889 /* 890 * Maximum number of units (determined by minor device byte) 891 */ 892 #define ST_MAXUNIT 128 893 894 /* 895 * Time to wait for completion of a command before cancelling it. 896 * For SUSPEND use only 897 */ 898 #define ST_WAIT_CMDS_COMPLETE 10 /* seconds */ 899 900 #ifndef SECSIZE 901 #define SECSIZE 512 902 #endif 903 #ifndef SECDIV 904 #define SECDIV 9 905 #endif 906 907 /* 908 * convenient defines 909 */ 910 #define ST_SCSI_DEVP (un->un_sd) 911 #define ST_DEVINFO (ST_SCSI_DEVP->sd_dev) 912 #define ST_INQUIRY (ST_SCSI_DEVP->sd_inq) 913 #define ST_RQSENSE (ST_SCSI_DEVP->sd_sense) 914 #define ST_MUTEX (&ST_SCSI_DEVP->sd_mutex) 915 #define ROUTE (&ST_SCSI_DEVP->sd_address) 916 917 #define BSD_BEHAVIOR (getminor(un->un_dev) & MT_BSD) 918 #define SVR4_BEHAVIOR ((getminor(un->un_dev) & MT_BSD) == 0) 919 #define SCBP(pkt) ((struct scsi_status *)(pkt)->pkt_scbp) 920 #define SCBP_C(pkt) ((*(pkt)->pkt_scbp) & STATUS_MASK) 921 #define CDBP(pkt) ((union scsi_cdb *)(pkt)->pkt_cdbp) 922 #define BP_PKT(bp) ((struct scsi_pkt *)(bp)->av_back) 923 #define SET_BP_PKT(bp, pkt) ((bp)->av_back = (struct buf *)(pkt)) 924 #define BP_UCMD(bp) ((struct uscsi_cmd *)(bp)->b_back) 925 #define USCSI_CMD(bp) (((bp) == un->un_sbufp) && (BP_UCMD(bp))) 926 927 #define IS_CLOSING(un) ((un)->un_state == ST_STATE_CLOSING || \ 928 ((un)->un_state == ST_STATE_SENSING && \ 929 (un)->un_laststate == ST_STATE_CLOSING)) 930 931 #define ASYNC_CMD 0 932 #define SYNC_CMD 1 933 934 /* 935 * Flush tape wait queue as needed. 936 */ 937 938 #define IS_PE_FLAG_SET(un) ((un)->un_persistence && (un)->un_persist_errors) 939 940 #define TURN_PE_ON(un) st_turn_pe_on(un) 941 #define TURN_PE_OFF(un) st_turn_pe_off(un) 942 #define SET_PE_FLAG(un) st_set_pe_flag(un) 943 #define CLEAR_PE(un) st_clear_pe(un) 944 945 #define st_bioerror(bp, error) \ 946 { bioerror(bp, error); \ 947 un->un_errno = error; } 948 949 /* 950 * Macros for internal coding of count for SPACE command: 951 * 952 * Isfmk is 1 when spacing filemarks; 0 when spacing records: 953 * bit 24 set indicates a space filemark command. 954 * Fmk sets the filemark bit (24) and changes a backspace 955 * count into a positive number with the sign bit set. 956 * Blk changes a backspace count into a positive number with 957 * the sign bit set. 958 * space_cnt converts backwards counts to negative numbers. 959 */ 960 #define Isfmk(x) ((x & (1<<24)) != 0) 961 #define Fmk(x) ((1<<24)|((x < 0) ? ((-(x)) | (1<<30)): x)) 962 #define Blk(x) ((x < 0)? ((-(x))|(1<<30)): x) 963 #define space_cnt(x) (((x) & (1<<30))? (-((x)&((1<<24)-1))):(x)&((1<<24)-1)) 964 965 966 #define GET_SOFT_STATE(dev) \ 967 register struct scsi_tape *un; \ 968 register int instance; \ 969 \ 970 instance = MTUNIT(dev); \ 971 if ((un = ddi_get_soft_state(st_state, instance)) == NULL) \ 972 return (ENXIO); 973 974 /* 975 * Debugging turned on via conditional compilation switch -DSTDEBUG 976 */ 977 #ifdef DEBUG 978 #define STDEBUG 979 #endif 980 981 #ifdef STDEBUG 982 #define DEBUGGING ((scsi_options & SCSI_DEBUG_TGT) || st_debug > 1) 983 984 985 #define ST_DEBUG1 if (st_debug >= 1) scsi_log /* initialization */ 986 #define ST_DEBUG ST_DEBUG1 987 988 #define ST_DEBUG2 if (st_debug >= 2) scsi_log /* errors and UA's */ 989 #define ST_DEBUG3 if (st_debug >= 3) scsi_log /* func calls */ 990 #define ST_DEBUG4 if (st_debug >= 4) scsi_log /* ioctl calls */ 991 #define ST_DEBUG5 if (st_debug >= 5) scsi_log 992 #define ST_DEBUG6 if (st_debug >= 6) scsi_log /* full data tracking */ 993 994 #define ST_DEBUG_SP if (st_debug == 10) scsi_log /* special cases */ 995 996 #else 997 998 #define st_debug (0) 999 #define DEBUGGING (0) 1000 #define ST_DEBUG if (0) scsi_log 1001 #define ST_DEBUG1 if (0) scsi_log 1002 #define ST_DEBUG2 if (0) scsi_log 1003 #define ST_DEBUG3 if (0) scsi_log 1004 #define ST_DEBUG4 if (0) scsi_log 1005 #define ST_DEBUG5 if (0) scsi_log 1006 #define ST_DEBUG6 if (0) scsi_log 1007 1008 #define ST_DEBUG_SP if (0) scsi_log /* special cases */ 1009 1010 #endif 1011 1012 /* 1013 * Media access values 1014 */ 1015 #define MEDIA_ACCESS_DELAY 5000000 /* usecs wait for media state change */ 1016 1017 /* 1018 * SCSI tape mode sense page information 1019 */ 1020 #define ST_DEV_CONFIG_PAGE 0x10 /* device config mode page */ 1021 #define ST_DEV_CONFIG_NO_COMP 0x00 /* use no compression */ 1022 #define ST_DEV_CONFIG_DEF_COMP 0x01 /* use default compression alg */ 1023 #define ST_COMPRESSION_DENSITY 3 /* compression minor number */ 1024 1025 /* 1026 * SCSI tape data compression Page definition. 1027 */ 1028 #define ST_DEV_DATACOMP_PAGE 0x0F /* data compression page */ 1029 1030 1031 1032 /* 1033 * maxbsize values 1034 */ 1035 #define MAXBSIZE_UNKNOWN -2 /* not found yet */ 1036 1037 #define ONE_MEG (1024 * 1024) 1038 1039 /* 1040 * generic soft error reporting 1041 * 1042 * What we are doing here is allowing a greater number of errors to occur on 1043 * smaller transfers (i.e. usually at the beginning of the tape), than on 1044 * the rest of the tape. 1045 * 1046 * A small transfer is defined as : 1047 * Transfers <= SOFT_ERROR_WARNING_THRESHOLD allow about 1.5 times more errors 1048 * 1049 * A larget tranfer is defined as : 1050 * Transfers > SOFT_ERROR_WARNING_THRESHOLD allow normal amount 1051 * 1052 */ 1053 #define READ_SOFT_ERROR_WARNING_THRESHOLD (25 * ONE_MEG) 1054 #define WRITE_SOFT_ERROR_WARNING_THRESHOLD (20 * ONE_MEG) 1055 1056 /* 1057 * soft error reporting for exabyte 1058 */ 1059 #define TAPE_SENSE_LENGTH 32 /* allows for softerror info */ 1060 1061 #define SENSE_19_BITS \ 1062 "\20\10PF\07BPE\06FPE\05ME\04ECO\03TME\02TNP\01LBOT" 1063 #define SENSE_20_BITS \ 1064 "\20\10RSVD\07RSVD\06WP\05FMKE\04URE\03WE1\02SSE\01FW" 1065 #define SENSE_21_BITS \ 1066 "\20\10RSVD\07RSVD\06RRR\05CLND\04CLN\03PEOT\02WSEB\01WSE0" 1067 1068 /* these are defined in percentages */ 1069 #define EXABYTE_WRITE_ERROR_THRESHOLD 6 1070 #define EXABYTE_READ_ERROR_THRESHOLD 3 1071 /* 1072 * minumum amount of data transfer(MB) for checking soft error rate. 1073 */ 1074 #define EXABYTE_MIN_TRANSFER (25 * ONE_MEG) 1075 1076 #define CLN 0x8 1077 #define CLND 0x10 1078 1079 /* 1080 * soft error reporting for Archive 4mm DAT 1081 */ 1082 1083 #define LOG_SENSE_LENGTH 0xff 1084 #define MIN_LOG_SENSE_LENGTH 0x2b 1085 #define DAT_SMALL_WRITE_ERROR_THRESHOLD 40 /* retries per 20 mg */ 1086 #define DAT_LARGE_WRITE_ERROR_THRESHOLD 200 /* retries for more 20 mg */ 1087 #define DAT_SMALL_READ_ERROR_THRESHOLD 5 /* errors allowed */ 1088 #define DAT_LARGE_READ_ERROR_THRESHOLD 3 /* errors allowed */ 1089 1090 /* 1091 * ST timeouts that need to be cancelled for suspend 1092 */ 1093 #define ST_HIB_TID 0x01 1094 #define ST_DELAY_TID 0x02 1095 1096 #ifdef __cplusplus 1097 } 1098 #endif 1099 1100 #endif /* _SYS_SCSI_TARGETS_STDEF_H */ 1101