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 SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 312 313 /* 314 * XXX KDM move these into the softc. 315 */ 316 static int rcv_sync_msg; 317 static int persis_offset; 318 static uint8_t ctl_pause_rtr; 319 static int ctl_is_single; 320 static int index_to_aps_page; 321 322 323 /* 324 * Serial number (0x80), device id (0x83), and supported pages (0x00) 325 */ 326 #define SCSI_EVPD_NUM_SUPPORTED_PAGES 3 327 328 static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 329 int param); 330 static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 331 static void ctl_init(void); 332 void ctl_shutdown(void); 333 static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 334 static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 335 static void ctl_ioctl_online(void *arg); 336 static void ctl_ioctl_offline(void *arg); 337 static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 338 static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 339 static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 340 static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 341 static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 342 static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 343 static int ctl_ioctl_submit_wait(union ctl_io *io); 344 static void ctl_ioctl_datamove(union ctl_io *io); 345 static void ctl_ioctl_done(union ctl_io *io); 346 static void ctl_ioctl_hard_startstop_callback(void *arg, 347 struct cfi_metatask *metatask); 348 static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 349 static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 350 struct ctl_ooa *ooa_hdr); 351 static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 352 struct thread *td); 353 uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 354 uint32_t ctl_port_idx(int port_num); 355 #ifdef unused 356 static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 357 uint32_t targ_target, uint32_t targ_lun, 358 int can_wait); 359 static void ctl_kfree_io(union ctl_io *io); 360 #endif /* unused */ 361 static void ctl_free_io_internal(union ctl_io *io, int have_lock); 362 static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 363 struct ctl_be_lun *be_lun, struct ctl_id target_id); 364 static int ctl_free_lun(struct ctl_lun *lun); 365 static void ctl_create_lun(struct ctl_be_lun *be_lun); 366 /** 367 static void ctl_failover_change_pages(struct ctl_softc *softc, 368 struct ctl_scsiio *ctsio, int master); 369 **/ 370 371 static int ctl_do_mode_select(union ctl_io *io); 372 static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 373 uint64_t res_key, uint64_t sa_res_key, 374 uint8_t type, uint32_t residx, 375 struct ctl_scsiio *ctsio, 376 struct scsi_per_res_out *cdb, 377 struct scsi_per_res_out_parms* param); 378 static void ctl_pro_preempt_other(struct ctl_lun *lun, 379 union ctl_ha_msg *msg); 380 static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 381 static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 382 static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 383 static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 384 static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 385 static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 386 static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 387 static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 388 static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 389 union ctl_io *ooa_io); 390 static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 391 union ctl_io *starting_io); 392 static int ctl_check_blocked(struct ctl_lun *lun); 393 static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 394 struct ctl_lun *lun, 395 struct ctl_cmd_entry *entry, 396 struct ctl_scsiio *ctsio); 397 //static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 398 static void ctl_failover(void); 399 static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 400 struct ctl_scsiio *ctsio); 401 static int ctl_scsiio(struct ctl_scsiio *ctsio); 402 403 static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 404 static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 405 ctl_ua_type ua_type); 406 static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 407 ctl_ua_type ua_type); 408 static int ctl_abort_task(union ctl_io *io); 409 static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 410 #ifdef CTL_IO_DELAY 411 static void ctl_datamove_timer_wakeup(void *arg); 412 static void ctl_done_timer_wakeup(void *arg); 413 #endif /* CTL_IO_DELAY */ 414 415 static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 416 static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 417 static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 418 static void ctl_datamove_remote_write(union ctl_io *io); 419 static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 420 static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 421 static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 422 static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 423 ctl_ha_dt_cb callback); 424 static void ctl_datamove_remote_read(union ctl_io *io); 425 static void ctl_datamove_remote(union ctl_io *io); 426 static int ctl_process_done(union ctl_io *io, int have_lock); 427 static void ctl_work_thread(void *arg); 428 429 /* 430 * Load the serialization table. This isn't very pretty, but is probably 431 * the easiest way to do it. 432 */ 433 #include "ctl_ser_table.c" 434 435 /* 436 * We only need to define open, close and ioctl routines for this driver. 437 */ 438 static struct cdevsw ctl_cdevsw = { 439 .d_version = D_VERSION, 440 .d_flags = 0, 441 .d_open = ctl_open, 442 .d_close = ctl_close, 443 .d_ioctl = ctl_ioctl, 444 .d_name = "ctl", 445 }; 446 447 448 MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 449 450 /* 451 * If we have the CAM SIM, we may or may not have another SIM that will 452 * cause CTL to get initialized. If not, we need to initialize it. 453 */ 454 SYSINIT(ctl_init, SI_SUB_CONFIGURE, SI_ORDER_THIRD, ctl_init, NULL); 455 456 static void 457 ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 458 union ctl_ha_msg *msg_info) 459 { 460 struct ctl_scsiio *ctsio; 461 462 if (msg_info->hdr.original_sc == NULL) { 463 printf("%s: original_sc == NULL!\n", __func__); 464 /* XXX KDM now what? */ 465 return; 466 } 467 468 ctsio = &msg_info->hdr.original_sc->scsiio; 469 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 470 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 471 ctsio->io_hdr.status = msg_info->hdr.status; 472 ctsio->scsi_status = msg_info->scsi.scsi_status; 473 ctsio->sense_len = msg_info->scsi.sense_len; 474 ctsio->sense_residual = msg_info->scsi.sense_residual; 475 ctsio->residual = msg_info->scsi.residual; 476 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 477 sizeof(ctsio->sense_data)); 478 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 479 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen));; 480 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 481 ctl_wakeup_thread(); 482 } 483 484 static void 485 ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 486 union ctl_ha_msg *msg_info) 487 { 488 struct ctl_scsiio *ctsio; 489 490 if (msg_info->hdr.serializing_sc == NULL) { 491 printf("%s: serializing_sc == NULL!\n", __func__); 492 /* XXX KDM now what? */ 493 return; 494 } 495 496 ctsio = &msg_info->hdr.serializing_sc->scsiio; 497 #if 0 498 /* 499 * Attempt to catch the situation where an I/O has 500 * been freed, and we're using it again. 501 */ 502 if (ctsio->io_hdr.io_type == 0xff) { 503 union ctl_io *tmp_io; 504 tmp_io = (union ctl_io *)ctsio; 505 printf("%s: %p use after free!\n", __func__, 506 ctsio); 507 printf("%s: type %d msg %d cdb %x iptl: " 508 "%d:%d:%d:%d tag 0x%04x " 509 "flag %#x status %x\n", 510 __func__, 511 tmp_io->io_hdr.io_type, 512 tmp_io->io_hdr.msg_type, 513 tmp_io->scsiio.cdb[0], 514 tmp_io->io_hdr.nexus.initid.id, 515 tmp_io->io_hdr.nexus.targ_port, 516 tmp_io->io_hdr.nexus.targ_target.id, 517 tmp_io->io_hdr.nexus.targ_lun, 518 (tmp_io->io_hdr.io_type == 519 CTL_IO_TASK) ? 520 tmp_io->taskio.tag_num : 521 tmp_io->scsiio.tag_num, 522 tmp_io->io_hdr.flags, 523 tmp_io->io_hdr.status); 524 } 525 #endif 526 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 527 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 528 ctl_wakeup_thread(); 529 } 530 531 /* 532 * ISC (Inter Shelf Communication) event handler. Events from the HA 533 * subsystem come in here. 534 */ 535 static void 536 ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 537 { 538 struct ctl_softc *ctl_softc; 539 union ctl_io *io; 540 struct ctl_prio *presio; 541 ctl_ha_status isc_status; 542 543 ctl_softc = control_softc; 544 io = NULL; 545 546 547 #if 0 548 printf("CTL: Isc Msg event %d\n", event); 549 #endif 550 if (event == CTL_HA_EVT_MSG_RECV) { 551 union ctl_ha_msg msg_info; 552 553 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 554 sizeof(msg_info), /*wait*/ 0); 555 #if 0 556 printf("CTL: msg_type %d\n", msg_info.msg_type); 557 #endif 558 if (isc_status != 0) { 559 printf("Error receiving message, status = %d\n", 560 isc_status); 561 return; 562 } 563 mtx_lock(&ctl_softc->ctl_lock); 564 565 switch (msg_info.hdr.msg_type) { 566 case CTL_MSG_SERIALIZE: 567 #if 0 568 printf("Serialize\n"); 569 #endif 570 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 571 if (io == NULL) { 572 printf("ctl_isc_event_handler: can't allocate " 573 "ctl_io!\n"); 574 /* Bad Juju */ 575 /* Need to set busy and send msg back */ 576 mtx_unlock(&ctl_softc->ctl_lock); 577 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 578 msg_info.hdr.status = CTL_SCSI_ERROR; 579 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 580 msg_info.scsi.sense_len = 0; 581 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 582 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 583 } 584 goto bailout; 585 } 586 ctl_zero_io(io); 587 // populate ctsio from msg_info 588 io->io_hdr.io_type = CTL_IO_SCSI; 589 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 590 io->io_hdr.original_sc = msg_info.hdr.original_sc; 591 #if 0 592 printf("pOrig %x\n", (int)msg_info.original_sc); 593 #endif 594 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 595 CTL_FLAG_IO_ACTIVE; 596 /* 597 * If we're in serialization-only mode, we don't 598 * want to go through full done processing. Thus 599 * the COPY flag. 600 * 601 * XXX KDM add another flag that is more specific. 602 */ 603 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 604 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 605 io->io_hdr.nexus = msg_info.hdr.nexus; 606 #if 0 607 printf("targ %d, port %d, iid %d, lun %d\n", 608 io->io_hdr.nexus.targ_target.id, 609 io->io_hdr.nexus.targ_port, 610 io->io_hdr.nexus.initid.id, 611 io->io_hdr.nexus.targ_lun); 612 #endif 613 io->scsiio.tag_num = msg_info.scsi.tag_num; 614 io->scsiio.tag_type = msg_info.scsi.tag_type; 615 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 616 CTL_MAX_CDBLEN); 617 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 618 struct ctl_cmd_entry *entry; 619 uint8_t opcode; 620 621 opcode = io->scsiio.cdb[0]; 622 entry = &ctl_cmd_table[opcode]; 623 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 624 io->io_hdr.flags |= 625 entry->flags & CTL_FLAG_DATA_MASK; 626 } 627 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 628 &io->io_hdr, links); 629 ctl_wakeup_thread(); 630 break; 631 632 /* Performed on the Originating SC, XFER mode only */ 633 case CTL_MSG_DATAMOVE: { 634 struct ctl_sg_entry *sgl; 635 int i, j; 636 637 io = msg_info.hdr.original_sc; 638 if (io == NULL) { 639 printf("%s: original_sc == NULL!\n", __func__); 640 /* XXX KDM do something here */ 641 break; 642 } 643 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 644 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 645 /* 646 * Keep track of this, we need to send it back over 647 * when the datamove is complete. 648 */ 649 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 650 651 if (msg_info.dt.sg_sequence == 0) { 652 /* 653 * XXX KDM we use the preallocated S/G list 654 * here, but we'll need to change this to 655 * dynamic allocation if we need larger S/G 656 * lists. 657 */ 658 if (msg_info.dt.kern_sg_entries > 659 sizeof(io->io_hdr.remote_sglist) / 660 sizeof(io->io_hdr.remote_sglist[0])) { 661 printf("%s: number of S/G entries " 662 "needed %u > allocated num %zd\n", 663 __func__, 664 msg_info.dt.kern_sg_entries, 665 sizeof(io->io_hdr.remote_sglist)/ 666 sizeof(io->io_hdr.remote_sglist[0])); 667 668 /* 669 * XXX KDM send a message back to 670 * the other side to shut down the 671 * DMA. The error will come back 672 * through via the normal channel. 673 */ 674 break; 675 } 676 sgl = io->io_hdr.remote_sglist; 677 memset(sgl, 0, 678 sizeof(io->io_hdr.remote_sglist)); 679 680 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 681 682 io->scsiio.kern_sg_entries = 683 msg_info.dt.kern_sg_entries; 684 io->scsiio.rem_sg_entries = 685 msg_info.dt.kern_sg_entries; 686 io->scsiio.kern_data_len = 687 msg_info.dt.kern_data_len; 688 io->scsiio.kern_total_len = 689 msg_info.dt.kern_total_len; 690 io->scsiio.kern_data_resid = 691 msg_info.dt.kern_data_resid; 692 io->scsiio.kern_rel_offset = 693 msg_info.dt.kern_rel_offset; 694 /* 695 * Clear out per-DMA flags. 696 */ 697 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 698 /* 699 * Add per-DMA flags that are set for this 700 * particular DMA request. 701 */ 702 io->io_hdr.flags |= msg_info.dt.flags & 703 CTL_FLAG_RDMA_MASK; 704 } else 705 sgl = (struct ctl_sg_entry *) 706 io->scsiio.kern_data_ptr; 707 708 for (i = msg_info.dt.sent_sg_entries, j = 0; 709 i < (msg_info.dt.sent_sg_entries + 710 msg_info.dt.cur_sg_entries); i++, j++) { 711 sgl[i].addr = msg_info.dt.sg_list[j].addr; 712 sgl[i].len = msg_info.dt.sg_list[j].len; 713 714 #if 0 715 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 716 __func__, 717 msg_info.dt.sg_list[j].addr, 718 msg_info.dt.sg_list[j].len, 719 sgl[i].addr, sgl[i].len, j, i); 720 #endif 721 } 722 #if 0 723 memcpy(&sgl[msg_info.dt.sent_sg_entries], 724 msg_info.dt.sg_list, 725 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 726 #endif 727 728 /* 729 * If this is the last piece of the I/O, we've got 730 * the full S/G list. Queue processing in the thread. 731 * Otherwise wait for the next piece. 732 */ 733 if (msg_info.dt.sg_last != 0) { 734 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 735 &io->io_hdr, links); 736 ctl_wakeup_thread(); 737 } 738 break; 739 } 740 /* Performed on the Serializing (primary) SC, XFER mode only */ 741 case CTL_MSG_DATAMOVE_DONE: { 742 if (msg_info.hdr.serializing_sc == NULL) { 743 printf("%s: serializing_sc == NULL!\n", 744 __func__); 745 /* XXX KDM now what? */ 746 break; 747 } 748 /* 749 * We grab the sense information here in case 750 * there was a failure, so we can return status 751 * back to the initiator. 752 */ 753 io = msg_info.hdr.serializing_sc; 754 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 755 io->io_hdr.status = msg_info.hdr.status; 756 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 757 io->scsiio.sense_len = msg_info.scsi.sense_len; 758 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 759 io->io_hdr.port_status = msg_info.scsi.fetd_status; 760 io->scsiio.residual = msg_info.scsi.residual; 761 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 762 sizeof(io->scsiio.sense_data)); 763 764 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 765 &io->io_hdr, links); 766 ctl_wakeup_thread(); 767 break; 768 } 769 770 /* Preformed on Originating SC, SER_ONLY mode */ 771 case CTL_MSG_R2R: 772 io = msg_info.hdr.original_sc; 773 if (io == NULL) { 774 printf("%s: Major Bummer\n", __func__); 775 mtx_unlock(&ctl_softc->ctl_lock); 776 return; 777 } else { 778 #if 0 779 printf("pOrig %x\n",(int) ctsio); 780 #endif 781 } 782 io->io_hdr.msg_type = CTL_MSG_R2R; 783 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 784 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 785 &io->io_hdr, links); 786 ctl_wakeup_thread(); 787 break; 788 789 /* 790 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 791 * mode. 792 * Performed on the Originating (i.e. secondary) SC in XFER 793 * mode 794 */ 795 case CTL_MSG_FINISH_IO: 796 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 797 ctl_isc_handler_finish_xfer(ctl_softc, 798 &msg_info); 799 else 800 ctl_isc_handler_finish_ser_only(ctl_softc, 801 &msg_info); 802 break; 803 804 /* Preformed on Originating SC */ 805 case CTL_MSG_BAD_JUJU: 806 io = msg_info.hdr.original_sc; 807 if (io == NULL) { 808 printf("%s: Bad JUJU!, original_sc is NULL!\n", 809 __func__); 810 break; 811 } 812 ctl_copy_sense_data(&msg_info, io); 813 /* 814 * IO should have already been cleaned up on other 815 * SC so clear this flag so we won't send a message 816 * back to finish the IO there. 817 */ 818 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 819 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 820 821 /* io = msg_info.hdr.serializing_sc; */ 822 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 823 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 824 &io->io_hdr, links); 825 ctl_wakeup_thread(); 826 break; 827 828 /* Handle resets sent from the other side */ 829 case CTL_MSG_MANAGE_TASKS: { 830 struct ctl_taskio *taskio; 831 taskio = (struct ctl_taskio *)ctl_alloc_io( 832 (void *)ctl_softc->othersc_pool); 833 if (taskio == NULL) { 834 printf("ctl_isc_event_handler: can't allocate " 835 "ctl_io!\n"); 836 /* Bad Juju */ 837 /* should I just call the proper reset func 838 here??? */ 839 mtx_unlock(&ctl_softc->ctl_lock); 840 goto bailout; 841 } 842 ctl_zero_io((union ctl_io *)taskio); 843 taskio->io_hdr.io_type = CTL_IO_TASK; 844 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 845 taskio->io_hdr.nexus = msg_info.hdr.nexus; 846 taskio->task_action = msg_info.task.task_action; 847 taskio->tag_num = msg_info.task.tag_num; 848 taskio->tag_type = msg_info.task.tag_type; 849 #ifdef CTL_TIME_IO 850 taskio->io_hdr.start_time = time_uptime; 851 getbintime(&taskio->io_hdr.start_bt); 852 #if 0 853 cs_prof_gettime(&taskio->io_hdr.start_ticks); 854 #endif 855 #endif /* CTL_TIME_IO */ 856 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 857 &taskio->io_hdr, links); 858 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 859 ctl_wakeup_thread(); 860 break; 861 } 862 /* Persistent Reserve action which needs attention */ 863 case CTL_MSG_PERS_ACTION: 864 presio = (struct ctl_prio *)ctl_alloc_io( 865 (void *)ctl_softc->othersc_pool); 866 if (presio == NULL) { 867 printf("ctl_isc_event_handler: can't allocate " 868 "ctl_io!\n"); 869 /* Bad Juju */ 870 /* Need to set busy and send msg back */ 871 mtx_unlock(&ctl_softc->ctl_lock); 872 goto bailout; 873 } 874 ctl_zero_io((union ctl_io *)presio); 875 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 876 presio->pr_msg = msg_info.pr; 877 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 878 &presio->io_hdr, links); 879 ctl_wakeup_thread(); 880 break; 881 case CTL_MSG_SYNC_FE: 882 rcv_sync_msg = 1; 883 break; 884 case CTL_MSG_APS_LOCK: { 885 // It's quicker to execute this then to 886 // queue it. 887 struct ctl_lun *lun; 888 struct ctl_page_index *page_index; 889 struct copan_aps_subpage *current_sp; 890 891 lun = ctl_softc->ctl_luns[msg_info.hdr.nexus.targ_lun]; 892 page_index = &lun->mode_pages.index[index_to_aps_page]; 893 current_sp = (struct copan_aps_subpage *) 894 (page_index->page_data + 895 (page_index->page_len * CTL_PAGE_CURRENT)); 896 897 current_sp->lock_active = msg_info.aps.lock_flag; 898 break; 899 } 900 default: 901 printf("How did I get here?\n"); 902 } 903 mtx_unlock(&ctl_softc->ctl_lock); 904 } else if (event == CTL_HA_EVT_MSG_SENT) { 905 if (param != CTL_HA_STATUS_SUCCESS) { 906 printf("Bad status from ctl_ha_msg_send status %d\n", 907 param); 908 } 909 return; 910 } else if (event == CTL_HA_EVT_DISCONNECT) { 911 printf("CTL: Got a disconnect from Isc\n"); 912 return; 913 } else { 914 printf("ctl_isc_event_handler: Unknown event %d\n", event); 915 return; 916 } 917 918 bailout: 919 return; 920 } 921 922 static void 923 ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 924 { 925 struct scsi_sense_data *sense; 926 927 sense = &dest->scsiio.sense_data; 928 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 929 dest->scsiio.scsi_status = src->scsi.scsi_status; 930 dest->scsiio.sense_len = src->scsi.sense_len; 931 dest->io_hdr.status = src->hdr.status; 932 } 933 934 static void 935 ctl_init(void) 936 { 937 struct ctl_softc *softc; 938 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 939 struct ctl_frontend *fe; 940 struct ctl_lun *lun; 941 uint8_t sc_id =0; 942 #if 0 943 int i; 944 #endif 945 int retval; 946 //int isc_retval; 947 948 retval = 0; 949 ctl_pause_rtr = 0; 950 rcv_sync_msg = 0; 951 952 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, M_WAITOK); 953 softc = control_softc; 954 955 memset(softc, 0, sizeof(*softc)); 956 957 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 958 "cam/ctl"); 959 960 softc->dev->si_drv1 = softc; 961 962 /* 963 * By default, return a "bad LUN" peripheral qualifier for unknown 964 * LUNs. The user can override this default using the tunable or 965 * sysctl. See the comment in ctl_inquiry_std() for more details. 966 */ 967 softc->inquiry_pq_no_lun = 1; 968 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 969 &softc->inquiry_pq_no_lun); 970 sysctl_ctx_init(&softc->sysctl_ctx); 971 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 972 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 973 CTLFLAG_RD, 0, "CAM Target Layer"); 974 975 if (softc->sysctl_tree == NULL) { 976 printf("%s: unable to allocate sysctl tree\n", __func__); 977 destroy_dev(softc->dev); 978 free(control_softc, M_DEVBUF); 979 control_softc = NULL; 980 return; 981 } 982 983 SYSCTL_ADD_INT(&softc->sysctl_ctx, 984 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 985 "inquiry_pq_no_lun", CTLFLAG_RW, 986 &softc->inquiry_pq_no_lun, 0, 987 "Report no lun possible for invalid LUNs"); 988 989 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 990 softc->open_count = 0; 991 992 /* 993 * Default to actually sending a SYNCHRONIZE CACHE command down to 994 * the drive. 995 */ 996 softc->flags = CTL_FLAG_REAL_SYNC; 997 998 /* 999 * In Copan's HA scheme, the "master" and "slave" roles are 1000 * figured out through the slot the controller is in. Although it 1001 * is an active/active system, someone has to be in charge. 1002 */ 1003 #ifdef NEEDTOPORT 1004 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1005 #endif 1006 1007 if (sc_id == 0) { 1008 softc->flags |= CTL_FLAG_MASTER_SHELF; 1009 persis_offset = 0; 1010 } else 1011 persis_offset = CTL_MAX_INITIATORS; 1012 1013 /* 1014 * XXX KDM need to figure out where we want to get our target ID 1015 * and WWID. Is it different on each port? 1016 */ 1017 softc->target.id = 0; 1018 softc->target.wwid[0] = 0x12345678; 1019 softc->target.wwid[1] = 0x87654321; 1020 STAILQ_INIT(&softc->lun_list); 1021 STAILQ_INIT(&softc->pending_lun_queue); 1022 STAILQ_INIT(&softc->task_queue); 1023 STAILQ_INIT(&softc->incoming_queue); 1024 STAILQ_INIT(&softc->rtr_queue); 1025 STAILQ_INIT(&softc->done_queue); 1026 STAILQ_INIT(&softc->isc_queue); 1027 STAILQ_INIT(&softc->fe_list); 1028 STAILQ_INIT(&softc->be_list); 1029 STAILQ_INIT(&softc->io_pools); 1030 1031 lun = &softc->lun; 1032 1033 /* 1034 * We don't bother calling these with ctl_lock held here, because, 1035 * in theory, no one else can try to do anything while we're in our 1036 * module init routine. 1037 */ 1038 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1039 &internal_pool)!= 0){ 1040 printf("ctl: can't allocate %d entry internal pool, " 1041 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1042 return; 1043 } 1044 1045 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1046 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1047 printf("ctl: can't allocate %d entry emergency pool, " 1048 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1049 ctl_pool_free(softc, internal_pool); 1050 return; 1051 } 1052 1053 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1054 &other_pool) != 0) 1055 { 1056 printf("ctl: can't allocate %d entry other SC pool, " 1057 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1058 ctl_pool_free(softc, internal_pool); 1059 ctl_pool_free(softc, emergency_pool); 1060 return; 1061 } 1062 1063 softc->internal_pool = internal_pool; 1064 softc->emergency_pool = emergency_pool; 1065 softc->othersc_pool = other_pool; 1066 1067 ctl_pool_acquire(internal_pool); 1068 ctl_pool_acquire(emergency_pool); 1069 ctl_pool_acquire(other_pool); 1070 1071 /* 1072 * We used to allocate a processor LUN here. The new scheme is to 1073 * just let the user allocate LUNs as he sees fit. 1074 */ 1075 #if 0 1076 mtx_lock(&softc->ctl_lock); 1077 ctl_alloc_lun(softc, lun, /*be_lun*/NULL, /*target*/softc->target); 1078 mtx_unlock(&softc->ctl_lock); 1079 #endif 1080 1081 if (kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0, 1082 "ctl_thrd") != 0) { 1083 printf("error creating CTL work thread!\n"); 1084 ctl_free_lun(lun); 1085 ctl_pool_free(softc, internal_pool); 1086 ctl_pool_free(softc, emergency_pool); 1087 ctl_pool_free(softc, other_pool); 1088 return; 1089 } 1090 printf("ctl: CAM Target Layer loaded\n"); 1091 1092 /* 1093 * Initialize the initiator and portname mappings 1094 */ 1095 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1096 1097 /* 1098 * Initialize the ioctl front end. 1099 */ 1100 fe = &softc->ioctl_info.fe; 1101 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1102 fe->port_type = CTL_PORT_IOCTL; 1103 fe->num_requested_ctl_io = 100; 1104 fe->port_name = softc->ioctl_info.port_name; 1105 fe->port_online = ctl_ioctl_online; 1106 fe->port_offline = ctl_ioctl_offline; 1107 fe->onoff_arg = &softc->ioctl_info; 1108 fe->targ_enable = ctl_ioctl_targ_enable; 1109 fe->targ_disable = ctl_ioctl_targ_disable; 1110 fe->lun_enable = ctl_ioctl_lun_enable; 1111 fe->lun_disable = ctl_ioctl_lun_disable; 1112 fe->targ_lun_arg = &softc->ioctl_info; 1113 fe->fe_datamove = ctl_ioctl_datamove; 1114 fe->fe_done = ctl_ioctl_done; 1115 fe->max_targets = 15; 1116 fe->max_target_id = 15; 1117 1118 if (ctl_frontend_register(&softc->ioctl_info.fe, 1119 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1120 printf("ctl: ioctl front end registration failed, will " 1121 "continue anyway\n"); 1122 } 1123 1124 #ifdef CTL_IO_DELAY 1125 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1126 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1127 sizeof(struct callout), CTL_TIMER_BYTES); 1128 return; 1129 } 1130 #endif /* CTL_IO_DELAY */ 1131 1132 } 1133 1134 void 1135 ctl_shutdown(void) 1136 { 1137 struct ctl_softc *softc; 1138 struct ctl_lun *lun, *next_lun; 1139 struct ctl_io_pool *pool, *next_pool; 1140 1141 softc = (struct ctl_softc *)control_softc; 1142 1143 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1144 printf("ctl: ioctl front end deregistration failed\n"); 1145 1146 mtx_lock(&softc->ctl_lock); 1147 1148 /* 1149 * Free up each LUN. 1150 */ 1151 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1152 next_lun = STAILQ_NEXT(lun, links); 1153 ctl_free_lun(lun); 1154 } 1155 1156 /* 1157 * This will rip the rug out from under any FETDs or anyone else 1158 * that has a pool allocated. Since we increment our module 1159 * refcount any time someone outside the main CTL module allocates 1160 * a pool, we shouldn't have any problems here. The user won't be 1161 * able to unload the CTL module until client modules have 1162 * successfully unloaded. 1163 */ 1164 for (pool = STAILQ_FIRST(&softc->io_pools); pool != NULL; 1165 pool = next_pool) { 1166 next_pool = STAILQ_NEXT(pool, links); 1167 ctl_pool_free(softc, pool); 1168 } 1169 1170 mtx_unlock(&softc->ctl_lock); 1171 1172 #if 0 1173 ctl_shutdown_thread(softc->work_thread); 1174 #endif 1175 1176 mtx_destroy(&softc->ctl_lock); 1177 1178 destroy_dev(softc->dev); 1179 1180 sysctl_ctx_free(&softc->sysctl_ctx); 1181 1182 free(control_softc, M_DEVBUF); 1183 control_softc = NULL; 1184 1185 printf("ctl: CAM Target Layer unloaded\n"); 1186 } 1187 1188 /* 1189 * XXX KDM should we do some access checks here? Bump a reference count to 1190 * prevent a CTL module from being unloaded while someone has it open? 1191 */ 1192 static int 1193 ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1194 { 1195 return (0); 1196 } 1197 1198 static int 1199 ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1200 { 1201 return (0); 1202 } 1203 1204 int 1205 ctl_port_enable(ctl_port_type port_type) 1206 { 1207 struct ctl_softc *softc; 1208 struct ctl_frontend *fe; 1209 1210 if (ctl_is_single == 0) { 1211 union ctl_ha_msg msg_info; 1212 int isc_retval; 1213 1214 #if 0 1215 printf("%s: HA mode, synchronizing frontend enable\n", 1216 __func__); 1217 #endif 1218 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1219 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1220 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1221 printf("Sync msg send error retval %d\n", isc_retval); 1222 } 1223 if (!rcv_sync_msg) { 1224 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1225 sizeof(msg_info), 1); 1226 } 1227 #if 0 1228 printf("CTL:Frontend Enable\n"); 1229 } else { 1230 printf("%s: single mode, skipping frontend synchronization\n", 1231 __func__); 1232 #endif 1233 } 1234 1235 softc = control_softc; 1236 1237 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1238 if (port_type & fe->port_type) 1239 { 1240 #if 0 1241 printf("port %d\n", fe->targ_port); 1242 #endif 1243 ctl_frontend_online(fe); 1244 } 1245 } 1246 1247 return (0); 1248 } 1249 1250 int 1251 ctl_port_disable(ctl_port_type port_type) 1252 { 1253 struct ctl_softc *softc; 1254 struct ctl_frontend *fe; 1255 1256 softc = control_softc; 1257 1258 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1259 if (port_type & fe->port_type) 1260 ctl_frontend_offline(fe); 1261 } 1262 1263 return (0); 1264 } 1265 1266 /* 1267 * Returns 0 for success, 1 for failure. 1268 * Currently the only failure mode is if there aren't enough entries 1269 * allocated. So, in case of a failure, look at num_entries_dropped, 1270 * reallocate and try again. 1271 */ 1272 int 1273 ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1274 int *num_entries_filled, int *num_entries_dropped, 1275 ctl_port_type port_type, int no_virtual) 1276 { 1277 struct ctl_softc *softc; 1278 struct ctl_frontend *fe; 1279 int entries_dropped, entries_filled; 1280 int retval; 1281 int i; 1282 1283 softc = control_softc; 1284 1285 retval = 0; 1286 entries_filled = 0; 1287 entries_dropped = 0; 1288 1289 i = 0; 1290 mtx_lock(&softc->ctl_lock); 1291 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1292 struct ctl_port_entry *entry; 1293 1294 if ((fe->port_type & port_type) == 0) 1295 continue; 1296 1297 if ((no_virtual != 0) 1298 && (fe->virtual_port != 0)) 1299 continue; 1300 1301 if (entries_filled >= num_entries_alloced) { 1302 entries_dropped++; 1303 continue; 1304 } 1305 entry = &entries[i]; 1306 1307 entry->port_type = fe->port_type; 1308 strlcpy(entry->port_name, fe->port_name, 1309 sizeof(entry->port_name)); 1310 entry->physical_port = fe->physical_port; 1311 entry->virtual_port = fe->virtual_port; 1312 entry->wwnn = fe->wwnn; 1313 entry->wwpn = fe->wwpn; 1314 1315 i++; 1316 entries_filled++; 1317 } 1318 1319 mtx_unlock(&softc->ctl_lock); 1320 1321 if (entries_dropped > 0) 1322 retval = 1; 1323 1324 *num_entries_dropped = entries_dropped; 1325 *num_entries_filled = entries_filled; 1326 1327 return (retval); 1328 } 1329 1330 static void 1331 ctl_ioctl_online(void *arg) 1332 { 1333 struct ctl_ioctl_info *ioctl_info; 1334 1335 ioctl_info = (struct ctl_ioctl_info *)arg; 1336 1337 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1338 } 1339 1340 static void 1341 ctl_ioctl_offline(void *arg) 1342 { 1343 struct ctl_ioctl_info *ioctl_info; 1344 1345 ioctl_info = (struct ctl_ioctl_info *)arg; 1346 1347 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1348 } 1349 1350 /* 1351 * Remove an initiator by port number and initiator ID. 1352 * Returns 0 for success, 1 for failure. 1353 * Assumes the caller does NOT hold the CTL lock. 1354 */ 1355 int 1356 ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1357 { 1358 struct ctl_softc *softc; 1359 1360 softc = control_softc; 1361 1362 if ((targ_port < 0) 1363 || (targ_port > CTL_MAX_PORTS)) { 1364 printf("%s: invalid port number %d\n", __func__, targ_port); 1365 return (1); 1366 } 1367 if (iid > CTL_MAX_INIT_PER_PORT) { 1368 printf("%s: initiator ID %u > maximun %u!\n", 1369 __func__, iid, CTL_MAX_INIT_PER_PORT); 1370 return (1); 1371 } 1372 1373 mtx_lock(&softc->ctl_lock); 1374 1375 softc->wwpn_iid[targ_port][iid].in_use = 0; 1376 1377 mtx_unlock(&softc->ctl_lock); 1378 1379 return (0); 1380 } 1381 1382 /* 1383 * Add an initiator to the initiator map. 1384 * Returns 0 for success, 1 for failure. 1385 * Assumes the caller does NOT hold the CTL lock. 1386 */ 1387 int 1388 ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1389 { 1390 struct ctl_softc *softc; 1391 int retval; 1392 1393 softc = control_softc; 1394 1395 retval = 0; 1396 1397 if ((targ_port < 0) 1398 || (targ_port > CTL_MAX_PORTS)) { 1399 printf("%s: invalid port number %d\n", __func__, targ_port); 1400 return (1); 1401 } 1402 if (iid > CTL_MAX_INIT_PER_PORT) { 1403 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1404 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1405 return (1); 1406 } 1407 1408 mtx_lock(&softc->ctl_lock); 1409 1410 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1411 /* 1412 * We don't treat this as an error. 1413 */ 1414 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1415 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1416 __func__, targ_port, iid, (uintmax_t)wwpn); 1417 goto bailout; 1418 } 1419 1420 /* 1421 * This is an error, but what do we do about it? The 1422 * driver is telling us we have a new WWPN for this 1423 * initiator ID, so we pretty much need to use it. 1424 */ 1425 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1426 "still at that address\n", __func__, targ_port, iid, 1427 (uintmax_t)wwpn, 1428 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1429 1430 /* 1431 * XXX KDM clear have_ca and ua_pending on each LUN for 1432 * this initiator. 1433 */ 1434 } 1435 softc->wwpn_iid[targ_port][iid].in_use = 1; 1436 softc->wwpn_iid[targ_port][iid].iid = iid; 1437 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1438 softc->wwpn_iid[targ_port][iid].port = targ_port; 1439 1440 bailout: 1441 1442 mtx_unlock(&softc->ctl_lock); 1443 1444 return (retval); 1445 } 1446 1447 /* 1448 * XXX KDM should we pretend to do something in the target/lun 1449 * enable/disable functions? 1450 */ 1451 static int 1452 ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1453 { 1454 return (0); 1455 } 1456 1457 static int 1458 ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1459 { 1460 return (0); 1461 } 1462 1463 static int 1464 ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1465 { 1466 return (0); 1467 } 1468 1469 static int 1470 ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1471 { 1472 return (0); 1473 } 1474 1475 /* 1476 * Data movement routine for the CTL ioctl frontend port. 1477 */ 1478 static int 1479 ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1480 { 1481 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1482 struct ctl_sg_entry ext_entry, kern_entry; 1483 int ext_sglen, ext_sg_entries, kern_sg_entries; 1484 int ext_sg_start, ext_offset; 1485 int len_to_copy, len_copied; 1486 int kern_watermark, ext_watermark; 1487 int ext_sglist_malloced; 1488 int i, j; 1489 1490 ext_sglist_malloced = 0; 1491 ext_sg_start = 0; 1492 ext_offset = 0; 1493 1494 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1495 1496 /* 1497 * If this flag is set, fake the data transfer. 1498 */ 1499 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1500 ctsio->ext_data_filled = ctsio->ext_data_len; 1501 goto bailout; 1502 } 1503 1504 /* 1505 * To simplify things here, if we have a single buffer, stick it in 1506 * a S/G entry and just make it a single entry S/G list. 1507 */ 1508 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1509 int len_seen; 1510 1511 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1512 1513 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1514 M_WAITOK); 1515 if (ext_sglist == NULL) { 1516 ctl_set_internal_failure(ctsio, 1517 /*sks_valid*/ 0, 1518 /*retry_count*/ 0); 1519 return (CTL_RETVAL_COMPLETE); 1520 } 1521 ext_sglist_malloced = 1; 1522 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1523 ext_sglen) != 0) { 1524 ctl_set_internal_failure(ctsio, 1525 /*sks_valid*/ 0, 1526 /*retry_count*/ 0); 1527 goto bailout; 1528 } 1529 ext_sg_entries = ctsio->ext_sg_entries; 1530 len_seen = 0; 1531 for (i = 0; i < ext_sg_entries; i++) { 1532 if ((len_seen + ext_sglist[i].len) >= 1533 ctsio->ext_data_filled) { 1534 ext_sg_start = i; 1535 ext_offset = ctsio->ext_data_filled - len_seen; 1536 break; 1537 } 1538 len_seen += ext_sglist[i].len; 1539 } 1540 } else { 1541 ext_sglist = &ext_entry; 1542 ext_sglist->addr = ctsio->ext_data_ptr; 1543 ext_sglist->len = ctsio->ext_data_len; 1544 ext_sg_entries = 1; 1545 ext_sg_start = 0; 1546 ext_offset = ctsio->ext_data_filled; 1547 } 1548 1549 if (ctsio->kern_sg_entries > 0) { 1550 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1551 kern_sg_entries = ctsio->kern_sg_entries; 1552 } else { 1553 kern_sglist = &kern_entry; 1554 kern_sglist->addr = ctsio->kern_data_ptr; 1555 kern_sglist->len = ctsio->kern_data_len; 1556 kern_sg_entries = 1; 1557 } 1558 1559 1560 kern_watermark = 0; 1561 ext_watermark = ext_offset; 1562 len_copied = 0; 1563 for (i = ext_sg_start, j = 0; 1564 i < ext_sg_entries && j < kern_sg_entries;) { 1565 uint8_t *ext_ptr, *kern_ptr; 1566 1567 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1568 kern_sglist[j].len - kern_watermark); 1569 1570 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1571 ext_ptr = ext_ptr + ext_watermark; 1572 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1573 /* 1574 * XXX KDM fix this! 1575 */ 1576 panic("need to implement bus address support"); 1577 #if 0 1578 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1579 #endif 1580 } else 1581 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1582 kern_ptr = kern_ptr + kern_watermark; 1583 1584 kern_watermark += len_to_copy; 1585 ext_watermark += len_to_copy; 1586 1587 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1588 CTL_FLAG_DATA_IN) { 1589 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1590 "bytes to user\n", len_to_copy)); 1591 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1592 "to %p\n", kern_ptr, ext_ptr)); 1593 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1594 ctl_set_internal_failure(ctsio, 1595 /*sks_valid*/ 0, 1596 /*retry_count*/ 0); 1597 goto bailout; 1598 } 1599 } else { 1600 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1601 "bytes from user\n", len_to_copy)); 1602 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1603 "to %p\n", ext_ptr, kern_ptr)); 1604 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1605 ctl_set_internal_failure(ctsio, 1606 /*sks_valid*/ 0, 1607 /*retry_count*/0); 1608 goto bailout; 1609 } 1610 } 1611 1612 len_copied += len_to_copy; 1613 1614 if (ext_sglist[i].len == ext_watermark) { 1615 i++; 1616 ext_watermark = 0; 1617 } 1618 1619 if (kern_sglist[j].len == kern_watermark) { 1620 j++; 1621 kern_watermark = 0; 1622 } 1623 } 1624 1625 ctsio->ext_data_filled += len_copied; 1626 1627 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1628 "kern_sg_entries: %d\n", ext_sg_entries, 1629 kern_sg_entries)); 1630 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1631 "kern_data_len = %d\n", ctsio->ext_data_len, 1632 ctsio->kern_data_len)); 1633 1634 1635 /* XXX KDM set residual?? */ 1636 bailout: 1637 1638 if (ext_sglist_malloced != 0) 1639 free(ext_sglist, M_CTL); 1640 1641 return (CTL_RETVAL_COMPLETE); 1642 } 1643 1644 /* 1645 * Serialize a command that went down the "wrong" side, and so was sent to 1646 * this controller for execution. The logic is a little different than the 1647 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1648 * sent back to the other side, but in the success case, we execute the 1649 * command on this side (XFER mode) or tell the other side to execute it 1650 * (SER_ONLY mode). 1651 */ 1652 static int 1653 ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1654 { 1655 struct ctl_softc *ctl_softc; 1656 union ctl_ha_msg msg_info; 1657 struct ctl_lun *lun; 1658 int retval = 0; 1659 1660 ctl_softc = control_softc; 1661 if (have_lock == 0) 1662 mtx_lock(&ctl_softc->ctl_lock); 1663 1664 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 1665 if (lun==NULL) 1666 { 1667 /* 1668 * Why isn't LUN defined? The other side wouldn't 1669 * send a cmd if the LUN is undefined. 1670 */ 1671 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1672 1673 /* "Logical unit not supported" */ 1674 ctl_set_sense_data(&msg_info.scsi.sense_data, 1675 lun, 1676 /*sense_format*/SSD_TYPE_NONE, 1677 /*current_error*/ 1, 1678 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1679 /*asc*/ 0x25, 1680 /*ascq*/ 0x00, 1681 SSD_ELEM_NONE); 1682 1683 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1684 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1685 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1686 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1687 msg_info.hdr.serializing_sc = NULL; 1688 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1689 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1690 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1691 } 1692 if (have_lock == 0) 1693 mtx_unlock(&ctl_softc->ctl_lock); 1694 return(1); 1695 1696 } 1697 1698 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1699 1700 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1701 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1702 ooa_links))) { 1703 case CTL_ACTION_BLOCK: 1704 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1705 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1706 blocked_links); 1707 break; 1708 case CTL_ACTION_PASS: 1709 case CTL_ACTION_SKIP: 1710 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1711 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1712 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1713 &ctsio->io_hdr, links); 1714 } else { 1715 1716 /* send msg back to other side */ 1717 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1718 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1719 msg_info.hdr.msg_type = CTL_MSG_R2R; 1720 #if 0 1721 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1722 #endif 1723 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1724 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1725 } 1726 } 1727 break; 1728 case CTL_ACTION_OVERLAP: 1729 /* OVERLAPPED COMMANDS ATTEMPTED */ 1730 ctl_set_sense_data(&msg_info.scsi.sense_data, 1731 lun, 1732 /*sense_format*/SSD_TYPE_NONE, 1733 /*current_error*/ 1, 1734 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1735 /*asc*/ 0x4E, 1736 /*ascq*/ 0x00, 1737 SSD_ELEM_NONE); 1738 1739 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1740 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1741 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1742 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1743 msg_info.hdr.serializing_sc = NULL; 1744 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1745 #if 0 1746 printf("BAD JUJU:Major Bummer Overlap\n"); 1747 #endif 1748 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1749 retval = 1; 1750 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1751 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1752 } 1753 break; 1754 case CTL_ACTION_OVERLAP_TAG: 1755 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1756 ctl_set_sense_data(&msg_info.scsi.sense_data, 1757 lun, 1758 /*sense_format*/SSD_TYPE_NONE, 1759 /*current_error*/ 1, 1760 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1761 /*asc*/ 0x4D, 1762 /*ascq*/ ctsio->tag_num & 0xff, 1763 SSD_ELEM_NONE); 1764 1765 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1766 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1767 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1768 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1769 msg_info.hdr.serializing_sc = NULL; 1770 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1771 #if 0 1772 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1773 #endif 1774 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1775 retval = 1; 1776 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1777 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1778 } 1779 break; 1780 case CTL_ACTION_ERROR: 1781 default: 1782 /* "Internal target failure" */ 1783 ctl_set_sense_data(&msg_info.scsi.sense_data, 1784 lun, 1785 /*sense_format*/SSD_TYPE_NONE, 1786 /*current_error*/ 1, 1787 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1788 /*asc*/ 0x44, 1789 /*ascq*/ 0x00, 1790 SSD_ELEM_NONE); 1791 1792 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1793 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1794 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1795 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1796 msg_info.hdr.serializing_sc = NULL; 1797 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1798 #if 0 1799 printf("BAD JUJU:Major Bummer HW Error\n"); 1800 #endif 1801 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1802 retval = 1; 1803 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1804 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1805 } 1806 break; 1807 } 1808 if (have_lock == 0) 1809 mtx_unlock(&ctl_softc->ctl_lock); 1810 return (retval); 1811 } 1812 1813 static int 1814 ctl_ioctl_submit_wait(union ctl_io *io) 1815 { 1816 struct ctl_fe_ioctl_params params; 1817 ctl_fe_ioctl_state last_state; 1818 int done, retval; 1819 1820 retval = 0; 1821 1822 bzero(¶ms, sizeof(params)); 1823 1824 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1825 cv_init(¶ms.sem, "ctlioccv"); 1826 params.state = CTL_IOCTL_INPROG; 1827 last_state = params.state; 1828 1829 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1830 1831 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1832 1833 /* This shouldn't happen */ 1834 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1835 return (retval); 1836 1837 done = 0; 1838 1839 do { 1840 mtx_lock(¶ms.ioctl_mtx); 1841 /* 1842 * Check the state here, and don't sleep if the state has 1843 * already changed (i.e. wakeup has already occured, but we 1844 * weren't waiting yet). 1845 */ 1846 if (params.state == last_state) { 1847 /* XXX KDM cv_wait_sig instead? */ 1848 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1849 } 1850 last_state = params.state; 1851 1852 switch (params.state) { 1853 case CTL_IOCTL_INPROG: 1854 /* Why did we wake up? */ 1855 /* XXX KDM error here? */ 1856 mtx_unlock(¶ms.ioctl_mtx); 1857 break; 1858 case CTL_IOCTL_DATAMOVE: 1859 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1860 1861 /* 1862 * change last_state back to INPROG to avoid 1863 * deadlock on subsequent data moves. 1864 */ 1865 params.state = last_state = CTL_IOCTL_INPROG; 1866 1867 mtx_unlock(¶ms.ioctl_mtx); 1868 ctl_ioctl_do_datamove(&io->scsiio); 1869 /* 1870 * Note that in some cases, most notably writes, 1871 * this will queue the I/O and call us back later. 1872 * In other cases, generally reads, this routine 1873 * will immediately call back and wake us up, 1874 * probably using our own context. 1875 */ 1876 io->scsiio.be_move_done(io); 1877 break; 1878 case CTL_IOCTL_DONE: 1879 mtx_unlock(¶ms.ioctl_mtx); 1880 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1881 done = 1; 1882 break; 1883 default: 1884 mtx_unlock(¶ms.ioctl_mtx); 1885 /* XXX KDM error here? */ 1886 break; 1887 } 1888 } while (done == 0); 1889 1890 mtx_destroy(¶ms.ioctl_mtx); 1891 cv_destroy(¶ms.sem); 1892 1893 return (CTL_RETVAL_COMPLETE); 1894 } 1895 1896 static void 1897 ctl_ioctl_datamove(union ctl_io *io) 1898 { 1899 struct ctl_fe_ioctl_params *params; 1900 1901 params = (struct ctl_fe_ioctl_params *) 1902 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1903 1904 mtx_lock(¶ms->ioctl_mtx); 1905 params->state = CTL_IOCTL_DATAMOVE; 1906 cv_broadcast(¶ms->sem); 1907 mtx_unlock(¶ms->ioctl_mtx); 1908 } 1909 1910 static void 1911 ctl_ioctl_done(union ctl_io *io) 1912 { 1913 struct ctl_fe_ioctl_params *params; 1914 1915 params = (struct ctl_fe_ioctl_params *) 1916 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1917 1918 mtx_lock(¶ms->ioctl_mtx); 1919 params->state = CTL_IOCTL_DONE; 1920 cv_broadcast(¶ms->sem); 1921 mtx_unlock(¶ms->ioctl_mtx); 1922 } 1923 1924 static void 1925 ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1926 { 1927 struct ctl_fe_ioctl_startstop_info *sd_info; 1928 1929 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1930 1931 sd_info->hs_info.status = metatask->status; 1932 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1933 sd_info->hs_info.luns_complete = 1934 metatask->taskinfo.startstop.luns_complete; 1935 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1936 1937 cv_broadcast(&sd_info->sem); 1938 } 1939 1940 static void 1941 ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1942 { 1943 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1944 1945 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1946 1947 mtx_lock(fe_bbr_info->lock); 1948 fe_bbr_info->bbr_info->status = metatask->status; 1949 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1950 fe_bbr_info->wakeup_done = 1; 1951 mtx_unlock(fe_bbr_info->lock); 1952 1953 cv_broadcast(&fe_bbr_info->sem); 1954 } 1955 1956 /* 1957 * Must be called with the ctl_lock held. 1958 * Returns 0 for success, errno for failure. 1959 */ 1960 static int 1961 ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1962 struct ctl_ooa *ooa_hdr) 1963 { 1964 union ctl_io *io; 1965 int retval; 1966 1967 retval = 0; 1968 1969 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1970 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1971 ooa_links)) { 1972 struct ctl_ooa_entry *cur_entry, entry; 1973 1974 /* 1975 * If we've got more than we can fit, just count the 1976 * remaining entries. 1977 */ 1978 if (*cur_fill_num >= ooa_hdr->alloc_num) 1979 continue; 1980 1981 cur_entry = &ooa_hdr->entries[*cur_fill_num]; 1982 1983 bzero(&entry, sizeof(entry)); 1984 1985 entry.tag_num = io->scsiio.tag_num; 1986 entry.lun_num = lun->lun; 1987 #ifdef CTL_TIME_IO 1988 entry.start_bt = io->io_hdr.start_bt; 1989 #endif 1990 bcopy(io->scsiio.cdb, entry.cdb, io->scsiio.cdb_len); 1991 entry.cdb_len = io->scsiio.cdb_len; 1992 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1993 entry.cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1994 1995 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1996 entry.cmd_flags |= CTL_OOACMD_FLAG_DMA; 1997 1998 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1999 entry.cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2000 2001 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2002 entry.cmd_flags |= CTL_OOACMD_FLAG_RTR; 2003 2004 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2005 entry.cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2006 2007 retval = copyout(&entry, cur_entry, sizeof(entry)); 2008 2009 if (retval != 0) 2010 break; 2011 } 2012 2013 return (retval); 2014 } 2015 2016 static void * 2017 ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2018 size_t error_str_len) 2019 { 2020 void *kptr; 2021 2022 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2023 if (kptr == NULL) { 2024 snprintf(error_str, error_str_len, "Cannot allocate %d bytes", 2025 len); 2026 return (NULL); 2027 } 2028 2029 if (copyin(user_addr, kptr, len) != 0) { 2030 snprintf(error_str, error_str_len, "Error copying %d bytes " 2031 "from user address %p to kernel address %p", len, 2032 user_addr, kptr); 2033 free(kptr, M_CTL); 2034 return (NULL); 2035 } 2036 2037 return (kptr); 2038 } 2039 2040 static void 2041 ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2042 { 2043 int i; 2044 2045 if (be_args == NULL) 2046 return; 2047 2048 for (i = 0; i < num_be_args; i++) { 2049 free(be_args[i].kname, M_CTL); 2050 free(be_args[i].kvalue, M_CTL); 2051 } 2052 2053 free(be_args, M_CTL); 2054 } 2055 2056 static struct ctl_be_arg * 2057 ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2058 char *error_str, size_t error_str_len) 2059 { 2060 struct ctl_be_arg *args; 2061 int i; 2062 2063 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2064 error_str, error_str_len); 2065 2066 if (args == NULL) 2067 goto bailout; 2068 2069 for (i = 0; i < num_be_args; i++) { 2070 uint8_t *tmpptr; 2071 2072 args[i].kname = ctl_copyin_alloc(args[i].name, 2073 args[i].namelen, error_str, error_str_len); 2074 if (args[i].kname == NULL) 2075 goto bailout; 2076 2077 if (args[i].kname[args[i].namelen - 1] != '\0') { 2078 snprintf(error_str, error_str_len, "Argument %d " 2079 "name is not NUL-terminated", i); 2080 goto bailout; 2081 } 2082 2083 args[i].kvalue = NULL; 2084 2085 tmpptr = ctl_copyin_alloc(args[i].value, 2086 args[i].vallen, error_str, error_str_len); 2087 if (tmpptr == NULL) 2088 goto bailout; 2089 2090 args[i].kvalue = tmpptr; 2091 2092 if ((args[i].flags & CTL_BEARG_ASCII) 2093 && (tmpptr[args[i].vallen - 1] != '\0')) { 2094 snprintf(error_str, error_str_len, "Argument %d " 2095 "value is not NUL-terminated", i); 2096 goto bailout; 2097 } 2098 } 2099 2100 return (args); 2101 bailout: 2102 2103 ctl_free_args(num_be_args, args); 2104 2105 return (NULL); 2106 } 2107 2108 /* 2109 * Escape characters that are illegal or not recommended in XML. 2110 */ 2111 int 2112 ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2113 { 2114 int retval; 2115 2116 retval = 0; 2117 2118 for (; *str; str++) { 2119 switch (*str) { 2120 case '&': 2121 retval = sbuf_printf(sb, "&"); 2122 break; 2123 case '>': 2124 retval = sbuf_printf(sb, ">"); 2125 break; 2126 case '<': 2127 retval = sbuf_printf(sb, "<"); 2128 break; 2129 default: 2130 retval = sbuf_putc(sb, *str); 2131 break; 2132 } 2133 2134 if (retval != 0) 2135 break; 2136 2137 } 2138 2139 return (retval); 2140 } 2141 2142 static int 2143 ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2144 struct thread *td) 2145 { 2146 struct ctl_softc *softc; 2147 int retval; 2148 2149 softc = control_softc; 2150 2151 retval = 0; 2152 2153 switch (cmd) { 2154 case CTL_IO: { 2155 union ctl_io *io; 2156 void *pool_tmp; 2157 2158 /* 2159 * If we haven't been "enabled", don't allow any SCSI I/O 2160 * to this FETD. 2161 */ 2162 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2163 retval = -EPERM; 2164 break; 2165 } 2166 2167 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2168 if (io == NULL) { 2169 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2170 retval = -ENOSPC; 2171 break; 2172 } 2173 2174 /* 2175 * Need to save the pool reference so it doesn't get 2176 * spammed by the user's ctl_io. 2177 */ 2178 pool_tmp = io->io_hdr.pool; 2179 2180 memcpy(io, (void *)addr, sizeof(*io)); 2181 2182 io->io_hdr.pool = pool_tmp; 2183 /* 2184 * No status yet, so make sure the status is set properly. 2185 */ 2186 io->io_hdr.status = CTL_STATUS_NONE; 2187 2188 /* 2189 * The user sets the initiator ID, target and LUN IDs. 2190 */ 2191 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2192 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2193 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2194 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2195 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2196 2197 retval = ctl_ioctl_submit_wait(io); 2198 2199 if (retval != 0) { 2200 ctl_free_io(io); 2201 break; 2202 } 2203 2204 memcpy((void *)addr, io, sizeof(*io)); 2205 2206 /* return this to our pool */ 2207 ctl_free_io(io); 2208 2209 break; 2210 } 2211 case CTL_ENABLE_PORT: 2212 case CTL_DISABLE_PORT: 2213 case CTL_SET_PORT_WWNS: { 2214 struct ctl_frontend *fe; 2215 struct ctl_port_entry *entry; 2216 2217 entry = (struct ctl_port_entry *)addr; 2218 2219 mtx_lock(&softc->ctl_lock); 2220 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2221 int action, done; 2222 2223 action = 0; 2224 done = 0; 2225 2226 if ((entry->port_type == CTL_PORT_NONE) 2227 && (entry->targ_port == fe->targ_port)) { 2228 /* 2229 * If the user only wants to enable or 2230 * disable or set WWNs on a specific port, 2231 * do the operation and we're done. 2232 */ 2233 action = 1; 2234 done = 1; 2235 } else if (entry->port_type & fe->port_type) { 2236 /* 2237 * Compare the user's type mask with the 2238 * particular frontend type to see if we 2239 * have a match. 2240 */ 2241 action = 1; 2242 done = 0; 2243 2244 /* 2245 * Make sure the user isn't trying to set 2246 * WWNs on multiple ports at the same time. 2247 */ 2248 if (cmd == CTL_SET_PORT_WWNS) { 2249 printf("%s: Can't set WWNs on " 2250 "multiple ports\n", __func__); 2251 retval = EINVAL; 2252 break; 2253 } 2254 } 2255 if (action != 0) { 2256 /* 2257 * XXX KDM we have to drop the lock here, 2258 * because the online/offline operations 2259 * can potentially block. We need to 2260 * reference count the frontends so they 2261 * can't go away, 2262 */ 2263 mtx_unlock(&softc->ctl_lock); 2264 2265 if (cmd == CTL_ENABLE_PORT) 2266 ctl_frontend_online(fe); 2267 else if (cmd == CTL_DISABLE_PORT) 2268 ctl_frontend_offline(fe); 2269 2270 mtx_lock(&softc->ctl_lock); 2271 2272 if (cmd == CTL_SET_PORT_WWNS) 2273 ctl_frontend_set_wwns(fe, 2274 (entry->flags & CTL_PORT_WWNN_VALID) ? 2275 1 : 0, entry->wwnn, 2276 (entry->flags & CTL_PORT_WWPN_VALID) ? 2277 1 : 0, entry->wwpn); 2278 } 2279 if (done != 0) 2280 break; 2281 } 2282 mtx_unlock(&softc->ctl_lock); 2283 break; 2284 } 2285 case CTL_GET_PORT_LIST: { 2286 struct ctl_frontend *fe; 2287 struct ctl_port_list *list; 2288 int i; 2289 2290 list = (struct ctl_port_list *)addr; 2291 2292 if (list->alloc_len != (list->alloc_num * 2293 sizeof(struct ctl_port_entry))) { 2294 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2295 "alloc_num %u * sizeof(struct ctl_port_entry) " 2296 "%zu\n", __func__, list->alloc_len, 2297 list->alloc_num, sizeof(struct ctl_port_entry)); 2298 retval = EINVAL; 2299 break; 2300 } 2301 list->fill_len = 0; 2302 list->fill_num = 0; 2303 list->dropped_num = 0; 2304 i = 0; 2305 mtx_lock(&softc->ctl_lock); 2306 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2307 struct ctl_port_entry entry, *list_entry; 2308 2309 if (list->fill_num >= list->alloc_num) { 2310 list->dropped_num++; 2311 continue; 2312 } 2313 2314 entry.port_type = fe->port_type; 2315 strlcpy(entry.port_name, fe->port_name, 2316 sizeof(entry.port_name)); 2317 entry.targ_port = fe->targ_port; 2318 entry.physical_port = fe->physical_port; 2319 entry.virtual_port = fe->virtual_port; 2320 entry.wwnn = fe->wwnn; 2321 entry.wwpn = fe->wwpn; 2322 if (fe->status & CTL_PORT_STATUS_ONLINE) 2323 entry.online = 1; 2324 else 2325 entry.online = 0; 2326 2327 list_entry = &list->entries[i]; 2328 2329 retval = copyout(&entry, list_entry, sizeof(entry)); 2330 if (retval != 0) { 2331 printf("%s: CTL_GET_PORT_LIST: copyout " 2332 "returned %d\n", __func__, retval); 2333 break; 2334 } 2335 i++; 2336 list->fill_num++; 2337 list->fill_len += sizeof(entry); 2338 } 2339 mtx_unlock(&softc->ctl_lock); 2340 2341 /* 2342 * If this is non-zero, we had a copyout fault, so there's 2343 * probably no point in attempting to set the status inside 2344 * the structure. 2345 */ 2346 if (retval != 0) 2347 break; 2348 2349 if (list->dropped_num > 0) 2350 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2351 else 2352 list->status = CTL_PORT_LIST_OK; 2353 break; 2354 } 2355 case CTL_DUMP_OOA: { 2356 struct ctl_lun *lun; 2357 union ctl_io *io; 2358 char printbuf[128]; 2359 struct sbuf sb; 2360 2361 mtx_lock(&softc->ctl_lock); 2362 printf("Dumping OOA queues:\n"); 2363 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2364 for (io = (union ctl_io *)TAILQ_FIRST( 2365 &lun->ooa_queue); io != NULL; 2366 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2367 ooa_links)) { 2368 sbuf_new(&sb, printbuf, sizeof(printbuf), 2369 SBUF_FIXEDLEN); 2370 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2371 (intmax_t)lun->lun, 2372 io->scsiio.tag_num, 2373 (io->io_hdr.flags & 2374 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2375 (io->io_hdr.flags & 2376 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2377 (io->io_hdr.flags & 2378 CTL_FLAG_ABORT) ? " ABORT" : "", 2379 (io->io_hdr.flags & 2380 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2381 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2382 sbuf_finish(&sb); 2383 printf("%s\n", sbuf_data(&sb)); 2384 } 2385 } 2386 printf("OOA queues dump done\n"); 2387 mtx_unlock(&softc->ctl_lock); 2388 break; 2389 } 2390 case CTL_GET_OOA: { 2391 struct ctl_lun *lun; 2392 struct ctl_ooa *ooa_hdr; 2393 uint32_t cur_fill_num; 2394 2395 ooa_hdr = (struct ctl_ooa *)addr; 2396 2397 if ((ooa_hdr->alloc_len == 0) 2398 || (ooa_hdr->alloc_num == 0)) { 2399 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2400 "must be non-zero\n", __func__, 2401 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2402 retval = EINVAL; 2403 break; 2404 } 2405 2406 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2407 sizeof(struct ctl_ooa_entry))) { 2408 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2409 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2410 __func__, ooa_hdr->alloc_len, 2411 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2412 retval = EINVAL; 2413 break; 2414 } 2415 2416 mtx_lock(&softc->ctl_lock); 2417 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2418 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2419 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2420 mtx_unlock(&softc->ctl_lock); 2421 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2422 __func__, (uintmax_t)ooa_hdr->lun_num); 2423 retval = EINVAL; 2424 break; 2425 } 2426 2427 cur_fill_num = 0; 2428 2429 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2430 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2431 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2432 ooa_hdr); 2433 if (retval != 0) 2434 break; 2435 } 2436 if (retval != 0) { 2437 mtx_unlock(&softc->ctl_lock); 2438 break; 2439 } 2440 } else { 2441 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2442 2443 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr); 2444 } 2445 mtx_unlock(&softc->ctl_lock); 2446 2447 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2448 ooa_hdr->fill_len = ooa_hdr->fill_num * 2449 sizeof(struct ctl_ooa_entry); 2450 2451 getbintime(&ooa_hdr->cur_bt); 2452 2453 if (cur_fill_num > ooa_hdr->alloc_num) { 2454 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2455 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2456 } else { 2457 ooa_hdr->dropped_num = 0; 2458 ooa_hdr->status = CTL_OOA_OK; 2459 } 2460 break; 2461 } 2462 case CTL_CHECK_OOA: { 2463 union ctl_io *io; 2464 struct ctl_lun *lun; 2465 struct ctl_ooa_info *ooa_info; 2466 2467 2468 ooa_info = (struct ctl_ooa_info *)addr; 2469 2470 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2471 ooa_info->status = CTL_OOA_INVALID_LUN; 2472 break; 2473 } 2474 mtx_lock(&softc->ctl_lock); 2475 lun = softc->ctl_luns[ooa_info->lun_id]; 2476 if (lun == NULL) { 2477 mtx_unlock(&softc->ctl_lock); 2478 ooa_info->status = CTL_OOA_INVALID_LUN; 2479 break; 2480 } 2481 2482 ooa_info->num_entries = 0; 2483 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2484 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2485 &io->io_hdr, ooa_links)) { 2486 ooa_info->num_entries++; 2487 } 2488 2489 mtx_unlock(&softc->ctl_lock); 2490 ooa_info->status = CTL_OOA_SUCCESS; 2491 2492 break; 2493 } 2494 case CTL_HARD_START: 2495 case CTL_HARD_STOP: { 2496 struct ctl_fe_ioctl_startstop_info ss_info; 2497 struct cfi_metatask *metatask; 2498 struct mtx hs_mtx; 2499 2500 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2501 2502 cv_init(&ss_info.sem, "hard start/stop cv" ); 2503 2504 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2505 if (metatask == NULL) { 2506 retval = ENOMEM; 2507 mtx_destroy(&hs_mtx); 2508 break; 2509 } 2510 2511 if (cmd == CTL_HARD_START) 2512 metatask->tasktype = CFI_TASK_STARTUP; 2513 else 2514 metatask->tasktype = CFI_TASK_SHUTDOWN; 2515 2516 metatask->callback = ctl_ioctl_hard_startstop_callback; 2517 metatask->callback_arg = &ss_info; 2518 2519 cfi_action(metatask); 2520 2521 /* Wait for the callback */ 2522 mtx_lock(&hs_mtx); 2523 cv_wait_sig(&ss_info.sem, &hs_mtx); 2524 mtx_unlock(&hs_mtx); 2525 2526 /* 2527 * All information has been copied from the metatask by the 2528 * time cv_broadcast() is called, so we free the metatask here. 2529 */ 2530 cfi_free_metatask(metatask); 2531 2532 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2533 2534 mtx_destroy(&hs_mtx); 2535 break; 2536 } 2537 case CTL_BBRREAD: { 2538 struct ctl_bbrread_info *bbr_info; 2539 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2540 struct mtx bbr_mtx; 2541 struct cfi_metatask *metatask; 2542 2543 bbr_info = (struct ctl_bbrread_info *)addr; 2544 2545 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2546 2547 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2548 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2549 2550 fe_bbr_info.bbr_info = bbr_info; 2551 fe_bbr_info.lock = &bbr_mtx; 2552 2553 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2554 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2555 2556 if (metatask == NULL) { 2557 mtx_destroy(&bbr_mtx); 2558 cv_destroy(&fe_bbr_info.sem); 2559 retval = ENOMEM; 2560 break; 2561 } 2562 metatask->tasktype = CFI_TASK_BBRREAD; 2563 metatask->callback = ctl_ioctl_bbrread_callback; 2564 metatask->callback_arg = &fe_bbr_info; 2565 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2566 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2567 metatask->taskinfo.bbrread.len = bbr_info->len; 2568 2569 cfi_action(metatask); 2570 2571 mtx_lock(&bbr_mtx); 2572 while (fe_bbr_info.wakeup_done == 0) 2573 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2574 mtx_unlock(&bbr_mtx); 2575 2576 bbr_info->status = metatask->status; 2577 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2578 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2579 memcpy(&bbr_info->sense_data, 2580 &metatask->taskinfo.bbrread.sense_data, 2581 ctl_min(sizeof(bbr_info->sense_data), 2582 sizeof(metatask->taskinfo.bbrread.sense_data))); 2583 2584 cfi_free_metatask(metatask); 2585 2586 mtx_destroy(&bbr_mtx); 2587 cv_destroy(&fe_bbr_info.sem); 2588 2589 break; 2590 } 2591 case CTL_DELAY_IO: { 2592 struct ctl_io_delay_info *delay_info; 2593 #ifdef CTL_IO_DELAY 2594 struct ctl_lun *lun; 2595 #endif /* CTL_IO_DELAY */ 2596 2597 delay_info = (struct ctl_io_delay_info *)addr; 2598 2599 #ifdef CTL_IO_DELAY 2600 mtx_lock(&softc->ctl_lock); 2601 2602 if ((delay_info->lun_id > CTL_MAX_LUNS) 2603 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2604 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2605 } else { 2606 lun = softc->ctl_luns[delay_info->lun_id]; 2607 2608 delay_info->status = CTL_DELAY_STATUS_OK; 2609 2610 switch (delay_info->delay_type) { 2611 case CTL_DELAY_TYPE_CONT: 2612 break; 2613 case CTL_DELAY_TYPE_ONESHOT: 2614 break; 2615 default: 2616 delay_info->status = 2617 CTL_DELAY_STATUS_INVALID_TYPE; 2618 break; 2619 } 2620 2621 switch (delay_info->delay_loc) { 2622 case CTL_DELAY_LOC_DATAMOVE: 2623 lun->delay_info.datamove_type = 2624 delay_info->delay_type; 2625 lun->delay_info.datamove_delay = 2626 delay_info->delay_secs; 2627 break; 2628 case CTL_DELAY_LOC_DONE: 2629 lun->delay_info.done_type = 2630 delay_info->delay_type; 2631 lun->delay_info.done_delay = 2632 delay_info->delay_secs; 2633 break; 2634 default: 2635 delay_info->status = 2636 CTL_DELAY_STATUS_INVALID_LOC; 2637 break; 2638 } 2639 } 2640 2641 mtx_unlock(&softc->ctl_lock); 2642 #else 2643 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2644 #endif /* CTL_IO_DELAY */ 2645 break; 2646 } 2647 case CTL_REALSYNC_SET: { 2648 int *syncstate; 2649 2650 syncstate = (int *)addr; 2651 2652 mtx_lock(&softc->ctl_lock); 2653 switch (*syncstate) { 2654 case 0: 2655 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2656 break; 2657 case 1: 2658 softc->flags |= CTL_FLAG_REAL_SYNC; 2659 break; 2660 default: 2661 retval = -EINVAL; 2662 break; 2663 } 2664 mtx_unlock(&softc->ctl_lock); 2665 break; 2666 } 2667 case CTL_REALSYNC_GET: { 2668 int *syncstate; 2669 2670 syncstate = (int*)addr; 2671 2672 mtx_lock(&softc->ctl_lock); 2673 if (softc->flags & CTL_FLAG_REAL_SYNC) 2674 *syncstate = 1; 2675 else 2676 *syncstate = 0; 2677 mtx_unlock(&softc->ctl_lock); 2678 2679 break; 2680 } 2681 case CTL_SETSYNC: 2682 case CTL_GETSYNC: { 2683 struct ctl_sync_info *sync_info; 2684 struct ctl_lun *lun; 2685 2686 sync_info = (struct ctl_sync_info *)addr; 2687 2688 mtx_lock(&softc->ctl_lock); 2689 lun = softc->ctl_luns[sync_info->lun_id]; 2690 if (lun == NULL) { 2691 mtx_unlock(&softc->ctl_lock); 2692 sync_info->status = CTL_GS_SYNC_NO_LUN; 2693 } 2694 /* 2695 * Get or set the sync interval. We're not bounds checking 2696 * in the set case, hopefully the user won't do something 2697 * silly. 2698 */ 2699 if (cmd == CTL_GETSYNC) 2700 sync_info->sync_interval = lun->sync_interval; 2701 else 2702 lun->sync_interval = sync_info->sync_interval; 2703 2704 mtx_unlock(&softc->ctl_lock); 2705 2706 sync_info->status = CTL_GS_SYNC_OK; 2707 2708 break; 2709 } 2710 case CTL_GETSTATS: { 2711 struct ctl_stats *stats; 2712 struct ctl_lun *lun; 2713 int i; 2714 2715 stats = (struct ctl_stats *)addr; 2716 2717 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2718 stats->alloc_len) { 2719 stats->status = CTL_SS_NEED_MORE_SPACE; 2720 stats->num_luns = softc->num_luns; 2721 break; 2722 } 2723 /* 2724 * XXX KDM no locking here. If the LUN list changes, 2725 * things can blow up. 2726 */ 2727 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2728 i++, lun = STAILQ_NEXT(lun, links)) { 2729 retval = copyout(&lun->stats, &stats->lun_stats[i], 2730 sizeof(lun->stats)); 2731 if (retval != 0) 2732 break; 2733 } 2734 stats->num_luns = softc->num_luns; 2735 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2736 softc->num_luns; 2737 stats->status = CTL_SS_OK; 2738 #ifdef CTL_TIME_IO 2739 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2740 #else 2741 stats->flags = CTL_STATS_FLAG_NONE; 2742 #endif 2743 getnanouptime(&stats->timestamp); 2744 break; 2745 } 2746 case CTL_ERROR_INJECT: { 2747 struct ctl_error_desc *err_desc, *new_err_desc; 2748 struct ctl_lun *lun; 2749 2750 err_desc = (struct ctl_error_desc *)addr; 2751 2752 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2753 M_WAITOK | M_ZERO); 2754 if (new_err_desc == NULL) { 2755 printf("%s: CTL_ERROR_INJECT: error allocating %zu " 2756 "bytes\n", __func__, sizeof(*new_err_desc)); 2757 retval = ENOMEM; 2758 break; 2759 } 2760 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2761 2762 mtx_lock(&softc->ctl_lock); 2763 lun = softc->ctl_luns[err_desc->lun_id]; 2764 if (lun == NULL) { 2765 mtx_unlock(&softc->ctl_lock); 2766 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2767 __func__, (uintmax_t)err_desc->lun_id); 2768 retval = EINVAL; 2769 break; 2770 } 2771 2772 /* 2773 * We could do some checking here to verify the validity 2774 * of the request, but given the complexity of error 2775 * injection requests, the checking logic would be fairly 2776 * complex. 2777 * 2778 * For now, if the request is invalid, it just won't get 2779 * executed and might get deleted. 2780 */ 2781 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2782 2783 /* 2784 * XXX KDM check to make sure the serial number is unique, 2785 * in case we somehow manage to wrap. That shouldn't 2786 * happen for a very long time, but it's the right thing to 2787 * do. 2788 */ 2789 new_err_desc->serial = lun->error_serial; 2790 err_desc->serial = lun->error_serial; 2791 lun->error_serial++; 2792 2793 mtx_unlock(&softc->ctl_lock); 2794 break; 2795 } 2796 case CTL_ERROR_INJECT_DELETE: { 2797 struct ctl_error_desc *delete_desc, *desc, *desc2; 2798 struct ctl_lun *lun; 2799 int delete_done; 2800 2801 delete_desc = (struct ctl_error_desc *)addr; 2802 delete_done = 0; 2803 2804 mtx_lock(&softc->ctl_lock); 2805 lun = softc->ctl_luns[delete_desc->lun_id]; 2806 if (lun == NULL) { 2807 mtx_unlock(&softc->ctl_lock); 2808 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2809 __func__, (uintmax_t)delete_desc->lun_id); 2810 retval = EINVAL; 2811 break; 2812 } 2813 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2814 if (desc->serial != delete_desc->serial) 2815 continue; 2816 2817 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2818 links); 2819 free(desc, M_CTL); 2820 delete_done = 1; 2821 } 2822 mtx_unlock(&softc->ctl_lock); 2823 if (delete_done == 0) { 2824 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2825 "error serial %ju on LUN %u\n", __func__, 2826 delete_desc->serial, delete_desc->lun_id); 2827 retval = EINVAL; 2828 break; 2829 } 2830 break; 2831 } 2832 case CTL_DUMP_STRUCTS: { 2833 int i, j, k; 2834 struct ctl_frontend *fe; 2835 2836 printf("CTL IID to WWPN map start:\n"); 2837 for (i = 0; i < CTL_MAX_PORTS; i++) { 2838 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2839 if (softc->wwpn_iid[i][j].in_use == 0) 2840 continue; 2841 2842 printf("port %d iid %u WWPN %#jx\n", 2843 softc->wwpn_iid[i][j].port, 2844 softc->wwpn_iid[i][j].iid, 2845 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2846 } 2847 } 2848 printf("CTL IID to WWPN map end\n"); 2849 printf("CTL Persistent Reservation information start:\n"); 2850 for (i = 0; i < CTL_MAX_LUNS; i++) { 2851 struct ctl_lun *lun; 2852 2853 lun = softc->ctl_luns[i]; 2854 2855 if ((lun == NULL) 2856 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2857 continue; 2858 2859 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2860 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2861 if (lun->per_res[j+k].registered == 0) 2862 continue; 2863 printf("LUN %d port %d iid %d key " 2864 "%#jx\n", i, j, k, 2865 (uintmax_t)scsi_8btou64( 2866 lun->per_res[j+k].res_key.key)); 2867 } 2868 } 2869 } 2870 printf("CTL Persistent Reservation information end\n"); 2871 printf("CTL Frontends:\n"); 2872 /* 2873 * XXX KDM calling this without a lock. We'd likely want 2874 * to drop the lock before calling the frontend's dump 2875 * routine anyway. 2876 */ 2877 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2878 printf("Frontend %s Type %u pport %d vport %d WWNN " 2879 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2880 fe->physical_port, fe->virtual_port, 2881 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2882 2883 /* 2884 * Frontends are not required to support the dump 2885 * routine. 2886 */ 2887 if (fe->fe_dump == NULL) 2888 continue; 2889 2890 fe->fe_dump(); 2891 } 2892 printf("CTL Frontend information end\n"); 2893 break; 2894 } 2895 case CTL_LUN_REQ: { 2896 struct ctl_lun_req *lun_req; 2897 struct ctl_backend_driver *backend; 2898 2899 lun_req = (struct ctl_lun_req *)addr; 2900 2901 backend = ctl_backend_find(lun_req->backend); 2902 if (backend == NULL) { 2903 lun_req->status = CTL_LUN_ERROR; 2904 snprintf(lun_req->error_str, 2905 sizeof(lun_req->error_str), 2906 "Backend \"%s\" not found.", 2907 lun_req->backend); 2908 break; 2909 } 2910 if (lun_req->num_be_args > 0) { 2911 lun_req->kern_be_args = ctl_copyin_args( 2912 lun_req->num_be_args, 2913 lun_req->be_args, 2914 lun_req->error_str, 2915 sizeof(lun_req->error_str)); 2916 if (lun_req->kern_be_args == NULL) { 2917 lun_req->status = CTL_LUN_ERROR; 2918 break; 2919 } 2920 } 2921 2922 retval = backend->ioctl(dev, cmd, addr, flag, td); 2923 2924 if (lun_req->num_be_args > 0) { 2925 ctl_free_args(lun_req->num_be_args, 2926 lun_req->kern_be_args); 2927 } 2928 break; 2929 } 2930 case CTL_LUN_LIST: { 2931 struct sbuf *sb; 2932 struct ctl_lun *lun; 2933 struct ctl_lun_list *list; 2934 2935 list = (struct ctl_lun_list *)addr; 2936 2937 /* 2938 * Allocate a fixed length sbuf here, based on the length 2939 * of the user's buffer. We could allocate an auto-extending 2940 * buffer, and then tell the user how much larger our 2941 * amount of data is than his buffer, but that presents 2942 * some problems: 2943 * 2944 * 1. The sbuf(9) routines use a blocking malloc, and so 2945 * we can't hold a lock while calling them with an 2946 * auto-extending buffer. 2947 * 2948 * 2. There is not currently a LUN reference counting 2949 * mechanism, outside of outstanding transactions on 2950 * the LUN's OOA queue. So a LUN could go away on us 2951 * while we're getting the LUN number, backend-specific 2952 * information, etc. Thus, given the way things 2953 * currently work, we need to hold the CTL lock while 2954 * grabbing LUN information. 2955 * 2956 * So, from the user's standpoint, the best thing to do is 2957 * allocate what he thinks is a reasonable buffer length, 2958 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2959 * double the buffer length and try again. (And repeat 2960 * that until he succeeds.) 2961 */ 2962 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 2963 if (sb == NULL) { 2964 list->status = CTL_LUN_LIST_ERROR; 2965 snprintf(list->error_str, sizeof(list->error_str), 2966 "Unable to allocate %d bytes for LUN list", 2967 list->alloc_len); 2968 break; 2969 } 2970 2971 sbuf_printf(sb, "<ctllunlist>\n"); 2972 2973 mtx_lock(&softc->ctl_lock); 2974 2975 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2976 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 2977 (uintmax_t)lun->lun); 2978 2979 /* 2980 * Bail out as soon as we see that we've overfilled 2981 * the buffer. 2982 */ 2983 if (retval != 0) 2984 break; 2985 2986 retval = sbuf_printf(sb, "<backend_type>%s" 2987 "</backend_type>\n", 2988 (lun->backend == NULL) ? "none" : 2989 lun->backend->name); 2990 2991 if (retval != 0) 2992 break; 2993 2994 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 2995 lun->be_lun->lun_type); 2996 2997 if (retval != 0) 2998 break; 2999 3000 if (lun->backend == NULL) { 3001 retval = sbuf_printf(sb, "</lun>\n"); 3002 if (retval != 0) 3003 break; 3004 continue; 3005 } 3006 3007 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3008 (lun->be_lun->maxlba > 0) ? 3009 lun->be_lun->maxlba + 1 : 0); 3010 3011 if (retval != 0) 3012 break; 3013 3014 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3015 lun->be_lun->blocksize); 3016 3017 if (retval != 0) 3018 break; 3019 3020 retval = sbuf_printf(sb, "<serial_number>"); 3021 3022 if (retval != 0) 3023 break; 3024 3025 retval = ctl_sbuf_printf_esc(sb, 3026 lun->be_lun->serial_num); 3027 3028 if (retval != 0) 3029 break; 3030 3031 retval = sbuf_printf(sb, "</serial_number>\n"); 3032 3033 if (retval != 0) 3034 break; 3035 3036 retval = sbuf_printf(sb, "<device_id>"); 3037 3038 if (retval != 0) 3039 break; 3040 3041 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3042 3043 if (retval != 0) 3044 break; 3045 3046 retval = sbuf_printf(sb, "</device_id>\n"); 3047 3048 if (retval != 0) 3049 break; 3050 3051 if (lun->backend->lun_info == NULL) { 3052 retval = sbuf_printf(sb, "</lun>\n"); 3053 if (retval != 0) 3054 break; 3055 continue; 3056 } 3057 3058 retval =lun->backend->lun_info(lun->be_lun->be_lun, sb); 3059 3060 if (retval != 0) 3061 break; 3062 3063 retval = sbuf_printf(sb, "</lun>\n"); 3064 3065 if (retval != 0) 3066 break; 3067 } 3068 mtx_unlock(&softc->ctl_lock); 3069 3070 if ((retval != 0) 3071 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3072 retval = 0; 3073 sbuf_delete(sb); 3074 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3075 snprintf(list->error_str, sizeof(list->error_str), 3076 "Out of space, %d bytes is too small", 3077 list->alloc_len); 3078 break; 3079 } 3080 3081 sbuf_finish(sb); 3082 3083 retval = copyout(sbuf_data(sb), list->lun_xml, 3084 sbuf_len(sb) + 1); 3085 3086 list->fill_len = sbuf_len(sb) + 1; 3087 list->status = CTL_LUN_LIST_OK; 3088 sbuf_delete(sb); 3089 break; 3090 } 3091 default: { 3092 /* XXX KDM should we fix this? */ 3093 #if 0 3094 struct ctl_backend_driver *backend; 3095 unsigned int type; 3096 int found; 3097 3098 found = 0; 3099 3100 /* 3101 * We encode the backend type as the ioctl type for backend 3102 * ioctls. So parse it out here, and then search for a 3103 * backend of this type. 3104 */ 3105 type = _IOC_TYPE(cmd); 3106 3107 STAILQ_FOREACH(backend, &softc->be_list, links) { 3108 if (backend->type == type) { 3109 found = 1; 3110 break; 3111 } 3112 } 3113 if (found == 0) { 3114 printf("ctl: unknown ioctl command %#lx or backend " 3115 "%d\n", cmd, type); 3116 retval = -EINVAL; 3117 break; 3118 } 3119 retval = backend->ioctl(dev, cmd, addr, flag, td); 3120 #endif 3121 retval = ENOTTY; 3122 break; 3123 } 3124 } 3125 return (retval); 3126 } 3127 3128 uint32_t 3129 ctl_get_initindex(struct ctl_nexus *nexus) 3130 { 3131 if (nexus->targ_port < CTL_MAX_PORTS) 3132 return (nexus->initid.id + 3133 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3134 else 3135 return (nexus->initid.id + 3136 ((nexus->targ_port - CTL_MAX_PORTS) * 3137 CTL_MAX_INIT_PER_PORT)); 3138 } 3139 3140 uint32_t 3141 ctl_get_resindex(struct ctl_nexus *nexus) 3142 { 3143 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3144 } 3145 3146 uint32_t 3147 ctl_port_idx(int port_num) 3148 { 3149 if (port_num < CTL_MAX_PORTS) 3150 return(port_num); 3151 else 3152 return(port_num - CTL_MAX_PORTS); 3153 } 3154 3155 /* 3156 * Note: This only works for bitmask sizes that are at least 32 bits, and 3157 * that are a power of 2. 3158 */ 3159 int 3160 ctl_ffz(uint32_t *mask, uint32_t size) 3161 { 3162 uint32_t num_chunks, num_pieces; 3163 int i, j; 3164 3165 num_chunks = (size >> 5); 3166 if (num_chunks == 0) 3167 num_chunks++; 3168 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3169 3170 for (i = 0; i < num_chunks; i++) { 3171 for (j = 0; j < num_pieces; j++) { 3172 if ((mask[i] & (1 << j)) == 0) 3173 return ((i << 5) + j); 3174 } 3175 } 3176 3177 return (-1); 3178 } 3179 3180 int 3181 ctl_set_mask(uint32_t *mask, uint32_t bit) 3182 { 3183 uint32_t chunk, piece; 3184 3185 chunk = bit >> 5; 3186 piece = bit % (sizeof(uint32_t) * 8); 3187 3188 if ((mask[chunk] & (1 << piece)) != 0) 3189 return (-1); 3190 else 3191 mask[chunk] |= (1 << piece); 3192 3193 return (0); 3194 } 3195 3196 int 3197 ctl_clear_mask(uint32_t *mask, uint32_t bit) 3198 { 3199 uint32_t chunk, piece; 3200 3201 chunk = bit >> 5; 3202 piece = bit % (sizeof(uint32_t) * 8); 3203 3204 if ((mask[chunk] & (1 << piece)) == 0) 3205 return (-1); 3206 else 3207 mask[chunk] &= ~(1 << piece); 3208 3209 return (0); 3210 } 3211 3212 int 3213 ctl_is_set(uint32_t *mask, uint32_t bit) 3214 { 3215 uint32_t chunk, piece; 3216 3217 chunk = bit >> 5; 3218 piece = bit % (sizeof(uint32_t) * 8); 3219 3220 if ((mask[chunk] & (1 << piece)) == 0) 3221 return (0); 3222 else 3223 return (1); 3224 } 3225 3226 #ifdef unused 3227 /* 3228 * The bus, target and lun are optional, they can be filled in later. 3229 * can_wait is used to determine whether we can wait on the malloc or not. 3230 */ 3231 union ctl_io* 3232 ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3233 uint32_t targ_lun, int can_wait) 3234 { 3235 union ctl_io *io; 3236 3237 if (can_wait) 3238 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3239 else 3240 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3241 3242 if (io != NULL) { 3243 io->io_hdr.io_type = io_type; 3244 io->io_hdr.targ_port = targ_port; 3245 /* 3246 * XXX KDM this needs to change/go away. We need to move 3247 * to a preallocated pool of ctl_scsiio structures. 3248 */ 3249 io->io_hdr.nexus.targ_target.id = targ_target; 3250 io->io_hdr.nexus.targ_lun = targ_lun; 3251 } 3252 3253 return (io); 3254 } 3255 3256 void 3257 ctl_kfree_io(union ctl_io *io) 3258 { 3259 free(io, M_CTL); 3260 } 3261 #endif /* unused */ 3262 3263 /* 3264 * ctl_softc, pool_type, total_ctl_io are passed in. 3265 * npool is passed out. 3266 */ 3267 int 3268 ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3269 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3270 { 3271 uint32_t i; 3272 union ctl_io *cur_io, *next_io; 3273 struct ctl_io_pool *pool; 3274 int retval; 3275 3276 retval = 0; 3277 3278 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, M_NOWAIT); 3279 if (pool == NULL) { 3280 retval = -ENOMEM; 3281 goto bailout; 3282 } 3283 3284 memset(pool, 0, sizeof(*pool)); 3285 3286 pool->type = pool_type; 3287 pool->ctl_softc = ctl_softc; 3288 3289 mtx_lock(&ctl_softc->ctl_lock); 3290 pool->id = ctl_softc->cur_pool_id++; 3291 mtx_unlock(&ctl_softc->ctl_lock); 3292 3293 pool->flags = CTL_POOL_FLAG_NONE; 3294 STAILQ_INIT(&pool->free_queue); 3295 3296 /* 3297 * XXX KDM other options here: 3298 * - allocate a page at a time 3299 * - allocate one big chunk of memory. 3300 * Page allocation might work well, but would take a little more 3301 * tracking. 3302 */ 3303 for (i = 0; i < total_ctl_io; i++) { 3304 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3305 M_NOWAIT); 3306 if (cur_io == NULL) { 3307 retval = ENOMEM; 3308 break; 3309 } 3310 cur_io->io_hdr.pool = pool; 3311 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3312 pool->total_ctl_io++; 3313 pool->free_ctl_io++; 3314 } 3315 3316 if (retval != 0) { 3317 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3318 cur_io != NULL; cur_io = next_io) { 3319 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3320 links); 3321 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3322 ctl_io_hdr, links); 3323 free(cur_io, M_CTL); 3324 } 3325 3326 free(pool, M_CTL); 3327 goto bailout; 3328 } 3329 mtx_lock(&ctl_softc->ctl_lock); 3330 ctl_softc->num_pools++; 3331 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3332 /* 3333 * Increment our usage count if this is an external consumer, so we 3334 * can't get unloaded until the external consumer (most likely a 3335 * FETD) unloads and frees his pool. 3336 * 3337 * XXX KDM will this increment the caller's module use count, or 3338 * mine? 3339 */ 3340 #if 0 3341 if ((pool_type != CTL_POOL_EMERGENCY) 3342 && (pool_type != CTL_POOL_INTERNAL) 3343 && (pool_type != CTL_POOL_IOCTL) 3344 && (pool_type != CTL_POOL_4OTHERSC)) 3345 MOD_INC_USE_COUNT; 3346 #endif 3347 3348 mtx_unlock(&ctl_softc->ctl_lock); 3349 3350 *npool = pool; 3351 3352 bailout: 3353 3354 return (retval); 3355 } 3356 3357 /* 3358 * Caller must hold ctl_softc->ctl_lock. 3359 */ 3360 int 3361 ctl_pool_acquire(struct ctl_io_pool *pool) 3362 { 3363 if (pool == NULL) 3364 return (-EINVAL); 3365 3366 if (pool->flags & CTL_POOL_FLAG_INVALID) 3367 return (-EINVAL); 3368 3369 pool->refcount++; 3370 3371 return (0); 3372 } 3373 3374 /* 3375 * Caller must hold ctl_softc->ctl_lock. 3376 */ 3377 int 3378 ctl_pool_invalidate(struct ctl_io_pool *pool) 3379 { 3380 if (pool == NULL) 3381 return (-EINVAL); 3382 3383 pool->flags |= CTL_POOL_FLAG_INVALID; 3384 3385 return (0); 3386 } 3387 3388 /* 3389 * Caller must hold ctl_softc->ctl_lock. 3390 */ 3391 int 3392 ctl_pool_release(struct ctl_io_pool *pool) 3393 { 3394 if (pool == NULL) 3395 return (-EINVAL); 3396 3397 if ((--pool->refcount == 0) 3398 && (pool->flags & CTL_POOL_FLAG_INVALID)) { 3399 ctl_pool_free(pool->ctl_softc, pool); 3400 } 3401 3402 return (0); 3403 } 3404 3405 /* 3406 * Must be called with ctl_softc->ctl_lock held. 3407 */ 3408 void 3409 ctl_pool_free(struct ctl_softc *ctl_softc, struct ctl_io_pool *pool) 3410 { 3411 union ctl_io *cur_io, *next_io; 3412 3413 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3414 cur_io != NULL; cur_io = next_io) { 3415 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3416 links); 3417 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, ctl_io_hdr, 3418 links); 3419 free(cur_io, M_CTL); 3420 } 3421 3422 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3423 ctl_softc->num_pools--; 3424 3425 /* 3426 * XXX KDM will this decrement the caller's usage count or mine? 3427 */ 3428 #if 0 3429 if ((pool->type != CTL_POOL_EMERGENCY) 3430 && (pool->type != CTL_POOL_INTERNAL) 3431 && (pool->type != CTL_POOL_IOCTL)) 3432 MOD_DEC_USE_COUNT; 3433 #endif 3434 3435 free(pool, M_CTL); 3436 } 3437 3438 /* 3439 * This routine does not block (except for spinlocks of course). 3440 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3441 * possible. 3442 */ 3443 union ctl_io * 3444 ctl_alloc_io(void *pool_ref) 3445 { 3446 union ctl_io *io; 3447 struct ctl_softc *ctl_softc; 3448 struct ctl_io_pool *pool, *npool; 3449 struct ctl_io_pool *emergency_pool; 3450 3451 pool = (struct ctl_io_pool *)pool_ref; 3452 3453 if (pool == NULL) { 3454 printf("%s: pool is NULL\n", __func__); 3455 return (NULL); 3456 } 3457 3458 emergency_pool = NULL; 3459 3460 ctl_softc = pool->ctl_softc; 3461 3462 mtx_lock(&ctl_softc->ctl_lock); 3463 /* 3464 * First, try to get the io structure from the user's pool. 3465 */ 3466 if (ctl_pool_acquire(pool) == 0) { 3467 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3468 if (io != NULL) { 3469 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3470 pool->total_allocated++; 3471 pool->free_ctl_io--; 3472 mtx_unlock(&ctl_softc->ctl_lock); 3473 return (io); 3474 } else 3475 ctl_pool_release(pool); 3476 } 3477 /* 3478 * If he doesn't have any io structures left, search for an 3479 * emergency pool and grab one from there. 3480 */ 3481 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3482 if (npool->type != CTL_POOL_EMERGENCY) 3483 continue; 3484 3485 if (ctl_pool_acquire(npool) != 0) 3486 continue; 3487 3488 emergency_pool = npool; 3489 3490 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3491 if (io != NULL) { 3492 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3493 npool->total_allocated++; 3494 npool->free_ctl_io--; 3495 mtx_unlock(&ctl_softc->ctl_lock); 3496 return (io); 3497 } else 3498 ctl_pool_release(npool); 3499 } 3500 3501 /* Drop the spinlock before we malloc */ 3502 mtx_unlock(&ctl_softc->ctl_lock); 3503 3504 /* 3505 * The emergency pool (if it exists) didn't have one, so try an 3506 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3507 */ 3508 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3509 if (io != NULL) { 3510 /* 3511 * If the emergency pool exists but is empty, add this 3512 * ctl_io to its list when it gets freed. 3513 */ 3514 if (emergency_pool != NULL) { 3515 mtx_lock(&ctl_softc->ctl_lock); 3516 if (ctl_pool_acquire(emergency_pool) == 0) { 3517 io->io_hdr.pool = emergency_pool; 3518 emergency_pool->total_ctl_io++; 3519 /* 3520 * Need to bump this, otherwise 3521 * total_allocated and total_freed won't 3522 * match when we no longer have anything 3523 * outstanding. 3524 */ 3525 emergency_pool->total_allocated++; 3526 } 3527 mtx_unlock(&ctl_softc->ctl_lock); 3528 } else 3529 io->io_hdr.pool = NULL; 3530 } 3531 3532 return (io); 3533 } 3534 3535 static void 3536 ctl_free_io_internal(union ctl_io *io, int have_lock) 3537 { 3538 if (io == NULL) 3539 return; 3540 3541 /* 3542 * If this ctl_io has a pool, return it to that pool. 3543 */ 3544 if (io->io_hdr.pool != NULL) { 3545 struct ctl_io_pool *pool; 3546 #if 0 3547 struct ctl_softc *ctl_softc; 3548 union ctl_io *tmp_io; 3549 unsigned long xflags; 3550 int i; 3551 3552 ctl_softc = control_softc; 3553 #endif 3554 3555 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3556 3557 if (have_lock == 0) 3558 mtx_lock(&pool->ctl_softc->ctl_lock); 3559 #if 0 3560 save_flags(xflags); 3561 3562 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3563 &ctl_softc->task_queue); tmp_io != NULL; i++, 3564 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3565 links)) { 3566 if (tmp_io == io) { 3567 printf("%s: %p is still on the task queue!\n", 3568 __func__, tmp_io); 3569 printf("%s: (%d): type %d " 3570 "msg %d cdb %x iptl: " 3571 "%d:%d:%d:%d tag 0x%04x " 3572 "flg %#lx\n", 3573 __func__, i, 3574 tmp_io->io_hdr.io_type, 3575 tmp_io->io_hdr.msg_type, 3576 tmp_io->scsiio.cdb[0], 3577 tmp_io->io_hdr.nexus.initid.id, 3578 tmp_io->io_hdr.nexus.targ_port, 3579 tmp_io->io_hdr.nexus.targ_target.id, 3580 tmp_io->io_hdr.nexus.targ_lun, 3581 (tmp_io->io_hdr.io_type == 3582 CTL_IO_TASK) ? 3583 tmp_io->taskio.tag_num : 3584 tmp_io->scsiio.tag_num, 3585 xflags); 3586 panic("I/O still on the task queue!"); 3587 } 3588 } 3589 #endif 3590 io->io_hdr.io_type = 0xff; 3591 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3592 pool->total_freed++; 3593 pool->free_ctl_io++; 3594 ctl_pool_release(pool); 3595 if (have_lock == 0) 3596 mtx_unlock(&pool->ctl_softc->ctl_lock); 3597 } else { 3598 /* 3599 * Otherwise, just free it. We probably malloced it and 3600 * the emergency pool wasn't available. 3601 */ 3602 free(io, M_CTL); 3603 } 3604 3605 } 3606 3607 void 3608 ctl_free_io(union ctl_io *io) 3609 { 3610 ctl_free_io_internal(io, /*have_lock*/ 0); 3611 } 3612 3613 void 3614 ctl_zero_io(union ctl_io *io) 3615 { 3616 void *pool_ref; 3617 3618 if (io == NULL) 3619 return; 3620 3621 /* 3622 * May need to preserve linked list pointers at some point too. 3623 */ 3624 pool_ref = io->io_hdr.pool; 3625 3626 memset(io, 0, sizeof(*io)); 3627 3628 io->io_hdr.pool = pool_ref; 3629 } 3630 3631 /* 3632 * This routine is currently used for internal copies of ctl_ios that need 3633 * to persist for some reason after we've already returned status to the 3634 * FETD. (Thus the flag set.) 3635 * 3636 * XXX XXX 3637 * Note that this makes a blind copy of all fields in the ctl_io, except 3638 * for the pool reference. This includes any memory that has been 3639 * allocated! That memory will no longer be valid after done has been 3640 * called, so this would be VERY DANGEROUS for command that actually does 3641 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3642 * start and stop commands, which don't transfer any data, so this is not a 3643 * problem. If it is used for anything else, the caller would also need to 3644 * allocate data buffer space and this routine would need to be modified to 3645 * copy the data buffer(s) as well. 3646 */ 3647 void 3648 ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3649 { 3650 void *pool_ref; 3651 3652 if ((src == NULL) 3653 || (dest == NULL)) 3654 return; 3655 3656 /* 3657 * May need to preserve linked list pointers at some point too. 3658 */ 3659 pool_ref = dest->io_hdr.pool; 3660 3661 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3662 3663 dest->io_hdr.pool = pool_ref; 3664 /* 3665 * We need to know that this is an internal copy, and doesn't need 3666 * to get passed back to the FETD that allocated it. 3667 */ 3668 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3669 } 3670 3671 #ifdef NEEDTOPORT 3672 static void 3673 ctl_update_power_subpage(struct copan_power_subpage *page) 3674 { 3675 int num_luns, num_partitions, config_type; 3676 struct ctl_softc *softc; 3677 cs_BOOL_t aor_present, shelf_50pct_power; 3678 cs_raidset_personality_t rs_type; 3679 int max_active_luns; 3680 3681 softc = control_softc; 3682 3683 /* subtract out the processor LUN */ 3684 num_luns = softc->num_luns - 1; 3685 /* 3686 * Default to 7 LUNs active, which was the only number we allowed 3687 * in the past. 3688 */ 3689 max_active_luns = 7; 3690 3691 num_partitions = config_GetRsPartitionInfo(); 3692 config_type = config_GetConfigType(); 3693 shelf_50pct_power = config_GetShelfPowerMode(); 3694 aor_present = config_IsAorRsPresent(); 3695 3696 rs_type = ddb_GetRsRaidType(1); 3697 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3698 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3699 EPRINT(0, "Unsupported RS type %d!", rs_type); 3700 } 3701 3702 3703 page->total_luns = num_luns; 3704 3705 switch (config_type) { 3706 case 40: 3707 /* 3708 * In a 40 drive configuration, it doesn't matter what DC 3709 * cards we have, whether we have AOR enabled or not, 3710 * partitioning or not, or what type of RAIDset we have. 3711 * In that scenario, we can power up every LUN we present 3712 * to the user. 3713 */ 3714 max_active_luns = num_luns; 3715 3716 break; 3717 case 64: 3718 if (shelf_50pct_power == CS_FALSE) { 3719 /* 25% power */ 3720 if (aor_present == CS_TRUE) { 3721 if (rs_type == 3722 CS_RAIDSET_PERSONALITY_RAID5) { 3723 max_active_luns = 7; 3724 } else if (rs_type == 3725 CS_RAIDSET_PERSONALITY_RAID1){ 3726 max_active_luns = 14; 3727 } else { 3728 /* XXX KDM now what?? */ 3729 } 3730 } else { 3731 if (rs_type == 3732 CS_RAIDSET_PERSONALITY_RAID5) { 3733 max_active_luns = 8; 3734 } else if (rs_type == 3735 CS_RAIDSET_PERSONALITY_RAID1){ 3736 max_active_luns = 16; 3737 } else { 3738 /* XXX KDM now what?? */ 3739 } 3740 } 3741 } else { 3742 /* 50% power */ 3743 /* 3744 * With 50% power in a 64 drive configuration, we 3745 * can power all LUNs we present. 3746 */ 3747 max_active_luns = num_luns; 3748 } 3749 break; 3750 case 112: 3751 if (shelf_50pct_power == CS_FALSE) { 3752 /* 25% power */ 3753 if (aor_present == CS_TRUE) { 3754 if (rs_type == 3755 CS_RAIDSET_PERSONALITY_RAID5) { 3756 max_active_luns = 7; 3757 } else if (rs_type == 3758 CS_RAIDSET_PERSONALITY_RAID1){ 3759 max_active_luns = 14; 3760 } else { 3761 /* XXX KDM now what?? */ 3762 } 3763 } else { 3764 if (rs_type == 3765 CS_RAIDSET_PERSONALITY_RAID5) { 3766 max_active_luns = 8; 3767 } else if (rs_type == 3768 CS_RAIDSET_PERSONALITY_RAID1){ 3769 max_active_luns = 16; 3770 } else { 3771 /* XXX KDM now what?? */ 3772 } 3773 } 3774 } else { 3775 /* 50% power */ 3776 if (aor_present == CS_TRUE) { 3777 if (rs_type == 3778 CS_RAIDSET_PERSONALITY_RAID5) { 3779 max_active_luns = 14; 3780 } else if (rs_type == 3781 CS_RAIDSET_PERSONALITY_RAID1){ 3782 /* 3783 * We're assuming here that disk 3784 * caching is enabled, and so we're 3785 * able to power up half of each 3786 * LUN, and cache all writes. 3787 */ 3788 max_active_luns = num_luns; 3789 } else { 3790 /* XXX KDM now what?? */ 3791 } 3792 } else { 3793 if (rs_type == 3794 CS_RAIDSET_PERSONALITY_RAID5) { 3795 max_active_luns = 15; 3796 } else if (rs_type == 3797 CS_RAIDSET_PERSONALITY_RAID1){ 3798 max_active_luns = 30; 3799 } else { 3800 /* XXX KDM now what?? */ 3801 } 3802 } 3803 } 3804 break; 3805 default: 3806 /* 3807 * In this case, we have an unknown configuration, so we 3808 * just use the default from above. 3809 */ 3810 break; 3811 } 3812 3813 page->max_active_luns = max_active_luns; 3814 #if 0 3815 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3816 page->total_luns, page->max_active_luns); 3817 #endif 3818 } 3819 #endif /* NEEDTOPORT */ 3820 3821 /* 3822 * This routine could be used in the future to load default and/or saved 3823 * mode page parameters for a particuar lun. 3824 */ 3825 static int 3826 ctl_init_page_index(struct ctl_lun *lun) 3827 { 3828 int i; 3829 struct ctl_page_index *page_index; 3830 struct ctl_softc *softc; 3831 3832 memcpy(&lun->mode_pages.index, page_index_template, 3833 sizeof(page_index_template)); 3834 3835 softc = lun->ctl_softc; 3836 3837 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3838 3839 page_index = &lun->mode_pages.index[i]; 3840 /* 3841 * If this is a disk-only mode page, there's no point in 3842 * setting it up. For some pages, we have to have some 3843 * basic information about the disk in order to calculate the 3844 * mode page data. 3845 */ 3846 if ((lun->be_lun->lun_type != T_DIRECT) 3847 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3848 continue; 3849 3850 switch (page_index->page_code & SMPH_PC_MASK) { 3851 case SMS_FORMAT_DEVICE_PAGE: { 3852 struct scsi_format_page *format_page; 3853 3854 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3855 panic("subpage is incorrect!"); 3856 3857 /* 3858 * Sectors per track are set above. Bytes per 3859 * sector need to be set here on a per-LUN basis. 3860 */ 3861 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3862 &format_page_default, 3863 sizeof(format_page_default)); 3864 memcpy(&lun->mode_pages.format_page[ 3865 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3866 sizeof(format_page_changeable)); 3867 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3868 &format_page_default, 3869 sizeof(format_page_default)); 3870 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3871 &format_page_default, 3872 sizeof(format_page_default)); 3873 3874 format_page = &lun->mode_pages.format_page[ 3875 CTL_PAGE_CURRENT]; 3876 scsi_ulto2b(lun->be_lun->blocksize, 3877 format_page->bytes_per_sector); 3878 3879 format_page = &lun->mode_pages.format_page[ 3880 CTL_PAGE_DEFAULT]; 3881 scsi_ulto2b(lun->be_lun->blocksize, 3882 format_page->bytes_per_sector); 3883 3884 format_page = &lun->mode_pages.format_page[ 3885 CTL_PAGE_SAVED]; 3886 scsi_ulto2b(lun->be_lun->blocksize, 3887 format_page->bytes_per_sector); 3888 3889 page_index->page_data = 3890 (uint8_t *)lun->mode_pages.format_page; 3891 break; 3892 } 3893 case SMS_RIGID_DISK_PAGE: { 3894 struct scsi_rigid_disk_page *rigid_disk_page; 3895 uint32_t sectors_per_cylinder; 3896 uint64_t cylinders; 3897 #ifndef __XSCALE__ 3898 int shift; 3899 #endif /* !__XSCALE__ */ 3900 3901 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3902 panic("invalid subpage value %d", 3903 page_index->subpage); 3904 3905 /* 3906 * Rotation rate and sectors per track are set 3907 * above. We calculate the cylinders here based on 3908 * capacity. Due to the number of heads and 3909 * sectors per track we're using, smaller arrays 3910 * may turn out to have 0 cylinders. Linux and 3911 * FreeBSD don't pay attention to these mode pages 3912 * to figure out capacity, but Solaris does. It 3913 * seems to deal with 0 cylinders just fine, and 3914 * works out a fake geometry based on the capacity. 3915 */ 3916 memcpy(&lun->mode_pages.rigid_disk_page[ 3917 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3918 sizeof(rigid_disk_page_default)); 3919 memcpy(&lun->mode_pages.rigid_disk_page[ 3920 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3921 sizeof(rigid_disk_page_changeable)); 3922 memcpy(&lun->mode_pages.rigid_disk_page[ 3923 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3924 sizeof(rigid_disk_page_default)); 3925 memcpy(&lun->mode_pages.rigid_disk_page[ 3926 CTL_PAGE_SAVED], &rigid_disk_page_default, 3927 sizeof(rigid_disk_page_default)); 3928 3929 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3930 CTL_DEFAULT_HEADS; 3931 3932 /* 3933 * The divide method here will be more accurate, 3934 * probably, but results in floating point being 3935 * used in the kernel on i386 (__udivdi3()). On the 3936 * XScale, though, __udivdi3() is implemented in 3937 * software. 3938 * 3939 * The shift method for cylinder calculation is 3940 * accurate if sectors_per_cylinder is a power of 3941 * 2. Otherwise it might be slightly off -- you 3942 * might have a bit of a truncation problem. 3943 */ 3944 #ifdef __XSCALE__ 3945 cylinders = (lun->be_lun->maxlba + 1) / 3946 sectors_per_cylinder; 3947 #else 3948 for (shift = 31; shift > 0; shift--) { 3949 if (sectors_per_cylinder & (1 << shift)) 3950 break; 3951 } 3952 cylinders = (lun->be_lun->maxlba + 1) >> shift; 3953 #endif 3954 3955 /* 3956 * We've basically got 3 bytes, or 24 bits for the 3957 * cylinder size in the mode page. If we're over, 3958 * just round down to 2^24. 3959 */ 3960 if (cylinders > 0xffffff) 3961 cylinders = 0xffffff; 3962 3963 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3964 CTL_PAGE_CURRENT]; 3965 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3966 3967 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3968 CTL_PAGE_DEFAULT]; 3969 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3970 3971 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3972 CTL_PAGE_SAVED]; 3973 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3974 3975 page_index->page_data = 3976 (uint8_t *)lun->mode_pages.rigid_disk_page; 3977 break; 3978 } 3979 case SMS_CACHING_PAGE: { 3980 3981 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3982 panic("invalid subpage value %d", 3983 page_index->subpage); 3984 /* 3985 * Defaults should be okay here, no calculations 3986 * needed. 3987 */ 3988 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 3989 &caching_page_default, 3990 sizeof(caching_page_default)); 3991 memcpy(&lun->mode_pages.caching_page[ 3992 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 3993 sizeof(caching_page_changeable)); 3994 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 3995 &caching_page_default, 3996 sizeof(caching_page_default)); 3997 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 3998 &caching_page_default, 3999 sizeof(caching_page_default)); 4000 page_index->page_data = 4001 (uint8_t *)lun->mode_pages.caching_page; 4002 break; 4003 } 4004 case SMS_CONTROL_MODE_PAGE: { 4005 4006 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4007 panic("invalid subpage value %d", 4008 page_index->subpage); 4009 4010 /* 4011 * Defaults should be okay here, no calculations 4012 * needed. 4013 */ 4014 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4015 &control_page_default, 4016 sizeof(control_page_default)); 4017 memcpy(&lun->mode_pages.control_page[ 4018 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4019 sizeof(control_page_changeable)); 4020 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4021 &control_page_default, 4022 sizeof(control_page_default)); 4023 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4024 &control_page_default, 4025 sizeof(control_page_default)); 4026 page_index->page_data = 4027 (uint8_t *)lun->mode_pages.control_page; 4028 break; 4029 4030 } 4031 case SMS_VENDOR_SPECIFIC_PAGE:{ 4032 switch (page_index->subpage) { 4033 case PWR_SUBPAGE_CODE: { 4034 struct copan_power_subpage *current_page, 4035 *saved_page; 4036 4037 memcpy(&lun->mode_pages.power_subpage[ 4038 CTL_PAGE_CURRENT], 4039 &power_page_default, 4040 sizeof(power_page_default)); 4041 memcpy(&lun->mode_pages.power_subpage[ 4042 CTL_PAGE_CHANGEABLE], 4043 &power_page_changeable, 4044 sizeof(power_page_changeable)); 4045 memcpy(&lun->mode_pages.power_subpage[ 4046 CTL_PAGE_DEFAULT], 4047 &power_page_default, 4048 sizeof(power_page_default)); 4049 memcpy(&lun->mode_pages.power_subpage[ 4050 CTL_PAGE_SAVED], 4051 &power_page_default, 4052 sizeof(power_page_default)); 4053 page_index->page_data = 4054 (uint8_t *)lun->mode_pages.power_subpage; 4055 4056 current_page = (struct copan_power_subpage *) 4057 (page_index->page_data + 4058 (page_index->page_len * 4059 CTL_PAGE_CURRENT)); 4060 saved_page = (struct copan_power_subpage *) 4061 (page_index->page_data + 4062 (page_index->page_len * 4063 CTL_PAGE_SAVED)); 4064 break; 4065 } 4066 case APS_SUBPAGE_CODE: { 4067 struct copan_aps_subpage *current_page, 4068 *saved_page; 4069 4070 // This gets set multiple times but 4071 // it should always be the same. It's 4072 // only done during init so who cares. 4073 index_to_aps_page = i; 4074 4075 memcpy(&lun->mode_pages.aps_subpage[ 4076 CTL_PAGE_CURRENT], 4077 &aps_page_default, 4078 sizeof(aps_page_default)); 4079 memcpy(&lun->mode_pages.aps_subpage[ 4080 CTL_PAGE_CHANGEABLE], 4081 &aps_page_changeable, 4082 sizeof(aps_page_changeable)); 4083 memcpy(&lun->mode_pages.aps_subpage[ 4084 CTL_PAGE_DEFAULT], 4085 &aps_page_default, 4086 sizeof(aps_page_default)); 4087 memcpy(&lun->mode_pages.aps_subpage[ 4088 CTL_PAGE_SAVED], 4089 &aps_page_default, 4090 sizeof(aps_page_default)); 4091 page_index->page_data = 4092 (uint8_t *)lun->mode_pages.aps_subpage; 4093 4094 current_page = (struct copan_aps_subpage *) 4095 (page_index->page_data + 4096 (page_index->page_len * 4097 CTL_PAGE_CURRENT)); 4098 saved_page = (struct copan_aps_subpage *) 4099 (page_index->page_data + 4100 (page_index->page_len * 4101 CTL_PAGE_SAVED)); 4102 break; 4103 } 4104 case DBGCNF_SUBPAGE_CODE: { 4105 struct copan_debugconf_subpage *current_page, 4106 *saved_page; 4107 4108 memcpy(&lun->mode_pages.debugconf_subpage[ 4109 CTL_PAGE_CURRENT], 4110 &debugconf_page_default, 4111 sizeof(debugconf_page_default)); 4112 memcpy(&lun->mode_pages.debugconf_subpage[ 4113 CTL_PAGE_CHANGEABLE], 4114 &debugconf_page_changeable, 4115 sizeof(debugconf_page_changeable)); 4116 memcpy(&lun->mode_pages.debugconf_subpage[ 4117 CTL_PAGE_DEFAULT], 4118 &debugconf_page_default, 4119 sizeof(debugconf_page_default)); 4120 memcpy(&lun->mode_pages.debugconf_subpage[ 4121 CTL_PAGE_SAVED], 4122 &debugconf_page_default, 4123 sizeof(debugconf_page_default)); 4124 page_index->page_data = 4125 (uint8_t *)lun->mode_pages.debugconf_subpage; 4126 4127 current_page = (struct copan_debugconf_subpage *) 4128 (page_index->page_data + 4129 (page_index->page_len * 4130 CTL_PAGE_CURRENT)); 4131 saved_page = (struct copan_debugconf_subpage *) 4132 (page_index->page_data + 4133 (page_index->page_len * 4134 CTL_PAGE_SAVED)); 4135 break; 4136 } 4137 default: 4138 panic("invalid subpage value %d", 4139 page_index->subpage); 4140 break; 4141 } 4142 break; 4143 } 4144 default: 4145 panic("invalid page value %d", 4146 page_index->page_code & SMPH_PC_MASK); 4147 break; 4148 } 4149 } 4150 4151 return (CTL_RETVAL_COMPLETE); 4152 } 4153 4154 /* 4155 * LUN allocation. 4156 * 4157 * Requirements: 4158 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4159 * wants us to allocate the LUN and he can block. 4160 * - ctl_softc is always set 4161 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4162 * 4163 * Returns 0 for success, non-zero (errno) for failure. 4164 */ 4165 static int 4166 ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4167 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4168 { 4169 struct ctl_lun *nlun, *lun; 4170 struct ctl_frontend *fe; 4171 int lun_number, i; 4172 4173 if (be_lun == NULL) 4174 return (EINVAL); 4175 4176 /* 4177 * We currently only support Direct Access or Processor LUN types. 4178 */ 4179 switch (be_lun->lun_type) { 4180 case T_DIRECT: 4181 break; 4182 case T_PROCESSOR: 4183 break; 4184 case T_SEQUENTIAL: 4185 case T_CHANGER: 4186 default: 4187 be_lun->lun_config_status(be_lun->be_lun, 4188 CTL_LUN_CONFIG_FAILURE); 4189 break; 4190 } 4191 if (ctl_lun == NULL) { 4192 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4193 if (lun == NULL) { 4194 be_lun->lun_config_status(lun->be_lun->be_lun, 4195 CTL_LUN_CONFIG_FAILURE); 4196 return (-ENOMEM); 4197 } 4198 lun->flags = CTL_LUN_MALLOCED; 4199 } else 4200 lun = ctl_lun; 4201 4202 memset(lun, 0, sizeof(*lun)); 4203 4204 mtx_lock(&ctl_softc->ctl_lock); 4205 /* 4206 * See if the caller requested a particular LUN number. If so, see 4207 * if it is available. Otherwise, allocate the first available LUN. 4208 */ 4209 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4210 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4211 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4212 mtx_unlock(&ctl_softc->ctl_lock); 4213 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4214 printf("ctl: requested LUN ID %d is higher " 4215 "than CTL_MAX_LUNS - 1 (%d)\n", 4216 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4217 } else { 4218 /* 4219 * XXX KDM return an error, or just assign 4220 * another LUN ID in this case?? 4221 */ 4222 printf("ctl: requested LUN ID %d is already " 4223 "in use\n", be_lun->req_lun_id); 4224 } 4225 if (lun->flags & CTL_LUN_MALLOCED) 4226 free(lun, M_CTL); 4227 be_lun->lun_config_status(be_lun->be_lun, 4228 CTL_LUN_CONFIG_FAILURE); 4229 return (ENOSPC); 4230 } 4231 lun_number = be_lun->req_lun_id; 4232 } else { 4233 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4234 if (lun_number == -1) { 4235 mtx_unlock(&ctl_softc->ctl_lock); 4236 printf("ctl: can't allocate LUN on target %ju, out of " 4237 "LUNs\n", (uintmax_t)target_id.id); 4238 if (lun->flags & CTL_LUN_MALLOCED) 4239 free(lun, M_CTL); 4240 be_lun->lun_config_status(be_lun->be_lun, 4241 CTL_LUN_CONFIG_FAILURE); 4242 return (ENOSPC); 4243 } 4244 } 4245 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4246 4247 lun->target = target_id; 4248 lun->lun = lun_number; 4249 lun->be_lun = be_lun; 4250 /* 4251 * The processor LUN is always enabled. Disk LUNs come on line 4252 * disabled, and must be enabled by the backend. 4253 */ 4254 lun->flags = CTL_LUN_DISABLED; 4255 lun->backend = be_lun->be; 4256 be_lun->ctl_lun = lun; 4257 be_lun->lun_id = lun_number; 4258 atomic_add_int(&be_lun->be->num_luns, 1); 4259 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4260 lun->flags |= CTL_LUN_STOPPED; 4261 4262 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4263 lun->flags |= CTL_LUN_INOPERABLE; 4264 4265 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4266 lun->flags |= CTL_LUN_PRIMARY_SC; 4267 4268 lun->ctl_softc = ctl_softc; 4269 TAILQ_INIT(&lun->ooa_queue); 4270 TAILQ_INIT(&lun->blocked_queue); 4271 STAILQ_INIT(&lun->error_list); 4272 4273 /* 4274 * Initialize the mode page index. 4275 */ 4276 ctl_init_page_index(lun); 4277 4278 /* 4279 * Set the poweron UA for all initiators on this LUN only. 4280 */ 4281 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4282 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4283 4284 /* 4285 * Now, before we insert this lun on the lun list, set the lun 4286 * inventory changed UA for all other luns. 4287 */ 4288 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4289 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4290 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4291 } 4292 } 4293 4294 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4295 4296 ctl_softc->ctl_luns[lun_number] = lun; 4297 4298 ctl_softc->num_luns++; 4299 4300 /* Setup statistics gathering */ 4301 lun->stats.device_type = be_lun->lun_type; 4302 lun->stats.lun_number = lun_number; 4303 if (lun->stats.device_type == T_DIRECT) 4304 lun->stats.blocksize = be_lun->blocksize; 4305 else 4306 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4307 for (i = 0;i < CTL_MAX_PORTS;i++) 4308 lun->stats.ports[i].targ_port = i; 4309 4310 mtx_unlock(&ctl_softc->ctl_lock); 4311 4312 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4313 4314 /* 4315 * Run through each registered FETD and bring it online if it isn't 4316 * already. Enable the target ID if it hasn't been enabled, and 4317 * enable this particular LUN. 4318 */ 4319 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4320 int retval; 4321 4322 /* 4323 * XXX KDM this only works for ONE TARGET ID. We'll need 4324 * to do things differently if we go to a multiple target 4325 * ID scheme. 4326 */ 4327 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4328 4329 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4330 if (retval != 0) { 4331 printf("ctl_alloc_lun: FETD %s port %d " 4332 "returned error %d for targ_enable on " 4333 "target %ju\n", fe->port_name, 4334 fe->targ_port, retval, 4335 (uintmax_t)target_id.id); 4336 } else 4337 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4338 } 4339 4340 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4341 if (retval != 0) { 4342 printf("ctl_alloc_lun: FETD %s port %d returned error " 4343 "%d for lun_enable on target %ju lun %d\n", 4344 fe->port_name, fe->targ_port, retval, 4345 (uintmax_t)target_id.id, lun_number); 4346 } else 4347 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4348 } 4349 return (0); 4350 } 4351 4352 /* 4353 * Delete a LUN. 4354 * Assumptions: 4355 * - caller holds ctl_softc->ctl_lock. 4356 * - LUN has already been marked invalid and any pending I/O has been taken 4357 * care of. 4358 */ 4359 static int 4360 ctl_free_lun(struct ctl_lun *lun) 4361 { 4362 struct ctl_softc *softc; 4363 #if 0 4364 struct ctl_frontend *fe; 4365 #endif 4366 struct ctl_lun *nlun; 4367 union ctl_io *io, *next_io; 4368 int i; 4369 4370 softc = lun->ctl_softc; 4371 4372 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4373 4374 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4375 4376 softc->ctl_luns[lun->lun] = NULL; 4377 4378 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4379 printf("ctl_free_lun: aieee!! freeing a LUN with " 4380 "outstanding I/O!!\n"); 4381 } 4382 4383 /* 4384 * If we have anything pending on the RtR queue, remove it. 4385 */ 4386 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4387 io = next_io) { 4388 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4389 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4390 && (io->io_hdr.nexus.targ_lun == lun->lun)) 4391 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4392 ctl_io_hdr, links); 4393 } 4394 4395 /* 4396 * Then remove everything from the blocked queue. 4397 */ 4398 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4399 io = next_io) { 4400 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4401 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4402 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4403 } 4404 4405 /* 4406 * Now clear out the OOA queue, and free all the I/O. 4407 * XXX KDM should we notify the FETD here? We probably need to 4408 * quiesce the LUN before deleting it. 4409 */ 4410 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4411 io = next_io) { 4412 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4413 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4414 ctl_free_io_internal(io, /*have_lock*/ 1); 4415 } 4416 4417 softc->num_luns--; 4418 4419 /* 4420 * XXX KDM this scheme only works for a single target/multiple LUN 4421 * setup. It needs to be revamped for a multiple target scheme. 4422 * 4423 * XXX KDM this results in fe->lun_disable() getting called twice, 4424 * once when ctl_disable_lun() is called, and a second time here. 4425 * We really need to re-think the LUN disable semantics. There 4426 * should probably be several steps/levels to LUN removal: 4427 * - disable 4428 * - invalidate 4429 * - free 4430 * 4431 * Right now we only have a disable method when communicating to 4432 * the front end ports, at least for individual LUNs. 4433 */ 4434 #if 0 4435 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4436 int retval; 4437 4438 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4439 lun->lun); 4440 if (retval != 0) { 4441 printf("ctl_free_lun: FETD %s port %d returned error " 4442 "%d for lun_disable on target %ju lun %jd\n", 4443 fe->port_name, fe->targ_port, retval, 4444 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4445 } 4446 4447 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4448 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4449 4450 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4451 if (retval != 0) { 4452 printf("ctl_free_lun: FETD %s port %d " 4453 "returned error %d for targ_disable on " 4454 "target %ju\n", fe->port_name, 4455 fe->targ_port, retval, 4456 (uintmax_t)lun->target.id); 4457 } else 4458 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4459 4460 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4461 continue; 4462 4463 #if 0 4464 fe->port_offline(fe->onoff_arg); 4465 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4466 #endif 4467 } 4468 } 4469 #endif 4470 4471 /* 4472 * Tell the backend to free resources, if this LUN has a backend. 4473 */ 4474 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4475 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4476 4477 if (lun->flags & CTL_LUN_MALLOCED) 4478 free(lun, M_CTL); 4479 4480 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4481 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4482 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4483 } 4484 } 4485 4486 return (0); 4487 } 4488 4489 static void 4490 ctl_create_lun(struct ctl_be_lun *be_lun) 4491 { 4492 struct ctl_softc *ctl_softc; 4493 4494 ctl_softc = control_softc; 4495 4496 /* 4497 * ctl_alloc_lun() should handle all potential failure cases. 4498 */ 4499 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4500 } 4501 4502 int 4503 ctl_add_lun(struct ctl_be_lun *be_lun) 4504 { 4505 struct ctl_softc *ctl_softc; 4506 4507 ctl_softc = control_softc; 4508 4509 mtx_lock(&ctl_softc->ctl_lock); 4510 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4511 mtx_unlock(&ctl_softc->ctl_lock); 4512 4513 ctl_wakeup_thread(); 4514 4515 return (0); 4516 } 4517 4518 int 4519 ctl_enable_lun(struct ctl_be_lun *be_lun) 4520 { 4521 struct ctl_softc *ctl_softc; 4522 struct ctl_frontend *fe, *nfe; 4523 struct ctl_lun *lun; 4524 int retval; 4525 4526 ctl_softc = control_softc; 4527 4528 lun = (struct ctl_lun *)be_lun->ctl_lun; 4529 4530 mtx_lock(&ctl_softc->ctl_lock); 4531 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4532 /* 4533 * eh? Why did we get called if the LUN is already 4534 * enabled? 4535 */ 4536 mtx_unlock(&ctl_softc->ctl_lock); 4537 return (0); 4538 } 4539 lun->flags &= ~CTL_LUN_DISABLED; 4540 4541 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4542 nfe = STAILQ_NEXT(fe, links); 4543 4544 /* 4545 * Drop the lock while we call the FETD's enable routine. 4546 * This can lead to a callback into CTL (at least in the 4547 * case of the internal initiator frontend. 4548 */ 4549 mtx_unlock(&ctl_softc->ctl_lock); 4550 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4551 mtx_lock(&ctl_softc->ctl_lock); 4552 if (retval != 0) { 4553 printf("%s: FETD %s port %d returned error " 4554 "%d for lun_enable on target %ju lun %jd\n", 4555 __func__, fe->port_name, fe->targ_port, retval, 4556 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4557 } 4558 #if 0 4559 else { 4560 /* NOTE: TODO: why does lun enable affect port status? */ 4561 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4562 } 4563 #endif 4564 } 4565 4566 mtx_unlock(&ctl_softc->ctl_lock); 4567 4568 return (0); 4569 } 4570 4571 int 4572 ctl_disable_lun(struct ctl_be_lun *be_lun) 4573 { 4574 struct ctl_softc *ctl_softc; 4575 struct ctl_frontend *fe; 4576 struct ctl_lun *lun; 4577 int retval; 4578 4579 ctl_softc = control_softc; 4580 4581 lun = (struct ctl_lun *)be_lun->ctl_lun; 4582 4583 mtx_lock(&ctl_softc->ctl_lock); 4584 4585 if (lun->flags & CTL_LUN_DISABLED) { 4586 mtx_unlock(&ctl_softc->ctl_lock); 4587 return (0); 4588 } 4589 lun->flags |= CTL_LUN_DISABLED; 4590 4591 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4592 mtx_unlock(&ctl_softc->ctl_lock); 4593 /* 4594 * Drop the lock before we call the frontend's disable 4595 * routine, to avoid lock order reversals. 4596 * 4597 * XXX KDM what happens if the frontend list changes while 4598 * we're traversing it? It's unlikely, but should be handled. 4599 */ 4600 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4601 lun->lun); 4602 mtx_lock(&ctl_softc->ctl_lock); 4603 if (retval != 0) { 4604 printf("ctl_alloc_lun: FETD %s port %d returned error " 4605 "%d for lun_disable on target %ju lun %jd\n", 4606 fe->port_name, fe->targ_port, retval, 4607 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4608 } 4609 } 4610 4611 mtx_unlock(&ctl_softc->ctl_lock); 4612 4613 return (0); 4614 } 4615 4616 int 4617 ctl_start_lun(struct ctl_be_lun *be_lun) 4618 { 4619 struct ctl_softc *ctl_softc; 4620 struct ctl_lun *lun; 4621 4622 ctl_softc = control_softc; 4623 4624 lun = (struct ctl_lun *)be_lun->ctl_lun; 4625 4626 mtx_lock(&ctl_softc->ctl_lock); 4627 lun->flags &= ~CTL_LUN_STOPPED; 4628 mtx_unlock(&ctl_softc->ctl_lock); 4629 4630 return (0); 4631 } 4632 4633 int 4634 ctl_stop_lun(struct ctl_be_lun *be_lun) 4635 { 4636 struct ctl_softc *ctl_softc; 4637 struct ctl_lun *lun; 4638 4639 ctl_softc = control_softc; 4640 4641 lun = (struct ctl_lun *)be_lun->ctl_lun; 4642 4643 mtx_lock(&ctl_softc->ctl_lock); 4644 lun->flags |= CTL_LUN_STOPPED; 4645 mtx_unlock(&ctl_softc->ctl_lock); 4646 4647 return (0); 4648 } 4649 4650 int 4651 ctl_lun_offline(struct ctl_be_lun *be_lun) 4652 { 4653 struct ctl_softc *ctl_softc; 4654 struct ctl_lun *lun; 4655 4656 ctl_softc = control_softc; 4657 4658 lun = (struct ctl_lun *)be_lun->ctl_lun; 4659 4660 mtx_lock(&ctl_softc->ctl_lock); 4661 lun->flags |= CTL_LUN_OFFLINE; 4662 mtx_unlock(&ctl_softc->ctl_lock); 4663 4664 return (0); 4665 } 4666 4667 int 4668 ctl_lun_online(struct ctl_be_lun *be_lun) 4669 { 4670 struct ctl_softc *ctl_softc; 4671 struct ctl_lun *lun; 4672 4673 ctl_softc = control_softc; 4674 4675 lun = (struct ctl_lun *)be_lun->ctl_lun; 4676 4677 mtx_lock(&ctl_softc->ctl_lock); 4678 lun->flags &= ~CTL_LUN_OFFLINE; 4679 mtx_unlock(&ctl_softc->ctl_lock); 4680 4681 return (0); 4682 } 4683 4684 int 4685 ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4686 { 4687 struct ctl_softc *ctl_softc; 4688 struct ctl_lun *lun; 4689 4690 ctl_softc = control_softc; 4691 4692 lun = (struct ctl_lun *)be_lun->ctl_lun; 4693 4694 mtx_lock(&ctl_softc->ctl_lock); 4695 4696 /* 4697 * The LUN needs to be disabled before it can be marked invalid. 4698 */ 4699 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4700 mtx_unlock(&ctl_softc->ctl_lock); 4701 return (-1); 4702 } 4703 /* 4704 * Mark the LUN invalid. 4705 */ 4706 lun->flags |= CTL_LUN_INVALID; 4707 4708 /* 4709 * If there is nothing in the OOA queue, go ahead and free the LUN. 4710 * If we have something in the OOA queue, we'll free it when the 4711 * last I/O completes. 4712 */ 4713 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4714 ctl_free_lun(lun); 4715 mtx_unlock(&ctl_softc->ctl_lock); 4716 4717 return (0); 4718 } 4719 4720 int 4721 ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4722 { 4723 struct ctl_softc *ctl_softc; 4724 struct ctl_lun *lun; 4725 4726 ctl_softc = control_softc; 4727 lun = (struct ctl_lun *)be_lun->ctl_lun; 4728 4729 mtx_lock(&ctl_softc->ctl_lock); 4730 lun->flags |= CTL_LUN_INOPERABLE; 4731 mtx_unlock(&ctl_softc->ctl_lock); 4732 4733 return (0); 4734 } 4735 4736 int 4737 ctl_lun_operable(struct ctl_be_lun *be_lun) 4738 { 4739 struct ctl_softc *ctl_softc; 4740 struct ctl_lun *lun; 4741 4742 ctl_softc = control_softc; 4743 lun = (struct ctl_lun *)be_lun->ctl_lun; 4744 4745 mtx_lock(&ctl_softc->ctl_lock); 4746 lun->flags &= ~CTL_LUN_INOPERABLE; 4747 mtx_unlock(&ctl_softc->ctl_lock); 4748 4749 return (0); 4750 } 4751 4752 int 4753 ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4754 int lock) 4755 { 4756 struct ctl_softc *softc; 4757 struct ctl_lun *lun; 4758 struct copan_aps_subpage *current_sp; 4759 struct ctl_page_index *page_index; 4760 int i; 4761 4762 softc = control_softc; 4763 4764 mtx_lock(&softc->ctl_lock); 4765 4766 lun = (struct ctl_lun *)be_lun->ctl_lun; 4767 4768 page_index = NULL; 4769 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4770 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4771 APS_PAGE_CODE) 4772 continue; 4773 4774 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4775 continue; 4776 page_index = &lun->mode_pages.index[i]; 4777 } 4778 4779 if (page_index == NULL) { 4780 mtx_unlock(&softc->ctl_lock); 4781 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4782 (uintmax_t)lun->lun); 4783 return (1); 4784 } 4785 #if 0 4786 if ((softc->aps_locked_lun != 0) 4787 && (softc->aps_locked_lun != lun->lun)) { 4788 printf("%s: attempt to lock LUN %llu when %llu is already " 4789 "locked\n"); 4790 mtx_unlock(&softc->ctl_lock); 4791 return (1); 4792 } 4793 #endif 4794 4795 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4796 (page_index->page_len * CTL_PAGE_CURRENT)); 4797 4798 if (lock != 0) { 4799 current_sp->lock_active = APS_LOCK_ACTIVE; 4800 softc->aps_locked_lun = lun->lun; 4801 } else { 4802 current_sp->lock_active = 0; 4803 softc->aps_locked_lun = 0; 4804 } 4805 4806 4807 /* 4808 * If we're in HA mode, try to send the lock message to the other 4809 * side. 4810 */ 4811 if (ctl_is_single == 0) { 4812 int isc_retval; 4813 union ctl_ha_msg lock_msg; 4814 4815 lock_msg.hdr.nexus = *nexus; 4816 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4817 if (lock != 0) 4818 lock_msg.aps.lock_flag = 1; 4819 else 4820 lock_msg.aps.lock_flag = 0; 4821 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4822 sizeof(lock_msg), 0); 4823 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4824 printf("%s: APS (lock=%d) error returned from " 4825 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4826 mtx_unlock(&softc->ctl_lock); 4827 return (1); 4828 } 4829 } 4830 4831 mtx_unlock(&softc->ctl_lock); 4832 4833 return (0); 4834 } 4835 4836 void 4837 ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4838 { 4839 struct ctl_lun *lun; 4840 struct ctl_softc *softc; 4841 int i; 4842 4843 softc = control_softc; 4844 4845 mtx_lock(&softc->ctl_lock); 4846 4847 lun = (struct ctl_lun *)be_lun->ctl_lun; 4848 4849 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4850 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4851 4852 mtx_unlock(&softc->ctl_lock); 4853 } 4854 4855 /* 4856 * Backend "memory move is complete" callback for requests that never 4857 * make it down to say RAIDCore's configuration code. 4858 */ 4859 int 4860 ctl_config_move_done(union ctl_io *io) 4861 { 4862 int retval; 4863 4864 retval = CTL_RETVAL_COMPLETE; 4865 4866 4867 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4868 /* 4869 * XXX KDM this shouldn't happen, but what if it does? 4870 */ 4871 if (io->io_hdr.io_type != CTL_IO_SCSI) 4872 panic("I/O type isn't CTL_IO_SCSI!"); 4873 4874 if ((io->io_hdr.port_status == 0) 4875 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4876 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4877 io->io_hdr.status = CTL_SUCCESS; 4878 else if ((io->io_hdr.port_status != 0) 4879 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4880 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4881 /* 4882 * For hardware error sense keys, the sense key 4883 * specific value is defined to be a retry count, 4884 * but we use it to pass back an internal FETD 4885 * error code. XXX KDM Hopefully the FETD is only 4886 * using 16 bits for an error code, since that's 4887 * all the space we have in the sks field. 4888 */ 4889 ctl_set_internal_failure(&io->scsiio, 4890 /*sks_valid*/ 1, 4891 /*retry_count*/ 4892 io->io_hdr.port_status); 4893 free(io->scsiio.kern_data_ptr, M_CTL); 4894 ctl_done(io); 4895 goto bailout; 4896 } 4897 4898 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4899 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4900 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4901 /* 4902 * XXX KDM just assuming a single pointer here, and not a 4903 * S/G list. If we start using S/G lists for config data, 4904 * we'll need to know how to clean them up here as well. 4905 */ 4906 free(io->scsiio.kern_data_ptr, M_CTL); 4907 /* Hopefully the user has already set the status... */ 4908 ctl_done(io); 4909 } else { 4910 /* 4911 * XXX KDM now we need to continue data movement. Some 4912 * options: 4913 * - call ctl_scsiio() again? We don't do this for data 4914 * writes, because for those at least we know ahead of 4915 * time where the write will go and how long it is. For 4916 * config writes, though, that information is largely 4917 * contained within the write itself, thus we need to 4918 * parse out the data again. 4919 * 4920 * - Call some other function once the data is in? 4921 */ 4922 4923 /* 4924 * XXX KDM call ctl_scsiio() again for now, and check flag 4925 * bits to see whether we're allocated or not. 4926 */ 4927 retval = ctl_scsiio(&io->scsiio); 4928 } 4929 bailout: 4930 return (retval); 4931 } 4932 4933 /* 4934 * This gets called by a backend driver when it is done with a 4935 * configuration write. 4936 */ 4937 void 4938 ctl_config_write_done(union ctl_io *io) 4939 { 4940 /* 4941 * If the IO_CONT flag is set, we need to call the supplied 4942 * function to continue processing the I/O, instead of completing 4943 * the I/O just yet. 4944 * 4945 * If there is an error, though, we don't want to keep processing. 4946 * Instead, just send status back to the initiator. 4947 */ 4948 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 4949 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 4950 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 4951 io->scsiio.io_cont(io); 4952 return; 4953 } 4954 /* 4955 * Since a configuration write can be done for commands that actually 4956 * have data allocated, like write buffer, and commands that have 4957 * no data, like start/stop unit, we need to check here. 4958 */ 4959 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 4960 free(io->scsiio.kern_data_ptr, M_CTL); 4961 ctl_done(io); 4962 } 4963 4964 /* 4965 * SCSI release command. 4966 */ 4967 int 4968 ctl_scsi_release(struct ctl_scsiio *ctsio) 4969 { 4970 int length, longid, thirdparty_id, resv_id; 4971 struct ctl_softc *ctl_softc; 4972 struct ctl_lun *lun; 4973 4974 length = 0; 4975 resv_id = 0; 4976 4977 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 4978 4979 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 4980 ctl_softc = control_softc; 4981 4982 switch (ctsio->cdb[0]) { 4983 case RELEASE: { 4984 struct scsi_release *cdb; 4985 4986 cdb = (struct scsi_release *)ctsio->cdb; 4987 if ((cdb->byte2 & 0x1f) != 0) { 4988 ctl_set_invalid_field(ctsio, 4989 /*sks_valid*/ 1, 4990 /*command*/ 1, 4991 /*field*/ 1, 4992 /*bit_valid*/ 0, 4993 /*bit*/ 0); 4994 ctl_done((union ctl_io *)ctsio); 4995 return (CTL_RETVAL_COMPLETE); 4996 } 4997 break; 4998 } 4999 case RELEASE_10: { 5000 struct scsi_release_10 *cdb; 5001 5002 cdb = (struct scsi_release_10 *)ctsio->cdb; 5003 5004 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5005 ctl_set_invalid_field(ctsio, 5006 /*sks_valid*/ 1, 5007 /*command*/ 1, 5008 /*field*/ 1, 5009 /*bit_valid*/ 1, 5010 /*bit*/ 0); 5011 ctl_done((union ctl_io *)ctsio); 5012 return (CTL_RETVAL_COMPLETE); 5013 5014 } 5015 5016 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5017 ctl_set_invalid_field(ctsio, 5018 /*sks_valid*/ 1, 5019 /*command*/ 1, 5020 /*field*/ 1, 5021 /*bit_valid*/ 1, 5022 /*bit*/ 4); 5023 ctl_done((union ctl_io *)ctsio); 5024 return (CTL_RETVAL_COMPLETE); 5025 } 5026 5027 if (cdb->byte2 & SR10_LONGID) 5028 longid = 1; 5029 else 5030 thirdparty_id = cdb->thirdparty_id; 5031 5032 resv_id = cdb->resv_id; 5033 length = scsi_2btoul(cdb->length); 5034 break; 5035 } 5036 } 5037 5038 5039 /* 5040 * XXX KDM right now, we only support LUN reservation. We don't 5041 * support 3rd party reservations, or extent reservations, which 5042 * might actually need the parameter list. If we've gotten this 5043 * far, we've got a LUN reservation. Anything else got kicked out 5044 * above. So, according to SPC, ignore the length. 5045 */ 5046 length = 0; 5047 5048 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5049 && (length > 0)) { 5050 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5051 if (ctsio->kern_data_ptr == NULL) { 5052 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5053 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5054 ctl_done((union ctl_io *)ctsio); 5055 return (CTL_RETVAL_COMPLETE); 5056 } 5057 ctsio->kern_data_len = length; 5058 ctsio->kern_total_len = length; 5059 ctsio->kern_data_resid = 0; 5060 ctsio->kern_rel_offset = 0; 5061 ctsio->kern_sg_entries = 0; 5062 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5063 ctsio->be_move_done = ctl_config_move_done; 5064 ctl_datamove((union ctl_io *)ctsio); 5065 5066 return (CTL_RETVAL_COMPLETE); 5067 } 5068 5069 if (length > 0) 5070 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5071 5072 mtx_lock(&ctl_softc->ctl_lock); 5073 5074 /* 5075 * According to SPC, it is not an error for an intiator to attempt 5076 * to release a reservation on a LUN that isn't reserved, or that 5077 * is reserved by another initiator. The reservation can only be 5078 * released, though, by the initiator who made it or by one of 5079 * several reset type events. 5080 */ 5081 if (lun->flags & CTL_LUN_RESERVED) { 5082 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5083 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5084 && (ctsio->io_hdr.nexus.targ_target.id == 5085 lun->rsv_nexus.targ_target.id)) { 5086 lun->flags &= ~CTL_LUN_RESERVED; 5087 } 5088 } 5089 5090 ctsio->scsi_status = SCSI_STATUS_OK; 5091 ctsio->io_hdr.status = CTL_SUCCESS; 5092 5093 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5094 free(ctsio->kern_data_ptr, M_CTL); 5095 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5096 } 5097 5098 mtx_unlock(&ctl_softc->ctl_lock); 5099 5100 ctl_done((union ctl_io *)ctsio); 5101 return (CTL_RETVAL_COMPLETE); 5102 } 5103 5104 int 5105 ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5106 { 5107 int extent, thirdparty, longid; 5108 int resv_id, length; 5109 uint64_t thirdparty_id; 5110 struct ctl_softc *ctl_softc; 5111 struct ctl_lun *lun; 5112 5113 extent = 0; 5114 thirdparty = 0; 5115 longid = 0; 5116 resv_id = 0; 5117 length = 0; 5118 thirdparty_id = 0; 5119 5120 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5121 5122 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5123 ctl_softc = control_softc; 5124 5125 switch (ctsio->cdb[0]) { 5126 case RESERVE: { 5127 struct scsi_reserve *cdb; 5128 5129 cdb = (struct scsi_reserve *)ctsio->cdb; 5130 if ((cdb->byte2 & 0x1f) != 0) { 5131 ctl_set_invalid_field(ctsio, 5132 /*sks_valid*/ 1, 5133 /*command*/ 1, 5134 /*field*/ 1, 5135 /*bit_valid*/ 0, 5136 /*bit*/ 0); 5137 ctl_done((union ctl_io *)ctsio); 5138 return (CTL_RETVAL_COMPLETE); 5139 } 5140 resv_id = cdb->resv_id; 5141 length = scsi_2btoul(cdb->length); 5142 break; 5143 } 5144 case RESERVE_10: { 5145 struct scsi_reserve_10 *cdb; 5146 5147 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5148 5149 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5150 ctl_set_invalid_field(ctsio, 5151 /*sks_valid*/ 1, 5152 /*command*/ 1, 5153 /*field*/ 1, 5154 /*bit_valid*/ 1, 5155 /*bit*/ 0); 5156 ctl_done((union ctl_io *)ctsio); 5157 return (CTL_RETVAL_COMPLETE); 5158 } 5159 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5160 ctl_set_invalid_field(ctsio, 5161 /*sks_valid*/ 1, 5162 /*command*/ 1, 5163 /*field*/ 1, 5164 /*bit_valid*/ 1, 5165 /*bit*/ 4); 5166 ctl_done((union ctl_io *)ctsio); 5167 return (CTL_RETVAL_COMPLETE); 5168 } 5169 if (cdb->byte2 & SR10_LONGID) 5170 longid = 1; 5171 else 5172 thirdparty_id = cdb->thirdparty_id; 5173 5174 resv_id = cdb->resv_id; 5175 length = scsi_2btoul(cdb->length); 5176 break; 5177 } 5178 } 5179 5180 /* 5181 * XXX KDM right now, we only support LUN reservation. We don't 5182 * support 3rd party reservations, or extent reservations, which 5183 * might actually need the parameter list. If we've gotten this 5184 * far, we've got a LUN reservation. Anything else got kicked out 5185 * above. So, according to SPC, ignore the length. 5186 */ 5187 length = 0; 5188 5189 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5190 && (length > 0)) { 5191 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5192 if (ctsio->kern_data_ptr == NULL) { 5193 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5194 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5195 ctl_done((union ctl_io *)ctsio); 5196 return (CTL_RETVAL_COMPLETE); 5197 } 5198 ctsio->kern_data_len = length; 5199 ctsio->kern_total_len = length; 5200 ctsio->kern_data_resid = 0; 5201 ctsio->kern_rel_offset = 0; 5202 ctsio->kern_sg_entries = 0; 5203 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5204 ctsio->be_move_done = ctl_config_move_done; 5205 ctl_datamove((union ctl_io *)ctsio); 5206 5207 return (CTL_RETVAL_COMPLETE); 5208 } 5209 5210 if (length > 0) 5211 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5212 5213 mtx_lock(&ctl_softc->ctl_lock); 5214 if (lun->flags & CTL_LUN_RESERVED) { 5215 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5216 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5217 || (ctsio->io_hdr.nexus.targ_target.id != 5218 lun->rsv_nexus.targ_target.id)) { 5219 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5220 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5221 goto bailout; 5222 } 5223 } 5224 5225 lun->flags |= CTL_LUN_RESERVED; 5226 lun->rsv_nexus = ctsio->io_hdr.nexus; 5227 5228 ctsio->scsi_status = SCSI_STATUS_OK; 5229 ctsio->io_hdr.status = CTL_SUCCESS; 5230 5231 bailout: 5232 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5233 free(ctsio->kern_data_ptr, M_CTL); 5234 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5235 } 5236 5237 mtx_unlock(&ctl_softc->ctl_lock); 5238 5239 ctl_done((union ctl_io *)ctsio); 5240 return (CTL_RETVAL_COMPLETE); 5241 } 5242 5243 int 5244 ctl_start_stop(struct ctl_scsiio *ctsio) 5245 { 5246 struct scsi_start_stop_unit *cdb; 5247 struct ctl_lun *lun; 5248 struct ctl_softc *ctl_softc; 5249 int retval; 5250 5251 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5252 5253 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5254 ctl_softc = control_softc; 5255 retval = 0; 5256 5257 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5258 5259 /* 5260 * XXX KDM 5261 * We don't support the immediate bit on a stop unit. In order to 5262 * do that, we would need to code up a way to know that a stop is 5263 * pending, and hold off any new commands until it completes, one 5264 * way or another. Then we could accept or reject those commands 5265 * depending on its status. We would almost need to do the reverse 5266 * of what we do below for an immediate start -- return the copy of 5267 * the ctl_io to the FETD with status to send to the host (and to 5268 * free the copy!) and then free the original I/O once the stop 5269 * actually completes. That way, the OOA queue mechanism can work 5270 * to block commands that shouldn't proceed. Another alternative 5271 * would be to put the copy in the queue in place of the original, 5272 * and return the original back to the caller. That could be 5273 * slightly safer.. 5274 */ 5275 if ((cdb->byte2 & SSS_IMMED) 5276 && ((cdb->how & SSS_START) == 0)) { 5277 ctl_set_invalid_field(ctsio, 5278 /*sks_valid*/ 1, 5279 /*command*/ 1, 5280 /*field*/ 1, 5281 /*bit_valid*/ 1, 5282 /*bit*/ 0); 5283 ctl_done((union ctl_io *)ctsio); 5284 return (CTL_RETVAL_COMPLETE); 5285 } 5286 5287 /* 5288 * We don't support the power conditions field. We need to check 5289 * this prior to checking the load/eject and start/stop bits. 5290 */ 5291 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5292 ctl_set_invalid_field(ctsio, 5293 /*sks_valid*/ 1, 5294 /*command*/ 1, 5295 /*field*/ 4, 5296 /*bit_valid*/ 1, 5297 /*bit*/ 4); 5298 ctl_done((union ctl_io *)ctsio); 5299 return (CTL_RETVAL_COMPLETE); 5300 } 5301 5302 /* 5303 * Media isn't removable, so we can't load or eject it. 5304 */ 5305 if ((cdb->how & SSS_LOEJ) != 0) { 5306 ctl_set_invalid_field(ctsio, 5307 /*sks_valid*/ 1, 5308 /*command*/ 1, 5309 /*field*/ 4, 5310 /*bit_valid*/ 1, 5311 /*bit*/ 1); 5312 ctl_done((union ctl_io *)ctsio); 5313 return (CTL_RETVAL_COMPLETE); 5314 } 5315 5316 if ((lun->flags & CTL_LUN_PR_RESERVED) 5317 && ((cdb->how & SSS_START)==0)) { 5318 uint32_t residx; 5319 5320 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5321 if (!lun->per_res[residx].registered 5322 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5323 5324 ctl_set_reservation_conflict(ctsio); 5325 ctl_done((union ctl_io *)ctsio); 5326 return (CTL_RETVAL_COMPLETE); 5327 } 5328 } 5329 5330 /* 5331 * If there is no backend on this device, we can't start or stop 5332 * it. In theory we shouldn't get any start/stop commands in the 5333 * first place at this level if the LUN doesn't have a backend. 5334 * That should get stopped by the command decode code. 5335 */ 5336 if (lun->backend == NULL) { 5337 ctl_set_invalid_opcode(ctsio); 5338 ctl_done((union ctl_io *)ctsio); 5339 return (CTL_RETVAL_COMPLETE); 5340 } 5341 5342 /* 5343 * XXX KDM Copan-specific offline behavior. 5344 * Figure out a reasonable way to port this? 5345 */ 5346 #ifdef NEEDTOPORT 5347 mtx_lock(&ctl_softc->ctl_lock); 5348 5349 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5350 && (lun->flags & CTL_LUN_OFFLINE)) { 5351 /* 5352 * If the LUN is offline, and the on/offline bit isn't set, 5353 * reject the start or stop. Otherwise, let it through. 5354 */ 5355 mtx_unlock(&ctl_softc->ctl_lock); 5356 ctl_set_lun_not_ready(ctsio); 5357 ctl_done((union ctl_io *)ctsio); 5358 } else { 5359 mtx_unlock(&ctl_softc->ctl_lock); 5360 #endif /* NEEDTOPORT */ 5361 /* 5362 * This could be a start or a stop when we're online, 5363 * or a stop/offline or start/online. A start or stop when 5364 * we're offline is covered in the case above. 5365 */ 5366 /* 5367 * In the non-immediate case, we send the request to 5368 * the backend and return status to the user when 5369 * it is done. 5370 * 5371 * In the immediate case, we allocate a new ctl_io 5372 * to hold a copy of the request, and send that to 5373 * the backend. We then set good status on the 5374 * user's request and return it immediately. 5375 */ 5376 if (cdb->byte2 & SSS_IMMED) { 5377 union ctl_io *new_io; 5378 5379 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5380 if (new_io == NULL) { 5381 ctl_set_busy(ctsio); 5382 ctl_done((union ctl_io *)ctsio); 5383 } else { 5384 ctl_copy_io((union ctl_io *)ctsio, 5385 new_io); 5386 retval = lun->backend->config_write(new_io); 5387 ctl_set_success(ctsio); 5388 ctl_done((union ctl_io *)ctsio); 5389 } 5390 } else { 5391 retval = lun->backend->config_write( 5392 (union ctl_io *)ctsio); 5393 } 5394 #ifdef NEEDTOPORT 5395 } 5396 #endif 5397 return (retval); 5398 } 5399 5400 /* 5401 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5402 * we don't really do anything with the LBA and length fields if the user 5403 * passes them in. Instead we'll just flush out the cache for the entire 5404 * LUN. 5405 */ 5406 int 5407 ctl_sync_cache(struct ctl_scsiio *ctsio) 5408 { 5409 struct ctl_lun *lun; 5410 struct ctl_softc *ctl_softc; 5411 uint64_t starting_lba; 5412 uint32_t block_count; 5413 int reladr, immed; 5414 int retval; 5415 5416 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5417 5418 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5419 ctl_softc = control_softc; 5420 retval = 0; 5421 reladr = 0; 5422 immed = 0; 5423 5424 switch (ctsio->cdb[0]) { 5425 case SYNCHRONIZE_CACHE: { 5426 struct scsi_sync_cache *cdb; 5427 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5428 5429 if (cdb->byte2 & SSC_RELADR) 5430 reladr = 1; 5431 5432 if (cdb->byte2 & SSC_IMMED) 5433 immed = 1; 5434 5435 starting_lba = scsi_4btoul(cdb->begin_lba); 5436 block_count = scsi_2btoul(cdb->lb_count); 5437 break; 5438 } 5439 case SYNCHRONIZE_CACHE_16: { 5440 struct scsi_sync_cache_16 *cdb; 5441 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5442 5443 if (cdb->byte2 & SSC_RELADR) 5444 reladr = 1; 5445 5446 if (cdb->byte2 & SSC_IMMED) 5447 immed = 1; 5448 5449 starting_lba = scsi_8btou64(cdb->begin_lba); 5450 block_count = scsi_4btoul(cdb->lb_count); 5451 break; 5452 } 5453 default: 5454 ctl_set_invalid_opcode(ctsio); 5455 ctl_done((union ctl_io *)ctsio); 5456 goto bailout; 5457 break; /* NOTREACHED */ 5458 } 5459 5460 if (immed) { 5461 /* 5462 * We don't support the immediate bit. Since it's in the 5463 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5464 * commands, we can just return the same error in either 5465 * case. 5466 */ 5467 ctl_set_invalid_field(ctsio, 5468 /*sks_valid*/ 1, 5469 /*command*/ 1, 5470 /*field*/ 1, 5471 /*bit_valid*/ 1, 5472 /*bit*/ 1); 5473 ctl_done((union ctl_io *)ctsio); 5474 goto bailout; 5475 } 5476 5477 if (reladr) { 5478 /* 5479 * We don't support the reladr bit either. It can only be 5480 * used with linked commands, and we don't support linked 5481 * commands. Since the bit is in the same place for the 5482 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5483 * just return the same error in either case. 5484 */ 5485 ctl_set_invalid_field(ctsio, 5486 /*sks_valid*/ 1, 5487 /*command*/ 1, 5488 /*field*/ 1, 5489 /*bit_valid*/ 1, 5490 /*bit*/ 0); 5491 ctl_done((union ctl_io *)ctsio); 5492 goto bailout; 5493 } 5494 5495 /* 5496 * We check the LBA and length, but don't do anything with them. 5497 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5498 * get flushed. This check will just help satisfy anyone who wants 5499 * to see an error for an out of range LBA. 5500 */ 5501 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5502 ctl_set_lba_out_of_range(ctsio); 5503 ctl_done((union ctl_io *)ctsio); 5504 goto bailout; 5505 } 5506 5507 /* 5508 * If this LUN has no backend, we can't flush the cache anyway. 5509 */ 5510 if (lun->backend == NULL) { 5511 ctl_set_invalid_opcode(ctsio); 5512 ctl_done((union ctl_io *)ctsio); 5513 goto bailout; 5514 } 5515 5516 /* 5517 * Check to see whether we're configured to send the SYNCHRONIZE 5518 * CACHE command directly to the back end. 5519 */ 5520 mtx_lock(&ctl_softc->ctl_lock); 5521 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5522 && (++(lun->sync_count) >= lun->sync_interval)) { 5523 lun->sync_count = 0; 5524 mtx_unlock(&ctl_softc->ctl_lock); 5525 retval = lun->backend->config_write((union ctl_io *)ctsio); 5526 } else { 5527 mtx_unlock(&ctl_softc->ctl_lock); 5528 ctl_set_success(ctsio); 5529 ctl_done((union ctl_io *)ctsio); 5530 } 5531 5532 bailout: 5533 5534 return (retval); 5535 } 5536 5537 int 5538 ctl_format(struct ctl_scsiio *ctsio) 5539 { 5540 struct scsi_format *cdb; 5541 struct ctl_lun *lun; 5542 struct ctl_softc *ctl_softc; 5543 int length, defect_list_len; 5544 5545 CTL_DEBUG_PRINT(("ctl_format\n")); 5546 5547 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5548 ctl_softc = control_softc; 5549 5550 cdb = (struct scsi_format *)ctsio->cdb; 5551 5552 length = 0; 5553 if (cdb->byte2 & SF_FMTDATA) { 5554 if (cdb->byte2 & SF_LONGLIST) 5555 length = sizeof(struct scsi_format_header_long); 5556 else 5557 length = sizeof(struct scsi_format_header_short); 5558 } 5559 5560 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5561 && (length > 0)) { 5562 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5563 if (ctsio->kern_data_ptr == NULL) { 5564 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5565 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5566 ctl_done((union ctl_io *)ctsio); 5567 return (CTL_RETVAL_COMPLETE); 5568 } 5569 ctsio->kern_data_len = length; 5570 ctsio->kern_total_len = length; 5571 ctsio->kern_data_resid = 0; 5572 ctsio->kern_rel_offset = 0; 5573 ctsio->kern_sg_entries = 0; 5574 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5575 ctsio->be_move_done = ctl_config_move_done; 5576 ctl_datamove((union ctl_io *)ctsio); 5577 5578 return (CTL_RETVAL_COMPLETE); 5579 } 5580 5581 defect_list_len = 0; 5582 5583 if (cdb->byte2 & SF_FMTDATA) { 5584 if (cdb->byte2 & SF_LONGLIST) { 5585 struct scsi_format_header_long *header; 5586 5587 header = (struct scsi_format_header_long *) 5588 ctsio->kern_data_ptr; 5589 5590 defect_list_len = scsi_4btoul(header->defect_list_len); 5591 if (defect_list_len != 0) { 5592 ctl_set_invalid_field(ctsio, 5593 /*sks_valid*/ 1, 5594 /*command*/ 0, 5595 /*field*/ 2, 5596 /*bit_valid*/ 0, 5597 /*bit*/ 0); 5598 goto bailout; 5599 } 5600 } else { 5601 struct scsi_format_header_short *header; 5602 5603 header = (struct scsi_format_header_short *) 5604 ctsio->kern_data_ptr; 5605 5606 defect_list_len = scsi_2btoul(header->defect_list_len); 5607 if (defect_list_len != 0) { 5608 ctl_set_invalid_field(ctsio, 5609 /*sks_valid*/ 1, 5610 /*command*/ 0, 5611 /*field*/ 2, 5612 /*bit_valid*/ 0, 5613 /*bit*/ 0); 5614 goto bailout; 5615 } 5616 } 5617 } 5618 5619 /* 5620 * The format command will clear out the "Medium format corrupted" 5621 * status if set by the configuration code. That status is really 5622 * just a way to notify the host that we have lost the media, and 5623 * get them to issue a command that will basically make them think 5624 * they're blowing away the media. 5625 */ 5626 mtx_lock(&ctl_softc->ctl_lock); 5627 lun->flags &= ~CTL_LUN_INOPERABLE; 5628 mtx_unlock(&ctl_softc->ctl_lock); 5629 5630 ctsio->scsi_status = SCSI_STATUS_OK; 5631 ctsio->io_hdr.status = CTL_SUCCESS; 5632 bailout: 5633 5634 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5635 free(ctsio->kern_data_ptr, M_CTL); 5636 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5637 } 5638 5639 ctl_done((union ctl_io *)ctsio); 5640 return (CTL_RETVAL_COMPLETE); 5641 } 5642 5643 int 5644 ctl_write_buffer(struct ctl_scsiio *ctsio) 5645 { 5646 struct scsi_write_buffer *cdb; 5647 struct copan_page_header *header; 5648 struct ctl_lun *lun; 5649 struct ctl_softc *ctl_softc; 5650 int buffer_offset, len; 5651 int retval; 5652 5653 header = NULL; 5654 5655 retval = CTL_RETVAL_COMPLETE; 5656 5657 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5658 5659 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5660 ctl_softc = control_softc; 5661 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5662 5663 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5664 ctl_set_invalid_field(ctsio, 5665 /*sks_valid*/ 1, 5666 /*command*/ 1, 5667 /*field*/ 1, 5668 /*bit_valid*/ 1, 5669 /*bit*/ 4); 5670 ctl_done((union ctl_io *)ctsio); 5671 return (CTL_RETVAL_COMPLETE); 5672 } 5673 if (cdb->buffer_id != 0) { 5674 ctl_set_invalid_field(ctsio, 5675 /*sks_valid*/ 1, 5676 /*command*/ 1, 5677 /*field*/ 2, 5678 /*bit_valid*/ 0, 5679 /*bit*/ 0); 5680 ctl_done((union ctl_io *)ctsio); 5681 return (CTL_RETVAL_COMPLETE); 5682 } 5683 5684 len = scsi_3btoul(cdb->length); 5685 buffer_offset = scsi_3btoul(cdb->offset); 5686 5687 if (len > sizeof(lun->write_buffer)) { 5688 ctl_set_invalid_field(ctsio, 5689 /*sks_valid*/ 1, 5690 /*command*/ 1, 5691 /*field*/ 6, 5692 /*bit_valid*/ 0, 5693 /*bit*/ 0); 5694 ctl_done((union ctl_io *)ctsio); 5695 return (CTL_RETVAL_COMPLETE); 5696 } 5697 5698 if (buffer_offset != 0) { 5699 ctl_set_invalid_field(ctsio, 5700 /*sks_valid*/ 1, 5701 /*command*/ 1, 5702 /*field*/ 3, 5703 /*bit_valid*/ 0, 5704 /*bit*/ 0); 5705 ctl_done((union ctl_io *)ctsio); 5706 return (CTL_RETVAL_COMPLETE); 5707 } 5708 5709 /* 5710 * If we've got a kernel request that hasn't been malloced yet, 5711 * malloc it and tell the caller the data buffer is here. 5712 */ 5713 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5714 ctsio->kern_data_ptr = lun->write_buffer; 5715 ctsio->kern_data_len = len; 5716 ctsio->kern_total_len = len; 5717 ctsio->kern_data_resid = 0; 5718 ctsio->kern_rel_offset = 0; 5719 ctsio->kern_sg_entries = 0; 5720 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5721 ctsio->be_move_done = ctl_config_move_done; 5722 ctl_datamove((union ctl_io *)ctsio); 5723 5724 return (CTL_RETVAL_COMPLETE); 5725 } 5726 5727 ctl_done((union ctl_io *)ctsio); 5728 5729 return (CTL_RETVAL_COMPLETE); 5730 } 5731 5732 /* 5733 * Note that this function currently doesn't actually do anything inside 5734 * CTL to enforce things if the DQue bit is turned on. 5735 * 5736 * Also note that this function can't be used in the default case, because 5737 * the DQue bit isn't set in the changeable mask for the control mode page 5738 * anyway. This is just here as an example for how to implement a page 5739 * handler, and a placeholder in case we want to allow the user to turn 5740 * tagged queueing on and off. 5741 * 5742 * The D_SENSE bit handling is functional, however, and will turn 5743 * descriptor sense on and off for a given LUN. 5744 */ 5745 int 5746 ctl_control_page_handler(struct ctl_scsiio *ctsio, 5747 struct ctl_page_index *page_index, uint8_t *page_ptr) 5748 { 5749 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5750 struct ctl_lun *lun; 5751 struct ctl_softc *softc; 5752 int set_ua; 5753 uint32_t initidx; 5754 5755 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5756 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5757 set_ua = 0; 5758 5759 user_cp = (struct scsi_control_page *)page_ptr; 5760 current_cp = (struct scsi_control_page *) 5761 (page_index->page_data + (page_index->page_len * 5762 CTL_PAGE_CURRENT)); 5763 saved_cp = (struct scsi_control_page *) 5764 (page_index->page_data + (page_index->page_len * 5765 CTL_PAGE_SAVED)); 5766 5767 softc = control_softc; 5768 5769 mtx_lock(&softc->ctl_lock); 5770 if (((current_cp->rlec & SCP_DSENSE) == 0) 5771 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5772 /* 5773 * Descriptor sense is currently turned off and the user 5774 * wants to turn it on. 5775 */ 5776 current_cp->rlec |= SCP_DSENSE; 5777 saved_cp->rlec |= SCP_DSENSE; 5778 lun->flags |= CTL_LUN_SENSE_DESC; 5779 set_ua = 1; 5780 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5781 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5782 /* 5783 * Descriptor sense is currently turned on, and the user 5784 * wants to turn it off. 5785 */ 5786 current_cp->rlec &= ~SCP_DSENSE; 5787 saved_cp->rlec &= ~SCP_DSENSE; 5788 lun->flags &= ~CTL_LUN_SENSE_DESC; 5789 set_ua = 1; 5790 } 5791 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5792 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5793 #ifdef NEEDTOPORT 5794 csevent_log(CSC_CTL | CSC_SHELF_SW | 5795 CTL_UNTAG_TO_UNTAG, 5796 csevent_LogType_Trace, 5797 csevent_Severity_Information, 5798 csevent_AlertLevel_Green, 5799 csevent_FRU_Firmware, 5800 csevent_FRU_Unknown, 5801 "Received untagged to untagged transition"); 5802 #endif /* NEEDTOPORT */ 5803 } else { 5804 #ifdef NEEDTOPORT 5805 csevent_log(CSC_CTL | CSC_SHELF_SW | 5806 CTL_UNTAG_TO_TAG, 5807 csevent_LogType_ConfigChange, 5808 csevent_Severity_Information, 5809 csevent_AlertLevel_Green, 5810 csevent_FRU_Firmware, 5811 csevent_FRU_Unknown, 5812 "Received untagged to tagged " 5813 "queueing transition"); 5814 #endif /* NEEDTOPORT */ 5815 5816 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5817 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5818 set_ua = 1; 5819 } 5820 } else { 5821 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5822 #ifdef NEEDTOPORT 5823 csevent_log(CSC_CTL | CSC_SHELF_SW | 5824 CTL_TAG_TO_UNTAG, 5825 csevent_LogType_ConfigChange, 5826 csevent_Severity_Warning, 5827 csevent_AlertLevel_Yellow, 5828 csevent_FRU_Firmware, 5829 csevent_FRU_Unknown, 5830 "Received tagged queueing to untagged " 5831 "transition"); 5832 #endif /* NEEDTOPORT */ 5833 5834 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5835 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5836 set_ua = 1; 5837 } else { 5838 #ifdef NEEDTOPORT 5839 csevent_log(CSC_CTL | CSC_SHELF_SW | 5840 CTL_TAG_TO_TAG, 5841 csevent_LogType_Trace, 5842 csevent_Severity_Information, 5843 csevent_AlertLevel_Green, 5844 csevent_FRU_Firmware, 5845 csevent_FRU_Unknown, 5846 "Received tagged queueing to tagged " 5847 "queueing transition"); 5848 #endif /* NEEDTOPORT */ 5849 } 5850 } 5851 if (set_ua != 0) { 5852 int i; 5853 /* 5854 * Let other initiators know that the mode 5855 * parameters for this LUN have changed. 5856 */ 5857 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 5858 if (i == initidx) 5859 continue; 5860 5861 lun->pending_sense[i].ua_pending |= 5862 CTL_UA_MODE_CHANGE; 5863 } 5864 } 5865 mtx_unlock(&softc->ctl_lock); 5866 5867 return (0); 5868 } 5869 5870 int 5871 ctl_power_sp_handler(struct ctl_scsiio *ctsio, 5872 struct ctl_page_index *page_index, uint8_t *page_ptr) 5873 { 5874 return (0); 5875 } 5876 5877 int 5878 ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 5879 struct ctl_page_index *page_index, int pc) 5880 { 5881 struct copan_power_subpage *page; 5882 5883 page = (struct copan_power_subpage *)page_index->page_data + 5884 (page_index->page_len * pc); 5885 5886 switch (pc) { 5887 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5888 /* 5889 * We don't update the changable bits for this page. 5890 */ 5891 break; 5892 case SMS_PAGE_CTRL_CURRENT >> 6: 5893 case SMS_PAGE_CTRL_DEFAULT >> 6: 5894 case SMS_PAGE_CTRL_SAVED >> 6: 5895 #ifdef NEEDTOPORT 5896 ctl_update_power_subpage(page); 5897 #endif 5898 break; 5899 default: 5900 #ifdef NEEDTOPORT 5901 EPRINT(0, "Invalid PC %d!!", pc); 5902 #endif 5903 break; 5904 } 5905 return (0); 5906 } 5907 5908 5909 int 5910 ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 5911 struct ctl_page_index *page_index, uint8_t *page_ptr) 5912 { 5913 struct copan_aps_subpage *user_sp; 5914 struct copan_aps_subpage *current_sp; 5915 union ctl_modepage_info *modepage_info; 5916 struct ctl_softc *softc; 5917 struct ctl_lun *lun; 5918 int retval; 5919 5920 retval = CTL_RETVAL_COMPLETE; 5921 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 5922 (page_index->page_len * CTL_PAGE_CURRENT)); 5923 softc = control_softc; 5924 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5925 5926 user_sp = (struct copan_aps_subpage *)page_ptr; 5927 5928 modepage_info = (union ctl_modepage_info *) 5929 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 5930 5931 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 5932 modepage_info->header.subpage = page_index->subpage; 5933 modepage_info->aps.lock_active = user_sp->lock_active; 5934 5935 mtx_lock(&softc->ctl_lock); 5936 5937 /* 5938 * If there is a request to lock the LUN and another LUN is locked 5939 * this is an error. If the requested LUN is already locked ignore 5940 * the request. If no LUN is locked attempt to lock it. 5941 * if there is a request to unlock the LUN and the LUN is currently 5942 * locked attempt to unlock it. Otherwise ignore the request. i.e. 5943 * if another LUN is locked or no LUN is locked. 5944 */ 5945 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 5946 if (softc->aps_locked_lun == lun->lun) { 5947 /* 5948 * This LUN is already locked, so we're done. 5949 */ 5950 retval = CTL_RETVAL_COMPLETE; 5951 } else if (softc->aps_locked_lun == 0) { 5952 /* 5953 * No one has the lock, pass the request to the 5954 * backend. 5955 */ 5956 retval = lun->backend->config_write( 5957 (union ctl_io *)ctsio); 5958 } else { 5959 /* 5960 * Someone else has the lock, throw out the request. 5961 */ 5962 ctl_set_already_locked(ctsio); 5963 free(ctsio->kern_data_ptr, M_CTL); 5964 ctl_done((union ctl_io *)ctsio); 5965 5966 /* 5967 * Set the return value so that ctl_do_mode_select() 5968 * won't try to complete the command. We already 5969 * completed it here. 5970 */ 5971 retval = CTL_RETVAL_ERROR; 5972 } 5973 } else if (softc->aps_locked_lun == lun->lun) { 5974 /* 5975 * This LUN is locked, so pass the unlock request to the 5976 * backend. 5977 */ 5978 retval = lun->backend->config_write((union ctl_io *)ctsio); 5979 } 5980 mtx_unlock(&softc->ctl_lock); 5981 5982 return (retval); 5983 } 5984 5985 int 5986 ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 5987 struct ctl_page_index *page_index, 5988 uint8_t *page_ptr) 5989 { 5990 uint8_t *c; 5991 int i; 5992 5993 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 5994 ctl_time_io_secs = 5995 (c[0] << 8) | 5996 (c[1] << 0) | 5997 0; 5998 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 5999 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6000 printf("page data:"); 6001 for (i=0; i<8; i++) 6002 printf(" %.2x",page_ptr[i]); 6003 printf("\n"); 6004 return (0); 6005 } 6006 6007 int 6008 ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6009 struct ctl_page_index *page_index, 6010 int pc) 6011 { 6012 struct copan_debugconf_subpage *page; 6013 6014 page = (struct copan_debugconf_subpage *)page_index->page_data + 6015 (page_index->page_len * pc); 6016 6017 switch (pc) { 6018 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6019 case SMS_PAGE_CTRL_DEFAULT >> 6: 6020 case SMS_PAGE_CTRL_SAVED >> 6: 6021 /* 6022 * We don't update the changable or default bits for this page. 6023 */ 6024 break; 6025 case SMS_PAGE_CTRL_CURRENT >> 6: 6026 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6027 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6028 break; 6029 default: 6030 #ifdef NEEDTOPORT 6031 EPRINT(0, "Invalid PC %d!!", pc); 6032 #endif /* NEEDTOPORT */ 6033 break; 6034 } 6035 return (0); 6036 } 6037 6038 6039 static int 6040 ctl_do_mode_select(union ctl_io *io) 6041 { 6042 struct scsi_mode_page_header *page_header; 6043 struct ctl_page_index *page_index; 6044 struct ctl_scsiio *ctsio; 6045 int control_dev, page_len; 6046 int page_len_offset, page_len_size; 6047 union ctl_modepage_info *modepage_info; 6048 struct ctl_lun *lun; 6049 int *len_left, *len_used; 6050 int retval, i; 6051 6052 ctsio = &io->scsiio; 6053 page_index = NULL; 6054 page_len = 0; 6055 retval = CTL_RETVAL_COMPLETE; 6056 6057 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6058 6059 if (lun->be_lun->lun_type != T_DIRECT) 6060 control_dev = 1; 6061 else 6062 control_dev = 0; 6063 6064 modepage_info = (union ctl_modepage_info *) 6065 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6066 len_left = &modepage_info->header.len_left; 6067 len_used = &modepage_info->header.len_used; 6068 6069 do_next_page: 6070 6071 page_header = (struct scsi_mode_page_header *) 6072 (ctsio->kern_data_ptr + *len_used); 6073 6074 if (*len_left == 0) { 6075 free(ctsio->kern_data_ptr, M_CTL); 6076 ctl_set_success(ctsio); 6077 ctl_done((union ctl_io *)ctsio); 6078 return (CTL_RETVAL_COMPLETE); 6079 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6080 6081 free(ctsio->kern_data_ptr, M_CTL); 6082 ctl_set_param_len_error(ctsio); 6083 ctl_done((union ctl_io *)ctsio); 6084 return (CTL_RETVAL_COMPLETE); 6085 6086 } else if ((page_header->page_code & SMPH_SPF) 6087 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 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 6095 6096 /* 6097 * XXX KDM should we do something with the block descriptor? 6098 */ 6099 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6100 6101 if ((control_dev != 0) 6102 && (lun->mode_pages.index[i].page_flags & 6103 CTL_PAGE_FLAG_DISK_ONLY)) 6104 continue; 6105 6106 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6107 (page_header->page_code & SMPH_PC_MASK)) 6108 continue; 6109 6110 /* 6111 * If neither page has a subpage code, then we've got a 6112 * match. 6113 */ 6114 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6115 && ((page_header->page_code & SMPH_SPF) == 0)) { 6116 page_index = &lun->mode_pages.index[i]; 6117 page_len = page_header->page_length; 6118 break; 6119 } 6120 6121 /* 6122 * If both pages have subpages, then the subpage numbers 6123 * have to match. 6124 */ 6125 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6126 && (page_header->page_code & SMPH_SPF)) { 6127 struct scsi_mode_page_header_sp *sph; 6128 6129 sph = (struct scsi_mode_page_header_sp *)page_header; 6130 6131 if (lun->mode_pages.index[i].subpage == 6132 sph->subpage) { 6133 page_index = &lun->mode_pages.index[i]; 6134 page_len = scsi_2btoul(sph->page_length); 6135 break; 6136 } 6137 } 6138 } 6139 6140 /* 6141 * If we couldn't find the page, or if we don't have a mode select 6142 * handler for it, send back an error to the user. 6143 */ 6144 if ((page_index == NULL) 6145 || (page_index->select_handler == NULL)) { 6146 ctl_set_invalid_field(ctsio, 6147 /*sks_valid*/ 1, 6148 /*command*/ 0, 6149 /*field*/ *len_used, 6150 /*bit_valid*/ 0, 6151 /*bit*/ 0); 6152 free(ctsio->kern_data_ptr, M_CTL); 6153 ctl_done((union ctl_io *)ctsio); 6154 return (CTL_RETVAL_COMPLETE); 6155 } 6156 6157 if (page_index->page_code & SMPH_SPF) { 6158 page_len_offset = 2; 6159 page_len_size = 2; 6160 } else { 6161 page_len_size = 1; 6162 page_len_offset = 1; 6163 } 6164 6165 /* 6166 * If the length the initiator gives us isn't the one we specify in 6167 * the mode page header, or if they didn't specify enough data in 6168 * the CDB to avoid truncating this page, kick out the request. 6169 */ 6170 if ((page_len != (page_index->page_len - page_len_offset - 6171 page_len_size)) 6172 || (*len_left < page_index->page_len)) { 6173 6174 6175 ctl_set_invalid_field(ctsio, 6176 /*sks_valid*/ 1, 6177 /*command*/ 0, 6178 /*field*/ *len_used + page_len_offset, 6179 /*bit_valid*/ 0, 6180 /*bit*/ 0); 6181 free(ctsio->kern_data_ptr, M_CTL); 6182 ctl_done((union ctl_io *)ctsio); 6183 return (CTL_RETVAL_COMPLETE); 6184 } 6185 6186 /* 6187 * Run through the mode page, checking to make sure that the bits 6188 * the user changed are actually legal for him to change. 6189 */ 6190 for (i = 0; i < page_index->page_len; i++) { 6191 uint8_t *user_byte, *change_mask, *current_byte; 6192 int bad_bit; 6193 int j; 6194 6195 user_byte = (uint8_t *)page_header + i; 6196 change_mask = page_index->page_data + 6197 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6198 current_byte = page_index->page_data + 6199 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6200 6201 /* 6202 * Check to see whether the user set any bits in this byte 6203 * that he is not allowed to set. 6204 */ 6205 if ((*user_byte & ~(*change_mask)) == 6206 (*current_byte & ~(*change_mask))) 6207 continue; 6208 6209 /* 6210 * Go through bit by bit to determine which one is illegal. 6211 */ 6212 bad_bit = 0; 6213 for (j = 7; j >= 0; j--) { 6214 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6215 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6216 bad_bit = i; 6217 break; 6218 } 6219 } 6220 ctl_set_invalid_field(ctsio, 6221 /*sks_valid*/ 1, 6222 /*command*/ 0, 6223 /*field*/ *len_used + i, 6224 /*bit_valid*/ 1, 6225 /*bit*/ bad_bit); 6226 free(ctsio->kern_data_ptr, M_CTL); 6227 ctl_done((union ctl_io *)ctsio); 6228 return (CTL_RETVAL_COMPLETE); 6229 } 6230 6231 /* 6232 * Decrement these before we call the page handler, since we may 6233 * end up getting called back one way or another before the handler 6234 * returns to this context. 6235 */ 6236 *len_left -= page_index->page_len; 6237 *len_used += page_index->page_len; 6238 6239 retval = page_index->select_handler(ctsio, page_index, 6240 (uint8_t *)page_header); 6241 6242 /* 6243 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6244 * wait until this queued command completes to finish processing 6245 * the mode page. If it returns anything other than 6246 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6247 * already set the sense information, freed the data pointer, and 6248 * completed the io for us. 6249 */ 6250 if (retval != CTL_RETVAL_COMPLETE) 6251 goto bailout_no_done; 6252 6253 /* 6254 * If the initiator sent us more than one page, parse the next one. 6255 */ 6256 if (*len_left > 0) 6257 goto do_next_page; 6258 6259 ctl_set_success(ctsio); 6260 free(ctsio->kern_data_ptr, M_CTL); 6261 ctl_done((union ctl_io *)ctsio); 6262 6263 bailout_no_done: 6264 6265 return (CTL_RETVAL_COMPLETE); 6266 6267 } 6268 6269 int 6270 ctl_mode_select(struct ctl_scsiio *ctsio) 6271 { 6272 int param_len, pf, sp; 6273 int header_size, bd_len; 6274 int len_left, len_used; 6275 struct ctl_page_index *page_index; 6276 struct ctl_lun *lun; 6277 int control_dev, page_len; 6278 union ctl_modepage_info *modepage_info; 6279 int retval; 6280 6281 pf = 0; 6282 sp = 0; 6283 page_len = 0; 6284 len_used = 0; 6285 len_left = 0; 6286 retval = 0; 6287 bd_len = 0; 6288 page_index = NULL; 6289 6290 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6291 6292 if (lun->be_lun->lun_type != T_DIRECT) 6293 control_dev = 1; 6294 else 6295 control_dev = 0; 6296 6297 switch (ctsio->cdb[0]) { 6298 case MODE_SELECT_6: { 6299 struct scsi_mode_select_6 *cdb; 6300 6301 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6302 6303 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6304 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6305 6306 param_len = cdb->length; 6307 header_size = sizeof(struct scsi_mode_header_6); 6308 break; 6309 } 6310 case MODE_SELECT_10: { 6311 struct scsi_mode_select_10 *cdb; 6312 6313 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6314 6315 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6316 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6317 6318 param_len = scsi_2btoul(cdb->length); 6319 header_size = sizeof(struct scsi_mode_header_10); 6320 break; 6321 } 6322 default: 6323 ctl_set_invalid_opcode(ctsio); 6324 ctl_done((union ctl_io *)ctsio); 6325 return (CTL_RETVAL_COMPLETE); 6326 break; /* NOTREACHED */ 6327 } 6328 6329 /* 6330 * From SPC-3: 6331 * "A parameter list length of zero indicates that the Data-Out Buffer 6332 * shall be empty. This condition shall not be considered as an error." 6333 */ 6334 if (param_len == 0) { 6335 ctl_set_success(ctsio); 6336 ctl_done((union ctl_io *)ctsio); 6337 return (CTL_RETVAL_COMPLETE); 6338 } 6339 6340 /* 6341 * Since we'll hit this the first time through, prior to 6342 * allocation, we don't need to free a data buffer here. 6343 */ 6344 if (param_len < header_size) { 6345 ctl_set_param_len_error(ctsio); 6346 ctl_done((union ctl_io *)ctsio); 6347 return (CTL_RETVAL_COMPLETE); 6348 } 6349 6350 /* 6351 * Allocate the data buffer and grab the user's data. In theory, 6352 * we shouldn't have to sanity check the parameter list length here 6353 * because the maximum size is 64K. We should be able to malloc 6354 * that much without too many problems. 6355 */ 6356 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6357 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6358 if (ctsio->kern_data_ptr == NULL) { 6359 ctl_set_busy(ctsio); 6360 ctl_done((union ctl_io *)ctsio); 6361 return (CTL_RETVAL_COMPLETE); 6362 } 6363 ctsio->kern_data_len = param_len; 6364 ctsio->kern_total_len = param_len; 6365 ctsio->kern_data_resid = 0; 6366 ctsio->kern_rel_offset = 0; 6367 ctsio->kern_sg_entries = 0; 6368 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6369 ctsio->be_move_done = ctl_config_move_done; 6370 ctl_datamove((union ctl_io *)ctsio); 6371 6372 return (CTL_RETVAL_COMPLETE); 6373 } 6374 6375 switch (ctsio->cdb[0]) { 6376 case MODE_SELECT_6: { 6377 struct scsi_mode_header_6 *mh6; 6378 6379 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6380 bd_len = mh6->blk_desc_len; 6381 break; 6382 } 6383 case MODE_SELECT_10: { 6384 struct scsi_mode_header_10 *mh10; 6385 6386 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6387 bd_len = scsi_2btoul(mh10->blk_desc_len); 6388 break; 6389 } 6390 default: 6391 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6392 break; 6393 } 6394 6395 if (param_len < (header_size + bd_len)) { 6396 free(ctsio->kern_data_ptr, M_CTL); 6397 ctl_set_param_len_error(ctsio); 6398 ctl_done((union ctl_io *)ctsio); 6399 return (CTL_RETVAL_COMPLETE); 6400 } 6401 6402 /* 6403 * Set the IO_CONT flag, so that if this I/O gets passed to 6404 * ctl_config_write_done(), it'll get passed back to 6405 * ctl_do_mode_select() for further processing, or completion if 6406 * we're all done. 6407 */ 6408 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6409 ctsio->io_cont = ctl_do_mode_select; 6410 6411 modepage_info = (union ctl_modepage_info *) 6412 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6413 6414 memset(modepage_info, 0, sizeof(*modepage_info)); 6415 6416 len_left = param_len - header_size - bd_len; 6417 len_used = header_size + bd_len; 6418 6419 modepage_info->header.len_left = len_left; 6420 modepage_info->header.len_used = len_used; 6421 6422 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6423 } 6424 6425 int 6426 ctl_mode_sense(struct ctl_scsiio *ctsio) 6427 { 6428 struct ctl_lun *lun; 6429 int pc, page_code, dbd, llba, subpage; 6430 int alloc_len, page_len, header_len, total_len; 6431 struct scsi_mode_block_descr *block_desc; 6432 struct ctl_page_index *page_index; 6433 int control_dev; 6434 6435 dbd = 0; 6436 llba = 0; 6437 block_desc = NULL; 6438 page_index = NULL; 6439 6440 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6441 6442 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6443 6444 if (lun->be_lun->lun_type != T_DIRECT) 6445 control_dev = 1; 6446 else 6447 control_dev = 0; 6448 6449 switch (ctsio->cdb[0]) { 6450 case MODE_SENSE_6: { 6451 struct scsi_mode_sense_6 *cdb; 6452 6453 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6454 6455 header_len = sizeof(struct scsi_mode_hdr_6); 6456 if (cdb->byte2 & SMS_DBD) 6457 dbd = 1; 6458 else 6459 header_len += sizeof(struct scsi_mode_block_descr); 6460 6461 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6462 page_code = cdb->page & SMS_PAGE_CODE; 6463 subpage = cdb->subpage; 6464 alloc_len = cdb->length; 6465 break; 6466 } 6467 case MODE_SENSE_10: { 6468 struct scsi_mode_sense_10 *cdb; 6469 6470 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6471 6472 header_len = sizeof(struct scsi_mode_hdr_10); 6473 6474 if (cdb->byte2 & SMS_DBD) 6475 dbd = 1; 6476 else 6477 header_len += sizeof(struct scsi_mode_block_descr); 6478 if (cdb->byte2 & SMS10_LLBAA) 6479 llba = 1; 6480 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6481 page_code = cdb->page & SMS_PAGE_CODE; 6482 subpage = cdb->subpage; 6483 alloc_len = scsi_2btoul(cdb->length); 6484 break; 6485 } 6486 default: 6487 ctl_set_invalid_opcode(ctsio); 6488 ctl_done((union ctl_io *)ctsio); 6489 return (CTL_RETVAL_COMPLETE); 6490 break; /* NOTREACHED */ 6491 } 6492 6493 /* 6494 * We have to make a first pass through to calculate the size of 6495 * the pages that match the user's query. Then we allocate enough 6496 * memory to hold it, and actually copy the data into the buffer. 6497 */ 6498 switch (page_code) { 6499 case SMS_ALL_PAGES_PAGE: { 6500 int i; 6501 6502 page_len = 0; 6503 6504 /* 6505 * At the moment, values other than 0 and 0xff here are 6506 * reserved according to SPC-3. 6507 */ 6508 if ((subpage != SMS_SUBPAGE_PAGE_0) 6509 && (subpage != SMS_SUBPAGE_ALL)) { 6510 ctl_set_invalid_field(ctsio, 6511 /*sks_valid*/ 1, 6512 /*command*/ 1, 6513 /*field*/ 3, 6514 /*bit_valid*/ 0, 6515 /*bit*/ 0); 6516 ctl_done((union ctl_io *)ctsio); 6517 return (CTL_RETVAL_COMPLETE); 6518 } 6519 6520 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6521 if ((control_dev != 0) 6522 && (lun->mode_pages.index[i].page_flags & 6523 CTL_PAGE_FLAG_DISK_ONLY)) 6524 continue; 6525 6526 /* 6527 * We don't use this subpage if the user didn't 6528 * request all subpages. 6529 */ 6530 if ((lun->mode_pages.index[i].subpage != 0) 6531 && (subpage == SMS_SUBPAGE_PAGE_0)) 6532 continue; 6533 6534 #if 0 6535 printf("found page %#x len %d\n", 6536 lun->mode_pages.index[i].page_code & 6537 SMPH_PC_MASK, 6538 lun->mode_pages.index[i].page_len); 6539 #endif 6540 page_len += lun->mode_pages.index[i].page_len; 6541 } 6542 break; 6543 } 6544 default: { 6545 int i; 6546 6547 page_len = 0; 6548 6549 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6550 /* Look for the right page code */ 6551 if ((lun->mode_pages.index[i].page_code & 6552 SMPH_PC_MASK) != page_code) 6553 continue; 6554 6555 /* Look for the right subpage or the subpage wildcard*/ 6556 if ((lun->mode_pages.index[i].subpage != subpage) 6557 && (subpage != SMS_SUBPAGE_ALL)) 6558 continue; 6559 6560 /* Make sure the page is supported for this dev type */ 6561 if ((control_dev != 0) 6562 && (lun->mode_pages.index[i].page_flags & 6563 CTL_PAGE_FLAG_DISK_ONLY)) 6564 continue; 6565 6566 #if 0 6567 printf("found page %#x len %d\n", 6568 lun->mode_pages.index[i].page_code & 6569 SMPH_PC_MASK, 6570 lun->mode_pages.index[i].page_len); 6571 #endif 6572 6573 page_len += lun->mode_pages.index[i].page_len; 6574 } 6575 6576 if (page_len == 0) { 6577 ctl_set_invalid_field(ctsio, 6578 /*sks_valid*/ 1, 6579 /*command*/ 1, 6580 /*field*/ 2, 6581 /*bit_valid*/ 1, 6582 /*bit*/ 5); 6583 ctl_done((union ctl_io *)ctsio); 6584 return (CTL_RETVAL_COMPLETE); 6585 } 6586 break; 6587 } 6588 } 6589 6590 total_len = header_len + page_len; 6591 #if 0 6592 printf("header_len = %d, page_len = %d, total_len = %d\n", 6593 header_len, page_len, total_len); 6594 #endif 6595 6596 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 6597 if (ctsio->kern_data_ptr == NULL) { 6598 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6599 ctsio->scsi_status = SCSI_STATUS_BUSY; 6600 ctl_done((union ctl_io *)ctsio); 6601 return (CTL_RETVAL_COMPLETE); 6602 } 6603 ctsio->kern_sg_entries = 0; 6604 ctsio->kern_data_resid = 0; 6605 ctsio->kern_rel_offset = 0; 6606 if (total_len < alloc_len) { 6607 ctsio->residual = alloc_len - total_len; 6608 ctsio->kern_data_len = total_len; 6609 ctsio->kern_total_len = total_len; 6610 } else { 6611 ctsio->residual = 0; 6612 ctsio->kern_data_len = alloc_len; 6613 ctsio->kern_total_len = alloc_len; 6614 } 6615 memset(ctsio->kern_data_ptr, 0, total_len); 6616 6617 switch (ctsio->cdb[0]) { 6618 case MODE_SENSE_6: { 6619 struct scsi_mode_hdr_6 *header; 6620 6621 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6622 6623 header->datalen = ctl_min(total_len - 1, 254); 6624 6625 if (dbd) 6626 header->block_descr_len = 0; 6627 else 6628 header->block_descr_len = 6629 sizeof(struct scsi_mode_block_descr); 6630 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6631 break; 6632 } 6633 case MODE_SENSE_10: { 6634 struct scsi_mode_hdr_10 *header; 6635 int datalen; 6636 6637 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6638 6639 datalen = ctl_min(total_len - 2, 65533); 6640 scsi_ulto2b(datalen, header->datalen); 6641 if (dbd) 6642 scsi_ulto2b(0, header->block_descr_len); 6643 else 6644 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6645 header->block_descr_len); 6646 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6647 break; 6648 } 6649 default: 6650 panic("invalid CDB type %#x", ctsio->cdb[0]); 6651 break; /* NOTREACHED */ 6652 } 6653 6654 /* 6655 * If we've got a disk, use its blocksize in the block 6656 * descriptor. Otherwise, just set it to 0. 6657 */ 6658 if (dbd == 0) { 6659 if (control_dev != 0) 6660 scsi_ulto3b(lun->be_lun->blocksize, 6661 block_desc->block_len); 6662 else 6663 scsi_ulto3b(0, block_desc->block_len); 6664 } 6665 6666 switch (page_code) { 6667 case SMS_ALL_PAGES_PAGE: { 6668 int i, data_used; 6669 6670 data_used = header_len; 6671 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6672 struct ctl_page_index *page_index; 6673 6674 page_index = &lun->mode_pages.index[i]; 6675 6676 if ((control_dev != 0) 6677 && (page_index->page_flags & 6678 CTL_PAGE_FLAG_DISK_ONLY)) 6679 continue; 6680 6681 /* 6682 * We don't use this subpage if the user didn't 6683 * request all subpages. We already checked (above) 6684 * to make sure the user only specified a subpage 6685 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6686 */ 6687 if ((page_index->subpage != 0) 6688 && (subpage == SMS_SUBPAGE_PAGE_0)) 6689 continue; 6690 6691 /* 6692 * Call the handler, if it exists, to update the 6693 * page to the latest values. 6694 */ 6695 if (page_index->sense_handler != NULL) 6696 page_index->sense_handler(ctsio, page_index,pc); 6697 6698 memcpy(ctsio->kern_data_ptr + data_used, 6699 page_index->page_data + 6700 (page_index->page_len * pc), 6701 page_index->page_len); 6702 data_used += page_index->page_len; 6703 } 6704 break; 6705 } 6706 default: { 6707 int i, data_used; 6708 6709 data_used = header_len; 6710 6711 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6712 struct ctl_page_index *page_index; 6713 6714 page_index = &lun->mode_pages.index[i]; 6715 6716 /* Look for the right page code */ 6717 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6718 continue; 6719 6720 /* Look for the right subpage or the subpage wildcard*/ 6721 if ((page_index->subpage != subpage) 6722 && (subpage != SMS_SUBPAGE_ALL)) 6723 continue; 6724 6725 /* Make sure the page is supported for this dev type */ 6726 if ((control_dev != 0) 6727 && (page_index->page_flags & 6728 CTL_PAGE_FLAG_DISK_ONLY)) 6729 continue; 6730 6731 /* 6732 * Call the handler, if it exists, to update the 6733 * page to the latest values. 6734 */ 6735 if (page_index->sense_handler != NULL) 6736 page_index->sense_handler(ctsio, page_index,pc); 6737 6738 memcpy(ctsio->kern_data_ptr + data_used, 6739 page_index->page_data + 6740 (page_index->page_len * pc), 6741 page_index->page_len); 6742 data_used += page_index->page_len; 6743 } 6744 break; 6745 } 6746 } 6747 6748 ctsio->scsi_status = SCSI_STATUS_OK; 6749 6750 ctsio->be_move_done = ctl_config_move_done; 6751 ctl_datamove((union ctl_io *)ctsio); 6752 6753 return (CTL_RETVAL_COMPLETE); 6754 } 6755 6756 int 6757 ctl_read_capacity(struct ctl_scsiio *ctsio) 6758 { 6759 struct scsi_read_capacity *cdb; 6760 struct scsi_read_capacity_data *data; 6761 struct ctl_lun *lun; 6762 uint32_t lba; 6763 6764 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6765 6766 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6767 6768 lba = scsi_4btoul(cdb->addr); 6769 if (((cdb->pmi & SRC_PMI) == 0) 6770 && (lba != 0)) { 6771 ctl_set_invalid_field(/*ctsio*/ ctsio, 6772 /*sks_valid*/ 1, 6773 /*command*/ 1, 6774 /*field*/ 2, 6775 /*bit_valid*/ 0, 6776 /*bit*/ 0); 6777 ctl_done((union ctl_io *)ctsio); 6778 return (CTL_RETVAL_COMPLETE); 6779 } 6780 6781 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6782 6783 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK); 6784 if (ctsio->kern_data_ptr == NULL) { 6785 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6786 ctsio->scsi_status = SCSI_STATUS_BUSY; 6787 ctl_done((union ctl_io *)ctsio); 6788 return (CTL_RETVAL_COMPLETE); 6789 } 6790 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6791 ctsio->residual = 0; 6792 ctsio->kern_data_len = sizeof(*data); 6793 ctsio->kern_total_len = sizeof(*data); 6794 ctsio->kern_data_resid = 0; 6795 ctsio->kern_rel_offset = 0; 6796 ctsio->kern_sg_entries = 0; 6797 6798 memset(data, 0, sizeof(*data)); 6799 6800 /* 6801 * If the maximum LBA is greater than 0xfffffffe, the user must 6802 * issue a SERVICE ACTION IN (16) command, with the read capacity 6803 * serivce action set. 6804 */ 6805 if (lun->be_lun->maxlba > 0xfffffffe) 6806 scsi_ulto4b(0xffffffff, data->addr); 6807 else 6808 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6809 6810 /* 6811 * XXX KDM this may not be 512 bytes... 6812 */ 6813 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6814 6815 ctsio->scsi_status = SCSI_STATUS_OK; 6816 6817 ctsio->be_move_done = ctl_config_move_done; 6818 ctl_datamove((union ctl_io *)ctsio); 6819 6820 return (CTL_RETVAL_COMPLETE); 6821 } 6822 6823 static int 6824 ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6825 { 6826 struct scsi_read_capacity_16 *cdb; 6827 struct scsi_read_capacity_data_long *data; 6828 struct ctl_lun *lun; 6829 uint64_t lba; 6830 uint32_t alloc_len; 6831 6832 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6833 6834 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6835 6836 alloc_len = scsi_4btoul(cdb->alloc_len); 6837 lba = scsi_8btou64(cdb->addr); 6838 6839 if ((cdb->reladr & SRC16_PMI) 6840 && (lba != 0)) { 6841 ctl_set_invalid_field(/*ctsio*/ ctsio, 6842 /*sks_valid*/ 1, 6843 /*command*/ 1, 6844 /*field*/ 2, 6845 /*bit_valid*/ 0, 6846 /*bit*/ 0); 6847 ctl_done((union ctl_io *)ctsio); 6848 return (CTL_RETVAL_COMPLETE); 6849 } 6850 6851 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6852 6853 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK); 6854 if (ctsio->kern_data_ptr == NULL) { 6855 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6856 ctsio->scsi_status = SCSI_STATUS_BUSY; 6857 ctl_done((union ctl_io *)ctsio); 6858 return (CTL_RETVAL_COMPLETE); 6859 } 6860 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6861 6862 if (sizeof(*data) < alloc_len) { 6863 ctsio->residual = alloc_len - sizeof(*data); 6864 ctsio->kern_data_len = sizeof(*data); 6865 ctsio->kern_total_len = sizeof(*data); 6866 } else { 6867 ctsio->residual = 0; 6868 ctsio->kern_data_len = alloc_len; 6869 ctsio->kern_total_len = alloc_len; 6870 } 6871 ctsio->kern_data_resid = 0; 6872 ctsio->kern_rel_offset = 0; 6873 ctsio->kern_sg_entries = 0; 6874 6875 memset(data, 0, sizeof(*data)); 6876 6877 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 6878 /* XXX KDM this may not be 512 bytes... */ 6879 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6880 6881 ctsio->scsi_status = SCSI_STATUS_OK; 6882 6883 ctsio->be_move_done = ctl_config_move_done; 6884 ctl_datamove((union ctl_io *)ctsio); 6885 6886 return (CTL_RETVAL_COMPLETE); 6887 } 6888 6889 int 6890 ctl_service_action_in(struct ctl_scsiio *ctsio) 6891 { 6892 struct scsi_service_action_in *cdb; 6893 int retval; 6894 6895 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 6896 6897 cdb = (struct scsi_service_action_in *)ctsio->cdb; 6898 6899 retval = CTL_RETVAL_COMPLETE; 6900 6901 switch (cdb->service_action) { 6902 case SRC16_SERVICE_ACTION: 6903 retval = ctl_read_capacity_16(ctsio); 6904 break; 6905 default: 6906 ctl_set_invalid_field(/*ctsio*/ ctsio, 6907 /*sks_valid*/ 1, 6908 /*command*/ 1, 6909 /*field*/ 1, 6910 /*bit_valid*/ 1, 6911 /*bit*/ 4); 6912 ctl_done((union ctl_io *)ctsio); 6913 break; 6914 } 6915 6916 return (retval); 6917 } 6918 6919 int 6920 ctl_maintenance_in(struct ctl_scsiio *ctsio) 6921 { 6922 struct scsi_maintenance_in *cdb; 6923 int retval; 6924 int alloc_len, total_len = 0; 6925 int num_target_port_groups; 6926 struct ctl_lun *lun; 6927 struct ctl_softc *softc; 6928 struct scsi_target_group_data *rtg_ptr; 6929 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 6930 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 6931 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 6932 6933 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 6934 6935 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 6936 softc = control_softc; 6937 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6938 6939 retval = CTL_RETVAL_COMPLETE; 6940 mtx_lock(&softc->ctl_lock); 6941 6942 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 6943 ctl_set_invalid_field(/*ctsio*/ ctsio, 6944 /*sks_valid*/ 1, 6945 /*command*/ 1, 6946 /*field*/ 1, 6947 /*bit_valid*/ 1, 6948 /*bit*/ 4); 6949 ctl_done((union ctl_io *)ctsio); 6950 return(retval); 6951 } 6952 6953 if (ctl_is_single) 6954 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 6955 else 6956 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 6957 6958 total_len = sizeof(struct scsi_target_group_data) + 6959 sizeof(struct scsi_target_port_group_descriptor) * 6960 num_target_port_groups + 6961 sizeof(struct scsi_target_port_descriptor) * 6962 NUM_PORTS_PER_GRP * num_target_port_groups; 6963 6964 alloc_len = scsi_4btoul(cdb->length); 6965 6966 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 6967 if (ctsio->kern_data_ptr == NULL) { 6968 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6969 ctsio->scsi_status = SCSI_STATUS_BUSY; 6970 ctl_done((union ctl_io *)ctsio); 6971 return (CTL_RETVAL_COMPLETE); 6972 } 6973 memset(ctsio->kern_data_ptr, 0, total_len); 6974 6975 ctsio->kern_sg_entries = 0; 6976 6977 if (total_len < alloc_len) { 6978 ctsio->residual = alloc_len - total_len; 6979 ctsio->kern_data_len = total_len; 6980 ctsio->kern_total_len = total_len; 6981 } else { 6982 ctsio->residual = 0; 6983 ctsio->kern_data_len = alloc_len; 6984 ctsio->kern_total_len = alloc_len; 6985 } 6986 ctsio->kern_data_resid = 0; 6987 ctsio->kern_rel_offset = 0; 6988 6989 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 6990 6991 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 6992 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 6993 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 6994 &tp_desc_ptr1_1->desc_list[0]; 6995 6996 6997 6998 if (ctl_is_single == 0) { 6999 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7000 &tp_desc_ptr1_2->desc_list[0]; 7001 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7002 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7003 &tp_desc_ptr2_1->desc_list[0]; 7004 } else { 7005 tpg_desc_ptr2 = NULL; 7006 tp_desc_ptr2_1 = NULL; 7007 tp_desc_ptr2_2 = NULL; 7008 } 7009 7010 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7011 if (ctl_is_single == 0) { 7012 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7013 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7014 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7015 tpg_desc_ptr2->pref_state = 7016 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7017 } else { 7018 tpg_desc_ptr1->pref_state = 7019 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7020 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7021 } 7022 } else { 7023 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7024 tpg_desc_ptr1->pref_state = 7025 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7026 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7027 } else { 7028 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7029 tpg_desc_ptr2->pref_state = 7030 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7031 } 7032 } 7033 } else { 7034 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7035 } 7036 tpg_desc_ptr1->support = 0; 7037 tpg_desc_ptr1->target_port_group[1] = 1; 7038 tpg_desc_ptr1->status = TPG_IMPLICIT; 7039 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7040 7041 if (ctl_is_single == 0) { 7042 tpg_desc_ptr2->support = 0; 7043 tpg_desc_ptr2->target_port_group[1] = 2; 7044 tpg_desc_ptr2->status = TPG_IMPLICIT; 7045 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7046 7047 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7048 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7049 7050 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7051 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7052 } else { 7053 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7054 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7055 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7056 } else { 7057 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7058 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7059 } 7060 } 7061 7062 mtx_unlock(&softc->ctl_lock); 7063 7064 ctsio->be_move_done = ctl_config_move_done; 7065 7066 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7067 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7068 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7069 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7070 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7071 7072 ctl_datamove((union ctl_io *)ctsio); 7073 return(retval); 7074 } 7075 7076 int 7077 ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7078 { 7079 struct scsi_per_res_in *cdb; 7080 int alloc_len, total_len = 0; 7081 /* struct scsi_per_res_in_rsrv in_data; */ 7082 struct ctl_lun *lun; 7083 struct ctl_softc *softc; 7084 7085 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7086 7087 softc = control_softc; 7088 7089 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7090 7091 alloc_len = scsi_2btoul(cdb->length); 7092 7093 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7094 7095 retry: 7096 mtx_lock(&softc->ctl_lock); 7097 switch (cdb->action) { 7098 case SPRI_RK: /* read keys */ 7099 total_len = sizeof(struct scsi_per_res_in_keys) + 7100 lun->pr_key_count * 7101 sizeof(struct scsi_per_res_key); 7102 break; 7103 case SPRI_RR: /* read reservation */ 7104 if (lun->flags & CTL_LUN_PR_RESERVED) 7105 total_len = sizeof(struct scsi_per_res_in_rsrv); 7106 else 7107 total_len = sizeof(struct scsi_per_res_in_header); 7108 break; 7109 case SPRI_RC: /* report capabilities */ 7110 total_len = sizeof(struct scsi_per_res_cap); 7111 break; 7112 case SPRI_RS: /* read full status */ 7113 default: 7114 mtx_unlock(&softc->ctl_lock); 7115 ctl_set_invalid_field(ctsio, 7116 /*sks_valid*/ 1, 7117 /*command*/ 1, 7118 /*field*/ 1, 7119 /*bit_valid*/ 1, 7120 /*bit*/ 0); 7121 ctl_done((union ctl_io *)ctsio); 7122 return (CTL_RETVAL_COMPLETE); 7123 break; /* NOTREACHED */ 7124 } 7125 mtx_unlock(&softc->ctl_lock); 7126 7127 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 7128 if (ctsio->kern_data_ptr == NULL) { 7129 ctsio->io_hdr.status = CTL_SCSI_ERROR; 7130 ctsio->scsi_status = SCSI_STATUS_BUSY; 7131 ctl_done((union ctl_io *)ctsio); 7132 return (CTL_RETVAL_COMPLETE); 7133 } 7134 7135 if (total_len < alloc_len) { 7136 ctsio->residual = alloc_len - total_len; 7137 ctsio->kern_data_len = total_len; 7138 ctsio->kern_total_len = total_len; 7139 } else { 7140 ctsio->residual = 0; 7141 ctsio->kern_data_len = alloc_len; 7142 ctsio->kern_total_len = alloc_len; 7143 } 7144 7145 ctsio->kern_data_resid = 0; 7146 ctsio->kern_rel_offset = 0; 7147 ctsio->kern_sg_entries = 0; 7148 7149 memset(ctsio->kern_data_ptr, 0, total_len); 7150 7151 mtx_lock(&softc->ctl_lock); 7152 switch (cdb->action) { 7153 case SPRI_RK: { // read keys 7154 struct scsi_per_res_in_keys *res_keys; 7155 int i, key_count; 7156 7157 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7158 7159 /* 7160 * We had to drop the lock to allocate our buffer, which 7161 * leaves time for someone to come in with another 7162 * persistent reservation. (That is unlikely, though, 7163 * since this should be the only persistent reservation 7164 * command active right now.) 7165 */ 7166 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7167 (lun->pr_key_count * 7168 sizeof(struct scsi_per_res_key)))){ 7169 mtx_unlock(&softc->ctl_lock); 7170 free(ctsio->kern_data_ptr, M_CTL); 7171 printf("%s: reservation length changed, retrying\n", 7172 __func__); 7173 goto retry; 7174 } 7175 7176 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7177 7178 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7179 lun->pr_key_count, res_keys->header.length); 7180 7181 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7182 if (!lun->per_res[i].registered) 7183 continue; 7184 7185 /* 7186 * We used lun->pr_key_count to calculate the 7187 * size to allocate. If it turns out the number of 7188 * initiators with the registered flag set is 7189 * larger than that (i.e. they haven't been kept in 7190 * sync), we've got a problem. 7191 */ 7192 if (key_count >= lun->pr_key_count) { 7193 #ifdef NEEDTOPORT 7194 csevent_log(CSC_CTL | CSC_SHELF_SW | 7195 CTL_PR_ERROR, 7196 csevent_LogType_Fault, 7197 csevent_AlertLevel_Yellow, 7198 csevent_FRU_ShelfController, 7199 csevent_FRU_Firmware, 7200 csevent_FRU_Unknown, 7201 "registered keys %d >= key " 7202 "count %d", key_count, 7203 lun->pr_key_count); 7204 #endif 7205 key_count++; 7206 continue; 7207 } 7208 memcpy(res_keys->keys[key_count].key, 7209 lun->per_res[i].res_key.key, 7210 ctl_min(sizeof(res_keys->keys[key_count].key), 7211 sizeof(lun->per_res[i].res_key))); 7212 key_count++; 7213 } 7214 break; 7215 } 7216 case SPRI_RR: { // read reservation 7217 struct scsi_per_res_in_rsrv *res; 7218 int tmp_len, header_only; 7219 7220 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7221 7222 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7223 7224 if (lun->flags & CTL_LUN_PR_RESERVED) 7225 { 7226 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7227 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7228 res->header.length); 7229 header_only = 0; 7230 } else { 7231 tmp_len = sizeof(struct scsi_per_res_in_header); 7232 scsi_ulto4b(0, res->header.length); 7233 header_only = 1; 7234 } 7235 7236 /* 7237 * We had to drop the lock to allocate our buffer, which 7238 * leaves time for someone to come in with another 7239 * persistent reservation. (That is unlikely, though, 7240 * since this should be the only persistent reservation 7241 * command active right now.) 7242 */ 7243 if (tmp_len != total_len) { 7244 mtx_unlock(&softc->ctl_lock); 7245 free(ctsio->kern_data_ptr, M_CTL); 7246 printf("%s: reservation status changed, retrying\n", 7247 __func__); 7248 goto retry; 7249 } 7250 7251 /* 7252 * No reservation held, so we're done. 7253 */ 7254 if (header_only != 0) 7255 break; 7256 7257 /* 7258 * If the registration is an All Registrants type, the key 7259 * is 0, since it doesn't really matter. 7260 */ 7261 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7262 memcpy(res->data.reservation, 7263 &lun->per_res[lun->pr_res_idx].res_key, 7264 sizeof(struct scsi_per_res_key)); 7265 } 7266 res->data.scopetype = lun->res_type; 7267 break; 7268 } 7269 case SPRI_RC: //report capabilities 7270 { 7271 struct scsi_per_res_cap *res_cap; 7272 uint16_t type_mask; 7273 7274 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7275 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7276 res_cap->flags2 |= SPRI_TMV; 7277 type_mask = SPRI_TM_WR_EX_AR | 7278 SPRI_TM_EX_AC_RO | 7279 SPRI_TM_WR_EX_RO | 7280 SPRI_TM_EX_AC | 7281 SPRI_TM_WR_EX | 7282 SPRI_TM_EX_AC_AR; 7283 scsi_ulto2b(type_mask, res_cap->type_mask); 7284 break; 7285 } 7286 case SPRI_RS: //read full status 7287 default: 7288 /* 7289 * This is a bug, because we just checked for this above, 7290 * and should have returned an error. 7291 */ 7292 panic("Invalid PR type %x", cdb->action); 7293 break; /* NOTREACHED */ 7294 } 7295 mtx_unlock(&softc->ctl_lock); 7296 7297 ctsio->be_move_done = ctl_config_move_done; 7298 7299 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7300 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7301 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7302 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7303 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7304 7305 ctl_datamove((union ctl_io *)ctsio); 7306 7307 return (CTL_RETVAL_COMPLETE); 7308 } 7309 7310 /* 7311 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7312 * it should return. 7313 */ 7314 static int 7315 ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7316 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7317 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7318 struct scsi_per_res_out_parms* param) 7319 { 7320 union ctl_ha_msg persis_io; 7321 int retval, i; 7322 int isc_retval; 7323 7324 retval = 0; 7325 7326 if (sa_res_key == 0) { 7327 mtx_lock(&softc->ctl_lock); 7328 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7329 /* validate scope and type */ 7330 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7331 SPR_LU_SCOPE) { 7332 mtx_unlock(&softc->ctl_lock); 7333 ctl_set_invalid_field(/*ctsio*/ ctsio, 7334 /*sks_valid*/ 1, 7335 /*command*/ 1, 7336 /*field*/ 2, 7337 /*bit_valid*/ 1, 7338 /*bit*/ 4); 7339 ctl_done((union ctl_io *)ctsio); 7340 return (1); 7341 } 7342 7343 if (type>8 || type==2 || type==4 || type==0) { 7344 mtx_unlock(&softc->ctl_lock); 7345 ctl_set_invalid_field(/*ctsio*/ ctsio, 7346 /*sks_valid*/ 1, 7347 /*command*/ 1, 7348 /*field*/ 2, 7349 /*bit_valid*/ 1, 7350 /*bit*/ 0); 7351 ctl_done((union ctl_io *)ctsio); 7352 return (1); 7353 } 7354 7355 /* temporarily unregister this nexus */ 7356 lun->per_res[residx].registered = 0; 7357 7358 /* 7359 * Unregister everybody else and build UA for 7360 * them 7361 */ 7362 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7363 if (lun->per_res[i].registered == 0) 7364 continue; 7365 7366 if (!persis_offset 7367 && i <CTL_MAX_INITIATORS) 7368 lun->pending_sense[i].ua_pending |= 7369 CTL_UA_REG_PREEMPT; 7370 else if (persis_offset 7371 && i >= persis_offset) 7372 lun->pending_sense[i-persis_offset 7373 ].ua_pending |= 7374 CTL_UA_REG_PREEMPT; 7375 lun->per_res[i].registered = 0; 7376 memset(&lun->per_res[i].res_key, 0, 7377 sizeof(struct scsi_per_res_key)); 7378 } 7379 lun->per_res[residx].registered = 1; 7380 lun->pr_key_count = 1; 7381 lun->res_type = type; 7382 if (lun->res_type != SPR_TYPE_WR_EX_AR 7383 && lun->res_type != SPR_TYPE_EX_AC_AR) 7384 lun->pr_res_idx = residx; 7385 7386 mtx_unlock(&softc->ctl_lock); 7387 /* send msg to other side */ 7388 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7389 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7390 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7391 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7392 persis_io.pr.pr_info.res_type = type; 7393 memcpy(persis_io.pr.pr_info.sa_res_key, 7394 param->serv_act_res_key, 7395 sizeof(param->serv_act_res_key)); 7396 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7397 &persis_io, sizeof(persis_io), 0)) > 7398 CTL_HA_STATUS_SUCCESS) { 7399 printf("CTL:Persis Out error returned " 7400 "from ctl_ha_msg_send %d\n", 7401 isc_retval); 7402 } 7403 } else { 7404 /* not all registrants */ 7405 mtx_unlock(&softc->ctl_lock); 7406 free(ctsio->kern_data_ptr, M_CTL); 7407 ctl_set_invalid_field(ctsio, 7408 /*sks_valid*/ 1, 7409 /*command*/ 0, 7410 /*field*/ 8, 7411 /*bit_valid*/ 0, 7412 /*bit*/ 0); 7413 ctl_done((union ctl_io *)ctsio); 7414 return (1); 7415 } 7416 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7417 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7418 int found = 0; 7419 7420 mtx_lock(&softc->ctl_lock); 7421 if (res_key == sa_res_key) { 7422 /* special case */ 7423 /* 7424 * The spec implies this is not good but doesn't 7425 * say what to do. There are two choices either 7426 * generate a res conflict or check condition 7427 * with illegal field in parameter data. Since 7428 * that is what is done when the sa_res_key is 7429 * zero I'll take that approach since this has 7430 * to do with the sa_res_key. 7431 */ 7432 mtx_unlock(&softc->ctl_lock); 7433 free(ctsio->kern_data_ptr, M_CTL); 7434 ctl_set_invalid_field(ctsio, 7435 /*sks_valid*/ 1, 7436 /*command*/ 0, 7437 /*field*/ 8, 7438 /*bit_valid*/ 0, 7439 /*bit*/ 0); 7440 ctl_done((union ctl_io *)ctsio); 7441 return (1); 7442 } 7443 7444 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7445 if (lun->per_res[i].registered 7446 && memcmp(param->serv_act_res_key, 7447 lun->per_res[i].res_key.key, 7448 sizeof(struct scsi_per_res_key)) != 0) 7449 continue; 7450 7451 found = 1; 7452 lun->per_res[i].registered = 0; 7453 memset(&lun->per_res[i].res_key, 0, 7454 sizeof(struct scsi_per_res_key)); 7455 lun->pr_key_count--; 7456 7457 if (!persis_offset 7458 && i < CTL_MAX_INITIATORS) 7459 lun->pending_sense[i].ua_pending |= 7460 CTL_UA_REG_PREEMPT; 7461 else if (persis_offset 7462 && i >= persis_offset) 7463 lun->pending_sense[i-persis_offset].ua_pending|= 7464 CTL_UA_REG_PREEMPT; 7465 } 7466 mtx_unlock(&softc->ctl_lock); 7467 if (!found) { 7468 free(ctsio->kern_data_ptr, M_CTL); 7469 ctl_set_reservation_conflict(ctsio); 7470 ctl_done((union ctl_io *)ctsio); 7471 return (CTL_RETVAL_COMPLETE); 7472 } 7473 /* send msg to other side */ 7474 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7475 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7476 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7477 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7478 persis_io.pr.pr_info.res_type = type; 7479 memcpy(persis_io.pr.pr_info.sa_res_key, 7480 param->serv_act_res_key, 7481 sizeof(param->serv_act_res_key)); 7482 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7483 &persis_io, sizeof(persis_io), 0)) > 7484 CTL_HA_STATUS_SUCCESS) { 7485 printf("CTL:Persis Out error returned from " 7486 "ctl_ha_msg_send %d\n", isc_retval); 7487 } 7488 } else { 7489 /* Reserved but not all registrants */ 7490 /* sa_res_key is res holder */ 7491 if (memcmp(param->serv_act_res_key, 7492 lun->per_res[lun->pr_res_idx].res_key.key, 7493 sizeof(struct scsi_per_res_key)) == 0) { 7494 /* validate scope and type */ 7495 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7496 SPR_LU_SCOPE) { 7497 ctl_set_invalid_field(/*ctsio*/ ctsio, 7498 /*sks_valid*/ 1, 7499 /*command*/ 1, 7500 /*field*/ 2, 7501 /*bit_valid*/ 1, 7502 /*bit*/ 4); 7503 ctl_done((union ctl_io *)ctsio); 7504 return (1); 7505 } 7506 7507 if (type>8 || type==2 || type==4 || type==0) { 7508 ctl_set_invalid_field(/*ctsio*/ ctsio, 7509 /*sks_valid*/ 1, 7510 /*command*/ 1, 7511 /*field*/ 2, 7512 /*bit_valid*/ 1, 7513 /*bit*/ 0); 7514 ctl_done((union ctl_io *)ctsio); 7515 return (1); 7516 } 7517 7518 /* 7519 * Do the following: 7520 * if sa_res_key != res_key remove all 7521 * registrants w/sa_res_key and generate UA 7522 * for these registrants(Registrations 7523 * Preempted) if it wasn't an exclusive 7524 * reservation generate UA(Reservations 7525 * Preempted) for all other registered nexuses 7526 * if the type has changed. Establish the new 7527 * reservation and holder. If res_key and 7528 * sa_res_key are the same do the above 7529 * except don't unregister the res holder. 7530 */ 7531 7532 /* 7533 * Temporarily unregister so it won't get 7534 * removed or UA generated 7535 */ 7536 lun->per_res[residx].registered = 0; 7537 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7538 if (lun->per_res[i].registered == 0) 7539 continue; 7540 7541 if (memcmp(param->serv_act_res_key, 7542 lun->per_res[i].res_key.key, 7543 sizeof(struct scsi_per_res_key)) == 0) { 7544 lun->per_res[i].registered = 0; 7545 memset(&lun->per_res[i].res_key, 7546 0, 7547 sizeof(struct scsi_per_res_key)); 7548 lun->pr_key_count--; 7549 7550 if (!persis_offset 7551 && i < CTL_MAX_INITIATORS) 7552 lun->pending_sense[i 7553 ].ua_pending |= 7554 CTL_UA_REG_PREEMPT; 7555 else if (persis_offset 7556 && i >= persis_offset) 7557 lun->pending_sense[ 7558 i-persis_offset].ua_pending |= 7559 CTL_UA_REG_PREEMPT; 7560 } else if (type != lun->res_type 7561 && (lun->res_type == SPR_TYPE_WR_EX_RO 7562 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7563 if (!persis_offset 7564 && i < CTL_MAX_INITIATORS) 7565 lun->pending_sense[i 7566 ].ua_pending |= 7567 CTL_UA_RES_RELEASE; 7568 else if (persis_offset 7569 && i >= persis_offset) 7570 lun->pending_sense[ 7571 i-persis_offset 7572 ].ua_pending |= 7573 CTL_UA_RES_RELEASE; 7574 } 7575 } 7576 lun->per_res[residx].registered = 1; 7577 lun->res_type = type; 7578 if (lun->res_type != SPR_TYPE_WR_EX_AR 7579 && lun->res_type != SPR_TYPE_EX_AC_AR) 7580 lun->pr_res_idx = residx; 7581 else 7582 lun->pr_res_idx = 7583 CTL_PR_ALL_REGISTRANTS; 7584 7585 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7586 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7587 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7588 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7589 persis_io.pr.pr_info.res_type = type; 7590 memcpy(persis_io.pr.pr_info.sa_res_key, 7591 param->serv_act_res_key, 7592 sizeof(param->serv_act_res_key)); 7593 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7594 &persis_io, sizeof(persis_io), 0)) > 7595 CTL_HA_STATUS_SUCCESS) { 7596 printf("CTL:Persis Out error returned " 7597 "from ctl_ha_msg_send %d\n", 7598 isc_retval); 7599 } 7600 } else { 7601 /* 7602 * sa_res_key is not the res holder just 7603 * remove registrants 7604 */ 7605 int found=0; 7606 mtx_lock(&softc->ctl_lock); 7607 7608 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7609 if (memcmp(param->serv_act_res_key, 7610 lun->per_res[i].res_key.key, 7611 sizeof(struct scsi_per_res_key)) != 0) 7612 continue; 7613 7614 found = 1; 7615 lun->per_res[i].registered = 0; 7616 memset(&lun->per_res[i].res_key, 0, 7617 sizeof(struct scsi_per_res_key)); 7618 lun->pr_key_count--; 7619 7620 if (!persis_offset 7621 && i < CTL_MAX_INITIATORS) 7622 lun->pending_sense[i].ua_pending |= 7623 CTL_UA_REG_PREEMPT; 7624 else if (persis_offset 7625 && i >= persis_offset) 7626 lun->pending_sense[ 7627 i-persis_offset].ua_pending |= 7628 CTL_UA_REG_PREEMPT; 7629 } 7630 7631 if (!found) { 7632 mtx_unlock(&softc->ctl_lock); 7633 free(ctsio->kern_data_ptr, M_CTL); 7634 ctl_set_reservation_conflict(ctsio); 7635 ctl_done((union ctl_io *)ctsio); 7636 return (1); 7637 } 7638 mtx_unlock(&softc->ctl_lock); 7639 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7640 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7641 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7642 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7643 persis_io.pr.pr_info.res_type = type; 7644 memcpy(persis_io.pr.pr_info.sa_res_key, 7645 param->serv_act_res_key, 7646 sizeof(param->serv_act_res_key)); 7647 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7648 &persis_io, sizeof(persis_io), 0)) > 7649 CTL_HA_STATUS_SUCCESS) { 7650 printf("CTL:Persis Out error returned " 7651 "from ctl_ha_msg_send %d\n", 7652 isc_retval); 7653 } 7654 } 7655 } 7656 7657 lun->PRGeneration++; 7658 7659 return (retval); 7660 } 7661 7662 static void 7663 ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7664 { 7665 int i; 7666 7667 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7668 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7669 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7670 msg->pr.pr_info.sa_res_key, 7671 sizeof(struct scsi_per_res_key)) != 0) { 7672 uint64_t sa_res_key; 7673 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7674 7675 if (sa_res_key == 0) { 7676 /* temporarily unregister this nexus */ 7677 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7678 7679 /* 7680 * Unregister everybody else and build UA for 7681 * them 7682 */ 7683 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7684 if (lun->per_res[i].registered == 0) 7685 continue; 7686 7687 if (!persis_offset 7688 && i < CTL_MAX_INITIATORS) 7689 lun->pending_sense[i].ua_pending |= 7690 CTL_UA_REG_PREEMPT; 7691 else if (persis_offset && i >= persis_offset) 7692 lun->pending_sense[i - 7693 persis_offset].ua_pending |= 7694 CTL_UA_REG_PREEMPT; 7695 lun->per_res[i].registered = 0; 7696 memset(&lun->per_res[i].res_key, 0, 7697 sizeof(struct scsi_per_res_key)); 7698 } 7699 7700 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7701 lun->pr_key_count = 1; 7702 lun->res_type = msg->pr.pr_info.res_type; 7703 if (lun->res_type != SPR_TYPE_WR_EX_AR 7704 && lun->res_type != SPR_TYPE_EX_AC_AR) 7705 lun->pr_res_idx = msg->pr.pr_info.residx; 7706 } else { 7707 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7708 if (memcmp(msg->pr.pr_info.sa_res_key, 7709 lun->per_res[i].res_key.key, 7710 sizeof(struct scsi_per_res_key)) != 0) 7711 continue; 7712 7713 lun->per_res[i].registered = 0; 7714 memset(&lun->per_res[i].res_key, 0, 7715 sizeof(struct scsi_per_res_key)); 7716 lun->pr_key_count--; 7717 7718 if (!persis_offset 7719 && i < persis_offset) 7720 lun->pending_sense[i].ua_pending |= 7721 CTL_UA_REG_PREEMPT; 7722 else if (persis_offset 7723 && i >= persis_offset) 7724 lun->pending_sense[i - 7725 persis_offset].ua_pending |= 7726 CTL_UA_REG_PREEMPT; 7727 } 7728 } 7729 } else { 7730 /* 7731 * Temporarily unregister so it won't get removed 7732 * or UA generated 7733 */ 7734 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7735 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7736 if (lun->per_res[i].registered == 0) 7737 continue; 7738 7739 if (memcmp(msg->pr.pr_info.sa_res_key, 7740 lun->per_res[i].res_key.key, 7741 sizeof(struct scsi_per_res_key)) == 0) { 7742 lun->per_res[i].registered = 0; 7743 memset(&lun->per_res[i].res_key, 0, 7744 sizeof(struct scsi_per_res_key)); 7745 lun->pr_key_count--; 7746 if (!persis_offset 7747 && i < CTL_MAX_INITIATORS) 7748 lun->pending_sense[i].ua_pending |= 7749 CTL_UA_REG_PREEMPT; 7750 else if (persis_offset 7751 && i >= persis_offset) 7752 lun->pending_sense[i - 7753 persis_offset].ua_pending |= 7754 CTL_UA_REG_PREEMPT; 7755 } else if (msg->pr.pr_info.res_type != lun->res_type 7756 && (lun->res_type == SPR_TYPE_WR_EX_RO 7757 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7758 if (!persis_offset 7759 && i < persis_offset) 7760 lun->pending_sense[i 7761 ].ua_pending |= 7762 CTL_UA_RES_RELEASE; 7763 else if (persis_offset 7764 && i >= persis_offset) 7765 lun->pending_sense[i - 7766 persis_offset].ua_pending |= 7767 CTL_UA_RES_RELEASE; 7768 } 7769 } 7770 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7771 lun->res_type = msg->pr.pr_info.res_type; 7772 if (lun->res_type != SPR_TYPE_WR_EX_AR 7773 && lun->res_type != SPR_TYPE_EX_AC_AR) 7774 lun->pr_res_idx = msg->pr.pr_info.residx; 7775 else 7776 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7777 } 7778 lun->PRGeneration++; 7779 7780 } 7781 7782 7783 int 7784 ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7785 { 7786 int retval; 7787 int isc_retval; 7788 u_int32_t param_len; 7789 struct scsi_per_res_out *cdb; 7790 struct ctl_lun *lun; 7791 struct scsi_per_res_out_parms* param; 7792 struct ctl_softc *softc; 7793 uint32_t residx; 7794 uint64_t res_key, sa_res_key; 7795 uint8_t type; 7796 union ctl_ha_msg persis_io; 7797 int i; 7798 7799 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7800 7801 retval = CTL_RETVAL_COMPLETE; 7802 7803 softc = control_softc; 7804 7805 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7806 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7807 7808 /* 7809 * We only support whole-LUN scope. The scope & type are ignored for 7810 * register, register and ignore existing key and clear. 7811 * We sometimes ignore scope and type on preempts too!! 7812 * Verify reservation type here as well. 7813 */ 7814 type = cdb->scope_type & SPR_TYPE_MASK; 7815 if ((cdb->action == SPRO_RESERVE) 7816 || (cdb->action == SPRO_RELEASE)) { 7817 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7818 ctl_set_invalid_field(/*ctsio*/ ctsio, 7819 /*sks_valid*/ 1, 7820 /*command*/ 1, 7821 /*field*/ 2, 7822 /*bit_valid*/ 1, 7823 /*bit*/ 4); 7824 ctl_done((union ctl_io *)ctsio); 7825 return (CTL_RETVAL_COMPLETE); 7826 } 7827 7828 if (type>8 || type==2 || type==4 || type==0) { 7829 ctl_set_invalid_field(/*ctsio*/ ctsio, 7830 /*sks_valid*/ 1, 7831 /*command*/ 1, 7832 /*field*/ 2, 7833 /*bit_valid*/ 1, 7834 /*bit*/ 0); 7835 ctl_done((union ctl_io *)ctsio); 7836 return (CTL_RETVAL_COMPLETE); 7837 } 7838 } 7839 7840 switch (cdb->action & SPRO_ACTION_MASK) { 7841 case SPRO_REGISTER: 7842 case SPRO_RESERVE: 7843 case SPRO_RELEASE: 7844 case SPRO_CLEAR: 7845 case SPRO_PREEMPT: 7846 case SPRO_REG_IGNO: 7847 break; 7848 case SPRO_REG_MOVE: 7849 case SPRO_PRE_ABO: 7850 default: 7851 ctl_set_invalid_field(/*ctsio*/ ctsio, 7852 /*sks_valid*/ 1, 7853 /*command*/ 1, 7854 /*field*/ 1, 7855 /*bit_valid*/ 1, 7856 /*bit*/ 0); 7857 ctl_done((union ctl_io *)ctsio); 7858 return (CTL_RETVAL_COMPLETE); 7859 break; /* NOTREACHED */ 7860 } 7861 7862 param_len = scsi_4btoul(cdb->length); 7863 7864 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7865 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7866 if (ctsio->kern_data_ptr == NULL) { 7867 ctl_set_busy(ctsio); 7868 ctl_done((union ctl_io *)ctsio); 7869 return (CTL_RETVAL_COMPLETE); 7870 } 7871 ctsio->kern_data_len = param_len; 7872 ctsio->kern_total_len = param_len; 7873 ctsio->kern_data_resid = 0; 7874 ctsio->kern_rel_offset = 0; 7875 ctsio->kern_sg_entries = 0; 7876 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7877 ctsio->be_move_done = ctl_config_move_done; 7878 ctl_datamove((union ctl_io *)ctsio); 7879 7880 return (CTL_RETVAL_COMPLETE); 7881 } 7882 7883 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7884 7885 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7886 res_key = scsi_8btou64(param->res_key.key); 7887 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7888 7889 /* 7890 * Validate the reservation key here except for SPRO_REG_IGNO 7891 * This must be done for all other service actions 7892 */ 7893 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 7894 mtx_lock(&softc->ctl_lock); 7895 if (lun->per_res[residx].registered) { 7896 if (memcmp(param->res_key.key, 7897 lun->per_res[residx].res_key.key, 7898 ctl_min(sizeof(param->res_key), 7899 sizeof(lun->per_res[residx].res_key))) != 0) { 7900 /* 7901 * The current key passed in doesn't match 7902 * the one the initiator previously 7903 * registered. 7904 */ 7905 mtx_unlock(&softc->ctl_lock); 7906 free(ctsio->kern_data_ptr, M_CTL); 7907 ctl_set_reservation_conflict(ctsio); 7908 ctl_done((union ctl_io *)ctsio); 7909 return (CTL_RETVAL_COMPLETE); 7910 } 7911 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 7912 /* 7913 * We are not registered 7914 */ 7915 mtx_unlock(&softc->ctl_lock); 7916 free(ctsio->kern_data_ptr, M_CTL); 7917 ctl_set_reservation_conflict(ctsio); 7918 ctl_done((union ctl_io *)ctsio); 7919 return (CTL_RETVAL_COMPLETE); 7920 } else if (res_key != 0) { 7921 /* 7922 * We are not registered and trying to register but 7923 * the register key isn't zero. 7924 */ 7925 mtx_unlock(&softc->ctl_lock); 7926 free(ctsio->kern_data_ptr, M_CTL); 7927 ctl_set_reservation_conflict(ctsio); 7928 ctl_done((union ctl_io *)ctsio); 7929 return (CTL_RETVAL_COMPLETE); 7930 } 7931 mtx_unlock(&softc->ctl_lock); 7932 } 7933 7934 switch (cdb->action & SPRO_ACTION_MASK) { 7935 case SPRO_REGISTER: 7936 case SPRO_REG_IGNO: { 7937 7938 #if 0 7939 printf("Registration received\n"); 7940 #endif 7941 7942 /* 7943 * We don't support any of these options, as we report in 7944 * the read capabilities request (see 7945 * ctl_persistent_reserve_in(), above). 7946 */ 7947 if ((param->flags & SPR_SPEC_I_PT) 7948 || (param->flags & SPR_ALL_TG_PT) 7949 || (param->flags & SPR_APTPL)) { 7950 int bit_ptr; 7951 7952 if (param->flags & SPR_APTPL) 7953 bit_ptr = 0; 7954 else if (param->flags & SPR_ALL_TG_PT) 7955 bit_ptr = 2; 7956 else /* SPR_SPEC_I_PT */ 7957 bit_ptr = 3; 7958 7959 free(ctsio->kern_data_ptr, M_CTL); 7960 ctl_set_invalid_field(ctsio, 7961 /*sks_valid*/ 1, 7962 /*command*/ 0, 7963 /*field*/ 20, 7964 /*bit_valid*/ 1, 7965 /*bit*/ bit_ptr); 7966 ctl_done((union ctl_io *)ctsio); 7967 return (CTL_RETVAL_COMPLETE); 7968 } 7969 7970 mtx_lock(&softc->ctl_lock); 7971 7972 /* 7973 * The initiator wants to clear the 7974 * key/unregister. 7975 */ 7976 if (sa_res_key == 0) { 7977 if ((res_key == 0 7978 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 7979 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 7980 && !lun->per_res[residx].registered)) { 7981 mtx_unlock(&softc->ctl_lock); 7982 goto done; 7983 } 7984 7985 lun->per_res[residx].registered = 0; 7986 memset(&lun->per_res[residx].res_key, 7987 0, sizeof(lun->per_res[residx].res_key)); 7988 lun->pr_key_count--; 7989 7990 if (residx == lun->pr_res_idx) { 7991 lun->flags &= ~CTL_LUN_PR_RESERVED; 7992 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 7993 7994 if ((lun->res_type == SPR_TYPE_WR_EX_RO 7995 || lun->res_type == SPR_TYPE_EX_AC_RO) 7996 && lun->pr_key_count) { 7997 /* 7998 * If the reservation is a registrants 7999 * only type we need to generate a UA 8000 * for other registered inits. The 8001 * sense code should be RESERVATIONS 8002 * RELEASED 8003 */ 8004 8005 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8006 if (lun->per_res[ 8007 i+persis_offset].registered 8008 == 0) 8009 continue; 8010 lun->pending_sense[i 8011 ].ua_pending |= 8012 CTL_UA_RES_RELEASE; 8013 } 8014 } 8015 lun->res_type = 0; 8016 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8017 if (lun->pr_key_count==0) { 8018 lun->flags &= ~CTL_LUN_PR_RESERVED; 8019 lun->res_type = 0; 8020 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8021 } 8022 } 8023 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8024 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8025 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8026 persis_io.pr.pr_info.residx = residx; 8027 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8028 &persis_io, sizeof(persis_io), 0 )) > 8029 CTL_HA_STATUS_SUCCESS) { 8030 printf("CTL:Persis Out error returned from " 8031 "ctl_ha_msg_send %d\n", isc_retval); 8032 } 8033 mtx_unlock(&softc->ctl_lock); 8034 } else /* sa_res_key != 0 */ { 8035 8036 /* 8037 * If we aren't registered currently then increment 8038 * the key count and set the registered flag. 8039 */ 8040 if (!lun->per_res[residx].registered) { 8041 lun->pr_key_count++; 8042 lun->per_res[residx].registered = 1; 8043 } 8044 8045 memcpy(&lun->per_res[residx].res_key, 8046 param->serv_act_res_key, 8047 ctl_min(sizeof(param->serv_act_res_key), 8048 sizeof(lun->per_res[residx].res_key))); 8049 8050 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8051 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8052 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8053 persis_io.pr.pr_info.residx = residx; 8054 memcpy(persis_io.pr.pr_info.sa_res_key, 8055 param->serv_act_res_key, 8056 sizeof(param->serv_act_res_key)); 8057 mtx_unlock(&softc->ctl_lock); 8058 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8059 &persis_io, sizeof(persis_io), 0)) > 8060 CTL_HA_STATUS_SUCCESS) { 8061 printf("CTL:Persis Out error returned from " 8062 "ctl_ha_msg_send %d\n", isc_retval); 8063 } 8064 } 8065 lun->PRGeneration++; 8066 8067 break; 8068 } 8069 case SPRO_RESERVE: 8070 #if 0 8071 printf("Reserve executed type %d\n", type); 8072 #endif 8073 mtx_lock(&softc->ctl_lock); 8074 if (lun->flags & CTL_LUN_PR_RESERVED) { 8075 /* 8076 * if this isn't the reservation holder and it's 8077 * not a "all registrants" type or if the type is 8078 * different then we have a conflict 8079 */ 8080 if ((lun->pr_res_idx != residx 8081 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8082 || lun->res_type != type) { 8083 mtx_unlock(&softc->ctl_lock); 8084 free(ctsio->kern_data_ptr, M_CTL); 8085 ctl_set_reservation_conflict(ctsio); 8086 ctl_done((union ctl_io *)ctsio); 8087 return (CTL_RETVAL_COMPLETE); 8088 } 8089 } else /* create a reservation */ { 8090 /* 8091 * If it's not an "all registrants" type record 8092 * reservation holder 8093 */ 8094 if (type != SPR_TYPE_WR_EX_AR 8095 && type != SPR_TYPE_EX_AC_AR) 8096 lun->pr_res_idx = residx; /* Res holder */ 8097 else 8098 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8099 8100 lun->flags |= CTL_LUN_PR_RESERVED; 8101 lun->res_type = type; 8102 8103 mtx_unlock(&softc->ctl_lock); 8104 8105 /* send msg to other side */ 8106 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8107 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8108 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8109 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8110 persis_io.pr.pr_info.res_type = type; 8111 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8112 &persis_io, sizeof(persis_io), 0)) > 8113 CTL_HA_STATUS_SUCCESS) { 8114 printf("CTL:Persis Out error returned from " 8115 "ctl_ha_msg_send %d\n", isc_retval); 8116 } 8117 } 8118 break; 8119 8120 case SPRO_RELEASE: 8121 mtx_lock(&softc->ctl_lock); 8122 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8123 /* No reservation exists return good status */ 8124 mtx_unlock(&softc->ctl_lock); 8125 goto done; 8126 } 8127 /* 8128 * Is this nexus a reservation holder? 8129 */ 8130 if (lun->pr_res_idx != residx 8131 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8132 /* 8133 * not a res holder return good status but 8134 * do nothing 8135 */ 8136 mtx_unlock(&softc->ctl_lock); 8137 goto done; 8138 } 8139 8140 if (lun->res_type != type) { 8141 mtx_unlock(&softc->ctl_lock); 8142 free(ctsio->kern_data_ptr, M_CTL); 8143 ctl_set_illegal_pr_release(ctsio); 8144 ctl_done((union ctl_io *)ctsio); 8145 return (CTL_RETVAL_COMPLETE); 8146 } 8147 8148 /* okay to release */ 8149 lun->flags &= ~CTL_LUN_PR_RESERVED; 8150 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8151 lun->res_type = 0; 8152 8153 /* 8154 * if this isn't an exclusive access 8155 * res generate UA for all other 8156 * registrants. 8157 */ 8158 if (type != SPR_TYPE_EX_AC 8159 && type != SPR_TYPE_WR_EX) { 8160 /* 8161 * temporarily unregister so we don't generate UA 8162 */ 8163 lun->per_res[residx].registered = 0; 8164 8165 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8166 if (lun->per_res[i+persis_offset].registered 8167 == 0) 8168 continue; 8169 lun->pending_sense[i].ua_pending |= 8170 CTL_UA_RES_RELEASE; 8171 } 8172 8173 lun->per_res[residx].registered = 1; 8174 } 8175 mtx_unlock(&softc->ctl_lock); 8176 /* Send msg to other side */ 8177 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8178 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8179 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8180 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8181 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8182 printf("CTL:Persis Out error returned from " 8183 "ctl_ha_msg_send %d\n", isc_retval); 8184 } 8185 break; 8186 8187 case SPRO_CLEAR: 8188 /* send msg to other side */ 8189 8190 mtx_lock(&softc->ctl_lock); 8191 lun->flags &= ~CTL_LUN_PR_RESERVED; 8192 lun->res_type = 0; 8193 lun->pr_key_count = 0; 8194 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8195 8196 8197 memset(&lun->per_res[residx].res_key, 8198 0, sizeof(lun->per_res[residx].res_key)); 8199 lun->per_res[residx].registered = 0; 8200 8201 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8202 if (lun->per_res[i].registered) { 8203 if (!persis_offset && i < CTL_MAX_INITIATORS) 8204 lun->pending_sense[i].ua_pending |= 8205 CTL_UA_RES_PREEMPT; 8206 else if (persis_offset && i >= persis_offset) 8207 lun->pending_sense[i-persis_offset 8208 ].ua_pending |= CTL_UA_RES_PREEMPT; 8209 8210 memset(&lun->per_res[i].res_key, 8211 0, sizeof(struct scsi_per_res_key)); 8212 lun->per_res[i].registered = 0; 8213 } 8214 lun->PRGeneration++; 8215 mtx_unlock(&softc->ctl_lock); 8216 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8217 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8218 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8219 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8220 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8221 printf("CTL:Persis Out error returned from " 8222 "ctl_ha_msg_send %d\n", isc_retval); 8223 } 8224 break; 8225 8226 case SPRO_PREEMPT: { 8227 int nretval; 8228 8229 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8230 residx, ctsio, cdb, param); 8231 if (nretval != 0) 8232 return (CTL_RETVAL_COMPLETE); 8233 break; 8234 } 8235 case SPRO_REG_MOVE: 8236 case SPRO_PRE_ABO: 8237 default: 8238 free(ctsio->kern_data_ptr, M_CTL); 8239 ctl_set_invalid_field(/*ctsio*/ ctsio, 8240 /*sks_valid*/ 1, 8241 /*command*/ 1, 8242 /*field*/ 1, 8243 /*bit_valid*/ 1, 8244 /*bit*/ 0); 8245 ctl_done((union ctl_io *)ctsio); 8246 return (CTL_RETVAL_COMPLETE); 8247 break; /* NOTREACHED */ 8248 } 8249 8250 done: 8251 free(ctsio->kern_data_ptr, M_CTL); 8252 ctl_set_success(ctsio); 8253 ctl_done((union ctl_io *)ctsio); 8254 8255 return (retval); 8256 } 8257 8258 /* 8259 * This routine is for handling a message from the other SC pertaining to 8260 * persistent reserve out. All the error checking will have been done 8261 * so only perorming the action need be done here to keep the two 8262 * in sync. 8263 */ 8264 static void 8265 ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8266 { 8267 struct ctl_lun *lun; 8268 struct ctl_softc *softc; 8269 int i; 8270 8271 softc = control_softc; 8272 8273 mtx_lock(&softc->ctl_lock); 8274 8275 lun = softc->ctl_luns[msg->hdr.nexus.targ_lun]; 8276 switch(msg->pr.pr_info.action) { 8277 case CTL_PR_REG_KEY: 8278 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8279 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8280 lun->pr_key_count++; 8281 } 8282 lun->PRGeneration++; 8283 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8284 msg->pr.pr_info.sa_res_key, 8285 sizeof(struct scsi_per_res_key)); 8286 break; 8287 8288 case CTL_PR_UNREG_KEY: 8289 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8290 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8291 0, sizeof(struct scsi_per_res_key)); 8292 lun->pr_key_count--; 8293 8294 /* XXX Need to see if the reservation has been released */ 8295 /* if so do we need to generate UA? */ 8296 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8297 lun->flags &= ~CTL_LUN_PR_RESERVED; 8298 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8299 8300 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8301 || lun->res_type == SPR_TYPE_EX_AC_RO) 8302 && lun->pr_key_count) { 8303 /* 8304 * If the reservation is a registrants 8305 * only type we need to generate a UA 8306 * for other registered inits. The 8307 * sense code should be RESERVATIONS 8308 * RELEASED 8309 */ 8310 8311 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8312 if (lun->per_res[i+ 8313 persis_offset].registered == 0) 8314 continue; 8315 8316 lun->pending_sense[i 8317 ].ua_pending |= 8318 CTL_UA_RES_RELEASE; 8319 } 8320 } 8321 lun->res_type = 0; 8322 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8323 if (lun->pr_key_count==0) { 8324 lun->flags &= ~CTL_LUN_PR_RESERVED; 8325 lun->res_type = 0; 8326 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8327 } 8328 } 8329 lun->PRGeneration++; 8330 break; 8331 8332 case CTL_PR_RESERVE: 8333 lun->flags |= CTL_LUN_PR_RESERVED; 8334 lun->res_type = msg->pr.pr_info.res_type; 8335 lun->pr_res_idx = msg->pr.pr_info.residx; 8336 8337 break; 8338 8339 case CTL_PR_RELEASE: 8340 /* 8341 * if this isn't an exclusive access res generate UA for all 8342 * other registrants. 8343 */ 8344 if (lun->res_type != SPR_TYPE_EX_AC 8345 && lun->res_type != SPR_TYPE_WR_EX) { 8346 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8347 if (lun->per_res[i+persis_offset].registered) 8348 lun->pending_sense[i].ua_pending |= 8349 CTL_UA_RES_RELEASE; 8350 } 8351 8352 lun->flags &= ~CTL_LUN_PR_RESERVED; 8353 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8354 lun->res_type = 0; 8355 break; 8356 8357 case CTL_PR_PREEMPT: 8358 ctl_pro_preempt_other(lun, msg); 8359 break; 8360 case CTL_PR_CLEAR: 8361 lun->flags &= ~CTL_LUN_PR_RESERVED; 8362 lun->res_type = 0; 8363 lun->pr_key_count = 0; 8364 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8365 8366 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8367 if (lun->per_res[i].registered == 0) 8368 continue; 8369 if (!persis_offset 8370 && i < CTL_MAX_INITIATORS) 8371 lun->pending_sense[i].ua_pending |= 8372 CTL_UA_RES_PREEMPT; 8373 else if (persis_offset 8374 && i >= persis_offset) 8375 lun->pending_sense[i-persis_offset].ua_pending|= 8376 CTL_UA_RES_PREEMPT; 8377 memset(&lun->per_res[i].res_key, 0, 8378 sizeof(struct scsi_per_res_key)); 8379 lun->per_res[i].registered = 0; 8380 } 8381 lun->PRGeneration++; 8382 break; 8383 } 8384 8385 mtx_unlock(&softc->ctl_lock); 8386 } 8387 8388 int 8389 ctl_read_write(struct ctl_scsiio *ctsio) 8390 { 8391 struct ctl_lun *lun; 8392 struct ctl_lba_len lbalen; 8393 uint64_t lba; 8394 uint32_t num_blocks; 8395 int reladdr, fua, dpo, ebp; 8396 int retval; 8397 int isread; 8398 8399 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8400 8401 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8402 8403 reladdr = 0; 8404 fua = 0; 8405 dpo = 0; 8406 ebp = 0; 8407 8408 retval = CTL_RETVAL_COMPLETE; 8409 8410 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8411 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8412 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8413 uint32_t residx; 8414 8415 /* 8416 * XXX KDM need a lock here. 8417 */ 8418 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8419 if ((lun->res_type == SPR_TYPE_EX_AC 8420 && residx != lun->pr_res_idx) 8421 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8422 || lun->res_type == SPR_TYPE_EX_AC_AR) 8423 && !lun->per_res[residx].registered)) { 8424 ctl_set_reservation_conflict(ctsio); 8425 ctl_done((union ctl_io *)ctsio); 8426 return (CTL_RETVAL_COMPLETE); 8427 } 8428 } 8429 8430 switch (ctsio->cdb[0]) { 8431 case READ_6: 8432 case WRITE_6: { 8433 struct scsi_rw_6 *cdb; 8434 8435 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8436 8437 lba = scsi_3btoul(cdb->addr); 8438 /* only 5 bits are valid in the most significant address byte */ 8439 lba &= 0x1fffff; 8440 num_blocks = cdb->length; 8441 /* 8442 * This is correct according to SBC-2. 8443 */ 8444 if (num_blocks == 0) 8445 num_blocks = 256; 8446 break; 8447 } 8448 case READ_10: 8449 case WRITE_10: { 8450 struct scsi_rw_10 *cdb; 8451 8452 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8453 8454 if (cdb->byte2 & SRW10_RELADDR) 8455 reladdr = 1; 8456 if (cdb->byte2 & SRW10_FUA) 8457 fua = 1; 8458 if (cdb->byte2 & SRW10_DPO) 8459 dpo = 1; 8460 8461 if ((cdb->opcode == WRITE_10) 8462 && (cdb->byte2 & SRW10_EBP)) 8463 ebp = 1; 8464 8465 lba = scsi_4btoul(cdb->addr); 8466 num_blocks = scsi_2btoul(cdb->length); 8467 break; 8468 } 8469 case WRITE_VERIFY_10: { 8470 struct scsi_write_verify_10 *cdb; 8471 8472 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8473 8474 /* 8475 * XXX KDM we should do actual write verify support at some 8476 * point. This is obviously fake, we're just translating 8477 * things to a write. So we don't even bother checking the 8478 * BYTCHK field, since we don't do any verification. If 8479 * the user asks for it, we'll just pretend we did it. 8480 */ 8481 if (cdb->byte2 & SWV_DPO) 8482 dpo = 1; 8483 8484 lba = scsi_4btoul(cdb->addr); 8485 num_blocks = scsi_2btoul(cdb->length); 8486 break; 8487 } 8488 case READ_12: 8489 case WRITE_12: { 8490 struct scsi_rw_12 *cdb; 8491 8492 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8493 8494 if (cdb->byte2 & SRW12_RELADDR) 8495 reladdr = 1; 8496 if (cdb->byte2 & SRW12_FUA) 8497 fua = 1; 8498 if (cdb->byte2 & SRW12_DPO) 8499 dpo = 1; 8500 lba = scsi_4btoul(cdb->addr); 8501 num_blocks = scsi_4btoul(cdb->length); 8502 break; 8503 } 8504 case WRITE_VERIFY_12: { 8505 struct scsi_write_verify_12 *cdb; 8506 8507 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8508 8509 if (cdb->byte2 & SWV_DPO) 8510 dpo = 1; 8511 8512 lba = scsi_4btoul(cdb->addr); 8513 num_blocks = scsi_4btoul(cdb->length); 8514 8515 break; 8516 } 8517 case READ_16: 8518 case WRITE_16: { 8519 struct scsi_rw_16 *cdb; 8520 8521 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8522 8523 if (cdb->byte2 & SRW12_RELADDR) 8524 reladdr = 1; 8525 if (cdb->byte2 & SRW12_FUA) 8526 fua = 1; 8527 if (cdb->byte2 & SRW12_DPO) 8528 dpo = 1; 8529 8530 lba = scsi_8btou64(cdb->addr); 8531 num_blocks = scsi_4btoul(cdb->length); 8532 break; 8533 } 8534 case WRITE_VERIFY_16: { 8535 struct scsi_write_verify_16 *cdb; 8536 8537 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8538 8539 if (cdb->byte2 & SWV_DPO) 8540 dpo = 1; 8541 8542 lba = scsi_8btou64(cdb->addr); 8543 num_blocks = scsi_4btoul(cdb->length); 8544 break; 8545 } 8546 default: 8547 /* 8548 * We got a command we don't support. This shouldn't 8549 * happen, commands should be filtered out above us. 8550 */ 8551 ctl_set_invalid_opcode(ctsio); 8552 ctl_done((union ctl_io *)ctsio); 8553 8554 return (CTL_RETVAL_COMPLETE); 8555 break; /* NOTREACHED */ 8556 } 8557 8558 /* 8559 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8560 * interesting for us, but if RAIDCore is in write-back mode, 8561 * getting it to do write-through for a particular transaction may 8562 * not be possible. 8563 */ 8564 /* 8565 * We don't support relative addressing. That also requires 8566 * supporting linked commands, which we don't do. 8567 */ 8568 if (reladdr != 0) { 8569 ctl_set_invalid_field(ctsio, 8570 /*sks_valid*/ 1, 8571 /*command*/ 1, 8572 /*field*/ 1, 8573 /*bit_valid*/ 1, 8574 /*bit*/ 0); 8575 ctl_done((union ctl_io *)ctsio); 8576 return (CTL_RETVAL_COMPLETE); 8577 } 8578 8579 /* 8580 * The first check is to make sure we're in bounds, the second 8581 * check is to catch wrap-around problems. If the lba + num blocks 8582 * is less than the lba, then we've wrapped around and the block 8583 * range is invalid anyway. 8584 */ 8585 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8586 || ((lba + num_blocks) < lba)) { 8587 ctl_set_lba_out_of_range(ctsio); 8588 ctl_done((union ctl_io *)ctsio); 8589 return (CTL_RETVAL_COMPLETE); 8590 } 8591 8592 /* 8593 * According to SBC-3, a transfer length of 0 is not an error. 8594 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8595 * translates to 256 blocks for those commands. 8596 */ 8597 if (num_blocks == 0) { 8598 ctl_set_success(ctsio); 8599 ctl_done((union ctl_io *)ctsio); 8600 return (CTL_RETVAL_COMPLETE); 8601 } 8602 8603 lbalen.lba = lba; 8604 lbalen.len = num_blocks; 8605 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8606 sizeof(lbalen)); 8607 8608 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8609 8610 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8611 8612 return (retval); 8613 } 8614 8615 int 8616 ctl_report_luns(struct ctl_scsiio *ctsio) 8617 { 8618 struct scsi_report_luns *cdb; 8619 struct scsi_report_luns_data *lun_data; 8620 struct ctl_lun *lun, *request_lun; 8621 int num_luns, retval; 8622 uint32_t alloc_len, lun_datalen; 8623 int num_filled, well_known; 8624 uint32_t initidx; 8625 8626 retval = CTL_RETVAL_COMPLETE; 8627 well_known = 0; 8628 8629 cdb = (struct scsi_report_luns *)ctsio->cdb; 8630 8631 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8632 8633 mtx_lock(&control_softc->ctl_lock); 8634 num_luns = control_softc->num_luns; 8635 mtx_unlock(&control_softc->ctl_lock); 8636 8637 switch (cdb->select_report) { 8638 case RPL_REPORT_DEFAULT: 8639 case RPL_REPORT_ALL: 8640 break; 8641 case RPL_REPORT_WELLKNOWN: 8642 well_known = 1; 8643 num_luns = 0; 8644 break; 8645 default: 8646 ctl_set_invalid_field(ctsio, 8647 /*sks_valid*/ 1, 8648 /*command*/ 1, 8649 /*field*/ 2, 8650 /*bit_valid*/ 0, 8651 /*bit*/ 0); 8652 ctl_done((union ctl_io *)ctsio); 8653 return (retval); 8654 break; /* NOTREACHED */ 8655 } 8656 8657 alloc_len = scsi_4btoul(cdb->length); 8658 /* 8659 * The initiator has to allocate at least 16 bytes for this request, 8660 * so he can at least get the header and the first LUN. Otherwise 8661 * we reject the request (per SPC-3 rev 14, section 6.21). 8662 */ 8663 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8664 sizeof(struct scsi_report_luns_lundata))) { 8665 ctl_set_invalid_field(ctsio, 8666 /*sks_valid*/ 1, 8667 /*command*/ 1, 8668 /*field*/ 6, 8669 /*bit_valid*/ 0, 8670 /*bit*/ 0); 8671 ctl_done((union ctl_io *)ctsio); 8672 return (retval); 8673 } 8674 8675 request_lun = (struct ctl_lun *) 8676 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8677 8678 lun_datalen = sizeof(*lun_data) + 8679 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8680 8681 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK); 8682 if (ctsio->kern_data_ptr == NULL) { 8683 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8684 ctsio->scsi_status = SCSI_STATUS_BUSY; 8685 ctl_done((union ctl_io *)ctsio); 8686 return (CTL_RETVAL_COMPLETE); 8687 } 8688 8689 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8690 ctsio->kern_sg_entries = 0; 8691 8692 if (lun_datalen < alloc_len) { 8693 ctsio->residual = alloc_len - lun_datalen; 8694 ctsio->kern_data_len = lun_datalen; 8695 ctsio->kern_total_len = lun_datalen; 8696 } else { 8697 ctsio->residual = 0; 8698 ctsio->kern_data_len = alloc_len; 8699 ctsio->kern_total_len = alloc_len; 8700 } 8701 ctsio->kern_data_resid = 0; 8702 ctsio->kern_rel_offset = 0; 8703 ctsio->kern_sg_entries = 0; 8704 8705 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8706 8707 memset(lun_data, 0, lun_datalen); 8708 8709 /* 8710 * We set this to the actual data length, regardless of how much 8711 * space we actually have to return results. If the user looks at 8712 * this value, he'll know whether or not he allocated enough space 8713 * and reissue the command if necessary. We don't support well 8714 * known logical units, so if the user asks for that, return none. 8715 */ 8716 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8717 8718 mtx_lock(&control_softc->ctl_lock); 8719 for (num_filled = 0, lun = STAILQ_FIRST(&control_softc->lun_list); 8720 (lun != NULL) && (num_filled < num_luns); 8721 lun = STAILQ_NEXT(lun, links)) { 8722 8723 if (lun->lun <= 0xff) { 8724 /* 8725 * Peripheral addressing method, bus number 0. 8726 */ 8727 lun_data->luns[num_filled].lundata[0] = 8728 RPL_LUNDATA_ATYP_PERIPH; 8729 lun_data->luns[num_filled].lundata[1] = lun->lun; 8730 num_filled++; 8731 } else if (lun->lun <= 0x3fff) { 8732 /* 8733 * Flat addressing method. 8734 */ 8735 lun_data->luns[num_filled].lundata[0] = 8736 RPL_LUNDATA_ATYP_FLAT | 8737 (lun->lun & RPL_LUNDATA_FLAT_LUN_MASK); 8738 #ifdef OLDCTLHEADERS 8739 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8740 (lun->lun & SRLD_BUS_LUN_MASK); 8741 #endif 8742 lun_data->luns[num_filled].lundata[1] = 8743 #ifdef OLDCTLHEADERS 8744 lun->lun >> SRLD_BUS_LUN_BITS; 8745 #endif 8746 lun->lun >> RPL_LUNDATA_FLAT_LUN_BITS; 8747 num_filled++; 8748 } else { 8749 printf("ctl_report_luns: bogus LUN number %jd, " 8750 "skipping\n", (intmax_t)lun->lun); 8751 } 8752 /* 8753 * According to SPC-3, rev 14 section 6.21: 8754 * 8755 * "The execution of a REPORT LUNS command to any valid and 8756 * installed logical unit shall clear the REPORTED LUNS DATA 8757 * HAS CHANGED unit attention condition for all logical 8758 * units of that target with respect to the requesting 8759 * initiator. A valid and installed logical unit is one 8760 * having a PERIPHERAL QUALIFIER of 000b in the standard 8761 * INQUIRY data (see 6.4.2)." 8762 * 8763 * If request_lun is NULL, the LUN this report luns command 8764 * was issued to is either disabled or doesn't exist. In that 8765 * case, we shouldn't clear any pending lun change unit 8766 * attention. 8767 */ 8768 if (request_lun != NULL) 8769 lun->pending_sense[initidx].ua_pending &= 8770 ~CTL_UA_LUN_CHANGE; 8771 } 8772 mtx_unlock(&control_softc->ctl_lock); 8773 8774 /* 8775 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8776 * this request. 8777 */ 8778 ctsio->scsi_status = SCSI_STATUS_OK; 8779 8780 ctsio->be_move_done = ctl_config_move_done; 8781 ctl_datamove((union ctl_io *)ctsio); 8782 8783 return (retval); 8784 } 8785 8786 int 8787 ctl_request_sense(struct ctl_scsiio *ctsio) 8788 { 8789 struct scsi_request_sense *cdb; 8790 struct scsi_sense_data *sense_ptr; 8791 struct ctl_lun *lun; 8792 uint32_t initidx; 8793 int have_error; 8794 scsi_sense_data_type sense_format; 8795 8796 cdb = (struct scsi_request_sense *)ctsio->cdb; 8797 8798 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8799 8800 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 8801 8802 /* 8803 * Determine which sense format the user wants. 8804 */ 8805 if (cdb->byte2 & SRS_DESC) 8806 sense_format = SSD_TYPE_DESC; 8807 else 8808 sense_format = SSD_TYPE_FIXED; 8809 8810 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 8811 if (ctsio->kern_data_ptr == NULL) { 8812 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8813 ctsio->scsi_status = SCSI_STATUS_BUSY; 8814 ctl_done((union ctl_io *)ctsio); 8815 return (CTL_RETVAL_COMPLETE); 8816 } 8817 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 8818 ctsio->kern_sg_entries = 0; 8819 8820 /* 8821 * struct scsi_sense_data, which is currently set to 256 bytes, is 8822 * larger than the largest allowed value for the length field in the 8823 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 8824 */ 8825 ctsio->residual = 0; 8826 ctsio->kern_data_len = cdb->length; 8827 ctsio->kern_total_len = cdb->length; 8828 8829 ctsio->kern_data_resid = 0; 8830 ctsio->kern_rel_offset = 0; 8831 ctsio->kern_sg_entries = 0; 8832 8833 /* 8834 * If we don't have a LUN, we don't have any pending sense. 8835 */ 8836 if (lun == NULL) 8837 goto no_sense; 8838 8839 have_error = 0; 8840 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8841 /* 8842 * Check for pending sense, and then for pending unit attentions. 8843 * Pending sense gets returned first, then pending unit attentions. 8844 */ 8845 mtx_lock(&lun->ctl_softc->ctl_lock); 8846 if (ctl_is_set(lun->have_ca, initidx)) { 8847 scsi_sense_data_type stored_format; 8848 8849 /* 8850 * Check to see which sense format was used for the stored 8851 * sense data. 8852 */ 8853 stored_format = scsi_sense_type( 8854 &lun->pending_sense[initidx].sense); 8855 8856 /* 8857 * If the user requested a different sense format than the 8858 * one we stored, then we need to convert it to the other 8859 * format. If we're going from descriptor to fixed format 8860 * sense data, we may lose things in translation, depending 8861 * on what options were used. 8862 * 8863 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 8864 * for some reason we'll just copy it out as-is. 8865 */ 8866 if ((stored_format == SSD_TYPE_FIXED) 8867 && (sense_format == SSD_TYPE_DESC)) 8868 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 8869 &lun->pending_sense[initidx].sense, 8870 (struct scsi_sense_data_desc *)sense_ptr); 8871 else if ((stored_format == SSD_TYPE_DESC) 8872 && (sense_format == SSD_TYPE_FIXED)) 8873 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 8874 &lun->pending_sense[initidx].sense, 8875 (struct scsi_sense_data_fixed *)sense_ptr); 8876 else 8877 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 8878 ctl_min(sizeof(*sense_ptr), 8879 sizeof(lun->pending_sense[initidx].sense))); 8880 8881 ctl_clear_mask(lun->have_ca, initidx); 8882 have_error = 1; 8883 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 8884 ctl_ua_type ua_type; 8885 8886 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 8887 sense_ptr, sense_format); 8888 if (ua_type != CTL_UA_NONE) { 8889 have_error = 1; 8890 /* We're reporting this UA, so clear it */ 8891 lun->pending_sense[initidx].ua_pending &= ~ua_type; 8892 } 8893 } 8894 mtx_unlock(&lun->ctl_softc->ctl_lock); 8895 8896 /* 8897 * We already have a pending error, return it. 8898 */ 8899 if (have_error != 0) { 8900 /* 8901 * We report the SCSI status as OK, since the status of the 8902 * request sense command itself is OK. 8903 */ 8904 ctsio->scsi_status = SCSI_STATUS_OK; 8905 8906 /* 8907 * We report 0 for the sense length, because we aren't doing 8908 * autosense in this case. We're reporting sense as 8909 * parameter data. 8910 */ 8911 ctsio->sense_len = 0; 8912 8913 ctsio->be_move_done = ctl_config_move_done; 8914 ctl_datamove((union ctl_io *)ctsio); 8915 8916 return (CTL_RETVAL_COMPLETE); 8917 } 8918 8919 no_sense: 8920 8921 /* 8922 * No sense information to report, so we report that everything is 8923 * okay. 8924 */ 8925 ctl_set_sense_data(sense_ptr, 8926 lun, 8927 sense_format, 8928 /*current_error*/ 1, 8929 /*sense_key*/ SSD_KEY_NO_SENSE, 8930 /*asc*/ 0x00, 8931 /*ascq*/ 0x00, 8932 SSD_ELEM_NONE); 8933 8934 ctsio->scsi_status = SCSI_STATUS_OK; 8935 8936 /* 8937 * We report 0 for the sense length, because we aren't doing 8938 * autosense in this case. We're reporting sense as parameter data. 8939 */ 8940 ctsio->sense_len = 0; 8941 ctsio->be_move_done = ctl_config_move_done; 8942 ctl_datamove((union ctl_io *)ctsio); 8943 8944 return (CTL_RETVAL_COMPLETE); 8945 } 8946 8947 int 8948 ctl_tur(struct ctl_scsiio *ctsio) 8949 { 8950 struct ctl_lun *lun; 8951 8952 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8953 8954 CTL_DEBUG_PRINT(("ctl_tur\n")); 8955 8956 if (lun == NULL) 8957 return (-EINVAL); 8958 8959 ctsio->scsi_status = SCSI_STATUS_OK; 8960 ctsio->io_hdr.status = CTL_SUCCESS; 8961 8962 ctl_done((union ctl_io *)ctsio); 8963 8964 return (CTL_RETVAL_COMPLETE); 8965 } 8966 8967 #ifdef notyet 8968 static int 8969 ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 8970 { 8971 8972 } 8973 #endif 8974 8975 static int 8976 ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 8977 { 8978 struct scsi_vpd_supported_pages *pages; 8979 int sup_page_size; 8980 struct ctl_lun *lun; 8981 8982 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8983 8984 sup_page_size = sizeof(struct scsi_vpd_supported_pages) + 8985 SCSI_EVPD_NUM_SUPPORTED_PAGES; 8986 /* 8987 * XXX KDM GFP_??? We probably don't want to wait here, 8988 * unless we end up having a process/thread context. 8989 */ 8990 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK); 8991 if (ctsio->kern_data_ptr == NULL) { 8992 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8993 ctsio->scsi_status = SCSI_STATUS_BUSY; 8994 ctl_done((union ctl_io *)ctsio); 8995 return (CTL_RETVAL_COMPLETE); 8996 } 8997 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 8998 ctsio->kern_sg_entries = 0; 8999 9000 if (sup_page_size < alloc_len) { 9001 ctsio->residual = alloc_len - sup_page_size; 9002 ctsio->kern_data_len = sup_page_size; 9003 ctsio->kern_total_len = sup_page_size; 9004 } else { 9005 ctsio->residual = 0; 9006 ctsio->kern_data_len = alloc_len; 9007 ctsio->kern_total_len = alloc_len; 9008 } 9009 ctsio->kern_data_resid = 0; 9010 ctsio->kern_rel_offset = 0; 9011 ctsio->kern_sg_entries = 0; 9012 9013 memset(pages, 0, sup_page_size); 9014 9015 /* 9016 * The control device is always connected. The disk device, on the 9017 * other hand, may not be online all the time. Need to change this 9018 * to figure out whether the disk device is actually online or not. 9019 */ 9020 if (lun != NULL) 9021 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9022 lun->be_lun->lun_type; 9023 else 9024 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9025 9026 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9027 /* Supported VPD pages */ 9028 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9029 /* Serial Number */ 9030 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9031 /* Device Identification */ 9032 pages->page_list[2] = SVPD_DEVICE_ID; 9033 9034 ctsio->scsi_status = SCSI_STATUS_OK; 9035 9036 ctsio->be_move_done = ctl_config_move_done; 9037 ctl_datamove((union ctl_io *)ctsio); 9038 9039 return (CTL_RETVAL_COMPLETE); 9040 } 9041 9042 static int 9043 ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9044 { 9045 struct scsi_vpd_unit_serial_number *sn_ptr; 9046 struct ctl_lun *lun; 9047 #ifndef CTL_USE_BACKEND_SN 9048 char tmpstr[32]; 9049 #endif 9050 9051 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9052 9053 /* XXX KDM which malloc flags here?? */ 9054 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK); 9055 if (ctsio->kern_data_ptr == NULL) { 9056 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9057 ctsio->scsi_status = SCSI_STATUS_BUSY; 9058 ctl_done((union ctl_io *)ctsio); 9059 return (CTL_RETVAL_COMPLETE); 9060 } 9061 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9062 ctsio->kern_sg_entries = 0; 9063 9064 if (sizeof(*sn_ptr) < alloc_len) { 9065 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9066 ctsio->kern_data_len = sizeof(*sn_ptr); 9067 ctsio->kern_total_len = sizeof(*sn_ptr); 9068 } else { 9069 ctsio->residual = 0; 9070 ctsio->kern_data_len = alloc_len; 9071 ctsio->kern_total_len = alloc_len; 9072 } 9073 ctsio->kern_data_resid = 0; 9074 ctsio->kern_rel_offset = 0; 9075 ctsio->kern_sg_entries = 0; 9076 9077 memset(sn_ptr, 0, sizeof(*sn_ptr)); 9078 9079 /* 9080 * The control device is always connected. The disk device, on the 9081 * other hand, may not be online all the time. Need to change this 9082 * to figure out whether the disk device is actually online or not. 9083 */ 9084 if (lun != NULL) 9085 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9086 lun->be_lun->lun_type; 9087 else 9088 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9089 9090 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9091 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9092 #ifdef CTL_USE_BACKEND_SN 9093 /* 9094 * If we don't have a LUN, we just leave the serial number as 9095 * all spaces. 9096 */ 9097 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9098 if (lun != NULL) { 9099 strncpy((char *)sn_ptr->serial_num, 9100 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9101 } 9102 #else 9103 /* 9104 * Note that we're using a non-unique serial number here, 9105 */ 9106 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9107 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9108 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9109 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9110 #endif 9111 ctsio->scsi_status = SCSI_STATUS_OK; 9112 9113 ctsio->be_move_done = ctl_config_move_done; 9114 ctl_datamove((union ctl_io *)ctsio); 9115 9116 return (CTL_RETVAL_COMPLETE); 9117 } 9118 9119 9120 static int 9121 ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9122 { 9123 struct scsi_vpd_device_id *devid_ptr; 9124 struct scsi_vpd_id_descriptor *desc, *desc1; 9125 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9126 struct scsi_vpd_id_t10 *t10id; 9127 struct ctl_softc *ctl_softc; 9128 struct ctl_lun *lun; 9129 struct ctl_frontend *fe; 9130 #ifndef CTL_USE_BACKEND_SN 9131 char tmpstr[32]; 9132 #endif /* CTL_USE_BACKEND_SN */ 9133 int devid_len; 9134 9135 ctl_softc = control_softc; 9136 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9137 9138 devid_len = sizeof(struct scsi_vpd_device_id) + 9139 sizeof(struct scsi_vpd_id_descriptor) + 9140 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9141 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9142 sizeof(struct scsi_vpd_id_descriptor) + 9143 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9144 sizeof(struct scsi_vpd_id_descriptor) + 9145 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9146 9147 /* XXX KDM which malloc flags here ?? */ 9148 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK); 9149 if (ctsio->kern_data_ptr == NULL) { 9150 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9151 ctsio->scsi_status = SCSI_STATUS_BUSY; 9152 ctl_done((union ctl_io *)ctsio); 9153 return (CTL_RETVAL_COMPLETE); 9154 } 9155 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9156 ctsio->kern_sg_entries = 0; 9157 9158 if (devid_len < alloc_len) { 9159 ctsio->residual = alloc_len - devid_len; 9160 ctsio->kern_data_len = devid_len; 9161 ctsio->kern_total_len = devid_len; 9162 } else { 9163 ctsio->residual = 0; 9164 ctsio->kern_data_len = alloc_len; 9165 ctsio->kern_total_len = alloc_len; 9166 } 9167 ctsio->kern_data_resid = 0; 9168 ctsio->kern_rel_offset = 0; 9169 ctsio->kern_sg_entries = 0; 9170 9171 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9172 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9173 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9174 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9175 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9176 CTL_WWPN_LEN); 9177 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9178 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9179 memset(devid_ptr, 0, devid_len); 9180 9181 /* 9182 * The control device is always connected. The disk device, on the 9183 * other hand, may not be online all the time. 9184 */ 9185 if (lun != NULL) 9186 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9187 lun->be_lun->lun_type; 9188 else 9189 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9190 9191 devid_ptr->page_code = SVPD_DEVICE_ID; 9192 9193 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9194 9195 mtx_lock(&ctl_softc->ctl_lock); 9196 9197 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9198 9199 /* 9200 * For Fibre channel, 9201 */ 9202 if (fe->port_type == CTL_PORT_FC) 9203 { 9204 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9205 SVPD_ID_CODESET_ASCII; 9206 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9207 SVPD_ID_CODESET_BINARY; 9208 } 9209 else 9210 { 9211 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9212 SVPD_ID_CODESET_ASCII; 9213 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9214 SVPD_ID_CODESET_BINARY; 9215 } 9216 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9217 mtx_unlock(&ctl_softc->ctl_lock); 9218 9219 /* 9220 * We're using a LUN association here. i.e., this device ID is a 9221 * per-LUN identifier. 9222 */ 9223 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9224 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9225 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9226 9227 /* 9228 * desc1 is for the WWPN which is a port asscociation. 9229 */ 9230 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9231 desc1->length = CTL_WWPN_LEN; 9232 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9233 /* For testing just create the WWPN */ 9234 #if 0 9235 ddb_GetWWNN((char *)desc1->identifier); 9236 9237 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9238 /* This is so Copancontrol will return something sane */ 9239 if (ctsio->io_hdr.nexus.targ_port!=0 && 9240 ctsio->io_hdr.nexus.targ_port!=8) 9241 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9242 else 9243 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9244 #endif 9245 9246 be64enc(desc1->identifier, fe->wwpn); 9247 9248 /* 9249 * desc2 is for the Relative Target Port(type 4h) identifier 9250 */ 9251 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9252 | SVPD_ID_TYPE_RELTARG; 9253 desc2->length = 4; 9254 //#if 0 9255 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9256 /* This is so Copancontrol will return something sane */ 9257 if (ctsio->io_hdr.nexus.targ_port!=0 && 9258 ctsio->io_hdr.nexus.targ_port!=8) 9259 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9260 else 9261 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9262 //#endif 9263 9264 /* 9265 * desc3 is for the Target Port Group(type 5h) identifier 9266 */ 9267 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9268 | SVPD_ID_TYPE_TPORTGRP; 9269 desc3->length = 4; 9270 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9271 desc3->identifier[3] = 1; 9272 else 9273 desc3->identifier[3] = 2; 9274 9275 #ifdef CTL_USE_BACKEND_SN 9276 /* 9277 * If we've actually got a backend, copy the device id from the 9278 * per-LUN data. Otherwise, set it to all spaces. 9279 */ 9280 if (lun != NULL) { 9281 /* 9282 * Copy the backend's LUN ID. 9283 */ 9284 strncpy((char *)t10id->vendor_spec_id, 9285 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9286 } else { 9287 /* 9288 * No backend, set this to spaces. 9289 */ 9290 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9291 } 9292 #else 9293 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9294 (lun != NULL) ? (int)lun->lun : 0); 9295 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9296 sizeof(tmpstr))); 9297 #endif 9298 9299 ctsio->scsi_status = SCSI_STATUS_OK; 9300 9301 ctsio->be_move_done = ctl_config_move_done; 9302 ctl_datamove((union ctl_io *)ctsio); 9303 9304 return (CTL_RETVAL_COMPLETE); 9305 } 9306 9307 static int 9308 ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9309 { 9310 struct scsi_inquiry *cdb; 9311 int alloc_len, retval; 9312 9313 cdb = (struct scsi_inquiry *)ctsio->cdb; 9314 9315 retval = CTL_RETVAL_COMPLETE; 9316 9317 alloc_len = scsi_2btoul(cdb->length); 9318 9319 switch (cdb->page_code) { 9320 case SVPD_SUPPORTED_PAGES: 9321 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9322 break; 9323 case SVPD_UNIT_SERIAL_NUMBER: 9324 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9325 break; 9326 case SVPD_DEVICE_ID: 9327 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9328 break; 9329 default: 9330 ctl_set_invalid_field(ctsio, 9331 /*sks_valid*/ 1, 9332 /*command*/ 1, 9333 /*field*/ 2, 9334 /*bit_valid*/ 0, 9335 /*bit*/ 0); 9336 ctl_done((union ctl_io *)ctsio); 9337 retval = CTL_RETVAL_COMPLETE; 9338 break; 9339 } 9340 9341 return (retval); 9342 } 9343 9344 static int 9345 ctl_inquiry_std(struct ctl_scsiio *ctsio) 9346 { 9347 struct scsi_inquiry_data *inq_ptr; 9348 struct scsi_inquiry *cdb; 9349 struct ctl_softc *ctl_softc; 9350 struct ctl_lun *lun; 9351 uint32_t alloc_len; 9352 int is_fc; 9353 9354 ctl_softc = control_softc; 9355 9356 /* 9357 * Figure out whether we're talking to a Fibre Channel port or not. 9358 * We treat the ioctl front end, and any SCSI adapters, as packetized 9359 * SCSI front ends. 9360 */ 9361 mtx_lock(&ctl_softc->ctl_lock); 9362 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9363 CTL_PORT_FC) 9364 is_fc = 0; 9365 else 9366 is_fc = 1; 9367 mtx_unlock(&ctl_softc->ctl_lock); 9368 9369 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9370 cdb = (struct scsi_inquiry *)ctsio->cdb; 9371 alloc_len = scsi_2btoul(cdb->length); 9372 9373 /* 9374 * We malloc the full inquiry data size here and fill it 9375 * in. If the user only asks for less, we'll give him 9376 * that much. 9377 */ 9378 /* XXX KDM what malloc flags should we use here?? */ 9379 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK); 9380 if (ctsio->kern_data_ptr == NULL) { 9381 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9382 ctsio->scsi_status = SCSI_STATUS_BUSY; 9383 ctl_done((union ctl_io *)ctsio); 9384 return (CTL_RETVAL_COMPLETE); 9385 } 9386 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9387 ctsio->kern_sg_entries = 0; 9388 ctsio->kern_data_resid = 0; 9389 ctsio->kern_rel_offset = 0; 9390 9391 if (sizeof(*inq_ptr) < alloc_len) { 9392 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9393 ctsio->kern_data_len = sizeof(*inq_ptr); 9394 ctsio->kern_total_len = sizeof(*inq_ptr); 9395 } else { 9396 ctsio->residual = 0; 9397 ctsio->kern_data_len = alloc_len; 9398 ctsio->kern_total_len = alloc_len; 9399 } 9400 9401 memset(inq_ptr, 0, sizeof(*inq_ptr)); 9402 9403 /* 9404 * If we have a LUN configured, report it as connected. Otherwise, 9405 * report that it is offline or no device is supported, depending 9406 * on the value of inquiry_pq_no_lun. 9407 * 9408 * According to the spec (SPC-4 r34), the peripheral qualifier 9409 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9410 * 9411 * "A peripheral device having the specified peripheral device type 9412 * is not connected to this logical unit. However, the device 9413 * server is capable of supporting the specified peripheral device 9414 * type on this logical unit." 9415 * 9416 * According to the same spec, the peripheral qualifier 9417 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9418 * 9419 * "The device server is not capable of supporting a peripheral 9420 * device on this logical unit. For this peripheral qualifier the 9421 * peripheral device type shall be set to 1Fh. All other peripheral 9422 * device type values are reserved for this peripheral qualifier." 9423 * 9424 * Given the text, it would seem that we probably want to report that 9425 * the LUN is offline here. There is no LUN connected, but we can 9426 * support a LUN at the given LUN number. 9427 * 9428 * In the real world, though, it sounds like things are a little 9429 * different: 9430 * 9431 * - Linux, when presented with a LUN with the offline peripheral 9432 * qualifier, will create an sg driver instance for it. So when 9433 * you attach it to CTL, you wind up with a ton of sg driver 9434 * instances. (One for every LUN that Linux bothered to probe.) 9435 * Linux does this despite the fact that it issues a REPORT LUNs 9436 * to LUN 0 to get the inventory of supported LUNs. 9437 * 9438 * - There is other anecdotal evidence (from Emulex folks) about 9439 * arrays that use the offline peripheral qualifier for LUNs that 9440 * are on the "passive" path in an active/passive array. 9441 * 9442 * So the solution is provide a hopefully reasonable default 9443 * (return bad/no LUN) and allow the user to change the behavior 9444 * with a tunable/sysctl variable. 9445 */ 9446 if (lun != NULL) 9447 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9448 lun->be_lun->lun_type; 9449 else if (ctl_softc->inquiry_pq_no_lun == 0) 9450 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9451 else 9452 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9453 9454 /* RMB in byte 2 is 0 */ 9455 inq_ptr->version = SCSI_REV_SPC3; 9456 9457 /* 9458 * According to SAM-3, even if a device only supports a single 9459 * level of LUN addressing, it should still set the HISUP bit: 9460 * 9461 * 4.9.1 Logical unit numbers overview 9462 * 9463 * All logical unit number formats described in this standard are 9464 * hierarchical in structure even when only a single level in that 9465 * hierarchy is used. The HISUP bit shall be set to one in the 9466 * standard INQUIRY data (see SPC-2) when any logical unit number 9467 * format described in this standard is used. Non-hierarchical 9468 * formats are outside the scope of this standard. 9469 * 9470 * Therefore we set the HiSup bit here. 9471 * 9472 * The reponse format is 2, per SPC-3. 9473 */ 9474 inq_ptr->response_format = SID_HiSup | 2; 9475 9476 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9477 CTL_DEBUG_PRINT(("additional_length = %d\n", 9478 inq_ptr->additional_length)); 9479 9480 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9481 /* 16 bit addressing */ 9482 if (is_fc == 0) 9483 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9484 /* XXX set the SID_MultiP bit here if we're actually going to 9485 respond on multiple ports */ 9486 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9487 9488 /* 16 bit data bus, synchronous transfers */ 9489 /* XXX these flags don't apply for FC */ 9490 if (is_fc == 0) 9491 inq_ptr->flags = SID_WBus16 | SID_Sync; 9492 /* 9493 * XXX KDM do we want to support tagged queueing on the control 9494 * device at all? 9495 */ 9496 if ((lun == NULL) 9497 || (lun->be_lun->lun_type != T_PROCESSOR)) 9498 inq_ptr->flags |= SID_CmdQue; 9499 /* 9500 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9501 * We have 8 bytes for the vendor name, and 16 bytes for the device 9502 * name and 4 bytes for the revision. 9503 */ 9504 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9505 if (lun == NULL) { 9506 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9507 } else { 9508 switch (lun->be_lun->lun_type) { 9509 case T_DIRECT: 9510 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9511 break; 9512 case T_PROCESSOR: 9513 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9514 break; 9515 default: 9516 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9517 break; 9518 } 9519 } 9520 9521 /* 9522 * XXX make this a macro somewhere so it automatically gets 9523 * incremented when we make changes. 9524 */ 9525 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9526 9527 /* 9528 * For parallel SCSI, we support double transition and single 9529 * transition clocking. We also support QAS (Quick Arbitration 9530 * and Selection) and Information Unit transfers on both the 9531 * control and array devices. 9532 */ 9533 if (is_fc == 0) 9534 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9535 SID_SPI_IUS; 9536 9537 /* SAM-3 */ 9538 scsi_ulto2b(0x0060, inq_ptr->version1); 9539 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9540 scsi_ulto2b(0x0300, inq_ptr->version2); 9541 if (is_fc) { 9542 /* FCP-2 ANSI INCITS.350:2003 */ 9543 scsi_ulto2b(0x0917, inq_ptr->version3); 9544 } else { 9545 /* SPI-4 ANSI INCITS.362:200x */ 9546 scsi_ulto2b(0x0B56, inq_ptr->version3); 9547 } 9548 9549 if (lun == NULL) { 9550 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9551 scsi_ulto2b(0x0320, inq_ptr->version4); 9552 } else { 9553 switch (lun->be_lun->lun_type) { 9554 case T_DIRECT: 9555 /* 9556 * SBC-2 (no version claimed) XXX should we claim a 9557 * version? 9558 */ 9559 scsi_ulto2b(0x0320, inq_ptr->version4); 9560 break; 9561 case T_PROCESSOR: 9562 default: 9563 break; 9564 } 9565 } 9566 9567 ctsio->scsi_status = SCSI_STATUS_OK; 9568 if (ctsio->kern_data_len > 0) { 9569 ctsio->be_move_done = ctl_config_move_done; 9570 ctl_datamove((union ctl_io *)ctsio); 9571 } else { 9572 ctsio->io_hdr.status = CTL_SUCCESS; 9573 ctl_done((union ctl_io *)ctsio); 9574 } 9575 9576 return (CTL_RETVAL_COMPLETE); 9577 } 9578 9579 int 9580 ctl_inquiry(struct ctl_scsiio *ctsio) 9581 { 9582 struct scsi_inquiry *cdb; 9583 int retval; 9584 9585 cdb = (struct scsi_inquiry *)ctsio->cdb; 9586 9587 retval = 0; 9588 9589 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9590 9591 /* 9592 * Right now, we don't support the CmdDt inquiry information. 9593 * This would be nice to support in the future. When we do 9594 * support it, we should change this test so that it checks to make 9595 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9596 */ 9597 #ifdef notyet 9598 if (((cdb->byte2 & SI_EVPD) 9599 && (cdb->byte2 & SI_CMDDT))) 9600 #endif 9601 if (cdb->byte2 & SI_CMDDT) { 9602 /* 9603 * Point to the SI_CMDDT bit. We might change this 9604 * when we support SI_CMDDT, but since both bits would be 9605 * "wrong", this should probably just stay as-is then. 9606 */ 9607 ctl_set_invalid_field(ctsio, 9608 /*sks_valid*/ 1, 9609 /*command*/ 1, 9610 /*field*/ 1, 9611 /*bit_valid*/ 1, 9612 /*bit*/ 1); 9613 ctl_done((union ctl_io *)ctsio); 9614 return (CTL_RETVAL_COMPLETE); 9615 } 9616 if (cdb->byte2 & SI_EVPD) 9617 retval = ctl_inquiry_evpd(ctsio); 9618 #ifdef notyet 9619 else if (cdb->byte2 & SI_CMDDT) 9620 retval = ctl_inquiry_cmddt(ctsio); 9621 #endif 9622 else 9623 retval = ctl_inquiry_std(ctsio); 9624 9625 return (retval); 9626 } 9627 9628 /* 9629 * For known CDB types, parse the LBA and length. 9630 */ 9631 static int 9632 ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9633 { 9634 if (io->io_hdr.io_type != CTL_IO_SCSI) 9635 return (1); 9636 9637 switch (io->scsiio.cdb[0]) { 9638 case READ_6: 9639 case WRITE_6: { 9640 struct scsi_rw_6 *cdb; 9641 9642 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9643 9644 *lba = scsi_3btoul(cdb->addr); 9645 /* only 5 bits are valid in the most significant address byte */ 9646 *lba &= 0x1fffff; 9647 *len = cdb->length; 9648 break; 9649 } 9650 case READ_10: 9651 case WRITE_10: { 9652 struct scsi_rw_10 *cdb; 9653 9654 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9655 9656 *lba = scsi_4btoul(cdb->addr); 9657 *len = scsi_2btoul(cdb->length); 9658 break; 9659 } 9660 case WRITE_VERIFY_10: { 9661 struct scsi_write_verify_10 *cdb; 9662 9663 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9664 9665 *lba = scsi_4btoul(cdb->addr); 9666 *len = scsi_2btoul(cdb->length); 9667 break; 9668 } 9669 case READ_12: 9670 case WRITE_12: { 9671 struct scsi_rw_12 *cdb; 9672 9673 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9674 9675 *lba = scsi_4btoul(cdb->addr); 9676 *len = scsi_4btoul(cdb->length); 9677 break; 9678 } 9679 case WRITE_VERIFY_12: { 9680 struct scsi_write_verify_12 *cdb; 9681 9682 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9683 9684 *lba = scsi_4btoul(cdb->addr); 9685 *len = scsi_4btoul(cdb->length); 9686 break; 9687 } 9688 case READ_16: 9689 case WRITE_16: { 9690 struct scsi_rw_16 *cdb; 9691 9692 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9693 9694 *lba = scsi_8btou64(cdb->addr); 9695 *len = scsi_4btoul(cdb->length); 9696 break; 9697 } 9698 case WRITE_VERIFY_16: { 9699 struct scsi_write_verify_16 *cdb; 9700 9701 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9702 9703 9704 *lba = scsi_8btou64(cdb->addr); 9705 *len = scsi_4btoul(cdb->length); 9706 break; 9707 } 9708 default: 9709 return (1); 9710 break; /* NOTREACHED */ 9711 } 9712 9713 return (0); 9714 } 9715 9716 static ctl_action 9717 ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 9718 { 9719 uint64_t endlba1, endlba2; 9720 9721 endlba1 = lba1 + len1 - 1; 9722 endlba2 = lba2 + len2 - 1; 9723 9724 if ((endlba1 < lba2) 9725 || (endlba2 < lba1)) 9726 return (CTL_ACTION_PASS); 9727 else 9728 return (CTL_ACTION_BLOCK); 9729 } 9730 9731 static ctl_action 9732 ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 9733 { 9734 uint64_t lba1, lba2; 9735 uint32_t len1, len2; 9736 int retval; 9737 9738 retval = ctl_get_lba_len(io1, &lba1, &len1); 9739 if (retval != 0) 9740 return (CTL_ACTION_ERROR); 9741 9742 retval = ctl_get_lba_len(io2, &lba2, &len2); 9743 if (retval != 0) 9744 return (CTL_ACTION_ERROR); 9745 9746 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 9747 } 9748 9749 static ctl_action 9750 ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 9751 { 9752 struct ctl_cmd_entry *pending_entry, *ooa_entry; 9753 ctl_serialize_action *serialize_row; 9754 9755 /* 9756 * The initiator attempted multiple untagged commands at the same 9757 * time. Can't do that. 9758 */ 9759 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9760 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9761 && ((pending_io->io_hdr.nexus.targ_port == 9762 ooa_io->io_hdr.nexus.targ_port) 9763 && (pending_io->io_hdr.nexus.initid.id == 9764 ooa_io->io_hdr.nexus.initid.id)) 9765 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9766 return (CTL_ACTION_OVERLAP); 9767 9768 /* 9769 * The initiator attempted to send multiple tagged commands with 9770 * the same ID. (It's fine if different initiators have the same 9771 * tag ID.) 9772 * 9773 * Even if all of those conditions are true, we don't kill the I/O 9774 * if the command ahead of us has been aborted. We won't end up 9775 * sending it to the FETD, and it's perfectly legal to resend a 9776 * command with the same tag number as long as the previous 9777 * instance of this tag number has been aborted somehow. 9778 */ 9779 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9780 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9781 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 9782 && ((pending_io->io_hdr.nexus.targ_port == 9783 ooa_io->io_hdr.nexus.targ_port) 9784 && (pending_io->io_hdr.nexus.initid.id == 9785 ooa_io->io_hdr.nexus.initid.id)) 9786 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9787 return (CTL_ACTION_OVERLAP_TAG); 9788 9789 /* 9790 * If we get a head of queue tag, SAM-3 says that we should 9791 * immediately execute it. 9792 * 9793 * What happens if this command would normally block for some other 9794 * reason? e.g. a request sense with a head of queue tag 9795 * immediately after a write. Normally that would block, but this 9796 * will result in its getting executed immediately... 9797 * 9798 * We currently return "pass" instead of "skip", so we'll end up 9799 * going through the rest of the queue to check for overlapped tags. 9800 * 9801 * XXX KDM check for other types of blockage first?? 9802 */ 9803 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9804 return (CTL_ACTION_PASS); 9805 9806 /* 9807 * Ordered tags have to block until all items ahead of them 9808 * have completed. If we get called with an ordered tag, we always 9809 * block, if something else is ahead of us in the queue. 9810 */ 9811 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 9812 return (CTL_ACTION_BLOCK); 9813 9814 /* 9815 * Simple tags get blocked until all head of queue and ordered tags 9816 * ahead of them have completed. I'm lumping untagged commands in 9817 * with simple tags here. XXX KDM is that the right thing to do? 9818 */ 9819 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9820 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 9821 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9822 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 9823 return (CTL_ACTION_BLOCK); 9824 9825 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 9826 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 9827 9828 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 9829 9830 switch (serialize_row[pending_entry->seridx]) { 9831 case CTL_SER_BLOCK: 9832 return (CTL_ACTION_BLOCK); 9833 break; /* NOTREACHED */ 9834 case CTL_SER_EXTENT: 9835 return (ctl_extent_check(pending_io, ooa_io)); 9836 break; /* NOTREACHED */ 9837 case CTL_SER_PASS: 9838 return (CTL_ACTION_PASS); 9839 break; /* NOTREACHED */ 9840 case CTL_SER_SKIP: 9841 return (CTL_ACTION_SKIP); 9842 break; 9843 default: 9844 panic("invalid serialization value %d", 9845 serialize_row[pending_entry->seridx]); 9846 break; /* NOTREACHED */ 9847 } 9848 9849 return (CTL_ACTION_ERROR); 9850 } 9851 9852 /* 9853 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 9854 * Assumptions: 9855 * - caller holds ctl_lock 9856 * - pending_io is generally either incoming, or on the blocked queue 9857 * - starting I/O is the I/O we want to start the check with. 9858 */ 9859 static ctl_action 9860 ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 9861 union ctl_io *starting_io) 9862 { 9863 union ctl_io *ooa_io; 9864 ctl_action action; 9865 9866 /* 9867 * Run back along the OOA queue, starting with the current 9868 * blocked I/O and going through every I/O before it on the 9869 * queue. If starting_io is NULL, we'll just end up returning 9870 * CTL_ACTION_PASS. 9871 */ 9872 for (ooa_io = starting_io; ooa_io != NULL; 9873 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 9874 ooa_links)){ 9875 9876 /* 9877 * This routine just checks to see whether 9878 * cur_blocked is blocked by ooa_io, which is ahead 9879 * of it in the queue. It doesn't queue/dequeue 9880 * cur_blocked. 9881 */ 9882 action = ctl_check_for_blockage(pending_io, ooa_io); 9883 switch (action) { 9884 case CTL_ACTION_BLOCK: 9885 case CTL_ACTION_OVERLAP: 9886 case CTL_ACTION_OVERLAP_TAG: 9887 case CTL_ACTION_SKIP: 9888 case CTL_ACTION_ERROR: 9889 return (action); 9890 break; /* NOTREACHED */ 9891 case CTL_ACTION_PASS: 9892 break; 9893 default: 9894 panic("invalid action %d", action); 9895 break; /* NOTREACHED */ 9896 } 9897 } 9898 9899 return (CTL_ACTION_PASS); 9900 } 9901 9902 /* 9903 * Assumptions: 9904 * - An I/O has just completed, and has been removed from the per-LUN OOA 9905 * queue, so some items on the blocked queue may now be unblocked. 9906 * - The caller holds ctl_softc->ctl_lock 9907 */ 9908 static int 9909 ctl_check_blocked(struct ctl_lun *lun) 9910 { 9911 union ctl_io *cur_blocked, *next_blocked; 9912 9913 /* 9914 * Run forward from the head of the blocked queue, checking each 9915 * entry against the I/Os prior to it on the OOA queue to see if 9916 * there is still any blockage. 9917 * 9918 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 9919 * with our removing a variable on it while it is traversing the 9920 * list. 9921 */ 9922 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 9923 cur_blocked != NULL; cur_blocked = next_blocked) { 9924 union ctl_io *prev_ooa; 9925 ctl_action action; 9926 9927 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 9928 blocked_links); 9929 9930 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 9931 ctl_ooaq, ooa_links); 9932 9933 /* 9934 * If cur_blocked happens to be the first item in the OOA 9935 * queue now, prev_ooa will be NULL, and the action 9936 * returned will just be CTL_ACTION_PASS. 9937 */ 9938 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 9939 9940 switch (action) { 9941 case CTL_ACTION_BLOCK: 9942 /* Nothing to do here, still blocked */ 9943 break; 9944 case CTL_ACTION_OVERLAP: 9945 case CTL_ACTION_OVERLAP_TAG: 9946 /* 9947 * This shouldn't happen! In theory we've already 9948 * checked this command for overlap... 9949 */ 9950 break; 9951 case CTL_ACTION_PASS: 9952 case CTL_ACTION_SKIP: { 9953 struct ctl_softc *softc; 9954 struct ctl_cmd_entry *entry; 9955 uint32_t initidx; 9956 uint8_t opcode; 9957 int isc_retval; 9958 9959 /* 9960 * The skip case shouldn't happen, this transaction 9961 * should have never made it onto the blocked queue. 9962 */ 9963 /* 9964 * This I/O is no longer blocked, we can remove it 9965 * from the blocked queue. Since this is a TAILQ 9966 * (doubly linked list), we can do O(1) removals 9967 * from any place on the list. 9968 */ 9969 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 9970 blocked_links); 9971 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 9972 9973 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 9974 /* 9975 * Need to send IO back to original side to 9976 * run 9977 */ 9978 union ctl_ha_msg msg_info; 9979 9980 msg_info.hdr.original_sc = 9981 cur_blocked->io_hdr.original_sc; 9982 msg_info.hdr.serializing_sc = cur_blocked; 9983 msg_info.hdr.msg_type = CTL_MSG_R2R; 9984 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 9985 &msg_info, sizeof(msg_info), 0)) > 9986 CTL_HA_STATUS_SUCCESS) { 9987 printf("CTL:Check Blocked error from " 9988 "ctl_ha_msg_send %d\n", 9989 isc_retval); 9990 } 9991 break; 9992 } 9993 opcode = cur_blocked->scsiio.cdb[0]; 9994 entry = &ctl_cmd_table[opcode]; 9995 softc = control_softc; 9996 9997 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 9998 9999 /* 10000 * Check this I/O for LUN state changes that may 10001 * have happened while this command was blocked. 10002 * The LUN state may have been changed by a command 10003 * ahead of us in the queue, so we need to re-check 10004 * for any states that can be caused by SCSI 10005 * commands. 10006 */ 10007 if (ctl_scsiio_lun_check(softc, lun, entry, 10008 &cur_blocked->scsiio) == 0) { 10009 cur_blocked->io_hdr.flags |= 10010 CTL_FLAG_IS_WAS_ON_RTR; 10011 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 10012 &cur_blocked->io_hdr, links); 10013 /* 10014 * In the non CTL_DONE_THREAD case, we need 10015 * to wake up the work thread here. When 10016 * we're processing completed requests from 10017 * the work thread context, we'll pop back 10018 * around and end up pulling things off the 10019 * RtR queue. When we aren't processing 10020 * things from the work thread context, 10021 * though, we won't ever check the RtR queue. 10022 * So we need to wake up the thread to clear 10023 * things off the queue. Otherwise this 10024 * transaction will just sit on the RtR queue 10025 * until a new I/O comes in. (Which may or 10026 * may not happen...) 10027 */ 10028 #ifndef CTL_DONE_THREAD 10029 ctl_wakeup_thread(); 10030 #endif 10031 } else 10032 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10033 break; 10034 } 10035 default: 10036 /* 10037 * This probably shouldn't happen -- we shouldn't 10038 * get CTL_ACTION_ERROR, or anything else. 10039 */ 10040 break; 10041 } 10042 } 10043 10044 return (CTL_RETVAL_COMPLETE); 10045 } 10046 10047 /* 10048 * This routine (with one exception) checks LUN flags that can be set by 10049 * commands ahead of us in the OOA queue. These flags have to be checked 10050 * when a command initially comes in, and when we pull a command off the 10051 * blocked queue and are preparing to execute it. The reason we have to 10052 * check these flags for commands on the blocked queue is that the LUN 10053 * state may have been changed by a command ahead of us while we're on the 10054 * blocked queue. 10055 * 10056 * Ordering is somewhat important with these checks, so please pay 10057 * careful attention to the placement of any new checks. 10058 */ 10059 static int 10060 ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10061 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10062 { 10063 int retval; 10064 10065 retval = 0; 10066 10067 /* 10068 * If this shelf is a secondary shelf controller, we have to reject 10069 * any media access commands. 10070 */ 10071 #if 0 10072 /* No longer needed for HA */ 10073 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10074 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10075 ctl_set_lun_standby(ctsio); 10076 retval = 1; 10077 goto bailout; 10078 } 10079 #endif 10080 10081 /* 10082 * Check for a reservation conflict. If this command isn't allowed 10083 * even on reserved LUNs, and if this initiator isn't the one who 10084 * reserved us, reject the command with a reservation conflict. 10085 */ 10086 if ((lun->flags & CTL_LUN_RESERVED) 10087 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10088 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10089 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10090 || (ctsio->io_hdr.nexus.targ_target.id != 10091 lun->rsv_nexus.targ_target.id)) { 10092 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10093 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10094 retval = 1; 10095 goto bailout; 10096 } 10097 } 10098 10099 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10100 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10101 uint32_t residx; 10102 10103 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10104 /* 10105 * if we aren't registered or it's a res holder type 10106 * reservation and this isn't the res holder then set a 10107 * conflict. 10108 * NOTE: Commands which might be allowed on write exclusive 10109 * type reservations are checked in the particular command 10110 * for a conflict. Read and SSU are the only ones. 10111 */ 10112 if (!lun->per_res[residx].registered 10113 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10114 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10115 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10116 retval = 1; 10117 goto bailout; 10118 } 10119 10120 } 10121 10122 if ((lun->flags & CTL_LUN_OFFLINE) 10123 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10124 ctl_set_lun_not_ready(ctsio); 10125 retval = 1; 10126 goto bailout; 10127 } 10128 10129 /* 10130 * If the LUN is stopped, see if this particular command is allowed 10131 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10132 */ 10133 if ((lun->flags & CTL_LUN_STOPPED) 10134 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10135 /* "Logical unit not ready, initializing cmd. required" */ 10136 ctl_set_lun_stopped(ctsio); 10137 retval = 1; 10138 goto bailout; 10139 } 10140 10141 if ((lun->flags & CTL_LUN_INOPERABLE) 10142 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10143 /* "Medium format corrupted" */ 10144 ctl_set_medium_format_corrupted(ctsio); 10145 retval = 1; 10146 goto bailout; 10147 } 10148 10149 bailout: 10150 return (retval); 10151 10152 } 10153 10154 static void 10155 ctl_failover_io(union ctl_io *io, int have_lock) 10156 { 10157 ctl_set_busy(&io->scsiio); 10158 ctl_done_lock(io, have_lock); 10159 } 10160 10161 static void 10162 ctl_failover(void) 10163 { 10164 struct ctl_lun *lun; 10165 struct ctl_softc *ctl_softc; 10166 union ctl_io *next_io, *pending_io; 10167 union ctl_io *io; 10168 int lun_idx; 10169 int i; 10170 10171 ctl_softc = control_softc; 10172 10173 mtx_lock(&ctl_softc->ctl_lock); 10174 /* 10175 * Remove any cmds from the other SC from the rtr queue. These 10176 * will obviously only be for LUNs for which we're the primary. 10177 * We can't send status or get/send data for these commands. 10178 * Since they haven't been executed yet, we can just remove them. 10179 * We'll either abort them or delete them below, depending on 10180 * which HA mode we're in. 10181 */ 10182 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10183 io != NULL; io = next_io) { 10184 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10185 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10186 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10187 ctl_io_hdr, links); 10188 } 10189 10190 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10191 lun = ctl_softc->ctl_luns[lun_idx]; 10192 if (lun==NULL) 10193 continue; 10194 10195 /* 10196 * Processor LUNs are primary on both sides. 10197 * XXX will this always be true? 10198 */ 10199 if (lun->be_lun->lun_type == T_PROCESSOR) 10200 continue; 10201 10202 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10203 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10204 printf("FAILOVER: primary lun %d\n", lun_idx); 10205 /* 10206 * Remove all commands from the other SC. First from the 10207 * blocked queue then from the ooa queue. Once we have 10208 * removed them. Call ctl_check_blocked to see if there 10209 * is anything that can run. 10210 */ 10211 for (io = (union ctl_io *)TAILQ_FIRST( 10212 &lun->blocked_queue); io != NULL; io = next_io) { 10213 10214 next_io = (union ctl_io *)TAILQ_NEXT( 10215 &io->io_hdr, blocked_links); 10216 10217 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10218 TAILQ_REMOVE(&lun->blocked_queue, 10219 &io->io_hdr,blocked_links); 10220 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10221 TAILQ_REMOVE(&lun->ooa_queue, 10222 &io->io_hdr, ooa_links); 10223 10224 ctl_free_io_internal(io, 1); 10225 } 10226 } 10227 10228 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10229 io != NULL; io = next_io) { 10230 10231 next_io = (union ctl_io *)TAILQ_NEXT( 10232 &io->io_hdr, ooa_links); 10233 10234 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10235 10236 TAILQ_REMOVE(&lun->ooa_queue, 10237 &io->io_hdr, 10238 ooa_links); 10239 10240 ctl_free_io_internal(io, 1); 10241 } 10242 } 10243 ctl_check_blocked(lun); 10244 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10245 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10246 10247 printf("FAILOVER: primary lun %d\n", lun_idx); 10248 /* 10249 * Abort all commands from the other SC. We can't 10250 * send status back for them now. These should get 10251 * cleaned up when they are completed or come out 10252 * for a datamove operation. 10253 */ 10254 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10255 io != NULL; io = next_io) { 10256 next_io = (union ctl_io *)TAILQ_NEXT( 10257 &io->io_hdr, ooa_links); 10258 10259 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10260 io->io_hdr.flags |= CTL_FLAG_ABORT; 10261 } 10262 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10263 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10264 10265 printf("FAILOVER: secondary lun %d\n", lun_idx); 10266 10267 lun->flags |= CTL_LUN_PRIMARY_SC; 10268 10269 /* 10270 * We send all I/O that was sent to this controller 10271 * and redirected to the other side back with 10272 * busy status, and have the initiator retry it. 10273 * Figuring out how much data has been transferred, 10274 * etc. and picking up where we left off would be 10275 * very tricky. 10276 * 10277 * XXX KDM need to remove I/O from the blocked 10278 * queue as well! 10279 */ 10280 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10281 &lun->ooa_queue); pending_io != NULL; 10282 pending_io = next_io) { 10283 10284 next_io = (union ctl_io *)TAILQ_NEXT( 10285 &pending_io->io_hdr, ooa_links); 10286 10287 pending_io->io_hdr.flags &= 10288 ~CTL_FLAG_SENT_2OTHER_SC; 10289 10290 if (pending_io->io_hdr.flags & 10291 CTL_FLAG_IO_ACTIVE) { 10292 pending_io->io_hdr.flags |= 10293 CTL_FLAG_FAILOVER; 10294 } else { 10295 ctl_set_busy(&pending_io->scsiio); 10296 ctl_done_lock(pending_io, 10297 /*have_lock*/1); 10298 } 10299 } 10300 10301 /* 10302 * Build Unit Attention 10303 */ 10304 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10305 lun->pending_sense[i].ua_pending |= 10306 CTL_UA_ASYM_ACC_CHANGE; 10307 } 10308 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10309 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10310 printf("FAILOVER: secondary lun %d\n", lun_idx); 10311 /* 10312 * if the first io on the OOA is not on the RtR queue 10313 * add it. 10314 */ 10315 lun->flags |= CTL_LUN_PRIMARY_SC; 10316 10317 pending_io = (union ctl_io *)TAILQ_FIRST( 10318 &lun->ooa_queue); 10319 if (pending_io==NULL) { 10320 printf("Nothing on OOA queue\n"); 10321 continue; 10322 } 10323 10324 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10325 if ((pending_io->io_hdr.flags & 10326 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10327 pending_io->io_hdr.flags |= 10328 CTL_FLAG_IS_WAS_ON_RTR; 10329 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10330 &pending_io->io_hdr, links); 10331 } 10332 #if 0 10333 else 10334 { 10335 printf("Tag 0x%04x is running\n", 10336 pending_io->scsiio.tag_num); 10337 } 10338 #endif 10339 10340 next_io = (union ctl_io *)TAILQ_NEXT( 10341 &pending_io->io_hdr, ooa_links); 10342 for (pending_io=next_io; pending_io != NULL; 10343 pending_io = next_io) { 10344 pending_io->io_hdr.flags &= 10345 ~CTL_FLAG_SENT_2OTHER_SC; 10346 next_io = (union ctl_io *)TAILQ_NEXT( 10347 &pending_io->io_hdr, ooa_links); 10348 if (pending_io->io_hdr.flags & 10349 CTL_FLAG_IS_WAS_ON_RTR) { 10350 #if 0 10351 printf("Tag 0x%04x is running\n", 10352 pending_io->scsiio.tag_num); 10353 #endif 10354 continue; 10355 } 10356 10357 switch (ctl_check_ooa(lun, pending_io, 10358 (union ctl_io *)TAILQ_PREV( 10359 &pending_io->io_hdr, ctl_ooaq, 10360 ooa_links))) { 10361 10362 case CTL_ACTION_BLOCK: 10363 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10364 &pending_io->io_hdr, 10365 blocked_links); 10366 pending_io->io_hdr.flags |= 10367 CTL_FLAG_BLOCKED; 10368 break; 10369 case CTL_ACTION_PASS: 10370 case CTL_ACTION_SKIP: 10371 pending_io->io_hdr.flags |= 10372 CTL_FLAG_IS_WAS_ON_RTR; 10373 STAILQ_INSERT_TAIL( 10374 &ctl_softc->rtr_queue, 10375 &pending_io->io_hdr, links); 10376 break; 10377 case CTL_ACTION_OVERLAP: 10378 ctl_set_overlapped_cmd( 10379 (struct ctl_scsiio *)pending_io); 10380 ctl_done_lock(pending_io, 10381 /*have_lock*/ 1); 10382 break; 10383 case CTL_ACTION_OVERLAP_TAG: 10384 ctl_set_overlapped_tag( 10385 (struct ctl_scsiio *)pending_io, 10386 pending_io->scsiio.tag_num & 0xff); 10387 ctl_done_lock(pending_io, 10388 /*have_lock*/ 1); 10389 break; 10390 case CTL_ACTION_ERROR: 10391 default: 10392 ctl_set_internal_failure( 10393 (struct ctl_scsiio *)pending_io, 10394 0, // sks_valid 10395 0); //retry count 10396 ctl_done_lock(pending_io, 10397 /*have_lock*/ 1); 10398 break; 10399 } 10400 } 10401 10402 /* 10403 * Build Unit Attention 10404 */ 10405 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10406 lun->pending_sense[i].ua_pending |= 10407 CTL_UA_ASYM_ACC_CHANGE; 10408 } 10409 } else { 10410 panic("Unhandled HA mode failover, LUN flags = %#x, " 10411 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10412 } 10413 } 10414 ctl_pause_rtr = 0; 10415 mtx_unlock(&ctl_softc->ctl_lock); 10416 } 10417 10418 static int 10419 ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10420 { 10421 struct ctl_lun *lun; 10422 struct ctl_cmd_entry *entry; 10423 uint8_t opcode; 10424 uint32_t initidx; 10425 int retval; 10426 10427 retval = 0; 10428 10429 lun = NULL; 10430 10431 opcode = ctsio->cdb[0]; 10432 10433 mtx_lock(&ctl_softc->ctl_lock); 10434 10435 if ((ctsio->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10436 && (ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun] != NULL)) { 10437 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 10438 /* 10439 * If the LUN is invalid, pretend that it doesn't exist. 10440 * It will go away as soon as all pending I/O has been 10441 * completed. 10442 */ 10443 if (lun->flags & CTL_LUN_DISABLED) { 10444 lun = NULL; 10445 } else { 10446 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10447 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10448 lun->be_lun; 10449 if (lun->be_lun->lun_type == T_PROCESSOR) { 10450 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10451 } 10452 } 10453 } else { 10454 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10455 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10456 } 10457 10458 entry = &ctl_cmd_table[opcode]; 10459 10460 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10461 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10462 10463 /* 10464 * Check to see whether we can send this command to LUNs that don't 10465 * exist. This should pretty much only be the case for inquiry 10466 * and request sense. Further checks, below, really require having 10467 * a LUN, so we can't really check the command anymore. Just put 10468 * it on the rtr queue. 10469 */ 10470 if (lun == NULL) { 10471 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10472 goto queue_rtr; 10473 10474 ctl_set_unsupported_lun(ctsio); 10475 mtx_unlock(&ctl_softc->ctl_lock); 10476 ctl_done((union ctl_io *)ctsio); 10477 goto bailout; 10478 } else { 10479 /* 10480 * Every I/O goes into the OOA queue for a particular LUN, and 10481 * stays there until completion. 10482 */ 10483 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10484 10485 /* 10486 * Make sure we support this particular command on this LUN. 10487 * e.g., we don't support writes to the control LUN. 10488 */ 10489 switch (lun->be_lun->lun_type) { 10490 case T_PROCESSOR: 10491 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10492 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10493 == 0)) { 10494 ctl_set_invalid_opcode(ctsio); 10495 mtx_unlock(&ctl_softc->ctl_lock); 10496 ctl_done((union ctl_io *)ctsio); 10497 goto bailout; 10498 } 10499 break; 10500 case T_DIRECT: 10501 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10502 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10503 == 0)){ 10504 ctl_set_invalid_opcode(ctsio); 10505 mtx_unlock(&ctl_softc->ctl_lock); 10506 ctl_done((union ctl_io *)ctsio); 10507 goto bailout; 10508 } 10509 break; 10510 default: 10511 printf("Unsupported CTL LUN type %d\n", 10512 lun->be_lun->lun_type); 10513 panic("Unsupported CTL LUN type %d\n", 10514 lun->be_lun->lun_type); 10515 break; /* NOTREACHED */ 10516 } 10517 } 10518 10519 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10520 10521 /* 10522 * If we've got a request sense, it'll clear the contingent 10523 * allegiance condition. Otherwise, if we have a CA condition for 10524 * this initiator, clear it, because it sent down a command other 10525 * than request sense. 10526 */ 10527 if ((opcode != REQUEST_SENSE) 10528 && (ctl_is_set(lun->have_ca, initidx))) 10529 ctl_clear_mask(lun->have_ca, initidx); 10530 10531 /* 10532 * If the command has this flag set, it handles its own unit 10533 * attention reporting, we shouldn't do anything. Otherwise we 10534 * check for any pending unit attentions, and send them back to the 10535 * initiator. We only do this when a command initially comes in, 10536 * not when we pull it off the blocked queue. 10537 * 10538 * According to SAM-3, section 5.3.2, the order that things get 10539 * presented back to the host is basically unit attentions caused 10540 * by some sort of reset event, busy status, reservation conflicts 10541 * or task set full, and finally any other status. 10542 * 10543 * One issue here is that some of the unit attentions we report 10544 * don't fall into the "reset" category (e.g. "reported luns data 10545 * has changed"). So reporting it here, before the reservation 10546 * check, may be technically wrong. I guess the only thing to do 10547 * would be to check for and report the reset events here, and then 10548 * check for the other unit attention types after we check for a 10549 * reservation conflict. 10550 * 10551 * XXX KDM need to fix this 10552 */ 10553 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10554 ctl_ua_type ua_type; 10555 10556 ua_type = lun->pending_sense[initidx].ua_pending; 10557 if (ua_type != CTL_UA_NONE) { 10558 scsi_sense_data_type sense_format; 10559 10560 if (lun != NULL) 10561 sense_format = (lun->flags & 10562 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 10563 SSD_TYPE_FIXED; 10564 else 10565 sense_format = SSD_TYPE_FIXED; 10566 10567 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10568 sense_format); 10569 if (ua_type != CTL_UA_NONE) { 10570 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10571 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10572 CTL_AUTOSENSE; 10573 ctsio->sense_len = SSD_FULL_SIZE; 10574 lun->pending_sense[initidx].ua_pending &= 10575 ~ua_type; 10576 mtx_unlock(&ctl_softc->ctl_lock); 10577 ctl_done((union ctl_io *)ctsio); 10578 goto bailout; 10579 } 10580 } 10581 } 10582 10583 10584 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10585 mtx_unlock(&ctl_softc->ctl_lock); 10586 ctl_done((union ctl_io *)ctsio); 10587 goto bailout; 10588 } 10589 10590 /* 10591 * XXX CHD this is where we want to send IO to other side if 10592 * this LUN is secondary on this SC. We will need to make a copy 10593 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10594 * the copy we send as FROM_OTHER. 10595 * We also need to stuff the address of the original IO so we can 10596 * find it easily. Something similar will need be done on the other 10597 * side so when we are done we can find the copy. 10598 */ 10599 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10600 union ctl_ha_msg msg_info; 10601 int isc_retval; 10602 10603 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10604 10605 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10606 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10607 #if 0 10608 printf("1. ctsio %p\n", ctsio); 10609 #endif 10610 msg_info.hdr.serializing_sc = NULL; 10611 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10612 msg_info.scsi.tag_num = ctsio->tag_num; 10613 msg_info.scsi.tag_type = ctsio->tag_type; 10614 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10615 10616 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10617 10618 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10619 (void *)&msg_info, sizeof(msg_info), 0)) > 10620 CTL_HA_STATUS_SUCCESS) { 10621 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10622 isc_retval); 10623 printf("CTL:opcode is %x\n",opcode); 10624 } else { 10625 #if 0 10626 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10627 #endif 10628 } 10629 10630 /* 10631 * XXX KDM this I/O is off the incoming queue, but hasn't 10632 * been inserted on any other queue. We may need to come 10633 * up with a holding queue while we wait for serialization 10634 * so that we have an idea of what we're waiting for from 10635 * the other side. 10636 */ 10637 goto bailout_unlock; 10638 } 10639 10640 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10641 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10642 ctl_ooaq, ooa_links))) { 10643 case CTL_ACTION_BLOCK: 10644 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10645 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10646 blocked_links); 10647 goto bailout_unlock; 10648 break; /* NOTREACHED */ 10649 case CTL_ACTION_PASS: 10650 case CTL_ACTION_SKIP: 10651 goto queue_rtr; 10652 break; /* NOTREACHED */ 10653 case CTL_ACTION_OVERLAP: 10654 ctl_set_overlapped_cmd(ctsio); 10655 mtx_unlock(&ctl_softc->ctl_lock); 10656 ctl_done((union ctl_io *)ctsio); 10657 goto bailout; 10658 break; /* NOTREACHED */ 10659 case CTL_ACTION_OVERLAP_TAG: 10660 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10661 mtx_unlock(&ctl_softc->ctl_lock); 10662 ctl_done((union ctl_io *)ctsio); 10663 goto bailout; 10664 break; /* NOTREACHED */ 10665 case CTL_ACTION_ERROR: 10666 default: 10667 ctl_set_internal_failure(ctsio, 10668 /*sks_valid*/ 0, 10669 /*retry_count*/ 0); 10670 mtx_unlock(&ctl_softc->ctl_lock); 10671 ctl_done((union ctl_io *)ctsio); 10672 goto bailout; 10673 break; /* NOTREACHED */ 10674 } 10675 10676 goto bailout_unlock; 10677 10678 queue_rtr: 10679 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10680 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10681 10682 bailout_unlock: 10683 mtx_unlock(&ctl_softc->ctl_lock); 10684 10685 bailout: 10686 return (retval); 10687 } 10688 10689 static int 10690 ctl_scsiio(struct ctl_scsiio *ctsio) 10691 { 10692 int retval; 10693 struct ctl_cmd_entry *entry; 10694 10695 retval = CTL_RETVAL_COMPLETE; 10696 10697 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10698 10699 entry = &ctl_cmd_table[ctsio->cdb[0]]; 10700 10701 /* 10702 * If this I/O has been aborted, just send it straight to 10703 * ctl_done() without executing it. 10704 */ 10705 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 10706 ctl_done((union ctl_io *)ctsio); 10707 goto bailout; 10708 } 10709 10710 /* 10711 * All the checks should have been handled by ctl_scsiio_precheck(). 10712 * We should be clear now to just execute the I/O. 10713 */ 10714 retval = entry->execute(ctsio); 10715 10716 bailout: 10717 return (retval); 10718 } 10719 10720 /* 10721 * Since we only implement one target right now, a bus reset simply resets 10722 * our single target. 10723 */ 10724 static int 10725 ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 10726 { 10727 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 10728 } 10729 10730 static int 10731 ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 10732 ctl_ua_type ua_type) 10733 { 10734 struct ctl_lun *lun; 10735 int retval; 10736 10737 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 10738 union ctl_ha_msg msg_info; 10739 10740 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10741 msg_info.hdr.nexus = io->io_hdr.nexus; 10742 if (ua_type==CTL_UA_TARG_RESET) 10743 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 10744 else 10745 msg_info.task.task_action = CTL_TASK_BUS_RESET; 10746 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 10747 msg_info.hdr.original_sc = NULL; 10748 msg_info.hdr.serializing_sc = NULL; 10749 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10750 (void *)&msg_info, sizeof(msg_info), 0)) { 10751 } 10752 } 10753 retval = 0; 10754 10755 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 10756 retval += ctl_lun_reset(lun, io, ua_type); 10757 10758 return (retval); 10759 } 10760 10761 /* 10762 * The LUN should always be set. The I/O is optional, and is used to 10763 * distinguish between I/Os sent by this initiator, and by other 10764 * initiators. We set unit attention for initiators other than this one. 10765 * SAM-3 is vague on this point. It does say that a unit attention should 10766 * be established for other initiators when a LUN is reset (see section 10767 * 5.7.3), but it doesn't specifically say that the unit attention should 10768 * be established for this particular initiator when a LUN is reset. Here 10769 * is the relevant text, from SAM-3 rev 8: 10770 * 10771 * 5.7.2 When a SCSI initiator port aborts its own tasks 10772 * 10773 * When a SCSI initiator port causes its own task(s) to be aborted, no 10774 * notification that the task(s) have been aborted shall be returned to 10775 * the SCSI initiator port other than the completion response for the 10776 * command or task management function action that caused the task(s) to 10777 * be aborted and notification(s) associated with related effects of the 10778 * action (e.g., a reset unit attention condition). 10779 * 10780 * XXX KDM for now, we're setting unit attention for all initiators. 10781 */ 10782 static int 10783 ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 10784 { 10785 union ctl_io *xio; 10786 #if 0 10787 uint32_t initindex; 10788 #endif 10789 int i; 10790 10791 /* 10792 * Run through the OOA queue and abort each I/O. 10793 */ 10794 #if 0 10795 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10796 #endif 10797 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10798 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10799 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10800 } 10801 10802 /* 10803 * This version sets unit attention for every 10804 */ 10805 #if 0 10806 initindex = ctl_get_initindex(&io->io_hdr.nexus); 10807 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10808 if (initindex == i) 10809 continue; 10810 lun->pending_sense[i].ua_pending |= ua_type; 10811 } 10812 #endif 10813 10814 /* 10815 * A reset (any kind, really) clears reservations established with 10816 * RESERVE/RELEASE. It does not clear reservations established 10817 * with PERSISTENT RESERVE OUT, but we don't support that at the 10818 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 10819 * reservations made with the RESERVE/RELEASE commands, because 10820 * those commands are obsolete in SPC-3. 10821 */ 10822 lun->flags &= ~CTL_LUN_RESERVED; 10823 10824 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10825 ctl_clear_mask(lun->have_ca, i); 10826 lun->pending_sense[i].ua_pending |= ua_type; 10827 } 10828 10829 return (0); 10830 } 10831 10832 static int 10833 ctl_abort_task(union ctl_io *io) 10834 { 10835 union ctl_io *xio; 10836 struct ctl_lun *lun; 10837 struct ctl_softc *ctl_softc; 10838 #if 0 10839 struct sbuf sb; 10840 char printbuf[128]; 10841 #endif 10842 int found; 10843 10844 ctl_softc = control_softc; 10845 found = 0; 10846 10847 /* 10848 * Look up the LUN. 10849 */ 10850 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10851 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 10852 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 10853 else 10854 goto bailout; 10855 10856 #if 0 10857 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 10858 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 10859 #endif 10860 10861 /* 10862 * Run through the OOA queue and attempt to find the given I/O. 10863 * The target port, initiator ID, tag type and tag number have to 10864 * match the values that we got from the initiator. If we have an 10865 * untagged command to abort, simply abort the first untagged command 10866 * we come to. We only allow one untagged command at a time of course. 10867 */ 10868 #if 0 10869 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10870 #endif 10871 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10872 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10873 #if 0 10874 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 10875 10876 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 10877 lun->lun, xio->scsiio.tag_num, 10878 xio->scsiio.tag_type, 10879 (xio->io_hdr.blocked_links.tqe_prev 10880 == NULL) ? "" : " BLOCKED", 10881 (xio->io_hdr.flags & 10882 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 10883 (xio->io_hdr.flags & 10884 CTL_FLAG_ABORT) ? " ABORT" : ""), 10885 (xio->io_hdr.flags & 10886 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : ""); 10887 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 10888 sbuf_finish(&sb); 10889 printf("%s\n", sbuf_data(&sb)); 10890 #endif 10891 10892 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 10893 && (xio->io_hdr.nexus.initid.id == 10894 io->io_hdr.nexus.initid.id)) { 10895 /* 10896 * If the abort says that the task is untagged, the 10897 * task in the queue must be untagged. Otherwise, 10898 * we just check to see whether the tag numbers 10899 * match. This is because the QLogic firmware 10900 * doesn't pass back the tag type in an abort 10901 * request. 10902 */ 10903 #if 0 10904 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 10905 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 10906 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 10907 #endif 10908 /* 10909 * XXX KDM we've got problems with FC, because it 10910 * doesn't send down a tag type with aborts. So we 10911 * can only really go by the tag number... 10912 * This may cause problems with parallel SCSI. 10913 * Need to figure that out!! 10914 */ 10915 if (xio->scsiio.tag_num == io->taskio.tag_num) { 10916 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10917 found = 1; 10918 if ((io->io_hdr.flags & 10919 CTL_FLAG_FROM_OTHER_SC) == 0 && 10920 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 10921 union ctl_ha_msg msg_info; 10922 10923 io->io_hdr.flags |= 10924 CTL_FLAG_SENT_2OTHER_SC; 10925 msg_info.hdr.nexus = io->io_hdr.nexus; 10926 msg_info.task.task_action = 10927 CTL_TASK_ABORT_TASK; 10928 msg_info.task.tag_num = 10929 io->taskio.tag_num; 10930 msg_info.task.tag_type = 10931 io->taskio.tag_type; 10932 msg_info.hdr.msg_type = 10933 CTL_MSG_MANAGE_TASKS; 10934 msg_info.hdr.original_sc = NULL; 10935 msg_info.hdr.serializing_sc = NULL; 10936 #if 0 10937 printf("Sent Abort to other side\n"); 10938 #endif 10939 if (CTL_HA_STATUS_SUCCESS != 10940 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10941 (void *)&msg_info, 10942 sizeof(msg_info), 0)) { 10943 } 10944 } 10945 #if 0 10946 printf("ctl_abort_task: found I/O to abort\n"); 10947 #endif 10948 break; 10949 } 10950 } 10951 } 10952 10953 bailout: 10954 10955 if (found == 0) { 10956 /* 10957 * This isn't really an error. It's entirely possible for 10958 * the abort and command completion to cross on the wire. 10959 * This is more of an informative/diagnostic error. 10960 */ 10961 #if 0 10962 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 10963 "%d:%d:%d:%d tag %d type %d\n", 10964 io->io_hdr.nexus.initid.id, 10965 io->io_hdr.nexus.targ_port, 10966 io->io_hdr.nexus.targ_target.id, 10967 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 10968 io->taskio.tag_type); 10969 #endif 10970 return (1); 10971 } else 10972 return (0); 10973 } 10974 10975 /* 10976 * Assumptions: caller holds ctl_softc->ctl_lock 10977 * 10978 * This routine cannot block! It must be callable from an interrupt 10979 * handler as well as from the work thread. 10980 */ 10981 static void 10982 ctl_run_task_queue(struct ctl_softc *ctl_softc) 10983 { 10984 union ctl_io *io, *next_io; 10985 10986 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 10987 10988 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 10989 io != NULL; io = next_io) { 10990 int retval; 10991 const char *task_desc; 10992 10993 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10994 10995 retval = 0; 10996 10997 switch (io->io_hdr.io_type) { 10998 case CTL_IO_TASK: { 10999 task_desc = ctl_scsi_task_string(&io->taskio); 11000 if (task_desc != NULL) { 11001 #ifdef NEEDTOPORT 11002 csevent_log(CSC_CTL | CSC_SHELF_SW | 11003 CTL_TASK_REPORT, 11004 csevent_LogType_Trace, 11005 csevent_Severity_Information, 11006 csevent_AlertLevel_Green, 11007 csevent_FRU_Firmware, 11008 csevent_FRU_Unknown, 11009 "CTL: received task: %s",task_desc); 11010 #endif 11011 } else { 11012 #ifdef NEEDTOPORT 11013 csevent_log(CSC_CTL | CSC_SHELF_SW | 11014 CTL_TASK_REPORT, 11015 csevent_LogType_Trace, 11016 csevent_Severity_Information, 11017 csevent_AlertLevel_Green, 11018 csevent_FRU_Firmware, 11019 csevent_FRU_Unknown, 11020 "CTL: received unknown task " 11021 "type: %d (%#x)", 11022 io->taskio.task_action, 11023 io->taskio.task_action); 11024 #endif 11025 } 11026 switch (io->taskio.task_action) { 11027 case CTL_TASK_ABORT_TASK: 11028 retval = ctl_abort_task(io); 11029 break; 11030 case CTL_TASK_ABORT_TASK_SET: 11031 break; 11032 case CTL_TASK_CLEAR_ACA: 11033 break; 11034 case CTL_TASK_CLEAR_TASK_SET: 11035 break; 11036 case CTL_TASK_LUN_RESET: { 11037 struct ctl_lun *lun; 11038 uint32_t targ_lun; 11039 int retval; 11040 11041 targ_lun = io->io_hdr.nexus.targ_lun; 11042 11043 if ((targ_lun < CTL_MAX_LUNS) 11044 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11045 lun = ctl_softc->ctl_luns[targ_lun]; 11046 else { 11047 retval = 1; 11048 break; 11049 } 11050 11051 if (!(io->io_hdr.flags & 11052 CTL_FLAG_FROM_OTHER_SC)) { 11053 union ctl_ha_msg msg_info; 11054 11055 io->io_hdr.flags |= 11056 CTL_FLAG_SENT_2OTHER_SC; 11057 msg_info.hdr.msg_type = 11058 CTL_MSG_MANAGE_TASKS; 11059 msg_info.hdr.nexus = io->io_hdr.nexus; 11060 msg_info.task.task_action = 11061 CTL_TASK_LUN_RESET; 11062 msg_info.hdr.original_sc = NULL; 11063 msg_info.hdr.serializing_sc = NULL; 11064 if (CTL_HA_STATUS_SUCCESS != 11065 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11066 (void *)&msg_info, 11067 sizeof(msg_info), 0)) { 11068 } 11069 } 11070 11071 retval = ctl_lun_reset(lun, io, 11072 CTL_UA_LUN_RESET); 11073 break; 11074 } 11075 case CTL_TASK_TARGET_RESET: 11076 retval = ctl_target_reset(ctl_softc, io, 11077 CTL_UA_TARG_RESET); 11078 break; 11079 case CTL_TASK_BUS_RESET: 11080 retval = ctl_bus_reset(ctl_softc, io); 11081 break; 11082 case CTL_TASK_PORT_LOGIN: 11083 break; 11084 case CTL_TASK_PORT_LOGOUT: 11085 break; 11086 default: 11087 printf("ctl_run_task_queue: got unknown task " 11088 "management event %d\n", 11089 io->taskio.task_action); 11090 break; 11091 } 11092 if (retval == 0) 11093 io->io_hdr.status = CTL_SUCCESS; 11094 else 11095 io->io_hdr.status = CTL_ERROR; 11096 11097 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11098 ctl_io_hdr, links); 11099 /* 11100 * This will queue this I/O to the done queue, but the 11101 * work thread won't be able to process it until we 11102 * return and the lock is released. 11103 */ 11104 ctl_done_lock(io, /*have_lock*/ 1); 11105 break; 11106 } 11107 default: { 11108 11109 printf("%s: invalid I/O type %d msg %d cdb %x" 11110 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11111 __func__, io->io_hdr.io_type, 11112 io->io_hdr.msg_type, io->scsiio.cdb[0], 11113 (uintmax_t)io->io_hdr.nexus.initid.id, 11114 io->io_hdr.nexus.targ_port, 11115 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11116 io->io_hdr.nexus.targ_lun, 11117 (io->io_hdr.io_type == CTL_IO_TASK) ? 11118 io->taskio.tag_num : io->scsiio.tag_num); 11119 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11120 ctl_io_hdr, links); 11121 ctl_free_io_internal(io, 1); 11122 break; 11123 } 11124 } 11125 } 11126 11127 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11128 } 11129 11130 /* 11131 * For HA operation. Handle commands that come in from the other 11132 * controller. 11133 */ 11134 static void 11135 ctl_handle_isc(union ctl_io *io) 11136 { 11137 int free_io; 11138 struct ctl_lun *lun; 11139 struct ctl_softc *ctl_softc; 11140 11141 ctl_softc = control_softc; 11142 11143 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 11144 11145 switch (io->io_hdr.msg_type) { 11146 case CTL_MSG_SERIALIZE: 11147 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11148 /*have_lock*/ 0); 11149 break; 11150 case CTL_MSG_R2R: { 11151 uint8_t opcode; 11152 struct ctl_cmd_entry *entry; 11153 11154 /* 11155 * This is only used in SER_ONLY mode. 11156 */ 11157 free_io = 0; 11158 opcode = io->scsiio.cdb[0]; 11159 entry = &ctl_cmd_table[opcode]; 11160 mtx_lock(&ctl_softc->ctl_lock); 11161 if (ctl_scsiio_lun_check(ctl_softc, lun, 11162 entry, (struct ctl_scsiio *)io) != 0) { 11163 ctl_done_lock(io, /*have_lock*/ 1); 11164 mtx_unlock(&ctl_softc->ctl_lock); 11165 break; 11166 } 11167 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11168 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11169 &io->io_hdr, links); 11170 mtx_unlock(&ctl_softc->ctl_lock); 11171 break; 11172 } 11173 case CTL_MSG_FINISH_IO: 11174 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11175 free_io = 0; 11176 ctl_done_lock(io, /*have_lock*/ 0); 11177 } else { 11178 free_io = 1; 11179 mtx_lock(&ctl_softc->ctl_lock); 11180 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11181 ooa_links); 11182 STAILQ_REMOVE(&ctl_softc->task_queue, 11183 &io->io_hdr, ctl_io_hdr, links); 11184 ctl_check_blocked(lun); 11185 mtx_unlock(&ctl_softc->ctl_lock); 11186 } 11187 break; 11188 case CTL_MSG_PERS_ACTION: 11189 ctl_hndl_per_res_out_on_other_sc( 11190 (union ctl_ha_msg *)&io->presio.pr_msg); 11191 free_io = 1; 11192 break; 11193 case CTL_MSG_BAD_JUJU: 11194 free_io = 0; 11195 ctl_done_lock(io, /*have_lock*/ 0); 11196 break; 11197 case CTL_MSG_DATAMOVE: 11198 /* Only used in XFER mode */ 11199 free_io = 0; 11200 ctl_datamove_remote(io); 11201 break; 11202 case CTL_MSG_DATAMOVE_DONE: 11203 /* Only used in XFER mode */ 11204 free_io = 0; 11205 io->scsiio.be_move_done(io); 11206 break; 11207 default: 11208 free_io = 1; 11209 printf("%s: Invalid message type %d\n", 11210 __func__, io->io_hdr.msg_type); 11211 break; 11212 } 11213 if (free_io) 11214 ctl_free_io_internal(io, 0); 11215 11216 } 11217 11218 11219 /* 11220 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11221 * there is no match. 11222 */ 11223 static ctl_lun_error_pattern 11224 ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11225 { 11226 struct ctl_cmd_entry *entry; 11227 ctl_lun_error_pattern filtered_pattern, pattern; 11228 uint8_t opcode; 11229 11230 pattern = desc->error_pattern; 11231 11232 /* 11233 * XXX KDM we need more data passed into this function to match a 11234 * custom pattern, and we actually need to implement custom pattern 11235 * matching. 11236 */ 11237 if (pattern & CTL_LUN_PAT_CMD) 11238 return (CTL_LUN_PAT_CMD); 11239 11240 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11241 return (CTL_LUN_PAT_ANY); 11242 11243 opcode = ctsio->cdb[0]; 11244 entry = &ctl_cmd_table[opcode]; 11245 11246 filtered_pattern = entry->pattern & pattern; 11247 11248 /* 11249 * If the user requested specific flags in the pattern (e.g. 11250 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11251 * flags. 11252 * 11253 * If the user did not specify any flags, it doesn't matter whether 11254 * or not the command supports the flags. 11255 */ 11256 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11257 (pattern & ~CTL_LUN_PAT_MASK)) 11258 return (CTL_LUN_PAT_NONE); 11259 11260 /* 11261 * If the user asked for a range check, see if the requested LBA 11262 * range overlaps with this command's LBA range. 11263 */ 11264 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11265 uint64_t lba1; 11266 uint32_t len1; 11267 ctl_action action; 11268 int retval; 11269 11270 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11271 if (retval != 0) 11272 return (CTL_LUN_PAT_NONE); 11273 11274 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11275 desc->lba_range.len); 11276 /* 11277 * A "pass" means that the LBA ranges don't overlap, so 11278 * this doesn't match the user's range criteria. 11279 */ 11280 if (action == CTL_ACTION_PASS) 11281 return (CTL_LUN_PAT_NONE); 11282 } 11283 11284 return (filtered_pattern); 11285 } 11286 11287 /* 11288 * Called with the CTL lock held. 11289 */ 11290 static void 11291 ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11292 { 11293 struct ctl_error_desc *desc, *desc2; 11294 11295 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11296 ctl_lun_error_pattern pattern; 11297 /* 11298 * Check to see whether this particular command matches 11299 * the pattern in the descriptor. 11300 */ 11301 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11302 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11303 continue; 11304 11305 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11306 case CTL_LUN_INJ_ABORTED: 11307 ctl_set_aborted(&io->scsiio); 11308 break; 11309 case CTL_LUN_INJ_MEDIUM_ERR: 11310 ctl_set_medium_error(&io->scsiio); 11311 break; 11312 case CTL_LUN_INJ_UA: 11313 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11314 * OCCURRED */ 11315 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11316 break; 11317 case CTL_LUN_INJ_CUSTOM: 11318 /* 11319 * We're assuming the user knows what he is doing. 11320 * Just copy the sense information without doing 11321 * checks. 11322 */ 11323 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11324 ctl_min(sizeof(desc->custom_sense), 11325 sizeof(io->scsiio.sense_data))); 11326 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11327 io->scsiio.sense_len = SSD_FULL_SIZE; 11328 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11329 break; 11330 case CTL_LUN_INJ_NONE: 11331 default: 11332 /* 11333 * If this is an error injection type we don't know 11334 * about, clear the continuous flag (if it is set) 11335 * so it will get deleted below. 11336 */ 11337 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11338 break; 11339 } 11340 /* 11341 * By default, each error injection action is a one-shot 11342 */ 11343 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11344 continue; 11345 11346 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11347 11348 free(desc, M_CTL); 11349 } 11350 } 11351 11352 #ifdef CTL_IO_DELAY 11353 static void 11354 ctl_datamove_timer_wakeup(void *arg) 11355 { 11356 union ctl_io *io; 11357 11358 io = (union ctl_io *)arg; 11359 11360 ctl_datamove(io); 11361 } 11362 #endif /* CTL_IO_DELAY */ 11363 11364 /* 11365 * Assumption: caller does NOT hold ctl_lock 11366 */ 11367 void 11368 ctl_datamove(union ctl_io *io) 11369 { 11370 void (*fe_datamove)(union ctl_io *io); 11371 11372 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11373 11374 #ifdef CTL_TIME_IO 11375 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11376 char str[256]; 11377 char path_str[64]; 11378 struct sbuf sb; 11379 11380 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11381 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11382 11383 sbuf_cat(&sb, path_str); 11384 switch (io->io_hdr.io_type) { 11385 case CTL_IO_SCSI: 11386 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11387 sbuf_printf(&sb, "\n"); 11388 sbuf_cat(&sb, path_str); 11389 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11390 io->scsiio.tag_num, io->scsiio.tag_type); 11391 break; 11392 case CTL_IO_TASK: 11393 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11394 "Tag Type: %d\n", io->taskio.task_action, 11395 io->taskio.tag_num, io->taskio.tag_type); 11396 break; 11397 default: 11398 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11399 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11400 break; 11401 } 11402 sbuf_cat(&sb, path_str); 11403 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11404 (intmax_t)time_uptime - io->io_hdr.start_time); 11405 sbuf_finish(&sb); 11406 printf("%s", sbuf_data(&sb)); 11407 } 11408 #endif /* CTL_TIME_IO */ 11409 11410 mtx_lock(&control_softc->ctl_lock); 11411 #ifdef CTL_IO_DELAY 11412 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11413 struct ctl_lun *lun; 11414 11415 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11416 11417 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11418 } else { 11419 struct ctl_lun *lun; 11420 11421 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11422 if ((lun != NULL) 11423 && (lun->delay_info.datamove_delay > 0)) { 11424 struct callout *callout; 11425 11426 callout = (struct callout *)&io->io_hdr.timer_bytes; 11427 callout_init(callout, /*mpsafe*/ 1); 11428 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11429 callout_reset(callout, 11430 lun->delay_info.datamove_delay * hz, 11431 ctl_datamove_timer_wakeup, io); 11432 if (lun->delay_info.datamove_type == 11433 CTL_DELAY_TYPE_ONESHOT) 11434 lun->delay_info.datamove_delay = 0; 11435 mtx_unlock(&control_softc->ctl_lock); 11436 return; 11437 } 11438 } 11439 #endif 11440 /* 11441 * If we have any pending task management commands, process them 11442 * first. This is necessary to eliminate a race condition with the 11443 * FETD: 11444 * 11445 * - FETD submits a task management command, like an abort. 11446 * - Back end calls fe_datamove() to move the data for the aborted 11447 * command. The FETD can't really accept it, but if it did, it 11448 * would end up transmitting data for a command that the initiator 11449 * told us to abort. 11450 * 11451 * We close the race by processing all pending task management 11452 * commands here (we can't block!), and then check this I/O to see 11453 * if it has been aborted. If so, return it to the back end with 11454 * bad status, so the back end can say return an error to the back end 11455 * and then when the back end returns an error, we can return the 11456 * aborted command to the FETD, so it can clean up its resources. 11457 */ 11458 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11459 ctl_run_task_queue(control_softc); 11460 11461 /* 11462 * This command has been aborted. Set the port status, so we fail 11463 * the data move. 11464 */ 11465 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11466 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11467 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11468 io->io_hdr.nexus.targ_port, 11469 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11470 io->io_hdr.nexus.targ_lun); 11471 io->io_hdr.status = CTL_CMD_ABORTED; 11472 io->io_hdr.port_status = 31337; 11473 mtx_unlock(&control_softc->ctl_lock); 11474 /* 11475 * Note that the backend, in this case, will get the 11476 * callback in its context. In other cases it may get 11477 * called in the frontend's interrupt thread context. 11478 */ 11479 io->scsiio.be_move_done(io); 11480 return; 11481 } 11482 11483 /* 11484 * If we're in XFER mode and this I/O is from the other shelf 11485 * controller, we need to send the DMA to the other side to 11486 * actually transfer the data to/from the host. In serialize only 11487 * mode the transfer happens below CTL and ctl_datamove() is only 11488 * called on the machine that originally received the I/O. 11489 */ 11490 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11491 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11492 union ctl_ha_msg msg; 11493 uint32_t sg_entries_sent; 11494 int do_sg_copy; 11495 int i; 11496 11497 memset(&msg, 0, sizeof(msg)); 11498 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11499 msg.hdr.original_sc = io->io_hdr.original_sc; 11500 msg.hdr.serializing_sc = io; 11501 msg.hdr.nexus = io->io_hdr.nexus; 11502 msg.dt.flags = io->io_hdr.flags; 11503 /* 11504 * We convert everything into a S/G list here. We can't 11505 * pass by reference, only by value between controllers. 11506 * So we can't pass a pointer to the S/G list, only as many 11507 * S/G entries as we can fit in here. If it's possible for 11508 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11509 * then we need to break this up into multiple transfers. 11510 */ 11511 if (io->scsiio.kern_sg_entries == 0) { 11512 msg.dt.kern_sg_entries = 1; 11513 /* 11514 * If this is in cached memory, flush the cache 11515 * before we send the DMA request to the other 11516 * controller. We want to do this in either the 11517 * read or the write case. The read case is 11518 * straightforward. In the write case, we want to 11519 * make sure nothing is in the local cache that 11520 * could overwrite the DMAed data. 11521 */ 11522 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11523 /* 11524 * XXX KDM use bus_dmamap_sync() here. 11525 */ 11526 } 11527 11528 /* 11529 * Convert to a physical address if this is a 11530 * virtual address. 11531 */ 11532 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11533 msg.dt.sg_list[0].addr = 11534 io->scsiio.kern_data_ptr; 11535 } else { 11536 /* 11537 * XXX KDM use busdma here! 11538 */ 11539 #if 0 11540 msg.dt.sg_list[0].addr = (void *) 11541 vtophys(io->scsiio.kern_data_ptr); 11542 #endif 11543 } 11544 11545 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11546 do_sg_copy = 0; 11547 } else { 11548 struct ctl_sg_entry *sgl; 11549 11550 do_sg_copy = 1; 11551 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11552 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11553 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11554 /* 11555 * XXX KDM use bus_dmamap_sync() here. 11556 */ 11557 } 11558 } 11559 11560 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11561 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11562 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11563 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11564 msg.dt.sg_sequence = 0; 11565 11566 /* 11567 * Loop until we've sent all of the S/G entries. On the 11568 * other end, we'll recompose these S/G entries into one 11569 * contiguous list before passing it to the 11570 */ 11571 for (sg_entries_sent = 0; sg_entries_sent < 11572 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11573 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11574 sizeof(msg.dt.sg_list[0])), 11575 msg.dt.kern_sg_entries - sg_entries_sent); 11576 11577 if (do_sg_copy != 0) { 11578 struct ctl_sg_entry *sgl; 11579 int j; 11580 11581 sgl = (struct ctl_sg_entry *) 11582 io->scsiio.kern_data_ptr; 11583 /* 11584 * If this is in cached memory, flush the cache 11585 * before we send the DMA request to the other 11586 * controller. We want to do this in either 11587 * the * read or the write case. The read 11588 * case is straightforward. In the write 11589 * case, we want to make sure nothing is 11590 * in the local cache that could overwrite 11591 * the DMAed data. 11592 */ 11593 11594 for (i = sg_entries_sent, j = 0; 11595 i < msg.dt.cur_sg_entries; i++, j++) { 11596 if ((io->io_hdr.flags & 11597 CTL_FLAG_NO_DATASYNC) == 0) { 11598 /* 11599 * XXX KDM use bus_dmamap_sync() 11600 */ 11601 } 11602 if ((io->io_hdr.flags & 11603 CTL_FLAG_BUS_ADDR) == 0) { 11604 /* 11605 * XXX KDM use busdma. 11606 */ 11607 #if 0 11608 msg.dt.sg_list[j].addr =(void *) 11609 vtophys(sgl[i].addr); 11610 #endif 11611 } else { 11612 msg.dt.sg_list[j].addr = 11613 sgl[i].addr; 11614 } 11615 msg.dt.sg_list[j].len = sgl[i].len; 11616 } 11617 } 11618 11619 sg_entries_sent += msg.dt.cur_sg_entries; 11620 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11621 msg.dt.sg_last = 1; 11622 else 11623 msg.dt.sg_last = 0; 11624 11625 /* 11626 * XXX KDM drop and reacquire the lock here? 11627 */ 11628 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11629 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11630 /* 11631 * XXX do something here. 11632 */ 11633 } 11634 11635 msg.dt.sent_sg_entries = sg_entries_sent; 11636 } 11637 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11638 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11639 ctl_failover_io(io, /*have_lock*/ 1); 11640 11641 } else { 11642 11643 /* 11644 * Lookup the fe_datamove() function for this particular 11645 * front end. 11646 */ 11647 fe_datamove = 11648 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11649 mtx_unlock(&control_softc->ctl_lock); 11650 11651 fe_datamove(io); 11652 } 11653 } 11654 11655 static void 11656 ctl_send_datamove_done(union ctl_io *io, int have_lock) 11657 { 11658 union ctl_ha_msg msg; 11659 int isc_status; 11660 11661 memset(&msg, 0, sizeof(msg)); 11662 11663 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11664 msg.hdr.original_sc = io; 11665 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11666 msg.hdr.nexus = io->io_hdr.nexus; 11667 msg.hdr.status = io->io_hdr.status; 11668 msg.scsi.tag_num = io->scsiio.tag_num; 11669 msg.scsi.tag_type = io->scsiio.tag_type; 11670 msg.scsi.scsi_status = io->scsiio.scsi_status; 11671 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11672 sizeof(io->scsiio.sense_data)); 11673 msg.scsi.sense_len = io->scsiio.sense_len; 11674 msg.scsi.sense_residual = io->scsiio.sense_residual; 11675 msg.scsi.fetd_status = io->io_hdr.port_status; 11676 msg.scsi.residual = io->scsiio.residual; 11677 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11678 11679 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11680 ctl_failover_io(io, /*have_lock*/ have_lock); 11681 return; 11682 } 11683 11684 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11685 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11686 /* XXX do something if this fails */ 11687 } 11688 11689 } 11690 11691 /* 11692 * The DMA to the remote side is done, now we need to tell the other side 11693 * we're done so it can continue with its data movement. 11694 */ 11695 static void 11696 ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 11697 { 11698 union ctl_io *io; 11699 11700 io = rq->context; 11701 11702 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11703 printf("%s: ISC DMA write failed with error %d", __func__, 11704 rq->ret); 11705 ctl_set_internal_failure(&io->scsiio, 11706 /*sks_valid*/ 1, 11707 /*retry_count*/ rq->ret); 11708 } 11709 11710 ctl_dt_req_free(rq); 11711 11712 /* 11713 * In this case, we had to malloc the memory locally. Free it. 11714 */ 11715 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11716 int i; 11717 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11718 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11719 } 11720 /* 11721 * The data is in local and remote memory, so now we need to send 11722 * status (good or back) back to the other side. 11723 */ 11724 ctl_send_datamove_done(io, /*have_lock*/ 0); 11725 } 11726 11727 /* 11728 * We've moved the data from the host/controller into local memory. Now we 11729 * need to push it over to the remote controller's memory. 11730 */ 11731 static int 11732 ctl_datamove_remote_dm_write_cb(union ctl_io *io) 11733 { 11734 int retval; 11735 11736 retval = 0; 11737 11738 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 11739 ctl_datamove_remote_write_cb); 11740 11741 return (retval); 11742 } 11743 11744 static void 11745 ctl_datamove_remote_write(union ctl_io *io) 11746 { 11747 int retval; 11748 void (*fe_datamove)(union ctl_io *io); 11749 11750 /* 11751 * - Get the data from the host/HBA into local memory. 11752 * - DMA memory from the local controller to the remote controller. 11753 * - Send status back to the remote controller. 11754 */ 11755 11756 retval = ctl_datamove_remote_sgl_setup(io); 11757 if (retval != 0) 11758 return; 11759 11760 /* Switch the pointer over so the FETD knows what to do */ 11761 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11762 11763 /* 11764 * Use a custom move done callback, since we need to send completion 11765 * back to the other controller, not to the backend on this side. 11766 */ 11767 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 11768 11769 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11770 11771 fe_datamove(io); 11772 11773 return; 11774 11775 } 11776 11777 static int 11778 ctl_datamove_remote_dm_read_cb(union ctl_io *io) 11779 { 11780 #if 0 11781 char str[256]; 11782 char path_str[64]; 11783 struct sbuf sb; 11784 #endif 11785 11786 /* 11787 * In this case, we had to malloc the memory locally. Free it. 11788 */ 11789 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11790 int i; 11791 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11792 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11793 } 11794 11795 #if 0 11796 scsi_path_string(io, path_str, sizeof(path_str)); 11797 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11798 sbuf_cat(&sb, path_str); 11799 scsi_command_string(&io->scsiio, NULL, &sb); 11800 sbuf_printf(&sb, "\n"); 11801 sbuf_cat(&sb, path_str); 11802 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11803 io->scsiio.tag_num, io->scsiio.tag_type); 11804 sbuf_cat(&sb, path_str); 11805 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 11806 io->io_hdr.flags, io->io_hdr.status); 11807 sbuf_finish(&sb); 11808 printk("%s", sbuf_data(&sb)); 11809 #endif 11810 11811 11812 /* 11813 * The read is done, now we need to send status (good or bad) back 11814 * to the other side. 11815 */ 11816 ctl_send_datamove_done(io, /*have_lock*/ 0); 11817 11818 return (0); 11819 } 11820 11821 static void 11822 ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 11823 { 11824 union ctl_io *io; 11825 void (*fe_datamove)(union ctl_io *io); 11826 11827 io = rq->context; 11828 11829 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11830 printf("%s: ISC DMA read failed with error %d", __func__, 11831 rq->ret); 11832 ctl_set_internal_failure(&io->scsiio, 11833 /*sks_valid*/ 1, 11834 /*retry_count*/ rq->ret); 11835 } 11836 11837 ctl_dt_req_free(rq); 11838 11839 /* Switch the pointer over so the FETD knows what to do */ 11840 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11841 11842 /* 11843 * Use a custom move done callback, since we need to send completion 11844 * back to the other controller, not to the backend on this side. 11845 */ 11846 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 11847 11848 /* XXX KDM add checks like the ones in ctl_datamove? */ 11849 11850 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11851 11852 fe_datamove(io); 11853 } 11854 11855 static int 11856 ctl_datamove_remote_sgl_setup(union ctl_io *io) 11857 { 11858 struct ctl_sg_entry *local_sglist, *remote_sglist; 11859 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 11860 struct ctl_softc *softc; 11861 int retval; 11862 int i; 11863 11864 retval = 0; 11865 softc = control_softc; 11866 11867 local_sglist = io->io_hdr.local_sglist; 11868 local_dma_sglist = io->io_hdr.local_dma_sglist; 11869 remote_sglist = io->io_hdr.remote_sglist; 11870 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11871 11872 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 11873 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 11874 local_sglist[i].len = remote_sglist[i].len; 11875 11876 /* 11877 * XXX Detect the situation where the RS-level I/O 11878 * redirector on the other side has already read the 11879 * data off of the AOR RS on this side, and 11880 * transferred it to remote (mirror) memory on the 11881 * other side. Since we already have the data in 11882 * memory here, we just need to use it. 11883 * 11884 * XXX KDM this can probably be removed once we 11885 * get the cache device code in and take the 11886 * current AOR implementation out. 11887 */ 11888 #ifdef NEEDTOPORT 11889 if ((remote_sglist[i].addr >= 11890 (void *)vtophys(softc->mirr->addr)) 11891 && (remote_sglist[i].addr < 11892 ((void *)vtophys(softc->mirr->addr) + 11893 CacheMirrorOffset))) { 11894 local_sglist[i].addr = remote_sglist[i].addr - 11895 CacheMirrorOffset; 11896 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 11897 CTL_FLAG_DATA_IN) 11898 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 11899 } else { 11900 local_sglist[i].addr = remote_sglist[i].addr + 11901 CacheMirrorOffset; 11902 } 11903 #endif 11904 #if 0 11905 printf("%s: local %p, remote %p, len %d\n", 11906 __func__, local_sglist[i].addr, 11907 remote_sglist[i].addr, local_sglist[i].len); 11908 #endif 11909 } 11910 } else { 11911 uint32_t len_to_go; 11912 11913 /* 11914 * In this case, we don't have automatically allocated 11915 * memory for this I/O on this controller. This typically 11916 * happens with internal CTL I/O -- e.g. inquiry, mode 11917 * sense, etc. Anything coming from RAIDCore will have 11918 * a mirror area available. 11919 */ 11920 len_to_go = io->scsiio.kern_data_len; 11921 11922 /* 11923 * Clear the no datasync flag, we have to use malloced 11924 * buffers. 11925 */ 11926 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 11927 11928 /* 11929 * The difficult thing here is that the size of the various 11930 * S/G segments may be different than the size from the 11931 * remote controller. That'll make it harder when DMAing 11932 * the data back to the other side. 11933 */ 11934 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 11935 sizeof(io->io_hdr.remote_sglist[0])) && 11936 (len_to_go > 0); i++) { 11937 local_sglist[i].len = ctl_min(len_to_go, 131072); 11938 CTL_SIZE_8B(local_dma_sglist[i].len, 11939 local_sglist[i].len); 11940 local_sglist[i].addr = 11941 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 11942 11943 local_dma_sglist[i].addr = local_sglist[i].addr; 11944 11945 if (local_sglist[i].addr == NULL) { 11946 int j; 11947 11948 printf("malloc failed for %zd bytes!", 11949 local_dma_sglist[i].len); 11950 for (j = 0; j < i; j++) { 11951 free(local_sglist[j].addr, M_CTL); 11952 } 11953 ctl_set_internal_failure(&io->scsiio, 11954 /*sks_valid*/ 1, 11955 /*retry_count*/ 4857); 11956 retval = 1; 11957 goto bailout_error; 11958 11959 } 11960 /* XXX KDM do we need a sync here? */ 11961 11962 len_to_go -= local_sglist[i].len; 11963 } 11964 /* 11965 * Reset the number of S/G entries accordingly. The 11966 * original number of S/G entries is available in 11967 * rem_sg_entries. 11968 */ 11969 io->scsiio.kern_sg_entries = i; 11970 11971 #if 0 11972 printf("%s: kern_sg_entries = %d\n", __func__, 11973 io->scsiio.kern_sg_entries); 11974 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11975 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 11976 local_sglist[i].addr, local_sglist[i].len, 11977 local_dma_sglist[i].len); 11978 #endif 11979 } 11980 11981 11982 return (retval); 11983 11984 bailout_error: 11985 11986 ctl_send_datamove_done(io, /*have_lock*/ 0); 11987 11988 return (retval); 11989 } 11990 11991 static int 11992 ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 11993 ctl_ha_dt_cb callback) 11994 { 11995 struct ctl_ha_dt_req *rq; 11996 struct ctl_sg_entry *remote_sglist, *local_sglist; 11997 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 11998 uint32_t local_used, remote_used, total_used; 11999 int retval; 12000 int i, j; 12001 12002 retval = 0; 12003 12004 rq = ctl_dt_req_alloc(); 12005 12006 /* 12007 * If we failed to allocate the request, and if the DMA didn't fail 12008 * anyway, set busy status. This is just a resource allocation 12009 * failure. 12010 */ 12011 if ((rq == NULL) 12012 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12013 ctl_set_busy(&io->scsiio); 12014 12015 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12016 12017 if (rq != NULL) 12018 ctl_dt_req_free(rq); 12019 12020 /* 12021 * The data move failed. We need to return status back 12022 * to the other controller. No point in trying to DMA 12023 * data to the remote controller. 12024 */ 12025 12026 ctl_send_datamove_done(io, /*have_lock*/ 0); 12027 12028 retval = 1; 12029 12030 goto bailout; 12031 } 12032 12033 local_sglist = io->io_hdr.local_sglist; 12034 local_dma_sglist = io->io_hdr.local_dma_sglist; 12035 remote_sglist = io->io_hdr.remote_sglist; 12036 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12037 local_used = 0; 12038 remote_used = 0; 12039 total_used = 0; 12040 12041 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12042 rq->ret = CTL_HA_STATUS_SUCCESS; 12043 rq->context = io; 12044 callback(rq); 12045 goto bailout; 12046 } 12047 12048 /* 12049 * Pull/push the data over the wire from/to the other controller. 12050 * This takes into account the possibility that the local and 12051 * remote sglists may not be identical in terms of the size of 12052 * the elements and the number of elements. 12053 * 12054 * One fundamental assumption here is that the length allocated for 12055 * both the local and remote sglists is identical. Otherwise, we've 12056 * essentially got a coding error of some sort. 12057 */ 12058 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12059 int isc_ret; 12060 uint32_t cur_len, dma_length; 12061 uint8_t *tmp_ptr; 12062 12063 rq->id = CTL_HA_DATA_CTL; 12064 rq->command = command; 12065 rq->context = io; 12066 12067 /* 12068 * Both pointers should be aligned. But it is possible 12069 * that the allocation length is not. They should both 12070 * also have enough slack left over at the end, though, 12071 * to round up to the next 8 byte boundary. 12072 */ 12073 cur_len = ctl_min(local_sglist[i].len - local_used, 12074 remote_sglist[j].len - remote_used); 12075 12076 /* 12077 * In this case, we have a size issue and need to decrease 12078 * the size, except in the case where we actually have less 12079 * than 8 bytes left. In that case, we need to increase 12080 * the DMA length to get the last bit. 12081 */ 12082 if ((cur_len & 0x7) != 0) { 12083 if (cur_len > 0x7) { 12084 cur_len = cur_len - (cur_len & 0x7); 12085 dma_length = cur_len; 12086 } else { 12087 CTL_SIZE_8B(dma_length, cur_len); 12088 } 12089 12090 } else 12091 dma_length = cur_len; 12092 12093 /* 12094 * If we had to allocate memory for this I/O, instead of using 12095 * the non-cached mirror memory, we'll need to flush the cache 12096 * before trying to DMA to the other controller. 12097 * 12098 * We could end up doing this multiple times for the same 12099 * segment if we have a larger local segment than remote 12100 * segment. That shouldn't be an issue. 12101 */ 12102 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12103 /* 12104 * XXX KDM use bus_dmamap_sync() here. 12105 */ 12106 } 12107 12108 rq->size = dma_length; 12109 12110 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12111 tmp_ptr += local_used; 12112 12113 /* Use physical addresses when talking to ISC hardware */ 12114 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12115 /* XXX KDM use busdma */ 12116 #if 0 12117 rq->local = vtophys(tmp_ptr); 12118 #endif 12119 } else 12120 rq->local = tmp_ptr; 12121 12122 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12123 tmp_ptr += remote_used; 12124 rq->remote = tmp_ptr; 12125 12126 rq->callback = NULL; 12127 12128 local_used += cur_len; 12129 if (local_used >= local_sglist[i].len) { 12130 i++; 12131 local_used = 0; 12132 } 12133 12134 remote_used += cur_len; 12135 if (remote_used >= remote_sglist[j].len) { 12136 j++; 12137 remote_used = 0; 12138 } 12139 total_used += cur_len; 12140 12141 if (total_used >= io->scsiio.kern_data_len) 12142 rq->callback = callback; 12143 12144 if ((rq->size & 0x7) != 0) { 12145 printf("%s: warning: size %d is not on 8b boundary\n", 12146 __func__, rq->size); 12147 } 12148 if (((uintptr_t)rq->local & 0x7) != 0) { 12149 printf("%s: warning: local %p not on 8b boundary\n", 12150 __func__, rq->local); 12151 } 12152 if (((uintptr_t)rq->remote & 0x7) != 0) { 12153 printf("%s: warning: remote %p not on 8b boundary\n", 12154 __func__, rq->local); 12155 } 12156 #if 0 12157 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12158 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12159 rq->local, rq->remote, rq->size); 12160 #endif 12161 12162 isc_ret = ctl_dt_single(rq); 12163 if (isc_ret == CTL_HA_STATUS_WAIT) 12164 continue; 12165 12166 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12167 rq->ret = CTL_HA_STATUS_SUCCESS; 12168 } else { 12169 rq->ret = isc_ret; 12170 } 12171 callback(rq); 12172 goto bailout; 12173 } 12174 12175 bailout: 12176 return (retval); 12177 12178 } 12179 12180 static void 12181 ctl_datamove_remote_read(union ctl_io *io) 12182 { 12183 int retval; 12184 int i; 12185 12186 /* 12187 * This will send an error to the other controller in the case of a 12188 * failure. 12189 */ 12190 retval = ctl_datamove_remote_sgl_setup(io); 12191 if (retval != 0) 12192 return; 12193 12194 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12195 ctl_datamove_remote_read_cb); 12196 if ((retval != 0) 12197 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12198 /* 12199 * Make sure we free memory if there was an error.. The 12200 * ctl_datamove_remote_xfer() function will send the 12201 * datamove done message, or call the callback with an 12202 * error if there is a problem. 12203 */ 12204 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12205 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12206 } 12207 12208 return; 12209 } 12210 12211 /* 12212 * Process a datamove request from the other controller. This is used for 12213 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12214 * first. Once that is complete, the data gets DMAed into the remote 12215 * controller's memory. For reads, we DMA from the remote controller's 12216 * memory into our memory first, and then move it out to the FETD. 12217 * 12218 * Should be called without the ctl_lock held. 12219 */ 12220 static void 12221 ctl_datamove_remote(union ctl_io *io) 12222 { 12223 struct ctl_softc *softc; 12224 12225 softc = control_softc; 12226 12227 /* 12228 * Note that we look for an aborted I/O here, but don't do some of 12229 * the other checks that ctl_datamove() normally does. We don't 12230 * need to run the task queue, because this I/O is on the ISC 12231 * queue, which is executed by the work thread after the task queue. 12232 * We don't need to run the datamove delay code, since that should 12233 * have been done if need be on the other controller. 12234 */ 12235 mtx_lock(&softc->ctl_lock); 12236 12237 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12238 12239 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12240 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12241 io->io_hdr.nexus.targ_port, 12242 io->io_hdr.nexus.targ_target.id, 12243 io->io_hdr.nexus.targ_lun); 12244 io->io_hdr.status = CTL_CMD_ABORTED; 12245 io->io_hdr.port_status = 31338; 12246 12247 mtx_unlock(&softc->ctl_lock); 12248 12249 ctl_send_datamove_done(io, /*have_lock*/ 0); 12250 12251 return; 12252 } 12253 12254 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12255 mtx_unlock(&softc->ctl_lock); 12256 ctl_datamove_remote_write(io); 12257 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12258 mtx_unlock(&softc->ctl_lock); 12259 ctl_datamove_remote_read(io); 12260 } else { 12261 union ctl_ha_msg msg; 12262 struct scsi_sense_data *sense; 12263 uint8_t sks[3]; 12264 int retry_count; 12265 12266 memset(&msg, 0, sizeof(msg)); 12267 12268 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12269 msg.hdr.status = CTL_SCSI_ERROR; 12270 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12271 12272 retry_count = 4243; 12273 12274 sense = &msg.scsi.sense_data; 12275 sks[0] = SSD_SCS_VALID; 12276 sks[1] = (retry_count >> 8) & 0xff; 12277 sks[2] = retry_count & 0xff; 12278 12279 /* "Internal target failure" */ 12280 scsi_set_sense_data(sense, 12281 /*sense_format*/ SSD_TYPE_NONE, 12282 /*current_error*/ 1, 12283 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12284 /*asc*/ 0x44, 12285 /*ascq*/ 0x00, 12286 /*type*/ SSD_ELEM_SKS, 12287 /*size*/ sizeof(sks), 12288 /*data*/ sks, 12289 SSD_ELEM_NONE); 12290 12291 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12292 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12293 ctl_failover_io(io, /*have_lock*/ 1); 12294 mtx_unlock(&softc->ctl_lock); 12295 return; 12296 } 12297 12298 mtx_unlock(&softc->ctl_lock); 12299 12300 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12301 CTL_HA_STATUS_SUCCESS) { 12302 /* XXX KDM what to do if this fails? */ 12303 } 12304 return; 12305 } 12306 12307 } 12308 12309 static int 12310 ctl_process_done(union ctl_io *io, int have_lock) 12311 { 12312 struct ctl_lun *lun; 12313 struct ctl_softc *ctl_softc; 12314 void (*fe_done)(union ctl_io *io); 12315 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12316 12317 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12318 12319 fe_done = 12320 control_softc->ctl_ports[targ_port]->fe_done; 12321 12322 #ifdef CTL_TIME_IO 12323 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12324 char str[256]; 12325 char path_str[64]; 12326 struct sbuf sb; 12327 12328 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12329 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12330 12331 sbuf_cat(&sb, path_str); 12332 switch (io->io_hdr.io_type) { 12333 case CTL_IO_SCSI: 12334 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12335 sbuf_printf(&sb, "\n"); 12336 sbuf_cat(&sb, path_str); 12337 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12338 io->scsiio.tag_num, io->scsiio.tag_type); 12339 break; 12340 case CTL_IO_TASK: 12341 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12342 "Tag Type: %d\n", io->taskio.task_action, 12343 io->taskio.tag_num, io->taskio.tag_type); 12344 break; 12345 default: 12346 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12347 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12348 break; 12349 } 12350 sbuf_cat(&sb, path_str); 12351 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12352 (intmax_t)time_uptime - io->io_hdr.start_time); 12353 sbuf_finish(&sb); 12354 printf("%s", sbuf_data(&sb)); 12355 } 12356 #endif /* CTL_TIME_IO */ 12357 12358 switch (io->io_hdr.io_type) { 12359 case CTL_IO_SCSI: 12360 break; 12361 case CTL_IO_TASK: 12362 ctl_io_error_print(io, NULL); 12363 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12364 ctl_free_io_internal(io, /*have_lock*/ 0); 12365 else 12366 fe_done(io); 12367 return (CTL_RETVAL_COMPLETE); 12368 break; 12369 default: 12370 printf("ctl_process_done: invalid io type %d\n", 12371 io->io_hdr.io_type); 12372 panic("ctl_process_done: invalid io type %d\n", 12373 io->io_hdr.io_type); 12374 break; /* NOTREACHED */ 12375 } 12376 12377 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12378 if (lun == NULL) { 12379 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12380 io->io_hdr.nexus.targ_lun)); 12381 fe_done(io); 12382 goto bailout; 12383 } 12384 ctl_softc = lun->ctl_softc; 12385 12386 /* 12387 * Remove this from the OOA queue. 12388 */ 12389 if (have_lock == 0) 12390 mtx_lock(&ctl_softc->ctl_lock); 12391 12392 /* 12393 * Check to see if we have any errors to inject here. We only 12394 * inject errors for commands that don't already have errors set. 12395 */ 12396 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12397 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12398 ctl_inject_error(lun, io); 12399 12400 /* 12401 * XXX KDM how do we treat commands that aren't completed 12402 * successfully? 12403 * 12404 * XXX KDM should we also track I/O latency? 12405 */ 12406 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12407 uint32_t blocksize; 12408 #ifdef CTL_TIME_IO 12409 struct bintime cur_bt; 12410 #endif 12411 12412 if ((lun->be_lun != NULL) 12413 && (lun->be_lun->blocksize != 0)) 12414 blocksize = lun->be_lun->blocksize; 12415 else 12416 blocksize = 512; 12417 12418 switch (io->io_hdr.io_type) { 12419 case CTL_IO_SCSI: { 12420 int isread; 12421 struct ctl_lba_len lbalen; 12422 12423 isread = 0; 12424 switch (io->scsiio.cdb[0]) { 12425 case READ_6: 12426 case READ_10: 12427 case READ_12: 12428 case READ_16: 12429 isread = 1; 12430 /* FALLTHROUGH */ 12431 case WRITE_6: 12432 case WRITE_10: 12433 case WRITE_12: 12434 case WRITE_16: 12435 case WRITE_VERIFY_10: 12436 case WRITE_VERIFY_12: 12437 case WRITE_VERIFY_16: 12438 memcpy(&lbalen, io->io_hdr.ctl_private[ 12439 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12440 12441 if (isread) { 12442 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12443 lbalen.len * blocksize; 12444 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12445 12446 #ifdef CTL_TIME_IO 12447 bintime_add( 12448 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12449 &io->io_hdr.dma_bt); 12450 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12451 io->io_hdr.num_dmas; 12452 getbintime(&cur_bt); 12453 bintime_sub(&cur_bt, 12454 &io->io_hdr.start_bt); 12455 12456 bintime_add( 12457 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12458 &cur_bt); 12459 12460 #if 0 12461 cs_prof_gettime(&cur_ticks); 12462 lun->stats.time[CTL_STATS_READ] += 12463 cur_ticks - 12464 io->io_hdr.start_ticks; 12465 #endif 12466 #if 0 12467 lun->stats.time[CTL_STATS_READ] += 12468 jiffies - io->io_hdr.start_time; 12469 #endif 12470 #endif /* CTL_TIME_IO */ 12471 } else { 12472 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12473 lbalen.len * blocksize; 12474 lun->stats.ports[targ_port].operations[ 12475 CTL_STATS_WRITE]++; 12476 12477 #ifdef CTL_TIME_IO 12478 bintime_add( 12479 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12480 &io->io_hdr.dma_bt); 12481 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12482 io->io_hdr.num_dmas; 12483 getbintime(&cur_bt); 12484 bintime_sub(&cur_bt, 12485 &io->io_hdr.start_bt); 12486 12487 bintime_add( 12488 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12489 &cur_bt); 12490 #if 0 12491 cs_prof_gettime(&cur_ticks); 12492 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12493 cur_ticks - 12494 io->io_hdr.start_ticks; 12495 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12496 jiffies - io->io_hdr.start_time; 12497 #endif 12498 #endif /* CTL_TIME_IO */ 12499 } 12500 break; 12501 default: 12502 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12503 12504 #ifdef CTL_TIME_IO 12505 bintime_add( 12506 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12507 &io->io_hdr.dma_bt); 12508 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12509 io->io_hdr.num_dmas; 12510 getbintime(&cur_bt); 12511 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12512 12513 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12514 &cur_bt); 12515 12516 #if 0 12517 cs_prof_gettime(&cur_ticks); 12518 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12519 cur_ticks - 12520 io->io_hdr.start_ticks; 12521 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12522 jiffies - io->io_hdr.start_time; 12523 #endif 12524 #endif /* CTL_TIME_IO */ 12525 break; 12526 } 12527 break; 12528 } 12529 default: 12530 break; 12531 } 12532 } 12533 12534 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12535 12536 /* 12537 * Run through the blocked queue on this LUN and see if anything 12538 * has become unblocked, now that this transaction is done. 12539 */ 12540 ctl_check_blocked(lun); 12541 12542 /* 12543 * If the LUN has been invalidated, free it if there is nothing 12544 * left on its OOA queue. 12545 */ 12546 if ((lun->flags & CTL_LUN_INVALID) 12547 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12548 ctl_free_lun(lun); 12549 12550 /* 12551 * If this command has been aborted, make sure we set the status 12552 * properly. The FETD is responsible for freeing the I/O and doing 12553 * whatever it needs to do to clean up its state. 12554 */ 12555 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12556 io->io_hdr.status = CTL_CMD_ABORTED; 12557 12558 /* 12559 * We print out status for every task management command. For SCSI 12560 * commands, we filter out any unit attention errors; they happen 12561 * on every boot, and would clutter up the log. Note: task 12562 * management commands aren't printed here, they are printed above, 12563 * since they should never even make it down here. 12564 */ 12565 switch (io->io_hdr.io_type) { 12566 case CTL_IO_SCSI: { 12567 int error_code, sense_key, asc, ascq; 12568 12569 sense_key = 0; 12570 12571 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12572 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12573 /* 12574 * Since this is just for printing, no need to 12575 * show errors here. 12576 */ 12577 scsi_extract_sense_len(&io->scsiio.sense_data, 12578 io->scsiio.sense_len, 12579 &error_code, 12580 &sense_key, 12581 &asc, 12582 &ascq, 12583 /*show_errors*/ 0); 12584 } 12585 12586 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12587 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12588 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12589 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12590 12591 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12592 ctl_softc->skipped_prints++; 12593 if (have_lock == 0) 12594 mtx_unlock(&ctl_softc->ctl_lock); 12595 } else { 12596 uint32_t skipped_prints; 12597 12598 skipped_prints = ctl_softc->skipped_prints; 12599 12600 ctl_softc->skipped_prints = 0; 12601 ctl_softc->last_print_jiffies = time_uptime; 12602 12603 if (have_lock == 0) 12604 mtx_unlock(&ctl_softc->ctl_lock); 12605 if (skipped_prints > 0) { 12606 #ifdef NEEDTOPORT 12607 csevent_log(CSC_CTL | CSC_SHELF_SW | 12608 CTL_ERROR_REPORT, 12609 csevent_LogType_Trace, 12610 csevent_Severity_Information, 12611 csevent_AlertLevel_Green, 12612 csevent_FRU_Firmware, 12613 csevent_FRU_Unknown, 12614 "High CTL error volume, %d prints " 12615 "skipped", skipped_prints); 12616 #endif 12617 } 12618 ctl_io_error_print(io, NULL); 12619 } 12620 } else { 12621 if (have_lock == 0) 12622 mtx_unlock(&ctl_softc->ctl_lock); 12623 } 12624 break; 12625 } 12626 case CTL_IO_TASK: 12627 if (have_lock == 0) 12628 mtx_unlock(&ctl_softc->ctl_lock); 12629 ctl_io_error_print(io, NULL); 12630 break; 12631 default: 12632 if (have_lock == 0) 12633 mtx_unlock(&ctl_softc->ctl_lock); 12634 break; 12635 } 12636 12637 /* 12638 * Tell the FETD or the other shelf controller we're done with this 12639 * command. Note that only SCSI commands get to this point. Task 12640 * management commands are completed above. 12641 * 12642 * We only send status to the other controller if we're in XFER 12643 * mode. In SER_ONLY mode, the I/O is done on the controller that 12644 * received the I/O (from CTL's perspective), and so the status is 12645 * generated there. 12646 * 12647 * XXX KDM if we hold the lock here, we could cause a deadlock 12648 * if the frontend comes back in in this context to queue 12649 * something. 12650 */ 12651 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12652 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12653 union ctl_ha_msg msg; 12654 12655 memset(&msg, 0, sizeof(msg)); 12656 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12657 msg.hdr.original_sc = io->io_hdr.original_sc; 12658 msg.hdr.nexus = io->io_hdr.nexus; 12659 msg.hdr.status = io->io_hdr.status; 12660 msg.scsi.scsi_status = io->scsiio.scsi_status; 12661 msg.scsi.tag_num = io->scsiio.tag_num; 12662 msg.scsi.tag_type = io->scsiio.tag_type; 12663 msg.scsi.sense_len = io->scsiio.sense_len; 12664 msg.scsi.sense_residual = io->scsiio.sense_residual; 12665 msg.scsi.residual = io->scsiio.residual; 12666 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12667 sizeof(io->scsiio.sense_data)); 12668 /* 12669 * We copy this whether or not this is an I/O-related 12670 * command. Otherwise, we'd have to go and check to see 12671 * whether it's a read/write command, and it really isn't 12672 * worth it. 12673 */ 12674 memcpy(&msg.scsi.lbalen, 12675 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12676 sizeof(msg.scsi.lbalen));; 12677 12678 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12679 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12680 /* XXX do something here */ 12681 } 12682 12683 ctl_free_io_internal(io, /*have_lock*/ 0); 12684 } else 12685 fe_done(io); 12686 12687 bailout: 12688 12689 return (CTL_RETVAL_COMPLETE); 12690 } 12691 12692 /* 12693 * Front end should call this if it doesn't do autosense. When the request 12694 * sense comes back in from the initiator, we'll dequeue this and send it. 12695 */ 12696 int 12697 ctl_queue_sense(union ctl_io *io) 12698 { 12699 struct ctl_lun *lun; 12700 struct ctl_softc *ctl_softc; 12701 uint32_t initidx; 12702 12703 ctl_softc = control_softc; 12704 12705 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 12706 12707 /* 12708 * LUN lookup will likely move to the ctl_work_thread() once we 12709 * have our new queueing infrastructure (that doesn't put things on 12710 * a per-LUN queue initially). That is so that we can handle 12711 * things like an INQUIRY to a LUN that we don't have enabled. We 12712 * can't deal with that right now. 12713 */ 12714 mtx_lock(&ctl_softc->ctl_lock); 12715 12716 /* 12717 * If we don't have a LUN for this, just toss the sense 12718 * information. 12719 */ 12720 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 12721 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 12722 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 12723 else 12724 goto bailout; 12725 12726 initidx = ctl_get_initindex(&io->io_hdr.nexus); 12727 12728 /* 12729 * Already have CA set for this LUN...toss the sense information. 12730 */ 12731 if (ctl_is_set(lun->have_ca, initidx)) 12732 goto bailout; 12733 12734 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 12735 ctl_min(sizeof(lun->pending_sense[initidx].sense), 12736 sizeof(io->scsiio.sense_data))); 12737 ctl_set_mask(lun->have_ca, initidx); 12738 12739 bailout: 12740 mtx_unlock(&ctl_softc->ctl_lock); 12741 12742 ctl_free_io(io); 12743 12744 return (CTL_RETVAL_COMPLETE); 12745 } 12746 12747 /* 12748 * Primary command inlet from frontend ports. All SCSI and task I/O 12749 * requests must go through this function. 12750 */ 12751 int 12752 ctl_queue(union ctl_io *io) 12753 { 12754 struct ctl_softc *ctl_softc; 12755 12756 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 12757 12758 ctl_softc = control_softc; 12759 12760 #ifdef CTL_TIME_IO 12761 io->io_hdr.start_time = time_uptime; 12762 getbintime(&io->io_hdr.start_bt); 12763 #endif /* CTL_TIME_IO */ 12764 12765 mtx_lock(&ctl_softc->ctl_lock); 12766 12767 switch (io->io_hdr.io_type) { 12768 case CTL_IO_SCSI: 12769 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 12770 links); 12771 break; 12772 case CTL_IO_TASK: 12773 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 12774 /* 12775 * Set the task pending flag. This is necessary to close a 12776 * race condition with the FETD: 12777 * 12778 * - FETD submits a task management command, like an abort. 12779 * - Back end calls fe_datamove() to move the data for the 12780 * aborted command. The FETD can't really accept it, but 12781 * if it did, it would end up transmitting data for a 12782 * command that the initiator told us to abort. 12783 * 12784 * We close the race condition by setting the flag here, 12785 * and checking it in ctl_datamove(), before calling the 12786 * FETD's fe_datamove routine. If we've got a task 12787 * pending, we run the task queue and then check to see 12788 * whether our particular I/O has been aborted. 12789 */ 12790 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 12791 break; 12792 default: 12793 mtx_unlock(&ctl_softc->ctl_lock); 12794 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 12795 return (-EINVAL); 12796 break; /* NOTREACHED */ 12797 } 12798 mtx_unlock(&ctl_softc->ctl_lock); 12799 12800 ctl_wakeup_thread(); 12801 12802 return (CTL_RETVAL_COMPLETE); 12803 } 12804 12805 #ifdef CTL_IO_DELAY 12806 static void 12807 ctl_done_timer_wakeup(void *arg) 12808 { 12809 union ctl_io *io; 12810 12811 io = (union ctl_io *)arg; 12812 ctl_done_lock(io, /*have_lock*/ 0); 12813 } 12814 #endif /* CTL_IO_DELAY */ 12815 12816 void 12817 ctl_done_lock(union ctl_io *io, int have_lock) 12818 { 12819 struct ctl_softc *ctl_softc; 12820 #ifndef CTL_DONE_THREAD 12821 union ctl_io *xio; 12822 #endif /* !CTL_DONE_THREAD */ 12823 12824 ctl_softc = control_softc; 12825 12826 if (have_lock == 0) 12827 mtx_lock(&ctl_softc->ctl_lock); 12828 12829 /* 12830 * Enable this to catch duplicate completion issues. 12831 */ 12832 #if 0 12833 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 12834 printf("%s: type %d msg %d cdb %x iptl: " 12835 "%d:%d:%d:%d tag 0x%04x " 12836 "flag %#x status %x\n", 12837 __func__, 12838 io->io_hdr.io_type, 12839 io->io_hdr.msg_type, 12840 io->scsiio.cdb[0], 12841 io->io_hdr.nexus.initid.id, 12842 io->io_hdr.nexus.targ_port, 12843 io->io_hdr.nexus.targ_target.id, 12844 io->io_hdr.nexus.targ_lun, 12845 (io->io_hdr.io_type == 12846 CTL_IO_TASK) ? 12847 io->taskio.tag_num : 12848 io->scsiio.tag_num, 12849 io->io_hdr.flags, 12850 io->io_hdr.status); 12851 } else 12852 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 12853 #endif 12854 12855 /* 12856 * This is an internal copy of an I/O, and should not go through 12857 * the normal done processing logic. 12858 */ 12859 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 12860 if (have_lock == 0) 12861 mtx_unlock(&ctl_softc->ctl_lock); 12862 return; 12863 } 12864 12865 /* 12866 * We need to send a msg to the serializing shelf to finish the IO 12867 * as well. We don't send a finish message to the other shelf if 12868 * this is a task management command. Task management commands 12869 * aren't serialized in the OOA queue, but rather just executed on 12870 * both shelf controllers for commands that originated on that 12871 * controller. 12872 */ 12873 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 12874 && (io->io_hdr.io_type != CTL_IO_TASK)) { 12875 union ctl_ha_msg msg_io; 12876 12877 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 12878 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 12879 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 12880 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 12881 } 12882 /* continue on to finish IO */ 12883 } 12884 #ifdef CTL_IO_DELAY 12885 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12886 struct ctl_lun *lun; 12887 12888 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12889 12890 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12891 } else { 12892 struct ctl_lun *lun; 12893 12894 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12895 12896 if ((lun != NULL) 12897 && (lun->delay_info.done_delay > 0)) { 12898 struct callout *callout; 12899 12900 callout = (struct callout *)&io->io_hdr.timer_bytes; 12901 callout_init(callout, /*mpsafe*/ 1); 12902 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12903 callout_reset(callout, 12904 lun->delay_info.done_delay * hz, 12905 ctl_done_timer_wakeup, io); 12906 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 12907 lun->delay_info.done_delay = 0; 12908 if (have_lock == 0) 12909 mtx_unlock(&ctl_softc->ctl_lock); 12910 return; 12911 } 12912 } 12913 #endif /* CTL_IO_DELAY */ 12914 12915 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 12916 12917 #ifdef CTL_DONE_THREAD 12918 if (have_lock == 0) 12919 mtx_unlock(&ctl_softc->ctl_lock); 12920 12921 ctl_wakeup_thread(); 12922 #else /* CTL_DONE_THREAD */ 12923 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 12924 xio != NULL; 12925 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 12926 12927 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 12928 12929 ctl_process_done(xio, /*have_lock*/ 1); 12930 } 12931 if (have_lock == 0) 12932 mtx_unlock(&ctl_softc->ctl_lock); 12933 #endif /* CTL_DONE_THREAD */ 12934 } 12935 12936 void 12937 ctl_done(union ctl_io *io) 12938 { 12939 ctl_done_lock(io, /*have_lock*/ 0); 12940 } 12941 12942 int 12943 ctl_isc(struct ctl_scsiio *ctsio) 12944 { 12945 struct ctl_lun *lun; 12946 int retval; 12947 12948 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12949 12950 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 12951 12952 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 12953 12954 retval = lun->backend->data_submit((union ctl_io *)ctsio); 12955 12956 return (retval); 12957 } 12958 12959 12960 static void 12961 ctl_work_thread(void *arg) 12962 { 12963 struct ctl_softc *softc; 12964 union ctl_io *io; 12965 struct ctl_be_lun *be_lun; 12966 int retval; 12967 12968 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 12969 12970 softc = (struct ctl_softc *)arg; 12971 if (softc == NULL) 12972 return; 12973 12974 mtx_lock(&softc->ctl_lock); 12975 for (;;) { 12976 retval = 0; 12977 12978 /* 12979 * We handle the queues in this order: 12980 * - task management 12981 * - ISC 12982 * - done queue (to free up resources, unblock other commands) 12983 * - RtR queue 12984 * - incoming queue 12985 * 12986 * If those queues are empty, we break out of the loop and 12987 * go to sleep. 12988 */ 12989 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 12990 if (io != NULL) { 12991 ctl_run_task_queue(softc); 12992 continue; 12993 } 12994 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 12995 if (io != NULL) { 12996 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 12997 ctl_handle_isc(io); 12998 continue; 12999 } 13000 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13001 if (io != NULL) { 13002 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13003 /* clear any blocked commands, call fe_done */ 13004 mtx_unlock(&softc->ctl_lock); 13005 /* 13006 * XXX KDM 13007 * Call this without a lock for now. This will 13008 * depend on whether there is any way the FETD can 13009 * sleep or deadlock if called with the CTL lock 13010 * held. 13011 */ 13012 retval = ctl_process_done(io, /*have_lock*/ 0); 13013 mtx_lock(&softc->ctl_lock); 13014 continue; 13015 } 13016 if (!ctl_pause_rtr) { 13017 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13018 if (io != NULL) { 13019 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13020 mtx_unlock(&softc->ctl_lock); 13021 goto execute; 13022 } 13023 } 13024 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13025 if (io != NULL) { 13026 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13027 mtx_unlock(&softc->ctl_lock); 13028 ctl_scsiio_precheck(softc, &io->scsiio); 13029 mtx_lock(&softc->ctl_lock); 13030 continue; 13031 } 13032 /* 13033 * We might want to move this to a separate thread, so that 13034 * configuration requests (in this case LUN creations) 13035 * won't impact the I/O path. 13036 */ 13037 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13038 if (be_lun != NULL) { 13039 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13040 mtx_unlock(&softc->ctl_lock); 13041 ctl_create_lun(be_lun); 13042 mtx_lock(&softc->ctl_lock); 13043 continue; 13044 } 13045 13046 /* XXX KDM use the PDROP flag?? */ 13047 /* Sleep until we have something to do. */ 13048 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0); 13049 13050 /* Back to the top of the loop to see what woke us up. */ 13051 continue; 13052 13053 execute: 13054 retval = ctl_scsiio(&io->scsiio); 13055 switch (retval) { 13056 case CTL_RETVAL_COMPLETE: 13057 break; 13058 default: 13059 /* 13060 * Probably need to make sure this doesn't happen. 13061 */ 13062 break; 13063 } 13064 mtx_lock(&softc->ctl_lock); 13065 } 13066 } 13067 13068 void 13069 ctl_wakeup_thread() 13070 { 13071 struct ctl_softc *softc; 13072 13073 softc = control_softc; 13074 13075 wakeup(softc); 13076 } 13077 13078 /* Initialization and failover */ 13079 13080 void 13081 ctl_init_isc_msg(void) 13082 { 13083 printf("CTL: Still calling this thing\n"); 13084 } 13085 13086 /* 13087 * Init component 13088 * Initializes component into configuration defined by bootMode 13089 * (see hasc-sv.c) 13090 * returns hasc_Status: 13091 * OK 13092 * ERROR - fatal error 13093 */ 13094 static ctl_ha_comp_status 13095 ctl_isc_init(struct ctl_ha_component *c) 13096 { 13097 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13098 13099 c->status = ret; 13100 return ret; 13101 } 13102 13103 /* Start component 13104 * Starts component in state requested. If component starts successfully, 13105 * it must set its own state to the requestrd state 13106 * When requested state is HASC_STATE_HA, the component may refine it 13107 * by adding _SLAVE or _MASTER flags. 13108 * Currently allowed state transitions are: 13109 * UNKNOWN->HA - initial startup 13110 * UNKNOWN->SINGLE - initial startup when no parter detected 13111 * HA->SINGLE - failover 13112 * returns ctl_ha_comp_status: 13113 * OK - component successfully started in requested state 13114 * FAILED - could not start the requested state, failover may 13115 * be possible 13116 * ERROR - fatal error detected, no future startup possible 13117 */ 13118 static ctl_ha_comp_status 13119 ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13120 { 13121 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13122 13123 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13124 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13125 ctl_is_single = 0; 13126 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13127 != CTL_HA_STATUS_SUCCESS) { 13128 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13129 ret = CTL_HA_COMP_STATUS_ERROR; 13130 } 13131 } else if (CTL_HA_STATE_IS_HA(c->state) 13132 && CTL_HA_STATE_IS_SINGLE(state)){ 13133 // HA->SINGLE transition 13134 ctl_failover(); 13135 ctl_is_single = 1; 13136 } else { 13137 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13138 c->state, state); 13139 ret = CTL_HA_COMP_STATUS_ERROR; 13140 } 13141 if (CTL_HA_STATE_IS_SINGLE(state)) 13142 ctl_is_single = 1; 13143 13144 c->state = state; 13145 c->status = ret; 13146 return ret; 13147 } 13148 13149 /* 13150 * Quiesce component 13151 * The component must clear any error conditions (set status to OK) and 13152 * prepare itself to another Start call 13153 * returns ctl_ha_comp_status: 13154 * OK 13155 * ERROR 13156 */ 13157 static ctl_ha_comp_status 13158 ctl_isc_quiesce(struct ctl_ha_component *c) 13159 { 13160 int ret = CTL_HA_COMP_STATUS_OK; 13161 13162 ctl_pause_rtr = 1; 13163 c->status = ret; 13164 return ret; 13165 } 13166 13167 struct ctl_ha_component ctl_ha_component_ctlisc = 13168 { 13169 .name = "CTL ISC", 13170 .state = CTL_HA_STATE_UNKNOWN, 13171 .init = ctl_isc_init, 13172 .start = ctl_isc_start, 13173 .quiesce = ctl_isc_quiesce 13174 }; 13175 13176 /* 13177 * vim: ts=8 13178 */ 13179