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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_SCSI_TARGETS_SDDEF_H 27 #define _SYS_SCSI_TARGETS_SDDEF_H 28 29 #include <sys/dktp/fdisk.h> 30 #include <sys/note.h> 31 #include <sys/mhd.h> 32 #include <sys/cmlb.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 39 #if defined(_KERNEL) || defined(_KMEMUSER) 40 41 42 #define SD_SUCCESS 0 43 #define SD_FAILURE (-1) 44 45 #if defined(TRUE) 46 #undef TRUE 47 #endif 48 49 #if defined(FALSE) 50 #undef FALSE 51 #endif 52 53 #define TRUE 1 54 #define FALSE 0 55 56 #if defined(VERBOSE) 57 #undef VERBOSE 58 #endif 59 60 #if defined(SILENT) 61 #undef SILENT 62 #endif 63 64 65 /* 66 * Fault Injection Flag for Inclusion of Code 67 * 68 * This should only be defined when SDDEBUG is defined 69 * #if DEBUG || lint 70 * #define SD_FAULT_INJECTION 71 * #endif 72 */ 73 74 #if DEBUG || lint 75 #define SD_FAULT_INJECTION 76 #endif 77 #define VERBOSE 1 78 #define SILENT 0 79 80 /* 81 * Structures for recording whether a device is fully open or closed. 82 * Assumptions: 83 * 84 * + There are only 8 (sparc) or 16 (x86) disk slices possible. 85 * + BLK, MNT, CHR, SWP don't change in some future release! 86 */ 87 88 #if defined(_SUNOS_VTOC_8) 89 90 #define SDUNIT_SHIFT 3 91 #define SDPART_MASK 7 92 #define NSDMAP NDKMAP 93 94 #elif defined(_SUNOS_VTOC_16) 95 96 #define SDUNIT_SHIFT 6 97 #define SDPART_MASK 63 98 #define NSDMAP (NDKMAP + FD_NUMPART + 1) 99 100 #else 101 #error "No VTOC format defined." 102 #endif 103 104 105 #define SDUNIT(dev) (getminor((dev)) >> SDUNIT_SHIFT) 106 #define SDPART(dev) (getminor((dev)) & SDPART_MASK) 107 108 /* 109 * maximum number of partitions the driver keeps track of; with 110 * EFI this can be larger than the number of partitions accessible 111 * through the minor nodes. It won't be used for keeping track 112 * of open counts, partition kstats, etc. 113 */ 114 #define MAXPART (NSDMAP + 1) 115 116 /* 117 * Macro to retrieve the DDI instance number from the given buf struct. 118 * The instance number is encoded in the minor device number. 119 */ 120 #define SD_GET_INSTANCE_FROM_BUF(bp) \ 121 (getminor((bp)->b_edev) >> SDUNIT_SHIFT) 122 123 124 125 struct ocinfo { 126 /* 127 * Types BLK, MNT, CHR, SWP, 128 * assumed to be types 0-3. 129 */ 130 uint64_t lyr_open[NSDMAP]; 131 uint64_t reg_open[OTYPCNT - 1]; 132 }; 133 134 #define OCSIZE sizeof (struct ocinfo) 135 136 union ocmap { 137 uchar_t chkd[OCSIZE]; 138 struct ocinfo rinfo; 139 }; 140 141 #define lyropen rinfo.lyr_open 142 #define regopen rinfo.reg_open 143 144 145 #define SD_CDB_GROUP0 0 146 #define SD_CDB_GROUP1 1 147 #define SD_CDB_GROUP5 2 148 #define SD_CDB_GROUP4 3 149 150 struct sd_cdbinfo { 151 uchar_t sc_grpcode; /* CDB group code */ 152 uchar_t sc_grpmask; /* CDB group code mask (for cmd opcode) */ 153 uint64_t sc_maxlba; /* Maximum logical block addr. supported */ 154 uint32_t sc_maxlen; /* Maximum transfer length supported */ 155 }; 156 157 158 159 /* 160 * The following declaration are for Non-512 byte block support for the 161 * removable devices. (ex - DVD RAM, MO). 162 * wm_state: This is an enumeration for the different states for 163 * manipalating write range list during the read-modify-write-operation. 164 */ 165 typedef enum { 166 SD_WM_CHK_LIST, /* Check list for overlapping writes */ 167 SD_WM_WAIT_MAP, /* Wait for an overlapping I/O to complete */ 168 SD_WM_LOCK_RANGE, /* Lock the range of lba to be written */ 169 SD_WM_DONE /* I/O complete */ 170 } wm_state; 171 172 /* 173 * sd_w_map: Every write I/O will get one w_map allocated for it which will tell 174 * the range on the media which is being written for that request. 175 */ 176 struct sd_w_map { 177 uint_t wm_start; /* Write start location */ 178 uint_t wm_end; /* Write end location */ 179 ushort_t wm_flags; /* State of the wmap */ 180 ushort_t wm_wanted_count; /* # of threads waiting for region */ 181 void *wm_private; /* Used to store bp->b_private */ 182 struct buf *wm_bufp; /* to store buf pointer */ 183 struct sd_w_map *wm_next; /* Forward pointed to sd_w_map */ 184 struct sd_w_map *wm_prev; /* Back pointer to sd_w_map */ 185 kcondvar_t wm_avail; /* Sleep on this, while not available */ 186 }; 187 188 _NOTE(MUTEX_PROTECTS_DATA(scsi_device::sd_mutex, sd_w_map::wm_flags)) 189 190 191 /* 192 * This is the struct for the layer-private data area for the 193 * mapblocksize layer. 194 */ 195 196 struct sd_mapblocksize_info { 197 void *mbs_oprivate; /* saved value of xb_private */ 198 struct buf *mbs_orig_bp; /* ptr to original bp */ 199 struct sd_w_map *mbs_wmp; /* ptr to write-map struct for RMW */ 200 ssize_t mbs_copy_offset; 201 int mbs_layer_index; /* chain index for RMW */ 202 }; 203 204 _NOTE(SCHEME_PROTECTS_DATA("unshared data", sd_mapblocksize_info)) 205 206 207 /* 208 * sd_lun: The main data structure for a scsi logical unit. 209 * Stored as the softstate structure for each device. 210 */ 211 212 struct sd_lun { 213 214 /* Back ptr to the SCSA scsi_device struct for this LUN */ 215 struct scsi_device *un_sd; 216 217 /* 218 * Support for Auto-Request sense capability 219 */ 220 struct buf *un_rqs_bp; /* ptr to request sense bp */ 221 struct scsi_pkt *un_rqs_pktp; /* ptr to request sense scsi_pkt */ 222 int un_sense_isbusy; /* Busy flag for RQS buf */ 223 224 /* 225 * These specify the layering chains to use with this instance. These 226 * are initialized according to the values in the sd_chain_index_map[] 227 * array. See the description of sd_chain_index_map[] for details. 228 */ 229 int un_buf_chain_type; 230 int un_uscsi_chain_type; 231 int un_direct_chain_type; 232 int un_priority_chain_type; 233 234 /* Head & tail ptrs to the queue of bufs awaiting transport */ 235 struct buf *un_waitq_headp; 236 struct buf *un_waitq_tailp; 237 238 /* Ptr to the buf currently being retried (NULL if none) */ 239 struct buf *un_retry_bp; 240 241 /* This tracks the last kstat update for the un_retry_bp buf */ 242 void (*un_retry_statp)(kstat_io_t *); 243 244 void *un_xbuf_attr; /* xbuf attribute struct */ 245 246 247 /* System logical block size, in bytes. (defaults to DEV_BSIZE.) */ 248 uint32_t un_sys_blocksize; 249 250 /* The size of a logical block on the target, in bytes. */ 251 uint32_t un_tgt_blocksize; 252 253 /* 254 * The number of logical blocks on the target. This is adjusted 255 * to be in terms of the block size specified by un_sys_blocksize 256 * (ie, the system block size). 257 */ 258 uint64_t un_blockcount; 259 260 /* 261 * Various configuration data 262 */ 263 uchar_t un_ctype; /* Controller type */ 264 char *un_node_type; /* minor node type */ 265 uchar_t un_interconnect_type; /* Interconnect for underlying HBA */ 266 267 uint_t un_notready_retry_count; /* Per disk notready retry count */ 268 uint_t un_busy_retry_count; /* Per disk BUSY retry count */ 269 270 uint_t un_retry_count; /* Per disk retry count */ 271 uint_t un_victim_retry_count; /* Per disk victim retry count */ 272 273 /* (4356701, 4367306) */ 274 uint_t un_reset_retry_count; /* max io retries before issuing reset */ 275 ushort_t un_reserve_release_time; /* reservation release timeout */ 276 277 uchar_t un_reservation_type; /* SCSI-3 or SCSI-2 */ 278 uint_t un_max_xfer_size; /* Maximum DMA transfer size */ 279 int un_partial_dma_supported; 280 int un_buf_breakup_supported; 281 282 int un_mincdb; /* Smallest CDB to use */ 283 int un_maxcdb; /* Largest CDB to use */ 284 int un_max_hba_cdb; /* Largest CDB supported by HBA */ 285 int un_status_len; 286 int un_pkt_flags; 287 288 /* 289 * Note: un_uscsi_timeout is a "mirror" of un_cmd_timeout, adjusted 290 * for ISCD(). Any updates to un_cmd_timeout MUST be reflected 291 * in un_uscsi_timeout as well! 292 */ 293 ushort_t un_cmd_timeout; /* Timeout for completion */ 294 ushort_t un_uscsi_timeout; /* Timeout for USCSI completion */ 295 ushort_t un_busy_timeout; /* Timeout for busy retry */ 296 297 /* 298 * Info on current states, statuses, etc. (Updated frequently) 299 */ 300 uchar_t un_state; /* current state */ 301 uchar_t un_last_state; /* last state */ 302 uchar_t un_last_pkt_reason; /* used to suppress multiple msgs */ 303 int un_tagflags; /* Pkt Flags for Tagged Queueing */ 304 short un_resvd_status; /* Reservation Status */ 305 ulong_t un_detach_count; /* !0 if executing detach routine */ 306 ulong_t un_layer_count; /* Current total # of layered opens */ 307 ulong_t un_opens_in_progress; /* Current # of threads in sdopen */ 308 309 ksema_t un_semoclose; /* serialize opens/closes */ 310 311 /* 312 * Control & status info for command throttling 313 */ 314 long un_ncmds_in_driver; /* number of cmds in driver */ 315 short un_ncmds_in_transport; /* number of cmds in transport */ 316 short un_throttle; /* max #cmds allowed in transport */ 317 short un_saved_throttle; /* saved value of un_throttle */ 318 short un_busy_throttle; /* saved un_throttle for BUSY */ 319 short un_min_throttle; /* min value of un_throttle */ 320 timeout_id_t un_reset_throttle_timeid; /* timeout(9F) handle */ 321 322 /* 323 * Multi-host (clustering) support 324 */ 325 opaque_t un_mhd_token; /* scsi watch request */ 326 timeout_id_t un_resvd_timeid; /* for resvd recover */ 327 328 /* Event callback resources (photon) */ 329 ddi_eventcookie_t un_insert_event; /* insert event */ 330 ddi_callback_id_t un_insert_cb_id; /* insert callback */ 331 ddi_eventcookie_t un_remove_event; /* remove event */ 332 ddi_callback_id_t un_remove_cb_id; /* remove callback */ 333 334 uint_t un_start_stop_cycle_page; /* Saves start/stop */ 335 /* cycle page */ 336 timeout_id_t un_dcvb_timeid; /* dlyd cv broadcast */ 337 338 /* 339 * Data structures for open counts, partition info, VTOC, 340 * stats, and other such bookkeeping info. 341 */ 342 union ocmap un_ocmap; /* open partition map */ 343 struct kstat *un_pstats[NSDMAP]; /* partition statistics */ 344 struct kstat *un_stats; /* disk statistics */ 345 kstat_t *un_errstats; /* for error statistics */ 346 uint64_t un_exclopen; /* exclusive open bitmask */ 347 ddi_devid_t un_devid; /* device id */ 348 uint_t un_vpd_page_mask; /* Supported VPD pages */ 349 350 /* 351 * Bit fields for various configuration/state/status info. 352 * Comments indicate the condition if the value of the 353 * variable is TRUE (nonzero). 354 */ 355 uint32_t 356 un_f_arq_enabled :1, /* Auto request sense is */ 357 /* currently enabled */ 358 un_f_blockcount_is_valid :1, /* The un_blockcount */ 359 /* value is currently valid */ 360 un_f_tgt_blocksize_is_valid :1, /* The un_tgt_blocksize */ 361 /* value is currently valid */ 362 un_f_allow_bus_device_reset :1, /* Driver may issue a BDR as */ 363 /* a part of error recovery. */ 364 un_f_is_fibre :1, /* The device supports fibre */ 365 /* channel */ 366 un_f_sync_cache_supported :1, /* sync cache cmd supported */ 367 /* supported */ 368 un_f_format_in_progress :1, /* The device is currently */ 369 /* executing a FORMAT cmd. */ 370 un_f_opt_queueing :1, /* Enable Command Queuing to */ 371 /* Host Adapter */ 372 un_f_opt_fab_devid :1, /* Disk has no valid/unique */ 373 /* serial number. */ 374 un_f_opt_disable_cache :1, /* Read/Write disk cache is */ 375 /* disabled. */ 376 un_f_cfg_is_atapi :1, /* This is an ATAPI device. */ 377 un_f_write_cache_enabled :1, /* device return success on */ 378 /* writes before transfer to */ 379 /* physical media complete */ 380 un_f_cfg_playmsf_bcd :1, /* Play Audio, BCD params. */ 381 un_f_cfg_readsub_bcd :1, /* READ SUBCHANNEL BCD resp. */ 382 un_f_cfg_read_toc_trk_bcd :1, /* track # is BCD */ 383 un_f_cfg_read_toc_addr_bcd :1, /* address is BCD */ 384 un_f_cfg_no_read_header :1, /* READ HEADER not supported */ 385 un_f_cfg_read_cd_xd4 :1, /* READ CD opcode is 0xd4 */ 386 un_f_mmc_cap :1, /* Device is MMC compliant */ 387 un_f_mmc_writable_media :1, /* writable media in device */ 388 un_f_dvdram_writable_device :1, /* DVDRAM device is writable */ 389 un_f_cfg_cdda :1, /* READ CDDA supported */ 390 un_f_cfg_tur_check :1, /* verify un_ncmds before tur */ 391 392 un_f_use_adaptive_throttle :1, /* enable/disable adaptive */ 393 /* throttling */ 394 un_f_pm_is_enabled :1, /* PM is enabled on this */ 395 /* instance */ 396 un_f_watcht_stopped :1, /* media watch thread flag */ 397 un_f_pkstats_enabled :1, /* Flag to determine if */ 398 /* partition kstats are */ 399 /* enabled. */ 400 un_f_disksort_disabled :1, /* Flag to disable disksort */ 401 un_f_lun_reset_enabled :1, /* Set if target supports */ 402 /* SCSI Logical Unit Reset */ 403 un_f_doorlock_supported :1, /* Device supports Doorlock */ 404 un_f_start_stop_supported :1, /* device has motor */ 405 un_f_reserved1 :1; 406 407 uint32_t 408 un_f_mboot_supported :1, /* mboot supported */ 409 un_f_is_hotpluggable :1, /* hotpluggable */ 410 un_f_has_removable_media :1, /* has removable media */ 411 un_f_non_devbsize_supported :1, /* non-512 blocksize */ 412 un_f_devid_supported :1, /* device ID supported */ 413 un_f_eject_media_supported :1, /* media can be ejected */ 414 un_f_chk_wp_open :1, /* check if write-protected */ 415 /* when being opened */ 416 un_f_descr_format_supported :1, /* support descriptor format */ 417 /* for sense data */ 418 un_f_check_start_stop :1, /* needs to check if */ 419 /* START-STOP command is */ 420 /* supported by hardware */ 421 /* before issuing it */ 422 un_f_monitor_media_state :1, /* need a watch thread to */ 423 /* monitor device state */ 424 un_f_attach_spinup :1, /* spin up once the */ 425 /* device is attached */ 426 un_f_log_sense_supported :1, /* support log sense */ 427 un_f_pm_supported :1, /* support power-management */ 428 un_f_cfg_is_lsi :1, /* Is LSI device, */ 429 /* default to NO */ 430 un_f_wcc_inprog :1, /* write cache change in */ 431 /* progress */ 432 un_f_ejecting :1, /* media is ejecting */ 433 un_f_suppress_cache_flush :1, /* supress flush on */ 434 /* write cache */ 435 un_f_sync_nv_supported :1, /* SYNC_NV */ 436 /* bit is supported */ 437 un_f_sync_cache_required :1, /* flag to check if */ 438 /* SYNC CACHE needs to be */ 439 /* sent in sdclose */ 440 un_f_reserved :13; 441 442 /* Ptr to table of strings for ASC/ASCQ error message printing */ 443 struct scsi_asq_key_strings *un_additional_codes; 444 445 /* 446 * Power Management support. 447 * 448 * un_pm_mutex protects, un_pm_count, un_pm_timeid, un_pm_busy, 449 * un_pm_busy_cv, and un_pm_idle_timeid. 450 * It's not required that SD_MUTEX be acquired before acquiring 451 * un_pm_mutex, however if they must both be held 452 * then acquire SD_MUTEX first. 453 * 454 * un_pm_count is used to indicate PM state as follows: 455 * less than 0 the device is powered down, 456 * transition from 0 ==> 1, mark the device as busy via DDI 457 * transition from 1 ==> 0, mark the device as idle via DDI 458 */ 459 kmutex_t un_pm_mutex; 460 int un_pm_count; /* indicates pm state */ 461 timeout_id_t un_pm_timeid; /* timeout id for pm */ 462 uint_t un_pm_busy; 463 kcondvar_t un_pm_busy_cv; 464 short un_power_level; /* Power Level */ 465 uchar_t un_save_state; 466 kcondvar_t un_suspend_cv; /* power management */ 467 kcondvar_t un_disk_busy_cv; /* wait for IO completion */ 468 469 /* Resources used for media change callback support */ 470 kcondvar_t un_state_cv; /* Cond Var on mediastate */ 471 enum dkio_state un_mediastate; /* current media state */ 472 enum dkio_state un_specified_mediastate; /* expected state */ 473 opaque_t un_swr_token; /* scsi_watch request token */ 474 475 /* Non-512 byte block support */ 476 struct kmem_cache *un_wm_cache; /* fast alloc in non-512 write case */ 477 uint_t un_rmw_count; /* count of read-modify-writes */ 478 struct sd_w_map *un_wm; /* head of sd_w_map chain */ 479 480 /* For timeout callback to issue a START STOP UNIT command */ 481 timeout_id_t un_startstop_timeid; 482 483 /* Timeout callback handle for SD_PATH_DIRECT_PRIORITY cmd restarts */ 484 timeout_id_t un_direct_priority_timeid; 485 486 /* TRAN_FATAL_ERROR count. Cleared by TRAN_ACCEPT from scsi_transport */ 487 ulong_t un_tran_fatal_count; 488 489 timeout_id_t un_retry_timeid; 490 491 time_t un_pm_idle_time; 492 timeout_id_t un_pm_idle_timeid; 493 494 /* 495 * Count to determine if a Sonoma controller is in the process of 496 * failing over, and how many I/O's are failed with the 05/94/01 497 * sense code. 498 */ 499 uint_t un_sonoma_failure_count; 500 501 /* 502 * Support for failfast operation. 503 */ 504 struct buf *un_failfast_bp; 505 struct buf *un_failfast_headp; 506 struct buf *un_failfast_tailp; 507 uint32_t un_failfast_state; 508 /* Callback routine active counter */ 509 short un_in_callback; 510 511 kcondvar_t un_wcc_cv; /* synchronize changes to */ 512 /* un_f_write_cache_enabled */ 513 514 #ifdef SD_FAULT_INJECTION 515 /* SD Fault Injection */ 516 #define SD_FI_MAX_BUF 65536 517 #define SD_FI_MAX_ERROR 1024 518 kmutex_t un_fi_mutex; 519 uint_t sd_fi_buf_len; 520 char sd_fi_log[SD_FI_MAX_BUF]; 521 struct sd_fi_pkt *sd_fi_fifo_pkt[SD_FI_MAX_ERROR]; 522 struct sd_fi_xb *sd_fi_fifo_xb[SD_FI_MAX_ERROR]; 523 struct sd_fi_un *sd_fi_fifo_un[SD_FI_MAX_ERROR]; 524 struct sd_fi_arq *sd_fi_fifo_arq[SD_FI_MAX_ERROR]; 525 uint_t sd_fi_fifo_start; 526 uint_t sd_fi_fifo_end; 527 uint_t sd_injection_mask; 528 529 #endif 530 531 cmlb_handle_t un_cmlbhandle; 532 533 /* 534 * Pointer to internal struct sd_fm_internal in which 535 * will pass necessary information for FMA ereport posting. 536 */ 537 void *un_fm_private; 538 }; 539 540 #define SD_IS_VALID_LABEL(un) (cmlb_is_valid(un->un_cmlbhandle)) 541 542 /* 543 * Macros for conversions between "target" and "system" block sizes, and 544 * for conversion between block counts and byte counts. As used here, 545 * "system" block size refers to the block size used by the kernel/ 546 * filesystem (this includes the disk label). The "target" block size 547 * is the block size returned by the SCSI READ CAPACITY command. 548 * 549 * Note: These macros will round up to the next largest blocksize to accomodate 550 * the number of blocks specified. 551 */ 552 553 /* Convert a byte count to a number of target blocks */ 554 #define SD_BYTES2TGTBLOCKS(un, bytecount) \ 555 ((bytecount + (un->un_tgt_blocksize - 1))/un->un_tgt_blocksize) 556 557 /* Convert a target block count to a number of bytes */ 558 #define SD_TGTBLOCKS2BYTES(un, blockcount) \ 559 (blockcount * (un)->un_tgt_blocksize) 560 561 /* Convert a byte count to a number of system blocks */ 562 #define SD_BYTES2SYSBLOCKS(un, bytecount) \ 563 ((bytecount + (un->un_sys_blocksize - 1))/un->un_sys_blocksize) 564 565 /* Convert a system block count to a number of bytes */ 566 #define SD_SYSBLOCKS2BYTES(un, blockcount) \ 567 (blockcount * (un)->un_sys_blocksize) 568 569 /* 570 * Calculate the number of bytes needed to hold the requested number of bytes 571 * based upon the native target sector/block size 572 */ 573 #define SD_REQBYTES2TGTBYTES(un, bytecount) \ 574 (SD_BYTES2TGTBLOCKS(un, bytecount) * (un)->un_tgt_blocksize) 575 576 /* 577 * Calculate the byte offset from the beginning of the target block 578 * to the system block location. 579 */ 580 #define SD_TGTBYTEOFFSET(un, sysblk, tgtblk) \ 581 (SD_SYSBLOCKS2BYTES(un, sysblk) - SD_TGTBLOCKS2BYTES(un, tgtblk)) 582 583 /* 584 * Calculate the target block location from the system block location 585 */ 586 #define SD_SYS2TGTBLOCK(un, blockcnt) \ 587 ((blockcnt * un->un_sys_blocksize) / un->un_tgt_blocksize) 588 589 /* 590 * SD_DEFAULT_MAX_XFER_SIZE is the default value to bound the max xfer 591 * for physio, for devices without tagged queuing enabled. 592 * The default for devices with tagged queuing enabled is SD_MAX_XFER_SIZE 593 */ 594 #if defined(__i386) || defined(__amd64) 595 #define SD_DEFAULT_MAX_XFER_SIZE (256 * 1024) 596 #endif 597 #define SD_MAX_XFER_SIZE (1024 * 1024) 598 599 /* 600 * Warlock annotations 601 */ 602 _NOTE(MUTEX_PROTECTS_DATA(scsi_device::sd_mutex, sd_lun)) 603 _NOTE(READ_ONLY_DATA(sd_lun::un_sd)) 604 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_reservation_type)) 605 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_mincdb)) 606 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_maxcdb)) 607 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_max_hba_cdb)) 608 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_status_len)) 609 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_f_arq_enabled)) 610 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_ctype)) 611 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_cmlbhandle)) 612 _NOTE(DATA_READABLE_WITHOUT_LOCK(sd_lun::un_fm_private)) 613 614 615 _NOTE(SCHEME_PROTECTS_DATA("safe sharing", 616 sd_lun::un_mhd_token 617 sd_lun::un_state 618 sd_lun::un_tagflags 619 sd_lun::un_f_format_in_progress 620 sd_lun::un_resvd_timeid 621 sd_lun::un_reset_throttle_timeid 622 sd_lun::un_startstop_timeid 623 sd_lun::un_dcvb_timeid 624 sd_lun::un_f_allow_bus_device_reset 625 sd_lun::un_sys_blocksize 626 sd_lun::un_tgt_blocksize 627 sd_lun::un_additional_codes)) 628 629 _NOTE(SCHEME_PROTECTS_DATA("stable data", 630 sd_lun::un_reserve_release_time 631 sd_lun::un_max_xfer_size 632 sd_lun::un_partial_dma_supported 633 sd_lun::un_buf_breakup_supported 634 sd_lun::un_f_is_fibre 635 sd_lun::un_node_type 636 sd_lun::un_buf_chain_type 637 sd_lun::un_uscsi_chain_type 638 sd_lun::un_direct_chain_type 639 sd_lun::un_priority_chain_type 640 sd_lun::un_xbuf_attr 641 sd_lun::un_cmd_timeout 642 sd_lun::un_pkt_flags)) 643 644 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", 645 block_descriptor 646 buf 647 cdrom_subchnl 648 cdrom_tocentry 649 cdrom_tochdr 650 cdrom_read 651 dk_cinfo 652 dk_devid 653 dk_label 654 dk_map 655 dk_temperature 656 mhioc_inkeys 657 mhioc_inresvs 658 mode_caching 659 mode_header 660 mode_speed 661 scsi_cdb 662 scsi_arq_status 663 scsi_extended_sense 664 scsi_inquiry 665 scsi_pkt 666 uio 667 uscsi_cmd)) 668 669 670 _NOTE(SCHEME_PROTECTS_DATA("stable data", scsi_device dk_cinfo)) 671 _NOTE(SCHEME_PROTECTS_DATA("unique per pkt", scsi_status scsi_cdb)) 672 673 _NOTE(MUTEX_PROTECTS_DATA(sd_lun::un_pm_mutex, sd_lun::un_pm_count 674 sd_lun::un_pm_timeid sd_lun::un_pm_busy sd_lun::un_pm_busy_cv 675 sd_lun::un_pm_idle_timeid)) 676 677 #ifdef SD_FAULT_INJECTION 678 _NOTE(MUTEX_PROTECTS_DATA(sd_lun::un_fi_mutex, 679 sd_lun::sd_fi_buf_len sd_lun::sd_fi_log)) 680 #endif 681 682 /* _NOTE(LOCK_ORDER(sd_lun::un_sd.sd_mutex sd_lun::un_pm_mutex)) */ 683 684 685 686 /* 687 * Referenced for frequently-accessed members of the unit structure 688 */ 689 #define SD_SCSI_DEVP(un) ((un)->un_sd) 690 #define SD_DEVINFO(un) ((un)->un_sd->sd_dev) 691 #define SD_INQUIRY(un) ((un)->un_sd->sd_inq) 692 #define SD_MUTEX(un) (&((un)->un_sd->sd_mutex)) 693 #define SD_ADDRESS(un) (&((un)->un_sd->sd_address)) 694 #define SD_GET_DEV(un) (sd_make_device(SD_DEVINFO(un))) 695 #define SD_FM_LOG(un) (((struct sd_fm_internal *)\ 696 ((un)->un_fm_private))->fm_log_level) 697 698 699 /* 700 * Values for un_ctype 701 */ 702 #define CTYPE_CDROM 0 703 #define CTYPE_MD21 1 /* Obsolete! */ 704 #define CTYPE_CCS 2 705 #define CTYPE_ROD 3 706 #define CTYPE_PXRE 4 /* Obsolete! */ 707 708 #define ISCD(un) ((un)->un_ctype == CTYPE_CDROM) 709 #define ISROD(un) ((un)->un_ctype == CTYPE_ROD) 710 #define ISPXRE(un) ((un)->un_ctype == CTYPE_PXRE) 711 712 /* 713 * This macro checks the vendor of the device to see if it is LSI. Because 714 * LSI has some devices out there that return 'Symbios' or 'SYMBIOS', we 715 * need to check for those also. 716 * 717 * This is used in some vendor specific checks. 718 */ 719 #define SD_IS_LSI(un) ((un)->un_f_cfg_is_lsi == TRUE) 720 721 /* 722 * Macros to check if the lun is a Sun T3 or a T4 723 */ 724 #define SD_IS_T3(un) \ 725 ((bcmp(SD_INQUIRY(un)->inq_vid, "SUN", 3) == 0) && \ 726 (bcmp(SD_INQUIRY(un)->inq_pid, "T3", 2) == 0)) 727 728 #define SD_IS_T4(un) \ 729 ((bcmp(SD_INQUIRY(un)->inq_vid, "SUN", 3) == 0) && \ 730 (bcmp(SD_INQUIRY(un)->inq_pid, "T4", 2) == 0)) 731 732 /* 733 * Macros for non-512 byte writes to removable devices. 734 */ 735 #define NOT_DEVBSIZE(un) \ 736 ((un)->un_tgt_blocksize != (un)->un_sys_blocksize) 737 738 /* 739 * Check that a write map, used for locking lba ranges for writes, is in 740 * the linked list. 741 */ 742 #define ONLIST(un, wmp) \ 743 (((un)->un_wm == (wmp)) || ((wmp)->wm_prev != NULL)) 744 745 /* 746 * Free a write map which is on list. Basically make sure that nobody is 747 * sleeping on it before freeing it. 748 */ 749 #define FREE_ONLIST_WMAP(un, wmp) \ 750 if (!(wmp)->wm_wanted_count) { \ 751 sd_free_inlist_wmap((un), (wmp)); \ 752 (wmp) = NULL; \ 753 } 754 755 #define CHK_N_FREEWMP(un, wmp) \ 756 if (!ONLIST((un), (wmp))) { \ 757 kmem_cache_free((un)->un_wm_cache, (wmp)); \ 758 (wmp) = NULL; \ 759 } else { \ 760 FREE_ONLIST_WMAP((un), (wmp)); \ 761 } 762 763 /* 764 * Values used to in wm_flags field of sd_w_map. 765 */ 766 #define SD_WTYPE_SIMPLE 0x001 /* Write aligned at blksize boundary */ 767 #define SD_WTYPE_RMW 0x002 /* Write requires read-modify-write */ 768 #define SD_WM_BUSY 0x100 /* write-map is busy */ 769 770 771 /* Device error kstats */ 772 struct sd_errstats { 773 struct kstat_named sd_softerrs; 774 struct kstat_named sd_harderrs; 775 struct kstat_named sd_transerrs; 776 struct kstat_named sd_vid; 777 struct kstat_named sd_pid; 778 struct kstat_named sd_revision; 779 struct kstat_named sd_serial; 780 struct kstat_named sd_capacity; 781 struct kstat_named sd_rq_media_err; 782 struct kstat_named sd_rq_ntrdy_err; 783 struct kstat_named sd_rq_nodev_err; 784 struct kstat_named sd_rq_recov_err; 785 struct kstat_named sd_rq_illrq_err; 786 struct kstat_named sd_rq_pfa_err; 787 }; 788 789 790 /* 791 * Structs and definitions for SCSI-3 Persistent Reservation 792 */ 793 typedef struct sd_prin_readkeys { 794 uint32_t generation; 795 uint32_t len; 796 mhioc_resv_key_t *keylist; 797 } sd_prin_readkeys_t; 798 799 typedef struct sd_readresv_desc { 800 mhioc_resv_key_t resvkey; 801 uint32_t scope_specific_addr; 802 uint8_t reserved_1; 803 #if defined(_BIT_FIELDS_LTOH) 804 uint8_t type:4, 805 scope:4; 806 #elif defined(_BIT_FIELDS_HTOL) 807 uint8_t scope:4, 808 type:4; 809 #else 810 #error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined 811 #endif /* _BIT_FIELDS_LTOH */ 812 uint8_t reserved_2; 813 uint8_t reserved_3; 814 } sd_readresv_desc_t; 815 816 typedef struct sd_prin_readresv { 817 uint32_t generation; 818 uint32_t len; 819 sd_readresv_desc_t *readresv_desc; 820 } sd_prin_readresv_t; 821 822 typedef struct sd_prout { 823 uchar_t res_key[MHIOC_RESV_KEY_SIZE]; 824 uchar_t service_key[MHIOC_RESV_KEY_SIZE]; 825 uint32_t scope_address; 826 #if defined(_BIT_FIELDS_LTOH) 827 uchar_t aptpl:1, 828 reserved:7; 829 #elif defined(_BIT_FIELDS_HTOL) 830 uchar_t reserved:7, 831 aptpl:1; 832 #else 833 #error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined 834 #endif /* _BIT_FIELDS_LTOH */ 835 uchar_t reserved_1; 836 uint16_t ext_len; 837 } sd_prout_t; 838 839 #define SD_READ_KEYS 0x00 840 #define SD_READ_RESV 0x01 841 842 #define SD_SCSI3_REGISTER 0x00 843 #define SD_SCSI3_RESERVE 0x01 844 #define SD_SCSI3_RELEASE 0x02 845 #define SD_SCSI3_PREEMPTANDABORT 0x05 846 #define SD_SCSI3_REGISTERANDIGNOREKEY 0x06 847 848 /* 849 * Note: The default init of un_reservation_type is to the value of '0' 850 * (from the ddi_softs_state_zalloc) which means it is defaulting to SCSI-3 851 * reservation type. This is ok because during attach we use a SCSI-3 852 * PRIORITY RESERVE IN command to determine the reservation type, and set 853 * un_reservation_type for all cases. 854 */ 855 #define SD_SCSI3_RESERVATION 0x0 856 #define SD_SCSI2_RESERVATION 0x1 857 #define SCSI3_RESV_DESC_LEN 16 858 859 /* 860 * Reservation Status's 861 */ 862 #define SD_RELEASE 0x0000 863 #define SD_RESERVE 0x0001 864 #define SD_TKOWN 0x0002 865 #define SD_LOST_RESERVE 0x0004 866 #define SD_FAILFAST 0x0080 867 #define SD_WANT_RESERVE 0x0100 868 #define SD_RESERVATION_CONFLICT 0x0200 869 #define SD_PRIORITY_RESERVE 0x0400 870 871 #define SD_TARGET_IS_UNRESERVED 0 872 #define SD_TARGET_IS_RESERVED 1 873 874 /* 875 * Save page in mode_select 876 */ 877 #define SD_DONTSAVE_PAGE 0 878 #define SD_SAVE_PAGE 1 879 880 /* 881 * Delay before reclaiming reservation is 6 seconds, in units of micro seconds 882 */ 883 #define SD_REINSTATE_RESV_DELAY 6000000 884 885 #define SD_MODE2_BLKSIZE 2336 /* bytes */ 886 887 /* 888 * Resource type definitions for multi host control operations. Specifically, 889 * queue and request definitions for reservation request handling between the 890 * scsi facility callback function (sd_mhd_watch_cb) and the reservation 891 * reclaim thread (sd_resv_reclaim_thread) 892 */ 893 struct sd_thr_request { 894 dev_t dev; 895 struct sd_thr_request *sd_thr_req_next; 896 }; 897 898 struct sd_resv_reclaim_request { 899 kthread_t *srq_resv_reclaim_thread; 900 struct sd_thr_request *srq_thr_req_head; 901 struct sd_thr_request *srq_thr_cur_req; 902 kcondvar_t srq_inprocess_cv; 903 kmutex_t srq_resv_reclaim_mutex; 904 kcondvar_t srq_resv_reclaim_cv; 905 }; 906 907 _NOTE(MUTEX_PROTECTS_DATA(sd_resv_reclaim_request::srq_resv_reclaim_mutex, 908 sd_resv_reclaim_request)) 909 _NOTE(SCHEME_PROTECTS_DATA("unshared data", sd_thr_request)) 910 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", sd_prout)) 911 912 913 914 /* 915 * Driver Logging Components 916 * 917 * These components cover the functional entry points and areas of the 918 * driver. A component value is used for the entry point and utility 919 * functions used by the entry point. The common component value is used 920 * in those routines that are called from many areas of the driver. 921 * 922 * This can be done by adding the following two lines to /etc/system: 923 * set sd:sd_component_mask=0x00080000 924 * set sd:sd_level_mask=0x00000008 925 */ 926 #define SD_LOG_PROBE 0x00000001 927 #define SD_LOG_ATTACH_DETACH 0x00000002 928 #define SD_LOG_OPEN_CLOSE 0x00000004 929 #define SD_LOG_READ_WRITE 0x00000008 930 #define SD_LOG_POWER 0x00000010 931 #define SD_LOG_IOCTL 0x00000020 932 #define SD_LOG_IOCTL_MHD 0x00000040 933 #define SD_LOG_IOCTL_RMMEDIA 0x00000080 934 #define SD_LOG_IOCTL_DKIO 0x00000100 935 #define SD_LOG_IO 0x00000200 936 #define SD_LOG_IO_CORE 0x00000400 937 #define SD_LOG_IO_DISKSORT 0x00000800 938 #define SD_LOG_IO_PARTITION 0x00001000 939 #define SD_LOG_IO_RMMEDIA 0x00002000 940 #define SD_LOG_IO_CHKSUM 0x00004000 941 #define SD_LOG_IO_SDIOCTL 0x00008000 942 #define SD_LOG_IO_PM 0x00010000 943 #define SD_LOG_ERROR 0x00020000 944 #define SD_LOG_DUMP 0x00040000 945 #define SD_LOG_COMMON 0x00080000 946 #define SD_LOG_SDTEST 0x00100000 947 #define SD_LOG_IOERR 0x00200000 948 #define SD_LOG_IO_FAILFAST 0x00400000 949 950 /* Driver Logging Levels */ 951 #define SD_LOGMASK_ERROR 0x00000001 952 #define SD_LOGMASK_DUMP_MEM 0x00000002 953 #define SD_LOGMASK_INFO 0x00000004 954 #define SD_LOGMASK_TRACE 0x00000008 955 #define SD_LOGMASK_DIAG 0x00000010 956 957 /* Driver Logging Formats */ 958 #define SD_LOG_HEX 0x00000001 959 #define SD_LOG_CHAR 0x00000002 960 961 /* 962 * The following macros should be used to log driver debug information 963 * only. The output is filtered according to the component and level mask 964 * values. Non-debug information, such as driver warnings intended for 965 * the user should be logged via the scsi_log facility to ensure that 966 * they are not filtered. 967 */ 968 #if DEBUG || lint 969 #define SDDEBUG 970 971 /* SD_ERROR is called to log driver error conditions */ 972 #define SD_ERROR sd_log_err 973 974 /* SD_TRACE is called to log driver trace conditions (function entry/exit) */ 975 #define SD_TRACE sd_log_trace 976 977 /* SD_INFO is called to log general purpose driver info */ 978 #define SD_INFO sd_log_info 979 980 /* SD_DUMP_MEMORY is called to dump a data buffer to the log */ 981 #define SD_DUMP_MEMORY sd_dump_memory 982 983 /* RESET/ABORTS testing ioctls */ 984 #define DKIOCRESET (DKIOC|14) 985 #define DKIOCABORT (DKIOC|15) 986 987 #ifdef SD_FAULT_INJECTION 988 /* 989 * sd_fi_pkt replicates the variables that are exposed through pkt 990 * 991 * sd_fi_xb replicates the variables that are exposed through xb 992 * 993 * sd_fi_un replicates the variables that are exposed through un 994 * 995 * sd_fi_arq replicates the variables that are 996 * exposed for Auto-Reqeust-Sense 997 * 998 */ 999 struct sd_fi_pkt { 1000 uint_t pkt_flags; /* flags */ 1001 uchar_t pkt_scbp; /* pointer to status block */ 1002 uchar_t pkt_cdbp; /* pointer to command block */ 1003 uint_t pkt_state; /* state of command */ 1004 uint_t pkt_statistics; /* statistics */ 1005 uchar_t pkt_reason; /* reason completion called */ 1006 }; 1007 1008 struct sd_fi_xb { 1009 daddr_t xb_blkno; 1010 ssize_t xb_dma_resid; 1011 short xb_retry_count; 1012 short xb_victim_retry_count; 1013 uchar_t xb_sense_status; 1014 uint_t xb_sense_state; 1015 ssize_t xb_sense_resid; 1016 uchar_t xb_sense_data[SENSE_LENGTH]; 1017 uchar_t es_code; 1018 uchar_t es_key; 1019 uchar_t es_add_code; 1020 uchar_t es_qual_code; 1021 }; 1022 1023 struct sd_fi_un { 1024 uchar_t inq_rmb; 1025 uchar_t un_ctype; 1026 uint_t un_notready_retry_count; 1027 uint_t un_reset_retry_count; 1028 uchar_t un_reservation_type; 1029 ushort_t un_notrdy_delay; 1030 short un_resvd_status; 1031 uint32_t 1032 un_f_arq_enabled, 1033 un_f_allow_bus_device_reset, 1034 un_f_opt_queueing; 1035 timeout_id_t un_restart_timeid; 1036 }; 1037 1038 struct sd_fi_arq { 1039 struct scsi_status sts_status; 1040 struct scsi_status sts_rqpkt_status; 1041 uchar_t sts_rqpkt_reason; 1042 uchar_t sts_rqpkt_resid; 1043 uint_t sts_rqpkt_state; 1044 uint_t sts_rqpkt_statistics; 1045 struct scsi_extended_sense sts_sensedata; 1046 }; 1047 1048 /* 1049 * Conditional set def 1050 */ 1051 #define SD_CONDSET(a, b, c, d) \ 1052 { \ 1053 a->c = ((fi_ ## b)->c); \ 1054 SD_INFO(SD_LOG_IOERR, un, \ 1055 "sd_fault_injection:" \ 1056 "setting %s to %d\n", \ 1057 d, ((fi_ ## b)->c)); \ 1058 } 1059 1060 /* SD FaultInjection ioctls */ 1061 #define SDIOC ('T'<<8) 1062 #define SDIOCSTART (SDIOC|1) 1063 #define SDIOCSTOP (SDIOC|2) 1064 #define SDIOCINSERTPKT (SDIOC|3) 1065 #define SDIOCINSERTXB (SDIOC|4) 1066 #define SDIOCINSERTUN (SDIOC|5) 1067 #define SDIOCINSERTARQ (SDIOC|6) 1068 #define SDIOCPUSH (SDIOC|7) 1069 #define SDIOCRETRIEVE (SDIOC|8) 1070 #define SDIOCRUN (SDIOC|9) 1071 #endif 1072 1073 #else 1074 1075 #undef SDDEBUG 1076 #define SD_ERROR { if (0) sd_log_err; } 1077 #define SD_TRACE { if (0) sd_log_trace; } 1078 #define SD_INFO { if (0) sd_log_info; } 1079 #define SD_DUMP_MEMORY { if (0) sd_dump_memory; } 1080 #endif 1081 1082 1083 /* 1084 * Miscellaneous macros 1085 */ 1086 1087 #define SD_USECTOHZ(x) (drv_usectohz((x)*1000000)) 1088 #define SD_GET_PKT_STATUS(pktp) ((*(pktp)->pkt_scbp) & STATUS_MASK) 1089 1090 #define SD_BIOERROR(bp, errcode) \ 1091 if ((bp)->b_resid == 0) { \ 1092 (bp)->b_resid = (bp)->b_bcount; \ 1093 } \ 1094 if ((bp)->b_error == 0) { \ 1095 bioerror(bp, errcode); \ 1096 } \ 1097 (bp)->b_flags |= B_ERROR; 1098 1099 #define SD_FILL_SCSI1_LUN_CDB(lunp, cdbp) \ 1100 if (! (lunp)->un_f_is_fibre && \ 1101 SD_INQUIRY((lunp))->inq_ansi == 0x01) { \ 1102 int _lun = ddi_prop_get_int(DDI_DEV_T_ANY, \ 1103 SD_DEVINFO((lunp)), DDI_PROP_DONTPASS, \ 1104 SCSI_ADDR_PROP_LUN, 0); \ 1105 if (_lun > 0) { \ 1106 (cdbp)->scc_lun = _lun; \ 1107 } \ 1108 } 1109 1110 #define SD_FILL_SCSI1_LUN(lunp, pktp) \ 1111 SD_FILL_SCSI1_LUN_CDB((lunp), (union scsi_cdb *)(pktp)->pkt_cdbp) 1112 1113 /* 1114 * Disk driver states 1115 */ 1116 1117 #define SD_STATE_NORMAL 0 1118 #define SD_STATE_OFFLINE 1 1119 #define SD_STATE_RWAIT 2 1120 #define SD_STATE_DUMPING 3 1121 #define SD_STATE_SUSPENDED 4 1122 #define SD_STATE_PM_CHANGING 5 1123 1124 /* 1125 * The table is to be interpreted as follows: The rows lists all the states 1126 * and each column is a state that a state in each row *can* reach. The entries 1127 * in the table list the event that cause that transition to take place. 1128 * For e.g.: To go from state RWAIT to SUSPENDED, event (d)-- which is the 1129 * invocation of DDI_SUSPEND-- has to take place. Note the same event could 1130 * cause the transition from one state to two different states. e.g., from 1131 * state SUSPENDED, when we get a DDI_RESUME, we just go back to the *last 1132 * state* whatever that might be. (NORMAL or OFFLINE). 1133 * 1134 * 1135 * State Transition Table: 1136 * 1137 * NORMAL OFFLINE RWAIT DUMPING SUSPENDED PM_SUSPENDED 1138 * 1139 * NORMAL - (a) (b) (c) (d) (h) 1140 * 1141 * OFFLINE (e) - (e) (c) (d) NP 1142 * 1143 * RWAIT (f) NP - (c) (d) (h) 1144 * 1145 * DUMPING NP NP NP - NP NP 1146 * 1147 * SUSPENDED (g) (g) (b) NP* - NP 1148 * 1149 * PM_SUSPENDED (i) NP (b) (c) (d) - 1150 * 1151 * NP : Not Possible. 1152 * (a): Disk does not respond. 1153 * (b): Packet Allocation Fails 1154 * (c): Panic - Crash dump 1155 * (d): DDI_SUSPEND is called. 1156 * (e): Disk has a successful I/O completed. 1157 * (f): sdrunout() calls sdstart() which sets it NORMAL 1158 * (g): DDI_RESUME is called. 1159 * (h): Device threshold exceeded pm framework called power 1160 * entry point or pm_lower_power called in detach. 1161 * (i): When new I/O come in. 1162 * * : When suspended, we dont change state during panic dump 1163 */ 1164 1165 1166 #define SD_MAX_THROTTLE 256 1167 #define SD_MIN_THROTTLE 8 1168 /* 1169 * Lowest valid max. and min. throttle value. 1170 * This is set to 2 because if un_min_throttle were allowed to be 1 then 1171 * un_throttle would never get set to a value less than un_min_throttle 1172 * (0 is a special case) which means it would never get set back to 1173 * un_saved_throttle in routine sd_restore_throttle(). 1174 */ 1175 #define SD_LOWEST_VALID_THROTTLE 2 1176 1177 1178 1179 /* Return codes for sd_send_polled_cmd() and sd_scsi_poll() */ 1180 #define SD_CMD_SUCCESS 0 1181 #define SD_CMD_FAILURE 1 1182 #define SD_CMD_RESERVATION_CONFLICT 2 1183 #define SD_CMD_ILLEGAL_REQUEST 3 1184 #define SD_CMD_BECOMING_READY 4 1185 #define SD_CMD_CHECK_CONDITION 5 1186 1187 /* Return codes for sd_ready_and_valid */ 1188 #define SD_READY_VALID 0 1189 #define SD_NOT_READY_VALID 1 1190 #define SD_RESERVED_BY_OTHERS 2 1191 1192 #define SD_PATH_STANDARD 0 1193 #define SD_PATH_DIRECT 1 1194 #define SD_PATH_DIRECT_PRIORITY 2 1195 1196 #define SD_UNIT_ATTENTION_RETRY 40 1197 1198 /* 1199 * The following three are bit flags passed into sd_send_scsi_TEST_UNIT_READY 1200 * to control specific behavior. 1201 */ 1202 #define SD_CHECK_FOR_MEDIA 0x01 1203 #define SD_DONT_RETRY_TUR 0x02 1204 #define SD_BYPASS_PM 0x04 1205 1206 #define SD_GROUP0_MAX_ADDRESS (0x1fffff) 1207 #define SD_GROUP0_MAXCOUNT (0xff) 1208 #define SD_GROUP1_MAX_ADDRESS (0xffffffff) 1209 #define SD_GROUP1_MAXCOUNT (0xffff) 1210 1211 #define SD_BECOMING_ACTIVE 0x01 1212 #define SD_REMOVAL_ALLOW 0 1213 #define SD_REMOVAL_PREVENT 1 1214 1215 #define SD_GET_PKT_OPCODE(pktp) \ 1216 (((union scsi_cdb *)((pktp)->pkt_cdbp))->cdb_un.cmd) 1217 1218 1219 #define SD_NO_RETRY_ISSUED 0 1220 #define SD_DELAYED_RETRY_ISSUED 1 1221 #define SD_IMMEDIATE_RETRY_ISSUED 2 1222 1223 #if defined(__i386) || defined(__amd64) 1224 #define SD_UPDATE_B_RESID(bp, pktp) \ 1225 ((bp)->b_resid += (pktp)->pkt_resid + (SD_GET_XBUF(bp)->xb_dma_resid)) 1226 #else 1227 #define SD_UPDATE_B_RESID(bp, pktp) \ 1228 ((bp)->b_resid += (pktp)->pkt_resid) 1229 #endif 1230 1231 1232 #define SD_RETRIES_MASK 0x00FF 1233 #define SD_RETRIES_NOCHECK 0x0000 1234 #define SD_RETRIES_STANDARD 0x0001 1235 #define SD_RETRIES_VICTIM 0x0002 1236 #define SD_RETRIES_BUSY 0x0003 1237 #define SD_RETRIES_UA 0x0004 1238 #define SD_RETRIES_ISOLATE 0x8000 1239 #define SD_RETRIES_FAILFAST 0x4000 1240 1241 #define SD_UPDATE_RESERVATION_STATUS(un, pktp) \ 1242 if (((pktp)->pkt_reason == CMD_RESET) || \ 1243 ((pktp)->pkt_statistics & (STAT_BUS_RESET | STAT_DEV_RESET))) { \ 1244 if (((un)->un_resvd_status & SD_RESERVE) == SD_RESERVE) { \ 1245 (un)->un_resvd_status |= \ 1246 (SD_LOST_RESERVE | SD_WANT_RESERVE); \ 1247 } \ 1248 } 1249 1250 #define SD_SENSE_DATA_IS_VALID 0 1251 #define SD_SENSE_DATA_IS_INVALID 1 1252 1253 /* 1254 * Delay (in seconds) before restoring the "throttle limit" back 1255 * to its maximum value. 1256 * 60 seconds is what we will wait for to reset the 1257 * throttle back to it SD_MAX_THROTTLE for TRAN_BUSY. 1258 * 10 seconds for STATUS_QFULL because QFULL will incrementally 1259 * increase the throttle limit until it reaches max value. 1260 */ 1261 #define SD_RESET_THROTTLE_TIMEOUT 60 1262 #define SD_QFULL_THROTTLE_TIMEOUT 10 1263 1264 #define SD_THROTTLE_TRAN_BUSY 0 1265 #define SD_THROTTLE_QFULL 1 1266 1267 #define SD_THROTTLE_RESET_INTERVAL \ 1268 (sd_reset_throttle_timeout * drv_usectohz(1000000)) 1269 1270 #define SD_QFULL_THROTTLE_RESET_INTERVAL \ 1271 (sd_qfull_throttle_timeout * drv_usectohz(1000000)) 1272 1273 1274 /* 1275 * xb_pkt_flags defines 1276 * SD_XB_DMA_FREED indicates the scsi_pkt has had its DMA resources freed 1277 * by a call to scsi_dmafree(9F). The resources must be reallocated before 1278 * before a call to scsi_transport can be made again. 1279 * SD_XB_USCSICMD indicates the scsi request is a uscsi request 1280 * SD_XB_INITPKT_MASK: since this field is also used to store flags for 1281 * a scsi_init_pkt(9F) call, we need a mask to make sure that we don't 1282 * pass any unintended bits to scsi_init_pkt(9F) (ugly hack). 1283 */ 1284 #define SD_XB_DMA_FREED 0x20000000 1285 #define SD_XB_USCSICMD 0x40000000 1286 #define SD_XB_INITPKT_MASK (PKT_CONSISTENT | PKT_DMA_PARTIAL) 1287 1288 /* 1289 * Extension for the buf(9s) struct that we receive from a higher 1290 * layer. Located by b_private in the buf(9S). (The previous contents 1291 * of b_private are saved & restored before calling biodone(9F).) 1292 */ 1293 struct sd_xbuf { 1294 1295 struct sd_lun *xb_un; /* Ptr to associated sd_lun */ 1296 struct scsi_pkt *xb_pktp; /* Ptr to associated scsi_pkt */ 1297 1298 /* 1299 * xb_pktinfo points to any optional data that may be needed 1300 * by the initpkt and/or destroypkt functions. Typical 1301 * use might be to point to a struct uscsi_cmd. 1302 */ 1303 void *xb_pktinfo; 1304 1305 /* 1306 * Layer-private data area. This may be used by any layer to store 1307 * layer-specific data on a per-IO basis. Typical usage is for an 1308 * iostart routine to save some info here for later use by its 1309 * partner iodone routine. This area may be used to hold data or 1310 * a pointer to a data block that is allocated/freed by the layer's 1311 * iostart/iodone routines. Allocation & management policy for the 1312 * layer-private area is defined & implemented by each specific 1313 * layer as required. 1314 * 1315 * IMPORTANT: Since a higher layer may depend on the value in the 1316 * xb_private field, each layer must ensure that it returns the 1317 * buf/xbuf to the next higher layer (via SD_NEXT_IODONE()) with 1318 * the SAME VALUE in xb_private as when the buf/xbuf was first 1319 * received by the layer's iostart routine. Typically this is done 1320 * by the iostart routine saving the contents of xb_private into 1321 * a place in the layer-private data area, and the iodone routine 1322 * restoring the value of xb_private before deallocating the 1323 * layer-private data block and calling SD_NEXT_IODONE(). Of course, 1324 * if a layer never modifies xb_private in a buf/xbuf from a higher 1325 * layer, there will be no need to restore the value. 1326 * 1327 * Note that in the case where a layer _creates_ a buf/xbuf (such as 1328 * by calling sd_shadow_buf_alloc()) to pass to a lower layer, it is 1329 * not necessary to preserve the contents of xb_private as there is 1330 * no higher layer dependency on the value of xb_private. Such a 1331 * buf/xbuf must be deallocated by the layer that allocated it and 1332 * must *NEVER* be passed up to a higher layer. 1333 */ 1334 void *xb_private; /* Layer-private data block */ 1335 1336 /* 1337 * We do not use the b_blkno provided in the buf(9S), as we need to 1338 * make adjustments to it in the driver, but it is not a field that 1339 * the driver owns or is free to modify. 1340 */ 1341 daddr_t xb_blkno; /* Absolute block # on target */ 1342 uint64_t xb_ena; /* ena for a specific SCSI command */ 1343 1344 int xb_chain_iostart; /* iostart side index */ 1345 int xb_chain_iodone; /* iodone side index */ 1346 int xb_pkt_flags; /* Flags for scsi_init_pkt() */ 1347 ssize_t xb_dma_resid; 1348 short xb_retry_count; 1349 short xb_victim_retry_count; 1350 short xb_ua_retry_count; /* unit_attention retry counter */ 1351 short xb_nr_retry_count; /* not ready retry counter */ 1352 1353 /* 1354 * Various status and data used when a RQS command is run on 1355 * the behalf of this command. 1356 */ 1357 struct buf *xb_sense_bp; /* back ptr to buf, for RQS */ 1358 uint_t xb_sense_state; /* scsi_pkt state of RQS command */ 1359 ssize_t xb_sense_resid; /* residual of RQS command */ 1360 uchar_t xb_sense_status; /* scsi status byte of RQS command */ 1361 uchar_t xb_sense_data[SENSE_LENGTH]; /* sense data from RQS cmd */ 1362 /* 1363 * Extra sense larger than SENSE_LENGTH will be allocated 1364 * right after xb_sense_data[SENSE_LENGTH]. Please do not 1365 * add any new field after it. 1366 */ 1367 }; 1368 1369 _NOTE(SCHEME_PROTECTS_DATA("unique per pkt", sd_xbuf)) 1370 1371 #define SD_PKT_ALLOC_SUCCESS 0 1372 #define SD_PKT_ALLOC_FAILURE 1 1373 #define SD_PKT_ALLOC_FAILURE_NO_DMA 2 1374 #define SD_PKT_ALLOC_FAILURE_PKT_TOO_SMALL 3 1375 #define SD_PKT_ALLOC_FAILURE_CDB_TOO_SMALL 4 1376 1377 #define SD_GET_XBUF(bp) ((struct sd_xbuf *)((bp)->b_private)) 1378 #define SD_GET_UN(bp) ((SD_GET_XBUF(bp))->xb_un) 1379 #define SD_GET_PKTP(bp) ((SD_GET_XBUF(bp))->xb_pktp) 1380 #define SD_GET_BLKNO(bp) ((SD_GET_XBUF(bp))->xb_blkno) 1381 1382 /* 1383 * Special-purpose struct for sd_send_scsi_cmd() to pass command-specific 1384 * data through the layering chains to sd_initpkt_for_uscsi(). 1385 */ 1386 struct sd_uscsi_info { 1387 int ui_flags; 1388 struct uscsi_cmd *ui_cmdp; 1389 /* 1390 * ui_dkc is used by sd_send_scsi_SYNCHRONIZE_CACHE() to allow 1391 * for async completion notification. 1392 */ 1393 struct dk_callback ui_dkc; 1394 /* 1395 * The following fields are to be used for FMA ereport generation. 1396 */ 1397 uchar_t ui_pkt_reason; 1398 uint32_t ui_pkt_state; 1399 uint32_t ui_pkt_statistics; 1400 uint64_t ui_lba; 1401 uint64_t ui_ena; 1402 }; 1403 1404 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", sd_uscsi_info)) 1405 1406 /* 1407 * This structure is used to issue 'internal' command sequences from the 1408 * driver's attach(9E)/open(9E)/etc entry points. It provides a common context 1409 * for issuing command sequences, with the ability to issue a command 1410 * and provide expected/unexpected assessment of results at any code 1411 * level within the sd_ssc_t scope and preserve the information needed 1412 * produce telemetry for the problem, when needed, from a single 1413 * outer-most-scope point. 1414 * 1415 * The sd_ssc_t abstraction should result in well-structured code where 1416 * the basic code structure is not jeprodized by future localized improvement. 1417 * 1418 * o Scope for a sequence of commands. 1419 * o Within a scoped sequence of commands, provides a single top-level 1420 * location for initiating telementry generation from captured data. 1421 * o Provide a common place to capture command execution data and driver 1422 * assessment information for delivery to telemetry generation point. 1423 * o Mechanism to get device-as-detector (dad) and transport telemetry 1424 * information from interrupt context (sdintr) back to the internal 1425 * command 'driver-assessment' code. 1426 * o Ability to record assessment, and return information back to 1427 * top-level telemetry generation code when an unexpected condition 1428 * occurs. 1429 * o For code paths were an command itself was successful but 1430 * the data returned looks suspect, the ability to record 1431 * 'unexpected data' conditions. 1432 * o Record assessment of issuing the command and interpreting 1433 * the returned data for consumption by top-level ereport telemetry 1434 * generation code. 1435 * o All data required to produce telemetry available off single data 1436 * structure. 1437 */ 1438 typedef struct { 1439 struct sd_lun *ssc_un; 1440 struct uscsi_cmd *ssc_uscsi_cmd; 1441 struct sd_uscsi_info *ssc_uscsi_info; 1442 int ssc_flags; /* Bits for flags */ 1443 char ssc_info[1024]; /* Buffer holding for info */ 1444 } sd_ssc_t; 1445 1446 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", sd_ssc_t)) 1447 1448 /* 1449 * This struct switch different 'type-of-assessment' 1450 * as an input argument for sd_ssc_assessment 1451 * 1452 * 1453 * in sd_send_scsi_XXX or upper-level 1454 * 1455 * - SD_FMT_IGNORE 1456 * when send uscsi command failed, and 1457 * the following code check sense data properly. 1458 * we use 'ignore' to let sd_ssc_assessment 1459 * trust current and do not do additional 1460 * checking for the uscsi command. 1461 * 1462 * - SD_FMT_IGNORE_COMPROMISE 1463 * when send uscsi command failed, and 1464 * the code does not check sense data or we don't 1465 * think the checking is 100% coverage. We mark it 1466 * as 'compromise' to indicate that we need to 1467 * enhance current code in the future. 1468 * 1469 * - SD_FMT_STATUS_CHECK 1470 * when send uscsi command failed and cause sd entries 1471 * failed finally, we need to send out real reason against 1472 * status of uscsi command no matter if there is sense back 1473 * or not. 1474 * 1475 * - SD_FMT_STANDARD 1476 * when send uscsi command succeeded, and 1477 * the code does not check sense data, we need to check 1478 * it to make sure there is no 'fault'. 1479 */ 1480 enum sd_type_assessment { 1481 SD_FMT_IGNORE = 0, 1482 SD_FMT_IGNORE_COMPROMISE, 1483 SD_FMT_STATUS_CHECK, 1484 SD_FMT_STANDARD 1485 }; 1486 1487 /* 1488 * The following declaration are used as hints of severities when posting 1489 * SCSI FMA ereport. 1490 * - SD_FM_DRV_FATAL 1491 * When posting ereport with SD_FM_DRV_FATAL, the payload 1492 * "driver-assessment" will be "fail" or "fatal" depending on the 1493 * sense-key value. If driver-assessment is "fail", it will be 1494 * propagated to an upset, otherwise, a fault will be propagated. 1495 * - SD_FM_DRV_RETRY 1496 * When posting ereport with SD_FM_DRV_RETRY, the payload 1497 * "driver-assessment" will be "retry", and it will be propagated to an 1498 * upset. 1499 * - SD_FM_DRV_RECOVERY 1500 * When posting ereport with SD_FM_DRV_RECOVERY, the payload 1501 * "driver-assessment" will be "recovered", and it will be propagated to 1502 * an upset. 1503 * - SD_FM_DRV_NOTICE 1504 * When posting ereport with SD_FM_DRV_NOTICE, the payload 1505 * "driver-assessment" will be "info", and it will be propagated to an 1506 * upset. 1507 */ 1508 enum sd_driver_assessment { 1509 SD_FM_DRV_FATAL = 0, 1510 SD_FM_DRV_RETRY, 1511 SD_FM_DRV_RECOVERY, 1512 SD_FM_DRV_NOTICE 1513 }; 1514 1515 /* 1516 * The following structure is used as a buffer when posting SCSI FMA 1517 * ereport for raw i/o. It will be allocated per sd_lun when entering 1518 * sd_unit_attach and will be deallocated when entering sd_unit_detach. 1519 */ 1520 struct sd_fm_internal { 1521 sd_ssc_t fm_ssc; 1522 struct uscsi_cmd fm_ucmd; 1523 struct sd_uscsi_info fm_uinfo; 1524 int fm_log_level; 1525 }; 1526 1527 /* 1528 * Bits in ssc_flags 1529 * sd_ssc_init will mark ssc_flags = SSC_FLAGS_UNKNOWN 1530 * sd_ssc_send will mark ssc_flags = SSC_FLAGS_CMD_ISSUED & 1531 * SSC_FLAGS_NEED_ASSESSMENT 1532 * sd_ssc_assessment will clear SSC_FLAGS_CMD_ISSUED and 1533 * SSC_FLAGS_NEED_ASSESSMENT bits of ssc_flags. 1534 * SSC_FLAGS_CMD_ISSUED is to indicate whether the SCSI command has been 1535 * sent out. 1536 * SSC_FLAGS_NEED_ASSESSMENT is to guarantee we will not miss any 1537 * assessment point. 1538 */ 1539 #define SSC_FLAGS_UNKNOWN 0x00000000 1540 #define SSC_FLAGS_CMD_ISSUED 0x00000001 1541 #define SSC_FLAGS_NEED_ASSESSMENT 0x00000002 1542 #define SSC_FLAGS_TRAN_ABORT 0x00000004 1543 1544 /* 1545 * The following bits in ssc_flags are for detecting unexpected data. 1546 */ 1547 #define SSC_FLAGS_INVALID_PKT_REASON 0x00000010 1548 #define SSC_FLAGS_INVALID_STATUS 0x00000020 1549 #define SSC_FLAGS_INVALID_SENSE 0x00000040 1550 #define SSC_FLAGS_INVALID_DATA 0x00000080 1551 1552 /* 1553 * The following are the values available for sd_fm_internal::fm_log_level. 1554 * SD_FM_LOG_NSUP The driver will log things in traditional way as if 1555 * the SCSI FMA feature is unavailable. 1556 * SD_FM_LOG_SILENT The driver will not print out syslog for FMA error 1557 * telemetry, all the error telemetries will go into 1558 * FMA error log. 1559 * SD_FM_LOG_EREPORT The driver will both print the FMA error telemetry 1560 * and post the error report, but the traditional 1561 * syslog for error telemetry will be suppressed. 1562 */ 1563 #define SD_FM_LOG_NSUP 0 1564 #define SD_FM_LOG_SILENT 1 1565 #define SD_FM_LOG_EREPORT 2 1566 1567 /* 1568 * Macros and definitions for driver kstats and errstats 1569 * 1570 * Some third-party layered drivers (they know who they are) do not maintain 1571 * their open/close counts correctly which causes our kstat reporting to get 1572 * messed up & results in panics. These macros will update the driver kstats 1573 * only if the counts are valid. 1574 */ 1575 #define SD_UPDATE_COMMON_KSTATS(kstat_function, kstatp) \ 1576 if ((kstat_function) == kstat_runq_exit || \ 1577 ((kstat_function) == kstat_runq_back_to_waitq)) { \ 1578 if (((kstat_io_t *)(kstatp))->rcnt) { \ 1579 kstat_function((kstatp)); \ 1580 } else { \ 1581 cmn_err(CE_WARN, \ 1582 "kstat rcnt == 0 when exiting runq, please check\n"); \ 1583 } \ 1584 } else if ((kstat_function) == kstat_waitq_exit || \ 1585 ((kstat_function) == kstat_waitq_to_runq)) { \ 1586 if (((kstat_io_t *)(kstatp))->wcnt) { \ 1587 kstat_function(kstatp); \ 1588 } else { \ 1589 cmn_err(CE_WARN, \ 1590 "kstat wcnt == 0 when exiting waitq, please check\n"); \ 1591 } \ 1592 } else { \ 1593 kstat_function(kstatp); \ 1594 } 1595 1596 #define SD_UPDATE_KSTATS(un, kstat_function, bp) \ 1597 ASSERT(SD_GET_XBUF(bp) != NULL); \ 1598 if (SD_IS_BUFIO(SD_GET_XBUF(bp))) { \ 1599 struct kstat *pksp = \ 1600 (un)->un_pstats[SDPART((bp)->b_edev)]; \ 1601 ASSERT(mutex_owned(SD_MUTEX(un))); \ 1602 if ((un)->un_stats != NULL) { \ 1603 kstat_io_t *kip = KSTAT_IO_PTR((un)->un_stats); \ 1604 SD_UPDATE_COMMON_KSTATS(kstat_function, kip); \ 1605 } \ 1606 if (pksp != NULL) { \ 1607 kstat_io_t *kip = KSTAT_IO_PTR(pksp); \ 1608 SD_UPDATE_COMMON_KSTATS(kstat_function, kip); \ 1609 } \ 1610 } 1611 1612 #define SD_UPDATE_ERRSTATS(un, x) \ 1613 if ((un)->un_errstats != NULL) { \ 1614 struct sd_errstats *stp; \ 1615 ASSERT(mutex_owned(SD_MUTEX(un))); \ 1616 stp = (struct sd_errstats *)(un)->un_errstats->ks_data; \ 1617 stp->x.value.ui32++; \ 1618 } 1619 1620 #define SD_UPDATE_RDWR_STATS(un, bp) \ 1621 if ((un)->un_stats != NULL) { \ 1622 kstat_io_t *kip = KSTAT_IO_PTR((un)->un_stats); \ 1623 size_t n_done = (bp)->b_bcount - (bp)->b_resid; \ 1624 if ((bp)->b_flags & B_READ) { \ 1625 kip->reads++; \ 1626 kip->nread += n_done; \ 1627 } else { \ 1628 kip->writes++; \ 1629 kip->nwritten += n_done; \ 1630 } \ 1631 } 1632 1633 #define SD_UPDATE_PARTITION_STATS(un, bp) \ 1634 { \ 1635 struct kstat *pksp = (un)->un_pstats[SDPART((bp)->b_edev)]; \ 1636 if (pksp != NULL) { \ 1637 kstat_io_t *kip = KSTAT_IO_PTR(pksp); \ 1638 size_t n_done = (bp)->b_bcount - (bp)->b_resid; \ 1639 if ((bp)->b_flags & B_READ) { \ 1640 kip->reads++; \ 1641 kip->nread += n_done; \ 1642 } else { \ 1643 kip->writes++; \ 1644 kip->nwritten += n_done; \ 1645 } \ 1646 } \ 1647 } 1648 1649 1650 #endif /* defined(_KERNEL) || defined(_KMEMUSER) */ 1651 1652 1653 /* 1654 * 60 seconds is a *very* reasonable amount of time for most slow CD 1655 * operations. 1656 */ 1657 #define SD_IO_TIME 60 1658 1659 /* 1660 * 2 hours is an excessively reasonable amount of time for format operations. 1661 */ 1662 #define SD_FMT_TIME (120 * 60) 1663 1664 /* 1665 * 5 seconds is what we'll wait if we get a Busy Status back 1666 */ 1667 #define SD_BSY_TIMEOUT (drv_usectohz(5 * 1000000)) 1668 1669 /* 1670 * 100 msec. is what we'll wait if we get Unit Attention. 1671 */ 1672 #define SD_UA_RETRY_DELAY (drv_usectohz((clock_t)100000)) 1673 1674 /* 1675 * 100 msec. is what we'll wait for restarted commands. 1676 */ 1677 #define SD_RESTART_TIMEOUT (drv_usectohz((clock_t)100000)) 1678 1679 /* 1680 * 100 msec. is what we'll wait for certain retries for fibre channel 1681 * targets, 0 msec for parallel SCSI. 1682 */ 1683 #if defined(__fibre) 1684 #define SD_RETRY_DELAY (drv_usectohz(100000)) 1685 #else 1686 #define SD_RETRY_DELAY ((clock_t)0) 1687 #endif 1688 1689 /* 1690 * 60 seconds is what we will wait for to reset the 1691 * throttle back to it SD_MAX_THROTTLE. 1692 */ 1693 #define SD_RESET_THROTTLE_TIMEOUT 60 1694 1695 /* 1696 * Number of times we'll retry a normal operation. 1697 * 1698 * This includes retries due to transport failure 1699 * (need to distinguish between Target and Transport failure) 1700 * 1701 */ 1702 #if defined(__fibre) 1703 #define SD_RETRY_COUNT 3 1704 #else 1705 #define SD_RETRY_COUNT 5 1706 #endif 1707 1708 /* 1709 * Number of times we will retry for unit attention. 1710 */ 1711 #define SD_UA_RETRY_COUNT 600 1712 1713 #define SD_VICTIM_RETRY_COUNT(un) (un->un_victim_retry_count) 1714 #define CD_NOT_READY_RETRY_COUNT(un) (un->un_retry_count * 2) 1715 #define DISK_NOT_READY_RETRY_COUNT(un) (un->un_retry_count / 2) 1716 1717 1718 /* 1719 * Maximum number of units we can support 1720 * (controlled by room in minor device byte) 1721 * 1722 * Note: this value is out of date. 1723 */ 1724 #define SD_MAXUNIT 32 1725 1726 /* 1727 * 30 seconds is what we will wait for the IO to finish 1728 * before we fail the DDI_SUSPEND 1729 */ 1730 #define SD_WAIT_CMDS_COMPLETE 30 1731 1732 /* 1733 * Prevent/allow media removal flags 1734 */ 1735 #define SD_REMOVAL_ALLOW 0 1736 #define SD_REMOVAL_PREVENT 1 1737 1738 1739 /* 1740 * Drive Types (and characteristics) 1741 */ 1742 #define VIDMAX 8 1743 #define PIDMAX 16 1744 1745 1746 /* 1747 * The following #defines and type definitions for the property 1748 * processing component of the sd driver. 1749 */ 1750 1751 1752 /* Miscellaneous Definitions */ 1753 #define SD_CONF_VERSION_1 1 1754 #define SD_CONF_NOT_USED 32 1755 1756 /* 1757 * Return values from "pm-capable" property 1758 */ 1759 #define SD_PM_CAPABLE_UNDEFINED -1 1760 #define SD_PM_CAPABLE_FALSE 0 1761 #define SD_PM_CAPABLE_TRUE 1 1762 1763 /* 1764 * Property data values used in static configuration table 1765 * These are all based on device characteristics. 1766 * For fibre channel devices, the throttle value is usually 1767 * derived from the devices cmd Q depth divided by the number 1768 * of supported initiators. 1769 */ 1770 #define ELITE_THROTTLE_VALUE 10 1771 #define SEAGATE_THROTTLE_VALUE 15 1772 #define IBM_THROTTLE_VALUE 15 1773 #define ST31200N_THROTTLE_VALUE 8 1774 #define FUJITSU_THROTTLE_VALUE 15 1775 #define SYMBIOS_THROTTLE_VALUE 16 1776 #define SYMBIOS_NOTREADY_RETRIES 24 1777 #define LSI_THROTTLE_VALUE 16 1778 #define LSI_NOTREADY_RETRIES 24 1779 #define LSI_OEM_NOTREADY_RETRIES 36 1780 #define PURPLE_THROTTLE_VALUE 64 1781 #define PURPLE_BUSY_RETRIES 60 1782 #define PURPLE_RESET_RETRY_COUNT 36 1783 #define PURPLE_RESERVE_RELEASE_TIME 60 1784 #define SVE_BUSY_RETRIES 60 1785 #define SVE_RESET_RETRY_COUNT 36 1786 #define SVE_RESERVE_RELEASE_TIME 60 1787 #define SVE_THROTTLE_VALUE 10 1788 #define SVE_MIN_THROTTLE_VALUE 2 1789 #define SVE_DISKSORT_DISABLED_FLAG 1 1790 #define MASERATI_DISKSORT_DISABLED_FLAG 1 1791 #define MASERATI_LUN_RESET_ENABLED_FLAG 1 1792 #define PIRUS_THROTTLE_VALUE 64 1793 #define PIRUS_NRR_COUNT 60 1794 #define PIRUS_BUSY_RETRIES 60 1795 #define PIRUS_RESET_RETRY_COUNT 36 1796 #define PIRUS_MIN_THROTTLE_VALUE 16 1797 #define PIRUS_DISKSORT_DISABLED_FLAG 0 1798 #define PIRUS_LUN_RESET_ENABLED_FLAG 1 1799 1800 /* 1801 * Driver Property Bit Flag definitions 1802 * 1803 * Unfortunately, for historical reasons, the bit-flag definitions are 1804 * different on SPARC, INTEL, & FIBRE platforms. 1805 */ 1806 1807 /* 1808 * Bit flag telling driver to set throttle from sd.conf sd-config-list 1809 * and driver table. 1810 * 1811 * The max throttle (q-depth) property implementation is for support of 1812 * fibre channel devices that can drop an i/o request when a queue fills 1813 * up. The number of commands sent to the disk from this driver is 1814 * regulated such that queue overflows are avoided. 1815 */ 1816 #define SD_CONF_SET_THROTTLE 0 1817 #define SD_CONF_BSET_THROTTLE (1 << SD_CONF_SET_THROTTLE) 1818 1819 /* 1820 * Bit flag telling driver to set the controller type from sd.conf 1821 * sd-config-list and driver table. 1822 */ 1823 #if defined(__i386) || defined(__amd64) 1824 #define SD_CONF_SET_CTYPE 1 1825 #elif defined(__fibre) 1826 #define SD_CONF_SET_CTYPE 5 1827 #else 1828 #define SD_CONF_SET_CTYPE 1 1829 #endif 1830 #define SD_CONF_BSET_CTYPE (1 << SD_CONF_SET_CTYPE) 1831 1832 /* 1833 * Bit flag telling driver to set the not ready retry count for a device from 1834 * sd.conf sd-config-list and driver table. 1835 */ 1836 #if defined(__i386) || defined(__amd64) 1837 #define SD_CONF_SET_NOTREADY_RETRIES 10 1838 #elif defined(__fibre) 1839 #define SD_CONF_SET_NOTREADY_RETRIES 1 1840 #else 1841 #define SD_CONF_SET_NOTREADY_RETRIES 2 1842 #endif 1843 #define SD_CONF_BSET_NRR_COUNT (1 << SD_CONF_SET_NOTREADY_RETRIES) 1844 1845 /* 1846 * Bit flag telling driver to set SCSI status BUSY Retries from sd.conf 1847 * sd-config-list and driver table. 1848 */ 1849 #if defined(__i386) || defined(__amd64) 1850 #define SD_CONF_SET_BUSY_RETRIES 11 1851 #elif defined(__fibre) 1852 #define SD_CONF_SET_BUSY_RETRIES 2 1853 #else 1854 #define SD_CONF_SET_BUSY_RETRIES 5 1855 #endif 1856 #define SD_CONF_BSET_BSY_RETRY_COUNT (1 << SD_CONF_SET_BUSY_RETRIES) 1857 1858 /* 1859 * Bit flag telling driver that device does not have a valid/unique serial 1860 * number. 1861 */ 1862 #if defined(__i386) || defined(__amd64) 1863 #define SD_CONF_SET_FAB_DEVID 2 1864 #else 1865 #define SD_CONF_SET_FAB_DEVID 3 1866 #endif 1867 #define SD_CONF_BSET_FAB_DEVID (1 << SD_CONF_SET_FAB_DEVID) 1868 1869 /* 1870 * Bit flag telling driver to disable all caching for disk device. 1871 */ 1872 #if defined(__i386) || defined(__amd64) 1873 #define SD_CONF_SET_NOCACHE 3 1874 #else 1875 #define SD_CONF_SET_NOCACHE 4 1876 #endif 1877 #define SD_CONF_BSET_NOCACHE (1 << SD_CONF_SET_NOCACHE) 1878 1879 /* 1880 * Bit flag telling driver that the PLAY AUDIO command requires parms in BCD 1881 * format rather than binary. 1882 */ 1883 #if defined(__i386) || defined(__amd64) 1884 #define SD_CONF_SET_PLAYMSF_BCD 4 1885 #else 1886 #define SD_CONF_SET_PLAYMSF_BCD 6 1887 #endif 1888 #define SD_CONF_BSET_PLAYMSF_BCD (1 << SD_CONF_SET_PLAYMSF_BCD) 1889 1890 /* 1891 * Bit flag telling driver that the response from the READ SUBCHANNEL command 1892 * has BCD fields rather than binary. 1893 */ 1894 #if defined(__i386) || defined(__amd64) 1895 #define SD_CONF_SET_READSUB_BCD 5 1896 #else 1897 #define SD_CONF_SET_READSUB_BCD 7 1898 #endif 1899 #define SD_CONF_BSET_READSUB_BCD (1 << SD_CONF_SET_READSUB_BCD) 1900 1901 /* 1902 * Bit in flags telling driver that the track number fields in the READ TOC 1903 * request and respone are in BCD rather than binary. 1904 */ 1905 #if defined(__i386) || defined(__amd64) 1906 #define SD_CONF_SET_READ_TOC_TRK_BCD 6 1907 #else 1908 #define SD_CONF_SET_READ_TOC_TRK_BCD 8 1909 #endif 1910 #define SD_CONF_BSET_READ_TOC_TRK_BCD (1 << SD_CONF_SET_READ_TOC_TRK_BCD) 1911 1912 /* 1913 * Bit flag telling driver that the address fields in the READ TOC request and 1914 * respone are in BCD rather than binary. 1915 */ 1916 #if defined(__i386) || defined(__amd64) 1917 #define SD_CONF_SET_READ_TOC_ADDR_BCD 7 1918 #else 1919 #define SD_CONF_SET_READ_TOC_ADDR_BCD 9 1920 #endif 1921 #define SD_CONF_BSET_READ_TOC_ADDR_BCD (1 << SD_CONF_SET_READ_TOC_ADDR_BCD) 1922 1923 /* 1924 * Bit flag telling the driver that the device doesn't support the READ HEADER 1925 * command. 1926 */ 1927 #if defined(__i386) || defined(__amd64) 1928 #define SD_CONF_SET_NO_READ_HEADER 8 1929 #else 1930 #define SD_CONF_SET_NO_READ_HEADER 10 1931 #endif 1932 #define SD_CONF_BSET_NO_READ_HEADER (1 << SD_CONF_SET_NO_READ_HEADER) 1933 1934 /* 1935 * Bit flag telling the driver that for the READ CD command the device uses 1936 * opcode 0xd4 rather than 0xbe. 1937 */ 1938 #if defined(__i386) || defined(__amd64) 1939 #define SD_CONF_SET_READ_CD_XD4 9 1940 #else 1941 #define SD_CONF_SET_READ_CD_XD4 11 1942 #endif 1943 #define SD_CONF_BSET_READ_CD_XD4 (1 << SD_CONF_SET_READ_CD_XD4) 1944 1945 /* 1946 * Bit flag telling the driver to set SCSI status Reset Retries 1947 * (un_reset_retry_count) from sd.conf sd-config-list and driver table (4356701) 1948 */ 1949 #define SD_CONF_SET_RST_RETRIES 12 1950 #define SD_CONF_BSET_RST_RETRIES (1 << SD_CONF_SET_RST_RETRIES) 1951 1952 /* 1953 * Bit flag telling the driver to set the reservation release timeout value 1954 * from sd.conf sd-config-list and driver table. (4367306) 1955 */ 1956 #define SD_CONF_SET_RSV_REL_TIME 13 1957 #define SD_CONF_BSET_RSV_REL_TIME (1 << SD_CONF_SET_RSV_REL_TIME) 1958 1959 /* 1960 * Bit flag telling the driver to verify that no commands are pending for a 1961 * device before issuing a Test Unit Ready. This is a fw workaround for Seagate 1962 * eliteI drives. (4392016) 1963 */ 1964 #define SD_CONF_SET_TUR_CHECK 14 1965 #define SD_CONF_BSET_TUR_CHECK (1 << SD_CONF_SET_TUR_CHECK) 1966 1967 /* 1968 * Bit in flags telling driver to set min. throttle from ssd.conf 1969 * ssd-config-list and driver table. 1970 */ 1971 #define SD_CONF_SET_MIN_THROTTLE 15 1972 #define SD_CONF_BSET_MIN_THROTTLE (1 << SD_CONF_SET_MIN_THROTTLE) 1973 1974 /* 1975 * Bit in flags telling driver to set disksort disable flag from ssd.conf 1976 * ssd-config-list and driver table. 1977 */ 1978 #define SD_CONF_SET_DISKSORT_DISABLED 16 1979 #define SD_CONF_BSET_DISKSORT_DISABLED (1 << SD_CONF_SET_DISKSORT_DISABLED) 1980 1981 /* 1982 * Bit in flags telling driver to set LUN Reset enable flag from [s]sd.conf 1983 * [s]sd-config-list and driver table. 1984 */ 1985 #define SD_CONF_SET_LUN_RESET_ENABLED 17 1986 #define SD_CONF_BSET_LUN_RESET_ENABLED (1 << SD_CONF_SET_LUN_RESET_ENABLED) 1987 1988 /* 1989 * Bit in flags telling driver that the write cache on the device is 1990 * non-volatile. 1991 */ 1992 #define SD_CONF_SET_CACHE_IS_NV 18 1993 #define SD_CONF_BSET_CACHE_IS_NV (1 << SD_CONF_SET_CACHE_IS_NV) 1994 1995 /* 1996 * This is the number of items currently settable in the sd.conf 1997 * sd-config-list. The mask value is defined for parameter checking. The 1998 * item count and mask should be updated when new properties are added. 1999 */ 2000 #define SD_CONF_MAX_ITEMS 19 2001 #define SD_CONF_BIT_MASK 0x0007FFFF 2002 2003 typedef struct { 2004 int sdt_throttle; 2005 int sdt_ctype; 2006 int sdt_not_rdy_retries; 2007 int sdt_busy_retries; 2008 int sdt_reset_retries; 2009 int sdt_reserv_rel_time; 2010 int sdt_min_throttle; 2011 int sdt_disk_sort_dis; 2012 int sdt_lun_reset_enable; 2013 int sdt_suppress_cache_flush; 2014 } sd_tunables; 2015 2016 /* Type definition for static configuration table entries */ 2017 typedef struct sd_disk_config { 2018 char device_id[25]; 2019 uint_t flags; 2020 sd_tunables *properties; 2021 } sd_disk_config_t; 2022 2023 /* 2024 * byte 4 options for 1bh command 2025 */ 2026 #define SD_TARGET_STOP 0x00 2027 #define SD_TARGET_START 0x01 2028 #define SD_TARGET_EJECT 0x02 2029 #define SD_TARGET_CLOSE 0x03 2030 2031 2032 #define SD_MODE_SENSE_PAGE3_CODE 0x03 2033 #define SD_MODE_SENSE_PAGE4_CODE 0x04 2034 2035 #define SD_MODE_SENSE_PAGE3_LENGTH \ 2036 (sizeof (struct mode_format) + MODE_PARAM_LENGTH) 2037 #define SD_MODE_SENSE_PAGE4_LENGTH \ 2038 (sizeof (struct mode_geometry) + MODE_PARAM_LENGTH) 2039 2040 /* 2041 * These command codes need to be moved to sys/scsi/generic/commands.h 2042 */ 2043 2044 /* Both versions of the Read CD command */ 2045 2046 /* the official SCMD_READ_CD now comes from cdio.h */ 2047 #define SCMD_READ_CDD4 0xd4 /* the one used by some first */ 2048 /* generation ATAPI CD drives */ 2049 2050 /* expected sector type filter values for Play and Read CD CDBs */ 2051 #define CDROM_SECTOR_TYPE_CDDA (1<<2) /* IEC 908:1987 (CDDA) */ 2052 #define CDROM_SECTOR_TYPE_MODE1 (2<<2) /* Yellow book 2048 bytes */ 2053 #define CDROM_SECTOR_TYPE_MODE2 (3<<2) /* Yellow book 2335 bytes */ 2054 #define CDROM_SECTOR_TYPE_MODE2_FORM1 (4<<2) /* 2048 bytes */ 2055 #define CDROM_SECTOR_TYPE_MODE2_FORM2 (5<<2) /* 2324 bytes */ 2056 2057 /* READ CD filter bits (cdb[9]) */ 2058 #define CDROM_READ_CD_SYNC 0x80 /* read sync field */ 2059 #define CDROM_READ_CD_HDR 0x20 /* read four byte header */ 2060 #define CDROM_READ_CD_SUBHDR 0x40 /* read sub-header */ 2061 #define CDROM_READ_CD_ALLHDRS 0x60 /* read header and sub-header */ 2062 #define CDROM_READ_CD_USERDATA 0x10 /* read user data */ 2063 #define CDROM_READ_CD_EDC_ECC 0x08 /* read EDC and ECC field */ 2064 #define CDROM_READ_CD_C2 0x02 /* read C2 error data */ 2065 #define CDROM_READ_CD_C2_BEB 0x04 /* read C2 and Block Error Bits */ 2066 2067 2068 /* 2069 * These belong in sys/scsi/generic/mode.h 2070 */ 2071 2072 /* 2073 * Mode Sense/Select Header response for Group 2 CDB. 2074 */ 2075 2076 struct mode_header_grp2 { 2077 uchar_t length_msb; /* MSB - number of bytes following */ 2078 uchar_t length_lsb; 2079 uchar_t medium_type; /* device specific */ 2080 uchar_t device_specific; /* device specfic parameters */ 2081 uchar_t resv[2]; /* reserved */ 2082 uchar_t bdesc_length_hi; /* length of block descriptor(s) */ 2083 /* (if any) */ 2084 uchar_t bdesc_length_lo; 2085 }; 2086 2087 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", mode_header_grp2)) 2088 2089 /* 2090 * Length of the Mode Parameter Header for the Group 2 Mode Select command 2091 */ 2092 #define MODE_HEADER_LENGTH_GRP2 (sizeof (struct mode_header_grp2)) 2093 #define MODE_PARAM_LENGTH_GRP2 (MODE_HEADER_LENGTH_GRP2 + MODE_BLK_DESC_LENGTH) 2094 2095 /* 2096 * Mode Page 1 - Error Recovery Page 2097 */ 2098 #define MODEPAGE_ERR_RECOVER 1 2099 2100 /* 2101 * The following buffer length define is 8 bytes for the Group 2 mode page 2102 * header, 8 bytes for the block descriptor and 26 bytes for the cdrom 2103 * capabilities page (per MMC-2) 2104 */ 2105 #define MODEPAGE_CDROM_CAP 0x2A 2106 #define MODEPAGE_CDROM_CAP_LEN 26 2107 #define BUFLEN_MODE_CDROM_CAP (MODEPAGE_CDROM_CAP_LEN + \ 2108 MODE_HEADER_LENGTH_GRP2 + MODE_BLK_DESC_LENGTH) 2109 2110 2111 /* 2112 * Power management defines 2113 */ 2114 #define SD_SPINDLE_UNINIT (-1) 2115 #define SD_SPINDLE_OFF 0 2116 #define SD_SPINDLE_ON 1 2117 #define SD_PM_NOT_SUPPORTED 2 2118 2119 2120 /* 2121 * No Need to resume if already in PM_SUSPEND state because the thread 2122 * was suspended in sdpower. It will be resumed when sdpower is invoked to make 2123 * the device active. 2124 * When the thread is suspended, the watch thread is terminated and 2125 * the token is NULLed so check for this condition. 2126 * If there's a thread that can be resumed, ie. token is not NULL, then 2127 * it can be resumed. 2128 */ 2129 #define SD_OK_TO_RESUME_SCSI_WATCHER(un) (un->un_swr_token != NULL) 2130 /* 2131 * No Need to resume if already in PM_SUSPEND state because the thread 2132 * was suspended in sdpower. It will be resumed when sdpower is invoked to make 2133 * the device active. 2134 * When the thread is suspended, the watch thread is terminated and 2135 * the token is NULLed so check for this condition. 2136 */ 2137 #define SD_OK_TO_SUSPEND_SCSI_WATCHER(un) (un->un_swr_token != NULL) 2138 #define SD_DEVICE_IS_IN_LOW_POWER(un) ((un->un_f_pm_is_enabled) && \ 2139 (un->un_pm_count < 0)) 2140 /* 2141 * Could move this define to some thing like log sense.h in SCSA headers 2142 * But for now let it live here. 2143 */ 2144 #define START_STOP_CYCLE_COUNTER_PAGE_SIZE 0x28 2145 #define START_STOP_CYCLE_PAGE 0x0E 2146 #define START_STOP_CYCLE_VU_PAGE 0x31 2147 2148 /* CD-ROM Error Recovery Parameters page (0x01) */ 2149 #define MODEPAGE_ERR_RECOV 0x1 2150 #define BUFLEN_CHG_BLK_MODE MODE_HEADER_LENGTH + MODE_BLK_DESC_LENGTH 2151 2152 /* 2153 * Vendor Specific (Toshiba) CD-ROM Speed page (0x31) 2154 * 2155 * The following buffer length define is 4 bytes for the Group 0 mode page 2156 * header, 8 bytes for the block descriptor and 4 bytes for the mode speed page. 2157 */ 2158 #define MODEPAGE_CDROM_SPEED_LEN 4 2159 #define BUFLEN_MODE_CDROM_SPEED MODEPAGE_CDROM_SPEED_LEN +\ 2160 MODE_HEADER_LENGTH +\ 2161 MODE_BLK_DESC_LENGTH 2162 #define SD_SPEED_1X 176 2163 2164 /* CD-ROM Audio Control Parameters page (0x0E) */ 2165 #define MODEPAGE_AUDIO_CTRL 0x0E 2166 #define MODEPAGE_AUDIO_CTRL_LEN 16 2167 2168 /* CD-ROM Sony Read Offset Defines */ 2169 #define SONY_SESSION_OFFSET_LEN 12 2170 #define SONY_SESSION_OFFSET_KEY 0x40 2171 #define SONY_SESSION_OFFSET_VALID 0x0a 2172 2173 /* 2174 * CD-ROM Write Protect Defines 2175 * 2176 * Bit 7 of the device specific field of the mode page header is the write 2177 * protect bit. 2178 */ 2179 #define WRITE_PROTECT 0x80 2180 2181 /* 2182 * Define for the length of a profile header returned in response to the 2183 * GET CONFIGURATION command 2184 */ 2185 #define SD_PROFILE_HEADER_LEN 8 /* bytes */ 2186 2187 /* 2188 * Define the length of the data in response to the GET CONFIGURATION 2189 * command. The 3rd byte of the feature descriptor contains the 2190 * current feature field that is of interest. This field begins 2191 * after the feature header which is 8 bytes. This variable length 2192 * was increased in size from 11 to 24 because some devices became 2193 * unresponsive with the smaller size. 2194 */ 2195 #define SD_CURRENT_FEATURE_LEN 24 /* bytes */ 2196 2197 /* 2198 * Feature codes associated with GET CONFIGURATION command for supported 2199 * devices. 2200 */ 2201 #define RANDOM_WRITABLE 0x20 2202 #define HARDWARE_DEFECT_MANAGEMENT 0x24 2203 2204 /* 2205 * Could move this define to some thing like log sense.h in SCSA headers 2206 * But for now let it live here. 2207 */ 2208 #define TEMPERATURE_PAGE 0x0D 2209 #define TEMPERATURE_PAGE_SIZE 16 /* bytes */ 2210 2211 /* delay time used for sd_media_watch_cb delayed cv broadcast */ 2212 #define MEDIA_ACCESS_DELAY 2000000 2213 2214 2215 /* SCSI power on or bus device reset additional sense code */ 2216 #define SD_SCSI_RESET_SENSE_CODE 0x29 2217 2218 /* 2219 * These defines are for the Vital Product Data Pages in the inquiry command. 2220 * They are the bits in the un_vpd_page mask, telling the supported pages. 2221 */ 2222 #define SD_VPD_SUPPORTED_PG 0x01 /* 0x00 - Supported VPD pages */ 2223 #define SD_VPD_UNIT_SERIAL_PG 0x02 /* 0x80 - Unit Serial Number */ 2224 #define SD_VPD_OPERATING_PG 0x04 /* 0x81 - Implemented Op Defs */ 2225 #define SD_VPD_ASCII_OP_PG 0x08 /* 0x82 - ASCII Op Defs */ 2226 #define SD_VPD_DEVID_WWN_PG 0x10 /* 0x83 - Device Identification */ 2227 #define SD_VPD_EXTENDED_DATA_PG 0x80 /* 0x86 - Extended data about the lun */ 2228 2229 /* 2230 * Non-volatile cache support 2231 * 2232 * Bit 1 of the byte 6 in the Extended INQUIRY data VPD page 2233 * is NV_SUP bit: An NV_SUP bit set to one indicates that 2234 * the device server supports a non-volatile cache. An 2235 * NV_SUP bit set to zero indicates that the device 2236 * server may or may not support a non-volatile cache. 2237 * 2238 * Bit 2 of the byte 1 in the SYNC CACHE command is SYNC_NV 2239 * bit: The SYNC_NV bit specifies whether the device server 2240 * is required to synchronize volatile and non-volatile 2241 * caches. 2242 */ 2243 #define SD_VPD_NV_SUP 0x02 2244 #define SD_SYNC_NV_BIT 0x04 2245 2246 /* 2247 * Addition from sddef.intel.h 2248 */ 2249 #if defined(__i386) || defined(__amd64) 2250 2251 #define P0_RAW_DISK (NDKMAP) 2252 #define FDISK_P1 (NDKMAP+1) 2253 #define FDISK_P2 (NDKMAP+2) 2254 #define FDISK_P3 (NDKMAP+3) 2255 #define FDISK_P4 (NDKMAP+4) 2256 2257 #endif /* __i386 || __amd64 */ 2258 2259 #ifdef __cplusplus 2260 } 2261 #endif 2262 2263 2264 #endif /* _SYS_SCSI_TARGETS_SDDEF_H */ 2265