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 #include "opt_ctl.h" 83 84 struct ctl_softc *control_softc = NULL; 85 86 /* 87 * The default is to run with CTL_DONE_THREAD turned on. Completed 88 * transactions are queued for processing by the CTL work thread. When 89 * CTL_DONE_THREAD is not defined, completed transactions are processed in 90 * the caller's context. 91 */ 92 #define CTL_DONE_THREAD 93 94 /* 95 * Use the serial number and device ID provided by the backend, rather than 96 * making up our own. 97 */ 98 #define CTL_USE_BACKEND_SN 99 100 /* 101 * Size and alignment macros needed for Copan-specific HA hardware. These 102 * can go away when the HA code is re-written, and uses busdma for any 103 * hardware. 104 */ 105 #define CTL_ALIGN_8B(target, source, type) \ 106 if (((uint32_t)source & 0x7) != 0) \ 107 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 108 else \ 109 target = (type)source; 110 111 #define CTL_SIZE_8B(target, size) \ 112 if ((size & 0x7) != 0) \ 113 target = size + (0x8 - (size & 0x7)); \ 114 else \ 115 target = size; 116 117 #define CTL_ALIGN_8B_MARGIN 16 118 119 /* 120 * Template mode pages. 121 */ 122 123 /* 124 * Note that these are default values only. The actual values will be 125 * filled in when the user does a mode sense. 126 */ 127 static struct copan_power_subpage power_page_default = { 128 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 129 /*subpage*/ PWR_SUBPAGE_CODE, 130 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 131 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 132 /*page_version*/ PWR_VERSION, 133 /* total_luns */ 26, 134 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 135 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 136 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 137 0, 0, 0, 0, 0, 0} 138 }; 139 140 static struct copan_power_subpage power_page_changeable = { 141 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 142 /*subpage*/ PWR_SUBPAGE_CODE, 143 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 144 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 145 /*page_version*/ 0, 146 /* total_luns */ 0, 147 /* max_active_luns*/ 0, 148 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 149 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 150 0, 0, 0, 0, 0, 0} 151 }; 152 153 static struct copan_aps_subpage aps_page_default = { 154 APS_PAGE_CODE | SMPH_SPF, //page_code 155 APS_SUBPAGE_CODE, //subpage 156 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 157 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 158 APS_VERSION, //page_version 159 0, //lock_active 160 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 161 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 162 0, 0, 0, 0, 0} //reserved 163 }; 164 165 static struct copan_aps_subpage aps_page_changeable = { 166 APS_PAGE_CODE | SMPH_SPF, //page_code 167 APS_SUBPAGE_CODE, //subpage 168 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 169 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 170 0, //page_version 171 0, //lock_active 172 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 173 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 174 0, 0, 0, 0, 0} //reserved 175 }; 176 177 static struct copan_debugconf_subpage debugconf_page_default = { 178 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 179 DBGCNF_SUBPAGE_CODE, /* subpage */ 180 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 181 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 182 DBGCNF_VERSION, /* page_version */ 183 {CTL_TIME_IO_DEFAULT_SECS>>8, 184 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 185 }; 186 187 static struct copan_debugconf_subpage debugconf_page_changeable = { 188 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 189 DBGCNF_SUBPAGE_CODE, /* subpage */ 190 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 191 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 192 0, /* page_version */ 193 {0xff,0xff}, /* ctl_time_io_secs */ 194 }; 195 196 static struct scsi_format_page format_page_default = { 197 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 198 /*page_length*/sizeof(struct scsi_format_page) - 2, 199 /*tracks_per_zone*/ {0, 0}, 200 /*alt_sectors_per_zone*/ {0, 0}, 201 /*alt_tracks_per_zone*/ {0, 0}, 202 /*alt_tracks_per_lun*/ {0, 0}, 203 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 204 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 205 /*bytes_per_sector*/ {0, 0}, 206 /*interleave*/ {0, 0}, 207 /*track_skew*/ {0, 0}, 208 /*cylinder_skew*/ {0, 0}, 209 /*flags*/ SFP_HSEC, 210 /*reserved*/ {0, 0, 0} 211 }; 212 213 static struct scsi_format_page format_page_changeable = { 214 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 215 /*page_length*/sizeof(struct scsi_format_page) - 2, 216 /*tracks_per_zone*/ {0, 0}, 217 /*alt_sectors_per_zone*/ {0, 0}, 218 /*alt_tracks_per_zone*/ {0, 0}, 219 /*alt_tracks_per_lun*/ {0, 0}, 220 /*sectors_per_track*/ {0, 0}, 221 /*bytes_per_sector*/ {0, 0}, 222 /*interleave*/ {0, 0}, 223 /*track_skew*/ {0, 0}, 224 /*cylinder_skew*/ {0, 0}, 225 /*flags*/ 0, 226 /*reserved*/ {0, 0, 0} 227 }; 228 229 static struct scsi_rigid_disk_page rigid_disk_page_default = { 230 /*page_code*/SMS_RIGID_DISK_PAGE, 231 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 232 /*cylinders*/ {0, 0, 0}, 233 /*heads*/ CTL_DEFAULT_HEADS, 234 /*start_write_precomp*/ {0, 0, 0}, 235 /*start_reduced_current*/ {0, 0, 0}, 236 /*step_rate*/ {0, 0}, 237 /*landing_zone_cylinder*/ {0, 0, 0}, 238 /*rpl*/ SRDP_RPL_DISABLED, 239 /*rotational_offset*/ 0, 240 /*reserved1*/ 0, 241 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 242 CTL_DEFAULT_ROTATION_RATE & 0xff}, 243 /*reserved2*/ {0, 0} 244 }; 245 246 static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 247 /*page_code*/SMS_RIGID_DISK_PAGE, 248 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 249 /*cylinders*/ {0, 0, 0}, 250 /*heads*/ 0, 251 /*start_write_precomp*/ {0, 0, 0}, 252 /*start_reduced_current*/ {0, 0, 0}, 253 /*step_rate*/ {0, 0}, 254 /*landing_zone_cylinder*/ {0, 0, 0}, 255 /*rpl*/ 0, 256 /*rotational_offset*/ 0, 257 /*reserved1*/ 0, 258 /*rotation_rate*/ {0, 0}, 259 /*reserved2*/ {0, 0} 260 }; 261 262 static struct scsi_caching_page caching_page_default = { 263 /*page_code*/SMS_CACHING_PAGE, 264 /*page_length*/sizeof(struct scsi_caching_page) - 2, 265 /*flags1*/ SCP_DISC | SCP_WCE, 266 /*ret_priority*/ 0, 267 /*disable_pf_transfer_len*/ {0xff, 0xff}, 268 /*min_prefetch*/ {0, 0}, 269 /*max_prefetch*/ {0xff, 0xff}, 270 /*max_pf_ceiling*/ {0xff, 0xff}, 271 /*flags2*/ 0, 272 /*cache_segments*/ 0, 273 /*cache_seg_size*/ {0, 0}, 274 /*reserved*/ 0, 275 /*non_cache_seg_size*/ {0, 0, 0} 276 }; 277 278 static struct scsi_caching_page caching_page_changeable = { 279 /*page_code*/SMS_CACHING_PAGE, 280 /*page_length*/sizeof(struct scsi_caching_page) - 2, 281 /*flags1*/ 0, 282 /*ret_priority*/ 0, 283 /*disable_pf_transfer_len*/ {0, 0}, 284 /*min_prefetch*/ {0, 0}, 285 /*max_prefetch*/ {0, 0}, 286 /*max_pf_ceiling*/ {0, 0}, 287 /*flags2*/ 0, 288 /*cache_segments*/ 0, 289 /*cache_seg_size*/ {0, 0}, 290 /*reserved*/ 0, 291 /*non_cache_seg_size*/ {0, 0, 0} 292 }; 293 294 static struct scsi_control_page control_page_default = { 295 /*page_code*/SMS_CONTROL_MODE_PAGE, 296 /*page_length*/sizeof(struct scsi_control_page) - 2, 297 /*rlec*/0, 298 /*queue_flags*/0, 299 /*eca_and_aen*/0, 300 /*reserved*/0, 301 /*aen_holdoff_period*/{0, 0} 302 }; 303 304 static struct scsi_control_page control_page_changeable = { 305 /*page_code*/SMS_CONTROL_MODE_PAGE, 306 /*page_length*/sizeof(struct scsi_control_page) - 2, 307 /*rlec*/SCP_DSENSE, 308 /*queue_flags*/0, 309 /*eca_and_aen*/0, 310 /*reserved*/0, 311 /*aen_holdoff_period*/{0, 0} 312 }; 313 314 315 /* 316 * XXX KDM move these into the softc. 317 */ 318 static int rcv_sync_msg; 319 static int persis_offset; 320 static uint8_t ctl_pause_rtr; 321 static int ctl_is_single = 1; 322 static int index_to_aps_page; 323 #ifdef CTL_DISABLE 324 int ctl_disable = 1; 325 #else 326 int ctl_disable = 0; 327 #endif 328 329 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 330 SYSCTL_INT(_kern_cam_ctl, OID_AUTO, disable, CTLFLAG_RDTUN, &ctl_disable, 0, 331 "Disable CTL"); 332 TUNABLE_INT("kern.cam.ctl.disable", &ctl_disable); 333 334 /* 335 * Serial number (0x80), device id (0x83), and supported pages (0x00) 336 */ 337 #define SCSI_EVPD_NUM_SUPPORTED_PAGES 3 338 339 static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 340 int param); 341 static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 342 static int ctl_init(void); 343 void ctl_shutdown(void); 344 static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 345 static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 346 static void ctl_ioctl_online(void *arg); 347 static void ctl_ioctl_offline(void *arg); 348 static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 349 static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 350 static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 351 static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 352 static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 353 static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 354 static int ctl_ioctl_submit_wait(union ctl_io *io); 355 static void ctl_ioctl_datamove(union ctl_io *io); 356 static void ctl_ioctl_done(union ctl_io *io); 357 static void ctl_ioctl_hard_startstop_callback(void *arg, 358 struct cfi_metatask *metatask); 359 static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 360 static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 361 struct ctl_ooa *ooa_hdr, 362 struct ctl_ooa_entry *kern_entries); 363 static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 364 struct thread *td); 365 uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 366 uint32_t ctl_port_idx(int port_num); 367 #ifdef unused 368 static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 369 uint32_t targ_target, uint32_t targ_lun, 370 int can_wait); 371 static void ctl_kfree_io(union ctl_io *io); 372 #endif /* unused */ 373 static void ctl_free_io_internal(union ctl_io *io, int have_lock); 374 static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 375 struct ctl_be_lun *be_lun, struct ctl_id target_id); 376 static int ctl_free_lun(struct ctl_lun *lun); 377 static void ctl_create_lun(struct ctl_be_lun *be_lun); 378 /** 379 static void ctl_failover_change_pages(struct ctl_softc *softc, 380 struct ctl_scsiio *ctsio, int master); 381 **/ 382 383 static int ctl_do_mode_select(union ctl_io *io); 384 static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 385 uint64_t res_key, uint64_t sa_res_key, 386 uint8_t type, uint32_t residx, 387 struct ctl_scsiio *ctsio, 388 struct scsi_per_res_out *cdb, 389 struct scsi_per_res_out_parms* param); 390 static void ctl_pro_preempt_other(struct ctl_lun *lun, 391 union ctl_ha_msg *msg); 392 static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 393 static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 394 static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 395 static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 396 static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 397 static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 398 static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 399 static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 400 static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 401 union ctl_io *ooa_io); 402 static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 403 union ctl_io *starting_io); 404 static int ctl_check_blocked(struct ctl_lun *lun); 405 static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 406 struct ctl_lun *lun, 407 struct ctl_cmd_entry *entry, 408 struct ctl_scsiio *ctsio); 409 //static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 410 static void ctl_failover(void); 411 static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 412 struct ctl_scsiio *ctsio); 413 static int ctl_scsiio(struct ctl_scsiio *ctsio); 414 415 static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 416 static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 417 ctl_ua_type ua_type); 418 static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 419 ctl_ua_type ua_type); 420 static int ctl_abort_task(union ctl_io *io); 421 static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 422 #ifdef CTL_IO_DELAY 423 static void ctl_datamove_timer_wakeup(void *arg); 424 static void ctl_done_timer_wakeup(void *arg); 425 #endif /* CTL_IO_DELAY */ 426 427 static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 428 static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 429 static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 430 static void ctl_datamove_remote_write(union ctl_io *io); 431 static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 432 static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 433 static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 434 static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 435 ctl_ha_dt_cb callback); 436 static void ctl_datamove_remote_read(union ctl_io *io); 437 static void ctl_datamove_remote(union ctl_io *io); 438 static int ctl_process_done(union ctl_io *io, int have_lock); 439 static void ctl_work_thread(void *arg); 440 441 /* 442 * Load the serialization table. This isn't very pretty, but is probably 443 * the easiest way to do it. 444 */ 445 #include "ctl_ser_table.c" 446 447 /* 448 * We only need to define open, close and ioctl routines for this driver. 449 */ 450 static struct cdevsw ctl_cdevsw = { 451 .d_version = D_VERSION, 452 .d_flags = 0, 453 .d_open = ctl_open, 454 .d_close = ctl_close, 455 .d_ioctl = ctl_ioctl, 456 .d_name = "ctl", 457 }; 458 459 460 MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 461 462 static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 463 464 static moduledata_t ctl_moduledata = { 465 "ctl", 466 ctl_module_event_handler, 467 NULL 468 }; 469 470 DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 471 MODULE_VERSION(ctl, 1); 472 473 static void 474 ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 475 union ctl_ha_msg *msg_info) 476 { 477 struct ctl_scsiio *ctsio; 478 479 if (msg_info->hdr.original_sc == NULL) { 480 printf("%s: original_sc == NULL!\n", __func__); 481 /* XXX KDM now what? */ 482 return; 483 } 484 485 ctsio = &msg_info->hdr.original_sc->scsiio; 486 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 487 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 488 ctsio->io_hdr.status = msg_info->hdr.status; 489 ctsio->scsi_status = msg_info->scsi.scsi_status; 490 ctsio->sense_len = msg_info->scsi.sense_len; 491 ctsio->sense_residual = msg_info->scsi.sense_residual; 492 ctsio->residual = msg_info->scsi.residual; 493 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 494 sizeof(ctsio->sense_data)); 495 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 496 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 497 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 498 ctl_wakeup_thread(); 499 } 500 501 static void 502 ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 503 union ctl_ha_msg *msg_info) 504 { 505 struct ctl_scsiio *ctsio; 506 507 if (msg_info->hdr.serializing_sc == NULL) { 508 printf("%s: serializing_sc == NULL!\n", __func__); 509 /* XXX KDM now what? */ 510 return; 511 } 512 513 ctsio = &msg_info->hdr.serializing_sc->scsiio; 514 #if 0 515 /* 516 * Attempt to catch the situation where an I/O has 517 * been freed, and we're using it again. 518 */ 519 if (ctsio->io_hdr.io_type == 0xff) { 520 union ctl_io *tmp_io; 521 tmp_io = (union ctl_io *)ctsio; 522 printf("%s: %p use after free!\n", __func__, 523 ctsio); 524 printf("%s: type %d msg %d cdb %x iptl: " 525 "%d:%d:%d:%d tag 0x%04x " 526 "flag %#x status %x\n", 527 __func__, 528 tmp_io->io_hdr.io_type, 529 tmp_io->io_hdr.msg_type, 530 tmp_io->scsiio.cdb[0], 531 tmp_io->io_hdr.nexus.initid.id, 532 tmp_io->io_hdr.nexus.targ_port, 533 tmp_io->io_hdr.nexus.targ_target.id, 534 tmp_io->io_hdr.nexus.targ_lun, 535 (tmp_io->io_hdr.io_type == 536 CTL_IO_TASK) ? 537 tmp_io->taskio.tag_num : 538 tmp_io->scsiio.tag_num, 539 tmp_io->io_hdr.flags, 540 tmp_io->io_hdr.status); 541 } 542 #endif 543 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 544 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 545 ctl_wakeup_thread(); 546 } 547 548 /* 549 * ISC (Inter Shelf Communication) event handler. Events from the HA 550 * subsystem come in here. 551 */ 552 static void 553 ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 554 { 555 struct ctl_softc *ctl_softc; 556 union ctl_io *io; 557 struct ctl_prio *presio; 558 ctl_ha_status isc_status; 559 560 ctl_softc = control_softc; 561 io = NULL; 562 563 564 #if 0 565 printf("CTL: Isc Msg event %d\n", event); 566 #endif 567 if (event == CTL_HA_EVT_MSG_RECV) { 568 union ctl_ha_msg msg_info; 569 570 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 571 sizeof(msg_info), /*wait*/ 0); 572 #if 0 573 printf("CTL: msg_type %d\n", msg_info.msg_type); 574 #endif 575 if (isc_status != 0) { 576 printf("Error receiving message, status = %d\n", 577 isc_status); 578 return; 579 } 580 mtx_lock(&ctl_softc->ctl_lock); 581 582 switch (msg_info.hdr.msg_type) { 583 case CTL_MSG_SERIALIZE: 584 #if 0 585 printf("Serialize\n"); 586 #endif 587 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 588 if (io == NULL) { 589 printf("ctl_isc_event_handler: can't allocate " 590 "ctl_io!\n"); 591 /* Bad Juju */ 592 /* Need to set busy and send msg back */ 593 mtx_unlock(&ctl_softc->ctl_lock); 594 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 595 msg_info.hdr.status = CTL_SCSI_ERROR; 596 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 597 msg_info.scsi.sense_len = 0; 598 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 599 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 600 } 601 goto bailout; 602 } 603 ctl_zero_io(io); 604 // populate ctsio from msg_info 605 io->io_hdr.io_type = CTL_IO_SCSI; 606 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 607 io->io_hdr.original_sc = msg_info.hdr.original_sc; 608 #if 0 609 printf("pOrig %x\n", (int)msg_info.original_sc); 610 #endif 611 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 612 CTL_FLAG_IO_ACTIVE; 613 /* 614 * If we're in serialization-only mode, we don't 615 * want to go through full done processing. Thus 616 * the COPY flag. 617 * 618 * XXX KDM add another flag that is more specific. 619 */ 620 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 621 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 622 io->io_hdr.nexus = msg_info.hdr.nexus; 623 #if 0 624 printf("targ %d, port %d, iid %d, lun %d\n", 625 io->io_hdr.nexus.targ_target.id, 626 io->io_hdr.nexus.targ_port, 627 io->io_hdr.nexus.initid.id, 628 io->io_hdr.nexus.targ_lun); 629 #endif 630 io->scsiio.tag_num = msg_info.scsi.tag_num; 631 io->scsiio.tag_type = msg_info.scsi.tag_type; 632 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 633 CTL_MAX_CDBLEN); 634 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 635 struct ctl_cmd_entry *entry; 636 uint8_t opcode; 637 638 opcode = io->scsiio.cdb[0]; 639 entry = &ctl_cmd_table[opcode]; 640 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 641 io->io_hdr.flags |= 642 entry->flags & CTL_FLAG_DATA_MASK; 643 } 644 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 645 &io->io_hdr, links); 646 ctl_wakeup_thread(); 647 break; 648 649 /* Performed on the Originating SC, XFER mode only */ 650 case CTL_MSG_DATAMOVE: { 651 struct ctl_sg_entry *sgl; 652 int i, j; 653 654 io = msg_info.hdr.original_sc; 655 if (io == NULL) { 656 printf("%s: original_sc == NULL!\n", __func__); 657 /* XXX KDM do something here */ 658 break; 659 } 660 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 661 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 662 /* 663 * Keep track of this, we need to send it back over 664 * when the datamove is complete. 665 */ 666 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 667 668 if (msg_info.dt.sg_sequence == 0) { 669 /* 670 * XXX KDM we use the preallocated S/G list 671 * here, but we'll need to change this to 672 * dynamic allocation if we need larger S/G 673 * lists. 674 */ 675 if (msg_info.dt.kern_sg_entries > 676 sizeof(io->io_hdr.remote_sglist) / 677 sizeof(io->io_hdr.remote_sglist[0])) { 678 printf("%s: number of S/G entries " 679 "needed %u > allocated num %zd\n", 680 __func__, 681 msg_info.dt.kern_sg_entries, 682 sizeof(io->io_hdr.remote_sglist)/ 683 sizeof(io->io_hdr.remote_sglist[0])); 684 685 /* 686 * XXX KDM send a message back to 687 * the other side to shut down the 688 * DMA. The error will come back 689 * through via the normal channel. 690 */ 691 break; 692 } 693 sgl = io->io_hdr.remote_sglist; 694 memset(sgl, 0, 695 sizeof(io->io_hdr.remote_sglist)); 696 697 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 698 699 io->scsiio.kern_sg_entries = 700 msg_info.dt.kern_sg_entries; 701 io->scsiio.rem_sg_entries = 702 msg_info.dt.kern_sg_entries; 703 io->scsiio.kern_data_len = 704 msg_info.dt.kern_data_len; 705 io->scsiio.kern_total_len = 706 msg_info.dt.kern_total_len; 707 io->scsiio.kern_data_resid = 708 msg_info.dt.kern_data_resid; 709 io->scsiio.kern_rel_offset = 710 msg_info.dt.kern_rel_offset; 711 /* 712 * Clear out per-DMA flags. 713 */ 714 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 715 /* 716 * Add per-DMA flags that are set for this 717 * particular DMA request. 718 */ 719 io->io_hdr.flags |= msg_info.dt.flags & 720 CTL_FLAG_RDMA_MASK; 721 } else 722 sgl = (struct ctl_sg_entry *) 723 io->scsiio.kern_data_ptr; 724 725 for (i = msg_info.dt.sent_sg_entries, j = 0; 726 i < (msg_info.dt.sent_sg_entries + 727 msg_info.dt.cur_sg_entries); i++, j++) { 728 sgl[i].addr = msg_info.dt.sg_list[j].addr; 729 sgl[i].len = msg_info.dt.sg_list[j].len; 730 731 #if 0 732 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 733 __func__, 734 msg_info.dt.sg_list[j].addr, 735 msg_info.dt.sg_list[j].len, 736 sgl[i].addr, sgl[i].len, j, i); 737 #endif 738 } 739 #if 0 740 memcpy(&sgl[msg_info.dt.sent_sg_entries], 741 msg_info.dt.sg_list, 742 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 743 #endif 744 745 /* 746 * If this is the last piece of the I/O, we've got 747 * the full S/G list. Queue processing in the thread. 748 * Otherwise wait for the next piece. 749 */ 750 if (msg_info.dt.sg_last != 0) { 751 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 752 &io->io_hdr, links); 753 ctl_wakeup_thread(); 754 } 755 break; 756 } 757 /* Performed on the Serializing (primary) SC, XFER mode only */ 758 case CTL_MSG_DATAMOVE_DONE: { 759 if (msg_info.hdr.serializing_sc == NULL) { 760 printf("%s: serializing_sc == NULL!\n", 761 __func__); 762 /* XXX KDM now what? */ 763 break; 764 } 765 /* 766 * We grab the sense information here in case 767 * there was a failure, so we can return status 768 * back to the initiator. 769 */ 770 io = msg_info.hdr.serializing_sc; 771 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 772 io->io_hdr.status = msg_info.hdr.status; 773 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 774 io->scsiio.sense_len = msg_info.scsi.sense_len; 775 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 776 io->io_hdr.port_status = msg_info.scsi.fetd_status; 777 io->scsiio.residual = msg_info.scsi.residual; 778 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 779 sizeof(io->scsiio.sense_data)); 780 781 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 782 &io->io_hdr, links); 783 ctl_wakeup_thread(); 784 break; 785 } 786 787 /* Preformed on Originating SC, SER_ONLY mode */ 788 case CTL_MSG_R2R: 789 io = msg_info.hdr.original_sc; 790 if (io == NULL) { 791 printf("%s: Major Bummer\n", __func__); 792 mtx_unlock(&ctl_softc->ctl_lock); 793 return; 794 } else { 795 #if 0 796 printf("pOrig %x\n",(int) ctsio); 797 #endif 798 } 799 io->io_hdr.msg_type = CTL_MSG_R2R; 800 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 801 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 802 &io->io_hdr, links); 803 ctl_wakeup_thread(); 804 break; 805 806 /* 807 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 808 * mode. 809 * Performed on the Originating (i.e. secondary) SC in XFER 810 * mode 811 */ 812 case CTL_MSG_FINISH_IO: 813 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 814 ctl_isc_handler_finish_xfer(ctl_softc, 815 &msg_info); 816 else 817 ctl_isc_handler_finish_ser_only(ctl_softc, 818 &msg_info); 819 break; 820 821 /* Preformed on Originating SC */ 822 case CTL_MSG_BAD_JUJU: 823 io = msg_info.hdr.original_sc; 824 if (io == NULL) { 825 printf("%s: Bad JUJU!, original_sc is NULL!\n", 826 __func__); 827 break; 828 } 829 ctl_copy_sense_data(&msg_info, io); 830 /* 831 * IO should have already been cleaned up on other 832 * SC so clear this flag so we won't send a message 833 * back to finish the IO there. 834 */ 835 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 836 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 837 838 /* io = msg_info.hdr.serializing_sc; */ 839 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 840 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 841 &io->io_hdr, links); 842 ctl_wakeup_thread(); 843 break; 844 845 /* Handle resets sent from the other side */ 846 case CTL_MSG_MANAGE_TASKS: { 847 struct ctl_taskio *taskio; 848 taskio = (struct ctl_taskio *)ctl_alloc_io( 849 (void *)ctl_softc->othersc_pool); 850 if (taskio == NULL) { 851 printf("ctl_isc_event_handler: can't allocate " 852 "ctl_io!\n"); 853 /* Bad Juju */ 854 /* should I just call the proper reset func 855 here??? */ 856 mtx_unlock(&ctl_softc->ctl_lock); 857 goto bailout; 858 } 859 ctl_zero_io((union ctl_io *)taskio); 860 taskio->io_hdr.io_type = CTL_IO_TASK; 861 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 862 taskio->io_hdr.nexus = msg_info.hdr.nexus; 863 taskio->task_action = msg_info.task.task_action; 864 taskio->tag_num = msg_info.task.tag_num; 865 taskio->tag_type = msg_info.task.tag_type; 866 #ifdef CTL_TIME_IO 867 taskio->io_hdr.start_time = time_uptime; 868 getbintime(&taskio->io_hdr.start_bt); 869 #if 0 870 cs_prof_gettime(&taskio->io_hdr.start_ticks); 871 #endif 872 #endif /* CTL_TIME_IO */ 873 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 874 &taskio->io_hdr, links); 875 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 876 ctl_wakeup_thread(); 877 break; 878 } 879 /* Persistent Reserve action which needs attention */ 880 case CTL_MSG_PERS_ACTION: 881 presio = (struct ctl_prio *)ctl_alloc_io( 882 (void *)ctl_softc->othersc_pool); 883 if (presio == NULL) { 884 printf("ctl_isc_event_handler: can't allocate " 885 "ctl_io!\n"); 886 /* Bad Juju */ 887 /* Need to set busy and send msg back */ 888 mtx_unlock(&ctl_softc->ctl_lock); 889 goto bailout; 890 } 891 ctl_zero_io((union ctl_io *)presio); 892 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 893 presio->pr_msg = msg_info.pr; 894 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 895 &presio->io_hdr, links); 896 ctl_wakeup_thread(); 897 break; 898 case CTL_MSG_SYNC_FE: 899 rcv_sync_msg = 1; 900 break; 901 case CTL_MSG_APS_LOCK: { 902 // It's quicker to execute this then to 903 // queue it. 904 struct ctl_lun *lun; 905 struct ctl_page_index *page_index; 906 struct copan_aps_subpage *current_sp; 907 908 lun = ctl_softc->ctl_luns[msg_info.hdr.nexus.targ_lun]; 909 page_index = &lun->mode_pages.index[index_to_aps_page]; 910 current_sp = (struct copan_aps_subpage *) 911 (page_index->page_data + 912 (page_index->page_len * CTL_PAGE_CURRENT)); 913 914 current_sp->lock_active = msg_info.aps.lock_flag; 915 break; 916 } 917 default: 918 printf("How did I get here?\n"); 919 } 920 mtx_unlock(&ctl_softc->ctl_lock); 921 } else if (event == CTL_HA_EVT_MSG_SENT) { 922 if (param != CTL_HA_STATUS_SUCCESS) { 923 printf("Bad status from ctl_ha_msg_send status %d\n", 924 param); 925 } 926 return; 927 } else if (event == CTL_HA_EVT_DISCONNECT) { 928 printf("CTL: Got a disconnect from Isc\n"); 929 return; 930 } else { 931 printf("ctl_isc_event_handler: Unknown event %d\n", event); 932 return; 933 } 934 935 bailout: 936 return; 937 } 938 939 static void 940 ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 941 { 942 struct scsi_sense_data *sense; 943 944 sense = &dest->scsiio.sense_data; 945 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 946 dest->scsiio.scsi_status = src->scsi.scsi_status; 947 dest->scsiio.sense_len = src->scsi.sense_len; 948 dest->io_hdr.status = src->hdr.status; 949 } 950 951 static int 952 ctl_init(void) 953 { 954 struct ctl_softc *softc; 955 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 956 struct ctl_frontend *fe; 957 struct ctl_lun *lun; 958 uint8_t sc_id =0; 959 #if 0 960 int i; 961 #endif 962 int error, retval; 963 //int isc_retval; 964 965 retval = 0; 966 ctl_pause_rtr = 0; 967 rcv_sync_msg = 0; 968 969 /* If we're disabled, don't initialize. */ 970 if (ctl_disable != 0) 971 return (0); 972 973 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 974 M_WAITOK | M_ZERO); 975 softc = control_softc; 976 977 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 978 "cam/ctl"); 979 980 softc->dev->si_drv1 = softc; 981 982 /* 983 * By default, return a "bad LUN" peripheral qualifier for unknown 984 * LUNs. The user can override this default using the tunable or 985 * sysctl. See the comment in ctl_inquiry_std() for more details. 986 */ 987 softc->inquiry_pq_no_lun = 1; 988 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 989 &softc->inquiry_pq_no_lun); 990 sysctl_ctx_init(&softc->sysctl_ctx); 991 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 992 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 993 CTLFLAG_RD, 0, "CAM Target Layer"); 994 995 if (softc->sysctl_tree == NULL) { 996 printf("%s: unable to allocate sysctl tree\n", __func__); 997 destroy_dev(softc->dev); 998 free(control_softc, M_DEVBUF); 999 control_softc = NULL; 1000 return (ENOMEM); 1001 } 1002 1003 SYSCTL_ADD_INT(&softc->sysctl_ctx, 1004 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 1005 "inquiry_pq_no_lun", CTLFLAG_RW, 1006 &softc->inquiry_pq_no_lun, 0, 1007 "Report no lun possible for invalid LUNs"); 1008 1009 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 1010 softc->open_count = 0; 1011 1012 /* 1013 * Default to actually sending a SYNCHRONIZE CACHE command down to 1014 * the drive. 1015 */ 1016 softc->flags = CTL_FLAG_REAL_SYNC; 1017 1018 /* 1019 * In Copan's HA scheme, the "master" and "slave" roles are 1020 * figured out through the slot the controller is in. Although it 1021 * is an active/active system, someone has to be in charge. 1022 */ 1023 #ifdef NEEDTOPORT 1024 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1025 #endif 1026 1027 if (sc_id == 0) { 1028 softc->flags |= CTL_FLAG_MASTER_SHELF; 1029 persis_offset = 0; 1030 } else 1031 persis_offset = CTL_MAX_INITIATORS; 1032 1033 /* 1034 * XXX KDM need to figure out where we want to get our target ID 1035 * and WWID. Is it different on each port? 1036 */ 1037 softc->target.id = 0; 1038 softc->target.wwid[0] = 0x12345678; 1039 softc->target.wwid[1] = 0x87654321; 1040 STAILQ_INIT(&softc->lun_list); 1041 STAILQ_INIT(&softc->pending_lun_queue); 1042 STAILQ_INIT(&softc->task_queue); 1043 STAILQ_INIT(&softc->incoming_queue); 1044 STAILQ_INIT(&softc->rtr_queue); 1045 STAILQ_INIT(&softc->done_queue); 1046 STAILQ_INIT(&softc->isc_queue); 1047 STAILQ_INIT(&softc->fe_list); 1048 STAILQ_INIT(&softc->be_list); 1049 STAILQ_INIT(&softc->io_pools); 1050 1051 lun = &softc->lun; 1052 1053 /* 1054 * We don't bother calling these with ctl_lock held here, because, 1055 * in theory, no one else can try to do anything while we're in our 1056 * module init routine. 1057 */ 1058 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1059 &internal_pool)!= 0){ 1060 printf("ctl: can't allocate %d entry internal pool, " 1061 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1062 return (ENOMEM); 1063 } 1064 1065 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1066 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1067 printf("ctl: can't allocate %d entry emergency pool, " 1068 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1069 ctl_pool_free(softc, internal_pool); 1070 return (ENOMEM); 1071 } 1072 1073 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1074 &other_pool) != 0) 1075 { 1076 printf("ctl: can't allocate %d entry other SC pool, " 1077 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1078 ctl_pool_free(softc, internal_pool); 1079 ctl_pool_free(softc, emergency_pool); 1080 return (ENOMEM); 1081 } 1082 1083 softc->internal_pool = internal_pool; 1084 softc->emergency_pool = emergency_pool; 1085 softc->othersc_pool = other_pool; 1086 1087 ctl_pool_acquire(internal_pool); 1088 ctl_pool_acquire(emergency_pool); 1089 ctl_pool_acquire(other_pool); 1090 1091 /* 1092 * We used to allocate a processor LUN here. The new scheme is to 1093 * just let the user allocate LUNs as he sees fit. 1094 */ 1095 #if 0 1096 mtx_lock(&softc->ctl_lock); 1097 ctl_alloc_lun(softc, lun, /*be_lun*/NULL, /*target*/softc->target); 1098 mtx_unlock(&softc->ctl_lock); 1099 #endif 1100 1101 error = kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0, 1102 "ctl_thrd"); 1103 if (error != 0) { 1104 printf("error creating CTL work thread!\n"); 1105 ctl_free_lun(lun); 1106 ctl_pool_free(softc, internal_pool); 1107 ctl_pool_free(softc, emergency_pool); 1108 ctl_pool_free(softc, other_pool); 1109 return (error); 1110 } 1111 printf("ctl: CAM Target Layer loaded\n"); 1112 1113 /* 1114 * Initialize the initiator and portname mappings 1115 */ 1116 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1117 1118 /* 1119 * Initialize the ioctl front end. 1120 */ 1121 fe = &softc->ioctl_info.fe; 1122 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1123 fe->port_type = CTL_PORT_IOCTL; 1124 fe->num_requested_ctl_io = 100; 1125 fe->port_name = softc->ioctl_info.port_name; 1126 fe->port_online = ctl_ioctl_online; 1127 fe->port_offline = ctl_ioctl_offline; 1128 fe->onoff_arg = &softc->ioctl_info; 1129 fe->targ_enable = ctl_ioctl_targ_enable; 1130 fe->targ_disable = ctl_ioctl_targ_disable; 1131 fe->lun_enable = ctl_ioctl_lun_enable; 1132 fe->lun_disable = ctl_ioctl_lun_disable; 1133 fe->targ_lun_arg = &softc->ioctl_info; 1134 fe->fe_datamove = ctl_ioctl_datamove; 1135 fe->fe_done = ctl_ioctl_done; 1136 fe->max_targets = 15; 1137 fe->max_target_id = 15; 1138 1139 if (ctl_frontend_register(&softc->ioctl_info.fe, 1140 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1141 printf("ctl: ioctl front end registration failed, will " 1142 "continue anyway\n"); 1143 } 1144 1145 #ifdef CTL_IO_DELAY 1146 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1147 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1148 sizeof(struct callout), CTL_TIMER_BYTES); 1149 return (EINVAL); 1150 } 1151 #endif /* CTL_IO_DELAY */ 1152 1153 return (0); 1154 } 1155 1156 void 1157 ctl_shutdown(void) 1158 { 1159 struct ctl_softc *softc; 1160 struct ctl_lun *lun, *next_lun; 1161 struct ctl_io_pool *pool, *next_pool; 1162 1163 softc = (struct ctl_softc *)control_softc; 1164 1165 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1166 printf("ctl: ioctl front end deregistration failed\n"); 1167 1168 mtx_lock(&softc->ctl_lock); 1169 1170 /* 1171 * Free up each LUN. 1172 */ 1173 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1174 next_lun = STAILQ_NEXT(lun, links); 1175 ctl_free_lun(lun); 1176 } 1177 1178 /* 1179 * This will rip the rug out from under any FETDs or anyone else 1180 * that has a pool allocated. Since we increment our module 1181 * refcount any time someone outside the main CTL module allocates 1182 * a pool, we shouldn't have any problems here. The user won't be 1183 * able to unload the CTL module until client modules have 1184 * successfully unloaded. 1185 */ 1186 for (pool = STAILQ_FIRST(&softc->io_pools); pool != NULL; 1187 pool = next_pool) { 1188 next_pool = STAILQ_NEXT(pool, links); 1189 ctl_pool_free(softc, pool); 1190 } 1191 1192 mtx_unlock(&softc->ctl_lock); 1193 1194 #if 0 1195 ctl_shutdown_thread(softc->work_thread); 1196 #endif 1197 1198 mtx_destroy(&softc->ctl_lock); 1199 1200 destroy_dev(softc->dev); 1201 1202 sysctl_ctx_free(&softc->sysctl_ctx); 1203 1204 free(control_softc, M_DEVBUF); 1205 control_softc = NULL; 1206 1207 printf("ctl: CAM Target Layer unloaded\n"); 1208 } 1209 1210 static int 1211 ctl_module_event_handler(module_t mod, int what, void *arg) 1212 { 1213 1214 switch (what) { 1215 case MOD_LOAD: 1216 return (ctl_init()); 1217 case MOD_UNLOAD: 1218 return (EBUSY); 1219 default: 1220 return (EOPNOTSUPP); 1221 } 1222 } 1223 1224 /* 1225 * XXX KDM should we do some access checks here? Bump a reference count to 1226 * prevent a CTL module from being unloaded while someone has it open? 1227 */ 1228 static int 1229 ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1230 { 1231 return (0); 1232 } 1233 1234 static int 1235 ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1236 { 1237 return (0); 1238 } 1239 1240 int 1241 ctl_port_enable(ctl_port_type port_type) 1242 { 1243 struct ctl_softc *softc; 1244 struct ctl_frontend *fe; 1245 1246 if (ctl_is_single == 0) { 1247 union ctl_ha_msg msg_info; 1248 int isc_retval; 1249 1250 #if 0 1251 printf("%s: HA mode, synchronizing frontend enable\n", 1252 __func__); 1253 #endif 1254 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1255 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1256 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1257 printf("Sync msg send error retval %d\n", isc_retval); 1258 } 1259 if (!rcv_sync_msg) { 1260 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1261 sizeof(msg_info), 1); 1262 } 1263 #if 0 1264 printf("CTL:Frontend Enable\n"); 1265 } else { 1266 printf("%s: single mode, skipping frontend synchronization\n", 1267 __func__); 1268 #endif 1269 } 1270 1271 softc = control_softc; 1272 1273 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1274 if (port_type & fe->port_type) 1275 { 1276 #if 0 1277 printf("port %d\n", fe->targ_port); 1278 #endif 1279 ctl_frontend_online(fe); 1280 } 1281 } 1282 1283 return (0); 1284 } 1285 1286 int 1287 ctl_port_disable(ctl_port_type port_type) 1288 { 1289 struct ctl_softc *softc; 1290 struct ctl_frontend *fe; 1291 1292 softc = control_softc; 1293 1294 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1295 if (port_type & fe->port_type) 1296 ctl_frontend_offline(fe); 1297 } 1298 1299 return (0); 1300 } 1301 1302 /* 1303 * Returns 0 for success, 1 for failure. 1304 * Currently the only failure mode is if there aren't enough entries 1305 * allocated. So, in case of a failure, look at num_entries_dropped, 1306 * reallocate and try again. 1307 */ 1308 int 1309 ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1310 int *num_entries_filled, int *num_entries_dropped, 1311 ctl_port_type port_type, int no_virtual) 1312 { 1313 struct ctl_softc *softc; 1314 struct ctl_frontend *fe; 1315 int entries_dropped, entries_filled; 1316 int retval; 1317 int i; 1318 1319 softc = control_softc; 1320 1321 retval = 0; 1322 entries_filled = 0; 1323 entries_dropped = 0; 1324 1325 i = 0; 1326 mtx_lock(&softc->ctl_lock); 1327 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1328 struct ctl_port_entry *entry; 1329 1330 if ((fe->port_type & port_type) == 0) 1331 continue; 1332 1333 if ((no_virtual != 0) 1334 && (fe->virtual_port != 0)) 1335 continue; 1336 1337 if (entries_filled >= num_entries_alloced) { 1338 entries_dropped++; 1339 continue; 1340 } 1341 entry = &entries[i]; 1342 1343 entry->port_type = fe->port_type; 1344 strlcpy(entry->port_name, fe->port_name, 1345 sizeof(entry->port_name)); 1346 entry->physical_port = fe->physical_port; 1347 entry->virtual_port = fe->virtual_port; 1348 entry->wwnn = fe->wwnn; 1349 entry->wwpn = fe->wwpn; 1350 1351 i++; 1352 entries_filled++; 1353 } 1354 1355 mtx_unlock(&softc->ctl_lock); 1356 1357 if (entries_dropped > 0) 1358 retval = 1; 1359 1360 *num_entries_dropped = entries_dropped; 1361 *num_entries_filled = entries_filled; 1362 1363 return (retval); 1364 } 1365 1366 static void 1367 ctl_ioctl_online(void *arg) 1368 { 1369 struct ctl_ioctl_info *ioctl_info; 1370 1371 ioctl_info = (struct ctl_ioctl_info *)arg; 1372 1373 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1374 } 1375 1376 static void 1377 ctl_ioctl_offline(void *arg) 1378 { 1379 struct ctl_ioctl_info *ioctl_info; 1380 1381 ioctl_info = (struct ctl_ioctl_info *)arg; 1382 1383 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1384 } 1385 1386 /* 1387 * Remove an initiator by port number and initiator ID. 1388 * Returns 0 for success, 1 for failure. 1389 * Assumes the caller does NOT hold the CTL lock. 1390 */ 1391 int 1392 ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1393 { 1394 struct ctl_softc *softc; 1395 1396 softc = control_softc; 1397 1398 if ((targ_port < 0) 1399 || (targ_port > CTL_MAX_PORTS)) { 1400 printf("%s: invalid port number %d\n", __func__, targ_port); 1401 return (1); 1402 } 1403 if (iid > CTL_MAX_INIT_PER_PORT) { 1404 printf("%s: initiator ID %u > maximun %u!\n", 1405 __func__, iid, CTL_MAX_INIT_PER_PORT); 1406 return (1); 1407 } 1408 1409 mtx_lock(&softc->ctl_lock); 1410 1411 softc->wwpn_iid[targ_port][iid].in_use = 0; 1412 1413 mtx_unlock(&softc->ctl_lock); 1414 1415 return (0); 1416 } 1417 1418 /* 1419 * Add an initiator to the initiator map. 1420 * Returns 0 for success, 1 for failure. 1421 * Assumes the caller does NOT hold the CTL lock. 1422 */ 1423 int 1424 ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1425 { 1426 struct ctl_softc *softc; 1427 int retval; 1428 1429 softc = control_softc; 1430 1431 retval = 0; 1432 1433 if ((targ_port < 0) 1434 || (targ_port > CTL_MAX_PORTS)) { 1435 printf("%s: invalid port number %d\n", __func__, targ_port); 1436 return (1); 1437 } 1438 if (iid > CTL_MAX_INIT_PER_PORT) { 1439 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1440 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1441 return (1); 1442 } 1443 1444 mtx_lock(&softc->ctl_lock); 1445 1446 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1447 /* 1448 * We don't treat this as an error. 1449 */ 1450 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1451 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1452 __func__, targ_port, iid, (uintmax_t)wwpn); 1453 goto bailout; 1454 } 1455 1456 /* 1457 * This is an error, but what do we do about it? The 1458 * driver is telling us we have a new WWPN for this 1459 * initiator ID, so we pretty much need to use it. 1460 */ 1461 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1462 "still at that address\n", __func__, targ_port, iid, 1463 (uintmax_t)wwpn, 1464 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1465 1466 /* 1467 * XXX KDM clear have_ca and ua_pending on each LUN for 1468 * this initiator. 1469 */ 1470 } 1471 softc->wwpn_iid[targ_port][iid].in_use = 1; 1472 softc->wwpn_iid[targ_port][iid].iid = iid; 1473 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1474 softc->wwpn_iid[targ_port][iid].port = targ_port; 1475 1476 bailout: 1477 1478 mtx_unlock(&softc->ctl_lock); 1479 1480 return (retval); 1481 } 1482 1483 /* 1484 * XXX KDM should we pretend to do something in the target/lun 1485 * enable/disable functions? 1486 */ 1487 static int 1488 ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1489 { 1490 return (0); 1491 } 1492 1493 static int 1494 ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1495 { 1496 return (0); 1497 } 1498 1499 static int 1500 ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1501 { 1502 return (0); 1503 } 1504 1505 static int 1506 ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1507 { 1508 return (0); 1509 } 1510 1511 /* 1512 * Data movement routine for the CTL ioctl frontend port. 1513 */ 1514 static int 1515 ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1516 { 1517 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1518 struct ctl_sg_entry ext_entry, kern_entry; 1519 int ext_sglen, ext_sg_entries, kern_sg_entries; 1520 int ext_sg_start, ext_offset; 1521 int len_to_copy, len_copied; 1522 int kern_watermark, ext_watermark; 1523 int ext_sglist_malloced; 1524 int i, j; 1525 1526 ext_sglist_malloced = 0; 1527 ext_sg_start = 0; 1528 ext_offset = 0; 1529 1530 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1531 1532 /* 1533 * If this flag is set, fake the data transfer. 1534 */ 1535 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1536 ctsio->ext_data_filled = ctsio->ext_data_len; 1537 goto bailout; 1538 } 1539 1540 /* 1541 * To simplify things here, if we have a single buffer, stick it in 1542 * a S/G entry and just make it a single entry S/G list. 1543 */ 1544 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1545 int len_seen; 1546 1547 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1548 1549 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1550 M_WAITOK); 1551 ext_sglist_malloced = 1; 1552 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1553 ext_sglen) != 0) { 1554 ctl_set_internal_failure(ctsio, 1555 /*sks_valid*/ 0, 1556 /*retry_count*/ 0); 1557 goto bailout; 1558 } 1559 ext_sg_entries = ctsio->ext_sg_entries; 1560 len_seen = 0; 1561 for (i = 0; i < ext_sg_entries; i++) { 1562 if ((len_seen + ext_sglist[i].len) >= 1563 ctsio->ext_data_filled) { 1564 ext_sg_start = i; 1565 ext_offset = ctsio->ext_data_filled - len_seen; 1566 break; 1567 } 1568 len_seen += ext_sglist[i].len; 1569 } 1570 } else { 1571 ext_sglist = &ext_entry; 1572 ext_sglist->addr = ctsio->ext_data_ptr; 1573 ext_sglist->len = ctsio->ext_data_len; 1574 ext_sg_entries = 1; 1575 ext_sg_start = 0; 1576 ext_offset = ctsio->ext_data_filled; 1577 } 1578 1579 if (ctsio->kern_sg_entries > 0) { 1580 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1581 kern_sg_entries = ctsio->kern_sg_entries; 1582 } else { 1583 kern_sglist = &kern_entry; 1584 kern_sglist->addr = ctsio->kern_data_ptr; 1585 kern_sglist->len = ctsio->kern_data_len; 1586 kern_sg_entries = 1; 1587 } 1588 1589 1590 kern_watermark = 0; 1591 ext_watermark = ext_offset; 1592 len_copied = 0; 1593 for (i = ext_sg_start, j = 0; 1594 i < ext_sg_entries && j < kern_sg_entries;) { 1595 uint8_t *ext_ptr, *kern_ptr; 1596 1597 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1598 kern_sglist[j].len - kern_watermark); 1599 1600 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1601 ext_ptr = ext_ptr + ext_watermark; 1602 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1603 /* 1604 * XXX KDM fix this! 1605 */ 1606 panic("need to implement bus address support"); 1607 #if 0 1608 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1609 #endif 1610 } else 1611 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1612 kern_ptr = kern_ptr + kern_watermark; 1613 1614 kern_watermark += len_to_copy; 1615 ext_watermark += len_to_copy; 1616 1617 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1618 CTL_FLAG_DATA_IN) { 1619 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1620 "bytes to user\n", len_to_copy)); 1621 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1622 "to %p\n", kern_ptr, ext_ptr)); 1623 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1624 ctl_set_internal_failure(ctsio, 1625 /*sks_valid*/ 0, 1626 /*retry_count*/ 0); 1627 goto bailout; 1628 } 1629 } else { 1630 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1631 "bytes from user\n", len_to_copy)); 1632 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1633 "to %p\n", ext_ptr, kern_ptr)); 1634 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1635 ctl_set_internal_failure(ctsio, 1636 /*sks_valid*/ 0, 1637 /*retry_count*/0); 1638 goto bailout; 1639 } 1640 } 1641 1642 len_copied += len_to_copy; 1643 1644 if (ext_sglist[i].len == ext_watermark) { 1645 i++; 1646 ext_watermark = 0; 1647 } 1648 1649 if (kern_sglist[j].len == kern_watermark) { 1650 j++; 1651 kern_watermark = 0; 1652 } 1653 } 1654 1655 ctsio->ext_data_filled += len_copied; 1656 1657 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1658 "kern_sg_entries: %d\n", ext_sg_entries, 1659 kern_sg_entries)); 1660 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1661 "kern_data_len = %d\n", ctsio->ext_data_len, 1662 ctsio->kern_data_len)); 1663 1664 1665 /* XXX KDM set residual?? */ 1666 bailout: 1667 1668 if (ext_sglist_malloced != 0) 1669 free(ext_sglist, M_CTL); 1670 1671 return (CTL_RETVAL_COMPLETE); 1672 } 1673 1674 /* 1675 * Serialize a command that went down the "wrong" side, and so was sent to 1676 * this controller for execution. The logic is a little different than the 1677 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1678 * sent back to the other side, but in the success case, we execute the 1679 * command on this side (XFER mode) or tell the other side to execute it 1680 * (SER_ONLY mode). 1681 */ 1682 static int 1683 ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1684 { 1685 struct ctl_softc *ctl_softc; 1686 union ctl_ha_msg msg_info; 1687 struct ctl_lun *lun; 1688 int retval = 0; 1689 1690 ctl_softc = control_softc; 1691 if (have_lock == 0) 1692 mtx_lock(&ctl_softc->ctl_lock); 1693 1694 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 1695 if (lun==NULL) 1696 { 1697 /* 1698 * Why isn't LUN defined? The other side wouldn't 1699 * send a cmd if the LUN is undefined. 1700 */ 1701 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1702 1703 /* "Logical unit not supported" */ 1704 ctl_set_sense_data(&msg_info.scsi.sense_data, 1705 lun, 1706 /*sense_format*/SSD_TYPE_NONE, 1707 /*current_error*/ 1, 1708 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1709 /*asc*/ 0x25, 1710 /*ascq*/ 0x00, 1711 SSD_ELEM_NONE); 1712 1713 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1714 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1715 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1716 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1717 msg_info.hdr.serializing_sc = NULL; 1718 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1719 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1720 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1721 } 1722 if (have_lock == 0) 1723 mtx_unlock(&ctl_softc->ctl_lock); 1724 return(1); 1725 1726 } 1727 1728 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1729 1730 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1731 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1732 ooa_links))) { 1733 case CTL_ACTION_BLOCK: 1734 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1735 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1736 blocked_links); 1737 break; 1738 case CTL_ACTION_PASS: 1739 case CTL_ACTION_SKIP: 1740 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1741 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1742 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1743 &ctsio->io_hdr, links); 1744 } else { 1745 1746 /* send msg back to other side */ 1747 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1748 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1749 msg_info.hdr.msg_type = CTL_MSG_R2R; 1750 #if 0 1751 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1752 #endif 1753 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1754 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1755 } 1756 } 1757 break; 1758 case CTL_ACTION_OVERLAP: 1759 /* OVERLAPPED COMMANDS ATTEMPTED */ 1760 ctl_set_sense_data(&msg_info.scsi.sense_data, 1761 lun, 1762 /*sense_format*/SSD_TYPE_NONE, 1763 /*current_error*/ 1, 1764 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1765 /*asc*/ 0x4E, 1766 /*ascq*/ 0x00, 1767 SSD_ELEM_NONE); 1768 1769 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1770 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1771 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1772 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1773 msg_info.hdr.serializing_sc = NULL; 1774 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1775 #if 0 1776 printf("BAD JUJU:Major Bummer Overlap\n"); 1777 #endif 1778 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1779 retval = 1; 1780 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1781 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1782 } 1783 break; 1784 case CTL_ACTION_OVERLAP_TAG: 1785 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1786 ctl_set_sense_data(&msg_info.scsi.sense_data, 1787 lun, 1788 /*sense_format*/SSD_TYPE_NONE, 1789 /*current_error*/ 1, 1790 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1791 /*asc*/ 0x4D, 1792 /*ascq*/ ctsio->tag_num & 0xff, 1793 SSD_ELEM_NONE); 1794 1795 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1796 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1797 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1798 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1799 msg_info.hdr.serializing_sc = NULL; 1800 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1801 #if 0 1802 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1803 #endif 1804 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1805 retval = 1; 1806 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1807 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1808 } 1809 break; 1810 case CTL_ACTION_ERROR: 1811 default: 1812 /* "Internal target failure" */ 1813 ctl_set_sense_data(&msg_info.scsi.sense_data, 1814 lun, 1815 /*sense_format*/SSD_TYPE_NONE, 1816 /*current_error*/ 1, 1817 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1818 /*asc*/ 0x44, 1819 /*ascq*/ 0x00, 1820 SSD_ELEM_NONE); 1821 1822 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1823 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1824 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1825 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1826 msg_info.hdr.serializing_sc = NULL; 1827 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1828 #if 0 1829 printf("BAD JUJU:Major Bummer HW Error\n"); 1830 #endif 1831 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1832 retval = 1; 1833 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1834 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1835 } 1836 break; 1837 } 1838 if (have_lock == 0) 1839 mtx_unlock(&ctl_softc->ctl_lock); 1840 return (retval); 1841 } 1842 1843 static int 1844 ctl_ioctl_submit_wait(union ctl_io *io) 1845 { 1846 struct ctl_fe_ioctl_params params; 1847 ctl_fe_ioctl_state last_state; 1848 int done, retval; 1849 1850 retval = 0; 1851 1852 bzero(¶ms, sizeof(params)); 1853 1854 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1855 cv_init(¶ms.sem, "ctlioccv"); 1856 params.state = CTL_IOCTL_INPROG; 1857 last_state = params.state; 1858 1859 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1860 1861 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1862 1863 /* This shouldn't happen */ 1864 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1865 return (retval); 1866 1867 done = 0; 1868 1869 do { 1870 mtx_lock(¶ms.ioctl_mtx); 1871 /* 1872 * Check the state here, and don't sleep if the state has 1873 * already changed (i.e. wakeup has already occured, but we 1874 * weren't waiting yet). 1875 */ 1876 if (params.state == last_state) { 1877 /* XXX KDM cv_wait_sig instead? */ 1878 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1879 } 1880 last_state = params.state; 1881 1882 switch (params.state) { 1883 case CTL_IOCTL_INPROG: 1884 /* Why did we wake up? */ 1885 /* XXX KDM error here? */ 1886 mtx_unlock(¶ms.ioctl_mtx); 1887 break; 1888 case CTL_IOCTL_DATAMOVE: 1889 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1890 1891 /* 1892 * change last_state back to INPROG to avoid 1893 * deadlock on subsequent data moves. 1894 */ 1895 params.state = last_state = CTL_IOCTL_INPROG; 1896 1897 mtx_unlock(¶ms.ioctl_mtx); 1898 ctl_ioctl_do_datamove(&io->scsiio); 1899 /* 1900 * Note that in some cases, most notably writes, 1901 * this will queue the I/O and call us back later. 1902 * In other cases, generally reads, this routine 1903 * will immediately call back and wake us up, 1904 * probably using our own context. 1905 */ 1906 io->scsiio.be_move_done(io); 1907 break; 1908 case CTL_IOCTL_DONE: 1909 mtx_unlock(¶ms.ioctl_mtx); 1910 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1911 done = 1; 1912 break; 1913 default: 1914 mtx_unlock(¶ms.ioctl_mtx); 1915 /* XXX KDM error here? */ 1916 break; 1917 } 1918 } while (done == 0); 1919 1920 mtx_destroy(¶ms.ioctl_mtx); 1921 cv_destroy(¶ms.sem); 1922 1923 return (CTL_RETVAL_COMPLETE); 1924 } 1925 1926 static void 1927 ctl_ioctl_datamove(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_DATAMOVE; 1936 cv_broadcast(¶ms->sem); 1937 mtx_unlock(¶ms->ioctl_mtx); 1938 } 1939 1940 static void 1941 ctl_ioctl_done(union ctl_io *io) 1942 { 1943 struct ctl_fe_ioctl_params *params; 1944 1945 params = (struct ctl_fe_ioctl_params *) 1946 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1947 1948 mtx_lock(¶ms->ioctl_mtx); 1949 params->state = CTL_IOCTL_DONE; 1950 cv_broadcast(¶ms->sem); 1951 mtx_unlock(¶ms->ioctl_mtx); 1952 } 1953 1954 static void 1955 ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1956 { 1957 struct ctl_fe_ioctl_startstop_info *sd_info; 1958 1959 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1960 1961 sd_info->hs_info.status = metatask->status; 1962 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1963 sd_info->hs_info.luns_complete = 1964 metatask->taskinfo.startstop.luns_complete; 1965 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1966 1967 cv_broadcast(&sd_info->sem); 1968 } 1969 1970 static void 1971 ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1972 { 1973 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1974 1975 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1976 1977 mtx_lock(fe_bbr_info->lock); 1978 fe_bbr_info->bbr_info->status = metatask->status; 1979 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1980 fe_bbr_info->wakeup_done = 1; 1981 mtx_unlock(fe_bbr_info->lock); 1982 1983 cv_broadcast(&fe_bbr_info->sem); 1984 } 1985 1986 /* 1987 * Must be called with the ctl_lock held. 1988 * Returns 0 for success, errno for failure. 1989 */ 1990 static int 1991 ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1992 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1993 { 1994 union ctl_io *io; 1995 int retval; 1996 1997 retval = 0; 1998 1999 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 2000 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2001 ooa_links)) { 2002 struct ctl_ooa_entry *entry; 2003 2004 /* 2005 * If we've got more than we can fit, just count the 2006 * remaining entries. 2007 */ 2008 if (*cur_fill_num >= ooa_hdr->alloc_num) 2009 continue; 2010 2011 entry = &kern_entries[*cur_fill_num]; 2012 2013 entry->tag_num = io->scsiio.tag_num; 2014 entry->lun_num = lun->lun; 2015 #ifdef CTL_TIME_IO 2016 entry->start_bt = io->io_hdr.start_bt; 2017 #endif 2018 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 2019 entry->cdb_len = io->scsiio.cdb_len; 2020 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2021 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2022 2023 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2024 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 2025 2026 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2027 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2028 2029 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2030 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 2031 2032 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2033 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2034 } 2035 2036 return (retval); 2037 } 2038 2039 static void * 2040 ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2041 size_t error_str_len) 2042 { 2043 void *kptr; 2044 2045 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2046 2047 if (copyin(user_addr, kptr, len) != 0) { 2048 snprintf(error_str, error_str_len, "Error copying %d bytes " 2049 "from user address %p to kernel address %p", len, 2050 user_addr, kptr); 2051 free(kptr, M_CTL); 2052 return (NULL); 2053 } 2054 2055 return (kptr); 2056 } 2057 2058 static void 2059 ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2060 { 2061 int i; 2062 2063 if (be_args == NULL) 2064 return; 2065 2066 for (i = 0; i < num_be_args; i++) { 2067 free(be_args[i].kname, M_CTL); 2068 free(be_args[i].kvalue, M_CTL); 2069 } 2070 2071 free(be_args, M_CTL); 2072 } 2073 2074 static struct ctl_be_arg * 2075 ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2076 char *error_str, size_t error_str_len) 2077 { 2078 struct ctl_be_arg *args; 2079 int i; 2080 2081 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2082 error_str, error_str_len); 2083 2084 if (args == NULL) 2085 goto bailout; 2086 2087 for (i = 0; i < num_be_args; i++) { 2088 args[i].kname = NULL; 2089 args[i].kvalue = NULL; 2090 } 2091 2092 for (i = 0; i < num_be_args; i++) { 2093 uint8_t *tmpptr; 2094 2095 args[i].kname = ctl_copyin_alloc(args[i].name, 2096 args[i].namelen, error_str, error_str_len); 2097 if (args[i].kname == NULL) 2098 goto bailout; 2099 2100 if (args[i].kname[args[i].namelen - 1] != '\0') { 2101 snprintf(error_str, error_str_len, "Argument %d " 2102 "name is not NUL-terminated", i); 2103 goto bailout; 2104 } 2105 2106 args[i].kvalue = NULL; 2107 2108 tmpptr = ctl_copyin_alloc(args[i].value, 2109 args[i].vallen, error_str, error_str_len); 2110 if (tmpptr == NULL) 2111 goto bailout; 2112 2113 args[i].kvalue = tmpptr; 2114 2115 if ((args[i].flags & CTL_BEARG_ASCII) 2116 && (tmpptr[args[i].vallen - 1] != '\0')) { 2117 snprintf(error_str, error_str_len, "Argument %d " 2118 "value is not NUL-terminated", i); 2119 goto bailout; 2120 } 2121 } 2122 2123 return (args); 2124 bailout: 2125 2126 ctl_free_args(num_be_args, args); 2127 2128 return (NULL); 2129 } 2130 2131 /* 2132 * Escape characters that are illegal or not recommended in XML. 2133 */ 2134 int 2135 ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2136 { 2137 int retval; 2138 2139 retval = 0; 2140 2141 for (; *str; str++) { 2142 switch (*str) { 2143 case '&': 2144 retval = sbuf_printf(sb, "&"); 2145 break; 2146 case '>': 2147 retval = sbuf_printf(sb, ">"); 2148 break; 2149 case '<': 2150 retval = sbuf_printf(sb, "<"); 2151 break; 2152 default: 2153 retval = sbuf_putc(sb, *str); 2154 break; 2155 } 2156 2157 if (retval != 0) 2158 break; 2159 2160 } 2161 2162 return (retval); 2163 } 2164 2165 static int 2166 ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2167 struct thread *td) 2168 { 2169 struct ctl_softc *softc; 2170 int retval; 2171 2172 softc = control_softc; 2173 2174 retval = 0; 2175 2176 switch (cmd) { 2177 case CTL_IO: { 2178 union ctl_io *io; 2179 void *pool_tmp; 2180 2181 /* 2182 * If we haven't been "enabled", don't allow any SCSI I/O 2183 * to this FETD. 2184 */ 2185 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2186 retval = -EPERM; 2187 break; 2188 } 2189 2190 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2191 if (io == NULL) { 2192 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2193 retval = -ENOSPC; 2194 break; 2195 } 2196 2197 /* 2198 * Need to save the pool reference so it doesn't get 2199 * spammed by the user's ctl_io. 2200 */ 2201 pool_tmp = io->io_hdr.pool; 2202 2203 memcpy(io, (void *)addr, sizeof(*io)); 2204 2205 io->io_hdr.pool = pool_tmp; 2206 /* 2207 * No status yet, so make sure the status is set properly. 2208 */ 2209 io->io_hdr.status = CTL_STATUS_NONE; 2210 2211 /* 2212 * The user sets the initiator ID, target and LUN IDs. 2213 */ 2214 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2215 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2216 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2217 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2218 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2219 2220 retval = ctl_ioctl_submit_wait(io); 2221 2222 if (retval != 0) { 2223 ctl_free_io(io); 2224 break; 2225 } 2226 2227 memcpy((void *)addr, io, sizeof(*io)); 2228 2229 /* return this to our pool */ 2230 ctl_free_io(io); 2231 2232 break; 2233 } 2234 case CTL_ENABLE_PORT: 2235 case CTL_DISABLE_PORT: 2236 case CTL_SET_PORT_WWNS: { 2237 struct ctl_frontend *fe; 2238 struct ctl_port_entry *entry; 2239 2240 entry = (struct ctl_port_entry *)addr; 2241 2242 mtx_lock(&softc->ctl_lock); 2243 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2244 int action, done; 2245 2246 action = 0; 2247 done = 0; 2248 2249 if ((entry->port_type == CTL_PORT_NONE) 2250 && (entry->targ_port == fe->targ_port)) { 2251 /* 2252 * If the user only wants to enable or 2253 * disable or set WWNs on a specific port, 2254 * do the operation and we're done. 2255 */ 2256 action = 1; 2257 done = 1; 2258 } else if (entry->port_type & fe->port_type) { 2259 /* 2260 * Compare the user's type mask with the 2261 * particular frontend type to see if we 2262 * have a match. 2263 */ 2264 action = 1; 2265 done = 0; 2266 2267 /* 2268 * Make sure the user isn't trying to set 2269 * WWNs on multiple ports at the same time. 2270 */ 2271 if (cmd == CTL_SET_PORT_WWNS) { 2272 printf("%s: Can't set WWNs on " 2273 "multiple ports\n", __func__); 2274 retval = EINVAL; 2275 break; 2276 } 2277 } 2278 if (action != 0) { 2279 /* 2280 * XXX KDM we have to drop the lock here, 2281 * because the online/offline operations 2282 * can potentially block. We need to 2283 * reference count the frontends so they 2284 * can't go away, 2285 */ 2286 mtx_unlock(&softc->ctl_lock); 2287 2288 if (cmd == CTL_ENABLE_PORT) { 2289 struct ctl_lun *lun; 2290 2291 STAILQ_FOREACH(lun, &softc->lun_list, 2292 links) { 2293 fe->lun_enable(fe->targ_lun_arg, 2294 lun->target, 2295 lun->lun); 2296 } 2297 2298 ctl_frontend_online(fe); 2299 } else if (cmd == CTL_DISABLE_PORT) { 2300 struct ctl_lun *lun; 2301 2302 ctl_frontend_offline(fe); 2303 2304 STAILQ_FOREACH(lun, &softc->lun_list, 2305 links) { 2306 fe->lun_disable( 2307 fe->targ_lun_arg, 2308 lun->target, 2309 lun->lun); 2310 } 2311 } 2312 2313 mtx_lock(&softc->ctl_lock); 2314 2315 if (cmd == CTL_SET_PORT_WWNS) 2316 ctl_frontend_set_wwns(fe, 2317 (entry->flags & CTL_PORT_WWNN_VALID) ? 2318 1 : 0, entry->wwnn, 2319 (entry->flags & CTL_PORT_WWPN_VALID) ? 2320 1 : 0, entry->wwpn); 2321 } 2322 if (done != 0) 2323 break; 2324 } 2325 mtx_unlock(&softc->ctl_lock); 2326 break; 2327 } 2328 case CTL_GET_PORT_LIST: { 2329 struct ctl_frontend *fe; 2330 struct ctl_port_list *list; 2331 int i; 2332 2333 list = (struct ctl_port_list *)addr; 2334 2335 if (list->alloc_len != (list->alloc_num * 2336 sizeof(struct ctl_port_entry))) { 2337 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2338 "alloc_num %u * sizeof(struct ctl_port_entry) " 2339 "%zu\n", __func__, list->alloc_len, 2340 list->alloc_num, sizeof(struct ctl_port_entry)); 2341 retval = EINVAL; 2342 break; 2343 } 2344 list->fill_len = 0; 2345 list->fill_num = 0; 2346 list->dropped_num = 0; 2347 i = 0; 2348 mtx_lock(&softc->ctl_lock); 2349 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2350 struct ctl_port_entry entry, *list_entry; 2351 2352 if (list->fill_num >= list->alloc_num) { 2353 list->dropped_num++; 2354 continue; 2355 } 2356 2357 entry.port_type = fe->port_type; 2358 strlcpy(entry.port_name, fe->port_name, 2359 sizeof(entry.port_name)); 2360 entry.targ_port = fe->targ_port; 2361 entry.physical_port = fe->physical_port; 2362 entry.virtual_port = fe->virtual_port; 2363 entry.wwnn = fe->wwnn; 2364 entry.wwpn = fe->wwpn; 2365 if (fe->status & CTL_PORT_STATUS_ONLINE) 2366 entry.online = 1; 2367 else 2368 entry.online = 0; 2369 2370 list_entry = &list->entries[i]; 2371 2372 retval = copyout(&entry, list_entry, sizeof(entry)); 2373 if (retval != 0) { 2374 printf("%s: CTL_GET_PORT_LIST: copyout " 2375 "returned %d\n", __func__, retval); 2376 break; 2377 } 2378 i++; 2379 list->fill_num++; 2380 list->fill_len += sizeof(entry); 2381 } 2382 mtx_unlock(&softc->ctl_lock); 2383 2384 /* 2385 * If this is non-zero, we had a copyout fault, so there's 2386 * probably no point in attempting to set the status inside 2387 * the structure. 2388 */ 2389 if (retval != 0) 2390 break; 2391 2392 if (list->dropped_num > 0) 2393 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2394 else 2395 list->status = CTL_PORT_LIST_OK; 2396 break; 2397 } 2398 case CTL_DUMP_OOA: { 2399 struct ctl_lun *lun; 2400 union ctl_io *io; 2401 char printbuf[128]; 2402 struct sbuf sb; 2403 2404 mtx_lock(&softc->ctl_lock); 2405 printf("Dumping OOA queues:\n"); 2406 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2407 for (io = (union ctl_io *)TAILQ_FIRST( 2408 &lun->ooa_queue); io != NULL; 2409 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2410 ooa_links)) { 2411 sbuf_new(&sb, printbuf, sizeof(printbuf), 2412 SBUF_FIXEDLEN); 2413 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2414 (intmax_t)lun->lun, 2415 io->scsiio.tag_num, 2416 (io->io_hdr.flags & 2417 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2418 (io->io_hdr.flags & 2419 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2420 (io->io_hdr.flags & 2421 CTL_FLAG_ABORT) ? " ABORT" : "", 2422 (io->io_hdr.flags & 2423 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2424 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2425 sbuf_finish(&sb); 2426 printf("%s\n", sbuf_data(&sb)); 2427 } 2428 } 2429 printf("OOA queues dump done\n"); 2430 mtx_unlock(&softc->ctl_lock); 2431 break; 2432 } 2433 case CTL_GET_OOA: { 2434 struct ctl_lun *lun; 2435 struct ctl_ooa *ooa_hdr; 2436 struct ctl_ooa_entry *entries; 2437 uint32_t cur_fill_num; 2438 2439 ooa_hdr = (struct ctl_ooa *)addr; 2440 2441 if ((ooa_hdr->alloc_len == 0) 2442 || (ooa_hdr->alloc_num == 0)) { 2443 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2444 "must be non-zero\n", __func__, 2445 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2446 retval = EINVAL; 2447 break; 2448 } 2449 2450 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2451 sizeof(struct ctl_ooa_entry))) { 2452 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2453 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2454 __func__, ooa_hdr->alloc_len, 2455 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2456 retval = EINVAL; 2457 break; 2458 } 2459 2460 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2461 if (entries == NULL) { 2462 printf("%s: could not allocate %d bytes for OOA " 2463 "dump\n", __func__, ooa_hdr->alloc_len); 2464 retval = ENOMEM; 2465 break; 2466 } 2467 2468 mtx_lock(&softc->ctl_lock); 2469 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2470 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2471 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2472 mtx_unlock(&softc->ctl_lock); 2473 free(entries, M_CTL); 2474 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2475 __func__, (uintmax_t)ooa_hdr->lun_num); 2476 retval = EINVAL; 2477 break; 2478 } 2479 2480 cur_fill_num = 0; 2481 2482 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2483 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2484 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2485 ooa_hdr, entries); 2486 if (retval != 0) 2487 break; 2488 } 2489 if (retval != 0) { 2490 mtx_unlock(&softc->ctl_lock); 2491 free(entries, M_CTL); 2492 break; 2493 } 2494 } else { 2495 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2496 2497 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2498 entries); 2499 } 2500 mtx_unlock(&softc->ctl_lock); 2501 2502 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2503 ooa_hdr->fill_len = ooa_hdr->fill_num * 2504 sizeof(struct ctl_ooa_entry); 2505 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2506 if (retval != 0) { 2507 printf("%s: error copying out %d bytes for OOA dump\n", 2508 __func__, ooa_hdr->fill_len); 2509 } 2510 2511 getbintime(&ooa_hdr->cur_bt); 2512 2513 if (cur_fill_num > ooa_hdr->alloc_num) { 2514 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2515 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2516 } else { 2517 ooa_hdr->dropped_num = 0; 2518 ooa_hdr->status = CTL_OOA_OK; 2519 } 2520 2521 free(entries, M_CTL); 2522 break; 2523 } 2524 case CTL_CHECK_OOA: { 2525 union ctl_io *io; 2526 struct ctl_lun *lun; 2527 struct ctl_ooa_info *ooa_info; 2528 2529 2530 ooa_info = (struct ctl_ooa_info *)addr; 2531 2532 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2533 ooa_info->status = CTL_OOA_INVALID_LUN; 2534 break; 2535 } 2536 mtx_lock(&softc->ctl_lock); 2537 lun = softc->ctl_luns[ooa_info->lun_id]; 2538 if (lun == NULL) { 2539 mtx_unlock(&softc->ctl_lock); 2540 ooa_info->status = CTL_OOA_INVALID_LUN; 2541 break; 2542 } 2543 2544 ooa_info->num_entries = 0; 2545 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2546 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2547 &io->io_hdr, ooa_links)) { 2548 ooa_info->num_entries++; 2549 } 2550 2551 mtx_unlock(&softc->ctl_lock); 2552 ooa_info->status = CTL_OOA_SUCCESS; 2553 2554 break; 2555 } 2556 case CTL_HARD_START: 2557 case CTL_HARD_STOP: { 2558 struct ctl_fe_ioctl_startstop_info ss_info; 2559 struct cfi_metatask *metatask; 2560 struct mtx hs_mtx; 2561 2562 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2563 2564 cv_init(&ss_info.sem, "hard start/stop cv" ); 2565 2566 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2567 if (metatask == NULL) { 2568 retval = ENOMEM; 2569 mtx_destroy(&hs_mtx); 2570 break; 2571 } 2572 2573 if (cmd == CTL_HARD_START) 2574 metatask->tasktype = CFI_TASK_STARTUP; 2575 else 2576 metatask->tasktype = CFI_TASK_SHUTDOWN; 2577 2578 metatask->callback = ctl_ioctl_hard_startstop_callback; 2579 metatask->callback_arg = &ss_info; 2580 2581 cfi_action(metatask); 2582 2583 /* Wait for the callback */ 2584 mtx_lock(&hs_mtx); 2585 cv_wait_sig(&ss_info.sem, &hs_mtx); 2586 mtx_unlock(&hs_mtx); 2587 2588 /* 2589 * All information has been copied from the metatask by the 2590 * time cv_broadcast() is called, so we free the metatask here. 2591 */ 2592 cfi_free_metatask(metatask); 2593 2594 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2595 2596 mtx_destroy(&hs_mtx); 2597 break; 2598 } 2599 case CTL_BBRREAD: { 2600 struct ctl_bbrread_info *bbr_info; 2601 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2602 struct mtx bbr_mtx; 2603 struct cfi_metatask *metatask; 2604 2605 bbr_info = (struct ctl_bbrread_info *)addr; 2606 2607 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2608 2609 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2610 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2611 2612 fe_bbr_info.bbr_info = bbr_info; 2613 fe_bbr_info.lock = &bbr_mtx; 2614 2615 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2616 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2617 2618 if (metatask == NULL) { 2619 mtx_destroy(&bbr_mtx); 2620 cv_destroy(&fe_bbr_info.sem); 2621 retval = ENOMEM; 2622 break; 2623 } 2624 metatask->tasktype = CFI_TASK_BBRREAD; 2625 metatask->callback = ctl_ioctl_bbrread_callback; 2626 metatask->callback_arg = &fe_bbr_info; 2627 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2628 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2629 metatask->taskinfo.bbrread.len = bbr_info->len; 2630 2631 cfi_action(metatask); 2632 2633 mtx_lock(&bbr_mtx); 2634 while (fe_bbr_info.wakeup_done == 0) 2635 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2636 mtx_unlock(&bbr_mtx); 2637 2638 bbr_info->status = metatask->status; 2639 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2640 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2641 memcpy(&bbr_info->sense_data, 2642 &metatask->taskinfo.bbrread.sense_data, 2643 ctl_min(sizeof(bbr_info->sense_data), 2644 sizeof(metatask->taskinfo.bbrread.sense_data))); 2645 2646 cfi_free_metatask(metatask); 2647 2648 mtx_destroy(&bbr_mtx); 2649 cv_destroy(&fe_bbr_info.sem); 2650 2651 break; 2652 } 2653 case CTL_DELAY_IO: { 2654 struct ctl_io_delay_info *delay_info; 2655 #ifdef CTL_IO_DELAY 2656 struct ctl_lun *lun; 2657 #endif /* CTL_IO_DELAY */ 2658 2659 delay_info = (struct ctl_io_delay_info *)addr; 2660 2661 #ifdef CTL_IO_DELAY 2662 mtx_lock(&softc->ctl_lock); 2663 2664 if ((delay_info->lun_id > CTL_MAX_LUNS) 2665 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2666 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2667 } else { 2668 lun = softc->ctl_luns[delay_info->lun_id]; 2669 2670 delay_info->status = CTL_DELAY_STATUS_OK; 2671 2672 switch (delay_info->delay_type) { 2673 case CTL_DELAY_TYPE_CONT: 2674 break; 2675 case CTL_DELAY_TYPE_ONESHOT: 2676 break; 2677 default: 2678 delay_info->status = 2679 CTL_DELAY_STATUS_INVALID_TYPE; 2680 break; 2681 } 2682 2683 switch (delay_info->delay_loc) { 2684 case CTL_DELAY_LOC_DATAMOVE: 2685 lun->delay_info.datamove_type = 2686 delay_info->delay_type; 2687 lun->delay_info.datamove_delay = 2688 delay_info->delay_secs; 2689 break; 2690 case CTL_DELAY_LOC_DONE: 2691 lun->delay_info.done_type = 2692 delay_info->delay_type; 2693 lun->delay_info.done_delay = 2694 delay_info->delay_secs; 2695 break; 2696 default: 2697 delay_info->status = 2698 CTL_DELAY_STATUS_INVALID_LOC; 2699 break; 2700 } 2701 } 2702 2703 mtx_unlock(&softc->ctl_lock); 2704 #else 2705 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2706 #endif /* CTL_IO_DELAY */ 2707 break; 2708 } 2709 case CTL_REALSYNC_SET: { 2710 int *syncstate; 2711 2712 syncstate = (int *)addr; 2713 2714 mtx_lock(&softc->ctl_lock); 2715 switch (*syncstate) { 2716 case 0: 2717 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2718 break; 2719 case 1: 2720 softc->flags |= CTL_FLAG_REAL_SYNC; 2721 break; 2722 default: 2723 retval = -EINVAL; 2724 break; 2725 } 2726 mtx_unlock(&softc->ctl_lock); 2727 break; 2728 } 2729 case CTL_REALSYNC_GET: { 2730 int *syncstate; 2731 2732 syncstate = (int*)addr; 2733 2734 mtx_lock(&softc->ctl_lock); 2735 if (softc->flags & CTL_FLAG_REAL_SYNC) 2736 *syncstate = 1; 2737 else 2738 *syncstate = 0; 2739 mtx_unlock(&softc->ctl_lock); 2740 2741 break; 2742 } 2743 case CTL_SETSYNC: 2744 case CTL_GETSYNC: { 2745 struct ctl_sync_info *sync_info; 2746 struct ctl_lun *lun; 2747 2748 sync_info = (struct ctl_sync_info *)addr; 2749 2750 mtx_lock(&softc->ctl_lock); 2751 lun = softc->ctl_luns[sync_info->lun_id]; 2752 if (lun == NULL) { 2753 mtx_unlock(&softc->ctl_lock); 2754 sync_info->status = CTL_GS_SYNC_NO_LUN; 2755 } 2756 /* 2757 * Get or set the sync interval. We're not bounds checking 2758 * in the set case, hopefully the user won't do something 2759 * silly. 2760 */ 2761 if (cmd == CTL_GETSYNC) 2762 sync_info->sync_interval = lun->sync_interval; 2763 else 2764 lun->sync_interval = sync_info->sync_interval; 2765 2766 mtx_unlock(&softc->ctl_lock); 2767 2768 sync_info->status = CTL_GS_SYNC_OK; 2769 2770 break; 2771 } 2772 case CTL_GETSTATS: { 2773 struct ctl_stats *stats; 2774 struct ctl_lun *lun; 2775 int i; 2776 2777 stats = (struct ctl_stats *)addr; 2778 2779 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2780 stats->alloc_len) { 2781 stats->status = CTL_SS_NEED_MORE_SPACE; 2782 stats->num_luns = softc->num_luns; 2783 break; 2784 } 2785 /* 2786 * XXX KDM no locking here. If the LUN list changes, 2787 * things can blow up. 2788 */ 2789 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2790 i++, lun = STAILQ_NEXT(lun, links)) { 2791 retval = copyout(&lun->stats, &stats->lun_stats[i], 2792 sizeof(lun->stats)); 2793 if (retval != 0) 2794 break; 2795 } 2796 stats->num_luns = softc->num_luns; 2797 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2798 softc->num_luns; 2799 stats->status = CTL_SS_OK; 2800 #ifdef CTL_TIME_IO 2801 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2802 #else 2803 stats->flags = CTL_STATS_FLAG_NONE; 2804 #endif 2805 getnanouptime(&stats->timestamp); 2806 break; 2807 } 2808 case CTL_ERROR_INJECT: { 2809 struct ctl_error_desc *err_desc, *new_err_desc; 2810 struct ctl_lun *lun; 2811 2812 err_desc = (struct ctl_error_desc *)addr; 2813 2814 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2815 M_WAITOK | M_ZERO); 2816 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2817 2818 mtx_lock(&softc->ctl_lock); 2819 lun = softc->ctl_luns[err_desc->lun_id]; 2820 if (lun == NULL) { 2821 mtx_unlock(&softc->ctl_lock); 2822 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2823 __func__, (uintmax_t)err_desc->lun_id); 2824 retval = EINVAL; 2825 break; 2826 } 2827 2828 /* 2829 * We could do some checking here to verify the validity 2830 * of the request, but given the complexity of error 2831 * injection requests, the checking logic would be fairly 2832 * complex. 2833 * 2834 * For now, if the request is invalid, it just won't get 2835 * executed and might get deleted. 2836 */ 2837 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2838 2839 /* 2840 * XXX KDM check to make sure the serial number is unique, 2841 * in case we somehow manage to wrap. That shouldn't 2842 * happen for a very long time, but it's the right thing to 2843 * do. 2844 */ 2845 new_err_desc->serial = lun->error_serial; 2846 err_desc->serial = lun->error_serial; 2847 lun->error_serial++; 2848 2849 mtx_unlock(&softc->ctl_lock); 2850 break; 2851 } 2852 case CTL_ERROR_INJECT_DELETE: { 2853 struct ctl_error_desc *delete_desc, *desc, *desc2; 2854 struct ctl_lun *lun; 2855 int delete_done; 2856 2857 delete_desc = (struct ctl_error_desc *)addr; 2858 delete_done = 0; 2859 2860 mtx_lock(&softc->ctl_lock); 2861 lun = softc->ctl_luns[delete_desc->lun_id]; 2862 if (lun == NULL) { 2863 mtx_unlock(&softc->ctl_lock); 2864 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2865 __func__, (uintmax_t)delete_desc->lun_id); 2866 retval = EINVAL; 2867 break; 2868 } 2869 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2870 if (desc->serial != delete_desc->serial) 2871 continue; 2872 2873 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2874 links); 2875 free(desc, M_CTL); 2876 delete_done = 1; 2877 } 2878 mtx_unlock(&softc->ctl_lock); 2879 if (delete_done == 0) { 2880 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2881 "error serial %ju on LUN %u\n", __func__, 2882 delete_desc->serial, delete_desc->lun_id); 2883 retval = EINVAL; 2884 break; 2885 } 2886 break; 2887 } 2888 case CTL_DUMP_STRUCTS: { 2889 int i, j, k; 2890 struct ctl_frontend *fe; 2891 2892 printf("CTL IID to WWPN map start:\n"); 2893 for (i = 0; i < CTL_MAX_PORTS; i++) { 2894 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2895 if (softc->wwpn_iid[i][j].in_use == 0) 2896 continue; 2897 2898 printf("port %d iid %u WWPN %#jx\n", 2899 softc->wwpn_iid[i][j].port, 2900 softc->wwpn_iid[i][j].iid, 2901 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2902 } 2903 } 2904 printf("CTL IID to WWPN map end\n"); 2905 printf("CTL Persistent Reservation information start:\n"); 2906 for (i = 0; i < CTL_MAX_LUNS; i++) { 2907 struct ctl_lun *lun; 2908 2909 lun = softc->ctl_luns[i]; 2910 2911 if ((lun == NULL) 2912 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2913 continue; 2914 2915 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2916 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2917 if (lun->per_res[j+k].registered == 0) 2918 continue; 2919 printf("LUN %d port %d iid %d key " 2920 "%#jx\n", i, j, k, 2921 (uintmax_t)scsi_8btou64( 2922 lun->per_res[j+k].res_key.key)); 2923 } 2924 } 2925 } 2926 printf("CTL Persistent Reservation information end\n"); 2927 printf("CTL Frontends:\n"); 2928 /* 2929 * XXX KDM calling this without a lock. We'd likely want 2930 * to drop the lock before calling the frontend's dump 2931 * routine anyway. 2932 */ 2933 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2934 printf("Frontend %s Type %u pport %d vport %d WWNN " 2935 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2936 fe->physical_port, fe->virtual_port, 2937 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2938 2939 /* 2940 * Frontends are not required to support the dump 2941 * routine. 2942 */ 2943 if (fe->fe_dump == NULL) 2944 continue; 2945 2946 fe->fe_dump(); 2947 } 2948 printf("CTL Frontend information end\n"); 2949 break; 2950 } 2951 case CTL_LUN_REQ: { 2952 struct ctl_lun_req *lun_req; 2953 struct ctl_backend_driver *backend; 2954 2955 lun_req = (struct ctl_lun_req *)addr; 2956 2957 backend = ctl_backend_find(lun_req->backend); 2958 if (backend == NULL) { 2959 lun_req->status = CTL_LUN_ERROR; 2960 snprintf(lun_req->error_str, 2961 sizeof(lun_req->error_str), 2962 "Backend \"%s\" not found.", 2963 lun_req->backend); 2964 break; 2965 } 2966 if (lun_req->num_be_args > 0) { 2967 lun_req->kern_be_args = ctl_copyin_args( 2968 lun_req->num_be_args, 2969 lun_req->be_args, 2970 lun_req->error_str, 2971 sizeof(lun_req->error_str)); 2972 if (lun_req->kern_be_args == NULL) { 2973 lun_req->status = CTL_LUN_ERROR; 2974 break; 2975 } 2976 } 2977 2978 retval = backend->ioctl(dev, cmd, addr, flag, td); 2979 2980 if (lun_req->num_be_args > 0) { 2981 ctl_free_args(lun_req->num_be_args, 2982 lun_req->kern_be_args); 2983 } 2984 break; 2985 } 2986 case CTL_LUN_LIST: { 2987 struct sbuf *sb; 2988 struct ctl_lun *lun; 2989 struct ctl_lun_list *list; 2990 2991 list = (struct ctl_lun_list *)addr; 2992 2993 /* 2994 * Allocate a fixed length sbuf here, based on the length 2995 * of the user's buffer. We could allocate an auto-extending 2996 * buffer, and then tell the user how much larger our 2997 * amount of data is than his buffer, but that presents 2998 * some problems: 2999 * 3000 * 1. The sbuf(9) routines use a blocking malloc, and so 3001 * we can't hold a lock while calling them with an 3002 * auto-extending buffer. 3003 * 3004 * 2. There is not currently a LUN reference counting 3005 * mechanism, outside of outstanding transactions on 3006 * the LUN's OOA queue. So a LUN could go away on us 3007 * while we're getting the LUN number, backend-specific 3008 * information, etc. Thus, given the way things 3009 * currently work, we need to hold the CTL lock while 3010 * grabbing LUN information. 3011 * 3012 * So, from the user's standpoint, the best thing to do is 3013 * allocate what he thinks is a reasonable buffer length, 3014 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3015 * double the buffer length and try again. (And repeat 3016 * that until he succeeds.) 3017 */ 3018 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3019 if (sb == NULL) { 3020 list->status = CTL_LUN_LIST_ERROR; 3021 snprintf(list->error_str, sizeof(list->error_str), 3022 "Unable to allocate %d bytes for LUN list", 3023 list->alloc_len); 3024 break; 3025 } 3026 3027 sbuf_printf(sb, "<ctllunlist>\n"); 3028 3029 mtx_lock(&softc->ctl_lock); 3030 3031 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3032 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3033 (uintmax_t)lun->lun); 3034 3035 /* 3036 * Bail out as soon as we see that we've overfilled 3037 * the buffer. 3038 */ 3039 if (retval != 0) 3040 break; 3041 3042 retval = sbuf_printf(sb, "<backend_type>%s" 3043 "</backend_type>\n", 3044 (lun->backend == NULL) ? "none" : 3045 lun->backend->name); 3046 3047 if (retval != 0) 3048 break; 3049 3050 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3051 lun->be_lun->lun_type); 3052 3053 if (retval != 0) 3054 break; 3055 3056 if (lun->backend == NULL) { 3057 retval = sbuf_printf(sb, "</lun>\n"); 3058 if (retval != 0) 3059 break; 3060 continue; 3061 } 3062 3063 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3064 (lun->be_lun->maxlba > 0) ? 3065 lun->be_lun->maxlba + 1 : 0); 3066 3067 if (retval != 0) 3068 break; 3069 3070 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3071 lun->be_lun->blocksize); 3072 3073 if (retval != 0) 3074 break; 3075 3076 retval = sbuf_printf(sb, "<serial_number>"); 3077 3078 if (retval != 0) 3079 break; 3080 3081 retval = ctl_sbuf_printf_esc(sb, 3082 lun->be_lun->serial_num); 3083 3084 if (retval != 0) 3085 break; 3086 3087 retval = sbuf_printf(sb, "</serial_number>\n"); 3088 3089 if (retval != 0) 3090 break; 3091 3092 retval = sbuf_printf(sb, "<device_id>"); 3093 3094 if (retval != 0) 3095 break; 3096 3097 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3098 3099 if (retval != 0) 3100 break; 3101 3102 retval = sbuf_printf(sb, "</device_id>\n"); 3103 3104 if (retval != 0) 3105 break; 3106 3107 if (lun->backend->lun_info == NULL) { 3108 retval = sbuf_printf(sb, "</lun>\n"); 3109 if (retval != 0) 3110 break; 3111 continue; 3112 } 3113 3114 retval =lun->backend->lun_info(lun->be_lun->be_lun, sb); 3115 3116 if (retval != 0) 3117 break; 3118 3119 retval = sbuf_printf(sb, "</lun>\n"); 3120 3121 if (retval != 0) 3122 break; 3123 } 3124 mtx_unlock(&softc->ctl_lock); 3125 3126 if ((retval != 0) 3127 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3128 retval = 0; 3129 sbuf_delete(sb); 3130 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3131 snprintf(list->error_str, sizeof(list->error_str), 3132 "Out of space, %d bytes is too small", 3133 list->alloc_len); 3134 break; 3135 } 3136 3137 sbuf_finish(sb); 3138 3139 retval = copyout(sbuf_data(sb), list->lun_xml, 3140 sbuf_len(sb) + 1); 3141 3142 list->fill_len = sbuf_len(sb) + 1; 3143 list->status = CTL_LUN_LIST_OK; 3144 sbuf_delete(sb); 3145 break; 3146 } 3147 default: { 3148 /* XXX KDM should we fix this? */ 3149 #if 0 3150 struct ctl_backend_driver *backend; 3151 unsigned int type; 3152 int found; 3153 3154 found = 0; 3155 3156 /* 3157 * We encode the backend type as the ioctl type for backend 3158 * ioctls. So parse it out here, and then search for a 3159 * backend of this type. 3160 */ 3161 type = _IOC_TYPE(cmd); 3162 3163 STAILQ_FOREACH(backend, &softc->be_list, links) { 3164 if (backend->type == type) { 3165 found = 1; 3166 break; 3167 } 3168 } 3169 if (found == 0) { 3170 printf("ctl: unknown ioctl command %#lx or backend " 3171 "%d\n", cmd, type); 3172 retval = -EINVAL; 3173 break; 3174 } 3175 retval = backend->ioctl(dev, cmd, addr, flag, td); 3176 #endif 3177 retval = ENOTTY; 3178 break; 3179 } 3180 } 3181 return (retval); 3182 } 3183 3184 uint32_t 3185 ctl_get_initindex(struct ctl_nexus *nexus) 3186 { 3187 if (nexus->targ_port < CTL_MAX_PORTS) 3188 return (nexus->initid.id + 3189 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3190 else 3191 return (nexus->initid.id + 3192 ((nexus->targ_port - CTL_MAX_PORTS) * 3193 CTL_MAX_INIT_PER_PORT)); 3194 } 3195 3196 uint32_t 3197 ctl_get_resindex(struct ctl_nexus *nexus) 3198 { 3199 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3200 } 3201 3202 uint32_t 3203 ctl_port_idx(int port_num) 3204 { 3205 if (port_num < CTL_MAX_PORTS) 3206 return(port_num); 3207 else 3208 return(port_num - CTL_MAX_PORTS); 3209 } 3210 3211 /* 3212 * Note: This only works for bitmask sizes that are at least 32 bits, and 3213 * that are a power of 2. 3214 */ 3215 int 3216 ctl_ffz(uint32_t *mask, uint32_t size) 3217 { 3218 uint32_t num_chunks, num_pieces; 3219 int i, j; 3220 3221 num_chunks = (size >> 5); 3222 if (num_chunks == 0) 3223 num_chunks++; 3224 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3225 3226 for (i = 0; i < num_chunks; i++) { 3227 for (j = 0; j < num_pieces; j++) { 3228 if ((mask[i] & (1 << j)) == 0) 3229 return ((i << 5) + j); 3230 } 3231 } 3232 3233 return (-1); 3234 } 3235 3236 int 3237 ctl_set_mask(uint32_t *mask, uint32_t bit) 3238 { 3239 uint32_t chunk, piece; 3240 3241 chunk = bit >> 5; 3242 piece = bit % (sizeof(uint32_t) * 8); 3243 3244 if ((mask[chunk] & (1 << piece)) != 0) 3245 return (-1); 3246 else 3247 mask[chunk] |= (1 << piece); 3248 3249 return (0); 3250 } 3251 3252 int 3253 ctl_clear_mask(uint32_t *mask, uint32_t bit) 3254 { 3255 uint32_t chunk, piece; 3256 3257 chunk = bit >> 5; 3258 piece = bit % (sizeof(uint32_t) * 8); 3259 3260 if ((mask[chunk] & (1 << piece)) == 0) 3261 return (-1); 3262 else 3263 mask[chunk] &= ~(1 << piece); 3264 3265 return (0); 3266 } 3267 3268 int 3269 ctl_is_set(uint32_t *mask, uint32_t bit) 3270 { 3271 uint32_t chunk, piece; 3272 3273 chunk = bit >> 5; 3274 piece = bit % (sizeof(uint32_t) * 8); 3275 3276 if ((mask[chunk] & (1 << piece)) == 0) 3277 return (0); 3278 else 3279 return (1); 3280 } 3281 3282 #ifdef unused 3283 /* 3284 * The bus, target and lun are optional, they can be filled in later. 3285 * can_wait is used to determine whether we can wait on the malloc or not. 3286 */ 3287 union ctl_io* 3288 ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3289 uint32_t targ_lun, int can_wait) 3290 { 3291 union ctl_io *io; 3292 3293 if (can_wait) 3294 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3295 else 3296 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3297 3298 if (io != NULL) { 3299 io->io_hdr.io_type = io_type; 3300 io->io_hdr.targ_port = targ_port; 3301 /* 3302 * XXX KDM this needs to change/go away. We need to move 3303 * to a preallocated pool of ctl_scsiio structures. 3304 */ 3305 io->io_hdr.nexus.targ_target.id = targ_target; 3306 io->io_hdr.nexus.targ_lun = targ_lun; 3307 } 3308 3309 return (io); 3310 } 3311 3312 void 3313 ctl_kfree_io(union ctl_io *io) 3314 { 3315 free(io, M_CTL); 3316 } 3317 #endif /* unused */ 3318 3319 /* 3320 * ctl_softc, pool_type, total_ctl_io are passed in. 3321 * npool is passed out. 3322 */ 3323 int 3324 ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3325 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3326 { 3327 uint32_t i; 3328 union ctl_io *cur_io, *next_io; 3329 struct ctl_io_pool *pool; 3330 int retval; 3331 3332 retval = 0; 3333 3334 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3335 M_NOWAIT | M_ZERO); 3336 if (pool == NULL) { 3337 retval = -ENOMEM; 3338 goto bailout; 3339 } 3340 3341 pool->type = pool_type; 3342 pool->ctl_softc = ctl_softc; 3343 3344 mtx_lock(&ctl_softc->ctl_lock); 3345 pool->id = ctl_softc->cur_pool_id++; 3346 mtx_unlock(&ctl_softc->ctl_lock); 3347 3348 pool->flags = CTL_POOL_FLAG_NONE; 3349 STAILQ_INIT(&pool->free_queue); 3350 3351 /* 3352 * XXX KDM other options here: 3353 * - allocate a page at a time 3354 * - allocate one big chunk of memory. 3355 * Page allocation might work well, but would take a little more 3356 * tracking. 3357 */ 3358 for (i = 0; i < total_ctl_io; i++) { 3359 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3360 M_NOWAIT); 3361 if (cur_io == NULL) { 3362 retval = ENOMEM; 3363 break; 3364 } 3365 cur_io->io_hdr.pool = pool; 3366 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3367 pool->total_ctl_io++; 3368 pool->free_ctl_io++; 3369 } 3370 3371 if (retval != 0) { 3372 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3373 cur_io != NULL; cur_io = next_io) { 3374 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3375 links); 3376 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3377 ctl_io_hdr, links); 3378 free(cur_io, M_CTL); 3379 } 3380 3381 free(pool, M_CTL); 3382 goto bailout; 3383 } 3384 mtx_lock(&ctl_softc->ctl_lock); 3385 ctl_softc->num_pools++; 3386 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3387 /* 3388 * Increment our usage count if this is an external consumer, so we 3389 * can't get unloaded until the external consumer (most likely a 3390 * FETD) unloads and frees his pool. 3391 * 3392 * XXX KDM will this increment the caller's module use count, or 3393 * mine? 3394 */ 3395 #if 0 3396 if ((pool_type != CTL_POOL_EMERGENCY) 3397 && (pool_type != CTL_POOL_INTERNAL) 3398 && (pool_type != CTL_POOL_IOCTL) 3399 && (pool_type != CTL_POOL_4OTHERSC)) 3400 MOD_INC_USE_COUNT; 3401 #endif 3402 3403 mtx_unlock(&ctl_softc->ctl_lock); 3404 3405 *npool = pool; 3406 3407 bailout: 3408 3409 return (retval); 3410 } 3411 3412 /* 3413 * Caller must hold ctl_softc->ctl_lock. 3414 */ 3415 int 3416 ctl_pool_acquire(struct ctl_io_pool *pool) 3417 { 3418 if (pool == NULL) 3419 return (-EINVAL); 3420 3421 if (pool->flags & CTL_POOL_FLAG_INVALID) 3422 return (-EINVAL); 3423 3424 pool->refcount++; 3425 3426 return (0); 3427 } 3428 3429 /* 3430 * Caller must hold ctl_softc->ctl_lock. 3431 */ 3432 int 3433 ctl_pool_invalidate(struct ctl_io_pool *pool) 3434 { 3435 if (pool == NULL) 3436 return (-EINVAL); 3437 3438 pool->flags |= CTL_POOL_FLAG_INVALID; 3439 3440 return (0); 3441 } 3442 3443 /* 3444 * Caller must hold ctl_softc->ctl_lock. 3445 */ 3446 int 3447 ctl_pool_release(struct ctl_io_pool *pool) 3448 { 3449 if (pool == NULL) 3450 return (-EINVAL); 3451 3452 if ((--pool->refcount == 0) 3453 && (pool->flags & CTL_POOL_FLAG_INVALID)) { 3454 ctl_pool_free(pool->ctl_softc, pool); 3455 } 3456 3457 return (0); 3458 } 3459 3460 /* 3461 * Must be called with ctl_softc->ctl_lock held. 3462 */ 3463 void 3464 ctl_pool_free(struct ctl_softc *ctl_softc, struct ctl_io_pool *pool) 3465 { 3466 union ctl_io *cur_io, *next_io; 3467 3468 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3469 cur_io != NULL; cur_io = next_io) { 3470 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3471 links); 3472 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, ctl_io_hdr, 3473 links); 3474 free(cur_io, M_CTL); 3475 } 3476 3477 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3478 ctl_softc->num_pools--; 3479 3480 /* 3481 * XXX KDM will this decrement the caller's usage count or mine? 3482 */ 3483 #if 0 3484 if ((pool->type != CTL_POOL_EMERGENCY) 3485 && (pool->type != CTL_POOL_INTERNAL) 3486 && (pool->type != CTL_POOL_IOCTL)) 3487 MOD_DEC_USE_COUNT; 3488 #endif 3489 3490 free(pool, M_CTL); 3491 } 3492 3493 /* 3494 * This routine does not block (except for spinlocks of course). 3495 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3496 * possible. 3497 */ 3498 union ctl_io * 3499 ctl_alloc_io(void *pool_ref) 3500 { 3501 union ctl_io *io; 3502 struct ctl_softc *ctl_softc; 3503 struct ctl_io_pool *pool, *npool; 3504 struct ctl_io_pool *emergency_pool; 3505 3506 pool = (struct ctl_io_pool *)pool_ref; 3507 3508 if (pool == NULL) { 3509 printf("%s: pool is NULL\n", __func__); 3510 return (NULL); 3511 } 3512 3513 emergency_pool = NULL; 3514 3515 ctl_softc = pool->ctl_softc; 3516 3517 mtx_lock(&ctl_softc->ctl_lock); 3518 /* 3519 * First, try to get the io structure from the user's pool. 3520 */ 3521 if (ctl_pool_acquire(pool) == 0) { 3522 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3523 if (io != NULL) { 3524 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3525 pool->total_allocated++; 3526 pool->free_ctl_io--; 3527 mtx_unlock(&ctl_softc->ctl_lock); 3528 return (io); 3529 } else 3530 ctl_pool_release(pool); 3531 } 3532 /* 3533 * If he doesn't have any io structures left, search for an 3534 * emergency pool and grab one from there. 3535 */ 3536 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3537 if (npool->type != CTL_POOL_EMERGENCY) 3538 continue; 3539 3540 if (ctl_pool_acquire(npool) != 0) 3541 continue; 3542 3543 emergency_pool = npool; 3544 3545 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3546 if (io != NULL) { 3547 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3548 npool->total_allocated++; 3549 npool->free_ctl_io--; 3550 mtx_unlock(&ctl_softc->ctl_lock); 3551 return (io); 3552 } else 3553 ctl_pool_release(npool); 3554 } 3555 3556 /* Drop the spinlock before we malloc */ 3557 mtx_unlock(&ctl_softc->ctl_lock); 3558 3559 /* 3560 * The emergency pool (if it exists) didn't have one, so try an 3561 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3562 */ 3563 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3564 if (io != NULL) { 3565 /* 3566 * If the emergency pool exists but is empty, add this 3567 * ctl_io to its list when it gets freed. 3568 */ 3569 if (emergency_pool != NULL) { 3570 mtx_lock(&ctl_softc->ctl_lock); 3571 if (ctl_pool_acquire(emergency_pool) == 0) { 3572 io->io_hdr.pool = emergency_pool; 3573 emergency_pool->total_ctl_io++; 3574 /* 3575 * Need to bump this, otherwise 3576 * total_allocated and total_freed won't 3577 * match when we no longer have anything 3578 * outstanding. 3579 */ 3580 emergency_pool->total_allocated++; 3581 } 3582 mtx_unlock(&ctl_softc->ctl_lock); 3583 } else 3584 io->io_hdr.pool = NULL; 3585 } 3586 3587 return (io); 3588 } 3589 3590 static void 3591 ctl_free_io_internal(union ctl_io *io, int have_lock) 3592 { 3593 if (io == NULL) 3594 return; 3595 3596 /* 3597 * If this ctl_io has a pool, return it to that pool. 3598 */ 3599 if (io->io_hdr.pool != NULL) { 3600 struct ctl_io_pool *pool; 3601 #if 0 3602 struct ctl_softc *ctl_softc; 3603 union ctl_io *tmp_io; 3604 unsigned long xflags; 3605 int i; 3606 3607 ctl_softc = control_softc; 3608 #endif 3609 3610 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3611 3612 if (have_lock == 0) 3613 mtx_lock(&pool->ctl_softc->ctl_lock); 3614 #if 0 3615 save_flags(xflags); 3616 3617 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3618 &ctl_softc->task_queue); tmp_io != NULL; i++, 3619 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3620 links)) { 3621 if (tmp_io == io) { 3622 printf("%s: %p is still on the task queue!\n", 3623 __func__, tmp_io); 3624 printf("%s: (%d): type %d " 3625 "msg %d cdb %x iptl: " 3626 "%d:%d:%d:%d tag 0x%04x " 3627 "flg %#lx\n", 3628 __func__, i, 3629 tmp_io->io_hdr.io_type, 3630 tmp_io->io_hdr.msg_type, 3631 tmp_io->scsiio.cdb[0], 3632 tmp_io->io_hdr.nexus.initid.id, 3633 tmp_io->io_hdr.nexus.targ_port, 3634 tmp_io->io_hdr.nexus.targ_target.id, 3635 tmp_io->io_hdr.nexus.targ_lun, 3636 (tmp_io->io_hdr.io_type == 3637 CTL_IO_TASK) ? 3638 tmp_io->taskio.tag_num : 3639 tmp_io->scsiio.tag_num, 3640 xflags); 3641 panic("I/O still on the task queue!"); 3642 } 3643 } 3644 #endif 3645 io->io_hdr.io_type = 0xff; 3646 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3647 pool->total_freed++; 3648 pool->free_ctl_io++; 3649 ctl_pool_release(pool); 3650 if (have_lock == 0) 3651 mtx_unlock(&pool->ctl_softc->ctl_lock); 3652 } else { 3653 /* 3654 * Otherwise, just free it. We probably malloced it and 3655 * the emergency pool wasn't available. 3656 */ 3657 free(io, M_CTL); 3658 } 3659 3660 } 3661 3662 void 3663 ctl_free_io(union ctl_io *io) 3664 { 3665 ctl_free_io_internal(io, /*have_lock*/ 0); 3666 } 3667 3668 void 3669 ctl_zero_io(union ctl_io *io) 3670 { 3671 void *pool_ref; 3672 3673 if (io == NULL) 3674 return; 3675 3676 /* 3677 * May need to preserve linked list pointers at some point too. 3678 */ 3679 pool_ref = io->io_hdr.pool; 3680 3681 memset(io, 0, sizeof(*io)); 3682 3683 io->io_hdr.pool = pool_ref; 3684 } 3685 3686 /* 3687 * This routine is currently used for internal copies of ctl_ios that need 3688 * to persist for some reason after we've already returned status to the 3689 * FETD. (Thus the flag set.) 3690 * 3691 * XXX XXX 3692 * Note that this makes a blind copy of all fields in the ctl_io, except 3693 * for the pool reference. This includes any memory that has been 3694 * allocated! That memory will no longer be valid after done has been 3695 * called, so this would be VERY DANGEROUS for command that actually does 3696 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3697 * start and stop commands, which don't transfer any data, so this is not a 3698 * problem. If it is used for anything else, the caller would also need to 3699 * allocate data buffer space and this routine would need to be modified to 3700 * copy the data buffer(s) as well. 3701 */ 3702 void 3703 ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3704 { 3705 void *pool_ref; 3706 3707 if ((src == NULL) 3708 || (dest == NULL)) 3709 return; 3710 3711 /* 3712 * May need to preserve linked list pointers at some point too. 3713 */ 3714 pool_ref = dest->io_hdr.pool; 3715 3716 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3717 3718 dest->io_hdr.pool = pool_ref; 3719 /* 3720 * We need to know that this is an internal copy, and doesn't need 3721 * to get passed back to the FETD that allocated it. 3722 */ 3723 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3724 } 3725 3726 #ifdef NEEDTOPORT 3727 static void 3728 ctl_update_power_subpage(struct copan_power_subpage *page) 3729 { 3730 int num_luns, num_partitions, config_type; 3731 struct ctl_softc *softc; 3732 cs_BOOL_t aor_present, shelf_50pct_power; 3733 cs_raidset_personality_t rs_type; 3734 int max_active_luns; 3735 3736 softc = control_softc; 3737 3738 /* subtract out the processor LUN */ 3739 num_luns = softc->num_luns - 1; 3740 /* 3741 * Default to 7 LUNs active, which was the only number we allowed 3742 * in the past. 3743 */ 3744 max_active_luns = 7; 3745 3746 num_partitions = config_GetRsPartitionInfo(); 3747 config_type = config_GetConfigType(); 3748 shelf_50pct_power = config_GetShelfPowerMode(); 3749 aor_present = config_IsAorRsPresent(); 3750 3751 rs_type = ddb_GetRsRaidType(1); 3752 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3753 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3754 EPRINT(0, "Unsupported RS type %d!", rs_type); 3755 } 3756 3757 3758 page->total_luns = num_luns; 3759 3760 switch (config_type) { 3761 case 40: 3762 /* 3763 * In a 40 drive configuration, it doesn't matter what DC 3764 * cards we have, whether we have AOR enabled or not, 3765 * partitioning or not, or what type of RAIDset we have. 3766 * In that scenario, we can power up every LUN we present 3767 * to the user. 3768 */ 3769 max_active_luns = num_luns; 3770 3771 break; 3772 case 64: 3773 if (shelf_50pct_power == CS_FALSE) { 3774 /* 25% power */ 3775 if (aor_present == CS_TRUE) { 3776 if (rs_type == 3777 CS_RAIDSET_PERSONALITY_RAID5) { 3778 max_active_luns = 7; 3779 } else if (rs_type == 3780 CS_RAIDSET_PERSONALITY_RAID1){ 3781 max_active_luns = 14; 3782 } else { 3783 /* XXX KDM now what?? */ 3784 } 3785 } else { 3786 if (rs_type == 3787 CS_RAIDSET_PERSONALITY_RAID5) { 3788 max_active_luns = 8; 3789 } else if (rs_type == 3790 CS_RAIDSET_PERSONALITY_RAID1){ 3791 max_active_luns = 16; 3792 } else { 3793 /* XXX KDM now what?? */ 3794 } 3795 } 3796 } else { 3797 /* 50% power */ 3798 /* 3799 * With 50% power in a 64 drive configuration, we 3800 * can power all LUNs we present. 3801 */ 3802 max_active_luns = num_luns; 3803 } 3804 break; 3805 case 112: 3806 if (shelf_50pct_power == CS_FALSE) { 3807 /* 25% power */ 3808 if (aor_present == CS_TRUE) { 3809 if (rs_type == 3810 CS_RAIDSET_PERSONALITY_RAID5) { 3811 max_active_luns = 7; 3812 } else if (rs_type == 3813 CS_RAIDSET_PERSONALITY_RAID1){ 3814 max_active_luns = 14; 3815 } else { 3816 /* XXX KDM now what?? */ 3817 } 3818 } else { 3819 if (rs_type == 3820 CS_RAIDSET_PERSONALITY_RAID5) { 3821 max_active_luns = 8; 3822 } else if (rs_type == 3823 CS_RAIDSET_PERSONALITY_RAID1){ 3824 max_active_luns = 16; 3825 } else { 3826 /* XXX KDM now what?? */ 3827 } 3828 } 3829 } else { 3830 /* 50% power */ 3831 if (aor_present == CS_TRUE) { 3832 if (rs_type == 3833 CS_RAIDSET_PERSONALITY_RAID5) { 3834 max_active_luns = 14; 3835 } else if (rs_type == 3836 CS_RAIDSET_PERSONALITY_RAID1){ 3837 /* 3838 * We're assuming here that disk 3839 * caching is enabled, and so we're 3840 * able to power up half of each 3841 * LUN, and cache all writes. 3842 */ 3843 max_active_luns = num_luns; 3844 } else { 3845 /* XXX KDM now what?? */ 3846 } 3847 } else { 3848 if (rs_type == 3849 CS_RAIDSET_PERSONALITY_RAID5) { 3850 max_active_luns = 15; 3851 } else if (rs_type == 3852 CS_RAIDSET_PERSONALITY_RAID1){ 3853 max_active_luns = 30; 3854 } else { 3855 /* XXX KDM now what?? */ 3856 } 3857 } 3858 } 3859 break; 3860 default: 3861 /* 3862 * In this case, we have an unknown configuration, so we 3863 * just use the default from above. 3864 */ 3865 break; 3866 } 3867 3868 page->max_active_luns = max_active_luns; 3869 #if 0 3870 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3871 page->total_luns, page->max_active_luns); 3872 #endif 3873 } 3874 #endif /* NEEDTOPORT */ 3875 3876 /* 3877 * This routine could be used in the future to load default and/or saved 3878 * mode page parameters for a particuar lun. 3879 */ 3880 static int 3881 ctl_init_page_index(struct ctl_lun *lun) 3882 { 3883 int i; 3884 struct ctl_page_index *page_index; 3885 struct ctl_softc *softc; 3886 3887 memcpy(&lun->mode_pages.index, page_index_template, 3888 sizeof(page_index_template)); 3889 3890 softc = lun->ctl_softc; 3891 3892 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3893 3894 page_index = &lun->mode_pages.index[i]; 3895 /* 3896 * If this is a disk-only mode page, there's no point in 3897 * setting it up. For some pages, we have to have some 3898 * basic information about the disk in order to calculate the 3899 * mode page data. 3900 */ 3901 if ((lun->be_lun->lun_type != T_DIRECT) 3902 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3903 continue; 3904 3905 switch (page_index->page_code & SMPH_PC_MASK) { 3906 case SMS_FORMAT_DEVICE_PAGE: { 3907 struct scsi_format_page *format_page; 3908 3909 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3910 panic("subpage is incorrect!"); 3911 3912 /* 3913 * Sectors per track are set above. Bytes per 3914 * sector need to be set here on a per-LUN basis. 3915 */ 3916 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3917 &format_page_default, 3918 sizeof(format_page_default)); 3919 memcpy(&lun->mode_pages.format_page[ 3920 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3921 sizeof(format_page_changeable)); 3922 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3923 &format_page_default, 3924 sizeof(format_page_default)); 3925 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3926 &format_page_default, 3927 sizeof(format_page_default)); 3928 3929 format_page = &lun->mode_pages.format_page[ 3930 CTL_PAGE_CURRENT]; 3931 scsi_ulto2b(lun->be_lun->blocksize, 3932 format_page->bytes_per_sector); 3933 3934 format_page = &lun->mode_pages.format_page[ 3935 CTL_PAGE_DEFAULT]; 3936 scsi_ulto2b(lun->be_lun->blocksize, 3937 format_page->bytes_per_sector); 3938 3939 format_page = &lun->mode_pages.format_page[ 3940 CTL_PAGE_SAVED]; 3941 scsi_ulto2b(lun->be_lun->blocksize, 3942 format_page->bytes_per_sector); 3943 3944 page_index->page_data = 3945 (uint8_t *)lun->mode_pages.format_page; 3946 break; 3947 } 3948 case SMS_RIGID_DISK_PAGE: { 3949 struct scsi_rigid_disk_page *rigid_disk_page; 3950 uint32_t sectors_per_cylinder; 3951 uint64_t cylinders; 3952 #ifndef __XSCALE__ 3953 int shift; 3954 #endif /* !__XSCALE__ */ 3955 3956 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3957 panic("invalid subpage value %d", 3958 page_index->subpage); 3959 3960 /* 3961 * Rotation rate and sectors per track are set 3962 * above. We calculate the cylinders here based on 3963 * capacity. Due to the number of heads and 3964 * sectors per track we're using, smaller arrays 3965 * may turn out to have 0 cylinders. Linux and 3966 * FreeBSD don't pay attention to these mode pages 3967 * to figure out capacity, but Solaris does. It 3968 * seems to deal with 0 cylinders just fine, and 3969 * works out a fake geometry based on the capacity. 3970 */ 3971 memcpy(&lun->mode_pages.rigid_disk_page[ 3972 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3973 sizeof(rigid_disk_page_default)); 3974 memcpy(&lun->mode_pages.rigid_disk_page[ 3975 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3976 sizeof(rigid_disk_page_changeable)); 3977 memcpy(&lun->mode_pages.rigid_disk_page[ 3978 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3979 sizeof(rigid_disk_page_default)); 3980 memcpy(&lun->mode_pages.rigid_disk_page[ 3981 CTL_PAGE_SAVED], &rigid_disk_page_default, 3982 sizeof(rigid_disk_page_default)); 3983 3984 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3985 CTL_DEFAULT_HEADS; 3986 3987 /* 3988 * The divide method here will be more accurate, 3989 * probably, but results in floating point being 3990 * used in the kernel on i386 (__udivdi3()). On the 3991 * XScale, though, __udivdi3() is implemented in 3992 * software. 3993 * 3994 * The shift method for cylinder calculation is 3995 * accurate if sectors_per_cylinder is a power of 3996 * 2. Otherwise it might be slightly off -- you 3997 * might have a bit of a truncation problem. 3998 */ 3999 #ifdef __XSCALE__ 4000 cylinders = (lun->be_lun->maxlba + 1) / 4001 sectors_per_cylinder; 4002 #else 4003 for (shift = 31; shift > 0; shift--) { 4004 if (sectors_per_cylinder & (1 << shift)) 4005 break; 4006 } 4007 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4008 #endif 4009 4010 /* 4011 * We've basically got 3 bytes, or 24 bits for the 4012 * cylinder size in the mode page. If we're over, 4013 * just round down to 2^24. 4014 */ 4015 if (cylinders > 0xffffff) 4016 cylinders = 0xffffff; 4017 4018 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4019 CTL_PAGE_CURRENT]; 4020 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4021 4022 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4023 CTL_PAGE_DEFAULT]; 4024 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4025 4026 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4027 CTL_PAGE_SAVED]; 4028 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4029 4030 page_index->page_data = 4031 (uint8_t *)lun->mode_pages.rigid_disk_page; 4032 break; 4033 } 4034 case SMS_CACHING_PAGE: { 4035 4036 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4037 panic("invalid subpage value %d", 4038 page_index->subpage); 4039 /* 4040 * Defaults should be okay here, no calculations 4041 * needed. 4042 */ 4043 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4044 &caching_page_default, 4045 sizeof(caching_page_default)); 4046 memcpy(&lun->mode_pages.caching_page[ 4047 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4048 sizeof(caching_page_changeable)); 4049 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4050 &caching_page_default, 4051 sizeof(caching_page_default)); 4052 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4053 &caching_page_default, 4054 sizeof(caching_page_default)); 4055 page_index->page_data = 4056 (uint8_t *)lun->mode_pages.caching_page; 4057 break; 4058 } 4059 case SMS_CONTROL_MODE_PAGE: { 4060 4061 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4062 panic("invalid subpage value %d", 4063 page_index->subpage); 4064 4065 /* 4066 * Defaults should be okay here, no calculations 4067 * needed. 4068 */ 4069 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4070 &control_page_default, 4071 sizeof(control_page_default)); 4072 memcpy(&lun->mode_pages.control_page[ 4073 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4074 sizeof(control_page_changeable)); 4075 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4076 &control_page_default, 4077 sizeof(control_page_default)); 4078 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4079 &control_page_default, 4080 sizeof(control_page_default)); 4081 page_index->page_data = 4082 (uint8_t *)lun->mode_pages.control_page; 4083 break; 4084 4085 } 4086 case SMS_VENDOR_SPECIFIC_PAGE:{ 4087 switch (page_index->subpage) { 4088 case PWR_SUBPAGE_CODE: { 4089 struct copan_power_subpage *current_page, 4090 *saved_page; 4091 4092 memcpy(&lun->mode_pages.power_subpage[ 4093 CTL_PAGE_CURRENT], 4094 &power_page_default, 4095 sizeof(power_page_default)); 4096 memcpy(&lun->mode_pages.power_subpage[ 4097 CTL_PAGE_CHANGEABLE], 4098 &power_page_changeable, 4099 sizeof(power_page_changeable)); 4100 memcpy(&lun->mode_pages.power_subpage[ 4101 CTL_PAGE_DEFAULT], 4102 &power_page_default, 4103 sizeof(power_page_default)); 4104 memcpy(&lun->mode_pages.power_subpage[ 4105 CTL_PAGE_SAVED], 4106 &power_page_default, 4107 sizeof(power_page_default)); 4108 page_index->page_data = 4109 (uint8_t *)lun->mode_pages.power_subpage; 4110 4111 current_page = (struct copan_power_subpage *) 4112 (page_index->page_data + 4113 (page_index->page_len * 4114 CTL_PAGE_CURRENT)); 4115 saved_page = (struct copan_power_subpage *) 4116 (page_index->page_data + 4117 (page_index->page_len * 4118 CTL_PAGE_SAVED)); 4119 break; 4120 } 4121 case APS_SUBPAGE_CODE: { 4122 struct copan_aps_subpage *current_page, 4123 *saved_page; 4124 4125 // This gets set multiple times but 4126 // it should always be the same. It's 4127 // only done during init so who cares. 4128 index_to_aps_page = i; 4129 4130 memcpy(&lun->mode_pages.aps_subpage[ 4131 CTL_PAGE_CURRENT], 4132 &aps_page_default, 4133 sizeof(aps_page_default)); 4134 memcpy(&lun->mode_pages.aps_subpage[ 4135 CTL_PAGE_CHANGEABLE], 4136 &aps_page_changeable, 4137 sizeof(aps_page_changeable)); 4138 memcpy(&lun->mode_pages.aps_subpage[ 4139 CTL_PAGE_DEFAULT], 4140 &aps_page_default, 4141 sizeof(aps_page_default)); 4142 memcpy(&lun->mode_pages.aps_subpage[ 4143 CTL_PAGE_SAVED], 4144 &aps_page_default, 4145 sizeof(aps_page_default)); 4146 page_index->page_data = 4147 (uint8_t *)lun->mode_pages.aps_subpage; 4148 4149 current_page = (struct copan_aps_subpage *) 4150 (page_index->page_data + 4151 (page_index->page_len * 4152 CTL_PAGE_CURRENT)); 4153 saved_page = (struct copan_aps_subpage *) 4154 (page_index->page_data + 4155 (page_index->page_len * 4156 CTL_PAGE_SAVED)); 4157 break; 4158 } 4159 case DBGCNF_SUBPAGE_CODE: { 4160 struct copan_debugconf_subpage *current_page, 4161 *saved_page; 4162 4163 memcpy(&lun->mode_pages.debugconf_subpage[ 4164 CTL_PAGE_CURRENT], 4165 &debugconf_page_default, 4166 sizeof(debugconf_page_default)); 4167 memcpy(&lun->mode_pages.debugconf_subpage[ 4168 CTL_PAGE_CHANGEABLE], 4169 &debugconf_page_changeable, 4170 sizeof(debugconf_page_changeable)); 4171 memcpy(&lun->mode_pages.debugconf_subpage[ 4172 CTL_PAGE_DEFAULT], 4173 &debugconf_page_default, 4174 sizeof(debugconf_page_default)); 4175 memcpy(&lun->mode_pages.debugconf_subpage[ 4176 CTL_PAGE_SAVED], 4177 &debugconf_page_default, 4178 sizeof(debugconf_page_default)); 4179 page_index->page_data = 4180 (uint8_t *)lun->mode_pages.debugconf_subpage; 4181 4182 current_page = (struct copan_debugconf_subpage *) 4183 (page_index->page_data + 4184 (page_index->page_len * 4185 CTL_PAGE_CURRENT)); 4186 saved_page = (struct copan_debugconf_subpage *) 4187 (page_index->page_data + 4188 (page_index->page_len * 4189 CTL_PAGE_SAVED)); 4190 break; 4191 } 4192 default: 4193 panic("invalid subpage value %d", 4194 page_index->subpage); 4195 break; 4196 } 4197 break; 4198 } 4199 default: 4200 panic("invalid page value %d", 4201 page_index->page_code & SMPH_PC_MASK); 4202 break; 4203 } 4204 } 4205 4206 return (CTL_RETVAL_COMPLETE); 4207 } 4208 4209 /* 4210 * LUN allocation. 4211 * 4212 * Requirements: 4213 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4214 * wants us to allocate the LUN and he can block. 4215 * - ctl_softc is always set 4216 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4217 * 4218 * Returns 0 for success, non-zero (errno) for failure. 4219 */ 4220 static int 4221 ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4222 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4223 { 4224 struct ctl_lun *nlun, *lun; 4225 struct ctl_frontend *fe; 4226 int lun_number, i, lun_malloced; 4227 4228 if (be_lun == NULL) 4229 return (EINVAL); 4230 4231 /* 4232 * We currently only support Direct Access or Processor LUN types. 4233 */ 4234 switch (be_lun->lun_type) { 4235 case T_DIRECT: 4236 break; 4237 case T_PROCESSOR: 4238 break; 4239 case T_SEQUENTIAL: 4240 case T_CHANGER: 4241 default: 4242 be_lun->lun_config_status(be_lun->be_lun, 4243 CTL_LUN_CONFIG_FAILURE); 4244 break; 4245 } 4246 if (ctl_lun == NULL) { 4247 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4248 lun_malloced = 1; 4249 } else { 4250 lun_malloced = 0; 4251 lun = ctl_lun; 4252 } 4253 4254 memset(lun, 0, sizeof(*lun)); 4255 if (lun_malloced) 4256 lun->flags = CTL_LUN_MALLOCED; 4257 4258 mtx_lock(&ctl_softc->ctl_lock); 4259 /* 4260 * See if the caller requested a particular LUN number. If so, see 4261 * if it is available. Otherwise, allocate the first available LUN. 4262 */ 4263 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4264 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4265 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4266 mtx_unlock(&ctl_softc->ctl_lock); 4267 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4268 printf("ctl: requested LUN ID %d is higher " 4269 "than CTL_MAX_LUNS - 1 (%d)\n", 4270 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4271 } else { 4272 /* 4273 * XXX KDM return an error, or just assign 4274 * another LUN ID in this case?? 4275 */ 4276 printf("ctl: requested LUN ID %d is already " 4277 "in use\n", be_lun->req_lun_id); 4278 } 4279 if (lun->flags & CTL_LUN_MALLOCED) 4280 free(lun, M_CTL); 4281 be_lun->lun_config_status(be_lun->be_lun, 4282 CTL_LUN_CONFIG_FAILURE); 4283 return (ENOSPC); 4284 } 4285 lun_number = be_lun->req_lun_id; 4286 } else { 4287 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4288 if (lun_number == -1) { 4289 mtx_unlock(&ctl_softc->ctl_lock); 4290 printf("ctl: can't allocate LUN on target %ju, out of " 4291 "LUNs\n", (uintmax_t)target_id.id); 4292 if (lun->flags & CTL_LUN_MALLOCED) 4293 free(lun, M_CTL); 4294 be_lun->lun_config_status(be_lun->be_lun, 4295 CTL_LUN_CONFIG_FAILURE); 4296 return (ENOSPC); 4297 } 4298 } 4299 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4300 4301 lun->target = target_id; 4302 lun->lun = lun_number; 4303 lun->be_lun = be_lun; 4304 /* 4305 * The processor LUN is always enabled. Disk LUNs come on line 4306 * disabled, and must be enabled by the backend. 4307 */ 4308 lun->flags |= CTL_LUN_DISABLED; 4309 lun->backend = be_lun->be; 4310 be_lun->ctl_lun = lun; 4311 be_lun->lun_id = lun_number; 4312 atomic_add_int(&be_lun->be->num_luns, 1); 4313 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4314 lun->flags |= CTL_LUN_STOPPED; 4315 4316 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4317 lun->flags |= CTL_LUN_INOPERABLE; 4318 4319 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4320 lun->flags |= CTL_LUN_PRIMARY_SC; 4321 4322 lun->ctl_softc = ctl_softc; 4323 TAILQ_INIT(&lun->ooa_queue); 4324 TAILQ_INIT(&lun->blocked_queue); 4325 STAILQ_INIT(&lun->error_list); 4326 4327 /* 4328 * Initialize the mode page index. 4329 */ 4330 ctl_init_page_index(lun); 4331 4332 /* 4333 * Set the poweron UA for all initiators on this LUN only. 4334 */ 4335 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4336 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4337 4338 /* 4339 * Now, before we insert this lun on the lun list, set the lun 4340 * inventory changed UA for all other luns. 4341 */ 4342 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4343 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4344 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4345 } 4346 } 4347 4348 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4349 4350 ctl_softc->ctl_luns[lun_number] = lun; 4351 4352 ctl_softc->num_luns++; 4353 4354 /* Setup statistics gathering */ 4355 lun->stats.device_type = be_lun->lun_type; 4356 lun->stats.lun_number = lun_number; 4357 if (lun->stats.device_type == T_DIRECT) 4358 lun->stats.blocksize = be_lun->blocksize; 4359 else 4360 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4361 for (i = 0;i < CTL_MAX_PORTS;i++) 4362 lun->stats.ports[i].targ_port = i; 4363 4364 mtx_unlock(&ctl_softc->ctl_lock); 4365 4366 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4367 4368 /* 4369 * Run through each registered FETD and bring it online if it isn't 4370 * already. Enable the target ID if it hasn't been enabled, and 4371 * enable this particular LUN. 4372 */ 4373 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4374 int retval; 4375 4376 /* 4377 * XXX KDM this only works for ONE TARGET ID. We'll need 4378 * to do things differently if we go to a multiple target 4379 * ID scheme. 4380 */ 4381 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4382 4383 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4384 if (retval != 0) { 4385 printf("ctl_alloc_lun: FETD %s port %d " 4386 "returned error %d for targ_enable on " 4387 "target %ju\n", fe->port_name, 4388 fe->targ_port, retval, 4389 (uintmax_t)target_id.id); 4390 } else 4391 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4392 } 4393 4394 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4395 if (retval != 0) { 4396 printf("ctl_alloc_lun: FETD %s port %d returned error " 4397 "%d for lun_enable on target %ju lun %d\n", 4398 fe->port_name, fe->targ_port, retval, 4399 (uintmax_t)target_id.id, lun_number); 4400 } else 4401 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4402 } 4403 return (0); 4404 } 4405 4406 /* 4407 * Delete a LUN. 4408 * Assumptions: 4409 * - caller holds ctl_softc->ctl_lock. 4410 * - LUN has already been marked invalid and any pending I/O has been taken 4411 * care of. 4412 */ 4413 static int 4414 ctl_free_lun(struct ctl_lun *lun) 4415 { 4416 struct ctl_softc *softc; 4417 #if 0 4418 struct ctl_frontend *fe; 4419 #endif 4420 struct ctl_lun *nlun; 4421 union ctl_io *io, *next_io; 4422 int i; 4423 4424 softc = lun->ctl_softc; 4425 4426 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4427 4428 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4429 4430 softc->ctl_luns[lun->lun] = NULL; 4431 4432 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4433 printf("ctl_free_lun: aieee!! freeing a LUN with " 4434 "outstanding I/O!!\n"); 4435 } 4436 4437 /* 4438 * If we have anything pending on the RtR queue, remove it. 4439 */ 4440 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4441 io = next_io) { 4442 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4443 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4444 && (io->io_hdr.nexus.targ_lun == lun->lun)) 4445 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4446 ctl_io_hdr, links); 4447 } 4448 4449 /* 4450 * Then remove everything from the blocked queue. 4451 */ 4452 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4453 io = next_io) { 4454 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4455 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4456 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4457 } 4458 4459 /* 4460 * Now clear out the OOA queue, and free all the I/O. 4461 * XXX KDM should we notify the FETD here? We probably need to 4462 * quiesce the LUN before deleting it. 4463 */ 4464 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4465 io = next_io) { 4466 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4467 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4468 ctl_free_io_internal(io, /*have_lock*/ 1); 4469 } 4470 4471 softc->num_luns--; 4472 4473 /* 4474 * XXX KDM this scheme only works for a single target/multiple LUN 4475 * setup. It needs to be revamped for a multiple target scheme. 4476 * 4477 * XXX KDM this results in fe->lun_disable() getting called twice, 4478 * once when ctl_disable_lun() is called, and a second time here. 4479 * We really need to re-think the LUN disable semantics. There 4480 * should probably be several steps/levels to LUN removal: 4481 * - disable 4482 * - invalidate 4483 * - free 4484 * 4485 * Right now we only have a disable method when communicating to 4486 * the front end ports, at least for individual LUNs. 4487 */ 4488 #if 0 4489 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4490 int retval; 4491 4492 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4493 lun->lun); 4494 if (retval != 0) { 4495 printf("ctl_free_lun: FETD %s port %d returned error " 4496 "%d for lun_disable on target %ju lun %jd\n", 4497 fe->port_name, fe->targ_port, retval, 4498 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4499 } 4500 4501 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4502 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4503 4504 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4505 if (retval != 0) { 4506 printf("ctl_free_lun: FETD %s port %d " 4507 "returned error %d for targ_disable on " 4508 "target %ju\n", fe->port_name, 4509 fe->targ_port, retval, 4510 (uintmax_t)lun->target.id); 4511 } else 4512 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4513 4514 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4515 continue; 4516 4517 #if 0 4518 fe->port_offline(fe->onoff_arg); 4519 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4520 #endif 4521 } 4522 } 4523 #endif 4524 4525 /* 4526 * Tell the backend to free resources, if this LUN has a backend. 4527 */ 4528 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4529 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4530 4531 if (lun->flags & CTL_LUN_MALLOCED) 4532 free(lun, M_CTL); 4533 4534 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4535 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4536 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4537 } 4538 } 4539 4540 return (0); 4541 } 4542 4543 static void 4544 ctl_create_lun(struct ctl_be_lun *be_lun) 4545 { 4546 struct ctl_softc *ctl_softc; 4547 4548 ctl_softc = control_softc; 4549 4550 /* 4551 * ctl_alloc_lun() should handle all potential failure cases. 4552 */ 4553 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4554 } 4555 4556 int 4557 ctl_add_lun(struct ctl_be_lun *be_lun) 4558 { 4559 struct ctl_softc *ctl_softc; 4560 4561 ctl_softc = control_softc; 4562 4563 mtx_lock(&ctl_softc->ctl_lock); 4564 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4565 mtx_unlock(&ctl_softc->ctl_lock); 4566 4567 ctl_wakeup_thread(); 4568 4569 return (0); 4570 } 4571 4572 int 4573 ctl_enable_lun(struct ctl_be_lun *be_lun) 4574 { 4575 struct ctl_softc *ctl_softc; 4576 struct ctl_frontend *fe, *nfe; 4577 struct ctl_lun *lun; 4578 int retval; 4579 4580 ctl_softc = control_softc; 4581 4582 lun = (struct ctl_lun *)be_lun->ctl_lun; 4583 4584 mtx_lock(&ctl_softc->ctl_lock); 4585 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4586 /* 4587 * eh? Why did we get called if the LUN is already 4588 * enabled? 4589 */ 4590 mtx_unlock(&ctl_softc->ctl_lock); 4591 return (0); 4592 } 4593 lun->flags &= ~CTL_LUN_DISABLED; 4594 4595 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4596 nfe = STAILQ_NEXT(fe, links); 4597 4598 /* 4599 * Drop the lock while we call the FETD's enable routine. 4600 * This can lead to a callback into CTL (at least in the 4601 * case of the internal initiator frontend. 4602 */ 4603 mtx_unlock(&ctl_softc->ctl_lock); 4604 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4605 mtx_lock(&ctl_softc->ctl_lock); 4606 if (retval != 0) { 4607 printf("%s: FETD %s port %d returned error " 4608 "%d for lun_enable on target %ju lun %jd\n", 4609 __func__, fe->port_name, fe->targ_port, retval, 4610 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4611 } 4612 #if 0 4613 else { 4614 /* NOTE: TODO: why does lun enable affect port status? */ 4615 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4616 } 4617 #endif 4618 } 4619 4620 mtx_unlock(&ctl_softc->ctl_lock); 4621 4622 return (0); 4623 } 4624 4625 int 4626 ctl_disable_lun(struct ctl_be_lun *be_lun) 4627 { 4628 struct ctl_softc *ctl_softc; 4629 struct ctl_frontend *fe; 4630 struct ctl_lun *lun; 4631 int retval; 4632 4633 ctl_softc = control_softc; 4634 4635 lun = (struct ctl_lun *)be_lun->ctl_lun; 4636 4637 mtx_lock(&ctl_softc->ctl_lock); 4638 4639 if (lun->flags & CTL_LUN_DISABLED) { 4640 mtx_unlock(&ctl_softc->ctl_lock); 4641 return (0); 4642 } 4643 lun->flags |= CTL_LUN_DISABLED; 4644 4645 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4646 mtx_unlock(&ctl_softc->ctl_lock); 4647 /* 4648 * Drop the lock before we call the frontend's disable 4649 * routine, to avoid lock order reversals. 4650 * 4651 * XXX KDM what happens if the frontend list changes while 4652 * we're traversing it? It's unlikely, but should be handled. 4653 */ 4654 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4655 lun->lun); 4656 mtx_lock(&ctl_softc->ctl_lock); 4657 if (retval != 0) { 4658 printf("ctl_alloc_lun: FETD %s port %d returned error " 4659 "%d for lun_disable on target %ju lun %jd\n", 4660 fe->port_name, fe->targ_port, retval, 4661 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4662 } 4663 } 4664 4665 mtx_unlock(&ctl_softc->ctl_lock); 4666 4667 return (0); 4668 } 4669 4670 int 4671 ctl_start_lun(struct ctl_be_lun *be_lun) 4672 { 4673 struct ctl_softc *ctl_softc; 4674 struct ctl_lun *lun; 4675 4676 ctl_softc = control_softc; 4677 4678 lun = (struct ctl_lun *)be_lun->ctl_lun; 4679 4680 mtx_lock(&ctl_softc->ctl_lock); 4681 lun->flags &= ~CTL_LUN_STOPPED; 4682 mtx_unlock(&ctl_softc->ctl_lock); 4683 4684 return (0); 4685 } 4686 4687 int 4688 ctl_stop_lun(struct ctl_be_lun *be_lun) 4689 { 4690 struct ctl_softc *ctl_softc; 4691 struct ctl_lun *lun; 4692 4693 ctl_softc = control_softc; 4694 4695 lun = (struct ctl_lun *)be_lun->ctl_lun; 4696 4697 mtx_lock(&ctl_softc->ctl_lock); 4698 lun->flags |= CTL_LUN_STOPPED; 4699 mtx_unlock(&ctl_softc->ctl_lock); 4700 4701 return (0); 4702 } 4703 4704 int 4705 ctl_lun_offline(struct ctl_be_lun *be_lun) 4706 { 4707 struct ctl_softc *ctl_softc; 4708 struct ctl_lun *lun; 4709 4710 ctl_softc = control_softc; 4711 4712 lun = (struct ctl_lun *)be_lun->ctl_lun; 4713 4714 mtx_lock(&ctl_softc->ctl_lock); 4715 lun->flags |= CTL_LUN_OFFLINE; 4716 mtx_unlock(&ctl_softc->ctl_lock); 4717 4718 return (0); 4719 } 4720 4721 int 4722 ctl_lun_online(struct ctl_be_lun *be_lun) 4723 { 4724 struct ctl_softc *ctl_softc; 4725 struct ctl_lun *lun; 4726 4727 ctl_softc = control_softc; 4728 4729 lun = (struct ctl_lun *)be_lun->ctl_lun; 4730 4731 mtx_lock(&ctl_softc->ctl_lock); 4732 lun->flags &= ~CTL_LUN_OFFLINE; 4733 mtx_unlock(&ctl_softc->ctl_lock); 4734 4735 return (0); 4736 } 4737 4738 int 4739 ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4740 { 4741 struct ctl_softc *ctl_softc; 4742 struct ctl_lun *lun; 4743 4744 ctl_softc = control_softc; 4745 4746 lun = (struct ctl_lun *)be_lun->ctl_lun; 4747 4748 mtx_lock(&ctl_softc->ctl_lock); 4749 4750 /* 4751 * The LUN needs to be disabled before it can be marked invalid. 4752 */ 4753 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4754 mtx_unlock(&ctl_softc->ctl_lock); 4755 return (-1); 4756 } 4757 /* 4758 * Mark the LUN invalid. 4759 */ 4760 lun->flags |= CTL_LUN_INVALID; 4761 4762 /* 4763 * If there is nothing in the OOA queue, go ahead and free the LUN. 4764 * If we have something in the OOA queue, we'll free it when the 4765 * last I/O completes. 4766 */ 4767 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4768 ctl_free_lun(lun); 4769 mtx_unlock(&ctl_softc->ctl_lock); 4770 4771 return (0); 4772 } 4773 4774 int 4775 ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4776 { 4777 struct ctl_softc *ctl_softc; 4778 struct ctl_lun *lun; 4779 4780 ctl_softc = control_softc; 4781 lun = (struct ctl_lun *)be_lun->ctl_lun; 4782 4783 mtx_lock(&ctl_softc->ctl_lock); 4784 lun->flags |= CTL_LUN_INOPERABLE; 4785 mtx_unlock(&ctl_softc->ctl_lock); 4786 4787 return (0); 4788 } 4789 4790 int 4791 ctl_lun_operable(struct ctl_be_lun *be_lun) 4792 { 4793 struct ctl_softc *ctl_softc; 4794 struct ctl_lun *lun; 4795 4796 ctl_softc = control_softc; 4797 lun = (struct ctl_lun *)be_lun->ctl_lun; 4798 4799 mtx_lock(&ctl_softc->ctl_lock); 4800 lun->flags &= ~CTL_LUN_INOPERABLE; 4801 mtx_unlock(&ctl_softc->ctl_lock); 4802 4803 return (0); 4804 } 4805 4806 int 4807 ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4808 int lock) 4809 { 4810 struct ctl_softc *softc; 4811 struct ctl_lun *lun; 4812 struct copan_aps_subpage *current_sp; 4813 struct ctl_page_index *page_index; 4814 int i; 4815 4816 softc = control_softc; 4817 4818 mtx_lock(&softc->ctl_lock); 4819 4820 lun = (struct ctl_lun *)be_lun->ctl_lun; 4821 4822 page_index = NULL; 4823 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4824 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4825 APS_PAGE_CODE) 4826 continue; 4827 4828 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4829 continue; 4830 page_index = &lun->mode_pages.index[i]; 4831 } 4832 4833 if (page_index == NULL) { 4834 mtx_unlock(&softc->ctl_lock); 4835 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4836 (uintmax_t)lun->lun); 4837 return (1); 4838 } 4839 #if 0 4840 if ((softc->aps_locked_lun != 0) 4841 && (softc->aps_locked_lun != lun->lun)) { 4842 printf("%s: attempt to lock LUN %llu when %llu is already " 4843 "locked\n"); 4844 mtx_unlock(&softc->ctl_lock); 4845 return (1); 4846 } 4847 #endif 4848 4849 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4850 (page_index->page_len * CTL_PAGE_CURRENT)); 4851 4852 if (lock != 0) { 4853 current_sp->lock_active = APS_LOCK_ACTIVE; 4854 softc->aps_locked_lun = lun->lun; 4855 } else { 4856 current_sp->lock_active = 0; 4857 softc->aps_locked_lun = 0; 4858 } 4859 4860 4861 /* 4862 * If we're in HA mode, try to send the lock message to the other 4863 * side. 4864 */ 4865 if (ctl_is_single == 0) { 4866 int isc_retval; 4867 union ctl_ha_msg lock_msg; 4868 4869 lock_msg.hdr.nexus = *nexus; 4870 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4871 if (lock != 0) 4872 lock_msg.aps.lock_flag = 1; 4873 else 4874 lock_msg.aps.lock_flag = 0; 4875 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4876 sizeof(lock_msg), 0); 4877 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4878 printf("%s: APS (lock=%d) error returned from " 4879 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4880 mtx_unlock(&softc->ctl_lock); 4881 return (1); 4882 } 4883 } 4884 4885 mtx_unlock(&softc->ctl_lock); 4886 4887 return (0); 4888 } 4889 4890 void 4891 ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4892 { 4893 struct ctl_lun *lun; 4894 struct ctl_softc *softc; 4895 int i; 4896 4897 softc = control_softc; 4898 4899 mtx_lock(&softc->ctl_lock); 4900 4901 lun = (struct ctl_lun *)be_lun->ctl_lun; 4902 4903 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4904 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4905 4906 mtx_unlock(&softc->ctl_lock); 4907 } 4908 4909 /* 4910 * Backend "memory move is complete" callback for requests that never 4911 * make it down to say RAIDCore's configuration code. 4912 */ 4913 int 4914 ctl_config_move_done(union ctl_io *io) 4915 { 4916 int retval; 4917 4918 retval = CTL_RETVAL_COMPLETE; 4919 4920 4921 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4922 /* 4923 * XXX KDM this shouldn't happen, but what if it does? 4924 */ 4925 if (io->io_hdr.io_type != CTL_IO_SCSI) 4926 panic("I/O type isn't CTL_IO_SCSI!"); 4927 4928 if ((io->io_hdr.port_status == 0) 4929 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4930 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4931 io->io_hdr.status = CTL_SUCCESS; 4932 else if ((io->io_hdr.port_status != 0) 4933 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4934 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4935 /* 4936 * For hardware error sense keys, the sense key 4937 * specific value is defined to be a retry count, 4938 * but we use it to pass back an internal FETD 4939 * error code. XXX KDM Hopefully the FETD is only 4940 * using 16 bits for an error code, since that's 4941 * all the space we have in the sks field. 4942 */ 4943 ctl_set_internal_failure(&io->scsiio, 4944 /*sks_valid*/ 1, 4945 /*retry_count*/ 4946 io->io_hdr.port_status); 4947 free(io->scsiio.kern_data_ptr, M_CTL); 4948 ctl_done(io); 4949 goto bailout; 4950 } 4951 4952 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4953 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4954 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4955 /* 4956 * XXX KDM just assuming a single pointer here, and not a 4957 * S/G list. If we start using S/G lists for config data, 4958 * we'll need to know how to clean them up here as well. 4959 */ 4960 free(io->scsiio.kern_data_ptr, M_CTL); 4961 /* Hopefully the user has already set the status... */ 4962 ctl_done(io); 4963 } else { 4964 /* 4965 * XXX KDM now we need to continue data movement. Some 4966 * options: 4967 * - call ctl_scsiio() again? We don't do this for data 4968 * writes, because for those at least we know ahead of 4969 * time where the write will go and how long it is. For 4970 * config writes, though, that information is largely 4971 * contained within the write itself, thus we need to 4972 * parse out the data again. 4973 * 4974 * - Call some other function once the data is in? 4975 */ 4976 4977 /* 4978 * XXX KDM call ctl_scsiio() again for now, and check flag 4979 * bits to see whether we're allocated or not. 4980 */ 4981 retval = ctl_scsiio(&io->scsiio); 4982 } 4983 bailout: 4984 return (retval); 4985 } 4986 4987 /* 4988 * This gets called by a backend driver when it is done with a 4989 * configuration write. 4990 */ 4991 void 4992 ctl_config_write_done(union ctl_io *io) 4993 { 4994 /* 4995 * If the IO_CONT flag is set, we need to call the supplied 4996 * function to continue processing the I/O, instead of completing 4997 * the I/O just yet. 4998 * 4999 * If there is an error, though, we don't want to keep processing. 5000 * Instead, just send status back to the initiator. 5001 */ 5002 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5003 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5004 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5005 io->scsiio.io_cont(io); 5006 return; 5007 } 5008 /* 5009 * Since a configuration write can be done for commands that actually 5010 * have data allocated, like write buffer, and commands that have 5011 * no data, like start/stop unit, we need to check here. 5012 */ 5013 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5014 free(io->scsiio.kern_data_ptr, M_CTL); 5015 ctl_done(io); 5016 } 5017 5018 /* 5019 * SCSI release command. 5020 */ 5021 int 5022 ctl_scsi_release(struct ctl_scsiio *ctsio) 5023 { 5024 int length, longid, thirdparty_id, resv_id; 5025 struct ctl_softc *ctl_softc; 5026 struct ctl_lun *lun; 5027 5028 length = 0; 5029 resv_id = 0; 5030 5031 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5032 5033 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5034 ctl_softc = control_softc; 5035 5036 switch (ctsio->cdb[0]) { 5037 case RELEASE: { 5038 struct scsi_release *cdb; 5039 5040 cdb = (struct scsi_release *)ctsio->cdb; 5041 if ((cdb->byte2 & 0x1f) != 0) { 5042 ctl_set_invalid_field(ctsio, 5043 /*sks_valid*/ 1, 5044 /*command*/ 1, 5045 /*field*/ 1, 5046 /*bit_valid*/ 0, 5047 /*bit*/ 0); 5048 ctl_done((union ctl_io *)ctsio); 5049 return (CTL_RETVAL_COMPLETE); 5050 } 5051 break; 5052 } 5053 case RELEASE_10: { 5054 struct scsi_release_10 *cdb; 5055 5056 cdb = (struct scsi_release_10 *)ctsio->cdb; 5057 5058 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5059 ctl_set_invalid_field(ctsio, 5060 /*sks_valid*/ 1, 5061 /*command*/ 1, 5062 /*field*/ 1, 5063 /*bit_valid*/ 1, 5064 /*bit*/ 0); 5065 ctl_done((union ctl_io *)ctsio); 5066 return (CTL_RETVAL_COMPLETE); 5067 5068 } 5069 5070 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5071 ctl_set_invalid_field(ctsio, 5072 /*sks_valid*/ 1, 5073 /*command*/ 1, 5074 /*field*/ 1, 5075 /*bit_valid*/ 1, 5076 /*bit*/ 4); 5077 ctl_done((union ctl_io *)ctsio); 5078 return (CTL_RETVAL_COMPLETE); 5079 } 5080 5081 if (cdb->byte2 & SR10_LONGID) 5082 longid = 1; 5083 else 5084 thirdparty_id = cdb->thirdparty_id; 5085 5086 resv_id = cdb->resv_id; 5087 length = scsi_2btoul(cdb->length); 5088 break; 5089 } 5090 } 5091 5092 5093 /* 5094 * XXX KDM right now, we only support LUN reservation. We don't 5095 * support 3rd party reservations, or extent reservations, which 5096 * might actually need the parameter list. If we've gotten this 5097 * far, we've got a LUN reservation. Anything else got kicked out 5098 * above. So, according to SPC, ignore the length. 5099 */ 5100 length = 0; 5101 5102 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5103 && (length > 0)) { 5104 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5105 ctsio->kern_data_len = length; 5106 ctsio->kern_total_len = length; 5107 ctsio->kern_data_resid = 0; 5108 ctsio->kern_rel_offset = 0; 5109 ctsio->kern_sg_entries = 0; 5110 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5111 ctsio->be_move_done = ctl_config_move_done; 5112 ctl_datamove((union ctl_io *)ctsio); 5113 5114 return (CTL_RETVAL_COMPLETE); 5115 } 5116 5117 if (length > 0) 5118 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5119 5120 mtx_lock(&ctl_softc->ctl_lock); 5121 5122 /* 5123 * According to SPC, it is not an error for an intiator to attempt 5124 * to release a reservation on a LUN that isn't reserved, or that 5125 * is reserved by another initiator. The reservation can only be 5126 * released, though, by the initiator who made it or by one of 5127 * several reset type events. 5128 */ 5129 if (lun->flags & CTL_LUN_RESERVED) { 5130 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5131 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5132 && (ctsio->io_hdr.nexus.targ_target.id == 5133 lun->rsv_nexus.targ_target.id)) { 5134 lun->flags &= ~CTL_LUN_RESERVED; 5135 } 5136 } 5137 5138 ctsio->scsi_status = SCSI_STATUS_OK; 5139 ctsio->io_hdr.status = CTL_SUCCESS; 5140 5141 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5142 free(ctsio->kern_data_ptr, M_CTL); 5143 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5144 } 5145 5146 mtx_unlock(&ctl_softc->ctl_lock); 5147 5148 ctl_done((union ctl_io *)ctsio); 5149 return (CTL_RETVAL_COMPLETE); 5150 } 5151 5152 int 5153 ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5154 { 5155 int extent, thirdparty, longid; 5156 int resv_id, length; 5157 uint64_t thirdparty_id; 5158 struct ctl_softc *ctl_softc; 5159 struct ctl_lun *lun; 5160 5161 extent = 0; 5162 thirdparty = 0; 5163 longid = 0; 5164 resv_id = 0; 5165 length = 0; 5166 thirdparty_id = 0; 5167 5168 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5169 5170 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5171 ctl_softc = control_softc; 5172 5173 switch (ctsio->cdb[0]) { 5174 case RESERVE: { 5175 struct scsi_reserve *cdb; 5176 5177 cdb = (struct scsi_reserve *)ctsio->cdb; 5178 if ((cdb->byte2 & 0x1f) != 0) { 5179 ctl_set_invalid_field(ctsio, 5180 /*sks_valid*/ 1, 5181 /*command*/ 1, 5182 /*field*/ 1, 5183 /*bit_valid*/ 0, 5184 /*bit*/ 0); 5185 ctl_done((union ctl_io *)ctsio); 5186 return (CTL_RETVAL_COMPLETE); 5187 } 5188 resv_id = cdb->resv_id; 5189 length = scsi_2btoul(cdb->length); 5190 break; 5191 } 5192 case RESERVE_10: { 5193 struct scsi_reserve_10 *cdb; 5194 5195 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5196 5197 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5198 ctl_set_invalid_field(ctsio, 5199 /*sks_valid*/ 1, 5200 /*command*/ 1, 5201 /*field*/ 1, 5202 /*bit_valid*/ 1, 5203 /*bit*/ 0); 5204 ctl_done((union ctl_io *)ctsio); 5205 return (CTL_RETVAL_COMPLETE); 5206 } 5207 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5208 ctl_set_invalid_field(ctsio, 5209 /*sks_valid*/ 1, 5210 /*command*/ 1, 5211 /*field*/ 1, 5212 /*bit_valid*/ 1, 5213 /*bit*/ 4); 5214 ctl_done((union ctl_io *)ctsio); 5215 return (CTL_RETVAL_COMPLETE); 5216 } 5217 if (cdb->byte2 & SR10_LONGID) 5218 longid = 1; 5219 else 5220 thirdparty_id = cdb->thirdparty_id; 5221 5222 resv_id = cdb->resv_id; 5223 length = scsi_2btoul(cdb->length); 5224 break; 5225 } 5226 } 5227 5228 /* 5229 * XXX KDM right now, we only support LUN reservation. We don't 5230 * support 3rd party reservations, or extent reservations, which 5231 * might actually need the parameter list. If we've gotten this 5232 * far, we've got a LUN reservation. Anything else got kicked out 5233 * above. So, according to SPC, ignore the length. 5234 */ 5235 length = 0; 5236 5237 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5238 && (length > 0)) { 5239 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5240 ctsio->kern_data_len = length; 5241 ctsio->kern_total_len = length; 5242 ctsio->kern_data_resid = 0; 5243 ctsio->kern_rel_offset = 0; 5244 ctsio->kern_sg_entries = 0; 5245 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5246 ctsio->be_move_done = ctl_config_move_done; 5247 ctl_datamove((union ctl_io *)ctsio); 5248 5249 return (CTL_RETVAL_COMPLETE); 5250 } 5251 5252 if (length > 0) 5253 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5254 5255 mtx_lock(&ctl_softc->ctl_lock); 5256 if (lun->flags & CTL_LUN_RESERVED) { 5257 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5258 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5259 || (ctsio->io_hdr.nexus.targ_target.id != 5260 lun->rsv_nexus.targ_target.id)) { 5261 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5262 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5263 goto bailout; 5264 } 5265 } 5266 5267 lun->flags |= CTL_LUN_RESERVED; 5268 lun->rsv_nexus = ctsio->io_hdr.nexus; 5269 5270 ctsio->scsi_status = SCSI_STATUS_OK; 5271 ctsio->io_hdr.status = CTL_SUCCESS; 5272 5273 bailout: 5274 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5275 free(ctsio->kern_data_ptr, M_CTL); 5276 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5277 } 5278 5279 mtx_unlock(&ctl_softc->ctl_lock); 5280 5281 ctl_done((union ctl_io *)ctsio); 5282 return (CTL_RETVAL_COMPLETE); 5283 } 5284 5285 int 5286 ctl_start_stop(struct ctl_scsiio *ctsio) 5287 { 5288 struct scsi_start_stop_unit *cdb; 5289 struct ctl_lun *lun; 5290 struct ctl_softc *ctl_softc; 5291 int retval; 5292 5293 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5294 5295 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5296 ctl_softc = control_softc; 5297 retval = 0; 5298 5299 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5300 5301 /* 5302 * XXX KDM 5303 * We don't support the immediate bit on a stop unit. In order to 5304 * do that, we would need to code up a way to know that a stop is 5305 * pending, and hold off any new commands until it completes, one 5306 * way or another. Then we could accept or reject those commands 5307 * depending on its status. We would almost need to do the reverse 5308 * of what we do below for an immediate start -- return the copy of 5309 * the ctl_io to the FETD with status to send to the host (and to 5310 * free the copy!) and then free the original I/O once the stop 5311 * actually completes. That way, the OOA queue mechanism can work 5312 * to block commands that shouldn't proceed. Another alternative 5313 * would be to put the copy in the queue in place of the original, 5314 * and return the original back to the caller. That could be 5315 * slightly safer.. 5316 */ 5317 if ((cdb->byte2 & SSS_IMMED) 5318 && ((cdb->how & SSS_START) == 0)) { 5319 ctl_set_invalid_field(ctsio, 5320 /*sks_valid*/ 1, 5321 /*command*/ 1, 5322 /*field*/ 1, 5323 /*bit_valid*/ 1, 5324 /*bit*/ 0); 5325 ctl_done((union ctl_io *)ctsio); 5326 return (CTL_RETVAL_COMPLETE); 5327 } 5328 5329 /* 5330 * We don't support the power conditions field. We need to check 5331 * this prior to checking the load/eject and start/stop bits. 5332 */ 5333 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5334 ctl_set_invalid_field(ctsio, 5335 /*sks_valid*/ 1, 5336 /*command*/ 1, 5337 /*field*/ 4, 5338 /*bit_valid*/ 1, 5339 /*bit*/ 4); 5340 ctl_done((union ctl_io *)ctsio); 5341 return (CTL_RETVAL_COMPLETE); 5342 } 5343 5344 /* 5345 * Media isn't removable, so we can't load or eject it. 5346 */ 5347 if ((cdb->how & SSS_LOEJ) != 0) { 5348 ctl_set_invalid_field(ctsio, 5349 /*sks_valid*/ 1, 5350 /*command*/ 1, 5351 /*field*/ 4, 5352 /*bit_valid*/ 1, 5353 /*bit*/ 1); 5354 ctl_done((union ctl_io *)ctsio); 5355 return (CTL_RETVAL_COMPLETE); 5356 } 5357 5358 if ((lun->flags & CTL_LUN_PR_RESERVED) 5359 && ((cdb->how & SSS_START)==0)) { 5360 uint32_t residx; 5361 5362 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5363 if (!lun->per_res[residx].registered 5364 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5365 5366 ctl_set_reservation_conflict(ctsio); 5367 ctl_done((union ctl_io *)ctsio); 5368 return (CTL_RETVAL_COMPLETE); 5369 } 5370 } 5371 5372 /* 5373 * If there is no backend on this device, we can't start or stop 5374 * it. In theory we shouldn't get any start/stop commands in the 5375 * first place at this level if the LUN doesn't have a backend. 5376 * That should get stopped by the command decode code. 5377 */ 5378 if (lun->backend == NULL) { 5379 ctl_set_invalid_opcode(ctsio); 5380 ctl_done((union ctl_io *)ctsio); 5381 return (CTL_RETVAL_COMPLETE); 5382 } 5383 5384 /* 5385 * XXX KDM Copan-specific offline behavior. 5386 * Figure out a reasonable way to port this? 5387 */ 5388 #ifdef NEEDTOPORT 5389 mtx_lock(&ctl_softc->ctl_lock); 5390 5391 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5392 && (lun->flags & CTL_LUN_OFFLINE)) { 5393 /* 5394 * If the LUN is offline, and the on/offline bit isn't set, 5395 * reject the start or stop. Otherwise, let it through. 5396 */ 5397 mtx_unlock(&ctl_softc->ctl_lock); 5398 ctl_set_lun_not_ready(ctsio); 5399 ctl_done((union ctl_io *)ctsio); 5400 } else { 5401 mtx_unlock(&ctl_softc->ctl_lock); 5402 #endif /* NEEDTOPORT */ 5403 /* 5404 * This could be a start or a stop when we're online, 5405 * or a stop/offline or start/online. A start or stop when 5406 * we're offline is covered in the case above. 5407 */ 5408 /* 5409 * In the non-immediate case, we send the request to 5410 * the backend and return status to the user when 5411 * it is done. 5412 * 5413 * In the immediate case, we allocate a new ctl_io 5414 * to hold a copy of the request, and send that to 5415 * the backend. We then set good status on the 5416 * user's request and return it immediately. 5417 */ 5418 if (cdb->byte2 & SSS_IMMED) { 5419 union ctl_io *new_io; 5420 5421 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5422 if (new_io == NULL) { 5423 ctl_set_busy(ctsio); 5424 ctl_done((union ctl_io *)ctsio); 5425 } else { 5426 ctl_copy_io((union ctl_io *)ctsio, 5427 new_io); 5428 retval = lun->backend->config_write(new_io); 5429 ctl_set_success(ctsio); 5430 ctl_done((union ctl_io *)ctsio); 5431 } 5432 } else { 5433 retval = lun->backend->config_write( 5434 (union ctl_io *)ctsio); 5435 } 5436 #ifdef NEEDTOPORT 5437 } 5438 #endif 5439 return (retval); 5440 } 5441 5442 /* 5443 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5444 * we don't really do anything with the LBA and length fields if the user 5445 * passes them in. Instead we'll just flush out the cache for the entire 5446 * LUN. 5447 */ 5448 int 5449 ctl_sync_cache(struct ctl_scsiio *ctsio) 5450 { 5451 struct ctl_lun *lun; 5452 struct ctl_softc *ctl_softc; 5453 uint64_t starting_lba; 5454 uint32_t block_count; 5455 int reladr, immed; 5456 int retval; 5457 5458 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5459 5460 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5461 ctl_softc = control_softc; 5462 retval = 0; 5463 reladr = 0; 5464 immed = 0; 5465 5466 switch (ctsio->cdb[0]) { 5467 case SYNCHRONIZE_CACHE: { 5468 struct scsi_sync_cache *cdb; 5469 cdb = (struct scsi_sync_cache *)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_4btoul(cdb->begin_lba); 5478 block_count = scsi_2btoul(cdb->lb_count); 5479 break; 5480 } 5481 case SYNCHRONIZE_CACHE_16: { 5482 struct scsi_sync_cache_16 *cdb; 5483 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5484 5485 if (cdb->byte2 & SSC_RELADR) 5486 reladr = 1; 5487 5488 if (cdb->byte2 & SSC_IMMED) 5489 immed = 1; 5490 5491 starting_lba = scsi_8btou64(cdb->begin_lba); 5492 block_count = scsi_4btoul(cdb->lb_count); 5493 break; 5494 } 5495 default: 5496 ctl_set_invalid_opcode(ctsio); 5497 ctl_done((union ctl_io *)ctsio); 5498 goto bailout; 5499 break; /* NOTREACHED */ 5500 } 5501 5502 if (immed) { 5503 /* 5504 * We don't support the immediate bit. Since it's in the 5505 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5506 * commands, we can just return the same error in either 5507 * case. 5508 */ 5509 ctl_set_invalid_field(ctsio, 5510 /*sks_valid*/ 1, 5511 /*command*/ 1, 5512 /*field*/ 1, 5513 /*bit_valid*/ 1, 5514 /*bit*/ 1); 5515 ctl_done((union ctl_io *)ctsio); 5516 goto bailout; 5517 } 5518 5519 if (reladr) { 5520 /* 5521 * We don't support the reladr bit either. It can only be 5522 * used with linked commands, and we don't support linked 5523 * commands. Since the bit is in the same place for the 5524 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5525 * just return the same error in either case. 5526 */ 5527 ctl_set_invalid_field(ctsio, 5528 /*sks_valid*/ 1, 5529 /*command*/ 1, 5530 /*field*/ 1, 5531 /*bit_valid*/ 1, 5532 /*bit*/ 0); 5533 ctl_done((union ctl_io *)ctsio); 5534 goto bailout; 5535 } 5536 5537 /* 5538 * We check the LBA and length, but don't do anything with them. 5539 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5540 * get flushed. This check will just help satisfy anyone who wants 5541 * to see an error for an out of range LBA. 5542 */ 5543 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5544 ctl_set_lba_out_of_range(ctsio); 5545 ctl_done((union ctl_io *)ctsio); 5546 goto bailout; 5547 } 5548 5549 /* 5550 * If this LUN has no backend, we can't flush the cache anyway. 5551 */ 5552 if (lun->backend == NULL) { 5553 ctl_set_invalid_opcode(ctsio); 5554 ctl_done((union ctl_io *)ctsio); 5555 goto bailout; 5556 } 5557 5558 /* 5559 * Check to see whether we're configured to send the SYNCHRONIZE 5560 * CACHE command directly to the back end. 5561 */ 5562 mtx_lock(&ctl_softc->ctl_lock); 5563 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5564 && (++(lun->sync_count) >= lun->sync_interval)) { 5565 lun->sync_count = 0; 5566 mtx_unlock(&ctl_softc->ctl_lock); 5567 retval = lun->backend->config_write((union ctl_io *)ctsio); 5568 } else { 5569 mtx_unlock(&ctl_softc->ctl_lock); 5570 ctl_set_success(ctsio); 5571 ctl_done((union ctl_io *)ctsio); 5572 } 5573 5574 bailout: 5575 5576 return (retval); 5577 } 5578 5579 int 5580 ctl_format(struct ctl_scsiio *ctsio) 5581 { 5582 struct scsi_format *cdb; 5583 struct ctl_lun *lun; 5584 struct ctl_softc *ctl_softc; 5585 int length, defect_list_len; 5586 5587 CTL_DEBUG_PRINT(("ctl_format\n")); 5588 5589 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5590 ctl_softc = control_softc; 5591 5592 cdb = (struct scsi_format *)ctsio->cdb; 5593 5594 length = 0; 5595 if (cdb->byte2 & SF_FMTDATA) { 5596 if (cdb->byte2 & SF_LONGLIST) 5597 length = sizeof(struct scsi_format_header_long); 5598 else 5599 length = sizeof(struct scsi_format_header_short); 5600 } 5601 5602 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5603 && (length > 0)) { 5604 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5605 ctsio->kern_data_len = length; 5606 ctsio->kern_total_len = length; 5607 ctsio->kern_data_resid = 0; 5608 ctsio->kern_rel_offset = 0; 5609 ctsio->kern_sg_entries = 0; 5610 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5611 ctsio->be_move_done = ctl_config_move_done; 5612 ctl_datamove((union ctl_io *)ctsio); 5613 5614 return (CTL_RETVAL_COMPLETE); 5615 } 5616 5617 defect_list_len = 0; 5618 5619 if (cdb->byte2 & SF_FMTDATA) { 5620 if (cdb->byte2 & SF_LONGLIST) { 5621 struct scsi_format_header_long *header; 5622 5623 header = (struct scsi_format_header_long *) 5624 ctsio->kern_data_ptr; 5625 5626 defect_list_len = scsi_4btoul(header->defect_list_len); 5627 if (defect_list_len != 0) { 5628 ctl_set_invalid_field(ctsio, 5629 /*sks_valid*/ 1, 5630 /*command*/ 0, 5631 /*field*/ 2, 5632 /*bit_valid*/ 0, 5633 /*bit*/ 0); 5634 goto bailout; 5635 } 5636 } else { 5637 struct scsi_format_header_short *header; 5638 5639 header = (struct scsi_format_header_short *) 5640 ctsio->kern_data_ptr; 5641 5642 defect_list_len = scsi_2btoul(header->defect_list_len); 5643 if (defect_list_len != 0) { 5644 ctl_set_invalid_field(ctsio, 5645 /*sks_valid*/ 1, 5646 /*command*/ 0, 5647 /*field*/ 2, 5648 /*bit_valid*/ 0, 5649 /*bit*/ 0); 5650 goto bailout; 5651 } 5652 } 5653 } 5654 5655 /* 5656 * The format command will clear out the "Medium format corrupted" 5657 * status if set by the configuration code. That status is really 5658 * just a way to notify the host that we have lost the media, and 5659 * get them to issue a command that will basically make them think 5660 * they're blowing away the media. 5661 */ 5662 mtx_lock(&ctl_softc->ctl_lock); 5663 lun->flags &= ~CTL_LUN_INOPERABLE; 5664 mtx_unlock(&ctl_softc->ctl_lock); 5665 5666 ctsio->scsi_status = SCSI_STATUS_OK; 5667 ctsio->io_hdr.status = CTL_SUCCESS; 5668 bailout: 5669 5670 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5671 free(ctsio->kern_data_ptr, M_CTL); 5672 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5673 } 5674 5675 ctl_done((union ctl_io *)ctsio); 5676 return (CTL_RETVAL_COMPLETE); 5677 } 5678 5679 int 5680 ctl_write_buffer(struct ctl_scsiio *ctsio) 5681 { 5682 struct scsi_write_buffer *cdb; 5683 struct copan_page_header *header; 5684 struct ctl_lun *lun; 5685 struct ctl_softc *ctl_softc; 5686 int buffer_offset, len; 5687 int retval; 5688 5689 header = NULL; 5690 5691 retval = CTL_RETVAL_COMPLETE; 5692 5693 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5694 5695 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5696 ctl_softc = control_softc; 5697 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5698 5699 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5700 ctl_set_invalid_field(ctsio, 5701 /*sks_valid*/ 1, 5702 /*command*/ 1, 5703 /*field*/ 1, 5704 /*bit_valid*/ 1, 5705 /*bit*/ 4); 5706 ctl_done((union ctl_io *)ctsio); 5707 return (CTL_RETVAL_COMPLETE); 5708 } 5709 if (cdb->buffer_id != 0) { 5710 ctl_set_invalid_field(ctsio, 5711 /*sks_valid*/ 1, 5712 /*command*/ 1, 5713 /*field*/ 2, 5714 /*bit_valid*/ 0, 5715 /*bit*/ 0); 5716 ctl_done((union ctl_io *)ctsio); 5717 return (CTL_RETVAL_COMPLETE); 5718 } 5719 5720 len = scsi_3btoul(cdb->length); 5721 buffer_offset = scsi_3btoul(cdb->offset); 5722 5723 if (len > sizeof(lun->write_buffer)) { 5724 ctl_set_invalid_field(ctsio, 5725 /*sks_valid*/ 1, 5726 /*command*/ 1, 5727 /*field*/ 6, 5728 /*bit_valid*/ 0, 5729 /*bit*/ 0); 5730 ctl_done((union ctl_io *)ctsio); 5731 return (CTL_RETVAL_COMPLETE); 5732 } 5733 5734 if (buffer_offset != 0) { 5735 ctl_set_invalid_field(ctsio, 5736 /*sks_valid*/ 1, 5737 /*command*/ 1, 5738 /*field*/ 3, 5739 /*bit_valid*/ 0, 5740 /*bit*/ 0); 5741 ctl_done((union ctl_io *)ctsio); 5742 return (CTL_RETVAL_COMPLETE); 5743 } 5744 5745 /* 5746 * If we've got a kernel request that hasn't been malloced yet, 5747 * malloc it and tell the caller the data buffer is here. 5748 */ 5749 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5750 ctsio->kern_data_ptr = lun->write_buffer; 5751 ctsio->kern_data_len = len; 5752 ctsio->kern_total_len = len; 5753 ctsio->kern_data_resid = 0; 5754 ctsio->kern_rel_offset = 0; 5755 ctsio->kern_sg_entries = 0; 5756 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5757 ctsio->be_move_done = ctl_config_move_done; 5758 ctl_datamove((union ctl_io *)ctsio); 5759 5760 return (CTL_RETVAL_COMPLETE); 5761 } 5762 5763 ctl_done((union ctl_io *)ctsio); 5764 5765 return (CTL_RETVAL_COMPLETE); 5766 } 5767 5768 /* 5769 * Note that this function currently doesn't actually do anything inside 5770 * CTL to enforce things if the DQue bit is turned on. 5771 * 5772 * Also note that this function can't be used in the default case, because 5773 * the DQue bit isn't set in the changeable mask for the control mode page 5774 * anyway. This is just here as an example for how to implement a page 5775 * handler, and a placeholder in case we want to allow the user to turn 5776 * tagged queueing on and off. 5777 * 5778 * The D_SENSE bit handling is functional, however, and will turn 5779 * descriptor sense on and off for a given LUN. 5780 */ 5781 int 5782 ctl_control_page_handler(struct ctl_scsiio *ctsio, 5783 struct ctl_page_index *page_index, uint8_t *page_ptr) 5784 { 5785 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5786 struct ctl_lun *lun; 5787 struct ctl_softc *softc; 5788 int set_ua; 5789 uint32_t initidx; 5790 5791 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5792 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5793 set_ua = 0; 5794 5795 user_cp = (struct scsi_control_page *)page_ptr; 5796 current_cp = (struct scsi_control_page *) 5797 (page_index->page_data + (page_index->page_len * 5798 CTL_PAGE_CURRENT)); 5799 saved_cp = (struct scsi_control_page *) 5800 (page_index->page_data + (page_index->page_len * 5801 CTL_PAGE_SAVED)); 5802 5803 softc = control_softc; 5804 5805 mtx_lock(&softc->ctl_lock); 5806 if (((current_cp->rlec & SCP_DSENSE) == 0) 5807 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5808 /* 5809 * Descriptor sense is currently turned off and the user 5810 * wants to turn it on. 5811 */ 5812 current_cp->rlec |= SCP_DSENSE; 5813 saved_cp->rlec |= SCP_DSENSE; 5814 lun->flags |= CTL_LUN_SENSE_DESC; 5815 set_ua = 1; 5816 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5817 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5818 /* 5819 * Descriptor sense is currently turned on, and the user 5820 * wants to turn it off. 5821 */ 5822 current_cp->rlec &= ~SCP_DSENSE; 5823 saved_cp->rlec &= ~SCP_DSENSE; 5824 lun->flags &= ~CTL_LUN_SENSE_DESC; 5825 set_ua = 1; 5826 } 5827 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5828 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5829 #ifdef NEEDTOPORT 5830 csevent_log(CSC_CTL | CSC_SHELF_SW | 5831 CTL_UNTAG_TO_UNTAG, 5832 csevent_LogType_Trace, 5833 csevent_Severity_Information, 5834 csevent_AlertLevel_Green, 5835 csevent_FRU_Firmware, 5836 csevent_FRU_Unknown, 5837 "Received untagged to untagged transition"); 5838 #endif /* NEEDTOPORT */ 5839 } else { 5840 #ifdef NEEDTOPORT 5841 csevent_log(CSC_CTL | CSC_SHELF_SW | 5842 CTL_UNTAG_TO_TAG, 5843 csevent_LogType_ConfigChange, 5844 csevent_Severity_Information, 5845 csevent_AlertLevel_Green, 5846 csevent_FRU_Firmware, 5847 csevent_FRU_Unknown, 5848 "Received untagged to tagged " 5849 "queueing transition"); 5850 #endif /* NEEDTOPORT */ 5851 5852 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5853 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5854 set_ua = 1; 5855 } 5856 } else { 5857 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5858 #ifdef NEEDTOPORT 5859 csevent_log(CSC_CTL | CSC_SHELF_SW | 5860 CTL_TAG_TO_UNTAG, 5861 csevent_LogType_ConfigChange, 5862 csevent_Severity_Warning, 5863 csevent_AlertLevel_Yellow, 5864 csevent_FRU_Firmware, 5865 csevent_FRU_Unknown, 5866 "Received tagged queueing to untagged " 5867 "transition"); 5868 #endif /* NEEDTOPORT */ 5869 5870 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5871 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5872 set_ua = 1; 5873 } else { 5874 #ifdef NEEDTOPORT 5875 csevent_log(CSC_CTL | CSC_SHELF_SW | 5876 CTL_TAG_TO_TAG, 5877 csevent_LogType_Trace, 5878 csevent_Severity_Information, 5879 csevent_AlertLevel_Green, 5880 csevent_FRU_Firmware, 5881 csevent_FRU_Unknown, 5882 "Received tagged queueing to tagged " 5883 "queueing transition"); 5884 #endif /* NEEDTOPORT */ 5885 } 5886 } 5887 if (set_ua != 0) { 5888 int i; 5889 /* 5890 * Let other initiators know that the mode 5891 * parameters for this LUN have changed. 5892 */ 5893 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 5894 if (i == initidx) 5895 continue; 5896 5897 lun->pending_sense[i].ua_pending |= 5898 CTL_UA_MODE_CHANGE; 5899 } 5900 } 5901 mtx_unlock(&softc->ctl_lock); 5902 5903 return (0); 5904 } 5905 5906 int 5907 ctl_power_sp_handler(struct ctl_scsiio *ctsio, 5908 struct ctl_page_index *page_index, uint8_t *page_ptr) 5909 { 5910 return (0); 5911 } 5912 5913 int 5914 ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 5915 struct ctl_page_index *page_index, int pc) 5916 { 5917 struct copan_power_subpage *page; 5918 5919 page = (struct copan_power_subpage *)page_index->page_data + 5920 (page_index->page_len * pc); 5921 5922 switch (pc) { 5923 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5924 /* 5925 * We don't update the changable bits for this page. 5926 */ 5927 break; 5928 case SMS_PAGE_CTRL_CURRENT >> 6: 5929 case SMS_PAGE_CTRL_DEFAULT >> 6: 5930 case SMS_PAGE_CTRL_SAVED >> 6: 5931 #ifdef NEEDTOPORT 5932 ctl_update_power_subpage(page); 5933 #endif 5934 break; 5935 default: 5936 #ifdef NEEDTOPORT 5937 EPRINT(0, "Invalid PC %d!!", pc); 5938 #endif 5939 break; 5940 } 5941 return (0); 5942 } 5943 5944 5945 int 5946 ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 5947 struct ctl_page_index *page_index, uint8_t *page_ptr) 5948 { 5949 struct copan_aps_subpage *user_sp; 5950 struct copan_aps_subpage *current_sp; 5951 union ctl_modepage_info *modepage_info; 5952 struct ctl_softc *softc; 5953 struct ctl_lun *lun; 5954 int retval; 5955 5956 retval = CTL_RETVAL_COMPLETE; 5957 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 5958 (page_index->page_len * CTL_PAGE_CURRENT)); 5959 softc = control_softc; 5960 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5961 5962 user_sp = (struct copan_aps_subpage *)page_ptr; 5963 5964 modepage_info = (union ctl_modepage_info *) 5965 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 5966 5967 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 5968 modepage_info->header.subpage = page_index->subpage; 5969 modepage_info->aps.lock_active = user_sp->lock_active; 5970 5971 mtx_lock(&softc->ctl_lock); 5972 5973 /* 5974 * If there is a request to lock the LUN and another LUN is locked 5975 * this is an error. If the requested LUN is already locked ignore 5976 * the request. If no LUN is locked attempt to lock it. 5977 * if there is a request to unlock the LUN and the LUN is currently 5978 * locked attempt to unlock it. Otherwise ignore the request. i.e. 5979 * if another LUN is locked or no LUN is locked. 5980 */ 5981 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 5982 if (softc->aps_locked_lun == lun->lun) { 5983 /* 5984 * This LUN is already locked, so we're done. 5985 */ 5986 retval = CTL_RETVAL_COMPLETE; 5987 } else if (softc->aps_locked_lun == 0) { 5988 /* 5989 * No one has the lock, pass the request to the 5990 * backend. 5991 */ 5992 retval = lun->backend->config_write( 5993 (union ctl_io *)ctsio); 5994 } else { 5995 /* 5996 * Someone else has the lock, throw out the request. 5997 */ 5998 ctl_set_already_locked(ctsio); 5999 free(ctsio->kern_data_ptr, M_CTL); 6000 ctl_done((union ctl_io *)ctsio); 6001 6002 /* 6003 * Set the return value so that ctl_do_mode_select() 6004 * won't try to complete the command. We already 6005 * completed it here. 6006 */ 6007 retval = CTL_RETVAL_ERROR; 6008 } 6009 } else if (softc->aps_locked_lun == lun->lun) { 6010 /* 6011 * This LUN is locked, so pass the unlock request to the 6012 * backend. 6013 */ 6014 retval = lun->backend->config_write((union ctl_io *)ctsio); 6015 } 6016 mtx_unlock(&softc->ctl_lock); 6017 6018 return (retval); 6019 } 6020 6021 int 6022 ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6023 struct ctl_page_index *page_index, 6024 uint8_t *page_ptr) 6025 { 6026 uint8_t *c; 6027 int i; 6028 6029 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6030 ctl_time_io_secs = 6031 (c[0] << 8) | 6032 (c[1] << 0) | 6033 0; 6034 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6035 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6036 printf("page data:"); 6037 for (i=0; i<8; i++) 6038 printf(" %.2x",page_ptr[i]); 6039 printf("\n"); 6040 return (0); 6041 } 6042 6043 int 6044 ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6045 struct ctl_page_index *page_index, 6046 int pc) 6047 { 6048 struct copan_debugconf_subpage *page; 6049 6050 page = (struct copan_debugconf_subpage *)page_index->page_data + 6051 (page_index->page_len * pc); 6052 6053 switch (pc) { 6054 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6055 case SMS_PAGE_CTRL_DEFAULT >> 6: 6056 case SMS_PAGE_CTRL_SAVED >> 6: 6057 /* 6058 * We don't update the changable or default bits for this page. 6059 */ 6060 break; 6061 case SMS_PAGE_CTRL_CURRENT >> 6: 6062 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6063 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6064 break; 6065 default: 6066 #ifdef NEEDTOPORT 6067 EPRINT(0, "Invalid PC %d!!", pc); 6068 #endif /* NEEDTOPORT */ 6069 break; 6070 } 6071 return (0); 6072 } 6073 6074 6075 static int 6076 ctl_do_mode_select(union ctl_io *io) 6077 { 6078 struct scsi_mode_page_header *page_header; 6079 struct ctl_page_index *page_index; 6080 struct ctl_scsiio *ctsio; 6081 int control_dev, page_len; 6082 int page_len_offset, page_len_size; 6083 union ctl_modepage_info *modepage_info; 6084 struct ctl_lun *lun; 6085 int *len_left, *len_used; 6086 int retval, i; 6087 6088 ctsio = &io->scsiio; 6089 page_index = NULL; 6090 page_len = 0; 6091 retval = CTL_RETVAL_COMPLETE; 6092 6093 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6094 6095 if (lun->be_lun->lun_type != T_DIRECT) 6096 control_dev = 1; 6097 else 6098 control_dev = 0; 6099 6100 modepage_info = (union ctl_modepage_info *) 6101 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6102 len_left = &modepage_info->header.len_left; 6103 len_used = &modepage_info->header.len_used; 6104 6105 do_next_page: 6106 6107 page_header = (struct scsi_mode_page_header *) 6108 (ctsio->kern_data_ptr + *len_used); 6109 6110 if (*len_left == 0) { 6111 free(ctsio->kern_data_ptr, M_CTL); 6112 ctl_set_success(ctsio); 6113 ctl_done((union ctl_io *)ctsio); 6114 return (CTL_RETVAL_COMPLETE); 6115 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6116 6117 free(ctsio->kern_data_ptr, M_CTL); 6118 ctl_set_param_len_error(ctsio); 6119 ctl_done((union ctl_io *)ctsio); 6120 return (CTL_RETVAL_COMPLETE); 6121 6122 } else if ((page_header->page_code & SMPH_SPF) 6123 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6124 6125 free(ctsio->kern_data_ptr, M_CTL); 6126 ctl_set_param_len_error(ctsio); 6127 ctl_done((union ctl_io *)ctsio); 6128 return (CTL_RETVAL_COMPLETE); 6129 } 6130 6131 6132 /* 6133 * XXX KDM should we do something with the block descriptor? 6134 */ 6135 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6136 6137 if ((control_dev != 0) 6138 && (lun->mode_pages.index[i].page_flags & 6139 CTL_PAGE_FLAG_DISK_ONLY)) 6140 continue; 6141 6142 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6143 (page_header->page_code & SMPH_PC_MASK)) 6144 continue; 6145 6146 /* 6147 * If neither page has a subpage code, then we've got a 6148 * match. 6149 */ 6150 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6151 && ((page_header->page_code & SMPH_SPF) == 0)) { 6152 page_index = &lun->mode_pages.index[i]; 6153 page_len = page_header->page_length; 6154 break; 6155 } 6156 6157 /* 6158 * If both pages have subpages, then the subpage numbers 6159 * have to match. 6160 */ 6161 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6162 && (page_header->page_code & SMPH_SPF)) { 6163 struct scsi_mode_page_header_sp *sph; 6164 6165 sph = (struct scsi_mode_page_header_sp *)page_header; 6166 6167 if (lun->mode_pages.index[i].subpage == 6168 sph->subpage) { 6169 page_index = &lun->mode_pages.index[i]; 6170 page_len = scsi_2btoul(sph->page_length); 6171 break; 6172 } 6173 } 6174 } 6175 6176 /* 6177 * If we couldn't find the page, or if we don't have a mode select 6178 * handler for it, send back an error to the user. 6179 */ 6180 if ((page_index == NULL) 6181 || (page_index->select_handler == NULL)) { 6182 ctl_set_invalid_field(ctsio, 6183 /*sks_valid*/ 1, 6184 /*command*/ 0, 6185 /*field*/ *len_used, 6186 /*bit_valid*/ 0, 6187 /*bit*/ 0); 6188 free(ctsio->kern_data_ptr, M_CTL); 6189 ctl_done((union ctl_io *)ctsio); 6190 return (CTL_RETVAL_COMPLETE); 6191 } 6192 6193 if (page_index->page_code & SMPH_SPF) { 6194 page_len_offset = 2; 6195 page_len_size = 2; 6196 } else { 6197 page_len_size = 1; 6198 page_len_offset = 1; 6199 } 6200 6201 /* 6202 * If the length the initiator gives us isn't the one we specify in 6203 * the mode page header, or if they didn't specify enough data in 6204 * the CDB to avoid truncating this page, kick out the request. 6205 */ 6206 if ((page_len != (page_index->page_len - page_len_offset - 6207 page_len_size)) 6208 || (*len_left < page_index->page_len)) { 6209 6210 6211 ctl_set_invalid_field(ctsio, 6212 /*sks_valid*/ 1, 6213 /*command*/ 0, 6214 /*field*/ *len_used + page_len_offset, 6215 /*bit_valid*/ 0, 6216 /*bit*/ 0); 6217 free(ctsio->kern_data_ptr, M_CTL); 6218 ctl_done((union ctl_io *)ctsio); 6219 return (CTL_RETVAL_COMPLETE); 6220 } 6221 6222 /* 6223 * Run through the mode page, checking to make sure that the bits 6224 * the user changed are actually legal for him to change. 6225 */ 6226 for (i = 0; i < page_index->page_len; i++) { 6227 uint8_t *user_byte, *change_mask, *current_byte; 6228 int bad_bit; 6229 int j; 6230 6231 user_byte = (uint8_t *)page_header + i; 6232 change_mask = page_index->page_data + 6233 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6234 current_byte = page_index->page_data + 6235 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6236 6237 /* 6238 * Check to see whether the user set any bits in this byte 6239 * that he is not allowed to set. 6240 */ 6241 if ((*user_byte & ~(*change_mask)) == 6242 (*current_byte & ~(*change_mask))) 6243 continue; 6244 6245 /* 6246 * Go through bit by bit to determine which one is illegal. 6247 */ 6248 bad_bit = 0; 6249 for (j = 7; j >= 0; j--) { 6250 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6251 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6252 bad_bit = i; 6253 break; 6254 } 6255 } 6256 ctl_set_invalid_field(ctsio, 6257 /*sks_valid*/ 1, 6258 /*command*/ 0, 6259 /*field*/ *len_used + i, 6260 /*bit_valid*/ 1, 6261 /*bit*/ bad_bit); 6262 free(ctsio->kern_data_ptr, M_CTL); 6263 ctl_done((union ctl_io *)ctsio); 6264 return (CTL_RETVAL_COMPLETE); 6265 } 6266 6267 /* 6268 * Decrement these before we call the page handler, since we may 6269 * end up getting called back one way or another before the handler 6270 * returns to this context. 6271 */ 6272 *len_left -= page_index->page_len; 6273 *len_used += page_index->page_len; 6274 6275 retval = page_index->select_handler(ctsio, page_index, 6276 (uint8_t *)page_header); 6277 6278 /* 6279 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6280 * wait until this queued command completes to finish processing 6281 * the mode page. If it returns anything other than 6282 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6283 * already set the sense information, freed the data pointer, and 6284 * completed the io for us. 6285 */ 6286 if (retval != CTL_RETVAL_COMPLETE) 6287 goto bailout_no_done; 6288 6289 /* 6290 * If the initiator sent us more than one page, parse the next one. 6291 */ 6292 if (*len_left > 0) 6293 goto do_next_page; 6294 6295 ctl_set_success(ctsio); 6296 free(ctsio->kern_data_ptr, M_CTL); 6297 ctl_done((union ctl_io *)ctsio); 6298 6299 bailout_no_done: 6300 6301 return (CTL_RETVAL_COMPLETE); 6302 6303 } 6304 6305 int 6306 ctl_mode_select(struct ctl_scsiio *ctsio) 6307 { 6308 int param_len, pf, sp; 6309 int header_size, bd_len; 6310 int len_left, len_used; 6311 struct ctl_page_index *page_index; 6312 struct ctl_lun *lun; 6313 int control_dev, page_len; 6314 union ctl_modepage_info *modepage_info; 6315 int retval; 6316 6317 pf = 0; 6318 sp = 0; 6319 page_len = 0; 6320 len_used = 0; 6321 len_left = 0; 6322 retval = 0; 6323 bd_len = 0; 6324 page_index = NULL; 6325 6326 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6327 6328 if (lun->be_lun->lun_type != T_DIRECT) 6329 control_dev = 1; 6330 else 6331 control_dev = 0; 6332 6333 switch (ctsio->cdb[0]) { 6334 case MODE_SELECT_6: { 6335 struct scsi_mode_select_6 *cdb; 6336 6337 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6338 6339 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6340 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6341 6342 param_len = cdb->length; 6343 header_size = sizeof(struct scsi_mode_header_6); 6344 break; 6345 } 6346 case MODE_SELECT_10: { 6347 struct scsi_mode_select_10 *cdb; 6348 6349 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6350 6351 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6352 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6353 6354 param_len = scsi_2btoul(cdb->length); 6355 header_size = sizeof(struct scsi_mode_header_10); 6356 break; 6357 } 6358 default: 6359 ctl_set_invalid_opcode(ctsio); 6360 ctl_done((union ctl_io *)ctsio); 6361 return (CTL_RETVAL_COMPLETE); 6362 break; /* NOTREACHED */ 6363 } 6364 6365 /* 6366 * From SPC-3: 6367 * "A parameter list length of zero indicates that the Data-Out Buffer 6368 * shall be empty. This condition shall not be considered as an error." 6369 */ 6370 if (param_len == 0) { 6371 ctl_set_success(ctsio); 6372 ctl_done((union ctl_io *)ctsio); 6373 return (CTL_RETVAL_COMPLETE); 6374 } 6375 6376 /* 6377 * Since we'll hit this the first time through, prior to 6378 * allocation, we don't need to free a data buffer here. 6379 */ 6380 if (param_len < header_size) { 6381 ctl_set_param_len_error(ctsio); 6382 ctl_done((union ctl_io *)ctsio); 6383 return (CTL_RETVAL_COMPLETE); 6384 } 6385 6386 /* 6387 * Allocate the data buffer and grab the user's data. In theory, 6388 * we shouldn't have to sanity check the parameter list length here 6389 * because the maximum size is 64K. We should be able to malloc 6390 * that much without too many problems. 6391 */ 6392 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6393 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6394 ctsio->kern_data_len = param_len; 6395 ctsio->kern_total_len = param_len; 6396 ctsio->kern_data_resid = 0; 6397 ctsio->kern_rel_offset = 0; 6398 ctsio->kern_sg_entries = 0; 6399 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6400 ctsio->be_move_done = ctl_config_move_done; 6401 ctl_datamove((union ctl_io *)ctsio); 6402 6403 return (CTL_RETVAL_COMPLETE); 6404 } 6405 6406 switch (ctsio->cdb[0]) { 6407 case MODE_SELECT_6: { 6408 struct scsi_mode_header_6 *mh6; 6409 6410 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6411 bd_len = mh6->blk_desc_len; 6412 break; 6413 } 6414 case MODE_SELECT_10: { 6415 struct scsi_mode_header_10 *mh10; 6416 6417 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6418 bd_len = scsi_2btoul(mh10->blk_desc_len); 6419 break; 6420 } 6421 default: 6422 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6423 break; 6424 } 6425 6426 if (param_len < (header_size + bd_len)) { 6427 free(ctsio->kern_data_ptr, M_CTL); 6428 ctl_set_param_len_error(ctsio); 6429 ctl_done((union ctl_io *)ctsio); 6430 return (CTL_RETVAL_COMPLETE); 6431 } 6432 6433 /* 6434 * Set the IO_CONT flag, so that if this I/O gets passed to 6435 * ctl_config_write_done(), it'll get passed back to 6436 * ctl_do_mode_select() for further processing, or completion if 6437 * we're all done. 6438 */ 6439 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6440 ctsio->io_cont = ctl_do_mode_select; 6441 6442 modepage_info = (union ctl_modepage_info *) 6443 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6444 6445 memset(modepage_info, 0, sizeof(*modepage_info)); 6446 6447 len_left = param_len - header_size - bd_len; 6448 len_used = header_size + bd_len; 6449 6450 modepage_info->header.len_left = len_left; 6451 modepage_info->header.len_used = len_used; 6452 6453 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6454 } 6455 6456 int 6457 ctl_mode_sense(struct ctl_scsiio *ctsio) 6458 { 6459 struct ctl_lun *lun; 6460 int pc, page_code, dbd, llba, subpage; 6461 int alloc_len, page_len, header_len, total_len; 6462 struct scsi_mode_block_descr *block_desc; 6463 struct ctl_page_index *page_index; 6464 int control_dev; 6465 6466 dbd = 0; 6467 llba = 0; 6468 block_desc = NULL; 6469 page_index = NULL; 6470 6471 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6472 6473 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6474 6475 if (lun->be_lun->lun_type != T_DIRECT) 6476 control_dev = 1; 6477 else 6478 control_dev = 0; 6479 6480 switch (ctsio->cdb[0]) { 6481 case MODE_SENSE_6: { 6482 struct scsi_mode_sense_6 *cdb; 6483 6484 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6485 6486 header_len = sizeof(struct scsi_mode_hdr_6); 6487 if (cdb->byte2 & SMS_DBD) 6488 dbd = 1; 6489 else 6490 header_len += sizeof(struct scsi_mode_block_descr); 6491 6492 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6493 page_code = cdb->page & SMS_PAGE_CODE; 6494 subpage = cdb->subpage; 6495 alloc_len = cdb->length; 6496 break; 6497 } 6498 case MODE_SENSE_10: { 6499 struct scsi_mode_sense_10 *cdb; 6500 6501 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6502 6503 header_len = sizeof(struct scsi_mode_hdr_10); 6504 6505 if (cdb->byte2 & SMS_DBD) 6506 dbd = 1; 6507 else 6508 header_len += sizeof(struct scsi_mode_block_descr); 6509 if (cdb->byte2 & SMS10_LLBAA) 6510 llba = 1; 6511 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6512 page_code = cdb->page & SMS_PAGE_CODE; 6513 subpage = cdb->subpage; 6514 alloc_len = scsi_2btoul(cdb->length); 6515 break; 6516 } 6517 default: 6518 ctl_set_invalid_opcode(ctsio); 6519 ctl_done((union ctl_io *)ctsio); 6520 return (CTL_RETVAL_COMPLETE); 6521 break; /* NOTREACHED */ 6522 } 6523 6524 /* 6525 * We have to make a first pass through to calculate the size of 6526 * the pages that match the user's query. Then we allocate enough 6527 * memory to hold it, and actually copy the data into the buffer. 6528 */ 6529 switch (page_code) { 6530 case SMS_ALL_PAGES_PAGE: { 6531 int i; 6532 6533 page_len = 0; 6534 6535 /* 6536 * At the moment, values other than 0 and 0xff here are 6537 * reserved according to SPC-3. 6538 */ 6539 if ((subpage != SMS_SUBPAGE_PAGE_0) 6540 && (subpage != SMS_SUBPAGE_ALL)) { 6541 ctl_set_invalid_field(ctsio, 6542 /*sks_valid*/ 1, 6543 /*command*/ 1, 6544 /*field*/ 3, 6545 /*bit_valid*/ 0, 6546 /*bit*/ 0); 6547 ctl_done((union ctl_io *)ctsio); 6548 return (CTL_RETVAL_COMPLETE); 6549 } 6550 6551 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6552 if ((control_dev != 0) 6553 && (lun->mode_pages.index[i].page_flags & 6554 CTL_PAGE_FLAG_DISK_ONLY)) 6555 continue; 6556 6557 /* 6558 * We don't use this subpage if the user didn't 6559 * request all subpages. 6560 */ 6561 if ((lun->mode_pages.index[i].subpage != 0) 6562 && (subpage == SMS_SUBPAGE_PAGE_0)) 6563 continue; 6564 6565 #if 0 6566 printf("found page %#x len %d\n", 6567 lun->mode_pages.index[i].page_code & 6568 SMPH_PC_MASK, 6569 lun->mode_pages.index[i].page_len); 6570 #endif 6571 page_len += lun->mode_pages.index[i].page_len; 6572 } 6573 break; 6574 } 6575 default: { 6576 int i; 6577 6578 page_len = 0; 6579 6580 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6581 /* Look for the right page code */ 6582 if ((lun->mode_pages.index[i].page_code & 6583 SMPH_PC_MASK) != page_code) 6584 continue; 6585 6586 /* Look for the right subpage or the subpage wildcard*/ 6587 if ((lun->mode_pages.index[i].subpage != subpage) 6588 && (subpage != SMS_SUBPAGE_ALL)) 6589 continue; 6590 6591 /* Make sure the page is supported for this dev type */ 6592 if ((control_dev != 0) 6593 && (lun->mode_pages.index[i].page_flags & 6594 CTL_PAGE_FLAG_DISK_ONLY)) 6595 continue; 6596 6597 #if 0 6598 printf("found page %#x len %d\n", 6599 lun->mode_pages.index[i].page_code & 6600 SMPH_PC_MASK, 6601 lun->mode_pages.index[i].page_len); 6602 #endif 6603 6604 page_len += lun->mode_pages.index[i].page_len; 6605 } 6606 6607 if (page_len == 0) { 6608 ctl_set_invalid_field(ctsio, 6609 /*sks_valid*/ 1, 6610 /*command*/ 1, 6611 /*field*/ 2, 6612 /*bit_valid*/ 1, 6613 /*bit*/ 5); 6614 ctl_done((union ctl_io *)ctsio); 6615 return (CTL_RETVAL_COMPLETE); 6616 } 6617 break; 6618 } 6619 } 6620 6621 total_len = header_len + page_len; 6622 #if 0 6623 printf("header_len = %d, page_len = %d, total_len = %d\n", 6624 header_len, page_len, total_len); 6625 #endif 6626 6627 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6628 ctsio->kern_sg_entries = 0; 6629 ctsio->kern_data_resid = 0; 6630 ctsio->kern_rel_offset = 0; 6631 if (total_len < alloc_len) { 6632 ctsio->residual = alloc_len - total_len; 6633 ctsio->kern_data_len = total_len; 6634 ctsio->kern_total_len = total_len; 6635 } else { 6636 ctsio->residual = 0; 6637 ctsio->kern_data_len = alloc_len; 6638 ctsio->kern_total_len = alloc_len; 6639 } 6640 6641 switch (ctsio->cdb[0]) { 6642 case MODE_SENSE_6: { 6643 struct scsi_mode_hdr_6 *header; 6644 6645 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6646 6647 header->datalen = ctl_min(total_len - 1, 254); 6648 6649 if (dbd) 6650 header->block_descr_len = 0; 6651 else 6652 header->block_descr_len = 6653 sizeof(struct scsi_mode_block_descr); 6654 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6655 break; 6656 } 6657 case MODE_SENSE_10: { 6658 struct scsi_mode_hdr_10 *header; 6659 int datalen; 6660 6661 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6662 6663 datalen = ctl_min(total_len - 2, 65533); 6664 scsi_ulto2b(datalen, header->datalen); 6665 if (dbd) 6666 scsi_ulto2b(0, header->block_descr_len); 6667 else 6668 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6669 header->block_descr_len); 6670 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6671 break; 6672 } 6673 default: 6674 panic("invalid CDB type %#x", ctsio->cdb[0]); 6675 break; /* NOTREACHED */ 6676 } 6677 6678 /* 6679 * If we've got a disk, use its blocksize in the block 6680 * descriptor. Otherwise, just set it to 0. 6681 */ 6682 if (dbd == 0) { 6683 if (control_dev != 0) 6684 scsi_ulto3b(lun->be_lun->blocksize, 6685 block_desc->block_len); 6686 else 6687 scsi_ulto3b(0, block_desc->block_len); 6688 } 6689 6690 switch (page_code) { 6691 case SMS_ALL_PAGES_PAGE: { 6692 int i, data_used; 6693 6694 data_used = header_len; 6695 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6696 struct ctl_page_index *page_index; 6697 6698 page_index = &lun->mode_pages.index[i]; 6699 6700 if ((control_dev != 0) 6701 && (page_index->page_flags & 6702 CTL_PAGE_FLAG_DISK_ONLY)) 6703 continue; 6704 6705 /* 6706 * We don't use this subpage if the user didn't 6707 * request all subpages. We already checked (above) 6708 * to make sure the user only specified a subpage 6709 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6710 */ 6711 if ((page_index->subpage != 0) 6712 && (subpage == SMS_SUBPAGE_PAGE_0)) 6713 continue; 6714 6715 /* 6716 * Call the handler, if it exists, to update the 6717 * page to the latest values. 6718 */ 6719 if (page_index->sense_handler != NULL) 6720 page_index->sense_handler(ctsio, page_index,pc); 6721 6722 memcpy(ctsio->kern_data_ptr + data_used, 6723 page_index->page_data + 6724 (page_index->page_len * pc), 6725 page_index->page_len); 6726 data_used += page_index->page_len; 6727 } 6728 break; 6729 } 6730 default: { 6731 int i, data_used; 6732 6733 data_used = header_len; 6734 6735 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6736 struct ctl_page_index *page_index; 6737 6738 page_index = &lun->mode_pages.index[i]; 6739 6740 /* Look for the right page code */ 6741 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6742 continue; 6743 6744 /* Look for the right subpage or the subpage wildcard*/ 6745 if ((page_index->subpage != subpage) 6746 && (subpage != SMS_SUBPAGE_ALL)) 6747 continue; 6748 6749 /* Make sure the page is supported for this dev type */ 6750 if ((control_dev != 0) 6751 && (page_index->page_flags & 6752 CTL_PAGE_FLAG_DISK_ONLY)) 6753 continue; 6754 6755 /* 6756 * Call the handler, if it exists, to update the 6757 * page to the latest values. 6758 */ 6759 if (page_index->sense_handler != NULL) 6760 page_index->sense_handler(ctsio, page_index,pc); 6761 6762 memcpy(ctsio->kern_data_ptr + data_used, 6763 page_index->page_data + 6764 (page_index->page_len * pc), 6765 page_index->page_len); 6766 data_used += page_index->page_len; 6767 } 6768 break; 6769 } 6770 } 6771 6772 ctsio->scsi_status = SCSI_STATUS_OK; 6773 6774 ctsio->be_move_done = ctl_config_move_done; 6775 ctl_datamove((union ctl_io *)ctsio); 6776 6777 return (CTL_RETVAL_COMPLETE); 6778 } 6779 6780 int 6781 ctl_read_capacity(struct ctl_scsiio *ctsio) 6782 { 6783 struct scsi_read_capacity *cdb; 6784 struct scsi_read_capacity_data *data; 6785 struct ctl_lun *lun; 6786 uint32_t lba; 6787 6788 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6789 6790 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6791 6792 lba = scsi_4btoul(cdb->addr); 6793 if (((cdb->pmi & SRC_PMI) == 0) 6794 && (lba != 0)) { 6795 ctl_set_invalid_field(/*ctsio*/ ctsio, 6796 /*sks_valid*/ 1, 6797 /*command*/ 1, 6798 /*field*/ 2, 6799 /*bit_valid*/ 0, 6800 /*bit*/ 0); 6801 ctl_done((union ctl_io *)ctsio); 6802 return (CTL_RETVAL_COMPLETE); 6803 } 6804 6805 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6806 6807 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6808 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6809 ctsio->residual = 0; 6810 ctsio->kern_data_len = sizeof(*data); 6811 ctsio->kern_total_len = sizeof(*data); 6812 ctsio->kern_data_resid = 0; 6813 ctsio->kern_rel_offset = 0; 6814 ctsio->kern_sg_entries = 0; 6815 6816 /* 6817 * If the maximum LBA is greater than 0xfffffffe, the user must 6818 * issue a SERVICE ACTION IN (16) command, with the read capacity 6819 * serivce action set. 6820 */ 6821 if (lun->be_lun->maxlba > 0xfffffffe) 6822 scsi_ulto4b(0xffffffff, data->addr); 6823 else 6824 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6825 6826 /* 6827 * XXX KDM this may not be 512 bytes... 6828 */ 6829 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6830 6831 ctsio->scsi_status = SCSI_STATUS_OK; 6832 6833 ctsio->be_move_done = ctl_config_move_done; 6834 ctl_datamove((union ctl_io *)ctsio); 6835 6836 return (CTL_RETVAL_COMPLETE); 6837 } 6838 6839 static int 6840 ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6841 { 6842 struct scsi_read_capacity_16 *cdb; 6843 struct scsi_read_capacity_data_long *data; 6844 struct ctl_lun *lun; 6845 uint64_t lba; 6846 uint32_t alloc_len; 6847 6848 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6849 6850 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6851 6852 alloc_len = scsi_4btoul(cdb->alloc_len); 6853 lba = scsi_8btou64(cdb->addr); 6854 6855 if ((cdb->reladr & SRC16_PMI) 6856 && (lba != 0)) { 6857 ctl_set_invalid_field(/*ctsio*/ ctsio, 6858 /*sks_valid*/ 1, 6859 /*command*/ 1, 6860 /*field*/ 2, 6861 /*bit_valid*/ 0, 6862 /*bit*/ 0); 6863 ctl_done((union ctl_io *)ctsio); 6864 return (CTL_RETVAL_COMPLETE); 6865 } 6866 6867 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6868 6869 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6870 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6871 6872 if (sizeof(*data) < alloc_len) { 6873 ctsio->residual = alloc_len - sizeof(*data); 6874 ctsio->kern_data_len = sizeof(*data); 6875 ctsio->kern_total_len = sizeof(*data); 6876 } else { 6877 ctsio->residual = 0; 6878 ctsio->kern_data_len = alloc_len; 6879 ctsio->kern_total_len = alloc_len; 6880 } 6881 ctsio->kern_data_resid = 0; 6882 ctsio->kern_rel_offset = 0; 6883 ctsio->kern_sg_entries = 0; 6884 6885 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 6886 /* XXX KDM this may not be 512 bytes... */ 6887 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6888 6889 ctsio->scsi_status = SCSI_STATUS_OK; 6890 6891 ctsio->be_move_done = ctl_config_move_done; 6892 ctl_datamove((union ctl_io *)ctsio); 6893 6894 return (CTL_RETVAL_COMPLETE); 6895 } 6896 6897 int 6898 ctl_service_action_in(struct ctl_scsiio *ctsio) 6899 { 6900 struct scsi_service_action_in *cdb; 6901 int retval; 6902 6903 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 6904 6905 cdb = (struct scsi_service_action_in *)ctsio->cdb; 6906 6907 retval = CTL_RETVAL_COMPLETE; 6908 6909 switch (cdb->service_action) { 6910 case SRC16_SERVICE_ACTION: 6911 retval = ctl_read_capacity_16(ctsio); 6912 break; 6913 default: 6914 ctl_set_invalid_field(/*ctsio*/ ctsio, 6915 /*sks_valid*/ 1, 6916 /*command*/ 1, 6917 /*field*/ 1, 6918 /*bit_valid*/ 1, 6919 /*bit*/ 4); 6920 ctl_done((union ctl_io *)ctsio); 6921 break; 6922 } 6923 6924 return (retval); 6925 } 6926 6927 int 6928 ctl_maintenance_in(struct ctl_scsiio *ctsio) 6929 { 6930 struct scsi_maintenance_in *cdb; 6931 int retval; 6932 int alloc_len, total_len = 0; 6933 int num_target_port_groups, single; 6934 struct ctl_lun *lun; 6935 struct ctl_softc *softc; 6936 struct scsi_target_group_data *rtg_ptr; 6937 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 6938 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 6939 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 6940 6941 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 6942 6943 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 6944 softc = control_softc; 6945 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6946 6947 retval = CTL_RETVAL_COMPLETE; 6948 6949 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 6950 ctl_set_invalid_field(/*ctsio*/ ctsio, 6951 /*sks_valid*/ 1, 6952 /*command*/ 1, 6953 /*field*/ 1, 6954 /*bit_valid*/ 1, 6955 /*bit*/ 4); 6956 ctl_done((union ctl_io *)ctsio); 6957 return(retval); 6958 } 6959 6960 mtx_lock(&softc->ctl_lock); 6961 single = ctl_is_single; 6962 mtx_unlock(&softc->ctl_lock); 6963 6964 if (single) 6965 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 6966 else 6967 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 6968 6969 total_len = sizeof(struct scsi_target_group_data) + 6970 sizeof(struct scsi_target_port_group_descriptor) * 6971 num_target_port_groups + 6972 sizeof(struct scsi_target_port_descriptor) * 6973 NUM_PORTS_PER_GRP * num_target_port_groups; 6974 6975 alloc_len = scsi_4btoul(cdb->length); 6976 6977 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6978 6979 ctsio->kern_sg_entries = 0; 6980 6981 if (total_len < alloc_len) { 6982 ctsio->residual = alloc_len - total_len; 6983 ctsio->kern_data_len = total_len; 6984 ctsio->kern_total_len = total_len; 6985 } else { 6986 ctsio->residual = 0; 6987 ctsio->kern_data_len = alloc_len; 6988 ctsio->kern_total_len = alloc_len; 6989 } 6990 ctsio->kern_data_resid = 0; 6991 ctsio->kern_rel_offset = 0; 6992 6993 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 6994 6995 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 6996 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 6997 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 6998 &tp_desc_ptr1_1->desc_list[0]; 6999 7000 if (single == 0) { 7001 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7002 &tp_desc_ptr1_2->desc_list[0]; 7003 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7004 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7005 &tp_desc_ptr2_1->desc_list[0]; 7006 } else { 7007 tpg_desc_ptr2 = NULL; 7008 tp_desc_ptr2_1 = NULL; 7009 tp_desc_ptr2_2 = NULL; 7010 } 7011 7012 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7013 if (single == 0) { 7014 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7015 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7016 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7017 tpg_desc_ptr2->pref_state = 7018 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7019 } else { 7020 tpg_desc_ptr1->pref_state = 7021 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7022 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7023 } 7024 } else { 7025 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7026 tpg_desc_ptr1->pref_state = 7027 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7028 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7029 } else { 7030 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7031 tpg_desc_ptr2->pref_state = 7032 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7033 } 7034 } 7035 } else { 7036 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7037 } 7038 tpg_desc_ptr1->support = 0; 7039 tpg_desc_ptr1->target_port_group[1] = 1; 7040 tpg_desc_ptr1->status = TPG_IMPLICIT; 7041 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7042 7043 if (single == 0) { 7044 tpg_desc_ptr2->support = 0; 7045 tpg_desc_ptr2->target_port_group[1] = 2; 7046 tpg_desc_ptr2->status = TPG_IMPLICIT; 7047 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7048 7049 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7050 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7051 7052 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7053 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7054 } else { 7055 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7056 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7057 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7058 } else { 7059 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7060 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7061 } 7062 } 7063 7064 ctsio->be_move_done = ctl_config_move_done; 7065 7066 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7067 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7068 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7069 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7070 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7071 7072 ctl_datamove((union ctl_io *)ctsio); 7073 return(retval); 7074 } 7075 7076 int 7077 ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7078 { 7079 struct scsi_per_res_in *cdb; 7080 int alloc_len, total_len = 0; 7081 /* struct scsi_per_res_in_rsrv in_data; */ 7082 struct ctl_lun *lun; 7083 struct ctl_softc *softc; 7084 7085 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7086 7087 softc = control_softc; 7088 7089 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7090 7091 alloc_len = scsi_2btoul(cdb->length); 7092 7093 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7094 7095 retry: 7096 mtx_lock(&softc->ctl_lock); 7097 switch (cdb->action) { 7098 case SPRI_RK: /* read keys */ 7099 total_len = sizeof(struct scsi_per_res_in_keys) + 7100 lun->pr_key_count * 7101 sizeof(struct scsi_per_res_key); 7102 break; 7103 case SPRI_RR: /* read reservation */ 7104 if (lun->flags & CTL_LUN_PR_RESERVED) 7105 total_len = sizeof(struct scsi_per_res_in_rsrv); 7106 else 7107 total_len = sizeof(struct scsi_per_res_in_header); 7108 break; 7109 case SPRI_RC: /* report capabilities */ 7110 total_len = sizeof(struct scsi_per_res_cap); 7111 break; 7112 case SPRI_RS: /* read full status */ 7113 default: 7114 mtx_unlock(&softc->ctl_lock); 7115 ctl_set_invalid_field(ctsio, 7116 /*sks_valid*/ 1, 7117 /*command*/ 1, 7118 /*field*/ 1, 7119 /*bit_valid*/ 1, 7120 /*bit*/ 0); 7121 ctl_done((union ctl_io *)ctsio); 7122 return (CTL_RETVAL_COMPLETE); 7123 break; /* NOTREACHED */ 7124 } 7125 mtx_unlock(&softc->ctl_lock); 7126 7127 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7128 7129 if (total_len < alloc_len) { 7130 ctsio->residual = alloc_len - total_len; 7131 ctsio->kern_data_len = total_len; 7132 ctsio->kern_total_len = total_len; 7133 } else { 7134 ctsio->residual = 0; 7135 ctsio->kern_data_len = alloc_len; 7136 ctsio->kern_total_len = alloc_len; 7137 } 7138 7139 ctsio->kern_data_resid = 0; 7140 ctsio->kern_rel_offset = 0; 7141 ctsio->kern_sg_entries = 0; 7142 7143 mtx_lock(&softc->ctl_lock); 7144 switch (cdb->action) { 7145 case SPRI_RK: { // read keys 7146 struct scsi_per_res_in_keys *res_keys; 7147 int i, key_count; 7148 7149 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7150 7151 /* 7152 * We had to drop the lock to allocate our buffer, which 7153 * leaves time for someone to come in with another 7154 * persistent reservation. (That is unlikely, though, 7155 * since this should be the only persistent reservation 7156 * command active right now.) 7157 */ 7158 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7159 (lun->pr_key_count * 7160 sizeof(struct scsi_per_res_key)))){ 7161 mtx_unlock(&softc->ctl_lock); 7162 free(ctsio->kern_data_ptr, M_CTL); 7163 printf("%s: reservation length changed, retrying\n", 7164 __func__); 7165 goto retry; 7166 } 7167 7168 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7169 7170 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7171 lun->pr_key_count, res_keys->header.length); 7172 7173 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7174 if (!lun->per_res[i].registered) 7175 continue; 7176 7177 /* 7178 * We used lun->pr_key_count to calculate the 7179 * size to allocate. If it turns out the number of 7180 * initiators with the registered flag set is 7181 * larger than that (i.e. they haven't been kept in 7182 * sync), we've got a problem. 7183 */ 7184 if (key_count >= lun->pr_key_count) { 7185 #ifdef NEEDTOPORT 7186 csevent_log(CSC_CTL | CSC_SHELF_SW | 7187 CTL_PR_ERROR, 7188 csevent_LogType_Fault, 7189 csevent_AlertLevel_Yellow, 7190 csevent_FRU_ShelfController, 7191 csevent_FRU_Firmware, 7192 csevent_FRU_Unknown, 7193 "registered keys %d >= key " 7194 "count %d", key_count, 7195 lun->pr_key_count); 7196 #endif 7197 key_count++; 7198 continue; 7199 } 7200 memcpy(res_keys->keys[key_count].key, 7201 lun->per_res[i].res_key.key, 7202 ctl_min(sizeof(res_keys->keys[key_count].key), 7203 sizeof(lun->per_res[i].res_key))); 7204 key_count++; 7205 } 7206 break; 7207 } 7208 case SPRI_RR: { // read reservation 7209 struct scsi_per_res_in_rsrv *res; 7210 int tmp_len, header_only; 7211 7212 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7213 7214 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7215 7216 if (lun->flags & CTL_LUN_PR_RESERVED) 7217 { 7218 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7219 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7220 res->header.length); 7221 header_only = 0; 7222 } else { 7223 tmp_len = sizeof(struct scsi_per_res_in_header); 7224 scsi_ulto4b(0, res->header.length); 7225 header_only = 1; 7226 } 7227 7228 /* 7229 * We had to drop the lock to allocate our buffer, which 7230 * leaves time for someone to come in with another 7231 * persistent reservation. (That is unlikely, though, 7232 * since this should be the only persistent reservation 7233 * command active right now.) 7234 */ 7235 if (tmp_len != total_len) { 7236 mtx_unlock(&softc->ctl_lock); 7237 free(ctsio->kern_data_ptr, M_CTL); 7238 printf("%s: reservation status changed, retrying\n", 7239 __func__); 7240 goto retry; 7241 } 7242 7243 /* 7244 * No reservation held, so we're done. 7245 */ 7246 if (header_only != 0) 7247 break; 7248 7249 /* 7250 * If the registration is an All Registrants type, the key 7251 * is 0, since it doesn't really matter. 7252 */ 7253 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7254 memcpy(res->data.reservation, 7255 &lun->per_res[lun->pr_res_idx].res_key, 7256 sizeof(struct scsi_per_res_key)); 7257 } 7258 res->data.scopetype = lun->res_type; 7259 break; 7260 } 7261 case SPRI_RC: //report capabilities 7262 { 7263 struct scsi_per_res_cap *res_cap; 7264 uint16_t type_mask; 7265 7266 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7267 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7268 res_cap->flags2 |= SPRI_TMV; 7269 type_mask = SPRI_TM_WR_EX_AR | 7270 SPRI_TM_EX_AC_RO | 7271 SPRI_TM_WR_EX_RO | 7272 SPRI_TM_EX_AC | 7273 SPRI_TM_WR_EX | 7274 SPRI_TM_EX_AC_AR; 7275 scsi_ulto2b(type_mask, res_cap->type_mask); 7276 break; 7277 } 7278 case SPRI_RS: //read full status 7279 default: 7280 /* 7281 * This is a bug, because we just checked for this above, 7282 * and should have returned an error. 7283 */ 7284 panic("Invalid PR type %x", cdb->action); 7285 break; /* NOTREACHED */ 7286 } 7287 mtx_unlock(&softc->ctl_lock); 7288 7289 ctsio->be_move_done = ctl_config_move_done; 7290 7291 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7292 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7293 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7294 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7295 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7296 7297 ctl_datamove((union ctl_io *)ctsio); 7298 7299 return (CTL_RETVAL_COMPLETE); 7300 } 7301 7302 /* 7303 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7304 * it should return. 7305 */ 7306 static int 7307 ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7308 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7309 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7310 struct scsi_per_res_out_parms* param) 7311 { 7312 union ctl_ha_msg persis_io; 7313 int retval, i; 7314 int isc_retval; 7315 7316 retval = 0; 7317 7318 if (sa_res_key == 0) { 7319 mtx_lock(&softc->ctl_lock); 7320 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7321 /* validate scope and type */ 7322 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7323 SPR_LU_SCOPE) { 7324 mtx_unlock(&softc->ctl_lock); 7325 ctl_set_invalid_field(/*ctsio*/ ctsio, 7326 /*sks_valid*/ 1, 7327 /*command*/ 1, 7328 /*field*/ 2, 7329 /*bit_valid*/ 1, 7330 /*bit*/ 4); 7331 ctl_done((union ctl_io *)ctsio); 7332 return (1); 7333 } 7334 7335 if (type>8 || type==2 || type==4 || type==0) { 7336 mtx_unlock(&softc->ctl_lock); 7337 ctl_set_invalid_field(/*ctsio*/ ctsio, 7338 /*sks_valid*/ 1, 7339 /*command*/ 1, 7340 /*field*/ 2, 7341 /*bit_valid*/ 1, 7342 /*bit*/ 0); 7343 ctl_done((union ctl_io *)ctsio); 7344 return (1); 7345 } 7346 7347 /* temporarily unregister this nexus */ 7348 lun->per_res[residx].registered = 0; 7349 7350 /* 7351 * Unregister everybody else and build UA for 7352 * them 7353 */ 7354 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7355 if (lun->per_res[i].registered == 0) 7356 continue; 7357 7358 if (!persis_offset 7359 && i <CTL_MAX_INITIATORS) 7360 lun->pending_sense[i].ua_pending |= 7361 CTL_UA_REG_PREEMPT; 7362 else if (persis_offset 7363 && i >= persis_offset) 7364 lun->pending_sense[i-persis_offset 7365 ].ua_pending |= 7366 CTL_UA_REG_PREEMPT; 7367 lun->per_res[i].registered = 0; 7368 memset(&lun->per_res[i].res_key, 0, 7369 sizeof(struct scsi_per_res_key)); 7370 } 7371 lun->per_res[residx].registered = 1; 7372 lun->pr_key_count = 1; 7373 lun->res_type = type; 7374 if (lun->res_type != SPR_TYPE_WR_EX_AR 7375 && lun->res_type != SPR_TYPE_EX_AC_AR) 7376 lun->pr_res_idx = residx; 7377 7378 mtx_unlock(&softc->ctl_lock); 7379 /* send msg to other side */ 7380 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7381 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7382 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7383 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7384 persis_io.pr.pr_info.res_type = type; 7385 memcpy(persis_io.pr.pr_info.sa_res_key, 7386 param->serv_act_res_key, 7387 sizeof(param->serv_act_res_key)); 7388 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7389 &persis_io, sizeof(persis_io), 0)) > 7390 CTL_HA_STATUS_SUCCESS) { 7391 printf("CTL:Persis Out error returned " 7392 "from ctl_ha_msg_send %d\n", 7393 isc_retval); 7394 } 7395 } else { 7396 /* not all registrants */ 7397 mtx_unlock(&softc->ctl_lock); 7398 free(ctsio->kern_data_ptr, M_CTL); 7399 ctl_set_invalid_field(ctsio, 7400 /*sks_valid*/ 1, 7401 /*command*/ 0, 7402 /*field*/ 8, 7403 /*bit_valid*/ 0, 7404 /*bit*/ 0); 7405 ctl_done((union ctl_io *)ctsio); 7406 return (1); 7407 } 7408 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7409 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7410 int found = 0; 7411 7412 mtx_lock(&softc->ctl_lock); 7413 if (res_key == sa_res_key) { 7414 /* special case */ 7415 /* 7416 * The spec implies this is not good but doesn't 7417 * say what to do. There are two choices either 7418 * generate a res conflict or check condition 7419 * with illegal field in parameter data. Since 7420 * that is what is done when the sa_res_key is 7421 * zero I'll take that approach since this has 7422 * to do with the sa_res_key. 7423 */ 7424 mtx_unlock(&softc->ctl_lock); 7425 free(ctsio->kern_data_ptr, M_CTL); 7426 ctl_set_invalid_field(ctsio, 7427 /*sks_valid*/ 1, 7428 /*command*/ 0, 7429 /*field*/ 8, 7430 /*bit_valid*/ 0, 7431 /*bit*/ 0); 7432 ctl_done((union ctl_io *)ctsio); 7433 return (1); 7434 } 7435 7436 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7437 if (lun->per_res[i].registered 7438 && memcmp(param->serv_act_res_key, 7439 lun->per_res[i].res_key.key, 7440 sizeof(struct scsi_per_res_key)) != 0) 7441 continue; 7442 7443 found = 1; 7444 lun->per_res[i].registered = 0; 7445 memset(&lun->per_res[i].res_key, 0, 7446 sizeof(struct scsi_per_res_key)); 7447 lun->pr_key_count--; 7448 7449 if (!persis_offset 7450 && i < CTL_MAX_INITIATORS) 7451 lun->pending_sense[i].ua_pending |= 7452 CTL_UA_REG_PREEMPT; 7453 else if (persis_offset 7454 && i >= persis_offset) 7455 lun->pending_sense[i-persis_offset].ua_pending|= 7456 CTL_UA_REG_PREEMPT; 7457 } 7458 mtx_unlock(&softc->ctl_lock); 7459 if (!found) { 7460 free(ctsio->kern_data_ptr, M_CTL); 7461 ctl_set_reservation_conflict(ctsio); 7462 ctl_done((union ctl_io *)ctsio); 7463 return (CTL_RETVAL_COMPLETE); 7464 } 7465 /* send msg to other side */ 7466 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7467 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7468 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7469 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7470 persis_io.pr.pr_info.res_type = type; 7471 memcpy(persis_io.pr.pr_info.sa_res_key, 7472 param->serv_act_res_key, 7473 sizeof(param->serv_act_res_key)); 7474 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7475 &persis_io, sizeof(persis_io), 0)) > 7476 CTL_HA_STATUS_SUCCESS) { 7477 printf("CTL:Persis Out error returned from " 7478 "ctl_ha_msg_send %d\n", isc_retval); 7479 } 7480 } else { 7481 /* Reserved but not all registrants */ 7482 /* sa_res_key is res holder */ 7483 if (memcmp(param->serv_act_res_key, 7484 lun->per_res[lun->pr_res_idx].res_key.key, 7485 sizeof(struct scsi_per_res_key)) == 0) { 7486 /* validate scope and type */ 7487 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7488 SPR_LU_SCOPE) { 7489 ctl_set_invalid_field(/*ctsio*/ ctsio, 7490 /*sks_valid*/ 1, 7491 /*command*/ 1, 7492 /*field*/ 2, 7493 /*bit_valid*/ 1, 7494 /*bit*/ 4); 7495 ctl_done((union ctl_io *)ctsio); 7496 return (1); 7497 } 7498 7499 if (type>8 || type==2 || type==4 || type==0) { 7500 ctl_set_invalid_field(/*ctsio*/ ctsio, 7501 /*sks_valid*/ 1, 7502 /*command*/ 1, 7503 /*field*/ 2, 7504 /*bit_valid*/ 1, 7505 /*bit*/ 0); 7506 ctl_done((union ctl_io *)ctsio); 7507 return (1); 7508 } 7509 7510 /* 7511 * Do the following: 7512 * if sa_res_key != res_key remove all 7513 * registrants w/sa_res_key and generate UA 7514 * for these registrants(Registrations 7515 * Preempted) if it wasn't an exclusive 7516 * reservation generate UA(Reservations 7517 * Preempted) for all other registered nexuses 7518 * if the type has changed. Establish the new 7519 * reservation and holder. If res_key and 7520 * sa_res_key are the same do the above 7521 * except don't unregister the res holder. 7522 */ 7523 7524 /* 7525 * Temporarily unregister so it won't get 7526 * removed or UA generated 7527 */ 7528 lun->per_res[residx].registered = 0; 7529 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7530 if (lun->per_res[i].registered == 0) 7531 continue; 7532 7533 if (memcmp(param->serv_act_res_key, 7534 lun->per_res[i].res_key.key, 7535 sizeof(struct scsi_per_res_key)) == 0) { 7536 lun->per_res[i].registered = 0; 7537 memset(&lun->per_res[i].res_key, 7538 0, 7539 sizeof(struct scsi_per_res_key)); 7540 lun->pr_key_count--; 7541 7542 if (!persis_offset 7543 && i < CTL_MAX_INITIATORS) 7544 lun->pending_sense[i 7545 ].ua_pending |= 7546 CTL_UA_REG_PREEMPT; 7547 else if (persis_offset 7548 && i >= persis_offset) 7549 lun->pending_sense[ 7550 i-persis_offset].ua_pending |= 7551 CTL_UA_REG_PREEMPT; 7552 } else if (type != lun->res_type 7553 && (lun->res_type == SPR_TYPE_WR_EX_RO 7554 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7555 if (!persis_offset 7556 && i < CTL_MAX_INITIATORS) 7557 lun->pending_sense[i 7558 ].ua_pending |= 7559 CTL_UA_RES_RELEASE; 7560 else if (persis_offset 7561 && i >= persis_offset) 7562 lun->pending_sense[ 7563 i-persis_offset 7564 ].ua_pending |= 7565 CTL_UA_RES_RELEASE; 7566 } 7567 } 7568 lun->per_res[residx].registered = 1; 7569 lun->res_type = type; 7570 if (lun->res_type != SPR_TYPE_WR_EX_AR 7571 && lun->res_type != SPR_TYPE_EX_AC_AR) 7572 lun->pr_res_idx = residx; 7573 else 7574 lun->pr_res_idx = 7575 CTL_PR_ALL_REGISTRANTS; 7576 7577 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7578 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7579 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7580 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7581 persis_io.pr.pr_info.res_type = type; 7582 memcpy(persis_io.pr.pr_info.sa_res_key, 7583 param->serv_act_res_key, 7584 sizeof(param->serv_act_res_key)); 7585 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7586 &persis_io, sizeof(persis_io), 0)) > 7587 CTL_HA_STATUS_SUCCESS) { 7588 printf("CTL:Persis Out error returned " 7589 "from ctl_ha_msg_send %d\n", 7590 isc_retval); 7591 } 7592 } else { 7593 /* 7594 * sa_res_key is not the res holder just 7595 * remove registrants 7596 */ 7597 int found=0; 7598 mtx_lock(&softc->ctl_lock); 7599 7600 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7601 if (memcmp(param->serv_act_res_key, 7602 lun->per_res[i].res_key.key, 7603 sizeof(struct scsi_per_res_key)) != 0) 7604 continue; 7605 7606 found = 1; 7607 lun->per_res[i].registered = 0; 7608 memset(&lun->per_res[i].res_key, 0, 7609 sizeof(struct scsi_per_res_key)); 7610 lun->pr_key_count--; 7611 7612 if (!persis_offset 7613 && i < CTL_MAX_INITIATORS) 7614 lun->pending_sense[i].ua_pending |= 7615 CTL_UA_REG_PREEMPT; 7616 else if (persis_offset 7617 && i >= persis_offset) 7618 lun->pending_sense[ 7619 i-persis_offset].ua_pending |= 7620 CTL_UA_REG_PREEMPT; 7621 } 7622 7623 if (!found) { 7624 mtx_unlock(&softc->ctl_lock); 7625 free(ctsio->kern_data_ptr, M_CTL); 7626 ctl_set_reservation_conflict(ctsio); 7627 ctl_done((union ctl_io *)ctsio); 7628 return (1); 7629 } 7630 mtx_unlock(&softc->ctl_lock); 7631 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7632 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7633 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7634 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7635 persis_io.pr.pr_info.res_type = type; 7636 memcpy(persis_io.pr.pr_info.sa_res_key, 7637 param->serv_act_res_key, 7638 sizeof(param->serv_act_res_key)); 7639 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7640 &persis_io, sizeof(persis_io), 0)) > 7641 CTL_HA_STATUS_SUCCESS) { 7642 printf("CTL:Persis Out error returned " 7643 "from ctl_ha_msg_send %d\n", 7644 isc_retval); 7645 } 7646 } 7647 } 7648 7649 lun->PRGeneration++; 7650 7651 return (retval); 7652 } 7653 7654 static void 7655 ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7656 { 7657 int i; 7658 7659 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7660 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7661 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7662 msg->pr.pr_info.sa_res_key, 7663 sizeof(struct scsi_per_res_key)) != 0) { 7664 uint64_t sa_res_key; 7665 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7666 7667 if (sa_res_key == 0) { 7668 /* temporarily unregister this nexus */ 7669 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7670 7671 /* 7672 * Unregister everybody else and build UA for 7673 * them 7674 */ 7675 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7676 if (lun->per_res[i].registered == 0) 7677 continue; 7678 7679 if (!persis_offset 7680 && i < CTL_MAX_INITIATORS) 7681 lun->pending_sense[i].ua_pending |= 7682 CTL_UA_REG_PREEMPT; 7683 else if (persis_offset && i >= persis_offset) 7684 lun->pending_sense[i - 7685 persis_offset].ua_pending |= 7686 CTL_UA_REG_PREEMPT; 7687 lun->per_res[i].registered = 0; 7688 memset(&lun->per_res[i].res_key, 0, 7689 sizeof(struct scsi_per_res_key)); 7690 } 7691 7692 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7693 lun->pr_key_count = 1; 7694 lun->res_type = msg->pr.pr_info.res_type; 7695 if (lun->res_type != SPR_TYPE_WR_EX_AR 7696 && lun->res_type != SPR_TYPE_EX_AC_AR) 7697 lun->pr_res_idx = msg->pr.pr_info.residx; 7698 } else { 7699 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7700 if (memcmp(msg->pr.pr_info.sa_res_key, 7701 lun->per_res[i].res_key.key, 7702 sizeof(struct scsi_per_res_key)) != 0) 7703 continue; 7704 7705 lun->per_res[i].registered = 0; 7706 memset(&lun->per_res[i].res_key, 0, 7707 sizeof(struct scsi_per_res_key)); 7708 lun->pr_key_count--; 7709 7710 if (!persis_offset 7711 && i < persis_offset) 7712 lun->pending_sense[i].ua_pending |= 7713 CTL_UA_REG_PREEMPT; 7714 else if (persis_offset 7715 && i >= persis_offset) 7716 lun->pending_sense[i - 7717 persis_offset].ua_pending |= 7718 CTL_UA_REG_PREEMPT; 7719 } 7720 } 7721 } else { 7722 /* 7723 * Temporarily unregister so it won't get removed 7724 * or UA generated 7725 */ 7726 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7727 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7728 if (lun->per_res[i].registered == 0) 7729 continue; 7730 7731 if (memcmp(msg->pr.pr_info.sa_res_key, 7732 lun->per_res[i].res_key.key, 7733 sizeof(struct scsi_per_res_key)) == 0) { 7734 lun->per_res[i].registered = 0; 7735 memset(&lun->per_res[i].res_key, 0, 7736 sizeof(struct scsi_per_res_key)); 7737 lun->pr_key_count--; 7738 if (!persis_offset 7739 && i < CTL_MAX_INITIATORS) 7740 lun->pending_sense[i].ua_pending |= 7741 CTL_UA_REG_PREEMPT; 7742 else if (persis_offset 7743 && i >= persis_offset) 7744 lun->pending_sense[i - 7745 persis_offset].ua_pending |= 7746 CTL_UA_REG_PREEMPT; 7747 } else if (msg->pr.pr_info.res_type != lun->res_type 7748 && (lun->res_type == SPR_TYPE_WR_EX_RO 7749 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7750 if (!persis_offset 7751 && i < persis_offset) 7752 lun->pending_sense[i 7753 ].ua_pending |= 7754 CTL_UA_RES_RELEASE; 7755 else if (persis_offset 7756 && i >= persis_offset) 7757 lun->pending_sense[i - 7758 persis_offset].ua_pending |= 7759 CTL_UA_RES_RELEASE; 7760 } 7761 } 7762 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7763 lun->res_type = msg->pr.pr_info.res_type; 7764 if (lun->res_type != SPR_TYPE_WR_EX_AR 7765 && lun->res_type != SPR_TYPE_EX_AC_AR) 7766 lun->pr_res_idx = msg->pr.pr_info.residx; 7767 else 7768 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7769 } 7770 lun->PRGeneration++; 7771 7772 } 7773 7774 7775 int 7776 ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7777 { 7778 int retval; 7779 int isc_retval; 7780 u_int32_t param_len; 7781 struct scsi_per_res_out *cdb; 7782 struct ctl_lun *lun; 7783 struct scsi_per_res_out_parms* param; 7784 struct ctl_softc *softc; 7785 uint32_t residx; 7786 uint64_t res_key, sa_res_key; 7787 uint8_t type; 7788 union ctl_ha_msg persis_io; 7789 int i; 7790 7791 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7792 7793 retval = CTL_RETVAL_COMPLETE; 7794 7795 softc = control_softc; 7796 7797 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7798 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7799 7800 /* 7801 * We only support whole-LUN scope. The scope & type are ignored for 7802 * register, register and ignore existing key and clear. 7803 * We sometimes ignore scope and type on preempts too!! 7804 * Verify reservation type here as well. 7805 */ 7806 type = cdb->scope_type & SPR_TYPE_MASK; 7807 if ((cdb->action == SPRO_RESERVE) 7808 || (cdb->action == SPRO_RELEASE)) { 7809 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7810 ctl_set_invalid_field(/*ctsio*/ ctsio, 7811 /*sks_valid*/ 1, 7812 /*command*/ 1, 7813 /*field*/ 2, 7814 /*bit_valid*/ 1, 7815 /*bit*/ 4); 7816 ctl_done((union ctl_io *)ctsio); 7817 return (CTL_RETVAL_COMPLETE); 7818 } 7819 7820 if (type>8 || type==2 || type==4 || type==0) { 7821 ctl_set_invalid_field(/*ctsio*/ ctsio, 7822 /*sks_valid*/ 1, 7823 /*command*/ 1, 7824 /*field*/ 2, 7825 /*bit_valid*/ 1, 7826 /*bit*/ 0); 7827 ctl_done((union ctl_io *)ctsio); 7828 return (CTL_RETVAL_COMPLETE); 7829 } 7830 } 7831 7832 switch (cdb->action & SPRO_ACTION_MASK) { 7833 case SPRO_REGISTER: 7834 case SPRO_RESERVE: 7835 case SPRO_RELEASE: 7836 case SPRO_CLEAR: 7837 case SPRO_PREEMPT: 7838 case SPRO_REG_IGNO: 7839 break; 7840 case SPRO_REG_MOVE: 7841 case SPRO_PRE_ABO: 7842 default: 7843 ctl_set_invalid_field(/*ctsio*/ ctsio, 7844 /*sks_valid*/ 1, 7845 /*command*/ 1, 7846 /*field*/ 1, 7847 /*bit_valid*/ 1, 7848 /*bit*/ 0); 7849 ctl_done((union ctl_io *)ctsio); 7850 return (CTL_RETVAL_COMPLETE); 7851 break; /* NOTREACHED */ 7852 } 7853 7854 param_len = scsi_4btoul(cdb->length); 7855 7856 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7857 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7858 ctsio->kern_data_len = param_len; 7859 ctsio->kern_total_len = param_len; 7860 ctsio->kern_data_resid = 0; 7861 ctsio->kern_rel_offset = 0; 7862 ctsio->kern_sg_entries = 0; 7863 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7864 ctsio->be_move_done = ctl_config_move_done; 7865 ctl_datamove((union ctl_io *)ctsio); 7866 7867 return (CTL_RETVAL_COMPLETE); 7868 } 7869 7870 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7871 7872 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7873 res_key = scsi_8btou64(param->res_key.key); 7874 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7875 7876 /* 7877 * Validate the reservation key here except for SPRO_REG_IGNO 7878 * This must be done for all other service actions 7879 */ 7880 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 7881 mtx_lock(&softc->ctl_lock); 7882 if (lun->per_res[residx].registered) { 7883 if (memcmp(param->res_key.key, 7884 lun->per_res[residx].res_key.key, 7885 ctl_min(sizeof(param->res_key), 7886 sizeof(lun->per_res[residx].res_key))) != 0) { 7887 /* 7888 * The current key passed in doesn't match 7889 * the one the initiator previously 7890 * registered. 7891 */ 7892 mtx_unlock(&softc->ctl_lock); 7893 free(ctsio->kern_data_ptr, M_CTL); 7894 ctl_set_reservation_conflict(ctsio); 7895 ctl_done((union ctl_io *)ctsio); 7896 return (CTL_RETVAL_COMPLETE); 7897 } 7898 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 7899 /* 7900 * We are not registered 7901 */ 7902 mtx_unlock(&softc->ctl_lock); 7903 free(ctsio->kern_data_ptr, M_CTL); 7904 ctl_set_reservation_conflict(ctsio); 7905 ctl_done((union ctl_io *)ctsio); 7906 return (CTL_RETVAL_COMPLETE); 7907 } else if (res_key != 0) { 7908 /* 7909 * We are not registered and trying to register but 7910 * the register key isn't zero. 7911 */ 7912 mtx_unlock(&softc->ctl_lock); 7913 free(ctsio->kern_data_ptr, M_CTL); 7914 ctl_set_reservation_conflict(ctsio); 7915 ctl_done((union ctl_io *)ctsio); 7916 return (CTL_RETVAL_COMPLETE); 7917 } 7918 mtx_unlock(&softc->ctl_lock); 7919 } 7920 7921 switch (cdb->action & SPRO_ACTION_MASK) { 7922 case SPRO_REGISTER: 7923 case SPRO_REG_IGNO: { 7924 7925 #if 0 7926 printf("Registration received\n"); 7927 #endif 7928 7929 /* 7930 * We don't support any of these options, as we report in 7931 * the read capabilities request (see 7932 * ctl_persistent_reserve_in(), above). 7933 */ 7934 if ((param->flags & SPR_SPEC_I_PT) 7935 || (param->flags & SPR_ALL_TG_PT) 7936 || (param->flags & SPR_APTPL)) { 7937 int bit_ptr; 7938 7939 if (param->flags & SPR_APTPL) 7940 bit_ptr = 0; 7941 else if (param->flags & SPR_ALL_TG_PT) 7942 bit_ptr = 2; 7943 else /* SPR_SPEC_I_PT */ 7944 bit_ptr = 3; 7945 7946 free(ctsio->kern_data_ptr, M_CTL); 7947 ctl_set_invalid_field(ctsio, 7948 /*sks_valid*/ 1, 7949 /*command*/ 0, 7950 /*field*/ 20, 7951 /*bit_valid*/ 1, 7952 /*bit*/ bit_ptr); 7953 ctl_done((union ctl_io *)ctsio); 7954 return (CTL_RETVAL_COMPLETE); 7955 } 7956 7957 mtx_lock(&softc->ctl_lock); 7958 7959 /* 7960 * The initiator wants to clear the 7961 * key/unregister. 7962 */ 7963 if (sa_res_key == 0) { 7964 if ((res_key == 0 7965 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 7966 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 7967 && !lun->per_res[residx].registered)) { 7968 mtx_unlock(&softc->ctl_lock); 7969 goto done; 7970 } 7971 7972 lun->per_res[residx].registered = 0; 7973 memset(&lun->per_res[residx].res_key, 7974 0, sizeof(lun->per_res[residx].res_key)); 7975 lun->pr_key_count--; 7976 7977 if (residx == lun->pr_res_idx) { 7978 lun->flags &= ~CTL_LUN_PR_RESERVED; 7979 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 7980 7981 if ((lun->res_type == SPR_TYPE_WR_EX_RO 7982 || lun->res_type == SPR_TYPE_EX_AC_RO) 7983 && lun->pr_key_count) { 7984 /* 7985 * If the reservation is a registrants 7986 * only type we need to generate a UA 7987 * for other registered inits. The 7988 * sense code should be RESERVATIONS 7989 * RELEASED 7990 */ 7991 7992 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 7993 if (lun->per_res[ 7994 i+persis_offset].registered 7995 == 0) 7996 continue; 7997 lun->pending_sense[i 7998 ].ua_pending |= 7999 CTL_UA_RES_RELEASE; 8000 } 8001 } 8002 lun->res_type = 0; 8003 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8004 if (lun->pr_key_count==0) { 8005 lun->flags &= ~CTL_LUN_PR_RESERVED; 8006 lun->res_type = 0; 8007 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8008 } 8009 } 8010 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8011 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8012 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8013 persis_io.pr.pr_info.residx = residx; 8014 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8015 &persis_io, sizeof(persis_io), 0 )) > 8016 CTL_HA_STATUS_SUCCESS) { 8017 printf("CTL:Persis Out error returned from " 8018 "ctl_ha_msg_send %d\n", isc_retval); 8019 } 8020 mtx_unlock(&softc->ctl_lock); 8021 } else /* sa_res_key != 0 */ { 8022 8023 /* 8024 * If we aren't registered currently then increment 8025 * the key count and set the registered flag. 8026 */ 8027 if (!lun->per_res[residx].registered) { 8028 lun->pr_key_count++; 8029 lun->per_res[residx].registered = 1; 8030 } 8031 8032 memcpy(&lun->per_res[residx].res_key, 8033 param->serv_act_res_key, 8034 ctl_min(sizeof(param->serv_act_res_key), 8035 sizeof(lun->per_res[residx].res_key))); 8036 8037 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8038 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8039 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8040 persis_io.pr.pr_info.residx = residx; 8041 memcpy(persis_io.pr.pr_info.sa_res_key, 8042 param->serv_act_res_key, 8043 sizeof(param->serv_act_res_key)); 8044 mtx_unlock(&softc->ctl_lock); 8045 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8046 &persis_io, sizeof(persis_io), 0)) > 8047 CTL_HA_STATUS_SUCCESS) { 8048 printf("CTL:Persis Out error returned from " 8049 "ctl_ha_msg_send %d\n", isc_retval); 8050 } 8051 } 8052 lun->PRGeneration++; 8053 8054 break; 8055 } 8056 case SPRO_RESERVE: 8057 #if 0 8058 printf("Reserve executed type %d\n", type); 8059 #endif 8060 mtx_lock(&softc->ctl_lock); 8061 if (lun->flags & CTL_LUN_PR_RESERVED) { 8062 /* 8063 * if this isn't the reservation holder and it's 8064 * not a "all registrants" type or if the type is 8065 * different then we have a conflict 8066 */ 8067 if ((lun->pr_res_idx != residx 8068 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8069 || lun->res_type != type) { 8070 mtx_unlock(&softc->ctl_lock); 8071 free(ctsio->kern_data_ptr, M_CTL); 8072 ctl_set_reservation_conflict(ctsio); 8073 ctl_done((union ctl_io *)ctsio); 8074 return (CTL_RETVAL_COMPLETE); 8075 } 8076 } else /* create a reservation */ { 8077 /* 8078 * If it's not an "all registrants" type record 8079 * reservation holder 8080 */ 8081 if (type != SPR_TYPE_WR_EX_AR 8082 && type != SPR_TYPE_EX_AC_AR) 8083 lun->pr_res_idx = residx; /* Res holder */ 8084 else 8085 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8086 8087 lun->flags |= CTL_LUN_PR_RESERVED; 8088 lun->res_type = type; 8089 8090 mtx_unlock(&softc->ctl_lock); 8091 8092 /* send msg to other side */ 8093 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8094 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8095 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8096 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8097 persis_io.pr.pr_info.res_type = type; 8098 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8099 &persis_io, sizeof(persis_io), 0)) > 8100 CTL_HA_STATUS_SUCCESS) { 8101 printf("CTL:Persis Out error returned from " 8102 "ctl_ha_msg_send %d\n", isc_retval); 8103 } 8104 } 8105 break; 8106 8107 case SPRO_RELEASE: 8108 mtx_lock(&softc->ctl_lock); 8109 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8110 /* No reservation exists return good status */ 8111 mtx_unlock(&softc->ctl_lock); 8112 goto done; 8113 } 8114 /* 8115 * Is this nexus a reservation holder? 8116 */ 8117 if (lun->pr_res_idx != residx 8118 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8119 /* 8120 * not a res holder return good status but 8121 * do nothing 8122 */ 8123 mtx_unlock(&softc->ctl_lock); 8124 goto done; 8125 } 8126 8127 if (lun->res_type != type) { 8128 mtx_unlock(&softc->ctl_lock); 8129 free(ctsio->kern_data_ptr, M_CTL); 8130 ctl_set_illegal_pr_release(ctsio); 8131 ctl_done((union ctl_io *)ctsio); 8132 return (CTL_RETVAL_COMPLETE); 8133 } 8134 8135 /* okay to release */ 8136 lun->flags &= ~CTL_LUN_PR_RESERVED; 8137 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8138 lun->res_type = 0; 8139 8140 /* 8141 * if this isn't an exclusive access 8142 * res generate UA for all other 8143 * registrants. 8144 */ 8145 if (type != SPR_TYPE_EX_AC 8146 && type != SPR_TYPE_WR_EX) { 8147 /* 8148 * temporarily unregister so we don't generate UA 8149 */ 8150 lun->per_res[residx].registered = 0; 8151 8152 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8153 if (lun->per_res[i+persis_offset].registered 8154 == 0) 8155 continue; 8156 lun->pending_sense[i].ua_pending |= 8157 CTL_UA_RES_RELEASE; 8158 } 8159 8160 lun->per_res[residx].registered = 1; 8161 } 8162 mtx_unlock(&softc->ctl_lock); 8163 /* Send msg to other side */ 8164 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8165 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8166 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8167 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8168 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8169 printf("CTL:Persis Out error returned from " 8170 "ctl_ha_msg_send %d\n", isc_retval); 8171 } 8172 break; 8173 8174 case SPRO_CLEAR: 8175 /* send msg to other side */ 8176 8177 mtx_lock(&softc->ctl_lock); 8178 lun->flags &= ~CTL_LUN_PR_RESERVED; 8179 lun->res_type = 0; 8180 lun->pr_key_count = 0; 8181 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8182 8183 8184 memset(&lun->per_res[residx].res_key, 8185 0, sizeof(lun->per_res[residx].res_key)); 8186 lun->per_res[residx].registered = 0; 8187 8188 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8189 if (lun->per_res[i].registered) { 8190 if (!persis_offset && i < CTL_MAX_INITIATORS) 8191 lun->pending_sense[i].ua_pending |= 8192 CTL_UA_RES_PREEMPT; 8193 else if (persis_offset && i >= persis_offset) 8194 lun->pending_sense[i-persis_offset 8195 ].ua_pending |= CTL_UA_RES_PREEMPT; 8196 8197 memset(&lun->per_res[i].res_key, 8198 0, sizeof(struct scsi_per_res_key)); 8199 lun->per_res[i].registered = 0; 8200 } 8201 lun->PRGeneration++; 8202 mtx_unlock(&softc->ctl_lock); 8203 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8204 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8205 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8206 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8207 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8208 printf("CTL:Persis Out error returned from " 8209 "ctl_ha_msg_send %d\n", isc_retval); 8210 } 8211 break; 8212 8213 case SPRO_PREEMPT: { 8214 int nretval; 8215 8216 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8217 residx, ctsio, cdb, param); 8218 if (nretval != 0) 8219 return (CTL_RETVAL_COMPLETE); 8220 break; 8221 } 8222 case SPRO_REG_MOVE: 8223 case SPRO_PRE_ABO: 8224 default: 8225 free(ctsio->kern_data_ptr, M_CTL); 8226 ctl_set_invalid_field(/*ctsio*/ ctsio, 8227 /*sks_valid*/ 1, 8228 /*command*/ 1, 8229 /*field*/ 1, 8230 /*bit_valid*/ 1, 8231 /*bit*/ 0); 8232 ctl_done((union ctl_io *)ctsio); 8233 return (CTL_RETVAL_COMPLETE); 8234 break; /* NOTREACHED */ 8235 } 8236 8237 done: 8238 free(ctsio->kern_data_ptr, M_CTL); 8239 ctl_set_success(ctsio); 8240 ctl_done((union ctl_io *)ctsio); 8241 8242 return (retval); 8243 } 8244 8245 /* 8246 * This routine is for handling a message from the other SC pertaining to 8247 * persistent reserve out. All the error checking will have been done 8248 * so only perorming the action need be done here to keep the two 8249 * in sync. 8250 */ 8251 static void 8252 ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8253 { 8254 struct ctl_lun *lun; 8255 struct ctl_softc *softc; 8256 int i; 8257 8258 softc = control_softc; 8259 8260 mtx_lock(&softc->ctl_lock); 8261 8262 lun = softc->ctl_luns[msg->hdr.nexus.targ_lun]; 8263 switch(msg->pr.pr_info.action) { 8264 case CTL_PR_REG_KEY: 8265 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8266 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8267 lun->pr_key_count++; 8268 } 8269 lun->PRGeneration++; 8270 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8271 msg->pr.pr_info.sa_res_key, 8272 sizeof(struct scsi_per_res_key)); 8273 break; 8274 8275 case CTL_PR_UNREG_KEY: 8276 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8277 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8278 0, sizeof(struct scsi_per_res_key)); 8279 lun->pr_key_count--; 8280 8281 /* XXX Need to see if the reservation has been released */ 8282 /* if so do we need to generate UA? */ 8283 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8284 lun->flags &= ~CTL_LUN_PR_RESERVED; 8285 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8286 8287 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8288 || lun->res_type == SPR_TYPE_EX_AC_RO) 8289 && lun->pr_key_count) { 8290 /* 8291 * If the reservation is a registrants 8292 * only type we need to generate a UA 8293 * for other registered inits. The 8294 * sense code should be RESERVATIONS 8295 * RELEASED 8296 */ 8297 8298 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8299 if (lun->per_res[i+ 8300 persis_offset].registered == 0) 8301 continue; 8302 8303 lun->pending_sense[i 8304 ].ua_pending |= 8305 CTL_UA_RES_RELEASE; 8306 } 8307 } 8308 lun->res_type = 0; 8309 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8310 if (lun->pr_key_count==0) { 8311 lun->flags &= ~CTL_LUN_PR_RESERVED; 8312 lun->res_type = 0; 8313 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8314 } 8315 } 8316 lun->PRGeneration++; 8317 break; 8318 8319 case CTL_PR_RESERVE: 8320 lun->flags |= CTL_LUN_PR_RESERVED; 8321 lun->res_type = msg->pr.pr_info.res_type; 8322 lun->pr_res_idx = msg->pr.pr_info.residx; 8323 8324 break; 8325 8326 case CTL_PR_RELEASE: 8327 /* 8328 * if this isn't an exclusive access res generate UA for all 8329 * other registrants. 8330 */ 8331 if (lun->res_type != SPR_TYPE_EX_AC 8332 && lun->res_type != SPR_TYPE_WR_EX) { 8333 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8334 if (lun->per_res[i+persis_offset].registered) 8335 lun->pending_sense[i].ua_pending |= 8336 CTL_UA_RES_RELEASE; 8337 } 8338 8339 lun->flags &= ~CTL_LUN_PR_RESERVED; 8340 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8341 lun->res_type = 0; 8342 break; 8343 8344 case CTL_PR_PREEMPT: 8345 ctl_pro_preempt_other(lun, msg); 8346 break; 8347 case CTL_PR_CLEAR: 8348 lun->flags &= ~CTL_LUN_PR_RESERVED; 8349 lun->res_type = 0; 8350 lun->pr_key_count = 0; 8351 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8352 8353 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8354 if (lun->per_res[i].registered == 0) 8355 continue; 8356 if (!persis_offset 8357 && i < CTL_MAX_INITIATORS) 8358 lun->pending_sense[i].ua_pending |= 8359 CTL_UA_RES_PREEMPT; 8360 else if (persis_offset 8361 && i >= persis_offset) 8362 lun->pending_sense[i-persis_offset].ua_pending|= 8363 CTL_UA_RES_PREEMPT; 8364 memset(&lun->per_res[i].res_key, 0, 8365 sizeof(struct scsi_per_res_key)); 8366 lun->per_res[i].registered = 0; 8367 } 8368 lun->PRGeneration++; 8369 break; 8370 } 8371 8372 mtx_unlock(&softc->ctl_lock); 8373 } 8374 8375 int 8376 ctl_read_write(struct ctl_scsiio *ctsio) 8377 { 8378 struct ctl_lun *lun; 8379 struct ctl_lba_len lbalen; 8380 uint64_t lba; 8381 uint32_t num_blocks; 8382 int reladdr, fua, dpo, ebp; 8383 int retval; 8384 int isread; 8385 8386 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8387 8388 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8389 8390 reladdr = 0; 8391 fua = 0; 8392 dpo = 0; 8393 ebp = 0; 8394 8395 retval = CTL_RETVAL_COMPLETE; 8396 8397 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8398 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8399 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8400 uint32_t residx; 8401 8402 /* 8403 * XXX KDM need a lock here. 8404 */ 8405 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8406 if ((lun->res_type == SPR_TYPE_EX_AC 8407 && residx != lun->pr_res_idx) 8408 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8409 || lun->res_type == SPR_TYPE_EX_AC_AR) 8410 && !lun->per_res[residx].registered)) { 8411 ctl_set_reservation_conflict(ctsio); 8412 ctl_done((union ctl_io *)ctsio); 8413 return (CTL_RETVAL_COMPLETE); 8414 } 8415 } 8416 8417 switch (ctsio->cdb[0]) { 8418 case READ_6: 8419 case WRITE_6: { 8420 struct scsi_rw_6 *cdb; 8421 8422 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8423 8424 lba = scsi_3btoul(cdb->addr); 8425 /* only 5 bits are valid in the most significant address byte */ 8426 lba &= 0x1fffff; 8427 num_blocks = cdb->length; 8428 /* 8429 * This is correct according to SBC-2. 8430 */ 8431 if (num_blocks == 0) 8432 num_blocks = 256; 8433 break; 8434 } 8435 case READ_10: 8436 case WRITE_10: { 8437 struct scsi_rw_10 *cdb; 8438 8439 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8440 8441 if (cdb->byte2 & SRW10_RELADDR) 8442 reladdr = 1; 8443 if (cdb->byte2 & SRW10_FUA) 8444 fua = 1; 8445 if (cdb->byte2 & SRW10_DPO) 8446 dpo = 1; 8447 8448 if ((cdb->opcode == WRITE_10) 8449 && (cdb->byte2 & SRW10_EBP)) 8450 ebp = 1; 8451 8452 lba = scsi_4btoul(cdb->addr); 8453 num_blocks = scsi_2btoul(cdb->length); 8454 break; 8455 } 8456 case WRITE_VERIFY_10: { 8457 struct scsi_write_verify_10 *cdb; 8458 8459 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8460 8461 /* 8462 * XXX KDM we should do actual write verify support at some 8463 * point. This is obviously fake, we're just translating 8464 * things to a write. So we don't even bother checking the 8465 * BYTCHK field, since we don't do any verification. If 8466 * the user asks for it, we'll just pretend we did it. 8467 */ 8468 if (cdb->byte2 & SWV_DPO) 8469 dpo = 1; 8470 8471 lba = scsi_4btoul(cdb->addr); 8472 num_blocks = scsi_2btoul(cdb->length); 8473 break; 8474 } 8475 case READ_12: 8476 case WRITE_12: { 8477 struct scsi_rw_12 *cdb; 8478 8479 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8480 8481 if (cdb->byte2 & SRW12_RELADDR) 8482 reladdr = 1; 8483 if (cdb->byte2 & SRW12_FUA) 8484 fua = 1; 8485 if (cdb->byte2 & SRW12_DPO) 8486 dpo = 1; 8487 lba = scsi_4btoul(cdb->addr); 8488 num_blocks = scsi_4btoul(cdb->length); 8489 break; 8490 } 8491 case WRITE_VERIFY_12: { 8492 struct scsi_write_verify_12 *cdb; 8493 8494 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8495 8496 if (cdb->byte2 & SWV_DPO) 8497 dpo = 1; 8498 8499 lba = scsi_4btoul(cdb->addr); 8500 num_blocks = scsi_4btoul(cdb->length); 8501 8502 break; 8503 } 8504 case READ_16: 8505 case WRITE_16: { 8506 struct scsi_rw_16 *cdb; 8507 8508 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8509 8510 if (cdb->byte2 & SRW12_RELADDR) 8511 reladdr = 1; 8512 if (cdb->byte2 & SRW12_FUA) 8513 fua = 1; 8514 if (cdb->byte2 & SRW12_DPO) 8515 dpo = 1; 8516 8517 lba = scsi_8btou64(cdb->addr); 8518 num_blocks = scsi_4btoul(cdb->length); 8519 break; 8520 } 8521 case WRITE_VERIFY_16: { 8522 struct scsi_write_verify_16 *cdb; 8523 8524 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8525 8526 if (cdb->byte2 & SWV_DPO) 8527 dpo = 1; 8528 8529 lba = scsi_8btou64(cdb->addr); 8530 num_blocks = scsi_4btoul(cdb->length); 8531 break; 8532 } 8533 default: 8534 /* 8535 * We got a command we don't support. This shouldn't 8536 * happen, commands should be filtered out above us. 8537 */ 8538 ctl_set_invalid_opcode(ctsio); 8539 ctl_done((union ctl_io *)ctsio); 8540 8541 return (CTL_RETVAL_COMPLETE); 8542 break; /* NOTREACHED */ 8543 } 8544 8545 /* 8546 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8547 * interesting for us, but if RAIDCore is in write-back mode, 8548 * getting it to do write-through for a particular transaction may 8549 * not be possible. 8550 */ 8551 /* 8552 * We don't support relative addressing. That also requires 8553 * supporting linked commands, which we don't do. 8554 */ 8555 if (reladdr != 0) { 8556 ctl_set_invalid_field(ctsio, 8557 /*sks_valid*/ 1, 8558 /*command*/ 1, 8559 /*field*/ 1, 8560 /*bit_valid*/ 1, 8561 /*bit*/ 0); 8562 ctl_done((union ctl_io *)ctsio); 8563 return (CTL_RETVAL_COMPLETE); 8564 } 8565 8566 /* 8567 * The first check is to make sure we're in bounds, the second 8568 * check is to catch wrap-around problems. If the lba + num blocks 8569 * is less than the lba, then we've wrapped around and the block 8570 * range is invalid anyway. 8571 */ 8572 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8573 || ((lba + num_blocks) < lba)) { 8574 ctl_set_lba_out_of_range(ctsio); 8575 ctl_done((union ctl_io *)ctsio); 8576 return (CTL_RETVAL_COMPLETE); 8577 } 8578 8579 /* 8580 * According to SBC-3, a transfer length of 0 is not an error. 8581 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8582 * translates to 256 blocks for those commands. 8583 */ 8584 if (num_blocks == 0) { 8585 ctl_set_success(ctsio); 8586 ctl_done((union ctl_io *)ctsio); 8587 return (CTL_RETVAL_COMPLETE); 8588 } 8589 8590 lbalen.lba = lba; 8591 lbalen.len = num_blocks; 8592 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8593 sizeof(lbalen)); 8594 8595 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8596 8597 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8598 8599 return (retval); 8600 } 8601 8602 int 8603 ctl_report_luns(struct ctl_scsiio *ctsio) 8604 { 8605 struct scsi_report_luns *cdb; 8606 struct scsi_report_luns_data *lun_data; 8607 struct ctl_lun *lun, *request_lun; 8608 int num_luns, retval; 8609 uint32_t alloc_len, lun_datalen; 8610 int num_filled, well_known; 8611 uint32_t initidx; 8612 8613 retval = CTL_RETVAL_COMPLETE; 8614 well_known = 0; 8615 8616 cdb = (struct scsi_report_luns *)ctsio->cdb; 8617 8618 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8619 8620 mtx_lock(&control_softc->ctl_lock); 8621 num_luns = control_softc->num_luns; 8622 mtx_unlock(&control_softc->ctl_lock); 8623 8624 switch (cdb->select_report) { 8625 case RPL_REPORT_DEFAULT: 8626 case RPL_REPORT_ALL: 8627 break; 8628 case RPL_REPORT_WELLKNOWN: 8629 well_known = 1; 8630 num_luns = 0; 8631 break; 8632 default: 8633 ctl_set_invalid_field(ctsio, 8634 /*sks_valid*/ 1, 8635 /*command*/ 1, 8636 /*field*/ 2, 8637 /*bit_valid*/ 0, 8638 /*bit*/ 0); 8639 ctl_done((union ctl_io *)ctsio); 8640 return (retval); 8641 break; /* NOTREACHED */ 8642 } 8643 8644 alloc_len = scsi_4btoul(cdb->length); 8645 /* 8646 * The initiator has to allocate at least 16 bytes for this request, 8647 * so he can at least get the header and the first LUN. Otherwise 8648 * we reject the request (per SPC-3 rev 14, section 6.21). 8649 */ 8650 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8651 sizeof(struct scsi_report_luns_lundata))) { 8652 ctl_set_invalid_field(ctsio, 8653 /*sks_valid*/ 1, 8654 /*command*/ 1, 8655 /*field*/ 6, 8656 /*bit_valid*/ 0, 8657 /*bit*/ 0); 8658 ctl_done((union ctl_io *)ctsio); 8659 return (retval); 8660 } 8661 8662 request_lun = (struct ctl_lun *) 8663 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8664 8665 lun_datalen = sizeof(*lun_data) + 8666 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8667 8668 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 8669 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8670 ctsio->kern_sg_entries = 0; 8671 8672 if (lun_datalen < alloc_len) { 8673 ctsio->residual = alloc_len - lun_datalen; 8674 ctsio->kern_data_len = lun_datalen; 8675 ctsio->kern_total_len = lun_datalen; 8676 } else { 8677 ctsio->residual = 0; 8678 ctsio->kern_data_len = alloc_len; 8679 ctsio->kern_total_len = alloc_len; 8680 } 8681 ctsio->kern_data_resid = 0; 8682 ctsio->kern_rel_offset = 0; 8683 ctsio->kern_sg_entries = 0; 8684 8685 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8686 8687 /* 8688 * We set this to the actual data length, regardless of how much 8689 * space we actually have to return results. If the user looks at 8690 * this value, he'll know whether or not he allocated enough space 8691 * and reissue the command if necessary. We don't support well 8692 * known logical units, so if the user asks for that, return none. 8693 */ 8694 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8695 8696 mtx_lock(&control_softc->ctl_lock); 8697 for (num_filled = 0, lun = STAILQ_FIRST(&control_softc->lun_list); 8698 (lun != NULL) && (num_filled < num_luns); 8699 lun = STAILQ_NEXT(lun, links)) { 8700 8701 if (lun->lun <= 0xff) { 8702 /* 8703 * Peripheral addressing method, bus number 0. 8704 */ 8705 lun_data->luns[num_filled].lundata[0] = 8706 RPL_LUNDATA_ATYP_PERIPH; 8707 lun_data->luns[num_filled].lundata[1] = lun->lun; 8708 num_filled++; 8709 } else if (lun->lun <= 0x3fff) { 8710 /* 8711 * Flat addressing method. 8712 */ 8713 lun_data->luns[num_filled].lundata[0] = 8714 RPL_LUNDATA_ATYP_FLAT | 8715 (lun->lun & RPL_LUNDATA_FLAT_LUN_MASK); 8716 #ifdef OLDCTLHEADERS 8717 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8718 (lun->lun & SRLD_BUS_LUN_MASK); 8719 #endif 8720 lun_data->luns[num_filled].lundata[1] = 8721 #ifdef OLDCTLHEADERS 8722 lun->lun >> SRLD_BUS_LUN_BITS; 8723 #endif 8724 lun->lun >> RPL_LUNDATA_FLAT_LUN_BITS; 8725 num_filled++; 8726 } else { 8727 printf("ctl_report_luns: bogus LUN number %jd, " 8728 "skipping\n", (intmax_t)lun->lun); 8729 } 8730 /* 8731 * According to SPC-3, rev 14 section 6.21: 8732 * 8733 * "The execution of a REPORT LUNS command to any valid and 8734 * installed logical unit shall clear the REPORTED LUNS DATA 8735 * HAS CHANGED unit attention condition for all logical 8736 * units of that target with respect to the requesting 8737 * initiator. A valid and installed logical unit is one 8738 * having a PERIPHERAL QUALIFIER of 000b in the standard 8739 * INQUIRY data (see 6.4.2)." 8740 * 8741 * If request_lun is NULL, the LUN this report luns command 8742 * was issued to is either disabled or doesn't exist. In that 8743 * case, we shouldn't clear any pending lun change unit 8744 * attention. 8745 */ 8746 if (request_lun != NULL) 8747 lun->pending_sense[initidx].ua_pending &= 8748 ~CTL_UA_LUN_CHANGE; 8749 } 8750 mtx_unlock(&control_softc->ctl_lock); 8751 8752 /* 8753 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8754 * this request. 8755 */ 8756 ctsio->scsi_status = SCSI_STATUS_OK; 8757 8758 ctsio->be_move_done = ctl_config_move_done; 8759 ctl_datamove((union ctl_io *)ctsio); 8760 8761 return (retval); 8762 } 8763 8764 int 8765 ctl_request_sense(struct ctl_scsiio *ctsio) 8766 { 8767 struct scsi_request_sense *cdb; 8768 struct scsi_sense_data *sense_ptr; 8769 struct ctl_lun *lun; 8770 uint32_t initidx; 8771 int have_error; 8772 scsi_sense_data_type sense_format; 8773 8774 cdb = (struct scsi_request_sense *)ctsio->cdb; 8775 8776 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8777 8778 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 8779 8780 /* 8781 * Determine which sense format the user wants. 8782 */ 8783 if (cdb->byte2 & SRS_DESC) 8784 sense_format = SSD_TYPE_DESC; 8785 else 8786 sense_format = SSD_TYPE_FIXED; 8787 8788 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 8789 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 8790 ctsio->kern_sg_entries = 0; 8791 8792 /* 8793 * struct scsi_sense_data, which is currently set to 256 bytes, is 8794 * larger than the largest allowed value for the length field in the 8795 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 8796 */ 8797 ctsio->residual = 0; 8798 ctsio->kern_data_len = cdb->length; 8799 ctsio->kern_total_len = cdb->length; 8800 8801 ctsio->kern_data_resid = 0; 8802 ctsio->kern_rel_offset = 0; 8803 ctsio->kern_sg_entries = 0; 8804 8805 /* 8806 * If we don't have a LUN, we don't have any pending sense. 8807 */ 8808 if (lun == NULL) 8809 goto no_sense; 8810 8811 have_error = 0; 8812 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8813 /* 8814 * Check for pending sense, and then for pending unit attentions. 8815 * Pending sense gets returned first, then pending unit attentions. 8816 */ 8817 mtx_lock(&lun->ctl_softc->ctl_lock); 8818 if (ctl_is_set(lun->have_ca, initidx)) { 8819 scsi_sense_data_type stored_format; 8820 8821 /* 8822 * Check to see which sense format was used for the stored 8823 * sense data. 8824 */ 8825 stored_format = scsi_sense_type( 8826 &lun->pending_sense[initidx].sense); 8827 8828 /* 8829 * If the user requested a different sense format than the 8830 * one we stored, then we need to convert it to the other 8831 * format. If we're going from descriptor to fixed format 8832 * sense data, we may lose things in translation, depending 8833 * on what options were used. 8834 * 8835 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 8836 * for some reason we'll just copy it out as-is. 8837 */ 8838 if ((stored_format == SSD_TYPE_FIXED) 8839 && (sense_format == SSD_TYPE_DESC)) 8840 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 8841 &lun->pending_sense[initidx].sense, 8842 (struct scsi_sense_data_desc *)sense_ptr); 8843 else if ((stored_format == SSD_TYPE_DESC) 8844 && (sense_format == SSD_TYPE_FIXED)) 8845 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 8846 &lun->pending_sense[initidx].sense, 8847 (struct scsi_sense_data_fixed *)sense_ptr); 8848 else 8849 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 8850 ctl_min(sizeof(*sense_ptr), 8851 sizeof(lun->pending_sense[initidx].sense))); 8852 8853 ctl_clear_mask(lun->have_ca, initidx); 8854 have_error = 1; 8855 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 8856 ctl_ua_type ua_type; 8857 8858 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 8859 sense_ptr, sense_format); 8860 if (ua_type != CTL_UA_NONE) { 8861 have_error = 1; 8862 /* We're reporting this UA, so clear it */ 8863 lun->pending_sense[initidx].ua_pending &= ~ua_type; 8864 } 8865 } 8866 mtx_unlock(&lun->ctl_softc->ctl_lock); 8867 8868 /* 8869 * We already have a pending error, return it. 8870 */ 8871 if (have_error != 0) { 8872 /* 8873 * We report the SCSI status as OK, since the status of the 8874 * request sense command itself is OK. 8875 */ 8876 ctsio->scsi_status = SCSI_STATUS_OK; 8877 8878 /* 8879 * We report 0 for the sense length, because we aren't doing 8880 * autosense in this case. We're reporting sense as 8881 * parameter data. 8882 */ 8883 ctsio->sense_len = 0; 8884 8885 ctsio->be_move_done = ctl_config_move_done; 8886 ctl_datamove((union ctl_io *)ctsio); 8887 8888 return (CTL_RETVAL_COMPLETE); 8889 } 8890 8891 no_sense: 8892 8893 /* 8894 * No sense information to report, so we report that everything is 8895 * okay. 8896 */ 8897 ctl_set_sense_data(sense_ptr, 8898 lun, 8899 sense_format, 8900 /*current_error*/ 1, 8901 /*sense_key*/ SSD_KEY_NO_SENSE, 8902 /*asc*/ 0x00, 8903 /*ascq*/ 0x00, 8904 SSD_ELEM_NONE); 8905 8906 ctsio->scsi_status = SCSI_STATUS_OK; 8907 8908 /* 8909 * We report 0 for the sense length, because we aren't doing 8910 * autosense in this case. We're reporting sense as parameter data. 8911 */ 8912 ctsio->sense_len = 0; 8913 ctsio->be_move_done = ctl_config_move_done; 8914 ctl_datamove((union ctl_io *)ctsio); 8915 8916 return (CTL_RETVAL_COMPLETE); 8917 } 8918 8919 int 8920 ctl_tur(struct ctl_scsiio *ctsio) 8921 { 8922 struct ctl_lun *lun; 8923 8924 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8925 8926 CTL_DEBUG_PRINT(("ctl_tur\n")); 8927 8928 if (lun == NULL) 8929 return (-EINVAL); 8930 8931 ctsio->scsi_status = SCSI_STATUS_OK; 8932 ctsio->io_hdr.status = CTL_SUCCESS; 8933 8934 ctl_done((union ctl_io *)ctsio); 8935 8936 return (CTL_RETVAL_COMPLETE); 8937 } 8938 8939 #ifdef notyet 8940 static int 8941 ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 8942 { 8943 8944 } 8945 #endif 8946 8947 static int 8948 ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 8949 { 8950 struct scsi_vpd_supported_pages *pages; 8951 int sup_page_size; 8952 struct ctl_lun *lun; 8953 8954 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8955 8956 sup_page_size = sizeof(struct scsi_vpd_supported_pages) + 8957 SCSI_EVPD_NUM_SUPPORTED_PAGES; 8958 /* 8959 * XXX KDM GFP_??? We probably don't want to wait here, 8960 * unless we end up having a process/thread context. 8961 */ 8962 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 8963 if (ctsio->kern_data_ptr == NULL) { 8964 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8965 ctsio->scsi_status = SCSI_STATUS_BUSY; 8966 ctl_done((union ctl_io *)ctsio); 8967 return (CTL_RETVAL_COMPLETE); 8968 } 8969 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 8970 ctsio->kern_sg_entries = 0; 8971 8972 if (sup_page_size < alloc_len) { 8973 ctsio->residual = alloc_len - sup_page_size; 8974 ctsio->kern_data_len = sup_page_size; 8975 ctsio->kern_total_len = sup_page_size; 8976 } else { 8977 ctsio->residual = 0; 8978 ctsio->kern_data_len = alloc_len; 8979 ctsio->kern_total_len = alloc_len; 8980 } 8981 ctsio->kern_data_resid = 0; 8982 ctsio->kern_rel_offset = 0; 8983 ctsio->kern_sg_entries = 0; 8984 8985 /* 8986 * The control device is always connected. The disk device, on the 8987 * other hand, may not be online all the time. Need to change this 8988 * to figure out whether the disk device is actually online or not. 8989 */ 8990 if (lun != NULL) 8991 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 8992 lun->be_lun->lun_type; 8993 else 8994 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 8995 8996 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 8997 /* Supported VPD pages */ 8998 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 8999 /* Serial Number */ 9000 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9001 /* Device Identification */ 9002 pages->page_list[2] = SVPD_DEVICE_ID; 9003 9004 ctsio->scsi_status = SCSI_STATUS_OK; 9005 9006 ctsio->be_move_done = ctl_config_move_done; 9007 ctl_datamove((union ctl_io *)ctsio); 9008 9009 return (CTL_RETVAL_COMPLETE); 9010 } 9011 9012 static int 9013 ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9014 { 9015 struct scsi_vpd_unit_serial_number *sn_ptr; 9016 struct ctl_lun *lun; 9017 #ifndef CTL_USE_BACKEND_SN 9018 char tmpstr[32]; 9019 #endif 9020 9021 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9022 9023 /* XXX KDM which malloc flags here?? */ 9024 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9025 if (ctsio->kern_data_ptr == NULL) { 9026 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9027 ctsio->scsi_status = SCSI_STATUS_BUSY; 9028 ctl_done((union ctl_io *)ctsio); 9029 return (CTL_RETVAL_COMPLETE); 9030 } 9031 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9032 ctsio->kern_sg_entries = 0; 9033 9034 if (sizeof(*sn_ptr) < alloc_len) { 9035 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9036 ctsio->kern_data_len = sizeof(*sn_ptr); 9037 ctsio->kern_total_len = sizeof(*sn_ptr); 9038 } else { 9039 ctsio->residual = 0; 9040 ctsio->kern_data_len = alloc_len; 9041 ctsio->kern_total_len = alloc_len; 9042 } 9043 ctsio->kern_data_resid = 0; 9044 ctsio->kern_rel_offset = 0; 9045 ctsio->kern_sg_entries = 0; 9046 9047 /* 9048 * The control device is always connected. The disk device, on the 9049 * other hand, may not be online all the time. Need to change this 9050 * to figure out whether the disk device is actually online or not. 9051 */ 9052 if (lun != NULL) 9053 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9054 lun->be_lun->lun_type; 9055 else 9056 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9057 9058 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9059 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9060 #ifdef CTL_USE_BACKEND_SN 9061 /* 9062 * If we don't have a LUN, we just leave the serial number as 9063 * all spaces. 9064 */ 9065 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9066 if (lun != NULL) { 9067 strncpy((char *)sn_ptr->serial_num, 9068 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9069 } 9070 #else 9071 /* 9072 * Note that we're using a non-unique serial number here, 9073 */ 9074 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9075 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9076 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9077 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9078 #endif 9079 ctsio->scsi_status = SCSI_STATUS_OK; 9080 9081 ctsio->be_move_done = ctl_config_move_done; 9082 ctl_datamove((union ctl_io *)ctsio); 9083 9084 return (CTL_RETVAL_COMPLETE); 9085 } 9086 9087 9088 static int 9089 ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9090 { 9091 struct scsi_vpd_device_id *devid_ptr; 9092 struct scsi_vpd_id_descriptor *desc, *desc1; 9093 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9094 struct scsi_vpd_id_t10 *t10id; 9095 struct ctl_softc *ctl_softc; 9096 struct ctl_lun *lun; 9097 struct ctl_frontend *fe; 9098 #ifndef CTL_USE_BACKEND_SN 9099 char tmpstr[32]; 9100 #endif /* CTL_USE_BACKEND_SN */ 9101 int devid_len; 9102 9103 ctl_softc = control_softc; 9104 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9105 9106 devid_len = sizeof(struct scsi_vpd_device_id) + 9107 sizeof(struct scsi_vpd_id_descriptor) + 9108 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9109 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9110 sizeof(struct scsi_vpd_id_descriptor) + 9111 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9112 sizeof(struct scsi_vpd_id_descriptor) + 9113 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9114 9115 /* XXX KDM which malloc flags here ?? */ 9116 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 9117 if (ctsio->kern_data_ptr == NULL) { 9118 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9119 ctsio->scsi_status = SCSI_STATUS_BUSY; 9120 ctl_done((union ctl_io *)ctsio); 9121 return (CTL_RETVAL_COMPLETE); 9122 } 9123 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9124 ctsio->kern_sg_entries = 0; 9125 9126 if (devid_len < alloc_len) { 9127 ctsio->residual = alloc_len - devid_len; 9128 ctsio->kern_data_len = devid_len; 9129 ctsio->kern_total_len = devid_len; 9130 } else { 9131 ctsio->residual = 0; 9132 ctsio->kern_data_len = alloc_len; 9133 ctsio->kern_total_len = alloc_len; 9134 } 9135 ctsio->kern_data_resid = 0; 9136 ctsio->kern_rel_offset = 0; 9137 ctsio->kern_sg_entries = 0; 9138 9139 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9140 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9141 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9142 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9143 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9144 CTL_WWPN_LEN); 9145 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9146 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9147 9148 /* 9149 * The control device is always connected. The disk device, on the 9150 * other hand, may not be online all the time. 9151 */ 9152 if (lun != NULL) 9153 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9154 lun->be_lun->lun_type; 9155 else 9156 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9157 9158 devid_ptr->page_code = SVPD_DEVICE_ID; 9159 9160 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9161 9162 mtx_lock(&ctl_softc->ctl_lock); 9163 9164 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9165 9166 /* 9167 * For Fibre channel, 9168 */ 9169 if (fe->port_type == CTL_PORT_FC) 9170 { 9171 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9172 SVPD_ID_CODESET_ASCII; 9173 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9174 SVPD_ID_CODESET_BINARY; 9175 } 9176 else 9177 { 9178 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9179 SVPD_ID_CODESET_ASCII; 9180 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9181 SVPD_ID_CODESET_BINARY; 9182 } 9183 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9184 mtx_unlock(&ctl_softc->ctl_lock); 9185 9186 /* 9187 * We're using a LUN association here. i.e., this device ID is a 9188 * per-LUN identifier. 9189 */ 9190 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9191 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9192 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9193 9194 /* 9195 * desc1 is for the WWPN which is a port asscociation. 9196 */ 9197 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9198 desc1->length = CTL_WWPN_LEN; 9199 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9200 /* For testing just create the WWPN */ 9201 #if 0 9202 ddb_GetWWNN((char *)desc1->identifier); 9203 9204 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9205 /* This is so Copancontrol will return something sane */ 9206 if (ctsio->io_hdr.nexus.targ_port!=0 && 9207 ctsio->io_hdr.nexus.targ_port!=8) 9208 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9209 else 9210 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9211 #endif 9212 9213 be64enc(desc1->identifier, fe->wwpn); 9214 9215 /* 9216 * desc2 is for the Relative Target Port(type 4h) identifier 9217 */ 9218 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9219 | SVPD_ID_TYPE_RELTARG; 9220 desc2->length = 4; 9221 //#if 0 9222 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9223 /* This is so Copancontrol will return something sane */ 9224 if (ctsio->io_hdr.nexus.targ_port!=0 && 9225 ctsio->io_hdr.nexus.targ_port!=8) 9226 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9227 else 9228 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9229 //#endif 9230 9231 /* 9232 * desc3 is for the Target Port Group(type 5h) identifier 9233 */ 9234 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9235 | SVPD_ID_TYPE_TPORTGRP; 9236 desc3->length = 4; 9237 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9238 desc3->identifier[3] = 1; 9239 else 9240 desc3->identifier[3] = 2; 9241 9242 #ifdef CTL_USE_BACKEND_SN 9243 /* 9244 * If we've actually got a backend, copy the device id from the 9245 * per-LUN data. Otherwise, set it to all spaces. 9246 */ 9247 if (lun != NULL) { 9248 /* 9249 * Copy the backend's LUN ID. 9250 */ 9251 strncpy((char *)t10id->vendor_spec_id, 9252 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9253 } else { 9254 /* 9255 * No backend, set this to spaces. 9256 */ 9257 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9258 } 9259 #else 9260 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9261 (lun != NULL) ? (int)lun->lun : 0); 9262 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9263 sizeof(tmpstr))); 9264 #endif 9265 9266 ctsio->scsi_status = SCSI_STATUS_OK; 9267 9268 ctsio->be_move_done = ctl_config_move_done; 9269 ctl_datamove((union ctl_io *)ctsio); 9270 9271 return (CTL_RETVAL_COMPLETE); 9272 } 9273 9274 static int 9275 ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9276 { 9277 struct scsi_inquiry *cdb; 9278 int alloc_len, retval; 9279 9280 cdb = (struct scsi_inquiry *)ctsio->cdb; 9281 9282 retval = CTL_RETVAL_COMPLETE; 9283 9284 alloc_len = scsi_2btoul(cdb->length); 9285 9286 switch (cdb->page_code) { 9287 case SVPD_SUPPORTED_PAGES: 9288 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9289 break; 9290 case SVPD_UNIT_SERIAL_NUMBER: 9291 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9292 break; 9293 case SVPD_DEVICE_ID: 9294 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9295 break; 9296 default: 9297 ctl_set_invalid_field(ctsio, 9298 /*sks_valid*/ 1, 9299 /*command*/ 1, 9300 /*field*/ 2, 9301 /*bit_valid*/ 0, 9302 /*bit*/ 0); 9303 ctl_done((union ctl_io *)ctsio); 9304 retval = CTL_RETVAL_COMPLETE; 9305 break; 9306 } 9307 9308 return (retval); 9309 } 9310 9311 static int 9312 ctl_inquiry_std(struct ctl_scsiio *ctsio) 9313 { 9314 struct scsi_inquiry_data *inq_ptr; 9315 struct scsi_inquiry *cdb; 9316 struct ctl_softc *ctl_softc; 9317 struct ctl_lun *lun; 9318 uint32_t alloc_len; 9319 int is_fc; 9320 9321 ctl_softc = control_softc; 9322 9323 /* 9324 * Figure out whether we're talking to a Fibre Channel port or not. 9325 * We treat the ioctl front end, and any SCSI adapters, as packetized 9326 * SCSI front ends. 9327 */ 9328 mtx_lock(&ctl_softc->ctl_lock); 9329 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9330 CTL_PORT_FC) 9331 is_fc = 0; 9332 else 9333 is_fc = 1; 9334 mtx_unlock(&ctl_softc->ctl_lock); 9335 9336 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9337 cdb = (struct scsi_inquiry *)ctsio->cdb; 9338 alloc_len = scsi_2btoul(cdb->length); 9339 9340 /* 9341 * We malloc the full inquiry data size here and fill it 9342 * in. If the user only asks for less, we'll give him 9343 * that much. 9344 */ 9345 /* XXX KDM what malloc flags should we use here?? */ 9346 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9347 if (ctsio->kern_data_ptr == NULL) { 9348 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9349 ctsio->scsi_status = SCSI_STATUS_BUSY; 9350 ctl_done((union ctl_io *)ctsio); 9351 return (CTL_RETVAL_COMPLETE); 9352 } 9353 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9354 ctsio->kern_sg_entries = 0; 9355 ctsio->kern_data_resid = 0; 9356 ctsio->kern_rel_offset = 0; 9357 9358 if (sizeof(*inq_ptr) < alloc_len) { 9359 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9360 ctsio->kern_data_len = sizeof(*inq_ptr); 9361 ctsio->kern_total_len = sizeof(*inq_ptr); 9362 } else { 9363 ctsio->residual = 0; 9364 ctsio->kern_data_len = alloc_len; 9365 ctsio->kern_total_len = alloc_len; 9366 } 9367 9368 /* 9369 * If we have a LUN configured, report it as connected. Otherwise, 9370 * report that it is offline or no device is supported, depending 9371 * on the value of inquiry_pq_no_lun. 9372 * 9373 * According to the spec (SPC-4 r34), the peripheral qualifier 9374 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9375 * 9376 * "A peripheral device having the specified peripheral device type 9377 * is not connected to this logical unit. However, the device 9378 * server is capable of supporting the specified peripheral device 9379 * type on this logical unit." 9380 * 9381 * According to the same spec, the peripheral qualifier 9382 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9383 * 9384 * "The device server is not capable of supporting a peripheral 9385 * device on this logical unit. For this peripheral qualifier the 9386 * peripheral device type shall be set to 1Fh. All other peripheral 9387 * device type values are reserved for this peripheral qualifier." 9388 * 9389 * Given the text, it would seem that we probably want to report that 9390 * the LUN is offline here. There is no LUN connected, but we can 9391 * support a LUN at the given LUN number. 9392 * 9393 * In the real world, though, it sounds like things are a little 9394 * different: 9395 * 9396 * - Linux, when presented with a LUN with the offline peripheral 9397 * qualifier, will create an sg driver instance for it. So when 9398 * you attach it to CTL, you wind up with a ton of sg driver 9399 * instances. (One for every LUN that Linux bothered to probe.) 9400 * Linux does this despite the fact that it issues a REPORT LUNs 9401 * to LUN 0 to get the inventory of supported LUNs. 9402 * 9403 * - There is other anecdotal evidence (from Emulex folks) about 9404 * arrays that use the offline peripheral qualifier for LUNs that 9405 * are on the "passive" path in an active/passive array. 9406 * 9407 * So the solution is provide a hopefully reasonable default 9408 * (return bad/no LUN) and allow the user to change the behavior 9409 * with a tunable/sysctl variable. 9410 */ 9411 if (lun != NULL) 9412 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9413 lun->be_lun->lun_type; 9414 else if (ctl_softc->inquiry_pq_no_lun == 0) 9415 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9416 else 9417 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9418 9419 /* RMB in byte 2 is 0 */ 9420 inq_ptr->version = SCSI_REV_SPC3; 9421 9422 /* 9423 * According to SAM-3, even if a device only supports a single 9424 * level of LUN addressing, it should still set the HISUP bit: 9425 * 9426 * 4.9.1 Logical unit numbers overview 9427 * 9428 * All logical unit number formats described in this standard are 9429 * hierarchical in structure even when only a single level in that 9430 * hierarchy is used. The HISUP bit shall be set to one in the 9431 * standard INQUIRY data (see SPC-2) when any logical unit number 9432 * format described in this standard is used. Non-hierarchical 9433 * formats are outside the scope of this standard. 9434 * 9435 * Therefore we set the HiSup bit here. 9436 * 9437 * The reponse format is 2, per SPC-3. 9438 */ 9439 inq_ptr->response_format = SID_HiSup | 2; 9440 9441 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9442 CTL_DEBUG_PRINT(("additional_length = %d\n", 9443 inq_ptr->additional_length)); 9444 9445 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9446 /* 16 bit addressing */ 9447 if (is_fc == 0) 9448 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9449 /* XXX set the SID_MultiP bit here if we're actually going to 9450 respond on multiple ports */ 9451 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9452 9453 /* 16 bit data bus, synchronous transfers */ 9454 /* XXX these flags don't apply for FC */ 9455 if (is_fc == 0) 9456 inq_ptr->flags = SID_WBus16 | SID_Sync; 9457 /* 9458 * XXX KDM do we want to support tagged queueing on the control 9459 * device at all? 9460 */ 9461 if ((lun == NULL) 9462 || (lun->be_lun->lun_type != T_PROCESSOR)) 9463 inq_ptr->flags |= SID_CmdQue; 9464 /* 9465 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9466 * We have 8 bytes for the vendor name, and 16 bytes for the device 9467 * name and 4 bytes for the revision. 9468 */ 9469 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9470 if (lun == NULL) { 9471 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9472 } else { 9473 switch (lun->be_lun->lun_type) { 9474 case T_DIRECT: 9475 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9476 break; 9477 case T_PROCESSOR: 9478 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9479 break; 9480 default: 9481 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9482 break; 9483 } 9484 } 9485 9486 /* 9487 * XXX make this a macro somewhere so it automatically gets 9488 * incremented when we make changes. 9489 */ 9490 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9491 9492 /* 9493 * For parallel SCSI, we support double transition and single 9494 * transition clocking. We also support QAS (Quick Arbitration 9495 * and Selection) and Information Unit transfers on both the 9496 * control and array devices. 9497 */ 9498 if (is_fc == 0) 9499 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9500 SID_SPI_IUS; 9501 9502 /* SAM-3 */ 9503 scsi_ulto2b(0x0060, inq_ptr->version1); 9504 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9505 scsi_ulto2b(0x0300, inq_ptr->version2); 9506 if (is_fc) { 9507 /* FCP-2 ANSI INCITS.350:2003 */ 9508 scsi_ulto2b(0x0917, inq_ptr->version3); 9509 } else { 9510 /* SPI-4 ANSI INCITS.362:200x */ 9511 scsi_ulto2b(0x0B56, inq_ptr->version3); 9512 } 9513 9514 if (lun == NULL) { 9515 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9516 scsi_ulto2b(0x0320, inq_ptr->version4); 9517 } else { 9518 switch (lun->be_lun->lun_type) { 9519 case T_DIRECT: 9520 /* 9521 * SBC-2 (no version claimed) XXX should we claim a 9522 * version? 9523 */ 9524 scsi_ulto2b(0x0320, inq_ptr->version4); 9525 break; 9526 case T_PROCESSOR: 9527 default: 9528 break; 9529 } 9530 } 9531 9532 ctsio->scsi_status = SCSI_STATUS_OK; 9533 if (ctsio->kern_data_len > 0) { 9534 ctsio->be_move_done = ctl_config_move_done; 9535 ctl_datamove((union ctl_io *)ctsio); 9536 } else { 9537 ctsio->io_hdr.status = CTL_SUCCESS; 9538 ctl_done((union ctl_io *)ctsio); 9539 } 9540 9541 return (CTL_RETVAL_COMPLETE); 9542 } 9543 9544 int 9545 ctl_inquiry(struct ctl_scsiio *ctsio) 9546 { 9547 struct scsi_inquiry *cdb; 9548 int retval; 9549 9550 cdb = (struct scsi_inquiry *)ctsio->cdb; 9551 9552 retval = 0; 9553 9554 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9555 9556 /* 9557 * Right now, we don't support the CmdDt inquiry information. 9558 * This would be nice to support in the future. When we do 9559 * support it, we should change this test so that it checks to make 9560 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9561 */ 9562 #ifdef notyet 9563 if (((cdb->byte2 & SI_EVPD) 9564 && (cdb->byte2 & SI_CMDDT))) 9565 #endif 9566 if (cdb->byte2 & SI_CMDDT) { 9567 /* 9568 * Point to the SI_CMDDT bit. We might change this 9569 * when we support SI_CMDDT, but since both bits would be 9570 * "wrong", this should probably just stay as-is then. 9571 */ 9572 ctl_set_invalid_field(ctsio, 9573 /*sks_valid*/ 1, 9574 /*command*/ 1, 9575 /*field*/ 1, 9576 /*bit_valid*/ 1, 9577 /*bit*/ 1); 9578 ctl_done((union ctl_io *)ctsio); 9579 return (CTL_RETVAL_COMPLETE); 9580 } 9581 if (cdb->byte2 & SI_EVPD) 9582 retval = ctl_inquiry_evpd(ctsio); 9583 #ifdef notyet 9584 else if (cdb->byte2 & SI_CMDDT) 9585 retval = ctl_inquiry_cmddt(ctsio); 9586 #endif 9587 else 9588 retval = ctl_inquiry_std(ctsio); 9589 9590 return (retval); 9591 } 9592 9593 /* 9594 * For known CDB types, parse the LBA and length. 9595 */ 9596 static int 9597 ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9598 { 9599 if (io->io_hdr.io_type != CTL_IO_SCSI) 9600 return (1); 9601 9602 switch (io->scsiio.cdb[0]) { 9603 case READ_6: 9604 case WRITE_6: { 9605 struct scsi_rw_6 *cdb; 9606 9607 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9608 9609 *lba = scsi_3btoul(cdb->addr); 9610 /* only 5 bits are valid in the most significant address byte */ 9611 *lba &= 0x1fffff; 9612 *len = cdb->length; 9613 break; 9614 } 9615 case READ_10: 9616 case WRITE_10: { 9617 struct scsi_rw_10 *cdb; 9618 9619 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9620 9621 *lba = scsi_4btoul(cdb->addr); 9622 *len = scsi_2btoul(cdb->length); 9623 break; 9624 } 9625 case WRITE_VERIFY_10: { 9626 struct scsi_write_verify_10 *cdb; 9627 9628 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9629 9630 *lba = scsi_4btoul(cdb->addr); 9631 *len = scsi_2btoul(cdb->length); 9632 break; 9633 } 9634 case READ_12: 9635 case WRITE_12: { 9636 struct scsi_rw_12 *cdb; 9637 9638 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9639 9640 *lba = scsi_4btoul(cdb->addr); 9641 *len = scsi_4btoul(cdb->length); 9642 break; 9643 } 9644 case WRITE_VERIFY_12: { 9645 struct scsi_write_verify_12 *cdb; 9646 9647 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9648 9649 *lba = scsi_4btoul(cdb->addr); 9650 *len = scsi_4btoul(cdb->length); 9651 break; 9652 } 9653 case READ_16: 9654 case WRITE_16: { 9655 struct scsi_rw_16 *cdb; 9656 9657 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9658 9659 *lba = scsi_8btou64(cdb->addr); 9660 *len = scsi_4btoul(cdb->length); 9661 break; 9662 } 9663 case WRITE_VERIFY_16: { 9664 struct scsi_write_verify_16 *cdb; 9665 9666 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9667 9668 9669 *lba = scsi_8btou64(cdb->addr); 9670 *len = scsi_4btoul(cdb->length); 9671 break; 9672 } 9673 default: 9674 return (1); 9675 break; /* NOTREACHED */ 9676 } 9677 9678 return (0); 9679 } 9680 9681 static ctl_action 9682 ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 9683 { 9684 uint64_t endlba1, endlba2; 9685 9686 endlba1 = lba1 + len1 - 1; 9687 endlba2 = lba2 + len2 - 1; 9688 9689 if ((endlba1 < lba2) 9690 || (endlba2 < lba1)) 9691 return (CTL_ACTION_PASS); 9692 else 9693 return (CTL_ACTION_BLOCK); 9694 } 9695 9696 static ctl_action 9697 ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 9698 { 9699 uint64_t lba1, lba2; 9700 uint32_t len1, len2; 9701 int retval; 9702 9703 retval = ctl_get_lba_len(io1, &lba1, &len1); 9704 if (retval != 0) 9705 return (CTL_ACTION_ERROR); 9706 9707 retval = ctl_get_lba_len(io2, &lba2, &len2); 9708 if (retval != 0) 9709 return (CTL_ACTION_ERROR); 9710 9711 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 9712 } 9713 9714 static ctl_action 9715 ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 9716 { 9717 struct ctl_cmd_entry *pending_entry, *ooa_entry; 9718 ctl_serialize_action *serialize_row; 9719 9720 /* 9721 * The initiator attempted multiple untagged commands at the same 9722 * time. Can't do that. 9723 */ 9724 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9725 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9726 && ((pending_io->io_hdr.nexus.targ_port == 9727 ooa_io->io_hdr.nexus.targ_port) 9728 && (pending_io->io_hdr.nexus.initid.id == 9729 ooa_io->io_hdr.nexus.initid.id)) 9730 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9731 return (CTL_ACTION_OVERLAP); 9732 9733 /* 9734 * The initiator attempted to send multiple tagged commands with 9735 * the same ID. (It's fine if different initiators have the same 9736 * tag ID.) 9737 * 9738 * Even if all of those conditions are true, we don't kill the I/O 9739 * if the command ahead of us has been aborted. We won't end up 9740 * sending it to the FETD, and it's perfectly legal to resend a 9741 * command with the same tag number as long as the previous 9742 * instance of this tag number has been aborted somehow. 9743 */ 9744 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9745 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9746 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 9747 && ((pending_io->io_hdr.nexus.targ_port == 9748 ooa_io->io_hdr.nexus.targ_port) 9749 && (pending_io->io_hdr.nexus.initid.id == 9750 ooa_io->io_hdr.nexus.initid.id)) 9751 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9752 return (CTL_ACTION_OVERLAP_TAG); 9753 9754 /* 9755 * If we get a head of queue tag, SAM-3 says that we should 9756 * immediately execute it. 9757 * 9758 * What happens if this command would normally block for some other 9759 * reason? e.g. a request sense with a head of queue tag 9760 * immediately after a write. Normally that would block, but this 9761 * will result in its getting executed immediately... 9762 * 9763 * We currently return "pass" instead of "skip", so we'll end up 9764 * going through the rest of the queue to check for overlapped tags. 9765 * 9766 * XXX KDM check for other types of blockage first?? 9767 */ 9768 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9769 return (CTL_ACTION_PASS); 9770 9771 /* 9772 * Ordered tags have to block until all items ahead of them 9773 * have completed. If we get called with an ordered tag, we always 9774 * block, if something else is ahead of us in the queue. 9775 */ 9776 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 9777 return (CTL_ACTION_BLOCK); 9778 9779 /* 9780 * Simple tags get blocked until all head of queue and ordered tags 9781 * ahead of them have completed. I'm lumping untagged commands in 9782 * with simple tags here. XXX KDM is that the right thing to do? 9783 */ 9784 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9785 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 9786 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9787 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 9788 return (CTL_ACTION_BLOCK); 9789 9790 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 9791 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 9792 9793 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 9794 9795 switch (serialize_row[pending_entry->seridx]) { 9796 case CTL_SER_BLOCK: 9797 return (CTL_ACTION_BLOCK); 9798 break; /* NOTREACHED */ 9799 case CTL_SER_EXTENT: 9800 return (ctl_extent_check(pending_io, ooa_io)); 9801 break; /* NOTREACHED */ 9802 case CTL_SER_PASS: 9803 return (CTL_ACTION_PASS); 9804 break; /* NOTREACHED */ 9805 case CTL_SER_SKIP: 9806 return (CTL_ACTION_SKIP); 9807 break; 9808 default: 9809 panic("invalid serialization value %d", 9810 serialize_row[pending_entry->seridx]); 9811 break; /* NOTREACHED */ 9812 } 9813 9814 return (CTL_ACTION_ERROR); 9815 } 9816 9817 /* 9818 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 9819 * Assumptions: 9820 * - caller holds ctl_lock 9821 * - pending_io is generally either incoming, or on the blocked queue 9822 * - starting I/O is the I/O we want to start the check with. 9823 */ 9824 static ctl_action 9825 ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 9826 union ctl_io *starting_io) 9827 { 9828 union ctl_io *ooa_io; 9829 ctl_action action; 9830 9831 /* 9832 * Run back along the OOA queue, starting with the current 9833 * blocked I/O and going through every I/O before it on the 9834 * queue. If starting_io is NULL, we'll just end up returning 9835 * CTL_ACTION_PASS. 9836 */ 9837 for (ooa_io = starting_io; ooa_io != NULL; 9838 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 9839 ooa_links)){ 9840 9841 /* 9842 * This routine just checks to see whether 9843 * cur_blocked is blocked by ooa_io, which is ahead 9844 * of it in the queue. It doesn't queue/dequeue 9845 * cur_blocked. 9846 */ 9847 action = ctl_check_for_blockage(pending_io, ooa_io); 9848 switch (action) { 9849 case CTL_ACTION_BLOCK: 9850 case CTL_ACTION_OVERLAP: 9851 case CTL_ACTION_OVERLAP_TAG: 9852 case CTL_ACTION_SKIP: 9853 case CTL_ACTION_ERROR: 9854 return (action); 9855 break; /* NOTREACHED */ 9856 case CTL_ACTION_PASS: 9857 break; 9858 default: 9859 panic("invalid action %d", action); 9860 break; /* NOTREACHED */ 9861 } 9862 } 9863 9864 return (CTL_ACTION_PASS); 9865 } 9866 9867 /* 9868 * Assumptions: 9869 * - An I/O has just completed, and has been removed from the per-LUN OOA 9870 * queue, so some items on the blocked queue may now be unblocked. 9871 * - The caller holds ctl_softc->ctl_lock 9872 */ 9873 static int 9874 ctl_check_blocked(struct ctl_lun *lun) 9875 { 9876 union ctl_io *cur_blocked, *next_blocked; 9877 9878 /* 9879 * Run forward from the head of the blocked queue, checking each 9880 * entry against the I/Os prior to it on the OOA queue to see if 9881 * there is still any blockage. 9882 * 9883 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 9884 * with our removing a variable on it while it is traversing the 9885 * list. 9886 */ 9887 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 9888 cur_blocked != NULL; cur_blocked = next_blocked) { 9889 union ctl_io *prev_ooa; 9890 ctl_action action; 9891 9892 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 9893 blocked_links); 9894 9895 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 9896 ctl_ooaq, ooa_links); 9897 9898 /* 9899 * If cur_blocked happens to be the first item in the OOA 9900 * queue now, prev_ooa will be NULL, and the action 9901 * returned will just be CTL_ACTION_PASS. 9902 */ 9903 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 9904 9905 switch (action) { 9906 case CTL_ACTION_BLOCK: 9907 /* Nothing to do here, still blocked */ 9908 break; 9909 case CTL_ACTION_OVERLAP: 9910 case CTL_ACTION_OVERLAP_TAG: 9911 /* 9912 * This shouldn't happen! In theory we've already 9913 * checked this command for overlap... 9914 */ 9915 break; 9916 case CTL_ACTION_PASS: 9917 case CTL_ACTION_SKIP: { 9918 struct ctl_softc *softc; 9919 struct ctl_cmd_entry *entry; 9920 uint32_t initidx; 9921 uint8_t opcode; 9922 int isc_retval; 9923 9924 /* 9925 * The skip case shouldn't happen, this transaction 9926 * should have never made it onto the blocked queue. 9927 */ 9928 /* 9929 * This I/O is no longer blocked, we can remove it 9930 * from the blocked queue. Since this is a TAILQ 9931 * (doubly linked list), we can do O(1) removals 9932 * from any place on the list. 9933 */ 9934 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 9935 blocked_links); 9936 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 9937 9938 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 9939 /* 9940 * Need to send IO back to original side to 9941 * run 9942 */ 9943 union ctl_ha_msg msg_info; 9944 9945 msg_info.hdr.original_sc = 9946 cur_blocked->io_hdr.original_sc; 9947 msg_info.hdr.serializing_sc = cur_blocked; 9948 msg_info.hdr.msg_type = CTL_MSG_R2R; 9949 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 9950 &msg_info, sizeof(msg_info), 0)) > 9951 CTL_HA_STATUS_SUCCESS) { 9952 printf("CTL:Check Blocked error from " 9953 "ctl_ha_msg_send %d\n", 9954 isc_retval); 9955 } 9956 break; 9957 } 9958 opcode = cur_blocked->scsiio.cdb[0]; 9959 entry = &ctl_cmd_table[opcode]; 9960 softc = control_softc; 9961 9962 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 9963 9964 /* 9965 * Check this I/O for LUN state changes that may 9966 * have happened while this command was blocked. 9967 * The LUN state may have been changed by a command 9968 * ahead of us in the queue, so we need to re-check 9969 * for any states that can be caused by SCSI 9970 * commands. 9971 */ 9972 if (ctl_scsiio_lun_check(softc, lun, entry, 9973 &cur_blocked->scsiio) == 0) { 9974 cur_blocked->io_hdr.flags |= 9975 CTL_FLAG_IS_WAS_ON_RTR; 9976 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 9977 &cur_blocked->io_hdr, links); 9978 /* 9979 * In the non CTL_DONE_THREAD case, we need 9980 * to wake up the work thread here. When 9981 * we're processing completed requests from 9982 * the work thread context, we'll pop back 9983 * around and end up pulling things off the 9984 * RtR queue. When we aren't processing 9985 * things from the work thread context, 9986 * though, we won't ever check the RtR queue. 9987 * So we need to wake up the thread to clear 9988 * things off the queue. Otherwise this 9989 * transaction will just sit on the RtR queue 9990 * until a new I/O comes in. (Which may or 9991 * may not happen...) 9992 */ 9993 #ifndef CTL_DONE_THREAD 9994 ctl_wakeup_thread(); 9995 #endif 9996 } else 9997 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 9998 break; 9999 } 10000 default: 10001 /* 10002 * This probably shouldn't happen -- we shouldn't 10003 * get CTL_ACTION_ERROR, or anything else. 10004 */ 10005 break; 10006 } 10007 } 10008 10009 return (CTL_RETVAL_COMPLETE); 10010 } 10011 10012 /* 10013 * This routine (with one exception) checks LUN flags that can be set by 10014 * commands ahead of us in the OOA queue. These flags have to be checked 10015 * when a command initially comes in, and when we pull a command off the 10016 * blocked queue and are preparing to execute it. The reason we have to 10017 * check these flags for commands on the blocked queue is that the LUN 10018 * state may have been changed by a command ahead of us while we're on the 10019 * blocked queue. 10020 * 10021 * Ordering is somewhat important with these checks, so please pay 10022 * careful attention to the placement of any new checks. 10023 */ 10024 static int 10025 ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10026 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10027 { 10028 int retval; 10029 10030 retval = 0; 10031 10032 /* 10033 * If this shelf is a secondary shelf controller, we have to reject 10034 * any media access commands. 10035 */ 10036 #if 0 10037 /* No longer needed for HA */ 10038 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10039 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10040 ctl_set_lun_standby(ctsio); 10041 retval = 1; 10042 goto bailout; 10043 } 10044 #endif 10045 10046 /* 10047 * Check for a reservation conflict. If this command isn't allowed 10048 * even on reserved LUNs, and if this initiator isn't the one who 10049 * reserved us, reject the command with a reservation conflict. 10050 */ 10051 if ((lun->flags & CTL_LUN_RESERVED) 10052 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10053 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10054 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10055 || (ctsio->io_hdr.nexus.targ_target.id != 10056 lun->rsv_nexus.targ_target.id)) { 10057 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10058 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10059 retval = 1; 10060 goto bailout; 10061 } 10062 } 10063 10064 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10065 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10066 uint32_t residx; 10067 10068 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10069 /* 10070 * if we aren't registered or it's a res holder type 10071 * reservation and this isn't the res holder then set a 10072 * conflict. 10073 * NOTE: Commands which might be allowed on write exclusive 10074 * type reservations are checked in the particular command 10075 * for a conflict. Read and SSU are the only ones. 10076 */ 10077 if (!lun->per_res[residx].registered 10078 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10079 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10080 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10081 retval = 1; 10082 goto bailout; 10083 } 10084 10085 } 10086 10087 if ((lun->flags & CTL_LUN_OFFLINE) 10088 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10089 ctl_set_lun_not_ready(ctsio); 10090 retval = 1; 10091 goto bailout; 10092 } 10093 10094 /* 10095 * If the LUN is stopped, see if this particular command is allowed 10096 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10097 */ 10098 if ((lun->flags & CTL_LUN_STOPPED) 10099 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10100 /* "Logical unit not ready, initializing cmd. required" */ 10101 ctl_set_lun_stopped(ctsio); 10102 retval = 1; 10103 goto bailout; 10104 } 10105 10106 if ((lun->flags & CTL_LUN_INOPERABLE) 10107 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10108 /* "Medium format corrupted" */ 10109 ctl_set_medium_format_corrupted(ctsio); 10110 retval = 1; 10111 goto bailout; 10112 } 10113 10114 bailout: 10115 return (retval); 10116 10117 } 10118 10119 static void 10120 ctl_failover_io(union ctl_io *io, int have_lock) 10121 { 10122 ctl_set_busy(&io->scsiio); 10123 ctl_done_lock(io, have_lock); 10124 } 10125 10126 static void 10127 ctl_failover(void) 10128 { 10129 struct ctl_lun *lun; 10130 struct ctl_softc *ctl_softc; 10131 union ctl_io *next_io, *pending_io; 10132 union ctl_io *io; 10133 int lun_idx; 10134 int i; 10135 10136 ctl_softc = control_softc; 10137 10138 mtx_lock(&ctl_softc->ctl_lock); 10139 /* 10140 * Remove any cmds from the other SC from the rtr queue. These 10141 * will obviously only be for LUNs for which we're the primary. 10142 * We can't send status or get/send data for these commands. 10143 * Since they haven't been executed yet, we can just remove them. 10144 * We'll either abort them or delete them below, depending on 10145 * which HA mode we're in. 10146 */ 10147 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10148 io != NULL; io = next_io) { 10149 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10150 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10151 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10152 ctl_io_hdr, links); 10153 } 10154 10155 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10156 lun = ctl_softc->ctl_luns[lun_idx]; 10157 if (lun==NULL) 10158 continue; 10159 10160 /* 10161 * Processor LUNs are primary on both sides. 10162 * XXX will this always be true? 10163 */ 10164 if (lun->be_lun->lun_type == T_PROCESSOR) 10165 continue; 10166 10167 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10168 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10169 printf("FAILOVER: primary lun %d\n", lun_idx); 10170 /* 10171 * Remove all commands from the other SC. First from the 10172 * blocked queue then from the ooa queue. Once we have 10173 * removed them. Call ctl_check_blocked to see if there 10174 * is anything that can run. 10175 */ 10176 for (io = (union ctl_io *)TAILQ_FIRST( 10177 &lun->blocked_queue); io != NULL; io = next_io) { 10178 10179 next_io = (union ctl_io *)TAILQ_NEXT( 10180 &io->io_hdr, blocked_links); 10181 10182 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10183 TAILQ_REMOVE(&lun->blocked_queue, 10184 &io->io_hdr,blocked_links); 10185 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10186 TAILQ_REMOVE(&lun->ooa_queue, 10187 &io->io_hdr, ooa_links); 10188 10189 ctl_free_io_internal(io, 1); 10190 } 10191 } 10192 10193 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10194 io != NULL; io = next_io) { 10195 10196 next_io = (union ctl_io *)TAILQ_NEXT( 10197 &io->io_hdr, ooa_links); 10198 10199 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10200 10201 TAILQ_REMOVE(&lun->ooa_queue, 10202 &io->io_hdr, 10203 ooa_links); 10204 10205 ctl_free_io_internal(io, 1); 10206 } 10207 } 10208 ctl_check_blocked(lun); 10209 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10210 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10211 10212 printf("FAILOVER: primary lun %d\n", lun_idx); 10213 /* 10214 * Abort all commands from the other SC. We can't 10215 * send status back for them now. These should get 10216 * cleaned up when they are completed or come out 10217 * for a datamove operation. 10218 */ 10219 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10220 io != NULL; io = next_io) { 10221 next_io = (union ctl_io *)TAILQ_NEXT( 10222 &io->io_hdr, ooa_links); 10223 10224 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10225 io->io_hdr.flags |= CTL_FLAG_ABORT; 10226 } 10227 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10228 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10229 10230 printf("FAILOVER: secondary lun %d\n", lun_idx); 10231 10232 lun->flags |= CTL_LUN_PRIMARY_SC; 10233 10234 /* 10235 * We send all I/O that was sent to this controller 10236 * and redirected to the other side back with 10237 * busy status, and have the initiator retry it. 10238 * Figuring out how much data has been transferred, 10239 * etc. and picking up where we left off would be 10240 * very tricky. 10241 * 10242 * XXX KDM need to remove I/O from the blocked 10243 * queue as well! 10244 */ 10245 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10246 &lun->ooa_queue); pending_io != NULL; 10247 pending_io = next_io) { 10248 10249 next_io = (union ctl_io *)TAILQ_NEXT( 10250 &pending_io->io_hdr, ooa_links); 10251 10252 pending_io->io_hdr.flags &= 10253 ~CTL_FLAG_SENT_2OTHER_SC; 10254 10255 if (pending_io->io_hdr.flags & 10256 CTL_FLAG_IO_ACTIVE) { 10257 pending_io->io_hdr.flags |= 10258 CTL_FLAG_FAILOVER; 10259 } else { 10260 ctl_set_busy(&pending_io->scsiio); 10261 ctl_done_lock(pending_io, 10262 /*have_lock*/1); 10263 } 10264 } 10265 10266 /* 10267 * Build Unit Attention 10268 */ 10269 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10270 lun->pending_sense[i].ua_pending |= 10271 CTL_UA_ASYM_ACC_CHANGE; 10272 } 10273 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10274 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10275 printf("FAILOVER: secondary lun %d\n", lun_idx); 10276 /* 10277 * if the first io on the OOA is not on the RtR queue 10278 * add it. 10279 */ 10280 lun->flags |= CTL_LUN_PRIMARY_SC; 10281 10282 pending_io = (union ctl_io *)TAILQ_FIRST( 10283 &lun->ooa_queue); 10284 if (pending_io==NULL) { 10285 printf("Nothing on OOA queue\n"); 10286 continue; 10287 } 10288 10289 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10290 if ((pending_io->io_hdr.flags & 10291 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10292 pending_io->io_hdr.flags |= 10293 CTL_FLAG_IS_WAS_ON_RTR; 10294 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10295 &pending_io->io_hdr, links); 10296 } 10297 #if 0 10298 else 10299 { 10300 printf("Tag 0x%04x is running\n", 10301 pending_io->scsiio.tag_num); 10302 } 10303 #endif 10304 10305 next_io = (union ctl_io *)TAILQ_NEXT( 10306 &pending_io->io_hdr, ooa_links); 10307 for (pending_io=next_io; pending_io != NULL; 10308 pending_io = next_io) { 10309 pending_io->io_hdr.flags &= 10310 ~CTL_FLAG_SENT_2OTHER_SC; 10311 next_io = (union ctl_io *)TAILQ_NEXT( 10312 &pending_io->io_hdr, ooa_links); 10313 if (pending_io->io_hdr.flags & 10314 CTL_FLAG_IS_WAS_ON_RTR) { 10315 #if 0 10316 printf("Tag 0x%04x is running\n", 10317 pending_io->scsiio.tag_num); 10318 #endif 10319 continue; 10320 } 10321 10322 switch (ctl_check_ooa(lun, pending_io, 10323 (union ctl_io *)TAILQ_PREV( 10324 &pending_io->io_hdr, ctl_ooaq, 10325 ooa_links))) { 10326 10327 case CTL_ACTION_BLOCK: 10328 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10329 &pending_io->io_hdr, 10330 blocked_links); 10331 pending_io->io_hdr.flags |= 10332 CTL_FLAG_BLOCKED; 10333 break; 10334 case CTL_ACTION_PASS: 10335 case CTL_ACTION_SKIP: 10336 pending_io->io_hdr.flags |= 10337 CTL_FLAG_IS_WAS_ON_RTR; 10338 STAILQ_INSERT_TAIL( 10339 &ctl_softc->rtr_queue, 10340 &pending_io->io_hdr, links); 10341 break; 10342 case CTL_ACTION_OVERLAP: 10343 ctl_set_overlapped_cmd( 10344 (struct ctl_scsiio *)pending_io); 10345 ctl_done_lock(pending_io, 10346 /*have_lock*/ 1); 10347 break; 10348 case CTL_ACTION_OVERLAP_TAG: 10349 ctl_set_overlapped_tag( 10350 (struct ctl_scsiio *)pending_io, 10351 pending_io->scsiio.tag_num & 0xff); 10352 ctl_done_lock(pending_io, 10353 /*have_lock*/ 1); 10354 break; 10355 case CTL_ACTION_ERROR: 10356 default: 10357 ctl_set_internal_failure( 10358 (struct ctl_scsiio *)pending_io, 10359 0, // sks_valid 10360 0); //retry count 10361 ctl_done_lock(pending_io, 10362 /*have_lock*/ 1); 10363 break; 10364 } 10365 } 10366 10367 /* 10368 * Build Unit Attention 10369 */ 10370 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10371 lun->pending_sense[i].ua_pending |= 10372 CTL_UA_ASYM_ACC_CHANGE; 10373 } 10374 } else { 10375 panic("Unhandled HA mode failover, LUN flags = %#x, " 10376 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10377 } 10378 } 10379 ctl_pause_rtr = 0; 10380 mtx_unlock(&ctl_softc->ctl_lock); 10381 } 10382 10383 static int 10384 ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10385 { 10386 struct ctl_lun *lun; 10387 struct ctl_cmd_entry *entry; 10388 uint8_t opcode; 10389 uint32_t initidx; 10390 int retval; 10391 10392 retval = 0; 10393 10394 lun = NULL; 10395 10396 opcode = ctsio->cdb[0]; 10397 10398 mtx_lock(&ctl_softc->ctl_lock); 10399 10400 if ((ctsio->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10401 && (ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun] != NULL)) { 10402 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 10403 /* 10404 * If the LUN is invalid, pretend that it doesn't exist. 10405 * It will go away as soon as all pending I/O has been 10406 * completed. 10407 */ 10408 if (lun->flags & CTL_LUN_DISABLED) { 10409 lun = NULL; 10410 } else { 10411 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10412 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10413 lun->be_lun; 10414 if (lun->be_lun->lun_type == T_PROCESSOR) { 10415 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10416 } 10417 } 10418 } else { 10419 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10420 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10421 } 10422 10423 entry = &ctl_cmd_table[opcode]; 10424 10425 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10426 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10427 10428 /* 10429 * Check to see whether we can send this command to LUNs that don't 10430 * exist. This should pretty much only be the case for inquiry 10431 * and request sense. Further checks, below, really require having 10432 * a LUN, so we can't really check the command anymore. Just put 10433 * it on the rtr queue. 10434 */ 10435 if (lun == NULL) { 10436 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10437 goto queue_rtr; 10438 10439 ctl_set_unsupported_lun(ctsio); 10440 mtx_unlock(&ctl_softc->ctl_lock); 10441 ctl_done((union ctl_io *)ctsio); 10442 goto bailout; 10443 } else { 10444 /* 10445 * Every I/O goes into the OOA queue for a particular LUN, and 10446 * stays there until completion. 10447 */ 10448 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10449 10450 /* 10451 * Make sure we support this particular command on this LUN. 10452 * e.g., we don't support writes to the control LUN. 10453 */ 10454 switch (lun->be_lun->lun_type) { 10455 case T_PROCESSOR: 10456 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10457 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10458 == 0)) { 10459 ctl_set_invalid_opcode(ctsio); 10460 mtx_unlock(&ctl_softc->ctl_lock); 10461 ctl_done((union ctl_io *)ctsio); 10462 goto bailout; 10463 } 10464 break; 10465 case T_DIRECT: 10466 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10467 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10468 == 0)){ 10469 ctl_set_invalid_opcode(ctsio); 10470 mtx_unlock(&ctl_softc->ctl_lock); 10471 ctl_done((union ctl_io *)ctsio); 10472 goto bailout; 10473 } 10474 break; 10475 default: 10476 printf("Unsupported CTL LUN type %d\n", 10477 lun->be_lun->lun_type); 10478 panic("Unsupported CTL LUN type %d\n", 10479 lun->be_lun->lun_type); 10480 break; /* NOTREACHED */ 10481 } 10482 } 10483 10484 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10485 10486 /* 10487 * If we've got a request sense, it'll clear the contingent 10488 * allegiance condition. Otherwise, if we have a CA condition for 10489 * this initiator, clear it, because it sent down a command other 10490 * than request sense. 10491 */ 10492 if ((opcode != REQUEST_SENSE) 10493 && (ctl_is_set(lun->have_ca, initidx))) 10494 ctl_clear_mask(lun->have_ca, initidx); 10495 10496 /* 10497 * If the command has this flag set, it handles its own unit 10498 * attention reporting, we shouldn't do anything. Otherwise we 10499 * check for any pending unit attentions, and send them back to the 10500 * initiator. We only do this when a command initially comes in, 10501 * not when we pull it off the blocked queue. 10502 * 10503 * According to SAM-3, section 5.3.2, the order that things get 10504 * presented back to the host is basically unit attentions caused 10505 * by some sort of reset event, busy status, reservation conflicts 10506 * or task set full, and finally any other status. 10507 * 10508 * One issue here is that some of the unit attentions we report 10509 * don't fall into the "reset" category (e.g. "reported luns data 10510 * has changed"). So reporting it here, before the reservation 10511 * check, may be technically wrong. I guess the only thing to do 10512 * would be to check for and report the reset events here, and then 10513 * check for the other unit attention types after we check for a 10514 * reservation conflict. 10515 * 10516 * XXX KDM need to fix this 10517 */ 10518 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10519 ctl_ua_type ua_type; 10520 10521 ua_type = lun->pending_sense[initidx].ua_pending; 10522 if (ua_type != CTL_UA_NONE) { 10523 scsi_sense_data_type sense_format; 10524 10525 if (lun != NULL) 10526 sense_format = (lun->flags & 10527 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 10528 SSD_TYPE_FIXED; 10529 else 10530 sense_format = SSD_TYPE_FIXED; 10531 10532 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10533 sense_format); 10534 if (ua_type != CTL_UA_NONE) { 10535 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10536 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10537 CTL_AUTOSENSE; 10538 ctsio->sense_len = SSD_FULL_SIZE; 10539 lun->pending_sense[initidx].ua_pending &= 10540 ~ua_type; 10541 mtx_unlock(&ctl_softc->ctl_lock); 10542 ctl_done((union ctl_io *)ctsio); 10543 goto bailout; 10544 } 10545 } 10546 } 10547 10548 10549 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10550 mtx_unlock(&ctl_softc->ctl_lock); 10551 ctl_done((union ctl_io *)ctsio); 10552 goto bailout; 10553 } 10554 10555 /* 10556 * XXX CHD this is where we want to send IO to other side if 10557 * this LUN is secondary on this SC. We will need to make a copy 10558 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10559 * the copy we send as FROM_OTHER. 10560 * We also need to stuff the address of the original IO so we can 10561 * find it easily. Something similar will need be done on the other 10562 * side so when we are done we can find the copy. 10563 */ 10564 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10565 union ctl_ha_msg msg_info; 10566 int isc_retval; 10567 10568 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10569 10570 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10571 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10572 #if 0 10573 printf("1. ctsio %p\n", ctsio); 10574 #endif 10575 msg_info.hdr.serializing_sc = NULL; 10576 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10577 msg_info.scsi.tag_num = ctsio->tag_num; 10578 msg_info.scsi.tag_type = ctsio->tag_type; 10579 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10580 10581 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10582 10583 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10584 (void *)&msg_info, sizeof(msg_info), 0)) > 10585 CTL_HA_STATUS_SUCCESS) { 10586 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10587 isc_retval); 10588 printf("CTL:opcode is %x\n",opcode); 10589 } else { 10590 #if 0 10591 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10592 #endif 10593 } 10594 10595 /* 10596 * XXX KDM this I/O is off the incoming queue, but hasn't 10597 * been inserted on any other queue. We may need to come 10598 * up with a holding queue while we wait for serialization 10599 * so that we have an idea of what we're waiting for from 10600 * the other side. 10601 */ 10602 goto bailout_unlock; 10603 } 10604 10605 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10606 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10607 ctl_ooaq, ooa_links))) { 10608 case CTL_ACTION_BLOCK: 10609 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10610 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10611 blocked_links); 10612 goto bailout_unlock; 10613 break; /* NOTREACHED */ 10614 case CTL_ACTION_PASS: 10615 case CTL_ACTION_SKIP: 10616 goto queue_rtr; 10617 break; /* NOTREACHED */ 10618 case CTL_ACTION_OVERLAP: 10619 ctl_set_overlapped_cmd(ctsio); 10620 mtx_unlock(&ctl_softc->ctl_lock); 10621 ctl_done((union ctl_io *)ctsio); 10622 goto bailout; 10623 break; /* NOTREACHED */ 10624 case CTL_ACTION_OVERLAP_TAG: 10625 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10626 mtx_unlock(&ctl_softc->ctl_lock); 10627 ctl_done((union ctl_io *)ctsio); 10628 goto bailout; 10629 break; /* NOTREACHED */ 10630 case CTL_ACTION_ERROR: 10631 default: 10632 ctl_set_internal_failure(ctsio, 10633 /*sks_valid*/ 0, 10634 /*retry_count*/ 0); 10635 mtx_unlock(&ctl_softc->ctl_lock); 10636 ctl_done((union ctl_io *)ctsio); 10637 goto bailout; 10638 break; /* NOTREACHED */ 10639 } 10640 10641 goto bailout_unlock; 10642 10643 queue_rtr: 10644 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10645 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10646 10647 bailout_unlock: 10648 mtx_unlock(&ctl_softc->ctl_lock); 10649 10650 bailout: 10651 return (retval); 10652 } 10653 10654 static int 10655 ctl_scsiio(struct ctl_scsiio *ctsio) 10656 { 10657 int retval; 10658 struct ctl_cmd_entry *entry; 10659 10660 retval = CTL_RETVAL_COMPLETE; 10661 10662 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10663 10664 entry = &ctl_cmd_table[ctsio->cdb[0]]; 10665 10666 /* 10667 * If this I/O has been aborted, just send it straight to 10668 * ctl_done() without executing it. 10669 */ 10670 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 10671 ctl_done((union ctl_io *)ctsio); 10672 goto bailout; 10673 } 10674 10675 /* 10676 * All the checks should have been handled by ctl_scsiio_precheck(). 10677 * We should be clear now to just execute the I/O. 10678 */ 10679 retval = entry->execute(ctsio); 10680 10681 bailout: 10682 return (retval); 10683 } 10684 10685 /* 10686 * Since we only implement one target right now, a bus reset simply resets 10687 * our single target. 10688 */ 10689 static int 10690 ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 10691 { 10692 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 10693 } 10694 10695 static int 10696 ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 10697 ctl_ua_type ua_type) 10698 { 10699 struct ctl_lun *lun; 10700 int retval; 10701 10702 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 10703 union ctl_ha_msg msg_info; 10704 10705 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10706 msg_info.hdr.nexus = io->io_hdr.nexus; 10707 if (ua_type==CTL_UA_TARG_RESET) 10708 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 10709 else 10710 msg_info.task.task_action = CTL_TASK_BUS_RESET; 10711 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 10712 msg_info.hdr.original_sc = NULL; 10713 msg_info.hdr.serializing_sc = NULL; 10714 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10715 (void *)&msg_info, sizeof(msg_info), 0)) { 10716 } 10717 } 10718 retval = 0; 10719 10720 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 10721 retval += ctl_lun_reset(lun, io, ua_type); 10722 10723 return (retval); 10724 } 10725 10726 /* 10727 * The LUN should always be set. The I/O is optional, and is used to 10728 * distinguish between I/Os sent by this initiator, and by other 10729 * initiators. We set unit attention for initiators other than this one. 10730 * SAM-3 is vague on this point. It does say that a unit attention should 10731 * be established for other initiators when a LUN is reset (see section 10732 * 5.7.3), but it doesn't specifically say that the unit attention should 10733 * be established for this particular initiator when a LUN is reset. Here 10734 * is the relevant text, from SAM-3 rev 8: 10735 * 10736 * 5.7.2 When a SCSI initiator port aborts its own tasks 10737 * 10738 * When a SCSI initiator port causes its own task(s) to be aborted, no 10739 * notification that the task(s) have been aborted shall be returned to 10740 * the SCSI initiator port other than the completion response for the 10741 * command or task management function action that caused the task(s) to 10742 * be aborted and notification(s) associated with related effects of the 10743 * action (e.g., a reset unit attention condition). 10744 * 10745 * XXX KDM for now, we're setting unit attention for all initiators. 10746 */ 10747 static int 10748 ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 10749 { 10750 union ctl_io *xio; 10751 #if 0 10752 uint32_t initindex; 10753 #endif 10754 int i; 10755 10756 /* 10757 * Run through the OOA queue and abort each I/O. 10758 */ 10759 #if 0 10760 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10761 #endif 10762 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10763 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10764 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10765 } 10766 10767 /* 10768 * This version sets unit attention for every 10769 */ 10770 #if 0 10771 initindex = ctl_get_initindex(&io->io_hdr.nexus); 10772 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10773 if (initindex == i) 10774 continue; 10775 lun->pending_sense[i].ua_pending |= ua_type; 10776 } 10777 #endif 10778 10779 /* 10780 * A reset (any kind, really) clears reservations established with 10781 * RESERVE/RELEASE. It does not clear reservations established 10782 * with PERSISTENT RESERVE OUT, but we don't support that at the 10783 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 10784 * reservations made with the RESERVE/RELEASE commands, because 10785 * those commands are obsolete in SPC-3. 10786 */ 10787 lun->flags &= ~CTL_LUN_RESERVED; 10788 10789 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10790 ctl_clear_mask(lun->have_ca, i); 10791 lun->pending_sense[i].ua_pending |= ua_type; 10792 } 10793 10794 return (0); 10795 } 10796 10797 static int 10798 ctl_abort_task(union ctl_io *io) 10799 { 10800 union ctl_io *xio; 10801 struct ctl_lun *lun; 10802 struct ctl_softc *ctl_softc; 10803 #if 0 10804 struct sbuf sb; 10805 char printbuf[128]; 10806 #endif 10807 int found; 10808 10809 ctl_softc = control_softc; 10810 found = 0; 10811 10812 /* 10813 * Look up the LUN. 10814 */ 10815 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10816 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 10817 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 10818 else 10819 goto bailout; 10820 10821 #if 0 10822 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 10823 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 10824 #endif 10825 10826 /* 10827 * Run through the OOA queue and attempt to find the given I/O. 10828 * The target port, initiator ID, tag type and tag number have to 10829 * match the values that we got from the initiator. If we have an 10830 * untagged command to abort, simply abort the first untagged command 10831 * we come to. We only allow one untagged command at a time of course. 10832 */ 10833 #if 0 10834 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10835 #endif 10836 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10837 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10838 #if 0 10839 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 10840 10841 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 10842 lun->lun, xio->scsiio.tag_num, 10843 xio->scsiio.tag_type, 10844 (xio->io_hdr.blocked_links.tqe_prev 10845 == NULL) ? "" : " BLOCKED", 10846 (xio->io_hdr.flags & 10847 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 10848 (xio->io_hdr.flags & 10849 CTL_FLAG_ABORT) ? " ABORT" : "", 10850 (xio->io_hdr.flags & 10851 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 10852 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 10853 sbuf_finish(&sb); 10854 printf("%s\n", sbuf_data(&sb)); 10855 #endif 10856 10857 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 10858 && (xio->io_hdr.nexus.initid.id == 10859 io->io_hdr.nexus.initid.id)) { 10860 /* 10861 * If the abort says that the task is untagged, the 10862 * task in the queue must be untagged. Otherwise, 10863 * we just check to see whether the tag numbers 10864 * match. This is because the QLogic firmware 10865 * doesn't pass back the tag type in an abort 10866 * request. 10867 */ 10868 #if 0 10869 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 10870 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 10871 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 10872 #endif 10873 /* 10874 * XXX KDM we've got problems with FC, because it 10875 * doesn't send down a tag type with aborts. So we 10876 * can only really go by the tag number... 10877 * This may cause problems with parallel SCSI. 10878 * Need to figure that out!! 10879 */ 10880 if (xio->scsiio.tag_num == io->taskio.tag_num) { 10881 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10882 found = 1; 10883 if ((io->io_hdr.flags & 10884 CTL_FLAG_FROM_OTHER_SC) == 0 && 10885 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 10886 union ctl_ha_msg msg_info; 10887 10888 io->io_hdr.flags |= 10889 CTL_FLAG_SENT_2OTHER_SC; 10890 msg_info.hdr.nexus = io->io_hdr.nexus; 10891 msg_info.task.task_action = 10892 CTL_TASK_ABORT_TASK; 10893 msg_info.task.tag_num = 10894 io->taskio.tag_num; 10895 msg_info.task.tag_type = 10896 io->taskio.tag_type; 10897 msg_info.hdr.msg_type = 10898 CTL_MSG_MANAGE_TASKS; 10899 msg_info.hdr.original_sc = NULL; 10900 msg_info.hdr.serializing_sc = NULL; 10901 #if 0 10902 printf("Sent Abort to other side\n"); 10903 #endif 10904 if (CTL_HA_STATUS_SUCCESS != 10905 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10906 (void *)&msg_info, 10907 sizeof(msg_info), 0)) { 10908 } 10909 } 10910 #if 0 10911 printf("ctl_abort_task: found I/O to abort\n"); 10912 #endif 10913 break; 10914 } 10915 } 10916 } 10917 10918 bailout: 10919 10920 if (found == 0) { 10921 /* 10922 * This isn't really an error. It's entirely possible for 10923 * the abort and command completion to cross on the wire. 10924 * This is more of an informative/diagnostic error. 10925 */ 10926 #if 0 10927 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 10928 "%d:%d:%d:%d tag %d type %d\n", 10929 io->io_hdr.nexus.initid.id, 10930 io->io_hdr.nexus.targ_port, 10931 io->io_hdr.nexus.targ_target.id, 10932 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 10933 io->taskio.tag_type); 10934 #endif 10935 return (1); 10936 } else 10937 return (0); 10938 } 10939 10940 /* 10941 * Assumptions: caller holds ctl_softc->ctl_lock 10942 * 10943 * This routine cannot block! It must be callable from an interrupt 10944 * handler as well as from the work thread. 10945 */ 10946 static void 10947 ctl_run_task_queue(struct ctl_softc *ctl_softc) 10948 { 10949 union ctl_io *io, *next_io; 10950 10951 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 10952 10953 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 10954 io != NULL; io = next_io) { 10955 int retval; 10956 const char *task_desc; 10957 10958 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10959 10960 retval = 0; 10961 10962 switch (io->io_hdr.io_type) { 10963 case CTL_IO_TASK: { 10964 task_desc = ctl_scsi_task_string(&io->taskio); 10965 if (task_desc != NULL) { 10966 #ifdef NEEDTOPORT 10967 csevent_log(CSC_CTL | CSC_SHELF_SW | 10968 CTL_TASK_REPORT, 10969 csevent_LogType_Trace, 10970 csevent_Severity_Information, 10971 csevent_AlertLevel_Green, 10972 csevent_FRU_Firmware, 10973 csevent_FRU_Unknown, 10974 "CTL: received task: %s",task_desc); 10975 #endif 10976 } else { 10977 #ifdef NEEDTOPORT 10978 csevent_log(CSC_CTL | CSC_SHELF_SW | 10979 CTL_TASK_REPORT, 10980 csevent_LogType_Trace, 10981 csevent_Severity_Information, 10982 csevent_AlertLevel_Green, 10983 csevent_FRU_Firmware, 10984 csevent_FRU_Unknown, 10985 "CTL: received unknown task " 10986 "type: %d (%#x)", 10987 io->taskio.task_action, 10988 io->taskio.task_action); 10989 #endif 10990 } 10991 switch (io->taskio.task_action) { 10992 case CTL_TASK_ABORT_TASK: 10993 retval = ctl_abort_task(io); 10994 break; 10995 case CTL_TASK_ABORT_TASK_SET: 10996 break; 10997 case CTL_TASK_CLEAR_ACA: 10998 break; 10999 case CTL_TASK_CLEAR_TASK_SET: 11000 break; 11001 case CTL_TASK_LUN_RESET: { 11002 struct ctl_lun *lun; 11003 uint32_t targ_lun; 11004 int retval; 11005 11006 targ_lun = io->io_hdr.nexus.targ_lun; 11007 11008 if ((targ_lun < CTL_MAX_LUNS) 11009 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11010 lun = ctl_softc->ctl_luns[targ_lun]; 11011 else { 11012 retval = 1; 11013 break; 11014 } 11015 11016 if (!(io->io_hdr.flags & 11017 CTL_FLAG_FROM_OTHER_SC)) { 11018 union ctl_ha_msg msg_info; 11019 11020 io->io_hdr.flags |= 11021 CTL_FLAG_SENT_2OTHER_SC; 11022 msg_info.hdr.msg_type = 11023 CTL_MSG_MANAGE_TASKS; 11024 msg_info.hdr.nexus = io->io_hdr.nexus; 11025 msg_info.task.task_action = 11026 CTL_TASK_LUN_RESET; 11027 msg_info.hdr.original_sc = NULL; 11028 msg_info.hdr.serializing_sc = NULL; 11029 if (CTL_HA_STATUS_SUCCESS != 11030 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11031 (void *)&msg_info, 11032 sizeof(msg_info), 0)) { 11033 } 11034 } 11035 11036 retval = ctl_lun_reset(lun, io, 11037 CTL_UA_LUN_RESET); 11038 break; 11039 } 11040 case CTL_TASK_TARGET_RESET: 11041 retval = ctl_target_reset(ctl_softc, io, 11042 CTL_UA_TARG_RESET); 11043 break; 11044 case CTL_TASK_BUS_RESET: 11045 retval = ctl_bus_reset(ctl_softc, io); 11046 break; 11047 case CTL_TASK_PORT_LOGIN: 11048 break; 11049 case CTL_TASK_PORT_LOGOUT: 11050 break; 11051 default: 11052 printf("ctl_run_task_queue: got unknown task " 11053 "management event %d\n", 11054 io->taskio.task_action); 11055 break; 11056 } 11057 if (retval == 0) 11058 io->io_hdr.status = CTL_SUCCESS; 11059 else 11060 io->io_hdr.status = CTL_ERROR; 11061 11062 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11063 ctl_io_hdr, links); 11064 /* 11065 * This will queue this I/O to the done queue, but the 11066 * work thread won't be able to process it until we 11067 * return and the lock is released. 11068 */ 11069 ctl_done_lock(io, /*have_lock*/ 1); 11070 break; 11071 } 11072 default: { 11073 11074 printf("%s: invalid I/O type %d msg %d cdb %x" 11075 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11076 __func__, io->io_hdr.io_type, 11077 io->io_hdr.msg_type, io->scsiio.cdb[0], 11078 (uintmax_t)io->io_hdr.nexus.initid.id, 11079 io->io_hdr.nexus.targ_port, 11080 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11081 io->io_hdr.nexus.targ_lun, 11082 (io->io_hdr.io_type == CTL_IO_TASK) ? 11083 io->taskio.tag_num : io->scsiio.tag_num); 11084 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11085 ctl_io_hdr, links); 11086 ctl_free_io_internal(io, 1); 11087 break; 11088 } 11089 } 11090 } 11091 11092 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11093 } 11094 11095 /* 11096 * For HA operation. Handle commands that come in from the other 11097 * controller. 11098 */ 11099 static void 11100 ctl_handle_isc(union ctl_io *io) 11101 { 11102 int free_io; 11103 struct ctl_lun *lun; 11104 struct ctl_softc *ctl_softc; 11105 11106 ctl_softc = control_softc; 11107 11108 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 11109 11110 switch (io->io_hdr.msg_type) { 11111 case CTL_MSG_SERIALIZE: 11112 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11113 /*have_lock*/ 0); 11114 break; 11115 case CTL_MSG_R2R: { 11116 uint8_t opcode; 11117 struct ctl_cmd_entry *entry; 11118 11119 /* 11120 * This is only used in SER_ONLY mode. 11121 */ 11122 free_io = 0; 11123 opcode = io->scsiio.cdb[0]; 11124 entry = &ctl_cmd_table[opcode]; 11125 mtx_lock(&ctl_softc->ctl_lock); 11126 if (ctl_scsiio_lun_check(ctl_softc, lun, 11127 entry, (struct ctl_scsiio *)io) != 0) { 11128 ctl_done_lock(io, /*have_lock*/ 1); 11129 mtx_unlock(&ctl_softc->ctl_lock); 11130 break; 11131 } 11132 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11133 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11134 &io->io_hdr, links); 11135 mtx_unlock(&ctl_softc->ctl_lock); 11136 break; 11137 } 11138 case CTL_MSG_FINISH_IO: 11139 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11140 free_io = 0; 11141 ctl_done_lock(io, /*have_lock*/ 0); 11142 } else { 11143 free_io = 1; 11144 mtx_lock(&ctl_softc->ctl_lock); 11145 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11146 ooa_links); 11147 STAILQ_REMOVE(&ctl_softc->task_queue, 11148 &io->io_hdr, ctl_io_hdr, links); 11149 ctl_check_blocked(lun); 11150 mtx_unlock(&ctl_softc->ctl_lock); 11151 } 11152 break; 11153 case CTL_MSG_PERS_ACTION: 11154 ctl_hndl_per_res_out_on_other_sc( 11155 (union ctl_ha_msg *)&io->presio.pr_msg); 11156 free_io = 1; 11157 break; 11158 case CTL_MSG_BAD_JUJU: 11159 free_io = 0; 11160 ctl_done_lock(io, /*have_lock*/ 0); 11161 break; 11162 case CTL_MSG_DATAMOVE: 11163 /* Only used in XFER mode */ 11164 free_io = 0; 11165 ctl_datamove_remote(io); 11166 break; 11167 case CTL_MSG_DATAMOVE_DONE: 11168 /* Only used in XFER mode */ 11169 free_io = 0; 11170 io->scsiio.be_move_done(io); 11171 break; 11172 default: 11173 free_io = 1; 11174 printf("%s: Invalid message type %d\n", 11175 __func__, io->io_hdr.msg_type); 11176 break; 11177 } 11178 if (free_io) 11179 ctl_free_io_internal(io, 0); 11180 11181 } 11182 11183 11184 /* 11185 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11186 * there is no match. 11187 */ 11188 static ctl_lun_error_pattern 11189 ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11190 { 11191 struct ctl_cmd_entry *entry; 11192 ctl_lun_error_pattern filtered_pattern, pattern; 11193 uint8_t opcode; 11194 11195 pattern = desc->error_pattern; 11196 11197 /* 11198 * XXX KDM we need more data passed into this function to match a 11199 * custom pattern, and we actually need to implement custom pattern 11200 * matching. 11201 */ 11202 if (pattern & CTL_LUN_PAT_CMD) 11203 return (CTL_LUN_PAT_CMD); 11204 11205 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11206 return (CTL_LUN_PAT_ANY); 11207 11208 opcode = ctsio->cdb[0]; 11209 entry = &ctl_cmd_table[opcode]; 11210 11211 filtered_pattern = entry->pattern & pattern; 11212 11213 /* 11214 * If the user requested specific flags in the pattern (e.g. 11215 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11216 * flags. 11217 * 11218 * If the user did not specify any flags, it doesn't matter whether 11219 * or not the command supports the flags. 11220 */ 11221 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11222 (pattern & ~CTL_LUN_PAT_MASK)) 11223 return (CTL_LUN_PAT_NONE); 11224 11225 /* 11226 * If the user asked for a range check, see if the requested LBA 11227 * range overlaps with this command's LBA range. 11228 */ 11229 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11230 uint64_t lba1; 11231 uint32_t len1; 11232 ctl_action action; 11233 int retval; 11234 11235 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11236 if (retval != 0) 11237 return (CTL_LUN_PAT_NONE); 11238 11239 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11240 desc->lba_range.len); 11241 /* 11242 * A "pass" means that the LBA ranges don't overlap, so 11243 * this doesn't match the user's range criteria. 11244 */ 11245 if (action == CTL_ACTION_PASS) 11246 return (CTL_LUN_PAT_NONE); 11247 } 11248 11249 return (filtered_pattern); 11250 } 11251 11252 /* 11253 * Called with the CTL lock held. 11254 */ 11255 static void 11256 ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11257 { 11258 struct ctl_error_desc *desc, *desc2; 11259 11260 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11261 ctl_lun_error_pattern pattern; 11262 /* 11263 * Check to see whether this particular command matches 11264 * the pattern in the descriptor. 11265 */ 11266 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11267 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11268 continue; 11269 11270 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11271 case CTL_LUN_INJ_ABORTED: 11272 ctl_set_aborted(&io->scsiio); 11273 break; 11274 case CTL_LUN_INJ_MEDIUM_ERR: 11275 ctl_set_medium_error(&io->scsiio); 11276 break; 11277 case CTL_LUN_INJ_UA: 11278 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11279 * OCCURRED */ 11280 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11281 break; 11282 case CTL_LUN_INJ_CUSTOM: 11283 /* 11284 * We're assuming the user knows what he is doing. 11285 * Just copy the sense information without doing 11286 * checks. 11287 */ 11288 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11289 ctl_min(sizeof(desc->custom_sense), 11290 sizeof(io->scsiio.sense_data))); 11291 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11292 io->scsiio.sense_len = SSD_FULL_SIZE; 11293 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11294 break; 11295 case CTL_LUN_INJ_NONE: 11296 default: 11297 /* 11298 * If this is an error injection type we don't know 11299 * about, clear the continuous flag (if it is set) 11300 * so it will get deleted below. 11301 */ 11302 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11303 break; 11304 } 11305 /* 11306 * By default, each error injection action is a one-shot 11307 */ 11308 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11309 continue; 11310 11311 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11312 11313 free(desc, M_CTL); 11314 } 11315 } 11316 11317 #ifdef CTL_IO_DELAY 11318 static void 11319 ctl_datamove_timer_wakeup(void *arg) 11320 { 11321 union ctl_io *io; 11322 11323 io = (union ctl_io *)arg; 11324 11325 ctl_datamove(io); 11326 } 11327 #endif /* CTL_IO_DELAY */ 11328 11329 /* 11330 * Assumption: caller does NOT hold ctl_lock 11331 */ 11332 void 11333 ctl_datamove(union ctl_io *io) 11334 { 11335 void (*fe_datamove)(union ctl_io *io); 11336 11337 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11338 11339 #ifdef CTL_TIME_IO 11340 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11341 char str[256]; 11342 char path_str[64]; 11343 struct sbuf sb; 11344 11345 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11346 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11347 11348 sbuf_cat(&sb, path_str); 11349 switch (io->io_hdr.io_type) { 11350 case CTL_IO_SCSI: 11351 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11352 sbuf_printf(&sb, "\n"); 11353 sbuf_cat(&sb, path_str); 11354 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11355 io->scsiio.tag_num, io->scsiio.tag_type); 11356 break; 11357 case CTL_IO_TASK: 11358 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11359 "Tag Type: %d\n", io->taskio.task_action, 11360 io->taskio.tag_num, io->taskio.tag_type); 11361 break; 11362 default: 11363 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11364 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11365 break; 11366 } 11367 sbuf_cat(&sb, path_str); 11368 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11369 (intmax_t)time_uptime - io->io_hdr.start_time); 11370 sbuf_finish(&sb); 11371 printf("%s", sbuf_data(&sb)); 11372 } 11373 #endif /* CTL_TIME_IO */ 11374 11375 mtx_lock(&control_softc->ctl_lock); 11376 #ifdef CTL_IO_DELAY 11377 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11378 struct ctl_lun *lun; 11379 11380 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11381 11382 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11383 } else { 11384 struct ctl_lun *lun; 11385 11386 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11387 if ((lun != NULL) 11388 && (lun->delay_info.datamove_delay > 0)) { 11389 struct callout *callout; 11390 11391 callout = (struct callout *)&io->io_hdr.timer_bytes; 11392 callout_init(callout, /*mpsafe*/ 1); 11393 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11394 callout_reset(callout, 11395 lun->delay_info.datamove_delay * hz, 11396 ctl_datamove_timer_wakeup, io); 11397 if (lun->delay_info.datamove_type == 11398 CTL_DELAY_TYPE_ONESHOT) 11399 lun->delay_info.datamove_delay = 0; 11400 mtx_unlock(&control_softc->ctl_lock); 11401 return; 11402 } 11403 } 11404 #endif 11405 /* 11406 * If we have any pending task management commands, process them 11407 * first. This is necessary to eliminate a race condition with the 11408 * FETD: 11409 * 11410 * - FETD submits a task management command, like an abort. 11411 * - Back end calls fe_datamove() to move the data for the aborted 11412 * command. The FETD can't really accept it, but if it did, it 11413 * would end up transmitting data for a command that the initiator 11414 * told us to abort. 11415 * 11416 * We close the race by processing all pending task management 11417 * commands here (we can't block!), and then check this I/O to see 11418 * if it has been aborted. If so, return it to the back end with 11419 * bad status, so the back end can say return an error to the back end 11420 * and then when the back end returns an error, we can return the 11421 * aborted command to the FETD, so it can clean up its resources. 11422 */ 11423 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11424 ctl_run_task_queue(control_softc); 11425 11426 /* 11427 * This command has been aborted. Set the port status, so we fail 11428 * the data move. 11429 */ 11430 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11431 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11432 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11433 io->io_hdr.nexus.targ_port, 11434 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11435 io->io_hdr.nexus.targ_lun); 11436 io->io_hdr.status = CTL_CMD_ABORTED; 11437 io->io_hdr.port_status = 31337; 11438 mtx_unlock(&control_softc->ctl_lock); 11439 /* 11440 * Note that the backend, in this case, will get the 11441 * callback in its context. In other cases it may get 11442 * called in the frontend's interrupt thread context. 11443 */ 11444 io->scsiio.be_move_done(io); 11445 return; 11446 } 11447 11448 /* 11449 * If we're in XFER mode and this I/O is from the other shelf 11450 * controller, we need to send the DMA to the other side to 11451 * actually transfer the data to/from the host. In serialize only 11452 * mode the transfer happens below CTL and ctl_datamove() is only 11453 * called on the machine that originally received the I/O. 11454 */ 11455 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11456 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11457 union ctl_ha_msg msg; 11458 uint32_t sg_entries_sent; 11459 int do_sg_copy; 11460 int i; 11461 11462 memset(&msg, 0, sizeof(msg)); 11463 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11464 msg.hdr.original_sc = io->io_hdr.original_sc; 11465 msg.hdr.serializing_sc = io; 11466 msg.hdr.nexus = io->io_hdr.nexus; 11467 msg.dt.flags = io->io_hdr.flags; 11468 /* 11469 * We convert everything into a S/G list here. We can't 11470 * pass by reference, only by value between controllers. 11471 * So we can't pass a pointer to the S/G list, only as many 11472 * S/G entries as we can fit in here. If it's possible for 11473 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11474 * then we need to break this up into multiple transfers. 11475 */ 11476 if (io->scsiio.kern_sg_entries == 0) { 11477 msg.dt.kern_sg_entries = 1; 11478 /* 11479 * If this is in cached memory, flush the cache 11480 * before we send the DMA request to the other 11481 * controller. We want to do this in either the 11482 * read or the write case. The read case is 11483 * straightforward. In the write case, we want to 11484 * make sure nothing is in the local cache that 11485 * could overwrite the DMAed data. 11486 */ 11487 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11488 /* 11489 * XXX KDM use bus_dmamap_sync() here. 11490 */ 11491 } 11492 11493 /* 11494 * Convert to a physical address if this is a 11495 * virtual address. 11496 */ 11497 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11498 msg.dt.sg_list[0].addr = 11499 io->scsiio.kern_data_ptr; 11500 } else { 11501 /* 11502 * XXX KDM use busdma here! 11503 */ 11504 #if 0 11505 msg.dt.sg_list[0].addr = (void *) 11506 vtophys(io->scsiio.kern_data_ptr); 11507 #endif 11508 } 11509 11510 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11511 do_sg_copy = 0; 11512 } else { 11513 struct ctl_sg_entry *sgl; 11514 11515 do_sg_copy = 1; 11516 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11517 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11518 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11519 /* 11520 * XXX KDM use bus_dmamap_sync() here. 11521 */ 11522 } 11523 } 11524 11525 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11526 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11527 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11528 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11529 msg.dt.sg_sequence = 0; 11530 11531 /* 11532 * Loop until we've sent all of the S/G entries. On the 11533 * other end, we'll recompose these S/G entries into one 11534 * contiguous list before passing it to the 11535 */ 11536 for (sg_entries_sent = 0; sg_entries_sent < 11537 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11538 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11539 sizeof(msg.dt.sg_list[0])), 11540 msg.dt.kern_sg_entries - sg_entries_sent); 11541 11542 if (do_sg_copy != 0) { 11543 struct ctl_sg_entry *sgl; 11544 int j; 11545 11546 sgl = (struct ctl_sg_entry *) 11547 io->scsiio.kern_data_ptr; 11548 /* 11549 * If this is in cached memory, flush the cache 11550 * before we send the DMA request to the other 11551 * controller. We want to do this in either 11552 * the * read or the write case. The read 11553 * case is straightforward. In the write 11554 * case, we want to make sure nothing is 11555 * in the local cache that could overwrite 11556 * the DMAed data. 11557 */ 11558 11559 for (i = sg_entries_sent, j = 0; 11560 i < msg.dt.cur_sg_entries; i++, j++) { 11561 if ((io->io_hdr.flags & 11562 CTL_FLAG_NO_DATASYNC) == 0) { 11563 /* 11564 * XXX KDM use bus_dmamap_sync() 11565 */ 11566 } 11567 if ((io->io_hdr.flags & 11568 CTL_FLAG_BUS_ADDR) == 0) { 11569 /* 11570 * XXX KDM use busdma. 11571 */ 11572 #if 0 11573 msg.dt.sg_list[j].addr =(void *) 11574 vtophys(sgl[i].addr); 11575 #endif 11576 } else { 11577 msg.dt.sg_list[j].addr = 11578 sgl[i].addr; 11579 } 11580 msg.dt.sg_list[j].len = sgl[i].len; 11581 } 11582 } 11583 11584 sg_entries_sent += msg.dt.cur_sg_entries; 11585 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11586 msg.dt.sg_last = 1; 11587 else 11588 msg.dt.sg_last = 0; 11589 11590 /* 11591 * XXX KDM drop and reacquire the lock here? 11592 */ 11593 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11594 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11595 /* 11596 * XXX do something here. 11597 */ 11598 } 11599 11600 msg.dt.sent_sg_entries = sg_entries_sent; 11601 } 11602 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11603 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11604 ctl_failover_io(io, /*have_lock*/ 1); 11605 11606 } else { 11607 11608 /* 11609 * Lookup the fe_datamove() function for this particular 11610 * front end. 11611 */ 11612 fe_datamove = 11613 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11614 mtx_unlock(&control_softc->ctl_lock); 11615 11616 fe_datamove(io); 11617 } 11618 } 11619 11620 static void 11621 ctl_send_datamove_done(union ctl_io *io, int have_lock) 11622 { 11623 union ctl_ha_msg msg; 11624 int isc_status; 11625 11626 memset(&msg, 0, sizeof(msg)); 11627 11628 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11629 msg.hdr.original_sc = io; 11630 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11631 msg.hdr.nexus = io->io_hdr.nexus; 11632 msg.hdr.status = io->io_hdr.status; 11633 msg.scsi.tag_num = io->scsiio.tag_num; 11634 msg.scsi.tag_type = io->scsiio.tag_type; 11635 msg.scsi.scsi_status = io->scsiio.scsi_status; 11636 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11637 sizeof(io->scsiio.sense_data)); 11638 msg.scsi.sense_len = io->scsiio.sense_len; 11639 msg.scsi.sense_residual = io->scsiio.sense_residual; 11640 msg.scsi.fetd_status = io->io_hdr.port_status; 11641 msg.scsi.residual = io->scsiio.residual; 11642 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11643 11644 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11645 ctl_failover_io(io, /*have_lock*/ have_lock); 11646 return; 11647 } 11648 11649 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11650 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11651 /* XXX do something if this fails */ 11652 } 11653 11654 } 11655 11656 /* 11657 * The DMA to the remote side is done, now we need to tell the other side 11658 * we're done so it can continue with its data movement. 11659 */ 11660 static void 11661 ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 11662 { 11663 union ctl_io *io; 11664 11665 io = rq->context; 11666 11667 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11668 printf("%s: ISC DMA write failed with error %d", __func__, 11669 rq->ret); 11670 ctl_set_internal_failure(&io->scsiio, 11671 /*sks_valid*/ 1, 11672 /*retry_count*/ rq->ret); 11673 } 11674 11675 ctl_dt_req_free(rq); 11676 11677 /* 11678 * In this case, we had to malloc the memory locally. Free it. 11679 */ 11680 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11681 int i; 11682 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11683 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11684 } 11685 /* 11686 * The data is in local and remote memory, so now we need to send 11687 * status (good or back) back to the other side. 11688 */ 11689 ctl_send_datamove_done(io, /*have_lock*/ 0); 11690 } 11691 11692 /* 11693 * We've moved the data from the host/controller into local memory. Now we 11694 * need to push it over to the remote controller's memory. 11695 */ 11696 static int 11697 ctl_datamove_remote_dm_write_cb(union ctl_io *io) 11698 { 11699 int retval; 11700 11701 retval = 0; 11702 11703 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 11704 ctl_datamove_remote_write_cb); 11705 11706 return (retval); 11707 } 11708 11709 static void 11710 ctl_datamove_remote_write(union ctl_io *io) 11711 { 11712 int retval; 11713 void (*fe_datamove)(union ctl_io *io); 11714 11715 /* 11716 * - Get the data from the host/HBA into local memory. 11717 * - DMA memory from the local controller to the remote controller. 11718 * - Send status back to the remote controller. 11719 */ 11720 11721 retval = ctl_datamove_remote_sgl_setup(io); 11722 if (retval != 0) 11723 return; 11724 11725 /* Switch the pointer over so the FETD knows what to do */ 11726 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11727 11728 /* 11729 * Use a custom move done callback, since we need to send completion 11730 * back to the other controller, not to the backend on this side. 11731 */ 11732 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 11733 11734 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11735 11736 fe_datamove(io); 11737 11738 return; 11739 11740 } 11741 11742 static int 11743 ctl_datamove_remote_dm_read_cb(union ctl_io *io) 11744 { 11745 #if 0 11746 char str[256]; 11747 char path_str[64]; 11748 struct sbuf sb; 11749 #endif 11750 11751 /* 11752 * In this case, we had to malloc the memory locally. Free it. 11753 */ 11754 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11755 int i; 11756 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11757 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11758 } 11759 11760 #if 0 11761 scsi_path_string(io, path_str, sizeof(path_str)); 11762 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11763 sbuf_cat(&sb, path_str); 11764 scsi_command_string(&io->scsiio, NULL, &sb); 11765 sbuf_printf(&sb, "\n"); 11766 sbuf_cat(&sb, path_str); 11767 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11768 io->scsiio.tag_num, io->scsiio.tag_type); 11769 sbuf_cat(&sb, path_str); 11770 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 11771 io->io_hdr.flags, io->io_hdr.status); 11772 sbuf_finish(&sb); 11773 printk("%s", sbuf_data(&sb)); 11774 #endif 11775 11776 11777 /* 11778 * The read is done, now we need to send status (good or bad) back 11779 * to the other side. 11780 */ 11781 ctl_send_datamove_done(io, /*have_lock*/ 0); 11782 11783 return (0); 11784 } 11785 11786 static void 11787 ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 11788 { 11789 union ctl_io *io; 11790 void (*fe_datamove)(union ctl_io *io); 11791 11792 io = rq->context; 11793 11794 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11795 printf("%s: ISC DMA read failed with error %d", __func__, 11796 rq->ret); 11797 ctl_set_internal_failure(&io->scsiio, 11798 /*sks_valid*/ 1, 11799 /*retry_count*/ rq->ret); 11800 } 11801 11802 ctl_dt_req_free(rq); 11803 11804 /* Switch the pointer over so the FETD knows what to do */ 11805 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11806 11807 /* 11808 * Use a custom move done callback, since we need to send completion 11809 * back to the other controller, not to the backend on this side. 11810 */ 11811 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 11812 11813 /* XXX KDM add checks like the ones in ctl_datamove? */ 11814 11815 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11816 11817 fe_datamove(io); 11818 } 11819 11820 static int 11821 ctl_datamove_remote_sgl_setup(union ctl_io *io) 11822 { 11823 struct ctl_sg_entry *local_sglist, *remote_sglist; 11824 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 11825 struct ctl_softc *softc; 11826 int retval; 11827 int i; 11828 11829 retval = 0; 11830 softc = control_softc; 11831 11832 local_sglist = io->io_hdr.local_sglist; 11833 local_dma_sglist = io->io_hdr.local_dma_sglist; 11834 remote_sglist = io->io_hdr.remote_sglist; 11835 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11836 11837 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 11838 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 11839 local_sglist[i].len = remote_sglist[i].len; 11840 11841 /* 11842 * XXX Detect the situation where the RS-level I/O 11843 * redirector on the other side has already read the 11844 * data off of the AOR RS on this side, and 11845 * transferred it to remote (mirror) memory on the 11846 * other side. Since we already have the data in 11847 * memory here, we just need to use it. 11848 * 11849 * XXX KDM this can probably be removed once we 11850 * get the cache device code in and take the 11851 * current AOR implementation out. 11852 */ 11853 #ifdef NEEDTOPORT 11854 if ((remote_sglist[i].addr >= 11855 (void *)vtophys(softc->mirr->addr)) 11856 && (remote_sglist[i].addr < 11857 ((void *)vtophys(softc->mirr->addr) + 11858 CacheMirrorOffset))) { 11859 local_sglist[i].addr = remote_sglist[i].addr - 11860 CacheMirrorOffset; 11861 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 11862 CTL_FLAG_DATA_IN) 11863 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 11864 } else { 11865 local_sglist[i].addr = remote_sglist[i].addr + 11866 CacheMirrorOffset; 11867 } 11868 #endif 11869 #if 0 11870 printf("%s: local %p, remote %p, len %d\n", 11871 __func__, local_sglist[i].addr, 11872 remote_sglist[i].addr, local_sglist[i].len); 11873 #endif 11874 } 11875 } else { 11876 uint32_t len_to_go; 11877 11878 /* 11879 * In this case, we don't have automatically allocated 11880 * memory for this I/O on this controller. This typically 11881 * happens with internal CTL I/O -- e.g. inquiry, mode 11882 * sense, etc. Anything coming from RAIDCore will have 11883 * a mirror area available. 11884 */ 11885 len_to_go = io->scsiio.kern_data_len; 11886 11887 /* 11888 * Clear the no datasync flag, we have to use malloced 11889 * buffers. 11890 */ 11891 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 11892 11893 /* 11894 * The difficult thing here is that the size of the various 11895 * S/G segments may be different than the size from the 11896 * remote controller. That'll make it harder when DMAing 11897 * the data back to the other side. 11898 */ 11899 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 11900 sizeof(io->io_hdr.remote_sglist[0])) && 11901 (len_to_go > 0); i++) { 11902 local_sglist[i].len = ctl_min(len_to_go, 131072); 11903 CTL_SIZE_8B(local_dma_sglist[i].len, 11904 local_sglist[i].len); 11905 local_sglist[i].addr = 11906 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 11907 11908 local_dma_sglist[i].addr = local_sglist[i].addr; 11909 11910 if (local_sglist[i].addr == NULL) { 11911 int j; 11912 11913 printf("malloc failed for %zd bytes!", 11914 local_dma_sglist[i].len); 11915 for (j = 0; j < i; j++) { 11916 free(local_sglist[j].addr, M_CTL); 11917 } 11918 ctl_set_internal_failure(&io->scsiio, 11919 /*sks_valid*/ 1, 11920 /*retry_count*/ 4857); 11921 retval = 1; 11922 goto bailout_error; 11923 11924 } 11925 /* XXX KDM do we need a sync here? */ 11926 11927 len_to_go -= local_sglist[i].len; 11928 } 11929 /* 11930 * Reset the number of S/G entries accordingly. The 11931 * original number of S/G entries is available in 11932 * rem_sg_entries. 11933 */ 11934 io->scsiio.kern_sg_entries = i; 11935 11936 #if 0 11937 printf("%s: kern_sg_entries = %d\n", __func__, 11938 io->scsiio.kern_sg_entries); 11939 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11940 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 11941 local_sglist[i].addr, local_sglist[i].len, 11942 local_dma_sglist[i].len); 11943 #endif 11944 } 11945 11946 11947 return (retval); 11948 11949 bailout_error: 11950 11951 ctl_send_datamove_done(io, /*have_lock*/ 0); 11952 11953 return (retval); 11954 } 11955 11956 static int 11957 ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 11958 ctl_ha_dt_cb callback) 11959 { 11960 struct ctl_ha_dt_req *rq; 11961 struct ctl_sg_entry *remote_sglist, *local_sglist; 11962 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 11963 uint32_t local_used, remote_used, total_used; 11964 int retval; 11965 int i, j; 11966 11967 retval = 0; 11968 11969 rq = ctl_dt_req_alloc(); 11970 11971 /* 11972 * If we failed to allocate the request, and if the DMA didn't fail 11973 * anyway, set busy status. This is just a resource allocation 11974 * failure. 11975 */ 11976 if ((rq == NULL) 11977 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 11978 ctl_set_busy(&io->scsiio); 11979 11980 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 11981 11982 if (rq != NULL) 11983 ctl_dt_req_free(rq); 11984 11985 /* 11986 * The data move failed. We need to return status back 11987 * to the other controller. No point in trying to DMA 11988 * data to the remote controller. 11989 */ 11990 11991 ctl_send_datamove_done(io, /*have_lock*/ 0); 11992 11993 retval = 1; 11994 11995 goto bailout; 11996 } 11997 11998 local_sglist = io->io_hdr.local_sglist; 11999 local_dma_sglist = io->io_hdr.local_dma_sglist; 12000 remote_sglist = io->io_hdr.remote_sglist; 12001 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12002 local_used = 0; 12003 remote_used = 0; 12004 total_used = 0; 12005 12006 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12007 rq->ret = CTL_HA_STATUS_SUCCESS; 12008 rq->context = io; 12009 callback(rq); 12010 goto bailout; 12011 } 12012 12013 /* 12014 * Pull/push the data over the wire from/to the other controller. 12015 * This takes into account the possibility that the local and 12016 * remote sglists may not be identical in terms of the size of 12017 * the elements and the number of elements. 12018 * 12019 * One fundamental assumption here is that the length allocated for 12020 * both the local and remote sglists is identical. Otherwise, we've 12021 * essentially got a coding error of some sort. 12022 */ 12023 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12024 int isc_ret; 12025 uint32_t cur_len, dma_length; 12026 uint8_t *tmp_ptr; 12027 12028 rq->id = CTL_HA_DATA_CTL; 12029 rq->command = command; 12030 rq->context = io; 12031 12032 /* 12033 * Both pointers should be aligned. But it is possible 12034 * that the allocation length is not. They should both 12035 * also have enough slack left over at the end, though, 12036 * to round up to the next 8 byte boundary. 12037 */ 12038 cur_len = ctl_min(local_sglist[i].len - local_used, 12039 remote_sglist[j].len - remote_used); 12040 12041 /* 12042 * In this case, we have a size issue and need to decrease 12043 * the size, except in the case where we actually have less 12044 * than 8 bytes left. In that case, we need to increase 12045 * the DMA length to get the last bit. 12046 */ 12047 if ((cur_len & 0x7) != 0) { 12048 if (cur_len > 0x7) { 12049 cur_len = cur_len - (cur_len & 0x7); 12050 dma_length = cur_len; 12051 } else { 12052 CTL_SIZE_8B(dma_length, cur_len); 12053 } 12054 12055 } else 12056 dma_length = cur_len; 12057 12058 /* 12059 * If we had to allocate memory for this I/O, instead of using 12060 * the non-cached mirror memory, we'll need to flush the cache 12061 * before trying to DMA to the other controller. 12062 * 12063 * We could end up doing this multiple times for the same 12064 * segment if we have a larger local segment than remote 12065 * segment. That shouldn't be an issue. 12066 */ 12067 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12068 /* 12069 * XXX KDM use bus_dmamap_sync() here. 12070 */ 12071 } 12072 12073 rq->size = dma_length; 12074 12075 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12076 tmp_ptr += local_used; 12077 12078 /* Use physical addresses when talking to ISC hardware */ 12079 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12080 /* XXX KDM use busdma */ 12081 #if 0 12082 rq->local = vtophys(tmp_ptr); 12083 #endif 12084 } else 12085 rq->local = tmp_ptr; 12086 12087 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12088 tmp_ptr += remote_used; 12089 rq->remote = tmp_ptr; 12090 12091 rq->callback = NULL; 12092 12093 local_used += cur_len; 12094 if (local_used >= local_sglist[i].len) { 12095 i++; 12096 local_used = 0; 12097 } 12098 12099 remote_used += cur_len; 12100 if (remote_used >= remote_sglist[j].len) { 12101 j++; 12102 remote_used = 0; 12103 } 12104 total_used += cur_len; 12105 12106 if (total_used >= io->scsiio.kern_data_len) 12107 rq->callback = callback; 12108 12109 if ((rq->size & 0x7) != 0) { 12110 printf("%s: warning: size %d is not on 8b boundary\n", 12111 __func__, rq->size); 12112 } 12113 if (((uintptr_t)rq->local & 0x7) != 0) { 12114 printf("%s: warning: local %p not on 8b boundary\n", 12115 __func__, rq->local); 12116 } 12117 if (((uintptr_t)rq->remote & 0x7) != 0) { 12118 printf("%s: warning: remote %p not on 8b boundary\n", 12119 __func__, rq->local); 12120 } 12121 #if 0 12122 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12123 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12124 rq->local, rq->remote, rq->size); 12125 #endif 12126 12127 isc_ret = ctl_dt_single(rq); 12128 if (isc_ret == CTL_HA_STATUS_WAIT) 12129 continue; 12130 12131 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12132 rq->ret = CTL_HA_STATUS_SUCCESS; 12133 } else { 12134 rq->ret = isc_ret; 12135 } 12136 callback(rq); 12137 goto bailout; 12138 } 12139 12140 bailout: 12141 return (retval); 12142 12143 } 12144 12145 static void 12146 ctl_datamove_remote_read(union ctl_io *io) 12147 { 12148 int retval; 12149 int i; 12150 12151 /* 12152 * This will send an error to the other controller in the case of a 12153 * failure. 12154 */ 12155 retval = ctl_datamove_remote_sgl_setup(io); 12156 if (retval != 0) 12157 return; 12158 12159 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12160 ctl_datamove_remote_read_cb); 12161 if ((retval != 0) 12162 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12163 /* 12164 * Make sure we free memory if there was an error.. The 12165 * ctl_datamove_remote_xfer() function will send the 12166 * datamove done message, or call the callback with an 12167 * error if there is a problem. 12168 */ 12169 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12170 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12171 } 12172 12173 return; 12174 } 12175 12176 /* 12177 * Process a datamove request from the other controller. This is used for 12178 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12179 * first. Once that is complete, the data gets DMAed into the remote 12180 * controller's memory. For reads, we DMA from the remote controller's 12181 * memory into our memory first, and then move it out to the FETD. 12182 * 12183 * Should be called without the ctl_lock held. 12184 */ 12185 static void 12186 ctl_datamove_remote(union ctl_io *io) 12187 { 12188 struct ctl_softc *softc; 12189 12190 softc = control_softc; 12191 12192 /* 12193 * Note that we look for an aborted I/O here, but don't do some of 12194 * the other checks that ctl_datamove() normally does. We don't 12195 * need to run the task queue, because this I/O is on the ISC 12196 * queue, which is executed by the work thread after the task queue. 12197 * We don't need to run the datamove delay code, since that should 12198 * have been done if need be on the other controller. 12199 */ 12200 mtx_lock(&softc->ctl_lock); 12201 12202 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12203 12204 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12205 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12206 io->io_hdr.nexus.targ_port, 12207 io->io_hdr.nexus.targ_target.id, 12208 io->io_hdr.nexus.targ_lun); 12209 io->io_hdr.status = CTL_CMD_ABORTED; 12210 io->io_hdr.port_status = 31338; 12211 12212 mtx_unlock(&softc->ctl_lock); 12213 12214 ctl_send_datamove_done(io, /*have_lock*/ 0); 12215 12216 return; 12217 } 12218 12219 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12220 mtx_unlock(&softc->ctl_lock); 12221 ctl_datamove_remote_write(io); 12222 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12223 mtx_unlock(&softc->ctl_lock); 12224 ctl_datamove_remote_read(io); 12225 } else { 12226 union ctl_ha_msg msg; 12227 struct scsi_sense_data *sense; 12228 uint8_t sks[3]; 12229 int retry_count; 12230 12231 memset(&msg, 0, sizeof(msg)); 12232 12233 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12234 msg.hdr.status = CTL_SCSI_ERROR; 12235 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12236 12237 retry_count = 4243; 12238 12239 sense = &msg.scsi.sense_data; 12240 sks[0] = SSD_SCS_VALID; 12241 sks[1] = (retry_count >> 8) & 0xff; 12242 sks[2] = retry_count & 0xff; 12243 12244 /* "Internal target failure" */ 12245 scsi_set_sense_data(sense, 12246 /*sense_format*/ SSD_TYPE_NONE, 12247 /*current_error*/ 1, 12248 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12249 /*asc*/ 0x44, 12250 /*ascq*/ 0x00, 12251 /*type*/ SSD_ELEM_SKS, 12252 /*size*/ sizeof(sks), 12253 /*data*/ sks, 12254 SSD_ELEM_NONE); 12255 12256 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12257 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12258 ctl_failover_io(io, /*have_lock*/ 1); 12259 mtx_unlock(&softc->ctl_lock); 12260 return; 12261 } 12262 12263 mtx_unlock(&softc->ctl_lock); 12264 12265 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12266 CTL_HA_STATUS_SUCCESS) { 12267 /* XXX KDM what to do if this fails? */ 12268 } 12269 return; 12270 } 12271 12272 } 12273 12274 static int 12275 ctl_process_done(union ctl_io *io, int have_lock) 12276 { 12277 struct ctl_lun *lun; 12278 struct ctl_softc *ctl_softc; 12279 void (*fe_done)(union ctl_io *io); 12280 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12281 12282 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12283 12284 fe_done = 12285 control_softc->ctl_ports[targ_port]->fe_done; 12286 12287 #ifdef CTL_TIME_IO 12288 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12289 char str[256]; 12290 char path_str[64]; 12291 struct sbuf sb; 12292 12293 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12294 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12295 12296 sbuf_cat(&sb, path_str); 12297 switch (io->io_hdr.io_type) { 12298 case CTL_IO_SCSI: 12299 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12300 sbuf_printf(&sb, "\n"); 12301 sbuf_cat(&sb, path_str); 12302 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12303 io->scsiio.tag_num, io->scsiio.tag_type); 12304 break; 12305 case CTL_IO_TASK: 12306 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12307 "Tag Type: %d\n", io->taskio.task_action, 12308 io->taskio.tag_num, io->taskio.tag_type); 12309 break; 12310 default: 12311 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12312 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12313 break; 12314 } 12315 sbuf_cat(&sb, path_str); 12316 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12317 (intmax_t)time_uptime - io->io_hdr.start_time); 12318 sbuf_finish(&sb); 12319 printf("%s", sbuf_data(&sb)); 12320 } 12321 #endif /* CTL_TIME_IO */ 12322 12323 switch (io->io_hdr.io_type) { 12324 case CTL_IO_SCSI: 12325 break; 12326 case CTL_IO_TASK: 12327 ctl_io_error_print(io, NULL); 12328 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12329 ctl_free_io_internal(io, /*have_lock*/ 0); 12330 else 12331 fe_done(io); 12332 return (CTL_RETVAL_COMPLETE); 12333 break; 12334 default: 12335 printf("ctl_process_done: invalid io type %d\n", 12336 io->io_hdr.io_type); 12337 panic("ctl_process_done: invalid io type %d\n", 12338 io->io_hdr.io_type); 12339 break; /* NOTREACHED */ 12340 } 12341 12342 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12343 if (lun == NULL) { 12344 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12345 io->io_hdr.nexus.targ_lun)); 12346 fe_done(io); 12347 goto bailout; 12348 } 12349 ctl_softc = lun->ctl_softc; 12350 12351 /* 12352 * Remove this from the OOA queue. 12353 */ 12354 if (have_lock == 0) 12355 mtx_lock(&ctl_softc->ctl_lock); 12356 12357 /* 12358 * Check to see if we have any errors to inject here. We only 12359 * inject errors for commands that don't already have errors set. 12360 */ 12361 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12362 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12363 ctl_inject_error(lun, io); 12364 12365 /* 12366 * XXX KDM how do we treat commands that aren't completed 12367 * successfully? 12368 * 12369 * XXX KDM should we also track I/O latency? 12370 */ 12371 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12372 uint32_t blocksize; 12373 #ifdef CTL_TIME_IO 12374 struct bintime cur_bt; 12375 #endif 12376 12377 if ((lun->be_lun != NULL) 12378 && (lun->be_lun->blocksize != 0)) 12379 blocksize = lun->be_lun->blocksize; 12380 else 12381 blocksize = 512; 12382 12383 switch (io->io_hdr.io_type) { 12384 case CTL_IO_SCSI: { 12385 int isread; 12386 struct ctl_lba_len lbalen; 12387 12388 isread = 0; 12389 switch (io->scsiio.cdb[0]) { 12390 case READ_6: 12391 case READ_10: 12392 case READ_12: 12393 case READ_16: 12394 isread = 1; 12395 /* FALLTHROUGH */ 12396 case WRITE_6: 12397 case WRITE_10: 12398 case WRITE_12: 12399 case WRITE_16: 12400 case WRITE_VERIFY_10: 12401 case WRITE_VERIFY_12: 12402 case WRITE_VERIFY_16: 12403 memcpy(&lbalen, io->io_hdr.ctl_private[ 12404 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12405 12406 if (isread) { 12407 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12408 lbalen.len * blocksize; 12409 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12410 12411 #ifdef CTL_TIME_IO 12412 bintime_add( 12413 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12414 &io->io_hdr.dma_bt); 12415 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12416 io->io_hdr.num_dmas; 12417 getbintime(&cur_bt); 12418 bintime_sub(&cur_bt, 12419 &io->io_hdr.start_bt); 12420 12421 bintime_add( 12422 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12423 &cur_bt); 12424 12425 #if 0 12426 cs_prof_gettime(&cur_ticks); 12427 lun->stats.time[CTL_STATS_READ] += 12428 cur_ticks - 12429 io->io_hdr.start_ticks; 12430 #endif 12431 #if 0 12432 lun->stats.time[CTL_STATS_READ] += 12433 jiffies - io->io_hdr.start_time; 12434 #endif 12435 #endif /* CTL_TIME_IO */ 12436 } else { 12437 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12438 lbalen.len * blocksize; 12439 lun->stats.ports[targ_port].operations[ 12440 CTL_STATS_WRITE]++; 12441 12442 #ifdef CTL_TIME_IO 12443 bintime_add( 12444 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12445 &io->io_hdr.dma_bt); 12446 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12447 io->io_hdr.num_dmas; 12448 getbintime(&cur_bt); 12449 bintime_sub(&cur_bt, 12450 &io->io_hdr.start_bt); 12451 12452 bintime_add( 12453 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12454 &cur_bt); 12455 #if 0 12456 cs_prof_gettime(&cur_ticks); 12457 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12458 cur_ticks - 12459 io->io_hdr.start_ticks; 12460 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12461 jiffies - io->io_hdr.start_time; 12462 #endif 12463 #endif /* CTL_TIME_IO */ 12464 } 12465 break; 12466 default: 12467 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12468 12469 #ifdef CTL_TIME_IO 12470 bintime_add( 12471 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12472 &io->io_hdr.dma_bt); 12473 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12474 io->io_hdr.num_dmas; 12475 getbintime(&cur_bt); 12476 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12477 12478 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12479 &cur_bt); 12480 12481 #if 0 12482 cs_prof_gettime(&cur_ticks); 12483 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12484 cur_ticks - 12485 io->io_hdr.start_ticks; 12486 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12487 jiffies - io->io_hdr.start_time; 12488 #endif 12489 #endif /* CTL_TIME_IO */ 12490 break; 12491 } 12492 break; 12493 } 12494 default: 12495 break; 12496 } 12497 } 12498 12499 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12500 12501 /* 12502 * Run through the blocked queue on this LUN and see if anything 12503 * has become unblocked, now that this transaction is done. 12504 */ 12505 ctl_check_blocked(lun); 12506 12507 /* 12508 * If the LUN has been invalidated, free it if there is nothing 12509 * left on its OOA queue. 12510 */ 12511 if ((lun->flags & CTL_LUN_INVALID) 12512 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12513 ctl_free_lun(lun); 12514 12515 /* 12516 * If this command has been aborted, make sure we set the status 12517 * properly. The FETD is responsible for freeing the I/O and doing 12518 * whatever it needs to do to clean up its state. 12519 */ 12520 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12521 io->io_hdr.status = CTL_CMD_ABORTED; 12522 12523 /* 12524 * We print out status for every task management command. For SCSI 12525 * commands, we filter out any unit attention errors; they happen 12526 * on every boot, and would clutter up the log. Note: task 12527 * management commands aren't printed here, they are printed above, 12528 * since they should never even make it down here. 12529 */ 12530 switch (io->io_hdr.io_type) { 12531 case CTL_IO_SCSI: { 12532 int error_code, sense_key, asc, ascq; 12533 12534 sense_key = 0; 12535 12536 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12537 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12538 /* 12539 * Since this is just for printing, no need to 12540 * show errors here. 12541 */ 12542 scsi_extract_sense_len(&io->scsiio.sense_data, 12543 io->scsiio.sense_len, 12544 &error_code, 12545 &sense_key, 12546 &asc, 12547 &ascq, 12548 /*show_errors*/ 0); 12549 } 12550 12551 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12552 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12553 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12554 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12555 12556 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12557 ctl_softc->skipped_prints++; 12558 if (have_lock == 0) 12559 mtx_unlock(&ctl_softc->ctl_lock); 12560 } else { 12561 uint32_t skipped_prints; 12562 12563 skipped_prints = ctl_softc->skipped_prints; 12564 12565 ctl_softc->skipped_prints = 0; 12566 ctl_softc->last_print_jiffies = time_uptime; 12567 12568 if (have_lock == 0) 12569 mtx_unlock(&ctl_softc->ctl_lock); 12570 if (skipped_prints > 0) { 12571 #ifdef NEEDTOPORT 12572 csevent_log(CSC_CTL | CSC_SHELF_SW | 12573 CTL_ERROR_REPORT, 12574 csevent_LogType_Trace, 12575 csevent_Severity_Information, 12576 csevent_AlertLevel_Green, 12577 csevent_FRU_Firmware, 12578 csevent_FRU_Unknown, 12579 "High CTL error volume, %d prints " 12580 "skipped", skipped_prints); 12581 #endif 12582 } 12583 ctl_io_error_print(io, NULL); 12584 } 12585 } else { 12586 if (have_lock == 0) 12587 mtx_unlock(&ctl_softc->ctl_lock); 12588 } 12589 break; 12590 } 12591 case CTL_IO_TASK: 12592 if (have_lock == 0) 12593 mtx_unlock(&ctl_softc->ctl_lock); 12594 ctl_io_error_print(io, NULL); 12595 break; 12596 default: 12597 if (have_lock == 0) 12598 mtx_unlock(&ctl_softc->ctl_lock); 12599 break; 12600 } 12601 12602 /* 12603 * Tell the FETD or the other shelf controller we're done with this 12604 * command. Note that only SCSI commands get to this point. Task 12605 * management commands are completed above. 12606 * 12607 * We only send status to the other controller if we're in XFER 12608 * mode. In SER_ONLY mode, the I/O is done on the controller that 12609 * received the I/O (from CTL's perspective), and so the status is 12610 * generated there. 12611 * 12612 * XXX KDM if we hold the lock here, we could cause a deadlock 12613 * if the frontend comes back in in this context to queue 12614 * something. 12615 */ 12616 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12617 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12618 union ctl_ha_msg msg; 12619 12620 memset(&msg, 0, sizeof(msg)); 12621 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12622 msg.hdr.original_sc = io->io_hdr.original_sc; 12623 msg.hdr.nexus = io->io_hdr.nexus; 12624 msg.hdr.status = io->io_hdr.status; 12625 msg.scsi.scsi_status = io->scsiio.scsi_status; 12626 msg.scsi.tag_num = io->scsiio.tag_num; 12627 msg.scsi.tag_type = io->scsiio.tag_type; 12628 msg.scsi.sense_len = io->scsiio.sense_len; 12629 msg.scsi.sense_residual = io->scsiio.sense_residual; 12630 msg.scsi.residual = io->scsiio.residual; 12631 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12632 sizeof(io->scsiio.sense_data)); 12633 /* 12634 * We copy this whether or not this is an I/O-related 12635 * command. Otherwise, we'd have to go and check to see 12636 * whether it's a read/write command, and it really isn't 12637 * worth it. 12638 */ 12639 memcpy(&msg.scsi.lbalen, 12640 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12641 sizeof(msg.scsi.lbalen)); 12642 12643 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12644 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12645 /* XXX do something here */ 12646 } 12647 12648 ctl_free_io_internal(io, /*have_lock*/ 0); 12649 } else 12650 fe_done(io); 12651 12652 bailout: 12653 12654 return (CTL_RETVAL_COMPLETE); 12655 } 12656 12657 /* 12658 * Front end should call this if it doesn't do autosense. When the request 12659 * sense comes back in from the initiator, we'll dequeue this and send it. 12660 */ 12661 int 12662 ctl_queue_sense(union ctl_io *io) 12663 { 12664 struct ctl_lun *lun; 12665 struct ctl_softc *ctl_softc; 12666 uint32_t initidx; 12667 12668 ctl_softc = control_softc; 12669 12670 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 12671 12672 /* 12673 * LUN lookup will likely move to the ctl_work_thread() once we 12674 * have our new queueing infrastructure (that doesn't put things on 12675 * a per-LUN queue initially). That is so that we can handle 12676 * things like an INQUIRY to a LUN that we don't have enabled. We 12677 * can't deal with that right now. 12678 */ 12679 mtx_lock(&ctl_softc->ctl_lock); 12680 12681 /* 12682 * If we don't have a LUN for this, just toss the sense 12683 * information. 12684 */ 12685 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 12686 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 12687 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 12688 else 12689 goto bailout; 12690 12691 initidx = ctl_get_initindex(&io->io_hdr.nexus); 12692 12693 /* 12694 * Already have CA set for this LUN...toss the sense information. 12695 */ 12696 if (ctl_is_set(lun->have_ca, initidx)) 12697 goto bailout; 12698 12699 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 12700 ctl_min(sizeof(lun->pending_sense[initidx].sense), 12701 sizeof(io->scsiio.sense_data))); 12702 ctl_set_mask(lun->have_ca, initidx); 12703 12704 bailout: 12705 mtx_unlock(&ctl_softc->ctl_lock); 12706 12707 ctl_free_io(io); 12708 12709 return (CTL_RETVAL_COMPLETE); 12710 } 12711 12712 /* 12713 * Primary command inlet from frontend ports. All SCSI and task I/O 12714 * requests must go through this function. 12715 */ 12716 int 12717 ctl_queue(union ctl_io *io) 12718 { 12719 struct ctl_softc *ctl_softc; 12720 12721 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 12722 12723 ctl_softc = control_softc; 12724 12725 #ifdef CTL_TIME_IO 12726 io->io_hdr.start_time = time_uptime; 12727 getbintime(&io->io_hdr.start_bt); 12728 #endif /* CTL_TIME_IO */ 12729 12730 mtx_lock(&ctl_softc->ctl_lock); 12731 12732 switch (io->io_hdr.io_type) { 12733 case CTL_IO_SCSI: 12734 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 12735 links); 12736 break; 12737 case CTL_IO_TASK: 12738 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 12739 /* 12740 * Set the task pending flag. This is necessary to close a 12741 * race condition with the FETD: 12742 * 12743 * - FETD submits a task management command, like an abort. 12744 * - Back end calls fe_datamove() to move the data for the 12745 * aborted command. The FETD can't really accept it, but 12746 * if it did, it would end up transmitting data for a 12747 * command that the initiator told us to abort. 12748 * 12749 * We close the race condition by setting the flag here, 12750 * and checking it in ctl_datamove(), before calling the 12751 * FETD's fe_datamove routine. If we've got a task 12752 * pending, we run the task queue and then check to see 12753 * whether our particular I/O has been aborted. 12754 */ 12755 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 12756 break; 12757 default: 12758 mtx_unlock(&ctl_softc->ctl_lock); 12759 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 12760 return (-EINVAL); 12761 break; /* NOTREACHED */ 12762 } 12763 mtx_unlock(&ctl_softc->ctl_lock); 12764 12765 ctl_wakeup_thread(); 12766 12767 return (CTL_RETVAL_COMPLETE); 12768 } 12769 12770 #ifdef CTL_IO_DELAY 12771 static void 12772 ctl_done_timer_wakeup(void *arg) 12773 { 12774 union ctl_io *io; 12775 12776 io = (union ctl_io *)arg; 12777 ctl_done_lock(io, /*have_lock*/ 0); 12778 } 12779 #endif /* CTL_IO_DELAY */ 12780 12781 void 12782 ctl_done_lock(union ctl_io *io, int have_lock) 12783 { 12784 struct ctl_softc *ctl_softc; 12785 #ifndef CTL_DONE_THREAD 12786 union ctl_io *xio; 12787 #endif /* !CTL_DONE_THREAD */ 12788 12789 ctl_softc = control_softc; 12790 12791 if (have_lock == 0) 12792 mtx_lock(&ctl_softc->ctl_lock); 12793 12794 /* 12795 * Enable this to catch duplicate completion issues. 12796 */ 12797 #if 0 12798 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 12799 printf("%s: type %d msg %d cdb %x iptl: " 12800 "%d:%d:%d:%d tag 0x%04x " 12801 "flag %#x status %x\n", 12802 __func__, 12803 io->io_hdr.io_type, 12804 io->io_hdr.msg_type, 12805 io->scsiio.cdb[0], 12806 io->io_hdr.nexus.initid.id, 12807 io->io_hdr.nexus.targ_port, 12808 io->io_hdr.nexus.targ_target.id, 12809 io->io_hdr.nexus.targ_lun, 12810 (io->io_hdr.io_type == 12811 CTL_IO_TASK) ? 12812 io->taskio.tag_num : 12813 io->scsiio.tag_num, 12814 io->io_hdr.flags, 12815 io->io_hdr.status); 12816 } else 12817 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 12818 #endif 12819 12820 /* 12821 * This is an internal copy of an I/O, and should not go through 12822 * the normal done processing logic. 12823 */ 12824 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 12825 if (have_lock == 0) 12826 mtx_unlock(&ctl_softc->ctl_lock); 12827 return; 12828 } 12829 12830 /* 12831 * We need to send a msg to the serializing shelf to finish the IO 12832 * as well. We don't send a finish message to the other shelf if 12833 * this is a task management command. Task management commands 12834 * aren't serialized in the OOA queue, but rather just executed on 12835 * both shelf controllers for commands that originated on that 12836 * controller. 12837 */ 12838 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 12839 && (io->io_hdr.io_type != CTL_IO_TASK)) { 12840 union ctl_ha_msg msg_io; 12841 12842 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 12843 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 12844 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 12845 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 12846 } 12847 /* continue on to finish IO */ 12848 } 12849 #ifdef CTL_IO_DELAY 12850 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12851 struct ctl_lun *lun; 12852 12853 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12854 12855 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12856 } else { 12857 struct ctl_lun *lun; 12858 12859 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12860 12861 if ((lun != NULL) 12862 && (lun->delay_info.done_delay > 0)) { 12863 struct callout *callout; 12864 12865 callout = (struct callout *)&io->io_hdr.timer_bytes; 12866 callout_init(callout, /*mpsafe*/ 1); 12867 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12868 callout_reset(callout, 12869 lun->delay_info.done_delay * hz, 12870 ctl_done_timer_wakeup, io); 12871 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 12872 lun->delay_info.done_delay = 0; 12873 if (have_lock == 0) 12874 mtx_unlock(&ctl_softc->ctl_lock); 12875 return; 12876 } 12877 } 12878 #endif /* CTL_IO_DELAY */ 12879 12880 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 12881 12882 #ifdef CTL_DONE_THREAD 12883 if (have_lock == 0) 12884 mtx_unlock(&ctl_softc->ctl_lock); 12885 12886 ctl_wakeup_thread(); 12887 #else /* CTL_DONE_THREAD */ 12888 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 12889 xio != NULL; 12890 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 12891 12892 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 12893 12894 ctl_process_done(xio, /*have_lock*/ 1); 12895 } 12896 if (have_lock == 0) 12897 mtx_unlock(&ctl_softc->ctl_lock); 12898 #endif /* CTL_DONE_THREAD */ 12899 } 12900 12901 void 12902 ctl_done(union ctl_io *io) 12903 { 12904 ctl_done_lock(io, /*have_lock*/ 0); 12905 } 12906 12907 int 12908 ctl_isc(struct ctl_scsiio *ctsio) 12909 { 12910 struct ctl_lun *lun; 12911 int retval; 12912 12913 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12914 12915 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 12916 12917 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 12918 12919 retval = lun->backend->data_submit((union ctl_io *)ctsio); 12920 12921 return (retval); 12922 } 12923 12924 12925 static void 12926 ctl_work_thread(void *arg) 12927 { 12928 struct ctl_softc *softc; 12929 union ctl_io *io; 12930 struct ctl_be_lun *be_lun; 12931 int retval; 12932 12933 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 12934 12935 softc = (struct ctl_softc *)arg; 12936 if (softc == NULL) 12937 return; 12938 12939 mtx_lock(&softc->ctl_lock); 12940 for (;;) { 12941 retval = 0; 12942 12943 /* 12944 * We handle the queues in this order: 12945 * - task management 12946 * - ISC 12947 * - done queue (to free up resources, unblock other commands) 12948 * - RtR queue 12949 * - incoming queue 12950 * 12951 * If those queues are empty, we break out of the loop and 12952 * go to sleep. 12953 */ 12954 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 12955 if (io != NULL) { 12956 ctl_run_task_queue(softc); 12957 continue; 12958 } 12959 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 12960 if (io != NULL) { 12961 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 12962 ctl_handle_isc(io); 12963 continue; 12964 } 12965 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 12966 if (io != NULL) { 12967 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 12968 /* clear any blocked commands, call fe_done */ 12969 mtx_unlock(&softc->ctl_lock); 12970 /* 12971 * XXX KDM 12972 * Call this without a lock for now. This will 12973 * depend on whether there is any way the FETD can 12974 * sleep or deadlock if called with the CTL lock 12975 * held. 12976 */ 12977 retval = ctl_process_done(io, /*have_lock*/ 0); 12978 mtx_lock(&softc->ctl_lock); 12979 continue; 12980 } 12981 if (!ctl_pause_rtr) { 12982 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 12983 if (io != NULL) { 12984 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 12985 mtx_unlock(&softc->ctl_lock); 12986 goto execute; 12987 } 12988 } 12989 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 12990 if (io != NULL) { 12991 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 12992 mtx_unlock(&softc->ctl_lock); 12993 ctl_scsiio_precheck(softc, &io->scsiio); 12994 mtx_lock(&softc->ctl_lock); 12995 continue; 12996 } 12997 /* 12998 * We might want to move this to a separate thread, so that 12999 * configuration requests (in this case LUN creations) 13000 * won't impact the I/O path. 13001 */ 13002 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13003 if (be_lun != NULL) { 13004 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13005 mtx_unlock(&softc->ctl_lock); 13006 ctl_create_lun(be_lun); 13007 mtx_lock(&softc->ctl_lock); 13008 continue; 13009 } 13010 13011 /* XXX KDM use the PDROP flag?? */ 13012 /* Sleep until we have something to do. */ 13013 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0); 13014 13015 /* Back to the top of the loop to see what woke us up. */ 13016 continue; 13017 13018 execute: 13019 retval = ctl_scsiio(&io->scsiio); 13020 switch (retval) { 13021 case CTL_RETVAL_COMPLETE: 13022 break; 13023 default: 13024 /* 13025 * Probably need to make sure this doesn't happen. 13026 */ 13027 break; 13028 } 13029 mtx_lock(&softc->ctl_lock); 13030 } 13031 } 13032 13033 void 13034 ctl_wakeup_thread() 13035 { 13036 struct ctl_softc *softc; 13037 13038 softc = control_softc; 13039 13040 wakeup(softc); 13041 } 13042 13043 /* Initialization and failover */ 13044 13045 void 13046 ctl_init_isc_msg(void) 13047 { 13048 printf("CTL: Still calling this thing\n"); 13049 } 13050 13051 /* 13052 * Init component 13053 * Initializes component into configuration defined by bootMode 13054 * (see hasc-sv.c) 13055 * returns hasc_Status: 13056 * OK 13057 * ERROR - fatal error 13058 */ 13059 static ctl_ha_comp_status 13060 ctl_isc_init(struct ctl_ha_component *c) 13061 { 13062 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13063 13064 c->status = ret; 13065 return ret; 13066 } 13067 13068 /* Start component 13069 * Starts component in state requested. If component starts successfully, 13070 * it must set its own state to the requestrd state 13071 * When requested state is HASC_STATE_HA, the component may refine it 13072 * by adding _SLAVE or _MASTER flags. 13073 * Currently allowed state transitions are: 13074 * UNKNOWN->HA - initial startup 13075 * UNKNOWN->SINGLE - initial startup when no parter detected 13076 * HA->SINGLE - failover 13077 * returns ctl_ha_comp_status: 13078 * OK - component successfully started in requested state 13079 * FAILED - could not start the requested state, failover may 13080 * be possible 13081 * ERROR - fatal error detected, no future startup possible 13082 */ 13083 static ctl_ha_comp_status 13084 ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13085 { 13086 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13087 13088 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13089 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13090 ctl_is_single = 0; 13091 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13092 != CTL_HA_STATUS_SUCCESS) { 13093 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13094 ret = CTL_HA_COMP_STATUS_ERROR; 13095 } 13096 } else if (CTL_HA_STATE_IS_HA(c->state) 13097 && CTL_HA_STATE_IS_SINGLE(state)){ 13098 // HA->SINGLE transition 13099 ctl_failover(); 13100 ctl_is_single = 1; 13101 } else { 13102 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13103 c->state, state); 13104 ret = CTL_HA_COMP_STATUS_ERROR; 13105 } 13106 if (CTL_HA_STATE_IS_SINGLE(state)) 13107 ctl_is_single = 1; 13108 13109 c->state = state; 13110 c->status = ret; 13111 return ret; 13112 } 13113 13114 /* 13115 * Quiesce component 13116 * The component must clear any error conditions (set status to OK) and 13117 * prepare itself to another Start call 13118 * returns ctl_ha_comp_status: 13119 * OK 13120 * ERROR 13121 */ 13122 static ctl_ha_comp_status 13123 ctl_isc_quiesce(struct ctl_ha_component *c) 13124 { 13125 int ret = CTL_HA_COMP_STATUS_OK; 13126 13127 ctl_pause_rtr = 1; 13128 c->status = ret; 13129 return ret; 13130 } 13131 13132 struct ctl_ha_component ctl_ha_component_ctlisc = 13133 { 13134 .name = "CTL ISC", 13135 .state = CTL_HA_STATE_UNKNOWN, 13136 .init = ctl_isc_init, 13137 .start = ctl_isc_start, 13138 .quiesce = ctl_isc_quiesce 13139 }; 13140 13141 /* 13142 * vim: ts=8 13143 */ 13144