1 /*- 2 * Copyright (c) 2003-2009 Silicon Graphics International Corp. 3 * Copyright (c) 2012 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Edward Tomasz Napierala 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16 * substantially similar to the "NO WARRANTY" disclaimer below 17 * ("Disclaimer") and any redistribution must be conditioned upon 18 * including a substantially similar Disclaimer requirement for further 19 * binary redistribution. 20 * 21 * NO WARRANTY 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGES. 33 * 34 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.c#8 $ 35 */ 36 /* 37 * CAM Target Layer, a SCSI device emulation subsystem. 38 * 39 * Author: Ken Merry <ken@FreeBSD.org> 40 */ 41 42 #define _CTL_C 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/types.h> 51 #include <sys/kthread.h> 52 #include <sys/bio.h> 53 #include <sys/fcntl.h> 54 #include <sys/lock.h> 55 #include <sys/module.h> 56 #include <sys/mutex.h> 57 #include <sys/condvar.h> 58 #include <sys/malloc.h> 59 #include <sys/conf.h> 60 #include <sys/ioccom.h> 61 #include <sys/queue.h> 62 #include <sys/sbuf.h> 63 #include <sys/endian.h> 64 #include <sys/sysctl.h> 65 66 #include <cam/cam.h> 67 #include <cam/scsi/scsi_all.h> 68 #include <cam/scsi/scsi_da.h> 69 #include <cam/ctl/ctl_io.h> 70 #include <cam/ctl/ctl.h> 71 #include <cam/ctl/ctl_frontend.h> 72 #include <cam/ctl/ctl_frontend_internal.h> 73 #include <cam/ctl/ctl_util.h> 74 #include <cam/ctl/ctl_backend.h> 75 #include <cam/ctl/ctl_ioctl.h> 76 #include <cam/ctl/ctl_ha.h> 77 #include <cam/ctl/ctl_private.h> 78 #include <cam/ctl/ctl_debug.h> 79 #include <cam/ctl/ctl_scsi_all.h> 80 #include <cam/ctl/ctl_error.h> 81 82 struct ctl_softc *control_softc = NULL; 83 84 /* 85 * The default is to run with CTL_DONE_THREAD turned on. Completed 86 * transactions are queued for processing by the CTL work thread. When 87 * CTL_DONE_THREAD is not defined, completed transactions are processed in 88 * the caller's context. 89 */ 90 #define CTL_DONE_THREAD 91 92 /* 93 * Use the serial number and device ID provided by the backend, rather than 94 * making up our own. 95 */ 96 #define CTL_USE_BACKEND_SN 97 98 /* 99 * Size and alignment macros needed for Copan-specific HA hardware. These 100 * can go away when the HA code is re-written, and uses busdma for any 101 * hardware. 102 */ 103 #define CTL_ALIGN_8B(target, source, type) \ 104 if (((uint32_t)source & 0x7) != 0) \ 105 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 106 else \ 107 target = (type)source; 108 109 #define CTL_SIZE_8B(target, size) \ 110 if ((size & 0x7) != 0) \ 111 target = size + (0x8 - (size & 0x7)); \ 112 else \ 113 target = size; 114 115 #define CTL_ALIGN_8B_MARGIN 16 116 117 /* 118 * Template mode pages. 119 */ 120 121 /* 122 * Note that these are default values only. The actual values will be 123 * filled in when the user does a mode sense. 124 */ 125 static struct copan_power_subpage power_page_default = { 126 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 127 /*subpage*/ PWR_SUBPAGE_CODE, 128 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 129 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 130 /*page_version*/ PWR_VERSION, 131 /* total_luns */ 26, 132 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 133 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0} 136 }; 137 138 static struct copan_power_subpage power_page_changeable = { 139 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 140 /*subpage*/ PWR_SUBPAGE_CODE, 141 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 142 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 143 /*page_version*/ 0, 144 /* total_luns */ 0, 145 /* max_active_luns*/ 0, 146 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 147 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 148 0, 0, 0, 0, 0, 0} 149 }; 150 151 static struct copan_aps_subpage aps_page_default = { 152 APS_PAGE_CODE | SMPH_SPF, //page_code 153 APS_SUBPAGE_CODE, //subpage 154 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 155 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 156 APS_VERSION, //page_version 157 0, //lock_active 158 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 159 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 160 0, 0, 0, 0, 0} //reserved 161 }; 162 163 static struct copan_aps_subpage aps_page_changeable = { 164 APS_PAGE_CODE | SMPH_SPF, //page_code 165 APS_SUBPAGE_CODE, //subpage 166 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 167 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 168 0, //page_version 169 0, //lock_active 170 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 171 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 172 0, 0, 0, 0, 0} //reserved 173 }; 174 175 static struct copan_debugconf_subpage debugconf_page_default = { 176 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 177 DBGCNF_SUBPAGE_CODE, /* subpage */ 178 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 179 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 180 DBGCNF_VERSION, /* page_version */ 181 {CTL_TIME_IO_DEFAULT_SECS>>8, 182 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 183 }; 184 185 static struct copan_debugconf_subpage debugconf_page_changeable = { 186 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 187 DBGCNF_SUBPAGE_CODE, /* subpage */ 188 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 189 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 190 0, /* page_version */ 191 {0xff,0xff}, /* ctl_time_io_secs */ 192 }; 193 194 static struct scsi_format_page format_page_default = { 195 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 196 /*page_length*/sizeof(struct scsi_format_page) - 2, 197 /*tracks_per_zone*/ {0, 0}, 198 /*alt_sectors_per_zone*/ {0, 0}, 199 /*alt_tracks_per_zone*/ {0, 0}, 200 /*alt_tracks_per_lun*/ {0, 0}, 201 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 202 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 203 /*bytes_per_sector*/ {0, 0}, 204 /*interleave*/ {0, 0}, 205 /*track_skew*/ {0, 0}, 206 /*cylinder_skew*/ {0, 0}, 207 /*flags*/ SFP_HSEC, 208 /*reserved*/ {0, 0, 0} 209 }; 210 211 static struct scsi_format_page format_page_changeable = { 212 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 213 /*page_length*/sizeof(struct scsi_format_page) - 2, 214 /*tracks_per_zone*/ {0, 0}, 215 /*alt_sectors_per_zone*/ {0, 0}, 216 /*alt_tracks_per_zone*/ {0, 0}, 217 /*alt_tracks_per_lun*/ {0, 0}, 218 /*sectors_per_track*/ {0, 0}, 219 /*bytes_per_sector*/ {0, 0}, 220 /*interleave*/ {0, 0}, 221 /*track_skew*/ {0, 0}, 222 /*cylinder_skew*/ {0, 0}, 223 /*flags*/ 0, 224 /*reserved*/ {0, 0, 0} 225 }; 226 227 static struct scsi_rigid_disk_page rigid_disk_page_default = { 228 /*page_code*/SMS_RIGID_DISK_PAGE, 229 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 230 /*cylinders*/ {0, 0, 0}, 231 /*heads*/ CTL_DEFAULT_HEADS, 232 /*start_write_precomp*/ {0, 0, 0}, 233 /*start_reduced_current*/ {0, 0, 0}, 234 /*step_rate*/ {0, 0}, 235 /*landing_zone_cylinder*/ {0, 0, 0}, 236 /*rpl*/ SRDP_RPL_DISABLED, 237 /*rotational_offset*/ 0, 238 /*reserved1*/ 0, 239 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 240 CTL_DEFAULT_ROTATION_RATE & 0xff}, 241 /*reserved2*/ {0, 0} 242 }; 243 244 static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 245 /*page_code*/SMS_RIGID_DISK_PAGE, 246 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 247 /*cylinders*/ {0, 0, 0}, 248 /*heads*/ 0, 249 /*start_write_precomp*/ {0, 0, 0}, 250 /*start_reduced_current*/ {0, 0, 0}, 251 /*step_rate*/ {0, 0}, 252 /*landing_zone_cylinder*/ {0, 0, 0}, 253 /*rpl*/ 0, 254 /*rotational_offset*/ 0, 255 /*reserved1*/ 0, 256 /*rotation_rate*/ {0, 0}, 257 /*reserved2*/ {0, 0} 258 }; 259 260 static struct scsi_caching_page caching_page_default = { 261 /*page_code*/SMS_CACHING_PAGE, 262 /*page_length*/sizeof(struct scsi_caching_page) - 2, 263 /*flags1*/ SCP_DISC | SCP_WCE, 264 /*ret_priority*/ 0, 265 /*disable_pf_transfer_len*/ {0xff, 0xff}, 266 /*min_prefetch*/ {0, 0}, 267 /*max_prefetch*/ {0xff, 0xff}, 268 /*max_pf_ceiling*/ {0xff, 0xff}, 269 /*flags2*/ 0, 270 /*cache_segments*/ 0, 271 /*cache_seg_size*/ {0, 0}, 272 /*reserved*/ 0, 273 /*non_cache_seg_size*/ {0, 0, 0} 274 }; 275 276 static struct scsi_caching_page caching_page_changeable = { 277 /*page_code*/SMS_CACHING_PAGE, 278 /*page_length*/sizeof(struct scsi_caching_page) - 2, 279 /*flags1*/ 0, 280 /*ret_priority*/ 0, 281 /*disable_pf_transfer_len*/ {0, 0}, 282 /*min_prefetch*/ {0, 0}, 283 /*max_prefetch*/ {0, 0}, 284 /*max_pf_ceiling*/ {0, 0}, 285 /*flags2*/ 0, 286 /*cache_segments*/ 0, 287 /*cache_seg_size*/ {0, 0}, 288 /*reserved*/ 0, 289 /*non_cache_seg_size*/ {0, 0, 0} 290 }; 291 292 static struct scsi_control_page control_page_default = { 293 /*page_code*/SMS_CONTROL_MODE_PAGE, 294 /*page_length*/sizeof(struct scsi_control_page) - 2, 295 /*rlec*/0, 296 /*queue_flags*/0, 297 /*eca_and_aen*/0, 298 /*reserved*/0, 299 /*aen_holdoff_period*/{0, 0} 300 }; 301 302 static struct scsi_control_page control_page_changeable = { 303 /*page_code*/SMS_CONTROL_MODE_PAGE, 304 /*page_length*/sizeof(struct scsi_control_page) - 2, 305 /*rlec*/SCP_DSENSE, 306 /*queue_flags*/0, 307 /*eca_and_aen*/0, 308 /*reserved*/0, 309 /*aen_holdoff_period*/{0, 0} 310 }; 311 312 313 /* 314 * XXX KDM move these into the softc. 315 */ 316 static int rcv_sync_msg; 317 static int persis_offset; 318 static uint8_t ctl_pause_rtr; 319 static int ctl_is_single = 1; 320 static int index_to_aps_page; 321 322 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 323 324 /* 325 * Serial number (0x80), device id (0x83), and supported pages (0x00) 326 */ 327 #define SCSI_EVPD_NUM_SUPPORTED_PAGES 3 328 329 static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 330 int param); 331 static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 332 static int ctl_init(void); 333 void ctl_shutdown(void); 334 static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 335 static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 336 static void ctl_ioctl_online(void *arg); 337 static void ctl_ioctl_offline(void *arg); 338 static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 339 static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 340 static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 341 static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 342 static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 343 static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 344 static int ctl_ioctl_submit_wait(union ctl_io *io); 345 static void ctl_ioctl_datamove(union ctl_io *io); 346 static void ctl_ioctl_done(union ctl_io *io); 347 static void ctl_ioctl_hard_startstop_callback(void *arg, 348 struct cfi_metatask *metatask); 349 static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 350 static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 351 struct ctl_ooa *ooa_hdr, 352 struct ctl_ooa_entry *kern_entries); 353 static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 354 struct thread *td); 355 uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 356 uint32_t ctl_port_idx(int port_num); 357 #ifdef unused 358 static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 359 uint32_t targ_target, uint32_t targ_lun, 360 int can_wait); 361 static void ctl_kfree_io(union ctl_io *io); 362 #endif /* unused */ 363 static void ctl_free_io_internal(union ctl_io *io, int have_lock); 364 static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 365 struct ctl_be_lun *be_lun, struct ctl_id target_id); 366 static int ctl_free_lun(struct ctl_lun *lun); 367 static void ctl_create_lun(struct ctl_be_lun *be_lun); 368 /** 369 static void ctl_failover_change_pages(struct ctl_softc *softc, 370 struct ctl_scsiio *ctsio, int master); 371 **/ 372 373 static int ctl_do_mode_select(union ctl_io *io); 374 static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 375 uint64_t res_key, uint64_t sa_res_key, 376 uint8_t type, uint32_t residx, 377 struct ctl_scsiio *ctsio, 378 struct scsi_per_res_out *cdb, 379 struct scsi_per_res_out_parms* param); 380 static void ctl_pro_preempt_other(struct ctl_lun *lun, 381 union ctl_ha_msg *msg); 382 static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 383 static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 384 static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 385 static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 386 static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 387 static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 388 static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 389 static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 390 static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 391 union ctl_io *ooa_io); 392 static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 393 union ctl_io *starting_io); 394 static int ctl_check_blocked(struct ctl_lun *lun); 395 static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 396 struct ctl_lun *lun, 397 struct ctl_cmd_entry *entry, 398 struct ctl_scsiio *ctsio); 399 //static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 400 static void ctl_failover(void); 401 static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 402 struct ctl_scsiio *ctsio); 403 static int ctl_scsiio(struct ctl_scsiio *ctsio); 404 405 static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 406 static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 407 ctl_ua_type ua_type); 408 static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 409 ctl_ua_type ua_type); 410 static int ctl_abort_task(union ctl_io *io); 411 static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 412 #ifdef CTL_IO_DELAY 413 static void ctl_datamove_timer_wakeup(void *arg); 414 static void ctl_done_timer_wakeup(void *arg); 415 #endif /* CTL_IO_DELAY */ 416 417 static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 418 static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 419 static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 420 static void ctl_datamove_remote_write(union ctl_io *io); 421 static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 422 static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 423 static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 424 static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 425 ctl_ha_dt_cb callback); 426 static void ctl_datamove_remote_read(union ctl_io *io); 427 static void ctl_datamove_remote(union ctl_io *io); 428 static int ctl_process_done(union ctl_io *io, int have_lock); 429 static void ctl_work_thread(void *arg); 430 431 /* 432 * Load the serialization table. This isn't very pretty, but is probably 433 * the easiest way to do it. 434 */ 435 #include "ctl_ser_table.c" 436 437 /* 438 * We only need to define open, close and ioctl routines for this driver. 439 */ 440 static struct cdevsw ctl_cdevsw = { 441 .d_version = D_VERSION, 442 .d_flags = 0, 443 .d_open = ctl_open, 444 .d_close = ctl_close, 445 .d_ioctl = ctl_ioctl, 446 .d_name = "ctl", 447 }; 448 449 450 MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 451 452 static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 453 454 static moduledata_t ctl_moduledata = { 455 "ctl", 456 ctl_module_event_handler, 457 NULL 458 }; 459 460 DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 461 MODULE_VERSION(ctl, 1); 462 463 static void 464 ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 465 union ctl_ha_msg *msg_info) 466 { 467 struct ctl_scsiio *ctsio; 468 469 if (msg_info->hdr.original_sc == NULL) { 470 printf("%s: original_sc == NULL!\n", __func__); 471 /* XXX KDM now what? */ 472 return; 473 } 474 475 ctsio = &msg_info->hdr.original_sc->scsiio; 476 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 477 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 478 ctsio->io_hdr.status = msg_info->hdr.status; 479 ctsio->scsi_status = msg_info->scsi.scsi_status; 480 ctsio->sense_len = msg_info->scsi.sense_len; 481 ctsio->sense_residual = msg_info->scsi.sense_residual; 482 ctsio->residual = msg_info->scsi.residual; 483 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 484 sizeof(ctsio->sense_data)); 485 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 486 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 487 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 488 ctl_wakeup_thread(); 489 } 490 491 static void 492 ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 493 union ctl_ha_msg *msg_info) 494 { 495 struct ctl_scsiio *ctsio; 496 497 if (msg_info->hdr.serializing_sc == NULL) { 498 printf("%s: serializing_sc == NULL!\n", __func__); 499 /* XXX KDM now what? */ 500 return; 501 } 502 503 ctsio = &msg_info->hdr.serializing_sc->scsiio; 504 #if 0 505 /* 506 * Attempt to catch the situation where an I/O has 507 * been freed, and we're using it again. 508 */ 509 if (ctsio->io_hdr.io_type == 0xff) { 510 union ctl_io *tmp_io; 511 tmp_io = (union ctl_io *)ctsio; 512 printf("%s: %p use after free!\n", __func__, 513 ctsio); 514 printf("%s: type %d msg %d cdb %x iptl: " 515 "%d:%d:%d:%d tag 0x%04x " 516 "flag %#x status %x\n", 517 __func__, 518 tmp_io->io_hdr.io_type, 519 tmp_io->io_hdr.msg_type, 520 tmp_io->scsiio.cdb[0], 521 tmp_io->io_hdr.nexus.initid.id, 522 tmp_io->io_hdr.nexus.targ_port, 523 tmp_io->io_hdr.nexus.targ_target.id, 524 tmp_io->io_hdr.nexus.targ_lun, 525 (tmp_io->io_hdr.io_type == 526 CTL_IO_TASK) ? 527 tmp_io->taskio.tag_num : 528 tmp_io->scsiio.tag_num, 529 tmp_io->io_hdr.flags, 530 tmp_io->io_hdr.status); 531 } 532 #endif 533 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 534 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 535 ctl_wakeup_thread(); 536 } 537 538 /* 539 * ISC (Inter Shelf Communication) event handler. Events from the HA 540 * subsystem come in here. 541 */ 542 static void 543 ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 544 { 545 struct ctl_softc *ctl_softc; 546 union ctl_io *io; 547 struct ctl_prio *presio; 548 ctl_ha_status isc_status; 549 550 ctl_softc = control_softc; 551 io = NULL; 552 553 554 #if 0 555 printf("CTL: Isc Msg event %d\n", event); 556 #endif 557 if (event == CTL_HA_EVT_MSG_RECV) { 558 union ctl_ha_msg msg_info; 559 560 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 561 sizeof(msg_info), /*wait*/ 0); 562 #if 0 563 printf("CTL: msg_type %d\n", msg_info.msg_type); 564 #endif 565 if (isc_status != 0) { 566 printf("Error receiving message, status = %d\n", 567 isc_status); 568 return; 569 } 570 mtx_lock(&ctl_softc->ctl_lock); 571 572 switch (msg_info.hdr.msg_type) { 573 case CTL_MSG_SERIALIZE: 574 #if 0 575 printf("Serialize\n"); 576 #endif 577 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 578 if (io == NULL) { 579 printf("ctl_isc_event_handler: can't allocate " 580 "ctl_io!\n"); 581 /* Bad Juju */ 582 /* Need to set busy and send msg back */ 583 mtx_unlock(&ctl_softc->ctl_lock); 584 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 585 msg_info.hdr.status = CTL_SCSI_ERROR; 586 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 587 msg_info.scsi.sense_len = 0; 588 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 589 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 590 } 591 goto bailout; 592 } 593 ctl_zero_io(io); 594 // populate ctsio from msg_info 595 io->io_hdr.io_type = CTL_IO_SCSI; 596 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 597 io->io_hdr.original_sc = msg_info.hdr.original_sc; 598 #if 0 599 printf("pOrig %x\n", (int)msg_info.original_sc); 600 #endif 601 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 602 CTL_FLAG_IO_ACTIVE; 603 /* 604 * If we're in serialization-only mode, we don't 605 * want to go through full done processing. Thus 606 * the COPY flag. 607 * 608 * XXX KDM add another flag that is more specific. 609 */ 610 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 611 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 612 io->io_hdr.nexus = msg_info.hdr.nexus; 613 #if 0 614 printf("targ %d, port %d, iid %d, lun %d\n", 615 io->io_hdr.nexus.targ_target.id, 616 io->io_hdr.nexus.targ_port, 617 io->io_hdr.nexus.initid.id, 618 io->io_hdr.nexus.targ_lun); 619 #endif 620 io->scsiio.tag_num = msg_info.scsi.tag_num; 621 io->scsiio.tag_type = msg_info.scsi.tag_type; 622 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 623 CTL_MAX_CDBLEN); 624 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 625 struct ctl_cmd_entry *entry; 626 uint8_t opcode; 627 628 opcode = io->scsiio.cdb[0]; 629 entry = &ctl_cmd_table[opcode]; 630 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 631 io->io_hdr.flags |= 632 entry->flags & CTL_FLAG_DATA_MASK; 633 } 634 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 635 &io->io_hdr, links); 636 ctl_wakeup_thread(); 637 break; 638 639 /* Performed on the Originating SC, XFER mode only */ 640 case CTL_MSG_DATAMOVE: { 641 struct ctl_sg_entry *sgl; 642 int i, j; 643 644 io = msg_info.hdr.original_sc; 645 if (io == NULL) { 646 printf("%s: original_sc == NULL!\n", __func__); 647 /* XXX KDM do something here */ 648 break; 649 } 650 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 651 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 652 /* 653 * Keep track of this, we need to send it back over 654 * when the datamove is complete. 655 */ 656 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 657 658 if (msg_info.dt.sg_sequence == 0) { 659 /* 660 * XXX KDM we use the preallocated S/G list 661 * here, but we'll need to change this to 662 * dynamic allocation if we need larger S/G 663 * lists. 664 */ 665 if (msg_info.dt.kern_sg_entries > 666 sizeof(io->io_hdr.remote_sglist) / 667 sizeof(io->io_hdr.remote_sglist[0])) { 668 printf("%s: number of S/G entries " 669 "needed %u > allocated num %zd\n", 670 __func__, 671 msg_info.dt.kern_sg_entries, 672 sizeof(io->io_hdr.remote_sglist)/ 673 sizeof(io->io_hdr.remote_sglist[0])); 674 675 /* 676 * XXX KDM send a message back to 677 * the other side to shut down the 678 * DMA. The error will come back 679 * through via the normal channel. 680 */ 681 break; 682 } 683 sgl = io->io_hdr.remote_sglist; 684 memset(sgl, 0, 685 sizeof(io->io_hdr.remote_sglist)); 686 687 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 688 689 io->scsiio.kern_sg_entries = 690 msg_info.dt.kern_sg_entries; 691 io->scsiio.rem_sg_entries = 692 msg_info.dt.kern_sg_entries; 693 io->scsiio.kern_data_len = 694 msg_info.dt.kern_data_len; 695 io->scsiio.kern_total_len = 696 msg_info.dt.kern_total_len; 697 io->scsiio.kern_data_resid = 698 msg_info.dt.kern_data_resid; 699 io->scsiio.kern_rel_offset = 700 msg_info.dt.kern_rel_offset; 701 /* 702 * Clear out per-DMA flags. 703 */ 704 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 705 /* 706 * Add per-DMA flags that are set for this 707 * particular DMA request. 708 */ 709 io->io_hdr.flags |= msg_info.dt.flags & 710 CTL_FLAG_RDMA_MASK; 711 } else 712 sgl = (struct ctl_sg_entry *) 713 io->scsiio.kern_data_ptr; 714 715 for (i = msg_info.dt.sent_sg_entries, j = 0; 716 i < (msg_info.dt.sent_sg_entries + 717 msg_info.dt.cur_sg_entries); i++, j++) { 718 sgl[i].addr = msg_info.dt.sg_list[j].addr; 719 sgl[i].len = msg_info.dt.sg_list[j].len; 720 721 #if 0 722 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 723 __func__, 724 msg_info.dt.sg_list[j].addr, 725 msg_info.dt.sg_list[j].len, 726 sgl[i].addr, sgl[i].len, j, i); 727 #endif 728 } 729 #if 0 730 memcpy(&sgl[msg_info.dt.sent_sg_entries], 731 msg_info.dt.sg_list, 732 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 733 #endif 734 735 /* 736 * If this is the last piece of the I/O, we've got 737 * the full S/G list. Queue processing in the thread. 738 * Otherwise wait for the next piece. 739 */ 740 if (msg_info.dt.sg_last != 0) { 741 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 742 &io->io_hdr, links); 743 ctl_wakeup_thread(); 744 } 745 break; 746 } 747 /* Performed on the Serializing (primary) SC, XFER mode only */ 748 case CTL_MSG_DATAMOVE_DONE: { 749 if (msg_info.hdr.serializing_sc == NULL) { 750 printf("%s: serializing_sc == NULL!\n", 751 __func__); 752 /* XXX KDM now what? */ 753 break; 754 } 755 /* 756 * We grab the sense information here in case 757 * there was a failure, so we can return status 758 * back to the initiator. 759 */ 760 io = msg_info.hdr.serializing_sc; 761 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 762 io->io_hdr.status = msg_info.hdr.status; 763 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 764 io->scsiio.sense_len = msg_info.scsi.sense_len; 765 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 766 io->io_hdr.port_status = msg_info.scsi.fetd_status; 767 io->scsiio.residual = msg_info.scsi.residual; 768 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 769 sizeof(io->scsiio.sense_data)); 770 771 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 772 &io->io_hdr, links); 773 ctl_wakeup_thread(); 774 break; 775 } 776 777 /* Preformed on Originating SC, SER_ONLY mode */ 778 case CTL_MSG_R2R: 779 io = msg_info.hdr.original_sc; 780 if (io == NULL) { 781 printf("%s: Major Bummer\n", __func__); 782 mtx_unlock(&ctl_softc->ctl_lock); 783 return; 784 } else { 785 #if 0 786 printf("pOrig %x\n",(int) ctsio); 787 #endif 788 } 789 io->io_hdr.msg_type = CTL_MSG_R2R; 790 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 791 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 792 &io->io_hdr, links); 793 ctl_wakeup_thread(); 794 break; 795 796 /* 797 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 798 * mode. 799 * Performed on the Originating (i.e. secondary) SC in XFER 800 * mode 801 */ 802 case CTL_MSG_FINISH_IO: 803 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 804 ctl_isc_handler_finish_xfer(ctl_softc, 805 &msg_info); 806 else 807 ctl_isc_handler_finish_ser_only(ctl_softc, 808 &msg_info); 809 break; 810 811 /* Preformed on Originating SC */ 812 case CTL_MSG_BAD_JUJU: 813 io = msg_info.hdr.original_sc; 814 if (io == NULL) { 815 printf("%s: Bad JUJU!, original_sc is NULL!\n", 816 __func__); 817 break; 818 } 819 ctl_copy_sense_data(&msg_info, io); 820 /* 821 * IO should have already been cleaned up on other 822 * SC so clear this flag so we won't send a message 823 * back to finish the IO there. 824 */ 825 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 826 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 827 828 /* io = msg_info.hdr.serializing_sc; */ 829 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 830 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 831 &io->io_hdr, links); 832 ctl_wakeup_thread(); 833 break; 834 835 /* Handle resets sent from the other side */ 836 case CTL_MSG_MANAGE_TASKS: { 837 struct ctl_taskio *taskio; 838 taskio = (struct ctl_taskio *)ctl_alloc_io( 839 (void *)ctl_softc->othersc_pool); 840 if (taskio == NULL) { 841 printf("ctl_isc_event_handler: can't allocate " 842 "ctl_io!\n"); 843 /* Bad Juju */ 844 /* should I just call the proper reset func 845 here??? */ 846 mtx_unlock(&ctl_softc->ctl_lock); 847 goto bailout; 848 } 849 ctl_zero_io((union ctl_io *)taskio); 850 taskio->io_hdr.io_type = CTL_IO_TASK; 851 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 852 taskio->io_hdr.nexus = msg_info.hdr.nexus; 853 taskio->task_action = msg_info.task.task_action; 854 taskio->tag_num = msg_info.task.tag_num; 855 taskio->tag_type = msg_info.task.tag_type; 856 #ifdef CTL_TIME_IO 857 taskio->io_hdr.start_time = time_uptime; 858 getbintime(&taskio->io_hdr.start_bt); 859 #if 0 860 cs_prof_gettime(&taskio->io_hdr.start_ticks); 861 #endif 862 #endif /* CTL_TIME_IO */ 863 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 864 &taskio->io_hdr, links); 865 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 866 ctl_wakeup_thread(); 867 break; 868 } 869 /* Persistent Reserve action which needs attention */ 870 case CTL_MSG_PERS_ACTION: 871 presio = (struct ctl_prio *)ctl_alloc_io( 872 (void *)ctl_softc->othersc_pool); 873 if (presio == NULL) { 874 printf("ctl_isc_event_handler: can't allocate " 875 "ctl_io!\n"); 876 /* Bad Juju */ 877 /* Need to set busy and send msg back */ 878 mtx_unlock(&ctl_softc->ctl_lock); 879 goto bailout; 880 } 881 ctl_zero_io((union ctl_io *)presio); 882 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 883 presio->pr_msg = msg_info.pr; 884 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 885 &presio->io_hdr, links); 886 ctl_wakeup_thread(); 887 break; 888 case CTL_MSG_SYNC_FE: 889 rcv_sync_msg = 1; 890 break; 891 case CTL_MSG_APS_LOCK: { 892 // It's quicker to execute this then to 893 // queue it. 894 struct ctl_lun *lun; 895 struct ctl_page_index *page_index; 896 struct copan_aps_subpage *current_sp; 897 uint32_t targ_lun; 898 899 targ_lun = msg_info.hdr.nexus.targ_lun; 900 if (msg_info.hdr.nexus.lun_map_fn != NULL) 901 targ_lun = msg_info.hdr.nexus.lun_map_fn(msg_info.hdr.nexus.lun_map_arg, targ_lun); 902 903 lun = ctl_softc->ctl_luns[targ_lun]; 904 page_index = &lun->mode_pages.index[index_to_aps_page]; 905 current_sp = (struct copan_aps_subpage *) 906 (page_index->page_data + 907 (page_index->page_len * CTL_PAGE_CURRENT)); 908 909 current_sp->lock_active = msg_info.aps.lock_flag; 910 break; 911 } 912 default: 913 printf("How did I get here?\n"); 914 } 915 mtx_unlock(&ctl_softc->ctl_lock); 916 } else if (event == CTL_HA_EVT_MSG_SENT) { 917 if (param != CTL_HA_STATUS_SUCCESS) { 918 printf("Bad status from ctl_ha_msg_send status %d\n", 919 param); 920 } 921 return; 922 } else if (event == CTL_HA_EVT_DISCONNECT) { 923 printf("CTL: Got a disconnect from Isc\n"); 924 return; 925 } else { 926 printf("ctl_isc_event_handler: Unknown event %d\n", event); 927 return; 928 } 929 930 bailout: 931 return; 932 } 933 934 static void 935 ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 936 { 937 struct scsi_sense_data *sense; 938 939 sense = &dest->scsiio.sense_data; 940 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 941 dest->scsiio.scsi_status = src->scsi.scsi_status; 942 dest->scsiio.sense_len = src->scsi.sense_len; 943 dest->io_hdr.status = src->hdr.status; 944 } 945 946 static int 947 ctl_init(void) 948 { 949 struct ctl_softc *softc; 950 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 951 struct ctl_frontend *fe; 952 struct ctl_lun *lun; 953 uint8_t sc_id =0; 954 #if 0 955 int i; 956 #endif 957 int error, retval; 958 //int isc_retval; 959 960 retval = 0; 961 ctl_pause_rtr = 0; 962 rcv_sync_msg = 0; 963 964 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 965 M_WAITOK | M_ZERO); 966 softc = control_softc; 967 968 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 969 "cam/ctl"); 970 971 softc->dev->si_drv1 = softc; 972 973 /* 974 * By default, return a "bad LUN" peripheral qualifier for unknown 975 * LUNs. The user can override this default using the tunable or 976 * sysctl. See the comment in ctl_inquiry_std() for more details. 977 */ 978 softc->inquiry_pq_no_lun = 1; 979 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 980 &softc->inquiry_pq_no_lun); 981 sysctl_ctx_init(&softc->sysctl_ctx); 982 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 983 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 984 CTLFLAG_RD, 0, "CAM Target Layer"); 985 986 if (softc->sysctl_tree == NULL) { 987 printf("%s: unable to allocate sysctl tree\n", __func__); 988 destroy_dev(softc->dev); 989 free(control_softc, M_DEVBUF); 990 control_softc = NULL; 991 return (ENOMEM); 992 } 993 994 SYSCTL_ADD_INT(&softc->sysctl_ctx, 995 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 996 "inquiry_pq_no_lun", CTLFLAG_RW, 997 &softc->inquiry_pq_no_lun, 0, 998 "Report no lun possible for invalid LUNs"); 999 1000 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 1001 softc->open_count = 0; 1002 1003 /* 1004 * Default to actually sending a SYNCHRONIZE CACHE command down to 1005 * the drive. 1006 */ 1007 softc->flags = CTL_FLAG_REAL_SYNC; 1008 1009 /* 1010 * In Copan's HA scheme, the "master" and "slave" roles are 1011 * figured out through the slot the controller is in. Although it 1012 * is an active/active system, someone has to be in charge. 1013 */ 1014 #ifdef NEEDTOPORT 1015 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1016 #endif 1017 1018 if (sc_id == 0) { 1019 softc->flags |= CTL_FLAG_MASTER_SHELF; 1020 persis_offset = 0; 1021 } else 1022 persis_offset = CTL_MAX_INITIATORS; 1023 1024 /* 1025 * XXX KDM need to figure out where we want to get our target ID 1026 * and WWID. Is it different on each port? 1027 */ 1028 softc->target.id = 0; 1029 softc->target.wwid[0] = 0x12345678; 1030 softc->target.wwid[1] = 0x87654321; 1031 STAILQ_INIT(&softc->lun_list); 1032 STAILQ_INIT(&softc->pending_lun_queue); 1033 STAILQ_INIT(&softc->task_queue); 1034 STAILQ_INIT(&softc->incoming_queue); 1035 STAILQ_INIT(&softc->rtr_queue); 1036 STAILQ_INIT(&softc->done_queue); 1037 STAILQ_INIT(&softc->isc_queue); 1038 STAILQ_INIT(&softc->fe_list); 1039 STAILQ_INIT(&softc->be_list); 1040 STAILQ_INIT(&softc->io_pools); 1041 1042 lun = &softc->lun; 1043 1044 /* 1045 * We don't bother calling these with ctl_lock held here, because, 1046 * in theory, no one else can try to do anything while we're in our 1047 * module init routine. 1048 */ 1049 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1050 &internal_pool)!= 0){ 1051 printf("ctl: can't allocate %d entry internal pool, " 1052 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1053 return (ENOMEM); 1054 } 1055 1056 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1057 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1058 printf("ctl: can't allocate %d entry emergency pool, " 1059 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1060 ctl_pool_free(softc, internal_pool); 1061 return (ENOMEM); 1062 } 1063 1064 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1065 &other_pool) != 0) 1066 { 1067 printf("ctl: can't allocate %d entry other SC pool, " 1068 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1069 ctl_pool_free(softc, internal_pool); 1070 ctl_pool_free(softc, emergency_pool); 1071 return (ENOMEM); 1072 } 1073 1074 softc->internal_pool = internal_pool; 1075 softc->emergency_pool = emergency_pool; 1076 softc->othersc_pool = other_pool; 1077 1078 mtx_lock(&softc->ctl_lock); 1079 ctl_pool_acquire(internal_pool); 1080 ctl_pool_acquire(emergency_pool); 1081 ctl_pool_acquire(other_pool); 1082 mtx_unlock(&softc->ctl_lock); 1083 1084 /* 1085 * We used to allocate a processor LUN here. The new scheme is to 1086 * just let the user allocate LUNs as he sees fit. 1087 */ 1088 #if 0 1089 mtx_lock(&softc->ctl_lock); 1090 ctl_alloc_lun(softc, lun, /*be_lun*/NULL, /*target*/softc->target); 1091 mtx_unlock(&softc->ctl_lock); 1092 #endif 1093 1094 error = kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0, 1095 "ctl_thrd"); 1096 if (error != 0) { 1097 printf("error creating CTL work thread!\n"); 1098 mtx_lock(&softc->ctl_lock); 1099 ctl_free_lun(lun); 1100 ctl_pool_free(softc, internal_pool); 1101 ctl_pool_free(softc, emergency_pool); 1102 ctl_pool_free(softc, other_pool); 1103 mtx_unlock(&softc->ctl_lock); 1104 return (error); 1105 } 1106 if (bootverbose) 1107 printf("ctl: CAM Target Layer loaded\n"); 1108 1109 /* 1110 * Initialize the initiator and portname mappings 1111 */ 1112 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1113 1114 /* 1115 * Initialize the ioctl front end. 1116 */ 1117 fe = &softc->ioctl_info.fe; 1118 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1119 fe->port_type = CTL_PORT_IOCTL; 1120 fe->num_requested_ctl_io = 100; 1121 fe->port_name = softc->ioctl_info.port_name; 1122 fe->port_online = ctl_ioctl_online; 1123 fe->port_offline = ctl_ioctl_offline; 1124 fe->onoff_arg = &softc->ioctl_info; 1125 fe->targ_enable = ctl_ioctl_targ_enable; 1126 fe->targ_disable = ctl_ioctl_targ_disable; 1127 fe->lun_enable = ctl_ioctl_lun_enable; 1128 fe->lun_disable = ctl_ioctl_lun_disable; 1129 fe->targ_lun_arg = &softc->ioctl_info; 1130 fe->fe_datamove = ctl_ioctl_datamove; 1131 fe->fe_done = ctl_ioctl_done; 1132 fe->max_targets = 15; 1133 fe->max_target_id = 15; 1134 1135 if (ctl_frontend_register(&softc->ioctl_info.fe, 1136 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1137 printf("ctl: ioctl front end registration failed, will " 1138 "continue anyway\n"); 1139 } 1140 1141 #ifdef CTL_IO_DELAY 1142 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1143 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1144 sizeof(struct callout), CTL_TIMER_BYTES); 1145 return (EINVAL); 1146 } 1147 #endif /* CTL_IO_DELAY */ 1148 1149 return (0); 1150 } 1151 1152 void 1153 ctl_shutdown(void) 1154 { 1155 struct ctl_softc *softc; 1156 struct ctl_lun *lun, *next_lun; 1157 struct ctl_io_pool *pool, *next_pool; 1158 1159 softc = (struct ctl_softc *)control_softc; 1160 1161 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1162 printf("ctl: ioctl front end deregistration failed\n"); 1163 1164 mtx_lock(&softc->ctl_lock); 1165 1166 /* 1167 * Free up each LUN. 1168 */ 1169 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1170 next_lun = STAILQ_NEXT(lun, links); 1171 ctl_free_lun(lun); 1172 } 1173 1174 /* 1175 * This will rip the rug out from under any FETDs or anyone else 1176 * that has a pool allocated. Since we increment our module 1177 * refcount any time someone outside the main CTL module allocates 1178 * a pool, we shouldn't have any problems here. The user won't be 1179 * able to unload the CTL module until client modules have 1180 * successfully unloaded. 1181 */ 1182 for (pool = STAILQ_FIRST(&softc->io_pools); pool != NULL; 1183 pool = next_pool) { 1184 next_pool = STAILQ_NEXT(pool, links); 1185 ctl_pool_free(softc, pool); 1186 } 1187 1188 mtx_unlock(&softc->ctl_lock); 1189 1190 #if 0 1191 ctl_shutdown_thread(softc->work_thread); 1192 #endif 1193 1194 mtx_destroy(&softc->ctl_lock); 1195 1196 destroy_dev(softc->dev); 1197 1198 sysctl_ctx_free(&softc->sysctl_ctx); 1199 1200 free(control_softc, M_DEVBUF); 1201 control_softc = NULL; 1202 1203 if (bootverbose) 1204 printf("ctl: CAM Target Layer unloaded\n"); 1205 } 1206 1207 static int 1208 ctl_module_event_handler(module_t mod, int what, void *arg) 1209 { 1210 1211 switch (what) { 1212 case MOD_LOAD: 1213 return (ctl_init()); 1214 case MOD_UNLOAD: 1215 return (EBUSY); 1216 default: 1217 return (EOPNOTSUPP); 1218 } 1219 } 1220 1221 /* 1222 * XXX KDM should we do some access checks here? Bump a reference count to 1223 * prevent a CTL module from being unloaded while someone has it open? 1224 */ 1225 static int 1226 ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1227 { 1228 return (0); 1229 } 1230 1231 static int 1232 ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1233 { 1234 return (0); 1235 } 1236 1237 int 1238 ctl_port_enable(ctl_port_type port_type) 1239 { 1240 struct ctl_softc *softc; 1241 struct ctl_frontend *fe; 1242 1243 if (ctl_is_single == 0) { 1244 union ctl_ha_msg msg_info; 1245 int isc_retval; 1246 1247 #if 0 1248 printf("%s: HA mode, synchronizing frontend enable\n", 1249 __func__); 1250 #endif 1251 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1252 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1253 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1254 printf("Sync msg send error retval %d\n", isc_retval); 1255 } 1256 if (!rcv_sync_msg) { 1257 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1258 sizeof(msg_info), 1); 1259 } 1260 #if 0 1261 printf("CTL:Frontend Enable\n"); 1262 } else { 1263 printf("%s: single mode, skipping frontend synchronization\n", 1264 __func__); 1265 #endif 1266 } 1267 1268 softc = control_softc; 1269 1270 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1271 if (port_type & fe->port_type) 1272 { 1273 #if 0 1274 printf("port %d\n", fe->targ_port); 1275 #endif 1276 ctl_frontend_online(fe); 1277 } 1278 } 1279 1280 return (0); 1281 } 1282 1283 int 1284 ctl_port_disable(ctl_port_type port_type) 1285 { 1286 struct ctl_softc *softc; 1287 struct ctl_frontend *fe; 1288 1289 softc = control_softc; 1290 1291 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1292 if (port_type & fe->port_type) 1293 ctl_frontend_offline(fe); 1294 } 1295 1296 return (0); 1297 } 1298 1299 /* 1300 * Returns 0 for success, 1 for failure. 1301 * Currently the only failure mode is if there aren't enough entries 1302 * allocated. So, in case of a failure, look at num_entries_dropped, 1303 * reallocate and try again. 1304 */ 1305 int 1306 ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1307 int *num_entries_filled, int *num_entries_dropped, 1308 ctl_port_type port_type, int no_virtual) 1309 { 1310 struct ctl_softc *softc; 1311 struct ctl_frontend *fe; 1312 int entries_dropped, entries_filled; 1313 int retval; 1314 int i; 1315 1316 softc = control_softc; 1317 1318 retval = 0; 1319 entries_filled = 0; 1320 entries_dropped = 0; 1321 1322 i = 0; 1323 mtx_lock(&softc->ctl_lock); 1324 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1325 struct ctl_port_entry *entry; 1326 1327 if ((fe->port_type & port_type) == 0) 1328 continue; 1329 1330 if ((no_virtual != 0) 1331 && (fe->virtual_port != 0)) 1332 continue; 1333 1334 if (entries_filled >= num_entries_alloced) { 1335 entries_dropped++; 1336 continue; 1337 } 1338 entry = &entries[i]; 1339 1340 entry->port_type = fe->port_type; 1341 strlcpy(entry->port_name, fe->port_name, 1342 sizeof(entry->port_name)); 1343 entry->physical_port = fe->physical_port; 1344 entry->virtual_port = fe->virtual_port; 1345 entry->wwnn = fe->wwnn; 1346 entry->wwpn = fe->wwpn; 1347 1348 i++; 1349 entries_filled++; 1350 } 1351 1352 mtx_unlock(&softc->ctl_lock); 1353 1354 if (entries_dropped > 0) 1355 retval = 1; 1356 1357 *num_entries_dropped = entries_dropped; 1358 *num_entries_filled = entries_filled; 1359 1360 return (retval); 1361 } 1362 1363 static void 1364 ctl_ioctl_online(void *arg) 1365 { 1366 struct ctl_ioctl_info *ioctl_info; 1367 1368 ioctl_info = (struct ctl_ioctl_info *)arg; 1369 1370 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1371 } 1372 1373 static void 1374 ctl_ioctl_offline(void *arg) 1375 { 1376 struct ctl_ioctl_info *ioctl_info; 1377 1378 ioctl_info = (struct ctl_ioctl_info *)arg; 1379 1380 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1381 } 1382 1383 /* 1384 * Remove an initiator by port number and initiator ID. 1385 * Returns 0 for success, 1 for failure. 1386 */ 1387 int 1388 ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1389 { 1390 struct ctl_softc *softc; 1391 1392 softc = control_softc; 1393 1394 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1395 1396 if ((targ_port < 0) 1397 || (targ_port > CTL_MAX_PORTS)) { 1398 printf("%s: invalid port number %d\n", __func__, targ_port); 1399 return (1); 1400 } 1401 if (iid > CTL_MAX_INIT_PER_PORT) { 1402 printf("%s: initiator ID %u > maximun %u!\n", 1403 __func__, iid, CTL_MAX_INIT_PER_PORT); 1404 return (1); 1405 } 1406 1407 mtx_lock(&softc->ctl_lock); 1408 1409 softc->wwpn_iid[targ_port][iid].in_use = 0; 1410 1411 mtx_unlock(&softc->ctl_lock); 1412 1413 return (0); 1414 } 1415 1416 /* 1417 * Add an initiator to the initiator map. 1418 * Returns 0 for success, 1 for failure. 1419 */ 1420 int 1421 ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1422 { 1423 struct ctl_softc *softc; 1424 int retval; 1425 1426 softc = control_softc; 1427 1428 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1429 1430 retval = 0; 1431 1432 if ((targ_port < 0) 1433 || (targ_port > CTL_MAX_PORTS)) { 1434 printf("%s: invalid port number %d\n", __func__, targ_port); 1435 return (1); 1436 } 1437 if (iid > CTL_MAX_INIT_PER_PORT) { 1438 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1439 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1440 return (1); 1441 } 1442 1443 mtx_lock(&softc->ctl_lock); 1444 1445 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1446 /* 1447 * We don't treat this as an error. 1448 */ 1449 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1450 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1451 __func__, targ_port, iid, (uintmax_t)wwpn); 1452 goto bailout; 1453 } 1454 1455 /* 1456 * This is an error, but what do we do about it? The 1457 * driver is telling us we have a new WWPN for this 1458 * initiator ID, so we pretty much need to use it. 1459 */ 1460 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1461 "still at that address\n", __func__, targ_port, iid, 1462 (uintmax_t)wwpn, 1463 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1464 1465 /* 1466 * XXX KDM clear have_ca and ua_pending on each LUN for 1467 * this initiator. 1468 */ 1469 } 1470 softc->wwpn_iid[targ_port][iid].in_use = 1; 1471 softc->wwpn_iid[targ_port][iid].iid = iid; 1472 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1473 softc->wwpn_iid[targ_port][iid].port = targ_port; 1474 1475 bailout: 1476 1477 mtx_unlock(&softc->ctl_lock); 1478 1479 return (retval); 1480 } 1481 1482 /* 1483 * XXX KDM should we pretend to do something in the target/lun 1484 * enable/disable functions? 1485 */ 1486 static int 1487 ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1488 { 1489 return (0); 1490 } 1491 1492 static int 1493 ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1494 { 1495 return (0); 1496 } 1497 1498 static int 1499 ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1500 { 1501 return (0); 1502 } 1503 1504 static int 1505 ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1506 { 1507 return (0); 1508 } 1509 1510 /* 1511 * Data movement routine for the CTL ioctl frontend port. 1512 */ 1513 static int 1514 ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1515 { 1516 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1517 struct ctl_sg_entry ext_entry, kern_entry; 1518 int ext_sglen, ext_sg_entries, kern_sg_entries; 1519 int ext_sg_start, ext_offset; 1520 int len_to_copy, len_copied; 1521 int kern_watermark, ext_watermark; 1522 int ext_sglist_malloced; 1523 int i, j; 1524 1525 ext_sglist_malloced = 0; 1526 ext_sg_start = 0; 1527 ext_offset = 0; 1528 1529 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1530 1531 /* 1532 * If this flag is set, fake the data transfer. 1533 */ 1534 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1535 ctsio->ext_data_filled = ctsio->ext_data_len; 1536 goto bailout; 1537 } 1538 1539 /* 1540 * To simplify things here, if we have a single buffer, stick it in 1541 * a S/G entry and just make it a single entry S/G list. 1542 */ 1543 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1544 int len_seen; 1545 1546 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1547 1548 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1549 M_WAITOK); 1550 ext_sglist_malloced = 1; 1551 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1552 ext_sglen) != 0) { 1553 ctl_set_internal_failure(ctsio, 1554 /*sks_valid*/ 0, 1555 /*retry_count*/ 0); 1556 goto bailout; 1557 } 1558 ext_sg_entries = ctsio->ext_sg_entries; 1559 len_seen = 0; 1560 for (i = 0; i < ext_sg_entries; i++) { 1561 if ((len_seen + ext_sglist[i].len) >= 1562 ctsio->ext_data_filled) { 1563 ext_sg_start = i; 1564 ext_offset = ctsio->ext_data_filled - len_seen; 1565 break; 1566 } 1567 len_seen += ext_sglist[i].len; 1568 } 1569 } else { 1570 ext_sglist = &ext_entry; 1571 ext_sglist->addr = ctsio->ext_data_ptr; 1572 ext_sglist->len = ctsio->ext_data_len; 1573 ext_sg_entries = 1; 1574 ext_sg_start = 0; 1575 ext_offset = ctsio->ext_data_filled; 1576 } 1577 1578 if (ctsio->kern_sg_entries > 0) { 1579 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1580 kern_sg_entries = ctsio->kern_sg_entries; 1581 } else { 1582 kern_sglist = &kern_entry; 1583 kern_sglist->addr = ctsio->kern_data_ptr; 1584 kern_sglist->len = ctsio->kern_data_len; 1585 kern_sg_entries = 1; 1586 } 1587 1588 1589 kern_watermark = 0; 1590 ext_watermark = ext_offset; 1591 len_copied = 0; 1592 for (i = ext_sg_start, j = 0; 1593 i < ext_sg_entries && j < kern_sg_entries;) { 1594 uint8_t *ext_ptr, *kern_ptr; 1595 1596 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1597 kern_sglist[j].len - kern_watermark); 1598 1599 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1600 ext_ptr = ext_ptr + ext_watermark; 1601 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1602 /* 1603 * XXX KDM fix this! 1604 */ 1605 panic("need to implement bus address support"); 1606 #if 0 1607 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1608 #endif 1609 } else 1610 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1611 kern_ptr = kern_ptr + kern_watermark; 1612 1613 kern_watermark += len_to_copy; 1614 ext_watermark += len_to_copy; 1615 1616 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1617 CTL_FLAG_DATA_IN) { 1618 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1619 "bytes to user\n", len_to_copy)); 1620 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1621 "to %p\n", kern_ptr, ext_ptr)); 1622 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1623 ctl_set_internal_failure(ctsio, 1624 /*sks_valid*/ 0, 1625 /*retry_count*/ 0); 1626 goto bailout; 1627 } 1628 } else { 1629 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1630 "bytes from user\n", len_to_copy)); 1631 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1632 "to %p\n", ext_ptr, kern_ptr)); 1633 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1634 ctl_set_internal_failure(ctsio, 1635 /*sks_valid*/ 0, 1636 /*retry_count*/0); 1637 goto bailout; 1638 } 1639 } 1640 1641 len_copied += len_to_copy; 1642 1643 if (ext_sglist[i].len == ext_watermark) { 1644 i++; 1645 ext_watermark = 0; 1646 } 1647 1648 if (kern_sglist[j].len == kern_watermark) { 1649 j++; 1650 kern_watermark = 0; 1651 } 1652 } 1653 1654 ctsio->ext_data_filled += len_copied; 1655 1656 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1657 "kern_sg_entries: %d\n", ext_sg_entries, 1658 kern_sg_entries)); 1659 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1660 "kern_data_len = %d\n", ctsio->ext_data_len, 1661 ctsio->kern_data_len)); 1662 1663 1664 /* XXX KDM set residual?? */ 1665 bailout: 1666 1667 if (ext_sglist_malloced != 0) 1668 free(ext_sglist, M_CTL); 1669 1670 return (CTL_RETVAL_COMPLETE); 1671 } 1672 1673 /* 1674 * Serialize a command that went down the "wrong" side, and so was sent to 1675 * this controller for execution. The logic is a little different than the 1676 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1677 * sent back to the other side, but in the success case, we execute the 1678 * command on this side (XFER mode) or tell the other side to execute it 1679 * (SER_ONLY mode). 1680 */ 1681 static int 1682 ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1683 { 1684 struct ctl_softc *ctl_softc; 1685 union ctl_ha_msg msg_info; 1686 struct ctl_lun *lun; 1687 int retval = 0; 1688 uint32_t targ_lun; 1689 1690 ctl_softc = control_softc; 1691 if (have_lock == 0) 1692 mtx_lock(&ctl_softc->ctl_lock); 1693 1694 targ_lun = ctsio->io_hdr.nexus.targ_lun; 1695 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 1696 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 1697 lun = ctl_softc->ctl_luns[targ_lun]; 1698 if (lun==NULL) 1699 { 1700 /* 1701 * Why isn't LUN defined? The other side wouldn't 1702 * send a cmd if the LUN is undefined. 1703 */ 1704 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1705 1706 /* "Logical unit not supported" */ 1707 ctl_set_sense_data(&msg_info.scsi.sense_data, 1708 lun, 1709 /*sense_format*/SSD_TYPE_NONE, 1710 /*current_error*/ 1, 1711 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1712 /*asc*/ 0x25, 1713 /*ascq*/ 0x00, 1714 SSD_ELEM_NONE); 1715 1716 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1717 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1718 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1719 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1720 msg_info.hdr.serializing_sc = NULL; 1721 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1722 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1723 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1724 } 1725 if (have_lock == 0) 1726 mtx_unlock(&ctl_softc->ctl_lock); 1727 return(1); 1728 1729 } 1730 1731 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1732 1733 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1734 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1735 ooa_links))) { 1736 case CTL_ACTION_BLOCK: 1737 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1738 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1739 blocked_links); 1740 break; 1741 case CTL_ACTION_PASS: 1742 case CTL_ACTION_SKIP: 1743 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1744 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1745 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1746 &ctsio->io_hdr, links); 1747 } else { 1748 1749 /* send msg back to other side */ 1750 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1751 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1752 msg_info.hdr.msg_type = CTL_MSG_R2R; 1753 #if 0 1754 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1755 #endif 1756 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1757 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1758 } 1759 } 1760 break; 1761 case CTL_ACTION_OVERLAP: 1762 /* OVERLAPPED COMMANDS ATTEMPTED */ 1763 ctl_set_sense_data(&msg_info.scsi.sense_data, 1764 lun, 1765 /*sense_format*/SSD_TYPE_NONE, 1766 /*current_error*/ 1, 1767 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1768 /*asc*/ 0x4E, 1769 /*ascq*/ 0x00, 1770 SSD_ELEM_NONE); 1771 1772 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1773 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1774 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1775 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1776 msg_info.hdr.serializing_sc = NULL; 1777 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1778 #if 0 1779 printf("BAD JUJU:Major Bummer Overlap\n"); 1780 #endif 1781 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1782 retval = 1; 1783 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1784 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1785 } 1786 break; 1787 case CTL_ACTION_OVERLAP_TAG: 1788 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1789 ctl_set_sense_data(&msg_info.scsi.sense_data, 1790 lun, 1791 /*sense_format*/SSD_TYPE_NONE, 1792 /*current_error*/ 1, 1793 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1794 /*asc*/ 0x4D, 1795 /*ascq*/ ctsio->tag_num & 0xff, 1796 SSD_ELEM_NONE); 1797 1798 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1799 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1800 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1801 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1802 msg_info.hdr.serializing_sc = NULL; 1803 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1804 #if 0 1805 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1806 #endif 1807 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1808 retval = 1; 1809 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1810 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1811 } 1812 break; 1813 case CTL_ACTION_ERROR: 1814 default: 1815 /* "Internal target failure" */ 1816 ctl_set_sense_data(&msg_info.scsi.sense_data, 1817 lun, 1818 /*sense_format*/SSD_TYPE_NONE, 1819 /*current_error*/ 1, 1820 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1821 /*asc*/ 0x44, 1822 /*ascq*/ 0x00, 1823 SSD_ELEM_NONE); 1824 1825 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1826 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1827 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1828 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1829 msg_info.hdr.serializing_sc = NULL; 1830 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1831 #if 0 1832 printf("BAD JUJU:Major Bummer HW Error\n"); 1833 #endif 1834 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1835 retval = 1; 1836 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1837 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1838 } 1839 break; 1840 } 1841 if (have_lock == 0) 1842 mtx_unlock(&ctl_softc->ctl_lock); 1843 return (retval); 1844 } 1845 1846 static int 1847 ctl_ioctl_submit_wait(union ctl_io *io) 1848 { 1849 struct ctl_fe_ioctl_params params; 1850 ctl_fe_ioctl_state last_state; 1851 int done, retval; 1852 1853 retval = 0; 1854 1855 bzero(¶ms, sizeof(params)); 1856 1857 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1858 cv_init(¶ms.sem, "ctlioccv"); 1859 params.state = CTL_IOCTL_INPROG; 1860 last_state = params.state; 1861 1862 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1863 1864 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1865 1866 /* This shouldn't happen */ 1867 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1868 return (retval); 1869 1870 done = 0; 1871 1872 do { 1873 mtx_lock(¶ms.ioctl_mtx); 1874 /* 1875 * Check the state here, and don't sleep if the state has 1876 * already changed (i.e. wakeup has already occured, but we 1877 * weren't waiting yet). 1878 */ 1879 if (params.state == last_state) { 1880 /* XXX KDM cv_wait_sig instead? */ 1881 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1882 } 1883 last_state = params.state; 1884 1885 switch (params.state) { 1886 case CTL_IOCTL_INPROG: 1887 /* Why did we wake up? */ 1888 /* XXX KDM error here? */ 1889 mtx_unlock(¶ms.ioctl_mtx); 1890 break; 1891 case CTL_IOCTL_DATAMOVE: 1892 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1893 1894 /* 1895 * change last_state back to INPROG to avoid 1896 * deadlock on subsequent data moves. 1897 */ 1898 params.state = last_state = CTL_IOCTL_INPROG; 1899 1900 mtx_unlock(¶ms.ioctl_mtx); 1901 ctl_ioctl_do_datamove(&io->scsiio); 1902 /* 1903 * Note that in some cases, most notably writes, 1904 * this will queue the I/O and call us back later. 1905 * In other cases, generally reads, this routine 1906 * will immediately call back and wake us up, 1907 * probably using our own context. 1908 */ 1909 io->scsiio.be_move_done(io); 1910 break; 1911 case CTL_IOCTL_DONE: 1912 mtx_unlock(¶ms.ioctl_mtx); 1913 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1914 done = 1; 1915 break; 1916 default: 1917 mtx_unlock(¶ms.ioctl_mtx); 1918 /* XXX KDM error here? */ 1919 break; 1920 } 1921 } while (done == 0); 1922 1923 mtx_destroy(¶ms.ioctl_mtx); 1924 cv_destroy(¶ms.sem); 1925 1926 return (CTL_RETVAL_COMPLETE); 1927 } 1928 1929 static void 1930 ctl_ioctl_datamove(union ctl_io *io) 1931 { 1932 struct ctl_fe_ioctl_params *params; 1933 1934 params = (struct ctl_fe_ioctl_params *) 1935 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1936 1937 mtx_lock(¶ms->ioctl_mtx); 1938 params->state = CTL_IOCTL_DATAMOVE; 1939 cv_broadcast(¶ms->sem); 1940 mtx_unlock(¶ms->ioctl_mtx); 1941 } 1942 1943 static void 1944 ctl_ioctl_done(union ctl_io *io) 1945 { 1946 struct ctl_fe_ioctl_params *params; 1947 1948 params = (struct ctl_fe_ioctl_params *) 1949 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1950 1951 mtx_lock(¶ms->ioctl_mtx); 1952 params->state = CTL_IOCTL_DONE; 1953 cv_broadcast(¶ms->sem); 1954 mtx_unlock(¶ms->ioctl_mtx); 1955 } 1956 1957 static void 1958 ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1959 { 1960 struct ctl_fe_ioctl_startstop_info *sd_info; 1961 1962 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1963 1964 sd_info->hs_info.status = metatask->status; 1965 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1966 sd_info->hs_info.luns_complete = 1967 metatask->taskinfo.startstop.luns_complete; 1968 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1969 1970 cv_broadcast(&sd_info->sem); 1971 } 1972 1973 static void 1974 ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1975 { 1976 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1977 1978 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1979 1980 mtx_lock(fe_bbr_info->lock); 1981 fe_bbr_info->bbr_info->status = metatask->status; 1982 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1983 fe_bbr_info->wakeup_done = 1; 1984 mtx_unlock(fe_bbr_info->lock); 1985 1986 cv_broadcast(&fe_bbr_info->sem); 1987 } 1988 1989 /* 1990 * Returns 0 for success, errno for failure. 1991 */ 1992 static int 1993 ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1994 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1995 { 1996 union ctl_io *io; 1997 int retval; 1998 1999 retval = 0; 2000 2001 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 2002 2003 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 2004 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2005 ooa_links)) { 2006 struct ctl_ooa_entry *entry; 2007 2008 /* 2009 * If we've got more than we can fit, just count the 2010 * remaining entries. 2011 */ 2012 if (*cur_fill_num >= ooa_hdr->alloc_num) 2013 continue; 2014 2015 entry = &kern_entries[*cur_fill_num]; 2016 2017 entry->tag_num = io->scsiio.tag_num; 2018 entry->lun_num = lun->lun; 2019 #ifdef CTL_TIME_IO 2020 entry->start_bt = io->io_hdr.start_bt; 2021 #endif 2022 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 2023 entry->cdb_len = io->scsiio.cdb_len; 2024 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2025 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2026 2027 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2028 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 2029 2030 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2031 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2032 2033 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2034 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 2035 2036 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2037 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2038 } 2039 2040 return (retval); 2041 } 2042 2043 static void * 2044 ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2045 size_t error_str_len) 2046 { 2047 void *kptr; 2048 2049 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2050 2051 if (copyin(user_addr, kptr, len) != 0) { 2052 snprintf(error_str, error_str_len, "Error copying %d bytes " 2053 "from user address %p to kernel address %p", len, 2054 user_addr, kptr); 2055 free(kptr, M_CTL); 2056 return (NULL); 2057 } 2058 2059 return (kptr); 2060 } 2061 2062 static void 2063 ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2064 { 2065 int i; 2066 2067 if (be_args == NULL) 2068 return; 2069 2070 for (i = 0; i < num_be_args; i++) { 2071 free(be_args[i].kname, M_CTL); 2072 free(be_args[i].kvalue, M_CTL); 2073 } 2074 2075 free(be_args, M_CTL); 2076 } 2077 2078 static struct ctl_be_arg * 2079 ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2080 char *error_str, size_t error_str_len) 2081 { 2082 struct ctl_be_arg *args; 2083 int i; 2084 2085 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2086 error_str, error_str_len); 2087 2088 if (args == NULL) 2089 goto bailout; 2090 2091 for (i = 0; i < num_be_args; i++) { 2092 args[i].kname = NULL; 2093 args[i].kvalue = NULL; 2094 } 2095 2096 for (i = 0; i < num_be_args; i++) { 2097 uint8_t *tmpptr; 2098 2099 args[i].kname = ctl_copyin_alloc(args[i].name, 2100 args[i].namelen, error_str, error_str_len); 2101 if (args[i].kname == NULL) 2102 goto bailout; 2103 2104 if (args[i].kname[args[i].namelen - 1] != '\0') { 2105 snprintf(error_str, error_str_len, "Argument %d " 2106 "name is not NUL-terminated", i); 2107 goto bailout; 2108 } 2109 2110 args[i].kvalue = NULL; 2111 2112 tmpptr = ctl_copyin_alloc(args[i].value, 2113 args[i].vallen, error_str, error_str_len); 2114 if (tmpptr == NULL) 2115 goto bailout; 2116 2117 args[i].kvalue = tmpptr; 2118 2119 if ((args[i].flags & CTL_BEARG_ASCII) 2120 && (tmpptr[args[i].vallen - 1] != '\0')) { 2121 snprintf(error_str, error_str_len, "Argument %d " 2122 "value is not NUL-terminated", i); 2123 goto bailout; 2124 } 2125 } 2126 2127 return (args); 2128 bailout: 2129 2130 ctl_free_args(num_be_args, args); 2131 2132 return (NULL); 2133 } 2134 2135 /* 2136 * Escape characters that are illegal or not recommended in XML. 2137 */ 2138 int 2139 ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2140 { 2141 int retval; 2142 2143 retval = 0; 2144 2145 for (; *str; str++) { 2146 switch (*str) { 2147 case '&': 2148 retval = sbuf_printf(sb, "&"); 2149 break; 2150 case '>': 2151 retval = sbuf_printf(sb, ">"); 2152 break; 2153 case '<': 2154 retval = sbuf_printf(sb, "<"); 2155 break; 2156 default: 2157 retval = sbuf_putc(sb, *str); 2158 break; 2159 } 2160 2161 if (retval != 0) 2162 break; 2163 2164 } 2165 2166 return (retval); 2167 } 2168 2169 static int 2170 ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2171 struct thread *td) 2172 { 2173 struct ctl_softc *softc; 2174 int retval; 2175 2176 softc = control_softc; 2177 2178 retval = 0; 2179 2180 switch (cmd) { 2181 case CTL_IO: { 2182 union ctl_io *io; 2183 void *pool_tmp; 2184 2185 /* 2186 * If we haven't been "enabled", don't allow any SCSI I/O 2187 * to this FETD. 2188 */ 2189 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2190 retval = -EPERM; 2191 break; 2192 } 2193 2194 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2195 if (io == NULL) { 2196 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2197 retval = -ENOSPC; 2198 break; 2199 } 2200 2201 /* 2202 * Need to save the pool reference so it doesn't get 2203 * spammed by the user's ctl_io. 2204 */ 2205 pool_tmp = io->io_hdr.pool; 2206 2207 memcpy(io, (void *)addr, sizeof(*io)); 2208 2209 io->io_hdr.pool = pool_tmp; 2210 /* 2211 * No status yet, so make sure the status is set properly. 2212 */ 2213 io->io_hdr.status = CTL_STATUS_NONE; 2214 2215 /* 2216 * The user sets the initiator ID, target and LUN IDs. 2217 */ 2218 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2219 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2220 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2221 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2222 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2223 2224 retval = ctl_ioctl_submit_wait(io); 2225 2226 if (retval != 0) { 2227 ctl_free_io(io); 2228 break; 2229 } 2230 2231 memcpy((void *)addr, io, sizeof(*io)); 2232 2233 /* return this to our pool */ 2234 ctl_free_io(io); 2235 2236 break; 2237 } 2238 case CTL_ENABLE_PORT: 2239 case CTL_DISABLE_PORT: 2240 case CTL_SET_PORT_WWNS: { 2241 struct ctl_frontend *fe; 2242 struct ctl_port_entry *entry; 2243 2244 entry = (struct ctl_port_entry *)addr; 2245 2246 mtx_lock(&softc->ctl_lock); 2247 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2248 int action, done; 2249 2250 action = 0; 2251 done = 0; 2252 2253 if ((entry->port_type == CTL_PORT_NONE) 2254 && (entry->targ_port == fe->targ_port)) { 2255 /* 2256 * If the user only wants to enable or 2257 * disable or set WWNs on a specific port, 2258 * do the operation and we're done. 2259 */ 2260 action = 1; 2261 done = 1; 2262 } else if (entry->port_type & fe->port_type) { 2263 /* 2264 * Compare the user's type mask with the 2265 * particular frontend type to see if we 2266 * have a match. 2267 */ 2268 action = 1; 2269 done = 0; 2270 2271 /* 2272 * Make sure the user isn't trying to set 2273 * WWNs on multiple ports at the same time. 2274 */ 2275 if (cmd == CTL_SET_PORT_WWNS) { 2276 printf("%s: Can't set WWNs on " 2277 "multiple ports\n", __func__); 2278 retval = EINVAL; 2279 break; 2280 } 2281 } 2282 if (action != 0) { 2283 /* 2284 * XXX KDM we have to drop the lock here, 2285 * because the online/offline operations 2286 * can potentially block. We need to 2287 * reference count the frontends so they 2288 * can't go away, 2289 */ 2290 mtx_unlock(&softc->ctl_lock); 2291 2292 if (cmd == CTL_ENABLE_PORT) { 2293 struct ctl_lun *lun; 2294 2295 STAILQ_FOREACH(lun, &softc->lun_list, 2296 links) { 2297 fe->lun_enable(fe->targ_lun_arg, 2298 lun->target, 2299 lun->lun); 2300 } 2301 2302 ctl_frontend_online(fe); 2303 } else if (cmd == CTL_DISABLE_PORT) { 2304 struct ctl_lun *lun; 2305 2306 ctl_frontend_offline(fe); 2307 2308 STAILQ_FOREACH(lun, &softc->lun_list, 2309 links) { 2310 fe->lun_disable( 2311 fe->targ_lun_arg, 2312 lun->target, 2313 lun->lun); 2314 } 2315 } 2316 2317 mtx_lock(&softc->ctl_lock); 2318 2319 if (cmd == CTL_SET_PORT_WWNS) 2320 ctl_frontend_set_wwns(fe, 2321 (entry->flags & CTL_PORT_WWNN_VALID) ? 2322 1 : 0, entry->wwnn, 2323 (entry->flags & CTL_PORT_WWPN_VALID) ? 2324 1 : 0, entry->wwpn); 2325 } 2326 if (done != 0) 2327 break; 2328 } 2329 mtx_unlock(&softc->ctl_lock); 2330 break; 2331 } 2332 case CTL_GET_PORT_LIST: { 2333 struct ctl_frontend *fe; 2334 struct ctl_port_list *list; 2335 int i; 2336 2337 list = (struct ctl_port_list *)addr; 2338 2339 if (list->alloc_len != (list->alloc_num * 2340 sizeof(struct ctl_port_entry))) { 2341 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2342 "alloc_num %u * sizeof(struct ctl_port_entry) " 2343 "%zu\n", __func__, list->alloc_len, 2344 list->alloc_num, sizeof(struct ctl_port_entry)); 2345 retval = EINVAL; 2346 break; 2347 } 2348 list->fill_len = 0; 2349 list->fill_num = 0; 2350 list->dropped_num = 0; 2351 i = 0; 2352 mtx_lock(&softc->ctl_lock); 2353 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2354 struct ctl_port_entry entry, *list_entry; 2355 2356 if (list->fill_num >= list->alloc_num) { 2357 list->dropped_num++; 2358 continue; 2359 } 2360 2361 entry.port_type = fe->port_type; 2362 strlcpy(entry.port_name, fe->port_name, 2363 sizeof(entry.port_name)); 2364 entry.targ_port = fe->targ_port; 2365 entry.physical_port = fe->physical_port; 2366 entry.virtual_port = fe->virtual_port; 2367 entry.wwnn = fe->wwnn; 2368 entry.wwpn = fe->wwpn; 2369 if (fe->status & CTL_PORT_STATUS_ONLINE) 2370 entry.online = 1; 2371 else 2372 entry.online = 0; 2373 2374 list_entry = &list->entries[i]; 2375 2376 retval = copyout(&entry, list_entry, sizeof(entry)); 2377 if (retval != 0) { 2378 printf("%s: CTL_GET_PORT_LIST: copyout " 2379 "returned %d\n", __func__, retval); 2380 break; 2381 } 2382 i++; 2383 list->fill_num++; 2384 list->fill_len += sizeof(entry); 2385 } 2386 mtx_unlock(&softc->ctl_lock); 2387 2388 /* 2389 * If this is non-zero, we had a copyout fault, so there's 2390 * probably no point in attempting to set the status inside 2391 * the structure. 2392 */ 2393 if (retval != 0) 2394 break; 2395 2396 if (list->dropped_num > 0) 2397 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2398 else 2399 list->status = CTL_PORT_LIST_OK; 2400 break; 2401 } 2402 case CTL_DUMP_OOA: { 2403 struct ctl_lun *lun; 2404 union ctl_io *io; 2405 char printbuf[128]; 2406 struct sbuf sb; 2407 2408 mtx_lock(&softc->ctl_lock); 2409 printf("Dumping OOA queues:\n"); 2410 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2411 for (io = (union ctl_io *)TAILQ_FIRST( 2412 &lun->ooa_queue); io != NULL; 2413 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2414 ooa_links)) { 2415 sbuf_new(&sb, printbuf, sizeof(printbuf), 2416 SBUF_FIXEDLEN); 2417 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2418 (intmax_t)lun->lun, 2419 io->scsiio.tag_num, 2420 (io->io_hdr.flags & 2421 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2422 (io->io_hdr.flags & 2423 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2424 (io->io_hdr.flags & 2425 CTL_FLAG_ABORT) ? " ABORT" : "", 2426 (io->io_hdr.flags & 2427 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2428 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2429 sbuf_finish(&sb); 2430 printf("%s\n", sbuf_data(&sb)); 2431 } 2432 } 2433 printf("OOA queues dump done\n"); 2434 mtx_unlock(&softc->ctl_lock); 2435 break; 2436 } 2437 case CTL_GET_OOA: { 2438 struct ctl_lun *lun; 2439 struct ctl_ooa *ooa_hdr; 2440 struct ctl_ooa_entry *entries; 2441 uint32_t cur_fill_num; 2442 2443 ooa_hdr = (struct ctl_ooa *)addr; 2444 2445 if ((ooa_hdr->alloc_len == 0) 2446 || (ooa_hdr->alloc_num == 0)) { 2447 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2448 "must be non-zero\n", __func__, 2449 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2450 retval = EINVAL; 2451 break; 2452 } 2453 2454 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2455 sizeof(struct ctl_ooa_entry))) { 2456 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2457 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2458 __func__, ooa_hdr->alloc_len, 2459 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2460 retval = EINVAL; 2461 break; 2462 } 2463 2464 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2465 if (entries == NULL) { 2466 printf("%s: could not allocate %d bytes for OOA " 2467 "dump\n", __func__, ooa_hdr->alloc_len); 2468 retval = ENOMEM; 2469 break; 2470 } 2471 2472 mtx_lock(&softc->ctl_lock); 2473 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2474 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2475 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2476 mtx_unlock(&softc->ctl_lock); 2477 free(entries, M_CTL); 2478 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2479 __func__, (uintmax_t)ooa_hdr->lun_num); 2480 retval = EINVAL; 2481 break; 2482 } 2483 2484 cur_fill_num = 0; 2485 2486 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2487 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2488 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2489 ooa_hdr, entries); 2490 if (retval != 0) 2491 break; 2492 } 2493 if (retval != 0) { 2494 mtx_unlock(&softc->ctl_lock); 2495 free(entries, M_CTL); 2496 break; 2497 } 2498 } else { 2499 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2500 2501 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2502 entries); 2503 } 2504 mtx_unlock(&softc->ctl_lock); 2505 2506 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2507 ooa_hdr->fill_len = ooa_hdr->fill_num * 2508 sizeof(struct ctl_ooa_entry); 2509 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2510 if (retval != 0) { 2511 printf("%s: error copying out %d bytes for OOA dump\n", 2512 __func__, ooa_hdr->fill_len); 2513 } 2514 2515 getbintime(&ooa_hdr->cur_bt); 2516 2517 if (cur_fill_num > ooa_hdr->alloc_num) { 2518 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2519 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2520 } else { 2521 ooa_hdr->dropped_num = 0; 2522 ooa_hdr->status = CTL_OOA_OK; 2523 } 2524 2525 free(entries, M_CTL); 2526 break; 2527 } 2528 case CTL_CHECK_OOA: { 2529 union ctl_io *io; 2530 struct ctl_lun *lun; 2531 struct ctl_ooa_info *ooa_info; 2532 2533 2534 ooa_info = (struct ctl_ooa_info *)addr; 2535 2536 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2537 ooa_info->status = CTL_OOA_INVALID_LUN; 2538 break; 2539 } 2540 mtx_lock(&softc->ctl_lock); 2541 lun = softc->ctl_luns[ooa_info->lun_id]; 2542 if (lun == NULL) { 2543 mtx_unlock(&softc->ctl_lock); 2544 ooa_info->status = CTL_OOA_INVALID_LUN; 2545 break; 2546 } 2547 2548 ooa_info->num_entries = 0; 2549 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2550 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2551 &io->io_hdr, ooa_links)) { 2552 ooa_info->num_entries++; 2553 } 2554 2555 mtx_unlock(&softc->ctl_lock); 2556 ooa_info->status = CTL_OOA_SUCCESS; 2557 2558 break; 2559 } 2560 case CTL_HARD_START: 2561 case CTL_HARD_STOP: { 2562 struct ctl_fe_ioctl_startstop_info ss_info; 2563 struct cfi_metatask *metatask; 2564 struct mtx hs_mtx; 2565 2566 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2567 2568 cv_init(&ss_info.sem, "hard start/stop cv" ); 2569 2570 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2571 if (metatask == NULL) { 2572 retval = ENOMEM; 2573 mtx_destroy(&hs_mtx); 2574 break; 2575 } 2576 2577 if (cmd == CTL_HARD_START) 2578 metatask->tasktype = CFI_TASK_STARTUP; 2579 else 2580 metatask->tasktype = CFI_TASK_SHUTDOWN; 2581 2582 metatask->callback = ctl_ioctl_hard_startstop_callback; 2583 metatask->callback_arg = &ss_info; 2584 2585 cfi_action(metatask); 2586 2587 /* Wait for the callback */ 2588 mtx_lock(&hs_mtx); 2589 cv_wait_sig(&ss_info.sem, &hs_mtx); 2590 mtx_unlock(&hs_mtx); 2591 2592 /* 2593 * All information has been copied from the metatask by the 2594 * time cv_broadcast() is called, so we free the metatask here. 2595 */ 2596 cfi_free_metatask(metatask); 2597 2598 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2599 2600 mtx_destroy(&hs_mtx); 2601 break; 2602 } 2603 case CTL_BBRREAD: { 2604 struct ctl_bbrread_info *bbr_info; 2605 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2606 struct mtx bbr_mtx; 2607 struct cfi_metatask *metatask; 2608 2609 bbr_info = (struct ctl_bbrread_info *)addr; 2610 2611 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2612 2613 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2614 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2615 2616 fe_bbr_info.bbr_info = bbr_info; 2617 fe_bbr_info.lock = &bbr_mtx; 2618 2619 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2620 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2621 2622 if (metatask == NULL) { 2623 mtx_destroy(&bbr_mtx); 2624 cv_destroy(&fe_bbr_info.sem); 2625 retval = ENOMEM; 2626 break; 2627 } 2628 metatask->tasktype = CFI_TASK_BBRREAD; 2629 metatask->callback = ctl_ioctl_bbrread_callback; 2630 metatask->callback_arg = &fe_bbr_info; 2631 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2632 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2633 metatask->taskinfo.bbrread.len = bbr_info->len; 2634 2635 cfi_action(metatask); 2636 2637 mtx_lock(&bbr_mtx); 2638 while (fe_bbr_info.wakeup_done == 0) 2639 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2640 mtx_unlock(&bbr_mtx); 2641 2642 bbr_info->status = metatask->status; 2643 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2644 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2645 memcpy(&bbr_info->sense_data, 2646 &metatask->taskinfo.bbrread.sense_data, 2647 ctl_min(sizeof(bbr_info->sense_data), 2648 sizeof(metatask->taskinfo.bbrread.sense_data))); 2649 2650 cfi_free_metatask(metatask); 2651 2652 mtx_destroy(&bbr_mtx); 2653 cv_destroy(&fe_bbr_info.sem); 2654 2655 break; 2656 } 2657 case CTL_DELAY_IO: { 2658 struct ctl_io_delay_info *delay_info; 2659 #ifdef CTL_IO_DELAY 2660 struct ctl_lun *lun; 2661 #endif /* CTL_IO_DELAY */ 2662 2663 delay_info = (struct ctl_io_delay_info *)addr; 2664 2665 #ifdef CTL_IO_DELAY 2666 mtx_lock(&softc->ctl_lock); 2667 2668 if ((delay_info->lun_id > CTL_MAX_LUNS) 2669 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2670 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2671 } else { 2672 lun = softc->ctl_luns[delay_info->lun_id]; 2673 2674 delay_info->status = CTL_DELAY_STATUS_OK; 2675 2676 switch (delay_info->delay_type) { 2677 case CTL_DELAY_TYPE_CONT: 2678 break; 2679 case CTL_DELAY_TYPE_ONESHOT: 2680 break; 2681 default: 2682 delay_info->status = 2683 CTL_DELAY_STATUS_INVALID_TYPE; 2684 break; 2685 } 2686 2687 switch (delay_info->delay_loc) { 2688 case CTL_DELAY_LOC_DATAMOVE: 2689 lun->delay_info.datamove_type = 2690 delay_info->delay_type; 2691 lun->delay_info.datamove_delay = 2692 delay_info->delay_secs; 2693 break; 2694 case CTL_DELAY_LOC_DONE: 2695 lun->delay_info.done_type = 2696 delay_info->delay_type; 2697 lun->delay_info.done_delay = 2698 delay_info->delay_secs; 2699 break; 2700 default: 2701 delay_info->status = 2702 CTL_DELAY_STATUS_INVALID_LOC; 2703 break; 2704 } 2705 } 2706 2707 mtx_unlock(&softc->ctl_lock); 2708 #else 2709 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2710 #endif /* CTL_IO_DELAY */ 2711 break; 2712 } 2713 case CTL_REALSYNC_SET: { 2714 int *syncstate; 2715 2716 syncstate = (int *)addr; 2717 2718 mtx_lock(&softc->ctl_lock); 2719 switch (*syncstate) { 2720 case 0: 2721 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2722 break; 2723 case 1: 2724 softc->flags |= CTL_FLAG_REAL_SYNC; 2725 break; 2726 default: 2727 retval = -EINVAL; 2728 break; 2729 } 2730 mtx_unlock(&softc->ctl_lock); 2731 break; 2732 } 2733 case CTL_REALSYNC_GET: { 2734 int *syncstate; 2735 2736 syncstate = (int*)addr; 2737 2738 mtx_lock(&softc->ctl_lock); 2739 if (softc->flags & CTL_FLAG_REAL_SYNC) 2740 *syncstate = 1; 2741 else 2742 *syncstate = 0; 2743 mtx_unlock(&softc->ctl_lock); 2744 2745 break; 2746 } 2747 case CTL_SETSYNC: 2748 case CTL_GETSYNC: { 2749 struct ctl_sync_info *sync_info; 2750 struct ctl_lun *lun; 2751 2752 sync_info = (struct ctl_sync_info *)addr; 2753 2754 mtx_lock(&softc->ctl_lock); 2755 lun = softc->ctl_luns[sync_info->lun_id]; 2756 if (lun == NULL) { 2757 mtx_unlock(&softc->ctl_lock); 2758 sync_info->status = CTL_GS_SYNC_NO_LUN; 2759 } 2760 /* 2761 * Get or set the sync interval. We're not bounds checking 2762 * in the set case, hopefully the user won't do something 2763 * silly. 2764 */ 2765 if (cmd == CTL_GETSYNC) 2766 sync_info->sync_interval = lun->sync_interval; 2767 else 2768 lun->sync_interval = sync_info->sync_interval; 2769 2770 mtx_unlock(&softc->ctl_lock); 2771 2772 sync_info->status = CTL_GS_SYNC_OK; 2773 2774 break; 2775 } 2776 case CTL_GETSTATS: { 2777 struct ctl_stats *stats; 2778 struct ctl_lun *lun; 2779 int i; 2780 2781 stats = (struct ctl_stats *)addr; 2782 2783 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2784 stats->alloc_len) { 2785 stats->status = CTL_SS_NEED_MORE_SPACE; 2786 stats->num_luns = softc->num_luns; 2787 break; 2788 } 2789 /* 2790 * XXX KDM no locking here. If the LUN list changes, 2791 * things can blow up. 2792 */ 2793 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2794 i++, lun = STAILQ_NEXT(lun, links)) { 2795 retval = copyout(&lun->stats, &stats->lun_stats[i], 2796 sizeof(lun->stats)); 2797 if (retval != 0) 2798 break; 2799 } 2800 stats->num_luns = softc->num_luns; 2801 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2802 softc->num_luns; 2803 stats->status = CTL_SS_OK; 2804 #ifdef CTL_TIME_IO 2805 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2806 #else 2807 stats->flags = CTL_STATS_FLAG_NONE; 2808 #endif 2809 getnanouptime(&stats->timestamp); 2810 break; 2811 } 2812 case CTL_ERROR_INJECT: { 2813 struct ctl_error_desc *err_desc, *new_err_desc; 2814 struct ctl_lun *lun; 2815 2816 err_desc = (struct ctl_error_desc *)addr; 2817 2818 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2819 M_WAITOK | M_ZERO); 2820 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2821 2822 mtx_lock(&softc->ctl_lock); 2823 lun = softc->ctl_luns[err_desc->lun_id]; 2824 if (lun == NULL) { 2825 mtx_unlock(&softc->ctl_lock); 2826 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2827 __func__, (uintmax_t)err_desc->lun_id); 2828 retval = EINVAL; 2829 break; 2830 } 2831 2832 /* 2833 * We could do some checking here to verify the validity 2834 * of the request, but given the complexity of error 2835 * injection requests, the checking logic would be fairly 2836 * complex. 2837 * 2838 * For now, if the request is invalid, it just won't get 2839 * executed and might get deleted. 2840 */ 2841 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2842 2843 /* 2844 * XXX KDM check to make sure the serial number is unique, 2845 * in case we somehow manage to wrap. That shouldn't 2846 * happen for a very long time, but it's the right thing to 2847 * do. 2848 */ 2849 new_err_desc->serial = lun->error_serial; 2850 err_desc->serial = lun->error_serial; 2851 lun->error_serial++; 2852 2853 mtx_unlock(&softc->ctl_lock); 2854 break; 2855 } 2856 case CTL_ERROR_INJECT_DELETE: { 2857 struct ctl_error_desc *delete_desc, *desc, *desc2; 2858 struct ctl_lun *lun; 2859 int delete_done; 2860 2861 delete_desc = (struct ctl_error_desc *)addr; 2862 delete_done = 0; 2863 2864 mtx_lock(&softc->ctl_lock); 2865 lun = softc->ctl_luns[delete_desc->lun_id]; 2866 if (lun == NULL) { 2867 mtx_unlock(&softc->ctl_lock); 2868 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2869 __func__, (uintmax_t)delete_desc->lun_id); 2870 retval = EINVAL; 2871 break; 2872 } 2873 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2874 if (desc->serial != delete_desc->serial) 2875 continue; 2876 2877 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2878 links); 2879 free(desc, M_CTL); 2880 delete_done = 1; 2881 } 2882 mtx_unlock(&softc->ctl_lock); 2883 if (delete_done == 0) { 2884 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2885 "error serial %ju on LUN %u\n", __func__, 2886 delete_desc->serial, delete_desc->lun_id); 2887 retval = EINVAL; 2888 break; 2889 } 2890 break; 2891 } 2892 case CTL_DUMP_STRUCTS: { 2893 int i, j, k; 2894 struct ctl_frontend *fe; 2895 2896 printf("CTL IID to WWPN map start:\n"); 2897 for (i = 0; i < CTL_MAX_PORTS; i++) { 2898 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2899 if (softc->wwpn_iid[i][j].in_use == 0) 2900 continue; 2901 2902 printf("port %d iid %u WWPN %#jx\n", 2903 softc->wwpn_iid[i][j].port, 2904 softc->wwpn_iid[i][j].iid, 2905 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2906 } 2907 } 2908 printf("CTL IID to WWPN map end\n"); 2909 printf("CTL Persistent Reservation information start:\n"); 2910 for (i = 0; i < CTL_MAX_LUNS; i++) { 2911 struct ctl_lun *lun; 2912 2913 lun = softc->ctl_luns[i]; 2914 2915 if ((lun == NULL) 2916 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2917 continue; 2918 2919 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2920 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2921 if (lun->per_res[j+k].registered == 0) 2922 continue; 2923 printf("LUN %d port %d iid %d key " 2924 "%#jx\n", i, j, k, 2925 (uintmax_t)scsi_8btou64( 2926 lun->per_res[j+k].res_key.key)); 2927 } 2928 } 2929 } 2930 printf("CTL Persistent Reservation information end\n"); 2931 printf("CTL Frontends:\n"); 2932 /* 2933 * XXX KDM calling this without a lock. We'd likely want 2934 * to drop the lock before calling the frontend's dump 2935 * routine anyway. 2936 */ 2937 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2938 printf("Frontend %s Type %u pport %d vport %d WWNN " 2939 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2940 fe->physical_port, fe->virtual_port, 2941 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2942 2943 /* 2944 * Frontends are not required to support the dump 2945 * routine. 2946 */ 2947 if (fe->fe_dump == NULL) 2948 continue; 2949 2950 fe->fe_dump(); 2951 } 2952 printf("CTL Frontend information end\n"); 2953 break; 2954 } 2955 case CTL_LUN_REQ: { 2956 struct ctl_lun_req *lun_req; 2957 struct ctl_backend_driver *backend; 2958 2959 lun_req = (struct ctl_lun_req *)addr; 2960 2961 backend = ctl_backend_find(lun_req->backend); 2962 if (backend == NULL) { 2963 lun_req->status = CTL_LUN_ERROR; 2964 snprintf(lun_req->error_str, 2965 sizeof(lun_req->error_str), 2966 "Backend \"%s\" not found.", 2967 lun_req->backend); 2968 break; 2969 } 2970 if (lun_req->num_be_args > 0) { 2971 lun_req->kern_be_args = ctl_copyin_args( 2972 lun_req->num_be_args, 2973 lun_req->be_args, 2974 lun_req->error_str, 2975 sizeof(lun_req->error_str)); 2976 if (lun_req->kern_be_args == NULL) { 2977 lun_req->status = CTL_LUN_ERROR; 2978 break; 2979 } 2980 } 2981 2982 retval = backend->ioctl(dev, cmd, addr, flag, td); 2983 2984 if (lun_req->num_be_args > 0) { 2985 ctl_free_args(lun_req->num_be_args, 2986 lun_req->kern_be_args); 2987 } 2988 break; 2989 } 2990 case CTL_LUN_LIST: { 2991 struct sbuf *sb; 2992 struct ctl_lun *lun; 2993 struct ctl_lun_list *list; 2994 struct ctl_be_lun_option *opt; 2995 2996 list = (struct ctl_lun_list *)addr; 2997 2998 /* 2999 * Allocate a fixed length sbuf here, based on the length 3000 * of the user's buffer. We could allocate an auto-extending 3001 * buffer, and then tell the user how much larger our 3002 * amount of data is than his buffer, but that presents 3003 * some problems: 3004 * 3005 * 1. The sbuf(9) routines use a blocking malloc, and so 3006 * we can't hold a lock while calling them with an 3007 * auto-extending buffer. 3008 * 3009 * 2. There is not currently a LUN reference counting 3010 * mechanism, outside of outstanding transactions on 3011 * the LUN's OOA queue. So a LUN could go away on us 3012 * while we're getting the LUN number, backend-specific 3013 * information, etc. Thus, given the way things 3014 * currently work, we need to hold the CTL lock while 3015 * grabbing LUN information. 3016 * 3017 * So, from the user's standpoint, the best thing to do is 3018 * allocate what he thinks is a reasonable buffer length, 3019 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3020 * double the buffer length and try again. (And repeat 3021 * that until he succeeds.) 3022 */ 3023 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3024 if (sb == NULL) { 3025 list->status = CTL_LUN_LIST_ERROR; 3026 snprintf(list->error_str, sizeof(list->error_str), 3027 "Unable to allocate %d bytes for LUN list", 3028 list->alloc_len); 3029 break; 3030 } 3031 3032 sbuf_printf(sb, "<ctllunlist>\n"); 3033 3034 mtx_lock(&softc->ctl_lock); 3035 3036 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3037 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3038 (uintmax_t)lun->lun); 3039 3040 /* 3041 * Bail out as soon as we see that we've overfilled 3042 * the buffer. 3043 */ 3044 if (retval != 0) 3045 break; 3046 3047 retval = sbuf_printf(sb, "<backend_type>%s" 3048 "</backend_type>\n", 3049 (lun->backend == NULL) ? "none" : 3050 lun->backend->name); 3051 3052 if (retval != 0) 3053 break; 3054 3055 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3056 lun->be_lun->lun_type); 3057 3058 if (retval != 0) 3059 break; 3060 3061 if (lun->backend == NULL) { 3062 retval = sbuf_printf(sb, "</lun>\n"); 3063 if (retval != 0) 3064 break; 3065 continue; 3066 } 3067 3068 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3069 (lun->be_lun->maxlba > 0) ? 3070 lun->be_lun->maxlba + 1 : 0); 3071 3072 if (retval != 0) 3073 break; 3074 3075 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3076 lun->be_lun->blocksize); 3077 3078 if (retval != 0) 3079 break; 3080 3081 retval = sbuf_printf(sb, "<serial_number>"); 3082 3083 if (retval != 0) 3084 break; 3085 3086 retval = ctl_sbuf_printf_esc(sb, 3087 lun->be_lun->serial_num); 3088 3089 if (retval != 0) 3090 break; 3091 3092 retval = sbuf_printf(sb, "</serial_number>\n"); 3093 3094 if (retval != 0) 3095 break; 3096 3097 retval = sbuf_printf(sb, "<device_id>"); 3098 3099 if (retval != 0) 3100 break; 3101 3102 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3103 3104 if (retval != 0) 3105 break; 3106 3107 retval = sbuf_printf(sb, "</device_id>\n"); 3108 3109 if (retval != 0) 3110 break; 3111 3112 if (lun->backend->lun_info != NULL) { 3113 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3114 if (retval != 0) 3115 break; 3116 } 3117 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3118 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3119 if (retval != 0) 3120 break; 3121 } 3122 3123 retval = sbuf_printf(sb, "</lun>\n"); 3124 3125 if (retval != 0) 3126 break; 3127 } 3128 mtx_unlock(&softc->ctl_lock); 3129 3130 if ((retval != 0) 3131 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3132 retval = 0; 3133 sbuf_delete(sb); 3134 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3135 snprintf(list->error_str, sizeof(list->error_str), 3136 "Out of space, %d bytes is too small", 3137 list->alloc_len); 3138 break; 3139 } 3140 3141 sbuf_finish(sb); 3142 3143 retval = copyout(sbuf_data(sb), list->lun_xml, 3144 sbuf_len(sb) + 1); 3145 3146 list->fill_len = sbuf_len(sb) + 1; 3147 list->status = CTL_LUN_LIST_OK; 3148 sbuf_delete(sb); 3149 break; 3150 } 3151 default: { 3152 /* XXX KDM should we fix this? */ 3153 #if 0 3154 struct ctl_backend_driver *backend; 3155 unsigned int type; 3156 int found; 3157 3158 found = 0; 3159 3160 /* 3161 * We encode the backend type as the ioctl type for backend 3162 * ioctls. So parse it out here, and then search for a 3163 * backend of this type. 3164 */ 3165 type = _IOC_TYPE(cmd); 3166 3167 STAILQ_FOREACH(backend, &softc->be_list, links) { 3168 if (backend->type == type) { 3169 found = 1; 3170 break; 3171 } 3172 } 3173 if (found == 0) { 3174 printf("ctl: unknown ioctl command %#lx or backend " 3175 "%d\n", cmd, type); 3176 retval = -EINVAL; 3177 break; 3178 } 3179 retval = backend->ioctl(dev, cmd, addr, flag, td); 3180 #endif 3181 retval = ENOTTY; 3182 break; 3183 } 3184 } 3185 return (retval); 3186 } 3187 3188 uint32_t 3189 ctl_get_initindex(struct ctl_nexus *nexus) 3190 { 3191 if (nexus->targ_port < CTL_MAX_PORTS) 3192 return (nexus->initid.id + 3193 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3194 else 3195 return (nexus->initid.id + 3196 ((nexus->targ_port - CTL_MAX_PORTS) * 3197 CTL_MAX_INIT_PER_PORT)); 3198 } 3199 3200 uint32_t 3201 ctl_get_resindex(struct ctl_nexus *nexus) 3202 { 3203 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3204 } 3205 3206 uint32_t 3207 ctl_port_idx(int port_num) 3208 { 3209 if (port_num < CTL_MAX_PORTS) 3210 return(port_num); 3211 else 3212 return(port_num - CTL_MAX_PORTS); 3213 } 3214 3215 /* 3216 * Note: This only works for bitmask sizes that are at least 32 bits, and 3217 * that are a power of 2. 3218 */ 3219 int 3220 ctl_ffz(uint32_t *mask, uint32_t size) 3221 { 3222 uint32_t num_chunks, num_pieces; 3223 int i, j; 3224 3225 num_chunks = (size >> 5); 3226 if (num_chunks == 0) 3227 num_chunks++; 3228 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3229 3230 for (i = 0; i < num_chunks; i++) { 3231 for (j = 0; j < num_pieces; j++) { 3232 if ((mask[i] & (1 << j)) == 0) 3233 return ((i << 5) + j); 3234 } 3235 } 3236 3237 return (-1); 3238 } 3239 3240 int 3241 ctl_set_mask(uint32_t *mask, uint32_t bit) 3242 { 3243 uint32_t chunk, piece; 3244 3245 chunk = bit >> 5; 3246 piece = bit % (sizeof(uint32_t) * 8); 3247 3248 if ((mask[chunk] & (1 << piece)) != 0) 3249 return (-1); 3250 else 3251 mask[chunk] |= (1 << piece); 3252 3253 return (0); 3254 } 3255 3256 int 3257 ctl_clear_mask(uint32_t *mask, uint32_t bit) 3258 { 3259 uint32_t chunk, piece; 3260 3261 chunk = bit >> 5; 3262 piece = bit % (sizeof(uint32_t) * 8); 3263 3264 if ((mask[chunk] & (1 << piece)) == 0) 3265 return (-1); 3266 else 3267 mask[chunk] &= ~(1 << piece); 3268 3269 return (0); 3270 } 3271 3272 int 3273 ctl_is_set(uint32_t *mask, uint32_t bit) 3274 { 3275 uint32_t chunk, piece; 3276 3277 chunk = bit >> 5; 3278 piece = bit % (sizeof(uint32_t) * 8); 3279 3280 if ((mask[chunk] & (1 << piece)) == 0) 3281 return (0); 3282 else 3283 return (1); 3284 } 3285 3286 #ifdef unused 3287 /* 3288 * The bus, target and lun are optional, they can be filled in later. 3289 * can_wait is used to determine whether we can wait on the malloc or not. 3290 */ 3291 union ctl_io* 3292 ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3293 uint32_t targ_lun, int can_wait) 3294 { 3295 union ctl_io *io; 3296 3297 if (can_wait) 3298 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3299 else 3300 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3301 3302 if (io != NULL) { 3303 io->io_hdr.io_type = io_type; 3304 io->io_hdr.targ_port = targ_port; 3305 /* 3306 * XXX KDM this needs to change/go away. We need to move 3307 * to a preallocated pool of ctl_scsiio structures. 3308 */ 3309 io->io_hdr.nexus.targ_target.id = targ_target; 3310 io->io_hdr.nexus.targ_lun = targ_lun; 3311 } 3312 3313 return (io); 3314 } 3315 3316 void 3317 ctl_kfree_io(union ctl_io *io) 3318 { 3319 free(io, M_CTL); 3320 } 3321 #endif /* unused */ 3322 3323 /* 3324 * ctl_softc, pool_type, total_ctl_io are passed in. 3325 * npool is passed out. 3326 */ 3327 int 3328 ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3329 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3330 { 3331 uint32_t i; 3332 union ctl_io *cur_io, *next_io; 3333 struct ctl_io_pool *pool; 3334 int retval; 3335 3336 retval = 0; 3337 3338 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3339 M_NOWAIT | M_ZERO); 3340 if (pool == NULL) { 3341 retval = -ENOMEM; 3342 goto bailout; 3343 } 3344 3345 pool->type = pool_type; 3346 pool->ctl_softc = ctl_softc; 3347 3348 mtx_lock(&ctl_softc->ctl_lock); 3349 pool->id = ctl_softc->cur_pool_id++; 3350 mtx_unlock(&ctl_softc->ctl_lock); 3351 3352 pool->flags = CTL_POOL_FLAG_NONE; 3353 STAILQ_INIT(&pool->free_queue); 3354 3355 /* 3356 * XXX KDM other options here: 3357 * - allocate a page at a time 3358 * - allocate one big chunk of memory. 3359 * Page allocation might work well, but would take a little more 3360 * tracking. 3361 */ 3362 for (i = 0; i < total_ctl_io; i++) { 3363 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3364 M_NOWAIT); 3365 if (cur_io == NULL) { 3366 retval = ENOMEM; 3367 break; 3368 } 3369 cur_io->io_hdr.pool = pool; 3370 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3371 pool->total_ctl_io++; 3372 pool->free_ctl_io++; 3373 } 3374 3375 if (retval != 0) { 3376 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3377 cur_io != NULL; cur_io = next_io) { 3378 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3379 links); 3380 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3381 ctl_io_hdr, links); 3382 free(cur_io, M_CTL); 3383 } 3384 3385 free(pool, M_CTL); 3386 goto bailout; 3387 } 3388 mtx_lock(&ctl_softc->ctl_lock); 3389 ctl_softc->num_pools++; 3390 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3391 /* 3392 * Increment our usage count if this is an external consumer, so we 3393 * can't get unloaded until the external consumer (most likely a 3394 * FETD) unloads and frees his pool. 3395 * 3396 * XXX KDM will this increment the caller's module use count, or 3397 * mine? 3398 */ 3399 #if 0 3400 if ((pool_type != CTL_POOL_EMERGENCY) 3401 && (pool_type != CTL_POOL_INTERNAL) 3402 && (pool_type != CTL_POOL_IOCTL) 3403 && (pool_type != CTL_POOL_4OTHERSC)) 3404 MOD_INC_USE_COUNT; 3405 #endif 3406 3407 mtx_unlock(&ctl_softc->ctl_lock); 3408 3409 *npool = pool; 3410 3411 bailout: 3412 3413 return (retval); 3414 } 3415 3416 int 3417 ctl_pool_acquire(struct ctl_io_pool *pool) 3418 { 3419 3420 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 3421 3422 if (pool == NULL) 3423 return (-EINVAL); 3424 3425 if (pool->flags & CTL_POOL_FLAG_INVALID) 3426 return (-EINVAL); 3427 3428 pool->refcount++; 3429 3430 return (0); 3431 } 3432 3433 int 3434 ctl_pool_invalidate(struct ctl_io_pool *pool) 3435 { 3436 3437 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 3438 3439 if (pool == NULL) 3440 return (-EINVAL); 3441 3442 pool->flags |= CTL_POOL_FLAG_INVALID; 3443 3444 return (0); 3445 } 3446 3447 int 3448 ctl_pool_release(struct ctl_io_pool *pool) 3449 { 3450 3451 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 3452 3453 if (pool == NULL) 3454 return (-EINVAL); 3455 3456 if ((--pool->refcount == 0) 3457 && (pool->flags & CTL_POOL_FLAG_INVALID)) { 3458 ctl_pool_free(pool->ctl_softc, pool); 3459 } 3460 3461 return (0); 3462 } 3463 3464 void 3465 ctl_pool_free(struct ctl_softc *ctl_softc, struct ctl_io_pool *pool) 3466 { 3467 union ctl_io *cur_io, *next_io; 3468 3469 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 3470 3471 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3472 cur_io != NULL; cur_io = next_io) { 3473 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3474 links); 3475 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, ctl_io_hdr, 3476 links); 3477 free(cur_io, M_CTL); 3478 } 3479 3480 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3481 ctl_softc->num_pools--; 3482 3483 /* 3484 * XXX KDM will this decrement the caller's usage count or mine? 3485 */ 3486 #if 0 3487 if ((pool->type != CTL_POOL_EMERGENCY) 3488 && (pool->type != CTL_POOL_INTERNAL) 3489 && (pool->type != CTL_POOL_IOCTL)) 3490 MOD_DEC_USE_COUNT; 3491 #endif 3492 3493 free(pool, M_CTL); 3494 } 3495 3496 /* 3497 * This routine does not block (except for spinlocks of course). 3498 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3499 * possible. 3500 */ 3501 union ctl_io * 3502 ctl_alloc_io(void *pool_ref) 3503 { 3504 union ctl_io *io; 3505 struct ctl_softc *ctl_softc; 3506 struct ctl_io_pool *pool, *npool; 3507 struct ctl_io_pool *emergency_pool; 3508 3509 pool = (struct ctl_io_pool *)pool_ref; 3510 3511 if (pool == NULL) { 3512 printf("%s: pool is NULL\n", __func__); 3513 return (NULL); 3514 } 3515 3516 emergency_pool = NULL; 3517 3518 ctl_softc = pool->ctl_softc; 3519 3520 mtx_lock(&ctl_softc->ctl_lock); 3521 /* 3522 * First, try to get the io structure from the user's pool. 3523 */ 3524 if (ctl_pool_acquire(pool) == 0) { 3525 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3526 if (io != NULL) { 3527 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3528 pool->total_allocated++; 3529 pool->free_ctl_io--; 3530 mtx_unlock(&ctl_softc->ctl_lock); 3531 return (io); 3532 } else 3533 ctl_pool_release(pool); 3534 } 3535 /* 3536 * If he doesn't have any io structures left, search for an 3537 * emergency pool and grab one from there. 3538 */ 3539 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3540 if (npool->type != CTL_POOL_EMERGENCY) 3541 continue; 3542 3543 if (ctl_pool_acquire(npool) != 0) 3544 continue; 3545 3546 emergency_pool = npool; 3547 3548 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3549 if (io != NULL) { 3550 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3551 npool->total_allocated++; 3552 npool->free_ctl_io--; 3553 mtx_unlock(&ctl_softc->ctl_lock); 3554 return (io); 3555 } else 3556 ctl_pool_release(npool); 3557 } 3558 3559 /* Drop the spinlock before we malloc */ 3560 mtx_unlock(&ctl_softc->ctl_lock); 3561 3562 /* 3563 * The emergency pool (if it exists) didn't have one, so try an 3564 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3565 */ 3566 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3567 if (io != NULL) { 3568 /* 3569 * If the emergency pool exists but is empty, add this 3570 * ctl_io to its list when it gets freed. 3571 */ 3572 if (emergency_pool != NULL) { 3573 mtx_lock(&ctl_softc->ctl_lock); 3574 if (ctl_pool_acquire(emergency_pool) == 0) { 3575 io->io_hdr.pool = emergency_pool; 3576 emergency_pool->total_ctl_io++; 3577 /* 3578 * Need to bump this, otherwise 3579 * total_allocated and total_freed won't 3580 * match when we no longer have anything 3581 * outstanding. 3582 */ 3583 emergency_pool->total_allocated++; 3584 } 3585 mtx_unlock(&ctl_softc->ctl_lock); 3586 } else 3587 io->io_hdr.pool = NULL; 3588 } 3589 3590 return (io); 3591 } 3592 3593 static void 3594 ctl_free_io_internal(union ctl_io *io, int have_lock) 3595 { 3596 if (io == NULL) 3597 return; 3598 3599 /* 3600 * If this ctl_io has a pool, return it to that pool. 3601 */ 3602 if (io->io_hdr.pool != NULL) { 3603 struct ctl_io_pool *pool; 3604 #if 0 3605 struct ctl_softc *ctl_softc; 3606 union ctl_io *tmp_io; 3607 unsigned long xflags; 3608 int i; 3609 3610 ctl_softc = control_softc; 3611 #endif 3612 3613 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3614 3615 if (have_lock == 0) 3616 mtx_lock(&pool->ctl_softc->ctl_lock); 3617 #if 0 3618 save_flags(xflags); 3619 3620 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3621 &ctl_softc->task_queue); tmp_io != NULL; i++, 3622 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3623 links)) { 3624 if (tmp_io == io) { 3625 printf("%s: %p is still on the task queue!\n", 3626 __func__, tmp_io); 3627 printf("%s: (%d): type %d " 3628 "msg %d cdb %x iptl: " 3629 "%d:%d:%d:%d tag 0x%04x " 3630 "flg %#lx\n", 3631 __func__, i, 3632 tmp_io->io_hdr.io_type, 3633 tmp_io->io_hdr.msg_type, 3634 tmp_io->scsiio.cdb[0], 3635 tmp_io->io_hdr.nexus.initid.id, 3636 tmp_io->io_hdr.nexus.targ_port, 3637 tmp_io->io_hdr.nexus.targ_target.id, 3638 tmp_io->io_hdr.nexus.targ_lun, 3639 (tmp_io->io_hdr.io_type == 3640 CTL_IO_TASK) ? 3641 tmp_io->taskio.tag_num : 3642 tmp_io->scsiio.tag_num, 3643 xflags); 3644 panic("I/O still on the task queue!"); 3645 } 3646 } 3647 #endif 3648 io->io_hdr.io_type = 0xff; 3649 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3650 pool->total_freed++; 3651 pool->free_ctl_io++; 3652 ctl_pool_release(pool); 3653 if (have_lock == 0) 3654 mtx_unlock(&pool->ctl_softc->ctl_lock); 3655 } else { 3656 /* 3657 * Otherwise, just free it. We probably malloced it and 3658 * the emergency pool wasn't available. 3659 */ 3660 free(io, M_CTL); 3661 } 3662 3663 } 3664 3665 void 3666 ctl_free_io(union ctl_io *io) 3667 { 3668 ctl_free_io_internal(io, /*have_lock*/ 0); 3669 } 3670 3671 void 3672 ctl_zero_io(union ctl_io *io) 3673 { 3674 void *pool_ref; 3675 3676 if (io == NULL) 3677 return; 3678 3679 /* 3680 * May need to preserve linked list pointers at some point too. 3681 */ 3682 pool_ref = io->io_hdr.pool; 3683 3684 memset(io, 0, sizeof(*io)); 3685 3686 io->io_hdr.pool = pool_ref; 3687 } 3688 3689 /* 3690 * This routine is currently used for internal copies of ctl_ios that need 3691 * to persist for some reason after we've already returned status to the 3692 * FETD. (Thus the flag set.) 3693 * 3694 * XXX XXX 3695 * Note that this makes a blind copy of all fields in the ctl_io, except 3696 * for the pool reference. This includes any memory that has been 3697 * allocated! That memory will no longer be valid after done has been 3698 * called, so this would be VERY DANGEROUS for command that actually does 3699 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3700 * start and stop commands, which don't transfer any data, so this is not a 3701 * problem. If it is used for anything else, the caller would also need to 3702 * allocate data buffer space and this routine would need to be modified to 3703 * copy the data buffer(s) as well. 3704 */ 3705 void 3706 ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3707 { 3708 void *pool_ref; 3709 3710 if ((src == NULL) 3711 || (dest == NULL)) 3712 return; 3713 3714 /* 3715 * May need to preserve linked list pointers at some point too. 3716 */ 3717 pool_ref = dest->io_hdr.pool; 3718 3719 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3720 3721 dest->io_hdr.pool = pool_ref; 3722 /* 3723 * We need to know that this is an internal copy, and doesn't need 3724 * to get passed back to the FETD that allocated it. 3725 */ 3726 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3727 } 3728 3729 #ifdef NEEDTOPORT 3730 static void 3731 ctl_update_power_subpage(struct copan_power_subpage *page) 3732 { 3733 int num_luns, num_partitions, config_type; 3734 struct ctl_softc *softc; 3735 cs_BOOL_t aor_present, shelf_50pct_power; 3736 cs_raidset_personality_t rs_type; 3737 int max_active_luns; 3738 3739 softc = control_softc; 3740 3741 /* subtract out the processor LUN */ 3742 num_luns = softc->num_luns - 1; 3743 /* 3744 * Default to 7 LUNs active, which was the only number we allowed 3745 * in the past. 3746 */ 3747 max_active_luns = 7; 3748 3749 num_partitions = config_GetRsPartitionInfo(); 3750 config_type = config_GetConfigType(); 3751 shelf_50pct_power = config_GetShelfPowerMode(); 3752 aor_present = config_IsAorRsPresent(); 3753 3754 rs_type = ddb_GetRsRaidType(1); 3755 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3756 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3757 EPRINT(0, "Unsupported RS type %d!", rs_type); 3758 } 3759 3760 3761 page->total_luns = num_luns; 3762 3763 switch (config_type) { 3764 case 40: 3765 /* 3766 * In a 40 drive configuration, it doesn't matter what DC 3767 * cards we have, whether we have AOR enabled or not, 3768 * partitioning or not, or what type of RAIDset we have. 3769 * In that scenario, we can power up every LUN we present 3770 * to the user. 3771 */ 3772 max_active_luns = num_luns; 3773 3774 break; 3775 case 64: 3776 if (shelf_50pct_power == CS_FALSE) { 3777 /* 25% power */ 3778 if (aor_present == CS_TRUE) { 3779 if (rs_type == 3780 CS_RAIDSET_PERSONALITY_RAID5) { 3781 max_active_luns = 7; 3782 } else if (rs_type == 3783 CS_RAIDSET_PERSONALITY_RAID1){ 3784 max_active_luns = 14; 3785 } else { 3786 /* XXX KDM now what?? */ 3787 } 3788 } else { 3789 if (rs_type == 3790 CS_RAIDSET_PERSONALITY_RAID5) { 3791 max_active_luns = 8; 3792 } else if (rs_type == 3793 CS_RAIDSET_PERSONALITY_RAID1){ 3794 max_active_luns = 16; 3795 } else { 3796 /* XXX KDM now what?? */ 3797 } 3798 } 3799 } else { 3800 /* 50% power */ 3801 /* 3802 * With 50% power in a 64 drive configuration, we 3803 * can power all LUNs we present. 3804 */ 3805 max_active_luns = num_luns; 3806 } 3807 break; 3808 case 112: 3809 if (shelf_50pct_power == CS_FALSE) { 3810 /* 25% power */ 3811 if (aor_present == CS_TRUE) { 3812 if (rs_type == 3813 CS_RAIDSET_PERSONALITY_RAID5) { 3814 max_active_luns = 7; 3815 } else if (rs_type == 3816 CS_RAIDSET_PERSONALITY_RAID1){ 3817 max_active_luns = 14; 3818 } else { 3819 /* XXX KDM now what?? */ 3820 } 3821 } else { 3822 if (rs_type == 3823 CS_RAIDSET_PERSONALITY_RAID5) { 3824 max_active_luns = 8; 3825 } else if (rs_type == 3826 CS_RAIDSET_PERSONALITY_RAID1){ 3827 max_active_luns = 16; 3828 } else { 3829 /* XXX KDM now what?? */ 3830 } 3831 } 3832 } else { 3833 /* 50% power */ 3834 if (aor_present == CS_TRUE) { 3835 if (rs_type == 3836 CS_RAIDSET_PERSONALITY_RAID5) { 3837 max_active_luns = 14; 3838 } else if (rs_type == 3839 CS_RAIDSET_PERSONALITY_RAID1){ 3840 /* 3841 * We're assuming here that disk 3842 * caching is enabled, and so we're 3843 * able to power up half of each 3844 * LUN, and cache all writes. 3845 */ 3846 max_active_luns = num_luns; 3847 } else { 3848 /* XXX KDM now what?? */ 3849 } 3850 } else { 3851 if (rs_type == 3852 CS_RAIDSET_PERSONALITY_RAID5) { 3853 max_active_luns = 15; 3854 } else if (rs_type == 3855 CS_RAIDSET_PERSONALITY_RAID1){ 3856 max_active_luns = 30; 3857 } else { 3858 /* XXX KDM now what?? */ 3859 } 3860 } 3861 } 3862 break; 3863 default: 3864 /* 3865 * In this case, we have an unknown configuration, so we 3866 * just use the default from above. 3867 */ 3868 break; 3869 } 3870 3871 page->max_active_luns = max_active_luns; 3872 #if 0 3873 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3874 page->total_luns, page->max_active_luns); 3875 #endif 3876 } 3877 #endif /* NEEDTOPORT */ 3878 3879 /* 3880 * This routine could be used in the future to load default and/or saved 3881 * mode page parameters for a particuar lun. 3882 */ 3883 static int 3884 ctl_init_page_index(struct ctl_lun *lun) 3885 { 3886 int i; 3887 struct ctl_page_index *page_index; 3888 struct ctl_softc *softc; 3889 3890 memcpy(&lun->mode_pages.index, page_index_template, 3891 sizeof(page_index_template)); 3892 3893 softc = lun->ctl_softc; 3894 3895 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3896 3897 page_index = &lun->mode_pages.index[i]; 3898 /* 3899 * If this is a disk-only mode page, there's no point in 3900 * setting it up. For some pages, we have to have some 3901 * basic information about the disk in order to calculate the 3902 * mode page data. 3903 */ 3904 if ((lun->be_lun->lun_type != T_DIRECT) 3905 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3906 continue; 3907 3908 switch (page_index->page_code & SMPH_PC_MASK) { 3909 case SMS_FORMAT_DEVICE_PAGE: { 3910 struct scsi_format_page *format_page; 3911 3912 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3913 panic("subpage is incorrect!"); 3914 3915 /* 3916 * Sectors per track are set above. Bytes per 3917 * sector need to be set here on a per-LUN basis. 3918 */ 3919 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3920 &format_page_default, 3921 sizeof(format_page_default)); 3922 memcpy(&lun->mode_pages.format_page[ 3923 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3924 sizeof(format_page_changeable)); 3925 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3926 &format_page_default, 3927 sizeof(format_page_default)); 3928 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3929 &format_page_default, 3930 sizeof(format_page_default)); 3931 3932 format_page = &lun->mode_pages.format_page[ 3933 CTL_PAGE_CURRENT]; 3934 scsi_ulto2b(lun->be_lun->blocksize, 3935 format_page->bytes_per_sector); 3936 3937 format_page = &lun->mode_pages.format_page[ 3938 CTL_PAGE_DEFAULT]; 3939 scsi_ulto2b(lun->be_lun->blocksize, 3940 format_page->bytes_per_sector); 3941 3942 format_page = &lun->mode_pages.format_page[ 3943 CTL_PAGE_SAVED]; 3944 scsi_ulto2b(lun->be_lun->blocksize, 3945 format_page->bytes_per_sector); 3946 3947 page_index->page_data = 3948 (uint8_t *)lun->mode_pages.format_page; 3949 break; 3950 } 3951 case SMS_RIGID_DISK_PAGE: { 3952 struct scsi_rigid_disk_page *rigid_disk_page; 3953 uint32_t sectors_per_cylinder; 3954 uint64_t cylinders; 3955 #ifndef __XSCALE__ 3956 int shift; 3957 #endif /* !__XSCALE__ */ 3958 3959 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3960 panic("invalid subpage value %d", 3961 page_index->subpage); 3962 3963 /* 3964 * Rotation rate and sectors per track are set 3965 * above. We calculate the cylinders here based on 3966 * capacity. Due to the number of heads and 3967 * sectors per track we're using, smaller arrays 3968 * may turn out to have 0 cylinders. Linux and 3969 * FreeBSD don't pay attention to these mode pages 3970 * to figure out capacity, but Solaris does. It 3971 * seems to deal with 0 cylinders just fine, and 3972 * works out a fake geometry based on the capacity. 3973 */ 3974 memcpy(&lun->mode_pages.rigid_disk_page[ 3975 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3976 sizeof(rigid_disk_page_default)); 3977 memcpy(&lun->mode_pages.rigid_disk_page[ 3978 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3979 sizeof(rigid_disk_page_changeable)); 3980 memcpy(&lun->mode_pages.rigid_disk_page[ 3981 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3982 sizeof(rigid_disk_page_default)); 3983 memcpy(&lun->mode_pages.rigid_disk_page[ 3984 CTL_PAGE_SAVED], &rigid_disk_page_default, 3985 sizeof(rigid_disk_page_default)); 3986 3987 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3988 CTL_DEFAULT_HEADS; 3989 3990 /* 3991 * The divide method here will be more accurate, 3992 * probably, but results in floating point being 3993 * used in the kernel on i386 (__udivdi3()). On the 3994 * XScale, though, __udivdi3() is implemented in 3995 * software. 3996 * 3997 * The shift method for cylinder calculation is 3998 * accurate if sectors_per_cylinder is a power of 3999 * 2. Otherwise it might be slightly off -- you 4000 * might have a bit of a truncation problem. 4001 */ 4002 #ifdef __XSCALE__ 4003 cylinders = (lun->be_lun->maxlba + 1) / 4004 sectors_per_cylinder; 4005 #else 4006 for (shift = 31; shift > 0; shift--) { 4007 if (sectors_per_cylinder & (1 << shift)) 4008 break; 4009 } 4010 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4011 #endif 4012 4013 /* 4014 * We've basically got 3 bytes, or 24 bits for the 4015 * cylinder size in the mode page. If we're over, 4016 * just round down to 2^24. 4017 */ 4018 if (cylinders > 0xffffff) 4019 cylinders = 0xffffff; 4020 4021 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4022 CTL_PAGE_CURRENT]; 4023 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4024 4025 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4026 CTL_PAGE_DEFAULT]; 4027 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4028 4029 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4030 CTL_PAGE_SAVED]; 4031 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4032 4033 page_index->page_data = 4034 (uint8_t *)lun->mode_pages.rigid_disk_page; 4035 break; 4036 } 4037 case SMS_CACHING_PAGE: { 4038 4039 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4040 panic("invalid subpage value %d", 4041 page_index->subpage); 4042 /* 4043 * Defaults should be okay here, no calculations 4044 * needed. 4045 */ 4046 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4047 &caching_page_default, 4048 sizeof(caching_page_default)); 4049 memcpy(&lun->mode_pages.caching_page[ 4050 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4051 sizeof(caching_page_changeable)); 4052 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4053 &caching_page_default, 4054 sizeof(caching_page_default)); 4055 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4056 &caching_page_default, 4057 sizeof(caching_page_default)); 4058 page_index->page_data = 4059 (uint8_t *)lun->mode_pages.caching_page; 4060 break; 4061 } 4062 case SMS_CONTROL_MODE_PAGE: { 4063 4064 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4065 panic("invalid subpage value %d", 4066 page_index->subpage); 4067 4068 /* 4069 * Defaults should be okay here, no calculations 4070 * needed. 4071 */ 4072 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4073 &control_page_default, 4074 sizeof(control_page_default)); 4075 memcpy(&lun->mode_pages.control_page[ 4076 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4077 sizeof(control_page_changeable)); 4078 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4079 &control_page_default, 4080 sizeof(control_page_default)); 4081 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4082 &control_page_default, 4083 sizeof(control_page_default)); 4084 page_index->page_data = 4085 (uint8_t *)lun->mode_pages.control_page; 4086 break; 4087 4088 } 4089 case SMS_VENDOR_SPECIFIC_PAGE:{ 4090 switch (page_index->subpage) { 4091 case PWR_SUBPAGE_CODE: { 4092 struct copan_power_subpage *current_page, 4093 *saved_page; 4094 4095 memcpy(&lun->mode_pages.power_subpage[ 4096 CTL_PAGE_CURRENT], 4097 &power_page_default, 4098 sizeof(power_page_default)); 4099 memcpy(&lun->mode_pages.power_subpage[ 4100 CTL_PAGE_CHANGEABLE], 4101 &power_page_changeable, 4102 sizeof(power_page_changeable)); 4103 memcpy(&lun->mode_pages.power_subpage[ 4104 CTL_PAGE_DEFAULT], 4105 &power_page_default, 4106 sizeof(power_page_default)); 4107 memcpy(&lun->mode_pages.power_subpage[ 4108 CTL_PAGE_SAVED], 4109 &power_page_default, 4110 sizeof(power_page_default)); 4111 page_index->page_data = 4112 (uint8_t *)lun->mode_pages.power_subpage; 4113 4114 current_page = (struct copan_power_subpage *) 4115 (page_index->page_data + 4116 (page_index->page_len * 4117 CTL_PAGE_CURRENT)); 4118 saved_page = (struct copan_power_subpage *) 4119 (page_index->page_data + 4120 (page_index->page_len * 4121 CTL_PAGE_SAVED)); 4122 break; 4123 } 4124 case APS_SUBPAGE_CODE: { 4125 struct copan_aps_subpage *current_page, 4126 *saved_page; 4127 4128 // This gets set multiple times but 4129 // it should always be the same. It's 4130 // only done during init so who cares. 4131 index_to_aps_page = i; 4132 4133 memcpy(&lun->mode_pages.aps_subpage[ 4134 CTL_PAGE_CURRENT], 4135 &aps_page_default, 4136 sizeof(aps_page_default)); 4137 memcpy(&lun->mode_pages.aps_subpage[ 4138 CTL_PAGE_CHANGEABLE], 4139 &aps_page_changeable, 4140 sizeof(aps_page_changeable)); 4141 memcpy(&lun->mode_pages.aps_subpage[ 4142 CTL_PAGE_DEFAULT], 4143 &aps_page_default, 4144 sizeof(aps_page_default)); 4145 memcpy(&lun->mode_pages.aps_subpage[ 4146 CTL_PAGE_SAVED], 4147 &aps_page_default, 4148 sizeof(aps_page_default)); 4149 page_index->page_data = 4150 (uint8_t *)lun->mode_pages.aps_subpage; 4151 4152 current_page = (struct copan_aps_subpage *) 4153 (page_index->page_data + 4154 (page_index->page_len * 4155 CTL_PAGE_CURRENT)); 4156 saved_page = (struct copan_aps_subpage *) 4157 (page_index->page_data + 4158 (page_index->page_len * 4159 CTL_PAGE_SAVED)); 4160 break; 4161 } 4162 case DBGCNF_SUBPAGE_CODE: { 4163 struct copan_debugconf_subpage *current_page, 4164 *saved_page; 4165 4166 memcpy(&lun->mode_pages.debugconf_subpage[ 4167 CTL_PAGE_CURRENT], 4168 &debugconf_page_default, 4169 sizeof(debugconf_page_default)); 4170 memcpy(&lun->mode_pages.debugconf_subpage[ 4171 CTL_PAGE_CHANGEABLE], 4172 &debugconf_page_changeable, 4173 sizeof(debugconf_page_changeable)); 4174 memcpy(&lun->mode_pages.debugconf_subpage[ 4175 CTL_PAGE_DEFAULT], 4176 &debugconf_page_default, 4177 sizeof(debugconf_page_default)); 4178 memcpy(&lun->mode_pages.debugconf_subpage[ 4179 CTL_PAGE_SAVED], 4180 &debugconf_page_default, 4181 sizeof(debugconf_page_default)); 4182 page_index->page_data = 4183 (uint8_t *)lun->mode_pages.debugconf_subpage; 4184 4185 current_page = (struct copan_debugconf_subpage *) 4186 (page_index->page_data + 4187 (page_index->page_len * 4188 CTL_PAGE_CURRENT)); 4189 saved_page = (struct copan_debugconf_subpage *) 4190 (page_index->page_data + 4191 (page_index->page_len * 4192 CTL_PAGE_SAVED)); 4193 break; 4194 } 4195 default: 4196 panic("invalid subpage value %d", 4197 page_index->subpage); 4198 break; 4199 } 4200 break; 4201 } 4202 default: 4203 panic("invalid page value %d", 4204 page_index->page_code & SMPH_PC_MASK); 4205 break; 4206 } 4207 } 4208 4209 return (CTL_RETVAL_COMPLETE); 4210 } 4211 4212 /* 4213 * LUN allocation. 4214 * 4215 * Requirements: 4216 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4217 * wants us to allocate the LUN and he can block. 4218 * - ctl_softc is always set 4219 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4220 * 4221 * Returns 0 for success, non-zero (errno) for failure. 4222 */ 4223 static int 4224 ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4225 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4226 { 4227 struct ctl_lun *nlun, *lun; 4228 struct ctl_frontend *fe; 4229 int lun_number, i, lun_malloced; 4230 4231 if (be_lun == NULL) 4232 return (EINVAL); 4233 4234 /* 4235 * We currently only support Direct Access or Processor LUN types. 4236 */ 4237 switch (be_lun->lun_type) { 4238 case T_DIRECT: 4239 break; 4240 case T_PROCESSOR: 4241 break; 4242 case T_SEQUENTIAL: 4243 case T_CHANGER: 4244 default: 4245 be_lun->lun_config_status(be_lun->be_lun, 4246 CTL_LUN_CONFIG_FAILURE); 4247 break; 4248 } 4249 if (ctl_lun == NULL) { 4250 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4251 lun_malloced = 1; 4252 } else { 4253 lun_malloced = 0; 4254 lun = ctl_lun; 4255 } 4256 4257 memset(lun, 0, sizeof(*lun)); 4258 if (lun_malloced) 4259 lun->flags = CTL_LUN_MALLOCED; 4260 4261 mtx_lock(&ctl_softc->ctl_lock); 4262 /* 4263 * See if the caller requested a particular LUN number. If so, see 4264 * if it is available. Otherwise, allocate the first available LUN. 4265 */ 4266 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4267 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4268 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4269 mtx_unlock(&ctl_softc->ctl_lock); 4270 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4271 printf("ctl: requested LUN ID %d is higher " 4272 "than CTL_MAX_LUNS - 1 (%d)\n", 4273 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4274 } else { 4275 /* 4276 * XXX KDM return an error, or just assign 4277 * another LUN ID in this case?? 4278 */ 4279 printf("ctl: requested LUN ID %d is already " 4280 "in use\n", be_lun->req_lun_id); 4281 } 4282 if (lun->flags & CTL_LUN_MALLOCED) 4283 free(lun, M_CTL); 4284 be_lun->lun_config_status(be_lun->be_lun, 4285 CTL_LUN_CONFIG_FAILURE); 4286 return (ENOSPC); 4287 } 4288 lun_number = be_lun->req_lun_id; 4289 } else { 4290 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4291 if (lun_number == -1) { 4292 mtx_unlock(&ctl_softc->ctl_lock); 4293 printf("ctl: can't allocate LUN on target %ju, out of " 4294 "LUNs\n", (uintmax_t)target_id.id); 4295 if (lun->flags & CTL_LUN_MALLOCED) 4296 free(lun, M_CTL); 4297 be_lun->lun_config_status(be_lun->be_lun, 4298 CTL_LUN_CONFIG_FAILURE); 4299 return (ENOSPC); 4300 } 4301 } 4302 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4303 4304 lun->target = target_id; 4305 lun->lun = lun_number; 4306 lun->be_lun = be_lun; 4307 /* 4308 * The processor LUN is always enabled. Disk LUNs come on line 4309 * disabled, and must be enabled by the backend. 4310 */ 4311 lun->flags |= CTL_LUN_DISABLED; 4312 lun->backend = be_lun->be; 4313 be_lun->ctl_lun = lun; 4314 be_lun->lun_id = lun_number; 4315 atomic_add_int(&be_lun->be->num_luns, 1); 4316 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4317 lun->flags |= CTL_LUN_STOPPED; 4318 4319 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4320 lun->flags |= CTL_LUN_INOPERABLE; 4321 4322 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4323 lun->flags |= CTL_LUN_PRIMARY_SC; 4324 4325 lun->ctl_softc = ctl_softc; 4326 TAILQ_INIT(&lun->ooa_queue); 4327 TAILQ_INIT(&lun->blocked_queue); 4328 STAILQ_INIT(&lun->error_list); 4329 4330 /* 4331 * Initialize the mode page index. 4332 */ 4333 ctl_init_page_index(lun); 4334 4335 /* 4336 * Set the poweron UA for all initiators on this LUN only. 4337 */ 4338 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4339 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4340 4341 /* 4342 * Now, before we insert this lun on the lun list, set the lun 4343 * inventory changed UA for all other luns. 4344 */ 4345 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4346 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4347 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4348 } 4349 } 4350 4351 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4352 4353 ctl_softc->ctl_luns[lun_number] = lun; 4354 4355 ctl_softc->num_luns++; 4356 4357 /* Setup statistics gathering */ 4358 lun->stats.device_type = be_lun->lun_type; 4359 lun->stats.lun_number = lun_number; 4360 if (lun->stats.device_type == T_DIRECT) 4361 lun->stats.blocksize = be_lun->blocksize; 4362 else 4363 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4364 for (i = 0;i < CTL_MAX_PORTS;i++) 4365 lun->stats.ports[i].targ_port = i; 4366 4367 mtx_unlock(&ctl_softc->ctl_lock); 4368 4369 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4370 4371 /* 4372 * Run through each registered FETD and bring it online if it isn't 4373 * already. Enable the target ID if it hasn't been enabled, and 4374 * enable this particular LUN. 4375 */ 4376 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4377 int retval; 4378 4379 /* 4380 * XXX KDM this only works for ONE TARGET ID. We'll need 4381 * to do things differently if we go to a multiple target 4382 * ID scheme. 4383 */ 4384 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4385 4386 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4387 if (retval != 0) { 4388 printf("ctl_alloc_lun: FETD %s port %d " 4389 "returned error %d for targ_enable on " 4390 "target %ju\n", fe->port_name, 4391 fe->targ_port, retval, 4392 (uintmax_t)target_id.id); 4393 } else 4394 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4395 } 4396 4397 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4398 if (retval != 0) { 4399 printf("ctl_alloc_lun: FETD %s port %d returned error " 4400 "%d for lun_enable on target %ju lun %d\n", 4401 fe->port_name, fe->targ_port, retval, 4402 (uintmax_t)target_id.id, lun_number); 4403 } else 4404 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4405 } 4406 return (0); 4407 } 4408 4409 /* 4410 * Delete a LUN. 4411 * Assumptions: 4412 * - LUN has already been marked invalid and any pending I/O has been taken 4413 * care of. 4414 */ 4415 static int 4416 ctl_free_lun(struct ctl_lun *lun) 4417 { 4418 struct ctl_softc *softc; 4419 #if 0 4420 struct ctl_frontend *fe; 4421 #endif 4422 struct ctl_lun *nlun; 4423 union ctl_io *io, *next_io; 4424 int i; 4425 4426 softc = lun->ctl_softc; 4427 4428 mtx_assert(&softc->ctl_lock, MA_OWNED); 4429 4430 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4431 4432 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4433 4434 softc->ctl_luns[lun->lun] = NULL; 4435 4436 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4437 printf("ctl_free_lun: aieee!! freeing a LUN with " 4438 "outstanding I/O!!\n"); 4439 } 4440 4441 /* 4442 * If we have anything pending on the RtR queue, remove it. 4443 */ 4444 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4445 io = next_io) { 4446 uint32_t targ_lun; 4447 4448 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4449 targ_lun = io->io_hdr.nexus.targ_lun; 4450 if (io->io_hdr.nexus.lun_map_fn != NULL) 4451 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 4452 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4453 && (targ_lun == lun->lun)) 4454 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4455 ctl_io_hdr, links); 4456 } 4457 4458 /* 4459 * Then remove everything from the blocked queue. 4460 */ 4461 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4462 io = next_io) { 4463 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4464 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4465 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4466 } 4467 4468 /* 4469 * Now clear out the OOA queue, and free all the I/O. 4470 * XXX KDM should we notify the FETD here? We probably need to 4471 * quiesce the LUN before deleting it. 4472 */ 4473 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4474 io = next_io) { 4475 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4476 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4477 ctl_free_io_internal(io, /*have_lock*/ 1); 4478 } 4479 4480 softc->num_luns--; 4481 4482 /* 4483 * XXX KDM this scheme only works for a single target/multiple LUN 4484 * setup. It needs to be revamped for a multiple target scheme. 4485 * 4486 * XXX KDM this results in fe->lun_disable() getting called twice, 4487 * once when ctl_disable_lun() is called, and a second time here. 4488 * We really need to re-think the LUN disable semantics. There 4489 * should probably be several steps/levels to LUN removal: 4490 * - disable 4491 * - invalidate 4492 * - free 4493 * 4494 * Right now we only have a disable method when communicating to 4495 * the front end ports, at least for individual LUNs. 4496 */ 4497 #if 0 4498 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4499 int retval; 4500 4501 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4502 lun->lun); 4503 if (retval != 0) { 4504 printf("ctl_free_lun: FETD %s port %d returned error " 4505 "%d for lun_disable on target %ju lun %jd\n", 4506 fe->port_name, fe->targ_port, retval, 4507 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4508 } 4509 4510 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4511 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4512 4513 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4514 if (retval != 0) { 4515 printf("ctl_free_lun: FETD %s port %d " 4516 "returned error %d for targ_disable on " 4517 "target %ju\n", fe->port_name, 4518 fe->targ_port, retval, 4519 (uintmax_t)lun->target.id); 4520 } else 4521 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4522 4523 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4524 continue; 4525 4526 #if 0 4527 fe->port_offline(fe->onoff_arg); 4528 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4529 #endif 4530 } 4531 } 4532 #endif 4533 4534 /* 4535 * Tell the backend to free resources, if this LUN has a backend. 4536 */ 4537 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4538 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4539 4540 if (lun->flags & CTL_LUN_MALLOCED) 4541 free(lun, M_CTL); 4542 4543 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4544 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4545 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4546 } 4547 } 4548 4549 return (0); 4550 } 4551 4552 static void 4553 ctl_create_lun(struct ctl_be_lun *be_lun) 4554 { 4555 struct ctl_softc *ctl_softc; 4556 4557 ctl_softc = control_softc; 4558 4559 /* 4560 * ctl_alloc_lun() should handle all potential failure cases. 4561 */ 4562 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4563 } 4564 4565 int 4566 ctl_add_lun(struct ctl_be_lun *be_lun) 4567 { 4568 struct ctl_softc *ctl_softc; 4569 4570 ctl_softc = control_softc; 4571 4572 mtx_lock(&ctl_softc->ctl_lock); 4573 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4574 mtx_unlock(&ctl_softc->ctl_lock); 4575 4576 ctl_wakeup_thread(); 4577 4578 return (0); 4579 } 4580 4581 int 4582 ctl_enable_lun(struct ctl_be_lun *be_lun) 4583 { 4584 struct ctl_softc *ctl_softc; 4585 struct ctl_frontend *fe, *nfe; 4586 struct ctl_lun *lun; 4587 int retval; 4588 4589 ctl_softc = control_softc; 4590 4591 lun = (struct ctl_lun *)be_lun->ctl_lun; 4592 4593 mtx_lock(&ctl_softc->ctl_lock); 4594 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4595 /* 4596 * eh? Why did we get called if the LUN is already 4597 * enabled? 4598 */ 4599 mtx_unlock(&ctl_softc->ctl_lock); 4600 return (0); 4601 } 4602 lun->flags &= ~CTL_LUN_DISABLED; 4603 4604 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4605 nfe = STAILQ_NEXT(fe, links); 4606 4607 /* 4608 * Drop the lock while we call the FETD's enable routine. 4609 * This can lead to a callback into CTL (at least in the 4610 * case of the internal initiator frontend. 4611 */ 4612 mtx_unlock(&ctl_softc->ctl_lock); 4613 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4614 mtx_lock(&ctl_softc->ctl_lock); 4615 if (retval != 0) { 4616 printf("%s: FETD %s port %d returned error " 4617 "%d for lun_enable on target %ju lun %jd\n", 4618 __func__, fe->port_name, fe->targ_port, retval, 4619 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4620 } 4621 #if 0 4622 else { 4623 /* NOTE: TODO: why does lun enable affect port status? */ 4624 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4625 } 4626 #endif 4627 } 4628 4629 mtx_unlock(&ctl_softc->ctl_lock); 4630 4631 return (0); 4632 } 4633 4634 int 4635 ctl_disable_lun(struct ctl_be_lun *be_lun) 4636 { 4637 struct ctl_softc *ctl_softc; 4638 struct ctl_frontend *fe; 4639 struct ctl_lun *lun; 4640 int retval; 4641 4642 ctl_softc = control_softc; 4643 4644 lun = (struct ctl_lun *)be_lun->ctl_lun; 4645 4646 mtx_lock(&ctl_softc->ctl_lock); 4647 4648 if (lun->flags & CTL_LUN_DISABLED) { 4649 mtx_unlock(&ctl_softc->ctl_lock); 4650 return (0); 4651 } 4652 lun->flags |= CTL_LUN_DISABLED; 4653 4654 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4655 mtx_unlock(&ctl_softc->ctl_lock); 4656 /* 4657 * Drop the lock before we call the frontend's disable 4658 * routine, to avoid lock order reversals. 4659 * 4660 * XXX KDM what happens if the frontend list changes while 4661 * we're traversing it? It's unlikely, but should be handled. 4662 */ 4663 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4664 lun->lun); 4665 mtx_lock(&ctl_softc->ctl_lock); 4666 if (retval != 0) { 4667 printf("ctl_alloc_lun: FETD %s port %d returned error " 4668 "%d for lun_disable on target %ju lun %jd\n", 4669 fe->port_name, fe->targ_port, retval, 4670 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4671 } 4672 } 4673 4674 mtx_unlock(&ctl_softc->ctl_lock); 4675 4676 return (0); 4677 } 4678 4679 int 4680 ctl_start_lun(struct ctl_be_lun *be_lun) 4681 { 4682 struct ctl_softc *ctl_softc; 4683 struct ctl_lun *lun; 4684 4685 ctl_softc = control_softc; 4686 4687 lun = (struct ctl_lun *)be_lun->ctl_lun; 4688 4689 mtx_lock(&ctl_softc->ctl_lock); 4690 lun->flags &= ~CTL_LUN_STOPPED; 4691 mtx_unlock(&ctl_softc->ctl_lock); 4692 4693 return (0); 4694 } 4695 4696 int 4697 ctl_stop_lun(struct ctl_be_lun *be_lun) 4698 { 4699 struct ctl_softc *ctl_softc; 4700 struct ctl_lun *lun; 4701 4702 ctl_softc = control_softc; 4703 4704 lun = (struct ctl_lun *)be_lun->ctl_lun; 4705 4706 mtx_lock(&ctl_softc->ctl_lock); 4707 lun->flags |= CTL_LUN_STOPPED; 4708 mtx_unlock(&ctl_softc->ctl_lock); 4709 4710 return (0); 4711 } 4712 4713 int 4714 ctl_lun_offline(struct ctl_be_lun *be_lun) 4715 { 4716 struct ctl_softc *ctl_softc; 4717 struct ctl_lun *lun; 4718 4719 ctl_softc = control_softc; 4720 4721 lun = (struct ctl_lun *)be_lun->ctl_lun; 4722 4723 mtx_lock(&ctl_softc->ctl_lock); 4724 lun->flags |= CTL_LUN_OFFLINE; 4725 mtx_unlock(&ctl_softc->ctl_lock); 4726 4727 return (0); 4728 } 4729 4730 int 4731 ctl_lun_online(struct ctl_be_lun *be_lun) 4732 { 4733 struct ctl_softc *ctl_softc; 4734 struct ctl_lun *lun; 4735 4736 ctl_softc = control_softc; 4737 4738 lun = (struct ctl_lun *)be_lun->ctl_lun; 4739 4740 mtx_lock(&ctl_softc->ctl_lock); 4741 lun->flags &= ~CTL_LUN_OFFLINE; 4742 mtx_unlock(&ctl_softc->ctl_lock); 4743 4744 return (0); 4745 } 4746 4747 int 4748 ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4749 { 4750 struct ctl_softc *ctl_softc; 4751 struct ctl_lun *lun; 4752 4753 ctl_softc = control_softc; 4754 4755 lun = (struct ctl_lun *)be_lun->ctl_lun; 4756 4757 mtx_lock(&ctl_softc->ctl_lock); 4758 4759 /* 4760 * The LUN needs to be disabled before it can be marked invalid. 4761 */ 4762 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4763 mtx_unlock(&ctl_softc->ctl_lock); 4764 return (-1); 4765 } 4766 /* 4767 * Mark the LUN invalid. 4768 */ 4769 lun->flags |= CTL_LUN_INVALID; 4770 4771 /* 4772 * If there is nothing in the OOA queue, go ahead and free the LUN. 4773 * If we have something in the OOA queue, we'll free it when the 4774 * last I/O completes. 4775 */ 4776 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4777 ctl_free_lun(lun); 4778 mtx_unlock(&ctl_softc->ctl_lock); 4779 4780 return (0); 4781 } 4782 4783 int 4784 ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4785 { 4786 struct ctl_softc *ctl_softc; 4787 struct ctl_lun *lun; 4788 4789 ctl_softc = control_softc; 4790 lun = (struct ctl_lun *)be_lun->ctl_lun; 4791 4792 mtx_lock(&ctl_softc->ctl_lock); 4793 lun->flags |= CTL_LUN_INOPERABLE; 4794 mtx_unlock(&ctl_softc->ctl_lock); 4795 4796 return (0); 4797 } 4798 4799 int 4800 ctl_lun_operable(struct ctl_be_lun *be_lun) 4801 { 4802 struct ctl_softc *ctl_softc; 4803 struct ctl_lun *lun; 4804 4805 ctl_softc = control_softc; 4806 lun = (struct ctl_lun *)be_lun->ctl_lun; 4807 4808 mtx_lock(&ctl_softc->ctl_lock); 4809 lun->flags &= ~CTL_LUN_INOPERABLE; 4810 mtx_unlock(&ctl_softc->ctl_lock); 4811 4812 return (0); 4813 } 4814 4815 int 4816 ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4817 int lock) 4818 { 4819 struct ctl_softc *softc; 4820 struct ctl_lun *lun; 4821 struct copan_aps_subpage *current_sp; 4822 struct ctl_page_index *page_index; 4823 int i; 4824 4825 softc = control_softc; 4826 4827 mtx_lock(&softc->ctl_lock); 4828 4829 lun = (struct ctl_lun *)be_lun->ctl_lun; 4830 4831 page_index = NULL; 4832 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4833 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4834 APS_PAGE_CODE) 4835 continue; 4836 4837 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4838 continue; 4839 page_index = &lun->mode_pages.index[i]; 4840 } 4841 4842 if (page_index == NULL) { 4843 mtx_unlock(&softc->ctl_lock); 4844 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4845 (uintmax_t)lun->lun); 4846 return (1); 4847 } 4848 #if 0 4849 if ((softc->aps_locked_lun != 0) 4850 && (softc->aps_locked_lun != lun->lun)) { 4851 printf("%s: attempt to lock LUN %llu when %llu is already " 4852 "locked\n"); 4853 mtx_unlock(&softc->ctl_lock); 4854 return (1); 4855 } 4856 #endif 4857 4858 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4859 (page_index->page_len * CTL_PAGE_CURRENT)); 4860 4861 if (lock != 0) { 4862 current_sp->lock_active = APS_LOCK_ACTIVE; 4863 softc->aps_locked_lun = lun->lun; 4864 } else { 4865 current_sp->lock_active = 0; 4866 softc->aps_locked_lun = 0; 4867 } 4868 4869 4870 /* 4871 * If we're in HA mode, try to send the lock message to the other 4872 * side. 4873 */ 4874 if (ctl_is_single == 0) { 4875 int isc_retval; 4876 union ctl_ha_msg lock_msg; 4877 4878 lock_msg.hdr.nexus = *nexus; 4879 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4880 if (lock != 0) 4881 lock_msg.aps.lock_flag = 1; 4882 else 4883 lock_msg.aps.lock_flag = 0; 4884 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4885 sizeof(lock_msg), 0); 4886 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4887 printf("%s: APS (lock=%d) error returned from " 4888 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4889 mtx_unlock(&softc->ctl_lock); 4890 return (1); 4891 } 4892 } 4893 4894 mtx_unlock(&softc->ctl_lock); 4895 4896 return (0); 4897 } 4898 4899 void 4900 ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4901 { 4902 struct ctl_lun *lun; 4903 struct ctl_softc *softc; 4904 int i; 4905 4906 softc = control_softc; 4907 4908 mtx_lock(&softc->ctl_lock); 4909 4910 lun = (struct ctl_lun *)be_lun->ctl_lun; 4911 4912 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4913 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4914 4915 mtx_unlock(&softc->ctl_lock); 4916 } 4917 4918 /* 4919 * Backend "memory move is complete" callback for requests that never 4920 * make it down to say RAIDCore's configuration code. 4921 */ 4922 int 4923 ctl_config_move_done(union ctl_io *io) 4924 { 4925 int retval; 4926 4927 retval = CTL_RETVAL_COMPLETE; 4928 4929 4930 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4931 /* 4932 * XXX KDM this shouldn't happen, but what if it does? 4933 */ 4934 if (io->io_hdr.io_type != CTL_IO_SCSI) 4935 panic("I/O type isn't CTL_IO_SCSI!"); 4936 4937 if ((io->io_hdr.port_status == 0) 4938 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4939 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4940 io->io_hdr.status = CTL_SUCCESS; 4941 else if ((io->io_hdr.port_status != 0) 4942 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4943 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4944 /* 4945 * For hardware error sense keys, the sense key 4946 * specific value is defined to be a retry count, 4947 * but we use it to pass back an internal FETD 4948 * error code. XXX KDM Hopefully the FETD is only 4949 * using 16 bits for an error code, since that's 4950 * all the space we have in the sks field. 4951 */ 4952 ctl_set_internal_failure(&io->scsiio, 4953 /*sks_valid*/ 1, 4954 /*retry_count*/ 4955 io->io_hdr.port_status); 4956 free(io->scsiio.kern_data_ptr, M_CTL); 4957 ctl_done(io); 4958 goto bailout; 4959 } 4960 4961 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4962 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4963 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4964 /* 4965 * XXX KDM just assuming a single pointer here, and not a 4966 * S/G list. If we start using S/G lists for config data, 4967 * we'll need to know how to clean them up here as well. 4968 */ 4969 free(io->scsiio.kern_data_ptr, M_CTL); 4970 /* Hopefully the user has already set the status... */ 4971 ctl_done(io); 4972 } else { 4973 /* 4974 * XXX KDM now we need to continue data movement. Some 4975 * options: 4976 * - call ctl_scsiio() again? We don't do this for data 4977 * writes, because for those at least we know ahead of 4978 * time where the write will go and how long it is. For 4979 * config writes, though, that information is largely 4980 * contained within the write itself, thus we need to 4981 * parse out the data again. 4982 * 4983 * - Call some other function once the data is in? 4984 */ 4985 4986 /* 4987 * XXX KDM call ctl_scsiio() again for now, and check flag 4988 * bits to see whether we're allocated or not. 4989 */ 4990 retval = ctl_scsiio(&io->scsiio); 4991 } 4992 bailout: 4993 return (retval); 4994 } 4995 4996 /* 4997 * This gets called by a backend driver when it is done with a 4998 * configuration write. 4999 */ 5000 void 5001 ctl_config_write_done(union ctl_io *io) 5002 { 5003 /* 5004 * If the IO_CONT flag is set, we need to call the supplied 5005 * function to continue processing the I/O, instead of completing 5006 * the I/O just yet. 5007 * 5008 * If there is an error, though, we don't want to keep processing. 5009 * Instead, just send status back to the initiator. 5010 */ 5011 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5012 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5013 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5014 io->scsiio.io_cont(io); 5015 return; 5016 } 5017 /* 5018 * Since a configuration write can be done for commands that actually 5019 * have data allocated, like write buffer, and commands that have 5020 * no data, like start/stop unit, we need to check here. 5021 */ 5022 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5023 free(io->scsiio.kern_data_ptr, M_CTL); 5024 ctl_done(io); 5025 } 5026 5027 /* 5028 * SCSI release command. 5029 */ 5030 int 5031 ctl_scsi_release(struct ctl_scsiio *ctsio) 5032 { 5033 int length, longid, thirdparty_id, resv_id; 5034 struct ctl_softc *ctl_softc; 5035 struct ctl_lun *lun; 5036 5037 length = 0; 5038 resv_id = 0; 5039 5040 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5041 5042 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5043 ctl_softc = control_softc; 5044 5045 switch (ctsio->cdb[0]) { 5046 case RELEASE: { 5047 struct scsi_release *cdb; 5048 5049 cdb = (struct scsi_release *)ctsio->cdb; 5050 if ((cdb->byte2 & 0x1f) != 0) { 5051 ctl_set_invalid_field(ctsio, 5052 /*sks_valid*/ 1, 5053 /*command*/ 1, 5054 /*field*/ 1, 5055 /*bit_valid*/ 0, 5056 /*bit*/ 0); 5057 ctl_done((union ctl_io *)ctsio); 5058 return (CTL_RETVAL_COMPLETE); 5059 } 5060 break; 5061 } 5062 case RELEASE_10: { 5063 struct scsi_release_10 *cdb; 5064 5065 cdb = (struct scsi_release_10 *)ctsio->cdb; 5066 5067 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5068 ctl_set_invalid_field(ctsio, 5069 /*sks_valid*/ 1, 5070 /*command*/ 1, 5071 /*field*/ 1, 5072 /*bit_valid*/ 1, 5073 /*bit*/ 0); 5074 ctl_done((union ctl_io *)ctsio); 5075 return (CTL_RETVAL_COMPLETE); 5076 5077 } 5078 5079 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5080 ctl_set_invalid_field(ctsio, 5081 /*sks_valid*/ 1, 5082 /*command*/ 1, 5083 /*field*/ 1, 5084 /*bit_valid*/ 1, 5085 /*bit*/ 4); 5086 ctl_done((union ctl_io *)ctsio); 5087 return (CTL_RETVAL_COMPLETE); 5088 } 5089 5090 if (cdb->byte2 & SR10_LONGID) 5091 longid = 1; 5092 else 5093 thirdparty_id = cdb->thirdparty_id; 5094 5095 resv_id = cdb->resv_id; 5096 length = scsi_2btoul(cdb->length); 5097 break; 5098 } 5099 } 5100 5101 5102 /* 5103 * XXX KDM right now, we only support LUN reservation. We don't 5104 * support 3rd party reservations, or extent reservations, which 5105 * might actually need the parameter list. If we've gotten this 5106 * far, we've got a LUN reservation. Anything else got kicked out 5107 * above. So, according to SPC, ignore the length. 5108 */ 5109 length = 0; 5110 5111 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5112 && (length > 0)) { 5113 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5114 ctsio->kern_data_len = length; 5115 ctsio->kern_total_len = length; 5116 ctsio->kern_data_resid = 0; 5117 ctsio->kern_rel_offset = 0; 5118 ctsio->kern_sg_entries = 0; 5119 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5120 ctsio->be_move_done = ctl_config_move_done; 5121 ctl_datamove((union ctl_io *)ctsio); 5122 5123 return (CTL_RETVAL_COMPLETE); 5124 } 5125 5126 if (length > 0) 5127 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5128 5129 mtx_lock(&ctl_softc->ctl_lock); 5130 5131 /* 5132 * According to SPC, it is not an error for an intiator to attempt 5133 * to release a reservation on a LUN that isn't reserved, or that 5134 * is reserved by another initiator. The reservation can only be 5135 * released, though, by the initiator who made it or by one of 5136 * several reset type events. 5137 */ 5138 if (lun->flags & CTL_LUN_RESERVED) { 5139 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5140 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5141 && (ctsio->io_hdr.nexus.targ_target.id == 5142 lun->rsv_nexus.targ_target.id)) { 5143 lun->flags &= ~CTL_LUN_RESERVED; 5144 } 5145 } 5146 5147 ctsio->scsi_status = SCSI_STATUS_OK; 5148 ctsio->io_hdr.status = CTL_SUCCESS; 5149 5150 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5151 free(ctsio->kern_data_ptr, M_CTL); 5152 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5153 } 5154 5155 mtx_unlock(&ctl_softc->ctl_lock); 5156 5157 ctl_done((union ctl_io *)ctsio); 5158 return (CTL_RETVAL_COMPLETE); 5159 } 5160 5161 int 5162 ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5163 { 5164 int extent, thirdparty, longid; 5165 int resv_id, length; 5166 uint64_t thirdparty_id; 5167 struct ctl_softc *ctl_softc; 5168 struct ctl_lun *lun; 5169 5170 extent = 0; 5171 thirdparty = 0; 5172 longid = 0; 5173 resv_id = 0; 5174 length = 0; 5175 thirdparty_id = 0; 5176 5177 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5178 5179 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5180 ctl_softc = control_softc; 5181 5182 switch (ctsio->cdb[0]) { 5183 case RESERVE: { 5184 struct scsi_reserve *cdb; 5185 5186 cdb = (struct scsi_reserve *)ctsio->cdb; 5187 if ((cdb->byte2 & 0x1f) != 0) { 5188 ctl_set_invalid_field(ctsio, 5189 /*sks_valid*/ 1, 5190 /*command*/ 1, 5191 /*field*/ 1, 5192 /*bit_valid*/ 0, 5193 /*bit*/ 0); 5194 ctl_done((union ctl_io *)ctsio); 5195 return (CTL_RETVAL_COMPLETE); 5196 } 5197 resv_id = cdb->resv_id; 5198 length = scsi_2btoul(cdb->length); 5199 break; 5200 } 5201 case RESERVE_10: { 5202 struct scsi_reserve_10 *cdb; 5203 5204 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5205 5206 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5207 ctl_set_invalid_field(ctsio, 5208 /*sks_valid*/ 1, 5209 /*command*/ 1, 5210 /*field*/ 1, 5211 /*bit_valid*/ 1, 5212 /*bit*/ 0); 5213 ctl_done((union ctl_io *)ctsio); 5214 return (CTL_RETVAL_COMPLETE); 5215 } 5216 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5217 ctl_set_invalid_field(ctsio, 5218 /*sks_valid*/ 1, 5219 /*command*/ 1, 5220 /*field*/ 1, 5221 /*bit_valid*/ 1, 5222 /*bit*/ 4); 5223 ctl_done((union ctl_io *)ctsio); 5224 return (CTL_RETVAL_COMPLETE); 5225 } 5226 if (cdb->byte2 & SR10_LONGID) 5227 longid = 1; 5228 else 5229 thirdparty_id = cdb->thirdparty_id; 5230 5231 resv_id = cdb->resv_id; 5232 length = scsi_2btoul(cdb->length); 5233 break; 5234 } 5235 } 5236 5237 /* 5238 * XXX KDM right now, we only support LUN reservation. We don't 5239 * support 3rd party reservations, or extent reservations, which 5240 * might actually need the parameter list. If we've gotten this 5241 * far, we've got a LUN reservation. Anything else got kicked out 5242 * above. So, according to SPC, ignore the length. 5243 */ 5244 length = 0; 5245 5246 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5247 && (length > 0)) { 5248 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5249 ctsio->kern_data_len = length; 5250 ctsio->kern_total_len = length; 5251 ctsio->kern_data_resid = 0; 5252 ctsio->kern_rel_offset = 0; 5253 ctsio->kern_sg_entries = 0; 5254 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5255 ctsio->be_move_done = ctl_config_move_done; 5256 ctl_datamove((union ctl_io *)ctsio); 5257 5258 return (CTL_RETVAL_COMPLETE); 5259 } 5260 5261 if (length > 0) 5262 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5263 5264 mtx_lock(&ctl_softc->ctl_lock); 5265 if (lun->flags & CTL_LUN_RESERVED) { 5266 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5267 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5268 || (ctsio->io_hdr.nexus.targ_target.id != 5269 lun->rsv_nexus.targ_target.id)) { 5270 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5271 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5272 goto bailout; 5273 } 5274 } 5275 5276 lun->flags |= CTL_LUN_RESERVED; 5277 lun->rsv_nexus = ctsio->io_hdr.nexus; 5278 5279 ctsio->scsi_status = SCSI_STATUS_OK; 5280 ctsio->io_hdr.status = CTL_SUCCESS; 5281 5282 bailout: 5283 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5284 free(ctsio->kern_data_ptr, M_CTL); 5285 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5286 } 5287 5288 mtx_unlock(&ctl_softc->ctl_lock); 5289 5290 ctl_done((union ctl_io *)ctsio); 5291 return (CTL_RETVAL_COMPLETE); 5292 } 5293 5294 int 5295 ctl_start_stop(struct ctl_scsiio *ctsio) 5296 { 5297 struct scsi_start_stop_unit *cdb; 5298 struct ctl_lun *lun; 5299 struct ctl_softc *ctl_softc; 5300 int retval; 5301 5302 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5303 5304 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5305 ctl_softc = control_softc; 5306 retval = 0; 5307 5308 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5309 5310 /* 5311 * XXX KDM 5312 * We don't support the immediate bit on a stop unit. In order to 5313 * do that, we would need to code up a way to know that a stop is 5314 * pending, and hold off any new commands until it completes, one 5315 * way or another. Then we could accept or reject those commands 5316 * depending on its status. We would almost need to do the reverse 5317 * of what we do below for an immediate start -- return the copy of 5318 * the ctl_io to the FETD with status to send to the host (and to 5319 * free the copy!) and then free the original I/O once the stop 5320 * actually completes. That way, the OOA queue mechanism can work 5321 * to block commands that shouldn't proceed. Another alternative 5322 * would be to put the copy in the queue in place of the original, 5323 * and return the original back to the caller. That could be 5324 * slightly safer.. 5325 */ 5326 if ((cdb->byte2 & SSS_IMMED) 5327 && ((cdb->how & SSS_START) == 0)) { 5328 ctl_set_invalid_field(ctsio, 5329 /*sks_valid*/ 1, 5330 /*command*/ 1, 5331 /*field*/ 1, 5332 /*bit_valid*/ 1, 5333 /*bit*/ 0); 5334 ctl_done((union ctl_io *)ctsio); 5335 return (CTL_RETVAL_COMPLETE); 5336 } 5337 5338 /* 5339 * We don't support the power conditions field. We need to check 5340 * this prior to checking the load/eject and start/stop bits. 5341 */ 5342 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5343 ctl_set_invalid_field(ctsio, 5344 /*sks_valid*/ 1, 5345 /*command*/ 1, 5346 /*field*/ 4, 5347 /*bit_valid*/ 1, 5348 /*bit*/ 4); 5349 ctl_done((union ctl_io *)ctsio); 5350 return (CTL_RETVAL_COMPLETE); 5351 } 5352 5353 /* 5354 * Media isn't removable, so we can't load or eject it. 5355 */ 5356 if ((cdb->how & SSS_LOEJ) != 0) { 5357 ctl_set_invalid_field(ctsio, 5358 /*sks_valid*/ 1, 5359 /*command*/ 1, 5360 /*field*/ 4, 5361 /*bit_valid*/ 1, 5362 /*bit*/ 1); 5363 ctl_done((union ctl_io *)ctsio); 5364 return (CTL_RETVAL_COMPLETE); 5365 } 5366 5367 if ((lun->flags & CTL_LUN_PR_RESERVED) 5368 && ((cdb->how & SSS_START)==0)) { 5369 uint32_t residx; 5370 5371 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5372 if (!lun->per_res[residx].registered 5373 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5374 5375 ctl_set_reservation_conflict(ctsio); 5376 ctl_done((union ctl_io *)ctsio); 5377 return (CTL_RETVAL_COMPLETE); 5378 } 5379 } 5380 5381 /* 5382 * If there is no backend on this device, we can't start or stop 5383 * it. In theory we shouldn't get any start/stop commands in the 5384 * first place at this level if the LUN doesn't have a backend. 5385 * That should get stopped by the command decode code. 5386 */ 5387 if (lun->backend == NULL) { 5388 ctl_set_invalid_opcode(ctsio); 5389 ctl_done((union ctl_io *)ctsio); 5390 return (CTL_RETVAL_COMPLETE); 5391 } 5392 5393 /* 5394 * XXX KDM Copan-specific offline behavior. 5395 * Figure out a reasonable way to port this? 5396 */ 5397 #ifdef NEEDTOPORT 5398 mtx_lock(&ctl_softc->ctl_lock); 5399 5400 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5401 && (lun->flags & CTL_LUN_OFFLINE)) { 5402 /* 5403 * If the LUN is offline, and the on/offline bit isn't set, 5404 * reject the start or stop. Otherwise, let it through. 5405 */ 5406 mtx_unlock(&ctl_softc->ctl_lock); 5407 ctl_set_lun_not_ready(ctsio); 5408 ctl_done((union ctl_io *)ctsio); 5409 } else { 5410 mtx_unlock(&ctl_softc->ctl_lock); 5411 #endif /* NEEDTOPORT */ 5412 /* 5413 * This could be a start or a stop when we're online, 5414 * or a stop/offline or start/online. A start or stop when 5415 * we're offline is covered in the case above. 5416 */ 5417 /* 5418 * In the non-immediate case, we send the request to 5419 * the backend and return status to the user when 5420 * it is done. 5421 * 5422 * In the immediate case, we allocate a new ctl_io 5423 * to hold a copy of the request, and send that to 5424 * the backend. We then set good status on the 5425 * user's request and return it immediately. 5426 */ 5427 if (cdb->byte2 & SSS_IMMED) { 5428 union ctl_io *new_io; 5429 5430 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5431 if (new_io == NULL) { 5432 ctl_set_busy(ctsio); 5433 ctl_done((union ctl_io *)ctsio); 5434 } else { 5435 ctl_copy_io((union ctl_io *)ctsio, 5436 new_io); 5437 retval = lun->backend->config_write(new_io); 5438 ctl_set_success(ctsio); 5439 ctl_done((union ctl_io *)ctsio); 5440 } 5441 } else { 5442 retval = lun->backend->config_write( 5443 (union ctl_io *)ctsio); 5444 } 5445 #ifdef NEEDTOPORT 5446 } 5447 #endif 5448 return (retval); 5449 } 5450 5451 /* 5452 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5453 * we don't really do anything with the LBA and length fields if the user 5454 * passes them in. Instead we'll just flush out the cache for the entire 5455 * LUN. 5456 */ 5457 int 5458 ctl_sync_cache(struct ctl_scsiio *ctsio) 5459 { 5460 struct ctl_lun *lun; 5461 struct ctl_softc *ctl_softc; 5462 uint64_t starting_lba; 5463 uint32_t block_count; 5464 int reladr, immed; 5465 int retval; 5466 5467 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5468 5469 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5470 ctl_softc = control_softc; 5471 retval = 0; 5472 reladr = 0; 5473 immed = 0; 5474 5475 switch (ctsio->cdb[0]) { 5476 case SYNCHRONIZE_CACHE: { 5477 struct scsi_sync_cache *cdb; 5478 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5479 5480 if (cdb->byte2 & SSC_RELADR) 5481 reladr = 1; 5482 5483 if (cdb->byte2 & SSC_IMMED) 5484 immed = 1; 5485 5486 starting_lba = scsi_4btoul(cdb->begin_lba); 5487 block_count = scsi_2btoul(cdb->lb_count); 5488 break; 5489 } 5490 case SYNCHRONIZE_CACHE_16: { 5491 struct scsi_sync_cache_16 *cdb; 5492 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5493 5494 if (cdb->byte2 & SSC_RELADR) 5495 reladr = 1; 5496 5497 if (cdb->byte2 & SSC_IMMED) 5498 immed = 1; 5499 5500 starting_lba = scsi_8btou64(cdb->begin_lba); 5501 block_count = scsi_4btoul(cdb->lb_count); 5502 break; 5503 } 5504 default: 5505 ctl_set_invalid_opcode(ctsio); 5506 ctl_done((union ctl_io *)ctsio); 5507 goto bailout; 5508 break; /* NOTREACHED */ 5509 } 5510 5511 if (immed) { 5512 /* 5513 * We don't support the immediate bit. Since it's in the 5514 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5515 * commands, we can just return the same error in either 5516 * case. 5517 */ 5518 ctl_set_invalid_field(ctsio, 5519 /*sks_valid*/ 1, 5520 /*command*/ 1, 5521 /*field*/ 1, 5522 /*bit_valid*/ 1, 5523 /*bit*/ 1); 5524 ctl_done((union ctl_io *)ctsio); 5525 goto bailout; 5526 } 5527 5528 if (reladr) { 5529 /* 5530 * We don't support the reladr bit either. It can only be 5531 * used with linked commands, and we don't support linked 5532 * commands. Since the bit is in the same place for the 5533 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5534 * just return the same error in either case. 5535 */ 5536 ctl_set_invalid_field(ctsio, 5537 /*sks_valid*/ 1, 5538 /*command*/ 1, 5539 /*field*/ 1, 5540 /*bit_valid*/ 1, 5541 /*bit*/ 0); 5542 ctl_done((union ctl_io *)ctsio); 5543 goto bailout; 5544 } 5545 5546 /* 5547 * We check the LBA and length, but don't do anything with them. 5548 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5549 * get flushed. This check will just help satisfy anyone who wants 5550 * to see an error for an out of range LBA. 5551 */ 5552 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5553 ctl_set_lba_out_of_range(ctsio); 5554 ctl_done((union ctl_io *)ctsio); 5555 goto bailout; 5556 } 5557 5558 /* 5559 * If this LUN has no backend, we can't flush the cache anyway. 5560 */ 5561 if (lun->backend == NULL) { 5562 ctl_set_invalid_opcode(ctsio); 5563 ctl_done((union ctl_io *)ctsio); 5564 goto bailout; 5565 } 5566 5567 /* 5568 * Check to see whether we're configured to send the SYNCHRONIZE 5569 * CACHE command directly to the back end. 5570 */ 5571 mtx_lock(&ctl_softc->ctl_lock); 5572 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5573 && (++(lun->sync_count) >= lun->sync_interval)) { 5574 lun->sync_count = 0; 5575 mtx_unlock(&ctl_softc->ctl_lock); 5576 retval = lun->backend->config_write((union ctl_io *)ctsio); 5577 } else { 5578 mtx_unlock(&ctl_softc->ctl_lock); 5579 ctl_set_success(ctsio); 5580 ctl_done((union ctl_io *)ctsio); 5581 } 5582 5583 bailout: 5584 5585 return (retval); 5586 } 5587 5588 int 5589 ctl_format(struct ctl_scsiio *ctsio) 5590 { 5591 struct scsi_format *cdb; 5592 struct ctl_lun *lun; 5593 struct ctl_softc *ctl_softc; 5594 int length, defect_list_len; 5595 5596 CTL_DEBUG_PRINT(("ctl_format\n")); 5597 5598 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5599 ctl_softc = control_softc; 5600 5601 cdb = (struct scsi_format *)ctsio->cdb; 5602 5603 length = 0; 5604 if (cdb->byte2 & SF_FMTDATA) { 5605 if (cdb->byte2 & SF_LONGLIST) 5606 length = sizeof(struct scsi_format_header_long); 5607 else 5608 length = sizeof(struct scsi_format_header_short); 5609 } 5610 5611 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5612 && (length > 0)) { 5613 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5614 ctsio->kern_data_len = length; 5615 ctsio->kern_total_len = length; 5616 ctsio->kern_data_resid = 0; 5617 ctsio->kern_rel_offset = 0; 5618 ctsio->kern_sg_entries = 0; 5619 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5620 ctsio->be_move_done = ctl_config_move_done; 5621 ctl_datamove((union ctl_io *)ctsio); 5622 5623 return (CTL_RETVAL_COMPLETE); 5624 } 5625 5626 defect_list_len = 0; 5627 5628 if (cdb->byte2 & SF_FMTDATA) { 5629 if (cdb->byte2 & SF_LONGLIST) { 5630 struct scsi_format_header_long *header; 5631 5632 header = (struct scsi_format_header_long *) 5633 ctsio->kern_data_ptr; 5634 5635 defect_list_len = scsi_4btoul(header->defect_list_len); 5636 if (defect_list_len != 0) { 5637 ctl_set_invalid_field(ctsio, 5638 /*sks_valid*/ 1, 5639 /*command*/ 0, 5640 /*field*/ 2, 5641 /*bit_valid*/ 0, 5642 /*bit*/ 0); 5643 goto bailout; 5644 } 5645 } else { 5646 struct scsi_format_header_short *header; 5647 5648 header = (struct scsi_format_header_short *) 5649 ctsio->kern_data_ptr; 5650 5651 defect_list_len = scsi_2btoul(header->defect_list_len); 5652 if (defect_list_len != 0) { 5653 ctl_set_invalid_field(ctsio, 5654 /*sks_valid*/ 1, 5655 /*command*/ 0, 5656 /*field*/ 2, 5657 /*bit_valid*/ 0, 5658 /*bit*/ 0); 5659 goto bailout; 5660 } 5661 } 5662 } 5663 5664 /* 5665 * The format command will clear out the "Medium format corrupted" 5666 * status if set by the configuration code. That status is really 5667 * just a way to notify the host that we have lost the media, and 5668 * get them to issue a command that will basically make them think 5669 * they're blowing away the media. 5670 */ 5671 mtx_lock(&ctl_softc->ctl_lock); 5672 lun->flags &= ~CTL_LUN_INOPERABLE; 5673 mtx_unlock(&ctl_softc->ctl_lock); 5674 5675 ctsio->scsi_status = SCSI_STATUS_OK; 5676 ctsio->io_hdr.status = CTL_SUCCESS; 5677 bailout: 5678 5679 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5680 free(ctsio->kern_data_ptr, M_CTL); 5681 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5682 } 5683 5684 ctl_done((union ctl_io *)ctsio); 5685 return (CTL_RETVAL_COMPLETE); 5686 } 5687 5688 int 5689 ctl_write_buffer(struct ctl_scsiio *ctsio) 5690 { 5691 struct scsi_write_buffer *cdb; 5692 struct copan_page_header *header; 5693 struct ctl_lun *lun; 5694 struct ctl_softc *ctl_softc; 5695 int buffer_offset, len; 5696 int retval; 5697 5698 header = NULL; 5699 5700 retval = CTL_RETVAL_COMPLETE; 5701 5702 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5703 5704 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5705 ctl_softc = control_softc; 5706 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5707 5708 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5709 ctl_set_invalid_field(ctsio, 5710 /*sks_valid*/ 1, 5711 /*command*/ 1, 5712 /*field*/ 1, 5713 /*bit_valid*/ 1, 5714 /*bit*/ 4); 5715 ctl_done((union ctl_io *)ctsio); 5716 return (CTL_RETVAL_COMPLETE); 5717 } 5718 if (cdb->buffer_id != 0) { 5719 ctl_set_invalid_field(ctsio, 5720 /*sks_valid*/ 1, 5721 /*command*/ 1, 5722 /*field*/ 2, 5723 /*bit_valid*/ 0, 5724 /*bit*/ 0); 5725 ctl_done((union ctl_io *)ctsio); 5726 return (CTL_RETVAL_COMPLETE); 5727 } 5728 5729 len = scsi_3btoul(cdb->length); 5730 buffer_offset = scsi_3btoul(cdb->offset); 5731 5732 if (len > sizeof(lun->write_buffer)) { 5733 ctl_set_invalid_field(ctsio, 5734 /*sks_valid*/ 1, 5735 /*command*/ 1, 5736 /*field*/ 6, 5737 /*bit_valid*/ 0, 5738 /*bit*/ 0); 5739 ctl_done((union ctl_io *)ctsio); 5740 return (CTL_RETVAL_COMPLETE); 5741 } 5742 5743 if (buffer_offset != 0) { 5744 ctl_set_invalid_field(ctsio, 5745 /*sks_valid*/ 1, 5746 /*command*/ 1, 5747 /*field*/ 3, 5748 /*bit_valid*/ 0, 5749 /*bit*/ 0); 5750 ctl_done((union ctl_io *)ctsio); 5751 return (CTL_RETVAL_COMPLETE); 5752 } 5753 5754 /* 5755 * If we've got a kernel request that hasn't been malloced yet, 5756 * malloc it and tell the caller the data buffer is here. 5757 */ 5758 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5759 ctsio->kern_data_ptr = lun->write_buffer; 5760 ctsio->kern_data_len = len; 5761 ctsio->kern_total_len = len; 5762 ctsio->kern_data_resid = 0; 5763 ctsio->kern_rel_offset = 0; 5764 ctsio->kern_sg_entries = 0; 5765 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5766 ctsio->be_move_done = ctl_config_move_done; 5767 ctl_datamove((union ctl_io *)ctsio); 5768 5769 return (CTL_RETVAL_COMPLETE); 5770 } 5771 5772 ctl_done((union ctl_io *)ctsio); 5773 5774 return (CTL_RETVAL_COMPLETE); 5775 } 5776 5777 /* 5778 * Note that this function currently doesn't actually do anything inside 5779 * CTL to enforce things if the DQue bit is turned on. 5780 * 5781 * Also note that this function can't be used in the default case, because 5782 * the DQue bit isn't set in the changeable mask for the control mode page 5783 * anyway. This is just here as an example for how to implement a page 5784 * handler, and a placeholder in case we want to allow the user to turn 5785 * tagged queueing on and off. 5786 * 5787 * The D_SENSE bit handling is functional, however, and will turn 5788 * descriptor sense on and off for a given LUN. 5789 */ 5790 int 5791 ctl_control_page_handler(struct ctl_scsiio *ctsio, 5792 struct ctl_page_index *page_index, uint8_t *page_ptr) 5793 { 5794 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5795 struct ctl_lun *lun; 5796 struct ctl_softc *softc; 5797 int set_ua; 5798 uint32_t initidx; 5799 5800 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5801 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5802 set_ua = 0; 5803 5804 user_cp = (struct scsi_control_page *)page_ptr; 5805 current_cp = (struct scsi_control_page *) 5806 (page_index->page_data + (page_index->page_len * 5807 CTL_PAGE_CURRENT)); 5808 saved_cp = (struct scsi_control_page *) 5809 (page_index->page_data + (page_index->page_len * 5810 CTL_PAGE_SAVED)); 5811 5812 softc = control_softc; 5813 5814 mtx_lock(&softc->ctl_lock); 5815 if (((current_cp->rlec & SCP_DSENSE) == 0) 5816 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5817 /* 5818 * Descriptor sense is currently turned off and the user 5819 * wants to turn it on. 5820 */ 5821 current_cp->rlec |= SCP_DSENSE; 5822 saved_cp->rlec |= SCP_DSENSE; 5823 lun->flags |= CTL_LUN_SENSE_DESC; 5824 set_ua = 1; 5825 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5826 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5827 /* 5828 * Descriptor sense is currently turned on, and the user 5829 * wants to turn it off. 5830 */ 5831 current_cp->rlec &= ~SCP_DSENSE; 5832 saved_cp->rlec &= ~SCP_DSENSE; 5833 lun->flags &= ~CTL_LUN_SENSE_DESC; 5834 set_ua = 1; 5835 } 5836 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5837 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5838 #ifdef NEEDTOPORT 5839 csevent_log(CSC_CTL | CSC_SHELF_SW | 5840 CTL_UNTAG_TO_UNTAG, 5841 csevent_LogType_Trace, 5842 csevent_Severity_Information, 5843 csevent_AlertLevel_Green, 5844 csevent_FRU_Firmware, 5845 csevent_FRU_Unknown, 5846 "Received untagged to untagged transition"); 5847 #endif /* NEEDTOPORT */ 5848 } else { 5849 #ifdef NEEDTOPORT 5850 csevent_log(CSC_CTL | CSC_SHELF_SW | 5851 CTL_UNTAG_TO_TAG, 5852 csevent_LogType_ConfigChange, 5853 csevent_Severity_Information, 5854 csevent_AlertLevel_Green, 5855 csevent_FRU_Firmware, 5856 csevent_FRU_Unknown, 5857 "Received untagged to tagged " 5858 "queueing transition"); 5859 #endif /* NEEDTOPORT */ 5860 5861 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5862 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5863 set_ua = 1; 5864 } 5865 } else { 5866 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5867 #ifdef NEEDTOPORT 5868 csevent_log(CSC_CTL | CSC_SHELF_SW | 5869 CTL_TAG_TO_UNTAG, 5870 csevent_LogType_ConfigChange, 5871 csevent_Severity_Warning, 5872 csevent_AlertLevel_Yellow, 5873 csevent_FRU_Firmware, 5874 csevent_FRU_Unknown, 5875 "Received tagged queueing to untagged " 5876 "transition"); 5877 #endif /* NEEDTOPORT */ 5878 5879 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5880 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5881 set_ua = 1; 5882 } else { 5883 #ifdef NEEDTOPORT 5884 csevent_log(CSC_CTL | CSC_SHELF_SW | 5885 CTL_TAG_TO_TAG, 5886 csevent_LogType_Trace, 5887 csevent_Severity_Information, 5888 csevent_AlertLevel_Green, 5889 csevent_FRU_Firmware, 5890 csevent_FRU_Unknown, 5891 "Received tagged queueing to tagged " 5892 "queueing transition"); 5893 #endif /* NEEDTOPORT */ 5894 } 5895 } 5896 if (set_ua != 0) { 5897 int i; 5898 /* 5899 * Let other initiators know that the mode 5900 * parameters for this LUN have changed. 5901 */ 5902 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 5903 if (i == initidx) 5904 continue; 5905 5906 lun->pending_sense[i].ua_pending |= 5907 CTL_UA_MODE_CHANGE; 5908 } 5909 } 5910 mtx_unlock(&softc->ctl_lock); 5911 5912 return (0); 5913 } 5914 5915 int 5916 ctl_power_sp_handler(struct ctl_scsiio *ctsio, 5917 struct ctl_page_index *page_index, uint8_t *page_ptr) 5918 { 5919 return (0); 5920 } 5921 5922 int 5923 ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 5924 struct ctl_page_index *page_index, int pc) 5925 { 5926 struct copan_power_subpage *page; 5927 5928 page = (struct copan_power_subpage *)page_index->page_data + 5929 (page_index->page_len * pc); 5930 5931 switch (pc) { 5932 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5933 /* 5934 * We don't update the changable bits for this page. 5935 */ 5936 break; 5937 case SMS_PAGE_CTRL_CURRENT >> 6: 5938 case SMS_PAGE_CTRL_DEFAULT >> 6: 5939 case SMS_PAGE_CTRL_SAVED >> 6: 5940 #ifdef NEEDTOPORT 5941 ctl_update_power_subpage(page); 5942 #endif 5943 break; 5944 default: 5945 #ifdef NEEDTOPORT 5946 EPRINT(0, "Invalid PC %d!!", pc); 5947 #endif 5948 break; 5949 } 5950 return (0); 5951 } 5952 5953 5954 int 5955 ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 5956 struct ctl_page_index *page_index, uint8_t *page_ptr) 5957 { 5958 struct copan_aps_subpage *user_sp; 5959 struct copan_aps_subpage *current_sp; 5960 union ctl_modepage_info *modepage_info; 5961 struct ctl_softc *softc; 5962 struct ctl_lun *lun; 5963 int retval; 5964 5965 retval = CTL_RETVAL_COMPLETE; 5966 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 5967 (page_index->page_len * CTL_PAGE_CURRENT)); 5968 softc = control_softc; 5969 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5970 5971 user_sp = (struct copan_aps_subpage *)page_ptr; 5972 5973 modepage_info = (union ctl_modepage_info *) 5974 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 5975 5976 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 5977 modepage_info->header.subpage = page_index->subpage; 5978 modepage_info->aps.lock_active = user_sp->lock_active; 5979 5980 mtx_lock(&softc->ctl_lock); 5981 5982 /* 5983 * If there is a request to lock the LUN and another LUN is locked 5984 * this is an error. If the requested LUN is already locked ignore 5985 * the request. If no LUN is locked attempt to lock it. 5986 * if there is a request to unlock the LUN and the LUN is currently 5987 * locked attempt to unlock it. Otherwise ignore the request. i.e. 5988 * if another LUN is locked or no LUN is locked. 5989 */ 5990 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 5991 if (softc->aps_locked_lun == lun->lun) { 5992 /* 5993 * This LUN is already locked, so we're done. 5994 */ 5995 retval = CTL_RETVAL_COMPLETE; 5996 } else if (softc->aps_locked_lun == 0) { 5997 /* 5998 * No one has the lock, pass the request to the 5999 * backend. 6000 */ 6001 retval = lun->backend->config_write( 6002 (union ctl_io *)ctsio); 6003 } else { 6004 /* 6005 * Someone else has the lock, throw out the request. 6006 */ 6007 ctl_set_already_locked(ctsio); 6008 free(ctsio->kern_data_ptr, M_CTL); 6009 ctl_done((union ctl_io *)ctsio); 6010 6011 /* 6012 * Set the return value so that ctl_do_mode_select() 6013 * won't try to complete the command. We already 6014 * completed it here. 6015 */ 6016 retval = CTL_RETVAL_ERROR; 6017 } 6018 } else if (softc->aps_locked_lun == lun->lun) { 6019 /* 6020 * This LUN is locked, so pass the unlock request to the 6021 * backend. 6022 */ 6023 retval = lun->backend->config_write((union ctl_io *)ctsio); 6024 } 6025 mtx_unlock(&softc->ctl_lock); 6026 6027 return (retval); 6028 } 6029 6030 int 6031 ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6032 struct ctl_page_index *page_index, 6033 uint8_t *page_ptr) 6034 { 6035 uint8_t *c; 6036 int i; 6037 6038 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6039 ctl_time_io_secs = 6040 (c[0] << 8) | 6041 (c[1] << 0) | 6042 0; 6043 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6044 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6045 printf("page data:"); 6046 for (i=0; i<8; i++) 6047 printf(" %.2x",page_ptr[i]); 6048 printf("\n"); 6049 return (0); 6050 } 6051 6052 int 6053 ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6054 struct ctl_page_index *page_index, 6055 int pc) 6056 { 6057 struct copan_debugconf_subpage *page; 6058 6059 page = (struct copan_debugconf_subpage *)page_index->page_data + 6060 (page_index->page_len * pc); 6061 6062 switch (pc) { 6063 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6064 case SMS_PAGE_CTRL_DEFAULT >> 6: 6065 case SMS_PAGE_CTRL_SAVED >> 6: 6066 /* 6067 * We don't update the changable or default bits for this page. 6068 */ 6069 break; 6070 case SMS_PAGE_CTRL_CURRENT >> 6: 6071 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6072 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6073 break; 6074 default: 6075 #ifdef NEEDTOPORT 6076 EPRINT(0, "Invalid PC %d!!", pc); 6077 #endif /* NEEDTOPORT */ 6078 break; 6079 } 6080 return (0); 6081 } 6082 6083 6084 static int 6085 ctl_do_mode_select(union ctl_io *io) 6086 { 6087 struct scsi_mode_page_header *page_header; 6088 struct ctl_page_index *page_index; 6089 struct ctl_scsiio *ctsio; 6090 int control_dev, page_len; 6091 int page_len_offset, page_len_size; 6092 union ctl_modepage_info *modepage_info; 6093 struct ctl_lun *lun; 6094 int *len_left, *len_used; 6095 int retval, i; 6096 6097 ctsio = &io->scsiio; 6098 page_index = NULL; 6099 page_len = 0; 6100 retval = CTL_RETVAL_COMPLETE; 6101 6102 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6103 6104 if (lun->be_lun->lun_type != T_DIRECT) 6105 control_dev = 1; 6106 else 6107 control_dev = 0; 6108 6109 modepage_info = (union ctl_modepage_info *) 6110 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6111 len_left = &modepage_info->header.len_left; 6112 len_used = &modepage_info->header.len_used; 6113 6114 do_next_page: 6115 6116 page_header = (struct scsi_mode_page_header *) 6117 (ctsio->kern_data_ptr + *len_used); 6118 6119 if (*len_left == 0) { 6120 free(ctsio->kern_data_ptr, M_CTL); 6121 ctl_set_success(ctsio); 6122 ctl_done((union ctl_io *)ctsio); 6123 return (CTL_RETVAL_COMPLETE); 6124 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6125 6126 free(ctsio->kern_data_ptr, M_CTL); 6127 ctl_set_param_len_error(ctsio); 6128 ctl_done((union ctl_io *)ctsio); 6129 return (CTL_RETVAL_COMPLETE); 6130 6131 } else if ((page_header->page_code & SMPH_SPF) 6132 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6133 6134 free(ctsio->kern_data_ptr, M_CTL); 6135 ctl_set_param_len_error(ctsio); 6136 ctl_done((union ctl_io *)ctsio); 6137 return (CTL_RETVAL_COMPLETE); 6138 } 6139 6140 6141 /* 6142 * XXX KDM should we do something with the block descriptor? 6143 */ 6144 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6145 6146 if ((control_dev != 0) 6147 && (lun->mode_pages.index[i].page_flags & 6148 CTL_PAGE_FLAG_DISK_ONLY)) 6149 continue; 6150 6151 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6152 (page_header->page_code & SMPH_PC_MASK)) 6153 continue; 6154 6155 /* 6156 * If neither page has a subpage code, then we've got a 6157 * match. 6158 */ 6159 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6160 && ((page_header->page_code & SMPH_SPF) == 0)) { 6161 page_index = &lun->mode_pages.index[i]; 6162 page_len = page_header->page_length; 6163 break; 6164 } 6165 6166 /* 6167 * If both pages have subpages, then the subpage numbers 6168 * have to match. 6169 */ 6170 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6171 && (page_header->page_code & SMPH_SPF)) { 6172 struct scsi_mode_page_header_sp *sph; 6173 6174 sph = (struct scsi_mode_page_header_sp *)page_header; 6175 6176 if (lun->mode_pages.index[i].subpage == 6177 sph->subpage) { 6178 page_index = &lun->mode_pages.index[i]; 6179 page_len = scsi_2btoul(sph->page_length); 6180 break; 6181 } 6182 } 6183 } 6184 6185 /* 6186 * If we couldn't find the page, or if we don't have a mode select 6187 * handler for it, send back an error to the user. 6188 */ 6189 if ((page_index == NULL) 6190 || (page_index->select_handler == NULL)) { 6191 ctl_set_invalid_field(ctsio, 6192 /*sks_valid*/ 1, 6193 /*command*/ 0, 6194 /*field*/ *len_used, 6195 /*bit_valid*/ 0, 6196 /*bit*/ 0); 6197 free(ctsio->kern_data_ptr, M_CTL); 6198 ctl_done((union ctl_io *)ctsio); 6199 return (CTL_RETVAL_COMPLETE); 6200 } 6201 6202 if (page_index->page_code & SMPH_SPF) { 6203 page_len_offset = 2; 6204 page_len_size = 2; 6205 } else { 6206 page_len_size = 1; 6207 page_len_offset = 1; 6208 } 6209 6210 /* 6211 * If the length the initiator gives us isn't the one we specify in 6212 * the mode page header, or if they didn't specify enough data in 6213 * the CDB to avoid truncating this page, kick out the request. 6214 */ 6215 if ((page_len != (page_index->page_len - page_len_offset - 6216 page_len_size)) 6217 || (*len_left < page_index->page_len)) { 6218 6219 6220 ctl_set_invalid_field(ctsio, 6221 /*sks_valid*/ 1, 6222 /*command*/ 0, 6223 /*field*/ *len_used + page_len_offset, 6224 /*bit_valid*/ 0, 6225 /*bit*/ 0); 6226 free(ctsio->kern_data_ptr, M_CTL); 6227 ctl_done((union ctl_io *)ctsio); 6228 return (CTL_RETVAL_COMPLETE); 6229 } 6230 6231 /* 6232 * Run through the mode page, checking to make sure that the bits 6233 * the user changed are actually legal for him to change. 6234 */ 6235 for (i = 0; i < page_index->page_len; i++) { 6236 uint8_t *user_byte, *change_mask, *current_byte; 6237 int bad_bit; 6238 int j; 6239 6240 user_byte = (uint8_t *)page_header + i; 6241 change_mask = page_index->page_data + 6242 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6243 current_byte = page_index->page_data + 6244 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6245 6246 /* 6247 * Check to see whether the user set any bits in this byte 6248 * that he is not allowed to set. 6249 */ 6250 if ((*user_byte & ~(*change_mask)) == 6251 (*current_byte & ~(*change_mask))) 6252 continue; 6253 6254 /* 6255 * Go through bit by bit to determine which one is illegal. 6256 */ 6257 bad_bit = 0; 6258 for (j = 7; j >= 0; j--) { 6259 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6260 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6261 bad_bit = i; 6262 break; 6263 } 6264 } 6265 ctl_set_invalid_field(ctsio, 6266 /*sks_valid*/ 1, 6267 /*command*/ 0, 6268 /*field*/ *len_used + i, 6269 /*bit_valid*/ 1, 6270 /*bit*/ bad_bit); 6271 free(ctsio->kern_data_ptr, M_CTL); 6272 ctl_done((union ctl_io *)ctsio); 6273 return (CTL_RETVAL_COMPLETE); 6274 } 6275 6276 /* 6277 * Decrement these before we call the page handler, since we may 6278 * end up getting called back one way or another before the handler 6279 * returns to this context. 6280 */ 6281 *len_left -= page_index->page_len; 6282 *len_used += page_index->page_len; 6283 6284 retval = page_index->select_handler(ctsio, page_index, 6285 (uint8_t *)page_header); 6286 6287 /* 6288 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6289 * wait until this queued command completes to finish processing 6290 * the mode page. If it returns anything other than 6291 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6292 * already set the sense information, freed the data pointer, and 6293 * completed the io for us. 6294 */ 6295 if (retval != CTL_RETVAL_COMPLETE) 6296 goto bailout_no_done; 6297 6298 /* 6299 * If the initiator sent us more than one page, parse the next one. 6300 */ 6301 if (*len_left > 0) 6302 goto do_next_page; 6303 6304 ctl_set_success(ctsio); 6305 free(ctsio->kern_data_ptr, M_CTL); 6306 ctl_done((union ctl_io *)ctsio); 6307 6308 bailout_no_done: 6309 6310 return (CTL_RETVAL_COMPLETE); 6311 6312 } 6313 6314 int 6315 ctl_mode_select(struct ctl_scsiio *ctsio) 6316 { 6317 int param_len, pf, sp; 6318 int header_size, bd_len; 6319 int len_left, len_used; 6320 struct ctl_page_index *page_index; 6321 struct ctl_lun *lun; 6322 int control_dev, page_len; 6323 union ctl_modepage_info *modepage_info; 6324 int retval; 6325 6326 pf = 0; 6327 sp = 0; 6328 page_len = 0; 6329 len_used = 0; 6330 len_left = 0; 6331 retval = 0; 6332 bd_len = 0; 6333 page_index = NULL; 6334 6335 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6336 6337 if (lun->be_lun->lun_type != T_DIRECT) 6338 control_dev = 1; 6339 else 6340 control_dev = 0; 6341 6342 switch (ctsio->cdb[0]) { 6343 case MODE_SELECT_6: { 6344 struct scsi_mode_select_6 *cdb; 6345 6346 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6347 6348 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6349 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6350 6351 param_len = cdb->length; 6352 header_size = sizeof(struct scsi_mode_header_6); 6353 break; 6354 } 6355 case MODE_SELECT_10: { 6356 struct scsi_mode_select_10 *cdb; 6357 6358 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6359 6360 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6361 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6362 6363 param_len = scsi_2btoul(cdb->length); 6364 header_size = sizeof(struct scsi_mode_header_10); 6365 break; 6366 } 6367 default: 6368 ctl_set_invalid_opcode(ctsio); 6369 ctl_done((union ctl_io *)ctsio); 6370 return (CTL_RETVAL_COMPLETE); 6371 break; /* NOTREACHED */ 6372 } 6373 6374 /* 6375 * From SPC-3: 6376 * "A parameter list length of zero indicates that the Data-Out Buffer 6377 * shall be empty. This condition shall not be considered as an error." 6378 */ 6379 if (param_len == 0) { 6380 ctl_set_success(ctsio); 6381 ctl_done((union ctl_io *)ctsio); 6382 return (CTL_RETVAL_COMPLETE); 6383 } 6384 6385 /* 6386 * Since we'll hit this the first time through, prior to 6387 * allocation, we don't need to free a data buffer here. 6388 */ 6389 if (param_len < header_size) { 6390 ctl_set_param_len_error(ctsio); 6391 ctl_done((union ctl_io *)ctsio); 6392 return (CTL_RETVAL_COMPLETE); 6393 } 6394 6395 /* 6396 * Allocate the data buffer and grab the user's data. In theory, 6397 * we shouldn't have to sanity check the parameter list length here 6398 * because the maximum size is 64K. We should be able to malloc 6399 * that much without too many problems. 6400 */ 6401 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6402 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6403 ctsio->kern_data_len = param_len; 6404 ctsio->kern_total_len = param_len; 6405 ctsio->kern_data_resid = 0; 6406 ctsio->kern_rel_offset = 0; 6407 ctsio->kern_sg_entries = 0; 6408 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6409 ctsio->be_move_done = ctl_config_move_done; 6410 ctl_datamove((union ctl_io *)ctsio); 6411 6412 return (CTL_RETVAL_COMPLETE); 6413 } 6414 6415 switch (ctsio->cdb[0]) { 6416 case MODE_SELECT_6: { 6417 struct scsi_mode_header_6 *mh6; 6418 6419 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6420 bd_len = mh6->blk_desc_len; 6421 break; 6422 } 6423 case MODE_SELECT_10: { 6424 struct scsi_mode_header_10 *mh10; 6425 6426 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6427 bd_len = scsi_2btoul(mh10->blk_desc_len); 6428 break; 6429 } 6430 default: 6431 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6432 break; 6433 } 6434 6435 if (param_len < (header_size + bd_len)) { 6436 free(ctsio->kern_data_ptr, M_CTL); 6437 ctl_set_param_len_error(ctsio); 6438 ctl_done((union ctl_io *)ctsio); 6439 return (CTL_RETVAL_COMPLETE); 6440 } 6441 6442 /* 6443 * Set the IO_CONT flag, so that if this I/O gets passed to 6444 * ctl_config_write_done(), it'll get passed back to 6445 * ctl_do_mode_select() for further processing, or completion if 6446 * we're all done. 6447 */ 6448 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6449 ctsio->io_cont = ctl_do_mode_select; 6450 6451 modepage_info = (union ctl_modepage_info *) 6452 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6453 6454 memset(modepage_info, 0, sizeof(*modepage_info)); 6455 6456 len_left = param_len - header_size - bd_len; 6457 len_used = header_size + bd_len; 6458 6459 modepage_info->header.len_left = len_left; 6460 modepage_info->header.len_used = len_used; 6461 6462 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6463 } 6464 6465 int 6466 ctl_mode_sense(struct ctl_scsiio *ctsio) 6467 { 6468 struct ctl_lun *lun; 6469 int pc, page_code, dbd, llba, subpage; 6470 int alloc_len, page_len, header_len, total_len; 6471 struct scsi_mode_block_descr *block_desc; 6472 struct ctl_page_index *page_index; 6473 int control_dev; 6474 6475 dbd = 0; 6476 llba = 0; 6477 block_desc = NULL; 6478 page_index = NULL; 6479 6480 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6481 6482 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6483 6484 if (lun->be_lun->lun_type != T_DIRECT) 6485 control_dev = 1; 6486 else 6487 control_dev = 0; 6488 6489 switch (ctsio->cdb[0]) { 6490 case MODE_SENSE_6: { 6491 struct scsi_mode_sense_6 *cdb; 6492 6493 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6494 6495 header_len = sizeof(struct scsi_mode_hdr_6); 6496 if (cdb->byte2 & SMS_DBD) 6497 dbd = 1; 6498 else 6499 header_len += sizeof(struct scsi_mode_block_descr); 6500 6501 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6502 page_code = cdb->page & SMS_PAGE_CODE; 6503 subpage = cdb->subpage; 6504 alloc_len = cdb->length; 6505 break; 6506 } 6507 case MODE_SENSE_10: { 6508 struct scsi_mode_sense_10 *cdb; 6509 6510 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6511 6512 header_len = sizeof(struct scsi_mode_hdr_10); 6513 6514 if (cdb->byte2 & SMS_DBD) 6515 dbd = 1; 6516 else 6517 header_len += sizeof(struct scsi_mode_block_descr); 6518 if (cdb->byte2 & SMS10_LLBAA) 6519 llba = 1; 6520 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6521 page_code = cdb->page & SMS_PAGE_CODE; 6522 subpage = cdb->subpage; 6523 alloc_len = scsi_2btoul(cdb->length); 6524 break; 6525 } 6526 default: 6527 ctl_set_invalid_opcode(ctsio); 6528 ctl_done((union ctl_io *)ctsio); 6529 return (CTL_RETVAL_COMPLETE); 6530 break; /* NOTREACHED */ 6531 } 6532 6533 /* 6534 * We have to make a first pass through to calculate the size of 6535 * the pages that match the user's query. Then we allocate enough 6536 * memory to hold it, and actually copy the data into the buffer. 6537 */ 6538 switch (page_code) { 6539 case SMS_ALL_PAGES_PAGE: { 6540 int i; 6541 6542 page_len = 0; 6543 6544 /* 6545 * At the moment, values other than 0 and 0xff here are 6546 * reserved according to SPC-3. 6547 */ 6548 if ((subpage != SMS_SUBPAGE_PAGE_0) 6549 && (subpage != SMS_SUBPAGE_ALL)) { 6550 ctl_set_invalid_field(ctsio, 6551 /*sks_valid*/ 1, 6552 /*command*/ 1, 6553 /*field*/ 3, 6554 /*bit_valid*/ 0, 6555 /*bit*/ 0); 6556 ctl_done((union ctl_io *)ctsio); 6557 return (CTL_RETVAL_COMPLETE); 6558 } 6559 6560 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6561 if ((control_dev != 0) 6562 && (lun->mode_pages.index[i].page_flags & 6563 CTL_PAGE_FLAG_DISK_ONLY)) 6564 continue; 6565 6566 /* 6567 * We don't use this subpage if the user didn't 6568 * request all subpages. 6569 */ 6570 if ((lun->mode_pages.index[i].subpage != 0) 6571 && (subpage == SMS_SUBPAGE_PAGE_0)) 6572 continue; 6573 6574 #if 0 6575 printf("found page %#x len %d\n", 6576 lun->mode_pages.index[i].page_code & 6577 SMPH_PC_MASK, 6578 lun->mode_pages.index[i].page_len); 6579 #endif 6580 page_len += lun->mode_pages.index[i].page_len; 6581 } 6582 break; 6583 } 6584 default: { 6585 int i; 6586 6587 page_len = 0; 6588 6589 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6590 /* Look for the right page code */ 6591 if ((lun->mode_pages.index[i].page_code & 6592 SMPH_PC_MASK) != page_code) 6593 continue; 6594 6595 /* Look for the right subpage or the subpage wildcard*/ 6596 if ((lun->mode_pages.index[i].subpage != subpage) 6597 && (subpage != SMS_SUBPAGE_ALL)) 6598 continue; 6599 6600 /* Make sure the page is supported for this dev type */ 6601 if ((control_dev != 0) 6602 && (lun->mode_pages.index[i].page_flags & 6603 CTL_PAGE_FLAG_DISK_ONLY)) 6604 continue; 6605 6606 #if 0 6607 printf("found page %#x len %d\n", 6608 lun->mode_pages.index[i].page_code & 6609 SMPH_PC_MASK, 6610 lun->mode_pages.index[i].page_len); 6611 #endif 6612 6613 page_len += lun->mode_pages.index[i].page_len; 6614 } 6615 6616 if (page_len == 0) { 6617 ctl_set_invalid_field(ctsio, 6618 /*sks_valid*/ 1, 6619 /*command*/ 1, 6620 /*field*/ 2, 6621 /*bit_valid*/ 1, 6622 /*bit*/ 5); 6623 ctl_done((union ctl_io *)ctsio); 6624 return (CTL_RETVAL_COMPLETE); 6625 } 6626 break; 6627 } 6628 } 6629 6630 total_len = header_len + page_len; 6631 #if 0 6632 printf("header_len = %d, page_len = %d, total_len = %d\n", 6633 header_len, page_len, total_len); 6634 #endif 6635 6636 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6637 ctsio->kern_sg_entries = 0; 6638 ctsio->kern_data_resid = 0; 6639 ctsio->kern_rel_offset = 0; 6640 if (total_len < alloc_len) { 6641 ctsio->residual = alloc_len - total_len; 6642 ctsio->kern_data_len = total_len; 6643 ctsio->kern_total_len = total_len; 6644 } else { 6645 ctsio->residual = 0; 6646 ctsio->kern_data_len = alloc_len; 6647 ctsio->kern_total_len = alloc_len; 6648 } 6649 6650 switch (ctsio->cdb[0]) { 6651 case MODE_SENSE_6: { 6652 struct scsi_mode_hdr_6 *header; 6653 6654 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6655 6656 header->datalen = ctl_min(total_len - 1, 254); 6657 6658 if (dbd) 6659 header->block_descr_len = 0; 6660 else 6661 header->block_descr_len = 6662 sizeof(struct scsi_mode_block_descr); 6663 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6664 break; 6665 } 6666 case MODE_SENSE_10: { 6667 struct scsi_mode_hdr_10 *header; 6668 int datalen; 6669 6670 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6671 6672 datalen = ctl_min(total_len - 2, 65533); 6673 scsi_ulto2b(datalen, header->datalen); 6674 if (dbd) 6675 scsi_ulto2b(0, header->block_descr_len); 6676 else 6677 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6678 header->block_descr_len); 6679 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6680 break; 6681 } 6682 default: 6683 panic("invalid CDB type %#x", ctsio->cdb[0]); 6684 break; /* NOTREACHED */ 6685 } 6686 6687 /* 6688 * If we've got a disk, use its blocksize in the block 6689 * descriptor. Otherwise, just set it to 0. 6690 */ 6691 if (dbd == 0) { 6692 if (control_dev != 0) 6693 scsi_ulto3b(lun->be_lun->blocksize, 6694 block_desc->block_len); 6695 else 6696 scsi_ulto3b(0, block_desc->block_len); 6697 } 6698 6699 switch (page_code) { 6700 case SMS_ALL_PAGES_PAGE: { 6701 int i, data_used; 6702 6703 data_used = header_len; 6704 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6705 struct ctl_page_index *page_index; 6706 6707 page_index = &lun->mode_pages.index[i]; 6708 6709 if ((control_dev != 0) 6710 && (page_index->page_flags & 6711 CTL_PAGE_FLAG_DISK_ONLY)) 6712 continue; 6713 6714 /* 6715 * We don't use this subpage if the user didn't 6716 * request all subpages. We already checked (above) 6717 * to make sure the user only specified a subpage 6718 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6719 */ 6720 if ((page_index->subpage != 0) 6721 && (subpage == SMS_SUBPAGE_PAGE_0)) 6722 continue; 6723 6724 /* 6725 * Call the handler, if it exists, to update the 6726 * page to the latest values. 6727 */ 6728 if (page_index->sense_handler != NULL) 6729 page_index->sense_handler(ctsio, page_index,pc); 6730 6731 memcpy(ctsio->kern_data_ptr + data_used, 6732 page_index->page_data + 6733 (page_index->page_len * pc), 6734 page_index->page_len); 6735 data_used += page_index->page_len; 6736 } 6737 break; 6738 } 6739 default: { 6740 int i, data_used; 6741 6742 data_used = header_len; 6743 6744 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6745 struct ctl_page_index *page_index; 6746 6747 page_index = &lun->mode_pages.index[i]; 6748 6749 /* Look for the right page code */ 6750 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6751 continue; 6752 6753 /* Look for the right subpage or the subpage wildcard*/ 6754 if ((page_index->subpage != subpage) 6755 && (subpage != SMS_SUBPAGE_ALL)) 6756 continue; 6757 6758 /* Make sure the page is supported for this dev type */ 6759 if ((control_dev != 0) 6760 && (page_index->page_flags & 6761 CTL_PAGE_FLAG_DISK_ONLY)) 6762 continue; 6763 6764 /* 6765 * Call the handler, if it exists, to update the 6766 * page to the latest values. 6767 */ 6768 if (page_index->sense_handler != NULL) 6769 page_index->sense_handler(ctsio, page_index,pc); 6770 6771 memcpy(ctsio->kern_data_ptr + data_used, 6772 page_index->page_data + 6773 (page_index->page_len * pc), 6774 page_index->page_len); 6775 data_used += page_index->page_len; 6776 } 6777 break; 6778 } 6779 } 6780 6781 ctsio->scsi_status = SCSI_STATUS_OK; 6782 6783 ctsio->be_move_done = ctl_config_move_done; 6784 ctl_datamove((union ctl_io *)ctsio); 6785 6786 return (CTL_RETVAL_COMPLETE); 6787 } 6788 6789 int 6790 ctl_read_capacity(struct ctl_scsiio *ctsio) 6791 { 6792 struct scsi_read_capacity *cdb; 6793 struct scsi_read_capacity_data *data; 6794 struct ctl_lun *lun; 6795 uint32_t lba; 6796 6797 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6798 6799 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6800 6801 lba = scsi_4btoul(cdb->addr); 6802 if (((cdb->pmi & SRC_PMI) == 0) 6803 && (lba != 0)) { 6804 ctl_set_invalid_field(/*ctsio*/ ctsio, 6805 /*sks_valid*/ 1, 6806 /*command*/ 1, 6807 /*field*/ 2, 6808 /*bit_valid*/ 0, 6809 /*bit*/ 0); 6810 ctl_done((union ctl_io *)ctsio); 6811 return (CTL_RETVAL_COMPLETE); 6812 } 6813 6814 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6815 6816 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6817 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6818 ctsio->residual = 0; 6819 ctsio->kern_data_len = sizeof(*data); 6820 ctsio->kern_total_len = sizeof(*data); 6821 ctsio->kern_data_resid = 0; 6822 ctsio->kern_rel_offset = 0; 6823 ctsio->kern_sg_entries = 0; 6824 6825 /* 6826 * If the maximum LBA is greater than 0xfffffffe, the user must 6827 * issue a SERVICE ACTION IN (16) command, with the read capacity 6828 * serivce action set. 6829 */ 6830 if (lun->be_lun->maxlba > 0xfffffffe) 6831 scsi_ulto4b(0xffffffff, data->addr); 6832 else 6833 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6834 6835 /* 6836 * XXX KDM this may not be 512 bytes... 6837 */ 6838 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6839 6840 ctsio->scsi_status = SCSI_STATUS_OK; 6841 6842 ctsio->be_move_done = ctl_config_move_done; 6843 ctl_datamove((union ctl_io *)ctsio); 6844 6845 return (CTL_RETVAL_COMPLETE); 6846 } 6847 6848 static int 6849 ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6850 { 6851 struct scsi_read_capacity_16 *cdb; 6852 struct scsi_read_capacity_data_long *data; 6853 struct ctl_lun *lun; 6854 uint64_t lba; 6855 uint32_t alloc_len; 6856 6857 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6858 6859 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6860 6861 alloc_len = scsi_4btoul(cdb->alloc_len); 6862 lba = scsi_8btou64(cdb->addr); 6863 6864 if ((cdb->reladr & SRC16_PMI) 6865 && (lba != 0)) { 6866 ctl_set_invalid_field(/*ctsio*/ ctsio, 6867 /*sks_valid*/ 1, 6868 /*command*/ 1, 6869 /*field*/ 2, 6870 /*bit_valid*/ 0, 6871 /*bit*/ 0); 6872 ctl_done((union ctl_io *)ctsio); 6873 return (CTL_RETVAL_COMPLETE); 6874 } 6875 6876 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6877 6878 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6879 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6880 6881 if (sizeof(*data) < alloc_len) { 6882 ctsio->residual = alloc_len - sizeof(*data); 6883 ctsio->kern_data_len = sizeof(*data); 6884 ctsio->kern_total_len = sizeof(*data); 6885 } else { 6886 ctsio->residual = 0; 6887 ctsio->kern_data_len = alloc_len; 6888 ctsio->kern_total_len = alloc_len; 6889 } 6890 ctsio->kern_data_resid = 0; 6891 ctsio->kern_rel_offset = 0; 6892 ctsio->kern_sg_entries = 0; 6893 6894 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 6895 /* XXX KDM this may not be 512 bytes... */ 6896 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6897 6898 ctsio->scsi_status = SCSI_STATUS_OK; 6899 6900 ctsio->be_move_done = ctl_config_move_done; 6901 ctl_datamove((union ctl_io *)ctsio); 6902 6903 return (CTL_RETVAL_COMPLETE); 6904 } 6905 6906 int 6907 ctl_service_action_in(struct ctl_scsiio *ctsio) 6908 { 6909 struct scsi_service_action_in *cdb; 6910 int retval; 6911 6912 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 6913 6914 cdb = (struct scsi_service_action_in *)ctsio->cdb; 6915 6916 retval = CTL_RETVAL_COMPLETE; 6917 6918 switch (cdb->service_action) { 6919 case SRC16_SERVICE_ACTION: 6920 retval = ctl_read_capacity_16(ctsio); 6921 break; 6922 default: 6923 ctl_set_invalid_field(/*ctsio*/ ctsio, 6924 /*sks_valid*/ 1, 6925 /*command*/ 1, 6926 /*field*/ 1, 6927 /*bit_valid*/ 1, 6928 /*bit*/ 4); 6929 ctl_done((union ctl_io *)ctsio); 6930 break; 6931 } 6932 6933 return (retval); 6934 } 6935 6936 int 6937 ctl_maintenance_in(struct ctl_scsiio *ctsio) 6938 { 6939 struct scsi_maintenance_in *cdb; 6940 int retval; 6941 int alloc_len, total_len = 0; 6942 int num_target_port_groups, single; 6943 struct ctl_lun *lun; 6944 struct ctl_softc *softc; 6945 struct scsi_target_group_data *rtg_ptr; 6946 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 6947 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 6948 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 6949 6950 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 6951 6952 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 6953 softc = control_softc; 6954 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6955 6956 retval = CTL_RETVAL_COMPLETE; 6957 6958 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 6959 ctl_set_invalid_field(/*ctsio*/ ctsio, 6960 /*sks_valid*/ 1, 6961 /*command*/ 1, 6962 /*field*/ 1, 6963 /*bit_valid*/ 1, 6964 /*bit*/ 4); 6965 ctl_done((union ctl_io *)ctsio); 6966 return(retval); 6967 } 6968 6969 mtx_lock(&softc->ctl_lock); 6970 single = ctl_is_single; 6971 mtx_unlock(&softc->ctl_lock); 6972 6973 if (single) 6974 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 6975 else 6976 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 6977 6978 total_len = sizeof(struct scsi_target_group_data) + 6979 sizeof(struct scsi_target_port_group_descriptor) * 6980 num_target_port_groups + 6981 sizeof(struct scsi_target_port_descriptor) * 6982 NUM_PORTS_PER_GRP * num_target_port_groups; 6983 6984 alloc_len = scsi_4btoul(cdb->length); 6985 6986 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6987 6988 ctsio->kern_sg_entries = 0; 6989 6990 if (total_len < alloc_len) { 6991 ctsio->residual = alloc_len - total_len; 6992 ctsio->kern_data_len = total_len; 6993 ctsio->kern_total_len = total_len; 6994 } else { 6995 ctsio->residual = 0; 6996 ctsio->kern_data_len = alloc_len; 6997 ctsio->kern_total_len = alloc_len; 6998 } 6999 ctsio->kern_data_resid = 0; 7000 ctsio->kern_rel_offset = 0; 7001 7002 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7003 7004 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7005 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7006 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7007 &tp_desc_ptr1_1->desc_list[0]; 7008 7009 if (single == 0) { 7010 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7011 &tp_desc_ptr1_2->desc_list[0]; 7012 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7013 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7014 &tp_desc_ptr2_1->desc_list[0]; 7015 } else { 7016 tpg_desc_ptr2 = NULL; 7017 tp_desc_ptr2_1 = NULL; 7018 tp_desc_ptr2_2 = NULL; 7019 } 7020 7021 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7022 if (single == 0) { 7023 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7024 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7025 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7026 tpg_desc_ptr2->pref_state = 7027 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7028 } else { 7029 tpg_desc_ptr1->pref_state = 7030 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7031 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7032 } 7033 } else { 7034 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7035 tpg_desc_ptr1->pref_state = 7036 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7037 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7038 } else { 7039 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7040 tpg_desc_ptr2->pref_state = 7041 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7042 } 7043 } 7044 } else { 7045 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7046 } 7047 tpg_desc_ptr1->support = 0; 7048 tpg_desc_ptr1->target_port_group[1] = 1; 7049 tpg_desc_ptr1->status = TPG_IMPLICIT; 7050 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7051 7052 if (single == 0) { 7053 tpg_desc_ptr2->support = 0; 7054 tpg_desc_ptr2->target_port_group[1] = 2; 7055 tpg_desc_ptr2->status = TPG_IMPLICIT; 7056 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7057 7058 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7059 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7060 7061 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7062 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7063 } else { 7064 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7065 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7066 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7067 } else { 7068 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7069 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7070 } 7071 } 7072 7073 ctsio->be_move_done = ctl_config_move_done; 7074 7075 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7076 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7077 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7078 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7079 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7080 7081 ctl_datamove((union ctl_io *)ctsio); 7082 return(retval); 7083 } 7084 7085 int 7086 ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7087 { 7088 struct scsi_per_res_in *cdb; 7089 int alloc_len, total_len = 0; 7090 /* struct scsi_per_res_in_rsrv in_data; */ 7091 struct ctl_lun *lun; 7092 struct ctl_softc *softc; 7093 7094 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7095 7096 softc = control_softc; 7097 7098 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7099 7100 alloc_len = scsi_2btoul(cdb->length); 7101 7102 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7103 7104 retry: 7105 mtx_lock(&softc->ctl_lock); 7106 switch (cdb->action) { 7107 case SPRI_RK: /* read keys */ 7108 total_len = sizeof(struct scsi_per_res_in_keys) + 7109 lun->pr_key_count * 7110 sizeof(struct scsi_per_res_key); 7111 break; 7112 case SPRI_RR: /* read reservation */ 7113 if (lun->flags & CTL_LUN_PR_RESERVED) 7114 total_len = sizeof(struct scsi_per_res_in_rsrv); 7115 else 7116 total_len = sizeof(struct scsi_per_res_in_header); 7117 break; 7118 case SPRI_RC: /* report capabilities */ 7119 total_len = sizeof(struct scsi_per_res_cap); 7120 break; 7121 case SPRI_RS: /* read full status */ 7122 default: 7123 mtx_unlock(&softc->ctl_lock); 7124 ctl_set_invalid_field(ctsio, 7125 /*sks_valid*/ 1, 7126 /*command*/ 1, 7127 /*field*/ 1, 7128 /*bit_valid*/ 1, 7129 /*bit*/ 0); 7130 ctl_done((union ctl_io *)ctsio); 7131 return (CTL_RETVAL_COMPLETE); 7132 break; /* NOTREACHED */ 7133 } 7134 mtx_unlock(&softc->ctl_lock); 7135 7136 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7137 7138 if (total_len < alloc_len) { 7139 ctsio->residual = alloc_len - total_len; 7140 ctsio->kern_data_len = total_len; 7141 ctsio->kern_total_len = total_len; 7142 } else { 7143 ctsio->residual = 0; 7144 ctsio->kern_data_len = alloc_len; 7145 ctsio->kern_total_len = alloc_len; 7146 } 7147 7148 ctsio->kern_data_resid = 0; 7149 ctsio->kern_rel_offset = 0; 7150 ctsio->kern_sg_entries = 0; 7151 7152 mtx_lock(&softc->ctl_lock); 7153 switch (cdb->action) { 7154 case SPRI_RK: { // read keys 7155 struct scsi_per_res_in_keys *res_keys; 7156 int i, key_count; 7157 7158 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7159 7160 /* 7161 * We had to drop the lock to allocate our buffer, which 7162 * leaves time for someone to come in with another 7163 * persistent reservation. (That is unlikely, though, 7164 * since this should be the only persistent reservation 7165 * command active right now.) 7166 */ 7167 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7168 (lun->pr_key_count * 7169 sizeof(struct scsi_per_res_key)))){ 7170 mtx_unlock(&softc->ctl_lock); 7171 free(ctsio->kern_data_ptr, M_CTL); 7172 printf("%s: reservation length changed, retrying\n", 7173 __func__); 7174 goto retry; 7175 } 7176 7177 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7178 7179 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7180 lun->pr_key_count, res_keys->header.length); 7181 7182 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7183 if (!lun->per_res[i].registered) 7184 continue; 7185 7186 /* 7187 * We used lun->pr_key_count to calculate the 7188 * size to allocate. If it turns out the number of 7189 * initiators with the registered flag set is 7190 * larger than that (i.e. they haven't been kept in 7191 * sync), we've got a problem. 7192 */ 7193 if (key_count >= lun->pr_key_count) { 7194 #ifdef NEEDTOPORT 7195 csevent_log(CSC_CTL | CSC_SHELF_SW | 7196 CTL_PR_ERROR, 7197 csevent_LogType_Fault, 7198 csevent_AlertLevel_Yellow, 7199 csevent_FRU_ShelfController, 7200 csevent_FRU_Firmware, 7201 csevent_FRU_Unknown, 7202 "registered keys %d >= key " 7203 "count %d", key_count, 7204 lun->pr_key_count); 7205 #endif 7206 key_count++; 7207 continue; 7208 } 7209 memcpy(res_keys->keys[key_count].key, 7210 lun->per_res[i].res_key.key, 7211 ctl_min(sizeof(res_keys->keys[key_count].key), 7212 sizeof(lun->per_res[i].res_key))); 7213 key_count++; 7214 } 7215 break; 7216 } 7217 case SPRI_RR: { // read reservation 7218 struct scsi_per_res_in_rsrv *res; 7219 int tmp_len, header_only; 7220 7221 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7222 7223 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7224 7225 if (lun->flags & CTL_LUN_PR_RESERVED) 7226 { 7227 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7228 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7229 res->header.length); 7230 header_only = 0; 7231 } else { 7232 tmp_len = sizeof(struct scsi_per_res_in_header); 7233 scsi_ulto4b(0, res->header.length); 7234 header_only = 1; 7235 } 7236 7237 /* 7238 * We had to drop the lock to allocate our buffer, which 7239 * leaves time for someone to come in with another 7240 * persistent reservation. (That is unlikely, though, 7241 * since this should be the only persistent reservation 7242 * command active right now.) 7243 */ 7244 if (tmp_len != total_len) { 7245 mtx_unlock(&softc->ctl_lock); 7246 free(ctsio->kern_data_ptr, M_CTL); 7247 printf("%s: reservation status changed, retrying\n", 7248 __func__); 7249 goto retry; 7250 } 7251 7252 /* 7253 * No reservation held, so we're done. 7254 */ 7255 if (header_only != 0) 7256 break; 7257 7258 /* 7259 * If the registration is an All Registrants type, the key 7260 * is 0, since it doesn't really matter. 7261 */ 7262 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7263 memcpy(res->data.reservation, 7264 &lun->per_res[lun->pr_res_idx].res_key, 7265 sizeof(struct scsi_per_res_key)); 7266 } 7267 res->data.scopetype = lun->res_type; 7268 break; 7269 } 7270 case SPRI_RC: //report capabilities 7271 { 7272 struct scsi_per_res_cap *res_cap; 7273 uint16_t type_mask; 7274 7275 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7276 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7277 res_cap->flags2 |= SPRI_TMV; 7278 type_mask = SPRI_TM_WR_EX_AR | 7279 SPRI_TM_EX_AC_RO | 7280 SPRI_TM_WR_EX_RO | 7281 SPRI_TM_EX_AC | 7282 SPRI_TM_WR_EX | 7283 SPRI_TM_EX_AC_AR; 7284 scsi_ulto2b(type_mask, res_cap->type_mask); 7285 break; 7286 } 7287 case SPRI_RS: //read full status 7288 default: 7289 /* 7290 * This is a bug, because we just checked for this above, 7291 * and should have returned an error. 7292 */ 7293 panic("Invalid PR type %x", cdb->action); 7294 break; /* NOTREACHED */ 7295 } 7296 mtx_unlock(&softc->ctl_lock); 7297 7298 ctsio->be_move_done = ctl_config_move_done; 7299 7300 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7301 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7302 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7303 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7304 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7305 7306 ctl_datamove((union ctl_io *)ctsio); 7307 7308 return (CTL_RETVAL_COMPLETE); 7309 } 7310 7311 /* 7312 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7313 * it should return. 7314 */ 7315 static int 7316 ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7317 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7318 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7319 struct scsi_per_res_out_parms* param) 7320 { 7321 union ctl_ha_msg persis_io; 7322 int retval, i; 7323 int isc_retval; 7324 7325 retval = 0; 7326 7327 if (sa_res_key == 0) { 7328 mtx_lock(&softc->ctl_lock); 7329 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7330 /* validate scope and type */ 7331 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7332 SPR_LU_SCOPE) { 7333 mtx_unlock(&softc->ctl_lock); 7334 ctl_set_invalid_field(/*ctsio*/ ctsio, 7335 /*sks_valid*/ 1, 7336 /*command*/ 1, 7337 /*field*/ 2, 7338 /*bit_valid*/ 1, 7339 /*bit*/ 4); 7340 ctl_done((union ctl_io *)ctsio); 7341 return (1); 7342 } 7343 7344 if (type>8 || type==2 || type==4 || type==0) { 7345 mtx_unlock(&softc->ctl_lock); 7346 ctl_set_invalid_field(/*ctsio*/ ctsio, 7347 /*sks_valid*/ 1, 7348 /*command*/ 1, 7349 /*field*/ 2, 7350 /*bit_valid*/ 1, 7351 /*bit*/ 0); 7352 ctl_done((union ctl_io *)ctsio); 7353 return (1); 7354 } 7355 7356 /* temporarily unregister this nexus */ 7357 lun->per_res[residx].registered = 0; 7358 7359 /* 7360 * Unregister everybody else and build UA for 7361 * them 7362 */ 7363 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7364 if (lun->per_res[i].registered == 0) 7365 continue; 7366 7367 if (!persis_offset 7368 && i <CTL_MAX_INITIATORS) 7369 lun->pending_sense[i].ua_pending |= 7370 CTL_UA_REG_PREEMPT; 7371 else if (persis_offset 7372 && i >= persis_offset) 7373 lun->pending_sense[i-persis_offset 7374 ].ua_pending |= 7375 CTL_UA_REG_PREEMPT; 7376 lun->per_res[i].registered = 0; 7377 memset(&lun->per_res[i].res_key, 0, 7378 sizeof(struct scsi_per_res_key)); 7379 } 7380 lun->per_res[residx].registered = 1; 7381 lun->pr_key_count = 1; 7382 lun->res_type = type; 7383 if (lun->res_type != SPR_TYPE_WR_EX_AR 7384 && lun->res_type != SPR_TYPE_EX_AC_AR) 7385 lun->pr_res_idx = residx; 7386 7387 mtx_unlock(&softc->ctl_lock); 7388 /* send msg to other side */ 7389 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7390 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7391 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7392 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7393 persis_io.pr.pr_info.res_type = type; 7394 memcpy(persis_io.pr.pr_info.sa_res_key, 7395 param->serv_act_res_key, 7396 sizeof(param->serv_act_res_key)); 7397 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7398 &persis_io, sizeof(persis_io), 0)) > 7399 CTL_HA_STATUS_SUCCESS) { 7400 printf("CTL:Persis Out error returned " 7401 "from ctl_ha_msg_send %d\n", 7402 isc_retval); 7403 } 7404 } else { 7405 /* not all registrants */ 7406 mtx_unlock(&softc->ctl_lock); 7407 free(ctsio->kern_data_ptr, M_CTL); 7408 ctl_set_invalid_field(ctsio, 7409 /*sks_valid*/ 1, 7410 /*command*/ 0, 7411 /*field*/ 8, 7412 /*bit_valid*/ 0, 7413 /*bit*/ 0); 7414 ctl_done((union ctl_io *)ctsio); 7415 return (1); 7416 } 7417 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7418 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7419 int found = 0; 7420 7421 mtx_lock(&softc->ctl_lock); 7422 if (res_key == sa_res_key) { 7423 /* special case */ 7424 /* 7425 * The spec implies this is not good but doesn't 7426 * say what to do. There are two choices either 7427 * generate a res conflict or check condition 7428 * with illegal field in parameter data. Since 7429 * that is what is done when the sa_res_key is 7430 * zero I'll take that approach since this has 7431 * to do with the sa_res_key. 7432 */ 7433 mtx_unlock(&softc->ctl_lock); 7434 free(ctsio->kern_data_ptr, M_CTL); 7435 ctl_set_invalid_field(ctsio, 7436 /*sks_valid*/ 1, 7437 /*command*/ 0, 7438 /*field*/ 8, 7439 /*bit_valid*/ 0, 7440 /*bit*/ 0); 7441 ctl_done((union ctl_io *)ctsio); 7442 return (1); 7443 } 7444 7445 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7446 if (lun->per_res[i].registered 7447 && memcmp(param->serv_act_res_key, 7448 lun->per_res[i].res_key.key, 7449 sizeof(struct scsi_per_res_key)) != 0) 7450 continue; 7451 7452 found = 1; 7453 lun->per_res[i].registered = 0; 7454 memset(&lun->per_res[i].res_key, 0, 7455 sizeof(struct scsi_per_res_key)); 7456 lun->pr_key_count--; 7457 7458 if (!persis_offset 7459 && i < CTL_MAX_INITIATORS) 7460 lun->pending_sense[i].ua_pending |= 7461 CTL_UA_REG_PREEMPT; 7462 else if (persis_offset 7463 && i >= persis_offset) 7464 lun->pending_sense[i-persis_offset].ua_pending|= 7465 CTL_UA_REG_PREEMPT; 7466 } 7467 mtx_unlock(&softc->ctl_lock); 7468 if (!found) { 7469 free(ctsio->kern_data_ptr, M_CTL); 7470 ctl_set_reservation_conflict(ctsio); 7471 ctl_done((union ctl_io *)ctsio); 7472 return (CTL_RETVAL_COMPLETE); 7473 } 7474 /* send msg to other side */ 7475 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7476 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7477 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7478 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7479 persis_io.pr.pr_info.res_type = type; 7480 memcpy(persis_io.pr.pr_info.sa_res_key, 7481 param->serv_act_res_key, 7482 sizeof(param->serv_act_res_key)); 7483 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7484 &persis_io, sizeof(persis_io), 0)) > 7485 CTL_HA_STATUS_SUCCESS) { 7486 printf("CTL:Persis Out error returned from " 7487 "ctl_ha_msg_send %d\n", isc_retval); 7488 } 7489 } else { 7490 /* Reserved but not all registrants */ 7491 /* sa_res_key is res holder */ 7492 if (memcmp(param->serv_act_res_key, 7493 lun->per_res[lun->pr_res_idx].res_key.key, 7494 sizeof(struct scsi_per_res_key)) == 0) { 7495 /* validate scope and type */ 7496 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7497 SPR_LU_SCOPE) { 7498 ctl_set_invalid_field(/*ctsio*/ ctsio, 7499 /*sks_valid*/ 1, 7500 /*command*/ 1, 7501 /*field*/ 2, 7502 /*bit_valid*/ 1, 7503 /*bit*/ 4); 7504 ctl_done((union ctl_io *)ctsio); 7505 return (1); 7506 } 7507 7508 if (type>8 || type==2 || type==4 || type==0) { 7509 ctl_set_invalid_field(/*ctsio*/ ctsio, 7510 /*sks_valid*/ 1, 7511 /*command*/ 1, 7512 /*field*/ 2, 7513 /*bit_valid*/ 1, 7514 /*bit*/ 0); 7515 ctl_done((union ctl_io *)ctsio); 7516 return (1); 7517 } 7518 7519 /* 7520 * Do the following: 7521 * if sa_res_key != res_key remove all 7522 * registrants w/sa_res_key and generate UA 7523 * for these registrants(Registrations 7524 * Preempted) if it wasn't an exclusive 7525 * reservation generate UA(Reservations 7526 * Preempted) for all other registered nexuses 7527 * if the type has changed. Establish the new 7528 * reservation and holder. If res_key and 7529 * sa_res_key are the same do the above 7530 * except don't unregister the res holder. 7531 */ 7532 7533 /* 7534 * Temporarily unregister so it won't get 7535 * removed or UA generated 7536 */ 7537 lun->per_res[residx].registered = 0; 7538 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7539 if (lun->per_res[i].registered == 0) 7540 continue; 7541 7542 if (memcmp(param->serv_act_res_key, 7543 lun->per_res[i].res_key.key, 7544 sizeof(struct scsi_per_res_key)) == 0) { 7545 lun->per_res[i].registered = 0; 7546 memset(&lun->per_res[i].res_key, 7547 0, 7548 sizeof(struct scsi_per_res_key)); 7549 lun->pr_key_count--; 7550 7551 if (!persis_offset 7552 && i < CTL_MAX_INITIATORS) 7553 lun->pending_sense[i 7554 ].ua_pending |= 7555 CTL_UA_REG_PREEMPT; 7556 else if (persis_offset 7557 && i >= persis_offset) 7558 lun->pending_sense[ 7559 i-persis_offset].ua_pending |= 7560 CTL_UA_REG_PREEMPT; 7561 } else if (type != lun->res_type 7562 && (lun->res_type == SPR_TYPE_WR_EX_RO 7563 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7564 if (!persis_offset 7565 && i < CTL_MAX_INITIATORS) 7566 lun->pending_sense[i 7567 ].ua_pending |= 7568 CTL_UA_RES_RELEASE; 7569 else if (persis_offset 7570 && i >= persis_offset) 7571 lun->pending_sense[ 7572 i-persis_offset 7573 ].ua_pending |= 7574 CTL_UA_RES_RELEASE; 7575 } 7576 } 7577 lun->per_res[residx].registered = 1; 7578 lun->res_type = type; 7579 if (lun->res_type != SPR_TYPE_WR_EX_AR 7580 && lun->res_type != SPR_TYPE_EX_AC_AR) 7581 lun->pr_res_idx = residx; 7582 else 7583 lun->pr_res_idx = 7584 CTL_PR_ALL_REGISTRANTS; 7585 7586 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7587 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7588 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7589 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7590 persis_io.pr.pr_info.res_type = type; 7591 memcpy(persis_io.pr.pr_info.sa_res_key, 7592 param->serv_act_res_key, 7593 sizeof(param->serv_act_res_key)); 7594 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7595 &persis_io, sizeof(persis_io), 0)) > 7596 CTL_HA_STATUS_SUCCESS) { 7597 printf("CTL:Persis Out error returned " 7598 "from ctl_ha_msg_send %d\n", 7599 isc_retval); 7600 } 7601 } else { 7602 /* 7603 * sa_res_key is not the res holder just 7604 * remove registrants 7605 */ 7606 int found=0; 7607 mtx_lock(&softc->ctl_lock); 7608 7609 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7610 if (memcmp(param->serv_act_res_key, 7611 lun->per_res[i].res_key.key, 7612 sizeof(struct scsi_per_res_key)) != 0) 7613 continue; 7614 7615 found = 1; 7616 lun->per_res[i].registered = 0; 7617 memset(&lun->per_res[i].res_key, 0, 7618 sizeof(struct scsi_per_res_key)); 7619 lun->pr_key_count--; 7620 7621 if (!persis_offset 7622 && i < CTL_MAX_INITIATORS) 7623 lun->pending_sense[i].ua_pending |= 7624 CTL_UA_REG_PREEMPT; 7625 else if (persis_offset 7626 && i >= persis_offset) 7627 lun->pending_sense[ 7628 i-persis_offset].ua_pending |= 7629 CTL_UA_REG_PREEMPT; 7630 } 7631 7632 if (!found) { 7633 mtx_unlock(&softc->ctl_lock); 7634 free(ctsio->kern_data_ptr, M_CTL); 7635 ctl_set_reservation_conflict(ctsio); 7636 ctl_done((union ctl_io *)ctsio); 7637 return (1); 7638 } 7639 mtx_unlock(&softc->ctl_lock); 7640 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7641 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7642 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7643 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7644 persis_io.pr.pr_info.res_type = type; 7645 memcpy(persis_io.pr.pr_info.sa_res_key, 7646 param->serv_act_res_key, 7647 sizeof(param->serv_act_res_key)); 7648 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7649 &persis_io, sizeof(persis_io), 0)) > 7650 CTL_HA_STATUS_SUCCESS) { 7651 printf("CTL:Persis Out error returned " 7652 "from ctl_ha_msg_send %d\n", 7653 isc_retval); 7654 } 7655 } 7656 } 7657 7658 lun->PRGeneration++; 7659 7660 return (retval); 7661 } 7662 7663 static void 7664 ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7665 { 7666 int i; 7667 7668 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7669 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7670 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7671 msg->pr.pr_info.sa_res_key, 7672 sizeof(struct scsi_per_res_key)) != 0) { 7673 uint64_t sa_res_key; 7674 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7675 7676 if (sa_res_key == 0) { 7677 /* temporarily unregister this nexus */ 7678 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7679 7680 /* 7681 * Unregister everybody else and build UA for 7682 * them 7683 */ 7684 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7685 if (lun->per_res[i].registered == 0) 7686 continue; 7687 7688 if (!persis_offset 7689 && i < CTL_MAX_INITIATORS) 7690 lun->pending_sense[i].ua_pending |= 7691 CTL_UA_REG_PREEMPT; 7692 else if (persis_offset && i >= persis_offset) 7693 lun->pending_sense[i - 7694 persis_offset].ua_pending |= 7695 CTL_UA_REG_PREEMPT; 7696 lun->per_res[i].registered = 0; 7697 memset(&lun->per_res[i].res_key, 0, 7698 sizeof(struct scsi_per_res_key)); 7699 } 7700 7701 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7702 lun->pr_key_count = 1; 7703 lun->res_type = msg->pr.pr_info.res_type; 7704 if (lun->res_type != SPR_TYPE_WR_EX_AR 7705 && lun->res_type != SPR_TYPE_EX_AC_AR) 7706 lun->pr_res_idx = msg->pr.pr_info.residx; 7707 } else { 7708 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7709 if (memcmp(msg->pr.pr_info.sa_res_key, 7710 lun->per_res[i].res_key.key, 7711 sizeof(struct scsi_per_res_key)) != 0) 7712 continue; 7713 7714 lun->per_res[i].registered = 0; 7715 memset(&lun->per_res[i].res_key, 0, 7716 sizeof(struct scsi_per_res_key)); 7717 lun->pr_key_count--; 7718 7719 if (!persis_offset 7720 && i < persis_offset) 7721 lun->pending_sense[i].ua_pending |= 7722 CTL_UA_REG_PREEMPT; 7723 else if (persis_offset 7724 && i >= persis_offset) 7725 lun->pending_sense[i - 7726 persis_offset].ua_pending |= 7727 CTL_UA_REG_PREEMPT; 7728 } 7729 } 7730 } else { 7731 /* 7732 * Temporarily unregister so it won't get removed 7733 * or UA generated 7734 */ 7735 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7736 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7737 if (lun->per_res[i].registered == 0) 7738 continue; 7739 7740 if (memcmp(msg->pr.pr_info.sa_res_key, 7741 lun->per_res[i].res_key.key, 7742 sizeof(struct scsi_per_res_key)) == 0) { 7743 lun->per_res[i].registered = 0; 7744 memset(&lun->per_res[i].res_key, 0, 7745 sizeof(struct scsi_per_res_key)); 7746 lun->pr_key_count--; 7747 if (!persis_offset 7748 && i < CTL_MAX_INITIATORS) 7749 lun->pending_sense[i].ua_pending |= 7750 CTL_UA_REG_PREEMPT; 7751 else if (persis_offset 7752 && i >= persis_offset) 7753 lun->pending_sense[i - 7754 persis_offset].ua_pending |= 7755 CTL_UA_REG_PREEMPT; 7756 } else if (msg->pr.pr_info.res_type != lun->res_type 7757 && (lun->res_type == SPR_TYPE_WR_EX_RO 7758 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7759 if (!persis_offset 7760 && i < persis_offset) 7761 lun->pending_sense[i 7762 ].ua_pending |= 7763 CTL_UA_RES_RELEASE; 7764 else if (persis_offset 7765 && i >= persis_offset) 7766 lun->pending_sense[i - 7767 persis_offset].ua_pending |= 7768 CTL_UA_RES_RELEASE; 7769 } 7770 } 7771 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7772 lun->res_type = msg->pr.pr_info.res_type; 7773 if (lun->res_type != SPR_TYPE_WR_EX_AR 7774 && lun->res_type != SPR_TYPE_EX_AC_AR) 7775 lun->pr_res_idx = msg->pr.pr_info.residx; 7776 else 7777 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7778 } 7779 lun->PRGeneration++; 7780 7781 } 7782 7783 7784 int 7785 ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7786 { 7787 int retval; 7788 int isc_retval; 7789 u_int32_t param_len; 7790 struct scsi_per_res_out *cdb; 7791 struct ctl_lun *lun; 7792 struct scsi_per_res_out_parms* param; 7793 struct ctl_softc *softc; 7794 uint32_t residx; 7795 uint64_t res_key, sa_res_key; 7796 uint8_t type; 7797 union ctl_ha_msg persis_io; 7798 int i; 7799 7800 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7801 7802 retval = CTL_RETVAL_COMPLETE; 7803 7804 softc = control_softc; 7805 7806 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7807 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7808 7809 /* 7810 * We only support whole-LUN scope. The scope & type are ignored for 7811 * register, register and ignore existing key and clear. 7812 * We sometimes ignore scope and type on preempts too!! 7813 * Verify reservation type here as well. 7814 */ 7815 type = cdb->scope_type & SPR_TYPE_MASK; 7816 if ((cdb->action == SPRO_RESERVE) 7817 || (cdb->action == SPRO_RELEASE)) { 7818 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7819 ctl_set_invalid_field(/*ctsio*/ ctsio, 7820 /*sks_valid*/ 1, 7821 /*command*/ 1, 7822 /*field*/ 2, 7823 /*bit_valid*/ 1, 7824 /*bit*/ 4); 7825 ctl_done((union ctl_io *)ctsio); 7826 return (CTL_RETVAL_COMPLETE); 7827 } 7828 7829 if (type>8 || type==2 || type==4 || type==0) { 7830 ctl_set_invalid_field(/*ctsio*/ ctsio, 7831 /*sks_valid*/ 1, 7832 /*command*/ 1, 7833 /*field*/ 2, 7834 /*bit_valid*/ 1, 7835 /*bit*/ 0); 7836 ctl_done((union ctl_io *)ctsio); 7837 return (CTL_RETVAL_COMPLETE); 7838 } 7839 } 7840 7841 switch (cdb->action & SPRO_ACTION_MASK) { 7842 case SPRO_REGISTER: 7843 case SPRO_RESERVE: 7844 case SPRO_RELEASE: 7845 case SPRO_CLEAR: 7846 case SPRO_PREEMPT: 7847 case SPRO_REG_IGNO: 7848 break; 7849 case SPRO_REG_MOVE: 7850 case SPRO_PRE_ABO: 7851 default: 7852 ctl_set_invalid_field(/*ctsio*/ ctsio, 7853 /*sks_valid*/ 1, 7854 /*command*/ 1, 7855 /*field*/ 1, 7856 /*bit_valid*/ 1, 7857 /*bit*/ 0); 7858 ctl_done((union ctl_io *)ctsio); 7859 return (CTL_RETVAL_COMPLETE); 7860 break; /* NOTREACHED */ 7861 } 7862 7863 param_len = scsi_4btoul(cdb->length); 7864 7865 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7866 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7867 ctsio->kern_data_len = param_len; 7868 ctsio->kern_total_len = param_len; 7869 ctsio->kern_data_resid = 0; 7870 ctsio->kern_rel_offset = 0; 7871 ctsio->kern_sg_entries = 0; 7872 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7873 ctsio->be_move_done = ctl_config_move_done; 7874 ctl_datamove((union ctl_io *)ctsio); 7875 7876 return (CTL_RETVAL_COMPLETE); 7877 } 7878 7879 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7880 7881 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7882 res_key = scsi_8btou64(param->res_key.key); 7883 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7884 7885 /* 7886 * Validate the reservation key here except for SPRO_REG_IGNO 7887 * This must be done for all other service actions 7888 */ 7889 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 7890 mtx_lock(&softc->ctl_lock); 7891 if (lun->per_res[residx].registered) { 7892 if (memcmp(param->res_key.key, 7893 lun->per_res[residx].res_key.key, 7894 ctl_min(sizeof(param->res_key), 7895 sizeof(lun->per_res[residx].res_key))) != 0) { 7896 /* 7897 * The current key passed in doesn't match 7898 * the one the initiator previously 7899 * registered. 7900 */ 7901 mtx_unlock(&softc->ctl_lock); 7902 free(ctsio->kern_data_ptr, M_CTL); 7903 ctl_set_reservation_conflict(ctsio); 7904 ctl_done((union ctl_io *)ctsio); 7905 return (CTL_RETVAL_COMPLETE); 7906 } 7907 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 7908 /* 7909 * We are not registered 7910 */ 7911 mtx_unlock(&softc->ctl_lock); 7912 free(ctsio->kern_data_ptr, M_CTL); 7913 ctl_set_reservation_conflict(ctsio); 7914 ctl_done((union ctl_io *)ctsio); 7915 return (CTL_RETVAL_COMPLETE); 7916 } else if (res_key != 0) { 7917 /* 7918 * We are not registered and trying to register but 7919 * the register key isn't zero. 7920 */ 7921 mtx_unlock(&softc->ctl_lock); 7922 free(ctsio->kern_data_ptr, M_CTL); 7923 ctl_set_reservation_conflict(ctsio); 7924 ctl_done((union ctl_io *)ctsio); 7925 return (CTL_RETVAL_COMPLETE); 7926 } 7927 mtx_unlock(&softc->ctl_lock); 7928 } 7929 7930 switch (cdb->action & SPRO_ACTION_MASK) { 7931 case SPRO_REGISTER: 7932 case SPRO_REG_IGNO: { 7933 7934 #if 0 7935 printf("Registration received\n"); 7936 #endif 7937 7938 /* 7939 * We don't support any of these options, as we report in 7940 * the read capabilities request (see 7941 * ctl_persistent_reserve_in(), above). 7942 */ 7943 if ((param->flags & SPR_SPEC_I_PT) 7944 || (param->flags & SPR_ALL_TG_PT) 7945 || (param->flags & SPR_APTPL)) { 7946 int bit_ptr; 7947 7948 if (param->flags & SPR_APTPL) 7949 bit_ptr = 0; 7950 else if (param->flags & SPR_ALL_TG_PT) 7951 bit_ptr = 2; 7952 else /* SPR_SPEC_I_PT */ 7953 bit_ptr = 3; 7954 7955 free(ctsio->kern_data_ptr, M_CTL); 7956 ctl_set_invalid_field(ctsio, 7957 /*sks_valid*/ 1, 7958 /*command*/ 0, 7959 /*field*/ 20, 7960 /*bit_valid*/ 1, 7961 /*bit*/ bit_ptr); 7962 ctl_done((union ctl_io *)ctsio); 7963 return (CTL_RETVAL_COMPLETE); 7964 } 7965 7966 mtx_lock(&softc->ctl_lock); 7967 7968 /* 7969 * The initiator wants to clear the 7970 * key/unregister. 7971 */ 7972 if (sa_res_key == 0) { 7973 if ((res_key == 0 7974 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 7975 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 7976 && !lun->per_res[residx].registered)) { 7977 mtx_unlock(&softc->ctl_lock); 7978 goto done; 7979 } 7980 7981 lun->per_res[residx].registered = 0; 7982 memset(&lun->per_res[residx].res_key, 7983 0, sizeof(lun->per_res[residx].res_key)); 7984 lun->pr_key_count--; 7985 7986 if (residx == lun->pr_res_idx) { 7987 lun->flags &= ~CTL_LUN_PR_RESERVED; 7988 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 7989 7990 if ((lun->res_type == SPR_TYPE_WR_EX_RO 7991 || lun->res_type == SPR_TYPE_EX_AC_RO) 7992 && lun->pr_key_count) { 7993 /* 7994 * If the reservation is a registrants 7995 * only type we need to generate a UA 7996 * for other registered inits. The 7997 * sense code should be RESERVATIONS 7998 * RELEASED 7999 */ 8000 8001 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8002 if (lun->per_res[ 8003 i+persis_offset].registered 8004 == 0) 8005 continue; 8006 lun->pending_sense[i 8007 ].ua_pending |= 8008 CTL_UA_RES_RELEASE; 8009 } 8010 } 8011 lun->res_type = 0; 8012 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8013 if (lun->pr_key_count==0) { 8014 lun->flags &= ~CTL_LUN_PR_RESERVED; 8015 lun->res_type = 0; 8016 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8017 } 8018 } 8019 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8020 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8021 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8022 persis_io.pr.pr_info.residx = residx; 8023 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8024 &persis_io, sizeof(persis_io), 0 )) > 8025 CTL_HA_STATUS_SUCCESS) { 8026 printf("CTL:Persis Out error returned from " 8027 "ctl_ha_msg_send %d\n", isc_retval); 8028 } 8029 mtx_unlock(&softc->ctl_lock); 8030 } else /* sa_res_key != 0 */ { 8031 8032 /* 8033 * If we aren't registered currently then increment 8034 * the key count and set the registered flag. 8035 */ 8036 if (!lun->per_res[residx].registered) { 8037 lun->pr_key_count++; 8038 lun->per_res[residx].registered = 1; 8039 } 8040 8041 memcpy(&lun->per_res[residx].res_key, 8042 param->serv_act_res_key, 8043 ctl_min(sizeof(param->serv_act_res_key), 8044 sizeof(lun->per_res[residx].res_key))); 8045 8046 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8047 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8048 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8049 persis_io.pr.pr_info.residx = residx; 8050 memcpy(persis_io.pr.pr_info.sa_res_key, 8051 param->serv_act_res_key, 8052 sizeof(param->serv_act_res_key)); 8053 mtx_unlock(&softc->ctl_lock); 8054 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8055 &persis_io, sizeof(persis_io), 0)) > 8056 CTL_HA_STATUS_SUCCESS) { 8057 printf("CTL:Persis Out error returned from " 8058 "ctl_ha_msg_send %d\n", isc_retval); 8059 } 8060 } 8061 lun->PRGeneration++; 8062 8063 break; 8064 } 8065 case SPRO_RESERVE: 8066 #if 0 8067 printf("Reserve executed type %d\n", type); 8068 #endif 8069 mtx_lock(&softc->ctl_lock); 8070 if (lun->flags & CTL_LUN_PR_RESERVED) { 8071 /* 8072 * if this isn't the reservation holder and it's 8073 * not a "all registrants" type or if the type is 8074 * different then we have a conflict 8075 */ 8076 if ((lun->pr_res_idx != residx 8077 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8078 || lun->res_type != type) { 8079 mtx_unlock(&softc->ctl_lock); 8080 free(ctsio->kern_data_ptr, M_CTL); 8081 ctl_set_reservation_conflict(ctsio); 8082 ctl_done((union ctl_io *)ctsio); 8083 return (CTL_RETVAL_COMPLETE); 8084 } 8085 } else /* create a reservation */ { 8086 /* 8087 * If it's not an "all registrants" type record 8088 * reservation holder 8089 */ 8090 if (type != SPR_TYPE_WR_EX_AR 8091 && type != SPR_TYPE_EX_AC_AR) 8092 lun->pr_res_idx = residx; /* Res holder */ 8093 else 8094 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8095 8096 lun->flags |= CTL_LUN_PR_RESERVED; 8097 lun->res_type = type; 8098 8099 mtx_unlock(&softc->ctl_lock); 8100 8101 /* send msg to other side */ 8102 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8103 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8104 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8105 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8106 persis_io.pr.pr_info.res_type = type; 8107 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8108 &persis_io, sizeof(persis_io), 0)) > 8109 CTL_HA_STATUS_SUCCESS) { 8110 printf("CTL:Persis Out error returned from " 8111 "ctl_ha_msg_send %d\n", isc_retval); 8112 } 8113 } 8114 break; 8115 8116 case SPRO_RELEASE: 8117 mtx_lock(&softc->ctl_lock); 8118 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8119 /* No reservation exists return good status */ 8120 mtx_unlock(&softc->ctl_lock); 8121 goto done; 8122 } 8123 /* 8124 * Is this nexus a reservation holder? 8125 */ 8126 if (lun->pr_res_idx != residx 8127 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8128 /* 8129 * not a res holder return good status but 8130 * do nothing 8131 */ 8132 mtx_unlock(&softc->ctl_lock); 8133 goto done; 8134 } 8135 8136 if (lun->res_type != type) { 8137 mtx_unlock(&softc->ctl_lock); 8138 free(ctsio->kern_data_ptr, M_CTL); 8139 ctl_set_illegal_pr_release(ctsio); 8140 ctl_done((union ctl_io *)ctsio); 8141 return (CTL_RETVAL_COMPLETE); 8142 } 8143 8144 /* okay to release */ 8145 lun->flags &= ~CTL_LUN_PR_RESERVED; 8146 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8147 lun->res_type = 0; 8148 8149 /* 8150 * if this isn't an exclusive access 8151 * res generate UA for all other 8152 * registrants. 8153 */ 8154 if (type != SPR_TYPE_EX_AC 8155 && type != SPR_TYPE_WR_EX) { 8156 /* 8157 * temporarily unregister so we don't generate UA 8158 */ 8159 lun->per_res[residx].registered = 0; 8160 8161 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8162 if (lun->per_res[i+persis_offset].registered 8163 == 0) 8164 continue; 8165 lun->pending_sense[i].ua_pending |= 8166 CTL_UA_RES_RELEASE; 8167 } 8168 8169 lun->per_res[residx].registered = 1; 8170 } 8171 mtx_unlock(&softc->ctl_lock); 8172 /* Send msg to other side */ 8173 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8174 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8175 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8176 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8177 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8178 printf("CTL:Persis Out error returned from " 8179 "ctl_ha_msg_send %d\n", isc_retval); 8180 } 8181 break; 8182 8183 case SPRO_CLEAR: 8184 /* send msg to other side */ 8185 8186 mtx_lock(&softc->ctl_lock); 8187 lun->flags &= ~CTL_LUN_PR_RESERVED; 8188 lun->res_type = 0; 8189 lun->pr_key_count = 0; 8190 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8191 8192 8193 memset(&lun->per_res[residx].res_key, 8194 0, sizeof(lun->per_res[residx].res_key)); 8195 lun->per_res[residx].registered = 0; 8196 8197 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8198 if (lun->per_res[i].registered) { 8199 if (!persis_offset && i < CTL_MAX_INITIATORS) 8200 lun->pending_sense[i].ua_pending |= 8201 CTL_UA_RES_PREEMPT; 8202 else if (persis_offset && i >= persis_offset) 8203 lun->pending_sense[i-persis_offset 8204 ].ua_pending |= CTL_UA_RES_PREEMPT; 8205 8206 memset(&lun->per_res[i].res_key, 8207 0, sizeof(struct scsi_per_res_key)); 8208 lun->per_res[i].registered = 0; 8209 } 8210 lun->PRGeneration++; 8211 mtx_unlock(&softc->ctl_lock); 8212 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8213 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8214 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8215 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8216 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8217 printf("CTL:Persis Out error returned from " 8218 "ctl_ha_msg_send %d\n", isc_retval); 8219 } 8220 break; 8221 8222 case SPRO_PREEMPT: { 8223 int nretval; 8224 8225 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8226 residx, ctsio, cdb, param); 8227 if (nretval != 0) 8228 return (CTL_RETVAL_COMPLETE); 8229 break; 8230 } 8231 case SPRO_REG_MOVE: 8232 case SPRO_PRE_ABO: 8233 default: 8234 free(ctsio->kern_data_ptr, M_CTL); 8235 ctl_set_invalid_field(/*ctsio*/ ctsio, 8236 /*sks_valid*/ 1, 8237 /*command*/ 1, 8238 /*field*/ 1, 8239 /*bit_valid*/ 1, 8240 /*bit*/ 0); 8241 ctl_done((union ctl_io *)ctsio); 8242 return (CTL_RETVAL_COMPLETE); 8243 break; /* NOTREACHED */ 8244 } 8245 8246 done: 8247 free(ctsio->kern_data_ptr, M_CTL); 8248 ctl_set_success(ctsio); 8249 ctl_done((union ctl_io *)ctsio); 8250 8251 return (retval); 8252 } 8253 8254 /* 8255 * This routine is for handling a message from the other SC pertaining to 8256 * persistent reserve out. All the error checking will have been done 8257 * so only perorming the action need be done here to keep the two 8258 * in sync. 8259 */ 8260 static void 8261 ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8262 { 8263 struct ctl_lun *lun; 8264 struct ctl_softc *softc; 8265 int i; 8266 uint32_t targ_lun; 8267 8268 softc = control_softc; 8269 8270 mtx_lock(&softc->ctl_lock); 8271 8272 targ_lun = msg->hdr.nexus.targ_lun; 8273 if (msg->hdr.nexus.lun_map_fn != NULL) 8274 targ_lun = msg->hdr.nexus.lun_map_fn(msg->hdr.nexus.lun_map_arg, targ_lun); 8275 lun = softc->ctl_luns[targ_lun]; 8276 switch(msg->pr.pr_info.action) { 8277 case CTL_PR_REG_KEY: 8278 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8279 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8280 lun->pr_key_count++; 8281 } 8282 lun->PRGeneration++; 8283 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8284 msg->pr.pr_info.sa_res_key, 8285 sizeof(struct scsi_per_res_key)); 8286 break; 8287 8288 case CTL_PR_UNREG_KEY: 8289 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8290 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8291 0, sizeof(struct scsi_per_res_key)); 8292 lun->pr_key_count--; 8293 8294 /* XXX Need to see if the reservation has been released */ 8295 /* if so do we need to generate UA? */ 8296 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8297 lun->flags &= ~CTL_LUN_PR_RESERVED; 8298 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8299 8300 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8301 || lun->res_type == SPR_TYPE_EX_AC_RO) 8302 && lun->pr_key_count) { 8303 /* 8304 * If the reservation is a registrants 8305 * only type we need to generate a UA 8306 * for other registered inits. The 8307 * sense code should be RESERVATIONS 8308 * RELEASED 8309 */ 8310 8311 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8312 if (lun->per_res[i+ 8313 persis_offset].registered == 0) 8314 continue; 8315 8316 lun->pending_sense[i 8317 ].ua_pending |= 8318 CTL_UA_RES_RELEASE; 8319 } 8320 } 8321 lun->res_type = 0; 8322 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8323 if (lun->pr_key_count==0) { 8324 lun->flags &= ~CTL_LUN_PR_RESERVED; 8325 lun->res_type = 0; 8326 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8327 } 8328 } 8329 lun->PRGeneration++; 8330 break; 8331 8332 case CTL_PR_RESERVE: 8333 lun->flags |= CTL_LUN_PR_RESERVED; 8334 lun->res_type = msg->pr.pr_info.res_type; 8335 lun->pr_res_idx = msg->pr.pr_info.residx; 8336 8337 break; 8338 8339 case CTL_PR_RELEASE: 8340 /* 8341 * if this isn't an exclusive access res generate UA for all 8342 * other registrants. 8343 */ 8344 if (lun->res_type != SPR_TYPE_EX_AC 8345 && lun->res_type != SPR_TYPE_WR_EX) { 8346 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8347 if (lun->per_res[i+persis_offset].registered) 8348 lun->pending_sense[i].ua_pending |= 8349 CTL_UA_RES_RELEASE; 8350 } 8351 8352 lun->flags &= ~CTL_LUN_PR_RESERVED; 8353 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8354 lun->res_type = 0; 8355 break; 8356 8357 case CTL_PR_PREEMPT: 8358 ctl_pro_preempt_other(lun, msg); 8359 break; 8360 case CTL_PR_CLEAR: 8361 lun->flags &= ~CTL_LUN_PR_RESERVED; 8362 lun->res_type = 0; 8363 lun->pr_key_count = 0; 8364 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8365 8366 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8367 if (lun->per_res[i].registered == 0) 8368 continue; 8369 if (!persis_offset 8370 && i < CTL_MAX_INITIATORS) 8371 lun->pending_sense[i].ua_pending |= 8372 CTL_UA_RES_PREEMPT; 8373 else if (persis_offset 8374 && i >= persis_offset) 8375 lun->pending_sense[i-persis_offset].ua_pending|= 8376 CTL_UA_RES_PREEMPT; 8377 memset(&lun->per_res[i].res_key, 0, 8378 sizeof(struct scsi_per_res_key)); 8379 lun->per_res[i].registered = 0; 8380 } 8381 lun->PRGeneration++; 8382 break; 8383 } 8384 8385 mtx_unlock(&softc->ctl_lock); 8386 } 8387 8388 int 8389 ctl_read_write(struct ctl_scsiio *ctsio) 8390 { 8391 struct ctl_lun *lun; 8392 struct ctl_lba_len lbalen; 8393 uint64_t lba; 8394 uint32_t num_blocks; 8395 int reladdr, fua, dpo, ebp; 8396 int retval; 8397 int isread; 8398 8399 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8400 8401 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8402 8403 reladdr = 0; 8404 fua = 0; 8405 dpo = 0; 8406 ebp = 0; 8407 8408 retval = CTL_RETVAL_COMPLETE; 8409 8410 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8411 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8412 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8413 uint32_t residx; 8414 8415 /* 8416 * XXX KDM need a lock here. 8417 */ 8418 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8419 if ((lun->res_type == SPR_TYPE_EX_AC 8420 && residx != lun->pr_res_idx) 8421 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8422 || lun->res_type == SPR_TYPE_EX_AC_AR) 8423 && !lun->per_res[residx].registered)) { 8424 ctl_set_reservation_conflict(ctsio); 8425 ctl_done((union ctl_io *)ctsio); 8426 return (CTL_RETVAL_COMPLETE); 8427 } 8428 } 8429 8430 switch (ctsio->cdb[0]) { 8431 case READ_6: 8432 case WRITE_6: { 8433 struct scsi_rw_6 *cdb; 8434 8435 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8436 8437 lba = scsi_3btoul(cdb->addr); 8438 /* only 5 bits are valid in the most significant address byte */ 8439 lba &= 0x1fffff; 8440 num_blocks = cdb->length; 8441 /* 8442 * This is correct according to SBC-2. 8443 */ 8444 if (num_blocks == 0) 8445 num_blocks = 256; 8446 break; 8447 } 8448 case READ_10: 8449 case WRITE_10: { 8450 struct scsi_rw_10 *cdb; 8451 8452 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8453 8454 if (cdb->byte2 & SRW10_RELADDR) 8455 reladdr = 1; 8456 if (cdb->byte2 & SRW10_FUA) 8457 fua = 1; 8458 if (cdb->byte2 & SRW10_DPO) 8459 dpo = 1; 8460 8461 if ((cdb->opcode == WRITE_10) 8462 && (cdb->byte2 & SRW10_EBP)) 8463 ebp = 1; 8464 8465 lba = scsi_4btoul(cdb->addr); 8466 num_blocks = scsi_2btoul(cdb->length); 8467 break; 8468 } 8469 case WRITE_VERIFY_10: { 8470 struct scsi_write_verify_10 *cdb; 8471 8472 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8473 8474 /* 8475 * XXX KDM we should do actual write verify support at some 8476 * point. This is obviously fake, we're just translating 8477 * things to a write. So we don't even bother checking the 8478 * BYTCHK field, since we don't do any verification. If 8479 * the user asks for it, we'll just pretend we did it. 8480 */ 8481 if (cdb->byte2 & SWV_DPO) 8482 dpo = 1; 8483 8484 lba = scsi_4btoul(cdb->addr); 8485 num_blocks = scsi_2btoul(cdb->length); 8486 break; 8487 } 8488 case READ_12: 8489 case WRITE_12: { 8490 struct scsi_rw_12 *cdb; 8491 8492 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8493 8494 if (cdb->byte2 & SRW12_RELADDR) 8495 reladdr = 1; 8496 if (cdb->byte2 & SRW12_FUA) 8497 fua = 1; 8498 if (cdb->byte2 & SRW12_DPO) 8499 dpo = 1; 8500 lba = scsi_4btoul(cdb->addr); 8501 num_blocks = scsi_4btoul(cdb->length); 8502 break; 8503 } 8504 case WRITE_VERIFY_12: { 8505 struct scsi_write_verify_12 *cdb; 8506 8507 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8508 8509 if (cdb->byte2 & SWV_DPO) 8510 dpo = 1; 8511 8512 lba = scsi_4btoul(cdb->addr); 8513 num_blocks = scsi_4btoul(cdb->length); 8514 8515 break; 8516 } 8517 case READ_16: 8518 case WRITE_16: { 8519 struct scsi_rw_16 *cdb; 8520 8521 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8522 8523 if (cdb->byte2 & SRW12_RELADDR) 8524 reladdr = 1; 8525 if (cdb->byte2 & SRW12_FUA) 8526 fua = 1; 8527 if (cdb->byte2 & SRW12_DPO) 8528 dpo = 1; 8529 8530 lba = scsi_8btou64(cdb->addr); 8531 num_blocks = scsi_4btoul(cdb->length); 8532 break; 8533 } 8534 case WRITE_VERIFY_16: { 8535 struct scsi_write_verify_16 *cdb; 8536 8537 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8538 8539 if (cdb->byte2 & SWV_DPO) 8540 dpo = 1; 8541 8542 lba = scsi_8btou64(cdb->addr); 8543 num_blocks = scsi_4btoul(cdb->length); 8544 break; 8545 } 8546 default: 8547 /* 8548 * We got a command we don't support. This shouldn't 8549 * happen, commands should be filtered out above us. 8550 */ 8551 ctl_set_invalid_opcode(ctsio); 8552 ctl_done((union ctl_io *)ctsio); 8553 8554 return (CTL_RETVAL_COMPLETE); 8555 break; /* NOTREACHED */ 8556 } 8557 8558 /* 8559 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8560 * interesting for us, but if RAIDCore is in write-back mode, 8561 * getting it to do write-through for a particular transaction may 8562 * not be possible. 8563 */ 8564 /* 8565 * We don't support relative addressing. That also requires 8566 * supporting linked commands, which we don't do. 8567 */ 8568 if (reladdr != 0) { 8569 ctl_set_invalid_field(ctsio, 8570 /*sks_valid*/ 1, 8571 /*command*/ 1, 8572 /*field*/ 1, 8573 /*bit_valid*/ 1, 8574 /*bit*/ 0); 8575 ctl_done((union ctl_io *)ctsio); 8576 return (CTL_RETVAL_COMPLETE); 8577 } 8578 8579 /* 8580 * The first check is to make sure we're in bounds, the second 8581 * check is to catch wrap-around problems. If the lba + num blocks 8582 * is less than the lba, then we've wrapped around and the block 8583 * range is invalid anyway. 8584 */ 8585 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8586 || ((lba + num_blocks) < lba)) { 8587 ctl_set_lba_out_of_range(ctsio); 8588 ctl_done((union ctl_io *)ctsio); 8589 return (CTL_RETVAL_COMPLETE); 8590 } 8591 8592 /* 8593 * According to SBC-3, a transfer length of 0 is not an error. 8594 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8595 * translates to 256 blocks for those commands. 8596 */ 8597 if (num_blocks == 0) { 8598 ctl_set_success(ctsio); 8599 ctl_done((union ctl_io *)ctsio); 8600 return (CTL_RETVAL_COMPLETE); 8601 } 8602 8603 lbalen.lba = lba; 8604 lbalen.len = num_blocks; 8605 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8606 sizeof(lbalen)); 8607 8608 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8609 8610 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8611 8612 return (retval); 8613 } 8614 8615 int 8616 ctl_report_luns(struct ctl_scsiio *ctsio) 8617 { 8618 struct scsi_report_luns *cdb; 8619 struct scsi_report_luns_data *lun_data; 8620 struct ctl_lun *lun, *request_lun; 8621 int num_luns, retval; 8622 uint32_t alloc_len, lun_datalen; 8623 int num_filled, well_known; 8624 uint32_t initidx, targ_lun_id, lun_id; 8625 8626 retval = CTL_RETVAL_COMPLETE; 8627 well_known = 0; 8628 8629 cdb = (struct scsi_report_luns *)ctsio->cdb; 8630 8631 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8632 8633 mtx_lock(&control_softc->ctl_lock); 8634 num_luns = control_softc->num_luns; 8635 mtx_unlock(&control_softc->ctl_lock); 8636 8637 switch (cdb->select_report) { 8638 case RPL_REPORT_DEFAULT: 8639 case RPL_REPORT_ALL: 8640 break; 8641 case RPL_REPORT_WELLKNOWN: 8642 well_known = 1; 8643 num_luns = 0; 8644 break; 8645 default: 8646 ctl_set_invalid_field(ctsio, 8647 /*sks_valid*/ 1, 8648 /*command*/ 1, 8649 /*field*/ 2, 8650 /*bit_valid*/ 0, 8651 /*bit*/ 0); 8652 ctl_done((union ctl_io *)ctsio); 8653 return (retval); 8654 break; /* NOTREACHED */ 8655 } 8656 8657 alloc_len = scsi_4btoul(cdb->length); 8658 /* 8659 * The initiator has to allocate at least 16 bytes for this request, 8660 * so he can at least get the header and the first LUN. Otherwise 8661 * we reject the request (per SPC-3 rev 14, section 6.21). 8662 */ 8663 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8664 sizeof(struct scsi_report_luns_lundata))) { 8665 ctl_set_invalid_field(ctsio, 8666 /*sks_valid*/ 1, 8667 /*command*/ 1, 8668 /*field*/ 6, 8669 /*bit_valid*/ 0, 8670 /*bit*/ 0); 8671 ctl_done((union ctl_io *)ctsio); 8672 return (retval); 8673 } 8674 8675 request_lun = (struct ctl_lun *) 8676 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8677 8678 lun_datalen = sizeof(*lun_data) + 8679 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8680 8681 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 8682 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8683 ctsio->kern_sg_entries = 0; 8684 8685 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8686 8687 mtx_lock(&control_softc->ctl_lock); 8688 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 8689 lun_id = targ_lun_id; 8690 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 8691 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 8692 if (lun_id >= CTL_MAX_LUNS) 8693 continue; 8694 lun = control_softc->ctl_luns[lun_id]; 8695 if (lun == NULL) 8696 continue; 8697 8698 if (targ_lun_id <= 0xff) { 8699 /* 8700 * Peripheral addressing method, bus number 0. 8701 */ 8702 lun_data->luns[num_filled].lundata[0] = 8703 RPL_LUNDATA_ATYP_PERIPH; 8704 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 8705 num_filled++; 8706 } else if (targ_lun_id <= 0x3fff) { 8707 /* 8708 * Flat addressing method. 8709 */ 8710 lun_data->luns[num_filled].lundata[0] = 8711 RPL_LUNDATA_ATYP_FLAT | 8712 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 8713 #ifdef OLDCTLHEADERS 8714 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8715 (targ_lun_id & SRLD_BUS_LUN_MASK); 8716 #endif 8717 lun_data->luns[num_filled].lundata[1] = 8718 #ifdef OLDCTLHEADERS 8719 targ_lun_id >> SRLD_BUS_LUN_BITS; 8720 #endif 8721 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 8722 num_filled++; 8723 } else { 8724 printf("ctl_report_luns: bogus LUN number %jd, " 8725 "skipping\n", (intmax_t)targ_lun_id); 8726 } 8727 /* 8728 * According to SPC-3, rev 14 section 6.21: 8729 * 8730 * "The execution of a REPORT LUNS command to any valid and 8731 * installed logical unit shall clear the REPORTED LUNS DATA 8732 * HAS CHANGED unit attention condition for all logical 8733 * units of that target with respect to the requesting 8734 * initiator. A valid and installed logical unit is one 8735 * having a PERIPHERAL QUALIFIER of 000b in the standard 8736 * INQUIRY data (see 6.4.2)." 8737 * 8738 * If request_lun is NULL, the LUN this report luns command 8739 * was issued to is either disabled or doesn't exist. In that 8740 * case, we shouldn't clear any pending lun change unit 8741 * attention. 8742 */ 8743 if (request_lun != NULL) 8744 lun->pending_sense[initidx].ua_pending &= 8745 ~CTL_UA_LUN_CHANGE; 8746 } 8747 mtx_unlock(&control_softc->ctl_lock); 8748 8749 /* 8750 * It's quite possible that we've returned fewer LUNs than we allocated 8751 * space for. Trim it. 8752 */ 8753 lun_datalen = sizeof(*lun_data) + 8754 (num_filled * sizeof(struct scsi_report_luns_lundata)); 8755 8756 if (lun_datalen < alloc_len) { 8757 ctsio->residual = alloc_len - lun_datalen; 8758 ctsio->kern_data_len = lun_datalen; 8759 ctsio->kern_total_len = lun_datalen; 8760 } else { 8761 ctsio->residual = 0; 8762 ctsio->kern_data_len = alloc_len; 8763 ctsio->kern_total_len = alloc_len; 8764 } 8765 ctsio->kern_data_resid = 0; 8766 ctsio->kern_rel_offset = 0; 8767 ctsio->kern_sg_entries = 0; 8768 8769 /* 8770 * We set this to the actual data length, regardless of how much 8771 * space we actually have to return results. If the user looks at 8772 * this value, he'll know whether or not he allocated enough space 8773 * and reissue the command if necessary. We don't support well 8774 * known logical units, so if the user asks for that, return none. 8775 */ 8776 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8777 8778 /* 8779 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8780 * this request. 8781 */ 8782 ctsio->scsi_status = SCSI_STATUS_OK; 8783 8784 ctsio->be_move_done = ctl_config_move_done; 8785 ctl_datamove((union ctl_io *)ctsio); 8786 8787 return (retval); 8788 } 8789 8790 int 8791 ctl_request_sense(struct ctl_scsiio *ctsio) 8792 { 8793 struct scsi_request_sense *cdb; 8794 struct scsi_sense_data *sense_ptr; 8795 struct ctl_lun *lun; 8796 uint32_t initidx; 8797 int have_error; 8798 scsi_sense_data_type sense_format; 8799 8800 cdb = (struct scsi_request_sense *)ctsio->cdb; 8801 8802 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8803 8804 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 8805 8806 /* 8807 * Determine which sense format the user wants. 8808 */ 8809 if (cdb->byte2 & SRS_DESC) 8810 sense_format = SSD_TYPE_DESC; 8811 else 8812 sense_format = SSD_TYPE_FIXED; 8813 8814 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 8815 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 8816 ctsio->kern_sg_entries = 0; 8817 8818 /* 8819 * struct scsi_sense_data, which is currently set to 256 bytes, is 8820 * larger than the largest allowed value for the length field in the 8821 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 8822 */ 8823 ctsio->residual = 0; 8824 ctsio->kern_data_len = cdb->length; 8825 ctsio->kern_total_len = cdb->length; 8826 8827 ctsio->kern_data_resid = 0; 8828 ctsio->kern_rel_offset = 0; 8829 ctsio->kern_sg_entries = 0; 8830 8831 /* 8832 * If we don't have a LUN, we don't have any pending sense. 8833 */ 8834 if (lun == NULL) 8835 goto no_sense; 8836 8837 have_error = 0; 8838 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8839 /* 8840 * Check for pending sense, and then for pending unit attentions. 8841 * Pending sense gets returned first, then pending unit attentions. 8842 */ 8843 mtx_lock(&lun->ctl_softc->ctl_lock); 8844 if (ctl_is_set(lun->have_ca, initidx)) { 8845 scsi_sense_data_type stored_format; 8846 8847 /* 8848 * Check to see which sense format was used for the stored 8849 * sense data. 8850 */ 8851 stored_format = scsi_sense_type( 8852 &lun->pending_sense[initidx].sense); 8853 8854 /* 8855 * If the user requested a different sense format than the 8856 * one we stored, then we need to convert it to the other 8857 * format. If we're going from descriptor to fixed format 8858 * sense data, we may lose things in translation, depending 8859 * on what options were used. 8860 * 8861 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 8862 * for some reason we'll just copy it out as-is. 8863 */ 8864 if ((stored_format == SSD_TYPE_FIXED) 8865 && (sense_format == SSD_TYPE_DESC)) 8866 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 8867 &lun->pending_sense[initidx].sense, 8868 (struct scsi_sense_data_desc *)sense_ptr); 8869 else if ((stored_format == SSD_TYPE_DESC) 8870 && (sense_format == SSD_TYPE_FIXED)) 8871 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 8872 &lun->pending_sense[initidx].sense, 8873 (struct scsi_sense_data_fixed *)sense_ptr); 8874 else 8875 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 8876 ctl_min(sizeof(*sense_ptr), 8877 sizeof(lun->pending_sense[initidx].sense))); 8878 8879 ctl_clear_mask(lun->have_ca, initidx); 8880 have_error = 1; 8881 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 8882 ctl_ua_type ua_type; 8883 8884 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 8885 sense_ptr, sense_format); 8886 if (ua_type != CTL_UA_NONE) { 8887 have_error = 1; 8888 /* We're reporting this UA, so clear it */ 8889 lun->pending_sense[initidx].ua_pending &= ~ua_type; 8890 } 8891 } 8892 mtx_unlock(&lun->ctl_softc->ctl_lock); 8893 8894 /* 8895 * We already have a pending error, return it. 8896 */ 8897 if (have_error != 0) { 8898 /* 8899 * We report the SCSI status as OK, since the status of the 8900 * request sense command itself is OK. 8901 */ 8902 ctsio->scsi_status = SCSI_STATUS_OK; 8903 8904 /* 8905 * We report 0 for the sense length, because we aren't doing 8906 * autosense in this case. We're reporting sense as 8907 * parameter data. 8908 */ 8909 ctsio->sense_len = 0; 8910 8911 ctsio->be_move_done = ctl_config_move_done; 8912 ctl_datamove((union ctl_io *)ctsio); 8913 8914 return (CTL_RETVAL_COMPLETE); 8915 } 8916 8917 no_sense: 8918 8919 /* 8920 * No sense information to report, so we report that everything is 8921 * okay. 8922 */ 8923 ctl_set_sense_data(sense_ptr, 8924 lun, 8925 sense_format, 8926 /*current_error*/ 1, 8927 /*sense_key*/ SSD_KEY_NO_SENSE, 8928 /*asc*/ 0x00, 8929 /*ascq*/ 0x00, 8930 SSD_ELEM_NONE); 8931 8932 ctsio->scsi_status = SCSI_STATUS_OK; 8933 8934 /* 8935 * We report 0 for the sense length, because we aren't doing 8936 * autosense in this case. We're reporting sense as parameter data. 8937 */ 8938 ctsio->sense_len = 0; 8939 ctsio->be_move_done = ctl_config_move_done; 8940 ctl_datamove((union ctl_io *)ctsio); 8941 8942 return (CTL_RETVAL_COMPLETE); 8943 } 8944 8945 int 8946 ctl_tur(struct ctl_scsiio *ctsio) 8947 { 8948 struct ctl_lun *lun; 8949 8950 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8951 8952 CTL_DEBUG_PRINT(("ctl_tur\n")); 8953 8954 if (lun == NULL) 8955 return (-EINVAL); 8956 8957 ctsio->scsi_status = SCSI_STATUS_OK; 8958 ctsio->io_hdr.status = CTL_SUCCESS; 8959 8960 ctl_done((union ctl_io *)ctsio); 8961 8962 return (CTL_RETVAL_COMPLETE); 8963 } 8964 8965 #ifdef notyet 8966 static int 8967 ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 8968 { 8969 8970 } 8971 #endif 8972 8973 static int 8974 ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 8975 { 8976 struct scsi_vpd_supported_pages *pages; 8977 int sup_page_size; 8978 struct ctl_lun *lun; 8979 8980 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8981 8982 sup_page_size = sizeof(struct scsi_vpd_supported_pages) + 8983 SCSI_EVPD_NUM_SUPPORTED_PAGES; 8984 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 8985 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 8986 ctsio->kern_sg_entries = 0; 8987 8988 if (sup_page_size < alloc_len) { 8989 ctsio->residual = alloc_len - sup_page_size; 8990 ctsio->kern_data_len = sup_page_size; 8991 ctsio->kern_total_len = sup_page_size; 8992 } else { 8993 ctsio->residual = 0; 8994 ctsio->kern_data_len = alloc_len; 8995 ctsio->kern_total_len = alloc_len; 8996 } 8997 ctsio->kern_data_resid = 0; 8998 ctsio->kern_rel_offset = 0; 8999 ctsio->kern_sg_entries = 0; 9000 9001 /* 9002 * The control device is always connected. The disk device, on the 9003 * other hand, may not be online all the time. Need to change this 9004 * to figure out whether the disk device is actually online or not. 9005 */ 9006 if (lun != NULL) 9007 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9008 lun->be_lun->lun_type; 9009 else 9010 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9011 9012 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9013 /* Supported VPD pages */ 9014 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9015 /* Serial Number */ 9016 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9017 /* Device Identification */ 9018 pages->page_list[2] = SVPD_DEVICE_ID; 9019 9020 ctsio->scsi_status = SCSI_STATUS_OK; 9021 9022 ctsio->be_move_done = ctl_config_move_done; 9023 ctl_datamove((union ctl_io *)ctsio); 9024 9025 return (CTL_RETVAL_COMPLETE); 9026 } 9027 9028 static int 9029 ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9030 { 9031 struct scsi_vpd_unit_serial_number *sn_ptr; 9032 struct ctl_lun *lun; 9033 #ifndef CTL_USE_BACKEND_SN 9034 char tmpstr[32]; 9035 #endif 9036 9037 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9038 9039 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9040 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9041 ctsio->kern_sg_entries = 0; 9042 9043 if (sizeof(*sn_ptr) < alloc_len) { 9044 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9045 ctsio->kern_data_len = sizeof(*sn_ptr); 9046 ctsio->kern_total_len = sizeof(*sn_ptr); 9047 } else { 9048 ctsio->residual = 0; 9049 ctsio->kern_data_len = alloc_len; 9050 ctsio->kern_total_len = alloc_len; 9051 } 9052 ctsio->kern_data_resid = 0; 9053 ctsio->kern_rel_offset = 0; 9054 ctsio->kern_sg_entries = 0; 9055 9056 /* 9057 * The control device is always connected. The disk device, on the 9058 * other hand, may not be online all the time. Need to change this 9059 * to figure out whether the disk device is actually online or not. 9060 */ 9061 if (lun != NULL) 9062 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9063 lun->be_lun->lun_type; 9064 else 9065 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9066 9067 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9068 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9069 #ifdef CTL_USE_BACKEND_SN 9070 /* 9071 * If we don't have a LUN, we just leave the serial number as 9072 * all spaces. 9073 */ 9074 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9075 if (lun != NULL) { 9076 strncpy((char *)sn_ptr->serial_num, 9077 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9078 } 9079 #else 9080 /* 9081 * Note that we're using a non-unique serial number here, 9082 */ 9083 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9084 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9085 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9086 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9087 #endif 9088 ctsio->scsi_status = SCSI_STATUS_OK; 9089 9090 ctsio->be_move_done = ctl_config_move_done; 9091 ctl_datamove((union ctl_io *)ctsio); 9092 9093 return (CTL_RETVAL_COMPLETE); 9094 } 9095 9096 9097 static int 9098 ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9099 { 9100 struct scsi_vpd_device_id *devid_ptr; 9101 struct scsi_vpd_id_descriptor *desc, *desc1; 9102 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9103 struct scsi_vpd_id_t10 *t10id; 9104 struct ctl_softc *ctl_softc; 9105 struct ctl_lun *lun; 9106 struct ctl_frontend *fe; 9107 #ifndef CTL_USE_BACKEND_SN 9108 char tmpstr[32]; 9109 #endif /* CTL_USE_BACKEND_SN */ 9110 int devid_len; 9111 9112 ctl_softc = control_softc; 9113 9114 mtx_lock(&ctl_softc->ctl_lock); 9115 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9116 mtx_unlock(&ctl_softc->ctl_lock); 9117 9118 if (fe->devid != NULL) 9119 return ((fe->devid)(ctsio, alloc_len)); 9120 9121 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9122 9123 devid_len = sizeof(struct scsi_vpd_device_id) + 9124 sizeof(struct scsi_vpd_id_descriptor) + 9125 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9126 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9127 sizeof(struct scsi_vpd_id_descriptor) + 9128 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9129 sizeof(struct scsi_vpd_id_descriptor) + 9130 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9131 9132 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 9133 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9134 ctsio->kern_sg_entries = 0; 9135 9136 if (devid_len < alloc_len) { 9137 ctsio->residual = alloc_len - devid_len; 9138 ctsio->kern_data_len = devid_len; 9139 ctsio->kern_total_len = devid_len; 9140 } else { 9141 ctsio->residual = 0; 9142 ctsio->kern_data_len = alloc_len; 9143 ctsio->kern_total_len = alloc_len; 9144 } 9145 ctsio->kern_data_resid = 0; 9146 ctsio->kern_rel_offset = 0; 9147 ctsio->kern_sg_entries = 0; 9148 9149 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9150 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9151 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9152 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9153 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9154 CTL_WWPN_LEN); 9155 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9156 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9157 9158 /* 9159 * The control device is always connected. The disk device, on the 9160 * other hand, may not be online all the time. 9161 */ 9162 if (lun != NULL) 9163 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9164 lun->be_lun->lun_type; 9165 else 9166 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9167 9168 devid_ptr->page_code = SVPD_DEVICE_ID; 9169 9170 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9171 9172 mtx_lock(&ctl_softc->ctl_lock); 9173 9174 /* 9175 * For Fibre channel, 9176 */ 9177 if (fe->port_type == CTL_PORT_FC) 9178 { 9179 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9180 SVPD_ID_CODESET_ASCII; 9181 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9182 SVPD_ID_CODESET_BINARY; 9183 } 9184 else 9185 { 9186 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9187 SVPD_ID_CODESET_ASCII; 9188 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9189 SVPD_ID_CODESET_BINARY; 9190 } 9191 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9192 mtx_unlock(&ctl_softc->ctl_lock); 9193 9194 /* 9195 * We're using a LUN association here. i.e., this device ID is a 9196 * per-LUN identifier. 9197 */ 9198 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9199 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9200 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9201 9202 /* 9203 * desc1 is for the WWPN which is a port asscociation. 9204 */ 9205 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9206 desc1->length = CTL_WWPN_LEN; 9207 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9208 /* For testing just create the WWPN */ 9209 #if 0 9210 ddb_GetWWNN((char *)desc1->identifier); 9211 9212 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9213 /* This is so Copancontrol will return something sane */ 9214 if (ctsio->io_hdr.nexus.targ_port!=0 && 9215 ctsio->io_hdr.nexus.targ_port!=8) 9216 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9217 else 9218 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9219 #endif 9220 9221 be64enc(desc1->identifier, fe->wwpn); 9222 9223 /* 9224 * desc2 is for the Relative Target Port(type 4h) identifier 9225 */ 9226 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9227 | SVPD_ID_TYPE_RELTARG; 9228 desc2->length = 4; 9229 //#if 0 9230 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9231 /* This is so Copancontrol will return something sane */ 9232 if (ctsio->io_hdr.nexus.targ_port!=0 && 9233 ctsio->io_hdr.nexus.targ_port!=8) 9234 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9235 else 9236 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9237 //#endif 9238 9239 /* 9240 * desc3 is for the Target Port Group(type 5h) identifier 9241 */ 9242 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9243 | SVPD_ID_TYPE_TPORTGRP; 9244 desc3->length = 4; 9245 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9246 desc3->identifier[3] = 1; 9247 else 9248 desc3->identifier[3] = 2; 9249 9250 #ifdef CTL_USE_BACKEND_SN 9251 /* 9252 * If we've actually got a backend, copy the device id from the 9253 * per-LUN data. Otherwise, set it to all spaces. 9254 */ 9255 if (lun != NULL) { 9256 /* 9257 * Copy the backend's LUN ID. 9258 */ 9259 strncpy((char *)t10id->vendor_spec_id, 9260 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9261 } else { 9262 /* 9263 * No backend, set this to spaces. 9264 */ 9265 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9266 } 9267 #else 9268 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9269 (lun != NULL) ? (int)lun->lun : 0); 9270 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9271 sizeof(tmpstr))); 9272 #endif 9273 9274 ctsio->scsi_status = SCSI_STATUS_OK; 9275 9276 ctsio->be_move_done = ctl_config_move_done; 9277 ctl_datamove((union ctl_io *)ctsio); 9278 9279 return (CTL_RETVAL_COMPLETE); 9280 } 9281 9282 static int 9283 ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9284 { 9285 struct scsi_inquiry *cdb; 9286 int alloc_len, retval; 9287 9288 cdb = (struct scsi_inquiry *)ctsio->cdb; 9289 9290 retval = CTL_RETVAL_COMPLETE; 9291 9292 alloc_len = scsi_2btoul(cdb->length); 9293 9294 switch (cdb->page_code) { 9295 case SVPD_SUPPORTED_PAGES: 9296 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9297 break; 9298 case SVPD_UNIT_SERIAL_NUMBER: 9299 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9300 break; 9301 case SVPD_DEVICE_ID: 9302 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9303 break; 9304 default: 9305 ctl_set_invalid_field(ctsio, 9306 /*sks_valid*/ 1, 9307 /*command*/ 1, 9308 /*field*/ 2, 9309 /*bit_valid*/ 0, 9310 /*bit*/ 0); 9311 ctl_done((union ctl_io *)ctsio); 9312 retval = CTL_RETVAL_COMPLETE; 9313 break; 9314 } 9315 9316 return (retval); 9317 } 9318 9319 static int 9320 ctl_inquiry_std(struct ctl_scsiio *ctsio) 9321 { 9322 struct scsi_inquiry_data *inq_ptr; 9323 struct scsi_inquiry *cdb; 9324 struct ctl_softc *ctl_softc; 9325 struct ctl_lun *lun; 9326 uint32_t alloc_len; 9327 int is_fc; 9328 9329 ctl_softc = control_softc; 9330 9331 /* 9332 * Figure out whether we're talking to a Fibre Channel port or not. 9333 * We treat the ioctl front end, and any SCSI adapters, as packetized 9334 * SCSI front ends. 9335 */ 9336 mtx_lock(&ctl_softc->ctl_lock); 9337 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9338 CTL_PORT_FC) 9339 is_fc = 0; 9340 else 9341 is_fc = 1; 9342 mtx_unlock(&ctl_softc->ctl_lock); 9343 9344 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9345 cdb = (struct scsi_inquiry *)ctsio->cdb; 9346 alloc_len = scsi_2btoul(cdb->length); 9347 9348 /* 9349 * We malloc the full inquiry data size here and fill it 9350 * in. If the user only asks for less, we'll give him 9351 * that much. 9352 */ 9353 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9354 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9355 ctsio->kern_sg_entries = 0; 9356 ctsio->kern_data_resid = 0; 9357 ctsio->kern_rel_offset = 0; 9358 9359 if (sizeof(*inq_ptr) < alloc_len) { 9360 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9361 ctsio->kern_data_len = sizeof(*inq_ptr); 9362 ctsio->kern_total_len = sizeof(*inq_ptr); 9363 } else { 9364 ctsio->residual = 0; 9365 ctsio->kern_data_len = alloc_len; 9366 ctsio->kern_total_len = alloc_len; 9367 } 9368 9369 /* 9370 * If we have a LUN configured, report it as connected. Otherwise, 9371 * report that it is offline or no device is supported, depending 9372 * on the value of inquiry_pq_no_lun. 9373 * 9374 * According to the spec (SPC-4 r34), the peripheral qualifier 9375 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9376 * 9377 * "A peripheral device having the specified peripheral device type 9378 * is not connected to this logical unit. However, the device 9379 * server is capable of supporting the specified peripheral device 9380 * type on this logical unit." 9381 * 9382 * According to the same spec, the peripheral qualifier 9383 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9384 * 9385 * "The device server is not capable of supporting a peripheral 9386 * device on this logical unit. For this peripheral qualifier the 9387 * peripheral device type shall be set to 1Fh. All other peripheral 9388 * device type values are reserved for this peripheral qualifier." 9389 * 9390 * Given the text, it would seem that we probably want to report that 9391 * the LUN is offline here. There is no LUN connected, but we can 9392 * support a LUN at the given LUN number. 9393 * 9394 * In the real world, though, it sounds like things are a little 9395 * different: 9396 * 9397 * - Linux, when presented with a LUN with the offline peripheral 9398 * qualifier, will create an sg driver instance for it. So when 9399 * you attach it to CTL, you wind up with a ton of sg driver 9400 * instances. (One for every LUN that Linux bothered to probe.) 9401 * Linux does this despite the fact that it issues a REPORT LUNs 9402 * to LUN 0 to get the inventory of supported LUNs. 9403 * 9404 * - There is other anecdotal evidence (from Emulex folks) about 9405 * arrays that use the offline peripheral qualifier for LUNs that 9406 * are on the "passive" path in an active/passive array. 9407 * 9408 * So the solution is provide a hopefully reasonable default 9409 * (return bad/no LUN) and allow the user to change the behavior 9410 * with a tunable/sysctl variable. 9411 */ 9412 if (lun != NULL) 9413 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9414 lun->be_lun->lun_type; 9415 else if (ctl_softc->inquiry_pq_no_lun == 0) 9416 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9417 else 9418 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9419 9420 /* RMB in byte 2 is 0 */ 9421 inq_ptr->version = SCSI_REV_SPC3; 9422 9423 /* 9424 * According to SAM-3, even if a device only supports a single 9425 * level of LUN addressing, it should still set the HISUP bit: 9426 * 9427 * 4.9.1 Logical unit numbers overview 9428 * 9429 * All logical unit number formats described in this standard are 9430 * hierarchical in structure even when only a single level in that 9431 * hierarchy is used. The HISUP bit shall be set to one in the 9432 * standard INQUIRY data (see SPC-2) when any logical unit number 9433 * format described in this standard is used. Non-hierarchical 9434 * formats are outside the scope of this standard. 9435 * 9436 * Therefore we set the HiSup bit here. 9437 * 9438 * The reponse format is 2, per SPC-3. 9439 */ 9440 inq_ptr->response_format = SID_HiSup | 2; 9441 9442 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9443 CTL_DEBUG_PRINT(("additional_length = %d\n", 9444 inq_ptr->additional_length)); 9445 9446 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9447 /* 16 bit addressing */ 9448 if (is_fc == 0) 9449 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9450 /* XXX set the SID_MultiP bit here if we're actually going to 9451 respond on multiple ports */ 9452 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9453 9454 /* 16 bit data bus, synchronous transfers */ 9455 /* XXX these flags don't apply for FC */ 9456 if (is_fc == 0) 9457 inq_ptr->flags = SID_WBus16 | SID_Sync; 9458 /* 9459 * XXX KDM do we want to support tagged queueing on the control 9460 * device at all? 9461 */ 9462 if ((lun == NULL) 9463 || (lun->be_lun->lun_type != T_PROCESSOR)) 9464 inq_ptr->flags |= SID_CmdQue; 9465 /* 9466 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9467 * We have 8 bytes for the vendor name, and 16 bytes for the device 9468 * name and 4 bytes for the revision. 9469 */ 9470 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9471 if (lun == NULL) { 9472 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9473 } else { 9474 switch (lun->be_lun->lun_type) { 9475 case T_DIRECT: 9476 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9477 break; 9478 case T_PROCESSOR: 9479 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9480 break; 9481 default: 9482 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9483 break; 9484 } 9485 } 9486 9487 /* 9488 * XXX make this a macro somewhere so it automatically gets 9489 * incremented when we make changes. 9490 */ 9491 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9492 9493 /* 9494 * For parallel SCSI, we support double transition and single 9495 * transition clocking. We also support QAS (Quick Arbitration 9496 * and Selection) and Information Unit transfers on both the 9497 * control and array devices. 9498 */ 9499 if (is_fc == 0) 9500 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9501 SID_SPI_IUS; 9502 9503 /* SAM-3 */ 9504 scsi_ulto2b(0x0060, inq_ptr->version1); 9505 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9506 scsi_ulto2b(0x0300, inq_ptr->version2); 9507 if (is_fc) { 9508 /* FCP-2 ANSI INCITS.350:2003 */ 9509 scsi_ulto2b(0x0917, inq_ptr->version3); 9510 } else { 9511 /* SPI-4 ANSI INCITS.362:200x */ 9512 scsi_ulto2b(0x0B56, inq_ptr->version3); 9513 } 9514 9515 if (lun == NULL) { 9516 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9517 scsi_ulto2b(0x0320, inq_ptr->version4); 9518 } else { 9519 switch (lun->be_lun->lun_type) { 9520 case T_DIRECT: 9521 /* 9522 * SBC-2 (no version claimed) XXX should we claim a 9523 * version? 9524 */ 9525 scsi_ulto2b(0x0320, inq_ptr->version4); 9526 break; 9527 case T_PROCESSOR: 9528 default: 9529 break; 9530 } 9531 } 9532 9533 ctsio->scsi_status = SCSI_STATUS_OK; 9534 if (ctsio->kern_data_len > 0) { 9535 ctsio->be_move_done = ctl_config_move_done; 9536 ctl_datamove((union ctl_io *)ctsio); 9537 } else { 9538 ctsio->io_hdr.status = CTL_SUCCESS; 9539 ctl_done((union ctl_io *)ctsio); 9540 } 9541 9542 return (CTL_RETVAL_COMPLETE); 9543 } 9544 9545 int 9546 ctl_inquiry(struct ctl_scsiio *ctsio) 9547 { 9548 struct scsi_inquiry *cdb; 9549 int retval; 9550 9551 cdb = (struct scsi_inquiry *)ctsio->cdb; 9552 9553 retval = 0; 9554 9555 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9556 9557 /* 9558 * Right now, we don't support the CmdDt inquiry information. 9559 * This would be nice to support in the future. When we do 9560 * support it, we should change this test so that it checks to make 9561 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9562 */ 9563 #ifdef notyet 9564 if (((cdb->byte2 & SI_EVPD) 9565 && (cdb->byte2 & SI_CMDDT))) 9566 #endif 9567 if (cdb->byte2 & SI_CMDDT) { 9568 /* 9569 * Point to the SI_CMDDT bit. We might change this 9570 * when we support SI_CMDDT, but since both bits would be 9571 * "wrong", this should probably just stay as-is then. 9572 */ 9573 ctl_set_invalid_field(ctsio, 9574 /*sks_valid*/ 1, 9575 /*command*/ 1, 9576 /*field*/ 1, 9577 /*bit_valid*/ 1, 9578 /*bit*/ 1); 9579 ctl_done((union ctl_io *)ctsio); 9580 return (CTL_RETVAL_COMPLETE); 9581 } 9582 if (cdb->byte2 & SI_EVPD) 9583 retval = ctl_inquiry_evpd(ctsio); 9584 #ifdef notyet 9585 else if (cdb->byte2 & SI_CMDDT) 9586 retval = ctl_inquiry_cmddt(ctsio); 9587 #endif 9588 else 9589 retval = ctl_inquiry_std(ctsio); 9590 9591 return (retval); 9592 } 9593 9594 /* 9595 * For known CDB types, parse the LBA and length. 9596 */ 9597 static int 9598 ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9599 { 9600 if (io->io_hdr.io_type != CTL_IO_SCSI) 9601 return (1); 9602 9603 switch (io->scsiio.cdb[0]) { 9604 case READ_6: 9605 case WRITE_6: { 9606 struct scsi_rw_6 *cdb; 9607 9608 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9609 9610 *lba = scsi_3btoul(cdb->addr); 9611 /* only 5 bits are valid in the most significant address byte */ 9612 *lba &= 0x1fffff; 9613 *len = cdb->length; 9614 break; 9615 } 9616 case READ_10: 9617 case WRITE_10: { 9618 struct scsi_rw_10 *cdb; 9619 9620 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9621 9622 *lba = scsi_4btoul(cdb->addr); 9623 *len = scsi_2btoul(cdb->length); 9624 break; 9625 } 9626 case WRITE_VERIFY_10: { 9627 struct scsi_write_verify_10 *cdb; 9628 9629 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9630 9631 *lba = scsi_4btoul(cdb->addr); 9632 *len = scsi_2btoul(cdb->length); 9633 break; 9634 } 9635 case READ_12: 9636 case WRITE_12: { 9637 struct scsi_rw_12 *cdb; 9638 9639 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9640 9641 *lba = scsi_4btoul(cdb->addr); 9642 *len = scsi_4btoul(cdb->length); 9643 break; 9644 } 9645 case WRITE_VERIFY_12: { 9646 struct scsi_write_verify_12 *cdb; 9647 9648 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9649 9650 *lba = scsi_4btoul(cdb->addr); 9651 *len = scsi_4btoul(cdb->length); 9652 break; 9653 } 9654 case READ_16: 9655 case WRITE_16: { 9656 struct scsi_rw_16 *cdb; 9657 9658 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9659 9660 *lba = scsi_8btou64(cdb->addr); 9661 *len = scsi_4btoul(cdb->length); 9662 break; 9663 } 9664 case WRITE_VERIFY_16: { 9665 struct scsi_write_verify_16 *cdb; 9666 9667 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9668 9669 9670 *lba = scsi_8btou64(cdb->addr); 9671 *len = scsi_4btoul(cdb->length); 9672 break; 9673 } 9674 default: 9675 return (1); 9676 break; /* NOTREACHED */ 9677 } 9678 9679 return (0); 9680 } 9681 9682 static ctl_action 9683 ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 9684 { 9685 uint64_t endlba1, endlba2; 9686 9687 endlba1 = lba1 + len1 - 1; 9688 endlba2 = lba2 + len2 - 1; 9689 9690 if ((endlba1 < lba2) 9691 || (endlba2 < lba1)) 9692 return (CTL_ACTION_PASS); 9693 else 9694 return (CTL_ACTION_BLOCK); 9695 } 9696 9697 static ctl_action 9698 ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 9699 { 9700 uint64_t lba1, lba2; 9701 uint32_t len1, len2; 9702 int retval; 9703 9704 retval = ctl_get_lba_len(io1, &lba1, &len1); 9705 if (retval != 0) 9706 return (CTL_ACTION_ERROR); 9707 9708 retval = ctl_get_lba_len(io2, &lba2, &len2); 9709 if (retval != 0) 9710 return (CTL_ACTION_ERROR); 9711 9712 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 9713 } 9714 9715 static ctl_action 9716 ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 9717 { 9718 struct ctl_cmd_entry *pending_entry, *ooa_entry; 9719 ctl_serialize_action *serialize_row; 9720 9721 /* 9722 * The initiator attempted multiple untagged commands at the same 9723 * time. Can't do that. 9724 */ 9725 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9726 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9727 && ((pending_io->io_hdr.nexus.targ_port == 9728 ooa_io->io_hdr.nexus.targ_port) 9729 && (pending_io->io_hdr.nexus.initid.id == 9730 ooa_io->io_hdr.nexus.initid.id)) 9731 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9732 return (CTL_ACTION_OVERLAP); 9733 9734 /* 9735 * The initiator attempted to send multiple tagged commands with 9736 * the same ID. (It's fine if different initiators have the same 9737 * tag ID.) 9738 * 9739 * Even if all of those conditions are true, we don't kill the I/O 9740 * if the command ahead of us has been aborted. We won't end up 9741 * sending it to the FETD, and it's perfectly legal to resend a 9742 * command with the same tag number as long as the previous 9743 * instance of this tag number has been aborted somehow. 9744 */ 9745 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9746 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9747 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 9748 && ((pending_io->io_hdr.nexus.targ_port == 9749 ooa_io->io_hdr.nexus.targ_port) 9750 && (pending_io->io_hdr.nexus.initid.id == 9751 ooa_io->io_hdr.nexus.initid.id)) 9752 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9753 return (CTL_ACTION_OVERLAP_TAG); 9754 9755 /* 9756 * If we get a head of queue tag, SAM-3 says that we should 9757 * immediately execute it. 9758 * 9759 * What happens if this command would normally block for some other 9760 * reason? e.g. a request sense with a head of queue tag 9761 * immediately after a write. Normally that would block, but this 9762 * will result in its getting executed immediately... 9763 * 9764 * We currently return "pass" instead of "skip", so we'll end up 9765 * going through the rest of the queue to check for overlapped tags. 9766 * 9767 * XXX KDM check for other types of blockage first?? 9768 */ 9769 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9770 return (CTL_ACTION_PASS); 9771 9772 /* 9773 * Ordered tags have to block until all items ahead of them 9774 * have completed. If we get called with an ordered tag, we always 9775 * block, if something else is ahead of us in the queue. 9776 */ 9777 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 9778 return (CTL_ACTION_BLOCK); 9779 9780 /* 9781 * Simple tags get blocked until all head of queue and ordered tags 9782 * ahead of them have completed. I'm lumping untagged commands in 9783 * with simple tags here. XXX KDM is that the right thing to do? 9784 */ 9785 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9786 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 9787 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9788 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 9789 return (CTL_ACTION_BLOCK); 9790 9791 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 9792 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 9793 9794 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 9795 9796 switch (serialize_row[pending_entry->seridx]) { 9797 case CTL_SER_BLOCK: 9798 return (CTL_ACTION_BLOCK); 9799 break; /* NOTREACHED */ 9800 case CTL_SER_EXTENT: 9801 return (ctl_extent_check(pending_io, ooa_io)); 9802 break; /* NOTREACHED */ 9803 case CTL_SER_PASS: 9804 return (CTL_ACTION_PASS); 9805 break; /* NOTREACHED */ 9806 case CTL_SER_SKIP: 9807 return (CTL_ACTION_SKIP); 9808 break; 9809 default: 9810 panic("invalid serialization value %d", 9811 serialize_row[pending_entry->seridx]); 9812 break; /* NOTREACHED */ 9813 } 9814 9815 return (CTL_ACTION_ERROR); 9816 } 9817 9818 /* 9819 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 9820 * Assumptions: 9821 * - pending_io is generally either incoming, or on the blocked queue 9822 * - starting I/O is the I/O we want to start the check with. 9823 */ 9824 static ctl_action 9825 ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 9826 union ctl_io *starting_io) 9827 { 9828 union ctl_io *ooa_io; 9829 ctl_action action; 9830 9831 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 9832 9833 /* 9834 * Run back along the OOA queue, starting with the current 9835 * blocked I/O and going through every I/O before it on the 9836 * queue. If starting_io is NULL, we'll just end up returning 9837 * CTL_ACTION_PASS. 9838 */ 9839 for (ooa_io = starting_io; ooa_io != NULL; 9840 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 9841 ooa_links)){ 9842 9843 /* 9844 * This routine just checks to see whether 9845 * cur_blocked is blocked by ooa_io, which is ahead 9846 * of it in the queue. It doesn't queue/dequeue 9847 * cur_blocked. 9848 */ 9849 action = ctl_check_for_blockage(pending_io, ooa_io); 9850 switch (action) { 9851 case CTL_ACTION_BLOCK: 9852 case CTL_ACTION_OVERLAP: 9853 case CTL_ACTION_OVERLAP_TAG: 9854 case CTL_ACTION_SKIP: 9855 case CTL_ACTION_ERROR: 9856 return (action); 9857 break; /* NOTREACHED */ 9858 case CTL_ACTION_PASS: 9859 break; 9860 default: 9861 panic("invalid action %d", action); 9862 break; /* NOTREACHED */ 9863 } 9864 } 9865 9866 return (CTL_ACTION_PASS); 9867 } 9868 9869 /* 9870 * Assumptions: 9871 * - An I/O has just completed, and has been removed from the per-LUN OOA 9872 * queue, so some items on the blocked queue may now be unblocked. 9873 */ 9874 static int 9875 ctl_check_blocked(struct ctl_lun *lun) 9876 { 9877 union ctl_io *cur_blocked, *next_blocked; 9878 9879 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 9880 9881 /* 9882 * Run forward from the head of the blocked queue, checking each 9883 * entry against the I/Os prior to it on the OOA queue to see if 9884 * there is still any blockage. 9885 * 9886 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 9887 * with our removing a variable on it while it is traversing the 9888 * list. 9889 */ 9890 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 9891 cur_blocked != NULL; cur_blocked = next_blocked) { 9892 union ctl_io *prev_ooa; 9893 ctl_action action; 9894 9895 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 9896 blocked_links); 9897 9898 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 9899 ctl_ooaq, ooa_links); 9900 9901 /* 9902 * If cur_blocked happens to be the first item in the OOA 9903 * queue now, prev_ooa will be NULL, and the action 9904 * returned will just be CTL_ACTION_PASS. 9905 */ 9906 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 9907 9908 switch (action) { 9909 case CTL_ACTION_BLOCK: 9910 /* Nothing to do here, still blocked */ 9911 break; 9912 case CTL_ACTION_OVERLAP: 9913 case CTL_ACTION_OVERLAP_TAG: 9914 /* 9915 * This shouldn't happen! In theory we've already 9916 * checked this command for overlap... 9917 */ 9918 break; 9919 case CTL_ACTION_PASS: 9920 case CTL_ACTION_SKIP: { 9921 struct ctl_softc *softc; 9922 struct ctl_cmd_entry *entry; 9923 uint32_t initidx; 9924 uint8_t opcode; 9925 int isc_retval; 9926 9927 /* 9928 * The skip case shouldn't happen, this transaction 9929 * should have never made it onto the blocked queue. 9930 */ 9931 /* 9932 * This I/O is no longer blocked, we can remove it 9933 * from the blocked queue. Since this is a TAILQ 9934 * (doubly linked list), we can do O(1) removals 9935 * from any place on the list. 9936 */ 9937 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 9938 blocked_links); 9939 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 9940 9941 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 9942 /* 9943 * Need to send IO back to original side to 9944 * run 9945 */ 9946 union ctl_ha_msg msg_info; 9947 9948 msg_info.hdr.original_sc = 9949 cur_blocked->io_hdr.original_sc; 9950 msg_info.hdr.serializing_sc = cur_blocked; 9951 msg_info.hdr.msg_type = CTL_MSG_R2R; 9952 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 9953 &msg_info, sizeof(msg_info), 0)) > 9954 CTL_HA_STATUS_SUCCESS) { 9955 printf("CTL:Check Blocked error from " 9956 "ctl_ha_msg_send %d\n", 9957 isc_retval); 9958 } 9959 break; 9960 } 9961 opcode = cur_blocked->scsiio.cdb[0]; 9962 entry = &ctl_cmd_table[opcode]; 9963 softc = control_softc; 9964 9965 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 9966 9967 /* 9968 * Check this I/O for LUN state changes that may 9969 * have happened while this command was blocked. 9970 * The LUN state may have been changed by a command 9971 * ahead of us in the queue, so we need to re-check 9972 * for any states that can be caused by SCSI 9973 * commands. 9974 */ 9975 if (ctl_scsiio_lun_check(softc, lun, entry, 9976 &cur_blocked->scsiio) == 0) { 9977 cur_blocked->io_hdr.flags |= 9978 CTL_FLAG_IS_WAS_ON_RTR; 9979 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 9980 &cur_blocked->io_hdr, links); 9981 /* 9982 * In the non CTL_DONE_THREAD case, we need 9983 * to wake up the work thread here. When 9984 * we're processing completed requests from 9985 * the work thread context, we'll pop back 9986 * around and end up pulling things off the 9987 * RtR queue. When we aren't processing 9988 * things from the work thread context, 9989 * though, we won't ever check the RtR queue. 9990 * So we need to wake up the thread to clear 9991 * things off the queue. Otherwise this 9992 * transaction will just sit on the RtR queue 9993 * until a new I/O comes in. (Which may or 9994 * may not happen...) 9995 */ 9996 #ifndef CTL_DONE_THREAD 9997 ctl_wakeup_thread(); 9998 #endif 9999 } else 10000 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10001 break; 10002 } 10003 default: 10004 /* 10005 * This probably shouldn't happen -- we shouldn't 10006 * get CTL_ACTION_ERROR, or anything else. 10007 */ 10008 break; 10009 } 10010 } 10011 10012 return (CTL_RETVAL_COMPLETE); 10013 } 10014 10015 /* 10016 * This routine (with one exception) checks LUN flags that can be set by 10017 * commands ahead of us in the OOA queue. These flags have to be checked 10018 * when a command initially comes in, and when we pull a command off the 10019 * blocked queue and are preparing to execute it. The reason we have to 10020 * check these flags for commands on the blocked queue is that the LUN 10021 * state may have been changed by a command ahead of us while we're on the 10022 * blocked queue. 10023 * 10024 * Ordering is somewhat important with these checks, so please pay 10025 * careful attention to the placement of any new checks. 10026 */ 10027 static int 10028 ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10029 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10030 { 10031 int retval; 10032 10033 retval = 0; 10034 10035 /* 10036 * If this shelf is a secondary shelf controller, we have to reject 10037 * any media access commands. 10038 */ 10039 #if 0 10040 /* No longer needed for HA */ 10041 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10042 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10043 ctl_set_lun_standby(ctsio); 10044 retval = 1; 10045 goto bailout; 10046 } 10047 #endif 10048 10049 /* 10050 * Check for a reservation conflict. If this command isn't allowed 10051 * even on reserved LUNs, and if this initiator isn't the one who 10052 * reserved us, reject the command with a reservation conflict. 10053 */ 10054 if ((lun->flags & CTL_LUN_RESERVED) 10055 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10056 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10057 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10058 || (ctsio->io_hdr.nexus.targ_target.id != 10059 lun->rsv_nexus.targ_target.id)) { 10060 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10061 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10062 retval = 1; 10063 goto bailout; 10064 } 10065 } 10066 10067 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10068 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10069 uint32_t residx; 10070 10071 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10072 /* 10073 * if we aren't registered or it's a res holder type 10074 * reservation and this isn't the res holder then set a 10075 * conflict. 10076 * NOTE: Commands which might be allowed on write exclusive 10077 * type reservations are checked in the particular command 10078 * for a conflict. Read and SSU are the only ones. 10079 */ 10080 if (!lun->per_res[residx].registered 10081 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10082 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10083 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10084 retval = 1; 10085 goto bailout; 10086 } 10087 10088 } 10089 10090 if ((lun->flags & CTL_LUN_OFFLINE) 10091 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10092 ctl_set_lun_not_ready(ctsio); 10093 retval = 1; 10094 goto bailout; 10095 } 10096 10097 /* 10098 * If the LUN is stopped, see if this particular command is allowed 10099 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10100 */ 10101 if ((lun->flags & CTL_LUN_STOPPED) 10102 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10103 /* "Logical unit not ready, initializing cmd. required" */ 10104 ctl_set_lun_stopped(ctsio); 10105 retval = 1; 10106 goto bailout; 10107 } 10108 10109 if ((lun->flags & CTL_LUN_INOPERABLE) 10110 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10111 /* "Medium format corrupted" */ 10112 ctl_set_medium_format_corrupted(ctsio); 10113 retval = 1; 10114 goto bailout; 10115 } 10116 10117 bailout: 10118 return (retval); 10119 10120 } 10121 10122 static void 10123 ctl_failover_io(union ctl_io *io, int have_lock) 10124 { 10125 ctl_set_busy(&io->scsiio); 10126 ctl_done_lock(io, have_lock); 10127 } 10128 10129 static void 10130 ctl_failover(void) 10131 { 10132 struct ctl_lun *lun; 10133 struct ctl_softc *ctl_softc; 10134 union ctl_io *next_io, *pending_io; 10135 union ctl_io *io; 10136 int lun_idx; 10137 int i; 10138 10139 ctl_softc = control_softc; 10140 10141 mtx_lock(&ctl_softc->ctl_lock); 10142 /* 10143 * Remove any cmds from the other SC from the rtr queue. These 10144 * will obviously only be for LUNs for which we're the primary. 10145 * We can't send status or get/send data for these commands. 10146 * Since they haven't been executed yet, we can just remove them. 10147 * We'll either abort them or delete them below, depending on 10148 * which HA mode we're in. 10149 */ 10150 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10151 io != NULL; io = next_io) { 10152 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10153 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10154 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10155 ctl_io_hdr, links); 10156 } 10157 10158 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10159 lun = ctl_softc->ctl_luns[lun_idx]; 10160 if (lun==NULL) 10161 continue; 10162 10163 /* 10164 * Processor LUNs are primary on both sides. 10165 * XXX will this always be true? 10166 */ 10167 if (lun->be_lun->lun_type == T_PROCESSOR) 10168 continue; 10169 10170 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10171 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10172 printf("FAILOVER: primary lun %d\n", lun_idx); 10173 /* 10174 * Remove all commands from the other SC. First from the 10175 * blocked queue then from the ooa queue. Once we have 10176 * removed them. Call ctl_check_blocked to see if there 10177 * is anything that can run. 10178 */ 10179 for (io = (union ctl_io *)TAILQ_FIRST( 10180 &lun->blocked_queue); io != NULL; io = next_io) { 10181 10182 next_io = (union ctl_io *)TAILQ_NEXT( 10183 &io->io_hdr, blocked_links); 10184 10185 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10186 TAILQ_REMOVE(&lun->blocked_queue, 10187 &io->io_hdr,blocked_links); 10188 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10189 TAILQ_REMOVE(&lun->ooa_queue, 10190 &io->io_hdr, ooa_links); 10191 10192 ctl_free_io_internal(io, 1); 10193 } 10194 } 10195 10196 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10197 io != NULL; io = next_io) { 10198 10199 next_io = (union ctl_io *)TAILQ_NEXT( 10200 &io->io_hdr, ooa_links); 10201 10202 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10203 10204 TAILQ_REMOVE(&lun->ooa_queue, 10205 &io->io_hdr, 10206 ooa_links); 10207 10208 ctl_free_io_internal(io, 1); 10209 } 10210 } 10211 ctl_check_blocked(lun); 10212 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10213 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10214 10215 printf("FAILOVER: primary lun %d\n", lun_idx); 10216 /* 10217 * Abort all commands from the other SC. We can't 10218 * send status back for them now. These should get 10219 * cleaned up when they are completed or come out 10220 * for a datamove operation. 10221 */ 10222 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10223 io != NULL; io = next_io) { 10224 next_io = (union ctl_io *)TAILQ_NEXT( 10225 &io->io_hdr, ooa_links); 10226 10227 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10228 io->io_hdr.flags |= CTL_FLAG_ABORT; 10229 } 10230 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10231 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10232 10233 printf("FAILOVER: secondary lun %d\n", lun_idx); 10234 10235 lun->flags |= CTL_LUN_PRIMARY_SC; 10236 10237 /* 10238 * We send all I/O that was sent to this controller 10239 * and redirected to the other side back with 10240 * busy status, and have the initiator retry it. 10241 * Figuring out how much data has been transferred, 10242 * etc. and picking up where we left off would be 10243 * very tricky. 10244 * 10245 * XXX KDM need to remove I/O from the blocked 10246 * queue as well! 10247 */ 10248 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10249 &lun->ooa_queue); pending_io != NULL; 10250 pending_io = next_io) { 10251 10252 next_io = (union ctl_io *)TAILQ_NEXT( 10253 &pending_io->io_hdr, ooa_links); 10254 10255 pending_io->io_hdr.flags &= 10256 ~CTL_FLAG_SENT_2OTHER_SC; 10257 10258 if (pending_io->io_hdr.flags & 10259 CTL_FLAG_IO_ACTIVE) { 10260 pending_io->io_hdr.flags |= 10261 CTL_FLAG_FAILOVER; 10262 } else { 10263 ctl_set_busy(&pending_io->scsiio); 10264 ctl_done_lock(pending_io, 10265 /*have_lock*/1); 10266 } 10267 } 10268 10269 /* 10270 * Build Unit Attention 10271 */ 10272 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10273 lun->pending_sense[i].ua_pending |= 10274 CTL_UA_ASYM_ACC_CHANGE; 10275 } 10276 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10277 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10278 printf("FAILOVER: secondary lun %d\n", lun_idx); 10279 /* 10280 * if the first io on the OOA is not on the RtR queue 10281 * add it. 10282 */ 10283 lun->flags |= CTL_LUN_PRIMARY_SC; 10284 10285 pending_io = (union ctl_io *)TAILQ_FIRST( 10286 &lun->ooa_queue); 10287 if (pending_io==NULL) { 10288 printf("Nothing on OOA queue\n"); 10289 continue; 10290 } 10291 10292 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10293 if ((pending_io->io_hdr.flags & 10294 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10295 pending_io->io_hdr.flags |= 10296 CTL_FLAG_IS_WAS_ON_RTR; 10297 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10298 &pending_io->io_hdr, links); 10299 } 10300 #if 0 10301 else 10302 { 10303 printf("Tag 0x%04x is running\n", 10304 pending_io->scsiio.tag_num); 10305 } 10306 #endif 10307 10308 next_io = (union ctl_io *)TAILQ_NEXT( 10309 &pending_io->io_hdr, ooa_links); 10310 for (pending_io=next_io; pending_io != NULL; 10311 pending_io = next_io) { 10312 pending_io->io_hdr.flags &= 10313 ~CTL_FLAG_SENT_2OTHER_SC; 10314 next_io = (union ctl_io *)TAILQ_NEXT( 10315 &pending_io->io_hdr, ooa_links); 10316 if (pending_io->io_hdr.flags & 10317 CTL_FLAG_IS_WAS_ON_RTR) { 10318 #if 0 10319 printf("Tag 0x%04x is running\n", 10320 pending_io->scsiio.tag_num); 10321 #endif 10322 continue; 10323 } 10324 10325 switch (ctl_check_ooa(lun, pending_io, 10326 (union ctl_io *)TAILQ_PREV( 10327 &pending_io->io_hdr, ctl_ooaq, 10328 ooa_links))) { 10329 10330 case CTL_ACTION_BLOCK: 10331 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10332 &pending_io->io_hdr, 10333 blocked_links); 10334 pending_io->io_hdr.flags |= 10335 CTL_FLAG_BLOCKED; 10336 break; 10337 case CTL_ACTION_PASS: 10338 case CTL_ACTION_SKIP: 10339 pending_io->io_hdr.flags |= 10340 CTL_FLAG_IS_WAS_ON_RTR; 10341 STAILQ_INSERT_TAIL( 10342 &ctl_softc->rtr_queue, 10343 &pending_io->io_hdr, links); 10344 break; 10345 case CTL_ACTION_OVERLAP: 10346 ctl_set_overlapped_cmd( 10347 (struct ctl_scsiio *)pending_io); 10348 ctl_done_lock(pending_io, 10349 /*have_lock*/ 1); 10350 break; 10351 case CTL_ACTION_OVERLAP_TAG: 10352 ctl_set_overlapped_tag( 10353 (struct ctl_scsiio *)pending_io, 10354 pending_io->scsiio.tag_num & 0xff); 10355 ctl_done_lock(pending_io, 10356 /*have_lock*/ 1); 10357 break; 10358 case CTL_ACTION_ERROR: 10359 default: 10360 ctl_set_internal_failure( 10361 (struct ctl_scsiio *)pending_io, 10362 0, // sks_valid 10363 0); //retry count 10364 ctl_done_lock(pending_io, 10365 /*have_lock*/ 1); 10366 break; 10367 } 10368 } 10369 10370 /* 10371 * Build Unit Attention 10372 */ 10373 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10374 lun->pending_sense[i].ua_pending |= 10375 CTL_UA_ASYM_ACC_CHANGE; 10376 } 10377 } else { 10378 panic("Unhandled HA mode failover, LUN flags = %#x, " 10379 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10380 } 10381 } 10382 ctl_pause_rtr = 0; 10383 mtx_unlock(&ctl_softc->ctl_lock); 10384 } 10385 10386 static int 10387 ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10388 { 10389 struct ctl_lun *lun; 10390 struct ctl_cmd_entry *entry; 10391 uint8_t opcode; 10392 uint32_t initidx, targ_lun; 10393 int retval; 10394 10395 retval = 0; 10396 10397 lun = NULL; 10398 10399 opcode = ctsio->cdb[0]; 10400 10401 mtx_lock(&ctl_softc->ctl_lock); 10402 10403 targ_lun = ctsio->io_hdr.nexus.targ_lun; 10404 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 10405 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 10406 if ((targ_lun < CTL_MAX_LUNS) 10407 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 10408 lun = ctl_softc->ctl_luns[targ_lun]; 10409 /* 10410 * If the LUN is invalid, pretend that it doesn't exist. 10411 * It will go away as soon as all pending I/O has been 10412 * completed. 10413 */ 10414 if (lun->flags & CTL_LUN_DISABLED) { 10415 lun = NULL; 10416 } else { 10417 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10418 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10419 lun->be_lun; 10420 if (lun->be_lun->lun_type == T_PROCESSOR) { 10421 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10422 } 10423 } 10424 } else { 10425 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10426 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10427 } 10428 10429 entry = &ctl_cmd_table[opcode]; 10430 10431 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10432 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10433 10434 /* 10435 * Check to see whether we can send this command to LUNs that don't 10436 * exist. This should pretty much only be the case for inquiry 10437 * and request sense. Further checks, below, really require having 10438 * a LUN, so we can't really check the command anymore. Just put 10439 * it on the rtr queue. 10440 */ 10441 if (lun == NULL) { 10442 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10443 goto queue_rtr; 10444 10445 ctl_set_unsupported_lun(ctsio); 10446 mtx_unlock(&ctl_softc->ctl_lock); 10447 ctl_done((union ctl_io *)ctsio); 10448 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 10449 goto bailout; 10450 } else { 10451 /* 10452 * Every I/O goes into the OOA queue for a particular LUN, and 10453 * stays there until completion. 10454 */ 10455 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10456 10457 /* 10458 * Make sure we support this particular command on this LUN. 10459 * e.g., we don't support writes to the control LUN. 10460 */ 10461 switch (lun->be_lun->lun_type) { 10462 case T_PROCESSOR: 10463 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10464 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10465 == 0)) { 10466 ctl_set_invalid_opcode(ctsio); 10467 mtx_unlock(&ctl_softc->ctl_lock); 10468 ctl_done((union ctl_io *)ctsio); 10469 goto bailout; 10470 } 10471 break; 10472 case T_DIRECT: 10473 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10474 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10475 == 0)){ 10476 ctl_set_invalid_opcode(ctsio); 10477 mtx_unlock(&ctl_softc->ctl_lock); 10478 ctl_done((union ctl_io *)ctsio); 10479 goto bailout; 10480 } 10481 break; 10482 default: 10483 printf("Unsupported CTL LUN type %d\n", 10484 lun->be_lun->lun_type); 10485 panic("Unsupported CTL LUN type %d\n", 10486 lun->be_lun->lun_type); 10487 break; /* NOTREACHED */ 10488 } 10489 } 10490 10491 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10492 10493 /* 10494 * If we've got a request sense, it'll clear the contingent 10495 * allegiance condition. Otherwise, if we have a CA condition for 10496 * this initiator, clear it, because it sent down a command other 10497 * than request sense. 10498 */ 10499 if ((opcode != REQUEST_SENSE) 10500 && (ctl_is_set(lun->have_ca, initidx))) 10501 ctl_clear_mask(lun->have_ca, initidx); 10502 10503 /* 10504 * If the command has this flag set, it handles its own unit 10505 * attention reporting, we shouldn't do anything. Otherwise we 10506 * check for any pending unit attentions, and send them back to the 10507 * initiator. We only do this when a command initially comes in, 10508 * not when we pull it off the blocked queue. 10509 * 10510 * According to SAM-3, section 5.3.2, the order that things get 10511 * presented back to the host is basically unit attentions caused 10512 * by some sort of reset event, busy status, reservation conflicts 10513 * or task set full, and finally any other status. 10514 * 10515 * One issue here is that some of the unit attentions we report 10516 * don't fall into the "reset" category (e.g. "reported luns data 10517 * has changed"). So reporting it here, before the reservation 10518 * check, may be technically wrong. I guess the only thing to do 10519 * would be to check for and report the reset events here, and then 10520 * check for the other unit attention types after we check for a 10521 * reservation conflict. 10522 * 10523 * XXX KDM need to fix this 10524 */ 10525 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10526 ctl_ua_type ua_type; 10527 10528 ua_type = lun->pending_sense[initidx].ua_pending; 10529 if (ua_type != CTL_UA_NONE) { 10530 scsi_sense_data_type sense_format; 10531 10532 if (lun != NULL) 10533 sense_format = (lun->flags & 10534 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 10535 SSD_TYPE_FIXED; 10536 else 10537 sense_format = SSD_TYPE_FIXED; 10538 10539 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10540 sense_format); 10541 if (ua_type != CTL_UA_NONE) { 10542 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10543 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10544 CTL_AUTOSENSE; 10545 ctsio->sense_len = SSD_FULL_SIZE; 10546 lun->pending_sense[initidx].ua_pending &= 10547 ~ua_type; 10548 mtx_unlock(&ctl_softc->ctl_lock); 10549 ctl_done((union ctl_io *)ctsio); 10550 goto bailout; 10551 } 10552 } 10553 } 10554 10555 10556 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10557 mtx_unlock(&ctl_softc->ctl_lock); 10558 ctl_done((union ctl_io *)ctsio); 10559 goto bailout; 10560 } 10561 10562 /* 10563 * XXX CHD this is where we want to send IO to other side if 10564 * this LUN is secondary on this SC. We will need to make a copy 10565 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10566 * the copy we send as FROM_OTHER. 10567 * We also need to stuff the address of the original IO so we can 10568 * find it easily. Something similar will need be done on the other 10569 * side so when we are done we can find the copy. 10570 */ 10571 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10572 union ctl_ha_msg msg_info; 10573 int isc_retval; 10574 10575 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10576 10577 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10578 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10579 #if 0 10580 printf("1. ctsio %p\n", ctsio); 10581 #endif 10582 msg_info.hdr.serializing_sc = NULL; 10583 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10584 msg_info.scsi.tag_num = ctsio->tag_num; 10585 msg_info.scsi.tag_type = ctsio->tag_type; 10586 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10587 10588 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10589 10590 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10591 (void *)&msg_info, sizeof(msg_info), 0)) > 10592 CTL_HA_STATUS_SUCCESS) { 10593 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10594 isc_retval); 10595 printf("CTL:opcode is %x\n",opcode); 10596 } else { 10597 #if 0 10598 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10599 #endif 10600 } 10601 10602 /* 10603 * XXX KDM this I/O is off the incoming queue, but hasn't 10604 * been inserted on any other queue. We may need to come 10605 * up with a holding queue while we wait for serialization 10606 * so that we have an idea of what we're waiting for from 10607 * the other side. 10608 */ 10609 goto bailout_unlock; 10610 } 10611 10612 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10613 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10614 ctl_ooaq, ooa_links))) { 10615 case CTL_ACTION_BLOCK: 10616 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10617 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10618 blocked_links); 10619 goto bailout_unlock; 10620 break; /* NOTREACHED */ 10621 case CTL_ACTION_PASS: 10622 case CTL_ACTION_SKIP: 10623 goto queue_rtr; 10624 break; /* NOTREACHED */ 10625 case CTL_ACTION_OVERLAP: 10626 ctl_set_overlapped_cmd(ctsio); 10627 mtx_unlock(&ctl_softc->ctl_lock); 10628 ctl_done((union ctl_io *)ctsio); 10629 goto bailout; 10630 break; /* NOTREACHED */ 10631 case CTL_ACTION_OVERLAP_TAG: 10632 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10633 mtx_unlock(&ctl_softc->ctl_lock); 10634 ctl_done((union ctl_io *)ctsio); 10635 goto bailout; 10636 break; /* NOTREACHED */ 10637 case CTL_ACTION_ERROR: 10638 default: 10639 ctl_set_internal_failure(ctsio, 10640 /*sks_valid*/ 0, 10641 /*retry_count*/ 0); 10642 mtx_unlock(&ctl_softc->ctl_lock); 10643 ctl_done((union ctl_io *)ctsio); 10644 goto bailout; 10645 break; /* NOTREACHED */ 10646 } 10647 10648 goto bailout_unlock; 10649 10650 queue_rtr: 10651 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10652 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10653 10654 bailout_unlock: 10655 mtx_unlock(&ctl_softc->ctl_lock); 10656 10657 bailout: 10658 return (retval); 10659 } 10660 10661 static int 10662 ctl_scsiio(struct ctl_scsiio *ctsio) 10663 { 10664 int retval; 10665 struct ctl_cmd_entry *entry; 10666 10667 retval = CTL_RETVAL_COMPLETE; 10668 10669 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10670 10671 entry = &ctl_cmd_table[ctsio->cdb[0]]; 10672 10673 /* 10674 * If this I/O has been aborted, just send it straight to 10675 * ctl_done() without executing it. 10676 */ 10677 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 10678 ctl_done((union ctl_io *)ctsio); 10679 goto bailout; 10680 } 10681 10682 /* 10683 * All the checks should have been handled by ctl_scsiio_precheck(). 10684 * We should be clear now to just execute the I/O. 10685 */ 10686 retval = entry->execute(ctsio); 10687 10688 bailout: 10689 return (retval); 10690 } 10691 10692 /* 10693 * Since we only implement one target right now, a bus reset simply resets 10694 * our single target. 10695 */ 10696 static int 10697 ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 10698 { 10699 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 10700 } 10701 10702 static int 10703 ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 10704 ctl_ua_type ua_type) 10705 { 10706 struct ctl_lun *lun; 10707 int retval; 10708 10709 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 10710 union ctl_ha_msg msg_info; 10711 10712 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10713 msg_info.hdr.nexus = io->io_hdr.nexus; 10714 if (ua_type==CTL_UA_TARG_RESET) 10715 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 10716 else 10717 msg_info.task.task_action = CTL_TASK_BUS_RESET; 10718 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 10719 msg_info.hdr.original_sc = NULL; 10720 msg_info.hdr.serializing_sc = NULL; 10721 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10722 (void *)&msg_info, sizeof(msg_info), 0)) { 10723 } 10724 } 10725 retval = 0; 10726 10727 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 10728 retval += ctl_lun_reset(lun, io, ua_type); 10729 10730 return (retval); 10731 } 10732 10733 /* 10734 * The LUN should always be set. The I/O is optional, and is used to 10735 * distinguish between I/Os sent by this initiator, and by other 10736 * initiators. We set unit attention for initiators other than this one. 10737 * SAM-3 is vague on this point. It does say that a unit attention should 10738 * be established for other initiators when a LUN is reset (see section 10739 * 5.7.3), but it doesn't specifically say that the unit attention should 10740 * be established for this particular initiator when a LUN is reset. Here 10741 * is the relevant text, from SAM-3 rev 8: 10742 * 10743 * 5.7.2 When a SCSI initiator port aborts its own tasks 10744 * 10745 * When a SCSI initiator port causes its own task(s) to be aborted, no 10746 * notification that the task(s) have been aborted shall be returned to 10747 * the SCSI initiator port other than the completion response for the 10748 * command or task management function action that caused the task(s) to 10749 * be aborted and notification(s) associated with related effects of the 10750 * action (e.g., a reset unit attention condition). 10751 * 10752 * XXX KDM for now, we're setting unit attention for all initiators. 10753 */ 10754 static int 10755 ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 10756 { 10757 union ctl_io *xio; 10758 #if 0 10759 uint32_t initindex; 10760 #endif 10761 int i; 10762 10763 /* 10764 * Run through the OOA queue and abort each I/O. 10765 */ 10766 #if 0 10767 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10768 #endif 10769 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10770 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10771 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10772 } 10773 10774 /* 10775 * This version sets unit attention for every 10776 */ 10777 #if 0 10778 initindex = ctl_get_initindex(&io->io_hdr.nexus); 10779 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10780 if (initindex == i) 10781 continue; 10782 lun->pending_sense[i].ua_pending |= ua_type; 10783 } 10784 #endif 10785 10786 /* 10787 * A reset (any kind, really) clears reservations established with 10788 * RESERVE/RELEASE. It does not clear reservations established 10789 * with PERSISTENT RESERVE OUT, but we don't support that at the 10790 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 10791 * reservations made with the RESERVE/RELEASE commands, because 10792 * those commands are obsolete in SPC-3. 10793 */ 10794 lun->flags &= ~CTL_LUN_RESERVED; 10795 10796 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10797 ctl_clear_mask(lun->have_ca, i); 10798 lun->pending_sense[i].ua_pending |= ua_type; 10799 } 10800 10801 return (0); 10802 } 10803 10804 static int 10805 ctl_abort_task(union ctl_io *io) 10806 { 10807 union ctl_io *xio; 10808 struct ctl_lun *lun; 10809 struct ctl_softc *ctl_softc; 10810 #if 0 10811 struct sbuf sb; 10812 char printbuf[128]; 10813 #endif 10814 int found; 10815 uint32_t targ_lun; 10816 10817 ctl_softc = control_softc; 10818 found = 0; 10819 10820 /* 10821 * Look up the LUN. 10822 */ 10823 targ_lun = io->io_hdr.nexus.targ_lun; 10824 if (io->io_hdr.nexus.lun_map_fn != NULL) 10825 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 10826 if ((targ_lun < CTL_MAX_LUNS) 10827 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 10828 lun = ctl_softc->ctl_luns[targ_lun]; 10829 else 10830 goto bailout; 10831 10832 #if 0 10833 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 10834 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 10835 #endif 10836 10837 /* 10838 * Run through the OOA queue and attempt to find the given I/O. 10839 * The target port, initiator ID, tag type and tag number have to 10840 * match the values that we got from the initiator. If we have an 10841 * untagged command to abort, simply abort the first untagged command 10842 * we come to. We only allow one untagged command at a time of course. 10843 */ 10844 #if 0 10845 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10846 #endif 10847 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10848 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10849 #if 0 10850 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 10851 10852 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 10853 lun->lun, xio->scsiio.tag_num, 10854 xio->scsiio.tag_type, 10855 (xio->io_hdr.blocked_links.tqe_prev 10856 == NULL) ? "" : " BLOCKED", 10857 (xio->io_hdr.flags & 10858 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 10859 (xio->io_hdr.flags & 10860 CTL_FLAG_ABORT) ? " ABORT" : "", 10861 (xio->io_hdr.flags & 10862 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 10863 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 10864 sbuf_finish(&sb); 10865 printf("%s\n", sbuf_data(&sb)); 10866 #endif 10867 10868 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 10869 && (xio->io_hdr.nexus.initid.id == 10870 io->io_hdr.nexus.initid.id)) { 10871 /* 10872 * If the abort says that the task is untagged, the 10873 * task in the queue must be untagged. Otherwise, 10874 * we just check to see whether the tag numbers 10875 * match. This is because the QLogic firmware 10876 * doesn't pass back the tag type in an abort 10877 * request. 10878 */ 10879 #if 0 10880 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 10881 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 10882 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 10883 #endif 10884 /* 10885 * XXX KDM we've got problems with FC, because it 10886 * doesn't send down a tag type with aborts. So we 10887 * can only really go by the tag number... 10888 * This may cause problems with parallel SCSI. 10889 * Need to figure that out!! 10890 */ 10891 if (xio->scsiio.tag_num == io->taskio.tag_num) { 10892 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10893 found = 1; 10894 if ((io->io_hdr.flags & 10895 CTL_FLAG_FROM_OTHER_SC) == 0 && 10896 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 10897 union ctl_ha_msg msg_info; 10898 10899 io->io_hdr.flags |= 10900 CTL_FLAG_SENT_2OTHER_SC; 10901 msg_info.hdr.nexus = io->io_hdr.nexus; 10902 msg_info.task.task_action = 10903 CTL_TASK_ABORT_TASK; 10904 msg_info.task.tag_num = 10905 io->taskio.tag_num; 10906 msg_info.task.tag_type = 10907 io->taskio.tag_type; 10908 msg_info.hdr.msg_type = 10909 CTL_MSG_MANAGE_TASKS; 10910 msg_info.hdr.original_sc = NULL; 10911 msg_info.hdr.serializing_sc = NULL; 10912 #if 0 10913 printf("Sent Abort to other side\n"); 10914 #endif 10915 if (CTL_HA_STATUS_SUCCESS != 10916 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10917 (void *)&msg_info, 10918 sizeof(msg_info), 0)) { 10919 } 10920 } 10921 #if 0 10922 printf("ctl_abort_task: found I/O to abort\n"); 10923 #endif 10924 break; 10925 } 10926 } 10927 } 10928 10929 bailout: 10930 10931 if (found == 0) { 10932 /* 10933 * This isn't really an error. It's entirely possible for 10934 * the abort and command completion to cross on the wire. 10935 * This is more of an informative/diagnostic error. 10936 */ 10937 #if 0 10938 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 10939 "%d:%d:%d:%d tag %d type %d\n", 10940 io->io_hdr.nexus.initid.id, 10941 io->io_hdr.nexus.targ_port, 10942 io->io_hdr.nexus.targ_target.id, 10943 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 10944 io->taskio.tag_type); 10945 #endif 10946 return (1); 10947 } else 10948 return (0); 10949 } 10950 10951 /* 10952 * This routine cannot block! It must be callable from an interrupt 10953 * handler as well as from the work thread. 10954 */ 10955 static void 10956 ctl_run_task_queue(struct ctl_softc *ctl_softc) 10957 { 10958 union ctl_io *io, *next_io; 10959 10960 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 10961 10962 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 10963 10964 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 10965 io != NULL; io = next_io) { 10966 int retval; 10967 const char *task_desc; 10968 10969 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10970 10971 retval = 0; 10972 10973 switch (io->io_hdr.io_type) { 10974 case CTL_IO_TASK: { 10975 task_desc = ctl_scsi_task_string(&io->taskio); 10976 if (task_desc != NULL) { 10977 #ifdef NEEDTOPORT 10978 csevent_log(CSC_CTL | CSC_SHELF_SW | 10979 CTL_TASK_REPORT, 10980 csevent_LogType_Trace, 10981 csevent_Severity_Information, 10982 csevent_AlertLevel_Green, 10983 csevent_FRU_Firmware, 10984 csevent_FRU_Unknown, 10985 "CTL: received task: %s",task_desc); 10986 #endif 10987 } else { 10988 #ifdef NEEDTOPORT 10989 csevent_log(CSC_CTL | CSC_SHELF_SW | 10990 CTL_TASK_REPORT, 10991 csevent_LogType_Trace, 10992 csevent_Severity_Information, 10993 csevent_AlertLevel_Green, 10994 csevent_FRU_Firmware, 10995 csevent_FRU_Unknown, 10996 "CTL: received unknown task " 10997 "type: %d (%#x)", 10998 io->taskio.task_action, 10999 io->taskio.task_action); 11000 #endif 11001 } 11002 switch (io->taskio.task_action) { 11003 case CTL_TASK_ABORT_TASK: 11004 retval = ctl_abort_task(io); 11005 break; 11006 case CTL_TASK_ABORT_TASK_SET: 11007 break; 11008 case CTL_TASK_CLEAR_ACA: 11009 break; 11010 case CTL_TASK_CLEAR_TASK_SET: 11011 break; 11012 case CTL_TASK_LUN_RESET: { 11013 struct ctl_lun *lun; 11014 uint32_t targ_lun; 11015 int retval; 11016 11017 targ_lun = io->io_hdr.nexus.targ_lun; 11018 if (io->io_hdr.nexus.lun_map_fn != NULL) 11019 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11020 11021 if ((targ_lun < CTL_MAX_LUNS) 11022 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11023 lun = ctl_softc->ctl_luns[targ_lun]; 11024 else { 11025 retval = 1; 11026 break; 11027 } 11028 11029 if (!(io->io_hdr.flags & 11030 CTL_FLAG_FROM_OTHER_SC)) { 11031 union ctl_ha_msg msg_info; 11032 11033 io->io_hdr.flags |= 11034 CTL_FLAG_SENT_2OTHER_SC; 11035 msg_info.hdr.msg_type = 11036 CTL_MSG_MANAGE_TASKS; 11037 msg_info.hdr.nexus = io->io_hdr.nexus; 11038 msg_info.task.task_action = 11039 CTL_TASK_LUN_RESET; 11040 msg_info.hdr.original_sc = NULL; 11041 msg_info.hdr.serializing_sc = NULL; 11042 if (CTL_HA_STATUS_SUCCESS != 11043 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11044 (void *)&msg_info, 11045 sizeof(msg_info), 0)) { 11046 } 11047 } 11048 11049 retval = ctl_lun_reset(lun, io, 11050 CTL_UA_LUN_RESET); 11051 break; 11052 } 11053 case CTL_TASK_TARGET_RESET: 11054 retval = ctl_target_reset(ctl_softc, io, 11055 CTL_UA_TARG_RESET); 11056 break; 11057 case CTL_TASK_BUS_RESET: 11058 retval = ctl_bus_reset(ctl_softc, io); 11059 break; 11060 case CTL_TASK_PORT_LOGIN: 11061 break; 11062 case CTL_TASK_PORT_LOGOUT: 11063 break; 11064 default: 11065 printf("ctl_run_task_queue: got unknown task " 11066 "management event %d\n", 11067 io->taskio.task_action); 11068 break; 11069 } 11070 if (retval == 0) 11071 io->io_hdr.status = CTL_SUCCESS; 11072 else 11073 io->io_hdr.status = CTL_ERROR; 11074 11075 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11076 ctl_io_hdr, links); 11077 /* 11078 * This will queue this I/O to the done queue, but the 11079 * work thread won't be able to process it until we 11080 * return and the lock is released. 11081 */ 11082 ctl_done_lock(io, /*have_lock*/ 1); 11083 break; 11084 } 11085 default: { 11086 11087 printf("%s: invalid I/O type %d msg %d cdb %x" 11088 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11089 __func__, io->io_hdr.io_type, 11090 io->io_hdr.msg_type, io->scsiio.cdb[0], 11091 (uintmax_t)io->io_hdr.nexus.initid.id, 11092 io->io_hdr.nexus.targ_port, 11093 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11094 io->io_hdr.nexus.targ_lun /* XXX */, 11095 (io->io_hdr.io_type == CTL_IO_TASK) ? 11096 io->taskio.tag_num : io->scsiio.tag_num); 11097 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11098 ctl_io_hdr, links); 11099 ctl_free_io_internal(io, 1); 11100 break; 11101 } 11102 } 11103 } 11104 11105 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11106 } 11107 11108 /* 11109 * For HA operation. Handle commands that come in from the other 11110 * controller. 11111 */ 11112 static void 11113 ctl_handle_isc(union ctl_io *io) 11114 { 11115 int free_io; 11116 struct ctl_lun *lun; 11117 struct ctl_softc *ctl_softc; 11118 uint32_t targ_lun; 11119 11120 ctl_softc = control_softc; 11121 11122 targ_lun = io->io_hdr.nexus.targ_lun; 11123 if (io->io_hdr.nexus.lun_map_fn != NULL) 11124 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11125 lun = ctl_softc->ctl_luns[targ_lun]; 11126 11127 switch (io->io_hdr.msg_type) { 11128 case CTL_MSG_SERIALIZE: 11129 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11130 /*have_lock*/ 0); 11131 break; 11132 case CTL_MSG_R2R: { 11133 uint8_t opcode; 11134 struct ctl_cmd_entry *entry; 11135 11136 /* 11137 * This is only used in SER_ONLY mode. 11138 */ 11139 free_io = 0; 11140 opcode = io->scsiio.cdb[0]; 11141 entry = &ctl_cmd_table[opcode]; 11142 mtx_lock(&ctl_softc->ctl_lock); 11143 if (ctl_scsiio_lun_check(ctl_softc, lun, 11144 entry, (struct ctl_scsiio *)io) != 0) { 11145 ctl_done_lock(io, /*have_lock*/ 1); 11146 mtx_unlock(&ctl_softc->ctl_lock); 11147 break; 11148 } 11149 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11150 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11151 &io->io_hdr, links); 11152 mtx_unlock(&ctl_softc->ctl_lock); 11153 break; 11154 } 11155 case CTL_MSG_FINISH_IO: 11156 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11157 free_io = 0; 11158 ctl_done_lock(io, /*have_lock*/ 0); 11159 } else { 11160 free_io = 1; 11161 mtx_lock(&ctl_softc->ctl_lock); 11162 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11163 ooa_links); 11164 STAILQ_REMOVE(&ctl_softc->task_queue, 11165 &io->io_hdr, ctl_io_hdr, links); 11166 ctl_check_blocked(lun); 11167 mtx_unlock(&ctl_softc->ctl_lock); 11168 } 11169 break; 11170 case CTL_MSG_PERS_ACTION: 11171 ctl_hndl_per_res_out_on_other_sc( 11172 (union ctl_ha_msg *)&io->presio.pr_msg); 11173 free_io = 1; 11174 break; 11175 case CTL_MSG_BAD_JUJU: 11176 free_io = 0; 11177 ctl_done_lock(io, /*have_lock*/ 0); 11178 break; 11179 case CTL_MSG_DATAMOVE: 11180 /* Only used in XFER mode */ 11181 free_io = 0; 11182 ctl_datamove_remote(io); 11183 break; 11184 case CTL_MSG_DATAMOVE_DONE: 11185 /* Only used in XFER mode */ 11186 free_io = 0; 11187 io->scsiio.be_move_done(io); 11188 break; 11189 default: 11190 free_io = 1; 11191 printf("%s: Invalid message type %d\n", 11192 __func__, io->io_hdr.msg_type); 11193 break; 11194 } 11195 if (free_io) 11196 ctl_free_io_internal(io, 0); 11197 11198 } 11199 11200 11201 /* 11202 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11203 * there is no match. 11204 */ 11205 static ctl_lun_error_pattern 11206 ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11207 { 11208 struct ctl_cmd_entry *entry; 11209 ctl_lun_error_pattern filtered_pattern, pattern; 11210 uint8_t opcode; 11211 11212 pattern = desc->error_pattern; 11213 11214 /* 11215 * XXX KDM we need more data passed into this function to match a 11216 * custom pattern, and we actually need to implement custom pattern 11217 * matching. 11218 */ 11219 if (pattern & CTL_LUN_PAT_CMD) 11220 return (CTL_LUN_PAT_CMD); 11221 11222 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11223 return (CTL_LUN_PAT_ANY); 11224 11225 opcode = ctsio->cdb[0]; 11226 entry = &ctl_cmd_table[opcode]; 11227 11228 filtered_pattern = entry->pattern & pattern; 11229 11230 /* 11231 * If the user requested specific flags in the pattern (e.g. 11232 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11233 * flags. 11234 * 11235 * If the user did not specify any flags, it doesn't matter whether 11236 * or not the command supports the flags. 11237 */ 11238 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11239 (pattern & ~CTL_LUN_PAT_MASK)) 11240 return (CTL_LUN_PAT_NONE); 11241 11242 /* 11243 * If the user asked for a range check, see if the requested LBA 11244 * range overlaps with this command's LBA range. 11245 */ 11246 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11247 uint64_t lba1; 11248 uint32_t len1; 11249 ctl_action action; 11250 int retval; 11251 11252 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11253 if (retval != 0) 11254 return (CTL_LUN_PAT_NONE); 11255 11256 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11257 desc->lba_range.len); 11258 /* 11259 * A "pass" means that the LBA ranges don't overlap, so 11260 * this doesn't match the user's range criteria. 11261 */ 11262 if (action == CTL_ACTION_PASS) 11263 return (CTL_LUN_PAT_NONE); 11264 } 11265 11266 return (filtered_pattern); 11267 } 11268 11269 static void 11270 ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11271 { 11272 struct ctl_error_desc *desc, *desc2; 11273 11274 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 11275 11276 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11277 ctl_lun_error_pattern pattern; 11278 /* 11279 * Check to see whether this particular command matches 11280 * the pattern in the descriptor. 11281 */ 11282 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11283 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11284 continue; 11285 11286 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11287 case CTL_LUN_INJ_ABORTED: 11288 ctl_set_aborted(&io->scsiio); 11289 break; 11290 case CTL_LUN_INJ_MEDIUM_ERR: 11291 ctl_set_medium_error(&io->scsiio); 11292 break; 11293 case CTL_LUN_INJ_UA: 11294 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11295 * OCCURRED */ 11296 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11297 break; 11298 case CTL_LUN_INJ_CUSTOM: 11299 /* 11300 * We're assuming the user knows what he is doing. 11301 * Just copy the sense information without doing 11302 * checks. 11303 */ 11304 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11305 ctl_min(sizeof(desc->custom_sense), 11306 sizeof(io->scsiio.sense_data))); 11307 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11308 io->scsiio.sense_len = SSD_FULL_SIZE; 11309 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11310 break; 11311 case CTL_LUN_INJ_NONE: 11312 default: 11313 /* 11314 * If this is an error injection type we don't know 11315 * about, clear the continuous flag (if it is set) 11316 * so it will get deleted below. 11317 */ 11318 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11319 break; 11320 } 11321 /* 11322 * By default, each error injection action is a one-shot 11323 */ 11324 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11325 continue; 11326 11327 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11328 11329 free(desc, M_CTL); 11330 } 11331 } 11332 11333 #ifdef CTL_IO_DELAY 11334 static void 11335 ctl_datamove_timer_wakeup(void *arg) 11336 { 11337 union ctl_io *io; 11338 11339 io = (union ctl_io *)arg; 11340 11341 ctl_datamove(io); 11342 } 11343 #endif /* CTL_IO_DELAY */ 11344 11345 void 11346 ctl_datamove(union ctl_io *io) 11347 { 11348 void (*fe_datamove)(union ctl_io *io); 11349 11350 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11351 11352 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11353 11354 #ifdef CTL_TIME_IO 11355 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11356 char str[256]; 11357 char path_str[64]; 11358 struct sbuf sb; 11359 11360 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11361 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11362 11363 sbuf_cat(&sb, path_str); 11364 switch (io->io_hdr.io_type) { 11365 case CTL_IO_SCSI: 11366 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11367 sbuf_printf(&sb, "\n"); 11368 sbuf_cat(&sb, path_str); 11369 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11370 io->scsiio.tag_num, io->scsiio.tag_type); 11371 break; 11372 case CTL_IO_TASK: 11373 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11374 "Tag Type: %d\n", io->taskio.task_action, 11375 io->taskio.tag_num, io->taskio.tag_type); 11376 break; 11377 default: 11378 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11379 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11380 break; 11381 } 11382 sbuf_cat(&sb, path_str); 11383 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11384 (intmax_t)time_uptime - io->io_hdr.start_time); 11385 sbuf_finish(&sb); 11386 printf("%s", sbuf_data(&sb)); 11387 } 11388 #endif /* CTL_TIME_IO */ 11389 11390 mtx_lock(&control_softc->ctl_lock); 11391 #ifdef CTL_IO_DELAY 11392 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11393 struct ctl_lun *lun; 11394 11395 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11396 11397 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11398 } else { 11399 struct ctl_lun *lun; 11400 11401 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11402 if ((lun != NULL) 11403 && (lun->delay_info.datamove_delay > 0)) { 11404 struct callout *callout; 11405 11406 callout = (struct callout *)&io->io_hdr.timer_bytes; 11407 callout_init(callout, /*mpsafe*/ 1); 11408 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11409 callout_reset(callout, 11410 lun->delay_info.datamove_delay * hz, 11411 ctl_datamove_timer_wakeup, io); 11412 if (lun->delay_info.datamove_type == 11413 CTL_DELAY_TYPE_ONESHOT) 11414 lun->delay_info.datamove_delay = 0; 11415 mtx_unlock(&control_softc->ctl_lock); 11416 return; 11417 } 11418 } 11419 #endif 11420 /* 11421 * If we have any pending task management commands, process them 11422 * first. This is necessary to eliminate a race condition with the 11423 * FETD: 11424 * 11425 * - FETD submits a task management command, like an abort. 11426 * - Back end calls fe_datamove() to move the data for the aborted 11427 * command. The FETD can't really accept it, but if it did, it 11428 * would end up transmitting data for a command that the initiator 11429 * told us to abort. 11430 * 11431 * We close the race by processing all pending task management 11432 * commands here (we can't block!), and then check this I/O to see 11433 * if it has been aborted. If so, return it to the back end with 11434 * bad status, so the back end can say return an error to the back end 11435 * and then when the back end returns an error, we can return the 11436 * aborted command to the FETD, so it can clean up its resources. 11437 */ 11438 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11439 ctl_run_task_queue(control_softc); 11440 11441 /* 11442 * This command has been aborted. Set the port status, so we fail 11443 * the data move. 11444 */ 11445 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11446 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11447 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11448 io->io_hdr.nexus.targ_port, 11449 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11450 io->io_hdr.nexus.targ_lun); 11451 io->io_hdr.status = CTL_CMD_ABORTED; 11452 io->io_hdr.port_status = 31337; 11453 mtx_unlock(&control_softc->ctl_lock); 11454 /* 11455 * Note that the backend, in this case, will get the 11456 * callback in its context. In other cases it may get 11457 * called in the frontend's interrupt thread context. 11458 */ 11459 io->scsiio.be_move_done(io); 11460 return; 11461 } 11462 11463 /* 11464 * If we're in XFER mode and this I/O is from the other shelf 11465 * controller, we need to send the DMA to the other side to 11466 * actually transfer the data to/from the host. In serialize only 11467 * mode the transfer happens below CTL and ctl_datamove() is only 11468 * called on the machine that originally received the I/O. 11469 */ 11470 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11471 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11472 union ctl_ha_msg msg; 11473 uint32_t sg_entries_sent; 11474 int do_sg_copy; 11475 int i; 11476 11477 memset(&msg, 0, sizeof(msg)); 11478 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11479 msg.hdr.original_sc = io->io_hdr.original_sc; 11480 msg.hdr.serializing_sc = io; 11481 msg.hdr.nexus = io->io_hdr.nexus; 11482 msg.dt.flags = io->io_hdr.flags; 11483 /* 11484 * We convert everything into a S/G list here. We can't 11485 * pass by reference, only by value between controllers. 11486 * So we can't pass a pointer to the S/G list, only as many 11487 * S/G entries as we can fit in here. If it's possible for 11488 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11489 * then we need to break this up into multiple transfers. 11490 */ 11491 if (io->scsiio.kern_sg_entries == 0) { 11492 msg.dt.kern_sg_entries = 1; 11493 /* 11494 * If this is in cached memory, flush the cache 11495 * before we send the DMA request to the other 11496 * controller. We want to do this in either the 11497 * read or the write case. The read case is 11498 * straightforward. In the write case, we want to 11499 * make sure nothing is in the local cache that 11500 * could overwrite the DMAed data. 11501 */ 11502 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11503 /* 11504 * XXX KDM use bus_dmamap_sync() here. 11505 */ 11506 } 11507 11508 /* 11509 * Convert to a physical address if this is a 11510 * virtual address. 11511 */ 11512 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11513 msg.dt.sg_list[0].addr = 11514 io->scsiio.kern_data_ptr; 11515 } else { 11516 /* 11517 * XXX KDM use busdma here! 11518 */ 11519 #if 0 11520 msg.dt.sg_list[0].addr = (void *) 11521 vtophys(io->scsiio.kern_data_ptr); 11522 #endif 11523 } 11524 11525 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11526 do_sg_copy = 0; 11527 } else { 11528 struct ctl_sg_entry *sgl; 11529 11530 do_sg_copy = 1; 11531 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11532 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11533 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11534 /* 11535 * XXX KDM use bus_dmamap_sync() here. 11536 */ 11537 } 11538 } 11539 11540 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11541 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11542 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11543 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11544 msg.dt.sg_sequence = 0; 11545 11546 /* 11547 * Loop until we've sent all of the S/G entries. On the 11548 * other end, we'll recompose these S/G entries into one 11549 * contiguous list before passing it to the 11550 */ 11551 for (sg_entries_sent = 0; sg_entries_sent < 11552 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11553 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11554 sizeof(msg.dt.sg_list[0])), 11555 msg.dt.kern_sg_entries - sg_entries_sent); 11556 11557 if (do_sg_copy != 0) { 11558 struct ctl_sg_entry *sgl; 11559 int j; 11560 11561 sgl = (struct ctl_sg_entry *) 11562 io->scsiio.kern_data_ptr; 11563 /* 11564 * If this is in cached memory, flush the cache 11565 * before we send the DMA request to the other 11566 * controller. We want to do this in either 11567 * the * read or the write case. The read 11568 * case is straightforward. In the write 11569 * case, we want to make sure nothing is 11570 * in the local cache that could overwrite 11571 * the DMAed data. 11572 */ 11573 11574 for (i = sg_entries_sent, j = 0; 11575 i < msg.dt.cur_sg_entries; i++, j++) { 11576 if ((io->io_hdr.flags & 11577 CTL_FLAG_NO_DATASYNC) == 0) { 11578 /* 11579 * XXX KDM use bus_dmamap_sync() 11580 */ 11581 } 11582 if ((io->io_hdr.flags & 11583 CTL_FLAG_BUS_ADDR) == 0) { 11584 /* 11585 * XXX KDM use busdma. 11586 */ 11587 #if 0 11588 msg.dt.sg_list[j].addr =(void *) 11589 vtophys(sgl[i].addr); 11590 #endif 11591 } else { 11592 msg.dt.sg_list[j].addr = 11593 sgl[i].addr; 11594 } 11595 msg.dt.sg_list[j].len = sgl[i].len; 11596 } 11597 } 11598 11599 sg_entries_sent += msg.dt.cur_sg_entries; 11600 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11601 msg.dt.sg_last = 1; 11602 else 11603 msg.dt.sg_last = 0; 11604 11605 /* 11606 * XXX KDM drop and reacquire the lock here? 11607 */ 11608 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11609 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11610 /* 11611 * XXX do something here. 11612 */ 11613 } 11614 11615 msg.dt.sent_sg_entries = sg_entries_sent; 11616 } 11617 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11618 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11619 ctl_failover_io(io, /*have_lock*/ 1); 11620 11621 } else { 11622 11623 /* 11624 * Lookup the fe_datamove() function for this particular 11625 * front end. 11626 */ 11627 fe_datamove = 11628 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11629 mtx_unlock(&control_softc->ctl_lock); 11630 11631 fe_datamove(io); 11632 } 11633 } 11634 11635 static void 11636 ctl_send_datamove_done(union ctl_io *io, int have_lock) 11637 { 11638 union ctl_ha_msg msg; 11639 int isc_status; 11640 11641 memset(&msg, 0, sizeof(msg)); 11642 11643 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11644 msg.hdr.original_sc = io; 11645 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11646 msg.hdr.nexus = io->io_hdr.nexus; 11647 msg.hdr.status = io->io_hdr.status; 11648 msg.scsi.tag_num = io->scsiio.tag_num; 11649 msg.scsi.tag_type = io->scsiio.tag_type; 11650 msg.scsi.scsi_status = io->scsiio.scsi_status; 11651 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11652 sizeof(io->scsiio.sense_data)); 11653 msg.scsi.sense_len = io->scsiio.sense_len; 11654 msg.scsi.sense_residual = io->scsiio.sense_residual; 11655 msg.scsi.fetd_status = io->io_hdr.port_status; 11656 msg.scsi.residual = io->scsiio.residual; 11657 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11658 11659 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11660 ctl_failover_io(io, /*have_lock*/ have_lock); 11661 return; 11662 } 11663 11664 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11665 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11666 /* XXX do something if this fails */ 11667 } 11668 11669 } 11670 11671 /* 11672 * The DMA to the remote side is done, now we need to tell the other side 11673 * we're done so it can continue with its data movement. 11674 */ 11675 static void 11676 ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 11677 { 11678 union ctl_io *io; 11679 11680 io = rq->context; 11681 11682 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11683 printf("%s: ISC DMA write failed with error %d", __func__, 11684 rq->ret); 11685 ctl_set_internal_failure(&io->scsiio, 11686 /*sks_valid*/ 1, 11687 /*retry_count*/ rq->ret); 11688 } 11689 11690 ctl_dt_req_free(rq); 11691 11692 /* 11693 * In this case, we had to malloc the memory locally. Free it. 11694 */ 11695 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11696 int i; 11697 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11698 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11699 } 11700 /* 11701 * The data is in local and remote memory, so now we need to send 11702 * status (good or back) back to the other side. 11703 */ 11704 ctl_send_datamove_done(io, /*have_lock*/ 0); 11705 } 11706 11707 /* 11708 * We've moved the data from the host/controller into local memory. Now we 11709 * need to push it over to the remote controller's memory. 11710 */ 11711 static int 11712 ctl_datamove_remote_dm_write_cb(union ctl_io *io) 11713 { 11714 int retval; 11715 11716 retval = 0; 11717 11718 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 11719 ctl_datamove_remote_write_cb); 11720 11721 return (retval); 11722 } 11723 11724 static void 11725 ctl_datamove_remote_write(union ctl_io *io) 11726 { 11727 int retval; 11728 void (*fe_datamove)(union ctl_io *io); 11729 11730 /* 11731 * - Get the data from the host/HBA into local memory. 11732 * - DMA memory from the local controller to the remote controller. 11733 * - Send status back to the remote controller. 11734 */ 11735 11736 retval = ctl_datamove_remote_sgl_setup(io); 11737 if (retval != 0) 11738 return; 11739 11740 /* Switch the pointer over so the FETD knows what to do */ 11741 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11742 11743 /* 11744 * Use a custom move done callback, since we need to send completion 11745 * back to the other controller, not to the backend on this side. 11746 */ 11747 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 11748 11749 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11750 11751 fe_datamove(io); 11752 11753 return; 11754 11755 } 11756 11757 static int 11758 ctl_datamove_remote_dm_read_cb(union ctl_io *io) 11759 { 11760 #if 0 11761 char str[256]; 11762 char path_str[64]; 11763 struct sbuf sb; 11764 #endif 11765 11766 /* 11767 * In this case, we had to malloc the memory locally. Free it. 11768 */ 11769 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11770 int i; 11771 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11772 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11773 } 11774 11775 #if 0 11776 scsi_path_string(io, path_str, sizeof(path_str)); 11777 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11778 sbuf_cat(&sb, path_str); 11779 scsi_command_string(&io->scsiio, NULL, &sb); 11780 sbuf_printf(&sb, "\n"); 11781 sbuf_cat(&sb, path_str); 11782 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11783 io->scsiio.tag_num, io->scsiio.tag_type); 11784 sbuf_cat(&sb, path_str); 11785 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 11786 io->io_hdr.flags, io->io_hdr.status); 11787 sbuf_finish(&sb); 11788 printk("%s", sbuf_data(&sb)); 11789 #endif 11790 11791 11792 /* 11793 * The read is done, now we need to send status (good or bad) back 11794 * to the other side. 11795 */ 11796 ctl_send_datamove_done(io, /*have_lock*/ 0); 11797 11798 return (0); 11799 } 11800 11801 static void 11802 ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 11803 { 11804 union ctl_io *io; 11805 void (*fe_datamove)(union ctl_io *io); 11806 11807 io = rq->context; 11808 11809 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11810 printf("%s: ISC DMA read failed with error %d", __func__, 11811 rq->ret); 11812 ctl_set_internal_failure(&io->scsiio, 11813 /*sks_valid*/ 1, 11814 /*retry_count*/ rq->ret); 11815 } 11816 11817 ctl_dt_req_free(rq); 11818 11819 /* Switch the pointer over so the FETD knows what to do */ 11820 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11821 11822 /* 11823 * Use a custom move done callback, since we need to send completion 11824 * back to the other controller, not to the backend on this side. 11825 */ 11826 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 11827 11828 /* XXX KDM add checks like the ones in ctl_datamove? */ 11829 11830 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11831 11832 fe_datamove(io); 11833 } 11834 11835 static int 11836 ctl_datamove_remote_sgl_setup(union ctl_io *io) 11837 { 11838 struct ctl_sg_entry *local_sglist, *remote_sglist; 11839 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 11840 struct ctl_softc *softc; 11841 int retval; 11842 int i; 11843 11844 retval = 0; 11845 softc = control_softc; 11846 11847 local_sglist = io->io_hdr.local_sglist; 11848 local_dma_sglist = io->io_hdr.local_dma_sglist; 11849 remote_sglist = io->io_hdr.remote_sglist; 11850 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11851 11852 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 11853 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 11854 local_sglist[i].len = remote_sglist[i].len; 11855 11856 /* 11857 * XXX Detect the situation where the RS-level I/O 11858 * redirector on the other side has already read the 11859 * data off of the AOR RS on this side, and 11860 * transferred it to remote (mirror) memory on the 11861 * other side. Since we already have the data in 11862 * memory here, we just need to use it. 11863 * 11864 * XXX KDM this can probably be removed once we 11865 * get the cache device code in and take the 11866 * current AOR implementation out. 11867 */ 11868 #ifdef NEEDTOPORT 11869 if ((remote_sglist[i].addr >= 11870 (void *)vtophys(softc->mirr->addr)) 11871 && (remote_sglist[i].addr < 11872 ((void *)vtophys(softc->mirr->addr) + 11873 CacheMirrorOffset))) { 11874 local_sglist[i].addr = remote_sglist[i].addr - 11875 CacheMirrorOffset; 11876 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 11877 CTL_FLAG_DATA_IN) 11878 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 11879 } else { 11880 local_sglist[i].addr = remote_sglist[i].addr + 11881 CacheMirrorOffset; 11882 } 11883 #endif 11884 #if 0 11885 printf("%s: local %p, remote %p, len %d\n", 11886 __func__, local_sglist[i].addr, 11887 remote_sglist[i].addr, local_sglist[i].len); 11888 #endif 11889 } 11890 } else { 11891 uint32_t len_to_go; 11892 11893 /* 11894 * In this case, we don't have automatically allocated 11895 * memory for this I/O on this controller. This typically 11896 * happens with internal CTL I/O -- e.g. inquiry, mode 11897 * sense, etc. Anything coming from RAIDCore will have 11898 * a mirror area available. 11899 */ 11900 len_to_go = io->scsiio.kern_data_len; 11901 11902 /* 11903 * Clear the no datasync flag, we have to use malloced 11904 * buffers. 11905 */ 11906 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 11907 11908 /* 11909 * The difficult thing here is that the size of the various 11910 * S/G segments may be different than the size from the 11911 * remote controller. That'll make it harder when DMAing 11912 * the data back to the other side. 11913 */ 11914 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 11915 sizeof(io->io_hdr.remote_sglist[0])) && 11916 (len_to_go > 0); i++) { 11917 local_sglist[i].len = ctl_min(len_to_go, 131072); 11918 CTL_SIZE_8B(local_dma_sglist[i].len, 11919 local_sglist[i].len); 11920 local_sglist[i].addr = 11921 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 11922 11923 local_dma_sglist[i].addr = local_sglist[i].addr; 11924 11925 if (local_sglist[i].addr == NULL) { 11926 int j; 11927 11928 printf("malloc failed for %zd bytes!", 11929 local_dma_sglist[i].len); 11930 for (j = 0; j < i; j++) { 11931 free(local_sglist[j].addr, M_CTL); 11932 } 11933 ctl_set_internal_failure(&io->scsiio, 11934 /*sks_valid*/ 1, 11935 /*retry_count*/ 4857); 11936 retval = 1; 11937 goto bailout_error; 11938 11939 } 11940 /* XXX KDM do we need a sync here? */ 11941 11942 len_to_go -= local_sglist[i].len; 11943 } 11944 /* 11945 * Reset the number of S/G entries accordingly. The 11946 * original number of S/G entries is available in 11947 * rem_sg_entries. 11948 */ 11949 io->scsiio.kern_sg_entries = i; 11950 11951 #if 0 11952 printf("%s: kern_sg_entries = %d\n", __func__, 11953 io->scsiio.kern_sg_entries); 11954 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11955 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 11956 local_sglist[i].addr, local_sglist[i].len, 11957 local_dma_sglist[i].len); 11958 #endif 11959 } 11960 11961 11962 return (retval); 11963 11964 bailout_error: 11965 11966 ctl_send_datamove_done(io, /*have_lock*/ 0); 11967 11968 return (retval); 11969 } 11970 11971 static int 11972 ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 11973 ctl_ha_dt_cb callback) 11974 { 11975 struct ctl_ha_dt_req *rq; 11976 struct ctl_sg_entry *remote_sglist, *local_sglist; 11977 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 11978 uint32_t local_used, remote_used, total_used; 11979 int retval; 11980 int i, j; 11981 11982 retval = 0; 11983 11984 rq = ctl_dt_req_alloc(); 11985 11986 /* 11987 * If we failed to allocate the request, and if the DMA didn't fail 11988 * anyway, set busy status. This is just a resource allocation 11989 * failure. 11990 */ 11991 if ((rq == NULL) 11992 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 11993 ctl_set_busy(&io->scsiio); 11994 11995 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 11996 11997 if (rq != NULL) 11998 ctl_dt_req_free(rq); 11999 12000 /* 12001 * The data move failed. We need to return status back 12002 * to the other controller. No point in trying to DMA 12003 * data to the remote controller. 12004 */ 12005 12006 ctl_send_datamove_done(io, /*have_lock*/ 0); 12007 12008 retval = 1; 12009 12010 goto bailout; 12011 } 12012 12013 local_sglist = io->io_hdr.local_sglist; 12014 local_dma_sglist = io->io_hdr.local_dma_sglist; 12015 remote_sglist = io->io_hdr.remote_sglist; 12016 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12017 local_used = 0; 12018 remote_used = 0; 12019 total_used = 0; 12020 12021 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12022 rq->ret = CTL_HA_STATUS_SUCCESS; 12023 rq->context = io; 12024 callback(rq); 12025 goto bailout; 12026 } 12027 12028 /* 12029 * Pull/push the data over the wire from/to the other controller. 12030 * This takes into account the possibility that the local and 12031 * remote sglists may not be identical in terms of the size of 12032 * the elements and the number of elements. 12033 * 12034 * One fundamental assumption here is that the length allocated for 12035 * both the local and remote sglists is identical. Otherwise, we've 12036 * essentially got a coding error of some sort. 12037 */ 12038 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12039 int isc_ret; 12040 uint32_t cur_len, dma_length; 12041 uint8_t *tmp_ptr; 12042 12043 rq->id = CTL_HA_DATA_CTL; 12044 rq->command = command; 12045 rq->context = io; 12046 12047 /* 12048 * Both pointers should be aligned. But it is possible 12049 * that the allocation length is not. They should both 12050 * also have enough slack left over at the end, though, 12051 * to round up to the next 8 byte boundary. 12052 */ 12053 cur_len = ctl_min(local_sglist[i].len - local_used, 12054 remote_sglist[j].len - remote_used); 12055 12056 /* 12057 * In this case, we have a size issue and need to decrease 12058 * the size, except in the case where we actually have less 12059 * than 8 bytes left. In that case, we need to increase 12060 * the DMA length to get the last bit. 12061 */ 12062 if ((cur_len & 0x7) != 0) { 12063 if (cur_len > 0x7) { 12064 cur_len = cur_len - (cur_len & 0x7); 12065 dma_length = cur_len; 12066 } else { 12067 CTL_SIZE_8B(dma_length, cur_len); 12068 } 12069 12070 } else 12071 dma_length = cur_len; 12072 12073 /* 12074 * If we had to allocate memory for this I/O, instead of using 12075 * the non-cached mirror memory, we'll need to flush the cache 12076 * before trying to DMA to the other controller. 12077 * 12078 * We could end up doing this multiple times for the same 12079 * segment if we have a larger local segment than remote 12080 * segment. That shouldn't be an issue. 12081 */ 12082 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12083 /* 12084 * XXX KDM use bus_dmamap_sync() here. 12085 */ 12086 } 12087 12088 rq->size = dma_length; 12089 12090 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12091 tmp_ptr += local_used; 12092 12093 /* Use physical addresses when talking to ISC hardware */ 12094 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12095 /* XXX KDM use busdma */ 12096 #if 0 12097 rq->local = vtophys(tmp_ptr); 12098 #endif 12099 } else 12100 rq->local = tmp_ptr; 12101 12102 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12103 tmp_ptr += remote_used; 12104 rq->remote = tmp_ptr; 12105 12106 rq->callback = NULL; 12107 12108 local_used += cur_len; 12109 if (local_used >= local_sglist[i].len) { 12110 i++; 12111 local_used = 0; 12112 } 12113 12114 remote_used += cur_len; 12115 if (remote_used >= remote_sglist[j].len) { 12116 j++; 12117 remote_used = 0; 12118 } 12119 total_used += cur_len; 12120 12121 if (total_used >= io->scsiio.kern_data_len) 12122 rq->callback = callback; 12123 12124 if ((rq->size & 0x7) != 0) { 12125 printf("%s: warning: size %d is not on 8b boundary\n", 12126 __func__, rq->size); 12127 } 12128 if (((uintptr_t)rq->local & 0x7) != 0) { 12129 printf("%s: warning: local %p not on 8b boundary\n", 12130 __func__, rq->local); 12131 } 12132 if (((uintptr_t)rq->remote & 0x7) != 0) { 12133 printf("%s: warning: remote %p not on 8b boundary\n", 12134 __func__, rq->local); 12135 } 12136 #if 0 12137 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12138 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12139 rq->local, rq->remote, rq->size); 12140 #endif 12141 12142 isc_ret = ctl_dt_single(rq); 12143 if (isc_ret == CTL_HA_STATUS_WAIT) 12144 continue; 12145 12146 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12147 rq->ret = CTL_HA_STATUS_SUCCESS; 12148 } else { 12149 rq->ret = isc_ret; 12150 } 12151 callback(rq); 12152 goto bailout; 12153 } 12154 12155 bailout: 12156 return (retval); 12157 12158 } 12159 12160 static void 12161 ctl_datamove_remote_read(union ctl_io *io) 12162 { 12163 int retval; 12164 int i; 12165 12166 /* 12167 * This will send an error to the other controller in the case of a 12168 * failure. 12169 */ 12170 retval = ctl_datamove_remote_sgl_setup(io); 12171 if (retval != 0) 12172 return; 12173 12174 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12175 ctl_datamove_remote_read_cb); 12176 if ((retval != 0) 12177 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12178 /* 12179 * Make sure we free memory if there was an error.. The 12180 * ctl_datamove_remote_xfer() function will send the 12181 * datamove done message, or call the callback with an 12182 * error if there is a problem. 12183 */ 12184 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12185 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12186 } 12187 12188 return; 12189 } 12190 12191 /* 12192 * Process a datamove request from the other controller. This is used for 12193 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12194 * first. Once that is complete, the data gets DMAed into the remote 12195 * controller's memory. For reads, we DMA from the remote controller's 12196 * memory into our memory first, and then move it out to the FETD. 12197 */ 12198 static void 12199 ctl_datamove_remote(union ctl_io *io) 12200 { 12201 struct ctl_softc *softc; 12202 12203 softc = control_softc; 12204 12205 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12206 12207 /* 12208 * Note that we look for an aborted I/O here, but don't do some of 12209 * the other checks that ctl_datamove() normally does. We don't 12210 * need to run the task queue, because this I/O is on the ISC 12211 * queue, which is executed by the work thread after the task queue. 12212 * We don't need to run the datamove delay code, since that should 12213 * have been done if need be on the other controller. 12214 */ 12215 mtx_lock(&softc->ctl_lock); 12216 12217 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12218 12219 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12220 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12221 io->io_hdr.nexus.targ_port, 12222 io->io_hdr.nexus.targ_target.id, 12223 io->io_hdr.nexus.targ_lun); 12224 io->io_hdr.status = CTL_CMD_ABORTED; 12225 io->io_hdr.port_status = 31338; 12226 12227 mtx_unlock(&softc->ctl_lock); 12228 12229 ctl_send_datamove_done(io, /*have_lock*/ 0); 12230 12231 return; 12232 } 12233 12234 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12235 mtx_unlock(&softc->ctl_lock); 12236 ctl_datamove_remote_write(io); 12237 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12238 mtx_unlock(&softc->ctl_lock); 12239 ctl_datamove_remote_read(io); 12240 } else { 12241 union ctl_ha_msg msg; 12242 struct scsi_sense_data *sense; 12243 uint8_t sks[3]; 12244 int retry_count; 12245 12246 memset(&msg, 0, sizeof(msg)); 12247 12248 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12249 msg.hdr.status = CTL_SCSI_ERROR; 12250 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12251 12252 retry_count = 4243; 12253 12254 sense = &msg.scsi.sense_data; 12255 sks[0] = SSD_SCS_VALID; 12256 sks[1] = (retry_count >> 8) & 0xff; 12257 sks[2] = retry_count & 0xff; 12258 12259 /* "Internal target failure" */ 12260 scsi_set_sense_data(sense, 12261 /*sense_format*/ SSD_TYPE_NONE, 12262 /*current_error*/ 1, 12263 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12264 /*asc*/ 0x44, 12265 /*ascq*/ 0x00, 12266 /*type*/ SSD_ELEM_SKS, 12267 /*size*/ sizeof(sks), 12268 /*data*/ sks, 12269 SSD_ELEM_NONE); 12270 12271 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12272 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12273 ctl_failover_io(io, /*have_lock*/ 1); 12274 mtx_unlock(&softc->ctl_lock); 12275 return; 12276 } 12277 12278 mtx_unlock(&softc->ctl_lock); 12279 12280 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12281 CTL_HA_STATUS_SUCCESS) { 12282 /* XXX KDM what to do if this fails? */ 12283 } 12284 return; 12285 } 12286 12287 } 12288 12289 static int 12290 ctl_process_done(union ctl_io *io, int have_lock) 12291 { 12292 struct ctl_lun *lun; 12293 struct ctl_softc *ctl_softc; 12294 void (*fe_done)(union ctl_io *io); 12295 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12296 12297 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12298 12299 fe_done = 12300 control_softc->ctl_ports[targ_port]->fe_done; 12301 12302 #ifdef CTL_TIME_IO 12303 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12304 char str[256]; 12305 char path_str[64]; 12306 struct sbuf sb; 12307 12308 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12309 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12310 12311 sbuf_cat(&sb, path_str); 12312 switch (io->io_hdr.io_type) { 12313 case CTL_IO_SCSI: 12314 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12315 sbuf_printf(&sb, "\n"); 12316 sbuf_cat(&sb, path_str); 12317 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12318 io->scsiio.tag_num, io->scsiio.tag_type); 12319 break; 12320 case CTL_IO_TASK: 12321 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12322 "Tag Type: %d\n", io->taskio.task_action, 12323 io->taskio.tag_num, io->taskio.tag_type); 12324 break; 12325 default: 12326 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12327 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12328 break; 12329 } 12330 sbuf_cat(&sb, path_str); 12331 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12332 (intmax_t)time_uptime - io->io_hdr.start_time); 12333 sbuf_finish(&sb); 12334 printf("%s", sbuf_data(&sb)); 12335 } 12336 #endif /* CTL_TIME_IO */ 12337 12338 switch (io->io_hdr.io_type) { 12339 case CTL_IO_SCSI: 12340 break; 12341 case CTL_IO_TASK: 12342 ctl_io_error_print(io, NULL); 12343 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12344 ctl_free_io_internal(io, /*have_lock*/ 0); 12345 else 12346 fe_done(io); 12347 return (CTL_RETVAL_COMPLETE); 12348 break; 12349 default: 12350 printf("ctl_process_done: invalid io type %d\n", 12351 io->io_hdr.io_type); 12352 panic("ctl_process_done: invalid io type %d\n", 12353 io->io_hdr.io_type); 12354 break; /* NOTREACHED */ 12355 } 12356 12357 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12358 if (lun == NULL) { 12359 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12360 io->io_hdr.nexus.targ_lun)); 12361 fe_done(io); 12362 goto bailout; 12363 } 12364 ctl_softc = lun->ctl_softc; 12365 12366 /* 12367 * Remove this from the OOA queue. 12368 */ 12369 if (have_lock == 0) 12370 mtx_lock(&ctl_softc->ctl_lock); 12371 12372 /* 12373 * Check to see if we have any errors to inject here. We only 12374 * inject errors for commands that don't already have errors set. 12375 */ 12376 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12377 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12378 ctl_inject_error(lun, io); 12379 12380 /* 12381 * XXX KDM how do we treat commands that aren't completed 12382 * successfully? 12383 * 12384 * XXX KDM should we also track I/O latency? 12385 */ 12386 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12387 uint32_t blocksize; 12388 #ifdef CTL_TIME_IO 12389 struct bintime cur_bt; 12390 #endif 12391 12392 if ((lun->be_lun != NULL) 12393 && (lun->be_lun->blocksize != 0)) 12394 blocksize = lun->be_lun->blocksize; 12395 else 12396 blocksize = 512; 12397 12398 switch (io->io_hdr.io_type) { 12399 case CTL_IO_SCSI: { 12400 int isread; 12401 struct ctl_lba_len lbalen; 12402 12403 isread = 0; 12404 switch (io->scsiio.cdb[0]) { 12405 case READ_6: 12406 case READ_10: 12407 case READ_12: 12408 case READ_16: 12409 isread = 1; 12410 /* FALLTHROUGH */ 12411 case WRITE_6: 12412 case WRITE_10: 12413 case WRITE_12: 12414 case WRITE_16: 12415 case WRITE_VERIFY_10: 12416 case WRITE_VERIFY_12: 12417 case WRITE_VERIFY_16: 12418 memcpy(&lbalen, io->io_hdr.ctl_private[ 12419 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12420 12421 if (isread) { 12422 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12423 lbalen.len * blocksize; 12424 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12425 12426 #ifdef CTL_TIME_IO 12427 bintime_add( 12428 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12429 &io->io_hdr.dma_bt); 12430 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12431 io->io_hdr.num_dmas; 12432 getbintime(&cur_bt); 12433 bintime_sub(&cur_bt, 12434 &io->io_hdr.start_bt); 12435 12436 bintime_add( 12437 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12438 &cur_bt); 12439 12440 #if 0 12441 cs_prof_gettime(&cur_ticks); 12442 lun->stats.time[CTL_STATS_READ] += 12443 cur_ticks - 12444 io->io_hdr.start_ticks; 12445 #endif 12446 #if 0 12447 lun->stats.time[CTL_STATS_READ] += 12448 jiffies - io->io_hdr.start_time; 12449 #endif 12450 #endif /* CTL_TIME_IO */ 12451 } else { 12452 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12453 lbalen.len * blocksize; 12454 lun->stats.ports[targ_port].operations[ 12455 CTL_STATS_WRITE]++; 12456 12457 #ifdef CTL_TIME_IO 12458 bintime_add( 12459 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12460 &io->io_hdr.dma_bt); 12461 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12462 io->io_hdr.num_dmas; 12463 getbintime(&cur_bt); 12464 bintime_sub(&cur_bt, 12465 &io->io_hdr.start_bt); 12466 12467 bintime_add( 12468 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12469 &cur_bt); 12470 #if 0 12471 cs_prof_gettime(&cur_ticks); 12472 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12473 cur_ticks - 12474 io->io_hdr.start_ticks; 12475 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12476 jiffies - io->io_hdr.start_time; 12477 #endif 12478 #endif /* CTL_TIME_IO */ 12479 } 12480 break; 12481 default: 12482 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12483 12484 #ifdef CTL_TIME_IO 12485 bintime_add( 12486 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12487 &io->io_hdr.dma_bt); 12488 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12489 io->io_hdr.num_dmas; 12490 getbintime(&cur_bt); 12491 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12492 12493 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12494 &cur_bt); 12495 12496 #if 0 12497 cs_prof_gettime(&cur_ticks); 12498 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12499 cur_ticks - 12500 io->io_hdr.start_ticks; 12501 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12502 jiffies - io->io_hdr.start_time; 12503 #endif 12504 #endif /* CTL_TIME_IO */ 12505 break; 12506 } 12507 break; 12508 } 12509 default: 12510 break; 12511 } 12512 } 12513 12514 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12515 12516 /* 12517 * Run through the blocked queue on this LUN and see if anything 12518 * has become unblocked, now that this transaction is done. 12519 */ 12520 ctl_check_blocked(lun); 12521 12522 /* 12523 * If the LUN has been invalidated, free it if there is nothing 12524 * left on its OOA queue. 12525 */ 12526 if ((lun->flags & CTL_LUN_INVALID) 12527 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12528 ctl_free_lun(lun); 12529 12530 /* 12531 * If this command has been aborted, make sure we set the status 12532 * properly. The FETD is responsible for freeing the I/O and doing 12533 * whatever it needs to do to clean up its state. 12534 */ 12535 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12536 io->io_hdr.status = CTL_CMD_ABORTED; 12537 12538 /* 12539 * We print out status for every task management command. For SCSI 12540 * commands, we filter out any unit attention errors; they happen 12541 * on every boot, and would clutter up the log. Note: task 12542 * management commands aren't printed here, they are printed above, 12543 * since they should never even make it down here. 12544 */ 12545 switch (io->io_hdr.io_type) { 12546 case CTL_IO_SCSI: { 12547 int error_code, sense_key, asc, ascq; 12548 12549 sense_key = 0; 12550 12551 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12552 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12553 /* 12554 * Since this is just for printing, no need to 12555 * show errors here. 12556 */ 12557 scsi_extract_sense_len(&io->scsiio.sense_data, 12558 io->scsiio.sense_len, 12559 &error_code, 12560 &sense_key, 12561 &asc, 12562 &ascq, 12563 /*show_errors*/ 0); 12564 } 12565 12566 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12567 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12568 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12569 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12570 12571 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12572 ctl_softc->skipped_prints++; 12573 if (have_lock == 0) 12574 mtx_unlock(&ctl_softc->ctl_lock); 12575 } else { 12576 uint32_t skipped_prints; 12577 12578 skipped_prints = ctl_softc->skipped_prints; 12579 12580 ctl_softc->skipped_prints = 0; 12581 ctl_softc->last_print_jiffies = time_uptime; 12582 12583 if (have_lock == 0) 12584 mtx_unlock(&ctl_softc->ctl_lock); 12585 if (skipped_prints > 0) { 12586 #ifdef NEEDTOPORT 12587 csevent_log(CSC_CTL | CSC_SHELF_SW | 12588 CTL_ERROR_REPORT, 12589 csevent_LogType_Trace, 12590 csevent_Severity_Information, 12591 csevent_AlertLevel_Green, 12592 csevent_FRU_Firmware, 12593 csevent_FRU_Unknown, 12594 "High CTL error volume, %d prints " 12595 "skipped", skipped_prints); 12596 #endif 12597 } 12598 ctl_io_error_print(io, NULL); 12599 } 12600 } else { 12601 if (have_lock == 0) 12602 mtx_unlock(&ctl_softc->ctl_lock); 12603 } 12604 break; 12605 } 12606 case CTL_IO_TASK: 12607 if (have_lock == 0) 12608 mtx_unlock(&ctl_softc->ctl_lock); 12609 ctl_io_error_print(io, NULL); 12610 break; 12611 default: 12612 if (have_lock == 0) 12613 mtx_unlock(&ctl_softc->ctl_lock); 12614 break; 12615 } 12616 12617 /* 12618 * Tell the FETD or the other shelf controller we're done with this 12619 * command. Note that only SCSI commands get to this point. Task 12620 * management commands are completed above. 12621 * 12622 * We only send status to the other controller if we're in XFER 12623 * mode. In SER_ONLY mode, the I/O is done on the controller that 12624 * received the I/O (from CTL's perspective), and so the status is 12625 * generated there. 12626 * 12627 * XXX KDM if we hold the lock here, we could cause a deadlock 12628 * if the frontend comes back in in this context to queue 12629 * something. 12630 */ 12631 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12632 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12633 union ctl_ha_msg msg; 12634 12635 memset(&msg, 0, sizeof(msg)); 12636 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12637 msg.hdr.original_sc = io->io_hdr.original_sc; 12638 msg.hdr.nexus = io->io_hdr.nexus; 12639 msg.hdr.status = io->io_hdr.status; 12640 msg.scsi.scsi_status = io->scsiio.scsi_status; 12641 msg.scsi.tag_num = io->scsiio.tag_num; 12642 msg.scsi.tag_type = io->scsiio.tag_type; 12643 msg.scsi.sense_len = io->scsiio.sense_len; 12644 msg.scsi.sense_residual = io->scsiio.sense_residual; 12645 msg.scsi.residual = io->scsiio.residual; 12646 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12647 sizeof(io->scsiio.sense_data)); 12648 /* 12649 * We copy this whether or not this is an I/O-related 12650 * command. Otherwise, we'd have to go and check to see 12651 * whether it's a read/write command, and it really isn't 12652 * worth it. 12653 */ 12654 memcpy(&msg.scsi.lbalen, 12655 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12656 sizeof(msg.scsi.lbalen)); 12657 12658 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12659 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12660 /* XXX do something here */ 12661 } 12662 12663 ctl_free_io_internal(io, /*have_lock*/ 0); 12664 } else 12665 fe_done(io); 12666 12667 bailout: 12668 12669 return (CTL_RETVAL_COMPLETE); 12670 } 12671 12672 /* 12673 * Front end should call this if it doesn't do autosense. When the request 12674 * sense comes back in from the initiator, we'll dequeue this and send it. 12675 */ 12676 int 12677 ctl_queue_sense(union ctl_io *io) 12678 { 12679 struct ctl_lun *lun; 12680 struct ctl_softc *ctl_softc; 12681 uint32_t initidx, targ_lun; 12682 12683 ctl_softc = control_softc; 12684 12685 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 12686 12687 /* 12688 * LUN lookup will likely move to the ctl_work_thread() once we 12689 * have our new queueing infrastructure (that doesn't put things on 12690 * a per-LUN queue initially). That is so that we can handle 12691 * things like an INQUIRY to a LUN that we don't have enabled. We 12692 * can't deal with that right now. 12693 */ 12694 mtx_lock(&ctl_softc->ctl_lock); 12695 12696 /* 12697 * If we don't have a LUN for this, just toss the sense 12698 * information. 12699 */ 12700 targ_lun = io->io_hdr.nexus.targ_lun; 12701 if (io->io_hdr.nexus.lun_map_fn != NULL) 12702 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 12703 if ((targ_lun < CTL_MAX_LUNS) 12704 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 12705 lun = ctl_softc->ctl_luns[targ_lun]; 12706 else 12707 goto bailout; 12708 12709 initidx = ctl_get_initindex(&io->io_hdr.nexus); 12710 12711 /* 12712 * Already have CA set for this LUN...toss the sense information. 12713 */ 12714 if (ctl_is_set(lun->have_ca, initidx)) 12715 goto bailout; 12716 12717 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 12718 ctl_min(sizeof(lun->pending_sense[initidx].sense), 12719 sizeof(io->scsiio.sense_data))); 12720 ctl_set_mask(lun->have_ca, initidx); 12721 12722 bailout: 12723 mtx_unlock(&ctl_softc->ctl_lock); 12724 12725 ctl_free_io(io); 12726 12727 return (CTL_RETVAL_COMPLETE); 12728 } 12729 12730 /* 12731 * Primary command inlet from frontend ports. All SCSI and task I/O 12732 * requests must go through this function. 12733 */ 12734 int 12735 ctl_queue(union ctl_io *io) 12736 { 12737 struct ctl_softc *ctl_softc; 12738 12739 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 12740 12741 ctl_softc = control_softc; 12742 12743 #ifdef CTL_TIME_IO 12744 io->io_hdr.start_time = time_uptime; 12745 getbintime(&io->io_hdr.start_bt); 12746 #endif /* CTL_TIME_IO */ 12747 12748 mtx_lock(&ctl_softc->ctl_lock); 12749 12750 switch (io->io_hdr.io_type) { 12751 case CTL_IO_SCSI: 12752 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 12753 links); 12754 break; 12755 case CTL_IO_TASK: 12756 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 12757 /* 12758 * Set the task pending flag. This is necessary to close a 12759 * race condition with the FETD: 12760 * 12761 * - FETD submits a task management command, like an abort. 12762 * - Back end calls fe_datamove() to move the data for the 12763 * aborted command. The FETD can't really accept it, but 12764 * if it did, it would end up transmitting data for a 12765 * command that the initiator told us to abort. 12766 * 12767 * We close the race condition by setting the flag here, 12768 * and checking it in ctl_datamove(), before calling the 12769 * FETD's fe_datamove routine. If we've got a task 12770 * pending, we run the task queue and then check to see 12771 * whether our particular I/O has been aborted. 12772 */ 12773 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 12774 break; 12775 default: 12776 mtx_unlock(&ctl_softc->ctl_lock); 12777 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 12778 return (-EINVAL); 12779 break; /* NOTREACHED */ 12780 } 12781 mtx_unlock(&ctl_softc->ctl_lock); 12782 12783 ctl_wakeup_thread(); 12784 12785 return (CTL_RETVAL_COMPLETE); 12786 } 12787 12788 #ifdef CTL_IO_DELAY 12789 static void 12790 ctl_done_timer_wakeup(void *arg) 12791 { 12792 union ctl_io *io; 12793 12794 io = (union ctl_io *)arg; 12795 ctl_done_lock(io, /*have_lock*/ 0); 12796 } 12797 #endif /* CTL_IO_DELAY */ 12798 12799 void 12800 ctl_done_lock(union ctl_io *io, int have_lock) 12801 { 12802 struct ctl_softc *ctl_softc; 12803 #ifndef CTL_DONE_THREAD 12804 union ctl_io *xio; 12805 #endif /* !CTL_DONE_THREAD */ 12806 12807 ctl_softc = control_softc; 12808 12809 if (have_lock == 0) 12810 mtx_lock(&ctl_softc->ctl_lock); 12811 12812 /* 12813 * Enable this to catch duplicate completion issues. 12814 */ 12815 #if 0 12816 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 12817 printf("%s: type %d msg %d cdb %x iptl: " 12818 "%d:%d:%d:%d tag 0x%04x " 12819 "flag %#x status %x\n", 12820 __func__, 12821 io->io_hdr.io_type, 12822 io->io_hdr.msg_type, 12823 io->scsiio.cdb[0], 12824 io->io_hdr.nexus.initid.id, 12825 io->io_hdr.nexus.targ_port, 12826 io->io_hdr.nexus.targ_target.id, 12827 io->io_hdr.nexus.targ_lun, 12828 (io->io_hdr.io_type == 12829 CTL_IO_TASK) ? 12830 io->taskio.tag_num : 12831 io->scsiio.tag_num, 12832 io->io_hdr.flags, 12833 io->io_hdr.status); 12834 } else 12835 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 12836 #endif 12837 12838 /* 12839 * This is an internal copy of an I/O, and should not go through 12840 * the normal done processing logic. 12841 */ 12842 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 12843 if (have_lock == 0) 12844 mtx_unlock(&ctl_softc->ctl_lock); 12845 return; 12846 } 12847 12848 /* 12849 * We need to send a msg to the serializing shelf to finish the IO 12850 * as well. We don't send a finish message to the other shelf if 12851 * this is a task management command. Task management commands 12852 * aren't serialized in the OOA queue, but rather just executed on 12853 * both shelf controllers for commands that originated on that 12854 * controller. 12855 */ 12856 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 12857 && (io->io_hdr.io_type != CTL_IO_TASK)) { 12858 union ctl_ha_msg msg_io; 12859 12860 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 12861 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 12862 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 12863 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 12864 } 12865 /* continue on to finish IO */ 12866 } 12867 #ifdef CTL_IO_DELAY 12868 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12869 struct ctl_lun *lun; 12870 12871 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12872 12873 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12874 } else { 12875 struct ctl_lun *lun; 12876 12877 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12878 12879 if ((lun != NULL) 12880 && (lun->delay_info.done_delay > 0)) { 12881 struct callout *callout; 12882 12883 callout = (struct callout *)&io->io_hdr.timer_bytes; 12884 callout_init(callout, /*mpsafe*/ 1); 12885 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12886 callout_reset(callout, 12887 lun->delay_info.done_delay * hz, 12888 ctl_done_timer_wakeup, io); 12889 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 12890 lun->delay_info.done_delay = 0; 12891 if (have_lock == 0) 12892 mtx_unlock(&ctl_softc->ctl_lock); 12893 return; 12894 } 12895 } 12896 #endif /* CTL_IO_DELAY */ 12897 12898 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 12899 12900 #ifdef CTL_DONE_THREAD 12901 if (have_lock == 0) 12902 mtx_unlock(&ctl_softc->ctl_lock); 12903 12904 ctl_wakeup_thread(); 12905 #else /* CTL_DONE_THREAD */ 12906 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 12907 xio != NULL; 12908 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 12909 12910 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 12911 12912 ctl_process_done(xio, /*have_lock*/ 1); 12913 } 12914 if (have_lock == 0) 12915 mtx_unlock(&ctl_softc->ctl_lock); 12916 #endif /* CTL_DONE_THREAD */ 12917 } 12918 12919 void 12920 ctl_done(union ctl_io *io) 12921 { 12922 ctl_done_lock(io, /*have_lock*/ 0); 12923 } 12924 12925 int 12926 ctl_isc(struct ctl_scsiio *ctsio) 12927 { 12928 struct ctl_lun *lun; 12929 int retval; 12930 12931 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12932 12933 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 12934 12935 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 12936 12937 retval = lun->backend->data_submit((union ctl_io *)ctsio); 12938 12939 return (retval); 12940 } 12941 12942 12943 static void 12944 ctl_work_thread(void *arg) 12945 { 12946 struct ctl_softc *softc; 12947 union ctl_io *io; 12948 struct ctl_be_lun *be_lun; 12949 int retval; 12950 12951 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 12952 12953 softc = (struct ctl_softc *)arg; 12954 if (softc == NULL) 12955 return; 12956 12957 mtx_lock(&softc->ctl_lock); 12958 for (;;) { 12959 retval = 0; 12960 12961 /* 12962 * We handle the queues in this order: 12963 * - task management 12964 * - ISC 12965 * - done queue (to free up resources, unblock other commands) 12966 * - RtR queue 12967 * - incoming queue 12968 * 12969 * If those queues are empty, we break out of the loop and 12970 * go to sleep. 12971 */ 12972 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 12973 if (io != NULL) { 12974 ctl_run_task_queue(softc); 12975 continue; 12976 } 12977 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 12978 if (io != NULL) { 12979 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 12980 ctl_handle_isc(io); 12981 continue; 12982 } 12983 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 12984 if (io != NULL) { 12985 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 12986 /* clear any blocked commands, call fe_done */ 12987 mtx_unlock(&softc->ctl_lock); 12988 /* 12989 * XXX KDM 12990 * Call this without a lock for now. This will 12991 * depend on whether there is any way the FETD can 12992 * sleep or deadlock if called with the CTL lock 12993 * held. 12994 */ 12995 retval = ctl_process_done(io, /*have_lock*/ 0); 12996 mtx_lock(&softc->ctl_lock); 12997 continue; 12998 } 12999 if (!ctl_pause_rtr) { 13000 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13001 if (io != NULL) { 13002 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13003 mtx_unlock(&softc->ctl_lock); 13004 goto execute; 13005 } 13006 } 13007 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13008 if (io != NULL) { 13009 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13010 mtx_unlock(&softc->ctl_lock); 13011 ctl_scsiio_precheck(softc, &io->scsiio); 13012 mtx_lock(&softc->ctl_lock); 13013 continue; 13014 } 13015 /* 13016 * We might want to move this to a separate thread, so that 13017 * configuration requests (in this case LUN creations) 13018 * won't impact the I/O path. 13019 */ 13020 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13021 if (be_lun != NULL) { 13022 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13023 mtx_unlock(&softc->ctl_lock); 13024 ctl_create_lun(be_lun); 13025 mtx_lock(&softc->ctl_lock); 13026 continue; 13027 } 13028 13029 /* XXX KDM use the PDROP flag?? */ 13030 /* Sleep until we have something to do. */ 13031 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0); 13032 13033 /* Back to the top of the loop to see what woke us up. */ 13034 continue; 13035 13036 execute: 13037 retval = ctl_scsiio(&io->scsiio); 13038 switch (retval) { 13039 case CTL_RETVAL_COMPLETE: 13040 break; 13041 default: 13042 /* 13043 * Probably need to make sure this doesn't happen. 13044 */ 13045 break; 13046 } 13047 mtx_lock(&softc->ctl_lock); 13048 } 13049 } 13050 13051 void 13052 ctl_wakeup_thread() 13053 { 13054 struct ctl_softc *softc; 13055 13056 softc = control_softc; 13057 13058 wakeup(softc); 13059 } 13060 13061 /* Initialization and failover */ 13062 13063 void 13064 ctl_init_isc_msg(void) 13065 { 13066 printf("CTL: Still calling this thing\n"); 13067 } 13068 13069 /* 13070 * Init component 13071 * Initializes component into configuration defined by bootMode 13072 * (see hasc-sv.c) 13073 * returns hasc_Status: 13074 * OK 13075 * ERROR - fatal error 13076 */ 13077 static ctl_ha_comp_status 13078 ctl_isc_init(struct ctl_ha_component *c) 13079 { 13080 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13081 13082 c->status = ret; 13083 return ret; 13084 } 13085 13086 /* Start component 13087 * Starts component in state requested. If component starts successfully, 13088 * it must set its own state to the requestrd state 13089 * When requested state is HASC_STATE_HA, the component may refine it 13090 * by adding _SLAVE or _MASTER flags. 13091 * Currently allowed state transitions are: 13092 * UNKNOWN->HA - initial startup 13093 * UNKNOWN->SINGLE - initial startup when no parter detected 13094 * HA->SINGLE - failover 13095 * returns ctl_ha_comp_status: 13096 * OK - component successfully started in requested state 13097 * FAILED - could not start the requested state, failover may 13098 * be possible 13099 * ERROR - fatal error detected, no future startup possible 13100 */ 13101 static ctl_ha_comp_status 13102 ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13103 { 13104 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13105 13106 printf("%s: go\n", __func__); 13107 13108 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13109 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13110 ctl_is_single = 0; 13111 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13112 != CTL_HA_STATUS_SUCCESS) { 13113 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13114 ret = CTL_HA_COMP_STATUS_ERROR; 13115 } 13116 } else if (CTL_HA_STATE_IS_HA(c->state) 13117 && CTL_HA_STATE_IS_SINGLE(state)){ 13118 // HA->SINGLE transition 13119 ctl_failover(); 13120 ctl_is_single = 1; 13121 } else { 13122 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13123 c->state, state); 13124 ret = CTL_HA_COMP_STATUS_ERROR; 13125 } 13126 if (CTL_HA_STATE_IS_SINGLE(state)) 13127 ctl_is_single = 1; 13128 13129 c->state = state; 13130 c->status = ret; 13131 return ret; 13132 } 13133 13134 /* 13135 * Quiesce component 13136 * The component must clear any error conditions (set status to OK) and 13137 * prepare itself to another Start call 13138 * returns ctl_ha_comp_status: 13139 * OK 13140 * ERROR 13141 */ 13142 static ctl_ha_comp_status 13143 ctl_isc_quiesce(struct ctl_ha_component *c) 13144 { 13145 int ret = CTL_HA_COMP_STATUS_OK; 13146 13147 ctl_pause_rtr = 1; 13148 c->status = ret; 13149 return ret; 13150 } 13151 13152 struct ctl_ha_component ctl_ha_component_ctlisc = 13153 { 13154 .name = "CTL ISC", 13155 .state = CTL_HA_STATE_UNKNOWN, 13156 .init = ctl_isc_init, 13157 .start = ctl_isc_start, 13158 .quiesce = ctl_isc_quiesce 13159 }; 13160 13161 /* 13162 * vim: ts=8 13163 */ 13164