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