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