ctl_private.h revision 268692
1/*- 2 * Copyright (c) 2003, 2004, 2005, 2008 Silicon Graphics International Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 17 * NO WARRANTY 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGES. 29 * 30 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_private.h#7 $ 31 * $FreeBSD: stable/10/sys/cam/ctl/ctl_private.h 268692 2014-07-15 17:14:53Z mav $ 32 */ 33/* 34 * CAM Target Layer driver private data structures/definitions. 35 * 36 * Author: Ken Merry <ken@FreeBSD.org> 37 */ 38 39#ifndef _CTL_PRIVATE_H_ 40#define _CTL_PRIVATE_H_ 41 42/* 43 * SCSI vendor and product names. 44 */ 45#define CTL_VENDOR "FREEBSD " 46#define CTL_DIRECT_PRODUCT "CTLDISK " 47#define CTL_PROCESSOR_PRODUCT "CTLPROCESSOR " 48#define CTL_UNKNOWN_PRODUCT "CTLDEVICE " 49 50struct ctl_fe_ioctl_startstop_info { 51 struct cv sem; 52 struct ctl_hard_startstop_info hs_info; 53}; 54 55struct ctl_fe_ioctl_bbrread_info { 56 struct cv sem; 57 struct ctl_bbrread_info *bbr_info; 58 int wakeup_done; 59 struct mtx *lock; 60}; 61 62typedef enum { 63 CTL_IOCTL_INPROG, 64 CTL_IOCTL_DATAMOVE, 65 CTL_IOCTL_DONE 66} ctl_fe_ioctl_state; 67 68struct ctl_fe_ioctl_params { 69 struct cv sem; 70 struct mtx ioctl_mtx; 71 ctl_fe_ioctl_state state; 72}; 73 74#define CTL_POOL_ENTRIES_INTERNAL 200 75#define CTL_POOL_ENTRIES_EMERGENCY 300 76#define CTL_POOL_ENTRIES_OTHER_SC 200 77 78typedef enum { 79 CTL_POOL_INTERNAL, 80 CTL_POOL_FETD, 81 CTL_POOL_EMERGENCY, 82 CTL_POOL_4OTHERSC 83} ctl_pool_type; 84 85typedef enum { 86 CTL_POOL_FLAG_NONE = 0x00, 87 CTL_POOL_FLAG_INVALID = 0x01 88} ctl_pool_flags; 89 90struct ctl_io_pool { 91 ctl_pool_type type; 92 ctl_pool_flags flags; 93 uint32_t id; 94 struct ctl_softc *ctl_softc; 95 uint32_t refcount; 96 uint64_t total_allocated; 97 uint64_t total_freed; 98 int32_t total_ctl_io; 99 int32_t free_ctl_io; 100 STAILQ_HEAD(, ctl_io_hdr) free_queue; 101 STAILQ_ENTRY(ctl_io_pool) links; 102}; 103 104typedef enum { 105 CTL_IOCTL_FLAG_NONE = 0x00, 106 CTL_IOCTL_FLAG_ENABLED = 0x01 107} ctl_ioctl_flags; 108 109struct ctl_ioctl_info { 110 ctl_ioctl_flags flags; 111 uint32_t cur_tag_num; 112 struct ctl_port port; 113 char port_name[24]; 114}; 115 116typedef enum { 117 CTL_SER_BLOCK, 118 CTL_SER_EXTENT, 119 CTL_SER_PASS, 120 CTL_SER_SKIP 121} ctl_serialize_action; 122 123typedef enum { 124 CTL_ACTION_BLOCK, 125 CTL_ACTION_OVERLAP, 126 CTL_ACTION_OVERLAP_TAG, 127 CTL_ACTION_PASS, 128 CTL_ACTION_SKIP, 129 CTL_ACTION_ERROR 130} ctl_action; 131 132/* 133 * WARNING: Keep the bottom nibble here free, we OR in the data direction 134 * flags for each command. 135 * 136 * Note: "OK_ON_ALL_LUNS" == we don't have to have a lun configured 137 * "OK_ON_BOTH" == we have to have a lun configured 138 * "SA5" == command has 5-bit service action at byte 1 139 */ 140typedef enum { 141 CTL_CMD_FLAG_NONE = 0x0000, 142 CTL_CMD_FLAG_NO_SENSE = 0x0010, 143 CTL_CMD_FLAG_OK_ON_ALL_LUNS = 0x0020, 144 CTL_CMD_FLAG_ALLOW_ON_RESV = 0x0040, 145 CTL_CMD_FLAG_OK_ON_PROC = 0x0100, 146 CTL_CMD_FLAG_OK_ON_SLUN = 0x0200, 147 CTL_CMD_FLAG_OK_ON_BOTH = 0x0300, 148 CTL_CMD_FLAG_OK_ON_STOPPED = 0x0400, 149 CTL_CMD_FLAG_OK_ON_INOPERABLE = 0x0800, 150 CTL_CMD_FLAG_OK_ON_OFFLINE = 0x1000, 151 CTL_CMD_FLAG_OK_ON_SECONDARY = 0x2000, 152 CTL_CMD_FLAG_ALLOW_ON_PR_RESV = 0x4000, 153 CTL_CMD_FLAG_SA5 = 0x8000 154} ctl_cmd_flags; 155 156typedef enum { 157 CTL_SERIDX_TUR = 0, 158 CTL_SERIDX_READ, 159 CTL_SERIDX_WRITE, 160 CTL_SERIDX_UNMAP, 161 CTL_SERIDX_MD_SNS, 162 CTL_SERIDX_MD_SEL, 163 CTL_SERIDX_RQ_SNS, 164 CTL_SERIDX_INQ, 165 CTL_SERIDX_RD_CAP, 166 CTL_SERIDX_RESV, 167 CTL_SERIDX_REL, 168 CTL_SERIDX_LOG_SNS, 169 CTL_SERIDX_FORMAT, 170 CTL_SERIDX_START, 171 CTL_SERIDX_PRES_IN, 172 CTL_SERIDX_PRES_OUT, 173 CTL_SERIDX_MAIN_IN, 174 /* TBD: others to be filled in as needed */ 175 CTL_SERIDX_COUNT, /* LAST, not a normal code, provides # codes */ 176 CTL_SERIDX_INVLD = CTL_SERIDX_COUNT 177} ctl_seridx; 178 179typedef int ctl_opfunc(struct ctl_scsiio *ctsio); 180 181struct ctl_cmd_entry { 182 ctl_opfunc *execute; 183 ctl_seridx seridx; 184 ctl_cmd_flags flags; 185 ctl_lun_error_pattern pattern; 186 uint8_t length; /* CDB length */ 187 uint8_t usage[15]; /* Mask of allowed CDB bits 188 * after the opcode byte. */ 189}; 190 191typedef enum { 192 CTL_LUN_NONE = 0x000, 193 CTL_LUN_CONTROL = 0x001, 194 CTL_LUN_RESERVED = 0x002, 195 CTL_LUN_INVALID = 0x004, 196 CTL_LUN_DISABLED = 0x008, 197 CTL_LUN_MALLOCED = 0x010, 198 CTL_LUN_STOPPED = 0x020, 199 CTL_LUN_INOPERABLE = 0x040, 200 CTL_LUN_OFFLINE = 0x080, 201 CTL_LUN_PR_RESERVED = 0x100, 202 CTL_LUN_PRIMARY_SC = 0x200, 203 CTL_LUN_SENSE_DESC = 0x400 204} ctl_lun_flags; 205 206typedef enum { 207 CTLBLOCK_FLAG_NONE = 0x00, 208 CTLBLOCK_FLAG_INVALID = 0x01 209} ctlblock_flags; 210 211union ctl_softcs { 212 struct ctl_softc *ctl_softc; 213 struct ctlblock_softc *ctlblock_softc; 214}; 215 216/* 217 * Mode page defaults. 218 */ 219#if 0 220/* 221 * These values make Solaris trim off some of the capacity. 222 */ 223#define CTL_DEFAULT_SECTORS_PER_TRACK 63 224#define CTL_DEFAULT_HEADS 255 225/* 226 * These values seem to work okay. 227 */ 228#define CTL_DEFAULT_SECTORS_PER_TRACK 63 229#define CTL_DEFAULT_HEADS 16 230/* 231 * These values work reasonably well. 232 */ 233#define CTL_DEFAULT_SECTORS_PER_TRACK 512 234#define CTL_DEFAULT_HEADS 64 235#endif 236 237/* 238 * Solaris is somewhat picky about how many heads and sectors per track you 239 * have defined in mode pages 3 and 4. These values seem to cause Solaris 240 * to get the capacity more or less right when you run the format tool. 241 * They still have problems when dealing with devices larger than 1TB, 242 * but there isn't anything we can do about that. 243 * 244 * For smaller LUN sizes, this ends up causing the number of cylinders to 245 * work out to 0. Solaris actually recognizes that and comes up with its 246 * own bogus geometry to fit the actual capacity of the drive. They really 247 * should just give up on geometry and stick to the read capacity 248 * information alone for modern disk drives. 249 * 250 * One thing worth mentioning about Solaris' mkfs command is that it 251 * doesn't like sectors per track values larger than 256. 512 seems to 252 * work okay for format, but causes problems when you try to make a 253 * filesystem. 254 * 255 * Another caveat about these values: the product of these two values 256 * really should be a power of 2. This is because of the simplistic 257 * shift-based calculation that we have to use on the i386 platform to 258 * calculate the number of cylinders here. (If you use a divide, you end 259 * up calling __udivdi3(), which is a hardware FP call on the PC. On the 260 * XScale, it is done in software, so you can do that from inside the 261 * kernel.) 262 * 263 * So for the current values (256 S/T, 128 H), we get 32768, which works 264 * very nicely for calculating cylinders. 265 * 266 * If you want to change these values so that their product is no longer a 267 * power of 2, re-visit the calculation in ctl_init_page_index(). You may 268 * need to make it a bit more complicated to get the number of cylinders 269 * right. 270 */ 271#define CTL_DEFAULT_SECTORS_PER_TRACK 256 272#define CTL_DEFAULT_HEADS 128 273 274#define CTL_DEFAULT_ROTATION_RATE 10000 275 276struct ctl_page_index; 277 278typedef int ctl_modesen_handler(struct ctl_scsiio *ctsio, 279 struct ctl_page_index *page_index, 280 int pc); 281typedef int ctl_modesel_handler(struct ctl_scsiio *ctsio, 282 struct ctl_page_index *page_index, 283 uint8_t *page_ptr); 284 285typedef enum { 286 CTL_PAGE_FLAG_NONE = 0x00, 287 CTL_PAGE_FLAG_DISK_ONLY = 0x01 288} ctl_page_flags; 289 290struct ctl_page_index { 291 uint8_t page_code; 292 uint8_t subpage; 293 uint16_t page_len; 294 uint8_t *page_data; 295 ctl_page_flags page_flags; 296 ctl_modesen_handler *sense_handler; 297 ctl_modesel_handler *select_handler; 298}; 299 300#define CTL_PAGE_CURRENT 0x00 301#define CTL_PAGE_CHANGEABLE 0x01 302#define CTL_PAGE_DEFAULT 0x02 303#define CTL_PAGE_SAVED 0x03 304 305static const struct ctl_page_index page_index_template[] = { 306 {SMS_FORMAT_DEVICE_PAGE, 0, sizeof(struct scsi_format_page), NULL, 307 CTL_PAGE_FLAG_DISK_ONLY, NULL, NULL}, 308 {SMS_RIGID_DISK_PAGE, 0, sizeof(struct scsi_rigid_disk_page), NULL, 309 CTL_PAGE_FLAG_DISK_ONLY, NULL, NULL}, 310 {SMS_CACHING_PAGE, 0, sizeof(struct scsi_caching_page), NULL, 311 CTL_PAGE_FLAG_DISK_ONLY, NULL, NULL}, 312 {SMS_CONTROL_MODE_PAGE, 0, sizeof(struct scsi_control_page), NULL, 313 CTL_PAGE_FLAG_NONE, NULL, ctl_control_page_handler}, 314 {SMS_VENDOR_SPECIFIC_PAGE | SMPH_SPF, PWR_SUBPAGE_CODE, 315 sizeof(struct copan_power_subpage), NULL, CTL_PAGE_FLAG_NONE, 316 ctl_power_sp_sense_handler, ctl_power_sp_handler}, 317 {SMS_VENDOR_SPECIFIC_PAGE | SMPH_SPF, APS_SUBPAGE_CODE, 318 sizeof(struct copan_aps_subpage), NULL, CTL_PAGE_FLAG_NONE, 319 NULL, ctl_aps_sp_handler}, 320 {SMS_VENDOR_SPECIFIC_PAGE | SMPH_SPF, DBGCNF_SUBPAGE_CODE, 321 sizeof(struct copan_debugconf_subpage), NULL, CTL_PAGE_FLAG_NONE, 322 ctl_debugconf_sp_sense_handler, ctl_debugconf_sp_select_handler}, 323}; 324 325#define CTL_NUM_MODE_PAGES sizeof(page_index_template)/ \ 326 sizeof(page_index_template[0]) 327 328struct ctl_mode_pages { 329 struct scsi_format_page format_page[4]; 330 struct scsi_rigid_disk_page rigid_disk_page[4]; 331 struct scsi_caching_page caching_page[4]; 332 struct scsi_control_page control_page[4]; 333 struct copan_power_subpage power_subpage[4]; 334 struct copan_aps_subpage aps_subpage[4]; 335 struct copan_debugconf_subpage debugconf_subpage[4]; 336 struct ctl_page_index index[CTL_NUM_MODE_PAGES]; 337}; 338 339struct ctl_pending_sense { 340 ctl_ua_type ua_pending; 341 struct scsi_sense_data sense; 342}; 343 344struct ctl_lun_delay_info { 345 ctl_delay_type datamove_type; 346 uint32_t datamove_delay; 347 ctl_delay_type done_type; 348 uint32_t done_delay; 349}; 350 351typedef enum { 352 CTL_ERR_INJ_NONE = 0x00, 353 CTL_ERR_INJ_ABORTED = 0x01 354} ctl_err_inject_flags; 355 356typedef enum { 357 CTL_PR_FLAG_NONE = 0x00, 358 CTL_PR_FLAG_REGISTERED = 0x01, 359 CTL_PR_FLAG_ACTIVE_RES = 0x02 360} ctl_per_res_flags; 361 362struct ctl_per_res_info { 363 struct scsi_per_res_key res_key; 364 uint8_t registered; 365}; 366 367#define CTL_PR_ALL_REGISTRANTS 0xFFFF 368#define CTL_PR_NO_RESERVATION 0xFFF0 369 370struct ctl_devid { 371 int len; 372 uint8_t data[]; 373}; 374 375/* 376 * For report target port groups. 377 */ 378#define NUM_TARGET_PORT_GROUPS 2 379 380struct ctl_lun { 381 struct mtx lun_lock; 382 struct ctl_id target; 383 uint64_t lun; 384 ctl_lun_flags flags; 385 STAILQ_HEAD(,ctl_error_desc) error_list; 386 uint64_t error_serial; 387 struct ctl_softc *ctl_softc; 388 struct ctl_be_lun *be_lun; 389 struct ctl_backend_driver *backend; 390 int io_count; 391 struct ctl_lun_delay_info delay_info; 392 int sync_interval; 393 int sync_count; 394 TAILQ_HEAD(ctl_ooaq, ctl_io_hdr) ooa_queue; 395 TAILQ_HEAD(ctl_blockq,ctl_io_hdr) blocked_queue; 396 STAILQ_ENTRY(ctl_lun) links; 397 STAILQ_ENTRY(ctl_lun) run_links; 398 struct ctl_nexus rsv_nexus; 399 uint32_t have_ca[CTL_MAX_INITIATORS >> 5]; 400 struct ctl_pending_sense pending_sense[CTL_MAX_INITIATORS]; 401 struct ctl_mode_pages mode_pages; 402 struct ctl_lun_io_stats stats; 403 struct ctl_per_res_info per_res[2*CTL_MAX_INITIATORS]; 404 unsigned int PRGeneration; 405 int pr_key_count; 406 uint16_t pr_res_idx; 407 uint8_t res_type; 408 uint8_t write_buffer[524288]; 409 struct ctl_devid *lun_devid; 410}; 411 412typedef enum { 413 CTL_FLAG_REAL_SYNC = 0x02, 414 CTL_FLAG_MASTER_SHELF = 0x04 415} ctl_gen_flags; 416 417#define CTL_MAX_THREADS 16 418 419struct ctl_thread { 420 struct mtx_padalign queue_lock; 421 struct ctl_softc *ctl_softc; 422 struct thread *thread; 423 STAILQ_HEAD(, ctl_io_hdr) incoming_queue; 424 STAILQ_HEAD(, ctl_io_hdr) rtr_queue; 425 STAILQ_HEAD(, ctl_io_hdr) done_queue; 426 STAILQ_HEAD(, ctl_io_hdr) isc_queue; 427}; 428 429struct ctl_softc { 430 struct mtx ctl_lock; 431 struct cdev *dev; 432 int open_count; 433 struct ctl_id target; 434 int num_disks; 435 int num_luns; 436 ctl_gen_flags flags; 437 ctl_ha_mode ha_mode; 438 int inquiry_pq_no_lun; 439 struct sysctl_ctx_list sysctl_ctx; 440 struct sysctl_oid *sysctl_tree; 441 struct ctl_ioctl_info ioctl_info; 442 struct ctl_io_pool *internal_pool; 443 struct ctl_io_pool *emergency_pool; 444 struct ctl_io_pool *othersc_pool; 445 struct proc *ctl_proc; 446 int targ_online; 447 uint32_t ctl_lun_mask[CTL_MAX_LUNS >> 5]; 448 struct ctl_lun *ctl_luns[CTL_MAX_LUNS]; 449 uint32_t ctl_port_mask; 450 uint64_t aps_locked_lun; 451 STAILQ_HEAD(, ctl_lun) lun_list; 452 STAILQ_HEAD(, ctl_be_lun) pending_lun_queue; 453 uint32_t num_frontends; 454 STAILQ_HEAD(, ctl_frontend) fe_list; 455 uint32_t num_ports; 456 STAILQ_HEAD(, ctl_port) port_list; 457 struct ctl_port *ctl_ports[CTL_MAX_PORTS]; 458 uint32_t num_backends; 459 STAILQ_HEAD(, ctl_backend_driver) be_list; 460 struct mtx pool_lock; 461 uint32_t num_pools; 462 uint32_t cur_pool_id; 463 STAILQ_HEAD(, ctl_io_pool) io_pools; 464 time_t last_print_jiffies; 465 uint32_t skipped_prints; 466 struct ctl_thread threads[CTL_MAX_THREADS]; 467}; 468 469#ifdef _KERNEL 470 471extern const struct ctl_cmd_entry ctl_cmd_table[256]; 472 473uint32_t ctl_get_initindex(struct ctl_nexus *nexus); 474int ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 475 uint32_t total_ctl_io, struct ctl_io_pool **npool); 476void ctl_pool_free(struct ctl_io_pool *pool); 477int ctl_scsi_release(struct ctl_scsiio *ctsio); 478int ctl_scsi_reserve(struct ctl_scsiio *ctsio); 479int ctl_start_stop(struct ctl_scsiio *ctsio); 480int ctl_sync_cache(struct ctl_scsiio *ctsio); 481int ctl_format(struct ctl_scsiio *ctsio); 482int ctl_read_buffer(struct ctl_scsiio *ctsio); 483int ctl_write_buffer(struct ctl_scsiio *ctsio); 484int ctl_write_same(struct ctl_scsiio *ctsio); 485int ctl_unmap(struct ctl_scsiio *ctsio); 486int ctl_mode_select(struct ctl_scsiio *ctsio); 487int ctl_mode_sense(struct ctl_scsiio *ctsio); 488int ctl_read_capacity(struct ctl_scsiio *ctsio); 489int ctl_read_capacity_16(struct ctl_scsiio *ctsio); 490int ctl_read_write(struct ctl_scsiio *ctsio); 491int ctl_cnw(struct ctl_scsiio *ctsio); 492int ctl_report_luns(struct ctl_scsiio *ctsio); 493int ctl_request_sense(struct ctl_scsiio *ctsio); 494int ctl_tur(struct ctl_scsiio *ctsio); 495int ctl_verify(struct ctl_scsiio *ctsio); 496int ctl_inquiry(struct ctl_scsiio *ctsio); 497int ctl_persistent_reserve_in(struct ctl_scsiio *ctsio); 498int ctl_persistent_reserve_out(struct ctl_scsiio *ctsio); 499int ctl_report_tagret_port_groups(struct ctl_scsiio *ctsio); 500int ctl_report_supported_opcodes(struct ctl_scsiio *ctsio); 501int ctl_report_supported_tmf(struct ctl_scsiio *ctsio); 502int ctl_report_timestamp(struct ctl_scsiio *ctsio); 503int ctl_isc(struct ctl_scsiio *ctsio); 504 505#endif /* _KERNEL */ 506 507#endif /* _CTL_PRIVATE_H_ */ 508 509/* 510 * vim: ts=8 511 */ 512