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