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 if (ext_sglist == NULL) { 1524 ctl_set_internal_failure(ctsio, 1525 /*sks_valid*/ 0, 1526 /*retry_count*/ 0); 1527 return (CTL_RETVAL_COMPLETE); 1528 } 1529 ext_sglist_malloced = 1; 1530 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1531 ext_sglen) != 0) { 1532 ctl_set_internal_failure(ctsio, 1533 /*sks_valid*/ 0, 1534 /*retry_count*/ 0); 1535 goto bailout; 1536 } 1537 ext_sg_entries = ctsio->ext_sg_entries; 1538 len_seen = 0; 1539 for (i = 0; i < ext_sg_entries; i++) { 1540 if ((len_seen + ext_sglist[i].len) >= 1541 ctsio->ext_data_filled) { 1542 ext_sg_start = i; 1543 ext_offset = ctsio->ext_data_filled - len_seen; 1544 break; 1545 } 1546 len_seen += ext_sglist[i].len; 1547 } 1548 } else { 1549 ext_sglist = &ext_entry; 1550 ext_sglist->addr = ctsio->ext_data_ptr; 1551 ext_sglist->len = ctsio->ext_data_len; 1552 ext_sg_entries = 1; 1553 ext_sg_start = 0; 1554 ext_offset = ctsio->ext_data_filled; 1555 } 1556 1557 if (ctsio->kern_sg_entries > 0) { 1558 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1559 kern_sg_entries = ctsio->kern_sg_entries; 1560 } else { 1561 kern_sglist = &kern_entry; 1562 kern_sglist->addr = ctsio->kern_data_ptr; 1563 kern_sglist->len = ctsio->kern_data_len; 1564 kern_sg_entries = 1; 1565 } 1566 1567 1568 kern_watermark = 0; 1569 ext_watermark = ext_offset; 1570 len_copied = 0; 1571 for (i = ext_sg_start, j = 0; 1572 i < ext_sg_entries && j < kern_sg_entries;) { 1573 uint8_t *ext_ptr, *kern_ptr; 1574 1575 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1576 kern_sglist[j].len - kern_watermark); 1577 1578 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1579 ext_ptr = ext_ptr + ext_watermark; 1580 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1581 /* 1582 * XXX KDM fix this! 1583 */ 1584 panic("need to implement bus address support"); 1585 #if 0 1586 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1587 #endif 1588 } else 1589 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1590 kern_ptr = kern_ptr + kern_watermark; 1591 1592 kern_watermark += len_to_copy; 1593 ext_watermark += len_to_copy; 1594 1595 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1596 CTL_FLAG_DATA_IN) { 1597 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1598 "bytes to user\n", len_to_copy)); 1599 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1600 "to %p\n", kern_ptr, ext_ptr)); 1601 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1602 ctl_set_internal_failure(ctsio, 1603 /*sks_valid*/ 0, 1604 /*retry_count*/ 0); 1605 goto bailout; 1606 } 1607 } else { 1608 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1609 "bytes from user\n", len_to_copy)); 1610 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1611 "to %p\n", ext_ptr, kern_ptr)); 1612 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1613 ctl_set_internal_failure(ctsio, 1614 /*sks_valid*/ 0, 1615 /*retry_count*/0); 1616 goto bailout; 1617 } 1618 } 1619 1620 len_copied += len_to_copy; 1621 1622 if (ext_sglist[i].len == ext_watermark) { 1623 i++; 1624 ext_watermark = 0; 1625 } 1626 1627 if (kern_sglist[j].len == kern_watermark) { 1628 j++; 1629 kern_watermark = 0; 1630 } 1631 } 1632 1633 ctsio->ext_data_filled += len_copied; 1634 1635 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1636 "kern_sg_entries: %d\n", ext_sg_entries, 1637 kern_sg_entries)); 1638 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1639 "kern_data_len = %d\n", ctsio->ext_data_len, 1640 ctsio->kern_data_len)); 1641 1642 1643 /* XXX KDM set residual?? */ 1644 bailout: 1645 1646 if (ext_sglist_malloced != 0) 1647 free(ext_sglist, M_CTL); 1648 1649 return (CTL_RETVAL_COMPLETE); 1650 } 1651 1652 /* 1653 * Serialize a command that went down the "wrong" side, and so was sent to 1654 * this controller for execution. The logic is a little different than the 1655 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1656 * sent back to the other side, but in the success case, we execute the 1657 * command on this side (XFER mode) or tell the other side to execute it 1658 * (SER_ONLY mode). 1659 */ 1660 static int 1661 ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1662 { 1663 struct ctl_softc *ctl_softc; 1664 union ctl_ha_msg msg_info; 1665 struct ctl_lun *lun; 1666 int retval = 0; 1667 1668 ctl_softc = control_softc; 1669 if (have_lock == 0) 1670 mtx_lock(&ctl_softc->ctl_lock); 1671 1672 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 1673 if (lun==NULL) 1674 { 1675 /* 1676 * Why isn't LUN defined? The other side wouldn't 1677 * send a cmd if the LUN is undefined. 1678 */ 1679 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1680 1681 /* "Logical unit not supported" */ 1682 ctl_set_sense_data(&msg_info.scsi.sense_data, 1683 lun, 1684 /*sense_format*/SSD_TYPE_NONE, 1685 /*current_error*/ 1, 1686 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1687 /*asc*/ 0x25, 1688 /*ascq*/ 0x00, 1689 SSD_ELEM_NONE); 1690 1691 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1692 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1693 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1694 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1695 msg_info.hdr.serializing_sc = NULL; 1696 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1697 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1698 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1699 } 1700 if (have_lock == 0) 1701 mtx_unlock(&ctl_softc->ctl_lock); 1702 return(1); 1703 1704 } 1705 1706 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1707 1708 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1709 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1710 ooa_links))) { 1711 case CTL_ACTION_BLOCK: 1712 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1713 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1714 blocked_links); 1715 break; 1716 case CTL_ACTION_PASS: 1717 case CTL_ACTION_SKIP: 1718 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1719 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1720 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1721 &ctsio->io_hdr, links); 1722 } else { 1723 1724 /* send msg back to other side */ 1725 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1726 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1727 msg_info.hdr.msg_type = CTL_MSG_R2R; 1728 #if 0 1729 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1730 #endif 1731 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1732 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1733 } 1734 } 1735 break; 1736 case CTL_ACTION_OVERLAP: 1737 /* OVERLAPPED COMMANDS ATTEMPTED */ 1738 ctl_set_sense_data(&msg_info.scsi.sense_data, 1739 lun, 1740 /*sense_format*/SSD_TYPE_NONE, 1741 /*current_error*/ 1, 1742 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1743 /*asc*/ 0x4E, 1744 /*ascq*/ 0x00, 1745 SSD_ELEM_NONE); 1746 1747 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1748 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1749 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1750 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1751 msg_info.hdr.serializing_sc = NULL; 1752 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1753 #if 0 1754 printf("BAD JUJU:Major Bummer Overlap\n"); 1755 #endif 1756 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1757 retval = 1; 1758 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1759 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1760 } 1761 break; 1762 case CTL_ACTION_OVERLAP_TAG: 1763 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1764 ctl_set_sense_data(&msg_info.scsi.sense_data, 1765 lun, 1766 /*sense_format*/SSD_TYPE_NONE, 1767 /*current_error*/ 1, 1768 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1769 /*asc*/ 0x4D, 1770 /*ascq*/ ctsio->tag_num & 0xff, 1771 SSD_ELEM_NONE); 1772 1773 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1774 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1775 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1776 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1777 msg_info.hdr.serializing_sc = NULL; 1778 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1779 #if 0 1780 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1781 #endif 1782 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1783 retval = 1; 1784 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1785 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1786 } 1787 break; 1788 case CTL_ACTION_ERROR: 1789 default: 1790 /* "Internal target failure" */ 1791 ctl_set_sense_data(&msg_info.scsi.sense_data, 1792 lun, 1793 /*sense_format*/SSD_TYPE_NONE, 1794 /*current_error*/ 1, 1795 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1796 /*asc*/ 0x44, 1797 /*ascq*/ 0x00, 1798 SSD_ELEM_NONE); 1799 1800 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1801 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1802 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1803 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1804 msg_info.hdr.serializing_sc = NULL; 1805 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1806 #if 0 1807 printf("BAD JUJU:Major Bummer HW Error\n"); 1808 #endif 1809 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1810 retval = 1; 1811 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1812 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1813 } 1814 break; 1815 } 1816 if (have_lock == 0) 1817 mtx_unlock(&ctl_softc->ctl_lock); 1818 return (retval); 1819 } 1820 1821 static int 1822 ctl_ioctl_submit_wait(union ctl_io *io) 1823 { 1824 struct ctl_fe_ioctl_params params; 1825 ctl_fe_ioctl_state last_state; 1826 int done, retval; 1827 1828 retval = 0; 1829 1830 bzero(¶ms, sizeof(params)); 1831 1832 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1833 cv_init(¶ms.sem, "ctlioccv"); 1834 params.state = CTL_IOCTL_INPROG; 1835 last_state = params.state; 1836 1837 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1838 1839 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1840 1841 /* This shouldn't happen */ 1842 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1843 return (retval); 1844 1845 done = 0; 1846 1847 do { 1848 mtx_lock(¶ms.ioctl_mtx); 1849 /* 1850 * Check the state here, and don't sleep if the state has 1851 * already changed (i.e. wakeup has already occured, but we 1852 * weren't waiting yet). 1853 */ 1854 if (params.state == last_state) { 1855 /* XXX KDM cv_wait_sig instead? */ 1856 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1857 } 1858 last_state = params.state; 1859 1860 switch (params.state) { 1861 case CTL_IOCTL_INPROG: 1862 /* Why did we wake up? */ 1863 /* XXX KDM error here? */ 1864 mtx_unlock(¶ms.ioctl_mtx); 1865 break; 1866 case CTL_IOCTL_DATAMOVE: 1867 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1868 1869 /* 1870 * change last_state back to INPROG to avoid 1871 * deadlock on subsequent data moves. 1872 */ 1873 params.state = last_state = CTL_IOCTL_INPROG; 1874 1875 mtx_unlock(¶ms.ioctl_mtx); 1876 ctl_ioctl_do_datamove(&io->scsiio); 1877 /* 1878 * Note that in some cases, most notably writes, 1879 * this will queue the I/O and call us back later. 1880 * In other cases, generally reads, this routine 1881 * will immediately call back and wake us up, 1882 * probably using our own context. 1883 */ 1884 io->scsiio.be_move_done(io); 1885 break; 1886 case CTL_IOCTL_DONE: 1887 mtx_unlock(¶ms.ioctl_mtx); 1888 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1889 done = 1; 1890 break; 1891 default: 1892 mtx_unlock(¶ms.ioctl_mtx); 1893 /* XXX KDM error here? */ 1894 break; 1895 } 1896 } while (done == 0); 1897 1898 mtx_destroy(¶ms.ioctl_mtx); 1899 cv_destroy(¶ms.sem); 1900 1901 return (CTL_RETVAL_COMPLETE); 1902 } 1903 1904 static void 1905 ctl_ioctl_datamove(union ctl_io *io) 1906 { 1907 struct ctl_fe_ioctl_params *params; 1908 1909 params = (struct ctl_fe_ioctl_params *) 1910 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1911 1912 mtx_lock(¶ms->ioctl_mtx); 1913 params->state = CTL_IOCTL_DATAMOVE; 1914 cv_broadcast(¶ms->sem); 1915 mtx_unlock(¶ms->ioctl_mtx); 1916 } 1917 1918 static void 1919 ctl_ioctl_done(union ctl_io *io) 1920 { 1921 struct ctl_fe_ioctl_params *params; 1922 1923 params = (struct ctl_fe_ioctl_params *) 1924 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1925 1926 mtx_lock(¶ms->ioctl_mtx); 1927 params->state = CTL_IOCTL_DONE; 1928 cv_broadcast(¶ms->sem); 1929 mtx_unlock(¶ms->ioctl_mtx); 1930 } 1931 1932 static void 1933 ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1934 { 1935 struct ctl_fe_ioctl_startstop_info *sd_info; 1936 1937 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1938 1939 sd_info->hs_info.status = metatask->status; 1940 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1941 sd_info->hs_info.luns_complete = 1942 metatask->taskinfo.startstop.luns_complete; 1943 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1944 1945 cv_broadcast(&sd_info->sem); 1946 } 1947 1948 static void 1949 ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1950 { 1951 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1952 1953 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1954 1955 mtx_lock(fe_bbr_info->lock); 1956 fe_bbr_info->bbr_info->status = metatask->status; 1957 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1958 fe_bbr_info->wakeup_done = 1; 1959 mtx_unlock(fe_bbr_info->lock); 1960 1961 cv_broadcast(&fe_bbr_info->sem); 1962 } 1963 1964 /* 1965 * Must be called with the ctl_lock held. 1966 * Returns 0 for success, errno for failure. 1967 */ 1968 static int 1969 ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1970 struct ctl_ooa *ooa_hdr) 1971 { 1972 union ctl_io *io; 1973 int retval; 1974 1975 retval = 0; 1976 1977 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1978 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1979 ooa_links)) { 1980 struct ctl_ooa_entry *cur_entry, entry; 1981 1982 /* 1983 * If we've got more than we can fit, just count the 1984 * remaining entries. 1985 */ 1986 if (*cur_fill_num >= ooa_hdr->alloc_num) 1987 continue; 1988 1989 cur_entry = &ooa_hdr->entries[*cur_fill_num]; 1990 1991 bzero(&entry, sizeof(entry)); 1992 1993 entry.tag_num = io->scsiio.tag_num; 1994 entry.lun_num = lun->lun; 1995 #ifdef CTL_TIME_IO 1996 entry.start_bt = io->io_hdr.start_bt; 1997 #endif 1998 bcopy(io->scsiio.cdb, entry.cdb, io->scsiio.cdb_len); 1999 entry.cdb_len = io->scsiio.cdb_len; 2000 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2001 entry.cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2002 2003 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2004 entry.cmd_flags |= CTL_OOACMD_FLAG_DMA; 2005 2006 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2007 entry.cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2008 2009 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2010 entry.cmd_flags |= CTL_OOACMD_FLAG_RTR; 2011 2012 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2013 entry.cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2014 2015 retval = copyout(&entry, cur_entry, sizeof(entry)); 2016 2017 if (retval != 0) 2018 break; 2019 } 2020 2021 return (retval); 2022 } 2023 2024 static void * 2025 ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2026 size_t error_str_len) 2027 { 2028 void *kptr; 2029 2030 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2031 if (kptr == NULL) { 2032 snprintf(error_str, error_str_len, "Cannot allocate %d bytes", 2033 len); 2034 return (NULL); 2035 } 2036 2037 if (copyin(user_addr, kptr, len) != 0) { 2038 snprintf(error_str, error_str_len, "Error copying %d bytes " 2039 "from user address %p to kernel address %p", len, 2040 user_addr, kptr); 2041 free(kptr, M_CTL); 2042 return (NULL); 2043 } 2044 2045 return (kptr); 2046 } 2047 2048 static void 2049 ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2050 { 2051 int i; 2052 2053 if (be_args == NULL) 2054 return; 2055 2056 for (i = 0; i < num_be_args; i++) { 2057 free(be_args[i].kname, M_CTL); 2058 free(be_args[i].kvalue, M_CTL); 2059 } 2060 2061 free(be_args, M_CTL); 2062 } 2063 2064 static struct ctl_be_arg * 2065 ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2066 char *error_str, size_t error_str_len) 2067 { 2068 struct ctl_be_arg *args; 2069 int i; 2070 2071 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2072 error_str, error_str_len); 2073 2074 if (args == NULL) 2075 goto bailout; 2076 2077 for (i = 0; i < num_be_args; i++) { 2078 uint8_t *tmpptr; 2079 2080 args[i].kname = ctl_copyin_alloc(args[i].name, 2081 args[i].namelen, error_str, error_str_len); 2082 if (args[i].kname == NULL) 2083 goto bailout; 2084 2085 if (args[i].kname[args[i].namelen - 1] != '\0') { 2086 snprintf(error_str, error_str_len, "Argument %d " 2087 "name is not NUL-terminated", i); 2088 goto bailout; 2089 } 2090 2091 args[i].kvalue = NULL; 2092 2093 tmpptr = ctl_copyin_alloc(args[i].value, 2094 args[i].vallen, error_str, error_str_len); 2095 if (tmpptr == NULL) 2096 goto bailout; 2097 2098 args[i].kvalue = tmpptr; 2099 2100 if ((args[i].flags & CTL_BEARG_ASCII) 2101 && (tmpptr[args[i].vallen - 1] != '\0')) { 2102 snprintf(error_str, error_str_len, "Argument %d " 2103 "value is not NUL-terminated", i); 2104 goto bailout; 2105 } 2106 } 2107 2108 return (args); 2109 bailout: 2110 2111 ctl_free_args(num_be_args, args); 2112 2113 return (NULL); 2114 } 2115 2116 /* 2117 * Escape characters that are illegal or not recommended in XML. 2118 */ 2119 int 2120 ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2121 { 2122 int retval; 2123 2124 retval = 0; 2125 2126 for (; *str; str++) { 2127 switch (*str) { 2128 case '&': 2129 retval = sbuf_printf(sb, "&"); 2130 break; 2131 case '>': 2132 retval = sbuf_printf(sb, ">"); 2133 break; 2134 case '<': 2135 retval = sbuf_printf(sb, "<"); 2136 break; 2137 default: 2138 retval = sbuf_putc(sb, *str); 2139 break; 2140 } 2141 2142 if (retval != 0) 2143 break; 2144 2145 } 2146 2147 return (retval); 2148 } 2149 2150 static int 2151 ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2152 struct thread *td) 2153 { 2154 struct ctl_softc *softc; 2155 int retval; 2156 2157 softc = control_softc; 2158 2159 retval = 0; 2160 2161 switch (cmd) { 2162 case CTL_IO: { 2163 union ctl_io *io; 2164 void *pool_tmp; 2165 2166 /* 2167 * If we haven't been "enabled", don't allow any SCSI I/O 2168 * to this FETD. 2169 */ 2170 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2171 retval = -EPERM; 2172 break; 2173 } 2174 2175 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2176 if (io == NULL) { 2177 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2178 retval = -ENOSPC; 2179 break; 2180 } 2181 2182 /* 2183 * Need to save the pool reference so it doesn't get 2184 * spammed by the user's ctl_io. 2185 */ 2186 pool_tmp = io->io_hdr.pool; 2187 2188 memcpy(io, (void *)addr, sizeof(*io)); 2189 2190 io->io_hdr.pool = pool_tmp; 2191 /* 2192 * No status yet, so make sure the status is set properly. 2193 */ 2194 io->io_hdr.status = CTL_STATUS_NONE; 2195 2196 /* 2197 * The user sets the initiator ID, target and LUN IDs. 2198 */ 2199 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2200 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2201 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2202 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2203 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2204 2205 retval = ctl_ioctl_submit_wait(io); 2206 2207 if (retval != 0) { 2208 ctl_free_io(io); 2209 break; 2210 } 2211 2212 memcpy((void *)addr, io, sizeof(*io)); 2213 2214 /* return this to our pool */ 2215 ctl_free_io(io); 2216 2217 break; 2218 } 2219 case CTL_ENABLE_PORT: 2220 case CTL_DISABLE_PORT: 2221 case CTL_SET_PORT_WWNS: { 2222 struct ctl_frontend *fe; 2223 struct ctl_port_entry *entry; 2224 2225 entry = (struct ctl_port_entry *)addr; 2226 2227 mtx_lock(&softc->ctl_lock); 2228 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2229 int action, done; 2230 2231 action = 0; 2232 done = 0; 2233 2234 if ((entry->port_type == CTL_PORT_NONE) 2235 && (entry->targ_port == fe->targ_port)) { 2236 /* 2237 * If the user only wants to enable or 2238 * disable or set WWNs on a specific port, 2239 * do the operation and we're done. 2240 */ 2241 action = 1; 2242 done = 1; 2243 } else if (entry->port_type & fe->port_type) { 2244 /* 2245 * Compare the user's type mask with the 2246 * particular frontend type to see if we 2247 * have a match. 2248 */ 2249 action = 1; 2250 done = 0; 2251 2252 /* 2253 * Make sure the user isn't trying to set 2254 * WWNs on multiple ports at the same time. 2255 */ 2256 if (cmd == CTL_SET_PORT_WWNS) { 2257 printf("%s: Can't set WWNs on " 2258 "multiple ports\n", __func__); 2259 retval = EINVAL; 2260 break; 2261 } 2262 } 2263 if (action != 0) { 2264 /* 2265 * XXX KDM we have to drop the lock here, 2266 * because the online/offline operations 2267 * can potentially block. We need to 2268 * reference count the frontends so they 2269 * can't go away, 2270 */ 2271 mtx_unlock(&softc->ctl_lock); 2272 2273 if (cmd == CTL_ENABLE_PORT) 2274 ctl_frontend_online(fe); 2275 else if (cmd == CTL_DISABLE_PORT) 2276 ctl_frontend_offline(fe); 2277 2278 mtx_lock(&softc->ctl_lock); 2279 2280 if (cmd == CTL_SET_PORT_WWNS) 2281 ctl_frontend_set_wwns(fe, 2282 (entry->flags & CTL_PORT_WWNN_VALID) ? 2283 1 : 0, entry->wwnn, 2284 (entry->flags & CTL_PORT_WWPN_VALID) ? 2285 1 : 0, entry->wwpn); 2286 } 2287 if (done != 0) 2288 break; 2289 } 2290 mtx_unlock(&softc->ctl_lock); 2291 break; 2292 } 2293 case CTL_GET_PORT_LIST: { 2294 struct ctl_frontend *fe; 2295 struct ctl_port_list *list; 2296 int i; 2297 2298 list = (struct ctl_port_list *)addr; 2299 2300 if (list->alloc_len != (list->alloc_num * 2301 sizeof(struct ctl_port_entry))) { 2302 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2303 "alloc_num %u * sizeof(struct ctl_port_entry) " 2304 "%zu\n", __func__, list->alloc_len, 2305 list->alloc_num, sizeof(struct ctl_port_entry)); 2306 retval = EINVAL; 2307 break; 2308 } 2309 list->fill_len = 0; 2310 list->fill_num = 0; 2311 list->dropped_num = 0; 2312 i = 0; 2313 mtx_lock(&softc->ctl_lock); 2314 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2315 struct ctl_port_entry entry, *list_entry; 2316 2317 if (list->fill_num >= list->alloc_num) { 2318 list->dropped_num++; 2319 continue; 2320 } 2321 2322 entry.port_type = fe->port_type; 2323 strlcpy(entry.port_name, fe->port_name, 2324 sizeof(entry.port_name)); 2325 entry.targ_port = fe->targ_port; 2326 entry.physical_port = fe->physical_port; 2327 entry.virtual_port = fe->virtual_port; 2328 entry.wwnn = fe->wwnn; 2329 entry.wwpn = fe->wwpn; 2330 if (fe->status & CTL_PORT_STATUS_ONLINE) 2331 entry.online = 1; 2332 else 2333 entry.online = 0; 2334 2335 list_entry = &list->entries[i]; 2336 2337 retval = copyout(&entry, list_entry, sizeof(entry)); 2338 if (retval != 0) { 2339 printf("%s: CTL_GET_PORT_LIST: copyout " 2340 "returned %d\n", __func__, retval); 2341 break; 2342 } 2343 i++; 2344 list->fill_num++; 2345 list->fill_len += sizeof(entry); 2346 } 2347 mtx_unlock(&softc->ctl_lock); 2348 2349 /* 2350 * If this is non-zero, we had a copyout fault, so there's 2351 * probably no point in attempting to set the status inside 2352 * the structure. 2353 */ 2354 if (retval != 0) 2355 break; 2356 2357 if (list->dropped_num > 0) 2358 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2359 else 2360 list->status = CTL_PORT_LIST_OK; 2361 break; 2362 } 2363 case CTL_DUMP_OOA: { 2364 struct ctl_lun *lun; 2365 union ctl_io *io; 2366 char printbuf[128]; 2367 struct sbuf sb; 2368 2369 mtx_lock(&softc->ctl_lock); 2370 printf("Dumping OOA queues:\n"); 2371 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2372 for (io = (union ctl_io *)TAILQ_FIRST( 2373 &lun->ooa_queue); io != NULL; 2374 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2375 ooa_links)) { 2376 sbuf_new(&sb, printbuf, sizeof(printbuf), 2377 SBUF_FIXEDLEN); 2378 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2379 (intmax_t)lun->lun, 2380 io->scsiio.tag_num, 2381 (io->io_hdr.flags & 2382 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2383 (io->io_hdr.flags & 2384 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2385 (io->io_hdr.flags & 2386 CTL_FLAG_ABORT) ? " ABORT" : "", 2387 (io->io_hdr.flags & 2388 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2389 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2390 sbuf_finish(&sb); 2391 printf("%s\n", sbuf_data(&sb)); 2392 } 2393 } 2394 printf("OOA queues dump done\n"); 2395 mtx_unlock(&softc->ctl_lock); 2396 break; 2397 } 2398 case CTL_GET_OOA: { 2399 struct ctl_lun *lun; 2400 struct ctl_ooa *ooa_hdr; 2401 uint32_t cur_fill_num; 2402 2403 ooa_hdr = (struct ctl_ooa *)addr; 2404 2405 if ((ooa_hdr->alloc_len == 0) 2406 || (ooa_hdr->alloc_num == 0)) { 2407 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2408 "must be non-zero\n", __func__, 2409 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2410 retval = EINVAL; 2411 break; 2412 } 2413 2414 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2415 sizeof(struct ctl_ooa_entry))) { 2416 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2417 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2418 __func__, ooa_hdr->alloc_len, 2419 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2420 retval = EINVAL; 2421 break; 2422 } 2423 2424 mtx_lock(&softc->ctl_lock); 2425 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2426 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2427 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2428 mtx_unlock(&softc->ctl_lock); 2429 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2430 __func__, (uintmax_t)ooa_hdr->lun_num); 2431 retval = EINVAL; 2432 break; 2433 } 2434 2435 cur_fill_num = 0; 2436 2437 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2438 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2439 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2440 ooa_hdr); 2441 if (retval != 0) 2442 break; 2443 } 2444 if (retval != 0) { 2445 mtx_unlock(&softc->ctl_lock); 2446 break; 2447 } 2448 } else { 2449 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2450 2451 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr); 2452 } 2453 mtx_unlock(&softc->ctl_lock); 2454 2455 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2456 ooa_hdr->fill_len = ooa_hdr->fill_num * 2457 sizeof(struct ctl_ooa_entry); 2458 2459 getbintime(&ooa_hdr->cur_bt); 2460 2461 if (cur_fill_num > ooa_hdr->alloc_num) { 2462 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2463 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2464 } else { 2465 ooa_hdr->dropped_num = 0; 2466 ooa_hdr->status = CTL_OOA_OK; 2467 } 2468 break; 2469 } 2470 case CTL_CHECK_OOA: { 2471 union ctl_io *io; 2472 struct ctl_lun *lun; 2473 struct ctl_ooa_info *ooa_info; 2474 2475 2476 ooa_info = (struct ctl_ooa_info *)addr; 2477 2478 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2479 ooa_info->status = CTL_OOA_INVALID_LUN; 2480 break; 2481 } 2482 mtx_lock(&softc->ctl_lock); 2483 lun = softc->ctl_luns[ooa_info->lun_id]; 2484 if (lun == NULL) { 2485 mtx_unlock(&softc->ctl_lock); 2486 ooa_info->status = CTL_OOA_INVALID_LUN; 2487 break; 2488 } 2489 2490 ooa_info->num_entries = 0; 2491 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2492 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2493 &io->io_hdr, ooa_links)) { 2494 ooa_info->num_entries++; 2495 } 2496 2497 mtx_unlock(&softc->ctl_lock); 2498 ooa_info->status = CTL_OOA_SUCCESS; 2499 2500 break; 2501 } 2502 case CTL_HARD_START: 2503 case CTL_HARD_STOP: { 2504 struct ctl_fe_ioctl_startstop_info ss_info; 2505 struct cfi_metatask *metatask; 2506 struct mtx hs_mtx; 2507 2508 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2509 2510 cv_init(&ss_info.sem, "hard start/stop cv" ); 2511 2512 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2513 if (metatask == NULL) { 2514 retval = ENOMEM; 2515 mtx_destroy(&hs_mtx); 2516 break; 2517 } 2518 2519 if (cmd == CTL_HARD_START) 2520 metatask->tasktype = CFI_TASK_STARTUP; 2521 else 2522 metatask->tasktype = CFI_TASK_SHUTDOWN; 2523 2524 metatask->callback = ctl_ioctl_hard_startstop_callback; 2525 metatask->callback_arg = &ss_info; 2526 2527 cfi_action(metatask); 2528 2529 /* Wait for the callback */ 2530 mtx_lock(&hs_mtx); 2531 cv_wait_sig(&ss_info.sem, &hs_mtx); 2532 mtx_unlock(&hs_mtx); 2533 2534 /* 2535 * All information has been copied from the metatask by the 2536 * time cv_broadcast() is called, so we free the metatask here. 2537 */ 2538 cfi_free_metatask(metatask); 2539 2540 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2541 2542 mtx_destroy(&hs_mtx); 2543 break; 2544 } 2545 case CTL_BBRREAD: { 2546 struct ctl_bbrread_info *bbr_info; 2547 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2548 struct mtx bbr_mtx; 2549 struct cfi_metatask *metatask; 2550 2551 bbr_info = (struct ctl_bbrread_info *)addr; 2552 2553 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2554 2555 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2556 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2557 2558 fe_bbr_info.bbr_info = bbr_info; 2559 fe_bbr_info.lock = &bbr_mtx; 2560 2561 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2562 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2563 2564 if (metatask == NULL) { 2565 mtx_destroy(&bbr_mtx); 2566 cv_destroy(&fe_bbr_info.sem); 2567 retval = ENOMEM; 2568 break; 2569 } 2570 metatask->tasktype = CFI_TASK_BBRREAD; 2571 metatask->callback = ctl_ioctl_bbrread_callback; 2572 metatask->callback_arg = &fe_bbr_info; 2573 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2574 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2575 metatask->taskinfo.bbrread.len = bbr_info->len; 2576 2577 cfi_action(metatask); 2578 2579 mtx_lock(&bbr_mtx); 2580 while (fe_bbr_info.wakeup_done == 0) 2581 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2582 mtx_unlock(&bbr_mtx); 2583 2584 bbr_info->status = metatask->status; 2585 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2586 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2587 memcpy(&bbr_info->sense_data, 2588 &metatask->taskinfo.bbrread.sense_data, 2589 ctl_min(sizeof(bbr_info->sense_data), 2590 sizeof(metatask->taskinfo.bbrread.sense_data))); 2591 2592 cfi_free_metatask(metatask); 2593 2594 mtx_destroy(&bbr_mtx); 2595 cv_destroy(&fe_bbr_info.sem); 2596 2597 break; 2598 } 2599 case CTL_DELAY_IO: { 2600 struct ctl_io_delay_info *delay_info; 2601 #ifdef CTL_IO_DELAY 2602 struct ctl_lun *lun; 2603 #endif /* CTL_IO_DELAY */ 2604 2605 delay_info = (struct ctl_io_delay_info *)addr; 2606 2607 #ifdef CTL_IO_DELAY 2608 mtx_lock(&softc->ctl_lock); 2609 2610 if ((delay_info->lun_id > CTL_MAX_LUNS) 2611 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2612 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2613 } else { 2614 lun = softc->ctl_luns[delay_info->lun_id]; 2615 2616 delay_info->status = CTL_DELAY_STATUS_OK; 2617 2618 switch (delay_info->delay_type) { 2619 case CTL_DELAY_TYPE_CONT: 2620 break; 2621 case CTL_DELAY_TYPE_ONESHOT: 2622 break; 2623 default: 2624 delay_info->status = 2625 CTL_DELAY_STATUS_INVALID_TYPE; 2626 break; 2627 } 2628 2629 switch (delay_info->delay_loc) { 2630 case CTL_DELAY_LOC_DATAMOVE: 2631 lun->delay_info.datamove_type = 2632 delay_info->delay_type; 2633 lun->delay_info.datamove_delay = 2634 delay_info->delay_secs; 2635 break; 2636 case CTL_DELAY_LOC_DONE: 2637 lun->delay_info.done_type = 2638 delay_info->delay_type; 2639 lun->delay_info.done_delay = 2640 delay_info->delay_secs; 2641 break; 2642 default: 2643 delay_info->status = 2644 CTL_DELAY_STATUS_INVALID_LOC; 2645 break; 2646 } 2647 } 2648 2649 mtx_unlock(&softc->ctl_lock); 2650 #else 2651 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2652 #endif /* CTL_IO_DELAY */ 2653 break; 2654 } 2655 case CTL_REALSYNC_SET: { 2656 int *syncstate; 2657 2658 syncstate = (int *)addr; 2659 2660 mtx_lock(&softc->ctl_lock); 2661 switch (*syncstate) { 2662 case 0: 2663 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2664 break; 2665 case 1: 2666 softc->flags |= CTL_FLAG_REAL_SYNC; 2667 break; 2668 default: 2669 retval = -EINVAL; 2670 break; 2671 } 2672 mtx_unlock(&softc->ctl_lock); 2673 break; 2674 } 2675 case CTL_REALSYNC_GET: { 2676 int *syncstate; 2677 2678 syncstate = (int*)addr; 2679 2680 mtx_lock(&softc->ctl_lock); 2681 if (softc->flags & CTL_FLAG_REAL_SYNC) 2682 *syncstate = 1; 2683 else 2684 *syncstate = 0; 2685 mtx_unlock(&softc->ctl_lock); 2686 2687 break; 2688 } 2689 case CTL_SETSYNC: 2690 case CTL_GETSYNC: { 2691 struct ctl_sync_info *sync_info; 2692 struct ctl_lun *lun; 2693 2694 sync_info = (struct ctl_sync_info *)addr; 2695 2696 mtx_lock(&softc->ctl_lock); 2697 lun = softc->ctl_luns[sync_info->lun_id]; 2698 if (lun == NULL) { 2699 mtx_unlock(&softc->ctl_lock); 2700 sync_info->status = CTL_GS_SYNC_NO_LUN; 2701 } 2702 /* 2703 * Get or set the sync interval. We're not bounds checking 2704 * in the set case, hopefully the user won't do something 2705 * silly. 2706 */ 2707 if (cmd == CTL_GETSYNC) 2708 sync_info->sync_interval = lun->sync_interval; 2709 else 2710 lun->sync_interval = sync_info->sync_interval; 2711 2712 mtx_unlock(&softc->ctl_lock); 2713 2714 sync_info->status = CTL_GS_SYNC_OK; 2715 2716 break; 2717 } 2718 case CTL_GETSTATS: { 2719 struct ctl_stats *stats; 2720 struct ctl_lun *lun; 2721 int i; 2722 2723 stats = (struct ctl_stats *)addr; 2724 2725 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2726 stats->alloc_len) { 2727 stats->status = CTL_SS_NEED_MORE_SPACE; 2728 stats->num_luns = softc->num_luns; 2729 break; 2730 } 2731 /* 2732 * XXX KDM no locking here. If the LUN list changes, 2733 * things can blow up. 2734 */ 2735 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2736 i++, lun = STAILQ_NEXT(lun, links)) { 2737 retval = copyout(&lun->stats, &stats->lun_stats[i], 2738 sizeof(lun->stats)); 2739 if (retval != 0) 2740 break; 2741 } 2742 stats->num_luns = softc->num_luns; 2743 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2744 softc->num_luns; 2745 stats->status = CTL_SS_OK; 2746 #ifdef CTL_TIME_IO 2747 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2748 #else 2749 stats->flags = CTL_STATS_FLAG_NONE; 2750 #endif 2751 getnanouptime(&stats->timestamp); 2752 break; 2753 } 2754 case CTL_ERROR_INJECT: { 2755 struct ctl_error_desc *err_desc, *new_err_desc; 2756 struct ctl_lun *lun; 2757 2758 err_desc = (struct ctl_error_desc *)addr; 2759 2760 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2761 M_WAITOK | M_ZERO); 2762 if (new_err_desc == NULL) { 2763 printf("%s: CTL_ERROR_INJECT: error allocating %zu " 2764 "bytes\n", __func__, sizeof(*new_err_desc)); 2765 retval = ENOMEM; 2766 break; 2767 } 2768 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2769 2770 mtx_lock(&softc->ctl_lock); 2771 lun = softc->ctl_luns[err_desc->lun_id]; 2772 if (lun == NULL) { 2773 mtx_unlock(&softc->ctl_lock); 2774 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2775 __func__, (uintmax_t)err_desc->lun_id); 2776 retval = EINVAL; 2777 break; 2778 } 2779 2780 /* 2781 * We could do some checking here to verify the validity 2782 * of the request, but given the complexity of error 2783 * injection requests, the checking logic would be fairly 2784 * complex. 2785 * 2786 * For now, if the request is invalid, it just won't get 2787 * executed and might get deleted. 2788 */ 2789 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2790 2791 /* 2792 * XXX KDM check to make sure the serial number is unique, 2793 * in case we somehow manage to wrap. That shouldn't 2794 * happen for a very long time, but it's the right thing to 2795 * do. 2796 */ 2797 new_err_desc->serial = lun->error_serial; 2798 err_desc->serial = lun->error_serial; 2799 lun->error_serial++; 2800 2801 mtx_unlock(&softc->ctl_lock); 2802 break; 2803 } 2804 case CTL_ERROR_INJECT_DELETE: { 2805 struct ctl_error_desc *delete_desc, *desc, *desc2; 2806 struct ctl_lun *lun; 2807 int delete_done; 2808 2809 delete_desc = (struct ctl_error_desc *)addr; 2810 delete_done = 0; 2811 2812 mtx_lock(&softc->ctl_lock); 2813 lun = softc->ctl_luns[delete_desc->lun_id]; 2814 if (lun == NULL) { 2815 mtx_unlock(&softc->ctl_lock); 2816 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2817 __func__, (uintmax_t)delete_desc->lun_id); 2818 retval = EINVAL; 2819 break; 2820 } 2821 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2822 if (desc->serial != delete_desc->serial) 2823 continue; 2824 2825 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2826 links); 2827 free(desc, M_CTL); 2828 delete_done = 1; 2829 } 2830 mtx_unlock(&softc->ctl_lock); 2831 if (delete_done == 0) { 2832 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2833 "error serial %ju on LUN %u\n", __func__, 2834 delete_desc->serial, delete_desc->lun_id); 2835 retval = EINVAL; 2836 break; 2837 } 2838 break; 2839 } 2840 case CTL_DUMP_STRUCTS: { 2841 int i, j, k; 2842 struct ctl_frontend *fe; 2843 2844 printf("CTL IID to WWPN map start:\n"); 2845 for (i = 0; i < CTL_MAX_PORTS; i++) { 2846 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2847 if (softc->wwpn_iid[i][j].in_use == 0) 2848 continue; 2849 2850 printf("port %d iid %u WWPN %#jx\n", 2851 softc->wwpn_iid[i][j].port, 2852 softc->wwpn_iid[i][j].iid, 2853 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2854 } 2855 } 2856 printf("CTL IID to WWPN map end\n"); 2857 printf("CTL Persistent Reservation information start:\n"); 2858 for (i = 0; i < CTL_MAX_LUNS; i++) { 2859 struct ctl_lun *lun; 2860 2861 lun = softc->ctl_luns[i]; 2862 2863 if ((lun == NULL) 2864 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2865 continue; 2866 2867 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2868 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2869 if (lun->per_res[j+k].registered == 0) 2870 continue; 2871 printf("LUN %d port %d iid %d key " 2872 "%#jx\n", i, j, k, 2873 (uintmax_t)scsi_8btou64( 2874 lun->per_res[j+k].res_key.key)); 2875 } 2876 } 2877 } 2878 printf("CTL Persistent Reservation information end\n"); 2879 printf("CTL Frontends:\n"); 2880 /* 2881 * XXX KDM calling this without a lock. We'd likely want 2882 * to drop the lock before calling the frontend's dump 2883 * routine anyway. 2884 */ 2885 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2886 printf("Frontend %s Type %u pport %d vport %d WWNN " 2887 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2888 fe->physical_port, fe->virtual_port, 2889 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2890 2891 /* 2892 * Frontends are not required to support the dump 2893 * routine. 2894 */ 2895 if (fe->fe_dump == NULL) 2896 continue; 2897 2898 fe->fe_dump(); 2899 } 2900 printf("CTL Frontend information end\n"); 2901 break; 2902 } 2903 case CTL_LUN_REQ: { 2904 struct ctl_lun_req *lun_req; 2905 struct ctl_backend_driver *backend; 2906 2907 lun_req = (struct ctl_lun_req *)addr; 2908 2909 backend = ctl_backend_find(lun_req->backend); 2910 if (backend == NULL) { 2911 lun_req->status = CTL_LUN_ERROR; 2912 snprintf(lun_req->error_str, 2913 sizeof(lun_req->error_str), 2914 "Backend \"%s\" not found.", 2915 lun_req->backend); 2916 break; 2917 } 2918 if (lun_req->num_be_args > 0) { 2919 lun_req->kern_be_args = ctl_copyin_args( 2920 lun_req->num_be_args, 2921 lun_req->be_args, 2922 lun_req->error_str, 2923 sizeof(lun_req->error_str)); 2924 if (lun_req->kern_be_args == NULL) { 2925 lun_req->status = CTL_LUN_ERROR; 2926 break; 2927 } 2928 } 2929 2930 retval = backend->ioctl(dev, cmd, addr, flag, td); 2931 2932 if (lun_req->num_be_args > 0) { 2933 ctl_free_args(lun_req->num_be_args, 2934 lun_req->kern_be_args); 2935 } 2936 break; 2937 } 2938 case CTL_LUN_LIST: { 2939 struct sbuf *sb; 2940 struct ctl_lun *lun; 2941 struct ctl_lun_list *list; 2942 2943 list = (struct ctl_lun_list *)addr; 2944 2945 /* 2946 * Allocate a fixed length sbuf here, based on the length 2947 * of the user's buffer. We could allocate an auto-extending 2948 * buffer, and then tell the user how much larger our 2949 * amount of data is than his buffer, but that presents 2950 * some problems: 2951 * 2952 * 1. The sbuf(9) routines use a blocking malloc, and so 2953 * we can't hold a lock while calling them with an 2954 * auto-extending buffer. 2955 * 2956 * 2. There is not currently a LUN reference counting 2957 * mechanism, outside of outstanding transactions on 2958 * the LUN's OOA queue. So a LUN could go away on us 2959 * while we're getting the LUN number, backend-specific 2960 * information, etc. Thus, given the way things 2961 * currently work, we need to hold the CTL lock while 2962 * grabbing LUN information. 2963 * 2964 * So, from the user's standpoint, the best thing to do is 2965 * allocate what he thinks is a reasonable buffer length, 2966 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2967 * double the buffer length and try again. (And repeat 2968 * that until he succeeds.) 2969 */ 2970 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 2971 if (sb == NULL) { 2972 list->status = CTL_LUN_LIST_ERROR; 2973 snprintf(list->error_str, sizeof(list->error_str), 2974 "Unable to allocate %d bytes for LUN list", 2975 list->alloc_len); 2976 break; 2977 } 2978 2979 sbuf_printf(sb, "<ctllunlist>\n"); 2980 2981 mtx_lock(&softc->ctl_lock); 2982 2983 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2984 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 2985 (uintmax_t)lun->lun); 2986 2987 /* 2988 * Bail out as soon as we see that we've overfilled 2989 * the buffer. 2990 */ 2991 if (retval != 0) 2992 break; 2993 2994 retval = sbuf_printf(sb, "<backend_type>%s" 2995 "</backend_type>\n", 2996 (lun->backend == NULL) ? "none" : 2997 lun->backend->name); 2998 2999 if (retval != 0) 3000 break; 3001 3002 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3003 lun->be_lun->lun_type); 3004 3005 if (retval != 0) 3006 break; 3007 3008 if (lun->backend == NULL) { 3009 retval = sbuf_printf(sb, "</lun>\n"); 3010 if (retval != 0) 3011 break; 3012 continue; 3013 } 3014 3015 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3016 (lun->be_lun->maxlba > 0) ? 3017 lun->be_lun->maxlba + 1 : 0); 3018 3019 if (retval != 0) 3020 break; 3021 3022 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3023 lun->be_lun->blocksize); 3024 3025 if (retval != 0) 3026 break; 3027 3028 retval = sbuf_printf(sb, "<serial_number>"); 3029 3030 if (retval != 0) 3031 break; 3032 3033 retval = ctl_sbuf_printf_esc(sb, 3034 lun->be_lun->serial_num); 3035 3036 if (retval != 0) 3037 break; 3038 3039 retval = sbuf_printf(sb, "</serial_number>\n"); 3040 3041 if (retval != 0) 3042 break; 3043 3044 retval = sbuf_printf(sb, "<device_id>"); 3045 3046 if (retval != 0) 3047 break; 3048 3049 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3050 3051 if (retval != 0) 3052 break; 3053 3054 retval = sbuf_printf(sb, "</device_id>\n"); 3055 3056 if (retval != 0) 3057 break; 3058 3059 if (lun->backend->lun_info == NULL) { 3060 retval = sbuf_printf(sb, "</lun>\n"); 3061 if (retval != 0) 3062 break; 3063 continue; 3064 } 3065 3066 retval =lun->backend->lun_info(lun->be_lun->be_lun, sb); 3067 3068 if (retval != 0) 3069 break; 3070 3071 retval = sbuf_printf(sb, "</lun>\n"); 3072 3073 if (retval != 0) 3074 break; 3075 } 3076 mtx_unlock(&softc->ctl_lock); 3077 3078 if ((retval != 0) 3079 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3080 retval = 0; 3081 sbuf_delete(sb); 3082 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3083 snprintf(list->error_str, sizeof(list->error_str), 3084 "Out of space, %d bytes is too small", 3085 list->alloc_len); 3086 break; 3087 } 3088 3089 sbuf_finish(sb); 3090 3091 retval = copyout(sbuf_data(sb), list->lun_xml, 3092 sbuf_len(sb) + 1); 3093 3094 list->fill_len = sbuf_len(sb) + 1; 3095 list->status = CTL_LUN_LIST_OK; 3096 sbuf_delete(sb); 3097 break; 3098 } 3099 default: { 3100 /* XXX KDM should we fix this? */ 3101 #if 0 3102 struct ctl_backend_driver *backend; 3103 unsigned int type; 3104 int found; 3105 3106 found = 0; 3107 3108 /* 3109 * We encode the backend type as the ioctl type for backend 3110 * ioctls. So parse it out here, and then search for a 3111 * backend of this type. 3112 */ 3113 type = _IOC_TYPE(cmd); 3114 3115 STAILQ_FOREACH(backend, &softc->be_list, links) { 3116 if (backend->type == type) { 3117 found = 1; 3118 break; 3119 } 3120 } 3121 if (found == 0) { 3122 printf("ctl: unknown ioctl command %#lx or backend " 3123 "%d\n", cmd, type); 3124 retval = -EINVAL; 3125 break; 3126 } 3127 retval = backend->ioctl(dev, cmd, addr, flag, td); 3128 #endif 3129 retval = ENOTTY; 3130 break; 3131 } 3132 } 3133 return (retval); 3134 } 3135 3136 uint32_t 3137 ctl_get_initindex(struct ctl_nexus *nexus) 3138 { 3139 if (nexus->targ_port < CTL_MAX_PORTS) 3140 return (nexus->initid.id + 3141 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3142 else 3143 return (nexus->initid.id + 3144 ((nexus->targ_port - CTL_MAX_PORTS) * 3145 CTL_MAX_INIT_PER_PORT)); 3146 } 3147 3148 uint32_t 3149 ctl_get_resindex(struct ctl_nexus *nexus) 3150 { 3151 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3152 } 3153 3154 uint32_t 3155 ctl_port_idx(int port_num) 3156 { 3157 if (port_num < CTL_MAX_PORTS) 3158 return(port_num); 3159 else 3160 return(port_num - CTL_MAX_PORTS); 3161 } 3162 3163 /* 3164 * Note: This only works for bitmask sizes that are at least 32 bits, and 3165 * that are a power of 2. 3166 */ 3167 int 3168 ctl_ffz(uint32_t *mask, uint32_t size) 3169 { 3170 uint32_t num_chunks, num_pieces; 3171 int i, j; 3172 3173 num_chunks = (size >> 5); 3174 if (num_chunks == 0) 3175 num_chunks++; 3176 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3177 3178 for (i = 0; i < num_chunks; i++) { 3179 for (j = 0; j < num_pieces; j++) { 3180 if ((mask[i] & (1 << j)) == 0) 3181 return ((i << 5) + j); 3182 } 3183 } 3184 3185 return (-1); 3186 } 3187 3188 int 3189 ctl_set_mask(uint32_t *mask, uint32_t bit) 3190 { 3191 uint32_t chunk, piece; 3192 3193 chunk = bit >> 5; 3194 piece = bit % (sizeof(uint32_t) * 8); 3195 3196 if ((mask[chunk] & (1 << piece)) != 0) 3197 return (-1); 3198 else 3199 mask[chunk] |= (1 << piece); 3200 3201 return (0); 3202 } 3203 3204 int 3205 ctl_clear_mask(uint32_t *mask, uint32_t bit) 3206 { 3207 uint32_t chunk, piece; 3208 3209 chunk = bit >> 5; 3210 piece = bit % (sizeof(uint32_t) * 8); 3211 3212 if ((mask[chunk] & (1 << piece)) == 0) 3213 return (-1); 3214 else 3215 mask[chunk] &= ~(1 << piece); 3216 3217 return (0); 3218 } 3219 3220 int 3221 ctl_is_set(uint32_t *mask, uint32_t bit) 3222 { 3223 uint32_t chunk, piece; 3224 3225 chunk = bit >> 5; 3226 piece = bit % (sizeof(uint32_t) * 8); 3227 3228 if ((mask[chunk] & (1 << piece)) == 0) 3229 return (0); 3230 else 3231 return (1); 3232 } 3233 3234 #ifdef unused 3235 /* 3236 * The bus, target and lun are optional, they can be filled in later. 3237 * can_wait is used to determine whether we can wait on the malloc or not. 3238 */ 3239 union ctl_io* 3240 ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3241 uint32_t targ_lun, int can_wait) 3242 { 3243 union ctl_io *io; 3244 3245 if (can_wait) 3246 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3247 else 3248 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3249 3250 if (io != NULL) { 3251 io->io_hdr.io_type = io_type; 3252 io->io_hdr.targ_port = targ_port; 3253 /* 3254 * XXX KDM this needs to change/go away. We need to move 3255 * to a preallocated pool of ctl_scsiio structures. 3256 */ 3257 io->io_hdr.nexus.targ_target.id = targ_target; 3258 io->io_hdr.nexus.targ_lun = targ_lun; 3259 } 3260 3261 return (io); 3262 } 3263 3264 void 3265 ctl_kfree_io(union ctl_io *io) 3266 { 3267 free(io, M_CTL); 3268 } 3269 #endif /* unused */ 3270 3271 /* 3272 * ctl_softc, pool_type, total_ctl_io are passed in. 3273 * npool is passed out. 3274 */ 3275 int 3276 ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3277 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3278 { 3279 uint32_t i; 3280 union ctl_io *cur_io, *next_io; 3281 struct ctl_io_pool *pool; 3282 int retval; 3283 3284 retval = 0; 3285 3286 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, M_NOWAIT); 3287 if (pool == NULL) { 3288 retval = -ENOMEM; 3289 goto bailout; 3290 } 3291 3292 memset(pool, 0, sizeof(*pool)); 3293 3294 pool->type = pool_type; 3295 pool->ctl_softc = ctl_softc; 3296 3297 mtx_lock(&ctl_softc->ctl_lock); 3298 pool->id = ctl_softc->cur_pool_id++; 3299 mtx_unlock(&ctl_softc->ctl_lock); 3300 3301 pool->flags = CTL_POOL_FLAG_NONE; 3302 STAILQ_INIT(&pool->free_queue); 3303 3304 /* 3305 * XXX KDM other options here: 3306 * - allocate a page at a time 3307 * - allocate one big chunk of memory. 3308 * Page allocation might work well, but would take a little more 3309 * tracking. 3310 */ 3311 for (i = 0; i < total_ctl_io; i++) { 3312 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3313 M_NOWAIT); 3314 if (cur_io == NULL) { 3315 retval = ENOMEM; 3316 break; 3317 } 3318 cur_io->io_hdr.pool = pool; 3319 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3320 pool->total_ctl_io++; 3321 pool->free_ctl_io++; 3322 } 3323 3324 if (retval != 0) { 3325 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3326 cur_io != NULL; cur_io = next_io) { 3327 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3328 links); 3329 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3330 ctl_io_hdr, links); 3331 free(cur_io, M_CTL); 3332 } 3333 3334 free(pool, M_CTL); 3335 goto bailout; 3336 } 3337 mtx_lock(&ctl_softc->ctl_lock); 3338 ctl_softc->num_pools++; 3339 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3340 /* 3341 * Increment our usage count if this is an external consumer, so we 3342 * can't get unloaded until the external consumer (most likely a 3343 * FETD) unloads and frees his pool. 3344 * 3345 * XXX KDM will this increment the caller's module use count, or 3346 * mine? 3347 */ 3348 #if 0 3349 if ((pool_type != CTL_POOL_EMERGENCY) 3350 && (pool_type != CTL_POOL_INTERNAL) 3351 && (pool_type != CTL_POOL_IOCTL) 3352 && (pool_type != CTL_POOL_4OTHERSC)) 3353 MOD_INC_USE_COUNT; 3354 #endif 3355 3356 mtx_unlock(&ctl_softc->ctl_lock); 3357 3358 *npool = pool; 3359 3360 bailout: 3361 3362 return (retval); 3363 } 3364 3365 /* 3366 * Caller must hold ctl_softc->ctl_lock. 3367 */ 3368 int 3369 ctl_pool_acquire(struct ctl_io_pool *pool) 3370 { 3371 if (pool == NULL) 3372 return (-EINVAL); 3373 3374 if (pool->flags & CTL_POOL_FLAG_INVALID) 3375 return (-EINVAL); 3376 3377 pool->refcount++; 3378 3379 return (0); 3380 } 3381 3382 /* 3383 * Caller must hold ctl_softc->ctl_lock. 3384 */ 3385 int 3386 ctl_pool_invalidate(struct ctl_io_pool *pool) 3387 { 3388 if (pool == NULL) 3389 return (-EINVAL); 3390 3391 pool->flags |= CTL_POOL_FLAG_INVALID; 3392 3393 return (0); 3394 } 3395 3396 /* 3397 * Caller must hold ctl_softc->ctl_lock. 3398 */ 3399 int 3400 ctl_pool_release(struct ctl_io_pool *pool) 3401 { 3402 if (pool == NULL) 3403 return (-EINVAL); 3404 3405 if ((--pool->refcount == 0) 3406 && (pool->flags & CTL_POOL_FLAG_INVALID)) { 3407 ctl_pool_free(pool->ctl_softc, pool); 3408 } 3409 3410 return (0); 3411 } 3412 3413 /* 3414 * Must be called with ctl_softc->ctl_lock held. 3415 */ 3416 void 3417 ctl_pool_free(struct ctl_softc *ctl_softc, struct ctl_io_pool *pool) 3418 { 3419 union ctl_io *cur_io, *next_io; 3420 3421 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3422 cur_io != NULL; cur_io = next_io) { 3423 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3424 links); 3425 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, ctl_io_hdr, 3426 links); 3427 free(cur_io, M_CTL); 3428 } 3429 3430 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3431 ctl_softc->num_pools--; 3432 3433 /* 3434 * XXX KDM will this decrement the caller's usage count or mine? 3435 */ 3436 #if 0 3437 if ((pool->type != CTL_POOL_EMERGENCY) 3438 && (pool->type != CTL_POOL_INTERNAL) 3439 && (pool->type != CTL_POOL_IOCTL)) 3440 MOD_DEC_USE_COUNT; 3441 #endif 3442 3443 free(pool, M_CTL); 3444 } 3445 3446 /* 3447 * This routine does not block (except for spinlocks of course). 3448 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3449 * possible. 3450 */ 3451 union ctl_io * 3452 ctl_alloc_io(void *pool_ref) 3453 { 3454 union ctl_io *io; 3455 struct ctl_softc *ctl_softc; 3456 struct ctl_io_pool *pool, *npool; 3457 struct ctl_io_pool *emergency_pool; 3458 3459 pool = (struct ctl_io_pool *)pool_ref; 3460 3461 if (pool == NULL) { 3462 printf("%s: pool is NULL\n", __func__); 3463 return (NULL); 3464 } 3465 3466 emergency_pool = NULL; 3467 3468 ctl_softc = pool->ctl_softc; 3469 3470 mtx_lock(&ctl_softc->ctl_lock); 3471 /* 3472 * First, try to get the io structure from the user's pool. 3473 */ 3474 if (ctl_pool_acquire(pool) == 0) { 3475 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3476 if (io != NULL) { 3477 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3478 pool->total_allocated++; 3479 pool->free_ctl_io--; 3480 mtx_unlock(&ctl_softc->ctl_lock); 3481 return (io); 3482 } else 3483 ctl_pool_release(pool); 3484 } 3485 /* 3486 * If he doesn't have any io structures left, search for an 3487 * emergency pool and grab one from there. 3488 */ 3489 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3490 if (npool->type != CTL_POOL_EMERGENCY) 3491 continue; 3492 3493 if (ctl_pool_acquire(npool) != 0) 3494 continue; 3495 3496 emergency_pool = npool; 3497 3498 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3499 if (io != NULL) { 3500 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3501 npool->total_allocated++; 3502 npool->free_ctl_io--; 3503 mtx_unlock(&ctl_softc->ctl_lock); 3504 return (io); 3505 } else 3506 ctl_pool_release(npool); 3507 } 3508 3509 /* Drop the spinlock before we malloc */ 3510 mtx_unlock(&ctl_softc->ctl_lock); 3511 3512 /* 3513 * The emergency pool (if it exists) didn't have one, so try an 3514 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3515 */ 3516 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3517 if (io != NULL) { 3518 /* 3519 * If the emergency pool exists but is empty, add this 3520 * ctl_io to its list when it gets freed. 3521 */ 3522 if (emergency_pool != NULL) { 3523 mtx_lock(&ctl_softc->ctl_lock); 3524 if (ctl_pool_acquire(emergency_pool) == 0) { 3525 io->io_hdr.pool = emergency_pool; 3526 emergency_pool->total_ctl_io++; 3527 /* 3528 * Need to bump this, otherwise 3529 * total_allocated and total_freed won't 3530 * match when we no longer have anything 3531 * outstanding. 3532 */ 3533 emergency_pool->total_allocated++; 3534 } 3535 mtx_unlock(&ctl_softc->ctl_lock); 3536 } else 3537 io->io_hdr.pool = NULL; 3538 } 3539 3540 return (io); 3541 } 3542 3543 static void 3544 ctl_free_io_internal(union ctl_io *io, int have_lock) 3545 { 3546 if (io == NULL) 3547 return; 3548 3549 /* 3550 * If this ctl_io has a pool, return it to that pool. 3551 */ 3552 if (io->io_hdr.pool != NULL) { 3553 struct ctl_io_pool *pool; 3554 #if 0 3555 struct ctl_softc *ctl_softc; 3556 union ctl_io *tmp_io; 3557 unsigned long xflags; 3558 int i; 3559 3560 ctl_softc = control_softc; 3561 #endif 3562 3563 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3564 3565 if (have_lock == 0) 3566 mtx_lock(&pool->ctl_softc->ctl_lock); 3567 #if 0 3568 save_flags(xflags); 3569 3570 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3571 &ctl_softc->task_queue); tmp_io != NULL; i++, 3572 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3573 links)) { 3574 if (tmp_io == io) { 3575 printf("%s: %p is still on the task queue!\n", 3576 __func__, tmp_io); 3577 printf("%s: (%d): type %d " 3578 "msg %d cdb %x iptl: " 3579 "%d:%d:%d:%d tag 0x%04x " 3580 "flg %#lx\n", 3581 __func__, i, 3582 tmp_io->io_hdr.io_type, 3583 tmp_io->io_hdr.msg_type, 3584 tmp_io->scsiio.cdb[0], 3585 tmp_io->io_hdr.nexus.initid.id, 3586 tmp_io->io_hdr.nexus.targ_port, 3587 tmp_io->io_hdr.nexus.targ_target.id, 3588 tmp_io->io_hdr.nexus.targ_lun, 3589 (tmp_io->io_hdr.io_type == 3590 CTL_IO_TASK) ? 3591 tmp_io->taskio.tag_num : 3592 tmp_io->scsiio.tag_num, 3593 xflags); 3594 panic("I/O still on the task queue!"); 3595 } 3596 } 3597 #endif 3598 io->io_hdr.io_type = 0xff; 3599 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3600 pool->total_freed++; 3601 pool->free_ctl_io++; 3602 ctl_pool_release(pool); 3603 if (have_lock == 0) 3604 mtx_unlock(&pool->ctl_softc->ctl_lock); 3605 } else { 3606 /* 3607 * Otherwise, just free it. We probably malloced it and 3608 * the emergency pool wasn't available. 3609 */ 3610 free(io, M_CTL); 3611 } 3612 3613 } 3614 3615 void 3616 ctl_free_io(union ctl_io *io) 3617 { 3618 ctl_free_io_internal(io, /*have_lock*/ 0); 3619 } 3620 3621 void 3622 ctl_zero_io(union ctl_io *io) 3623 { 3624 void *pool_ref; 3625 3626 if (io == NULL) 3627 return; 3628 3629 /* 3630 * May need to preserve linked list pointers at some point too. 3631 */ 3632 pool_ref = io->io_hdr.pool; 3633 3634 memset(io, 0, sizeof(*io)); 3635 3636 io->io_hdr.pool = pool_ref; 3637 } 3638 3639 /* 3640 * This routine is currently used for internal copies of ctl_ios that need 3641 * to persist for some reason after we've already returned status to the 3642 * FETD. (Thus the flag set.) 3643 * 3644 * XXX XXX 3645 * Note that this makes a blind copy of all fields in the ctl_io, except 3646 * for the pool reference. This includes any memory that has been 3647 * allocated! That memory will no longer be valid after done has been 3648 * called, so this would be VERY DANGEROUS for command that actually does 3649 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3650 * start and stop commands, which don't transfer any data, so this is not a 3651 * problem. If it is used for anything else, the caller would also need to 3652 * allocate data buffer space and this routine would need to be modified to 3653 * copy the data buffer(s) as well. 3654 */ 3655 void 3656 ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3657 { 3658 void *pool_ref; 3659 3660 if ((src == NULL) 3661 || (dest == NULL)) 3662 return; 3663 3664 /* 3665 * May need to preserve linked list pointers at some point too. 3666 */ 3667 pool_ref = dest->io_hdr.pool; 3668 3669 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3670 3671 dest->io_hdr.pool = pool_ref; 3672 /* 3673 * We need to know that this is an internal copy, and doesn't need 3674 * to get passed back to the FETD that allocated it. 3675 */ 3676 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3677 } 3678 3679 #ifdef NEEDTOPORT 3680 static void 3681 ctl_update_power_subpage(struct copan_power_subpage *page) 3682 { 3683 int num_luns, num_partitions, config_type; 3684 struct ctl_softc *softc; 3685 cs_BOOL_t aor_present, shelf_50pct_power; 3686 cs_raidset_personality_t rs_type; 3687 int max_active_luns; 3688 3689 softc = control_softc; 3690 3691 /* subtract out the processor LUN */ 3692 num_luns = softc->num_luns - 1; 3693 /* 3694 * Default to 7 LUNs active, which was the only number we allowed 3695 * in the past. 3696 */ 3697 max_active_luns = 7; 3698 3699 num_partitions = config_GetRsPartitionInfo(); 3700 config_type = config_GetConfigType(); 3701 shelf_50pct_power = config_GetShelfPowerMode(); 3702 aor_present = config_IsAorRsPresent(); 3703 3704 rs_type = ddb_GetRsRaidType(1); 3705 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3706 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3707 EPRINT(0, "Unsupported RS type %d!", rs_type); 3708 } 3709 3710 3711 page->total_luns = num_luns; 3712 3713 switch (config_type) { 3714 case 40: 3715 /* 3716 * In a 40 drive configuration, it doesn't matter what DC 3717 * cards we have, whether we have AOR enabled or not, 3718 * partitioning or not, or what type of RAIDset we have. 3719 * In that scenario, we can power up every LUN we present 3720 * to the user. 3721 */ 3722 max_active_luns = num_luns; 3723 3724 break; 3725 case 64: 3726 if (shelf_50pct_power == CS_FALSE) { 3727 /* 25% power */ 3728 if (aor_present == CS_TRUE) { 3729 if (rs_type == 3730 CS_RAIDSET_PERSONALITY_RAID5) { 3731 max_active_luns = 7; 3732 } else if (rs_type == 3733 CS_RAIDSET_PERSONALITY_RAID1){ 3734 max_active_luns = 14; 3735 } else { 3736 /* XXX KDM now what?? */ 3737 } 3738 } else { 3739 if (rs_type == 3740 CS_RAIDSET_PERSONALITY_RAID5) { 3741 max_active_luns = 8; 3742 } else if (rs_type == 3743 CS_RAIDSET_PERSONALITY_RAID1){ 3744 max_active_luns = 16; 3745 } else { 3746 /* XXX KDM now what?? */ 3747 } 3748 } 3749 } else { 3750 /* 50% power */ 3751 /* 3752 * With 50% power in a 64 drive configuration, we 3753 * can power all LUNs we present. 3754 */ 3755 max_active_luns = num_luns; 3756 } 3757 break; 3758 case 112: 3759 if (shelf_50pct_power == CS_FALSE) { 3760 /* 25% power */ 3761 if (aor_present == CS_TRUE) { 3762 if (rs_type == 3763 CS_RAIDSET_PERSONALITY_RAID5) { 3764 max_active_luns = 7; 3765 } else if (rs_type == 3766 CS_RAIDSET_PERSONALITY_RAID1){ 3767 max_active_luns = 14; 3768 } else { 3769 /* XXX KDM now what?? */ 3770 } 3771 } else { 3772 if (rs_type == 3773 CS_RAIDSET_PERSONALITY_RAID5) { 3774 max_active_luns = 8; 3775 } else if (rs_type == 3776 CS_RAIDSET_PERSONALITY_RAID1){ 3777 max_active_luns = 16; 3778 } else { 3779 /* XXX KDM now what?? */ 3780 } 3781 } 3782 } else { 3783 /* 50% power */ 3784 if (aor_present == CS_TRUE) { 3785 if (rs_type == 3786 CS_RAIDSET_PERSONALITY_RAID5) { 3787 max_active_luns = 14; 3788 } else if (rs_type == 3789 CS_RAIDSET_PERSONALITY_RAID1){ 3790 /* 3791 * We're assuming here that disk 3792 * caching is enabled, and so we're 3793 * able to power up half of each 3794 * LUN, and cache all writes. 3795 */ 3796 max_active_luns = num_luns; 3797 } else { 3798 /* XXX KDM now what?? */ 3799 } 3800 } else { 3801 if (rs_type == 3802 CS_RAIDSET_PERSONALITY_RAID5) { 3803 max_active_luns = 15; 3804 } else if (rs_type == 3805 CS_RAIDSET_PERSONALITY_RAID1){ 3806 max_active_luns = 30; 3807 } else { 3808 /* XXX KDM now what?? */ 3809 } 3810 } 3811 } 3812 break; 3813 default: 3814 /* 3815 * In this case, we have an unknown configuration, so we 3816 * just use the default from above. 3817 */ 3818 break; 3819 } 3820 3821 page->max_active_luns = max_active_luns; 3822 #if 0 3823 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3824 page->total_luns, page->max_active_luns); 3825 #endif 3826 } 3827 #endif /* NEEDTOPORT */ 3828 3829 /* 3830 * This routine could be used in the future to load default and/or saved 3831 * mode page parameters for a particuar lun. 3832 */ 3833 static int 3834 ctl_init_page_index(struct ctl_lun *lun) 3835 { 3836 int i; 3837 struct ctl_page_index *page_index; 3838 struct ctl_softc *softc; 3839 3840 memcpy(&lun->mode_pages.index, page_index_template, 3841 sizeof(page_index_template)); 3842 3843 softc = lun->ctl_softc; 3844 3845 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3846 3847 page_index = &lun->mode_pages.index[i]; 3848 /* 3849 * If this is a disk-only mode page, there's no point in 3850 * setting it up. For some pages, we have to have some 3851 * basic information about the disk in order to calculate the 3852 * mode page data. 3853 */ 3854 if ((lun->be_lun->lun_type != T_DIRECT) 3855 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3856 continue; 3857 3858 switch (page_index->page_code & SMPH_PC_MASK) { 3859 case SMS_FORMAT_DEVICE_PAGE: { 3860 struct scsi_format_page *format_page; 3861 3862 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3863 panic("subpage is incorrect!"); 3864 3865 /* 3866 * Sectors per track are set above. Bytes per 3867 * sector need to be set here on a per-LUN basis. 3868 */ 3869 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3870 &format_page_default, 3871 sizeof(format_page_default)); 3872 memcpy(&lun->mode_pages.format_page[ 3873 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3874 sizeof(format_page_changeable)); 3875 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3876 &format_page_default, 3877 sizeof(format_page_default)); 3878 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3879 &format_page_default, 3880 sizeof(format_page_default)); 3881 3882 format_page = &lun->mode_pages.format_page[ 3883 CTL_PAGE_CURRENT]; 3884 scsi_ulto2b(lun->be_lun->blocksize, 3885 format_page->bytes_per_sector); 3886 3887 format_page = &lun->mode_pages.format_page[ 3888 CTL_PAGE_DEFAULT]; 3889 scsi_ulto2b(lun->be_lun->blocksize, 3890 format_page->bytes_per_sector); 3891 3892 format_page = &lun->mode_pages.format_page[ 3893 CTL_PAGE_SAVED]; 3894 scsi_ulto2b(lun->be_lun->blocksize, 3895 format_page->bytes_per_sector); 3896 3897 page_index->page_data = 3898 (uint8_t *)lun->mode_pages.format_page; 3899 break; 3900 } 3901 case SMS_RIGID_DISK_PAGE: { 3902 struct scsi_rigid_disk_page *rigid_disk_page; 3903 uint32_t sectors_per_cylinder; 3904 uint64_t cylinders; 3905 #ifndef __XSCALE__ 3906 int shift; 3907 #endif /* !__XSCALE__ */ 3908 3909 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3910 panic("invalid subpage value %d", 3911 page_index->subpage); 3912 3913 /* 3914 * Rotation rate and sectors per track are set 3915 * above. We calculate the cylinders here based on 3916 * capacity. Due to the number of heads and 3917 * sectors per track we're using, smaller arrays 3918 * may turn out to have 0 cylinders. Linux and 3919 * FreeBSD don't pay attention to these mode pages 3920 * to figure out capacity, but Solaris does. It 3921 * seems to deal with 0 cylinders just fine, and 3922 * works out a fake geometry based on the capacity. 3923 */ 3924 memcpy(&lun->mode_pages.rigid_disk_page[ 3925 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3926 sizeof(rigid_disk_page_default)); 3927 memcpy(&lun->mode_pages.rigid_disk_page[ 3928 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3929 sizeof(rigid_disk_page_changeable)); 3930 memcpy(&lun->mode_pages.rigid_disk_page[ 3931 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3932 sizeof(rigid_disk_page_default)); 3933 memcpy(&lun->mode_pages.rigid_disk_page[ 3934 CTL_PAGE_SAVED], &rigid_disk_page_default, 3935 sizeof(rigid_disk_page_default)); 3936 3937 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3938 CTL_DEFAULT_HEADS; 3939 3940 /* 3941 * The divide method here will be more accurate, 3942 * probably, but results in floating point being 3943 * used in the kernel on i386 (__udivdi3()). On the 3944 * XScale, though, __udivdi3() is implemented in 3945 * software. 3946 * 3947 * The shift method for cylinder calculation is 3948 * accurate if sectors_per_cylinder is a power of 3949 * 2. Otherwise it might be slightly off -- you 3950 * might have a bit of a truncation problem. 3951 */ 3952 #ifdef __XSCALE__ 3953 cylinders = (lun->be_lun->maxlba + 1) / 3954 sectors_per_cylinder; 3955 #else 3956 for (shift = 31; shift > 0; shift--) { 3957 if (sectors_per_cylinder & (1 << shift)) 3958 break; 3959 } 3960 cylinders = (lun->be_lun->maxlba + 1) >> shift; 3961 #endif 3962 3963 /* 3964 * We've basically got 3 bytes, or 24 bits for the 3965 * cylinder size in the mode page. If we're over, 3966 * just round down to 2^24. 3967 */ 3968 if (cylinders > 0xffffff) 3969 cylinders = 0xffffff; 3970 3971 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3972 CTL_PAGE_CURRENT]; 3973 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3974 3975 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3976 CTL_PAGE_DEFAULT]; 3977 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3978 3979 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3980 CTL_PAGE_SAVED]; 3981 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3982 3983 page_index->page_data = 3984 (uint8_t *)lun->mode_pages.rigid_disk_page; 3985 break; 3986 } 3987 case SMS_CACHING_PAGE: { 3988 3989 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3990 panic("invalid subpage value %d", 3991 page_index->subpage); 3992 /* 3993 * Defaults should be okay here, no calculations 3994 * needed. 3995 */ 3996 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 3997 &caching_page_default, 3998 sizeof(caching_page_default)); 3999 memcpy(&lun->mode_pages.caching_page[ 4000 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4001 sizeof(caching_page_changeable)); 4002 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4003 &caching_page_default, 4004 sizeof(caching_page_default)); 4005 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4006 &caching_page_default, 4007 sizeof(caching_page_default)); 4008 page_index->page_data = 4009 (uint8_t *)lun->mode_pages.caching_page; 4010 break; 4011 } 4012 case SMS_CONTROL_MODE_PAGE: { 4013 4014 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4015 panic("invalid subpage value %d", 4016 page_index->subpage); 4017 4018 /* 4019 * Defaults should be okay here, no calculations 4020 * needed. 4021 */ 4022 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4023 &control_page_default, 4024 sizeof(control_page_default)); 4025 memcpy(&lun->mode_pages.control_page[ 4026 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4027 sizeof(control_page_changeable)); 4028 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4029 &control_page_default, 4030 sizeof(control_page_default)); 4031 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4032 &control_page_default, 4033 sizeof(control_page_default)); 4034 page_index->page_data = 4035 (uint8_t *)lun->mode_pages.control_page; 4036 break; 4037 4038 } 4039 case SMS_VENDOR_SPECIFIC_PAGE:{ 4040 switch (page_index->subpage) { 4041 case PWR_SUBPAGE_CODE: { 4042 struct copan_power_subpage *current_page, 4043 *saved_page; 4044 4045 memcpy(&lun->mode_pages.power_subpage[ 4046 CTL_PAGE_CURRENT], 4047 &power_page_default, 4048 sizeof(power_page_default)); 4049 memcpy(&lun->mode_pages.power_subpage[ 4050 CTL_PAGE_CHANGEABLE], 4051 &power_page_changeable, 4052 sizeof(power_page_changeable)); 4053 memcpy(&lun->mode_pages.power_subpage[ 4054 CTL_PAGE_DEFAULT], 4055 &power_page_default, 4056 sizeof(power_page_default)); 4057 memcpy(&lun->mode_pages.power_subpage[ 4058 CTL_PAGE_SAVED], 4059 &power_page_default, 4060 sizeof(power_page_default)); 4061 page_index->page_data = 4062 (uint8_t *)lun->mode_pages.power_subpage; 4063 4064 current_page = (struct copan_power_subpage *) 4065 (page_index->page_data + 4066 (page_index->page_len * 4067 CTL_PAGE_CURRENT)); 4068 saved_page = (struct copan_power_subpage *) 4069 (page_index->page_data + 4070 (page_index->page_len * 4071 CTL_PAGE_SAVED)); 4072 break; 4073 } 4074 case APS_SUBPAGE_CODE: { 4075 struct copan_aps_subpage *current_page, 4076 *saved_page; 4077 4078 // This gets set multiple times but 4079 // it should always be the same. It's 4080 // only done during init so who cares. 4081 index_to_aps_page = i; 4082 4083 memcpy(&lun->mode_pages.aps_subpage[ 4084 CTL_PAGE_CURRENT], 4085 &aps_page_default, 4086 sizeof(aps_page_default)); 4087 memcpy(&lun->mode_pages.aps_subpage[ 4088 CTL_PAGE_CHANGEABLE], 4089 &aps_page_changeable, 4090 sizeof(aps_page_changeable)); 4091 memcpy(&lun->mode_pages.aps_subpage[ 4092 CTL_PAGE_DEFAULT], 4093 &aps_page_default, 4094 sizeof(aps_page_default)); 4095 memcpy(&lun->mode_pages.aps_subpage[ 4096 CTL_PAGE_SAVED], 4097 &aps_page_default, 4098 sizeof(aps_page_default)); 4099 page_index->page_data = 4100 (uint8_t *)lun->mode_pages.aps_subpage; 4101 4102 current_page = (struct copan_aps_subpage *) 4103 (page_index->page_data + 4104 (page_index->page_len * 4105 CTL_PAGE_CURRENT)); 4106 saved_page = (struct copan_aps_subpage *) 4107 (page_index->page_data + 4108 (page_index->page_len * 4109 CTL_PAGE_SAVED)); 4110 break; 4111 } 4112 case DBGCNF_SUBPAGE_CODE: { 4113 struct copan_debugconf_subpage *current_page, 4114 *saved_page; 4115 4116 memcpy(&lun->mode_pages.debugconf_subpage[ 4117 CTL_PAGE_CURRENT], 4118 &debugconf_page_default, 4119 sizeof(debugconf_page_default)); 4120 memcpy(&lun->mode_pages.debugconf_subpage[ 4121 CTL_PAGE_CHANGEABLE], 4122 &debugconf_page_changeable, 4123 sizeof(debugconf_page_changeable)); 4124 memcpy(&lun->mode_pages.debugconf_subpage[ 4125 CTL_PAGE_DEFAULT], 4126 &debugconf_page_default, 4127 sizeof(debugconf_page_default)); 4128 memcpy(&lun->mode_pages.debugconf_subpage[ 4129 CTL_PAGE_SAVED], 4130 &debugconf_page_default, 4131 sizeof(debugconf_page_default)); 4132 page_index->page_data = 4133 (uint8_t *)lun->mode_pages.debugconf_subpage; 4134 4135 current_page = (struct copan_debugconf_subpage *) 4136 (page_index->page_data + 4137 (page_index->page_len * 4138 CTL_PAGE_CURRENT)); 4139 saved_page = (struct copan_debugconf_subpage *) 4140 (page_index->page_data + 4141 (page_index->page_len * 4142 CTL_PAGE_SAVED)); 4143 break; 4144 } 4145 default: 4146 panic("invalid subpage value %d", 4147 page_index->subpage); 4148 break; 4149 } 4150 break; 4151 } 4152 default: 4153 panic("invalid page value %d", 4154 page_index->page_code & SMPH_PC_MASK); 4155 break; 4156 } 4157 } 4158 4159 return (CTL_RETVAL_COMPLETE); 4160 } 4161 4162 /* 4163 * LUN allocation. 4164 * 4165 * Requirements: 4166 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4167 * wants us to allocate the LUN and he can block. 4168 * - ctl_softc is always set 4169 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4170 * 4171 * Returns 0 for success, non-zero (errno) for failure. 4172 */ 4173 static int 4174 ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4175 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4176 { 4177 struct ctl_lun *nlun, *lun; 4178 struct ctl_frontend *fe; 4179 int lun_number, i; 4180 4181 if (be_lun == NULL) 4182 return (EINVAL); 4183 4184 /* 4185 * We currently only support Direct Access or Processor LUN types. 4186 */ 4187 switch (be_lun->lun_type) { 4188 case T_DIRECT: 4189 break; 4190 case T_PROCESSOR: 4191 break; 4192 case T_SEQUENTIAL: 4193 case T_CHANGER: 4194 default: 4195 be_lun->lun_config_status(be_lun->be_lun, 4196 CTL_LUN_CONFIG_FAILURE); 4197 break; 4198 } 4199 if (ctl_lun == NULL) { 4200 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4201 if (lun == NULL) { 4202 be_lun->lun_config_status(lun->be_lun->be_lun, 4203 CTL_LUN_CONFIG_FAILURE); 4204 return (-ENOMEM); 4205 } 4206 lun->flags = CTL_LUN_MALLOCED; 4207 } else 4208 lun = ctl_lun; 4209 4210 memset(lun, 0, sizeof(*lun)); 4211 4212 mtx_lock(&ctl_softc->ctl_lock); 4213 /* 4214 * See if the caller requested a particular LUN number. If so, see 4215 * if it is available. Otherwise, allocate the first available LUN. 4216 */ 4217 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4218 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4219 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4220 mtx_unlock(&ctl_softc->ctl_lock); 4221 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4222 printf("ctl: requested LUN ID %d is higher " 4223 "than CTL_MAX_LUNS - 1 (%d)\n", 4224 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4225 } else { 4226 /* 4227 * XXX KDM return an error, or just assign 4228 * another LUN ID in this case?? 4229 */ 4230 printf("ctl: requested LUN ID %d is already " 4231 "in use\n", be_lun->req_lun_id); 4232 } 4233 if (lun->flags & CTL_LUN_MALLOCED) 4234 free(lun, M_CTL); 4235 be_lun->lun_config_status(be_lun->be_lun, 4236 CTL_LUN_CONFIG_FAILURE); 4237 return (ENOSPC); 4238 } 4239 lun_number = be_lun->req_lun_id; 4240 } else { 4241 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4242 if (lun_number == -1) { 4243 mtx_unlock(&ctl_softc->ctl_lock); 4244 printf("ctl: can't allocate LUN on target %ju, out of " 4245 "LUNs\n", (uintmax_t)target_id.id); 4246 if (lun->flags & CTL_LUN_MALLOCED) 4247 free(lun, M_CTL); 4248 be_lun->lun_config_status(be_lun->be_lun, 4249 CTL_LUN_CONFIG_FAILURE); 4250 return (ENOSPC); 4251 } 4252 } 4253 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4254 4255 lun->target = target_id; 4256 lun->lun = lun_number; 4257 lun->be_lun = be_lun; 4258 /* 4259 * The processor LUN is always enabled. Disk LUNs come on line 4260 * disabled, and must be enabled by the backend. 4261 */ 4262 lun->flags = CTL_LUN_DISABLED; 4263 lun->backend = be_lun->be; 4264 be_lun->ctl_lun = lun; 4265 be_lun->lun_id = lun_number; 4266 atomic_add_int(&be_lun->be->num_luns, 1); 4267 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4268 lun->flags |= CTL_LUN_STOPPED; 4269 4270 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4271 lun->flags |= CTL_LUN_INOPERABLE; 4272 4273 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4274 lun->flags |= CTL_LUN_PRIMARY_SC; 4275 4276 lun->ctl_softc = ctl_softc; 4277 TAILQ_INIT(&lun->ooa_queue); 4278 TAILQ_INIT(&lun->blocked_queue); 4279 STAILQ_INIT(&lun->error_list); 4280 4281 /* 4282 * Initialize the mode page index. 4283 */ 4284 ctl_init_page_index(lun); 4285 4286 /* 4287 * Set the poweron UA for all initiators on this LUN only. 4288 */ 4289 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4290 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4291 4292 /* 4293 * Now, before we insert this lun on the lun list, set the lun 4294 * inventory changed UA for all other luns. 4295 */ 4296 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4297 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4298 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4299 } 4300 } 4301 4302 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4303 4304 ctl_softc->ctl_luns[lun_number] = lun; 4305 4306 ctl_softc->num_luns++; 4307 4308 /* Setup statistics gathering */ 4309 lun->stats.device_type = be_lun->lun_type; 4310 lun->stats.lun_number = lun_number; 4311 if (lun->stats.device_type == T_DIRECT) 4312 lun->stats.blocksize = be_lun->blocksize; 4313 else 4314 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4315 for (i = 0;i < CTL_MAX_PORTS;i++) 4316 lun->stats.ports[i].targ_port = i; 4317 4318 mtx_unlock(&ctl_softc->ctl_lock); 4319 4320 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4321 4322 /* 4323 * Run through each registered FETD and bring it online if it isn't 4324 * already. Enable the target ID if it hasn't been enabled, and 4325 * enable this particular LUN. 4326 */ 4327 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4328 int retval; 4329 4330 /* 4331 * XXX KDM this only works for ONE TARGET ID. We'll need 4332 * to do things differently if we go to a multiple target 4333 * ID scheme. 4334 */ 4335 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4336 4337 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4338 if (retval != 0) { 4339 printf("ctl_alloc_lun: FETD %s port %d " 4340 "returned error %d for targ_enable on " 4341 "target %ju\n", fe->port_name, 4342 fe->targ_port, retval, 4343 (uintmax_t)target_id.id); 4344 } else 4345 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4346 } 4347 4348 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4349 if (retval != 0) { 4350 printf("ctl_alloc_lun: FETD %s port %d returned error " 4351 "%d for lun_enable on target %ju lun %d\n", 4352 fe->port_name, fe->targ_port, retval, 4353 (uintmax_t)target_id.id, lun_number); 4354 } else 4355 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4356 } 4357 return (0); 4358 } 4359 4360 /* 4361 * Delete a LUN. 4362 * Assumptions: 4363 * - caller holds ctl_softc->ctl_lock. 4364 * - LUN has already been marked invalid and any pending I/O has been taken 4365 * care of. 4366 */ 4367 static int 4368 ctl_free_lun(struct ctl_lun *lun) 4369 { 4370 struct ctl_softc *softc; 4371 #if 0 4372 struct ctl_frontend *fe; 4373 #endif 4374 struct ctl_lun *nlun; 4375 union ctl_io *io, *next_io; 4376 int i; 4377 4378 softc = lun->ctl_softc; 4379 4380 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4381 4382 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4383 4384 softc->ctl_luns[lun->lun] = NULL; 4385 4386 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4387 printf("ctl_free_lun: aieee!! freeing a LUN with " 4388 "outstanding I/O!!\n"); 4389 } 4390 4391 /* 4392 * If we have anything pending on the RtR queue, remove it. 4393 */ 4394 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4395 io = next_io) { 4396 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4397 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4398 && (io->io_hdr.nexus.targ_lun == lun->lun)) 4399 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4400 ctl_io_hdr, links); 4401 } 4402 4403 /* 4404 * Then remove everything from the blocked queue. 4405 */ 4406 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4407 io = next_io) { 4408 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4409 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4410 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4411 } 4412 4413 /* 4414 * Now clear out the OOA queue, and free all the I/O. 4415 * XXX KDM should we notify the FETD here? We probably need to 4416 * quiesce the LUN before deleting it. 4417 */ 4418 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4419 io = next_io) { 4420 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4421 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4422 ctl_free_io_internal(io, /*have_lock*/ 1); 4423 } 4424 4425 softc->num_luns--; 4426 4427 /* 4428 * XXX KDM this scheme only works for a single target/multiple LUN 4429 * setup. It needs to be revamped for a multiple target scheme. 4430 * 4431 * XXX KDM this results in fe->lun_disable() getting called twice, 4432 * once when ctl_disable_lun() is called, and a second time here. 4433 * We really need to re-think the LUN disable semantics. There 4434 * should probably be several steps/levels to LUN removal: 4435 * - disable 4436 * - invalidate 4437 * - free 4438 * 4439 * Right now we only have a disable method when communicating to 4440 * the front end ports, at least for individual LUNs. 4441 */ 4442 #if 0 4443 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4444 int retval; 4445 4446 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4447 lun->lun); 4448 if (retval != 0) { 4449 printf("ctl_free_lun: FETD %s port %d returned error " 4450 "%d for lun_disable on target %ju lun %jd\n", 4451 fe->port_name, fe->targ_port, retval, 4452 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4453 } 4454 4455 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4456 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4457 4458 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4459 if (retval != 0) { 4460 printf("ctl_free_lun: FETD %s port %d " 4461 "returned error %d for targ_disable on " 4462 "target %ju\n", fe->port_name, 4463 fe->targ_port, retval, 4464 (uintmax_t)lun->target.id); 4465 } else 4466 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4467 4468 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4469 continue; 4470 4471 #if 0 4472 fe->port_offline(fe->onoff_arg); 4473 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4474 #endif 4475 } 4476 } 4477 #endif 4478 4479 /* 4480 * Tell the backend to free resources, if this LUN has a backend. 4481 */ 4482 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4483 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4484 4485 if (lun->flags & CTL_LUN_MALLOCED) 4486 free(lun, M_CTL); 4487 4488 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4489 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4490 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4491 } 4492 } 4493 4494 return (0); 4495 } 4496 4497 static void 4498 ctl_create_lun(struct ctl_be_lun *be_lun) 4499 { 4500 struct ctl_softc *ctl_softc; 4501 4502 ctl_softc = control_softc; 4503 4504 /* 4505 * ctl_alloc_lun() should handle all potential failure cases. 4506 */ 4507 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4508 } 4509 4510 int 4511 ctl_add_lun(struct ctl_be_lun *be_lun) 4512 { 4513 struct ctl_softc *ctl_softc; 4514 4515 ctl_softc = control_softc; 4516 4517 mtx_lock(&ctl_softc->ctl_lock); 4518 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4519 mtx_unlock(&ctl_softc->ctl_lock); 4520 4521 ctl_wakeup_thread(); 4522 4523 return (0); 4524 } 4525 4526 int 4527 ctl_enable_lun(struct ctl_be_lun *be_lun) 4528 { 4529 struct ctl_softc *ctl_softc; 4530 struct ctl_frontend *fe, *nfe; 4531 struct ctl_lun *lun; 4532 int retval; 4533 4534 ctl_softc = control_softc; 4535 4536 lun = (struct ctl_lun *)be_lun->ctl_lun; 4537 4538 mtx_lock(&ctl_softc->ctl_lock); 4539 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4540 /* 4541 * eh? Why did we get called if the LUN is already 4542 * enabled? 4543 */ 4544 mtx_unlock(&ctl_softc->ctl_lock); 4545 return (0); 4546 } 4547 lun->flags &= ~CTL_LUN_DISABLED; 4548 4549 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4550 nfe = STAILQ_NEXT(fe, links); 4551 4552 /* 4553 * Drop the lock while we call the FETD's enable routine. 4554 * This can lead to a callback into CTL (at least in the 4555 * case of the internal initiator frontend. 4556 */ 4557 mtx_unlock(&ctl_softc->ctl_lock); 4558 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4559 mtx_lock(&ctl_softc->ctl_lock); 4560 if (retval != 0) { 4561 printf("%s: FETD %s port %d returned error " 4562 "%d for lun_enable on target %ju lun %jd\n", 4563 __func__, fe->port_name, fe->targ_port, retval, 4564 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4565 } 4566 #if 0 4567 else { 4568 /* NOTE: TODO: why does lun enable affect port status? */ 4569 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4570 } 4571 #endif 4572 } 4573 4574 mtx_unlock(&ctl_softc->ctl_lock); 4575 4576 return (0); 4577 } 4578 4579 int 4580 ctl_disable_lun(struct ctl_be_lun *be_lun) 4581 { 4582 struct ctl_softc *ctl_softc; 4583 struct ctl_frontend *fe; 4584 struct ctl_lun *lun; 4585 int retval; 4586 4587 ctl_softc = control_softc; 4588 4589 lun = (struct ctl_lun *)be_lun->ctl_lun; 4590 4591 mtx_lock(&ctl_softc->ctl_lock); 4592 4593 if (lun->flags & CTL_LUN_DISABLED) { 4594 mtx_unlock(&ctl_softc->ctl_lock); 4595 return (0); 4596 } 4597 lun->flags |= CTL_LUN_DISABLED; 4598 4599 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4600 mtx_unlock(&ctl_softc->ctl_lock); 4601 /* 4602 * Drop the lock before we call the frontend's disable 4603 * routine, to avoid lock order reversals. 4604 * 4605 * XXX KDM what happens if the frontend list changes while 4606 * we're traversing it? It's unlikely, but should be handled. 4607 */ 4608 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4609 lun->lun); 4610 mtx_lock(&ctl_softc->ctl_lock); 4611 if (retval != 0) { 4612 printf("ctl_alloc_lun: FETD %s port %d returned error " 4613 "%d for lun_disable on target %ju lun %jd\n", 4614 fe->port_name, fe->targ_port, retval, 4615 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4616 } 4617 } 4618 4619 mtx_unlock(&ctl_softc->ctl_lock); 4620 4621 return (0); 4622 } 4623 4624 int 4625 ctl_start_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_stop_lun(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_STOPPED; 4653 mtx_unlock(&ctl_softc->ctl_lock); 4654 4655 return (0); 4656 } 4657 4658 int 4659 ctl_lun_offline(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_lun_online(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 lun->flags &= ~CTL_LUN_OFFLINE; 4687 mtx_unlock(&ctl_softc->ctl_lock); 4688 4689 return (0); 4690 } 4691 4692 int 4693 ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4694 { 4695 struct ctl_softc *ctl_softc; 4696 struct ctl_lun *lun; 4697 4698 ctl_softc = control_softc; 4699 4700 lun = (struct ctl_lun *)be_lun->ctl_lun; 4701 4702 mtx_lock(&ctl_softc->ctl_lock); 4703 4704 /* 4705 * The LUN needs to be disabled before it can be marked invalid. 4706 */ 4707 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4708 mtx_unlock(&ctl_softc->ctl_lock); 4709 return (-1); 4710 } 4711 /* 4712 * Mark the LUN invalid. 4713 */ 4714 lun->flags |= CTL_LUN_INVALID; 4715 4716 /* 4717 * If there is nothing in the OOA queue, go ahead and free the LUN. 4718 * If we have something in the OOA queue, we'll free it when the 4719 * last I/O completes. 4720 */ 4721 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4722 ctl_free_lun(lun); 4723 mtx_unlock(&ctl_softc->ctl_lock); 4724 4725 return (0); 4726 } 4727 4728 int 4729 ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4730 { 4731 struct ctl_softc *ctl_softc; 4732 struct ctl_lun *lun; 4733 4734 ctl_softc = control_softc; 4735 lun = (struct ctl_lun *)be_lun->ctl_lun; 4736 4737 mtx_lock(&ctl_softc->ctl_lock); 4738 lun->flags |= CTL_LUN_INOPERABLE; 4739 mtx_unlock(&ctl_softc->ctl_lock); 4740 4741 return (0); 4742 } 4743 4744 int 4745 ctl_lun_operable(struct ctl_be_lun *be_lun) 4746 { 4747 struct ctl_softc *ctl_softc; 4748 struct ctl_lun *lun; 4749 4750 ctl_softc = control_softc; 4751 lun = (struct ctl_lun *)be_lun->ctl_lun; 4752 4753 mtx_lock(&ctl_softc->ctl_lock); 4754 lun->flags &= ~CTL_LUN_INOPERABLE; 4755 mtx_unlock(&ctl_softc->ctl_lock); 4756 4757 return (0); 4758 } 4759 4760 int 4761 ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4762 int lock) 4763 { 4764 struct ctl_softc *softc; 4765 struct ctl_lun *lun; 4766 struct copan_aps_subpage *current_sp; 4767 struct ctl_page_index *page_index; 4768 int i; 4769 4770 softc = control_softc; 4771 4772 mtx_lock(&softc->ctl_lock); 4773 4774 lun = (struct ctl_lun *)be_lun->ctl_lun; 4775 4776 page_index = NULL; 4777 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4778 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4779 APS_PAGE_CODE) 4780 continue; 4781 4782 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4783 continue; 4784 page_index = &lun->mode_pages.index[i]; 4785 } 4786 4787 if (page_index == NULL) { 4788 mtx_unlock(&softc->ctl_lock); 4789 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4790 (uintmax_t)lun->lun); 4791 return (1); 4792 } 4793 #if 0 4794 if ((softc->aps_locked_lun != 0) 4795 && (softc->aps_locked_lun != lun->lun)) { 4796 printf("%s: attempt to lock LUN %llu when %llu is already " 4797 "locked\n"); 4798 mtx_unlock(&softc->ctl_lock); 4799 return (1); 4800 } 4801 #endif 4802 4803 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4804 (page_index->page_len * CTL_PAGE_CURRENT)); 4805 4806 if (lock != 0) { 4807 current_sp->lock_active = APS_LOCK_ACTIVE; 4808 softc->aps_locked_lun = lun->lun; 4809 } else { 4810 current_sp->lock_active = 0; 4811 softc->aps_locked_lun = 0; 4812 } 4813 4814 4815 /* 4816 * If we're in HA mode, try to send the lock message to the other 4817 * side. 4818 */ 4819 if (ctl_is_single == 0) { 4820 int isc_retval; 4821 union ctl_ha_msg lock_msg; 4822 4823 lock_msg.hdr.nexus = *nexus; 4824 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4825 if (lock != 0) 4826 lock_msg.aps.lock_flag = 1; 4827 else 4828 lock_msg.aps.lock_flag = 0; 4829 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4830 sizeof(lock_msg), 0); 4831 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4832 printf("%s: APS (lock=%d) error returned from " 4833 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4834 mtx_unlock(&softc->ctl_lock); 4835 return (1); 4836 } 4837 } 4838 4839 mtx_unlock(&softc->ctl_lock); 4840 4841 return (0); 4842 } 4843 4844 void 4845 ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4846 { 4847 struct ctl_lun *lun; 4848 struct ctl_softc *softc; 4849 int i; 4850 4851 softc = control_softc; 4852 4853 mtx_lock(&softc->ctl_lock); 4854 4855 lun = (struct ctl_lun *)be_lun->ctl_lun; 4856 4857 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4858 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4859 4860 mtx_unlock(&softc->ctl_lock); 4861 } 4862 4863 /* 4864 * Backend "memory move is complete" callback for requests that never 4865 * make it down to say RAIDCore's configuration code. 4866 */ 4867 int 4868 ctl_config_move_done(union ctl_io *io) 4869 { 4870 int retval; 4871 4872 retval = CTL_RETVAL_COMPLETE; 4873 4874 4875 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4876 /* 4877 * XXX KDM this shouldn't happen, but what if it does? 4878 */ 4879 if (io->io_hdr.io_type != CTL_IO_SCSI) 4880 panic("I/O type isn't CTL_IO_SCSI!"); 4881 4882 if ((io->io_hdr.port_status == 0) 4883 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4884 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4885 io->io_hdr.status = CTL_SUCCESS; 4886 else if ((io->io_hdr.port_status != 0) 4887 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4888 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4889 /* 4890 * For hardware error sense keys, the sense key 4891 * specific value is defined to be a retry count, 4892 * but we use it to pass back an internal FETD 4893 * error code. XXX KDM Hopefully the FETD is only 4894 * using 16 bits for an error code, since that's 4895 * all the space we have in the sks field. 4896 */ 4897 ctl_set_internal_failure(&io->scsiio, 4898 /*sks_valid*/ 1, 4899 /*retry_count*/ 4900 io->io_hdr.port_status); 4901 free(io->scsiio.kern_data_ptr, M_CTL); 4902 ctl_done(io); 4903 goto bailout; 4904 } 4905 4906 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4907 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4908 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4909 /* 4910 * XXX KDM just assuming a single pointer here, and not a 4911 * S/G list. If we start using S/G lists for config data, 4912 * we'll need to know how to clean them up here as well. 4913 */ 4914 free(io->scsiio.kern_data_ptr, M_CTL); 4915 /* Hopefully the user has already set the status... */ 4916 ctl_done(io); 4917 } else { 4918 /* 4919 * XXX KDM now we need to continue data movement. Some 4920 * options: 4921 * - call ctl_scsiio() again? We don't do this for data 4922 * writes, because for those at least we know ahead of 4923 * time where the write will go and how long it is. For 4924 * config writes, though, that information is largely 4925 * contained within the write itself, thus we need to 4926 * parse out the data again. 4927 * 4928 * - Call some other function once the data is in? 4929 */ 4930 4931 /* 4932 * XXX KDM call ctl_scsiio() again for now, and check flag 4933 * bits to see whether we're allocated or not. 4934 */ 4935 retval = ctl_scsiio(&io->scsiio); 4936 } 4937 bailout: 4938 return (retval); 4939 } 4940 4941 /* 4942 * This gets called by a backend driver when it is done with a 4943 * configuration write. 4944 */ 4945 void 4946 ctl_config_write_done(union ctl_io *io) 4947 { 4948 /* 4949 * If the IO_CONT flag is set, we need to call the supplied 4950 * function to continue processing the I/O, instead of completing 4951 * the I/O just yet. 4952 * 4953 * If there is an error, though, we don't want to keep processing. 4954 * Instead, just send status back to the initiator. 4955 */ 4956 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 4957 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 4958 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 4959 io->scsiio.io_cont(io); 4960 return; 4961 } 4962 /* 4963 * Since a configuration write can be done for commands that actually 4964 * have data allocated, like write buffer, and commands that have 4965 * no data, like start/stop unit, we need to check here. 4966 */ 4967 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 4968 free(io->scsiio.kern_data_ptr, M_CTL); 4969 ctl_done(io); 4970 } 4971 4972 /* 4973 * SCSI release command. 4974 */ 4975 int 4976 ctl_scsi_release(struct ctl_scsiio *ctsio) 4977 { 4978 int length, longid, thirdparty_id, resv_id; 4979 struct ctl_softc *ctl_softc; 4980 struct ctl_lun *lun; 4981 4982 length = 0; 4983 resv_id = 0; 4984 4985 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 4986 4987 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 4988 ctl_softc = control_softc; 4989 4990 switch (ctsio->cdb[0]) { 4991 case RELEASE: { 4992 struct scsi_release *cdb; 4993 4994 cdb = (struct scsi_release *)ctsio->cdb; 4995 if ((cdb->byte2 & 0x1f) != 0) { 4996 ctl_set_invalid_field(ctsio, 4997 /*sks_valid*/ 1, 4998 /*command*/ 1, 4999 /*field*/ 1, 5000 /*bit_valid*/ 0, 5001 /*bit*/ 0); 5002 ctl_done((union ctl_io *)ctsio); 5003 return (CTL_RETVAL_COMPLETE); 5004 } 5005 break; 5006 } 5007 case RELEASE_10: { 5008 struct scsi_release_10 *cdb; 5009 5010 cdb = (struct scsi_release_10 *)ctsio->cdb; 5011 5012 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5013 ctl_set_invalid_field(ctsio, 5014 /*sks_valid*/ 1, 5015 /*command*/ 1, 5016 /*field*/ 1, 5017 /*bit_valid*/ 1, 5018 /*bit*/ 0); 5019 ctl_done((union ctl_io *)ctsio); 5020 return (CTL_RETVAL_COMPLETE); 5021 5022 } 5023 5024 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5025 ctl_set_invalid_field(ctsio, 5026 /*sks_valid*/ 1, 5027 /*command*/ 1, 5028 /*field*/ 1, 5029 /*bit_valid*/ 1, 5030 /*bit*/ 4); 5031 ctl_done((union ctl_io *)ctsio); 5032 return (CTL_RETVAL_COMPLETE); 5033 } 5034 5035 if (cdb->byte2 & SR10_LONGID) 5036 longid = 1; 5037 else 5038 thirdparty_id = cdb->thirdparty_id; 5039 5040 resv_id = cdb->resv_id; 5041 length = scsi_2btoul(cdb->length); 5042 break; 5043 } 5044 } 5045 5046 5047 /* 5048 * XXX KDM right now, we only support LUN reservation. We don't 5049 * support 3rd party reservations, or extent reservations, which 5050 * might actually need the parameter list. If we've gotten this 5051 * far, we've got a LUN reservation. Anything else got kicked out 5052 * above. So, according to SPC, ignore the length. 5053 */ 5054 length = 0; 5055 5056 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5057 && (length > 0)) { 5058 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5059 if (ctsio->kern_data_ptr == NULL) { 5060 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5061 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5062 ctl_done((union ctl_io *)ctsio); 5063 return (CTL_RETVAL_COMPLETE); 5064 } 5065 ctsio->kern_data_len = length; 5066 ctsio->kern_total_len = length; 5067 ctsio->kern_data_resid = 0; 5068 ctsio->kern_rel_offset = 0; 5069 ctsio->kern_sg_entries = 0; 5070 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5071 ctsio->be_move_done = ctl_config_move_done; 5072 ctl_datamove((union ctl_io *)ctsio); 5073 5074 return (CTL_RETVAL_COMPLETE); 5075 } 5076 5077 if (length > 0) 5078 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5079 5080 mtx_lock(&ctl_softc->ctl_lock); 5081 5082 /* 5083 * According to SPC, it is not an error for an intiator to attempt 5084 * to release a reservation on a LUN that isn't reserved, or that 5085 * is reserved by another initiator. The reservation can only be 5086 * released, though, by the initiator who made it or by one of 5087 * several reset type events. 5088 */ 5089 if (lun->flags & CTL_LUN_RESERVED) { 5090 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5091 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5092 && (ctsio->io_hdr.nexus.targ_target.id == 5093 lun->rsv_nexus.targ_target.id)) { 5094 lun->flags &= ~CTL_LUN_RESERVED; 5095 } 5096 } 5097 5098 ctsio->scsi_status = SCSI_STATUS_OK; 5099 ctsio->io_hdr.status = CTL_SUCCESS; 5100 5101 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5102 free(ctsio->kern_data_ptr, M_CTL); 5103 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5104 } 5105 5106 mtx_unlock(&ctl_softc->ctl_lock); 5107 5108 ctl_done((union ctl_io *)ctsio); 5109 return (CTL_RETVAL_COMPLETE); 5110 } 5111 5112 int 5113 ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5114 { 5115 int extent, thirdparty, longid; 5116 int resv_id, length; 5117 uint64_t thirdparty_id; 5118 struct ctl_softc *ctl_softc; 5119 struct ctl_lun *lun; 5120 5121 extent = 0; 5122 thirdparty = 0; 5123 longid = 0; 5124 resv_id = 0; 5125 length = 0; 5126 thirdparty_id = 0; 5127 5128 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5129 5130 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5131 ctl_softc = control_softc; 5132 5133 switch (ctsio->cdb[0]) { 5134 case RESERVE: { 5135 struct scsi_reserve *cdb; 5136 5137 cdb = (struct scsi_reserve *)ctsio->cdb; 5138 if ((cdb->byte2 & 0x1f) != 0) { 5139 ctl_set_invalid_field(ctsio, 5140 /*sks_valid*/ 1, 5141 /*command*/ 1, 5142 /*field*/ 1, 5143 /*bit_valid*/ 0, 5144 /*bit*/ 0); 5145 ctl_done((union ctl_io *)ctsio); 5146 return (CTL_RETVAL_COMPLETE); 5147 } 5148 resv_id = cdb->resv_id; 5149 length = scsi_2btoul(cdb->length); 5150 break; 5151 } 5152 case RESERVE_10: { 5153 struct scsi_reserve_10 *cdb; 5154 5155 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5156 5157 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5158 ctl_set_invalid_field(ctsio, 5159 /*sks_valid*/ 1, 5160 /*command*/ 1, 5161 /*field*/ 1, 5162 /*bit_valid*/ 1, 5163 /*bit*/ 0); 5164 ctl_done((union ctl_io *)ctsio); 5165 return (CTL_RETVAL_COMPLETE); 5166 } 5167 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5168 ctl_set_invalid_field(ctsio, 5169 /*sks_valid*/ 1, 5170 /*command*/ 1, 5171 /*field*/ 1, 5172 /*bit_valid*/ 1, 5173 /*bit*/ 4); 5174 ctl_done((union ctl_io *)ctsio); 5175 return (CTL_RETVAL_COMPLETE); 5176 } 5177 if (cdb->byte2 & SR10_LONGID) 5178 longid = 1; 5179 else 5180 thirdparty_id = cdb->thirdparty_id; 5181 5182 resv_id = cdb->resv_id; 5183 length = scsi_2btoul(cdb->length); 5184 break; 5185 } 5186 } 5187 5188 /* 5189 * XXX KDM right now, we only support LUN reservation. We don't 5190 * support 3rd party reservations, or extent reservations, which 5191 * might actually need the parameter list. If we've gotten this 5192 * far, we've got a LUN reservation. Anything else got kicked out 5193 * above. So, according to SPC, ignore the length. 5194 */ 5195 length = 0; 5196 5197 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5198 && (length > 0)) { 5199 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5200 if (ctsio->kern_data_ptr == NULL) { 5201 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5202 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5203 ctl_done((union ctl_io *)ctsio); 5204 return (CTL_RETVAL_COMPLETE); 5205 } 5206 ctsio->kern_data_len = length; 5207 ctsio->kern_total_len = length; 5208 ctsio->kern_data_resid = 0; 5209 ctsio->kern_rel_offset = 0; 5210 ctsio->kern_sg_entries = 0; 5211 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5212 ctsio->be_move_done = ctl_config_move_done; 5213 ctl_datamove((union ctl_io *)ctsio); 5214 5215 return (CTL_RETVAL_COMPLETE); 5216 } 5217 5218 if (length > 0) 5219 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5220 5221 mtx_lock(&ctl_softc->ctl_lock); 5222 if (lun->flags & CTL_LUN_RESERVED) { 5223 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5224 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5225 || (ctsio->io_hdr.nexus.targ_target.id != 5226 lun->rsv_nexus.targ_target.id)) { 5227 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5228 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5229 goto bailout; 5230 } 5231 } 5232 5233 lun->flags |= CTL_LUN_RESERVED; 5234 lun->rsv_nexus = ctsio->io_hdr.nexus; 5235 5236 ctsio->scsi_status = SCSI_STATUS_OK; 5237 ctsio->io_hdr.status = CTL_SUCCESS; 5238 5239 bailout: 5240 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5241 free(ctsio->kern_data_ptr, M_CTL); 5242 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5243 } 5244 5245 mtx_unlock(&ctl_softc->ctl_lock); 5246 5247 ctl_done((union ctl_io *)ctsio); 5248 return (CTL_RETVAL_COMPLETE); 5249 } 5250 5251 int 5252 ctl_start_stop(struct ctl_scsiio *ctsio) 5253 { 5254 struct scsi_start_stop_unit *cdb; 5255 struct ctl_lun *lun; 5256 struct ctl_softc *ctl_softc; 5257 int retval; 5258 5259 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5260 5261 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5262 ctl_softc = control_softc; 5263 retval = 0; 5264 5265 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5266 5267 /* 5268 * XXX KDM 5269 * We don't support the immediate bit on a stop unit. In order to 5270 * do that, we would need to code up a way to know that a stop is 5271 * pending, and hold off any new commands until it completes, one 5272 * way or another. Then we could accept or reject those commands 5273 * depending on its status. We would almost need to do the reverse 5274 * of what we do below for an immediate start -- return the copy of 5275 * the ctl_io to the FETD with status to send to the host (and to 5276 * free the copy!) and then free the original I/O once the stop 5277 * actually completes. That way, the OOA queue mechanism can work 5278 * to block commands that shouldn't proceed. Another alternative 5279 * would be to put the copy in the queue in place of the original, 5280 * and return the original back to the caller. That could be 5281 * slightly safer.. 5282 */ 5283 if ((cdb->byte2 & SSS_IMMED) 5284 && ((cdb->how & SSS_START) == 0)) { 5285 ctl_set_invalid_field(ctsio, 5286 /*sks_valid*/ 1, 5287 /*command*/ 1, 5288 /*field*/ 1, 5289 /*bit_valid*/ 1, 5290 /*bit*/ 0); 5291 ctl_done((union ctl_io *)ctsio); 5292 return (CTL_RETVAL_COMPLETE); 5293 } 5294 5295 /* 5296 * We don't support the power conditions field. We need to check 5297 * this prior to checking the load/eject and start/stop bits. 5298 */ 5299 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5300 ctl_set_invalid_field(ctsio, 5301 /*sks_valid*/ 1, 5302 /*command*/ 1, 5303 /*field*/ 4, 5304 /*bit_valid*/ 1, 5305 /*bit*/ 4); 5306 ctl_done((union ctl_io *)ctsio); 5307 return (CTL_RETVAL_COMPLETE); 5308 } 5309 5310 /* 5311 * Media isn't removable, so we can't load or eject it. 5312 */ 5313 if ((cdb->how & SSS_LOEJ) != 0) { 5314 ctl_set_invalid_field(ctsio, 5315 /*sks_valid*/ 1, 5316 /*command*/ 1, 5317 /*field*/ 4, 5318 /*bit_valid*/ 1, 5319 /*bit*/ 1); 5320 ctl_done((union ctl_io *)ctsio); 5321 return (CTL_RETVAL_COMPLETE); 5322 } 5323 5324 if ((lun->flags & CTL_LUN_PR_RESERVED) 5325 && ((cdb->how & SSS_START)==0)) { 5326 uint32_t residx; 5327 5328 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5329 if (!lun->per_res[residx].registered 5330 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5331 5332 ctl_set_reservation_conflict(ctsio); 5333 ctl_done((union ctl_io *)ctsio); 5334 return (CTL_RETVAL_COMPLETE); 5335 } 5336 } 5337 5338 /* 5339 * If there is no backend on this device, we can't start or stop 5340 * it. In theory we shouldn't get any start/stop commands in the 5341 * first place at this level if the LUN doesn't have a backend. 5342 * That should get stopped by the command decode code. 5343 */ 5344 if (lun->backend == NULL) { 5345 ctl_set_invalid_opcode(ctsio); 5346 ctl_done((union ctl_io *)ctsio); 5347 return (CTL_RETVAL_COMPLETE); 5348 } 5349 5350 /* 5351 * XXX KDM Copan-specific offline behavior. 5352 * Figure out a reasonable way to port this? 5353 */ 5354 #ifdef NEEDTOPORT 5355 mtx_lock(&ctl_softc->ctl_lock); 5356 5357 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5358 && (lun->flags & CTL_LUN_OFFLINE)) { 5359 /* 5360 * If the LUN is offline, and the on/offline bit isn't set, 5361 * reject the start or stop. Otherwise, let it through. 5362 */ 5363 mtx_unlock(&ctl_softc->ctl_lock); 5364 ctl_set_lun_not_ready(ctsio); 5365 ctl_done((union ctl_io *)ctsio); 5366 } else { 5367 mtx_unlock(&ctl_softc->ctl_lock); 5368 #endif /* NEEDTOPORT */ 5369 /* 5370 * This could be a start or a stop when we're online, 5371 * or a stop/offline or start/online. A start or stop when 5372 * we're offline is covered in the case above. 5373 */ 5374 /* 5375 * In the non-immediate case, we send the request to 5376 * the backend and return status to the user when 5377 * it is done. 5378 * 5379 * In the immediate case, we allocate a new ctl_io 5380 * to hold a copy of the request, and send that to 5381 * the backend. We then set good status on the 5382 * user's request and return it immediately. 5383 */ 5384 if (cdb->byte2 & SSS_IMMED) { 5385 union ctl_io *new_io; 5386 5387 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5388 if (new_io == NULL) { 5389 ctl_set_busy(ctsio); 5390 ctl_done((union ctl_io *)ctsio); 5391 } else { 5392 ctl_copy_io((union ctl_io *)ctsio, 5393 new_io); 5394 retval = lun->backend->config_write(new_io); 5395 ctl_set_success(ctsio); 5396 ctl_done((union ctl_io *)ctsio); 5397 } 5398 } else { 5399 retval = lun->backend->config_write( 5400 (union ctl_io *)ctsio); 5401 } 5402 #ifdef NEEDTOPORT 5403 } 5404 #endif 5405 return (retval); 5406 } 5407 5408 /* 5409 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5410 * we don't really do anything with the LBA and length fields if the user 5411 * passes them in. Instead we'll just flush out the cache for the entire 5412 * LUN. 5413 */ 5414 int 5415 ctl_sync_cache(struct ctl_scsiio *ctsio) 5416 { 5417 struct ctl_lun *lun; 5418 struct ctl_softc *ctl_softc; 5419 uint64_t starting_lba; 5420 uint32_t block_count; 5421 int reladr, immed; 5422 int retval; 5423 5424 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5425 5426 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5427 ctl_softc = control_softc; 5428 retval = 0; 5429 reladr = 0; 5430 immed = 0; 5431 5432 switch (ctsio->cdb[0]) { 5433 case SYNCHRONIZE_CACHE: { 5434 struct scsi_sync_cache *cdb; 5435 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5436 5437 if (cdb->byte2 & SSC_RELADR) 5438 reladr = 1; 5439 5440 if (cdb->byte2 & SSC_IMMED) 5441 immed = 1; 5442 5443 starting_lba = scsi_4btoul(cdb->begin_lba); 5444 block_count = scsi_2btoul(cdb->lb_count); 5445 break; 5446 } 5447 case SYNCHRONIZE_CACHE_16: { 5448 struct scsi_sync_cache_16 *cdb; 5449 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5450 5451 if (cdb->byte2 & SSC_RELADR) 5452 reladr = 1; 5453 5454 if (cdb->byte2 & SSC_IMMED) 5455 immed = 1; 5456 5457 starting_lba = scsi_8btou64(cdb->begin_lba); 5458 block_count = scsi_4btoul(cdb->lb_count); 5459 break; 5460 } 5461 default: 5462 ctl_set_invalid_opcode(ctsio); 5463 ctl_done((union ctl_io *)ctsio); 5464 goto bailout; 5465 break; /* NOTREACHED */ 5466 } 5467 5468 if (immed) { 5469 /* 5470 * We don't support the immediate bit. Since it's in the 5471 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5472 * commands, we can just return the same error in either 5473 * case. 5474 */ 5475 ctl_set_invalid_field(ctsio, 5476 /*sks_valid*/ 1, 5477 /*command*/ 1, 5478 /*field*/ 1, 5479 /*bit_valid*/ 1, 5480 /*bit*/ 1); 5481 ctl_done((union ctl_io *)ctsio); 5482 goto bailout; 5483 } 5484 5485 if (reladr) { 5486 /* 5487 * We don't support the reladr bit either. It can only be 5488 * used with linked commands, and we don't support linked 5489 * commands. Since the bit is in the same place for the 5490 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5491 * just return the same error in either case. 5492 */ 5493 ctl_set_invalid_field(ctsio, 5494 /*sks_valid*/ 1, 5495 /*command*/ 1, 5496 /*field*/ 1, 5497 /*bit_valid*/ 1, 5498 /*bit*/ 0); 5499 ctl_done((union ctl_io *)ctsio); 5500 goto bailout; 5501 } 5502 5503 /* 5504 * We check the LBA and length, but don't do anything with them. 5505 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5506 * get flushed. This check will just help satisfy anyone who wants 5507 * to see an error for an out of range LBA. 5508 */ 5509 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5510 ctl_set_lba_out_of_range(ctsio); 5511 ctl_done((union ctl_io *)ctsio); 5512 goto bailout; 5513 } 5514 5515 /* 5516 * If this LUN has no backend, we can't flush the cache anyway. 5517 */ 5518 if (lun->backend == NULL) { 5519 ctl_set_invalid_opcode(ctsio); 5520 ctl_done((union ctl_io *)ctsio); 5521 goto bailout; 5522 } 5523 5524 /* 5525 * Check to see whether we're configured to send the SYNCHRONIZE 5526 * CACHE command directly to the back end. 5527 */ 5528 mtx_lock(&ctl_softc->ctl_lock); 5529 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5530 && (++(lun->sync_count) >= lun->sync_interval)) { 5531 lun->sync_count = 0; 5532 mtx_unlock(&ctl_softc->ctl_lock); 5533 retval = lun->backend->config_write((union ctl_io *)ctsio); 5534 } else { 5535 mtx_unlock(&ctl_softc->ctl_lock); 5536 ctl_set_success(ctsio); 5537 ctl_done((union ctl_io *)ctsio); 5538 } 5539 5540 bailout: 5541 5542 return (retval); 5543 } 5544 5545 int 5546 ctl_format(struct ctl_scsiio *ctsio) 5547 { 5548 struct scsi_format *cdb; 5549 struct ctl_lun *lun; 5550 struct ctl_softc *ctl_softc; 5551 int length, defect_list_len; 5552 5553 CTL_DEBUG_PRINT(("ctl_format\n")); 5554 5555 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5556 ctl_softc = control_softc; 5557 5558 cdb = (struct scsi_format *)ctsio->cdb; 5559 5560 length = 0; 5561 if (cdb->byte2 & SF_FMTDATA) { 5562 if (cdb->byte2 & SF_LONGLIST) 5563 length = sizeof(struct scsi_format_header_long); 5564 else 5565 length = sizeof(struct scsi_format_header_short); 5566 } 5567 5568 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5569 && (length > 0)) { 5570 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5571 if (ctsio->kern_data_ptr == NULL) { 5572 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5573 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5574 ctl_done((union ctl_io *)ctsio); 5575 return (CTL_RETVAL_COMPLETE); 5576 } 5577 ctsio->kern_data_len = length; 5578 ctsio->kern_total_len = length; 5579 ctsio->kern_data_resid = 0; 5580 ctsio->kern_rel_offset = 0; 5581 ctsio->kern_sg_entries = 0; 5582 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5583 ctsio->be_move_done = ctl_config_move_done; 5584 ctl_datamove((union ctl_io *)ctsio); 5585 5586 return (CTL_RETVAL_COMPLETE); 5587 } 5588 5589 defect_list_len = 0; 5590 5591 if (cdb->byte2 & SF_FMTDATA) { 5592 if (cdb->byte2 & SF_LONGLIST) { 5593 struct scsi_format_header_long *header; 5594 5595 header = (struct scsi_format_header_long *) 5596 ctsio->kern_data_ptr; 5597 5598 defect_list_len = scsi_4btoul(header->defect_list_len); 5599 if (defect_list_len != 0) { 5600 ctl_set_invalid_field(ctsio, 5601 /*sks_valid*/ 1, 5602 /*command*/ 0, 5603 /*field*/ 2, 5604 /*bit_valid*/ 0, 5605 /*bit*/ 0); 5606 goto bailout; 5607 } 5608 } else { 5609 struct scsi_format_header_short *header; 5610 5611 header = (struct scsi_format_header_short *) 5612 ctsio->kern_data_ptr; 5613 5614 defect_list_len = scsi_2btoul(header->defect_list_len); 5615 if (defect_list_len != 0) { 5616 ctl_set_invalid_field(ctsio, 5617 /*sks_valid*/ 1, 5618 /*command*/ 0, 5619 /*field*/ 2, 5620 /*bit_valid*/ 0, 5621 /*bit*/ 0); 5622 goto bailout; 5623 } 5624 } 5625 } 5626 5627 /* 5628 * The format command will clear out the "Medium format corrupted" 5629 * status if set by the configuration code. That status is really 5630 * just a way to notify the host that we have lost the media, and 5631 * get them to issue a command that will basically make them think 5632 * they're blowing away the media. 5633 */ 5634 mtx_lock(&ctl_softc->ctl_lock); 5635 lun->flags &= ~CTL_LUN_INOPERABLE; 5636 mtx_unlock(&ctl_softc->ctl_lock); 5637 5638 ctsio->scsi_status = SCSI_STATUS_OK; 5639 ctsio->io_hdr.status = CTL_SUCCESS; 5640 bailout: 5641 5642 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5643 free(ctsio->kern_data_ptr, M_CTL); 5644 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5645 } 5646 5647 ctl_done((union ctl_io *)ctsio); 5648 return (CTL_RETVAL_COMPLETE); 5649 } 5650 5651 int 5652 ctl_write_buffer(struct ctl_scsiio *ctsio) 5653 { 5654 struct scsi_write_buffer *cdb; 5655 struct copan_page_header *header; 5656 struct ctl_lun *lun; 5657 struct ctl_softc *ctl_softc; 5658 int buffer_offset, len; 5659 int retval; 5660 5661 header = NULL; 5662 5663 retval = CTL_RETVAL_COMPLETE; 5664 5665 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5666 5667 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5668 ctl_softc = control_softc; 5669 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5670 5671 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5672 ctl_set_invalid_field(ctsio, 5673 /*sks_valid*/ 1, 5674 /*command*/ 1, 5675 /*field*/ 1, 5676 /*bit_valid*/ 1, 5677 /*bit*/ 4); 5678 ctl_done((union ctl_io *)ctsio); 5679 return (CTL_RETVAL_COMPLETE); 5680 } 5681 if (cdb->buffer_id != 0) { 5682 ctl_set_invalid_field(ctsio, 5683 /*sks_valid*/ 1, 5684 /*command*/ 1, 5685 /*field*/ 2, 5686 /*bit_valid*/ 0, 5687 /*bit*/ 0); 5688 ctl_done((union ctl_io *)ctsio); 5689 return (CTL_RETVAL_COMPLETE); 5690 } 5691 5692 len = scsi_3btoul(cdb->length); 5693 buffer_offset = scsi_3btoul(cdb->offset); 5694 5695 if (len > sizeof(lun->write_buffer)) { 5696 ctl_set_invalid_field(ctsio, 5697 /*sks_valid*/ 1, 5698 /*command*/ 1, 5699 /*field*/ 6, 5700 /*bit_valid*/ 0, 5701 /*bit*/ 0); 5702 ctl_done((union ctl_io *)ctsio); 5703 return (CTL_RETVAL_COMPLETE); 5704 } 5705 5706 if (buffer_offset != 0) { 5707 ctl_set_invalid_field(ctsio, 5708 /*sks_valid*/ 1, 5709 /*command*/ 1, 5710 /*field*/ 3, 5711 /*bit_valid*/ 0, 5712 /*bit*/ 0); 5713 ctl_done((union ctl_io *)ctsio); 5714 return (CTL_RETVAL_COMPLETE); 5715 } 5716 5717 /* 5718 * If we've got a kernel request that hasn't been malloced yet, 5719 * malloc it and tell the caller the data buffer is here. 5720 */ 5721 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5722 ctsio->kern_data_ptr = lun->write_buffer; 5723 ctsio->kern_data_len = len; 5724 ctsio->kern_total_len = len; 5725 ctsio->kern_data_resid = 0; 5726 ctsio->kern_rel_offset = 0; 5727 ctsio->kern_sg_entries = 0; 5728 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5729 ctsio->be_move_done = ctl_config_move_done; 5730 ctl_datamove((union ctl_io *)ctsio); 5731 5732 return (CTL_RETVAL_COMPLETE); 5733 } 5734 5735 ctl_done((union ctl_io *)ctsio); 5736 5737 return (CTL_RETVAL_COMPLETE); 5738 } 5739 5740 /* 5741 * Note that this function currently doesn't actually do anything inside 5742 * CTL to enforce things if the DQue bit is turned on. 5743 * 5744 * Also note that this function can't be used in the default case, because 5745 * the DQue bit isn't set in the changeable mask for the control mode page 5746 * anyway. This is just here as an example for how to implement a page 5747 * handler, and a placeholder in case we want to allow the user to turn 5748 * tagged queueing on and off. 5749 * 5750 * The D_SENSE bit handling is functional, however, and will turn 5751 * descriptor sense on and off for a given LUN. 5752 */ 5753 int 5754 ctl_control_page_handler(struct ctl_scsiio *ctsio, 5755 struct ctl_page_index *page_index, uint8_t *page_ptr) 5756 { 5757 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5758 struct ctl_lun *lun; 5759 struct ctl_softc *softc; 5760 int set_ua; 5761 uint32_t initidx; 5762 5763 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5764 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5765 set_ua = 0; 5766 5767 user_cp = (struct scsi_control_page *)page_ptr; 5768 current_cp = (struct scsi_control_page *) 5769 (page_index->page_data + (page_index->page_len * 5770 CTL_PAGE_CURRENT)); 5771 saved_cp = (struct scsi_control_page *) 5772 (page_index->page_data + (page_index->page_len * 5773 CTL_PAGE_SAVED)); 5774 5775 softc = control_softc; 5776 5777 mtx_lock(&softc->ctl_lock); 5778 if (((current_cp->rlec & SCP_DSENSE) == 0) 5779 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5780 /* 5781 * Descriptor sense is currently turned off and the user 5782 * wants to turn it on. 5783 */ 5784 current_cp->rlec |= SCP_DSENSE; 5785 saved_cp->rlec |= SCP_DSENSE; 5786 lun->flags |= CTL_LUN_SENSE_DESC; 5787 set_ua = 1; 5788 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5789 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5790 /* 5791 * Descriptor sense is currently turned on, and the user 5792 * wants to turn it off. 5793 */ 5794 current_cp->rlec &= ~SCP_DSENSE; 5795 saved_cp->rlec &= ~SCP_DSENSE; 5796 lun->flags &= ~CTL_LUN_SENSE_DESC; 5797 set_ua = 1; 5798 } 5799 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5800 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5801 #ifdef NEEDTOPORT 5802 csevent_log(CSC_CTL | CSC_SHELF_SW | 5803 CTL_UNTAG_TO_UNTAG, 5804 csevent_LogType_Trace, 5805 csevent_Severity_Information, 5806 csevent_AlertLevel_Green, 5807 csevent_FRU_Firmware, 5808 csevent_FRU_Unknown, 5809 "Received untagged to untagged transition"); 5810 #endif /* NEEDTOPORT */ 5811 } else { 5812 #ifdef NEEDTOPORT 5813 csevent_log(CSC_CTL | CSC_SHELF_SW | 5814 CTL_UNTAG_TO_TAG, 5815 csevent_LogType_ConfigChange, 5816 csevent_Severity_Information, 5817 csevent_AlertLevel_Green, 5818 csevent_FRU_Firmware, 5819 csevent_FRU_Unknown, 5820 "Received untagged to tagged " 5821 "queueing transition"); 5822 #endif /* NEEDTOPORT */ 5823 5824 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5825 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5826 set_ua = 1; 5827 } 5828 } else { 5829 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5830 #ifdef NEEDTOPORT 5831 csevent_log(CSC_CTL | CSC_SHELF_SW | 5832 CTL_TAG_TO_UNTAG, 5833 csevent_LogType_ConfigChange, 5834 csevent_Severity_Warning, 5835 csevent_AlertLevel_Yellow, 5836 csevent_FRU_Firmware, 5837 csevent_FRU_Unknown, 5838 "Received tagged queueing to untagged " 5839 "transition"); 5840 #endif /* NEEDTOPORT */ 5841 5842 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5843 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5844 set_ua = 1; 5845 } else { 5846 #ifdef NEEDTOPORT 5847 csevent_log(CSC_CTL | CSC_SHELF_SW | 5848 CTL_TAG_TO_TAG, 5849 csevent_LogType_Trace, 5850 csevent_Severity_Information, 5851 csevent_AlertLevel_Green, 5852 csevent_FRU_Firmware, 5853 csevent_FRU_Unknown, 5854 "Received tagged queueing to tagged " 5855 "queueing transition"); 5856 #endif /* NEEDTOPORT */ 5857 } 5858 } 5859 if (set_ua != 0) { 5860 int i; 5861 /* 5862 * Let other initiators know that the mode 5863 * parameters for this LUN have changed. 5864 */ 5865 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 5866 if (i == initidx) 5867 continue; 5868 5869 lun->pending_sense[i].ua_pending |= 5870 CTL_UA_MODE_CHANGE; 5871 } 5872 } 5873 mtx_unlock(&softc->ctl_lock); 5874 5875 return (0); 5876 } 5877 5878 int 5879 ctl_power_sp_handler(struct ctl_scsiio *ctsio, 5880 struct ctl_page_index *page_index, uint8_t *page_ptr) 5881 { 5882 return (0); 5883 } 5884 5885 int 5886 ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 5887 struct ctl_page_index *page_index, int pc) 5888 { 5889 struct copan_power_subpage *page; 5890 5891 page = (struct copan_power_subpage *)page_index->page_data + 5892 (page_index->page_len * pc); 5893 5894 switch (pc) { 5895 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5896 /* 5897 * We don't update the changable bits for this page. 5898 */ 5899 break; 5900 case SMS_PAGE_CTRL_CURRENT >> 6: 5901 case SMS_PAGE_CTRL_DEFAULT >> 6: 5902 case SMS_PAGE_CTRL_SAVED >> 6: 5903 #ifdef NEEDTOPORT 5904 ctl_update_power_subpage(page); 5905 #endif 5906 break; 5907 default: 5908 #ifdef NEEDTOPORT 5909 EPRINT(0, "Invalid PC %d!!", pc); 5910 #endif 5911 break; 5912 } 5913 return (0); 5914 } 5915 5916 5917 int 5918 ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 5919 struct ctl_page_index *page_index, uint8_t *page_ptr) 5920 { 5921 struct copan_aps_subpage *user_sp; 5922 struct copan_aps_subpage *current_sp; 5923 union ctl_modepage_info *modepage_info; 5924 struct ctl_softc *softc; 5925 struct ctl_lun *lun; 5926 int retval; 5927 5928 retval = CTL_RETVAL_COMPLETE; 5929 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 5930 (page_index->page_len * CTL_PAGE_CURRENT)); 5931 softc = control_softc; 5932 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5933 5934 user_sp = (struct copan_aps_subpage *)page_ptr; 5935 5936 modepage_info = (union ctl_modepage_info *) 5937 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 5938 5939 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 5940 modepage_info->header.subpage = page_index->subpage; 5941 modepage_info->aps.lock_active = user_sp->lock_active; 5942 5943 mtx_lock(&softc->ctl_lock); 5944 5945 /* 5946 * If there is a request to lock the LUN and another LUN is locked 5947 * this is an error. If the requested LUN is already locked ignore 5948 * the request. If no LUN is locked attempt to lock it. 5949 * if there is a request to unlock the LUN and the LUN is currently 5950 * locked attempt to unlock it. Otherwise ignore the request. i.e. 5951 * if another LUN is locked or no LUN is locked. 5952 */ 5953 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 5954 if (softc->aps_locked_lun == lun->lun) { 5955 /* 5956 * This LUN is already locked, so we're done. 5957 */ 5958 retval = CTL_RETVAL_COMPLETE; 5959 } else if (softc->aps_locked_lun == 0) { 5960 /* 5961 * No one has the lock, pass the request to the 5962 * backend. 5963 */ 5964 retval = lun->backend->config_write( 5965 (union ctl_io *)ctsio); 5966 } else { 5967 /* 5968 * Someone else has the lock, throw out the request. 5969 */ 5970 ctl_set_already_locked(ctsio); 5971 free(ctsio->kern_data_ptr, M_CTL); 5972 ctl_done((union ctl_io *)ctsio); 5973 5974 /* 5975 * Set the return value so that ctl_do_mode_select() 5976 * won't try to complete the command. We already 5977 * completed it here. 5978 */ 5979 retval = CTL_RETVAL_ERROR; 5980 } 5981 } else if (softc->aps_locked_lun == lun->lun) { 5982 /* 5983 * This LUN is locked, so pass the unlock request to the 5984 * backend. 5985 */ 5986 retval = lun->backend->config_write((union ctl_io *)ctsio); 5987 } 5988 mtx_unlock(&softc->ctl_lock); 5989 5990 return (retval); 5991 } 5992 5993 int 5994 ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 5995 struct ctl_page_index *page_index, 5996 uint8_t *page_ptr) 5997 { 5998 uint8_t *c; 5999 int i; 6000 6001 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6002 ctl_time_io_secs = 6003 (c[0] << 8) | 6004 (c[1] << 0) | 6005 0; 6006 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6007 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6008 printf("page data:"); 6009 for (i=0; i<8; i++) 6010 printf(" %.2x",page_ptr[i]); 6011 printf("\n"); 6012 return (0); 6013 } 6014 6015 int 6016 ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6017 struct ctl_page_index *page_index, 6018 int pc) 6019 { 6020 struct copan_debugconf_subpage *page; 6021 6022 page = (struct copan_debugconf_subpage *)page_index->page_data + 6023 (page_index->page_len * pc); 6024 6025 switch (pc) { 6026 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6027 case SMS_PAGE_CTRL_DEFAULT >> 6: 6028 case SMS_PAGE_CTRL_SAVED >> 6: 6029 /* 6030 * We don't update the changable or default bits for this page. 6031 */ 6032 break; 6033 case SMS_PAGE_CTRL_CURRENT >> 6: 6034 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6035 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6036 break; 6037 default: 6038 #ifdef NEEDTOPORT 6039 EPRINT(0, "Invalid PC %d!!", pc); 6040 #endif /* NEEDTOPORT */ 6041 break; 6042 } 6043 return (0); 6044 } 6045 6046 6047 static int 6048 ctl_do_mode_select(union ctl_io *io) 6049 { 6050 struct scsi_mode_page_header *page_header; 6051 struct ctl_page_index *page_index; 6052 struct ctl_scsiio *ctsio; 6053 int control_dev, page_len; 6054 int page_len_offset, page_len_size; 6055 union ctl_modepage_info *modepage_info; 6056 struct ctl_lun *lun; 6057 int *len_left, *len_used; 6058 int retval, i; 6059 6060 ctsio = &io->scsiio; 6061 page_index = NULL; 6062 page_len = 0; 6063 retval = CTL_RETVAL_COMPLETE; 6064 6065 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6066 6067 if (lun->be_lun->lun_type != T_DIRECT) 6068 control_dev = 1; 6069 else 6070 control_dev = 0; 6071 6072 modepage_info = (union ctl_modepage_info *) 6073 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6074 len_left = &modepage_info->header.len_left; 6075 len_used = &modepage_info->header.len_used; 6076 6077 do_next_page: 6078 6079 page_header = (struct scsi_mode_page_header *) 6080 (ctsio->kern_data_ptr + *len_used); 6081 6082 if (*len_left == 0) { 6083 free(ctsio->kern_data_ptr, M_CTL); 6084 ctl_set_success(ctsio); 6085 ctl_done((union ctl_io *)ctsio); 6086 return (CTL_RETVAL_COMPLETE); 6087 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6088 6089 free(ctsio->kern_data_ptr, M_CTL); 6090 ctl_set_param_len_error(ctsio); 6091 ctl_done((union ctl_io *)ctsio); 6092 return (CTL_RETVAL_COMPLETE); 6093 6094 } else if ((page_header->page_code & SMPH_SPF) 6095 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6096 6097 free(ctsio->kern_data_ptr, M_CTL); 6098 ctl_set_param_len_error(ctsio); 6099 ctl_done((union ctl_io *)ctsio); 6100 return (CTL_RETVAL_COMPLETE); 6101 } 6102 6103 6104 /* 6105 * XXX KDM should we do something with the block descriptor? 6106 */ 6107 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6108 6109 if ((control_dev != 0) 6110 && (lun->mode_pages.index[i].page_flags & 6111 CTL_PAGE_FLAG_DISK_ONLY)) 6112 continue; 6113 6114 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6115 (page_header->page_code & SMPH_PC_MASK)) 6116 continue; 6117 6118 /* 6119 * If neither page has a subpage code, then we've got a 6120 * match. 6121 */ 6122 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6123 && ((page_header->page_code & SMPH_SPF) == 0)) { 6124 page_index = &lun->mode_pages.index[i]; 6125 page_len = page_header->page_length; 6126 break; 6127 } 6128 6129 /* 6130 * If both pages have subpages, then the subpage numbers 6131 * have to match. 6132 */ 6133 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6134 && (page_header->page_code & SMPH_SPF)) { 6135 struct scsi_mode_page_header_sp *sph; 6136 6137 sph = (struct scsi_mode_page_header_sp *)page_header; 6138 6139 if (lun->mode_pages.index[i].subpage == 6140 sph->subpage) { 6141 page_index = &lun->mode_pages.index[i]; 6142 page_len = scsi_2btoul(sph->page_length); 6143 break; 6144 } 6145 } 6146 } 6147 6148 /* 6149 * If we couldn't find the page, or if we don't have a mode select 6150 * handler for it, send back an error to the user. 6151 */ 6152 if ((page_index == NULL) 6153 || (page_index->select_handler == NULL)) { 6154 ctl_set_invalid_field(ctsio, 6155 /*sks_valid*/ 1, 6156 /*command*/ 0, 6157 /*field*/ *len_used, 6158 /*bit_valid*/ 0, 6159 /*bit*/ 0); 6160 free(ctsio->kern_data_ptr, M_CTL); 6161 ctl_done((union ctl_io *)ctsio); 6162 return (CTL_RETVAL_COMPLETE); 6163 } 6164 6165 if (page_index->page_code & SMPH_SPF) { 6166 page_len_offset = 2; 6167 page_len_size = 2; 6168 } else { 6169 page_len_size = 1; 6170 page_len_offset = 1; 6171 } 6172 6173 /* 6174 * If the length the initiator gives us isn't the one we specify in 6175 * the mode page header, or if they didn't specify enough data in 6176 * the CDB to avoid truncating this page, kick out the request. 6177 */ 6178 if ((page_len != (page_index->page_len - page_len_offset - 6179 page_len_size)) 6180 || (*len_left < page_index->page_len)) { 6181 6182 6183 ctl_set_invalid_field(ctsio, 6184 /*sks_valid*/ 1, 6185 /*command*/ 0, 6186 /*field*/ *len_used + page_len_offset, 6187 /*bit_valid*/ 0, 6188 /*bit*/ 0); 6189 free(ctsio->kern_data_ptr, M_CTL); 6190 ctl_done((union ctl_io *)ctsio); 6191 return (CTL_RETVAL_COMPLETE); 6192 } 6193 6194 /* 6195 * Run through the mode page, checking to make sure that the bits 6196 * the user changed are actually legal for him to change. 6197 */ 6198 for (i = 0; i < page_index->page_len; i++) { 6199 uint8_t *user_byte, *change_mask, *current_byte; 6200 int bad_bit; 6201 int j; 6202 6203 user_byte = (uint8_t *)page_header + i; 6204 change_mask = page_index->page_data + 6205 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6206 current_byte = page_index->page_data + 6207 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6208 6209 /* 6210 * Check to see whether the user set any bits in this byte 6211 * that he is not allowed to set. 6212 */ 6213 if ((*user_byte & ~(*change_mask)) == 6214 (*current_byte & ~(*change_mask))) 6215 continue; 6216 6217 /* 6218 * Go through bit by bit to determine which one is illegal. 6219 */ 6220 bad_bit = 0; 6221 for (j = 7; j >= 0; j--) { 6222 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6223 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6224 bad_bit = i; 6225 break; 6226 } 6227 } 6228 ctl_set_invalid_field(ctsio, 6229 /*sks_valid*/ 1, 6230 /*command*/ 0, 6231 /*field*/ *len_used + i, 6232 /*bit_valid*/ 1, 6233 /*bit*/ bad_bit); 6234 free(ctsio->kern_data_ptr, M_CTL); 6235 ctl_done((union ctl_io *)ctsio); 6236 return (CTL_RETVAL_COMPLETE); 6237 } 6238 6239 /* 6240 * Decrement these before we call the page handler, since we may 6241 * end up getting called back one way or another before the handler 6242 * returns to this context. 6243 */ 6244 *len_left -= page_index->page_len; 6245 *len_used += page_index->page_len; 6246 6247 retval = page_index->select_handler(ctsio, page_index, 6248 (uint8_t *)page_header); 6249 6250 /* 6251 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6252 * wait until this queued command completes to finish processing 6253 * the mode page. If it returns anything other than 6254 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6255 * already set the sense information, freed the data pointer, and 6256 * completed the io for us. 6257 */ 6258 if (retval != CTL_RETVAL_COMPLETE) 6259 goto bailout_no_done; 6260 6261 /* 6262 * If the initiator sent us more than one page, parse the next one. 6263 */ 6264 if (*len_left > 0) 6265 goto do_next_page; 6266 6267 ctl_set_success(ctsio); 6268 free(ctsio->kern_data_ptr, M_CTL); 6269 ctl_done((union ctl_io *)ctsio); 6270 6271 bailout_no_done: 6272 6273 return (CTL_RETVAL_COMPLETE); 6274 6275 } 6276 6277 int 6278 ctl_mode_select(struct ctl_scsiio *ctsio) 6279 { 6280 int param_len, pf, sp; 6281 int header_size, bd_len; 6282 int len_left, len_used; 6283 struct ctl_page_index *page_index; 6284 struct ctl_lun *lun; 6285 int control_dev, page_len; 6286 union ctl_modepage_info *modepage_info; 6287 int retval; 6288 6289 pf = 0; 6290 sp = 0; 6291 page_len = 0; 6292 len_used = 0; 6293 len_left = 0; 6294 retval = 0; 6295 bd_len = 0; 6296 page_index = NULL; 6297 6298 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6299 6300 if (lun->be_lun->lun_type != T_DIRECT) 6301 control_dev = 1; 6302 else 6303 control_dev = 0; 6304 6305 switch (ctsio->cdb[0]) { 6306 case MODE_SELECT_6: { 6307 struct scsi_mode_select_6 *cdb; 6308 6309 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6310 6311 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6312 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6313 6314 param_len = cdb->length; 6315 header_size = sizeof(struct scsi_mode_header_6); 6316 break; 6317 } 6318 case MODE_SELECT_10: { 6319 struct scsi_mode_select_10 *cdb; 6320 6321 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6322 6323 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6324 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6325 6326 param_len = scsi_2btoul(cdb->length); 6327 header_size = sizeof(struct scsi_mode_header_10); 6328 break; 6329 } 6330 default: 6331 ctl_set_invalid_opcode(ctsio); 6332 ctl_done((union ctl_io *)ctsio); 6333 return (CTL_RETVAL_COMPLETE); 6334 break; /* NOTREACHED */ 6335 } 6336 6337 /* 6338 * From SPC-3: 6339 * "A parameter list length of zero indicates that the Data-Out Buffer 6340 * shall be empty. This condition shall not be considered as an error." 6341 */ 6342 if (param_len == 0) { 6343 ctl_set_success(ctsio); 6344 ctl_done((union ctl_io *)ctsio); 6345 return (CTL_RETVAL_COMPLETE); 6346 } 6347 6348 /* 6349 * Since we'll hit this the first time through, prior to 6350 * allocation, we don't need to free a data buffer here. 6351 */ 6352 if (param_len < header_size) { 6353 ctl_set_param_len_error(ctsio); 6354 ctl_done((union ctl_io *)ctsio); 6355 return (CTL_RETVAL_COMPLETE); 6356 } 6357 6358 /* 6359 * Allocate the data buffer and grab the user's data. In theory, 6360 * we shouldn't have to sanity check the parameter list length here 6361 * because the maximum size is 64K. We should be able to malloc 6362 * that much without too many problems. 6363 */ 6364 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6365 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6366 if (ctsio->kern_data_ptr == NULL) { 6367 ctl_set_busy(ctsio); 6368 ctl_done((union ctl_io *)ctsio); 6369 return (CTL_RETVAL_COMPLETE); 6370 } 6371 ctsio->kern_data_len = param_len; 6372 ctsio->kern_total_len = param_len; 6373 ctsio->kern_data_resid = 0; 6374 ctsio->kern_rel_offset = 0; 6375 ctsio->kern_sg_entries = 0; 6376 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6377 ctsio->be_move_done = ctl_config_move_done; 6378 ctl_datamove((union ctl_io *)ctsio); 6379 6380 return (CTL_RETVAL_COMPLETE); 6381 } 6382 6383 switch (ctsio->cdb[0]) { 6384 case MODE_SELECT_6: { 6385 struct scsi_mode_header_6 *mh6; 6386 6387 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6388 bd_len = mh6->blk_desc_len; 6389 break; 6390 } 6391 case MODE_SELECT_10: { 6392 struct scsi_mode_header_10 *mh10; 6393 6394 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6395 bd_len = scsi_2btoul(mh10->blk_desc_len); 6396 break; 6397 } 6398 default: 6399 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6400 break; 6401 } 6402 6403 if (param_len < (header_size + bd_len)) { 6404 free(ctsio->kern_data_ptr, M_CTL); 6405 ctl_set_param_len_error(ctsio); 6406 ctl_done((union ctl_io *)ctsio); 6407 return (CTL_RETVAL_COMPLETE); 6408 } 6409 6410 /* 6411 * Set the IO_CONT flag, so that if this I/O gets passed to 6412 * ctl_config_write_done(), it'll get passed back to 6413 * ctl_do_mode_select() for further processing, or completion if 6414 * we're all done. 6415 */ 6416 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6417 ctsio->io_cont = ctl_do_mode_select; 6418 6419 modepage_info = (union ctl_modepage_info *) 6420 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6421 6422 memset(modepage_info, 0, sizeof(*modepage_info)); 6423 6424 len_left = param_len - header_size - bd_len; 6425 len_used = header_size + bd_len; 6426 6427 modepage_info->header.len_left = len_left; 6428 modepage_info->header.len_used = len_used; 6429 6430 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6431 } 6432 6433 int 6434 ctl_mode_sense(struct ctl_scsiio *ctsio) 6435 { 6436 struct ctl_lun *lun; 6437 int pc, page_code, dbd, llba, subpage; 6438 int alloc_len, page_len, header_len, total_len; 6439 struct scsi_mode_block_descr *block_desc; 6440 struct ctl_page_index *page_index; 6441 int control_dev; 6442 6443 dbd = 0; 6444 llba = 0; 6445 block_desc = NULL; 6446 page_index = NULL; 6447 6448 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6449 6450 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6451 6452 if (lun->be_lun->lun_type != T_DIRECT) 6453 control_dev = 1; 6454 else 6455 control_dev = 0; 6456 6457 switch (ctsio->cdb[0]) { 6458 case MODE_SENSE_6: { 6459 struct scsi_mode_sense_6 *cdb; 6460 6461 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6462 6463 header_len = sizeof(struct scsi_mode_hdr_6); 6464 if (cdb->byte2 & SMS_DBD) 6465 dbd = 1; 6466 else 6467 header_len += sizeof(struct scsi_mode_block_descr); 6468 6469 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6470 page_code = cdb->page & SMS_PAGE_CODE; 6471 subpage = cdb->subpage; 6472 alloc_len = cdb->length; 6473 break; 6474 } 6475 case MODE_SENSE_10: { 6476 struct scsi_mode_sense_10 *cdb; 6477 6478 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6479 6480 header_len = sizeof(struct scsi_mode_hdr_10); 6481 6482 if (cdb->byte2 & SMS_DBD) 6483 dbd = 1; 6484 else 6485 header_len += sizeof(struct scsi_mode_block_descr); 6486 if (cdb->byte2 & SMS10_LLBAA) 6487 llba = 1; 6488 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6489 page_code = cdb->page & SMS_PAGE_CODE; 6490 subpage = cdb->subpage; 6491 alloc_len = scsi_2btoul(cdb->length); 6492 break; 6493 } 6494 default: 6495 ctl_set_invalid_opcode(ctsio); 6496 ctl_done((union ctl_io *)ctsio); 6497 return (CTL_RETVAL_COMPLETE); 6498 break; /* NOTREACHED */ 6499 } 6500 6501 /* 6502 * We have to make a first pass through to calculate the size of 6503 * the pages that match the user's query. Then we allocate enough 6504 * memory to hold it, and actually copy the data into the buffer. 6505 */ 6506 switch (page_code) { 6507 case SMS_ALL_PAGES_PAGE: { 6508 int i; 6509 6510 page_len = 0; 6511 6512 /* 6513 * At the moment, values other than 0 and 0xff here are 6514 * reserved according to SPC-3. 6515 */ 6516 if ((subpage != SMS_SUBPAGE_PAGE_0) 6517 && (subpage != SMS_SUBPAGE_ALL)) { 6518 ctl_set_invalid_field(ctsio, 6519 /*sks_valid*/ 1, 6520 /*command*/ 1, 6521 /*field*/ 3, 6522 /*bit_valid*/ 0, 6523 /*bit*/ 0); 6524 ctl_done((union ctl_io *)ctsio); 6525 return (CTL_RETVAL_COMPLETE); 6526 } 6527 6528 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6529 if ((control_dev != 0) 6530 && (lun->mode_pages.index[i].page_flags & 6531 CTL_PAGE_FLAG_DISK_ONLY)) 6532 continue; 6533 6534 /* 6535 * We don't use this subpage if the user didn't 6536 * request all subpages. 6537 */ 6538 if ((lun->mode_pages.index[i].subpage != 0) 6539 && (subpage == SMS_SUBPAGE_PAGE_0)) 6540 continue; 6541 6542 #if 0 6543 printf("found page %#x len %d\n", 6544 lun->mode_pages.index[i].page_code & 6545 SMPH_PC_MASK, 6546 lun->mode_pages.index[i].page_len); 6547 #endif 6548 page_len += lun->mode_pages.index[i].page_len; 6549 } 6550 break; 6551 } 6552 default: { 6553 int i; 6554 6555 page_len = 0; 6556 6557 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6558 /* Look for the right page code */ 6559 if ((lun->mode_pages.index[i].page_code & 6560 SMPH_PC_MASK) != page_code) 6561 continue; 6562 6563 /* Look for the right subpage or the subpage wildcard*/ 6564 if ((lun->mode_pages.index[i].subpage != subpage) 6565 && (subpage != SMS_SUBPAGE_ALL)) 6566 continue; 6567 6568 /* Make sure the page is supported for this dev type */ 6569 if ((control_dev != 0) 6570 && (lun->mode_pages.index[i].page_flags & 6571 CTL_PAGE_FLAG_DISK_ONLY)) 6572 continue; 6573 6574 #if 0 6575 printf("found page %#x len %d\n", 6576 lun->mode_pages.index[i].page_code & 6577 SMPH_PC_MASK, 6578 lun->mode_pages.index[i].page_len); 6579 #endif 6580 6581 page_len += lun->mode_pages.index[i].page_len; 6582 } 6583 6584 if (page_len == 0) { 6585 ctl_set_invalid_field(ctsio, 6586 /*sks_valid*/ 1, 6587 /*command*/ 1, 6588 /*field*/ 2, 6589 /*bit_valid*/ 1, 6590 /*bit*/ 5); 6591 ctl_done((union ctl_io *)ctsio); 6592 return (CTL_RETVAL_COMPLETE); 6593 } 6594 break; 6595 } 6596 } 6597 6598 total_len = header_len + page_len; 6599 #if 0 6600 printf("header_len = %d, page_len = %d, total_len = %d\n", 6601 header_len, page_len, total_len); 6602 #endif 6603 6604 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 6605 if (ctsio->kern_data_ptr == NULL) { 6606 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6607 ctsio->scsi_status = SCSI_STATUS_BUSY; 6608 ctl_done((union ctl_io *)ctsio); 6609 return (CTL_RETVAL_COMPLETE); 6610 } 6611 ctsio->kern_sg_entries = 0; 6612 ctsio->kern_data_resid = 0; 6613 ctsio->kern_rel_offset = 0; 6614 if (total_len < alloc_len) { 6615 ctsio->residual = alloc_len - total_len; 6616 ctsio->kern_data_len = total_len; 6617 ctsio->kern_total_len = total_len; 6618 } else { 6619 ctsio->residual = 0; 6620 ctsio->kern_data_len = alloc_len; 6621 ctsio->kern_total_len = alloc_len; 6622 } 6623 memset(ctsio->kern_data_ptr, 0, total_len); 6624 6625 switch (ctsio->cdb[0]) { 6626 case MODE_SENSE_6: { 6627 struct scsi_mode_hdr_6 *header; 6628 6629 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6630 6631 header->datalen = ctl_min(total_len - 1, 254); 6632 6633 if (dbd) 6634 header->block_descr_len = 0; 6635 else 6636 header->block_descr_len = 6637 sizeof(struct scsi_mode_block_descr); 6638 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6639 break; 6640 } 6641 case MODE_SENSE_10: { 6642 struct scsi_mode_hdr_10 *header; 6643 int datalen; 6644 6645 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6646 6647 datalen = ctl_min(total_len - 2, 65533); 6648 scsi_ulto2b(datalen, header->datalen); 6649 if (dbd) 6650 scsi_ulto2b(0, header->block_descr_len); 6651 else 6652 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6653 header->block_descr_len); 6654 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6655 break; 6656 } 6657 default: 6658 panic("invalid CDB type %#x", ctsio->cdb[0]); 6659 break; /* NOTREACHED */ 6660 } 6661 6662 /* 6663 * If we've got a disk, use its blocksize in the block 6664 * descriptor. Otherwise, just set it to 0. 6665 */ 6666 if (dbd == 0) { 6667 if (control_dev != 0) 6668 scsi_ulto3b(lun->be_lun->blocksize, 6669 block_desc->block_len); 6670 else 6671 scsi_ulto3b(0, block_desc->block_len); 6672 } 6673 6674 switch (page_code) { 6675 case SMS_ALL_PAGES_PAGE: { 6676 int i, data_used; 6677 6678 data_used = header_len; 6679 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6680 struct ctl_page_index *page_index; 6681 6682 page_index = &lun->mode_pages.index[i]; 6683 6684 if ((control_dev != 0) 6685 && (page_index->page_flags & 6686 CTL_PAGE_FLAG_DISK_ONLY)) 6687 continue; 6688 6689 /* 6690 * We don't use this subpage if the user didn't 6691 * request all subpages. We already checked (above) 6692 * to make sure the user only specified a subpage 6693 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6694 */ 6695 if ((page_index->subpage != 0) 6696 && (subpage == SMS_SUBPAGE_PAGE_0)) 6697 continue; 6698 6699 /* 6700 * Call the handler, if it exists, to update the 6701 * page to the latest values. 6702 */ 6703 if (page_index->sense_handler != NULL) 6704 page_index->sense_handler(ctsio, page_index,pc); 6705 6706 memcpy(ctsio->kern_data_ptr + data_used, 6707 page_index->page_data + 6708 (page_index->page_len * pc), 6709 page_index->page_len); 6710 data_used += page_index->page_len; 6711 } 6712 break; 6713 } 6714 default: { 6715 int i, data_used; 6716 6717 data_used = header_len; 6718 6719 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6720 struct ctl_page_index *page_index; 6721 6722 page_index = &lun->mode_pages.index[i]; 6723 6724 /* Look for the right page code */ 6725 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6726 continue; 6727 6728 /* Look for the right subpage or the subpage wildcard*/ 6729 if ((page_index->subpage != subpage) 6730 && (subpage != SMS_SUBPAGE_ALL)) 6731 continue; 6732 6733 /* Make sure the page is supported for this dev type */ 6734 if ((control_dev != 0) 6735 && (page_index->page_flags & 6736 CTL_PAGE_FLAG_DISK_ONLY)) 6737 continue; 6738 6739 /* 6740 * Call the handler, if it exists, to update the 6741 * page to the latest values. 6742 */ 6743 if (page_index->sense_handler != NULL) 6744 page_index->sense_handler(ctsio, page_index,pc); 6745 6746 memcpy(ctsio->kern_data_ptr + data_used, 6747 page_index->page_data + 6748 (page_index->page_len * pc), 6749 page_index->page_len); 6750 data_used += page_index->page_len; 6751 } 6752 break; 6753 } 6754 } 6755 6756 ctsio->scsi_status = SCSI_STATUS_OK; 6757 6758 ctsio->be_move_done = ctl_config_move_done; 6759 ctl_datamove((union ctl_io *)ctsio); 6760 6761 return (CTL_RETVAL_COMPLETE); 6762 } 6763 6764 int 6765 ctl_read_capacity(struct ctl_scsiio *ctsio) 6766 { 6767 struct scsi_read_capacity *cdb; 6768 struct scsi_read_capacity_data *data; 6769 struct ctl_lun *lun; 6770 uint32_t lba; 6771 6772 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6773 6774 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6775 6776 lba = scsi_4btoul(cdb->addr); 6777 if (((cdb->pmi & SRC_PMI) == 0) 6778 && (lba != 0)) { 6779 ctl_set_invalid_field(/*ctsio*/ ctsio, 6780 /*sks_valid*/ 1, 6781 /*command*/ 1, 6782 /*field*/ 2, 6783 /*bit_valid*/ 0, 6784 /*bit*/ 0); 6785 ctl_done((union ctl_io *)ctsio); 6786 return (CTL_RETVAL_COMPLETE); 6787 } 6788 6789 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6790 6791 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK); 6792 if (ctsio->kern_data_ptr == NULL) { 6793 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6794 ctsio->scsi_status = SCSI_STATUS_BUSY; 6795 ctl_done((union ctl_io *)ctsio); 6796 return (CTL_RETVAL_COMPLETE); 6797 } 6798 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6799 ctsio->residual = 0; 6800 ctsio->kern_data_len = sizeof(*data); 6801 ctsio->kern_total_len = sizeof(*data); 6802 ctsio->kern_data_resid = 0; 6803 ctsio->kern_rel_offset = 0; 6804 ctsio->kern_sg_entries = 0; 6805 6806 memset(data, 0, sizeof(*data)); 6807 6808 /* 6809 * If the maximum LBA is greater than 0xfffffffe, the user must 6810 * issue a SERVICE ACTION IN (16) command, with the read capacity 6811 * serivce action set. 6812 */ 6813 if (lun->be_lun->maxlba > 0xfffffffe) 6814 scsi_ulto4b(0xffffffff, data->addr); 6815 else 6816 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6817 6818 /* 6819 * XXX KDM this may not be 512 bytes... 6820 */ 6821 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6822 6823 ctsio->scsi_status = SCSI_STATUS_OK; 6824 6825 ctsio->be_move_done = ctl_config_move_done; 6826 ctl_datamove((union ctl_io *)ctsio); 6827 6828 return (CTL_RETVAL_COMPLETE); 6829 } 6830 6831 static int 6832 ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6833 { 6834 struct scsi_read_capacity_16 *cdb; 6835 struct scsi_read_capacity_data_long *data; 6836 struct ctl_lun *lun; 6837 uint64_t lba; 6838 uint32_t alloc_len; 6839 6840 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6841 6842 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6843 6844 alloc_len = scsi_4btoul(cdb->alloc_len); 6845 lba = scsi_8btou64(cdb->addr); 6846 6847 if ((cdb->reladr & SRC16_PMI) 6848 && (lba != 0)) { 6849 ctl_set_invalid_field(/*ctsio*/ ctsio, 6850 /*sks_valid*/ 1, 6851 /*command*/ 1, 6852 /*field*/ 2, 6853 /*bit_valid*/ 0, 6854 /*bit*/ 0); 6855 ctl_done((union ctl_io *)ctsio); 6856 return (CTL_RETVAL_COMPLETE); 6857 } 6858 6859 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6860 6861 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK); 6862 if (ctsio->kern_data_ptr == NULL) { 6863 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6864 ctsio->scsi_status = SCSI_STATUS_BUSY; 6865 ctl_done((union ctl_io *)ctsio); 6866 return (CTL_RETVAL_COMPLETE); 6867 } 6868 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6869 6870 if (sizeof(*data) < alloc_len) { 6871 ctsio->residual = alloc_len - sizeof(*data); 6872 ctsio->kern_data_len = sizeof(*data); 6873 ctsio->kern_total_len = sizeof(*data); 6874 } else { 6875 ctsio->residual = 0; 6876 ctsio->kern_data_len = alloc_len; 6877 ctsio->kern_total_len = alloc_len; 6878 } 6879 ctsio->kern_data_resid = 0; 6880 ctsio->kern_rel_offset = 0; 6881 ctsio->kern_sg_entries = 0; 6882 6883 memset(data, 0, sizeof(*data)); 6884 6885 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 6886 /* XXX KDM this may not be 512 bytes... */ 6887 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6888 6889 ctsio->scsi_status = SCSI_STATUS_OK; 6890 6891 ctsio->be_move_done = ctl_config_move_done; 6892 ctl_datamove((union ctl_io *)ctsio); 6893 6894 return (CTL_RETVAL_COMPLETE); 6895 } 6896 6897 int 6898 ctl_service_action_in(struct ctl_scsiio *ctsio) 6899 { 6900 struct scsi_service_action_in *cdb; 6901 int retval; 6902 6903 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 6904 6905 cdb = (struct scsi_service_action_in *)ctsio->cdb; 6906 6907 retval = CTL_RETVAL_COMPLETE; 6908 6909 switch (cdb->service_action) { 6910 case SRC16_SERVICE_ACTION: 6911 retval = ctl_read_capacity_16(ctsio); 6912 break; 6913 default: 6914 ctl_set_invalid_field(/*ctsio*/ ctsio, 6915 /*sks_valid*/ 1, 6916 /*command*/ 1, 6917 /*field*/ 1, 6918 /*bit_valid*/ 1, 6919 /*bit*/ 4); 6920 ctl_done((union ctl_io *)ctsio); 6921 break; 6922 } 6923 6924 return (retval); 6925 } 6926 6927 int 6928 ctl_maintenance_in(struct ctl_scsiio *ctsio) 6929 { 6930 struct scsi_maintenance_in *cdb; 6931 int retval; 6932 int alloc_len, total_len = 0; 6933 int num_target_port_groups; 6934 struct ctl_lun *lun; 6935 struct ctl_softc *softc; 6936 struct scsi_target_group_data *rtg_ptr; 6937 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 6938 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 6939 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 6940 6941 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 6942 6943 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 6944 softc = control_softc; 6945 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6946 6947 retval = CTL_RETVAL_COMPLETE; 6948 mtx_lock(&softc->ctl_lock); 6949 6950 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 6951 ctl_set_invalid_field(/*ctsio*/ ctsio, 6952 /*sks_valid*/ 1, 6953 /*command*/ 1, 6954 /*field*/ 1, 6955 /*bit_valid*/ 1, 6956 /*bit*/ 4); 6957 ctl_done((union ctl_io *)ctsio); 6958 return(retval); 6959 } 6960 6961 if (ctl_is_single) 6962 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 6963 else 6964 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 6965 6966 total_len = sizeof(struct scsi_target_group_data) + 6967 sizeof(struct scsi_target_port_group_descriptor) * 6968 num_target_port_groups + 6969 sizeof(struct scsi_target_port_descriptor) * 6970 NUM_PORTS_PER_GRP * num_target_port_groups; 6971 6972 alloc_len = scsi_4btoul(cdb->length); 6973 6974 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 6975 if (ctsio->kern_data_ptr == NULL) { 6976 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6977 ctsio->scsi_status = SCSI_STATUS_BUSY; 6978 ctl_done((union ctl_io *)ctsio); 6979 return (CTL_RETVAL_COMPLETE); 6980 } 6981 memset(ctsio->kern_data_ptr, 0, total_len); 6982 6983 ctsio->kern_sg_entries = 0; 6984 6985 if (total_len < alloc_len) { 6986 ctsio->residual = alloc_len - total_len; 6987 ctsio->kern_data_len = total_len; 6988 ctsio->kern_total_len = total_len; 6989 } else { 6990 ctsio->residual = 0; 6991 ctsio->kern_data_len = alloc_len; 6992 ctsio->kern_total_len = alloc_len; 6993 } 6994 ctsio->kern_data_resid = 0; 6995 ctsio->kern_rel_offset = 0; 6996 6997 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 6998 6999 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7000 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7001 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7002 &tp_desc_ptr1_1->desc_list[0]; 7003 7004 7005 7006 if (ctl_is_single == 0) { 7007 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7008 &tp_desc_ptr1_2->desc_list[0]; 7009 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7010 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7011 &tp_desc_ptr2_1->desc_list[0]; 7012 } else { 7013 tpg_desc_ptr2 = NULL; 7014 tp_desc_ptr2_1 = NULL; 7015 tp_desc_ptr2_2 = NULL; 7016 } 7017 7018 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7019 if (ctl_is_single == 0) { 7020 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7021 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7022 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7023 tpg_desc_ptr2->pref_state = 7024 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7025 } else { 7026 tpg_desc_ptr1->pref_state = 7027 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7028 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7029 } 7030 } else { 7031 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7032 tpg_desc_ptr1->pref_state = 7033 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7034 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7035 } else { 7036 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7037 tpg_desc_ptr2->pref_state = 7038 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7039 } 7040 } 7041 } else { 7042 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7043 } 7044 tpg_desc_ptr1->support = 0; 7045 tpg_desc_ptr1->target_port_group[1] = 1; 7046 tpg_desc_ptr1->status = TPG_IMPLICIT; 7047 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7048 7049 if (ctl_is_single == 0) { 7050 tpg_desc_ptr2->support = 0; 7051 tpg_desc_ptr2->target_port_group[1] = 2; 7052 tpg_desc_ptr2->status = TPG_IMPLICIT; 7053 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7054 7055 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7056 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7057 7058 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7059 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7060 } else { 7061 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7062 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7063 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7064 } else { 7065 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7066 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7067 } 7068 } 7069 7070 mtx_unlock(&softc->ctl_lock); 7071 7072 ctsio->be_move_done = ctl_config_move_done; 7073 7074 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7075 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7076 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7077 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7078 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7079 7080 ctl_datamove((union ctl_io *)ctsio); 7081 return(retval); 7082 } 7083 7084 int 7085 ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7086 { 7087 struct scsi_per_res_in *cdb; 7088 int alloc_len, total_len = 0; 7089 /* struct scsi_per_res_in_rsrv in_data; */ 7090 struct ctl_lun *lun; 7091 struct ctl_softc *softc; 7092 7093 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7094 7095 softc = control_softc; 7096 7097 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7098 7099 alloc_len = scsi_2btoul(cdb->length); 7100 7101 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7102 7103 retry: 7104 mtx_lock(&softc->ctl_lock); 7105 switch (cdb->action) { 7106 case SPRI_RK: /* read keys */ 7107 total_len = sizeof(struct scsi_per_res_in_keys) + 7108 lun->pr_key_count * 7109 sizeof(struct scsi_per_res_key); 7110 break; 7111 case SPRI_RR: /* read reservation */ 7112 if (lun->flags & CTL_LUN_PR_RESERVED) 7113 total_len = sizeof(struct scsi_per_res_in_rsrv); 7114 else 7115 total_len = sizeof(struct scsi_per_res_in_header); 7116 break; 7117 case SPRI_RC: /* report capabilities */ 7118 total_len = sizeof(struct scsi_per_res_cap); 7119 break; 7120 case SPRI_RS: /* read full status */ 7121 default: 7122 mtx_unlock(&softc->ctl_lock); 7123 ctl_set_invalid_field(ctsio, 7124 /*sks_valid*/ 1, 7125 /*command*/ 1, 7126 /*field*/ 1, 7127 /*bit_valid*/ 1, 7128 /*bit*/ 0); 7129 ctl_done((union ctl_io *)ctsio); 7130 return (CTL_RETVAL_COMPLETE); 7131 break; /* NOTREACHED */ 7132 } 7133 mtx_unlock(&softc->ctl_lock); 7134 7135 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 7136 if (ctsio->kern_data_ptr == NULL) { 7137 ctsio->io_hdr.status = CTL_SCSI_ERROR; 7138 ctsio->scsi_status = SCSI_STATUS_BUSY; 7139 ctl_done((union ctl_io *)ctsio); 7140 return (CTL_RETVAL_COMPLETE); 7141 } 7142 7143 if (total_len < alloc_len) { 7144 ctsio->residual = alloc_len - total_len; 7145 ctsio->kern_data_len = total_len; 7146 ctsio->kern_total_len = total_len; 7147 } else { 7148 ctsio->residual = 0; 7149 ctsio->kern_data_len = alloc_len; 7150 ctsio->kern_total_len = alloc_len; 7151 } 7152 7153 ctsio->kern_data_resid = 0; 7154 ctsio->kern_rel_offset = 0; 7155 ctsio->kern_sg_entries = 0; 7156 7157 memset(ctsio->kern_data_ptr, 0, total_len); 7158 7159 mtx_lock(&softc->ctl_lock); 7160 switch (cdb->action) { 7161 case SPRI_RK: { // read keys 7162 struct scsi_per_res_in_keys *res_keys; 7163 int i, key_count; 7164 7165 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7166 7167 /* 7168 * We had to drop the lock to allocate our buffer, which 7169 * leaves time for someone to come in with another 7170 * persistent reservation. (That is unlikely, though, 7171 * since this should be the only persistent reservation 7172 * command active right now.) 7173 */ 7174 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7175 (lun->pr_key_count * 7176 sizeof(struct scsi_per_res_key)))){ 7177 mtx_unlock(&softc->ctl_lock); 7178 free(ctsio->kern_data_ptr, M_CTL); 7179 printf("%s: reservation length changed, retrying\n", 7180 __func__); 7181 goto retry; 7182 } 7183 7184 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7185 7186 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7187 lun->pr_key_count, res_keys->header.length); 7188 7189 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7190 if (!lun->per_res[i].registered) 7191 continue; 7192 7193 /* 7194 * We used lun->pr_key_count to calculate the 7195 * size to allocate. If it turns out the number of 7196 * initiators with the registered flag set is 7197 * larger than that (i.e. they haven't been kept in 7198 * sync), we've got a problem. 7199 */ 7200 if (key_count >= lun->pr_key_count) { 7201 #ifdef NEEDTOPORT 7202 csevent_log(CSC_CTL | CSC_SHELF_SW | 7203 CTL_PR_ERROR, 7204 csevent_LogType_Fault, 7205 csevent_AlertLevel_Yellow, 7206 csevent_FRU_ShelfController, 7207 csevent_FRU_Firmware, 7208 csevent_FRU_Unknown, 7209 "registered keys %d >= key " 7210 "count %d", key_count, 7211 lun->pr_key_count); 7212 #endif 7213 key_count++; 7214 continue; 7215 } 7216 memcpy(res_keys->keys[key_count].key, 7217 lun->per_res[i].res_key.key, 7218 ctl_min(sizeof(res_keys->keys[key_count].key), 7219 sizeof(lun->per_res[i].res_key))); 7220 key_count++; 7221 } 7222 break; 7223 } 7224 case SPRI_RR: { // read reservation 7225 struct scsi_per_res_in_rsrv *res; 7226 int tmp_len, header_only; 7227 7228 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7229 7230 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7231 7232 if (lun->flags & CTL_LUN_PR_RESERVED) 7233 { 7234 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7235 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7236 res->header.length); 7237 header_only = 0; 7238 } else { 7239 tmp_len = sizeof(struct scsi_per_res_in_header); 7240 scsi_ulto4b(0, res->header.length); 7241 header_only = 1; 7242 } 7243 7244 /* 7245 * We had to drop the lock to allocate our buffer, which 7246 * leaves time for someone to come in with another 7247 * persistent reservation. (That is unlikely, though, 7248 * since this should be the only persistent reservation 7249 * command active right now.) 7250 */ 7251 if (tmp_len != total_len) { 7252 mtx_unlock(&softc->ctl_lock); 7253 free(ctsio->kern_data_ptr, M_CTL); 7254 printf("%s: reservation status changed, retrying\n", 7255 __func__); 7256 goto retry; 7257 } 7258 7259 /* 7260 * No reservation held, so we're done. 7261 */ 7262 if (header_only != 0) 7263 break; 7264 7265 /* 7266 * If the registration is an All Registrants type, the key 7267 * is 0, since it doesn't really matter. 7268 */ 7269 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7270 memcpy(res->data.reservation, 7271 &lun->per_res[lun->pr_res_idx].res_key, 7272 sizeof(struct scsi_per_res_key)); 7273 } 7274 res->data.scopetype = lun->res_type; 7275 break; 7276 } 7277 case SPRI_RC: //report capabilities 7278 { 7279 struct scsi_per_res_cap *res_cap; 7280 uint16_t type_mask; 7281 7282 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7283 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7284 res_cap->flags2 |= SPRI_TMV; 7285 type_mask = SPRI_TM_WR_EX_AR | 7286 SPRI_TM_EX_AC_RO | 7287 SPRI_TM_WR_EX_RO | 7288 SPRI_TM_EX_AC | 7289 SPRI_TM_WR_EX | 7290 SPRI_TM_EX_AC_AR; 7291 scsi_ulto2b(type_mask, res_cap->type_mask); 7292 break; 7293 } 7294 case SPRI_RS: //read full status 7295 default: 7296 /* 7297 * This is a bug, because we just checked for this above, 7298 * and should have returned an error. 7299 */ 7300 panic("Invalid PR type %x", cdb->action); 7301 break; /* NOTREACHED */ 7302 } 7303 mtx_unlock(&softc->ctl_lock); 7304 7305 ctsio->be_move_done = ctl_config_move_done; 7306 7307 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7308 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7309 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7310 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7311 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7312 7313 ctl_datamove((union ctl_io *)ctsio); 7314 7315 return (CTL_RETVAL_COMPLETE); 7316 } 7317 7318 /* 7319 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7320 * it should return. 7321 */ 7322 static int 7323 ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7324 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7325 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7326 struct scsi_per_res_out_parms* param) 7327 { 7328 union ctl_ha_msg persis_io; 7329 int retval, i; 7330 int isc_retval; 7331 7332 retval = 0; 7333 7334 if (sa_res_key == 0) { 7335 mtx_lock(&softc->ctl_lock); 7336 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7337 /* validate scope and type */ 7338 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7339 SPR_LU_SCOPE) { 7340 mtx_unlock(&softc->ctl_lock); 7341 ctl_set_invalid_field(/*ctsio*/ ctsio, 7342 /*sks_valid*/ 1, 7343 /*command*/ 1, 7344 /*field*/ 2, 7345 /*bit_valid*/ 1, 7346 /*bit*/ 4); 7347 ctl_done((union ctl_io *)ctsio); 7348 return (1); 7349 } 7350 7351 if (type>8 || type==2 || type==4 || type==0) { 7352 mtx_unlock(&softc->ctl_lock); 7353 ctl_set_invalid_field(/*ctsio*/ ctsio, 7354 /*sks_valid*/ 1, 7355 /*command*/ 1, 7356 /*field*/ 2, 7357 /*bit_valid*/ 1, 7358 /*bit*/ 0); 7359 ctl_done((union ctl_io *)ctsio); 7360 return (1); 7361 } 7362 7363 /* temporarily unregister this nexus */ 7364 lun->per_res[residx].registered = 0; 7365 7366 /* 7367 * Unregister everybody else and build UA for 7368 * them 7369 */ 7370 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7371 if (lun->per_res[i].registered == 0) 7372 continue; 7373 7374 if (!persis_offset 7375 && i <CTL_MAX_INITIATORS) 7376 lun->pending_sense[i].ua_pending |= 7377 CTL_UA_REG_PREEMPT; 7378 else if (persis_offset 7379 && i >= persis_offset) 7380 lun->pending_sense[i-persis_offset 7381 ].ua_pending |= 7382 CTL_UA_REG_PREEMPT; 7383 lun->per_res[i].registered = 0; 7384 memset(&lun->per_res[i].res_key, 0, 7385 sizeof(struct scsi_per_res_key)); 7386 } 7387 lun->per_res[residx].registered = 1; 7388 lun->pr_key_count = 1; 7389 lun->res_type = type; 7390 if (lun->res_type != SPR_TYPE_WR_EX_AR 7391 && lun->res_type != SPR_TYPE_EX_AC_AR) 7392 lun->pr_res_idx = residx; 7393 7394 mtx_unlock(&softc->ctl_lock); 7395 /* send msg to other side */ 7396 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7397 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7398 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7399 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7400 persis_io.pr.pr_info.res_type = type; 7401 memcpy(persis_io.pr.pr_info.sa_res_key, 7402 param->serv_act_res_key, 7403 sizeof(param->serv_act_res_key)); 7404 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7405 &persis_io, sizeof(persis_io), 0)) > 7406 CTL_HA_STATUS_SUCCESS) { 7407 printf("CTL:Persis Out error returned " 7408 "from ctl_ha_msg_send %d\n", 7409 isc_retval); 7410 } 7411 } else { 7412 /* not all registrants */ 7413 mtx_unlock(&softc->ctl_lock); 7414 free(ctsio->kern_data_ptr, M_CTL); 7415 ctl_set_invalid_field(ctsio, 7416 /*sks_valid*/ 1, 7417 /*command*/ 0, 7418 /*field*/ 8, 7419 /*bit_valid*/ 0, 7420 /*bit*/ 0); 7421 ctl_done((union ctl_io *)ctsio); 7422 return (1); 7423 } 7424 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7425 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7426 int found = 0; 7427 7428 mtx_lock(&softc->ctl_lock); 7429 if (res_key == sa_res_key) { 7430 /* special case */ 7431 /* 7432 * The spec implies this is not good but doesn't 7433 * say what to do. There are two choices either 7434 * generate a res conflict or check condition 7435 * with illegal field in parameter data. Since 7436 * that is what is done when the sa_res_key is 7437 * zero I'll take that approach since this has 7438 * to do with the sa_res_key. 7439 */ 7440 mtx_unlock(&softc->ctl_lock); 7441 free(ctsio->kern_data_ptr, M_CTL); 7442 ctl_set_invalid_field(ctsio, 7443 /*sks_valid*/ 1, 7444 /*command*/ 0, 7445 /*field*/ 8, 7446 /*bit_valid*/ 0, 7447 /*bit*/ 0); 7448 ctl_done((union ctl_io *)ctsio); 7449 return (1); 7450 } 7451 7452 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7453 if (lun->per_res[i].registered 7454 && memcmp(param->serv_act_res_key, 7455 lun->per_res[i].res_key.key, 7456 sizeof(struct scsi_per_res_key)) != 0) 7457 continue; 7458 7459 found = 1; 7460 lun->per_res[i].registered = 0; 7461 memset(&lun->per_res[i].res_key, 0, 7462 sizeof(struct scsi_per_res_key)); 7463 lun->pr_key_count--; 7464 7465 if (!persis_offset 7466 && i < CTL_MAX_INITIATORS) 7467 lun->pending_sense[i].ua_pending |= 7468 CTL_UA_REG_PREEMPT; 7469 else if (persis_offset 7470 && i >= persis_offset) 7471 lun->pending_sense[i-persis_offset].ua_pending|= 7472 CTL_UA_REG_PREEMPT; 7473 } 7474 mtx_unlock(&softc->ctl_lock); 7475 if (!found) { 7476 free(ctsio->kern_data_ptr, M_CTL); 7477 ctl_set_reservation_conflict(ctsio); 7478 ctl_done((union ctl_io *)ctsio); 7479 return (CTL_RETVAL_COMPLETE); 7480 } 7481 /* send msg to other side */ 7482 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7483 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7484 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7485 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7486 persis_io.pr.pr_info.res_type = type; 7487 memcpy(persis_io.pr.pr_info.sa_res_key, 7488 param->serv_act_res_key, 7489 sizeof(param->serv_act_res_key)); 7490 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7491 &persis_io, sizeof(persis_io), 0)) > 7492 CTL_HA_STATUS_SUCCESS) { 7493 printf("CTL:Persis Out error returned from " 7494 "ctl_ha_msg_send %d\n", isc_retval); 7495 } 7496 } else { 7497 /* Reserved but not all registrants */ 7498 /* sa_res_key is res holder */ 7499 if (memcmp(param->serv_act_res_key, 7500 lun->per_res[lun->pr_res_idx].res_key.key, 7501 sizeof(struct scsi_per_res_key)) == 0) { 7502 /* validate scope and type */ 7503 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7504 SPR_LU_SCOPE) { 7505 ctl_set_invalid_field(/*ctsio*/ ctsio, 7506 /*sks_valid*/ 1, 7507 /*command*/ 1, 7508 /*field*/ 2, 7509 /*bit_valid*/ 1, 7510 /*bit*/ 4); 7511 ctl_done((union ctl_io *)ctsio); 7512 return (1); 7513 } 7514 7515 if (type>8 || type==2 || type==4 || type==0) { 7516 ctl_set_invalid_field(/*ctsio*/ ctsio, 7517 /*sks_valid*/ 1, 7518 /*command*/ 1, 7519 /*field*/ 2, 7520 /*bit_valid*/ 1, 7521 /*bit*/ 0); 7522 ctl_done((union ctl_io *)ctsio); 7523 return (1); 7524 } 7525 7526 /* 7527 * Do the following: 7528 * if sa_res_key != res_key remove all 7529 * registrants w/sa_res_key and generate UA 7530 * for these registrants(Registrations 7531 * Preempted) if it wasn't an exclusive 7532 * reservation generate UA(Reservations 7533 * Preempted) for all other registered nexuses 7534 * if the type has changed. Establish the new 7535 * reservation and holder. If res_key and 7536 * sa_res_key are the same do the above 7537 * except don't unregister the res holder. 7538 */ 7539 7540 /* 7541 * Temporarily unregister so it won't get 7542 * removed or UA generated 7543 */ 7544 lun->per_res[residx].registered = 0; 7545 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7546 if (lun->per_res[i].registered == 0) 7547 continue; 7548 7549 if (memcmp(param->serv_act_res_key, 7550 lun->per_res[i].res_key.key, 7551 sizeof(struct scsi_per_res_key)) == 0) { 7552 lun->per_res[i].registered = 0; 7553 memset(&lun->per_res[i].res_key, 7554 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 7561 ].ua_pending |= 7562 CTL_UA_REG_PREEMPT; 7563 else if (persis_offset 7564 && i >= persis_offset) 7565 lun->pending_sense[ 7566 i-persis_offset].ua_pending |= 7567 CTL_UA_REG_PREEMPT; 7568 } else if (type != lun->res_type 7569 && (lun->res_type == SPR_TYPE_WR_EX_RO 7570 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7571 if (!persis_offset 7572 && i < CTL_MAX_INITIATORS) 7573 lun->pending_sense[i 7574 ].ua_pending |= 7575 CTL_UA_RES_RELEASE; 7576 else if (persis_offset 7577 && i >= persis_offset) 7578 lun->pending_sense[ 7579 i-persis_offset 7580 ].ua_pending |= 7581 CTL_UA_RES_RELEASE; 7582 } 7583 } 7584 lun->per_res[residx].registered = 1; 7585 lun->res_type = type; 7586 if (lun->res_type != SPR_TYPE_WR_EX_AR 7587 && lun->res_type != SPR_TYPE_EX_AC_AR) 7588 lun->pr_res_idx = residx; 7589 else 7590 lun->pr_res_idx = 7591 CTL_PR_ALL_REGISTRANTS; 7592 7593 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7594 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7595 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7596 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7597 persis_io.pr.pr_info.res_type = type; 7598 memcpy(persis_io.pr.pr_info.sa_res_key, 7599 param->serv_act_res_key, 7600 sizeof(param->serv_act_res_key)); 7601 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7602 &persis_io, sizeof(persis_io), 0)) > 7603 CTL_HA_STATUS_SUCCESS) { 7604 printf("CTL:Persis Out error returned " 7605 "from ctl_ha_msg_send %d\n", 7606 isc_retval); 7607 } 7608 } else { 7609 /* 7610 * sa_res_key is not the res holder just 7611 * remove registrants 7612 */ 7613 int found=0; 7614 mtx_lock(&softc->ctl_lock); 7615 7616 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7617 if (memcmp(param->serv_act_res_key, 7618 lun->per_res[i].res_key.key, 7619 sizeof(struct scsi_per_res_key)) != 0) 7620 continue; 7621 7622 found = 1; 7623 lun->per_res[i].registered = 0; 7624 memset(&lun->per_res[i].res_key, 0, 7625 sizeof(struct scsi_per_res_key)); 7626 lun->pr_key_count--; 7627 7628 if (!persis_offset 7629 && i < CTL_MAX_INITIATORS) 7630 lun->pending_sense[i].ua_pending |= 7631 CTL_UA_REG_PREEMPT; 7632 else if (persis_offset 7633 && i >= persis_offset) 7634 lun->pending_sense[ 7635 i-persis_offset].ua_pending |= 7636 CTL_UA_REG_PREEMPT; 7637 } 7638 7639 if (!found) { 7640 mtx_unlock(&softc->ctl_lock); 7641 free(ctsio->kern_data_ptr, M_CTL); 7642 ctl_set_reservation_conflict(ctsio); 7643 ctl_done((union ctl_io *)ctsio); 7644 return (1); 7645 } 7646 mtx_unlock(&softc->ctl_lock); 7647 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7648 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7649 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7650 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7651 persis_io.pr.pr_info.res_type = type; 7652 memcpy(persis_io.pr.pr_info.sa_res_key, 7653 param->serv_act_res_key, 7654 sizeof(param->serv_act_res_key)); 7655 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7656 &persis_io, sizeof(persis_io), 0)) > 7657 CTL_HA_STATUS_SUCCESS) { 7658 printf("CTL:Persis Out error returned " 7659 "from ctl_ha_msg_send %d\n", 7660 isc_retval); 7661 } 7662 } 7663 } 7664 7665 lun->PRGeneration++; 7666 7667 return (retval); 7668 } 7669 7670 static void 7671 ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7672 { 7673 int i; 7674 7675 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7676 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7677 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7678 msg->pr.pr_info.sa_res_key, 7679 sizeof(struct scsi_per_res_key)) != 0) { 7680 uint64_t sa_res_key; 7681 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7682 7683 if (sa_res_key == 0) { 7684 /* temporarily unregister this nexus */ 7685 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7686 7687 /* 7688 * Unregister everybody else and build UA for 7689 * them 7690 */ 7691 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7692 if (lun->per_res[i].registered == 0) 7693 continue; 7694 7695 if (!persis_offset 7696 && i < CTL_MAX_INITIATORS) 7697 lun->pending_sense[i].ua_pending |= 7698 CTL_UA_REG_PREEMPT; 7699 else if (persis_offset && i >= persis_offset) 7700 lun->pending_sense[i - 7701 persis_offset].ua_pending |= 7702 CTL_UA_REG_PREEMPT; 7703 lun->per_res[i].registered = 0; 7704 memset(&lun->per_res[i].res_key, 0, 7705 sizeof(struct scsi_per_res_key)); 7706 } 7707 7708 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7709 lun->pr_key_count = 1; 7710 lun->res_type = msg->pr.pr_info.res_type; 7711 if (lun->res_type != SPR_TYPE_WR_EX_AR 7712 && lun->res_type != SPR_TYPE_EX_AC_AR) 7713 lun->pr_res_idx = msg->pr.pr_info.residx; 7714 } else { 7715 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7716 if (memcmp(msg->pr.pr_info.sa_res_key, 7717 lun->per_res[i].res_key.key, 7718 sizeof(struct scsi_per_res_key)) != 0) 7719 continue; 7720 7721 lun->per_res[i].registered = 0; 7722 memset(&lun->per_res[i].res_key, 0, 7723 sizeof(struct scsi_per_res_key)); 7724 lun->pr_key_count--; 7725 7726 if (!persis_offset 7727 && i < persis_offset) 7728 lun->pending_sense[i].ua_pending |= 7729 CTL_UA_REG_PREEMPT; 7730 else if (persis_offset 7731 && i >= persis_offset) 7732 lun->pending_sense[i - 7733 persis_offset].ua_pending |= 7734 CTL_UA_REG_PREEMPT; 7735 } 7736 } 7737 } else { 7738 /* 7739 * Temporarily unregister so it won't get removed 7740 * or UA generated 7741 */ 7742 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7743 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7744 if (lun->per_res[i].registered == 0) 7745 continue; 7746 7747 if (memcmp(msg->pr.pr_info.sa_res_key, 7748 lun->per_res[i].res_key.key, 7749 sizeof(struct scsi_per_res_key)) == 0) { 7750 lun->per_res[i].registered = 0; 7751 memset(&lun->per_res[i].res_key, 0, 7752 sizeof(struct scsi_per_res_key)); 7753 lun->pr_key_count--; 7754 if (!persis_offset 7755 && i < CTL_MAX_INITIATORS) 7756 lun->pending_sense[i].ua_pending |= 7757 CTL_UA_REG_PREEMPT; 7758 else if (persis_offset 7759 && i >= persis_offset) 7760 lun->pending_sense[i - 7761 persis_offset].ua_pending |= 7762 CTL_UA_REG_PREEMPT; 7763 } else if (msg->pr.pr_info.res_type != lun->res_type 7764 && (lun->res_type == SPR_TYPE_WR_EX_RO 7765 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7766 if (!persis_offset 7767 && i < persis_offset) 7768 lun->pending_sense[i 7769 ].ua_pending |= 7770 CTL_UA_RES_RELEASE; 7771 else if (persis_offset 7772 && i >= persis_offset) 7773 lun->pending_sense[i - 7774 persis_offset].ua_pending |= 7775 CTL_UA_RES_RELEASE; 7776 } 7777 } 7778 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7779 lun->res_type = msg->pr.pr_info.res_type; 7780 if (lun->res_type != SPR_TYPE_WR_EX_AR 7781 && lun->res_type != SPR_TYPE_EX_AC_AR) 7782 lun->pr_res_idx = msg->pr.pr_info.residx; 7783 else 7784 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7785 } 7786 lun->PRGeneration++; 7787 7788 } 7789 7790 7791 int 7792 ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7793 { 7794 int retval; 7795 int isc_retval; 7796 u_int32_t param_len; 7797 struct scsi_per_res_out *cdb; 7798 struct ctl_lun *lun; 7799 struct scsi_per_res_out_parms* param; 7800 struct ctl_softc *softc; 7801 uint32_t residx; 7802 uint64_t res_key, sa_res_key; 7803 uint8_t type; 7804 union ctl_ha_msg persis_io; 7805 int i; 7806 7807 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7808 7809 retval = CTL_RETVAL_COMPLETE; 7810 7811 softc = control_softc; 7812 7813 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7814 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7815 7816 /* 7817 * We only support whole-LUN scope. The scope & type are ignored for 7818 * register, register and ignore existing key and clear. 7819 * We sometimes ignore scope and type on preempts too!! 7820 * Verify reservation type here as well. 7821 */ 7822 type = cdb->scope_type & SPR_TYPE_MASK; 7823 if ((cdb->action == SPRO_RESERVE) 7824 || (cdb->action == SPRO_RELEASE)) { 7825 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7826 ctl_set_invalid_field(/*ctsio*/ ctsio, 7827 /*sks_valid*/ 1, 7828 /*command*/ 1, 7829 /*field*/ 2, 7830 /*bit_valid*/ 1, 7831 /*bit*/ 4); 7832 ctl_done((union ctl_io *)ctsio); 7833 return (CTL_RETVAL_COMPLETE); 7834 } 7835 7836 if (type>8 || type==2 || type==4 || type==0) { 7837 ctl_set_invalid_field(/*ctsio*/ ctsio, 7838 /*sks_valid*/ 1, 7839 /*command*/ 1, 7840 /*field*/ 2, 7841 /*bit_valid*/ 1, 7842 /*bit*/ 0); 7843 ctl_done((union ctl_io *)ctsio); 7844 return (CTL_RETVAL_COMPLETE); 7845 } 7846 } 7847 7848 switch (cdb->action & SPRO_ACTION_MASK) { 7849 case SPRO_REGISTER: 7850 case SPRO_RESERVE: 7851 case SPRO_RELEASE: 7852 case SPRO_CLEAR: 7853 case SPRO_PREEMPT: 7854 case SPRO_REG_IGNO: 7855 break; 7856 case SPRO_REG_MOVE: 7857 case SPRO_PRE_ABO: 7858 default: 7859 ctl_set_invalid_field(/*ctsio*/ ctsio, 7860 /*sks_valid*/ 1, 7861 /*command*/ 1, 7862 /*field*/ 1, 7863 /*bit_valid*/ 1, 7864 /*bit*/ 0); 7865 ctl_done((union ctl_io *)ctsio); 7866 return (CTL_RETVAL_COMPLETE); 7867 break; /* NOTREACHED */ 7868 } 7869 7870 param_len = scsi_4btoul(cdb->length); 7871 7872 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7873 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7874 if (ctsio->kern_data_ptr == NULL) { 7875 ctl_set_busy(ctsio); 7876 ctl_done((union ctl_io *)ctsio); 7877 return (CTL_RETVAL_COMPLETE); 7878 } 7879 ctsio->kern_data_len = param_len; 7880 ctsio->kern_total_len = param_len; 7881 ctsio->kern_data_resid = 0; 7882 ctsio->kern_rel_offset = 0; 7883 ctsio->kern_sg_entries = 0; 7884 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7885 ctsio->be_move_done = ctl_config_move_done; 7886 ctl_datamove((union ctl_io *)ctsio); 7887 7888 return (CTL_RETVAL_COMPLETE); 7889 } 7890 7891 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7892 7893 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7894 res_key = scsi_8btou64(param->res_key.key); 7895 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7896 7897 /* 7898 * Validate the reservation key here except for SPRO_REG_IGNO 7899 * This must be done for all other service actions 7900 */ 7901 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 7902 mtx_lock(&softc->ctl_lock); 7903 if (lun->per_res[residx].registered) { 7904 if (memcmp(param->res_key.key, 7905 lun->per_res[residx].res_key.key, 7906 ctl_min(sizeof(param->res_key), 7907 sizeof(lun->per_res[residx].res_key))) != 0) { 7908 /* 7909 * The current key passed in doesn't match 7910 * the one the initiator previously 7911 * registered. 7912 */ 7913 mtx_unlock(&softc->ctl_lock); 7914 free(ctsio->kern_data_ptr, M_CTL); 7915 ctl_set_reservation_conflict(ctsio); 7916 ctl_done((union ctl_io *)ctsio); 7917 return (CTL_RETVAL_COMPLETE); 7918 } 7919 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 7920 /* 7921 * We are not registered 7922 */ 7923 mtx_unlock(&softc->ctl_lock); 7924 free(ctsio->kern_data_ptr, M_CTL); 7925 ctl_set_reservation_conflict(ctsio); 7926 ctl_done((union ctl_io *)ctsio); 7927 return (CTL_RETVAL_COMPLETE); 7928 } else if (res_key != 0) { 7929 /* 7930 * We are not registered and trying to register but 7931 * the register key isn't zero. 7932 */ 7933 mtx_unlock(&softc->ctl_lock); 7934 free(ctsio->kern_data_ptr, M_CTL); 7935 ctl_set_reservation_conflict(ctsio); 7936 ctl_done((union ctl_io *)ctsio); 7937 return (CTL_RETVAL_COMPLETE); 7938 } 7939 mtx_unlock(&softc->ctl_lock); 7940 } 7941 7942 switch (cdb->action & SPRO_ACTION_MASK) { 7943 case SPRO_REGISTER: 7944 case SPRO_REG_IGNO: { 7945 7946 #if 0 7947 printf("Registration received\n"); 7948 #endif 7949 7950 /* 7951 * We don't support any of these options, as we report in 7952 * the read capabilities request (see 7953 * ctl_persistent_reserve_in(), above). 7954 */ 7955 if ((param->flags & SPR_SPEC_I_PT) 7956 || (param->flags & SPR_ALL_TG_PT) 7957 || (param->flags & SPR_APTPL)) { 7958 int bit_ptr; 7959 7960 if (param->flags & SPR_APTPL) 7961 bit_ptr = 0; 7962 else if (param->flags & SPR_ALL_TG_PT) 7963 bit_ptr = 2; 7964 else /* SPR_SPEC_I_PT */ 7965 bit_ptr = 3; 7966 7967 free(ctsio->kern_data_ptr, M_CTL); 7968 ctl_set_invalid_field(ctsio, 7969 /*sks_valid*/ 1, 7970 /*command*/ 0, 7971 /*field*/ 20, 7972 /*bit_valid*/ 1, 7973 /*bit*/ bit_ptr); 7974 ctl_done((union ctl_io *)ctsio); 7975 return (CTL_RETVAL_COMPLETE); 7976 } 7977 7978 mtx_lock(&softc->ctl_lock); 7979 7980 /* 7981 * The initiator wants to clear the 7982 * key/unregister. 7983 */ 7984 if (sa_res_key == 0) { 7985 if ((res_key == 0 7986 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 7987 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 7988 && !lun->per_res[residx].registered)) { 7989 mtx_unlock(&softc->ctl_lock); 7990 goto done; 7991 } 7992 7993 lun->per_res[residx].registered = 0; 7994 memset(&lun->per_res[residx].res_key, 7995 0, sizeof(lun->per_res[residx].res_key)); 7996 lun->pr_key_count--; 7997 7998 if (residx == lun->pr_res_idx) { 7999 lun->flags &= ~CTL_LUN_PR_RESERVED; 8000 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8001 8002 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8003 || lun->res_type == SPR_TYPE_EX_AC_RO) 8004 && lun->pr_key_count) { 8005 /* 8006 * If the reservation is a registrants 8007 * only type we need to generate a UA 8008 * for other registered inits. The 8009 * sense code should be RESERVATIONS 8010 * RELEASED 8011 */ 8012 8013 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8014 if (lun->per_res[ 8015 i+persis_offset].registered 8016 == 0) 8017 continue; 8018 lun->pending_sense[i 8019 ].ua_pending |= 8020 CTL_UA_RES_RELEASE; 8021 } 8022 } 8023 lun->res_type = 0; 8024 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8025 if (lun->pr_key_count==0) { 8026 lun->flags &= ~CTL_LUN_PR_RESERVED; 8027 lun->res_type = 0; 8028 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8029 } 8030 } 8031 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8032 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8033 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8034 persis_io.pr.pr_info.residx = residx; 8035 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8036 &persis_io, sizeof(persis_io), 0 )) > 8037 CTL_HA_STATUS_SUCCESS) { 8038 printf("CTL:Persis Out error returned from " 8039 "ctl_ha_msg_send %d\n", isc_retval); 8040 } 8041 mtx_unlock(&softc->ctl_lock); 8042 } else /* sa_res_key != 0 */ { 8043 8044 /* 8045 * If we aren't registered currently then increment 8046 * the key count and set the registered flag. 8047 */ 8048 if (!lun->per_res[residx].registered) { 8049 lun->pr_key_count++; 8050 lun->per_res[residx].registered = 1; 8051 } 8052 8053 memcpy(&lun->per_res[residx].res_key, 8054 param->serv_act_res_key, 8055 ctl_min(sizeof(param->serv_act_res_key), 8056 sizeof(lun->per_res[residx].res_key))); 8057 8058 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8059 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8060 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8061 persis_io.pr.pr_info.residx = residx; 8062 memcpy(persis_io.pr.pr_info.sa_res_key, 8063 param->serv_act_res_key, 8064 sizeof(param->serv_act_res_key)); 8065 mtx_unlock(&softc->ctl_lock); 8066 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8067 &persis_io, sizeof(persis_io), 0)) > 8068 CTL_HA_STATUS_SUCCESS) { 8069 printf("CTL:Persis Out error returned from " 8070 "ctl_ha_msg_send %d\n", isc_retval); 8071 } 8072 } 8073 lun->PRGeneration++; 8074 8075 break; 8076 } 8077 case SPRO_RESERVE: 8078 #if 0 8079 printf("Reserve executed type %d\n", type); 8080 #endif 8081 mtx_lock(&softc->ctl_lock); 8082 if (lun->flags & CTL_LUN_PR_RESERVED) { 8083 /* 8084 * if this isn't the reservation holder and it's 8085 * not a "all registrants" type or if the type is 8086 * different then we have a conflict 8087 */ 8088 if ((lun->pr_res_idx != residx 8089 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8090 || lun->res_type != type) { 8091 mtx_unlock(&softc->ctl_lock); 8092 free(ctsio->kern_data_ptr, M_CTL); 8093 ctl_set_reservation_conflict(ctsio); 8094 ctl_done((union ctl_io *)ctsio); 8095 return (CTL_RETVAL_COMPLETE); 8096 } 8097 } else /* create a reservation */ { 8098 /* 8099 * If it's not an "all registrants" type record 8100 * reservation holder 8101 */ 8102 if (type != SPR_TYPE_WR_EX_AR 8103 && type != SPR_TYPE_EX_AC_AR) 8104 lun->pr_res_idx = residx; /* Res holder */ 8105 else 8106 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8107 8108 lun->flags |= CTL_LUN_PR_RESERVED; 8109 lun->res_type = type; 8110 8111 mtx_unlock(&softc->ctl_lock); 8112 8113 /* send msg to other side */ 8114 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8115 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8116 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8117 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8118 persis_io.pr.pr_info.res_type = type; 8119 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8120 &persis_io, sizeof(persis_io), 0)) > 8121 CTL_HA_STATUS_SUCCESS) { 8122 printf("CTL:Persis Out error returned from " 8123 "ctl_ha_msg_send %d\n", isc_retval); 8124 } 8125 } 8126 break; 8127 8128 case SPRO_RELEASE: 8129 mtx_lock(&softc->ctl_lock); 8130 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8131 /* No reservation exists return good status */ 8132 mtx_unlock(&softc->ctl_lock); 8133 goto done; 8134 } 8135 /* 8136 * Is this nexus a reservation holder? 8137 */ 8138 if (lun->pr_res_idx != residx 8139 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8140 /* 8141 * not a res holder return good status but 8142 * do nothing 8143 */ 8144 mtx_unlock(&softc->ctl_lock); 8145 goto done; 8146 } 8147 8148 if (lun->res_type != type) { 8149 mtx_unlock(&softc->ctl_lock); 8150 free(ctsio->kern_data_ptr, M_CTL); 8151 ctl_set_illegal_pr_release(ctsio); 8152 ctl_done((union ctl_io *)ctsio); 8153 return (CTL_RETVAL_COMPLETE); 8154 } 8155 8156 /* okay to release */ 8157 lun->flags &= ~CTL_LUN_PR_RESERVED; 8158 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8159 lun->res_type = 0; 8160 8161 /* 8162 * if this isn't an exclusive access 8163 * res generate UA for all other 8164 * registrants. 8165 */ 8166 if (type != SPR_TYPE_EX_AC 8167 && type != SPR_TYPE_WR_EX) { 8168 /* 8169 * temporarily unregister so we don't generate UA 8170 */ 8171 lun->per_res[residx].registered = 0; 8172 8173 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8174 if (lun->per_res[i+persis_offset].registered 8175 == 0) 8176 continue; 8177 lun->pending_sense[i].ua_pending |= 8178 CTL_UA_RES_RELEASE; 8179 } 8180 8181 lun->per_res[residx].registered = 1; 8182 } 8183 mtx_unlock(&softc->ctl_lock); 8184 /* Send msg to other side */ 8185 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8186 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8187 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8188 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8189 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8190 printf("CTL:Persis Out error returned from " 8191 "ctl_ha_msg_send %d\n", isc_retval); 8192 } 8193 break; 8194 8195 case SPRO_CLEAR: 8196 /* send msg to other side */ 8197 8198 mtx_lock(&softc->ctl_lock); 8199 lun->flags &= ~CTL_LUN_PR_RESERVED; 8200 lun->res_type = 0; 8201 lun->pr_key_count = 0; 8202 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8203 8204 8205 memset(&lun->per_res[residx].res_key, 8206 0, sizeof(lun->per_res[residx].res_key)); 8207 lun->per_res[residx].registered = 0; 8208 8209 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8210 if (lun->per_res[i].registered) { 8211 if (!persis_offset && i < CTL_MAX_INITIATORS) 8212 lun->pending_sense[i].ua_pending |= 8213 CTL_UA_RES_PREEMPT; 8214 else if (persis_offset && i >= persis_offset) 8215 lun->pending_sense[i-persis_offset 8216 ].ua_pending |= CTL_UA_RES_PREEMPT; 8217 8218 memset(&lun->per_res[i].res_key, 8219 0, sizeof(struct scsi_per_res_key)); 8220 lun->per_res[i].registered = 0; 8221 } 8222 lun->PRGeneration++; 8223 mtx_unlock(&softc->ctl_lock); 8224 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8225 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8226 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8227 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8228 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8229 printf("CTL:Persis Out error returned from " 8230 "ctl_ha_msg_send %d\n", isc_retval); 8231 } 8232 break; 8233 8234 case SPRO_PREEMPT: { 8235 int nretval; 8236 8237 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8238 residx, ctsio, cdb, param); 8239 if (nretval != 0) 8240 return (CTL_RETVAL_COMPLETE); 8241 break; 8242 } 8243 case SPRO_REG_MOVE: 8244 case SPRO_PRE_ABO: 8245 default: 8246 free(ctsio->kern_data_ptr, M_CTL); 8247 ctl_set_invalid_field(/*ctsio*/ ctsio, 8248 /*sks_valid*/ 1, 8249 /*command*/ 1, 8250 /*field*/ 1, 8251 /*bit_valid*/ 1, 8252 /*bit*/ 0); 8253 ctl_done((union ctl_io *)ctsio); 8254 return (CTL_RETVAL_COMPLETE); 8255 break; /* NOTREACHED */ 8256 } 8257 8258 done: 8259 free(ctsio->kern_data_ptr, M_CTL); 8260 ctl_set_success(ctsio); 8261 ctl_done((union ctl_io *)ctsio); 8262 8263 return (retval); 8264 } 8265 8266 /* 8267 * This routine is for handling a message from the other SC pertaining to 8268 * persistent reserve out. All the error checking will have been done 8269 * so only perorming the action need be done here to keep the two 8270 * in sync. 8271 */ 8272 static void 8273 ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8274 { 8275 struct ctl_lun *lun; 8276 struct ctl_softc *softc; 8277 int i; 8278 8279 softc = control_softc; 8280 8281 mtx_lock(&softc->ctl_lock); 8282 8283 lun = softc->ctl_luns[msg->hdr.nexus.targ_lun]; 8284 switch(msg->pr.pr_info.action) { 8285 case CTL_PR_REG_KEY: 8286 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8287 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8288 lun->pr_key_count++; 8289 } 8290 lun->PRGeneration++; 8291 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8292 msg->pr.pr_info.sa_res_key, 8293 sizeof(struct scsi_per_res_key)); 8294 break; 8295 8296 case CTL_PR_UNREG_KEY: 8297 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8298 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8299 0, sizeof(struct scsi_per_res_key)); 8300 lun->pr_key_count--; 8301 8302 /* XXX Need to see if the reservation has been released */ 8303 /* if so do we need to generate UA? */ 8304 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8305 lun->flags &= ~CTL_LUN_PR_RESERVED; 8306 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8307 8308 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8309 || lun->res_type == SPR_TYPE_EX_AC_RO) 8310 && lun->pr_key_count) { 8311 /* 8312 * If the reservation is a registrants 8313 * only type we need to generate a UA 8314 * for other registered inits. The 8315 * sense code should be RESERVATIONS 8316 * RELEASED 8317 */ 8318 8319 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8320 if (lun->per_res[i+ 8321 persis_offset].registered == 0) 8322 continue; 8323 8324 lun->pending_sense[i 8325 ].ua_pending |= 8326 CTL_UA_RES_RELEASE; 8327 } 8328 } 8329 lun->res_type = 0; 8330 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8331 if (lun->pr_key_count==0) { 8332 lun->flags &= ~CTL_LUN_PR_RESERVED; 8333 lun->res_type = 0; 8334 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8335 } 8336 } 8337 lun->PRGeneration++; 8338 break; 8339 8340 case CTL_PR_RESERVE: 8341 lun->flags |= CTL_LUN_PR_RESERVED; 8342 lun->res_type = msg->pr.pr_info.res_type; 8343 lun->pr_res_idx = msg->pr.pr_info.residx; 8344 8345 break; 8346 8347 case CTL_PR_RELEASE: 8348 /* 8349 * if this isn't an exclusive access res generate UA for all 8350 * other registrants. 8351 */ 8352 if (lun->res_type != SPR_TYPE_EX_AC 8353 && lun->res_type != SPR_TYPE_WR_EX) { 8354 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8355 if (lun->per_res[i+persis_offset].registered) 8356 lun->pending_sense[i].ua_pending |= 8357 CTL_UA_RES_RELEASE; 8358 } 8359 8360 lun->flags &= ~CTL_LUN_PR_RESERVED; 8361 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8362 lun->res_type = 0; 8363 break; 8364 8365 case CTL_PR_PREEMPT: 8366 ctl_pro_preempt_other(lun, msg); 8367 break; 8368 case CTL_PR_CLEAR: 8369 lun->flags &= ~CTL_LUN_PR_RESERVED; 8370 lun->res_type = 0; 8371 lun->pr_key_count = 0; 8372 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8373 8374 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8375 if (lun->per_res[i].registered == 0) 8376 continue; 8377 if (!persis_offset 8378 && i < CTL_MAX_INITIATORS) 8379 lun->pending_sense[i].ua_pending |= 8380 CTL_UA_RES_PREEMPT; 8381 else if (persis_offset 8382 && i >= persis_offset) 8383 lun->pending_sense[i-persis_offset].ua_pending|= 8384 CTL_UA_RES_PREEMPT; 8385 memset(&lun->per_res[i].res_key, 0, 8386 sizeof(struct scsi_per_res_key)); 8387 lun->per_res[i].registered = 0; 8388 } 8389 lun->PRGeneration++; 8390 break; 8391 } 8392 8393 mtx_unlock(&softc->ctl_lock); 8394 } 8395 8396 int 8397 ctl_read_write(struct ctl_scsiio *ctsio) 8398 { 8399 struct ctl_lun *lun; 8400 struct ctl_lba_len lbalen; 8401 uint64_t lba; 8402 uint32_t num_blocks; 8403 int reladdr, fua, dpo, ebp; 8404 int retval; 8405 int isread; 8406 8407 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8408 8409 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8410 8411 reladdr = 0; 8412 fua = 0; 8413 dpo = 0; 8414 ebp = 0; 8415 8416 retval = CTL_RETVAL_COMPLETE; 8417 8418 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8419 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8420 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8421 uint32_t residx; 8422 8423 /* 8424 * XXX KDM need a lock here. 8425 */ 8426 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8427 if ((lun->res_type == SPR_TYPE_EX_AC 8428 && residx != lun->pr_res_idx) 8429 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8430 || lun->res_type == SPR_TYPE_EX_AC_AR) 8431 && !lun->per_res[residx].registered)) { 8432 ctl_set_reservation_conflict(ctsio); 8433 ctl_done((union ctl_io *)ctsio); 8434 return (CTL_RETVAL_COMPLETE); 8435 } 8436 } 8437 8438 switch (ctsio->cdb[0]) { 8439 case READ_6: 8440 case WRITE_6: { 8441 struct scsi_rw_6 *cdb; 8442 8443 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8444 8445 lba = scsi_3btoul(cdb->addr); 8446 /* only 5 bits are valid in the most significant address byte */ 8447 lba &= 0x1fffff; 8448 num_blocks = cdb->length; 8449 /* 8450 * This is correct according to SBC-2. 8451 */ 8452 if (num_blocks == 0) 8453 num_blocks = 256; 8454 break; 8455 } 8456 case READ_10: 8457 case WRITE_10: { 8458 struct scsi_rw_10 *cdb; 8459 8460 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8461 8462 if (cdb->byte2 & SRW10_RELADDR) 8463 reladdr = 1; 8464 if (cdb->byte2 & SRW10_FUA) 8465 fua = 1; 8466 if (cdb->byte2 & SRW10_DPO) 8467 dpo = 1; 8468 8469 if ((cdb->opcode == WRITE_10) 8470 && (cdb->byte2 & SRW10_EBP)) 8471 ebp = 1; 8472 8473 lba = scsi_4btoul(cdb->addr); 8474 num_blocks = scsi_2btoul(cdb->length); 8475 break; 8476 } 8477 case WRITE_VERIFY_10: { 8478 struct scsi_write_verify_10 *cdb; 8479 8480 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8481 8482 /* 8483 * XXX KDM we should do actual write verify support at some 8484 * point. This is obviously fake, we're just translating 8485 * things to a write. So we don't even bother checking the 8486 * BYTCHK field, since we don't do any verification. If 8487 * the user asks for it, we'll just pretend we did it. 8488 */ 8489 if (cdb->byte2 & SWV_DPO) 8490 dpo = 1; 8491 8492 lba = scsi_4btoul(cdb->addr); 8493 num_blocks = scsi_2btoul(cdb->length); 8494 break; 8495 } 8496 case READ_12: 8497 case WRITE_12: { 8498 struct scsi_rw_12 *cdb; 8499 8500 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8501 8502 if (cdb->byte2 & SRW12_RELADDR) 8503 reladdr = 1; 8504 if (cdb->byte2 & SRW12_FUA) 8505 fua = 1; 8506 if (cdb->byte2 & SRW12_DPO) 8507 dpo = 1; 8508 lba = scsi_4btoul(cdb->addr); 8509 num_blocks = scsi_4btoul(cdb->length); 8510 break; 8511 } 8512 case WRITE_VERIFY_12: { 8513 struct scsi_write_verify_12 *cdb; 8514 8515 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8516 8517 if (cdb->byte2 & SWV_DPO) 8518 dpo = 1; 8519 8520 lba = scsi_4btoul(cdb->addr); 8521 num_blocks = scsi_4btoul(cdb->length); 8522 8523 break; 8524 } 8525 case READ_16: 8526 case WRITE_16: { 8527 struct scsi_rw_16 *cdb; 8528 8529 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8530 8531 if (cdb->byte2 & SRW12_RELADDR) 8532 reladdr = 1; 8533 if (cdb->byte2 & SRW12_FUA) 8534 fua = 1; 8535 if (cdb->byte2 & SRW12_DPO) 8536 dpo = 1; 8537 8538 lba = scsi_8btou64(cdb->addr); 8539 num_blocks = scsi_4btoul(cdb->length); 8540 break; 8541 } 8542 case WRITE_VERIFY_16: { 8543 struct scsi_write_verify_16 *cdb; 8544 8545 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8546 8547 if (cdb->byte2 & SWV_DPO) 8548 dpo = 1; 8549 8550 lba = scsi_8btou64(cdb->addr); 8551 num_blocks = scsi_4btoul(cdb->length); 8552 break; 8553 } 8554 default: 8555 /* 8556 * We got a command we don't support. This shouldn't 8557 * happen, commands should be filtered out above us. 8558 */ 8559 ctl_set_invalid_opcode(ctsio); 8560 ctl_done((union ctl_io *)ctsio); 8561 8562 return (CTL_RETVAL_COMPLETE); 8563 break; /* NOTREACHED */ 8564 } 8565 8566 /* 8567 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8568 * interesting for us, but if RAIDCore is in write-back mode, 8569 * getting it to do write-through for a particular transaction may 8570 * not be possible. 8571 */ 8572 /* 8573 * We don't support relative addressing. That also requires 8574 * supporting linked commands, which we don't do. 8575 */ 8576 if (reladdr != 0) { 8577 ctl_set_invalid_field(ctsio, 8578 /*sks_valid*/ 1, 8579 /*command*/ 1, 8580 /*field*/ 1, 8581 /*bit_valid*/ 1, 8582 /*bit*/ 0); 8583 ctl_done((union ctl_io *)ctsio); 8584 return (CTL_RETVAL_COMPLETE); 8585 } 8586 8587 /* 8588 * The first check is to make sure we're in bounds, the second 8589 * check is to catch wrap-around problems. If the lba + num blocks 8590 * is less than the lba, then we've wrapped around and the block 8591 * range is invalid anyway. 8592 */ 8593 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8594 || ((lba + num_blocks) < lba)) { 8595 ctl_set_lba_out_of_range(ctsio); 8596 ctl_done((union ctl_io *)ctsio); 8597 return (CTL_RETVAL_COMPLETE); 8598 } 8599 8600 /* 8601 * According to SBC-3, a transfer length of 0 is not an error. 8602 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8603 * translates to 256 blocks for those commands. 8604 */ 8605 if (num_blocks == 0) { 8606 ctl_set_success(ctsio); 8607 ctl_done((union ctl_io *)ctsio); 8608 return (CTL_RETVAL_COMPLETE); 8609 } 8610 8611 lbalen.lba = lba; 8612 lbalen.len = num_blocks; 8613 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8614 sizeof(lbalen)); 8615 8616 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8617 8618 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8619 8620 return (retval); 8621 } 8622 8623 int 8624 ctl_report_luns(struct ctl_scsiio *ctsio) 8625 { 8626 struct scsi_report_luns *cdb; 8627 struct scsi_report_luns_data *lun_data; 8628 struct ctl_lun *lun, *request_lun; 8629 int num_luns, retval; 8630 uint32_t alloc_len, lun_datalen; 8631 int num_filled, well_known; 8632 uint32_t initidx; 8633 8634 retval = CTL_RETVAL_COMPLETE; 8635 well_known = 0; 8636 8637 cdb = (struct scsi_report_luns *)ctsio->cdb; 8638 8639 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8640 8641 mtx_lock(&control_softc->ctl_lock); 8642 num_luns = control_softc->num_luns; 8643 mtx_unlock(&control_softc->ctl_lock); 8644 8645 switch (cdb->select_report) { 8646 case RPL_REPORT_DEFAULT: 8647 case RPL_REPORT_ALL: 8648 break; 8649 case RPL_REPORT_WELLKNOWN: 8650 well_known = 1; 8651 num_luns = 0; 8652 break; 8653 default: 8654 ctl_set_invalid_field(ctsio, 8655 /*sks_valid*/ 1, 8656 /*command*/ 1, 8657 /*field*/ 2, 8658 /*bit_valid*/ 0, 8659 /*bit*/ 0); 8660 ctl_done((union ctl_io *)ctsio); 8661 return (retval); 8662 break; /* NOTREACHED */ 8663 } 8664 8665 alloc_len = scsi_4btoul(cdb->length); 8666 /* 8667 * The initiator has to allocate at least 16 bytes for this request, 8668 * so he can at least get the header and the first LUN. Otherwise 8669 * we reject the request (per SPC-3 rev 14, section 6.21). 8670 */ 8671 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8672 sizeof(struct scsi_report_luns_lundata))) { 8673 ctl_set_invalid_field(ctsio, 8674 /*sks_valid*/ 1, 8675 /*command*/ 1, 8676 /*field*/ 6, 8677 /*bit_valid*/ 0, 8678 /*bit*/ 0); 8679 ctl_done((union ctl_io *)ctsio); 8680 return (retval); 8681 } 8682 8683 request_lun = (struct ctl_lun *) 8684 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8685 8686 lun_datalen = sizeof(*lun_data) + 8687 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8688 8689 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK); 8690 if (ctsio->kern_data_ptr == NULL) { 8691 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8692 ctsio->scsi_status = SCSI_STATUS_BUSY; 8693 ctl_done((union ctl_io *)ctsio); 8694 return (CTL_RETVAL_COMPLETE); 8695 } 8696 8697 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8698 ctsio->kern_sg_entries = 0; 8699 8700 if (lun_datalen < alloc_len) { 8701 ctsio->residual = alloc_len - lun_datalen; 8702 ctsio->kern_data_len = lun_datalen; 8703 ctsio->kern_total_len = lun_datalen; 8704 } else { 8705 ctsio->residual = 0; 8706 ctsio->kern_data_len = alloc_len; 8707 ctsio->kern_total_len = alloc_len; 8708 } 8709 ctsio->kern_data_resid = 0; 8710 ctsio->kern_rel_offset = 0; 8711 ctsio->kern_sg_entries = 0; 8712 8713 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8714 8715 memset(lun_data, 0, lun_datalen); 8716 8717 /* 8718 * We set this to the actual data length, regardless of how much 8719 * space we actually have to return results. If the user looks at 8720 * this value, he'll know whether or not he allocated enough space 8721 * and reissue the command if necessary. We don't support well 8722 * known logical units, so if the user asks for that, return none. 8723 */ 8724 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8725 8726 mtx_lock(&control_softc->ctl_lock); 8727 for (num_filled = 0, lun = STAILQ_FIRST(&control_softc->lun_list); 8728 (lun != NULL) && (num_filled < num_luns); 8729 lun = STAILQ_NEXT(lun, links)) { 8730 8731 if (lun->lun <= 0xff) { 8732 /* 8733 * Peripheral addressing method, bus number 0. 8734 */ 8735 lun_data->luns[num_filled].lundata[0] = 8736 RPL_LUNDATA_ATYP_PERIPH; 8737 lun_data->luns[num_filled].lundata[1] = lun->lun; 8738 num_filled++; 8739 } else if (lun->lun <= 0x3fff) { 8740 /* 8741 * Flat addressing method. 8742 */ 8743 lun_data->luns[num_filled].lundata[0] = 8744 RPL_LUNDATA_ATYP_FLAT | 8745 (lun->lun & RPL_LUNDATA_FLAT_LUN_MASK); 8746 #ifdef OLDCTLHEADERS 8747 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8748 (lun->lun & SRLD_BUS_LUN_MASK); 8749 #endif 8750 lun_data->luns[num_filled].lundata[1] = 8751 #ifdef OLDCTLHEADERS 8752 lun->lun >> SRLD_BUS_LUN_BITS; 8753 #endif 8754 lun->lun >> RPL_LUNDATA_FLAT_LUN_BITS; 8755 num_filled++; 8756 } else { 8757 printf("ctl_report_luns: bogus LUN number %jd, " 8758 "skipping\n", (intmax_t)lun->lun); 8759 } 8760 /* 8761 * According to SPC-3, rev 14 section 6.21: 8762 * 8763 * "The execution of a REPORT LUNS command to any valid and 8764 * installed logical unit shall clear the REPORTED LUNS DATA 8765 * HAS CHANGED unit attention condition for all logical 8766 * units of that target with respect to the requesting 8767 * initiator. A valid and installed logical unit is one 8768 * having a PERIPHERAL QUALIFIER of 000b in the standard 8769 * INQUIRY data (see 6.4.2)." 8770 * 8771 * If request_lun is NULL, the LUN this report luns command 8772 * was issued to is either disabled or doesn't exist. In that 8773 * case, we shouldn't clear any pending lun change unit 8774 * attention. 8775 */ 8776 if (request_lun != NULL) 8777 lun->pending_sense[initidx].ua_pending &= 8778 ~CTL_UA_LUN_CHANGE; 8779 } 8780 mtx_unlock(&control_softc->ctl_lock); 8781 8782 /* 8783 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8784 * this request. 8785 */ 8786 ctsio->scsi_status = SCSI_STATUS_OK; 8787 8788 ctsio->be_move_done = ctl_config_move_done; 8789 ctl_datamove((union ctl_io *)ctsio); 8790 8791 return (retval); 8792 } 8793 8794 int 8795 ctl_request_sense(struct ctl_scsiio *ctsio) 8796 { 8797 struct scsi_request_sense *cdb; 8798 struct scsi_sense_data *sense_ptr; 8799 struct ctl_lun *lun; 8800 uint32_t initidx; 8801 int have_error; 8802 scsi_sense_data_type sense_format; 8803 8804 cdb = (struct scsi_request_sense *)ctsio->cdb; 8805 8806 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8807 8808 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 8809 8810 /* 8811 * Determine which sense format the user wants. 8812 */ 8813 if (cdb->byte2 & SRS_DESC) 8814 sense_format = SSD_TYPE_DESC; 8815 else 8816 sense_format = SSD_TYPE_FIXED; 8817 8818 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 8819 if (ctsio->kern_data_ptr == NULL) { 8820 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8821 ctsio->scsi_status = SCSI_STATUS_BUSY; 8822 ctl_done((union ctl_io *)ctsio); 8823 return (CTL_RETVAL_COMPLETE); 8824 } 8825 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 8826 ctsio->kern_sg_entries = 0; 8827 8828 /* 8829 * struct scsi_sense_data, which is currently set to 256 bytes, is 8830 * larger than the largest allowed value for the length field in the 8831 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 8832 */ 8833 ctsio->residual = 0; 8834 ctsio->kern_data_len = cdb->length; 8835 ctsio->kern_total_len = cdb->length; 8836 8837 ctsio->kern_data_resid = 0; 8838 ctsio->kern_rel_offset = 0; 8839 ctsio->kern_sg_entries = 0; 8840 8841 /* 8842 * If we don't have a LUN, we don't have any pending sense. 8843 */ 8844 if (lun == NULL) 8845 goto no_sense; 8846 8847 have_error = 0; 8848 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8849 /* 8850 * Check for pending sense, and then for pending unit attentions. 8851 * Pending sense gets returned first, then pending unit attentions. 8852 */ 8853 mtx_lock(&lun->ctl_softc->ctl_lock); 8854 if (ctl_is_set(lun->have_ca, initidx)) { 8855 scsi_sense_data_type stored_format; 8856 8857 /* 8858 * Check to see which sense format was used for the stored 8859 * sense data. 8860 */ 8861 stored_format = scsi_sense_type( 8862 &lun->pending_sense[initidx].sense); 8863 8864 /* 8865 * If the user requested a different sense format than the 8866 * one we stored, then we need to convert it to the other 8867 * format. If we're going from descriptor to fixed format 8868 * sense data, we may lose things in translation, depending 8869 * on what options were used. 8870 * 8871 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 8872 * for some reason we'll just copy it out as-is. 8873 */ 8874 if ((stored_format == SSD_TYPE_FIXED) 8875 && (sense_format == SSD_TYPE_DESC)) 8876 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 8877 &lun->pending_sense[initidx].sense, 8878 (struct scsi_sense_data_desc *)sense_ptr); 8879 else if ((stored_format == SSD_TYPE_DESC) 8880 && (sense_format == SSD_TYPE_FIXED)) 8881 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 8882 &lun->pending_sense[initidx].sense, 8883 (struct scsi_sense_data_fixed *)sense_ptr); 8884 else 8885 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 8886 ctl_min(sizeof(*sense_ptr), 8887 sizeof(lun->pending_sense[initidx].sense))); 8888 8889 ctl_clear_mask(lun->have_ca, initidx); 8890 have_error = 1; 8891 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 8892 ctl_ua_type ua_type; 8893 8894 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 8895 sense_ptr, sense_format); 8896 if (ua_type != CTL_UA_NONE) { 8897 have_error = 1; 8898 /* We're reporting this UA, so clear it */ 8899 lun->pending_sense[initidx].ua_pending &= ~ua_type; 8900 } 8901 } 8902 mtx_unlock(&lun->ctl_softc->ctl_lock); 8903 8904 /* 8905 * We already have a pending error, return it. 8906 */ 8907 if (have_error != 0) { 8908 /* 8909 * We report the SCSI status as OK, since the status of the 8910 * request sense command itself is OK. 8911 */ 8912 ctsio->scsi_status = SCSI_STATUS_OK; 8913 8914 /* 8915 * We report 0 for the sense length, because we aren't doing 8916 * autosense in this case. We're reporting sense as 8917 * parameter data. 8918 */ 8919 ctsio->sense_len = 0; 8920 8921 ctsio->be_move_done = ctl_config_move_done; 8922 ctl_datamove((union ctl_io *)ctsio); 8923 8924 return (CTL_RETVAL_COMPLETE); 8925 } 8926 8927 no_sense: 8928 8929 /* 8930 * No sense information to report, so we report that everything is 8931 * okay. 8932 */ 8933 ctl_set_sense_data(sense_ptr, 8934 lun, 8935 sense_format, 8936 /*current_error*/ 1, 8937 /*sense_key*/ SSD_KEY_NO_SENSE, 8938 /*asc*/ 0x00, 8939 /*ascq*/ 0x00, 8940 SSD_ELEM_NONE); 8941 8942 ctsio->scsi_status = SCSI_STATUS_OK; 8943 8944 /* 8945 * We report 0 for the sense length, because we aren't doing 8946 * autosense in this case. We're reporting sense as parameter data. 8947 */ 8948 ctsio->sense_len = 0; 8949 ctsio->be_move_done = ctl_config_move_done; 8950 ctl_datamove((union ctl_io *)ctsio); 8951 8952 return (CTL_RETVAL_COMPLETE); 8953 } 8954 8955 int 8956 ctl_tur(struct ctl_scsiio *ctsio) 8957 { 8958 struct ctl_lun *lun; 8959 8960 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8961 8962 CTL_DEBUG_PRINT(("ctl_tur\n")); 8963 8964 if (lun == NULL) 8965 return (-EINVAL); 8966 8967 ctsio->scsi_status = SCSI_STATUS_OK; 8968 ctsio->io_hdr.status = CTL_SUCCESS; 8969 8970 ctl_done((union ctl_io *)ctsio); 8971 8972 return (CTL_RETVAL_COMPLETE); 8973 } 8974 8975 #ifdef notyet 8976 static int 8977 ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 8978 { 8979 8980 } 8981 #endif 8982 8983 static int 8984 ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 8985 { 8986 struct scsi_vpd_supported_pages *pages; 8987 int sup_page_size; 8988 struct ctl_lun *lun; 8989 8990 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8991 8992 sup_page_size = sizeof(struct scsi_vpd_supported_pages) + 8993 SCSI_EVPD_NUM_SUPPORTED_PAGES; 8994 /* 8995 * XXX KDM GFP_??? We probably don't want to wait here, 8996 * unless we end up having a process/thread context. 8997 */ 8998 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK); 8999 if (ctsio->kern_data_ptr == NULL) { 9000 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9001 ctsio->scsi_status = SCSI_STATUS_BUSY; 9002 ctl_done((union ctl_io *)ctsio); 9003 return (CTL_RETVAL_COMPLETE); 9004 } 9005 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9006 ctsio->kern_sg_entries = 0; 9007 9008 if (sup_page_size < alloc_len) { 9009 ctsio->residual = alloc_len - sup_page_size; 9010 ctsio->kern_data_len = sup_page_size; 9011 ctsio->kern_total_len = sup_page_size; 9012 } else { 9013 ctsio->residual = 0; 9014 ctsio->kern_data_len = alloc_len; 9015 ctsio->kern_total_len = alloc_len; 9016 } 9017 ctsio->kern_data_resid = 0; 9018 ctsio->kern_rel_offset = 0; 9019 ctsio->kern_sg_entries = 0; 9020 9021 memset(pages, 0, sup_page_size); 9022 9023 /* 9024 * The control device is always connected. The disk device, on the 9025 * other hand, may not be online all the time. Need to change this 9026 * to figure out whether the disk device is actually online or not. 9027 */ 9028 if (lun != NULL) 9029 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9030 lun->be_lun->lun_type; 9031 else 9032 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9033 9034 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9035 /* Supported VPD pages */ 9036 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9037 /* Serial Number */ 9038 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9039 /* Device Identification */ 9040 pages->page_list[2] = SVPD_DEVICE_ID; 9041 9042 ctsio->scsi_status = SCSI_STATUS_OK; 9043 9044 ctsio->be_move_done = ctl_config_move_done; 9045 ctl_datamove((union ctl_io *)ctsio); 9046 9047 return (CTL_RETVAL_COMPLETE); 9048 } 9049 9050 static int 9051 ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9052 { 9053 struct scsi_vpd_unit_serial_number *sn_ptr; 9054 struct ctl_lun *lun; 9055 #ifndef CTL_USE_BACKEND_SN 9056 char tmpstr[32]; 9057 #endif 9058 9059 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9060 9061 /* XXX KDM which malloc flags here?? */ 9062 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK); 9063 if (ctsio->kern_data_ptr == NULL) { 9064 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9065 ctsio->scsi_status = SCSI_STATUS_BUSY; 9066 ctl_done((union ctl_io *)ctsio); 9067 return (CTL_RETVAL_COMPLETE); 9068 } 9069 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9070 ctsio->kern_sg_entries = 0; 9071 9072 if (sizeof(*sn_ptr) < alloc_len) { 9073 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9074 ctsio->kern_data_len = sizeof(*sn_ptr); 9075 ctsio->kern_total_len = sizeof(*sn_ptr); 9076 } else { 9077 ctsio->residual = 0; 9078 ctsio->kern_data_len = alloc_len; 9079 ctsio->kern_total_len = alloc_len; 9080 } 9081 ctsio->kern_data_resid = 0; 9082 ctsio->kern_rel_offset = 0; 9083 ctsio->kern_sg_entries = 0; 9084 9085 memset(sn_ptr, 0, sizeof(*sn_ptr)); 9086 9087 /* 9088 * The control device is always connected. The disk device, on the 9089 * other hand, may not be online all the time. Need to change this 9090 * to figure out whether the disk device is actually online or not. 9091 */ 9092 if (lun != NULL) 9093 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9094 lun->be_lun->lun_type; 9095 else 9096 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9097 9098 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9099 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9100 #ifdef CTL_USE_BACKEND_SN 9101 /* 9102 * If we don't have a LUN, we just leave the serial number as 9103 * all spaces. 9104 */ 9105 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9106 if (lun != NULL) { 9107 strncpy((char *)sn_ptr->serial_num, 9108 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9109 } 9110 #else 9111 /* 9112 * Note that we're using a non-unique serial number here, 9113 */ 9114 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9115 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9116 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9117 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9118 #endif 9119 ctsio->scsi_status = SCSI_STATUS_OK; 9120 9121 ctsio->be_move_done = ctl_config_move_done; 9122 ctl_datamove((union ctl_io *)ctsio); 9123 9124 return (CTL_RETVAL_COMPLETE); 9125 } 9126 9127 9128 static int 9129 ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9130 { 9131 struct scsi_vpd_device_id *devid_ptr; 9132 struct scsi_vpd_id_descriptor *desc, *desc1; 9133 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9134 struct scsi_vpd_id_t10 *t10id; 9135 struct ctl_softc *ctl_softc; 9136 struct ctl_lun *lun; 9137 struct ctl_frontend *fe; 9138 #ifndef CTL_USE_BACKEND_SN 9139 char tmpstr[32]; 9140 #endif /* CTL_USE_BACKEND_SN */ 9141 int devid_len; 9142 9143 ctl_softc = control_softc; 9144 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9145 9146 devid_len = sizeof(struct scsi_vpd_device_id) + 9147 sizeof(struct scsi_vpd_id_descriptor) + 9148 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9149 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9150 sizeof(struct scsi_vpd_id_descriptor) + 9151 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9152 sizeof(struct scsi_vpd_id_descriptor) + 9153 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9154 9155 /* XXX KDM which malloc flags here ?? */ 9156 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK); 9157 if (ctsio->kern_data_ptr == NULL) { 9158 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9159 ctsio->scsi_status = SCSI_STATUS_BUSY; 9160 ctl_done((union ctl_io *)ctsio); 9161 return (CTL_RETVAL_COMPLETE); 9162 } 9163 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9164 ctsio->kern_sg_entries = 0; 9165 9166 if (devid_len < alloc_len) { 9167 ctsio->residual = alloc_len - devid_len; 9168 ctsio->kern_data_len = devid_len; 9169 ctsio->kern_total_len = devid_len; 9170 } else { 9171 ctsio->residual = 0; 9172 ctsio->kern_data_len = alloc_len; 9173 ctsio->kern_total_len = alloc_len; 9174 } 9175 ctsio->kern_data_resid = 0; 9176 ctsio->kern_rel_offset = 0; 9177 ctsio->kern_sg_entries = 0; 9178 9179 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9180 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9181 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9182 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9183 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9184 CTL_WWPN_LEN); 9185 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9186 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9187 memset(devid_ptr, 0, devid_len); 9188 9189 /* 9190 * The control device is always connected. The disk device, on the 9191 * other hand, may not be online all the time. 9192 */ 9193 if (lun != NULL) 9194 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9195 lun->be_lun->lun_type; 9196 else 9197 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9198 9199 devid_ptr->page_code = SVPD_DEVICE_ID; 9200 9201 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9202 9203 mtx_lock(&ctl_softc->ctl_lock); 9204 9205 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9206 9207 /* 9208 * For Fibre channel, 9209 */ 9210 if (fe->port_type == CTL_PORT_FC) 9211 { 9212 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9213 SVPD_ID_CODESET_ASCII; 9214 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9215 SVPD_ID_CODESET_BINARY; 9216 } 9217 else 9218 { 9219 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9220 SVPD_ID_CODESET_ASCII; 9221 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9222 SVPD_ID_CODESET_BINARY; 9223 } 9224 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9225 mtx_unlock(&ctl_softc->ctl_lock); 9226 9227 /* 9228 * We're using a LUN association here. i.e., this device ID is a 9229 * per-LUN identifier. 9230 */ 9231 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9232 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9233 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9234 9235 /* 9236 * desc1 is for the WWPN which is a port asscociation. 9237 */ 9238 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9239 desc1->length = CTL_WWPN_LEN; 9240 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9241 /* For testing just create the WWPN */ 9242 #if 0 9243 ddb_GetWWNN((char *)desc1->identifier); 9244 9245 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9246 /* This is so Copancontrol will return something sane */ 9247 if (ctsio->io_hdr.nexus.targ_port!=0 && 9248 ctsio->io_hdr.nexus.targ_port!=8) 9249 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9250 else 9251 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9252 #endif 9253 9254 be64enc(desc1->identifier, fe->wwpn); 9255 9256 /* 9257 * desc2 is for the Relative Target Port(type 4h) identifier 9258 */ 9259 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9260 | SVPD_ID_TYPE_RELTARG; 9261 desc2->length = 4; 9262 //#if 0 9263 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9264 /* This is so Copancontrol will return something sane */ 9265 if (ctsio->io_hdr.nexus.targ_port!=0 && 9266 ctsio->io_hdr.nexus.targ_port!=8) 9267 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9268 else 9269 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9270 //#endif 9271 9272 /* 9273 * desc3 is for the Target Port Group(type 5h) identifier 9274 */ 9275 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9276 | SVPD_ID_TYPE_TPORTGRP; 9277 desc3->length = 4; 9278 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9279 desc3->identifier[3] = 1; 9280 else 9281 desc3->identifier[3] = 2; 9282 9283 #ifdef CTL_USE_BACKEND_SN 9284 /* 9285 * If we've actually got a backend, copy the device id from the 9286 * per-LUN data. Otherwise, set it to all spaces. 9287 */ 9288 if (lun != NULL) { 9289 /* 9290 * Copy the backend's LUN ID. 9291 */ 9292 strncpy((char *)t10id->vendor_spec_id, 9293 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9294 } else { 9295 /* 9296 * No backend, set this to spaces. 9297 */ 9298 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9299 } 9300 #else 9301 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9302 (lun != NULL) ? (int)lun->lun : 0); 9303 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9304 sizeof(tmpstr))); 9305 #endif 9306 9307 ctsio->scsi_status = SCSI_STATUS_OK; 9308 9309 ctsio->be_move_done = ctl_config_move_done; 9310 ctl_datamove((union ctl_io *)ctsio); 9311 9312 return (CTL_RETVAL_COMPLETE); 9313 } 9314 9315 static int 9316 ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9317 { 9318 struct scsi_inquiry *cdb; 9319 int alloc_len, retval; 9320 9321 cdb = (struct scsi_inquiry *)ctsio->cdb; 9322 9323 retval = CTL_RETVAL_COMPLETE; 9324 9325 alloc_len = scsi_2btoul(cdb->length); 9326 9327 switch (cdb->page_code) { 9328 case SVPD_SUPPORTED_PAGES: 9329 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9330 break; 9331 case SVPD_UNIT_SERIAL_NUMBER: 9332 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9333 break; 9334 case SVPD_DEVICE_ID: 9335 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9336 break; 9337 default: 9338 ctl_set_invalid_field(ctsio, 9339 /*sks_valid*/ 1, 9340 /*command*/ 1, 9341 /*field*/ 2, 9342 /*bit_valid*/ 0, 9343 /*bit*/ 0); 9344 ctl_done((union ctl_io *)ctsio); 9345 retval = CTL_RETVAL_COMPLETE; 9346 break; 9347 } 9348 9349 return (retval); 9350 } 9351 9352 static int 9353 ctl_inquiry_std(struct ctl_scsiio *ctsio) 9354 { 9355 struct scsi_inquiry_data *inq_ptr; 9356 struct scsi_inquiry *cdb; 9357 struct ctl_softc *ctl_softc; 9358 struct ctl_lun *lun; 9359 uint32_t alloc_len; 9360 int is_fc; 9361 9362 ctl_softc = control_softc; 9363 9364 /* 9365 * Figure out whether we're talking to a Fibre Channel port or not. 9366 * We treat the ioctl front end, and any SCSI adapters, as packetized 9367 * SCSI front ends. 9368 */ 9369 mtx_lock(&ctl_softc->ctl_lock); 9370 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9371 CTL_PORT_FC) 9372 is_fc = 0; 9373 else 9374 is_fc = 1; 9375 mtx_unlock(&ctl_softc->ctl_lock); 9376 9377 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9378 cdb = (struct scsi_inquiry *)ctsio->cdb; 9379 alloc_len = scsi_2btoul(cdb->length); 9380 9381 /* 9382 * We malloc the full inquiry data size here and fill it 9383 * in. If the user only asks for less, we'll give him 9384 * that much. 9385 */ 9386 /* XXX KDM what malloc flags should we use here?? */ 9387 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK); 9388 if (ctsio->kern_data_ptr == NULL) { 9389 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9390 ctsio->scsi_status = SCSI_STATUS_BUSY; 9391 ctl_done((union ctl_io *)ctsio); 9392 return (CTL_RETVAL_COMPLETE); 9393 } 9394 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9395 ctsio->kern_sg_entries = 0; 9396 ctsio->kern_data_resid = 0; 9397 ctsio->kern_rel_offset = 0; 9398 9399 if (sizeof(*inq_ptr) < alloc_len) { 9400 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9401 ctsio->kern_data_len = sizeof(*inq_ptr); 9402 ctsio->kern_total_len = sizeof(*inq_ptr); 9403 } else { 9404 ctsio->residual = 0; 9405 ctsio->kern_data_len = alloc_len; 9406 ctsio->kern_total_len = alloc_len; 9407 } 9408 9409 memset(inq_ptr, 0, sizeof(*inq_ptr)); 9410 9411 /* 9412 * If we have a LUN configured, report it as connected. Otherwise, 9413 * report that it is offline or no device is supported, depending 9414 * on the value of inquiry_pq_no_lun. 9415 * 9416 * According to the spec (SPC-4 r34), the peripheral qualifier 9417 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9418 * 9419 * "A peripheral device having the specified peripheral device type 9420 * is not connected to this logical unit. However, the device 9421 * server is capable of supporting the specified peripheral device 9422 * type on this logical unit." 9423 * 9424 * According to the same spec, the peripheral qualifier 9425 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9426 * 9427 * "The device server is not capable of supporting a peripheral 9428 * device on this logical unit. For this peripheral qualifier the 9429 * peripheral device type shall be set to 1Fh. All other peripheral 9430 * device type values are reserved for this peripheral qualifier." 9431 * 9432 * Given the text, it would seem that we probably want to report that 9433 * the LUN is offline here. There is no LUN connected, but we can 9434 * support a LUN at the given LUN number. 9435 * 9436 * In the real world, though, it sounds like things are a little 9437 * different: 9438 * 9439 * - Linux, when presented with a LUN with the offline peripheral 9440 * qualifier, will create an sg driver instance for it. So when 9441 * you attach it to CTL, you wind up with a ton of sg driver 9442 * instances. (One for every LUN that Linux bothered to probe.) 9443 * Linux does this despite the fact that it issues a REPORT LUNs 9444 * to LUN 0 to get the inventory of supported LUNs. 9445 * 9446 * - There is other anecdotal evidence (from Emulex folks) about 9447 * arrays that use the offline peripheral qualifier for LUNs that 9448 * are on the "passive" path in an active/passive array. 9449 * 9450 * So the solution is provide a hopefully reasonable default 9451 * (return bad/no LUN) and allow the user to change the behavior 9452 * with a tunable/sysctl variable. 9453 */ 9454 if (lun != NULL) 9455 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9456 lun->be_lun->lun_type; 9457 else if (ctl_softc->inquiry_pq_no_lun == 0) 9458 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9459 else 9460 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9461 9462 /* RMB in byte 2 is 0 */ 9463 inq_ptr->version = SCSI_REV_SPC3; 9464 9465 /* 9466 * According to SAM-3, even if a device only supports a single 9467 * level of LUN addressing, it should still set the HISUP bit: 9468 * 9469 * 4.9.1 Logical unit numbers overview 9470 * 9471 * All logical unit number formats described in this standard are 9472 * hierarchical in structure even when only a single level in that 9473 * hierarchy is used. The HISUP bit shall be set to one in the 9474 * standard INQUIRY data (see SPC-2) when any logical unit number 9475 * format described in this standard is used. Non-hierarchical 9476 * formats are outside the scope of this standard. 9477 * 9478 * Therefore we set the HiSup bit here. 9479 * 9480 * The reponse format is 2, per SPC-3. 9481 */ 9482 inq_ptr->response_format = SID_HiSup | 2; 9483 9484 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9485 CTL_DEBUG_PRINT(("additional_length = %d\n", 9486 inq_ptr->additional_length)); 9487 9488 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9489 /* 16 bit addressing */ 9490 if (is_fc == 0) 9491 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9492 /* XXX set the SID_MultiP bit here if we're actually going to 9493 respond on multiple ports */ 9494 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9495 9496 /* 16 bit data bus, synchronous transfers */ 9497 /* XXX these flags don't apply for FC */ 9498 if (is_fc == 0) 9499 inq_ptr->flags = SID_WBus16 | SID_Sync; 9500 /* 9501 * XXX KDM do we want to support tagged queueing on the control 9502 * device at all? 9503 */ 9504 if ((lun == NULL) 9505 || (lun->be_lun->lun_type != T_PROCESSOR)) 9506 inq_ptr->flags |= SID_CmdQue; 9507 /* 9508 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9509 * We have 8 bytes for the vendor name, and 16 bytes for the device 9510 * name and 4 bytes for the revision. 9511 */ 9512 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9513 if (lun == NULL) { 9514 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9515 } else { 9516 switch (lun->be_lun->lun_type) { 9517 case T_DIRECT: 9518 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9519 break; 9520 case T_PROCESSOR: 9521 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9522 break; 9523 default: 9524 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9525 break; 9526 } 9527 } 9528 9529 /* 9530 * XXX make this a macro somewhere so it automatically gets 9531 * incremented when we make changes. 9532 */ 9533 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9534 9535 /* 9536 * For parallel SCSI, we support double transition and single 9537 * transition clocking. We also support QAS (Quick Arbitration 9538 * and Selection) and Information Unit transfers on both the 9539 * control and array devices. 9540 */ 9541 if (is_fc == 0) 9542 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9543 SID_SPI_IUS; 9544 9545 /* SAM-3 */ 9546 scsi_ulto2b(0x0060, inq_ptr->version1); 9547 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9548 scsi_ulto2b(0x0300, inq_ptr->version2); 9549 if (is_fc) { 9550 /* FCP-2 ANSI INCITS.350:2003 */ 9551 scsi_ulto2b(0x0917, inq_ptr->version3); 9552 } else { 9553 /* SPI-4 ANSI INCITS.362:200x */ 9554 scsi_ulto2b(0x0B56, inq_ptr->version3); 9555 } 9556 9557 if (lun == NULL) { 9558 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9559 scsi_ulto2b(0x0320, inq_ptr->version4); 9560 } else { 9561 switch (lun->be_lun->lun_type) { 9562 case T_DIRECT: 9563 /* 9564 * SBC-2 (no version claimed) XXX should we claim a 9565 * version? 9566 */ 9567 scsi_ulto2b(0x0320, inq_ptr->version4); 9568 break; 9569 case T_PROCESSOR: 9570 default: 9571 break; 9572 } 9573 } 9574 9575 ctsio->scsi_status = SCSI_STATUS_OK; 9576 if (ctsio->kern_data_len > 0) { 9577 ctsio->be_move_done = ctl_config_move_done; 9578 ctl_datamove((union ctl_io *)ctsio); 9579 } else { 9580 ctsio->io_hdr.status = CTL_SUCCESS; 9581 ctl_done((union ctl_io *)ctsio); 9582 } 9583 9584 return (CTL_RETVAL_COMPLETE); 9585 } 9586 9587 int 9588 ctl_inquiry(struct ctl_scsiio *ctsio) 9589 { 9590 struct scsi_inquiry *cdb; 9591 int retval; 9592 9593 cdb = (struct scsi_inquiry *)ctsio->cdb; 9594 9595 retval = 0; 9596 9597 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9598 9599 /* 9600 * Right now, we don't support the CmdDt inquiry information. 9601 * This would be nice to support in the future. When we do 9602 * support it, we should change this test so that it checks to make 9603 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9604 */ 9605 #ifdef notyet 9606 if (((cdb->byte2 & SI_EVPD) 9607 && (cdb->byte2 & SI_CMDDT))) 9608 #endif 9609 if (cdb->byte2 & SI_CMDDT) { 9610 /* 9611 * Point to the SI_CMDDT bit. We might change this 9612 * when we support SI_CMDDT, but since both bits would be 9613 * "wrong", this should probably just stay as-is then. 9614 */ 9615 ctl_set_invalid_field(ctsio, 9616 /*sks_valid*/ 1, 9617 /*command*/ 1, 9618 /*field*/ 1, 9619 /*bit_valid*/ 1, 9620 /*bit*/ 1); 9621 ctl_done((union ctl_io *)ctsio); 9622 return (CTL_RETVAL_COMPLETE); 9623 } 9624 if (cdb->byte2 & SI_EVPD) 9625 retval = ctl_inquiry_evpd(ctsio); 9626 #ifdef notyet 9627 else if (cdb->byte2 & SI_CMDDT) 9628 retval = ctl_inquiry_cmddt(ctsio); 9629 #endif 9630 else 9631 retval = ctl_inquiry_std(ctsio); 9632 9633 return (retval); 9634 } 9635 9636 /* 9637 * For known CDB types, parse the LBA and length. 9638 */ 9639 static int 9640 ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9641 { 9642 if (io->io_hdr.io_type != CTL_IO_SCSI) 9643 return (1); 9644 9645 switch (io->scsiio.cdb[0]) { 9646 case READ_6: 9647 case WRITE_6: { 9648 struct scsi_rw_6 *cdb; 9649 9650 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9651 9652 *lba = scsi_3btoul(cdb->addr); 9653 /* only 5 bits are valid in the most significant address byte */ 9654 *lba &= 0x1fffff; 9655 *len = cdb->length; 9656 break; 9657 } 9658 case READ_10: 9659 case WRITE_10: { 9660 struct scsi_rw_10 *cdb; 9661 9662 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9663 9664 *lba = scsi_4btoul(cdb->addr); 9665 *len = scsi_2btoul(cdb->length); 9666 break; 9667 } 9668 case WRITE_VERIFY_10: { 9669 struct scsi_write_verify_10 *cdb; 9670 9671 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9672 9673 *lba = scsi_4btoul(cdb->addr); 9674 *len = scsi_2btoul(cdb->length); 9675 break; 9676 } 9677 case READ_12: 9678 case WRITE_12: { 9679 struct scsi_rw_12 *cdb; 9680 9681 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9682 9683 *lba = scsi_4btoul(cdb->addr); 9684 *len = scsi_4btoul(cdb->length); 9685 break; 9686 } 9687 case WRITE_VERIFY_12: { 9688 struct scsi_write_verify_12 *cdb; 9689 9690 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9691 9692 *lba = scsi_4btoul(cdb->addr); 9693 *len = scsi_4btoul(cdb->length); 9694 break; 9695 } 9696 case READ_16: 9697 case WRITE_16: { 9698 struct scsi_rw_16 *cdb; 9699 9700 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9701 9702 *lba = scsi_8btou64(cdb->addr); 9703 *len = scsi_4btoul(cdb->length); 9704 break; 9705 } 9706 case WRITE_VERIFY_16: { 9707 struct scsi_write_verify_16 *cdb; 9708 9709 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9710 9711 9712 *lba = scsi_8btou64(cdb->addr); 9713 *len = scsi_4btoul(cdb->length); 9714 break; 9715 } 9716 default: 9717 return (1); 9718 break; /* NOTREACHED */ 9719 } 9720 9721 return (0); 9722 } 9723 9724 static ctl_action 9725 ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 9726 { 9727 uint64_t endlba1, endlba2; 9728 9729 endlba1 = lba1 + len1 - 1; 9730 endlba2 = lba2 + len2 - 1; 9731 9732 if ((endlba1 < lba2) 9733 || (endlba2 < lba1)) 9734 return (CTL_ACTION_PASS); 9735 else 9736 return (CTL_ACTION_BLOCK); 9737 } 9738 9739 static ctl_action 9740 ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 9741 { 9742 uint64_t lba1, lba2; 9743 uint32_t len1, len2; 9744 int retval; 9745 9746 retval = ctl_get_lba_len(io1, &lba1, &len1); 9747 if (retval != 0) 9748 return (CTL_ACTION_ERROR); 9749 9750 retval = ctl_get_lba_len(io2, &lba2, &len2); 9751 if (retval != 0) 9752 return (CTL_ACTION_ERROR); 9753 9754 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 9755 } 9756 9757 static ctl_action 9758 ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 9759 { 9760 struct ctl_cmd_entry *pending_entry, *ooa_entry; 9761 ctl_serialize_action *serialize_row; 9762 9763 /* 9764 * The initiator attempted multiple untagged commands at the same 9765 * time. Can't do that. 9766 */ 9767 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9768 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9769 && ((pending_io->io_hdr.nexus.targ_port == 9770 ooa_io->io_hdr.nexus.targ_port) 9771 && (pending_io->io_hdr.nexus.initid.id == 9772 ooa_io->io_hdr.nexus.initid.id)) 9773 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9774 return (CTL_ACTION_OVERLAP); 9775 9776 /* 9777 * The initiator attempted to send multiple tagged commands with 9778 * the same ID. (It's fine if different initiators have the same 9779 * tag ID.) 9780 * 9781 * Even if all of those conditions are true, we don't kill the I/O 9782 * if the command ahead of us has been aborted. We won't end up 9783 * sending it to the FETD, and it's perfectly legal to resend a 9784 * command with the same tag number as long as the previous 9785 * instance of this tag number has been aborted somehow. 9786 */ 9787 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9788 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9789 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 9790 && ((pending_io->io_hdr.nexus.targ_port == 9791 ooa_io->io_hdr.nexus.targ_port) 9792 && (pending_io->io_hdr.nexus.initid.id == 9793 ooa_io->io_hdr.nexus.initid.id)) 9794 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9795 return (CTL_ACTION_OVERLAP_TAG); 9796 9797 /* 9798 * If we get a head of queue tag, SAM-3 says that we should 9799 * immediately execute it. 9800 * 9801 * What happens if this command would normally block for some other 9802 * reason? e.g. a request sense with a head of queue tag 9803 * immediately after a write. Normally that would block, but this 9804 * will result in its getting executed immediately... 9805 * 9806 * We currently return "pass" instead of "skip", so we'll end up 9807 * going through the rest of the queue to check for overlapped tags. 9808 * 9809 * XXX KDM check for other types of blockage first?? 9810 */ 9811 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9812 return (CTL_ACTION_PASS); 9813 9814 /* 9815 * Ordered tags have to block until all items ahead of them 9816 * have completed. If we get called with an ordered tag, we always 9817 * block, if something else is ahead of us in the queue. 9818 */ 9819 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 9820 return (CTL_ACTION_BLOCK); 9821 9822 /* 9823 * Simple tags get blocked until all head of queue and ordered tags 9824 * ahead of them have completed. I'm lumping untagged commands in 9825 * with simple tags here. XXX KDM is that the right thing to do? 9826 */ 9827 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9828 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 9829 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9830 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 9831 return (CTL_ACTION_BLOCK); 9832 9833 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 9834 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 9835 9836 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 9837 9838 switch (serialize_row[pending_entry->seridx]) { 9839 case CTL_SER_BLOCK: 9840 return (CTL_ACTION_BLOCK); 9841 break; /* NOTREACHED */ 9842 case CTL_SER_EXTENT: 9843 return (ctl_extent_check(pending_io, ooa_io)); 9844 break; /* NOTREACHED */ 9845 case CTL_SER_PASS: 9846 return (CTL_ACTION_PASS); 9847 break; /* NOTREACHED */ 9848 case CTL_SER_SKIP: 9849 return (CTL_ACTION_SKIP); 9850 break; 9851 default: 9852 panic("invalid serialization value %d", 9853 serialize_row[pending_entry->seridx]); 9854 break; /* NOTREACHED */ 9855 } 9856 9857 return (CTL_ACTION_ERROR); 9858 } 9859 9860 /* 9861 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 9862 * Assumptions: 9863 * - caller holds ctl_lock 9864 * - pending_io is generally either incoming, or on the blocked queue 9865 * - starting I/O is the I/O we want to start the check with. 9866 */ 9867 static ctl_action 9868 ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 9869 union ctl_io *starting_io) 9870 { 9871 union ctl_io *ooa_io; 9872 ctl_action action; 9873 9874 /* 9875 * Run back along the OOA queue, starting with the current 9876 * blocked I/O and going through every I/O before it on the 9877 * queue. If starting_io is NULL, we'll just end up returning 9878 * CTL_ACTION_PASS. 9879 */ 9880 for (ooa_io = starting_io; ooa_io != NULL; 9881 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 9882 ooa_links)){ 9883 9884 /* 9885 * This routine just checks to see whether 9886 * cur_blocked is blocked by ooa_io, which is ahead 9887 * of it in the queue. It doesn't queue/dequeue 9888 * cur_blocked. 9889 */ 9890 action = ctl_check_for_blockage(pending_io, ooa_io); 9891 switch (action) { 9892 case CTL_ACTION_BLOCK: 9893 case CTL_ACTION_OVERLAP: 9894 case CTL_ACTION_OVERLAP_TAG: 9895 case CTL_ACTION_SKIP: 9896 case CTL_ACTION_ERROR: 9897 return (action); 9898 break; /* NOTREACHED */ 9899 case CTL_ACTION_PASS: 9900 break; 9901 default: 9902 panic("invalid action %d", action); 9903 break; /* NOTREACHED */ 9904 } 9905 } 9906 9907 return (CTL_ACTION_PASS); 9908 } 9909 9910 /* 9911 * Assumptions: 9912 * - An I/O has just completed, and has been removed from the per-LUN OOA 9913 * queue, so some items on the blocked queue may now be unblocked. 9914 * - The caller holds ctl_softc->ctl_lock 9915 */ 9916 static int 9917 ctl_check_blocked(struct ctl_lun *lun) 9918 { 9919 union ctl_io *cur_blocked, *next_blocked; 9920 9921 /* 9922 * Run forward from the head of the blocked queue, checking each 9923 * entry against the I/Os prior to it on the OOA queue to see if 9924 * there is still any blockage. 9925 * 9926 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 9927 * with our removing a variable on it while it is traversing the 9928 * list. 9929 */ 9930 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 9931 cur_blocked != NULL; cur_blocked = next_blocked) { 9932 union ctl_io *prev_ooa; 9933 ctl_action action; 9934 9935 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 9936 blocked_links); 9937 9938 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 9939 ctl_ooaq, ooa_links); 9940 9941 /* 9942 * If cur_blocked happens to be the first item in the OOA 9943 * queue now, prev_ooa will be NULL, and the action 9944 * returned will just be CTL_ACTION_PASS. 9945 */ 9946 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 9947 9948 switch (action) { 9949 case CTL_ACTION_BLOCK: 9950 /* Nothing to do here, still blocked */ 9951 break; 9952 case CTL_ACTION_OVERLAP: 9953 case CTL_ACTION_OVERLAP_TAG: 9954 /* 9955 * This shouldn't happen! In theory we've already 9956 * checked this command for overlap... 9957 */ 9958 break; 9959 case CTL_ACTION_PASS: 9960 case CTL_ACTION_SKIP: { 9961 struct ctl_softc *softc; 9962 struct ctl_cmd_entry *entry; 9963 uint32_t initidx; 9964 uint8_t opcode; 9965 int isc_retval; 9966 9967 /* 9968 * The skip case shouldn't happen, this transaction 9969 * should have never made it onto the blocked queue. 9970 */ 9971 /* 9972 * This I/O is no longer blocked, we can remove it 9973 * from the blocked queue. Since this is a TAILQ 9974 * (doubly linked list), we can do O(1) removals 9975 * from any place on the list. 9976 */ 9977 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 9978 blocked_links); 9979 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 9980 9981 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 9982 /* 9983 * Need to send IO back to original side to 9984 * run 9985 */ 9986 union ctl_ha_msg msg_info; 9987 9988 msg_info.hdr.original_sc = 9989 cur_blocked->io_hdr.original_sc; 9990 msg_info.hdr.serializing_sc = cur_blocked; 9991 msg_info.hdr.msg_type = CTL_MSG_R2R; 9992 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 9993 &msg_info, sizeof(msg_info), 0)) > 9994 CTL_HA_STATUS_SUCCESS) { 9995 printf("CTL:Check Blocked error from " 9996 "ctl_ha_msg_send %d\n", 9997 isc_retval); 9998 } 9999 break; 10000 } 10001 opcode = cur_blocked->scsiio.cdb[0]; 10002 entry = &ctl_cmd_table[opcode]; 10003 softc = control_softc; 10004 10005 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10006 10007 /* 10008 * Check this I/O for LUN state changes that may 10009 * have happened while this command was blocked. 10010 * The LUN state may have been changed by a command 10011 * ahead of us in the queue, so we need to re-check 10012 * for any states that can be caused by SCSI 10013 * commands. 10014 */ 10015 if (ctl_scsiio_lun_check(softc, lun, entry, 10016 &cur_blocked->scsiio) == 0) { 10017 cur_blocked->io_hdr.flags |= 10018 CTL_FLAG_IS_WAS_ON_RTR; 10019 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 10020 &cur_blocked->io_hdr, links); 10021 /* 10022 * In the non CTL_DONE_THREAD case, we need 10023 * to wake up the work thread here. When 10024 * we're processing completed requests from 10025 * the work thread context, we'll pop back 10026 * around and end up pulling things off the 10027 * RtR queue. When we aren't processing 10028 * things from the work thread context, 10029 * though, we won't ever check the RtR queue. 10030 * So we need to wake up the thread to clear 10031 * things off the queue. Otherwise this 10032 * transaction will just sit on the RtR queue 10033 * until a new I/O comes in. (Which may or 10034 * may not happen...) 10035 */ 10036 #ifndef CTL_DONE_THREAD 10037 ctl_wakeup_thread(); 10038 #endif 10039 } else 10040 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10041 break; 10042 } 10043 default: 10044 /* 10045 * This probably shouldn't happen -- we shouldn't 10046 * get CTL_ACTION_ERROR, or anything else. 10047 */ 10048 break; 10049 } 10050 } 10051 10052 return (CTL_RETVAL_COMPLETE); 10053 } 10054 10055 /* 10056 * This routine (with one exception) checks LUN flags that can be set by 10057 * commands ahead of us in the OOA queue. These flags have to be checked 10058 * when a command initially comes in, and when we pull a command off the 10059 * blocked queue and are preparing to execute it. The reason we have to 10060 * check these flags for commands on the blocked queue is that the LUN 10061 * state may have been changed by a command ahead of us while we're on the 10062 * blocked queue. 10063 * 10064 * Ordering is somewhat important with these checks, so please pay 10065 * careful attention to the placement of any new checks. 10066 */ 10067 static int 10068 ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10069 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10070 { 10071 int retval; 10072 10073 retval = 0; 10074 10075 /* 10076 * If this shelf is a secondary shelf controller, we have to reject 10077 * any media access commands. 10078 */ 10079 #if 0 10080 /* No longer needed for HA */ 10081 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10082 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10083 ctl_set_lun_standby(ctsio); 10084 retval = 1; 10085 goto bailout; 10086 } 10087 #endif 10088 10089 /* 10090 * Check for a reservation conflict. If this command isn't allowed 10091 * even on reserved LUNs, and if this initiator isn't the one who 10092 * reserved us, reject the command with a reservation conflict. 10093 */ 10094 if ((lun->flags & CTL_LUN_RESERVED) 10095 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10096 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10097 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10098 || (ctsio->io_hdr.nexus.targ_target.id != 10099 lun->rsv_nexus.targ_target.id)) { 10100 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10101 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10102 retval = 1; 10103 goto bailout; 10104 } 10105 } 10106 10107 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10108 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10109 uint32_t residx; 10110 10111 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10112 /* 10113 * if we aren't registered or it's a res holder type 10114 * reservation and this isn't the res holder then set a 10115 * conflict. 10116 * NOTE: Commands which might be allowed on write exclusive 10117 * type reservations are checked in the particular command 10118 * for a conflict. Read and SSU are the only ones. 10119 */ 10120 if (!lun->per_res[residx].registered 10121 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10122 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10123 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10124 retval = 1; 10125 goto bailout; 10126 } 10127 10128 } 10129 10130 if ((lun->flags & CTL_LUN_OFFLINE) 10131 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10132 ctl_set_lun_not_ready(ctsio); 10133 retval = 1; 10134 goto bailout; 10135 } 10136 10137 /* 10138 * If the LUN is stopped, see if this particular command is allowed 10139 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10140 */ 10141 if ((lun->flags & CTL_LUN_STOPPED) 10142 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10143 /* "Logical unit not ready, initializing cmd. required" */ 10144 ctl_set_lun_stopped(ctsio); 10145 retval = 1; 10146 goto bailout; 10147 } 10148 10149 if ((lun->flags & CTL_LUN_INOPERABLE) 10150 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10151 /* "Medium format corrupted" */ 10152 ctl_set_medium_format_corrupted(ctsio); 10153 retval = 1; 10154 goto bailout; 10155 } 10156 10157 bailout: 10158 return (retval); 10159 10160 } 10161 10162 static void 10163 ctl_failover_io(union ctl_io *io, int have_lock) 10164 { 10165 ctl_set_busy(&io->scsiio); 10166 ctl_done_lock(io, have_lock); 10167 } 10168 10169 static void 10170 ctl_failover(void) 10171 { 10172 struct ctl_lun *lun; 10173 struct ctl_softc *ctl_softc; 10174 union ctl_io *next_io, *pending_io; 10175 union ctl_io *io; 10176 int lun_idx; 10177 int i; 10178 10179 ctl_softc = control_softc; 10180 10181 mtx_lock(&ctl_softc->ctl_lock); 10182 /* 10183 * Remove any cmds from the other SC from the rtr queue. These 10184 * will obviously only be for LUNs for which we're the primary. 10185 * We can't send status or get/send data for these commands. 10186 * Since they haven't been executed yet, we can just remove them. 10187 * We'll either abort them or delete them below, depending on 10188 * which HA mode we're in. 10189 */ 10190 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10191 io != NULL; io = next_io) { 10192 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10193 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10194 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10195 ctl_io_hdr, links); 10196 } 10197 10198 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10199 lun = ctl_softc->ctl_luns[lun_idx]; 10200 if (lun==NULL) 10201 continue; 10202 10203 /* 10204 * Processor LUNs are primary on both sides. 10205 * XXX will this always be true? 10206 */ 10207 if (lun->be_lun->lun_type == T_PROCESSOR) 10208 continue; 10209 10210 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10211 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10212 printf("FAILOVER: primary lun %d\n", lun_idx); 10213 /* 10214 * Remove all commands from the other SC. First from the 10215 * blocked queue then from the ooa queue. Once we have 10216 * removed them. Call ctl_check_blocked to see if there 10217 * is anything that can run. 10218 */ 10219 for (io = (union ctl_io *)TAILQ_FIRST( 10220 &lun->blocked_queue); io != NULL; io = next_io) { 10221 10222 next_io = (union ctl_io *)TAILQ_NEXT( 10223 &io->io_hdr, blocked_links); 10224 10225 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10226 TAILQ_REMOVE(&lun->blocked_queue, 10227 &io->io_hdr,blocked_links); 10228 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10229 TAILQ_REMOVE(&lun->ooa_queue, 10230 &io->io_hdr, ooa_links); 10231 10232 ctl_free_io_internal(io, 1); 10233 } 10234 } 10235 10236 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10237 io != NULL; io = next_io) { 10238 10239 next_io = (union ctl_io *)TAILQ_NEXT( 10240 &io->io_hdr, ooa_links); 10241 10242 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10243 10244 TAILQ_REMOVE(&lun->ooa_queue, 10245 &io->io_hdr, 10246 ooa_links); 10247 10248 ctl_free_io_internal(io, 1); 10249 } 10250 } 10251 ctl_check_blocked(lun); 10252 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10253 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10254 10255 printf("FAILOVER: primary lun %d\n", lun_idx); 10256 /* 10257 * Abort all commands from the other SC. We can't 10258 * send status back for them now. These should get 10259 * cleaned up when they are completed or come out 10260 * for a datamove operation. 10261 */ 10262 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10263 io != NULL; io = next_io) { 10264 next_io = (union ctl_io *)TAILQ_NEXT( 10265 &io->io_hdr, ooa_links); 10266 10267 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10268 io->io_hdr.flags |= CTL_FLAG_ABORT; 10269 } 10270 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10271 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10272 10273 printf("FAILOVER: secondary lun %d\n", lun_idx); 10274 10275 lun->flags |= CTL_LUN_PRIMARY_SC; 10276 10277 /* 10278 * We send all I/O that was sent to this controller 10279 * and redirected to the other side back with 10280 * busy status, and have the initiator retry it. 10281 * Figuring out how much data has been transferred, 10282 * etc. and picking up where we left off would be 10283 * very tricky. 10284 * 10285 * XXX KDM need to remove I/O from the blocked 10286 * queue as well! 10287 */ 10288 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10289 &lun->ooa_queue); pending_io != NULL; 10290 pending_io = next_io) { 10291 10292 next_io = (union ctl_io *)TAILQ_NEXT( 10293 &pending_io->io_hdr, ooa_links); 10294 10295 pending_io->io_hdr.flags &= 10296 ~CTL_FLAG_SENT_2OTHER_SC; 10297 10298 if (pending_io->io_hdr.flags & 10299 CTL_FLAG_IO_ACTIVE) { 10300 pending_io->io_hdr.flags |= 10301 CTL_FLAG_FAILOVER; 10302 } else { 10303 ctl_set_busy(&pending_io->scsiio); 10304 ctl_done_lock(pending_io, 10305 /*have_lock*/1); 10306 } 10307 } 10308 10309 /* 10310 * Build Unit Attention 10311 */ 10312 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10313 lun->pending_sense[i].ua_pending |= 10314 CTL_UA_ASYM_ACC_CHANGE; 10315 } 10316 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10317 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10318 printf("FAILOVER: secondary lun %d\n", lun_idx); 10319 /* 10320 * if the first io on the OOA is not on the RtR queue 10321 * add it. 10322 */ 10323 lun->flags |= CTL_LUN_PRIMARY_SC; 10324 10325 pending_io = (union ctl_io *)TAILQ_FIRST( 10326 &lun->ooa_queue); 10327 if (pending_io==NULL) { 10328 printf("Nothing on OOA queue\n"); 10329 continue; 10330 } 10331 10332 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10333 if ((pending_io->io_hdr.flags & 10334 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10335 pending_io->io_hdr.flags |= 10336 CTL_FLAG_IS_WAS_ON_RTR; 10337 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10338 &pending_io->io_hdr, links); 10339 } 10340 #if 0 10341 else 10342 { 10343 printf("Tag 0x%04x is running\n", 10344 pending_io->scsiio.tag_num); 10345 } 10346 #endif 10347 10348 next_io = (union ctl_io *)TAILQ_NEXT( 10349 &pending_io->io_hdr, ooa_links); 10350 for (pending_io=next_io; pending_io != NULL; 10351 pending_io = next_io) { 10352 pending_io->io_hdr.flags &= 10353 ~CTL_FLAG_SENT_2OTHER_SC; 10354 next_io = (union ctl_io *)TAILQ_NEXT( 10355 &pending_io->io_hdr, ooa_links); 10356 if (pending_io->io_hdr.flags & 10357 CTL_FLAG_IS_WAS_ON_RTR) { 10358 #if 0 10359 printf("Tag 0x%04x is running\n", 10360 pending_io->scsiio.tag_num); 10361 #endif 10362 continue; 10363 } 10364 10365 switch (ctl_check_ooa(lun, pending_io, 10366 (union ctl_io *)TAILQ_PREV( 10367 &pending_io->io_hdr, ctl_ooaq, 10368 ooa_links))) { 10369 10370 case CTL_ACTION_BLOCK: 10371 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10372 &pending_io->io_hdr, 10373 blocked_links); 10374 pending_io->io_hdr.flags |= 10375 CTL_FLAG_BLOCKED; 10376 break; 10377 case CTL_ACTION_PASS: 10378 case CTL_ACTION_SKIP: 10379 pending_io->io_hdr.flags |= 10380 CTL_FLAG_IS_WAS_ON_RTR; 10381 STAILQ_INSERT_TAIL( 10382 &ctl_softc->rtr_queue, 10383 &pending_io->io_hdr, links); 10384 break; 10385 case CTL_ACTION_OVERLAP: 10386 ctl_set_overlapped_cmd( 10387 (struct ctl_scsiio *)pending_io); 10388 ctl_done_lock(pending_io, 10389 /*have_lock*/ 1); 10390 break; 10391 case CTL_ACTION_OVERLAP_TAG: 10392 ctl_set_overlapped_tag( 10393 (struct ctl_scsiio *)pending_io, 10394 pending_io->scsiio.tag_num & 0xff); 10395 ctl_done_lock(pending_io, 10396 /*have_lock*/ 1); 10397 break; 10398 case CTL_ACTION_ERROR: 10399 default: 10400 ctl_set_internal_failure( 10401 (struct ctl_scsiio *)pending_io, 10402 0, // sks_valid 10403 0); //retry count 10404 ctl_done_lock(pending_io, 10405 /*have_lock*/ 1); 10406 break; 10407 } 10408 } 10409 10410 /* 10411 * Build Unit Attention 10412 */ 10413 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10414 lun->pending_sense[i].ua_pending |= 10415 CTL_UA_ASYM_ACC_CHANGE; 10416 } 10417 } else { 10418 panic("Unhandled HA mode failover, LUN flags = %#x, " 10419 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10420 } 10421 } 10422 ctl_pause_rtr = 0; 10423 mtx_unlock(&ctl_softc->ctl_lock); 10424 } 10425 10426 static int 10427 ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10428 { 10429 struct ctl_lun *lun; 10430 struct ctl_cmd_entry *entry; 10431 uint8_t opcode; 10432 uint32_t initidx; 10433 int retval; 10434 10435 retval = 0; 10436 10437 lun = NULL; 10438 10439 opcode = ctsio->cdb[0]; 10440 10441 mtx_lock(&ctl_softc->ctl_lock); 10442 10443 if ((ctsio->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10444 && (ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun] != NULL)) { 10445 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 10446 /* 10447 * If the LUN is invalid, pretend that it doesn't exist. 10448 * It will go away as soon as all pending I/O has been 10449 * completed. 10450 */ 10451 if (lun->flags & CTL_LUN_DISABLED) { 10452 lun = NULL; 10453 } else { 10454 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10455 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10456 lun->be_lun; 10457 if (lun->be_lun->lun_type == T_PROCESSOR) { 10458 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10459 } 10460 } 10461 } else { 10462 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10463 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10464 } 10465 10466 entry = &ctl_cmd_table[opcode]; 10467 10468 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10469 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10470 10471 /* 10472 * Check to see whether we can send this command to LUNs that don't 10473 * exist. This should pretty much only be the case for inquiry 10474 * and request sense. Further checks, below, really require having 10475 * a LUN, so we can't really check the command anymore. Just put 10476 * it on the rtr queue. 10477 */ 10478 if (lun == NULL) { 10479 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10480 goto queue_rtr; 10481 10482 ctl_set_unsupported_lun(ctsio); 10483 mtx_unlock(&ctl_softc->ctl_lock); 10484 ctl_done((union ctl_io *)ctsio); 10485 goto bailout; 10486 } else { 10487 /* 10488 * Every I/O goes into the OOA queue for a particular LUN, and 10489 * stays there until completion. 10490 */ 10491 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10492 10493 /* 10494 * Make sure we support this particular command on this LUN. 10495 * e.g., we don't support writes to the control LUN. 10496 */ 10497 switch (lun->be_lun->lun_type) { 10498 case T_PROCESSOR: 10499 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10500 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10501 == 0)) { 10502 ctl_set_invalid_opcode(ctsio); 10503 mtx_unlock(&ctl_softc->ctl_lock); 10504 ctl_done((union ctl_io *)ctsio); 10505 goto bailout; 10506 } 10507 break; 10508 case T_DIRECT: 10509 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10510 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10511 == 0)){ 10512 ctl_set_invalid_opcode(ctsio); 10513 mtx_unlock(&ctl_softc->ctl_lock); 10514 ctl_done((union ctl_io *)ctsio); 10515 goto bailout; 10516 } 10517 break; 10518 default: 10519 printf("Unsupported CTL LUN type %d\n", 10520 lun->be_lun->lun_type); 10521 panic("Unsupported CTL LUN type %d\n", 10522 lun->be_lun->lun_type); 10523 break; /* NOTREACHED */ 10524 } 10525 } 10526 10527 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10528 10529 /* 10530 * If we've got a request sense, it'll clear the contingent 10531 * allegiance condition. Otherwise, if we have a CA condition for 10532 * this initiator, clear it, because it sent down a command other 10533 * than request sense. 10534 */ 10535 if ((opcode != REQUEST_SENSE) 10536 && (ctl_is_set(lun->have_ca, initidx))) 10537 ctl_clear_mask(lun->have_ca, initidx); 10538 10539 /* 10540 * If the command has this flag set, it handles its own unit 10541 * attention reporting, we shouldn't do anything. Otherwise we 10542 * check for any pending unit attentions, and send them back to the 10543 * initiator. We only do this when a command initially comes in, 10544 * not when we pull it off the blocked queue. 10545 * 10546 * According to SAM-3, section 5.3.2, the order that things get 10547 * presented back to the host is basically unit attentions caused 10548 * by some sort of reset event, busy status, reservation conflicts 10549 * or task set full, and finally any other status. 10550 * 10551 * One issue here is that some of the unit attentions we report 10552 * don't fall into the "reset" category (e.g. "reported luns data 10553 * has changed"). So reporting it here, before the reservation 10554 * check, may be technically wrong. I guess the only thing to do 10555 * would be to check for and report the reset events here, and then 10556 * check for the other unit attention types after we check for a 10557 * reservation conflict. 10558 * 10559 * XXX KDM need to fix this 10560 */ 10561 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10562 ctl_ua_type ua_type; 10563 10564 ua_type = lun->pending_sense[initidx].ua_pending; 10565 if (ua_type != CTL_UA_NONE) { 10566 scsi_sense_data_type sense_format; 10567 10568 if (lun != NULL) 10569 sense_format = (lun->flags & 10570 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 10571 SSD_TYPE_FIXED; 10572 else 10573 sense_format = SSD_TYPE_FIXED; 10574 10575 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10576 sense_format); 10577 if (ua_type != CTL_UA_NONE) { 10578 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10579 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10580 CTL_AUTOSENSE; 10581 ctsio->sense_len = SSD_FULL_SIZE; 10582 lun->pending_sense[initidx].ua_pending &= 10583 ~ua_type; 10584 mtx_unlock(&ctl_softc->ctl_lock); 10585 ctl_done((union ctl_io *)ctsio); 10586 goto bailout; 10587 } 10588 } 10589 } 10590 10591 10592 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10593 mtx_unlock(&ctl_softc->ctl_lock); 10594 ctl_done((union ctl_io *)ctsio); 10595 goto bailout; 10596 } 10597 10598 /* 10599 * XXX CHD this is where we want to send IO to other side if 10600 * this LUN is secondary on this SC. We will need to make a copy 10601 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10602 * the copy we send as FROM_OTHER. 10603 * We also need to stuff the address of the original IO so we can 10604 * find it easily. Something similar will need be done on the other 10605 * side so when we are done we can find the copy. 10606 */ 10607 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10608 union ctl_ha_msg msg_info; 10609 int isc_retval; 10610 10611 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10612 10613 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10614 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10615 #if 0 10616 printf("1. ctsio %p\n", ctsio); 10617 #endif 10618 msg_info.hdr.serializing_sc = NULL; 10619 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10620 msg_info.scsi.tag_num = ctsio->tag_num; 10621 msg_info.scsi.tag_type = ctsio->tag_type; 10622 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10623 10624 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10625 10626 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10627 (void *)&msg_info, sizeof(msg_info), 0)) > 10628 CTL_HA_STATUS_SUCCESS) { 10629 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10630 isc_retval); 10631 printf("CTL:opcode is %x\n",opcode); 10632 } else { 10633 #if 0 10634 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10635 #endif 10636 } 10637 10638 /* 10639 * XXX KDM this I/O is off the incoming queue, but hasn't 10640 * been inserted on any other queue. We may need to come 10641 * up with a holding queue while we wait for serialization 10642 * so that we have an idea of what we're waiting for from 10643 * the other side. 10644 */ 10645 goto bailout_unlock; 10646 } 10647 10648 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10649 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10650 ctl_ooaq, ooa_links))) { 10651 case CTL_ACTION_BLOCK: 10652 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10653 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10654 blocked_links); 10655 goto bailout_unlock; 10656 break; /* NOTREACHED */ 10657 case CTL_ACTION_PASS: 10658 case CTL_ACTION_SKIP: 10659 goto queue_rtr; 10660 break; /* NOTREACHED */ 10661 case CTL_ACTION_OVERLAP: 10662 ctl_set_overlapped_cmd(ctsio); 10663 mtx_unlock(&ctl_softc->ctl_lock); 10664 ctl_done((union ctl_io *)ctsio); 10665 goto bailout; 10666 break; /* NOTREACHED */ 10667 case CTL_ACTION_OVERLAP_TAG: 10668 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10669 mtx_unlock(&ctl_softc->ctl_lock); 10670 ctl_done((union ctl_io *)ctsio); 10671 goto bailout; 10672 break; /* NOTREACHED */ 10673 case CTL_ACTION_ERROR: 10674 default: 10675 ctl_set_internal_failure(ctsio, 10676 /*sks_valid*/ 0, 10677 /*retry_count*/ 0); 10678 mtx_unlock(&ctl_softc->ctl_lock); 10679 ctl_done((union ctl_io *)ctsio); 10680 goto bailout; 10681 break; /* NOTREACHED */ 10682 } 10683 10684 goto bailout_unlock; 10685 10686 queue_rtr: 10687 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10688 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10689 10690 bailout_unlock: 10691 mtx_unlock(&ctl_softc->ctl_lock); 10692 10693 bailout: 10694 return (retval); 10695 } 10696 10697 static int 10698 ctl_scsiio(struct ctl_scsiio *ctsio) 10699 { 10700 int retval; 10701 struct ctl_cmd_entry *entry; 10702 10703 retval = CTL_RETVAL_COMPLETE; 10704 10705 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10706 10707 entry = &ctl_cmd_table[ctsio->cdb[0]]; 10708 10709 /* 10710 * If this I/O has been aborted, just send it straight to 10711 * ctl_done() without executing it. 10712 */ 10713 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 10714 ctl_done((union ctl_io *)ctsio); 10715 goto bailout; 10716 } 10717 10718 /* 10719 * All the checks should have been handled by ctl_scsiio_precheck(). 10720 * We should be clear now to just execute the I/O. 10721 */ 10722 retval = entry->execute(ctsio); 10723 10724 bailout: 10725 return (retval); 10726 } 10727 10728 /* 10729 * Since we only implement one target right now, a bus reset simply resets 10730 * our single target. 10731 */ 10732 static int 10733 ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 10734 { 10735 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 10736 } 10737 10738 static int 10739 ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 10740 ctl_ua_type ua_type) 10741 { 10742 struct ctl_lun *lun; 10743 int retval; 10744 10745 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 10746 union ctl_ha_msg msg_info; 10747 10748 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10749 msg_info.hdr.nexus = io->io_hdr.nexus; 10750 if (ua_type==CTL_UA_TARG_RESET) 10751 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 10752 else 10753 msg_info.task.task_action = CTL_TASK_BUS_RESET; 10754 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 10755 msg_info.hdr.original_sc = NULL; 10756 msg_info.hdr.serializing_sc = NULL; 10757 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10758 (void *)&msg_info, sizeof(msg_info), 0)) { 10759 } 10760 } 10761 retval = 0; 10762 10763 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 10764 retval += ctl_lun_reset(lun, io, ua_type); 10765 10766 return (retval); 10767 } 10768 10769 /* 10770 * The LUN should always be set. The I/O is optional, and is used to 10771 * distinguish between I/Os sent by this initiator, and by other 10772 * initiators. We set unit attention for initiators other than this one. 10773 * SAM-3 is vague on this point. It does say that a unit attention should 10774 * be established for other initiators when a LUN is reset (see section 10775 * 5.7.3), but it doesn't specifically say that the unit attention should 10776 * be established for this particular initiator when a LUN is reset. Here 10777 * is the relevant text, from SAM-3 rev 8: 10778 * 10779 * 5.7.2 When a SCSI initiator port aborts its own tasks 10780 * 10781 * When a SCSI initiator port causes its own task(s) to be aborted, no 10782 * notification that the task(s) have been aborted shall be returned to 10783 * the SCSI initiator port other than the completion response for the 10784 * command or task management function action that caused the task(s) to 10785 * be aborted and notification(s) associated with related effects of the 10786 * action (e.g., a reset unit attention condition). 10787 * 10788 * XXX KDM for now, we're setting unit attention for all initiators. 10789 */ 10790 static int 10791 ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 10792 { 10793 union ctl_io *xio; 10794 #if 0 10795 uint32_t initindex; 10796 #endif 10797 int i; 10798 10799 /* 10800 * Run through the OOA queue and abort each I/O. 10801 */ 10802 #if 0 10803 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10804 #endif 10805 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10806 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10807 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10808 } 10809 10810 /* 10811 * This version sets unit attention for every 10812 */ 10813 #if 0 10814 initindex = ctl_get_initindex(&io->io_hdr.nexus); 10815 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10816 if (initindex == i) 10817 continue; 10818 lun->pending_sense[i].ua_pending |= ua_type; 10819 } 10820 #endif 10821 10822 /* 10823 * A reset (any kind, really) clears reservations established with 10824 * RESERVE/RELEASE. It does not clear reservations established 10825 * with PERSISTENT RESERVE OUT, but we don't support that at the 10826 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 10827 * reservations made with the RESERVE/RELEASE commands, because 10828 * those commands are obsolete in SPC-3. 10829 */ 10830 lun->flags &= ~CTL_LUN_RESERVED; 10831 10832 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10833 ctl_clear_mask(lun->have_ca, i); 10834 lun->pending_sense[i].ua_pending |= ua_type; 10835 } 10836 10837 return (0); 10838 } 10839 10840 static int 10841 ctl_abort_task(union ctl_io *io) 10842 { 10843 union ctl_io *xio; 10844 struct ctl_lun *lun; 10845 struct ctl_softc *ctl_softc; 10846 #if 0 10847 struct sbuf sb; 10848 char printbuf[128]; 10849 #endif 10850 int found; 10851 10852 ctl_softc = control_softc; 10853 found = 0; 10854 10855 /* 10856 * Look up the LUN. 10857 */ 10858 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10859 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 10860 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 10861 else 10862 goto bailout; 10863 10864 #if 0 10865 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 10866 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 10867 #endif 10868 10869 /* 10870 * Run through the OOA queue and attempt to find the given I/O. 10871 * The target port, initiator ID, tag type and tag number have to 10872 * match the values that we got from the initiator. If we have an 10873 * untagged command to abort, simply abort the first untagged command 10874 * we come to. We only allow one untagged command at a time of course. 10875 */ 10876 #if 0 10877 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10878 #endif 10879 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10880 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10881 #if 0 10882 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 10883 10884 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 10885 lun->lun, xio->scsiio.tag_num, 10886 xio->scsiio.tag_type, 10887 (xio->io_hdr.blocked_links.tqe_prev 10888 == NULL) ? "" : " BLOCKED", 10889 (xio->io_hdr.flags & 10890 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 10891 (xio->io_hdr.flags & 10892 CTL_FLAG_ABORT) ? " ABORT" : ""), 10893 (xio->io_hdr.flags & 10894 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : ""); 10895 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 10896 sbuf_finish(&sb); 10897 printf("%s\n", sbuf_data(&sb)); 10898 #endif 10899 10900 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 10901 && (xio->io_hdr.nexus.initid.id == 10902 io->io_hdr.nexus.initid.id)) { 10903 /* 10904 * If the abort says that the task is untagged, the 10905 * task in the queue must be untagged. Otherwise, 10906 * we just check to see whether the tag numbers 10907 * match. This is because the QLogic firmware 10908 * doesn't pass back the tag type in an abort 10909 * request. 10910 */ 10911 #if 0 10912 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 10913 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 10914 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 10915 #endif 10916 /* 10917 * XXX KDM we've got problems with FC, because it 10918 * doesn't send down a tag type with aborts. So we 10919 * can only really go by the tag number... 10920 * This may cause problems with parallel SCSI. 10921 * Need to figure that out!! 10922 */ 10923 if (xio->scsiio.tag_num == io->taskio.tag_num) { 10924 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10925 found = 1; 10926 if ((io->io_hdr.flags & 10927 CTL_FLAG_FROM_OTHER_SC) == 0 && 10928 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 10929 union ctl_ha_msg msg_info; 10930 10931 io->io_hdr.flags |= 10932 CTL_FLAG_SENT_2OTHER_SC; 10933 msg_info.hdr.nexus = io->io_hdr.nexus; 10934 msg_info.task.task_action = 10935 CTL_TASK_ABORT_TASK; 10936 msg_info.task.tag_num = 10937 io->taskio.tag_num; 10938 msg_info.task.tag_type = 10939 io->taskio.tag_type; 10940 msg_info.hdr.msg_type = 10941 CTL_MSG_MANAGE_TASKS; 10942 msg_info.hdr.original_sc = NULL; 10943 msg_info.hdr.serializing_sc = NULL; 10944 #if 0 10945 printf("Sent Abort to other side\n"); 10946 #endif 10947 if (CTL_HA_STATUS_SUCCESS != 10948 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10949 (void *)&msg_info, 10950 sizeof(msg_info), 0)) { 10951 } 10952 } 10953 #if 0 10954 printf("ctl_abort_task: found I/O to abort\n"); 10955 #endif 10956 break; 10957 } 10958 } 10959 } 10960 10961 bailout: 10962 10963 if (found == 0) { 10964 /* 10965 * This isn't really an error. It's entirely possible for 10966 * the abort and command completion to cross on the wire. 10967 * This is more of an informative/diagnostic error. 10968 */ 10969 #if 0 10970 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 10971 "%d:%d:%d:%d tag %d type %d\n", 10972 io->io_hdr.nexus.initid.id, 10973 io->io_hdr.nexus.targ_port, 10974 io->io_hdr.nexus.targ_target.id, 10975 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 10976 io->taskio.tag_type); 10977 #endif 10978 return (1); 10979 } else 10980 return (0); 10981 } 10982 10983 /* 10984 * Assumptions: caller holds ctl_softc->ctl_lock 10985 * 10986 * This routine cannot block! It must be callable from an interrupt 10987 * handler as well as from the work thread. 10988 */ 10989 static void 10990 ctl_run_task_queue(struct ctl_softc *ctl_softc) 10991 { 10992 union ctl_io *io, *next_io; 10993 10994 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 10995 10996 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 10997 io != NULL; io = next_io) { 10998 int retval; 10999 const char *task_desc; 11000 11001 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 11002 11003 retval = 0; 11004 11005 switch (io->io_hdr.io_type) { 11006 case CTL_IO_TASK: { 11007 task_desc = ctl_scsi_task_string(&io->taskio); 11008 if (task_desc != NULL) { 11009 #ifdef NEEDTOPORT 11010 csevent_log(CSC_CTL | CSC_SHELF_SW | 11011 CTL_TASK_REPORT, 11012 csevent_LogType_Trace, 11013 csevent_Severity_Information, 11014 csevent_AlertLevel_Green, 11015 csevent_FRU_Firmware, 11016 csevent_FRU_Unknown, 11017 "CTL: received task: %s",task_desc); 11018 #endif 11019 } else { 11020 #ifdef NEEDTOPORT 11021 csevent_log(CSC_CTL | CSC_SHELF_SW | 11022 CTL_TASK_REPORT, 11023 csevent_LogType_Trace, 11024 csevent_Severity_Information, 11025 csevent_AlertLevel_Green, 11026 csevent_FRU_Firmware, 11027 csevent_FRU_Unknown, 11028 "CTL: received unknown task " 11029 "type: %d (%#x)", 11030 io->taskio.task_action, 11031 io->taskio.task_action); 11032 #endif 11033 } 11034 switch (io->taskio.task_action) { 11035 case CTL_TASK_ABORT_TASK: 11036 retval = ctl_abort_task(io); 11037 break; 11038 case CTL_TASK_ABORT_TASK_SET: 11039 break; 11040 case CTL_TASK_CLEAR_ACA: 11041 break; 11042 case CTL_TASK_CLEAR_TASK_SET: 11043 break; 11044 case CTL_TASK_LUN_RESET: { 11045 struct ctl_lun *lun; 11046 uint32_t targ_lun; 11047 int retval; 11048 11049 targ_lun = io->io_hdr.nexus.targ_lun; 11050 11051 if ((targ_lun < CTL_MAX_LUNS) 11052 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11053 lun = ctl_softc->ctl_luns[targ_lun]; 11054 else { 11055 retval = 1; 11056 break; 11057 } 11058 11059 if (!(io->io_hdr.flags & 11060 CTL_FLAG_FROM_OTHER_SC)) { 11061 union ctl_ha_msg msg_info; 11062 11063 io->io_hdr.flags |= 11064 CTL_FLAG_SENT_2OTHER_SC; 11065 msg_info.hdr.msg_type = 11066 CTL_MSG_MANAGE_TASKS; 11067 msg_info.hdr.nexus = io->io_hdr.nexus; 11068 msg_info.task.task_action = 11069 CTL_TASK_LUN_RESET; 11070 msg_info.hdr.original_sc = NULL; 11071 msg_info.hdr.serializing_sc = NULL; 11072 if (CTL_HA_STATUS_SUCCESS != 11073 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11074 (void *)&msg_info, 11075 sizeof(msg_info), 0)) { 11076 } 11077 } 11078 11079 retval = ctl_lun_reset(lun, io, 11080 CTL_UA_LUN_RESET); 11081 break; 11082 } 11083 case CTL_TASK_TARGET_RESET: 11084 retval = ctl_target_reset(ctl_softc, io, 11085 CTL_UA_TARG_RESET); 11086 break; 11087 case CTL_TASK_BUS_RESET: 11088 retval = ctl_bus_reset(ctl_softc, io); 11089 break; 11090 case CTL_TASK_PORT_LOGIN: 11091 break; 11092 case CTL_TASK_PORT_LOGOUT: 11093 break; 11094 default: 11095 printf("ctl_run_task_queue: got unknown task " 11096 "management event %d\n", 11097 io->taskio.task_action); 11098 break; 11099 } 11100 if (retval == 0) 11101 io->io_hdr.status = CTL_SUCCESS; 11102 else 11103 io->io_hdr.status = CTL_ERROR; 11104 11105 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11106 ctl_io_hdr, links); 11107 /* 11108 * This will queue this I/O to the done queue, but the 11109 * work thread won't be able to process it until we 11110 * return and the lock is released. 11111 */ 11112 ctl_done_lock(io, /*have_lock*/ 1); 11113 break; 11114 } 11115 default: { 11116 11117 printf("%s: invalid I/O type %d msg %d cdb %x" 11118 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11119 __func__, io->io_hdr.io_type, 11120 io->io_hdr.msg_type, io->scsiio.cdb[0], 11121 (uintmax_t)io->io_hdr.nexus.initid.id, 11122 io->io_hdr.nexus.targ_port, 11123 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11124 io->io_hdr.nexus.targ_lun, 11125 (io->io_hdr.io_type == CTL_IO_TASK) ? 11126 io->taskio.tag_num : io->scsiio.tag_num); 11127 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11128 ctl_io_hdr, links); 11129 ctl_free_io_internal(io, 1); 11130 break; 11131 } 11132 } 11133 } 11134 11135 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11136 } 11137 11138 /* 11139 * For HA operation. Handle commands that come in from the other 11140 * controller. 11141 */ 11142 static void 11143 ctl_handle_isc(union ctl_io *io) 11144 { 11145 int free_io; 11146 struct ctl_lun *lun; 11147 struct ctl_softc *ctl_softc; 11148 11149 ctl_softc = control_softc; 11150 11151 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 11152 11153 switch (io->io_hdr.msg_type) { 11154 case CTL_MSG_SERIALIZE: 11155 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11156 /*have_lock*/ 0); 11157 break; 11158 case CTL_MSG_R2R: { 11159 uint8_t opcode; 11160 struct ctl_cmd_entry *entry; 11161 11162 /* 11163 * This is only used in SER_ONLY mode. 11164 */ 11165 free_io = 0; 11166 opcode = io->scsiio.cdb[0]; 11167 entry = &ctl_cmd_table[opcode]; 11168 mtx_lock(&ctl_softc->ctl_lock); 11169 if (ctl_scsiio_lun_check(ctl_softc, lun, 11170 entry, (struct ctl_scsiio *)io) != 0) { 11171 ctl_done_lock(io, /*have_lock*/ 1); 11172 mtx_unlock(&ctl_softc->ctl_lock); 11173 break; 11174 } 11175 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11176 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11177 &io->io_hdr, links); 11178 mtx_unlock(&ctl_softc->ctl_lock); 11179 break; 11180 } 11181 case CTL_MSG_FINISH_IO: 11182 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11183 free_io = 0; 11184 ctl_done_lock(io, /*have_lock*/ 0); 11185 } else { 11186 free_io = 1; 11187 mtx_lock(&ctl_softc->ctl_lock); 11188 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11189 ooa_links); 11190 STAILQ_REMOVE(&ctl_softc->task_queue, 11191 &io->io_hdr, ctl_io_hdr, links); 11192 ctl_check_blocked(lun); 11193 mtx_unlock(&ctl_softc->ctl_lock); 11194 } 11195 break; 11196 case CTL_MSG_PERS_ACTION: 11197 ctl_hndl_per_res_out_on_other_sc( 11198 (union ctl_ha_msg *)&io->presio.pr_msg); 11199 free_io = 1; 11200 break; 11201 case CTL_MSG_BAD_JUJU: 11202 free_io = 0; 11203 ctl_done_lock(io, /*have_lock*/ 0); 11204 break; 11205 case CTL_MSG_DATAMOVE: 11206 /* Only used in XFER mode */ 11207 free_io = 0; 11208 ctl_datamove_remote(io); 11209 break; 11210 case CTL_MSG_DATAMOVE_DONE: 11211 /* Only used in XFER mode */ 11212 free_io = 0; 11213 io->scsiio.be_move_done(io); 11214 break; 11215 default: 11216 free_io = 1; 11217 printf("%s: Invalid message type %d\n", 11218 __func__, io->io_hdr.msg_type); 11219 break; 11220 } 11221 if (free_io) 11222 ctl_free_io_internal(io, 0); 11223 11224 } 11225 11226 11227 /* 11228 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11229 * there is no match. 11230 */ 11231 static ctl_lun_error_pattern 11232 ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11233 { 11234 struct ctl_cmd_entry *entry; 11235 ctl_lun_error_pattern filtered_pattern, pattern; 11236 uint8_t opcode; 11237 11238 pattern = desc->error_pattern; 11239 11240 /* 11241 * XXX KDM we need more data passed into this function to match a 11242 * custom pattern, and we actually need to implement custom pattern 11243 * matching. 11244 */ 11245 if (pattern & CTL_LUN_PAT_CMD) 11246 return (CTL_LUN_PAT_CMD); 11247 11248 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11249 return (CTL_LUN_PAT_ANY); 11250 11251 opcode = ctsio->cdb[0]; 11252 entry = &ctl_cmd_table[opcode]; 11253 11254 filtered_pattern = entry->pattern & pattern; 11255 11256 /* 11257 * If the user requested specific flags in the pattern (e.g. 11258 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11259 * flags. 11260 * 11261 * If the user did not specify any flags, it doesn't matter whether 11262 * or not the command supports the flags. 11263 */ 11264 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11265 (pattern & ~CTL_LUN_PAT_MASK)) 11266 return (CTL_LUN_PAT_NONE); 11267 11268 /* 11269 * If the user asked for a range check, see if the requested LBA 11270 * range overlaps with this command's LBA range. 11271 */ 11272 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11273 uint64_t lba1; 11274 uint32_t len1; 11275 ctl_action action; 11276 int retval; 11277 11278 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11279 if (retval != 0) 11280 return (CTL_LUN_PAT_NONE); 11281 11282 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11283 desc->lba_range.len); 11284 /* 11285 * A "pass" means that the LBA ranges don't overlap, so 11286 * this doesn't match the user's range criteria. 11287 */ 11288 if (action == CTL_ACTION_PASS) 11289 return (CTL_LUN_PAT_NONE); 11290 } 11291 11292 return (filtered_pattern); 11293 } 11294 11295 /* 11296 * Called with the CTL lock held. 11297 */ 11298 static void 11299 ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11300 { 11301 struct ctl_error_desc *desc, *desc2; 11302 11303 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11304 ctl_lun_error_pattern pattern; 11305 /* 11306 * Check to see whether this particular command matches 11307 * the pattern in the descriptor. 11308 */ 11309 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11310 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11311 continue; 11312 11313 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11314 case CTL_LUN_INJ_ABORTED: 11315 ctl_set_aborted(&io->scsiio); 11316 break; 11317 case CTL_LUN_INJ_MEDIUM_ERR: 11318 ctl_set_medium_error(&io->scsiio); 11319 break; 11320 case CTL_LUN_INJ_UA: 11321 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11322 * OCCURRED */ 11323 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11324 break; 11325 case CTL_LUN_INJ_CUSTOM: 11326 /* 11327 * We're assuming the user knows what he is doing. 11328 * Just copy the sense information without doing 11329 * checks. 11330 */ 11331 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11332 ctl_min(sizeof(desc->custom_sense), 11333 sizeof(io->scsiio.sense_data))); 11334 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11335 io->scsiio.sense_len = SSD_FULL_SIZE; 11336 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11337 break; 11338 case CTL_LUN_INJ_NONE: 11339 default: 11340 /* 11341 * If this is an error injection type we don't know 11342 * about, clear the continuous flag (if it is set) 11343 * so it will get deleted below. 11344 */ 11345 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11346 break; 11347 } 11348 /* 11349 * By default, each error injection action is a one-shot 11350 */ 11351 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11352 continue; 11353 11354 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11355 11356 free(desc, M_CTL); 11357 } 11358 } 11359 11360 #ifdef CTL_IO_DELAY 11361 static void 11362 ctl_datamove_timer_wakeup(void *arg) 11363 { 11364 union ctl_io *io; 11365 11366 io = (union ctl_io *)arg; 11367 11368 ctl_datamove(io); 11369 } 11370 #endif /* CTL_IO_DELAY */ 11371 11372 /* 11373 * Assumption: caller does NOT hold ctl_lock 11374 */ 11375 void 11376 ctl_datamove(union ctl_io *io) 11377 { 11378 void (*fe_datamove)(union ctl_io *io); 11379 11380 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11381 11382 #ifdef CTL_TIME_IO 11383 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11384 char str[256]; 11385 char path_str[64]; 11386 struct sbuf sb; 11387 11388 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11389 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11390 11391 sbuf_cat(&sb, path_str); 11392 switch (io->io_hdr.io_type) { 11393 case CTL_IO_SCSI: 11394 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11395 sbuf_printf(&sb, "\n"); 11396 sbuf_cat(&sb, path_str); 11397 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11398 io->scsiio.tag_num, io->scsiio.tag_type); 11399 break; 11400 case CTL_IO_TASK: 11401 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11402 "Tag Type: %d\n", io->taskio.task_action, 11403 io->taskio.tag_num, io->taskio.tag_type); 11404 break; 11405 default: 11406 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11407 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11408 break; 11409 } 11410 sbuf_cat(&sb, path_str); 11411 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11412 (intmax_t)time_uptime - io->io_hdr.start_time); 11413 sbuf_finish(&sb); 11414 printf("%s", sbuf_data(&sb)); 11415 } 11416 #endif /* CTL_TIME_IO */ 11417 11418 mtx_lock(&control_softc->ctl_lock); 11419 #ifdef CTL_IO_DELAY 11420 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11421 struct ctl_lun *lun; 11422 11423 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11424 11425 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11426 } else { 11427 struct ctl_lun *lun; 11428 11429 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11430 if ((lun != NULL) 11431 && (lun->delay_info.datamove_delay > 0)) { 11432 struct callout *callout; 11433 11434 callout = (struct callout *)&io->io_hdr.timer_bytes; 11435 callout_init(callout, /*mpsafe*/ 1); 11436 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11437 callout_reset(callout, 11438 lun->delay_info.datamove_delay * hz, 11439 ctl_datamove_timer_wakeup, io); 11440 if (lun->delay_info.datamove_type == 11441 CTL_DELAY_TYPE_ONESHOT) 11442 lun->delay_info.datamove_delay = 0; 11443 mtx_unlock(&control_softc->ctl_lock); 11444 return; 11445 } 11446 } 11447 #endif 11448 /* 11449 * If we have any pending task management commands, process them 11450 * first. This is necessary to eliminate a race condition with the 11451 * FETD: 11452 * 11453 * - FETD submits a task management command, like an abort. 11454 * - Back end calls fe_datamove() to move the data for the aborted 11455 * command. The FETD can't really accept it, but if it did, it 11456 * would end up transmitting data for a command that the initiator 11457 * told us to abort. 11458 * 11459 * We close the race by processing all pending task management 11460 * commands here (we can't block!), and then check this I/O to see 11461 * if it has been aborted. If so, return it to the back end with 11462 * bad status, so the back end can say return an error to the back end 11463 * and then when the back end returns an error, we can return the 11464 * aborted command to the FETD, so it can clean up its resources. 11465 */ 11466 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11467 ctl_run_task_queue(control_softc); 11468 11469 /* 11470 * This command has been aborted. Set the port status, so we fail 11471 * the data move. 11472 */ 11473 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11474 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11475 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11476 io->io_hdr.nexus.targ_port, 11477 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11478 io->io_hdr.nexus.targ_lun); 11479 io->io_hdr.status = CTL_CMD_ABORTED; 11480 io->io_hdr.port_status = 31337; 11481 mtx_unlock(&control_softc->ctl_lock); 11482 /* 11483 * Note that the backend, in this case, will get the 11484 * callback in its context. In other cases it may get 11485 * called in the frontend's interrupt thread context. 11486 */ 11487 io->scsiio.be_move_done(io); 11488 return; 11489 } 11490 11491 /* 11492 * If we're in XFER mode and this I/O is from the other shelf 11493 * controller, we need to send the DMA to the other side to 11494 * actually transfer the data to/from the host. In serialize only 11495 * mode the transfer happens below CTL and ctl_datamove() is only 11496 * called on the machine that originally received the I/O. 11497 */ 11498 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11499 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11500 union ctl_ha_msg msg; 11501 uint32_t sg_entries_sent; 11502 int do_sg_copy; 11503 int i; 11504 11505 memset(&msg, 0, sizeof(msg)); 11506 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11507 msg.hdr.original_sc = io->io_hdr.original_sc; 11508 msg.hdr.serializing_sc = io; 11509 msg.hdr.nexus = io->io_hdr.nexus; 11510 msg.dt.flags = io->io_hdr.flags; 11511 /* 11512 * We convert everything into a S/G list here. We can't 11513 * pass by reference, only by value between controllers. 11514 * So we can't pass a pointer to the S/G list, only as many 11515 * S/G entries as we can fit in here. If it's possible for 11516 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11517 * then we need to break this up into multiple transfers. 11518 */ 11519 if (io->scsiio.kern_sg_entries == 0) { 11520 msg.dt.kern_sg_entries = 1; 11521 /* 11522 * If this is in cached memory, flush the cache 11523 * before we send the DMA request to the other 11524 * controller. We want to do this in either the 11525 * read or the write case. The read case is 11526 * straightforward. In the write case, we want to 11527 * make sure nothing is in the local cache that 11528 * could overwrite the DMAed data. 11529 */ 11530 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11531 /* 11532 * XXX KDM use bus_dmamap_sync() here. 11533 */ 11534 } 11535 11536 /* 11537 * Convert to a physical address if this is a 11538 * virtual address. 11539 */ 11540 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11541 msg.dt.sg_list[0].addr = 11542 io->scsiio.kern_data_ptr; 11543 } else { 11544 /* 11545 * XXX KDM use busdma here! 11546 */ 11547 #if 0 11548 msg.dt.sg_list[0].addr = (void *) 11549 vtophys(io->scsiio.kern_data_ptr); 11550 #endif 11551 } 11552 11553 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11554 do_sg_copy = 0; 11555 } else { 11556 struct ctl_sg_entry *sgl; 11557 11558 do_sg_copy = 1; 11559 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11560 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11561 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11562 /* 11563 * XXX KDM use bus_dmamap_sync() here. 11564 */ 11565 } 11566 } 11567 11568 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11569 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11570 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11571 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11572 msg.dt.sg_sequence = 0; 11573 11574 /* 11575 * Loop until we've sent all of the S/G entries. On the 11576 * other end, we'll recompose these S/G entries into one 11577 * contiguous list before passing it to the 11578 */ 11579 for (sg_entries_sent = 0; sg_entries_sent < 11580 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11581 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11582 sizeof(msg.dt.sg_list[0])), 11583 msg.dt.kern_sg_entries - sg_entries_sent); 11584 11585 if (do_sg_copy != 0) { 11586 struct ctl_sg_entry *sgl; 11587 int j; 11588 11589 sgl = (struct ctl_sg_entry *) 11590 io->scsiio.kern_data_ptr; 11591 /* 11592 * If this is in cached memory, flush the cache 11593 * before we send the DMA request to the other 11594 * controller. We want to do this in either 11595 * the * read or the write case. The read 11596 * case is straightforward. In the write 11597 * case, we want to make sure nothing is 11598 * in the local cache that could overwrite 11599 * the DMAed data. 11600 */ 11601 11602 for (i = sg_entries_sent, j = 0; 11603 i < msg.dt.cur_sg_entries; i++, j++) { 11604 if ((io->io_hdr.flags & 11605 CTL_FLAG_NO_DATASYNC) == 0) { 11606 /* 11607 * XXX KDM use bus_dmamap_sync() 11608 */ 11609 } 11610 if ((io->io_hdr.flags & 11611 CTL_FLAG_BUS_ADDR) == 0) { 11612 /* 11613 * XXX KDM use busdma. 11614 */ 11615 #if 0 11616 msg.dt.sg_list[j].addr =(void *) 11617 vtophys(sgl[i].addr); 11618 #endif 11619 } else { 11620 msg.dt.sg_list[j].addr = 11621 sgl[i].addr; 11622 } 11623 msg.dt.sg_list[j].len = sgl[i].len; 11624 } 11625 } 11626 11627 sg_entries_sent += msg.dt.cur_sg_entries; 11628 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11629 msg.dt.sg_last = 1; 11630 else 11631 msg.dt.sg_last = 0; 11632 11633 /* 11634 * XXX KDM drop and reacquire the lock here? 11635 */ 11636 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11637 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11638 /* 11639 * XXX do something here. 11640 */ 11641 } 11642 11643 msg.dt.sent_sg_entries = sg_entries_sent; 11644 } 11645 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11646 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11647 ctl_failover_io(io, /*have_lock*/ 1); 11648 11649 } else { 11650 11651 /* 11652 * Lookup the fe_datamove() function for this particular 11653 * front end. 11654 */ 11655 fe_datamove = 11656 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11657 mtx_unlock(&control_softc->ctl_lock); 11658 11659 fe_datamove(io); 11660 } 11661 } 11662 11663 static void 11664 ctl_send_datamove_done(union ctl_io *io, int have_lock) 11665 { 11666 union ctl_ha_msg msg; 11667 int isc_status; 11668 11669 memset(&msg, 0, sizeof(msg)); 11670 11671 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11672 msg.hdr.original_sc = io; 11673 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11674 msg.hdr.nexus = io->io_hdr.nexus; 11675 msg.hdr.status = io->io_hdr.status; 11676 msg.scsi.tag_num = io->scsiio.tag_num; 11677 msg.scsi.tag_type = io->scsiio.tag_type; 11678 msg.scsi.scsi_status = io->scsiio.scsi_status; 11679 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11680 sizeof(io->scsiio.sense_data)); 11681 msg.scsi.sense_len = io->scsiio.sense_len; 11682 msg.scsi.sense_residual = io->scsiio.sense_residual; 11683 msg.scsi.fetd_status = io->io_hdr.port_status; 11684 msg.scsi.residual = io->scsiio.residual; 11685 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11686 11687 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11688 ctl_failover_io(io, /*have_lock*/ have_lock); 11689 return; 11690 } 11691 11692 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11693 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11694 /* XXX do something if this fails */ 11695 } 11696 11697 } 11698 11699 /* 11700 * The DMA to the remote side is done, now we need to tell the other side 11701 * we're done so it can continue with its data movement. 11702 */ 11703 static void 11704 ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 11705 { 11706 union ctl_io *io; 11707 11708 io = rq->context; 11709 11710 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11711 printf("%s: ISC DMA write failed with error %d", __func__, 11712 rq->ret); 11713 ctl_set_internal_failure(&io->scsiio, 11714 /*sks_valid*/ 1, 11715 /*retry_count*/ rq->ret); 11716 } 11717 11718 ctl_dt_req_free(rq); 11719 11720 /* 11721 * In this case, we had to malloc the memory locally. Free it. 11722 */ 11723 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11724 int i; 11725 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11726 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11727 } 11728 /* 11729 * The data is in local and remote memory, so now we need to send 11730 * status (good or back) back to the other side. 11731 */ 11732 ctl_send_datamove_done(io, /*have_lock*/ 0); 11733 } 11734 11735 /* 11736 * We've moved the data from the host/controller into local memory. Now we 11737 * need to push it over to the remote controller's memory. 11738 */ 11739 static int 11740 ctl_datamove_remote_dm_write_cb(union ctl_io *io) 11741 { 11742 int retval; 11743 11744 retval = 0; 11745 11746 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 11747 ctl_datamove_remote_write_cb); 11748 11749 return (retval); 11750 } 11751 11752 static void 11753 ctl_datamove_remote_write(union ctl_io *io) 11754 { 11755 int retval; 11756 void (*fe_datamove)(union ctl_io *io); 11757 11758 /* 11759 * - Get the data from the host/HBA into local memory. 11760 * - DMA memory from the local controller to the remote controller. 11761 * - Send status back to the remote controller. 11762 */ 11763 11764 retval = ctl_datamove_remote_sgl_setup(io); 11765 if (retval != 0) 11766 return; 11767 11768 /* Switch the pointer over so the FETD knows what to do */ 11769 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11770 11771 /* 11772 * Use a custom move done callback, since we need to send completion 11773 * back to the other controller, not to the backend on this side. 11774 */ 11775 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 11776 11777 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11778 11779 fe_datamove(io); 11780 11781 return; 11782 11783 } 11784 11785 static int 11786 ctl_datamove_remote_dm_read_cb(union ctl_io *io) 11787 { 11788 #if 0 11789 char str[256]; 11790 char path_str[64]; 11791 struct sbuf sb; 11792 #endif 11793 11794 /* 11795 * In this case, we had to malloc the memory locally. Free it. 11796 */ 11797 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11798 int i; 11799 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11800 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11801 } 11802 11803 #if 0 11804 scsi_path_string(io, path_str, sizeof(path_str)); 11805 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11806 sbuf_cat(&sb, path_str); 11807 scsi_command_string(&io->scsiio, NULL, &sb); 11808 sbuf_printf(&sb, "\n"); 11809 sbuf_cat(&sb, path_str); 11810 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11811 io->scsiio.tag_num, io->scsiio.tag_type); 11812 sbuf_cat(&sb, path_str); 11813 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 11814 io->io_hdr.flags, io->io_hdr.status); 11815 sbuf_finish(&sb); 11816 printk("%s", sbuf_data(&sb)); 11817 #endif 11818 11819 11820 /* 11821 * The read is done, now we need to send status (good or bad) back 11822 * to the other side. 11823 */ 11824 ctl_send_datamove_done(io, /*have_lock*/ 0); 11825 11826 return (0); 11827 } 11828 11829 static void 11830 ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 11831 { 11832 union ctl_io *io; 11833 void (*fe_datamove)(union ctl_io *io); 11834 11835 io = rq->context; 11836 11837 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11838 printf("%s: ISC DMA read failed with error %d", __func__, 11839 rq->ret); 11840 ctl_set_internal_failure(&io->scsiio, 11841 /*sks_valid*/ 1, 11842 /*retry_count*/ rq->ret); 11843 } 11844 11845 ctl_dt_req_free(rq); 11846 11847 /* Switch the pointer over so the FETD knows what to do */ 11848 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11849 11850 /* 11851 * Use a custom move done callback, since we need to send completion 11852 * back to the other controller, not to the backend on this side. 11853 */ 11854 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 11855 11856 /* XXX KDM add checks like the ones in ctl_datamove? */ 11857 11858 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11859 11860 fe_datamove(io); 11861 } 11862 11863 static int 11864 ctl_datamove_remote_sgl_setup(union ctl_io *io) 11865 { 11866 struct ctl_sg_entry *local_sglist, *remote_sglist; 11867 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 11868 struct ctl_softc *softc; 11869 int retval; 11870 int i; 11871 11872 retval = 0; 11873 softc = control_softc; 11874 11875 local_sglist = io->io_hdr.local_sglist; 11876 local_dma_sglist = io->io_hdr.local_dma_sglist; 11877 remote_sglist = io->io_hdr.remote_sglist; 11878 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11879 11880 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 11881 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 11882 local_sglist[i].len = remote_sglist[i].len; 11883 11884 /* 11885 * XXX Detect the situation where the RS-level I/O 11886 * redirector on the other side has already read the 11887 * data off of the AOR RS on this side, and 11888 * transferred it to remote (mirror) memory on the 11889 * other side. Since we already have the data in 11890 * memory here, we just need to use it. 11891 * 11892 * XXX KDM this can probably be removed once we 11893 * get the cache device code in and take the 11894 * current AOR implementation out. 11895 */ 11896 #ifdef NEEDTOPORT 11897 if ((remote_sglist[i].addr >= 11898 (void *)vtophys(softc->mirr->addr)) 11899 && (remote_sglist[i].addr < 11900 ((void *)vtophys(softc->mirr->addr) + 11901 CacheMirrorOffset))) { 11902 local_sglist[i].addr = remote_sglist[i].addr - 11903 CacheMirrorOffset; 11904 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 11905 CTL_FLAG_DATA_IN) 11906 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 11907 } else { 11908 local_sglist[i].addr = remote_sglist[i].addr + 11909 CacheMirrorOffset; 11910 } 11911 #endif 11912 #if 0 11913 printf("%s: local %p, remote %p, len %d\n", 11914 __func__, local_sglist[i].addr, 11915 remote_sglist[i].addr, local_sglist[i].len); 11916 #endif 11917 } 11918 } else { 11919 uint32_t len_to_go; 11920 11921 /* 11922 * In this case, we don't have automatically allocated 11923 * memory for this I/O on this controller. This typically 11924 * happens with internal CTL I/O -- e.g. inquiry, mode 11925 * sense, etc. Anything coming from RAIDCore will have 11926 * a mirror area available. 11927 */ 11928 len_to_go = io->scsiio.kern_data_len; 11929 11930 /* 11931 * Clear the no datasync flag, we have to use malloced 11932 * buffers. 11933 */ 11934 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 11935 11936 /* 11937 * The difficult thing here is that the size of the various 11938 * S/G segments may be different than the size from the 11939 * remote controller. That'll make it harder when DMAing 11940 * the data back to the other side. 11941 */ 11942 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 11943 sizeof(io->io_hdr.remote_sglist[0])) && 11944 (len_to_go > 0); i++) { 11945 local_sglist[i].len = ctl_min(len_to_go, 131072); 11946 CTL_SIZE_8B(local_dma_sglist[i].len, 11947 local_sglist[i].len); 11948 local_sglist[i].addr = 11949 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 11950 11951 local_dma_sglist[i].addr = local_sglist[i].addr; 11952 11953 if (local_sglist[i].addr == NULL) { 11954 int j; 11955 11956 printf("malloc failed for %zd bytes!", 11957 local_dma_sglist[i].len); 11958 for (j = 0; j < i; j++) { 11959 free(local_sglist[j].addr, M_CTL); 11960 } 11961 ctl_set_internal_failure(&io->scsiio, 11962 /*sks_valid*/ 1, 11963 /*retry_count*/ 4857); 11964 retval = 1; 11965 goto bailout_error; 11966 11967 } 11968 /* XXX KDM do we need a sync here? */ 11969 11970 len_to_go -= local_sglist[i].len; 11971 } 11972 /* 11973 * Reset the number of S/G entries accordingly. The 11974 * original number of S/G entries is available in 11975 * rem_sg_entries. 11976 */ 11977 io->scsiio.kern_sg_entries = i; 11978 11979 #if 0 11980 printf("%s: kern_sg_entries = %d\n", __func__, 11981 io->scsiio.kern_sg_entries); 11982 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11983 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 11984 local_sglist[i].addr, local_sglist[i].len, 11985 local_dma_sglist[i].len); 11986 #endif 11987 } 11988 11989 11990 return (retval); 11991 11992 bailout_error: 11993 11994 ctl_send_datamove_done(io, /*have_lock*/ 0); 11995 11996 return (retval); 11997 } 11998 11999 static int 12000 ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12001 ctl_ha_dt_cb callback) 12002 { 12003 struct ctl_ha_dt_req *rq; 12004 struct ctl_sg_entry *remote_sglist, *local_sglist; 12005 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12006 uint32_t local_used, remote_used, total_used; 12007 int retval; 12008 int i, j; 12009 12010 retval = 0; 12011 12012 rq = ctl_dt_req_alloc(); 12013 12014 /* 12015 * If we failed to allocate the request, and if the DMA didn't fail 12016 * anyway, set busy status. This is just a resource allocation 12017 * failure. 12018 */ 12019 if ((rq == NULL) 12020 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12021 ctl_set_busy(&io->scsiio); 12022 12023 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12024 12025 if (rq != NULL) 12026 ctl_dt_req_free(rq); 12027 12028 /* 12029 * The data move failed. We need to return status back 12030 * to the other controller. No point in trying to DMA 12031 * data to the remote controller. 12032 */ 12033 12034 ctl_send_datamove_done(io, /*have_lock*/ 0); 12035 12036 retval = 1; 12037 12038 goto bailout; 12039 } 12040 12041 local_sglist = io->io_hdr.local_sglist; 12042 local_dma_sglist = io->io_hdr.local_dma_sglist; 12043 remote_sglist = io->io_hdr.remote_sglist; 12044 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12045 local_used = 0; 12046 remote_used = 0; 12047 total_used = 0; 12048 12049 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12050 rq->ret = CTL_HA_STATUS_SUCCESS; 12051 rq->context = io; 12052 callback(rq); 12053 goto bailout; 12054 } 12055 12056 /* 12057 * Pull/push the data over the wire from/to the other controller. 12058 * This takes into account the possibility that the local and 12059 * remote sglists may not be identical in terms of the size of 12060 * the elements and the number of elements. 12061 * 12062 * One fundamental assumption here is that the length allocated for 12063 * both the local and remote sglists is identical. Otherwise, we've 12064 * essentially got a coding error of some sort. 12065 */ 12066 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12067 int isc_ret; 12068 uint32_t cur_len, dma_length; 12069 uint8_t *tmp_ptr; 12070 12071 rq->id = CTL_HA_DATA_CTL; 12072 rq->command = command; 12073 rq->context = io; 12074 12075 /* 12076 * Both pointers should be aligned. But it is possible 12077 * that the allocation length is not. They should both 12078 * also have enough slack left over at the end, though, 12079 * to round up to the next 8 byte boundary. 12080 */ 12081 cur_len = ctl_min(local_sglist[i].len - local_used, 12082 remote_sglist[j].len - remote_used); 12083 12084 /* 12085 * In this case, we have a size issue and need to decrease 12086 * the size, except in the case where we actually have less 12087 * than 8 bytes left. In that case, we need to increase 12088 * the DMA length to get the last bit. 12089 */ 12090 if ((cur_len & 0x7) != 0) { 12091 if (cur_len > 0x7) { 12092 cur_len = cur_len - (cur_len & 0x7); 12093 dma_length = cur_len; 12094 } else { 12095 CTL_SIZE_8B(dma_length, cur_len); 12096 } 12097 12098 } else 12099 dma_length = cur_len; 12100 12101 /* 12102 * If we had to allocate memory for this I/O, instead of using 12103 * the non-cached mirror memory, we'll need to flush the cache 12104 * before trying to DMA to the other controller. 12105 * 12106 * We could end up doing this multiple times for the same 12107 * segment if we have a larger local segment than remote 12108 * segment. That shouldn't be an issue. 12109 */ 12110 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12111 /* 12112 * XXX KDM use bus_dmamap_sync() here. 12113 */ 12114 } 12115 12116 rq->size = dma_length; 12117 12118 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12119 tmp_ptr += local_used; 12120 12121 /* Use physical addresses when talking to ISC hardware */ 12122 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12123 /* XXX KDM use busdma */ 12124 #if 0 12125 rq->local = vtophys(tmp_ptr); 12126 #endif 12127 } else 12128 rq->local = tmp_ptr; 12129 12130 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12131 tmp_ptr += remote_used; 12132 rq->remote = tmp_ptr; 12133 12134 rq->callback = NULL; 12135 12136 local_used += cur_len; 12137 if (local_used >= local_sglist[i].len) { 12138 i++; 12139 local_used = 0; 12140 } 12141 12142 remote_used += cur_len; 12143 if (remote_used >= remote_sglist[j].len) { 12144 j++; 12145 remote_used = 0; 12146 } 12147 total_used += cur_len; 12148 12149 if (total_used >= io->scsiio.kern_data_len) 12150 rq->callback = callback; 12151 12152 if ((rq->size & 0x7) != 0) { 12153 printf("%s: warning: size %d is not on 8b boundary\n", 12154 __func__, rq->size); 12155 } 12156 if (((uintptr_t)rq->local & 0x7) != 0) { 12157 printf("%s: warning: local %p not on 8b boundary\n", 12158 __func__, rq->local); 12159 } 12160 if (((uintptr_t)rq->remote & 0x7) != 0) { 12161 printf("%s: warning: remote %p not on 8b boundary\n", 12162 __func__, rq->local); 12163 } 12164 #if 0 12165 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12166 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12167 rq->local, rq->remote, rq->size); 12168 #endif 12169 12170 isc_ret = ctl_dt_single(rq); 12171 if (isc_ret == CTL_HA_STATUS_WAIT) 12172 continue; 12173 12174 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12175 rq->ret = CTL_HA_STATUS_SUCCESS; 12176 } else { 12177 rq->ret = isc_ret; 12178 } 12179 callback(rq); 12180 goto bailout; 12181 } 12182 12183 bailout: 12184 return (retval); 12185 12186 } 12187 12188 static void 12189 ctl_datamove_remote_read(union ctl_io *io) 12190 { 12191 int retval; 12192 int i; 12193 12194 /* 12195 * This will send an error to the other controller in the case of a 12196 * failure. 12197 */ 12198 retval = ctl_datamove_remote_sgl_setup(io); 12199 if (retval != 0) 12200 return; 12201 12202 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12203 ctl_datamove_remote_read_cb); 12204 if ((retval != 0) 12205 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12206 /* 12207 * Make sure we free memory if there was an error.. The 12208 * ctl_datamove_remote_xfer() function will send the 12209 * datamove done message, or call the callback with an 12210 * error if there is a problem. 12211 */ 12212 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12213 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12214 } 12215 12216 return; 12217 } 12218 12219 /* 12220 * Process a datamove request from the other controller. This is used for 12221 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12222 * first. Once that is complete, the data gets DMAed into the remote 12223 * controller's memory. For reads, we DMA from the remote controller's 12224 * memory into our memory first, and then move it out to the FETD. 12225 * 12226 * Should be called without the ctl_lock held. 12227 */ 12228 static void 12229 ctl_datamove_remote(union ctl_io *io) 12230 { 12231 struct ctl_softc *softc; 12232 12233 softc = control_softc; 12234 12235 /* 12236 * Note that we look for an aborted I/O here, but don't do some of 12237 * the other checks that ctl_datamove() normally does. We don't 12238 * need to run the task queue, because this I/O is on the ISC 12239 * queue, which is executed by the work thread after the task queue. 12240 * We don't need to run the datamove delay code, since that should 12241 * have been done if need be on the other controller. 12242 */ 12243 mtx_lock(&softc->ctl_lock); 12244 12245 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12246 12247 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12248 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12249 io->io_hdr.nexus.targ_port, 12250 io->io_hdr.nexus.targ_target.id, 12251 io->io_hdr.nexus.targ_lun); 12252 io->io_hdr.status = CTL_CMD_ABORTED; 12253 io->io_hdr.port_status = 31338; 12254 12255 mtx_unlock(&softc->ctl_lock); 12256 12257 ctl_send_datamove_done(io, /*have_lock*/ 0); 12258 12259 return; 12260 } 12261 12262 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12263 mtx_unlock(&softc->ctl_lock); 12264 ctl_datamove_remote_write(io); 12265 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12266 mtx_unlock(&softc->ctl_lock); 12267 ctl_datamove_remote_read(io); 12268 } else { 12269 union ctl_ha_msg msg; 12270 struct scsi_sense_data *sense; 12271 uint8_t sks[3]; 12272 int retry_count; 12273 12274 memset(&msg, 0, sizeof(msg)); 12275 12276 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12277 msg.hdr.status = CTL_SCSI_ERROR; 12278 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12279 12280 retry_count = 4243; 12281 12282 sense = &msg.scsi.sense_data; 12283 sks[0] = SSD_SCS_VALID; 12284 sks[1] = (retry_count >> 8) & 0xff; 12285 sks[2] = retry_count & 0xff; 12286 12287 /* "Internal target failure" */ 12288 scsi_set_sense_data(sense, 12289 /*sense_format*/ SSD_TYPE_NONE, 12290 /*current_error*/ 1, 12291 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12292 /*asc*/ 0x44, 12293 /*ascq*/ 0x00, 12294 /*type*/ SSD_ELEM_SKS, 12295 /*size*/ sizeof(sks), 12296 /*data*/ sks, 12297 SSD_ELEM_NONE); 12298 12299 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12300 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12301 ctl_failover_io(io, /*have_lock*/ 1); 12302 mtx_unlock(&softc->ctl_lock); 12303 return; 12304 } 12305 12306 mtx_unlock(&softc->ctl_lock); 12307 12308 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12309 CTL_HA_STATUS_SUCCESS) { 12310 /* XXX KDM what to do if this fails? */ 12311 } 12312 return; 12313 } 12314 12315 } 12316 12317 static int 12318 ctl_process_done(union ctl_io *io, int have_lock) 12319 { 12320 struct ctl_lun *lun; 12321 struct ctl_softc *ctl_softc; 12322 void (*fe_done)(union ctl_io *io); 12323 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12324 12325 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12326 12327 fe_done = 12328 control_softc->ctl_ports[targ_port]->fe_done; 12329 12330 #ifdef CTL_TIME_IO 12331 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12332 char str[256]; 12333 char path_str[64]; 12334 struct sbuf sb; 12335 12336 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12337 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12338 12339 sbuf_cat(&sb, path_str); 12340 switch (io->io_hdr.io_type) { 12341 case CTL_IO_SCSI: 12342 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12343 sbuf_printf(&sb, "\n"); 12344 sbuf_cat(&sb, path_str); 12345 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12346 io->scsiio.tag_num, io->scsiio.tag_type); 12347 break; 12348 case CTL_IO_TASK: 12349 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12350 "Tag Type: %d\n", io->taskio.task_action, 12351 io->taskio.tag_num, io->taskio.tag_type); 12352 break; 12353 default: 12354 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12355 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12356 break; 12357 } 12358 sbuf_cat(&sb, path_str); 12359 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12360 (intmax_t)time_uptime - io->io_hdr.start_time); 12361 sbuf_finish(&sb); 12362 printf("%s", sbuf_data(&sb)); 12363 } 12364 #endif /* CTL_TIME_IO */ 12365 12366 switch (io->io_hdr.io_type) { 12367 case CTL_IO_SCSI: 12368 break; 12369 case CTL_IO_TASK: 12370 ctl_io_error_print(io, NULL); 12371 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12372 ctl_free_io_internal(io, /*have_lock*/ 0); 12373 else 12374 fe_done(io); 12375 return (CTL_RETVAL_COMPLETE); 12376 break; 12377 default: 12378 printf("ctl_process_done: invalid io type %d\n", 12379 io->io_hdr.io_type); 12380 panic("ctl_process_done: invalid io type %d\n", 12381 io->io_hdr.io_type); 12382 break; /* NOTREACHED */ 12383 } 12384 12385 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12386 if (lun == NULL) { 12387 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12388 io->io_hdr.nexus.targ_lun)); 12389 fe_done(io); 12390 goto bailout; 12391 } 12392 ctl_softc = lun->ctl_softc; 12393 12394 /* 12395 * Remove this from the OOA queue. 12396 */ 12397 if (have_lock == 0) 12398 mtx_lock(&ctl_softc->ctl_lock); 12399 12400 /* 12401 * Check to see if we have any errors to inject here. We only 12402 * inject errors for commands that don't already have errors set. 12403 */ 12404 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12405 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12406 ctl_inject_error(lun, io); 12407 12408 /* 12409 * XXX KDM how do we treat commands that aren't completed 12410 * successfully? 12411 * 12412 * XXX KDM should we also track I/O latency? 12413 */ 12414 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12415 uint32_t blocksize; 12416 #ifdef CTL_TIME_IO 12417 struct bintime cur_bt; 12418 #endif 12419 12420 if ((lun->be_lun != NULL) 12421 && (lun->be_lun->blocksize != 0)) 12422 blocksize = lun->be_lun->blocksize; 12423 else 12424 blocksize = 512; 12425 12426 switch (io->io_hdr.io_type) { 12427 case CTL_IO_SCSI: { 12428 int isread; 12429 struct ctl_lba_len lbalen; 12430 12431 isread = 0; 12432 switch (io->scsiio.cdb[0]) { 12433 case READ_6: 12434 case READ_10: 12435 case READ_12: 12436 case READ_16: 12437 isread = 1; 12438 /* FALLTHROUGH */ 12439 case WRITE_6: 12440 case WRITE_10: 12441 case WRITE_12: 12442 case WRITE_16: 12443 case WRITE_VERIFY_10: 12444 case WRITE_VERIFY_12: 12445 case WRITE_VERIFY_16: 12446 memcpy(&lbalen, io->io_hdr.ctl_private[ 12447 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12448 12449 if (isread) { 12450 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12451 lbalen.len * blocksize; 12452 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12453 12454 #ifdef CTL_TIME_IO 12455 bintime_add( 12456 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12457 &io->io_hdr.dma_bt); 12458 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12459 io->io_hdr.num_dmas; 12460 getbintime(&cur_bt); 12461 bintime_sub(&cur_bt, 12462 &io->io_hdr.start_bt); 12463 12464 bintime_add( 12465 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12466 &cur_bt); 12467 12468 #if 0 12469 cs_prof_gettime(&cur_ticks); 12470 lun->stats.time[CTL_STATS_READ] += 12471 cur_ticks - 12472 io->io_hdr.start_ticks; 12473 #endif 12474 #if 0 12475 lun->stats.time[CTL_STATS_READ] += 12476 jiffies - io->io_hdr.start_time; 12477 #endif 12478 #endif /* CTL_TIME_IO */ 12479 } else { 12480 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12481 lbalen.len * blocksize; 12482 lun->stats.ports[targ_port].operations[ 12483 CTL_STATS_WRITE]++; 12484 12485 #ifdef CTL_TIME_IO 12486 bintime_add( 12487 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12488 &io->io_hdr.dma_bt); 12489 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12490 io->io_hdr.num_dmas; 12491 getbintime(&cur_bt); 12492 bintime_sub(&cur_bt, 12493 &io->io_hdr.start_bt); 12494 12495 bintime_add( 12496 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12497 &cur_bt); 12498 #if 0 12499 cs_prof_gettime(&cur_ticks); 12500 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12501 cur_ticks - 12502 io->io_hdr.start_ticks; 12503 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12504 jiffies - io->io_hdr.start_time; 12505 #endif 12506 #endif /* CTL_TIME_IO */ 12507 } 12508 break; 12509 default: 12510 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12511 12512 #ifdef CTL_TIME_IO 12513 bintime_add( 12514 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12515 &io->io_hdr.dma_bt); 12516 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12517 io->io_hdr.num_dmas; 12518 getbintime(&cur_bt); 12519 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12520 12521 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12522 &cur_bt); 12523 12524 #if 0 12525 cs_prof_gettime(&cur_ticks); 12526 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12527 cur_ticks - 12528 io->io_hdr.start_ticks; 12529 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12530 jiffies - io->io_hdr.start_time; 12531 #endif 12532 #endif /* CTL_TIME_IO */ 12533 break; 12534 } 12535 break; 12536 } 12537 default: 12538 break; 12539 } 12540 } 12541 12542 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12543 12544 /* 12545 * Run through the blocked queue on this LUN and see if anything 12546 * has become unblocked, now that this transaction is done. 12547 */ 12548 ctl_check_blocked(lun); 12549 12550 /* 12551 * If the LUN has been invalidated, free it if there is nothing 12552 * left on its OOA queue. 12553 */ 12554 if ((lun->flags & CTL_LUN_INVALID) 12555 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12556 ctl_free_lun(lun); 12557 12558 /* 12559 * If this command has been aborted, make sure we set the status 12560 * properly. The FETD is responsible for freeing the I/O and doing 12561 * whatever it needs to do to clean up its state. 12562 */ 12563 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12564 io->io_hdr.status = CTL_CMD_ABORTED; 12565 12566 /* 12567 * We print out status for every task management command. For SCSI 12568 * commands, we filter out any unit attention errors; they happen 12569 * on every boot, and would clutter up the log. Note: task 12570 * management commands aren't printed here, they are printed above, 12571 * since they should never even make it down here. 12572 */ 12573 switch (io->io_hdr.io_type) { 12574 case CTL_IO_SCSI: { 12575 int error_code, sense_key, asc, ascq; 12576 12577 sense_key = 0; 12578 12579 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12580 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12581 /* 12582 * Since this is just for printing, no need to 12583 * show errors here. 12584 */ 12585 scsi_extract_sense_len(&io->scsiio.sense_data, 12586 io->scsiio.sense_len, 12587 &error_code, 12588 &sense_key, 12589 &asc, 12590 &ascq, 12591 /*show_errors*/ 0); 12592 } 12593 12594 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12595 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12596 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12597 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12598 12599 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12600 ctl_softc->skipped_prints++; 12601 if (have_lock == 0) 12602 mtx_unlock(&ctl_softc->ctl_lock); 12603 } else { 12604 uint32_t skipped_prints; 12605 12606 skipped_prints = ctl_softc->skipped_prints; 12607 12608 ctl_softc->skipped_prints = 0; 12609 ctl_softc->last_print_jiffies = time_uptime; 12610 12611 if (have_lock == 0) 12612 mtx_unlock(&ctl_softc->ctl_lock); 12613 if (skipped_prints > 0) { 12614 #ifdef NEEDTOPORT 12615 csevent_log(CSC_CTL | CSC_SHELF_SW | 12616 CTL_ERROR_REPORT, 12617 csevent_LogType_Trace, 12618 csevent_Severity_Information, 12619 csevent_AlertLevel_Green, 12620 csevent_FRU_Firmware, 12621 csevent_FRU_Unknown, 12622 "High CTL error volume, %d prints " 12623 "skipped", skipped_prints); 12624 #endif 12625 } 12626 ctl_io_error_print(io, NULL); 12627 } 12628 } else { 12629 if (have_lock == 0) 12630 mtx_unlock(&ctl_softc->ctl_lock); 12631 } 12632 break; 12633 } 12634 case CTL_IO_TASK: 12635 if (have_lock == 0) 12636 mtx_unlock(&ctl_softc->ctl_lock); 12637 ctl_io_error_print(io, NULL); 12638 break; 12639 default: 12640 if (have_lock == 0) 12641 mtx_unlock(&ctl_softc->ctl_lock); 12642 break; 12643 } 12644 12645 /* 12646 * Tell the FETD or the other shelf controller we're done with this 12647 * command. Note that only SCSI commands get to this point. Task 12648 * management commands are completed above. 12649 * 12650 * We only send status to the other controller if we're in XFER 12651 * mode. In SER_ONLY mode, the I/O is done on the controller that 12652 * received the I/O (from CTL's perspective), and so the status is 12653 * generated there. 12654 * 12655 * XXX KDM if we hold the lock here, we could cause a deadlock 12656 * if the frontend comes back in in this context to queue 12657 * something. 12658 */ 12659 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12660 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12661 union ctl_ha_msg msg; 12662 12663 memset(&msg, 0, sizeof(msg)); 12664 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12665 msg.hdr.original_sc = io->io_hdr.original_sc; 12666 msg.hdr.nexus = io->io_hdr.nexus; 12667 msg.hdr.status = io->io_hdr.status; 12668 msg.scsi.scsi_status = io->scsiio.scsi_status; 12669 msg.scsi.tag_num = io->scsiio.tag_num; 12670 msg.scsi.tag_type = io->scsiio.tag_type; 12671 msg.scsi.sense_len = io->scsiio.sense_len; 12672 msg.scsi.sense_residual = io->scsiio.sense_residual; 12673 msg.scsi.residual = io->scsiio.residual; 12674 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12675 sizeof(io->scsiio.sense_data)); 12676 /* 12677 * We copy this whether or not this is an I/O-related 12678 * command. Otherwise, we'd have to go and check to see 12679 * whether it's a read/write command, and it really isn't 12680 * worth it. 12681 */ 12682 memcpy(&msg.scsi.lbalen, 12683 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12684 sizeof(msg.scsi.lbalen));; 12685 12686 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12687 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12688 /* XXX do something here */ 12689 } 12690 12691 ctl_free_io_internal(io, /*have_lock*/ 0); 12692 } else 12693 fe_done(io); 12694 12695 bailout: 12696 12697 return (CTL_RETVAL_COMPLETE); 12698 } 12699 12700 /* 12701 * Front end should call this if it doesn't do autosense. When the request 12702 * sense comes back in from the initiator, we'll dequeue this and send it. 12703 */ 12704 int 12705 ctl_queue_sense(union ctl_io *io) 12706 { 12707 struct ctl_lun *lun; 12708 struct ctl_softc *ctl_softc; 12709 uint32_t initidx; 12710 12711 ctl_softc = control_softc; 12712 12713 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 12714 12715 /* 12716 * LUN lookup will likely move to the ctl_work_thread() once we 12717 * have our new queueing infrastructure (that doesn't put things on 12718 * a per-LUN queue initially). That is so that we can handle 12719 * things like an INQUIRY to a LUN that we don't have enabled. We 12720 * can't deal with that right now. 12721 */ 12722 mtx_lock(&ctl_softc->ctl_lock); 12723 12724 /* 12725 * If we don't have a LUN for this, just toss the sense 12726 * information. 12727 */ 12728 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 12729 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 12730 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 12731 else 12732 goto bailout; 12733 12734 initidx = ctl_get_initindex(&io->io_hdr.nexus); 12735 12736 /* 12737 * Already have CA set for this LUN...toss the sense information. 12738 */ 12739 if (ctl_is_set(lun->have_ca, initidx)) 12740 goto bailout; 12741 12742 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 12743 ctl_min(sizeof(lun->pending_sense[initidx].sense), 12744 sizeof(io->scsiio.sense_data))); 12745 ctl_set_mask(lun->have_ca, initidx); 12746 12747 bailout: 12748 mtx_unlock(&ctl_softc->ctl_lock); 12749 12750 ctl_free_io(io); 12751 12752 return (CTL_RETVAL_COMPLETE); 12753 } 12754 12755 /* 12756 * Primary command inlet from frontend ports. All SCSI and task I/O 12757 * requests must go through this function. 12758 */ 12759 int 12760 ctl_queue(union ctl_io *io) 12761 { 12762 struct ctl_softc *ctl_softc; 12763 12764 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 12765 12766 ctl_softc = control_softc; 12767 12768 #ifdef CTL_TIME_IO 12769 io->io_hdr.start_time = time_uptime; 12770 getbintime(&io->io_hdr.start_bt); 12771 #endif /* CTL_TIME_IO */ 12772 12773 mtx_lock(&ctl_softc->ctl_lock); 12774 12775 switch (io->io_hdr.io_type) { 12776 case CTL_IO_SCSI: 12777 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 12778 links); 12779 break; 12780 case CTL_IO_TASK: 12781 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 12782 /* 12783 * Set the task pending flag. This is necessary to close a 12784 * race condition with the FETD: 12785 * 12786 * - FETD submits a task management command, like an abort. 12787 * - Back end calls fe_datamove() to move the data for the 12788 * aborted command. The FETD can't really accept it, but 12789 * if it did, it would end up transmitting data for a 12790 * command that the initiator told us to abort. 12791 * 12792 * We close the race condition by setting the flag here, 12793 * and checking it in ctl_datamove(), before calling the 12794 * FETD's fe_datamove routine. If we've got a task 12795 * pending, we run the task queue and then check to see 12796 * whether our particular I/O has been aborted. 12797 */ 12798 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 12799 break; 12800 default: 12801 mtx_unlock(&ctl_softc->ctl_lock); 12802 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 12803 return (-EINVAL); 12804 break; /* NOTREACHED */ 12805 } 12806 mtx_unlock(&ctl_softc->ctl_lock); 12807 12808 ctl_wakeup_thread(); 12809 12810 return (CTL_RETVAL_COMPLETE); 12811 } 12812 12813 #ifdef CTL_IO_DELAY 12814 static void 12815 ctl_done_timer_wakeup(void *arg) 12816 { 12817 union ctl_io *io; 12818 12819 io = (union ctl_io *)arg; 12820 ctl_done_lock(io, /*have_lock*/ 0); 12821 } 12822 #endif /* CTL_IO_DELAY */ 12823 12824 void 12825 ctl_done_lock(union ctl_io *io, int have_lock) 12826 { 12827 struct ctl_softc *ctl_softc; 12828 #ifndef CTL_DONE_THREAD 12829 union ctl_io *xio; 12830 #endif /* !CTL_DONE_THREAD */ 12831 12832 ctl_softc = control_softc; 12833 12834 if (have_lock == 0) 12835 mtx_lock(&ctl_softc->ctl_lock); 12836 12837 /* 12838 * Enable this to catch duplicate completion issues. 12839 */ 12840 #if 0 12841 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 12842 printf("%s: type %d msg %d cdb %x iptl: " 12843 "%d:%d:%d:%d tag 0x%04x " 12844 "flag %#x status %x\n", 12845 __func__, 12846 io->io_hdr.io_type, 12847 io->io_hdr.msg_type, 12848 io->scsiio.cdb[0], 12849 io->io_hdr.nexus.initid.id, 12850 io->io_hdr.nexus.targ_port, 12851 io->io_hdr.nexus.targ_target.id, 12852 io->io_hdr.nexus.targ_lun, 12853 (io->io_hdr.io_type == 12854 CTL_IO_TASK) ? 12855 io->taskio.tag_num : 12856 io->scsiio.tag_num, 12857 io->io_hdr.flags, 12858 io->io_hdr.status); 12859 } else 12860 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 12861 #endif 12862 12863 /* 12864 * This is an internal copy of an I/O, and should not go through 12865 * the normal done processing logic. 12866 */ 12867 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 12868 if (have_lock == 0) 12869 mtx_unlock(&ctl_softc->ctl_lock); 12870 return; 12871 } 12872 12873 /* 12874 * We need to send a msg to the serializing shelf to finish the IO 12875 * as well. We don't send a finish message to the other shelf if 12876 * this is a task management command. Task management commands 12877 * aren't serialized in the OOA queue, but rather just executed on 12878 * both shelf controllers for commands that originated on that 12879 * controller. 12880 */ 12881 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 12882 && (io->io_hdr.io_type != CTL_IO_TASK)) { 12883 union ctl_ha_msg msg_io; 12884 12885 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 12886 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 12887 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 12888 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 12889 } 12890 /* continue on to finish IO */ 12891 } 12892 #ifdef CTL_IO_DELAY 12893 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12894 struct ctl_lun *lun; 12895 12896 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12897 12898 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12899 } else { 12900 struct ctl_lun *lun; 12901 12902 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12903 12904 if ((lun != NULL) 12905 && (lun->delay_info.done_delay > 0)) { 12906 struct callout *callout; 12907 12908 callout = (struct callout *)&io->io_hdr.timer_bytes; 12909 callout_init(callout, /*mpsafe*/ 1); 12910 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12911 callout_reset(callout, 12912 lun->delay_info.done_delay * hz, 12913 ctl_done_timer_wakeup, io); 12914 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 12915 lun->delay_info.done_delay = 0; 12916 if (have_lock == 0) 12917 mtx_unlock(&ctl_softc->ctl_lock); 12918 return; 12919 } 12920 } 12921 #endif /* CTL_IO_DELAY */ 12922 12923 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 12924 12925 #ifdef CTL_DONE_THREAD 12926 if (have_lock == 0) 12927 mtx_unlock(&ctl_softc->ctl_lock); 12928 12929 ctl_wakeup_thread(); 12930 #else /* CTL_DONE_THREAD */ 12931 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 12932 xio != NULL; 12933 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 12934 12935 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 12936 12937 ctl_process_done(xio, /*have_lock*/ 1); 12938 } 12939 if (have_lock == 0) 12940 mtx_unlock(&ctl_softc->ctl_lock); 12941 #endif /* CTL_DONE_THREAD */ 12942 } 12943 12944 void 12945 ctl_done(union ctl_io *io) 12946 { 12947 ctl_done_lock(io, /*have_lock*/ 0); 12948 } 12949 12950 int 12951 ctl_isc(struct ctl_scsiio *ctsio) 12952 { 12953 struct ctl_lun *lun; 12954 int retval; 12955 12956 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12957 12958 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 12959 12960 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 12961 12962 retval = lun->backend->data_submit((union ctl_io *)ctsio); 12963 12964 return (retval); 12965 } 12966 12967 12968 static void 12969 ctl_work_thread(void *arg) 12970 { 12971 struct ctl_softc *softc; 12972 union ctl_io *io; 12973 struct ctl_be_lun *be_lun; 12974 int retval; 12975 12976 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 12977 12978 softc = (struct ctl_softc *)arg; 12979 if (softc == NULL) 12980 return; 12981 12982 mtx_lock(&softc->ctl_lock); 12983 for (;;) { 12984 retval = 0; 12985 12986 /* 12987 * We handle the queues in this order: 12988 * - task management 12989 * - ISC 12990 * - done queue (to free up resources, unblock other commands) 12991 * - RtR queue 12992 * - incoming queue 12993 * 12994 * If those queues are empty, we break out of the loop and 12995 * go to sleep. 12996 */ 12997 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 12998 if (io != NULL) { 12999 ctl_run_task_queue(softc); 13000 continue; 13001 } 13002 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 13003 if (io != NULL) { 13004 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 13005 ctl_handle_isc(io); 13006 continue; 13007 } 13008 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13009 if (io != NULL) { 13010 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13011 /* clear any blocked commands, call fe_done */ 13012 mtx_unlock(&softc->ctl_lock); 13013 /* 13014 * XXX KDM 13015 * Call this without a lock for now. This will 13016 * depend on whether there is any way the FETD can 13017 * sleep or deadlock if called with the CTL lock 13018 * held. 13019 */ 13020 retval = ctl_process_done(io, /*have_lock*/ 0); 13021 mtx_lock(&softc->ctl_lock); 13022 continue; 13023 } 13024 if (!ctl_pause_rtr) { 13025 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13026 if (io != NULL) { 13027 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13028 mtx_unlock(&softc->ctl_lock); 13029 goto execute; 13030 } 13031 } 13032 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13033 if (io != NULL) { 13034 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13035 mtx_unlock(&softc->ctl_lock); 13036 ctl_scsiio_precheck(softc, &io->scsiio); 13037 mtx_lock(&softc->ctl_lock); 13038 continue; 13039 } 13040 /* 13041 * We might want to move this to a separate thread, so that 13042 * configuration requests (in this case LUN creations) 13043 * won't impact the I/O path. 13044 */ 13045 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13046 if (be_lun != NULL) { 13047 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13048 mtx_unlock(&softc->ctl_lock); 13049 ctl_create_lun(be_lun); 13050 mtx_lock(&softc->ctl_lock); 13051 continue; 13052 } 13053 13054 /* XXX KDM use the PDROP flag?? */ 13055 /* Sleep until we have something to do. */ 13056 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0); 13057 13058 /* Back to the top of the loop to see what woke us up. */ 13059 continue; 13060 13061 execute: 13062 retval = ctl_scsiio(&io->scsiio); 13063 switch (retval) { 13064 case CTL_RETVAL_COMPLETE: 13065 break; 13066 default: 13067 /* 13068 * Probably need to make sure this doesn't happen. 13069 */ 13070 break; 13071 } 13072 mtx_lock(&softc->ctl_lock); 13073 } 13074 } 13075 13076 void 13077 ctl_wakeup_thread() 13078 { 13079 struct ctl_softc *softc; 13080 13081 softc = control_softc; 13082 13083 wakeup(softc); 13084 } 13085 13086 /* Initialization and failover */ 13087 13088 void 13089 ctl_init_isc_msg(void) 13090 { 13091 printf("CTL: Still calling this thing\n"); 13092 } 13093 13094 /* 13095 * Init component 13096 * Initializes component into configuration defined by bootMode 13097 * (see hasc-sv.c) 13098 * returns hasc_Status: 13099 * OK 13100 * ERROR - fatal error 13101 */ 13102 static ctl_ha_comp_status 13103 ctl_isc_init(struct ctl_ha_component *c) 13104 { 13105 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13106 13107 c->status = ret; 13108 return ret; 13109 } 13110 13111 /* Start component 13112 * Starts component in state requested. If component starts successfully, 13113 * it must set its own state to the requestrd state 13114 * When requested state is HASC_STATE_HA, the component may refine it 13115 * by adding _SLAVE or _MASTER flags. 13116 * Currently allowed state transitions are: 13117 * UNKNOWN->HA - initial startup 13118 * UNKNOWN->SINGLE - initial startup when no parter detected 13119 * HA->SINGLE - failover 13120 * returns ctl_ha_comp_status: 13121 * OK - component successfully started in requested state 13122 * FAILED - could not start the requested state, failover may 13123 * be possible 13124 * ERROR - fatal error detected, no future startup possible 13125 */ 13126 static ctl_ha_comp_status 13127 ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13128 { 13129 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13130 13131 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13132 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13133 ctl_is_single = 0; 13134 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13135 != CTL_HA_STATUS_SUCCESS) { 13136 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13137 ret = CTL_HA_COMP_STATUS_ERROR; 13138 } 13139 } else if (CTL_HA_STATE_IS_HA(c->state) 13140 && CTL_HA_STATE_IS_SINGLE(state)){ 13141 // HA->SINGLE transition 13142 ctl_failover(); 13143 ctl_is_single = 1; 13144 } else { 13145 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13146 c->state, state); 13147 ret = CTL_HA_COMP_STATUS_ERROR; 13148 } 13149 if (CTL_HA_STATE_IS_SINGLE(state)) 13150 ctl_is_single = 1; 13151 13152 c->state = state; 13153 c->status = ret; 13154 return ret; 13155 } 13156 13157 /* 13158 * Quiesce component 13159 * The component must clear any error conditions (set status to OK) and 13160 * prepare itself to another Start call 13161 * returns ctl_ha_comp_status: 13162 * OK 13163 * ERROR 13164 */ 13165 static ctl_ha_comp_status 13166 ctl_isc_quiesce(struct ctl_ha_component *c) 13167 { 13168 int ret = CTL_HA_COMP_STATUS_OK; 13169 13170 ctl_pause_rtr = 1; 13171 c->status = ret; 13172 return ret; 13173 } 13174 13175 struct ctl_ha_component ctl_ha_component_ctlisc = 13176 { 13177 .name = "CTL ISC", 13178 .state = CTL_HA_STATE_UNKNOWN, 13179 .init = ctl_isc_init, 13180 .start = ctl_isc_start, 13181 .quiesce = ctl_isc_quiesce 13182 }; 13183 13184 /* 13185 * vim: ts=8 13186 */ 13187