ctl.c revision 264264
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: head/sys/cam/ctl/ctl.c 264264 2014-04-08 18:22:03Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * The default is to run with CTL_DONE_THREAD turned on. Completed 87 * transactions are queued for processing by the CTL work thread. When 88 * CTL_DONE_THREAD is not defined, completed transactions are processed in 89 * the caller's context. 90 */ 91#define CTL_DONE_THREAD 92 93/* 94 * Use the serial number and device ID provided by the backend, rather than 95 * making up our own. 96 */ 97#define CTL_USE_BACKEND_SN 98 99/* 100 * Size and alignment macros needed for Copan-specific HA hardware. These 101 * can go away when the HA code is re-written, and uses busdma for any 102 * hardware. 103 */ 104#define CTL_ALIGN_8B(target, source, type) \ 105 if (((uint32_t)source & 0x7) != 0) \ 106 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 107 else \ 108 target = (type)source; 109 110#define CTL_SIZE_8B(target, size) \ 111 if ((size & 0x7) != 0) \ 112 target = size + (0x8 - (size & 0x7)); \ 113 else \ 114 target = size; 115 116#define CTL_ALIGN_8B_MARGIN 16 117 118/* 119 * Template mode pages. 120 */ 121 122/* 123 * Note that these are default values only. The actual values will be 124 * filled in when the user does a mode sense. 125 */ 126static struct copan_power_subpage power_page_default = { 127 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 128 /*subpage*/ PWR_SUBPAGE_CODE, 129 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 130 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 131 /*page_version*/ PWR_VERSION, 132 /* total_luns */ 26, 133 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 134 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 136 0, 0, 0, 0, 0, 0} 137}; 138 139static struct copan_power_subpage power_page_changeable = { 140 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 141 /*subpage*/ PWR_SUBPAGE_CODE, 142 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 143 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 144 /*page_version*/ 0, 145 /* total_luns */ 0, 146 /* max_active_luns*/ 0, 147 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 148 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 149 0, 0, 0, 0, 0, 0} 150}; 151 152static struct copan_aps_subpage aps_page_default = { 153 APS_PAGE_CODE | SMPH_SPF, //page_code 154 APS_SUBPAGE_CODE, //subpage 155 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 156 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 157 APS_VERSION, //page_version 158 0, //lock_active 159 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 160 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 161 0, 0, 0, 0, 0} //reserved 162}; 163 164static struct copan_aps_subpage aps_page_changeable = { 165 APS_PAGE_CODE | SMPH_SPF, //page_code 166 APS_SUBPAGE_CODE, //subpage 167 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 168 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 169 0, //page_version 170 0, //lock_active 171 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 172 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 173 0, 0, 0, 0, 0} //reserved 174}; 175 176static struct copan_debugconf_subpage debugconf_page_default = { 177 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 178 DBGCNF_SUBPAGE_CODE, /* subpage */ 179 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 180 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 181 DBGCNF_VERSION, /* page_version */ 182 {CTL_TIME_IO_DEFAULT_SECS>>8, 183 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 184}; 185 186static struct copan_debugconf_subpage debugconf_page_changeable = { 187 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 188 DBGCNF_SUBPAGE_CODE, /* subpage */ 189 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 190 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 191 0, /* page_version */ 192 {0xff,0xff}, /* ctl_time_io_secs */ 193}; 194 195static struct scsi_format_page format_page_default = { 196 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 197 /*page_length*/sizeof(struct scsi_format_page) - 2, 198 /*tracks_per_zone*/ {0, 0}, 199 /*alt_sectors_per_zone*/ {0, 0}, 200 /*alt_tracks_per_zone*/ {0, 0}, 201 /*alt_tracks_per_lun*/ {0, 0}, 202 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 203 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 204 /*bytes_per_sector*/ {0, 0}, 205 /*interleave*/ {0, 0}, 206 /*track_skew*/ {0, 0}, 207 /*cylinder_skew*/ {0, 0}, 208 /*flags*/ SFP_HSEC, 209 /*reserved*/ {0, 0, 0} 210}; 211 212static struct scsi_format_page format_page_changeable = { 213 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 214 /*page_length*/sizeof(struct scsi_format_page) - 2, 215 /*tracks_per_zone*/ {0, 0}, 216 /*alt_sectors_per_zone*/ {0, 0}, 217 /*alt_tracks_per_zone*/ {0, 0}, 218 /*alt_tracks_per_lun*/ {0, 0}, 219 /*sectors_per_track*/ {0, 0}, 220 /*bytes_per_sector*/ {0, 0}, 221 /*interleave*/ {0, 0}, 222 /*track_skew*/ {0, 0}, 223 /*cylinder_skew*/ {0, 0}, 224 /*flags*/ 0, 225 /*reserved*/ {0, 0, 0} 226}; 227 228static struct scsi_rigid_disk_page rigid_disk_page_default = { 229 /*page_code*/SMS_RIGID_DISK_PAGE, 230 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 231 /*cylinders*/ {0, 0, 0}, 232 /*heads*/ CTL_DEFAULT_HEADS, 233 /*start_write_precomp*/ {0, 0, 0}, 234 /*start_reduced_current*/ {0, 0, 0}, 235 /*step_rate*/ {0, 0}, 236 /*landing_zone_cylinder*/ {0, 0, 0}, 237 /*rpl*/ SRDP_RPL_DISABLED, 238 /*rotational_offset*/ 0, 239 /*reserved1*/ 0, 240 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 241 CTL_DEFAULT_ROTATION_RATE & 0xff}, 242 /*reserved2*/ {0, 0} 243}; 244 245static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 246 /*page_code*/SMS_RIGID_DISK_PAGE, 247 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 248 /*cylinders*/ {0, 0, 0}, 249 /*heads*/ 0, 250 /*start_write_precomp*/ {0, 0, 0}, 251 /*start_reduced_current*/ {0, 0, 0}, 252 /*step_rate*/ {0, 0}, 253 /*landing_zone_cylinder*/ {0, 0, 0}, 254 /*rpl*/ 0, 255 /*rotational_offset*/ 0, 256 /*reserved1*/ 0, 257 /*rotation_rate*/ {0, 0}, 258 /*reserved2*/ {0, 0} 259}; 260 261static struct scsi_caching_page caching_page_default = { 262 /*page_code*/SMS_CACHING_PAGE, 263 /*page_length*/sizeof(struct scsi_caching_page) - 2, 264 /*flags1*/ SCP_DISC | SCP_WCE, 265 /*ret_priority*/ 0, 266 /*disable_pf_transfer_len*/ {0xff, 0xff}, 267 /*min_prefetch*/ {0, 0}, 268 /*max_prefetch*/ {0xff, 0xff}, 269 /*max_pf_ceiling*/ {0xff, 0xff}, 270 /*flags2*/ 0, 271 /*cache_segments*/ 0, 272 /*cache_seg_size*/ {0, 0}, 273 /*reserved*/ 0, 274 /*non_cache_seg_size*/ {0, 0, 0} 275}; 276 277static struct scsi_caching_page caching_page_changeable = { 278 /*page_code*/SMS_CACHING_PAGE, 279 /*page_length*/sizeof(struct scsi_caching_page) - 2, 280 /*flags1*/ 0, 281 /*ret_priority*/ 0, 282 /*disable_pf_transfer_len*/ {0, 0}, 283 /*min_prefetch*/ {0, 0}, 284 /*max_prefetch*/ {0, 0}, 285 /*max_pf_ceiling*/ {0, 0}, 286 /*flags2*/ 0, 287 /*cache_segments*/ 0, 288 /*cache_seg_size*/ {0, 0}, 289 /*reserved*/ 0, 290 /*non_cache_seg_size*/ {0, 0, 0} 291}; 292 293static struct scsi_control_page control_page_default = { 294 /*page_code*/SMS_CONTROL_MODE_PAGE, 295 /*page_length*/sizeof(struct scsi_control_page) - 2, 296 /*rlec*/0, 297 /*queue_flags*/0, 298 /*eca_and_aen*/0, 299 /*reserved*/0, 300 /*aen_holdoff_period*/{0, 0} 301}; 302 303static struct scsi_control_page control_page_changeable = { 304 /*page_code*/SMS_CONTROL_MODE_PAGE, 305 /*page_length*/sizeof(struct scsi_control_page) - 2, 306 /*rlec*/SCP_DSENSE, 307 /*queue_flags*/0, 308 /*eca_and_aen*/0, 309 /*reserved*/0, 310 /*aen_holdoff_period*/{0, 0} 311}; 312 313 314/* 315 * XXX KDM move these into the softc. 316 */ 317static int rcv_sync_msg; 318static int persis_offset; 319static uint8_t ctl_pause_rtr; 320static int ctl_is_single = 1; 321static int index_to_aps_page; 322 323SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 324static int worker_threads = 1; 325TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 326SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 327 &worker_threads, 1, "Number of worker threads"); 328static int verbose = 0; 329TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 330SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 331 &verbose, 0, "Show SCSI errors returned to initiator"); 332 333/* 334 * Serial number (0x80), device id (0x83), and supported pages (0x00) 335 */ 336#define SCSI_EVPD_NUM_SUPPORTED_PAGES 3 337 338static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 339 int param); 340static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 341static int ctl_init(void); 342void ctl_shutdown(void); 343static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 344static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 345static void ctl_ioctl_online(void *arg); 346static void ctl_ioctl_offline(void *arg); 347static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 348static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 349static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 350static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 351static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 352static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 353static int ctl_ioctl_submit_wait(union ctl_io *io); 354static void ctl_ioctl_datamove(union ctl_io *io); 355static void ctl_ioctl_done(union ctl_io *io); 356static void ctl_ioctl_hard_startstop_callback(void *arg, 357 struct cfi_metatask *metatask); 358static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 359static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 360 struct ctl_ooa *ooa_hdr, 361 struct ctl_ooa_entry *kern_entries); 362static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 363 struct thread *td); 364uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 365uint32_t ctl_port_idx(int port_num); 366#ifdef unused 367static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 368 uint32_t targ_target, uint32_t targ_lun, 369 int can_wait); 370static void ctl_kfree_io(union ctl_io *io); 371#endif /* unused */ 372static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 373 struct ctl_be_lun *be_lun, struct ctl_id target_id); 374static int ctl_free_lun(struct ctl_lun *lun); 375static void ctl_create_lun(struct ctl_be_lun *be_lun); 376/** 377static void ctl_failover_change_pages(struct ctl_softc *softc, 378 struct ctl_scsiio *ctsio, int master); 379**/ 380 381static int ctl_do_mode_select(union ctl_io *io); 382static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 383 uint64_t res_key, uint64_t sa_res_key, 384 uint8_t type, uint32_t residx, 385 struct ctl_scsiio *ctsio, 386 struct scsi_per_res_out *cdb, 387 struct scsi_per_res_out_parms* param); 388static void ctl_pro_preempt_other(struct ctl_lun *lun, 389 union ctl_ha_msg *msg); 390static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 391static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 392static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 393static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 394static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 395static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 396static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 397static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 398static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 399 union ctl_io *ooa_io); 400static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 401 union ctl_io *starting_io); 402static int ctl_check_blocked(struct ctl_lun *lun); 403static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 404 struct ctl_lun *lun, 405 struct ctl_cmd_entry *entry, 406 struct ctl_scsiio *ctsio); 407//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 408static void ctl_failover(void); 409static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 410 struct ctl_scsiio *ctsio); 411static int ctl_scsiio(struct ctl_scsiio *ctsio); 412 413static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 414static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 415 ctl_ua_type ua_type); 416static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 417 ctl_ua_type ua_type); 418static int ctl_abort_task(union ctl_io *io); 419static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 420#ifdef CTL_IO_DELAY 421static void ctl_datamove_timer_wakeup(void *arg); 422static void ctl_done_timer_wakeup(void *arg); 423#endif /* CTL_IO_DELAY */ 424 425static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 426static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 427static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 428static void ctl_datamove_remote_write(union ctl_io *io); 429static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 430static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 431static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 432static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 433 ctl_ha_dt_cb callback); 434static void ctl_datamove_remote_read(union ctl_io *io); 435static void ctl_datamove_remote(union ctl_io *io); 436static int ctl_process_done(union ctl_io *io, int have_lock); 437static void ctl_work_thread(void *arg); 438 439/* 440 * Load the serialization table. This isn't very pretty, but is probably 441 * the easiest way to do it. 442 */ 443#include "ctl_ser_table.c" 444 445/* 446 * We only need to define open, close and ioctl routines for this driver. 447 */ 448static struct cdevsw ctl_cdevsw = { 449 .d_version = D_VERSION, 450 .d_flags = 0, 451 .d_open = ctl_open, 452 .d_close = ctl_close, 453 .d_ioctl = ctl_ioctl, 454 .d_name = "ctl", 455}; 456 457 458MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 459 460static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 461 462static moduledata_t ctl_moduledata = { 463 "ctl", 464 ctl_module_event_handler, 465 NULL 466}; 467 468DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 469MODULE_VERSION(ctl, 1); 470 471static void 472ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 473 union ctl_ha_msg *msg_info) 474{ 475 struct ctl_scsiio *ctsio; 476 477 if (msg_info->hdr.original_sc == NULL) { 478 printf("%s: original_sc == NULL!\n", __func__); 479 /* XXX KDM now what? */ 480 return; 481 } 482 483 ctsio = &msg_info->hdr.original_sc->scsiio; 484 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 485 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 486 ctsio->io_hdr.status = msg_info->hdr.status; 487 ctsio->scsi_status = msg_info->scsi.scsi_status; 488 ctsio->sense_len = msg_info->scsi.sense_len; 489 ctsio->sense_residual = msg_info->scsi.sense_residual; 490 ctsio->residual = msg_info->scsi.residual; 491 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 492 sizeof(ctsio->sense_data)); 493 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 494 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 495 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 496 ctl_wakeup_thread(); 497} 498 499static void 500ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 501 union ctl_ha_msg *msg_info) 502{ 503 struct ctl_scsiio *ctsio; 504 505 if (msg_info->hdr.serializing_sc == NULL) { 506 printf("%s: serializing_sc == NULL!\n", __func__); 507 /* XXX KDM now what? */ 508 return; 509 } 510 511 ctsio = &msg_info->hdr.serializing_sc->scsiio; 512#if 0 513 /* 514 * Attempt to catch the situation where an I/O has 515 * been freed, and we're using it again. 516 */ 517 if (ctsio->io_hdr.io_type == 0xff) { 518 union ctl_io *tmp_io; 519 tmp_io = (union ctl_io *)ctsio; 520 printf("%s: %p use after free!\n", __func__, 521 ctsio); 522 printf("%s: type %d msg %d cdb %x iptl: " 523 "%d:%d:%d:%d tag 0x%04x " 524 "flag %#x status %x\n", 525 __func__, 526 tmp_io->io_hdr.io_type, 527 tmp_io->io_hdr.msg_type, 528 tmp_io->scsiio.cdb[0], 529 tmp_io->io_hdr.nexus.initid.id, 530 tmp_io->io_hdr.nexus.targ_port, 531 tmp_io->io_hdr.nexus.targ_target.id, 532 tmp_io->io_hdr.nexus.targ_lun, 533 (tmp_io->io_hdr.io_type == 534 CTL_IO_TASK) ? 535 tmp_io->taskio.tag_num : 536 tmp_io->scsiio.tag_num, 537 tmp_io->io_hdr.flags, 538 tmp_io->io_hdr.status); 539 } 540#endif 541 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 542 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 543 ctl_wakeup_thread(); 544} 545 546/* 547 * ISC (Inter Shelf Communication) event handler. Events from the HA 548 * subsystem come in here. 549 */ 550static void 551ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 552{ 553 struct ctl_softc *ctl_softc; 554 union ctl_io *io; 555 struct ctl_prio *presio; 556 ctl_ha_status isc_status; 557 558 ctl_softc = control_softc; 559 io = NULL; 560 561 562#if 0 563 printf("CTL: Isc Msg event %d\n", event); 564#endif 565 if (event == CTL_HA_EVT_MSG_RECV) { 566 union ctl_ha_msg msg_info; 567 568 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 569 sizeof(msg_info), /*wait*/ 0); 570#if 0 571 printf("CTL: msg_type %d\n", msg_info.msg_type); 572#endif 573 if (isc_status != 0) { 574 printf("Error receiving message, status = %d\n", 575 isc_status); 576 return; 577 } 578 mtx_lock(&ctl_softc->ctl_lock); 579 580 switch (msg_info.hdr.msg_type) { 581 case CTL_MSG_SERIALIZE: 582#if 0 583 printf("Serialize\n"); 584#endif 585 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 586 if (io == NULL) { 587 printf("ctl_isc_event_handler: can't allocate " 588 "ctl_io!\n"); 589 /* Bad Juju */ 590 /* Need to set busy and send msg back */ 591 mtx_unlock(&ctl_softc->ctl_lock); 592 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 593 msg_info.hdr.status = CTL_SCSI_ERROR; 594 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 595 msg_info.scsi.sense_len = 0; 596 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 597 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 598 } 599 goto bailout; 600 } 601 ctl_zero_io(io); 602 // populate ctsio from msg_info 603 io->io_hdr.io_type = CTL_IO_SCSI; 604 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 605 io->io_hdr.original_sc = msg_info.hdr.original_sc; 606#if 0 607 printf("pOrig %x\n", (int)msg_info.original_sc); 608#endif 609 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 610 CTL_FLAG_IO_ACTIVE; 611 /* 612 * If we're in serialization-only mode, we don't 613 * want to go through full done processing. Thus 614 * the COPY flag. 615 * 616 * XXX KDM add another flag that is more specific. 617 */ 618 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 619 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 620 io->io_hdr.nexus = msg_info.hdr.nexus; 621#if 0 622 printf("targ %d, port %d, iid %d, lun %d\n", 623 io->io_hdr.nexus.targ_target.id, 624 io->io_hdr.nexus.targ_port, 625 io->io_hdr.nexus.initid.id, 626 io->io_hdr.nexus.targ_lun); 627#endif 628 io->scsiio.tag_num = msg_info.scsi.tag_num; 629 io->scsiio.tag_type = msg_info.scsi.tag_type; 630 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 631 CTL_MAX_CDBLEN); 632 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 633 struct ctl_cmd_entry *entry; 634 uint8_t opcode; 635 636 opcode = io->scsiio.cdb[0]; 637 entry = &ctl_cmd_table[opcode]; 638 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 639 io->io_hdr.flags |= 640 entry->flags & CTL_FLAG_DATA_MASK; 641 } 642 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 643 &io->io_hdr, links); 644 ctl_wakeup_thread(); 645 break; 646 647 /* Performed on the Originating SC, XFER mode only */ 648 case CTL_MSG_DATAMOVE: { 649 struct ctl_sg_entry *sgl; 650 int i, j; 651 652 io = msg_info.hdr.original_sc; 653 if (io == NULL) { 654 printf("%s: original_sc == NULL!\n", __func__); 655 /* XXX KDM do something here */ 656 break; 657 } 658 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 659 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 660 /* 661 * Keep track of this, we need to send it back over 662 * when the datamove is complete. 663 */ 664 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 665 666 if (msg_info.dt.sg_sequence == 0) { 667 /* 668 * XXX KDM we use the preallocated S/G list 669 * here, but we'll need to change this to 670 * dynamic allocation if we need larger S/G 671 * lists. 672 */ 673 if (msg_info.dt.kern_sg_entries > 674 sizeof(io->io_hdr.remote_sglist) / 675 sizeof(io->io_hdr.remote_sglist[0])) { 676 printf("%s: number of S/G entries " 677 "needed %u > allocated num %zd\n", 678 __func__, 679 msg_info.dt.kern_sg_entries, 680 sizeof(io->io_hdr.remote_sglist)/ 681 sizeof(io->io_hdr.remote_sglist[0])); 682 683 /* 684 * XXX KDM send a message back to 685 * the other side to shut down the 686 * DMA. The error will come back 687 * through via the normal channel. 688 */ 689 break; 690 } 691 sgl = io->io_hdr.remote_sglist; 692 memset(sgl, 0, 693 sizeof(io->io_hdr.remote_sglist)); 694 695 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 696 697 io->scsiio.kern_sg_entries = 698 msg_info.dt.kern_sg_entries; 699 io->scsiio.rem_sg_entries = 700 msg_info.dt.kern_sg_entries; 701 io->scsiio.kern_data_len = 702 msg_info.dt.kern_data_len; 703 io->scsiio.kern_total_len = 704 msg_info.dt.kern_total_len; 705 io->scsiio.kern_data_resid = 706 msg_info.dt.kern_data_resid; 707 io->scsiio.kern_rel_offset = 708 msg_info.dt.kern_rel_offset; 709 /* 710 * Clear out per-DMA flags. 711 */ 712 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 713 /* 714 * Add per-DMA flags that are set for this 715 * particular DMA request. 716 */ 717 io->io_hdr.flags |= msg_info.dt.flags & 718 CTL_FLAG_RDMA_MASK; 719 } else 720 sgl = (struct ctl_sg_entry *) 721 io->scsiio.kern_data_ptr; 722 723 for (i = msg_info.dt.sent_sg_entries, j = 0; 724 i < (msg_info.dt.sent_sg_entries + 725 msg_info.dt.cur_sg_entries); i++, j++) { 726 sgl[i].addr = msg_info.dt.sg_list[j].addr; 727 sgl[i].len = msg_info.dt.sg_list[j].len; 728 729#if 0 730 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 731 __func__, 732 msg_info.dt.sg_list[j].addr, 733 msg_info.dt.sg_list[j].len, 734 sgl[i].addr, sgl[i].len, j, i); 735#endif 736 } 737#if 0 738 memcpy(&sgl[msg_info.dt.sent_sg_entries], 739 msg_info.dt.sg_list, 740 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 741#endif 742 743 /* 744 * If this is the last piece of the I/O, we've got 745 * the full S/G list. Queue processing in the thread. 746 * Otherwise wait for the next piece. 747 */ 748 if (msg_info.dt.sg_last != 0) { 749 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 750 &io->io_hdr, links); 751 ctl_wakeup_thread(); 752 } 753 break; 754 } 755 /* Performed on the Serializing (primary) SC, XFER mode only */ 756 case CTL_MSG_DATAMOVE_DONE: { 757 if (msg_info.hdr.serializing_sc == NULL) { 758 printf("%s: serializing_sc == NULL!\n", 759 __func__); 760 /* XXX KDM now what? */ 761 break; 762 } 763 /* 764 * We grab the sense information here in case 765 * there was a failure, so we can return status 766 * back to the initiator. 767 */ 768 io = msg_info.hdr.serializing_sc; 769 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 770 io->io_hdr.status = msg_info.hdr.status; 771 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 772 io->scsiio.sense_len = msg_info.scsi.sense_len; 773 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 774 io->io_hdr.port_status = msg_info.scsi.fetd_status; 775 io->scsiio.residual = msg_info.scsi.residual; 776 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 777 sizeof(io->scsiio.sense_data)); 778 779 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 780 &io->io_hdr, links); 781 ctl_wakeup_thread(); 782 break; 783 } 784 785 /* Preformed on Originating SC, SER_ONLY mode */ 786 case CTL_MSG_R2R: 787 io = msg_info.hdr.original_sc; 788 if (io == NULL) { 789 printf("%s: Major Bummer\n", __func__); 790 mtx_unlock(&ctl_softc->ctl_lock); 791 return; 792 } else { 793#if 0 794 printf("pOrig %x\n",(int) ctsio); 795#endif 796 } 797 io->io_hdr.msg_type = CTL_MSG_R2R; 798 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 799 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 800 &io->io_hdr, links); 801 ctl_wakeup_thread(); 802 break; 803 804 /* 805 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 806 * mode. 807 * Performed on the Originating (i.e. secondary) SC in XFER 808 * mode 809 */ 810 case CTL_MSG_FINISH_IO: 811 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 812 ctl_isc_handler_finish_xfer(ctl_softc, 813 &msg_info); 814 else 815 ctl_isc_handler_finish_ser_only(ctl_softc, 816 &msg_info); 817 break; 818 819 /* Preformed on Originating SC */ 820 case CTL_MSG_BAD_JUJU: 821 io = msg_info.hdr.original_sc; 822 if (io == NULL) { 823 printf("%s: Bad JUJU!, original_sc is NULL!\n", 824 __func__); 825 break; 826 } 827 ctl_copy_sense_data(&msg_info, io); 828 /* 829 * IO should have already been cleaned up on other 830 * SC so clear this flag so we won't send a message 831 * back to finish the IO there. 832 */ 833 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 834 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 835 836 /* io = msg_info.hdr.serializing_sc; */ 837 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 838 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 839 &io->io_hdr, links); 840 ctl_wakeup_thread(); 841 break; 842 843 /* Handle resets sent from the other side */ 844 case CTL_MSG_MANAGE_TASKS: { 845 struct ctl_taskio *taskio; 846 taskio = (struct ctl_taskio *)ctl_alloc_io( 847 (void *)ctl_softc->othersc_pool); 848 if (taskio == NULL) { 849 printf("ctl_isc_event_handler: can't allocate " 850 "ctl_io!\n"); 851 /* Bad Juju */ 852 /* should I just call the proper reset func 853 here??? */ 854 mtx_unlock(&ctl_softc->ctl_lock); 855 goto bailout; 856 } 857 ctl_zero_io((union ctl_io *)taskio); 858 taskio->io_hdr.io_type = CTL_IO_TASK; 859 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 860 taskio->io_hdr.nexus = msg_info.hdr.nexus; 861 taskio->task_action = msg_info.task.task_action; 862 taskio->tag_num = msg_info.task.tag_num; 863 taskio->tag_type = msg_info.task.tag_type; 864#ifdef CTL_TIME_IO 865 taskio->io_hdr.start_time = time_uptime; 866 getbintime(&taskio->io_hdr.start_bt); 867#if 0 868 cs_prof_gettime(&taskio->io_hdr.start_ticks); 869#endif 870#endif /* CTL_TIME_IO */ 871 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 872 &taskio->io_hdr, links); 873 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 874 ctl_wakeup_thread(); 875 break; 876 } 877 /* Persistent Reserve action which needs attention */ 878 case CTL_MSG_PERS_ACTION: 879 presio = (struct ctl_prio *)ctl_alloc_io( 880 (void *)ctl_softc->othersc_pool); 881 if (presio == NULL) { 882 printf("ctl_isc_event_handler: can't allocate " 883 "ctl_io!\n"); 884 /* Bad Juju */ 885 /* Need to set busy and send msg back */ 886 mtx_unlock(&ctl_softc->ctl_lock); 887 goto bailout; 888 } 889 ctl_zero_io((union ctl_io *)presio); 890 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 891 presio->pr_msg = msg_info.pr; 892 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 893 &presio->io_hdr, links); 894 ctl_wakeup_thread(); 895 break; 896 case CTL_MSG_SYNC_FE: 897 rcv_sync_msg = 1; 898 break; 899 case CTL_MSG_APS_LOCK: { 900 // It's quicker to execute this then to 901 // queue it. 902 struct ctl_lun *lun; 903 struct ctl_page_index *page_index; 904 struct copan_aps_subpage *current_sp; 905 uint32_t targ_lun; 906 907 targ_lun = msg_info.hdr.nexus.targ_lun; 908 if (msg_info.hdr.nexus.lun_map_fn != NULL) 909 targ_lun = msg_info.hdr.nexus.lun_map_fn(msg_info.hdr.nexus.lun_map_arg, targ_lun); 910 911 lun = ctl_softc->ctl_luns[targ_lun]; 912 page_index = &lun->mode_pages.index[index_to_aps_page]; 913 current_sp = (struct copan_aps_subpage *) 914 (page_index->page_data + 915 (page_index->page_len * CTL_PAGE_CURRENT)); 916 917 current_sp->lock_active = msg_info.aps.lock_flag; 918 break; 919 } 920 default: 921 printf("How did I get here?\n"); 922 } 923 mtx_unlock(&ctl_softc->ctl_lock); 924 } else if (event == CTL_HA_EVT_MSG_SENT) { 925 if (param != CTL_HA_STATUS_SUCCESS) { 926 printf("Bad status from ctl_ha_msg_send status %d\n", 927 param); 928 } 929 return; 930 } else if (event == CTL_HA_EVT_DISCONNECT) { 931 printf("CTL: Got a disconnect from Isc\n"); 932 return; 933 } else { 934 printf("ctl_isc_event_handler: Unknown event %d\n", event); 935 return; 936 } 937 938bailout: 939 return; 940} 941 942static void 943ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 944{ 945 struct scsi_sense_data *sense; 946 947 sense = &dest->scsiio.sense_data; 948 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 949 dest->scsiio.scsi_status = src->scsi.scsi_status; 950 dest->scsiio.sense_len = src->scsi.sense_len; 951 dest->io_hdr.status = src->hdr.status; 952} 953 954static int 955ctl_init(void) 956{ 957 struct ctl_softc *softc; 958 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 959 struct ctl_frontend *fe; 960 struct ctl_lun *lun; 961 uint8_t sc_id =0; 962 int i, error, retval; 963 //int isc_retval; 964 965 retval = 0; 966 ctl_pause_rtr = 0; 967 rcv_sync_msg = 0; 968 969 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 970 M_WAITOK | M_ZERO); 971 softc = control_softc; 972 973 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 974 "cam/ctl"); 975 976 softc->dev->si_drv1 = softc; 977 978 /* 979 * By default, return a "bad LUN" peripheral qualifier for unknown 980 * LUNs. The user can override this default using the tunable or 981 * sysctl. See the comment in ctl_inquiry_std() for more details. 982 */ 983 softc->inquiry_pq_no_lun = 1; 984 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 985 &softc->inquiry_pq_no_lun); 986 sysctl_ctx_init(&softc->sysctl_ctx); 987 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 988 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 989 CTLFLAG_RD, 0, "CAM Target Layer"); 990 991 if (softc->sysctl_tree == NULL) { 992 printf("%s: unable to allocate sysctl tree\n", __func__); 993 destroy_dev(softc->dev); 994 free(control_softc, M_DEVBUF); 995 control_softc = NULL; 996 return (ENOMEM); 997 } 998 999 SYSCTL_ADD_INT(&softc->sysctl_ctx, 1000 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 1001 "inquiry_pq_no_lun", CTLFLAG_RW, 1002 &softc->inquiry_pq_no_lun, 0, 1003 "Report no lun possible for invalid LUNs"); 1004 1005 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 1006 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 1007 softc->open_count = 0; 1008 1009 /* 1010 * Default to actually sending a SYNCHRONIZE CACHE command down to 1011 * the drive. 1012 */ 1013 softc->flags = CTL_FLAG_REAL_SYNC; 1014 1015 /* 1016 * In Copan's HA scheme, the "master" and "slave" roles are 1017 * figured out through the slot the controller is in. Although it 1018 * is an active/active system, someone has to be in charge. 1019 */ 1020#ifdef NEEDTOPORT 1021 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1022#endif 1023 1024 if (sc_id == 0) { 1025 softc->flags |= CTL_FLAG_MASTER_SHELF; 1026 persis_offset = 0; 1027 } else 1028 persis_offset = CTL_MAX_INITIATORS; 1029 1030 /* 1031 * XXX KDM need to figure out where we want to get our target ID 1032 * and WWID. Is it different on each port? 1033 */ 1034 softc->target.id = 0; 1035 softc->target.wwid[0] = 0x12345678; 1036 softc->target.wwid[1] = 0x87654321; 1037 STAILQ_INIT(&softc->lun_list); 1038 STAILQ_INIT(&softc->pending_lun_queue); 1039 STAILQ_INIT(&softc->task_queue); 1040 STAILQ_INIT(&softc->incoming_queue); 1041 STAILQ_INIT(&softc->rtr_queue); 1042 STAILQ_INIT(&softc->done_queue); 1043 STAILQ_INIT(&softc->isc_queue); 1044 STAILQ_INIT(&softc->fe_list); 1045 STAILQ_INIT(&softc->be_list); 1046 STAILQ_INIT(&softc->io_pools); 1047 1048 lun = &softc->lun; 1049 1050 /* 1051 * We don't bother calling these with ctl_lock held here, because, 1052 * in theory, no one else can try to do anything while we're in our 1053 * module init routine. 1054 */ 1055 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1056 &internal_pool)!= 0){ 1057 printf("ctl: can't allocate %d entry internal pool, " 1058 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1059 return (ENOMEM); 1060 } 1061 1062 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1063 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1064 printf("ctl: can't allocate %d entry emergency pool, " 1065 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1066 ctl_pool_free(internal_pool); 1067 return (ENOMEM); 1068 } 1069 1070 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1071 &other_pool) != 0) 1072 { 1073 printf("ctl: can't allocate %d entry other SC pool, " 1074 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1075 ctl_pool_free(internal_pool); 1076 ctl_pool_free(emergency_pool); 1077 return (ENOMEM); 1078 } 1079 1080 softc->internal_pool = internal_pool; 1081 softc->emergency_pool = emergency_pool; 1082 softc->othersc_pool = other_pool; 1083 1084 /* 1085 * We used to allocate a processor LUN here. The new scheme is to 1086 * just let the user allocate LUNs as he sees fit. 1087 */ 1088#if 0 1089 mtx_lock(&softc->ctl_lock); 1090 ctl_alloc_lun(softc, lun, /*be_lun*/NULL, /*target*/softc->target); 1091 mtx_unlock(&softc->ctl_lock); 1092#endif 1093 1094 if (worker_threads > MAXCPU || worker_threads == 0) { 1095 printf("invalid kern.cam.ctl.worker_threads value; " 1096 "setting to 1"); 1097 worker_threads = 1; 1098 } else if (worker_threads < 0) { 1099 if (mp_ncpus > 2) { 1100 /* 1101 * Using more than two worker threads actually hurts 1102 * performance due to lock contention. 1103 */ 1104 worker_threads = 2; 1105 } else { 1106 worker_threads = 1; 1107 } 1108 } 1109 1110 for (i = 0; i < worker_threads; i++) { 1111 error = kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0, 1112 "ctl_thrd%d", i); 1113 if (error != 0) { 1114 printf("error creating CTL work thread!\n"); 1115 mtx_lock(&softc->ctl_lock); 1116 ctl_free_lun(lun); 1117 mtx_unlock(&softc->ctl_lock); 1118 ctl_pool_free(internal_pool); 1119 ctl_pool_free(emergency_pool); 1120 ctl_pool_free(other_pool); 1121 return (error); 1122 } 1123 } 1124 if (bootverbose) 1125 printf("ctl: CAM Target Layer loaded\n"); 1126 1127 /* 1128 * Initialize the initiator and portname mappings 1129 */ 1130 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1131 1132 /* 1133 * Initialize the ioctl front end. 1134 */ 1135 fe = &softc->ioctl_info.fe; 1136 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1137 fe->port_type = CTL_PORT_IOCTL; 1138 fe->num_requested_ctl_io = 100; 1139 fe->port_name = softc->ioctl_info.port_name; 1140 fe->port_online = ctl_ioctl_online; 1141 fe->port_offline = ctl_ioctl_offline; 1142 fe->onoff_arg = &softc->ioctl_info; 1143 fe->targ_enable = ctl_ioctl_targ_enable; 1144 fe->targ_disable = ctl_ioctl_targ_disable; 1145 fe->lun_enable = ctl_ioctl_lun_enable; 1146 fe->lun_disable = ctl_ioctl_lun_disable; 1147 fe->targ_lun_arg = &softc->ioctl_info; 1148 fe->fe_datamove = ctl_ioctl_datamove; 1149 fe->fe_done = ctl_ioctl_done; 1150 fe->max_targets = 15; 1151 fe->max_target_id = 15; 1152 1153 if (ctl_frontend_register(&softc->ioctl_info.fe, 1154 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1155 printf("ctl: ioctl front end registration failed, will " 1156 "continue anyway\n"); 1157 } 1158 1159#ifdef CTL_IO_DELAY 1160 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1161 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1162 sizeof(struct callout), CTL_TIMER_BYTES); 1163 return (EINVAL); 1164 } 1165#endif /* CTL_IO_DELAY */ 1166 1167 return (0); 1168} 1169 1170void 1171ctl_shutdown(void) 1172{ 1173 struct ctl_softc *softc; 1174 struct ctl_lun *lun, *next_lun; 1175 struct ctl_io_pool *pool; 1176 1177 softc = (struct ctl_softc *)control_softc; 1178 1179 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1180 printf("ctl: ioctl front end deregistration failed\n"); 1181 1182 mtx_lock(&softc->ctl_lock); 1183 1184 /* 1185 * Free up each LUN. 1186 */ 1187 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1188 next_lun = STAILQ_NEXT(lun, links); 1189 ctl_free_lun(lun); 1190 } 1191 1192 mtx_unlock(&softc->ctl_lock); 1193 1194 /* 1195 * This will rip the rug out from under any FETDs or anyone else 1196 * that has a pool allocated. Since we increment our module 1197 * refcount any time someone outside the main CTL module allocates 1198 * a pool, we shouldn't have any problems here. The user won't be 1199 * able to unload the CTL module until client modules have 1200 * successfully unloaded. 1201 */ 1202 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1203 ctl_pool_free(pool); 1204 1205#if 0 1206 ctl_shutdown_thread(softc->work_thread); 1207#endif 1208 1209 mtx_destroy(&softc->pool_lock); 1210 mtx_destroy(&softc->ctl_lock); 1211 1212 destroy_dev(softc->dev); 1213 1214 sysctl_ctx_free(&softc->sysctl_ctx); 1215 1216 free(control_softc, M_DEVBUF); 1217 control_softc = NULL; 1218 1219 if (bootverbose) 1220 printf("ctl: CAM Target Layer unloaded\n"); 1221} 1222 1223static int 1224ctl_module_event_handler(module_t mod, int what, void *arg) 1225{ 1226 1227 switch (what) { 1228 case MOD_LOAD: 1229 return (ctl_init()); 1230 case MOD_UNLOAD: 1231 return (EBUSY); 1232 default: 1233 return (EOPNOTSUPP); 1234 } 1235} 1236 1237/* 1238 * XXX KDM should we do some access checks here? Bump a reference count to 1239 * prevent a CTL module from being unloaded while someone has it open? 1240 */ 1241static int 1242ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1243{ 1244 return (0); 1245} 1246 1247static int 1248ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1249{ 1250 return (0); 1251} 1252 1253int 1254ctl_port_enable(ctl_port_type port_type) 1255{ 1256 struct ctl_softc *softc; 1257 struct ctl_frontend *fe; 1258 1259 if (ctl_is_single == 0) { 1260 union ctl_ha_msg msg_info; 1261 int isc_retval; 1262 1263#if 0 1264 printf("%s: HA mode, synchronizing frontend enable\n", 1265 __func__); 1266#endif 1267 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1268 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1269 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1270 printf("Sync msg send error retval %d\n", isc_retval); 1271 } 1272 if (!rcv_sync_msg) { 1273 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1274 sizeof(msg_info), 1); 1275 } 1276#if 0 1277 printf("CTL:Frontend Enable\n"); 1278 } else { 1279 printf("%s: single mode, skipping frontend synchronization\n", 1280 __func__); 1281#endif 1282 } 1283 1284 softc = control_softc; 1285 1286 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1287 if (port_type & fe->port_type) 1288 { 1289#if 0 1290 printf("port %d\n", fe->targ_port); 1291#endif 1292 ctl_frontend_online(fe); 1293 } 1294 } 1295 1296 return (0); 1297} 1298 1299int 1300ctl_port_disable(ctl_port_type port_type) 1301{ 1302 struct ctl_softc *softc; 1303 struct ctl_frontend *fe; 1304 1305 softc = control_softc; 1306 1307 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1308 if (port_type & fe->port_type) 1309 ctl_frontend_offline(fe); 1310 } 1311 1312 return (0); 1313} 1314 1315/* 1316 * Returns 0 for success, 1 for failure. 1317 * Currently the only failure mode is if there aren't enough entries 1318 * allocated. So, in case of a failure, look at num_entries_dropped, 1319 * reallocate and try again. 1320 */ 1321int 1322ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1323 int *num_entries_filled, int *num_entries_dropped, 1324 ctl_port_type port_type, int no_virtual) 1325{ 1326 struct ctl_softc *softc; 1327 struct ctl_frontend *fe; 1328 int entries_dropped, entries_filled; 1329 int retval; 1330 int i; 1331 1332 softc = control_softc; 1333 1334 retval = 0; 1335 entries_filled = 0; 1336 entries_dropped = 0; 1337 1338 i = 0; 1339 mtx_lock(&softc->ctl_lock); 1340 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1341 struct ctl_port_entry *entry; 1342 1343 if ((fe->port_type & port_type) == 0) 1344 continue; 1345 1346 if ((no_virtual != 0) 1347 && (fe->virtual_port != 0)) 1348 continue; 1349 1350 if (entries_filled >= num_entries_alloced) { 1351 entries_dropped++; 1352 continue; 1353 } 1354 entry = &entries[i]; 1355 1356 entry->port_type = fe->port_type; 1357 strlcpy(entry->port_name, fe->port_name, 1358 sizeof(entry->port_name)); 1359 entry->physical_port = fe->physical_port; 1360 entry->virtual_port = fe->virtual_port; 1361 entry->wwnn = fe->wwnn; 1362 entry->wwpn = fe->wwpn; 1363 1364 i++; 1365 entries_filled++; 1366 } 1367 1368 mtx_unlock(&softc->ctl_lock); 1369 1370 if (entries_dropped > 0) 1371 retval = 1; 1372 1373 *num_entries_dropped = entries_dropped; 1374 *num_entries_filled = entries_filled; 1375 1376 return (retval); 1377} 1378 1379static void 1380ctl_ioctl_online(void *arg) 1381{ 1382 struct ctl_ioctl_info *ioctl_info; 1383 1384 ioctl_info = (struct ctl_ioctl_info *)arg; 1385 1386 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1387} 1388 1389static void 1390ctl_ioctl_offline(void *arg) 1391{ 1392 struct ctl_ioctl_info *ioctl_info; 1393 1394 ioctl_info = (struct ctl_ioctl_info *)arg; 1395 1396 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1397} 1398 1399/* 1400 * Remove an initiator by port number and initiator ID. 1401 * Returns 0 for success, 1 for failure. 1402 */ 1403int 1404ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1405{ 1406 struct ctl_softc *softc; 1407 1408 softc = control_softc; 1409 1410 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1411 1412 if ((targ_port < 0) 1413 || (targ_port > CTL_MAX_PORTS)) { 1414 printf("%s: invalid port number %d\n", __func__, targ_port); 1415 return (1); 1416 } 1417 if (iid > CTL_MAX_INIT_PER_PORT) { 1418 printf("%s: initiator ID %u > maximun %u!\n", 1419 __func__, iid, CTL_MAX_INIT_PER_PORT); 1420 return (1); 1421 } 1422 1423 mtx_lock(&softc->ctl_lock); 1424 1425 softc->wwpn_iid[targ_port][iid].in_use = 0; 1426 1427 mtx_unlock(&softc->ctl_lock); 1428 1429 return (0); 1430} 1431 1432/* 1433 * Add an initiator to the initiator map. 1434 * Returns 0 for success, 1 for failure. 1435 */ 1436int 1437ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1438{ 1439 struct ctl_softc *softc; 1440 int retval; 1441 1442 softc = control_softc; 1443 1444 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1445 1446 retval = 0; 1447 1448 if ((targ_port < 0) 1449 || (targ_port > CTL_MAX_PORTS)) { 1450 printf("%s: invalid port number %d\n", __func__, targ_port); 1451 return (1); 1452 } 1453 if (iid > CTL_MAX_INIT_PER_PORT) { 1454 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1455 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1456 return (1); 1457 } 1458 1459 mtx_lock(&softc->ctl_lock); 1460 1461 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1462 /* 1463 * We don't treat this as an error. 1464 */ 1465 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1466 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1467 __func__, targ_port, iid, (uintmax_t)wwpn); 1468 goto bailout; 1469 } 1470 1471 /* 1472 * This is an error, but what do we do about it? The 1473 * driver is telling us we have a new WWPN for this 1474 * initiator ID, so we pretty much need to use it. 1475 */ 1476 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1477 "still at that address\n", __func__, targ_port, iid, 1478 (uintmax_t)wwpn, 1479 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1480 1481 /* 1482 * XXX KDM clear have_ca and ua_pending on each LUN for 1483 * this initiator. 1484 */ 1485 } 1486 softc->wwpn_iid[targ_port][iid].in_use = 1; 1487 softc->wwpn_iid[targ_port][iid].iid = iid; 1488 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1489 softc->wwpn_iid[targ_port][iid].port = targ_port; 1490 1491bailout: 1492 1493 mtx_unlock(&softc->ctl_lock); 1494 1495 return (retval); 1496} 1497 1498/* 1499 * XXX KDM should we pretend to do something in the target/lun 1500 * enable/disable functions? 1501 */ 1502static int 1503ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1504{ 1505 return (0); 1506} 1507 1508static int 1509ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1510{ 1511 return (0); 1512} 1513 1514static int 1515ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1516{ 1517 return (0); 1518} 1519 1520static int 1521ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1522{ 1523 return (0); 1524} 1525 1526/* 1527 * Data movement routine for the CTL ioctl frontend port. 1528 */ 1529static int 1530ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1531{ 1532 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1533 struct ctl_sg_entry ext_entry, kern_entry; 1534 int ext_sglen, ext_sg_entries, kern_sg_entries; 1535 int ext_sg_start, ext_offset; 1536 int len_to_copy, len_copied; 1537 int kern_watermark, ext_watermark; 1538 int ext_sglist_malloced; 1539 int i, j; 1540 1541 ext_sglist_malloced = 0; 1542 ext_sg_start = 0; 1543 ext_offset = 0; 1544 1545 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1546 1547 /* 1548 * If this flag is set, fake the data transfer. 1549 */ 1550 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1551 ctsio->ext_data_filled = ctsio->ext_data_len; 1552 goto bailout; 1553 } 1554 1555 /* 1556 * To simplify things here, if we have a single buffer, stick it in 1557 * a S/G entry and just make it a single entry S/G list. 1558 */ 1559 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1560 int len_seen; 1561 1562 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1563 1564 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1565 M_WAITOK); 1566 ext_sglist_malloced = 1; 1567 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1568 ext_sglen) != 0) { 1569 ctl_set_internal_failure(ctsio, 1570 /*sks_valid*/ 0, 1571 /*retry_count*/ 0); 1572 goto bailout; 1573 } 1574 ext_sg_entries = ctsio->ext_sg_entries; 1575 len_seen = 0; 1576 for (i = 0; i < ext_sg_entries; i++) { 1577 if ((len_seen + ext_sglist[i].len) >= 1578 ctsio->ext_data_filled) { 1579 ext_sg_start = i; 1580 ext_offset = ctsio->ext_data_filled - len_seen; 1581 break; 1582 } 1583 len_seen += ext_sglist[i].len; 1584 } 1585 } else { 1586 ext_sglist = &ext_entry; 1587 ext_sglist->addr = ctsio->ext_data_ptr; 1588 ext_sglist->len = ctsio->ext_data_len; 1589 ext_sg_entries = 1; 1590 ext_sg_start = 0; 1591 ext_offset = ctsio->ext_data_filled; 1592 } 1593 1594 if (ctsio->kern_sg_entries > 0) { 1595 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1596 kern_sg_entries = ctsio->kern_sg_entries; 1597 } else { 1598 kern_sglist = &kern_entry; 1599 kern_sglist->addr = ctsio->kern_data_ptr; 1600 kern_sglist->len = ctsio->kern_data_len; 1601 kern_sg_entries = 1; 1602 } 1603 1604 1605 kern_watermark = 0; 1606 ext_watermark = ext_offset; 1607 len_copied = 0; 1608 for (i = ext_sg_start, j = 0; 1609 i < ext_sg_entries && j < kern_sg_entries;) { 1610 uint8_t *ext_ptr, *kern_ptr; 1611 1612 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1613 kern_sglist[j].len - kern_watermark); 1614 1615 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1616 ext_ptr = ext_ptr + ext_watermark; 1617 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1618 /* 1619 * XXX KDM fix this! 1620 */ 1621 panic("need to implement bus address support"); 1622#if 0 1623 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1624#endif 1625 } else 1626 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1627 kern_ptr = kern_ptr + kern_watermark; 1628 1629 kern_watermark += len_to_copy; 1630 ext_watermark += len_to_copy; 1631 1632 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1633 CTL_FLAG_DATA_IN) { 1634 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1635 "bytes to user\n", len_to_copy)); 1636 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1637 "to %p\n", kern_ptr, ext_ptr)); 1638 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1639 ctl_set_internal_failure(ctsio, 1640 /*sks_valid*/ 0, 1641 /*retry_count*/ 0); 1642 goto bailout; 1643 } 1644 } else { 1645 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1646 "bytes from user\n", len_to_copy)); 1647 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1648 "to %p\n", ext_ptr, kern_ptr)); 1649 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1650 ctl_set_internal_failure(ctsio, 1651 /*sks_valid*/ 0, 1652 /*retry_count*/0); 1653 goto bailout; 1654 } 1655 } 1656 1657 len_copied += len_to_copy; 1658 1659 if (ext_sglist[i].len == ext_watermark) { 1660 i++; 1661 ext_watermark = 0; 1662 } 1663 1664 if (kern_sglist[j].len == kern_watermark) { 1665 j++; 1666 kern_watermark = 0; 1667 } 1668 } 1669 1670 ctsio->ext_data_filled += len_copied; 1671 1672 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1673 "kern_sg_entries: %d\n", ext_sg_entries, 1674 kern_sg_entries)); 1675 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1676 "kern_data_len = %d\n", ctsio->ext_data_len, 1677 ctsio->kern_data_len)); 1678 1679 1680 /* XXX KDM set residual?? */ 1681bailout: 1682 1683 if (ext_sglist_malloced != 0) 1684 free(ext_sglist, M_CTL); 1685 1686 return (CTL_RETVAL_COMPLETE); 1687} 1688 1689/* 1690 * Serialize a command that went down the "wrong" side, and so was sent to 1691 * this controller for execution. The logic is a little different than the 1692 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1693 * sent back to the other side, but in the success case, we execute the 1694 * command on this side (XFER mode) or tell the other side to execute it 1695 * (SER_ONLY mode). 1696 */ 1697static int 1698ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1699{ 1700 struct ctl_softc *ctl_softc; 1701 union ctl_ha_msg msg_info; 1702 struct ctl_lun *lun; 1703 int retval = 0; 1704 uint32_t targ_lun; 1705 1706 ctl_softc = control_softc; 1707 if (have_lock == 0) 1708 mtx_lock(&ctl_softc->ctl_lock); 1709 1710 targ_lun = ctsio->io_hdr.nexus.targ_lun; 1711 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 1712 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 1713 lun = ctl_softc->ctl_luns[targ_lun]; 1714 if (lun==NULL) 1715 { 1716 /* 1717 * Why isn't LUN defined? The other side wouldn't 1718 * send a cmd if the LUN is undefined. 1719 */ 1720 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1721 1722 /* "Logical unit not supported" */ 1723 ctl_set_sense_data(&msg_info.scsi.sense_data, 1724 lun, 1725 /*sense_format*/SSD_TYPE_NONE, 1726 /*current_error*/ 1, 1727 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1728 /*asc*/ 0x25, 1729 /*ascq*/ 0x00, 1730 SSD_ELEM_NONE); 1731 1732 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1733 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1734 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1735 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1736 msg_info.hdr.serializing_sc = NULL; 1737 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1738 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1739 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1740 } 1741 if (have_lock == 0) 1742 mtx_unlock(&ctl_softc->ctl_lock); 1743 return(1); 1744 1745 } 1746 1747 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1748 1749 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1750 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1751 ooa_links))) { 1752 case CTL_ACTION_BLOCK: 1753 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1754 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1755 blocked_links); 1756 break; 1757 case CTL_ACTION_PASS: 1758 case CTL_ACTION_SKIP: 1759 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1760 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1761 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1762 &ctsio->io_hdr, links); 1763 } else { 1764 1765 /* send msg back to other side */ 1766 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1767 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1768 msg_info.hdr.msg_type = CTL_MSG_R2R; 1769#if 0 1770 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1771#endif 1772 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1773 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1774 } 1775 } 1776 break; 1777 case CTL_ACTION_OVERLAP: 1778 /* OVERLAPPED COMMANDS ATTEMPTED */ 1779 ctl_set_sense_data(&msg_info.scsi.sense_data, 1780 lun, 1781 /*sense_format*/SSD_TYPE_NONE, 1782 /*current_error*/ 1, 1783 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1784 /*asc*/ 0x4E, 1785 /*ascq*/ 0x00, 1786 SSD_ELEM_NONE); 1787 1788 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1789 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1790 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1791 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1792 msg_info.hdr.serializing_sc = NULL; 1793 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1794#if 0 1795 printf("BAD JUJU:Major Bummer Overlap\n"); 1796#endif 1797 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1798 retval = 1; 1799 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1800 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1801 } 1802 break; 1803 case CTL_ACTION_OVERLAP_TAG: 1804 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1805 ctl_set_sense_data(&msg_info.scsi.sense_data, 1806 lun, 1807 /*sense_format*/SSD_TYPE_NONE, 1808 /*current_error*/ 1, 1809 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1810 /*asc*/ 0x4D, 1811 /*ascq*/ ctsio->tag_num & 0xff, 1812 SSD_ELEM_NONE); 1813 1814 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1815 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1816 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1817 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1818 msg_info.hdr.serializing_sc = NULL; 1819 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1820#if 0 1821 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1822#endif 1823 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1824 retval = 1; 1825 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1826 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1827 } 1828 break; 1829 case CTL_ACTION_ERROR: 1830 default: 1831 /* "Internal target failure" */ 1832 ctl_set_sense_data(&msg_info.scsi.sense_data, 1833 lun, 1834 /*sense_format*/SSD_TYPE_NONE, 1835 /*current_error*/ 1, 1836 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1837 /*asc*/ 0x44, 1838 /*ascq*/ 0x00, 1839 SSD_ELEM_NONE); 1840 1841 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1842 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1843 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1844 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1845 msg_info.hdr.serializing_sc = NULL; 1846 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1847#if 0 1848 printf("BAD JUJU:Major Bummer HW Error\n"); 1849#endif 1850 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1851 retval = 1; 1852 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1853 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1854 } 1855 break; 1856 } 1857 if (have_lock == 0) 1858 mtx_unlock(&ctl_softc->ctl_lock); 1859 return (retval); 1860} 1861 1862static int 1863ctl_ioctl_submit_wait(union ctl_io *io) 1864{ 1865 struct ctl_fe_ioctl_params params; 1866 ctl_fe_ioctl_state last_state; 1867 int done, retval; 1868 1869 retval = 0; 1870 1871 bzero(¶ms, sizeof(params)); 1872 1873 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1874 cv_init(¶ms.sem, "ctlioccv"); 1875 params.state = CTL_IOCTL_INPROG; 1876 last_state = params.state; 1877 1878 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1879 1880 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1881 1882 /* This shouldn't happen */ 1883 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1884 return (retval); 1885 1886 done = 0; 1887 1888 do { 1889 mtx_lock(¶ms.ioctl_mtx); 1890 /* 1891 * Check the state here, and don't sleep if the state has 1892 * already changed (i.e. wakeup has already occured, but we 1893 * weren't waiting yet). 1894 */ 1895 if (params.state == last_state) { 1896 /* XXX KDM cv_wait_sig instead? */ 1897 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1898 } 1899 last_state = params.state; 1900 1901 switch (params.state) { 1902 case CTL_IOCTL_INPROG: 1903 /* Why did we wake up? */ 1904 /* XXX KDM error here? */ 1905 mtx_unlock(¶ms.ioctl_mtx); 1906 break; 1907 case CTL_IOCTL_DATAMOVE: 1908 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1909 1910 /* 1911 * change last_state back to INPROG to avoid 1912 * deadlock on subsequent data moves. 1913 */ 1914 params.state = last_state = CTL_IOCTL_INPROG; 1915 1916 mtx_unlock(¶ms.ioctl_mtx); 1917 ctl_ioctl_do_datamove(&io->scsiio); 1918 /* 1919 * Note that in some cases, most notably writes, 1920 * this will queue the I/O and call us back later. 1921 * In other cases, generally reads, this routine 1922 * will immediately call back and wake us up, 1923 * probably using our own context. 1924 */ 1925 io->scsiio.be_move_done(io); 1926 break; 1927 case CTL_IOCTL_DONE: 1928 mtx_unlock(¶ms.ioctl_mtx); 1929 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1930 done = 1; 1931 break; 1932 default: 1933 mtx_unlock(¶ms.ioctl_mtx); 1934 /* XXX KDM error here? */ 1935 break; 1936 } 1937 } while (done == 0); 1938 1939 mtx_destroy(¶ms.ioctl_mtx); 1940 cv_destroy(¶ms.sem); 1941 1942 return (CTL_RETVAL_COMPLETE); 1943} 1944 1945static void 1946ctl_ioctl_datamove(union ctl_io *io) 1947{ 1948 struct ctl_fe_ioctl_params *params; 1949 1950 params = (struct ctl_fe_ioctl_params *) 1951 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1952 1953 mtx_lock(¶ms->ioctl_mtx); 1954 params->state = CTL_IOCTL_DATAMOVE; 1955 cv_broadcast(¶ms->sem); 1956 mtx_unlock(¶ms->ioctl_mtx); 1957} 1958 1959static void 1960ctl_ioctl_done(union ctl_io *io) 1961{ 1962 struct ctl_fe_ioctl_params *params; 1963 1964 params = (struct ctl_fe_ioctl_params *) 1965 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1966 1967 mtx_lock(¶ms->ioctl_mtx); 1968 params->state = CTL_IOCTL_DONE; 1969 cv_broadcast(¶ms->sem); 1970 mtx_unlock(¶ms->ioctl_mtx); 1971} 1972 1973static void 1974ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1975{ 1976 struct ctl_fe_ioctl_startstop_info *sd_info; 1977 1978 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1979 1980 sd_info->hs_info.status = metatask->status; 1981 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1982 sd_info->hs_info.luns_complete = 1983 metatask->taskinfo.startstop.luns_complete; 1984 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1985 1986 cv_broadcast(&sd_info->sem); 1987} 1988 1989static void 1990ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1991{ 1992 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1993 1994 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1995 1996 mtx_lock(fe_bbr_info->lock); 1997 fe_bbr_info->bbr_info->status = metatask->status; 1998 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1999 fe_bbr_info->wakeup_done = 1; 2000 mtx_unlock(fe_bbr_info->lock); 2001 2002 cv_broadcast(&fe_bbr_info->sem); 2003} 2004 2005/* 2006 * Returns 0 for success, errno for failure. 2007 */ 2008static int 2009ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 2010 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 2011{ 2012 union ctl_io *io; 2013 int retval; 2014 2015 retval = 0; 2016 2017 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 2018 2019 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 2020 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2021 ooa_links)) { 2022 struct ctl_ooa_entry *entry; 2023 2024 /* 2025 * If we've got more than we can fit, just count the 2026 * remaining entries. 2027 */ 2028 if (*cur_fill_num >= ooa_hdr->alloc_num) 2029 continue; 2030 2031 entry = &kern_entries[*cur_fill_num]; 2032 2033 entry->tag_num = io->scsiio.tag_num; 2034 entry->lun_num = lun->lun; 2035#ifdef CTL_TIME_IO 2036 entry->start_bt = io->io_hdr.start_bt; 2037#endif 2038 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 2039 entry->cdb_len = io->scsiio.cdb_len; 2040 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2041 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2042 2043 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2044 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 2045 2046 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2047 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2048 2049 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2050 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 2051 2052 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2053 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2054 } 2055 2056 return (retval); 2057} 2058 2059static void * 2060ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2061 size_t error_str_len) 2062{ 2063 void *kptr; 2064 2065 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2066 2067 if (copyin(user_addr, kptr, len) != 0) { 2068 snprintf(error_str, error_str_len, "Error copying %d bytes " 2069 "from user address %p to kernel address %p", len, 2070 user_addr, kptr); 2071 free(kptr, M_CTL); 2072 return (NULL); 2073 } 2074 2075 return (kptr); 2076} 2077 2078static void 2079ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2080{ 2081 int i; 2082 2083 if (be_args == NULL) 2084 return; 2085 2086 for (i = 0; i < num_be_args; i++) { 2087 free(be_args[i].kname, M_CTL); 2088 free(be_args[i].kvalue, M_CTL); 2089 } 2090 2091 free(be_args, M_CTL); 2092} 2093 2094static struct ctl_be_arg * 2095ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2096 char *error_str, size_t error_str_len) 2097{ 2098 struct ctl_be_arg *args; 2099 int i; 2100 2101 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2102 error_str, error_str_len); 2103 2104 if (args == NULL) 2105 goto bailout; 2106 2107 for (i = 0; i < num_be_args; i++) { 2108 args[i].kname = NULL; 2109 args[i].kvalue = NULL; 2110 } 2111 2112 for (i = 0; i < num_be_args; i++) { 2113 uint8_t *tmpptr; 2114 2115 args[i].kname = ctl_copyin_alloc(args[i].name, 2116 args[i].namelen, error_str, error_str_len); 2117 if (args[i].kname == NULL) 2118 goto bailout; 2119 2120 if (args[i].kname[args[i].namelen - 1] != '\0') { 2121 snprintf(error_str, error_str_len, "Argument %d " 2122 "name is not NUL-terminated", i); 2123 goto bailout; 2124 } 2125 2126 args[i].kvalue = NULL; 2127 2128 tmpptr = ctl_copyin_alloc(args[i].value, 2129 args[i].vallen, error_str, error_str_len); 2130 if (tmpptr == NULL) 2131 goto bailout; 2132 2133 args[i].kvalue = tmpptr; 2134 2135 if ((args[i].flags & CTL_BEARG_ASCII) 2136 && (tmpptr[args[i].vallen - 1] != '\0')) { 2137 snprintf(error_str, error_str_len, "Argument %d " 2138 "value is not NUL-terminated", i); 2139 goto bailout; 2140 } 2141 } 2142 2143 return (args); 2144bailout: 2145 2146 ctl_free_args(num_be_args, args); 2147 2148 return (NULL); 2149} 2150 2151/* 2152 * Escape characters that are illegal or not recommended in XML. 2153 */ 2154int 2155ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2156{ 2157 int retval; 2158 2159 retval = 0; 2160 2161 for (; *str; str++) { 2162 switch (*str) { 2163 case '&': 2164 retval = sbuf_printf(sb, "&"); 2165 break; 2166 case '>': 2167 retval = sbuf_printf(sb, ">"); 2168 break; 2169 case '<': 2170 retval = sbuf_printf(sb, "<"); 2171 break; 2172 default: 2173 retval = sbuf_putc(sb, *str); 2174 break; 2175 } 2176 2177 if (retval != 0) 2178 break; 2179 2180 } 2181 2182 return (retval); 2183} 2184 2185static int 2186ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2187 struct thread *td) 2188{ 2189 struct ctl_softc *softc; 2190 int retval; 2191 2192 softc = control_softc; 2193 2194 retval = 0; 2195 2196 switch (cmd) { 2197 case CTL_IO: { 2198 union ctl_io *io; 2199 void *pool_tmp; 2200 2201 /* 2202 * If we haven't been "enabled", don't allow any SCSI I/O 2203 * to this FETD. 2204 */ 2205 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2206 retval = -EPERM; 2207 break; 2208 } 2209 2210 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2211 if (io == NULL) { 2212 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2213 retval = -ENOSPC; 2214 break; 2215 } 2216 2217 /* 2218 * Need to save the pool reference so it doesn't get 2219 * spammed by the user's ctl_io. 2220 */ 2221 pool_tmp = io->io_hdr.pool; 2222 2223 memcpy(io, (void *)addr, sizeof(*io)); 2224 2225 io->io_hdr.pool = pool_tmp; 2226 /* 2227 * No status yet, so make sure the status is set properly. 2228 */ 2229 io->io_hdr.status = CTL_STATUS_NONE; 2230 2231 /* 2232 * The user sets the initiator ID, target and LUN IDs. 2233 */ 2234 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2235 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2236 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2237 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2238 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2239 2240 retval = ctl_ioctl_submit_wait(io); 2241 2242 if (retval != 0) { 2243 ctl_free_io(io); 2244 break; 2245 } 2246 2247 memcpy((void *)addr, io, sizeof(*io)); 2248 2249 /* return this to our pool */ 2250 ctl_free_io(io); 2251 2252 break; 2253 } 2254 case CTL_ENABLE_PORT: 2255 case CTL_DISABLE_PORT: 2256 case CTL_SET_PORT_WWNS: { 2257 struct ctl_frontend *fe; 2258 struct ctl_port_entry *entry; 2259 2260 entry = (struct ctl_port_entry *)addr; 2261 2262 mtx_lock(&softc->ctl_lock); 2263 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2264 int action, done; 2265 2266 action = 0; 2267 done = 0; 2268 2269 if ((entry->port_type == CTL_PORT_NONE) 2270 && (entry->targ_port == fe->targ_port)) { 2271 /* 2272 * If the user only wants to enable or 2273 * disable or set WWNs on a specific port, 2274 * do the operation and we're done. 2275 */ 2276 action = 1; 2277 done = 1; 2278 } else if (entry->port_type & fe->port_type) { 2279 /* 2280 * Compare the user's type mask with the 2281 * particular frontend type to see if we 2282 * have a match. 2283 */ 2284 action = 1; 2285 done = 0; 2286 2287 /* 2288 * Make sure the user isn't trying to set 2289 * WWNs on multiple ports at the same time. 2290 */ 2291 if (cmd == CTL_SET_PORT_WWNS) { 2292 printf("%s: Can't set WWNs on " 2293 "multiple ports\n", __func__); 2294 retval = EINVAL; 2295 break; 2296 } 2297 } 2298 if (action != 0) { 2299 /* 2300 * XXX KDM we have to drop the lock here, 2301 * because the online/offline operations 2302 * can potentially block. We need to 2303 * reference count the frontends so they 2304 * can't go away, 2305 */ 2306 mtx_unlock(&softc->ctl_lock); 2307 2308 if (cmd == CTL_ENABLE_PORT) { 2309 struct ctl_lun *lun; 2310 2311 STAILQ_FOREACH(lun, &softc->lun_list, 2312 links) { 2313 fe->lun_enable(fe->targ_lun_arg, 2314 lun->target, 2315 lun->lun); 2316 } 2317 2318 ctl_frontend_online(fe); 2319 } else if (cmd == CTL_DISABLE_PORT) { 2320 struct ctl_lun *lun; 2321 2322 ctl_frontend_offline(fe); 2323 2324 STAILQ_FOREACH(lun, &softc->lun_list, 2325 links) { 2326 fe->lun_disable( 2327 fe->targ_lun_arg, 2328 lun->target, 2329 lun->lun); 2330 } 2331 } 2332 2333 mtx_lock(&softc->ctl_lock); 2334 2335 if (cmd == CTL_SET_PORT_WWNS) 2336 ctl_frontend_set_wwns(fe, 2337 (entry->flags & CTL_PORT_WWNN_VALID) ? 2338 1 : 0, entry->wwnn, 2339 (entry->flags & CTL_PORT_WWPN_VALID) ? 2340 1 : 0, entry->wwpn); 2341 } 2342 if (done != 0) 2343 break; 2344 } 2345 mtx_unlock(&softc->ctl_lock); 2346 break; 2347 } 2348 case CTL_GET_PORT_LIST: { 2349 struct ctl_frontend *fe; 2350 struct ctl_port_list *list; 2351 int i; 2352 2353 list = (struct ctl_port_list *)addr; 2354 2355 if (list->alloc_len != (list->alloc_num * 2356 sizeof(struct ctl_port_entry))) { 2357 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2358 "alloc_num %u * sizeof(struct ctl_port_entry) " 2359 "%zu\n", __func__, list->alloc_len, 2360 list->alloc_num, sizeof(struct ctl_port_entry)); 2361 retval = EINVAL; 2362 break; 2363 } 2364 list->fill_len = 0; 2365 list->fill_num = 0; 2366 list->dropped_num = 0; 2367 i = 0; 2368 mtx_lock(&softc->ctl_lock); 2369 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2370 struct ctl_port_entry entry, *list_entry; 2371 2372 if (list->fill_num >= list->alloc_num) { 2373 list->dropped_num++; 2374 continue; 2375 } 2376 2377 entry.port_type = fe->port_type; 2378 strlcpy(entry.port_name, fe->port_name, 2379 sizeof(entry.port_name)); 2380 entry.targ_port = fe->targ_port; 2381 entry.physical_port = fe->physical_port; 2382 entry.virtual_port = fe->virtual_port; 2383 entry.wwnn = fe->wwnn; 2384 entry.wwpn = fe->wwpn; 2385 if (fe->status & CTL_PORT_STATUS_ONLINE) 2386 entry.online = 1; 2387 else 2388 entry.online = 0; 2389 2390 list_entry = &list->entries[i]; 2391 2392 retval = copyout(&entry, list_entry, sizeof(entry)); 2393 if (retval != 0) { 2394 printf("%s: CTL_GET_PORT_LIST: copyout " 2395 "returned %d\n", __func__, retval); 2396 break; 2397 } 2398 i++; 2399 list->fill_num++; 2400 list->fill_len += sizeof(entry); 2401 } 2402 mtx_unlock(&softc->ctl_lock); 2403 2404 /* 2405 * If this is non-zero, we had a copyout fault, so there's 2406 * probably no point in attempting to set the status inside 2407 * the structure. 2408 */ 2409 if (retval != 0) 2410 break; 2411 2412 if (list->dropped_num > 0) 2413 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2414 else 2415 list->status = CTL_PORT_LIST_OK; 2416 break; 2417 } 2418 case CTL_DUMP_OOA: { 2419 struct ctl_lun *lun; 2420 union ctl_io *io; 2421 char printbuf[128]; 2422 struct sbuf sb; 2423 2424 mtx_lock(&softc->ctl_lock); 2425 printf("Dumping OOA queues:\n"); 2426 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2427 for (io = (union ctl_io *)TAILQ_FIRST( 2428 &lun->ooa_queue); io != NULL; 2429 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2430 ooa_links)) { 2431 sbuf_new(&sb, printbuf, sizeof(printbuf), 2432 SBUF_FIXEDLEN); 2433 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2434 (intmax_t)lun->lun, 2435 io->scsiio.tag_num, 2436 (io->io_hdr.flags & 2437 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2438 (io->io_hdr.flags & 2439 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2440 (io->io_hdr.flags & 2441 CTL_FLAG_ABORT) ? " ABORT" : "", 2442 (io->io_hdr.flags & 2443 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2444 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2445 sbuf_finish(&sb); 2446 printf("%s\n", sbuf_data(&sb)); 2447 } 2448 } 2449 printf("OOA queues dump done\n"); 2450 mtx_unlock(&softc->ctl_lock); 2451 break; 2452 } 2453 case CTL_GET_OOA: { 2454 struct ctl_lun *lun; 2455 struct ctl_ooa *ooa_hdr; 2456 struct ctl_ooa_entry *entries; 2457 uint32_t cur_fill_num; 2458 2459 ooa_hdr = (struct ctl_ooa *)addr; 2460 2461 if ((ooa_hdr->alloc_len == 0) 2462 || (ooa_hdr->alloc_num == 0)) { 2463 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2464 "must be non-zero\n", __func__, 2465 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2466 retval = EINVAL; 2467 break; 2468 } 2469 2470 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2471 sizeof(struct ctl_ooa_entry))) { 2472 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2473 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2474 __func__, ooa_hdr->alloc_len, 2475 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2476 retval = EINVAL; 2477 break; 2478 } 2479 2480 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2481 if (entries == NULL) { 2482 printf("%s: could not allocate %d bytes for OOA " 2483 "dump\n", __func__, ooa_hdr->alloc_len); 2484 retval = ENOMEM; 2485 break; 2486 } 2487 2488 mtx_lock(&softc->ctl_lock); 2489 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2490 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2491 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2492 mtx_unlock(&softc->ctl_lock); 2493 free(entries, M_CTL); 2494 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2495 __func__, (uintmax_t)ooa_hdr->lun_num); 2496 retval = EINVAL; 2497 break; 2498 } 2499 2500 cur_fill_num = 0; 2501 2502 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2503 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2504 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2505 ooa_hdr, entries); 2506 if (retval != 0) 2507 break; 2508 } 2509 if (retval != 0) { 2510 mtx_unlock(&softc->ctl_lock); 2511 free(entries, M_CTL); 2512 break; 2513 } 2514 } else { 2515 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2516 2517 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2518 entries); 2519 } 2520 mtx_unlock(&softc->ctl_lock); 2521 2522 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2523 ooa_hdr->fill_len = ooa_hdr->fill_num * 2524 sizeof(struct ctl_ooa_entry); 2525 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2526 if (retval != 0) { 2527 printf("%s: error copying out %d bytes for OOA dump\n", 2528 __func__, ooa_hdr->fill_len); 2529 } 2530 2531 getbintime(&ooa_hdr->cur_bt); 2532 2533 if (cur_fill_num > ooa_hdr->alloc_num) { 2534 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2535 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2536 } else { 2537 ooa_hdr->dropped_num = 0; 2538 ooa_hdr->status = CTL_OOA_OK; 2539 } 2540 2541 free(entries, M_CTL); 2542 break; 2543 } 2544 case CTL_CHECK_OOA: { 2545 union ctl_io *io; 2546 struct ctl_lun *lun; 2547 struct ctl_ooa_info *ooa_info; 2548 2549 2550 ooa_info = (struct ctl_ooa_info *)addr; 2551 2552 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2553 ooa_info->status = CTL_OOA_INVALID_LUN; 2554 break; 2555 } 2556 mtx_lock(&softc->ctl_lock); 2557 lun = softc->ctl_luns[ooa_info->lun_id]; 2558 if (lun == NULL) { 2559 mtx_unlock(&softc->ctl_lock); 2560 ooa_info->status = CTL_OOA_INVALID_LUN; 2561 break; 2562 } 2563 2564 ooa_info->num_entries = 0; 2565 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2566 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2567 &io->io_hdr, ooa_links)) { 2568 ooa_info->num_entries++; 2569 } 2570 2571 mtx_unlock(&softc->ctl_lock); 2572 ooa_info->status = CTL_OOA_SUCCESS; 2573 2574 break; 2575 } 2576 case CTL_HARD_START: 2577 case CTL_HARD_STOP: { 2578 struct ctl_fe_ioctl_startstop_info ss_info; 2579 struct cfi_metatask *metatask; 2580 struct mtx hs_mtx; 2581 2582 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2583 2584 cv_init(&ss_info.sem, "hard start/stop cv" ); 2585 2586 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2587 if (metatask == NULL) { 2588 retval = ENOMEM; 2589 mtx_destroy(&hs_mtx); 2590 break; 2591 } 2592 2593 if (cmd == CTL_HARD_START) 2594 metatask->tasktype = CFI_TASK_STARTUP; 2595 else 2596 metatask->tasktype = CFI_TASK_SHUTDOWN; 2597 2598 metatask->callback = ctl_ioctl_hard_startstop_callback; 2599 metatask->callback_arg = &ss_info; 2600 2601 cfi_action(metatask); 2602 2603 /* Wait for the callback */ 2604 mtx_lock(&hs_mtx); 2605 cv_wait_sig(&ss_info.sem, &hs_mtx); 2606 mtx_unlock(&hs_mtx); 2607 2608 /* 2609 * All information has been copied from the metatask by the 2610 * time cv_broadcast() is called, so we free the metatask here. 2611 */ 2612 cfi_free_metatask(metatask); 2613 2614 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2615 2616 mtx_destroy(&hs_mtx); 2617 break; 2618 } 2619 case CTL_BBRREAD: { 2620 struct ctl_bbrread_info *bbr_info; 2621 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2622 struct mtx bbr_mtx; 2623 struct cfi_metatask *metatask; 2624 2625 bbr_info = (struct ctl_bbrread_info *)addr; 2626 2627 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2628 2629 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2630 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2631 2632 fe_bbr_info.bbr_info = bbr_info; 2633 fe_bbr_info.lock = &bbr_mtx; 2634 2635 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2636 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2637 2638 if (metatask == NULL) { 2639 mtx_destroy(&bbr_mtx); 2640 cv_destroy(&fe_bbr_info.sem); 2641 retval = ENOMEM; 2642 break; 2643 } 2644 metatask->tasktype = CFI_TASK_BBRREAD; 2645 metatask->callback = ctl_ioctl_bbrread_callback; 2646 metatask->callback_arg = &fe_bbr_info; 2647 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2648 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2649 metatask->taskinfo.bbrread.len = bbr_info->len; 2650 2651 cfi_action(metatask); 2652 2653 mtx_lock(&bbr_mtx); 2654 while (fe_bbr_info.wakeup_done == 0) 2655 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2656 mtx_unlock(&bbr_mtx); 2657 2658 bbr_info->status = metatask->status; 2659 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2660 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2661 memcpy(&bbr_info->sense_data, 2662 &metatask->taskinfo.bbrread.sense_data, 2663 ctl_min(sizeof(bbr_info->sense_data), 2664 sizeof(metatask->taskinfo.bbrread.sense_data))); 2665 2666 cfi_free_metatask(metatask); 2667 2668 mtx_destroy(&bbr_mtx); 2669 cv_destroy(&fe_bbr_info.sem); 2670 2671 break; 2672 } 2673 case CTL_DELAY_IO: { 2674 struct ctl_io_delay_info *delay_info; 2675#ifdef CTL_IO_DELAY 2676 struct ctl_lun *lun; 2677#endif /* CTL_IO_DELAY */ 2678 2679 delay_info = (struct ctl_io_delay_info *)addr; 2680 2681#ifdef CTL_IO_DELAY 2682 mtx_lock(&softc->ctl_lock); 2683 2684 if ((delay_info->lun_id > CTL_MAX_LUNS) 2685 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2686 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2687 } else { 2688 lun = softc->ctl_luns[delay_info->lun_id]; 2689 2690 delay_info->status = CTL_DELAY_STATUS_OK; 2691 2692 switch (delay_info->delay_type) { 2693 case CTL_DELAY_TYPE_CONT: 2694 break; 2695 case CTL_DELAY_TYPE_ONESHOT: 2696 break; 2697 default: 2698 delay_info->status = 2699 CTL_DELAY_STATUS_INVALID_TYPE; 2700 break; 2701 } 2702 2703 switch (delay_info->delay_loc) { 2704 case CTL_DELAY_LOC_DATAMOVE: 2705 lun->delay_info.datamove_type = 2706 delay_info->delay_type; 2707 lun->delay_info.datamove_delay = 2708 delay_info->delay_secs; 2709 break; 2710 case CTL_DELAY_LOC_DONE: 2711 lun->delay_info.done_type = 2712 delay_info->delay_type; 2713 lun->delay_info.done_delay = 2714 delay_info->delay_secs; 2715 break; 2716 default: 2717 delay_info->status = 2718 CTL_DELAY_STATUS_INVALID_LOC; 2719 break; 2720 } 2721 } 2722 2723 mtx_unlock(&softc->ctl_lock); 2724#else 2725 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2726#endif /* CTL_IO_DELAY */ 2727 break; 2728 } 2729 case CTL_REALSYNC_SET: { 2730 int *syncstate; 2731 2732 syncstate = (int *)addr; 2733 2734 mtx_lock(&softc->ctl_lock); 2735 switch (*syncstate) { 2736 case 0: 2737 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2738 break; 2739 case 1: 2740 softc->flags |= CTL_FLAG_REAL_SYNC; 2741 break; 2742 default: 2743 retval = -EINVAL; 2744 break; 2745 } 2746 mtx_unlock(&softc->ctl_lock); 2747 break; 2748 } 2749 case CTL_REALSYNC_GET: { 2750 int *syncstate; 2751 2752 syncstate = (int*)addr; 2753 2754 mtx_lock(&softc->ctl_lock); 2755 if (softc->flags & CTL_FLAG_REAL_SYNC) 2756 *syncstate = 1; 2757 else 2758 *syncstate = 0; 2759 mtx_unlock(&softc->ctl_lock); 2760 2761 break; 2762 } 2763 case CTL_SETSYNC: 2764 case CTL_GETSYNC: { 2765 struct ctl_sync_info *sync_info; 2766 struct ctl_lun *lun; 2767 2768 sync_info = (struct ctl_sync_info *)addr; 2769 2770 mtx_lock(&softc->ctl_lock); 2771 lun = softc->ctl_luns[sync_info->lun_id]; 2772 if (lun == NULL) { 2773 mtx_unlock(&softc->ctl_lock); 2774 sync_info->status = CTL_GS_SYNC_NO_LUN; 2775 } 2776 /* 2777 * Get or set the sync interval. We're not bounds checking 2778 * in the set case, hopefully the user won't do something 2779 * silly. 2780 */ 2781 if (cmd == CTL_GETSYNC) 2782 sync_info->sync_interval = lun->sync_interval; 2783 else 2784 lun->sync_interval = sync_info->sync_interval; 2785 2786 mtx_unlock(&softc->ctl_lock); 2787 2788 sync_info->status = CTL_GS_SYNC_OK; 2789 2790 break; 2791 } 2792 case CTL_GETSTATS: { 2793 struct ctl_stats *stats; 2794 struct ctl_lun *lun; 2795 int i; 2796 2797 stats = (struct ctl_stats *)addr; 2798 2799 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2800 stats->alloc_len) { 2801 stats->status = CTL_SS_NEED_MORE_SPACE; 2802 stats->num_luns = softc->num_luns; 2803 break; 2804 } 2805 /* 2806 * XXX KDM no locking here. If the LUN list changes, 2807 * things can blow up. 2808 */ 2809 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2810 i++, lun = STAILQ_NEXT(lun, links)) { 2811 retval = copyout(&lun->stats, &stats->lun_stats[i], 2812 sizeof(lun->stats)); 2813 if (retval != 0) 2814 break; 2815 } 2816 stats->num_luns = softc->num_luns; 2817 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2818 softc->num_luns; 2819 stats->status = CTL_SS_OK; 2820#ifdef CTL_TIME_IO 2821 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2822#else 2823 stats->flags = CTL_STATS_FLAG_NONE; 2824#endif 2825 getnanouptime(&stats->timestamp); 2826 break; 2827 } 2828 case CTL_ERROR_INJECT: { 2829 struct ctl_error_desc *err_desc, *new_err_desc; 2830 struct ctl_lun *lun; 2831 2832 err_desc = (struct ctl_error_desc *)addr; 2833 2834 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2835 M_WAITOK | M_ZERO); 2836 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2837 2838 mtx_lock(&softc->ctl_lock); 2839 lun = softc->ctl_luns[err_desc->lun_id]; 2840 if (lun == NULL) { 2841 mtx_unlock(&softc->ctl_lock); 2842 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2843 __func__, (uintmax_t)err_desc->lun_id); 2844 retval = EINVAL; 2845 break; 2846 } 2847 2848 /* 2849 * We could do some checking here to verify the validity 2850 * of the request, but given the complexity of error 2851 * injection requests, the checking logic would be fairly 2852 * complex. 2853 * 2854 * For now, if the request is invalid, it just won't get 2855 * executed and might get deleted. 2856 */ 2857 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2858 2859 /* 2860 * XXX KDM check to make sure the serial number is unique, 2861 * in case we somehow manage to wrap. That shouldn't 2862 * happen for a very long time, but it's the right thing to 2863 * do. 2864 */ 2865 new_err_desc->serial = lun->error_serial; 2866 err_desc->serial = lun->error_serial; 2867 lun->error_serial++; 2868 2869 mtx_unlock(&softc->ctl_lock); 2870 break; 2871 } 2872 case CTL_ERROR_INJECT_DELETE: { 2873 struct ctl_error_desc *delete_desc, *desc, *desc2; 2874 struct ctl_lun *lun; 2875 int delete_done; 2876 2877 delete_desc = (struct ctl_error_desc *)addr; 2878 delete_done = 0; 2879 2880 mtx_lock(&softc->ctl_lock); 2881 lun = softc->ctl_luns[delete_desc->lun_id]; 2882 if (lun == NULL) { 2883 mtx_unlock(&softc->ctl_lock); 2884 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2885 __func__, (uintmax_t)delete_desc->lun_id); 2886 retval = EINVAL; 2887 break; 2888 } 2889 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2890 if (desc->serial != delete_desc->serial) 2891 continue; 2892 2893 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2894 links); 2895 free(desc, M_CTL); 2896 delete_done = 1; 2897 } 2898 mtx_unlock(&softc->ctl_lock); 2899 if (delete_done == 0) { 2900 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2901 "error serial %ju on LUN %u\n", __func__, 2902 delete_desc->serial, delete_desc->lun_id); 2903 retval = EINVAL; 2904 break; 2905 } 2906 break; 2907 } 2908 case CTL_DUMP_STRUCTS: { 2909 int i, j, k; 2910 struct ctl_frontend *fe; 2911 2912 printf("CTL IID to WWPN map start:\n"); 2913 for (i = 0; i < CTL_MAX_PORTS; i++) { 2914 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2915 if (softc->wwpn_iid[i][j].in_use == 0) 2916 continue; 2917 2918 printf("port %d iid %u WWPN %#jx\n", 2919 softc->wwpn_iid[i][j].port, 2920 softc->wwpn_iid[i][j].iid, 2921 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2922 } 2923 } 2924 printf("CTL IID to WWPN map end\n"); 2925 printf("CTL Persistent Reservation information start:\n"); 2926 for (i = 0; i < CTL_MAX_LUNS; i++) { 2927 struct ctl_lun *lun; 2928 2929 lun = softc->ctl_luns[i]; 2930 2931 if ((lun == NULL) 2932 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2933 continue; 2934 2935 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2936 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2937 if (lun->per_res[j+k].registered == 0) 2938 continue; 2939 printf("LUN %d port %d iid %d key " 2940 "%#jx\n", i, j, k, 2941 (uintmax_t)scsi_8btou64( 2942 lun->per_res[j+k].res_key.key)); 2943 } 2944 } 2945 } 2946 printf("CTL Persistent Reservation information end\n"); 2947 printf("CTL Frontends:\n"); 2948 /* 2949 * XXX KDM calling this without a lock. We'd likely want 2950 * to drop the lock before calling the frontend's dump 2951 * routine anyway. 2952 */ 2953 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2954 printf("Frontend %s Type %u pport %d vport %d WWNN " 2955 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2956 fe->physical_port, fe->virtual_port, 2957 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2958 2959 /* 2960 * Frontends are not required to support the dump 2961 * routine. 2962 */ 2963 if (fe->fe_dump == NULL) 2964 continue; 2965 2966 fe->fe_dump(); 2967 } 2968 printf("CTL Frontend information end\n"); 2969 break; 2970 } 2971 case CTL_LUN_REQ: { 2972 struct ctl_lun_req *lun_req; 2973 struct ctl_backend_driver *backend; 2974 2975 lun_req = (struct ctl_lun_req *)addr; 2976 2977 backend = ctl_backend_find(lun_req->backend); 2978 if (backend == NULL) { 2979 lun_req->status = CTL_LUN_ERROR; 2980 snprintf(lun_req->error_str, 2981 sizeof(lun_req->error_str), 2982 "Backend \"%s\" not found.", 2983 lun_req->backend); 2984 break; 2985 } 2986 if (lun_req->num_be_args > 0) { 2987 lun_req->kern_be_args = ctl_copyin_args( 2988 lun_req->num_be_args, 2989 lun_req->be_args, 2990 lun_req->error_str, 2991 sizeof(lun_req->error_str)); 2992 if (lun_req->kern_be_args == NULL) { 2993 lun_req->status = CTL_LUN_ERROR; 2994 break; 2995 } 2996 } 2997 2998 retval = backend->ioctl(dev, cmd, addr, flag, td); 2999 3000 if (lun_req->num_be_args > 0) { 3001 ctl_free_args(lun_req->num_be_args, 3002 lun_req->kern_be_args); 3003 } 3004 break; 3005 } 3006 case CTL_LUN_LIST: { 3007 struct sbuf *sb; 3008 struct ctl_lun *lun; 3009 struct ctl_lun_list *list; 3010 struct ctl_be_lun_option *opt; 3011 3012 list = (struct ctl_lun_list *)addr; 3013 3014 /* 3015 * Allocate a fixed length sbuf here, based on the length 3016 * of the user's buffer. We could allocate an auto-extending 3017 * buffer, and then tell the user how much larger our 3018 * amount of data is than his buffer, but that presents 3019 * some problems: 3020 * 3021 * 1. The sbuf(9) routines use a blocking malloc, and so 3022 * we can't hold a lock while calling them with an 3023 * auto-extending buffer. 3024 * 3025 * 2. There is not currently a LUN reference counting 3026 * mechanism, outside of outstanding transactions on 3027 * the LUN's OOA queue. So a LUN could go away on us 3028 * while we're getting the LUN number, backend-specific 3029 * information, etc. Thus, given the way things 3030 * currently work, we need to hold the CTL lock while 3031 * grabbing LUN information. 3032 * 3033 * So, from the user's standpoint, the best thing to do is 3034 * allocate what he thinks is a reasonable buffer length, 3035 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3036 * double the buffer length and try again. (And repeat 3037 * that until he succeeds.) 3038 */ 3039 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3040 if (sb == NULL) { 3041 list->status = CTL_LUN_LIST_ERROR; 3042 snprintf(list->error_str, sizeof(list->error_str), 3043 "Unable to allocate %d bytes for LUN list", 3044 list->alloc_len); 3045 break; 3046 } 3047 3048 sbuf_printf(sb, "<ctllunlist>\n"); 3049 3050 mtx_lock(&softc->ctl_lock); 3051 3052 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3053 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3054 (uintmax_t)lun->lun); 3055 3056 /* 3057 * Bail out as soon as we see that we've overfilled 3058 * the buffer. 3059 */ 3060 if (retval != 0) 3061 break; 3062 3063 retval = sbuf_printf(sb, "<backend_type>%s" 3064 "</backend_type>\n", 3065 (lun->backend == NULL) ? "none" : 3066 lun->backend->name); 3067 3068 if (retval != 0) 3069 break; 3070 3071 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3072 lun->be_lun->lun_type); 3073 3074 if (retval != 0) 3075 break; 3076 3077 if (lun->backend == NULL) { 3078 retval = sbuf_printf(sb, "</lun>\n"); 3079 if (retval != 0) 3080 break; 3081 continue; 3082 } 3083 3084 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3085 (lun->be_lun->maxlba > 0) ? 3086 lun->be_lun->maxlba + 1 : 0); 3087 3088 if (retval != 0) 3089 break; 3090 3091 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3092 lun->be_lun->blocksize); 3093 3094 if (retval != 0) 3095 break; 3096 3097 retval = sbuf_printf(sb, "<serial_number>"); 3098 3099 if (retval != 0) 3100 break; 3101 3102 retval = ctl_sbuf_printf_esc(sb, 3103 lun->be_lun->serial_num); 3104 3105 if (retval != 0) 3106 break; 3107 3108 retval = sbuf_printf(sb, "</serial_number>\n"); 3109 3110 if (retval != 0) 3111 break; 3112 3113 retval = sbuf_printf(sb, "<device_id>"); 3114 3115 if (retval != 0) 3116 break; 3117 3118 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3119 3120 if (retval != 0) 3121 break; 3122 3123 retval = sbuf_printf(sb, "</device_id>\n"); 3124 3125 if (retval != 0) 3126 break; 3127 3128 if (lun->backend->lun_info != NULL) { 3129 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3130 if (retval != 0) 3131 break; 3132 } 3133 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3134 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3135 if (retval != 0) 3136 break; 3137 } 3138 3139 retval = sbuf_printf(sb, "</lun>\n"); 3140 3141 if (retval != 0) 3142 break; 3143 } 3144 mtx_unlock(&softc->ctl_lock); 3145 3146 if ((retval != 0) 3147 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3148 retval = 0; 3149 sbuf_delete(sb); 3150 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3151 snprintf(list->error_str, sizeof(list->error_str), 3152 "Out of space, %d bytes is too small", 3153 list->alloc_len); 3154 break; 3155 } 3156 3157 sbuf_finish(sb); 3158 3159 retval = copyout(sbuf_data(sb), list->lun_xml, 3160 sbuf_len(sb) + 1); 3161 3162 list->fill_len = sbuf_len(sb) + 1; 3163 list->status = CTL_LUN_LIST_OK; 3164 sbuf_delete(sb); 3165 break; 3166 } 3167 case CTL_ISCSI: { 3168 struct ctl_iscsi *ci; 3169 struct ctl_frontend *fe; 3170 3171 ci = (struct ctl_iscsi *)addr; 3172 3173 mtx_lock(&softc->ctl_lock); 3174 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3175 if (strcmp(fe->port_name, "iscsi") == 0) 3176 break; 3177 } 3178 mtx_unlock(&softc->ctl_lock); 3179 3180 if (fe == NULL) { 3181 ci->status = CTL_ISCSI_ERROR; 3182 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3183 break; 3184 } 3185 3186 retval = fe->ioctl(dev, cmd, addr, flag, td); 3187 break; 3188 } 3189 default: { 3190 /* XXX KDM should we fix this? */ 3191#if 0 3192 struct ctl_backend_driver *backend; 3193 unsigned int type; 3194 int found; 3195 3196 found = 0; 3197 3198 /* 3199 * We encode the backend type as the ioctl type for backend 3200 * ioctls. So parse it out here, and then search for a 3201 * backend of this type. 3202 */ 3203 type = _IOC_TYPE(cmd); 3204 3205 STAILQ_FOREACH(backend, &softc->be_list, links) { 3206 if (backend->type == type) { 3207 found = 1; 3208 break; 3209 } 3210 } 3211 if (found == 0) { 3212 printf("ctl: unknown ioctl command %#lx or backend " 3213 "%d\n", cmd, type); 3214 retval = -EINVAL; 3215 break; 3216 } 3217 retval = backend->ioctl(dev, cmd, addr, flag, td); 3218#endif 3219 retval = ENOTTY; 3220 break; 3221 } 3222 } 3223 return (retval); 3224} 3225 3226uint32_t 3227ctl_get_initindex(struct ctl_nexus *nexus) 3228{ 3229 if (nexus->targ_port < CTL_MAX_PORTS) 3230 return (nexus->initid.id + 3231 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3232 else 3233 return (nexus->initid.id + 3234 ((nexus->targ_port - CTL_MAX_PORTS) * 3235 CTL_MAX_INIT_PER_PORT)); 3236} 3237 3238uint32_t 3239ctl_get_resindex(struct ctl_nexus *nexus) 3240{ 3241 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3242} 3243 3244uint32_t 3245ctl_port_idx(int port_num) 3246{ 3247 if (port_num < CTL_MAX_PORTS) 3248 return(port_num); 3249 else 3250 return(port_num - CTL_MAX_PORTS); 3251} 3252 3253/* 3254 * Note: This only works for bitmask sizes that are at least 32 bits, and 3255 * that are a power of 2. 3256 */ 3257int 3258ctl_ffz(uint32_t *mask, uint32_t size) 3259{ 3260 uint32_t num_chunks, num_pieces; 3261 int i, j; 3262 3263 num_chunks = (size >> 5); 3264 if (num_chunks == 0) 3265 num_chunks++; 3266 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3267 3268 for (i = 0; i < num_chunks; i++) { 3269 for (j = 0; j < num_pieces; j++) { 3270 if ((mask[i] & (1 << j)) == 0) 3271 return ((i << 5) + j); 3272 } 3273 } 3274 3275 return (-1); 3276} 3277 3278int 3279ctl_set_mask(uint32_t *mask, uint32_t bit) 3280{ 3281 uint32_t chunk, piece; 3282 3283 chunk = bit >> 5; 3284 piece = bit % (sizeof(uint32_t) * 8); 3285 3286 if ((mask[chunk] & (1 << piece)) != 0) 3287 return (-1); 3288 else 3289 mask[chunk] |= (1 << piece); 3290 3291 return (0); 3292} 3293 3294int 3295ctl_clear_mask(uint32_t *mask, uint32_t bit) 3296{ 3297 uint32_t chunk, piece; 3298 3299 chunk = bit >> 5; 3300 piece = bit % (sizeof(uint32_t) * 8); 3301 3302 if ((mask[chunk] & (1 << piece)) == 0) 3303 return (-1); 3304 else 3305 mask[chunk] &= ~(1 << piece); 3306 3307 return (0); 3308} 3309 3310int 3311ctl_is_set(uint32_t *mask, uint32_t bit) 3312{ 3313 uint32_t chunk, piece; 3314 3315 chunk = bit >> 5; 3316 piece = bit % (sizeof(uint32_t) * 8); 3317 3318 if ((mask[chunk] & (1 << piece)) == 0) 3319 return (0); 3320 else 3321 return (1); 3322} 3323 3324#ifdef unused 3325/* 3326 * The bus, target and lun are optional, they can be filled in later. 3327 * can_wait is used to determine whether we can wait on the malloc or not. 3328 */ 3329union ctl_io* 3330ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3331 uint32_t targ_lun, int can_wait) 3332{ 3333 union ctl_io *io; 3334 3335 if (can_wait) 3336 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3337 else 3338 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3339 3340 if (io != NULL) { 3341 io->io_hdr.io_type = io_type; 3342 io->io_hdr.targ_port = targ_port; 3343 /* 3344 * XXX KDM this needs to change/go away. We need to move 3345 * to a preallocated pool of ctl_scsiio structures. 3346 */ 3347 io->io_hdr.nexus.targ_target.id = targ_target; 3348 io->io_hdr.nexus.targ_lun = targ_lun; 3349 } 3350 3351 return (io); 3352} 3353 3354void 3355ctl_kfree_io(union ctl_io *io) 3356{ 3357 free(io, M_CTL); 3358} 3359#endif /* unused */ 3360 3361/* 3362 * ctl_softc, pool_type, total_ctl_io are passed in. 3363 * npool is passed out. 3364 */ 3365int 3366ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3367 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3368{ 3369 uint32_t i; 3370 union ctl_io *cur_io, *next_io; 3371 struct ctl_io_pool *pool; 3372 int retval; 3373 3374 retval = 0; 3375 3376 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3377 M_NOWAIT | M_ZERO); 3378 if (pool == NULL) { 3379 retval = -ENOMEM; 3380 goto bailout; 3381 } 3382 3383 pool->type = pool_type; 3384 pool->ctl_softc = ctl_softc; 3385 3386 mtx_lock(&ctl_softc->pool_lock); 3387 pool->id = ctl_softc->cur_pool_id++; 3388 mtx_unlock(&ctl_softc->pool_lock); 3389 3390 pool->flags = CTL_POOL_FLAG_NONE; 3391 pool->refcount = 1; /* Reference for validity. */ 3392 STAILQ_INIT(&pool->free_queue); 3393 3394 /* 3395 * XXX KDM other options here: 3396 * - allocate a page at a time 3397 * - allocate one big chunk of memory. 3398 * Page allocation might work well, but would take a little more 3399 * tracking. 3400 */ 3401 for (i = 0; i < total_ctl_io; i++) { 3402 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3403 M_NOWAIT); 3404 if (cur_io == NULL) { 3405 retval = ENOMEM; 3406 break; 3407 } 3408 cur_io->io_hdr.pool = pool; 3409 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3410 pool->total_ctl_io++; 3411 pool->free_ctl_io++; 3412 } 3413 3414 if (retval != 0) { 3415 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3416 cur_io != NULL; cur_io = next_io) { 3417 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3418 links); 3419 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3420 ctl_io_hdr, links); 3421 free(cur_io, M_CTL); 3422 } 3423 3424 free(pool, M_CTL); 3425 goto bailout; 3426 } 3427 mtx_lock(&ctl_softc->pool_lock); 3428 ctl_softc->num_pools++; 3429 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3430 /* 3431 * Increment our usage count if this is an external consumer, so we 3432 * can't get unloaded until the external consumer (most likely a 3433 * FETD) unloads and frees his pool. 3434 * 3435 * XXX KDM will this increment the caller's module use count, or 3436 * mine? 3437 */ 3438#if 0 3439 if ((pool_type != CTL_POOL_EMERGENCY) 3440 && (pool_type != CTL_POOL_INTERNAL) 3441 && (pool_type != CTL_POOL_IOCTL) 3442 && (pool_type != CTL_POOL_4OTHERSC)) 3443 MOD_INC_USE_COUNT; 3444#endif 3445 3446 mtx_unlock(&ctl_softc->pool_lock); 3447 3448 *npool = pool; 3449 3450bailout: 3451 3452 return (retval); 3453} 3454 3455static int 3456ctl_pool_acquire(struct ctl_io_pool *pool) 3457{ 3458 3459 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3460 3461 if (pool->flags & CTL_POOL_FLAG_INVALID) 3462 return (-EINVAL); 3463 3464 pool->refcount++; 3465 3466 return (0); 3467} 3468 3469static void 3470ctl_pool_release(struct ctl_io_pool *pool) 3471{ 3472 struct ctl_softc *ctl_softc = pool->ctl_softc; 3473 union ctl_io *io; 3474 3475 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3476 3477 if (--pool->refcount != 0) 3478 return; 3479 3480 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3481 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3482 links); 3483 free(io, M_CTL); 3484 } 3485 3486 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3487 ctl_softc->num_pools--; 3488 3489 /* 3490 * XXX KDM will this decrement the caller's usage count or mine? 3491 */ 3492#if 0 3493 if ((pool->type != CTL_POOL_EMERGENCY) 3494 && (pool->type != CTL_POOL_INTERNAL) 3495 && (pool->type != CTL_POOL_IOCTL)) 3496 MOD_DEC_USE_COUNT; 3497#endif 3498 3499 free(pool, M_CTL); 3500} 3501 3502void 3503ctl_pool_free(struct ctl_io_pool *pool) 3504{ 3505 struct ctl_softc *ctl_softc; 3506 3507 if (pool == NULL) 3508 return; 3509 3510 ctl_softc = pool->ctl_softc; 3511 mtx_lock(&ctl_softc->pool_lock); 3512 pool->flags |= CTL_POOL_FLAG_INVALID; 3513 ctl_pool_release(pool); 3514 mtx_unlock(&ctl_softc->pool_lock); 3515} 3516 3517/* 3518 * This routine does not block (except for spinlocks of course). 3519 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3520 * possible. 3521 */ 3522union ctl_io * 3523ctl_alloc_io(void *pool_ref) 3524{ 3525 union ctl_io *io; 3526 struct ctl_softc *ctl_softc; 3527 struct ctl_io_pool *pool, *npool; 3528 struct ctl_io_pool *emergency_pool; 3529 3530 pool = (struct ctl_io_pool *)pool_ref; 3531 3532 if (pool == NULL) { 3533 printf("%s: pool is NULL\n", __func__); 3534 return (NULL); 3535 } 3536 3537 emergency_pool = NULL; 3538 3539 ctl_softc = pool->ctl_softc; 3540 3541 mtx_lock(&ctl_softc->pool_lock); 3542 /* 3543 * First, try to get the io structure from the user's pool. 3544 */ 3545 if (ctl_pool_acquire(pool) == 0) { 3546 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3547 if (io != NULL) { 3548 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3549 pool->total_allocated++; 3550 pool->free_ctl_io--; 3551 mtx_unlock(&ctl_softc->pool_lock); 3552 return (io); 3553 } else 3554 ctl_pool_release(pool); 3555 } 3556 /* 3557 * If he doesn't have any io structures left, search for an 3558 * emergency pool and grab one from there. 3559 */ 3560 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3561 if (npool->type != CTL_POOL_EMERGENCY) 3562 continue; 3563 3564 if (ctl_pool_acquire(npool) != 0) 3565 continue; 3566 3567 emergency_pool = npool; 3568 3569 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3570 if (io != NULL) { 3571 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3572 npool->total_allocated++; 3573 npool->free_ctl_io--; 3574 mtx_unlock(&ctl_softc->pool_lock); 3575 return (io); 3576 } else 3577 ctl_pool_release(npool); 3578 } 3579 3580 /* Drop the spinlock before we malloc */ 3581 mtx_unlock(&ctl_softc->pool_lock); 3582 3583 /* 3584 * The emergency pool (if it exists) didn't have one, so try an 3585 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3586 */ 3587 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3588 if (io != NULL) { 3589 /* 3590 * If the emergency pool exists but is empty, add this 3591 * ctl_io to its list when it gets freed. 3592 */ 3593 if (emergency_pool != NULL) { 3594 mtx_lock(&ctl_softc->pool_lock); 3595 if (ctl_pool_acquire(emergency_pool) == 0) { 3596 io->io_hdr.pool = emergency_pool; 3597 emergency_pool->total_ctl_io++; 3598 /* 3599 * Need to bump this, otherwise 3600 * total_allocated and total_freed won't 3601 * match when we no longer have anything 3602 * outstanding. 3603 */ 3604 emergency_pool->total_allocated++; 3605 } 3606 mtx_unlock(&ctl_softc->pool_lock); 3607 } else 3608 io->io_hdr.pool = NULL; 3609 } 3610 3611 return (io); 3612} 3613 3614void 3615ctl_free_io(union ctl_io *io) 3616{ 3617 if (io == NULL) 3618 return; 3619 3620 /* 3621 * If this ctl_io has a pool, return it to that pool. 3622 */ 3623 if (io->io_hdr.pool != NULL) { 3624 struct ctl_io_pool *pool; 3625#if 0 3626 struct ctl_softc *ctl_softc; 3627 union ctl_io *tmp_io; 3628 unsigned long xflags; 3629 int i; 3630 3631 ctl_softc = control_softc; 3632#endif 3633 3634 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3635 3636 mtx_lock(&pool->ctl_softc->pool_lock); 3637#if 0 3638 save_flags(xflags); 3639 3640 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3641 &ctl_softc->task_queue); tmp_io != NULL; i++, 3642 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3643 links)) { 3644 if (tmp_io == io) { 3645 printf("%s: %p is still on the task queue!\n", 3646 __func__, tmp_io); 3647 printf("%s: (%d): type %d " 3648 "msg %d cdb %x iptl: " 3649 "%d:%d:%d:%d tag 0x%04x " 3650 "flg %#lx\n", 3651 __func__, i, 3652 tmp_io->io_hdr.io_type, 3653 tmp_io->io_hdr.msg_type, 3654 tmp_io->scsiio.cdb[0], 3655 tmp_io->io_hdr.nexus.initid.id, 3656 tmp_io->io_hdr.nexus.targ_port, 3657 tmp_io->io_hdr.nexus.targ_target.id, 3658 tmp_io->io_hdr.nexus.targ_lun, 3659 (tmp_io->io_hdr.io_type == 3660 CTL_IO_TASK) ? 3661 tmp_io->taskio.tag_num : 3662 tmp_io->scsiio.tag_num, 3663 xflags); 3664 panic("I/O still on the task queue!"); 3665 } 3666 } 3667#endif 3668 io->io_hdr.io_type = 0xff; 3669 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3670 pool->total_freed++; 3671 pool->free_ctl_io++; 3672 ctl_pool_release(pool); 3673 mtx_unlock(&pool->ctl_softc->pool_lock); 3674 } else { 3675 /* 3676 * Otherwise, just free it. We probably malloced it and 3677 * the emergency pool wasn't available. 3678 */ 3679 free(io, M_CTL); 3680 } 3681 3682} 3683 3684void 3685ctl_zero_io(union ctl_io *io) 3686{ 3687 void *pool_ref; 3688 3689 if (io == NULL) 3690 return; 3691 3692 /* 3693 * May need to preserve linked list pointers at some point too. 3694 */ 3695 pool_ref = io->io_hdr.pool; 3696 3697 memset(io, 0, sizeof(*io)); 3698 3699 io->io_hdr.pool = pool_ref; 3700} 3701 3702/* 3703 * This routine is currently used for internal copies of ctl_ios that need 3704 * to persist for some reason after we've already returned status to the 3705 * FETD. (Thus the flag set.) 3706 * 3707 * XXX XXX 3708 * Note that this makes a blind copy of all fields in the ctl_io, except 3709 * for the pool reference. This includes any memory that has been 3710 * allocated! That memory will no longer be valid after done has been 3711 * called, so this would be VERY DANGEROUS for command that actually does 3712 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3713 * start and stop commands, which don't transfer any data, so this is not a 3714 * problem. If it is used for anything else, the caller would also need to 3715 * allocate data buffer space and this routine would need to be modified to 3716 * copy the data buffer(s) as well. 3717 */ 3718void 3719ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3720{ 3721 void *pool_ref; 3722 3723 if ((src == NULL) 3724 || (dest == NULL)) 3725 return; 3726 3727 /* 3728 * May need to preserve linked list pointers at some point too. 3729 */ 3730 pool_ref = dest->io_hdr.pool; 3731 3732 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3733 3734 dest->io_hdr.pool = pool_ref; 3735 /* 3736 * We need to know that this is an internal copy, and doesn't need 3737 * to get passed back to the FETD that allocated it. 3738 */ 3739 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3740} 3741 3742#ifdef NEEDTOPORT 3743static void 3744ctl_update_power_subpage(struct copan_power_subpage *page) 3745{ 3746 int num_luns, num_partitions, config_type; 3747 struct ctl_softc *softc; 3748 cs_BOOL_t aor_present, shelf_50pct_power; 3749 cs_raidset_personality_t rs_type; 3750 int max_active_luns; 3751 3752 softc = control_softc; 3753 3754 /* subtract out the processor LUN */ 3755 num_luns = softc->num_luns - 1; 3756 /* 3757 * Default to 7 LUNs active, which was the only number we allowed 3758 * in the past. 3759 */ 3760 max_active_luns = 7; 3761 3762 num_partitions = config_GetRsPartitionInfo(); 3763 config_type = config_GetConfigType(); 3764 shelf_50pct_power = config_GetShelfPowerMode(); 3765 aor_present = config_IsAorRsPresent(); 3766 3767 rs_type = ddb_GetRsRaidType(1); 3768 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3769 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3770 EPRINT(0, "Unsupported RS type %d!", rs_type); 3771 } 3772 3773 3774 page->total_luns = num_luns; 3775 3776 switch (config_type) { 3777 case 40: 3778 /* 3779 * In a 40 drive configuration, it doesn't matter what DC 3780 * cards we have, whether we have AOR enabled or not, 3781 * partitioning or not, or what type of RAIDset we have. 3782 * In that scenario, we can power up every LUN we present 3783 * to the user. 3784 */ 3785 max_active_luns = num_luns; 3786 3787 break; 3788 case 64: 3789 if (shelf_50pct_power == CS_FALSE) { 3790 /* 25% power */ 3791 if (aor_present == CS_TRUE) { 3792 if (rs_type == 3793 CS_RAIDSET_PERSONALITY_RAID5) { 3794 max_active_luns = 7; 3795 } else if (rs_type == 3796 CS_RAIDSET_PERSONALITY_RAID1){ 3797 max_active_luns = 14; 3798 } else { 3799 /* XXX KDM now what?? */ 3800 } 3801 } else { 3802 if (rs_type == 3803 CS_RAIDSET_PERSONALITY_RAID5) { 3804 max_active_luns = 8; 3805 } else if (rs_type == 3806 CS_RAIDSET_PERSONALITY_RAID1){ 3807 max_active_luns = 16; 3808 } else { 3809 /* XXX KDM now what?? */ 3810 } 3811 } 3812 } else { 3813 /* 50% power */ 3814 /* 3815 * With 50% power in a 64 drive configuration, we 3816 * can power all LUNs we present. 3817 */ 3818 max_active_luns = num_luns; 3819 } 3820 break; 3821 case 112: 3822 if (shelf_50pct_power == CS_FALSE) { 3823 /* 25% power */ 3824 if (aor_present == CS_TRUE) { 3825 if (rs_type == 3826 CS_RAIDSET_PERSONALITY_RAID5) { 3827 max_active_luns = 7; 3828 } else if (rs_type == 3829 CS_RAIDSET_PERSONALITY_RAID1){ 3830 max_active_luns = 14; 3831 } else { 3832 /* XXX KDM now what?? */ 3833 } 3834 } else { 3835 if (rs_type == 3836 CS_RAIDSET_PERSONALITY_RAID5) { 3837 max_active_luns = 8; 3838 } else if (rs_type == 3839 CS_RAIDSET_PERSONALITY_RAID1){ 3840 max_active_luns = 16; 3841 } else { 3842 /* XXX KDM now what?? */ 3843 } 3844 } 3845 } else { 3846 /* 50% power */ 3847 if (aor_present == CS_TRUE) { 3848 if (rs_type == 3849 CS_RAIDSET_PERSONALITY_RAID5) { 3850 max_active_luns = 14; 3851 } else if (rs_type == 3852 CS_RAIDSET_PERSONALITY_RAID1){ 3853 /* 3854 * We're assuming here that disk 3855 * caching is enabled, and so we're 3856 * able to power up half of each 3857 * LUN, and cache all writes. 3858 */ 3859 max_active_luns = num_luns; 3860 } else { 3861 /* XXX KDM now what?? */ 3862 } 3863 } else { 3864 if (rs_type == 3865 CS_RAIDSET_PERSONALITY_RAID5) { 3866 max_active_luns = 15; 3867 } else if (rs_type == 3868 CS_RAIDSET_PERSONALITY_RAID1){ 3869 max_active_luns = 30; 3870 } else { 3871 /* XXX KDM now what?? */ 3872 } 3873 } 3874 } 3875 break; 3876 default: 3877 /* 3878 * In this case, we have an unknown configuration, so we 3879 * just use the default from above. 3880 */ 3881 break; 3882 } 3883 3884 page->max_active_luns = max_active_luns; 3885#if 0 3886 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3887 page->total_luns, page->max_active_luns); 3888#endif 3889} 3890#endif /* NEEDTOPORT */ 3891 3892/* 3893 * This routine could be used in the future to load default and/or saved 3894 * mode page parameters for a particuar lun. 3895 */ 3896static int 3897ctl_init_page_index(struct ctl_lun *lun) 3898{ 3899 int i; 3900 struct ctl_page_index *page_index; 3901 struct ctl_softc *softc; 3902 3903 memcpy(&lun->mode_pages.index, page_index_template, 3904 sizeof(page_index_template)); 3905 3906 softc = lun->ctl_softc; 3907 3908 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3909 3910 page_index = &lun->mode_pages.index[i]; 3911 /* 3912 * If this is a disk-only mode page, there's no point in 3913 * setting it up. For some pages, we have to have some 3914 * basic information about the disk in order to calculate the 3915 * mode page data. 3916 */ 3917 if ((lun->be_lun->lun_type != T_DIRECT) 3918 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3919 continue; 3920 3921 switch (page_index->page_code & SMPH_PC_MASK) { 3922 case SMS_FORMAT_DEVICE_PAGE: { 3923 struct scsi_format_page *format_page; 3924 3925 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3926 panic("subpage is incorrect!"); 3927 3928 /* 3929 * Sectors per track are set above. Bytes per 3930 * sector need to be set here on a per-LUN basis. 3931 */ 3932 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3933 &format_page_default, 3934 sizeof(format_page_default)); 3935 memcpy(&lun->mode_pages.format_page[ 3936 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3937 sizeof(format_page_changeable)); 3938 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3939 &format_page_default, 3940 sizeof(format_page_default)); 3941 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3942 &format_page_default, 3943 sizeof(format_page_default)); 3944 3945 format_page = &lun->mode_pages.format_page[ 3946 CTL_PAGE_CURRENT]; 3947 scsi_ulto2b(lun->be_lun->blocksize, 3948 format_page->bytes_per_sector); 3949 3950 format_page = &lun->mode_pages.format_page[ 3951 CTL_PAGE_DEFAULT]; 3952 scsi_ulto2b(lun->be_lun->blocksize, 3953 format_page->bytes_per_sector); 3954 3955 format_page = &lun->mode_pages.format_page[ 3956 CTL_PAGE_SAVED]; 3957 scsi_ulto2b(lun->be_lun->blocksize, 3958 format_page->bytes_per_sector); 3959 3960 page_index->page_data = 3961 (uint8_t *)lun->mode_pages.format_page; 3962 break; 3963 } 3964 case SMS_RIGID_DISK_PAGE: { 3965 struct scsi_rigid_disk_page *rigid_disk_page; 3966 uint32_t sectors_per_cylinder; 3967 uint64_t cylinders; 3968#ifndef __XSCALE__ 3969 int shift; 3970#endif /* !__XSCALE__ */ 3971 3972 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3973 panic("invalid subpage value %d", 3974 page_index->subpage); 3975 3976 /* 3977 * Rotation rate and sectors per track are set 3978 * above. We calculate the cylinders here based on 3979 * capacity. Due to the number of heads and 3980 * sectors per track we're using, smaller arrays 3981 * may turn out to have 0 cylinders. Linux and 3982 * FreeBSD don't pay attention to these mode pages 3983 * to figure out capacity, but Solaris does. It 3984 * seems to deal with 0 cylinders just fine, and 3985 * works out a fake geometry based on the capacity. 3986 */ 3987 memcpy(&lun->mode_pages.rigid_disk_page[ 3988 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3989 sizeof(rigid_disk_page_default)); 3990 memcpy(&lun->mode_pages.rigid_disk_page[ 3991 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3992 sizeof(rigid_disk_page_changeable)); 3993 memcpy(&lun->mode_pages.rigid_disk_page[ 3994 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3995 sizeof(rigid_disk_page_default)); 3996 memcpy(&lun->mode_pages.rigid_disk_page[ 3997 CTL_PAGE_SAVED], &rigid_disk_page_default, 3998 sizeof(rigid_disk_page_default)); 3999 4000 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 4001 CTL_DEFAULT_HEADS; 4002 4003 /* 4004 * The divide method here will be more accurate, 4005 * probably, but results in floating point being 4006 * used in the kernel on i386 (__udivdi3()). On the 4007 * XScale, though, __udivdi3() is implemented in 4008 * software. 4009 * 4010 * The shift method for cylinder calculation is 4011 * accurate if sectors_per_cylinder is a power of 4012 * 2. Otherwise it might be slightly off -- you 4013 * might have a bit of a truncation problem. 4014 */ 4015#ifdef __XSCALE__ 4016 cylinders = (lun->be_lun->maxlba + 1) / 4017 sectors_per_cylinder; 4018#else 4019 for (shift = 31; shift > 0; shift--) { 4020 if (sectors_per_cylinder & (1 << shift)) 4021 break; 4022 } 4023 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4024#endif 4025 4026 /* 4027 * We've basically got 3 bytes, or 24 bits for the 4028 * cylinder size in the mode page. If we're over, 4029 * just round down to 2^24. 4030 */ 4031 if (cylinders > 0xffffff) 4032 cylinders = 0xffffff; 4033 4034 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4035 CTL_PAGE_CURRENT]; 4036 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4037 4038 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4039 CTL_PAGE_DEFAULT]; 4040 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4041 4042 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4043 CTL_PAGE_SAVED]; 4044 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4045 4046 page_index->page_data = 4047 (uint8_t *)lun->mode_pages.rigid_disk_page; 4048 break; 4049 } 4050 case SMS_CACHING_PAGE: { 4051 4052 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4053 panic("invalid subpage value %d", 4054 page_index->subpage); 4055 /* 4056 * Defaults should be okay here, no calculations 4057 * needed. 4058 */ 4059 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4060 &caching_page_default, 4061 sizeof(caching_page_default)); 4062 memcpy(&lun->mode_pages.caching_page[ 4063 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4064 sizeof(caching_page_changeable)); 4065 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4066 &caching_page_default, 4067 sizeof(caching_page_default)); 4068 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4069 &caching_page_default, 4070 sizeof(caching_page_default)); 4071 page_index->page_data = 4072 (uint8_t *)lun->mode_pages.caching_page; 4073 break; 4074 } 4075 case SMS_CONTROL_MODE_PAGE: { 4076 4077 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4078 panic("invalid subpage value %d", 4079 page_index->subpage); 4080 4081 /* 4082 * Defaults should be okay here, no calculations 4083 * needed. 4084 */ 4085 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4086 &control_page_default, 4087 sizeof(control_page_default)); 4088 memcpy(&lun->mode_pages.control_page[ 4089 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4090 sizeof(control_page_changeable)); 4091 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4092 &control_page_default, 4093 sizeof(control_page_default)); 4094 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4095 &control_page_default, 4096 sizeof(control_page_default)); 4097 page_index->page_data = 4098 (uint8_t *)lun->mode_pages.control_page; 4099 break; 4100 4101 } 4102 case SMS_VENDOR_SPECIFIC_PAGE:{ 4103 switch (page_index->subpage) { 4104 case PWR_SUBPAGE_CODE: { 4105 struct copan_power_subpage *current_page, 4106 *saved_page; 4107 4108 memcpy(&lun->mode_pages.power_subpage[ 4109 CTL_PAGE_CURRENT], 4110 &power_page_default, 4111 sizeof(power_page_default)); 4112 memcpy(&lun->mode_pages.power_subpage[ 4113 CTL_PAGE_CHANGEABLE], 4114 &power_page_changeable, 4115 sizeof(power_page_changeable)); 4116 memcpy(&lun->mode_pages.power_subpage[ 4117 CTL_PAGE_DEFAULT], 4118 &power_page_default, 4119 sizeof(power_page_default)); 4120 memcpy(&lun->mode_pages.power_subpage[ 4121 CTL_PAGE_SAVED], 4122 &power_page_default, 4123 sizeof(power_page_default)); 4124 page_index->page_data = 4125 (uint8_t *)lun->mode_pages.power_subpage; 4126 4127 current_page = (struct copan_power_subpage *) 4128 (page_index->page_data + 4129 (page_index->page_len * 4130 CTL_PAGE_CURRENT)); 4131 saved_page = (struct copan_power_subpage *) 4132 (page_index->page_data + 4133 (page_index->page_len * 4134 CTL_PAGE_SAVED)); 4135 break; 4136 } 4137 case APS_SUBPAGE_CODE: { 4138 struct copan_aps_subpage *current_page, 4139 *saved_page; 4140 4141 // This gets set multiple times but 4142 // it should always be the same. It's 4143 // only done during init so who cares. 4144 index_to_aps_page = i; 4145 4146 memcpy(&lun->mode_pages.aps_subpage[ 4147 CTL_PAGE_CURRENT], 4148 &aps_page_default, 4149 sizeof(aps_page_default)); 4150 memcpy(&lun->mode_pages.aps_subpage[ 4151 CTL_PAGE_CHANGEABLE], 4152 &aps_page_changeable, 4153 sizeof(aps_page_changeable)); 4154 memcpy(&lun->mode_pages.aps_subpage[ 4155 CTL_PAGE_DEFAULT], 4156 &aps_page_default, 4157 sizeof(aps_page_default)); 4158 memcpy(&lun->mode_pages.aps_subpage[ 4159 CTL_PAGE_SAVED], 4160 &aps_page_default, 4161 sizeof(aps_page_default)); 4162 page_index->page_data = 4163 (uint8_t *)lun->mode_pages.aps_subpage; 4164 4165 current_page = (struct copan_aps_subpage *) 4166 (page_index->page_data + 4167 (page_index->page_len * 4168 CTL_PAGE_CURRENT)); 4169 saved_page = (struct copan_aps_subpage *) 4170 (page_index->page_data + 4171 (page_index->page_len * 4172 CTL_PAGE_SAVED)); 4173 break; 4174 } 4175 case DBGCNF_SUBPAGE_CODE: { 4176 struct copan_debugconf_subpage *current_page, 4177 *saved_page; 4178 4179 memcpy(&lun->mode_pages.debugconf_subpage[ 4180 CTL_PAGE_CURRENT], 4181 &debugconf_page_default, 4182 sizeof(debugconf_page_default)); 4183 memcpy(&lun->mode_pages.debugconf_subpage[ 4184 CTL_PAGE_CHANGEABLE], 4185 &debugconf_page_changeable, 4186 sizeof(debugconf_page_changeable)); 4187 memcpy(&lun->mode_pages.debugconf_subpage[ 4188 CTL_PAGE_DEFAULT], 4189 &debugconf_page_default, 4190 sizeof(debugconf_page_default)); 4191 memcpy(&lun->mode_pages.debugconf_subpage[ 4192 CTL_PAGE_SAVED], 4193 &debugconf_page_default, 4194 sizeof(debugconf_page_default)); 4195 page_index->page_data = 4196 (uint8_t *)lun->mode_pages.debugconf_subpage; 4197 4198 current_page = (struct copan_debugconf_subpage *) 4199 (page_index->page_data + 4200 (page_index->page_len * 4201 CTL_PAGE_CURRENT)); 4202 saved_page = (struct copan_debugconf_subpage *) 4203 (page_index->page_data + 4204 (page_index->page_len * 4205 CTL_PAGE_SAVED)); 4206 break; 4207 } 4208 default: 4209 panic("invalid subpage value %d", 4210 page_index->subpage); 4211 break; 4212 } 4213 break; 4214 } 4215 default: 4216 panic("invalid page value %d", 4217 page_index->page_code & SMPH_PC_MASK); 4218 break; 4219 } 4220 } 4221 4222 return (CTL_RETVAL_COMPLETE); 4223} 4224 4225/* 4226 * LUN allocation. 4227 * 4228 * Requirements: 4229 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4230 * wants us to allocate the LUN and he can block. 4231 * - ctl_softc is always set 4232 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4233 * 4234 * Returns 0 for success, non-zero (errno) for failure. 4235 */ 4236static int 4237ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4238 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4239{ 4240 struct ctl_lun *nlun, *lun; 4241 struct ctl_frontend *fe; 4242 int lun_number, i, lun_malloced; 4243 4244 if (be_lun == NULL) 4245 return (EINVAL); 4246 4247 /* 4248 * We currently only support Direct Access or Processor LUN types. 4249 */ 4250 switch (be_lun->lun_type) { 4251 case T_DIRECT: 4252 break; 4253 case T_PROCESSOR: 4254 break; 4255 case T_SEQUENTIAL: 4256 case T_CHANGER: 4257 default: 4258 be_lun->lun_config_status(be_lun->be_lun, 4259 CTL_LUN_CONFIG_FAILURE); 4260 break; 4261 } 4262 if (ctl_lun == NULL) { 4263 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4264 lun_malloced = 1; 4265 } else { 4266 lun_malloced = 0; 4267 lun = ctl_lun; 4268 } 4269 4270 memset(lun, 0, sizeof(*lun)); 4271 if (lun_malloced) 4272 lun->flags = CTL_LUN_MALLOCED; 4273 4274 mtx_lock(&ctl_softc->ctl_lock); 4275 /* 4276 * See if the caller requested a particular LUN number. If so, see 4277 * if it is available. Otherwise, allocate the first available LUN. 4278 */ 4279 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4280 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4281 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4282 mtx_unlock(&ctl_softc->ctl_lock); 4283 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4284 printf("ctl: requested LUN ID %d is higher " 4285 "than CTL_MAX_LUNS - 1 (%d)\n", 4286 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4287 } else { 4288 /* 4289 * XXX KDM return an error, or just assign 4290 * another LUN ID in this case?? 4291 */ 4292 printf("ctl: requested LUN ID %d is already " 4293 "in use\n", be_lun->req_lun_id); 4294 } 4295 if (lun->flags & CTL_LUN_MALLOCED) 4296 free(lun, M_CTL); 4297 be_lun->lun_config_status(be_lun->be_lun, 4298 CTL_LUN_CONFIG_FAILURE); 4299 return (ENOSPC); 4300 } 4301 lun_number = be_lun->req_lun_id; 4302 } else { 4303 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4304 if (lun_number == -1) { 4305 mtx_unlock(&ctl_softc->ctl_lock); 4306 printf("ctl: can't allocate LUN on target %ju, out of " 4307 "LUNs\n", (uintmax_t)target_id.id); 4308 if (lun->flags & CTL_LUN_MALLOCED) 4309 free(lun, M_CTL); 4310 be_lun->lun_config_status(be_lun->be_lun, 4311 CTL_LUN_CONFIG_FAILURE); 4312 return (ENOSPC); 4313 } 4314 } 4315 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4316 4317 lun->target = target_id; 4318 lun->lun = lun_number; 4319 lun->be_lun = be_lun; 4320 /* 4321 * The processor LUN is always enabled. Disk LUNs come on line 4322 * disabled, and must be enabled by the backend. 4323 */ 4324 lun->flags |= CTL_LUN_DISABLED; 4325 lun->backend = be_lun->be; 4326 be_lun->ctl_lun = lun; 4327 be_lun->lun_id = lun_number; 4328 atomic_add_int(&be_lun->be->num_luns, 1); 4329 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4330 lun->flags |= CTL_LUN_STOPPED; 4331 4332 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4333 lun->flags |= CTL_LUN_INOPERABLE; 4334 4335 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4336 lun->flags |= CTL_LUN_PRIMARY_SC; 4337 4338 lun->ctl_softc = ctl_softc; 4339 TAILQ_INIT(&lun->ooa_queue); 4340 TAILQ_INIT(&lun->blocked_queue); 4341 STAILQ_INIT(&lun->error_list); 4342 4343 /* 4344 * Initialize the mode page index. 4345 */ 4346 ctl_init_page_index(lun); 4347 4348 /* 4349 * Set the poweron UA for all initiators on this LUN only. 4350 */ 4351 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4352 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4353 4354 /* 4355 * Now, before we insert this lun on the lun list, set the lun 4356 * inventory changed UA for all other luns. 4357 */ 4358 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4359 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4360 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4361 } 4362 } 4363 4364 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4365 4366 ctl_softc->ctl_luns[lun_number] = lun; 4367 4368 ctl_softc->num_luns++; 4369 4370 /* Setup statistics gathering */ 4371 lun->stats.device_type = be_lun->lun_type; 4372 lun->stats.lun_number = lun_number; 4373 if (lun->stats.device_type == T_DIRECT) 4374 lun->stats.blocksize = be_lun->blocksize; 4375 else 4376 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4377 for (i = 0;i < CTL_MAX_PORTS;i++) 4378 lun->stats.ports[i].targ_port = i; 4379 4380 mtx_unlock(&ctl_softc->ctl_lock); 4381 4382 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4383 4384 /* 4385 * Run through each registered FETD and bring it online if it isn't 4386 * already. Enable the target ID if it hasn't been enabled, and 4387 * enable this particular LUN. 4388 */ 4389 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4390 int retval; 4391 4392 /* 4393 * XXX KDM this only works for ONE TARGET ID. We'll need 4394 * to do things differently if we go to a multiple target 4395 * ID scheme. 4396 */ 4397 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4398 4399 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4400 if (retval != 0) { 4401 printf("ctl_alloc_lun: FETD %s port %d " 4402 "returned error %d for targ_enable on " 4403 "target %ju\n", fe->port_name, 4404 fe->targ_port, retval, 4405 (uintmax_t)target_id.id); 4406 } else 4407 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4408 } 4409 4410 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4411 if (retval != 0) { 4412 printf("ctl_alloc_lun: FETD %s port %d returned error " 4413 "%d for lun_enable on target %ju lun %d\n", 4414 fe->port_name, fe->targ_port, retval, 4415 (uintmax_t)target_id.id, lun_number); 4416 } else 4417 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4418 } 4419 return (0); 4420} 4421 4422/* 4423 * Delete a LUN. 4424 * Assumptions: 4425 * - LUN has already been marked invalid and any pending I/O has been taken 4426 * care of. 4427 */ 4428static int 4429ctl_free_lun(struct ctl_lun *lun) 4430{ 4431 struct ctl_softc *softc; 4432#if 0 4433 struct ctl_frontend *fe; 4434#endif 4435 struct ctl_lun *nlun; 4436 union ctl_io *io, *next_io; 4437 int i; 4438 4439 softc = lun->ctl_softc; 4440 4441 mtx_assert(&softc->ctl_lock, MA_OWNED); 4442 4443 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4444 4445 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4446 4447 softc->ctl_luns[lun->lun] = NULL; 4448 4449 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4450 printf("ctl_free_lun: aieee!! freeing a LUN with " 4451 "outstanding I/O!!\n"); 4452 } 4453 4454 /* 4455 * If we have anything pending on the RtR queue, remove it. 4456 */ 4457 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4458 io = next_io) { 4459 uint32_t targ_lun; 4460 4461 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4462 targ_lun = io->io_hdr.nexus.targ_lun; 4463 if (io->io_hdr.nexus.lun_map_fn != NULL) 4464 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 4465 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4466 && (targ_lun == lun->lun)) 4467 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4468 ctl_io_hdr, links); 4469 } 4470 4471 /* 4472 * Then remove everything from the blocked queue. 4473 */ 4474 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4475 io = next_io) { 4476 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4477 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4478 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4479 } 4480 4481 /* 4482 * Now clear out the OOA queue, and free all the I/O. 4483 * XXX KDM should we notify the FETD here? We probably need to 4484 * quiesce the LUN before deleting it. 4485 */ 4486 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4487 io = next_io) { 4488 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4489 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4490 ctl_free_io(io); 4491 } 4492 4493 softc->num_luns--; 4494 4495 /* 4496 * XXX KDM this scheme only works for a single target/multiple LUN 4497 * setup. It needs to be revamped for a multiple target scheme. 4498 * 4499 * XXX KDM this results in fe->lun_disable() getting called twice, 4500 * once when ctl_disable_lun() is called, and a second time here. 4501 * We really need to re-think the LUN disable semantics. There 4502 * should probably be several steps/levels to LUN removal: 4503 * - disable 4504 * - invalidate 4505 * - free 4506 * 4507 * Right now we only have a disable method when communicating to 4508 * the front end ports, at least for individual LUNs. 4509 */ 4510#if 0 4511 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4512 int retval; 4513 4514 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4515 lun->lun); 4516 if (retval != 0) { 4517 printf("ctl_free_lun: FETD %s port %d returned error " 4518 "%d for lun_disable on target %ju lun %jd\n", 4519 fe->port_name, fe->targ_port, retval, 4520 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4521 } 4522 4523 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4524 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4525 4526 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4527 if (retval != 0) { 4528 printf("ctl_free_lun: FETD %s port %d " 4529 "returned error %d for targ_disable on " 4530 "target %ju\n", fe->port_name, 4531 fe->targ_port, retval, 4532 (uintmax_t)lun->target.id); 4533 } else 4534 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4535 4536 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4537 continue; 4538 4539#if 0 4540 fe->port_offline(fe->onoff_arg); 4541 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4542#endif 4543 } 4544 } 4545#endif 4546 4547 /* 4548 * Tell the backend to free resources, if this LUN has a backend. 4549 */ 4550 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4551 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4552 4553 if (lun->flags & CTL_LUN_MALLOCED) 4554 free(lun, M_CTL); 4555 4556 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4557 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4558 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4559 } 4560 } 4561 4562 return (0); 4563} 4564 4565static void 4566ctl_create_lun(struct ctl_be_lun *be_lun) 4567{ 4568 struct ctl_softc *ctl_softc; 4569 4570 ctl_softc = control_softc; 4571 4572 /* 4573 * ctl_alloc_lun() should handle all potential failure cases. 4574 */ 4575 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4576} 4577 4578int 4579ctl_add_lun(struct ctl_be_lun *be_lun) 4580{ 4581 struct ctl_softc *ctl_softc; 4582 4583 ctl_softc = control_softc; 4584 4585 mtx_lock(&ctl_softc->ctl_lock); 4586 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4587 mtx_unlock(&ctl_softc->ctl_lock); 4588 4589 ctl_wakeup_thread(); 4590 4591 return (0); 4592} 4593 4594int 4595ctl_enable_lun(struct ctl_be_lun *be_lun) 4596{ 4597 struct ctl_softc *ctl_softc; 4598 struct ctl_frontend *fe, *nfe; 4599 struct ctl_lun *lun; 4600 int retval; 4601 4602 ctl_softc = control_softc; 4603 4604 lun = (struct ctl_lun *)be_lun->ctl_lun; 4605 4606 mtx_lock(&ctl_softc->ctl_lock); 4607 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4608 /* 4609 * eh? Why did we get called if the LUN is already 4610 * enabled? 4611 */ 4612 mtx_unlock(&ctl_softc->ctl_lock); 4613 return (0); 4614 } 4615 lun->flags &= ~CTL_LUN_DISABLED; 4616 4617 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4618 nfe = STAILQ_NEXT(fe, links); 4619 4620 /* 4621 * Drop the lock while we call the FETD's enable routine. 4622 * This can lead to a callback into CTL (at least in the 4623 * case of the internal initiator frontend. 4624 */ 4625 mtx_unlock(&ctl_softc->ctl_lock); 4626 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4627 mtx_lock(&ctl_softc->ctl_lock); 4628 if (retval != 0) { 4629 printf("%s: FETD %s port %d returned error " 4630 "%d for lun_enable on target %ju lun %jd\n", 4631 __func__, fe->port_name, fe->targ_port, retval, 4632 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4633 } 4634#if 0 4635 else { 4636 /* NOTE: TODO: why does lun enable affect port status? */ 4637 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4638 } 4639#endif 4640 } 4641 4642 mtx_unlock(&ctl_softc->ctl_lock); 4643 4644 return (0); 4645} 4646 4647int 4648ctl_disable_lun(struct ctl_be_lun *be_lun) 4649{ 4650 struct ctl_softc *ctl_softc; 4651 struct ctl_frontend *fe; 4652 struct ctl_lun *lun; 4653 int retval; 4654 4655 ctl_softc = control_softc; 4656 4657 lun = (struct ctl_lun *)be_lun->ctl_lun; 4658 4659 mtx_lock(&ctl_softc->ctl_lock); 4660 4661 if (lun->flags & CTL_LUN_DISABLED) { 4662 mtx_unlock(&ctl_softc->ctl_lock); 4663 return (0); 4664 } 4665 lun->flags |= CTL_LUN_DISABLED; 4666 4667 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4668 mtx_unlock(&ctl_softc->ctl_lock); 4669 /* 4670 * Drop the lock before we call the frontend's disable 4671 * routine, to avoid lock order reversals. 4672 * 4673 * XXX KDM what happens if the frontend list changes while 4674 * we're traversing it? It's unlikely, but should be handled. 4675 */ 4676 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4677 lun->lun); 4678 mtx_lock(&ctl_softc->ctl_lock); 4679 if (retval != 0) { 4680 printf("ctl_alloc_lun: FETD %s port %d returned error " 4681 "%d for lun_disable on target %ju lun %jd\n", 4682 fe->port_name, fe->targ_port, retval, 4683 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4684 } 4685 } 4686 4687 mtx_unlock(&ctl_softc->ctl_lock); 4688 4689 return (0); 4690} 4691 4692int 4693ctl_start_lun(struct ctl_be_lun *be_lun) 4694{ 4695 struct ctl_softc *ctl_softc; 4696 struct ctl_lun *lun; 4697 4698 ctl_softc = control_softc; 4699 4700 lun = (struct ctl_lun *)be_lun->ctl_lun; 4701 4702 mtx_lock(&ctl_softc->ctl_lock); 4703 lun->flags &= ~CTL_LUN_STOPPED; 4704 mtx_unlock(&ctl_softc->ctl_lock); 4705 4706 return (0); 4707} 4708 4709int 4710ctl_stop_lun(struct ctl_be_lun *be_lun) 4711{ 4712 struct ctl_softc *ctl_softc; 4713 struct ctl_lun *lun; 4714 4715 ctl_softc = control_softc; 4716 4717 lun = (struct ctl_lun *)be_lun->ctl_lun; 4718 4719 mtx_lock(&ctl_softc->ctl_lock); 4720 lun->flags |= CTL_LUN_STOPPED; 4721 mtx_unlock(&ctl_softc->ctl_lock); 4722 4723 return (0); 4724} 4725 4726int 4727ctl_lun_offline(struct ctl_be_lun *be_lun) 4728{ 4729 struct ctl_softc *ctl_softc; 4730 struct ctl_lun *lun; 4731 4732 ctl_softc = control_softc; 4733 4734 lun = (struct ctl_lun *)be_lun->ctl_lun; 4735 4736 mtx_lock(&ctl_softc->ctl_lock); 4737 lun->flags |= CTL_LUN_OFFLINE; 4738 mtx_unlock(&ctl_softc->ctl_lock); 4739 4740 return (0); 4741} 4742 4743int 4744ctl_lun_online(struct ctl_be_lun *be_lun) 4745{ 4746 struct ctl_softc *ctl_softc; 4747 struct ctl_lun *lun; 4748 4749 ctl_softc = control_softc; 4750 4751 lun = (struct ctl_lun *)be_lun->ctl_lun; 4752 4753 mtx_lock(&ctl_softc->ctl_lock); 4754 lun->flags &= ~CTL_LUN_OFFLINE; 4755 mtx_unlock(&ctl_softc->ctl_lock); 4756 4757 return (0); 4758} 4759 4760int 4761ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4762{ 4763 struct ctl_softc *ctl_softc; 4764 struct ctl_lun *lun; 4765 4766 ctl_softc = control_softc; 4767 4768 lun = (struct ctl_lun *)be_lun->ctl_lun; 4769 4770 mtx_lock(&ctl_softc->ctl_lock); 4771 4772 /* 4773 * The LUN needs to be disabled before it can be marked invalid. 4774 */ 4775 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4776 mtx_unlock(&ctl_softc->ctl_lock); 4777 return (-1); 4778 } 4779 /* 4780 * Mark the LUN invalid. 4781 */ 4782 lun->flags |= CTL_LUN_INVALID; 4783 4784 /* 4785 * If there is nothing in the OOA queue, go ahead and free the LUN. 4786 * If we have something in the OOA queue, we'll free it when the 4787 * last I/O completes. 4788 */ 4789 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4790 ctl_free_lun(lun); 4791 mtx_unlock(&ctl_softc->ctl_lock); 4792 4793 return (0); 4794} 4795 4796int 4797ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4798{ 4799 struct ctl_softc *ctl_softc; 4800 struct ctl_lun *lun; 4801 4802 ctl_softc = control_softc; 4803 lun = (struct ctl_lun *)be_lun->ctl_lun; 4804 4805 mtx_lock(&ctl_softc->ctl_lock); 4806 lun->flags |= CTL_LUN_INOPERABLE; 4807 mtx_unlock(&ctl_softc->ctl_lock); 4808 4809 return (0); 4810} 4811 4812int 4813ctl_lun_operable(struct ctl_be_lun *be_lun) 4814{ 4815 struct ctl_softc *ctl_softc; 4816 struct ctl_lun *lun; 4817 4818 ctl_softc = control_softc; 4819 lun = (struct ctl_lun *)be_lun->ctl_lun; 4820 4821 mtx_lock(&ctl_softc->ctl_lock); 4822 lun->flags &= ~CTL_LUN_INOPERABLE; 4823 mtx_unlock(&ctl_softc->ctl_lock); 4824 4825 return (0); 4826} 4827 4828int 4829ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4830 int lock) 4831{ 4832 struct ctl_softc *softc; 4833 struct ctl_lun *lun; 4834 struct copan_aps_subpage *current_sp; 4835 struct ctl_page_index *page_index; 4836 int i; 4837 4838 softc = control_softc; 4839 4840 mtx_lock(&softc->ctl_lock); 4841 4842 lun = (struct ctl_lun *)be_lun->ctl_lun; 4843 4844 page_index = NULL; 4845 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4846 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4847 APS_PAGE_CODE) 4848 continue; 4849 4850 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4851 continue; 4852 page_index = &lun->mode_pages.index[i]; 4853 } 4854 4855 if (page_index == NULL) { 4856 mtx_unlock(&softc->ctl_lock); 4857 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4858 (uintmax_t)lun->lun); 4859 return (1); 4860 } 4861#if 0 4862 if ((softc->aps_locked_lun != 0) 4863 && (softc->aps_locked_lun != lun->lun)) { 4864 printf("%s: attempt to lock LUN %llu when %llu is already " 4865 "locked\n"); 4866 mtx_unlock(&softc->ctl_lock); 4867 return (1); 4868 } 4869#endif 4870 4871 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4872 (page_index->page_len * CTL_PAGE_CURRENT)); 4873 4874 if (lock != 0) { 4875 current_sp->lock_active = APS_LOCK_ACTIVE; 4876 softc->aps_locked_lun = lun->lun; 4877 } else { 4878 current_sp->lock_active = 0; 4879 softc->aps_locked_lun = 0; 4880 } 4881 4882 4883 /* 4884 * If we're in HA mode, try to send the lock message to the other 4885 * side. 4886 */ 4887 if (ctl_is_single == 0) { 4888 int isc_retval; 4889 union ctl_ha_msg lock_msg; 4890 4891 lock_msg.hdr.nexus = *nexus; 4892 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4893 if (lock != 0) 4894 lock_msg.aps.lock_flag = 1; 4895 else 4896 lock_msg.aps.lock_flag = 0; 4897 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4898 sizeof(lock_msg), 0); 4899 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4900 printf("%s: APS (lock=%d) error returned from " 4901 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4902 mtx_unlock(&softc->ctl_lock); 4903 return (1); 4904 } 4905 } 4906 4907 mtx_unlock(&softc->ctl_lock); 4908 4909 return (0); 4910} 4911 4912void 4913ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4914{ 4915 struct ctl_lun *lun; 4916 struct ctl_softc *softc; 4917 int i; 4918 4919 softc = control_softc; 4920 4921 mtx_lock(&softc->ctl_lock); 4922 4923 lun = (struct ctl_lun *)be_lun->ctl_lun; 4924 4925 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4926 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4927 4928 mtx_unlock(&softc->ctl_lock); 4929} 4930 4931/* 4932 * Backend "memory move is complete" callback for requests that never 4933 * make it down to say RAIDCore's configuration code. 4934 */ 4935int 4936ctl_config_move_done(union ctl_io *io) 4937{ 4938 int retval; 4939 4940 retval = CTL_RETVAL_COMPLETE; 4941 4942 4943 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4944 /* 4945 * XXX KDM this shouldn't happen, but what if it does? 4946 */ 4947 if (io->io_hdr.io_type != CTL_IO_SCSI) 4948 panic("I/O type isn't CTL_IO_SCSI!"); 4949 4950 if ((io->io_hdr.port_status == 0) 4951 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4952 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4953 io->io_hdr.status = CTL_SUCCESS; 4954 else if ((io->io_hdr.port_status != 0) 4955 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4956 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4957 /* 4958 * For hardware error sense keys, the sense key 4959 * specific value is defined to be a retry count, 4960 * but we use it to pass back an internal FETD 4961 * error code. XXX KDM Hopefully the FETD is only 4962 * using 16 bits for an error code, since that's 4963 * all the space we have in the sks field. 4964 */ 4965 ctl_set_internal_failure(&io->scsiio, 4966 /*sks_valid*/ 1, 4967 /*retry_count*/ 4968 io->io_hdr.port_status); 4969 free(io->scsiio.kern_data_ptr, M_CTL); 4970 ctl_done(io); 4971 goto bailout; 4972 } 4973 4974 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4975 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4976 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4977 /* 4978 * XXX KDM just assuming a single pointer here, and not a 4979 * S/G list. If we start using S/G lists for config data, 4980 * we'll need to know how to clean them up here as well. 4981 */ 4982 free(io->scsiio.kern_data_ptr, M_CTL); 4983 /* Hopefully the user has already set the status... */ 4984 ctl_done(io); 4985 } else { 4986 /* 4987 * XXX KDM now we need to continue data movement. Some 4988 * options: 4989 * - call ctl_scsiio() again? We don't do this for data 4990 * writes, because for those at least we know ahead of 4991 * time where the write will go and how long it is. For 4992 * config writes, though, that information is largely 4993 * contained within the write itself, thus we need to 4994 * parse out the data again. 4995 * 4996 * - Call some other function once the data is in? 4997 */ 4998 4999 /* 5000 * XXX KDM call ctl_scsiio() again for now, and check flag 5001 * bits to see whether we're allocated or not. 5002 */ 5003 retval = ctl_scsiio(&io->scsiio); 5004 } 5005bailout: 5006 return (retval); 5007} 5008 5009/* 5010 * This gets called by a backend driver when it is done with a 5011 * configuration write. 5012 */ 5013void 5014ctl_config_write_done(union ctl_io *io) 5015{ 5016 /* 5017 * If the IO_CONT flag is set, we need to call the supplied 5018 * function to continue processing the I/O, instead of completing 5019 * the I/O just yet. 5020 * 5021 * If there is an error, though, we don't want to keep processing. 5022 * Instead, just send status back to the initiator. 5023 */ 5024 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5025 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5026 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5027 io->scsiio.io_cont(io); 5028 return; 5029 } 5030 /* 5031 * Since a configuration write can be done for commands that actually 5032 * have data allocated, like write buffer, and commands that have 5033 * no data, like start/stop unit, we need to check here. 5034 */ 5035 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5036 free(io->scsiio.kern_data_ptr, M_CTL); 5037 ctl_done(io); 5038} 5039 5040/* 5041 * SCSI release command. 5042 */ 5043int 5044ctl_scsi_release(struct ctl_scsiio *ctsio) 5045{ 5046 int length, longid, thirdparty_id, resv_id; 5047 struct ctl_softc *ctl_softc; 5048 struct ctl_lun *lun; 5049 5050 length = 0; 5051 resv_id = 0; 5052 5053 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5054 5055 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5056 ctl_softc = control_softc; 5057 5058 switch (ctsio->cdb[0]) { 5059 case RELEASE: { 5060 struct scsi_release *cdb; 5061 5062 cdb = (struct scsi_release *)ctsio->cdb; 5063 if ((cdb->byte2 & 0x1f) != 0) { 5064 ctl_set_invalid_field(ctsio, 5065 /*sks_valid*/ 1, 5066 /*command*/ 1, 5067 /*field*/ 1, 5068 /*bit_valid*/ 0, 5069 /*bit*/ 0); 5070 ctl_done((union ctl_io *)ctsio); 5071 return (CTL_RETVAL_COMPLETE); 5072 } 5073 break; 5074 } 5075 case RELEASE_10: { 5076 struct scsi_release_10 *cdb; 5077 5078 cdb = (struct scsi_release_10 *)ctsio->cdb; 5079 5080 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5081 ctl_set_invalid_field(ctsio, 5082 /*sks_valid*/ 1, 5083 /*command*/ 1, 5084 /*field*/ 1, 5085 /*bit_valid*/ 1, 5086 /*bit*/ 0); 5087 ctl_done((union ctl_io *)ctsio); 5088 return (CTL_RETVAL_COMPLETE); 5089 5090 } 5091 5092 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5093 ctl_set_invalid_field(ctsio, 5094 /*sks_valid*/ 1, 5095 /*command*/ 1, 5096 /*field*/ 1, 5097 /*bit_valid*/ 1, 5098 /*bit*/ 4); 5099 ctl_done((union ctl_io *)ctsio); 5100 return (CTL_RETVAL_COMPLETE); 5101 } 5102 5103 if (cdb->byte2 & SR10_LONGID) 5104 longid = 1; 5105 else 5106 thirdparty_id = cdb->thirdparty_id; 5107 5108 resv_id = cdb->resv_id; 5109 length = scsi_2btoul(cdb->length); 5110 break; 5111 } 5112 } 5113 5114 5115 /* 5116 * XXX KDM right now, we only support LUN reservation. We don't 5117 * support 3rd party reservations, or extent reservations, which 5118 * might actually need the parameter list. If we've gotten this 5119 * far, we've got a LUN reservation. Anything else got kicked out 5120 * above. So, according to SPC, ignore the length. 5121 */ 5122 length = 0; 5123 5124 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5125 && (length > 0)) { 5126 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5127 ctsio->kern_data_len = length; 5128 ctsio->kern_total_len = length; 5129 ctsio->kern_data_resid = 0; 5130 ctsio->kern_rel_offset = 0; 5131 ctsio->kern_sg_entries = 0; 5132 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5133 ctsio->be_move_done = ctl_config_move_done; 5134 ctl_datamove((union ctl_io *)ctsio); 5135 5136 return (CTL_RETVAL_COMPLETE); 5137 } 5138 5139 if (length > 0) 5140 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5141 5142 mtx_lock(&ctl_softc->ctl_lock); 5143 5144 /* 5145 * According to SPC, it is not an error for an intiator to attempt 5146 * to release a reservation on a LUN that isn't reserved, or that 5147 * is reserved by another initiator. The reservation can only be 5148 * released, though, by the initiator who made it or by one of 5149 * several reset type events. 5150 */ 5151 if (lun->flags & CTL_LUN_RESERVED) { 5152 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5153 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5154 && (ctsio->io_hdr.nexus.targ_target.id == 5155 lun->rsv_nexus.targ_target.id)) { 5156 lun->flags &= ~CTL_LUN_RESERVED; 5157 } 5158 } 5159 5160 ctsio->scsi_status = SCSI_STATUS_OK; 5161 ctsio->io_hdr.status = CTL_SUCCESS; 5162 5163 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5164 free(ctsio->kern_data_ptr, M_CTL); 5165 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5166 } 5167 5168 mtx_unlock(&ctl_softc->ctl_lock); 5169 5170 ctl_done((union ctl_io *)ctsio); 5171 return (CTL_RETVAL_COMPLETE); 5172} 5173 5174int 5175ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5176{ 5177 int extent, thirdparty, longid; 5178 int resv_id, length; 5179 uint64_t thirdparty_id; 5180 struct ctl_softc *ctl_softc; 5181 struct ctl_lun *lun; 5182 5183 extent = 0; 5184 thirdparty = 0; 5185 longid = 0; 5186 resv_id = 0; 5187 length = 0; 5188 thirdparty_id = 0; 5189 5190 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5191 5192 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5193 ctl_softc = control_softc; 5194 5195 switch (ctsio->cdb[0]) { 5196 case RESERVE: { 5197 struct scsi_reserve *cdb; 5198 5199 cdb = (struct scsi_reserve *)ctsio->cdb; 5200 if ((cdb->byte2 & 0x1f) != 0) { 5201 ctl_set_invalid_field(ctsio, 5202 /*sks_valid*/ 1, 5203 /*command*/ 1, 5204 /*field*/ 1, 5205 /*bit_valid*/ 0, 5206 /*bit*/ 0); 5207 ctl_done((union ctl_io *)ctsio); 5208 return (CTL_RETVAL_COMPLETE); 5209 } 5210 resv_id = cdb->resv_id; 5211 length = scsi_2btoul(cdb->length); 5212 break; 5213 } 5214 case RESERVE_10: { 5215 struct scsi_reserve_10 *cdb; 5216 5217 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5218 5219 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5220 ctl_set_invalid_field(ctsio, 5221 /*sks_valid*/ 1, 5222 /*command*/ 1, 5223 /*field*/ 1, 5224 /*bit_valid*/ 1, 5225 /*bit*/ 0); 5226 ctl_done((union ctl_io *)ctsio); 5227 return (CTL_RETVAL_COMPLETE); 5228 } 5229 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5230 ctl_set_invalid_field(ctsio, 5231 /*sks_valid*/ 1, 5232 /*command*/ 1, 5233 /*field*/ 1, 5234 /*bit_valid*/ 1, 5235 /*bit*/ 4); 5236 ctl_done((union ctl_io *)ctsio); 5237 return (CTL_RETVAL_COMPLETE); 5238 } 5239 if (cdb->byte2 & SR10_LONGID) 5240 longid = 1; 5241 else 5242 thirdparty_id = cdb->thirdparty_id; 5243 5244 resv_id = cdb->resv_id; 5245 length = scsi_2btoul(cdb->length); 5246 break; 5247 } 5248 } 5249 5250 /* 5251 * XXX KDM right now, we only support LUN reservation. We don't 5252 * support 3rd party reservations, or extent reservations, which 5253 * might actually need the parameter list. If we've gotten this 5254 * far, we've got a LUN reservation. Anything else got kicked out 5255 * above. So, according to SPC, ignore the length. 5256 */ 5257 length = 0; 5258 5259 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5260 && (length > 0)) { 5261 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5262 ctsio->kern_data_len = length; 5263 ctsio->kern_total_len = length; 5264 ctsio->kern_data_resid = 0; 5265 ctsio->kern_rel_offset = 0; 5266 ctsio->kern_sg_entries = 0; 5267 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5268 ctsio->be_move_done = ctl_config_move_done; 5269 ctl_datamove((union ctl_io *)ctsio); 5270 5271 return (CTL_RETVAL_COMPLETE); 5272 } 5273 5274 if (length > 0) 5275 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5276 5277 mtx_lock(&ctl_softc->ctl_lock); 5278 if (lun->flags & CTL_LUN_RESERVED) { 5279 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5280 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5281 || (ctsio->io_hdr.nexus.targ_target.id != 5282 lun->rsv_nexus.targ_target.id)) { 5283 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5284 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5285 goto bailout; 5286 } 5287 } 5288 5289 lun->flags |= CTL_LUN_RESERVED; 5290 lun->rsv_nexus = ctsio->io_hdr.nexus; 5291 5292 ctsio->scsi_status = SCSI_STATUS_OK; 5293 ctsio->io_hdr.status = CTL_SUCCESS; 5294 5295bailout: 5296 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5297 free(ctsio->kern_data_ptr, M_CTL); 5298 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5299 } 5300 5301 mtx_unlock(&ctl_softc->ctl_lock); 5302 5303 ctl_done((union ctl_io *)ctsio); 5304 return (CTL_RETVAL_COMPLETE); 5305} 5306 5307int 5308ctl_start_stop(struct ctl_scsiio *ctsio) 5309{ 5310 struct scsi_start_stop_unit *cdb; 5311 struct ctl_lun *lun; 5312 struct ctl_softc *ctl_softc; 5313 int retval; 5314 5315 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5316 5317 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5318 ctl_softc = control_softc; 5319 retval = 0; 5320 5321 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5322 5323 /* 5324 * XXX KDM 5325 * We don't support the immediate bit on a stop unit. In order to 5326 * do that, we would need to code up a way to know that a stop is 5327 * pending, and hold off any new commands until it completes, one 5328 * way or another. Then we could accept or reject those commands 5329 * depending on its status. We would almost need to do the reverse 5330 * of what we do below for an immediate start -- return the copy of 5331 * the ctl_io to the FETD with status to send to the host (and to 5332 * free the copy!) and then free the original I/O once the stop 5333 * actually completes. That way, the OOA queue mechanism can work 5334 * to block commands that shouldn't proceed. Another alternative 5335 * would be to put the copy in the queue in place of the original, 5336 * and return the original back to the caller. That could be 5337 * slightly safer.. 5338 */ 5339 if ((cdb->byte2 & SSS_IMMED) 5340 && ((cdb->how & SSS_START) == 0)) { 5341 ctl_set_invalid_field(ctsio, 5342 /*sks_valid*/ 1, 5343 /*command*/ 1, 5344 /*field*/ 1, 5345 /*bit_valid*/ 1, 5346 /*bit*/ 0); 5347 ctl_done((union ctl_io *)ctsio); 5348 return (CTL_RETVAL_COMPLETE); 5349 } 5350 5351 /* 5352 * We don't support the power conditions field. We need to check 5353 * this prior to checking the load/eject and start/stop bits. 5354 */ 5355 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5356 ctl_set_invalid_field(ctsio, 5357 /*sks_valid*/ 1, 5358 /*command*/ 1, 5359 /*field*/ 4, 5360 /*bit_valid*/ 1, 5361 /*bit*/ 4); 5362 ctl_done((union ctl_io *)ctsio); 5363 return (CTL_RETVAL_COMPLETE); 5364 } 5365 5366 /* 5367 * Media isn't removable, so we can't load or eject it. 5368 */ 5369 if ((cdb->how & SSS_LOEJ) != 0) { 5370 ctl_set_invalid_field(ctsio, 5371 /*sks_valid*/ 1, 5372 /*command*/ 1, 5373 /*field*/ 4, 5374 /*bit_valid*/ 1, 5375 /*bit*/ 1); 5376 ctl_done((union ctl_io *)ctsio); 5377 return (CTL_RETVAL_COMPLETE); 5378 } 5379 5380 if ((lun->flags & CTL_LUN_PR_RESERVED) 5381 && ((cdb->how & SSS_START)==0)) { 5382 uint32_t residx; 5383 5384 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5385 if (!lun->per_res[residx].registered 5386 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5387 5388 ctl_set_reservation_conflict(ctsio); 5389 ctl_done((union ctl_io *)ctsio); 5390 return (CTL_RETVAL_COMPLETE); 5391 } 5392 } 5393 5394 /* 5395 * If there is no backend on this device, we can't start or stop 5396 * it. In theory we shouldn't get any start/stop commands in the 5397 * first place at this level if the LUN doesn't have a backend. 5398 * That should get stopped by the command decode code. 5399 */ 5400 if (lun->backend == NULL) { 5401 ctl_set_invalid_opcode(ctsio); 5402 ctl_done((union ctl_io *)ctsio); 5403 return (CTL_RETVAL_COMPLETE); 5404 } 5405 5406 /* 5407 * XXX KDM Copan-specific offline behavior. 5408 * Figure out a reasonable way to port this? 5409 */ 5410#ifdef NEEDTOPORT 5411 mtx_lock(&ctl_softc->ctl_lock); 5412 5413 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5414 && (lun->flags & CTL_LUN_OFFLINE)) { 5415 /* 5416 * If the LUN is offline, and the on/offline bit isn't set, 5417 * reject the start or stop. Otherwise, let it through. 5418 */ 5419 mtx_unlock(&ctl_softc->ctl_lock); 5420 ctl_set_lun_not_ready(ctsio); 5421 ctl_done((union ctl_io *)ctsio); 5422 } else { 5423 mtx_unlock(&ctl_softc->ctl_lock); 5424#endif /* NEEDTOPORT */ 5425 /* 5426 * This could be a start or a stop when we're online, 5427 * or a stop/offline or start/online. A start or stop when 5428 * we're offline is covered in the case above. 5429 */ 5430 /* 5431 * In the non-immediate case, we send the request to 5432 * the backend and return status to the user when 5433 * it is done. 5434 * 5435 * In the immediate case, we allocate a new ctl_io 5436 * to hold a copy of the request, and send that to 5437 * the backend. We then set good status on the 5438 * user's request and return it immediately. 5439 */ 5440 if (cdb->byte2 & SSS_IMMED) { 5441 union ctl_io *new_io; 5442 5443 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5444 if (new_io == NULL) { 5445 ctl_set_busy(ctsio); 5446 ctl_done((union ctl_io *)ctsio); 5447 } else { 5448 ctl_copy_io((union ctl_io *)ctsio, 5449 new_io); 5450 retval = lun->backend->config_write(new_io); 5451 ctl_set_success(ctsio); 5452 ctl_done((union ctl_io *)ctsio); 5453 } 5454 } else { 5455 retval = lun->backend->config_write( 5456 (union ctl_io *)ctsio); 5457 } 5458#ifdef NEEDTOPORT 5459 } 5460#endif 5461 return (retval); 5462} 5463 5464/* 5465 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5466 * we don't really do anything with the LBA and length fields if the user 5467 * passes them in. Instead we'll just flush out the cache for the entire 5468 * LUN. 5469 */ 5470int 5471ctl_sync_cache(struct ctl_scsiio *ctsio) 5472{ 5473 struct ctl_lun *lun; 5474 struct ctl_softc *ctl_softc; 5475 uint64_t starting_lba; 5476 uint32_t block_count; 5477 int reladr, immed; 5478 int retval; 5479 5480 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5481 5482 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5483 ctl_softc = control_softc; 5484 retval = 0; 5485 reladr = 0; 5486 immed = 0; 5487 5488 switch (ctsio->cdb[0]) { 5489 case SYNCHRONIZE_CACHE: { 5490 struct scsi_sync_cache *cdb; 5491 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5492 5493 if (cdb->byte2 & SSC_RELADR) 5494 reladr = 1; 5495 5496 if (cdb->byte2 & SSC_IMMED) 5497 immed = 1; 5498 5499 starting_lba = scsi_4btoul(cdb->begin_lba); 5500 block_count = scsi_2btoul(cdb->lb_count); 5501 break; 5502 } 5503 case SYNCHRONIZE_CACHE_16: { 5504 struct scsi_sync_cache_16 *cdb; 5505 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5506 5507 if (cdb->byte2 & SSC_RELADR) 5508 reladr = 1; 5509 5510 if (cdb->byte2 & SSC_IMMED) 5511 immed = 1; 5512 5513 starting_lba = scsi_8btou64(cdb->begin_lba); 5514 block_count = scsi_4btoul(cdb->lb_count); 5515 break; 5516 } 5517 default: 5518 ctl_set_invalid_opcode(ctsio); 5519 ctl_done((union ctl_io *)ctsio); 5520 goto bailout; 5521 break; /* NOTREACHED */ 5522 } 5523 5524 if (immed) { 5525 /* 5526 * We don't support the immediate bit. Since it's in the 5527 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5528 * commands, we can just return the same error in either 5529 * case. 5530 */ 5531 ctl_set_invalid_field(ctsio, 5532 /*sks_valid*/ 1, 5533 /*command*/ 1, 5534 /*field*/ 1, 5535 /*bit_valid*/ 1, 5536 /*bit*/ 1); 5537 ctl_done((union ctl_io *)ctsio); 5538 goto bailout; 5539 } 5540 5541 if (reladr) { 5542 /* 5543 * We don't support the reladr bit either. It can only be 5544 * used with linked commands, and we don't support linked 5545 * commands. Since the bit is in the same place for the 5546 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5547 * just return the same error in either case. 5548 */ 5549 ctl_set_invalid_field(ctsio, 5550 /*sks_valid*/ 1, 5551 /*command*/ 1, 5552 /*field*/ 1, 5553 /*bit_valid*/ 1, 5554 /*bit*/ 0); 5555 ctl_done((union ctl_io *)ctsio); 5556 goto bailout; 5557 } 5558 5559 /* 5560 * We check the LBA and length, but don't do anything with them. 5561 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5562 * get flushed. This check will just help satisfy anyone who wants 5563 * to see an error for an out of range LBA. 5564 */ 5565 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5566 ctl_set_lba_out_of_range(ctsio); 5567 ctl_done((union ctl_io *)ctsio); 5568 goto bailout; 5569 } 5570 5571 /* 5572 * If this LUN has no backend, we can't flush the cache anyway. 5573 */ 5574 if (lun->backend == NULL) { 5575 ctl_set_invalid_opcode(ctsio); 5576 ctl_done((union ctl_io *)ctsio); 5577 goto bailout; 5578 } 5579 5580 /* 5581 * Check to see whether we're configured to send the SYNCHRONIZE 5582 * CACHE command directly to the back end. 5583 */ 5584 mtx_lock(&ctl_softc->ctl_lock); 5585 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5586 && (++(lun->sync_count) >= lun->sync_interval)) { 5587 lun->sync_count = 0; 5588 mtx_unlock(&ctl_softc->ctl_lock); 5589 retval = lun->backend->config_write((union ctl_io *)ctsio); 5590 } else { 5591 mtx_unlock(&ctl_softc->ctl_lock); 5592 ctl_set_success(ctsio); 5593 ctl_done((union ctl_io *)ctsio); 5594 } 5595 5596bailout: 5597 5598 return (retval); 5599} 5600 5601int 5602ctl_format(struct ctl_scsiio *ctsio) 5603{ 5604 struct scsi_format *cdb; 5605 struct ctl_lun *lun; 5606 struct ctl_softc *ctl_softc; 5607 int length, defect_list_len; 5608 5609 CTL_DEBUG_PRINT(("ctl_format\n")); 5610 5611 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5612 ctl_softc = control_softc; 5613 5614 cdb = (struct scsi_format *)ctsio->cdb; 5615 5616 length = 0; 5617 if (cdb->byte2 & SF_FMTDATA) { 5618 if (cdb->byte2 & SF_LONGLIST) 5619 length = sizeof(struct scsi_format_header_long); 5620 else 5621 length = sizeof(struct scsi_format_header_short); 5622 } 5623 5624 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5625 && (length > 0)) { 5626 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5627 ctsio->kern_data_len = length; 5628 ctsio->kern_total_len = length; 5629 ctsio->kern_data_resid = 0; 5630 ctsio->kern_rel_offset = 0; 5631 ctsio->kern_sg_entries = 0; 5632 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5633 ctsio->be_move_done = ctl_config_move_done; 5634 ctl_datamove((union ctl_io *)ctsio); 5635 5636 return (CTL_RETVAL_COMPLETE); 5637 } 5638 5639 defect_list_len = 0; 5640 5641 if (cdb->byte2 & SF_FMTDATA) { 5642 if (cdb->byte2 & SF_LONGLIST) { 5643 struct scsi_format_header_long *header; 5644 5645 header = (struct scsi_format_header_long *) 5646 ctsio->kern_data_ptr; 5647 5648 defect_list_len = scsi_4btoul(header->defect_list_len); 5649 if (defect_list_len != 0) { 5650 ctl_set_invalid_field(ctsio, 5651 /*sks_valid*/ 1, 5652 /*command*/ 0, 5653 /*field*/ 2, 5654 /*bit_valid*/ 0, 5655 /*bit*/ 0); 5656 goto bailout; 5657 } 5658 } else { 5659 struct scsi_format_header_short *header; 5660 5661 header = (struct scsi_format_header_short *) 5662 ctsio->kern_data_ptr; 5663 5664 defect_list_len = scsi_2btoul(header->defect_list_len); 5665 if (defect_list_len != 0) { 5666 ctl_set_invalid_field(ctsio, 5667 /*sks_valid*/ 1, 5668 /*command*/ 0, 5669 /*field*/ 2, 5670 /*bit_valid*/ 0, 5671 /*bit*/ 0); 5672 goto bailout; 5673 } 5674 } 5675 } 5676 5677 /* 5678 * The format command will clear out the "Medium format corrupted" 5679 * status if set by the configuration code. That status is really 5680 * just a way to notify the host that we have lost the media, and 5681 * get them to issue a command that will basically make them think 5682 * they're blowing away the media. 5683 */ 5684 mtx_lock(&ctl_softc->ctl_lock); 5685 lun->flags &= ~CTL_LUN_INOPERABLE; 5686 mtx_unlock(&ctl_softc->ctl_lock); 5687 5688 ctsio->scsi_status = SCSI_STATUS_OK; 5689 ctsio->io_hdr.status = CTL_SUCCESS; 5690bailout: 5691 5692 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5693 free(ctsio->kern_data_ptr, M_CTL); 5694 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5695 } 5696 5697 ctl_done((union ctl_io *)ctsio); 5698 return (CTL_RETVAL_COMPLETE); 5699} 5700 5701int 5702ctl_write_buffer(struct ctl_scsiio *ctsio) 5703{ 5704 struct scsi_write_buffer *cdb; 5705 struct copan_page_header *header; 5706 struct ctl_lun *lun; 5707 struct ctl_softc *ctl_softc; 5708 int buffer_offset, len; 5709 int retval; 5710 5711 header = NULL; 5712 5713 retval = CTL_RETVAL_COMPLETE; 5714 5715 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5716 5717 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5718 ctl_softc = control_softc; 5719 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5720 5721 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5722 ctl_set_invalid_field(ctsio, 5723 /*sks_valid*/ 1, 5724 /*command*/ 1, 5725 /*field*/ 1, 5726 /*bit_valid*/ 1, 5727 /*bit*/ 4); 5728 ctl_done((union ctl_io *)ctsio); 5729 return (CTL_RETVAL_COMPLETE); 5730 } 5731 if (cdb->buffer_id != 0) { 5732 ctl_set_invalid_field(ctsio, 5733 /*sks_valid*/ 1, 5734 /*command*/ 1, 5735 /*field*/ 2, 5736 /*bit_valid*/ 0, 5737 /*bit*/ 0); 5738 ctl_done((union ctl_io *)ctsio); 5739 return (CTL_RETVAL_COMPLETE); 5740 } 5741 5742 len = scsi_3btoul(cdb->length); 5743 buffer_offset = scsi_3btoul(cdb->offset); 5744 5745 if (len > sizeof(lun->write_buffer)) { 5746 ctl_set_invalid_field(ctsio, 5747 /*sks_valid*/ 1, 5748 /*command*/ 1, 5749 /*field*/ 6, 5750 /*bit_valid*/ 0, 5751 /*bit*/ 0); 5752 ctl_done((union ctl_io *)ctsio); 5753 return (CTL_RETVAL_COMPLETE); 5754 } 5755 5756 if (buffer_offset != 0) { 5757 ctl_set_invalid_field(ctsio, 5758 /*sks_valid*/ 1, 5759 /*command*/ 1, 5760 /*field*/ 3, 5761 /*bit_valid*/ 0, 5762 /*bit*/ 0); 5763 ctl_done((union ctl_io *)ctsio); 5764 return (CTL_RETVAL_COMPLETE); 5765 } 5766 5767 /* 5768 * If we've got a kernel request that hasn't been malloced yet, 5769 * malloc it and tell the caller the data buffer is here. 5770 */ 5771 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5772 ctsio->kern_data_ptr = lun->write_buffer; 5773 ctsio->kern_data_len = len; 5774 ctsio->kern_total_len = len; 5775 ctsio->kern_data_resid = 0; 5776 ctsio->kern_rel_offset = 0; 5777 ctsio->kern_sg_entries = 0; 5778 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5779 ctsio->be_move_done = ctl_config_move_done; 5780 ctl_datamove((union ctl_io *)ctsio); 5781 5782 return (CTL_RETVAL_COMPLETE); 5783 } 5784 5785 ctl_done((union ctl_io *)ctsio); 5786 5787 return (CTL_RETVAL_COMPLETE); 5788} 5789 5790/* 5791 * Note that this function currently doesn't actually do anything inside 5792 * CTL to enforce things if the DQue bit is turned on. 5793 * 5794 * Also note that this function can't be used in the default case, because 5795 * the DQue bit isn't set in the changeable mask for the control mode page 5796 * anyway. This is just here as an example for how to implement a page 5797 * handler, and a placeholder in case we want to allow the user to turn 5798 * tagged queueing on and off. 5799 * 5800 * The D_SENSE bit handling is functional, however, and will turn 5801 * descriptor sense on and off for a given LUN. 5802 */ 5803int 5804ctl_control_page_handler(struct ctl_scsiio *ctsio, 5805 struct ctl_page_index *page_index, uint8_t *page_ptr) 5806{ 5807 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5808 struct ctl_lun *lun; 5809 struct ctl_softc *softc; 5810 int set_ua; 5811 uint32_t initidx; 5812 5813 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5814 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5815 set_ua = 0; 5816 5817 user_cp = (struct scsi_control_page *)page_ptr; 5818 current_cp = (struct scsi_control_page *) 5819 (page_index->page_data + (page_index->page_len * 5820 CTL_PAGE_CURRENT)); 5821 saved_cp = (struct scsi_control_page *) 5822 (page_index->page_data + (page_index->page_len * 5823 CTL_PAGE_SAVED)); 5824 5825 softc = control_softc; 5826 5827 mtx_lock(&softc->ctl_lock); 5828 if (((current_cp->rlec & SCP_DSENSE) == 0) 5829 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5830 /* 5831 * Descriptor sense is currently turned off and the user 5832 * wants to turn it on. 5833 */ 5834 current_cp->rlec |= SCP_DSENSE; 5835 saved_cp->rlec |= SCP_DSENSE; 5836 lun->flags |= CTL_LUN_SENSE_DESC; 5837 set_ua = 1; 5838 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5839 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5840 /* 5841 * Descriptor sense is currently turned on, and the user 5842 * wants to turn it off. 5843 */ 5844 current_cp->rlec &= ~SCP_DSENSE; 5845 saved_cp->rlec &= ~SCP_DSENSE; 5846 lun->flags &= ~CTL_LUN_SENSE_DESC; 5847 set_ua = 1; 5848 } 5849 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5850 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5851#ifdef NEEDTOPORT 5852 csevent_log(CSC_CTL | CSC_SHELF_SW | 5853 CTL_UNTAG_TO_UNTAG, 5854 csevent_LogType_Trace, 5855 csevent_Severity_Information, 5856 csevent_AlertLevel_Green, 5857 csevent_FRU_Firmware, 5858 csevent_FRU_Unknown, 5859 "Received untagged to untagged transition"); 5860#endif /* NEEDTOPORT */ 5861 } else { 5862#ifdef NEEDTOPORT 5863 csevent_log(CSC_CTL | CSC_SHELF_SW | 5864 CTL_UNTAG_TO_TAG, 5865 csevent_LogType_ConfigChange, 5866 csevent_Severity_Information, 5867 csevent_AlertLevel_Green, 5868 csevent_FRU_Firmware, 5869 csevent_FRU_Unknown, 5870 "Received untagged to tagged " 5871 "queueing transition"); 5872#endif /* NEEDTOPORT */ 5873 5874 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5875 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5876 set_ua = 1; 5877 } 5878 } else { 5879 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5880#ifdef NEEDTOPORT 5881 csevent_log(CSC_CTL | CSC_SHELF_SW | 5882 CTL_TAG_TO_UNTAG, 5883 csevent_LogType_ConfigChange, 5884 csevent_Severity_Warning, 5885 csevent_AlertLevel_Yellow, 5886 csevent_FRU_Firmware, 5887 csevent_FRU_Unknown, 5888 "Received tagged queueing to untagged " 5889 "transition"); 5890#endif /* NEEDTOPORT */ 5891 5892 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5893 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5894 set_ua = 1; 5895 } else { 5896#ifdef NEEDTOPORT 5897 csevent_log(CSC_CTL | CSC_SHELF_SW | 5898 CTL_TAG_TO_TAG, 5899 csevent_LogType_Trace, 5900 csevent_Severity_Information, 5901 csevent_AlertLevel_Green, 5902 csevent_FRU_Firmware, 5903 csevent_FRU_Unknown, 5904 "Received tagged queueing to tagged " 5905 "queueing transition"); 5906#endif /* NEEDTOPORT */ 5907 } 5908 } 5909 if (set_ua != 0) { 5910 int i; 5911 /* 5912 * Let other initiators know that the mode 5913 * parameters for this LUN have changed. 5914 */ 5915 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 5916 if (i == initidx) 5917 continue; 5918 5919 lun->pending_sense[i].ua_pending |= 5920 CTL_UA_MODE_CHANGE; 5921 } 5922 } 5923 mtx_unlock(&softc->ctl_lock); 5924 5925 return (0); 5926} 5927 5928int 5929ctl_power_sp_handler(struct ctl_scsiio *ctsio, 5930 struct ctl_page_index *page_index, uint8_t *page_ptr) 5931{ 5932 return (0); 5933} 5934 5935int 5936ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 5937 struct ctl_page_index *page_index, int pc) 5938{ 5939 struct copan_power_subpage *page; 5940 5941 page = (struct copan_power_subpage *)page_index->page_data + 5942 (page_index->page_len * pc); 5943 5944 switch (pc) { 5945 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5946 /* 5947 * We don't update the changable bits for this page. 5948 */ 5949 break; 5950 case SMS_PAGE_CTRL_CURRENT >> 6: 5951 case SMS_PAGE_CTRL_DEFAULT >> 6: 5952 case SMS_PAGE_CTRL_SAVED >> 6: 5953#ifdef NEEDTOPORT 5954 ctl_update_power_subpage(page); 5955#endif 5956 break; 5957 default: 5958#ifdef NEEDTOPORT 5959 EPRINT(0, "Invalid PC %d!!", pc); 5960#endif 5961 break; 5962 } 5963 return (0); 5964} 5965 5966 5967int 5968ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 5969 struct ctl_page_index *page_index, uint8_t *page_ptr) 5970{ 5971 struct copan_aps_subpage *user_sp; 5972 struct copan_aps_subpage *current_sp; 5973 union ctl_modepage_info *modepage_info; 5974 struct ctl_softc *softc; 5975 struct ctl_lun *lun; 5976 int retval; 5977 5978 retval = CTL_RETVAL_COMPLETE; 5979 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 5980 (page_index->page_len * CTL_PAGE_CURRENT)); 5981 softc = control_softc; 5982 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5983 5984 user_sp = (struct copan_aps_subpage *)page_ptr; 5985 5986 modepage_info = (union ctl_modepage_info *) 5987 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 5988 5989 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 5990 modepage_info->header.subpage = page_index->subpage; 5991 modepage_info->aps.lock_active = user_sp->lock_active; 5992 5993 mtx_lock(&softc->ctl_lock); 5994 5995 /* 5996 * If there is a request to lock the LUN and another LUN is locked 5997 * this is an error. If the requested LUN is already locked ignore 5998 * the request. If no LUN is locked attempt to lock it. 5999 * if there is a request to unlock the LUN and the LUN is currently 6000 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6001 * if another LUN is locked or no LUN is locked. 6002 */ 6003 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6004 if (softc->aps_locked_lun == lun->lun) { 6005 /* 6006 * This LUN is already locked, so we're done. 6007 */ 6008 retval = CTL_RETVAL_COMPLETE; 6009 } else if (softc->aps_locked_lun == 0) { 6010 /* 6011 * No one has the lock, pass the request to the 6012 * backend. 6013 */ 6014 retval = lun->backend->config_write( 6015 (union ctl_io *)ctsio); 6016 } else { 6017 /* 6018 * Someone else has the lock, throw out the request. 6019 */ 6020 ctl_set_already_locked(ctsio); 6021 free(ctsio->kern_data_ptr, M_CTL); 6022 ctl_done((union ctl_io *)ctsio); 6023 6024 /* 6025 * Set the return value so that ctl_do_mode_select() 6026 * won't try to complete the command. We already 6027 * completed it here. 6028 */ 6029 retval = CTL_RETVAL_ERROR; 6030 } 6031 } else if (softc->aps_locked_lun == lun->lun) { 6032 /* 6033 * This LUN is locked, so pass the unlock request to the 6034 * backend. 6035 */ 6036 retval = lun->backend->config_write((union ctl_io *)ctsio); 6037 } 6038 mtx_unlock(&softc->ctl_lock); 6039 6040 return (retval); 6041} 6042 6043int 6044ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6045 struct ctl_page_index *page_index, 6046 uint8_t *page_ptr) 6047{ 6048 uint8_t *c; 6049 int i; 6050 6051 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6052 ctl_time_io_secs = 6053 (c[0] << 8) | 6054 (c[1] << 0) | 6055 0; 6056 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6057 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6058 printf("page data:"); 6059 for (i=0; i<8; i++) 6060 printf(" %.2x",page_ptr[i]); 6061 printf("\n"); 6062 return (0); 6063} 6064 6065int 6066ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6067 struct ctl_page_index *page_index, 6068 int pc) 6069{ 6070 struct copan_debugconf_subpage *page; 6071 6072 page = (struct copan_debugconf_subpage *)page_index->page_data + 6073 (page_index->page_len * pc); 6074 6075 switch (pc) { 6076 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6077 case SMS_PAGE_CTRL_DEFAULT >> 6: 6078 case SMS_PAGE_CTRL_SAVED >> 6: 6079 /* 6080 * We don't update the changable or default bits for this page. 6081 */ 6082 break; 6083 case SMS_PAGE_CTRL_CURRENT >> 6: 6084 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6085 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6086 break; 6087 default: 6088#ifdef NEEDTOPORT 6089 EPRINT(0, "Invalid PC %d!!", pc); 6090#endif /* NEEDTOPORT */ 6091 break; 6092 } 6093 return (0); 6094} 6095 6096 6097static int 6098ctl_do_mode_select(union ctl_io *io) 6099{ 6100 struct scsi_mode_page_header *page_header; 6101 struct ctl_page_index *page_index; 6102 struct ctl_scsiio *ctsio; 6103 int control_dev, page_len; 6104 int page_len_offset, page_len_size; 6105 union ctl_modepage_info *modepage_info; 6106 struct ctl_lun *lun; 6107 int *len_left, *len_used; 6108 int retval, i; 6109 6110 ctsio = &io->scsiio; 6111 page_index = NULL; 6112 page_len = 0; 6113 retval = CTL_RETVAL_COMPLETE; 6114 6115 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6116 6117 if (lun->be_lun->lun_type != T_DIRECT) 6118 control_dev = 1; 6119 else 6120 control_dev = 0; 6121 6122 modepage_info = (union ctl_modepage_info *) 6123 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6124 len_left = &modepage_info->header.len_left; 6125 len_used = &modepage_info->header.len_used; 6126 6127do_next_page: 6128 6129 page_header = (struct scsi_mode_page_header *) 6130 (ctsio->kern_data_ptr + *len_used); 6131 6132 if (*len_left == 0) { 6133 free(ctsio->kern_data_ptr, M_CTL); 6134 ctl_set_success(ctsio); 6135 ctl_done((union ctl_io *)ctsio); 6136 return (CTL_RETVAL_COMPLETE); 6137 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6138 6139 free(ctsio->kern_data_ptr, M_CTL); 6140 ctl_set_param_len_error(ctsio); 6141 ctl_done((union ctl_io *)ctsio); 6142 return (CTL_RETVAL_COMPLETE); 6143 6144 } else if ((page_header->page_code & SMPH_SPF) 6145 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6146 6147 free(ctsio->kern_data_ptr, M_CTL); 6148 ctl_set_param_len_error(ctsio); 6149 ctl_done((union ctl_io *)ctsio); 6150 return (CTL_RETVAL_COMPLETE); 6151 } 6152 6153 6154 /* 6155 * XXX KDM should we do something with the block descriptor? 6156 */ 6157 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6158 6159 if ((control_dev != 0) 6160 && (lun->mode_pages.index[i].page_flags & 6161 CTL_PAGE_FLAG_DISK_ONLY)) 6162 continue; 6163 6164 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6165 (page_header->page_code & SMPH_PC_MASK)) 6166 continue; 6167 6168 /* 6169 * If neither page has a subpage code, then we've got a 6170 * match. 6171 */ 6172 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6173 && ((page_header->page_code & SMPH_SPF) == 0)) { 6174 page_index = &lun->mode_pages.index[i]; 6175 page_len = page_header->page_length; 6176 break; 6177 } 6178 6179 /* 6180 * If both pages have subpages, then the subpage numbers 6181 * have to match. 6182 */ 6183 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6184 && (page_header->page_code & SMPH_SPF)) { 6185 struct scsi_mode_page_header_sp *sph; 6186 6187 sph = (struct scsi_mode_page_header_sp *)page_header; 6188 6189 if (lun->mode_pages.index[i].subpage == 6190 sph->subpage) { 6191 page_index = &lun->mode_pages.index[i]; 6192 page_len = scsi_2btoul(sph->page_length); 6193 break; 6194 } 6195 } 6196 } 6197 6198 /* 6199 * If we couldn't find the page, or if we don't have a mode select 6200 * handler for it, send back an error to the user. 6201 */ 6202 if ((page_index == NULL) 6203 || (page_index->select_handler == NULL)) { 6204 ctl_set_invalid_field(ctsio, 6205 /*sks_valid*/ 1, 6206 /*command*/ 0, 6207 /*field*/ *len_used, 6208 /*bit_valid*/ 0, 6209 /*bit*/ 0); 6210 free(ctsio->kern_data_ptr, M_CTL); 6211 ctl_done((union ctl_io *)ctsio); 6212 return (CTL_RETVAL_COMPLETE); 6213 } 6214 6215 if (page_index->page_code & SMPH_SPF) { 6216 page_len_offset = 2; 6217 page_len_size = 2; 6218 } else { 6219 page_len_size = 1; 6220 page_len_offset = 1; 6221 } 6222 6223 /* 6224 * If the length the initiator gives us isn't the one we specify in 6225 * the mode page header, or if they didn't specify enough data in 6226 * the CDB to avoid truncating this page, kick out the request. 6227 */ 6228 if ((page_len != (page_index->page_len - page_len_offset - 6229 page_len_size)) 6230 || (*len_left < page_index->page_len)) { 6231 6232 6233 ctl_set_invalid_field(ctsio, 6234 /*sks_valid*/ 1, 6235 /*command*/ 0, 6236 /*field*/ *len_used + page_len_offset, 6237 /*bit_valid*/ 0, 6238 /*bit*/ 0); 6239 free(ctsio->kern_data_ptr, M_CTL); 6240 ctl_done((union ctl_io *)ctsio); 6241 return (CTL_RETVAL_COMPLETE); 6242 } 6243 6244 /* 6245 * Run through the mode page, checking to make sure that the bits 6246 * the user changed are actually legal for him to change. 6247 */ 6248 for (i = 0; i < page_index->page_len; i++) { 6249 uint8_t *user_byte, *change_mask, *current_byte; 6250 int bad_bit; 6251 int j; 6252 6253 user_byte = (uint8_t *)page_header + i; 6254 change_mask = page_index->page_data + 6255 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6256 current_byte = page_index->page_data + 6257 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6258 6259 /* 6260 * Check to see whether the user set any bits in this byte 6261 * that he is not allowed to set. 6262 */ 6263 if ((*user_byte & ~(*change_mask)) == 6264 (*current_byte & ~(*change_mask))) 6265 continue; 6266 6267 /* 6268 * Go through bit by bit to determine which one is illegal. 6269 */ 6270 bad_bit = 0; 6271 for (j = 7; j >= 0; j--) { 6272 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6273 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6274 bad_bit = i; 6275 break; 6276 } 6277 } 6278 ctl_set_invalid_field(ctsio, 6279 /*sks_valid*/ 1, 6280 /*command*/ 0, 6281 /*field*/ *len_used + i, 6282 /*bit_valid*/ 1, 6283 /*bit*/ bad_bit); 6284 free(ctsio->kern_data_ptr, M_CTL); 6285 ctl_done((union ctl_io *)ctsio); 6286 return (CTL_RETVAL_COMPLETE); 6287 } 6288 6289 /* 6290 * Decrement these before we call the page handler, since we may 6291 * end up getting called back one way or another before the handler 6292 * returns to this context. 6293 */ 6294 *len_left -= page_index->page_len; 6295 *len_used += page_index->page_len; 6296 6297 retval = page_index->select_handler(ctsio, page_index, 6298 (uint8_t *)page_header); 6299 6300 /* 6301 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6302 * wait until this queued command completes to finish processing 6303 * the mode page. If it returns anything other than 6304 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6305 * already set the sense information, freed the data pointer, and 6306 * completed the io for us. 6307 */ 6308 if (retval != CTL_RETVAL_COMPLETE) 6309 goto bailout_no_done; 6310 6311 /* 6312 * If the initiator sent us more than one page, parse the next one. 6313 */ 6314 if (*len_left > 0) 6315 goto do_next_page; 6316 6317 ctl_set_success(ctsio); 6318 free(ctsio->kern_data_ptr, M_CTL); 6319 ctl_done((union ctl_io *)ctsio); 6320 6321bailout_no_done: 6322 6323 return (CTL_RETVAL_COMPLETE); 6324 6325} 6326 6327int 6328ctl_mode_select(struct ctl_scsiio *ctsio) 6329{ 6330 int param_len, pf, sp; 6331 int header_size, bd_len; 6332 int len_left, len_used; 6333 struct ctl_page_index *page_index; 6334 struct ctl_lun *lun; 6335 int control_dev, page_len; 6336 union ctl_modepage_info *modepage_info; 6337 int retval; 6338 6339 pf = 0; 6340 sp = 0; 6341 page_len = 0; 6342 len_used = 0; 6343 len_left = 0; 6344 retval = 0; 6345 bd_len = 0; 6346 page_index = NULL; 6347 6348 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6349 6350 if (lun->be_lun->lun_type != T_DIRECT) 6351 control_dev = 1; 6352 else 6353 control_dev = 0; 6354 6355 switch (ctsio->cdb[0]) { 6356 case MODE_SELECT_6: { 6357 struct scsi_mode_select_6 *cdb; 6358 6359 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6360 6361 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6362 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6363 6364 param_len = cdb->length; 6365 header_size = sizeof(struct scsi_mode_header_6); 6366 break; 6367 } 6368 case MODE_SELECT_10: { 6369 struct scsi_mode_select_10 *cdb; 6370 6371 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6372 6373 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6374 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6375 6376 param_len = scsi_2btoul(cdb->length); 6377 header_size = sizeof(struct scsi_mode_header_10); 6378 break; 6379 } 6380 default: 6381 ctl_set_invalid_opcode(ctsio); 6382 ctl_done((union ctl_io *)ctsio); 6383 return (CTL_RETVAL_COMPLETE); 6384 break; /* NOTREACHED */ 6385 } 6386 6387 /* 6388 * From SPC-3: 6389 * "A parameter list length of zero indicates that the Data-Out Buffer 6390 * shall be empty. This condition shall not be considered as an error." 6391 */ 6392 if (param_len == 0) { 6393 ctl_set_success(ctsio); 6394 ctl_done((union ctl_io *)ctsio); 6395 return (CTL_RETVAL_COMPLETE); 6396 } 6397 6398 /* 6399 * Since we'll hit this the first time through, prior to 6400 * allocation, we don't need to free a data buffer here. 6401 */ 6402 if (param_len < header_size) { 6403 ctl_set_param_len_error(ctsio); 6404 ctl_done((union ctl_io *)ctsio); 6405 return (CTL_RETVAL_COMPLETE); 6406 } 6407 6408 /* 6409 * Allocate the data buffer and grab the user's data. In theory, 6410 * we shouldn't have to sanity check the parameter list length here 6411 * because the maximum size is 64K. We should be able to malloc 6412 * that much without too many problems. 6413 */ 6414 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6415 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6416 ctsio->kern_data_len = param_len; 6417 ctsio->kern_total_len = param_len; 6418 ctsio->kern_data_resid = 0; 6419 ctsio->kern_rel_offset = 0; 6420 ctsio->kern_sg_entries = 0; 6421 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6422 ctsio->be_move_done = ctl_config_move_done; 6423 ctl_datamove((union ctl_io *)ctsio); 6424 6425 return (CTL_RETVAL_COMPLETE); 6426 } 6427 6428 switch (ctsio->cdb[0]) { 6429 case MODE_SELECT_6: { 6430 struct scsi_mode_header_6 *mh6; 6431 6432 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6433 bd_len = mh6->blk_desc_len; 6434 break; 6435 } 6436 case MODE_SELECT_10: { 6437 struct scsi_mode_header_10 *mh10; 6438 6439 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6440 bd_len = scsi_2btoul(mh10->blk_desc_len); 6441 break; 6442 } 6443 default: 6444 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6445 break; 6446 } 6447 6448 if (param_len < (header_size + bd_len)) { 6449 free(ctsio->kern_data_ptr, M_CTL); 6450 ctl_set_param_len_error(ctsio); 6451 ctl_done((union ctl_io *)ctsio); 6452 return (CTL_RETVAL_COMPLETE); 6453 } 6454 6455 /* 6456 * Set the IO_CONT flag, so that if this I/O gets passed to 6457 * ctl_config_write_done(), it'll get passed back to 6458 * ctl_do_mode_select() for further processing, or completion if 6459 * we're all done. 6460 */ 6461 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6462 ctsio->io_cont = ctl_do_mode_select; 6463 6464 modepage_info = (union ctl_modepage_info *) 6465 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6466 6467 memset(modepage_info, 0, sizeof(*modepage_info)); 6468 6469 len_left = param_len - header_size - bd_len; 6470 len_used = header_size + bd_len; 6471 6472 modepage_info->header.len_left = len_left; 6473 modepage_info->header.len_used = len_used; 6474 6475 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6476} 6477 6478int 6479ctl_mode_sense(struct ctl_scsiio *ctsio) 6480{ 6481 struct ctl_lun *lun; 6482 int pc, page_code, dbd, llba, subpage; 6483 int alloc_len, page_len, header_len, total_len; 6484 struct scsi_mode_block_descr *block_desc; 6485 struct ctl_page_index *page_index; 6486 int control_dev; 6487 6488 dbd = 0; 6489 llba = 0; 6490 block_desc = NULL; 6491 page_index = NULL; 6492 6493 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6494 6495 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6496 6497 if (lun->be_lun->lun_type != T_DIRECT) 6498 control_dev = 1; 6499 else 6500 control_dev = 0; 6501 6502 switch (ctsio->cdb[0]) { 6503 case MODE_SENSE_6: { 6504 struct scsi_mode_sense_6 *cdb; 6505 6506 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6507 6508 header_len = sizeof(struct scsi_mode_hdr_6); 6509 if (cdb->byte2 & SMS_DBD) 6510 dbd = 1; 6511 else 6512 header_len += sizeof(struct scsi_mode_block_descr); 6513 6514 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6515 page_code = cdb->page & SMS_PAGE_CODE; 6516 subpage = cdb->subpage; 6517 alloc_len = cdb->length; 6518 break; 6519 } 6520 case MODE_SENSE_10: { 6521 struct scsi_mode_sense_10 *cdb; 6522 6523 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6524 6525 header_len = sizeof(struct scsi_mode_hdr_10); 6526 6527 if (cdb->byte2 & SMS_DBD) 6528 dbd = 1; 6529 else 6530 header_len += sizeof(struct scsi_mode_block_descr); 6531 if (cdb->byte2 & SMS10_LLBAA) 6532 llba = 1; 6533 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6534 page_code = cdb->page & SMS_PAGE_CODE; 6535 subpage = cdb->subpage; 6536 alloc_len = scsi_2btoul(cdb->length); 6537 break; 6538 } 6539 default: 6540 ctl_set_invalid_opcode(ctsio); 6541 ctl_done((union ctl_io *)ctsio); 6542 return (CTL_RETVAL_COMPLETE); 6543 break; /* NOTREACHED */ 6544 } 6545 6546 /* 6547 * We have to make a first pass through to calculate the size of 6548 * the pages that match the user's query. Then we allocate enough 6549 * memory to hold it, and actually copy the data into the buffer. 6550 */ 6551 switch (page_code) { 6552 case SMS_ALL_PAGES_PAGE: { 6553 int i; 6554 6555 page_len = 0; 6556 6557 /* 6558 * At the moment, values other than 0 and 0xff here are 6559 * reserved according to SPC-3. 6560 */ 6561 if ((subpage != SMS_SUBPAGE_PAGE_0) 6562 && (subpage != SMS_SUBPAGE_ALL)) { 6563 ctl_set_invalid_field(ctsio, 6564 /*sks_valid*/ 1, 6565 /*command*/ 1, 6566 /*field*/ 3, 6567 /*bit_valid*/ 0, 6568 /*bit*/ 0); 6569 ctl_done((union ctl_io *)ctsio); 6570 return (CTL_RETVAL_COMPLETE); 6571 } 6572 6573 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6574 if ((control_dev != 0) 6575 && (lun->mode_pages.index[i].page_flags & 6576 CTL_PAGE_FLAG_DISK_ONLY)) 6577 continue; 6578 6579 /* 6580 * We don't use this subpage if the user didn't 6581 * request all subpages. 6582 */ 6583 if ((lun->mode_pages.index[i].subpage != 0) 6584 && (subpage == SMS_SUBPAGE_PAGE_0)) 6585 continue; 6586 6587#if 0 6588 printf("found page %#x len %d\n", 6589 lun->mode_pages.index[i].page_code & 6590 SMPH_PC_MASK, 6591 lun->mode_pages.index[i].page_len); 6592#endif 6593 page_len += lun->mode_pages.index[i].page_len; 6594 } 6595 break; 6596 } 6597 default: { 6598 int i; 6599 6600 page_len = 0; 6601 6602 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6603 /* Look for the right page code */ 6604 if ((lun->mode_pages.index[i].page_code & 6605 SMPH_PC_MASK) != page_code) 6606 continue; 6607 6608 /* Look for the right subpage or the subpage wildcard*/ 6609 if ((lun->mode_pages.index[i].subpage != subpage) 6610 && (subpage != SMS_SUBPAGE_ALL)) 6611 continue; 6612 6613 /* Make sure the page is supported for this dev type */ 6614 if ((control_dev != 0) 6615 && (lun->mode_pages.index[i].page_flags & 6616 CTL_PAGE_FLAG_DISK_ONLY)) 6617 continue; 6618 6619#if 0 6620 printf("found page %#x len %d\n", 6621 lun->mode_pages.index[i].page_code & 6622 SMPH_PC_MASK, 6623 lun->mode_pages.index[i].page_len); 6624#endif 6625 6626 page_len += lun->mode_pages.index[i].page_len; 6627 } 6628 6629 if (page_len == 0) { 6630 ctl_set_invalid_field(ctsio, 6631 /*sks_valid*/ 1, 6632 /*command*/ 1, 6633 /*field*/ 2, 6634 /*bit_valid*/ 1, 6635 /*bit*/ 5); 6636 ctl_done((union ctl_io *)ctsio); 6637 return (CTL_RETVAL_COMPLETE); 6638 } 6639 break; 6640 } 6641 } 6642 6643 total_len = header_len + page_len; 6644#if 0 6645 printf("header_len = %d, page_len = %d, total_len = %d\n", 6646 header_len, page_len, total_len); 6647#endif 6648 6649 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6650 ctsio->kern_sg_entries = 0; 6651 ctsio->kern_data_resid = 0; 6652 ctsio->kern_rel_offset = 0; 6653 if (total_len < alloc_len) { 6654 ctsio->residual = alloc_len - total_len; 6655 ctsio->kern_data_len = total_len; 6656 ctsio->kern_total_len = total_len; 6657 } else { 6658 ctsio->residual = 0; 6659 ctsio->kern_data_len = alloc_len; 6660 ctsio->kern_total_len = alloc_len; 6661 } 6662 6663 switch (ctsio->cdb[0]) { 6664 case MODE_SENSE_6: { 6665 struct scsi_mode_hdr_6 *header; 6666 6667 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6668 6669 header->datalen = ctl_min(total_len - 1, 254); 6670 6671 if (dbd) 6672 header->block_descr_len = 0; 6673 else 6674 header->block_descr_len = 6675 sizeof(struct scsi_mode_block_descr); 6676 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6677 break; 6678 } 6679 case MODE_SENSE_10: { 6680 struct scsi_mode_hdr_10 *header; 6681 int datalen; 6682 6683 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6684 6685 datalen = ctl_min(total_len - 2, 65533); 6686 scsi_ulto2b(datalen, header->datalen); 6687 if (dbd) 6688 scsi_ulto2b(0, header->block_descr_len); 6689 else 6690 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6691 header->block_descr_len); 6692 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6693 break; 6694 } 6695 default: 6696 panic("invalid CDB type %#x", ctsio->cdb[0]); 6697 break; /* NOTREACHED */ 6698 } 6699 6700 /* 6701 * If we've got a disk, use its blocksize in the block 6702 * descriptor. Otherwise, just set it to 0. 6703 */ 6704 if (dbd == 0) { 6705 if (control_dev != 0) 6706 scsi_ulto3b(lun->be_lun->blocksize, 6707 block_desc->block_len); 6708 else 6709 scsi_ulto3b(0, block_desc->block_len); 6710 } 6711 6712 switch (page_code) { 6713 case SMS_ALL_PAGES_PAGE: { 6714 int i, data_used; 6715 6716 data_used = header_len; 6717 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6718 struct ctl_page_index *page_index; 6719 6720 page_index = &lun->mode_pages.index[i]; 6721 6722 if ((control_dev != 0) 6723 && (page_index->page_flags & 6724 CTL_PAGE_FLAG_DISK_ONLY)) 6725 continue; 6726 6727 /* 6728 * We don't use this subpage if the user didn't 6729 * request all subpages. We already checked (above) 6730 * to make sure the user only specified a subpage 6731 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6732 */ 6733 if ((page_index->subpage != 0) 6734 && (subpage == SMS_SUBPAGE_PAGE_0)) 6735 continue; 6736 6737 /* 6738 * Call the handler, if it exists, to update the 6739 * page to the latest values. 6740 */ 6741 if (page_index->sense_handler != NULL) 6742 page_index->sense_handler(ctsio, page_index,pc); 6743 6744 memcpy(ctsio->kern_data_ptr + data_used, 6745 page_index->page_data + 6746 (page_index->page_len * pc), 6747 page_index->page_len); 6748 data_used += page_index->page_len; 6749 } 6750 break; 6751 } 6752 default: { 6753 int i, data_used; 6754 6755 data_used = header_len; 6756 6757 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6758 struct ctl_page_index *page_index; 6759 6760 page_index = &lun->mode_pages.index[i]; 6761 6762 /* Look for the right page code */ 6763 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6764 continue; 6765 6766 /* Look for the right subpage or the subpage wildcard*/ 6767 if ((page_index->subpage != subpage) 6768 && (subpage != SMS_SUBPAGE_ALL)) 6769 continue; 6770 6771 /* Make sure the page is supported for this dev type */ 6772 if ((control_dev != 0) 6773 && (page_index->page_flags & 6774 CTL_PAGE_FLAG_DISK_ONLY)) 6775 continue; 6776 6777 /* 6778 * Call the handler, if it exists, to update the 6779 * page to the latest values. 6780 */ 6781 if (page_index->sense_handler != NULL) 6782 page_index->sense_handler(ctsio, page_index,pc); 6783 6784 memcpy(ctsio->kern_data_ptr + data_used, 6785 page_index->page_data + 6786 (page_index->page_len * pc), 6787 page_index->page_len); 6788 data_used += page_index->page_len; 6789 } 6790 break; 6791 } 6792 } 6793 6794 ctsio->scsi_status = SCSI_STATUS_OK; 6795 6796 ctsio->be_move_done = ctl_config_move_done; 6797 ctl_datamove((union ctl_io *)ctsio); 6798 6799 return (CTL_RETVAL_COMPLETE); 6800} 6801 6802int 6803ctl_read_capacity(struct ctl_scsiio *ctsio) 6804{ 6805 struct scsi_read_capacity *cdb; 6806 struct scsi_read_capacity_data *data; 6807 struct ctl_lun *lun; 6808 uint32_t lba; 6809 6810 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6811 6812 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6813 6814 lba = scsi_4btoul(cdb->addr); 6815 if (((cdb->pmi & SRC_PMI) == 0) 6816 && (lba != 0)) { 6817 ctl_set_invalid_field(/*ctsio*/ ctsio, 6818 /*sks_valid*/ 1, 6819 /*command*/ 1, 6820 /*field*/ 2, 6821 /*bit_valid*/ 0, 6822 /*bit*/ 0); 6823 ctl_done((union ctl_io *)ctsio); 6824 return (CTL_RETVAL_COMPLETE); 6825 } 6826 6827 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6828 6829 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6830 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6831 ctsio->residual = 0; 6832 ctsio->kern_data_len = sizeof(*data); 6833 ctsio->kern_total_len = sizeof(*data); 6834 ctsio->kern_data_resid = 0; 6835 ctsio->kern_rel_offset = 0; 6836 ctsio->kern_sg_entries = 0; 6837 6838 /* 6839 * If the maximum LBA is greater than 0xfffffffe, the user must 6840 * issue a SERVICE ACTION IN (16) command, with the read capacity 6841 * serivce action set. 6842 */ 6843 if (lun->be_lun->maxlba > 0xfffffffe) 6844 scsi_ulto4b(0xffffffff, data->addr); 6845 else 6846 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6847 6848 /* 6849 * XXX KDM this may not be 512 bytes... 6850 */ 6851 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6852 6853 ctsio->scsi_status = SCSI_STATUS_OK; 6854 6855 ctsio->be_move_done = ctl_config_move_done; 6856 ctl_datamove((union ctl_io *)ctsio); 6857 6858 return (CTL_RETVAL_COMPLETE); 6859} 6860 6861static int 6862ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6863{ 6864 struct scsi_read_capacity_16 *cdb; 6865 struct scsi_read_capacity_data_long *data; 6866 struct ctl_lun *lun; 6867 uint64_t lba; 6868 uint32_t alloc_len; 6869 6870 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6871 6872 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6873 6874 alloc_len = scsi_4btoul(cdb->alloc_len); 6875 lba = scsi_8btou64(cdb->addr); 6876 6877 if ((cdb->reladr & SRC16_PMI) 6878 && (lba != 0)) { 6879 ctl_set_invalid_field(/*ctsio*/ ctsio, 6880 /*sks_valid*/ 1, 6881 /*command*/ 1, 6882 /*field*/ 2, 6883 /*bit_valid*/ 0, 6884 /*bit*/ 0); 6885 ctl_done((union ctl_io *)ctsio); 6886 return (CTL_RETVAL_COMPLETE); 6887 } 6888 6889 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6890 6891 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6892 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6893 6894 if (sizeof(*data) < alloc_len) { 6895 ctsio->residual = alloc_len - sizeof(*data); 6896 ctsio->kern_data_len = sizeof(*data); 6897 ctsio->kern_total_len = sizeof(*data); 6898 } else { 6899 ctsio->residual = 0; 6900 ctsio->kern_data_len = alloc_len; 6901 ctsio->kern_total_len = alloc_len; 6902 } 6903 ctsio->kern_data_resid = 0; 6904 ctsio->kern_rel_offset = 0; 6905 ctsio->kern_sg_entries = 0; 6906 6907 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 6908 /* XXX KDM this may not be 512 bytes... */ 6909 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6910 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 6911 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 6912 6913 ctsio->scsi_status = SCSI_STATUS_OK; 6914 6915 ctsio->be_move_done = ctl_config_move_done; 6916 ctl_datamove((union ctl_io *)ctsio); 6917 6918 return (CTL_RETVAL_COMPLETE); 6919} 6920 6921int 6922ctl_service_action_in(struct ctl_scsiio *ctsio) 6923{ 6924 struct scsi_service_action_in *cdb; 6925 int retval; 6926 6927 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 6928 6929 cdb = (struct scsi_service_action_in *)ctsio->cdb; 6930 6931 retval = CTL_RETVAL_COMPLETE; 6932 6933 switch (cdb->service_action) { 6934 case SRC16_SERVICE_ACTION: 6935 retval = ctl_read_capacity_16(ctsio); 6936 break; 6937 default: 6938 ctl_set_invalid_field(/*ctsio*/ ctsio, 6939 /*sks_valid*/ 1, 6940 /*command*/ 1, 6941 /*field*/ 1, 6942 /*bit_valid*/ 1, 6943 /*bit*/ 4); 6944 ctl_done((union ctl_io *)ctsio); 6945 break; 6946 } 6947 6948 return (retval); 6949} 6950 6951int 6952ctl_maintenance_in(struct ctl_scsiio *ctsio) 6953{ 6954 struct scsi_maintenance_in *cdb; 6955 int retval; 6956 int alloc_len, total_len = 0; 6957 int num_target_port_groups, single; 6958 struct ctl_lun *lun; 6959 struct ctl_softc *softc; 6960 struct scsi_target_group_data *rtg_ptr; 6961 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 6962 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 6963 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 6964 6965 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 6966 6967 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 6968 softc = control_softc; 6969 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6970 6971 retval = CTL_RETVAL_COMPLETE; 6972 6973 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 6974 ctl_set_invalid_field(/*ctsio*/ ctsio, 6975 /*sks_valid*/ 1, 6976 /*command*/ 1, 6977 /*field*/ 1, 6978 /*bit_valid*/ 1, 6979 /*bit*/ 4); 6980 ctl_done((union ctl_io *)ctsio); 6981 return(retval); 6982 } 6983 6984 mtx_lock(&softc->ctl_lock); 6985 single = ctl_is_single; 6986 mtx_unlock(&softc->ctl_lock); 6987 6988 if (single) 6989 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 6990 else 6991 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 6992 6993 total_len = sizeof(struct scsi_target_group_data) + 6994 sizeof(struct scsi_target_port_group_descriptor) * 6995 num_target_port_groups + 6996 sizeof(struct scsi_target_port_descriptor) * 6997 NUM_PORTS_PER_GRP * num_target_port_groups; 6998 6999 alloc_len = scsi_4btoul(cdb->length); 7000 7001 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7002 7003 ctsio->kern_sg_entries = 0; 7004 7005 if (total_len < alloc_len) { 7006 ctsio->residual = alloc_len - total_len; 7007 ctsio->kern_data_len = total_len; 7008 ctsio->kern_total_len = total_len; 7009 } else { 7010 ctsio->residual = 0; 7011 ctsio->kern_data_len = alloc_len; 7012 ctsio->kern_total_len = alloc_len; 7013 } 7014 ctsio->kern_data_resid = 0; 7015 ctsio->kern_rel_offset = 0; 7016 7017 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7018 7019 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7020 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7021 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7022 &tp_desc_ptr1_1->desc_list[0]; 7023 7024 if (single == 0) { 7025 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7026 &tp_desc_ptr1_2->desc_list[0]; 7027 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7028 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7029 &tp_desc_ptr2_1->desc_list[0]; 7030 } else { 7031 tpg_desc_ptr2 = NULL; 7032 tp_desc_ptr2_1 = NULL; 7033 tp_desc_ptr2_2 = NULL; 7034 } 7035 7036 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7037 if (single == 0) { 7038 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7039 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7040 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7041 tpg_desc_ptr2->pref_state = 7042 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7043 } else { 7044 tpg_desc_ptr1->pref_state = 7045 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7046 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7047 } 7048 } else { 7049 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7050 tpg_desc_ptr1->pref_state = 7051 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7052 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7053 } else { 7054 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7055 tpg_desc_ptr2->pref_state = 7056 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7057 } 7058 } 7059 } else { 7060 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7061 } 7062 tpg_desc_ptr1->support = 0; 7063 tpg_desc_ptr1->target_port_group[1] = 1; 7064 tpg_desc_ptr1->status = TPG_IMPLICIT; 7065 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7066 7067 if (single == 0) { 7068 tpg_desc_ptr2->support = 0; 7069 tpg_desc_ptr2->target_port_group[1] = 2; 7070 tpg_desc_ptr2->status = TPG_IMPLICIT; 7071 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7072 7073 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7074 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7075 7076 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7077 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7078 } else { 7079 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7080 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7081 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7082 } else { 7083 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7084 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7085 } 7086 } 7087 7088 ctsio->be_move_done = ctl_config_move_done; 7089 7090 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7091 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7092 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7093 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7094 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7095 7096 ctl_datamove((union ctl_io *)ctsio); 7097 return(retval); 7098} 7099 7100int 7101ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7102{ 7103 struct scsi_per_res_in *cdb; 7104 int alloc_len, total_len = 0; 7105 /* struct scsi_per_res_in_rsrv in_data; */ 7106 struct ctl_lun *lun; 7107 struct ctl_softc *softc; 7108 7109 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7110 7111 softc = control_softc; 7112 7113 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7114 7115 alloc_len = scsi_2btoul(cdb->length); 7116 7117 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7118 7119retry: 7120 mtx_lock(&softc->ctl_lock); 7121 switch (cdb->action) { 7122 case SPRI_RK: /* read keys */ 7123 total_len = sizeof(struct scsi_per_res_in_keys) + 7124 lun->pr_key_count * 7125 sizeof(struct scsi_per_res_key); 7126 break; 7127 case SPRI_RR: /* read reservation */ 7128 if (lun->flags & CTL_LUN_PR_RESERVED) 7129 total_len = sizeof(struct scsi_per_res_in_rsrv); 7130 else 7131 total_len = sizeof(struct scsi_per_res_in_header); 7132 break; 7133 case SPRI_RC: /* report capabilities */ 7134 total_len = sizeof(struct scsi_per_res_cap); 7135 break; 7136 case SPRI_RS: /* read full status */ 7137 default: 7138 mtx_unlock(&softc->ctl_lock); 7139 ctl_set_invalid_field(ctsio, 7140 /*sks_valid*/ 1, 7141 /*command*/ 1, 7142 /*field*/ 1, 7143 /*bit_valid*/ 1, 7144 /*bit*/ 0); 7145 ctl_done((union ctl_io *)ctsio); 7146 return (CTL_RETVAL_COMPLETE); 7147 break; /* NOTREACHED */ 7148 } 7149 mtx_unlock(&softc->ctl_lock); 7150 7151 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7152 7153 if (total_len < alloc_len) { 7154 ctsio->residual = alloc_len - total_len; 7155 ctsio->kern_data_len = total_len; 7156 ctsio->kern_total_len = total_len; 7157 } else { 7158 ctsio->residual = 0; 7159 ctsio->kern_data_len = alloc_len; 7160 ctsio->kern_total_len = alloc_len; 7161 } 7162 7163 ctsio->kern_data_resid = 0; 7164 ctsio->kern_rel_offset = 0; 7165 ctsio->kern_sg_entries = 0; 7166 7167 mtx_lock(&softc->ctl_lock); 7168 switch (cdb->action) { 7169 case SPRI_RK: { // read keys 7170 struct scsi_per_res_in_keys *res_keys; 7171 int i, key_count; 7172 7173 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7174 7175 /* 7176 * We had to drop the lock to allocate our buffer, which 7177 * leaves time for someone to come in with another 7178 * persistent reservation. (That is unlikely, though, 7179 * since this should be the only persistent reservation 7180 * command active right now.) 7181 */ 7182 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7183 (lun->pr_key_count * 7184 sizeof(struct scsi_per_res_key)))){ 7185 mtx_unlock(&softc->ctl_lock); 7186 free(ctsio->kern_data_ptr, M_CTL); 7187 printf("%s: reservation length changed, retrying\n", 7188 __func__); 7189 goto retry; 7190 } 7191 7192 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7193 7194 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7195 lun->pr_key_count, res_keys->header.length); 7196 7197 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7198 if (!lun->per_res[i].registered) 7199 continue; 7200 7201 /* 7202 * We used lun->pr_key_count to calculate the 7203 * size to allocate. If it turns out the number of 7204 * initiators with the registered flag set is 7205 * larger than that (i.e. they haven't been kept in 7206 * sync), we've got a problem. 7207 */ 7208 if (key_count >= lun->pr_key_count) { 7209#ifdef NEEDTOPORT 7210 csevent_log(CSC_CTL | CSC_SHELF_SW | 7211 CTL_PR_ERROR, 7212 csevent_LogType_Fault, 7213 csevent_AlertLevel_Yellow, 7214 csevent_FRU_ShelfController, 7215 csevent_FRU_Firmware, 7216 csevent_FRU_Unknown, 7217 "registered keys %d >= key " 7218 "count %d", key_count, 7219 lun->pr_key_count); 7220#endif 7221 key_count++; 7222 continue; 7223 } 7224 memcpy(res_keys->keys[key_count].key, 7225 lun->per_res[i].res_key.key, 7226 ctl_min(sizeof(res_keys->keys[key_count].key), 7227 sizeof(lun->per_res[i].res_key))); 7228 key_count++; 7229 } 7230 break; 7231 } 7232 case SPRI_RR: { // read reservation 7233 struct scsi_per_res_in_rsrv *res; 7234 int tmp_len, header_only; 7235 7236 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7237 7238 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7239 7240 if (lun->flags & CTL_LUN_PR_RESERVED) 7241 { 7242 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7243 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7244 res->header.length); 7245 header_only = 0; 7246 } else { 7247 tmp_len = sizeof(struct scsi_per_res_in_header); 7248 scsi_ulto4b(0, res->header.length); 7249 header_only = 1; 7250 } 7251 7252 /* 7253 * We had to drop the lock to allocate our buffer, which 7254 * leaves time for someone to come in with another 7255 * persistent reservation. (That is unlikely, though, 7256 * since this should be the only persistent reservation 7257 * command active right now.) 7258 */ 7259 if (tmp_len != total_len) { 7260 mtx_unlock(&softc->ctl_lock); 7261 free(ctsio->kern_data_ptr, M_CTL); 7262 printf("%s: reservation status changed, retrying\n", 7263 __func__); 7264 goto retry; 7265 } 7266 7267 /* 7268 * No reservation held, so we're done. 7269 */ 7270 if (header_only != 0) 7271 break; 7272 7273 /* 7274 * If the registration is an All Registrants type, the key 7275 * is 0, since it doesn't really matter. 7276 */ 7277 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7278 memcpy(res->data.reservation, 7279 &lun->per_res[lun->pr_res_idx].res_key, 7280 sizeof(struct scsi_per_res_key)); 7281 } 7282 res->data.scopetype = lun->res_type; 7283 break; 7284 } 7285 case SPRI_RC: //report capabilities 7286 { 7287 struct scsi_per_res_cap *res_cap; 7288 uint16_t type_mask; 7289 7290 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7291 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7292 res_cap->flags2 |= SPRI_TMV; 7293 type_mask = SPRI_TM_WR_EX_AR | 7294 SPRI_TM_EX_AC_RO | 7295 SPRI_TM_WR_EX_RO | 7296 SPRI_TM_EX_AC | 7297 SPRI_TM_WR_EX | 7298 SPRI_TM_EX_AC_AR; 7299 scsi_ulto2b(type_mask, res_cap->type_mask); 7300 break; 7301 } 7302 case SPRI_RS: //read full status 7303 default: 7304 /* 7305 * This is a bug, because we just checked for this above, 7306 * and should have returned an error. 7307 */ 7308 panic("Invalid PR type %x", cdb->action); 7309 break; /* NOTREACHED */ 7310 } 7311 mtx_unlock(&softc->ctl_lock); 7312 7313 ctsio->be_move_done = ctl_config_move_done; 7314 7315 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7316 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7317 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7318 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7319 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7320 7321 ctl_datamove((union ctl_io *)ctsio); 7322 7323 return (CTL_RETVAL_COMPLETE); 7324} 7325 7326/* 7327 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7328 * it should return. 7329 */ 7330static int 7331ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7332 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7333 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7334 struct scsi_per_res_out_parms* param) 7335{ 7336 union ctl_ha_msg persis_io; 7337 int retval, i; 7338 int isc_retval; 7339 7340 retval = 0; 7341 7342 if (sa_res_key == 0) { 7343 mtx_lock(&softc->ctl_lock); 7344 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7345 /* validate scope and type */ 7346 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7347 SPR_LU_SCOPE) { 7348 mtx_unlock(&softc->ctl_lock); 7349 ctl_set_invalid_field(/*ctsio*/ ctsio, 7350 /*sks_valid*/ 1, 7351 /*command*/ 1, 7352 /*field*/ 2, 7353 /*bit_valid*/ 1, 7354 /*bit*/ 4); 7355 ctl_done((union ctl_io *)ctsio); 7356 return (1); 7357 } 7358 7359 if (type>8 || type==2 || type==4 || type==0) { 7360 mtx_unlock(&softc->ctl_lock); 7361 ctl_set_invalid_field(/*ctsio*/ ctsio, 7362 /*sks_valid*/ 1, 7363 /*command*/ 1, 7364 /*field*/ 2, 7365 /*bit_valid*/ 1, 7366 /*bit*/ 0); 7367 ctl_done((union ctl_io *)ctsio); 7368 return (1); 7369 } 7370 7371 /* temporarily unregister this nexus */ 7372 lun->per_res[residx].registered = 0; 7373 7374 /* 7375 * Unregister everybody else and build UA for 7376 * them 7377 */ 7378 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7379 if (lun->per_res[i].registered == 0) 7380 continue; 7381 7382 if (!persis_offset 7383 && i <CTL_MAX_INITIATORS) 7384 lun->pending_sense[i].ua_pending |= 7385 CTL_UA_REG_PREEMPT; 7386 else if (persis_offset 7387 && i >= persis_offset) 7388 lun->pending_sense[i-persis_offset 7389 ].ua_pending |= 7390 CTL_UA_REG_PREEMPT; 7391 lun->per_res[i].registered = 0; 7392 memset(&lun->per_res[i].res_key, 0, 7393 sizeof(struct scsi_per_res_key)); 7394 } 7395 lun->per_res[residx].registered = 1; 7396 lun->pr_key_count = 1; 7397 lun->res_type = type; 7398 if (lun->res_type != SPR_TYPE_WR_EX_AR 7399 && lun->res_type != SPR_TYPE_EX_AC_AR) 7400 lun->pr_res_idx = residx; 7401 7402 mtx_unlock(&softc->ctl_lock); 7403 /* send msg to other side */ 7404 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7405 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7406 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7407 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7408 persis_io.pr.pr_info.res_type = type; 7409 memcpy(persis_io.pr.pr_info.sa_res_key, 7410 param->serv_act_res_key, 7411 sizeof(param->serv_act_res_key)); 7412 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7413 &persis_io, sizeof(persis_io), 0)) > 7414 CTL_HA_STATUS_SUCCESS) { 7415 printf("CTL:Persis Out error returned " 7416 "from ctl_ha_msg_send %d\n", 7417 isc_retval); 7418 } 7419 } else { 7420 /* not all registrants */ 7421 mtx_unlock(&softc->ctl_lock); 7422 free(ctsio->kern_data_ptr, M_CTL); 7423 ctl_set_invalid_field(ctsio, 7424 /*sks_valid*/ 1, 7425 /*command*/ 0, 7426 /*field*/ 8, 7427 /*bit_valid*/ 0, 7428 /*bit*/ 0); 7429 ctl_done((union ctl_io *)ctsio); 7430 return (1); 7431 } 7432 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7433 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7434 int found = 0; 7435 7436 mtx_lock(&softc->ctl_lock); 7437 if (res_key == sa_res_key) { 7438 /* special case */ 7439 /* 7440 * The spec implies this is not good but doesn't 7441 * say what to do. There are two choices either 7442 * generate a res conflict or check condition 7443 * with illegal field in parameter data. Since 7444 * that is what is done when the sa_res_key is 7445 * zero I'll take that approach since this has 7446 * to do with the sa_res_key. 7447 */ 7448 mtx_unlock(&softc->ctl_lock); 7449 free(ctsio->kern_data_ptr, M_CTL); 7450 ctl_set_invalid_field(ctsio, 7451 /*sks_valid*/ 1, 7452 /*command*/ 0, 7453 /*field*/ 8, 7454 /*bit_valid*/ 0, 7455 /*bit*/ 0); 7456 ctl_done((union ctl_io *)ctsio); 7457 return (1); 7458 } 7459 7460 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7461 if (lun->per_res[i].registered 7462 && memcmp(param->serv_act_res_key, 7463 lun->per_res[i].res_key.key, 7464 sizeof(struct scsi_per_res_key)) != 0) 7465 continue; 7466 7467 found = 1; 7468 lun->per_res[i].registered = 0; 7469 memset(&lun->per_res[i].res_key, 0, 7470 sizeof(struct scsi_per_res_key)); 7471 lun->pr_key_count--; 7472 7473 if (!persis_offset 7474 && i < CTL_MAX_INITIATORS) 7475 lun->pending_sense[i].ua_pending |= 7476 CTL_UA_REG_PREEMPT; 7477 else if (persis_offset 7478 && i >= persis_offset) 7479 lun->pending_sense[i-persis_offset].ua_pending|= 7480 CTL_UA_REG_PREEMPT; 7481 } 7482 mtx_unlock(&softc->ctl_lock); 7483 if (!found) { 7484 free(ctsio->kern_data_ptr, M_CTL); 7485 ctl_set_reservation_conflict(ctsio); 7486 ctl_done((union ctl_io *)ctsio); 7487 return (CTL_RETVAL_COMPLETE); 7488 } 7489 /* send msg to other side */ 7490 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7491 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7492 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7493 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7494 persis_io.pr.pr_info.res_type = type; 7495 memcpy(persis_io.pr.pr_info.sa_res_key, 7496 param->serv_act_res_key, 7497 sizeof(param->serv_act_res_key)); 7498 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7499 &persis_io, sizeof(persis_io), 0)) > 7500 CTL_HA_STATUS_SUCCESS) { 7501 printf("CTL:Persis Out error returned from " 7502 "ctl_ha_msg_send %d\n", isc_retval); 7503 } 7504 } else { 7505 /* Reserved but not all registrants */ 7506 /* sa_res_key is res holder */ 7507 if (memcmp(param->serv_act_res_key, 7508 lun->per_res[lun->pr_res_idx].res_key.key, 7509 sizeof(struct scsi_per_res_key)) == 0) { 7510 /* validate scope and type */ 7511 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7512 SPR_LU_SCOPE) { 7513 ctl_set_invalid_field(/*ctsio*/ ctsio, 7514 /*sks_valid*/ 1, 7515 /*command*/ 1, 7516 /*field*/ 2, 7517 /*bit_valid*/ 1, 7518 /*bit*/ 4); 7519 ctl_done((union ctl_io *)ctsio); 7520 return (1); 7521 } 7522 7523 if (type>8 || type==2 || type==4 || type==0) { 7524 ctl_set_invalid_field(/*ctsio*/ ctsio, 7525 /*sks_valid*/ 1, 7526 /*command*/ 1, 7527 /*field*/ 2, 7528 /*bit_valid*/ 1, 7529 /*bit*/ 0); 7530 ctl_done((union ctl_io *)ctsio); 7531 return (1); 7532 } 7533 7534 /* 7535 * Do the following: 7536 * if sa_res_key != res_key remove all 7537 * registrants w/sa_res_key and generate UA 7538 * for these registrants(Registrations 7539 * Preempted) if it wasn't an exclusive 7540 * reservation generate UA(Reservations 7541 * Preempted) for all other registered nexuses 7542 * if the type has changed. Establish the new 7543 * reservation and holder. If res_key and 7544 * sa_res_key are the same do the above 7545 * except don't unregister the res holder. 7546 */ 7547 7548 /* 7549 * Temporarily unregister so it won't get 7550 * removed or UA generated 7551 */ 7552 lun->per_res[residx].registered = 0; 7553 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7554 if (lun->per_res[i].registered == 0) 7555 continue; 7556 7557 if (memcmp(param->serv_act_res_key, 7558 lun->per_res[i].res_key.key, 7559 sizeof(struct scsi_per_res_key)) == 0) { 7560 lun->per_res[i].registered = 0; 7561 memset(&lun->per_res[i].res_key, 7562 0, 7563 sizeof(struct scsi_per_res_key)); 7564 lun->pr_key_count--; 7565 7566 if (!persis_offset 7567 && i < CTL_MAX_INITIATORS) 7568 lun->pending_sense[i 7569 ].ua_pending |= 7570 CTL_UA_REG_PREEMPT; 7571 else if (persis_offset 7572 && i >= persis_offset) 7573 lun->pending_sense[ 7574 i-persis_offset].ua_pending |= 7575 CTL_UA_REG_PREEMPT; 7576 } else if (type != lun->res_type 7577 && (lun->res_type == SPR_TYPE_WR_EX_RO 7578 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7579 if (!persis_offset 7580 && i < CTL_MAX_INITIATORS) 7581 lun->pending_sense[i 7582 ].ua_pending |= 7583 CTL_UA_RES_RELEASE; 7584 else if (persis_offset 7585 && i >= persis_offset) 7586 lun->pending_sense[ 7587 i-persis_offset 7588 ].ua_pending |= 7589 CTL_UA_RES_RELEASE; 7590 } 7591 } 7592 lun->per_res[residx].registered = 1; 7593 lun->res_type = type; 7594 if (lun->res_type != SPR_TYPE_WR_EX_AR 7595 && lun->res_type != SPR_TYPE_EX_AC_AR) 7596 lun->pr_res_idx = residx; 7597 else 7598 lun->pr_res_idx = 7599 CTL_PR_ALL_REGISTRANTS; 7600 7601 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7602 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7603 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7604 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7605 persis_io.pr.pr_info.res_type = type; 7606 memcpy(persis_io.pr.pr_info.sa_res_key, 7607 param->serv_act_res_key, 7608 sizeof(param->serv_act_res_key)); 7609 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7610 &persis_io, sizeof(persis_io), 0)) > 7611 CTL_HA_STATUS_SUCCESS) { 7612 printf("CTL:Persis Out error returned " 7613 "from ctl_ha_msg_send %d\n", 7614 isc_retval); 7615 } 7616 } else { 7617 /* 7618 * sa_res_key is not the res holder just 7619 * remove registrants 7620 */ 7621 int found=0; 7622 mtx_lock(&softc->ctl_lock); 7623 7624 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7625 if (memcmp(param->serv_act_res_key, 7626 lun->per_res[i].res_key.key, 7627 sizeof(struct scsi_per_res_key)) != 0) 7628 continue; 7629 7630 found = 1; 7631 lun->per_res[i].registered = 0; 7632 memset(&lun->per_res[i].res_key, 0, 7633 sizeof(struct scsi_per_res_key)); 7634 lun->pr_key_count--; 7635 7636 if (!persis_offset 7637 && i < CTL_MAX_INITIATORS) 7638 lun->pending_sense[i].ua_pending |= 7639 CTL_UA_REG_PREEMPT; 7640 else if (persis_offset 7641 && i >= persis_offset) 7642 lun->pending_sense[ 7643 i-persis_offset].ua_pending |= 7644 CTL_UA_REG_PREEMPT; 7645 } 7646 7647 if (!found) { 7648 mtx_unlock(&softc->ctl_lock); 7649 free(ctsio->kern_data_ptr, M_CTL); 7650 ctl_set_reservation_conflict(ctsio); 7651 ctl_done((union ctl_io *)ctsio); 7652 return (1); 7653 } 7654 mtx_unlock(&softc->ctl_lock); 7655 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7656 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7657 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7658 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7659 persis_io.pr.pr_info.res_type = type; 7660 memcpy(persis_io.pr.pr_info.sa_res_key, 7661 param->serv_act_res_key, 7662 sizeof(param->serv_act_res_key)); 7663 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7664 &persis_io, sizeof(persis_io), 0)) > 7665 CTL_HA_STATUS_SUCCESS) { 7666 printf("CTL:Persis Out error returned " 7667 "from ctl_ha_msg_send %d\n", 7668 isc_retval); 7669 } 7670 } 7671 } 7672 7673 lun->PRGeneration++; 7674 7675 return (retval); 7676} 7677 7678static void 7679ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7680{ 7681 int i; 7682 7683 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7684 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7685 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7686 msg->pr.pr_info.sa_res_key, 7687 sizeof(struct scsi_per_res_key)) != 0) { 7688 uint64_t sa_res_key; 7689 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7690 7691 if (sa_res_key == 0) { 7692 /* temporarily unregister this nexus */ 7693 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7694 7695 /* 7696 * Unregister everybody else and build UA for 7697 * them 7698 */ 7699 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7700 if (lun->per_res[i].registered == 0) 7701 continue; 7702 7703 if (!persis_offset 7704 && i < CTL_MAX_INITIATORS) 7705 lun->pending_sense[i].ua_pending |= 7706 CTL_UA_REG_PREEMPT; 7707 else if (persis_offset && i >= persis_offset) 7708 lun->pending_sense[i - 7709 persis_offset].ua_pending |= 7710 CTL_UA_REG_PREEMPT; 7711 lun->per_res[i].registered = 0; 7712 memset(&lun->per_res[i].res_key, 0, 7713 sizeof(struct scsi_per_res_key)); 7714 } 7715 7716 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7717 lun->pr_key_count = 1; 7718 lun->res_type = msg->pr.pr_info.res_type; 7719 if (lun->res_type != SPR_TYPE_WR_EX_AR 7720 && lun->res_type != SPR_TYPE_EX_AC_AR) 7721 lun->pr_res_idx = msg->pr.pr_info.residx; 7722 } else { 7723 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7724 if (memcmp(msg->pr.pr_info.sa_res_key, 7725 lun->per_res[i].res_key.key, 7726 sizeof(struct scsi_per_res_key)) != 0) 7727 continue; 7728 7729 lun->per_res[i].registered = 0; 7730 memset(&lun->per_res[i].res_key, 0, 7731 sizeof(struct scsi_per_res_key)); 7732 lun->pr_key_count--; 7733 7734 if (!persis_offset 7735 && i < persis_offset) 7736 lun->pending_sense[i].ua_pending |= 7737 CTL_UA_REG_PREEMPT; 7738 else if (persis_offset 7739 && i >= persis_offset) 7740 lun->pending_sense[i - 7741 persis_offset].ua_pending |= 7742 CTL_UA_REG_PREEMPT; 7743 } 7744 } 7745 } else { 7746 /* 7747 * Temporarily unregister so it won't get removed 7748 * or UA generated 7749 */ 7750 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7751 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7752 if (lun->per_res[i].registered == 0) 7753 continue; 7754 7755 if (memcmp(msg->pr.pr_info.sa_res_key, 7756 lun->per_res[i].res_key.key, 7757 sizeof(struct scsi_per_res_key)) == 0) { 7758 lun->per_res[i].registered = 0; 7759 memset(&lun->per_res[i].res_key, 0, 7760 sizeof(struct scsi_per_res_key)); 7761 lun->pr_key_count--; 7762 if (!persis_offset 7763 && i < CTL_MAX_INITIATORS) 7764 lun->pending_sense[i].ua_pending |= 7765 CTL_UA_REG_PREEMPT; 7766 else if (persis_offset 7767 && i >= persis_offset) 7768 lun->pending_sense[i - 7769 persis_offset].ua_pending |= 7770 CTL_UA_REG_PREEMPT; 7771 } else if (msg->pr.pr_info.res_type != lun->res_type 7772 && (lun->res_type == SPR_TYPE_WR_EX_RO 7773 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7774 if (!persis_offset 7775 && i < persis_offset) 7776 lun->pending_sense[i 7777 ].ua_pending |= 7778 CTL_UA_RES_RELEASE; 7779 else if (persis_offset 7780 && i >= persis_offset) 7781 lun->pending_sense[i - 7782 persis_offset].ua_pending |= 7783 CTL_UA_RES_RELEASE; 7784 } 7785 } 7786 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7787 lun->res_type = msg->pr.pr_info.res_type; 7788 if (lun->res_type != SPR_TYPE_WR_EX_AR 7789 && lun->res_type != SPR_TYPE_EX_AC_AR) 7790 lun->pr_res_idx = msg->pr.pr_info.residx; 7791 else 7792 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7793 } 7794 lun->PRGeneration++; 7795 7796} 7797 7798 7799int 7800ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7801{ 7802 int retval; 7803 int isc_retval; 7804 u_int32_t param_len; 7805 struct scsi_per_res_out *cdb; 7806 struct ctl_lun *lun; 7807 struct scsi_per_res_out_parms* param; 7808 struct ctl_softc *softc; 7809 uint32_t residx; 7810 uint64_t res_key, sa_res_key; 7811 uint8_t type; 7812 union ctl_ha_msg persis_io; 7813 int i; 7814 7815 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7816 7817 retval = CTL_RETVAL_COMPLETE; 7818 7819 softc = control_softc; 7820 7821 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7822 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7823 7824 /* 7825 * We only support whole-LUN scope. The scope & type are ignored for 7826 * register, register and ignore existing key and clear. 7827 * We sometimes ignore scope and type on preempts too!! 7828 * Verify reservation type here as well. 7829 */ 7830 type = cdb->scope_type & SPR_TYPE_MASK; 7831 if ((cdb->action == SPRO_RESERVE) 7832 || (cdb->action == SPRO_RELEASE)) { 7833 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7834 ctl_set_invalid_field(/*ctsio*/ ctsio, 7835 /*sks_valid*/ 1, 7836 /*command*/ 1, 7837 /*field*/ 2, 7838 /*bit_valid*/ 1, 7839 /*bit*/ 4); 7840 ctl_done((union ctl_io *)ctsio); 7841 return (CTL_RETVAL_COMPLETE); 7842 } 7843 7844 if (type>8 || type==2 || type==4 || type==0) { 7845 ctl_set_invalid_field(/*ctsio*/ ctsio, 7846 /*sks_valid*/ 1, 7847 /*command*/ 1, 7848 /*field*/ 2, 7849 /*bit_valid*/ 1, 7850 /*bit*/ 0); 7851 ctl_done((union ctl_io *)ctsio); 7852 return (CTL_RETVAL_COMPLETE); 7853 } 7854 } 7855 7856 switch (cdb->action & SPRO_ACTION_MASK) { 7857 case SPRO_REGISTER: 7858 case SPRO_RESERVE: 7859 case SPRO_RELEASE: 7860 case SPRO_CLEAR: 7861 case SPRO_PREEMPT: 7862 case SPRO_REG_IGNO: 7863 break; 7864 case SPRO_REG_MOVE: 7865 case SPRO_PRE_ABO: 7866 default: 7867 ctl_set_invalid_field(/*ctsio*/ ctsio, 7868 /*sks_valid*/ 1, 7869 /*command*/ 1, 7870 /*field*/ 1, 7871 /*bit_valid*/ 1, 7872 /*bit*/ 0); 7873 ctl_done((union ctl_io *)ctsio); 7874 return (CTL_RETVAL_COMPLETE); 7875 break; /* NOTREACHED */ 7876 } 7877 7878 param_len = scsi_4btoul(cdb->length); 7879 7880 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7881 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7882 ctsio->kern_data_len = param_len; 7883 ctsio->kern_total_len = param_len; 7884 ctsio->kern_data_resid = 0; 7885 ctsio->kern_rel_offset = 0; 7886 ctsio->kern_sg_entries = 0; 7887 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7888 ctsio->be_move_done = ctl_config_move_done; 7889 ctl_datamove((union ctl_io *)ctsio); 7890 7891 return (CTL_RETVAL_COMPLETE); 7892 } 7893 7894 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7895 7896 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7897 res_key = scsi_8btou64(param->res_key.key); 7898 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7899 7900 /* 7901 * Validate the reservation key here except for SPRO_REG_IGNO 7902 * This must be done for all other service actions 7903 */ 7904 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 7905 mtx_lock(&softc->ctl_lock); 7906 if (lun->per_res[residx].registered) { 7907 if (memcmp(param->res_key.key, 7908 lun->per_res[residx].res_key.key, 7909 ctl_min(sizeof(param->res_key), 7910 sizeof(lun->per_res[residx].res_key))) != 0) { 7911 /* 7912 * The current key passed in doesn't match 7913 * the one the initiator previously 7914 * registered. 7915 */ 7916 mtx_unlock(&softc->ctl_lock); 7917 free(ctsio->kern_data_ptr, M_CTL); 7918 ctl_set_reservation_conflict(ctsio); 7919 ctl_done((union ctl_io *)ctsio); 7920 return (CTL_RETVAL_COMPLETE); 7921 } 7922 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 7923 /* 7924 * We are not registered 7925 */ 7926 mtx_unlock(&softc->ctl_lock); 7927 free(ctsio->kern_data_ptr, M_CTL); 7928 ctl_set_reservation_conflict(ctsio); 7929 ctl_done((union ctl_io *)ctsio); 7930 return (CTL_RETVAL_COMPLETE); 7931 } else if (res_key != 0) { 7932 /* 7933 * We are not registered and trying to register but 7934 * the register key isn't zero. 7935 */ 7936 mtx_unlock(&softc->ctl_lock); 7937 free(ctsio->kern_data_ptr, M_CTL); 7938 ctl_set_reservation_conflict(ctsio); 7939 ctl_done((union ctl_io *)ctsio); 7940 return (CTL_RETVAL_COMPLETE); 7941 } 7942 mtx_unlock(&softc->ctl_lock); 7943 } 7944 7945 switch (cdb->action & SPRO_ACTION_MASK) { 7946 case SPRO_REGISTER: 7947 case SPRO_REG_IGNO: { 7948 7949#if 0 7950 printf("Registration received\n"); 7951#endif 7952 7953 /* 7954 * We don't support any of these options, as we report in 7955 * the read capabilities request (see 7956 * ctl_persistent_reserve_in(), above). 7957 */ 7958 if ((param->flags & SPR_SPEC_I_PT) 7959 || (param->flags & SPR_ALL_TG_PT) 7960 || (param->flags & SPR_APTPL)) { 7961 int bit_ptr; 7962 7963 if (param->flags & SPR_APTPL) 7964 bit_ptr = 0; 7965 else if (param->flags & SPR_ALL_TG_PT) 7966 bit_ptr = 2; 7967 else /* SPR_SPEC_I_PT */ 7968 bit_ptr = 3; 7969 7970 free(ctsio->kern_data_ptr, M_CTL); 7971 ctl_set_invalid_field(ctsio, 7972 /*sks_valid*/ 1, 7973 /*command*/ 0, 7974 /*field*/ 20, 7975 /*bit_valid*/ 1, 7976 /*bit*/ bit_ptr); 7977 ctl_done((union ctl_io *)ctsio); 7978 return (CTL_RETVAL_COMPLETE); 7979 } 7980 7981 mtx_lock(&softc->ctl_lock); 7982 7983 /* 7984 * The initiator wants to clear the 7985 * key/unregister. 7986 */ 7987 if (sa_res_key == 0) { 7988 if ((res_key == 0 7989 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 7990 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 7991 && !lun->per_res[residx].registered)) { 7992 mtx_unlock(&softc->ctl_lock); 7993 goto done; 7994 } 7995 7996 lun->per_res[residx].registered = 0; 7997 memset(&lun->per_res[residx].res_key, 7998 0, sizeof(lun->per_res[residx].res_key)); 7999 lun->pr_key_count--; 8000 8001 if (residx == lun->pr_res_idx) { 8002 lun->flags &= ~CTL_LUN_PR_RESERVED; 8003 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8004 8005 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8006 || lun->res_type == SPR_TYPE_EX_AC_RO) 8007 && lun->pr_key_count) { 8008 /* 8009 * If the reservation is a registrants 8010 * only type we need to generate a UA 8011 * for other registered inits. The 8012 * sense code should be RESERVATIONS 8013 * RELEASED 8014 */ 8015 8016 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8017 if (lun->per_res[ 8018 i+persis_offset].registered 8019 == 0) 8020 continue; 8021 lun->pending_sense[i 8022 ].ua_pending |= 8023 CTL_UA_RES_RELEASE; 8024 } 8025 } 8026 lun->res_type = 0; 8027 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8028 if (lun->pr_key_count==0) { 8029 lun->flags &= ~CTL_LUN_PR_RESERVED; 8030 lun->res_type = 0; 8031 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8032 } 8033 } 8034 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8035 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8036 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8037 persis_io.pr.pr_info.residx = residx; 8038 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8039 &persis_io, sizeof(persis_io), 0 )) > 8040 CTL_HA_STATUS_SUCCESS) { 8041 printf("CTL:Persis Out error returned from " 8042 "ctl_ha_msg_send %d\n", isc_retval); 8043 } 8044 mtx_unlock(&softc->ctl_lock); 8045 } else /* sa_res_key != 0 */ { 8046 8047 /* 8048 * If we aren't registered currently then increment 8049 * the key count and set the registered flag. 8050 */ 8051 if (!lun->per_res[residx].registered) { 8052 lun->pr_key_count++; 8053 lun->per_res[residx].registered = 1; 8054 } 8055 8056 memcpy(&lun->per_res[residx].res_key, 8057 param->serv_act_res_key, 8058 ctl_min(sizeof(param->serv_act_res_key), 8059 sizeof(lun->per_res[residx].res_key))); 8060 8061 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8062 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8063 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8064 persis_io.pr.pr_info.residx = residx; 8065 memcpy(persis_io.pr.pr_info.sa_res_key, 8066 param->serv_act_res_key, 8067 sizeof(param->serv_act_res_key)); 8068 mtx_unlock(&softc->ctl_lock); 8069 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8070 &persis_io, sizeof(persis_io), 0)) > 8071 CTL_HA_STATUS_SUCCESS) { 8072 printf("CTL:Persis Out error returned from " 8073 "ctl_ha_msg_send %d\n", isc_retval); 8074 } 8075 } 8076 lun->PRGeneration++; 8077 8078 break; 8079 } 8080 case SPRO_RESERVE: 8081#if 0 8082 printf("Reserve executed type %d\n", type); 8083#endif 8084 mtx_lock(&softc->ctl_lock); 8085 if (lun->flags & CTL_LUN_PR_RESERVED) { 8086 /* 8087 * if this isn't the reservation holder and it's 8088 * not a "all registrants" type or if the type is 8089 * different then we have a conflict 8090 */ 8091 if ((lun->pr_res_idx != residx 8092 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8093 || lun->res_type != type) { 8094 mtx_unlock(&softc->ctl_lock); 8095 free(ctsio->kern_data_ptr, M_CTL); 8096 ctl_set_reservation_conflict(ctsio); 8097 ctl_done((union ctl_io *)ctsio); 8098 return (CTL_RETVAL_COMPLETE); 8099 } 8100 mtx_unlock(&softc->ctl_lock); 8101 } else /* create a reservation */ { 8102 /* 8103 * If it's not an "all registrants" type record 8104 * reservation holder 8105 */ 8106 if (type != SPR_TYPE_WR_EX_AR 8107 && type != SPR_TYPE_EX_AC_AR) 8108 lun->pr_res_idx = residx; /* Res holder */ 8109 else 8110 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8111 8112 lun->flags |= CTL_LUN_PR_RESERVED; 8113 lun->res_type = type; 8114 8115 mtx_unlock(&softc->ctl_lock); 8116 8117 /* send msg to other side */ 8118 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8119 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8120 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8121 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8122 persis_io.pr.pr_info.res_type = type; 8123 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8124 &persis_io, sizeof(persis_io), 0)) > 8125 CTL_HA_STATUS_SUCCESS) { 8126 printf("CTL:Persis Out error returned from " 8127 "ctl_ha_msg_send %d\n", isc_retval); 8128 } 8129 } 8130 break; 8131 8132 case SPRO_RELEASE: 8133 mtx_lock(&softc->ctl_lock); 8134 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8135 /* No reservation exists return good status */ 8136 mtx_unlock(&softc->ctl_lock); 8137 goto done; 8138 } 8139 /* 8140 * Is this nexus a reservation holder? 8141 */ 8142 if (lun->pr_res_idx != residx 8143 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8144 /* 8145 * not a res holder return good status but 8146 * do nothing 8147 */ 8148 mtx_unlock(&softc->ctl_lock); 8149 goto done; 8150 } 8151 8152 if (lun->res_type != type) { 8153 mtx_unlock(&softc->ctl_lock); 8154 free(ctsio->kern_data_ptr, M_CTL); 8155 ctl_set_illegal_pr_release(ctsio); 8156 ctl_done((union ctl_io *)ctsio); 8157 return (CTL_RETVAL_COMPLETE); 8158 } 8159 8160 /* okay to release */ 8161 lun->flags &= ~CTL_LUN_PR_RESERVED; 8162 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8163 lun->res_type = 0; 8164 8165 /* 8166 * if this isn't an exclusive access 8167 * res generate UA for all other 8168 * registrants. 8169 */ 8170 if (type != SPR_TYPE_EX_AC 8171 && type != SPR_TYPE_WR_EX) { 8172 /* 8173 * temporarily unregister so we don't generate UA 8174 */ 8175 lun->per_res[residx].registered = 0; 8176 8177 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8178 if (lun->per_res[i+persis_offset].registered 8179 == 0) 8180 continue; 8181 lun->pending_sense[i].ua_pending |= 8182 CTL_UA_RES_RELEASE; 8183 } 8184 8185 lun->per_res[residx].registered = 1; 8186 } 8187 mtx_unlock(&softc->ctl_lock); 8188 /* Send msg to other side */ 8189 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8190 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8191 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8192 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8193 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8194 printf("CTL:Persis Out error returned from " 8195 "ctl_ha_msg_send %d\n", isc_retval); 8196 } 8197 break; 8198 8199 case SPRO_CLEAR: 8200 /* send msg to other side */ 8201 8202 mtx_lock(&softc->ctl_lock); 8203 lun->flags &= ~CTL_LUN_PR_RESERVED; 8204 lun->res_type = 0; 8205 lun->pr_key_count = 0; 8206 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8207 8208 8209 memset(&lun->per_res[residx].res_key, 8210 0, sizeof(lun->per_res[residx].res_key)); 8211 lun->per_res[residx].registered = 0; 8212 8213 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8214 if (lun->per_res[i].registered) { 8215 if (!persis_offset && i < CTL_MAX_INITIATORS) 8216 lun->pending_sense[i].ua_pending |= 8217 CTL_UA_RES_PREEMPT; 8218 else if (persis_offset && i >= persis_offset) 8219 lun->pending_sense[i-persis_offset 8220 ].ua_pending |= CTL_UA_RES_PREEMPT; 8221 8222 memset(&lun->per_res[i].res_key, 8223 0, sizeof(struct scsi_per_res_key)); 8224 lun->per_res[i].registered = 0; 8225 } 8226 lun->PRGeneration++; 8227 mtx_unlock(&softc->ctl_lock); 8228 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8229 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8230 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8231 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8232 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8233 printf("CTL:Persis Out error returned from " 8234 "ctl_ha_msg_send %d\n", isc_retval); 8235 } 8236 break; 8237 8238 case SPRO_PREEMPT: { 8239 int nretval; 8240 8241 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8242 residx, ctsio, cdb, param); 8243 if (nretval != 0) 8244 return (CTL_RETVAL_COMPLETE); 8245 break; 8246 } 8247 case SPRO_REG_MOVE: 8248 case SPRO_PRE_ABO: 8249 default: 8250 free(ctsio->kern_data_ptr, M_CTL); 8251 ctl_set_invalid_field(/*ctsio*/ ctsio, 8252 /*sks_valid*/ 1, 8253 /*command*/ 1, 8254 /*field*/ 1, 8255 /*bit_valid*/ 1, 8256 /*bit*/ 0); 8257 ctl_done((union ctl_io *)ctsio); 8258 return (CTL_RETVAL_COMPLETE); 8259 break; /* NOTREACHED */ 8260 } 8261 8262done: 8263 free(ctsio->kern_data_ptr, M_CTL); 8264 ctl_set_success(ctsio); 8265 ctl_done((union ctl_io *)ctsio); 8266 8267 return (retval); 8268} 8269 8270/* 8271 * This routine is for handling a message from the other SC pertaining to 8272 * persistent reserve out. All the error checking will have been done 8273 * so only perorming the action need be done here to keep the two 8274 * in sync. 8275 */ 8276static void 8277ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8278{ 8279 struct ctl_lun *lun; 8280 struct ctl_softc *softc; 8281 int i; 8282 uint32_t targ_lun; 8283 8284 softc = control_softc; 8285 8286 mtx_lock(&softc->ctl_lock); 8287 8288 targ_lun = msg->hdr.nexus.targ_lun; 8289 if (msg->hdr.nexus.lun_map_fn != NULL) 8290 targ_lun = msg->hdr.nexus.lun_map_fn(msg->hdr.nexus.lun_map_arg, targ_lun); 8291 lun = softc->ctl_luns[targ_lun]; 8292 switch(msg->pr.pr_info.action) { 8293 case CTL_PR_REG_KEY: 8294 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8295 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8296 lun->pr_key_count++; 8297 } 8298 lun->PRGeneration++; 8299 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8300 msg->pr.pr_info.sa_res_key, 8301 sizeof(struct scsi_per_res_key)); 8302 break; 8303 8304 case CTL_PR_UNREG_KEY: 8305 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8306 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8307 0, sizeof(struct scsi_per_res_key)); 8308 lun->pr_key_count--; 8309 8310 /* XXX Need to see if the reservation has been released */ 8311 /* if so do we need to generate UA? */ 8312 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8313 lun->flags &= ~CTL_LUN_PR_RESERVED; 8314 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8315 8316 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8317 || lun->res_type == SPR_TYPE_EX_AC_RO) 8318 && lun->pr_key_count) { 8319 /* 8320 * If the reservation is a registrants 8321 * only type we need to generate a UA 8322 * for other registered inits. The 8323 * sense code should be RESERVATIONS 8324 * RELEASED 8325 */ 8326 8327 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8328 if (lun->per_res[i+ 8329 persis_offset].registered == 0) 8330 continue; 8331 8332 lun->pending_sense[i 8333 ].ua_pending |= 8334 CTL_UA_RES_RELEASE; 8335 } 8336 } 8337 lun->res_type = 0; 8338 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8339 if (lun->pr_key_count==0) { 8340 lun->flags &= ~CTL_LUN_PR_RESERVED; 8341 lun->res_type = 0; 8342 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8343 } 8344 } 8345 lun->PRGeneration++; 8346 break; 8347 8348 case CTL_PR_RESERVE: 8349 lun->flags |= CTL_LUN_PR_RESERVED; 8350 lun->res_type = msg->pr.pr_info.res_type; 8351 lun->pr_res_idx = msg->pr.pr_info.residx; 8352 8353 break; 8354 8355 case CTL_PR_RELEASE: 8356 /* 8357 * if this isn't an exclusive access res generate UA for all 8358 * other registrants. 8359 */ 8360 if (lun->res_type != SPR_TYPE_EX_AC 8361 && lun->res_type != SPR_TYPE_WR_EX) { 8362 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8363 if (lun->per_res[i+persis_offset].registered) 8364 lun->pending_sense[i].ua_pending |= 8365 CTL_UA_RES_RELEASE; 8366 } 8367 8368 lun->flags &= ~CTL_LUN_PR_RESERVED; 8369 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8370 lun->res_type = 0; 8371 break; 8372 8373 case CTL_PR_PREEMPT: 8374 ctl_pro_preempt_other(lun, msg); 8375 break; 8376 case CTL_PR_CLEAR: 8377 lun->flags &= ~CTL_LUN_PR_RESERVED; 8378 lun->res_type = 0; 8379 lun->pr_key_count = 0; 8380 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8381 8382 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8383 if (lun->per_res[i].registered == 0) 8384 continue; 8385 if (!persis_offset 8386 && i < CTL_MAX_INITIATORS) 8387 lun->pending_sense[i].ua_pending |= 8388 CTL_UA_RES_PREEMPT; 8389 else if (persis_offset 8390 && i >= persis_offset) 8391 lun->pending_sense[i-persis_offset].ua_pending|= 8392 CTL_UA_RES_PREEMPT; 8393 memset(&lun->per_res[i].res_key, 0, 8394 sizeof(struct scsi_per_res_key)); 8395 lun->per_res[i].registered = 0; 8396 } 8397 lun->PRGeneration++; 8398 break; 8399 } 8400 8401 mtx_unlock(&softc->ctl_lock); 8402} 8403 8404int 8405ctl_read_write(struct ctl_scsiio *ctsio) 8406{ 8407 struct ctl_lun *lun; 8408 struct ctl_lba_len lbalen; 8409 uint64_t lba; 8410 uint32_t num_blocks; 8411 int reladdr, fua, dpo, ebp; 8412 int retval; 8413 int isread; 8414 8415 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8416 8417 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8418 8419 reladdr = 0; 8420 fua = 0; 8421 dpo = 0; 8422 ebp = 0; 8423 8424 retval = CTL_RETVAL_COMPLETE; 8425 8426 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8427 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8428 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8429 uint32_t residx; 8430 8431 /* 8432 * XXX KDM need a lock here. 8433 */ 8434 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8435 if ((lun->res_type == SPR_TYPE_EX_AC 8436 && residx != lun->pr_res_idx) 8437 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8438 || lun->res_type == SPR_TYPE_EX_AC_AR) 8439 && !lun->per_res[residx].registered)) { 8440 ctl_set_reservation_conflict(ctsio); 8441 ctl_done((union ctl_io *)ctsio); 8442 return (CTL_RETVAL_COMPLETE); 8443 } 8444 } 8445 8446 switch (ctsio->cdb[0]) { 8447 case READ_6: 8448 case WRITE_6: { 8449 struct scsi_rw_6 *cdb; 8450 8451 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8452 8453 lba = scsi_3btoul(cdb->addr); 8454 /* only 5 bits are valid in the most significant address byte */ 8455 lba &= 0x1fffff; 8456 num_blocks = cdb->length; 8457 /* 8458 * This is correct according to SBC-2. 8459 */ 8460 if (num_blocks == 0) 8461 num_blocks = 256; 8462 break; 8463 } 8464 case READ_10: 8465 case WRITE_10: { 8466 struct scsi_rw_10 *cdb; 8467 8468 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8469 8470 if (cdb->byte2 & SRW10_RELADDR) 8471 reladdr = 1; 8472 if (cdb->byte2 & SRW10_FUA) 8473 fua = 1; 8474 if (cdb->byte2 & SRW10_DPO) 8475 dpo = 1; 8476 8477 if ((cdb->opcode == WRITE_10) 8478 && (cdb->byte2 & SRW10_EBP)) 8479 ebp = 1; 8480 8481 lba = scsi_4btoul(cdb->addr); 8482 num_blocks = scsi_2btoul(cdb->length); 8483 break; 8484 } 8485 case WRITE_VERIFY_10: { 8486 struct scsi_write_verify_10 *cdb; 8487 8488 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8489 8490 /* 8491 * XXX KDM we should do actual write verify support at some 8492 * point. This is obviously fake, we're just translating 8493 * things to a write. So we don't even bother checking the 8494 * BYTCHK field, since we don't do any verification. If 8495 * the user asks for it, we'll just pretend we did it. 8496 */ 8497 if (cdb->byte2 & SWV_DPO) 8498 dpo = 1; 8499 8500 lba = scsi_4btoul(cdb->addr); 8501 num_blocks = scsi_2btoul(cdb->length); 8502 break; 8503 } 8504 case READ_12: 8505 case WRITE_12: { 8506 struct scsi_rw_12 *cdb; 8507 8508 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8509 8510 if (cdb->byte2 & SRW12_RELADDR) 8511 reladdr = 1; 8512 if (cdb->byte2 & SRW12_FUA) 8513 fua = 1; 8514 if (cdb->byte2 & SRW12_DPO) 8515 dpo = 1; 8516 lba = scsi_4btoul(cdb->addr); 8517 num_blocks = scsi_4btoul(cdb->length); 8518 break; 8519 } 8520 case WRITE_VERIFY_12: { 8521 struct scsi_write_verify_12 *cdb; 8522 8523 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8524 8525 if (cdb->byte2 & SWV_DPO) 8526 dpo = 1; 8527 8528 lba = scsi_4btoul(cdb->addr); 8529 num_blocks = scsi_4btoul(cdb->length); 8530 8531 break; 8532 } 8533 case READ_16: 8534 case WRITE_16: { 8535 struct scsi_rw_16 *cdb; 8536 8537 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8538 8539 if (cdb->byte2 & SRW12_RELADDR) 8540 reladdr = 1; 8541 if (cdb->byte2 & SRW12_FUA) 8542 fua = 1; 8543 if (cdb->byte2 & SRW12_DPO) 8544 dpo = 1; 8545 8546 lba = scsi_8btou64(cdb->addr); 8547 num_blocks = scsi_4btoul(cdb->length); 8548 break; 8549 } 8550 case WRITE_VERIFY_16: { 8551 struct scsi_write_verify_16 *cdb; 8552 8553 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8554 8555 if (cdb->byte2 & SWV_DPO) 8556 dpo = 1; 8557 8558 lba = scsi_8btou64(cdb->addr); 8559 num_blocks = scsi_4btoul(cdb->length); 8560 break; 8561 } 8562 default: 8563 /* 8564 * We got a command we don't support. This shouldn't 8565 * happen, commands should be filtered out above us. 8566 */ 8567 ctl_set_invalid_opcode(ctsio); 8568 ctl_done((union ctl_io *)ctsio); 8569 8570 return (CTL_RETVAL_COMPLETE); 8571 break; /* NOTREACHED */ 8572 } 8573 8574 /* 8575 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8576 * interesting for us, but if RAIDCore is in write-back mode, 8577 * getting it to do write-through for a particular transaction may 8578 * not be possible. 8579 */ 8580 /* 8581 * We don't support relative addressing. That also requires 8582 * supporting linked commands, which we don't do. 8583 */ 8584 if (reladdr != 0) { 8585 ctl_set_invalid_field(ctsio, 8586 /*sks_valid*/ 1, 8587 /*command*/ 1, 8588 /*field*/ 1, 8589 /*bit_valid*/ 1, 8590 /*bit*/ 0); 8591 ctl_done((union ctl_io *)ctsio); 8592 return (CTL_RETVAL_COMPLETE); 8593 } 8594 8595 /* 8596 * The first check is to make sure we're in bounds, the second 8597 * check is to catch wrap-around problems. If the lba + num blocks 8598 * is less than the lba, then we've wrapped around and the block 8599 * range is invalid anyway. 8600 */ 8601 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8602 || ((lba + num_blocks) < lba)) { 8603 ctl_set_lba_out_of_range(ctsio); 8604 ctl_done((union ctl_io *)ctsio); 8605 return (CTL_RETVAL_COMPLETE); 8606 } 8607 8608 /* 8609 * According to SBC-3, a transfer length of 0 is not an error. 8610 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8611 * translates to 256 blocks for those commands. 8612 */ 8613 if (num_blocks == 0) { 8614 ctl_set_success(ctsio); 8615 ctl_done((union ctl_io *)ctsio); 8616 return (CTL_RETVAL_COMPLETE); 8617 } 8618 8619 lbalen.lba = lba; 8620 lbalen.len = num_blocks; 8621 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8622 sizeof(lbalen)); 8623 8624 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8625 8626 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8627 8628 return (retval); 8629} 8630 8631int 8632ctl_report_luns(struct ctl_scsiio *ctsio) 8633{ 8634 struct scsi_report_luns *cdb; 8635 struct scsi_report_luns_data *lun_data; 8636 struct ctl_lun *lun, *request_lun; 8637 int num_luns, retval; 8638 uint32_t alloc_len, lun_datalen; 8639 int num_filled, well_known; 8640 uint32_t initidx, targ_lun_id, lun_id; 8641 8642 retval = CTL_RETVAL_COMPLETE; 8643 well_known = 0; 8644 8645 cdb = (struct scsi_report_luns *)ctsio->cdb; 8646 8647 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8648 8649 mtx_lock(&control_softc->ctl_lock); 8650 num_luns = control_softc->num_luns; 8651 mtx_unlock(&control_softc->ctl_lock); 8652 8653 switch (cdb->select_report) { 8654 case RPL_REPORT_DEFAULT: 8655 case RPL_REPORT_ALL: 8656 break; 8657 case RPL_REPORT_WELLKNOWN: 8658 well_known = 1; 8659 num_luns = 0; 8660 break; 8661 default: 8662 ctl_set_invalid_field(ctsio, 8663 /*sks_valid*/ 1, 8664 /*command*/ 1, 8665 /*field*/ 2, 8666 /*bit_valid*/ 0, 8667 /*bit*/ 0); 8668 ctl_done((union ctl_io *)ctsio); 8669 return (retval); 8670 break; /* NOTREACHED */ 8671 } 8672 8673 alloc_len = scsi_4btoul(cdb->length); 8674 /* 8675 * The initiator has to allocate at least 16 bytes for this request, 8676 * so he can at least get the header and the first LUN. Otherwise 8677 * we reject the request (per SPC-3 rev 14, section 6.21). 8678 */ 8679 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8680 sizeof(struct scsi_report_luns_lundata))) { 8681 ctl_set_invalid_field(ctsio, 8682 /*sks_valid*/ 1, 8683 /*command*/ 1, 8684 /*field*/ 6, 8685 /*bit_valid*/ 0, 8686 /*bit*/ 0); 8687 ctl_done((union ctl_io *)ctsio); 8688 return (retval); 8689 } 8690 8691 request_lun = (struct ctl_lun *) 8692 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8693 8694 lun_datalen = sizeof(*lun_data) + 8695 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8696 8697 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 8698 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8699 ctsio->kern_sg_entries = 0; 8700 8701 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8702 8703 mtx_lock(&control_softc->ctl_lock); 8704 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 8705 lun_id = targ_lun_id; 8706 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 8707 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 8708 if (lun_id >= CTL_MAX_LUNS) 8709 continue; 8710 lun = control_softc->ctl_luns[lun_id]; 8711 if (lun == NULL) 8712 continue; 8713 8714 if (targ_lun_id <= 0xff) { 8715 /* 8716 * Peripheral addressing method, bus number 0. 8717 */ 8718 lun_data->luns[num_filled].lundata[0] = 8719 RPL_LUNDATA_ATYP_PERIPH; 8720 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 8721 num_filled++; 8722 } else if (targ_lun_id <= 0x3fff) { 8723 /* 8724 * Flat addressing method. 8725 */ 8726 lun_data->luns[num_filled].lundata[0] = 8727 RPL_LUNDATA_ATYP_FLAT | 8728 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 8729#ifdef OLDCTLHEADERS 8730 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8731 (targ_lun_id & SRLD_BUS_LUN_MASK); 8732#endif 8733 lun_data->luns[num_filled].lundata[1] = 8734#ifdef OLDCTLHEADERS 8735 targ_lun_id >> SRLD_BUS_LUN_BITS; 8736#endif 8737 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 8738 num_filled++; 8739 } else { 8740 printf("ctl_report_luns: bogus LUN number %jd, " 8741 "skipping\n", (intmax_t)targ_lun_id); 8742 } 8743 /* 8744 * According to SPC-3, rev 14 section 6.21: 8745 * 8746 * "The execution of a REPORT LUNS command to any valid and 8747 * installed logical unit shall clear the REPORTED LUNS DATA 8748 * HAS CHANGED unit attention condition for all logical 8749 * units of that target with respect to the requesting 8750 * initiator. A valid and installed logical unit is one 8751 * having a PERIPHERAL QUALIFIER of 000b in the standard 8752 * INQUIRY data (see 6.4.2)." 8753 * 8754 * If request_lun is NULL, the LUN this report luns command 8755 * was issued to is either disabled or doesn't exist. In that 8756 * case, we shouldn't clear any pending lun change unit 8757 * attention. 8758 */ 8759 if (request_lun != NULL) 8760 lun->pending_sense[initidx].ua_pending &= 8761 ~CTL_UA_LUN_CHANGE; 8762 } 8763 mtx_unlock(&control_softc->ctl_lock); 8764 8765 /* 8766 * It's quite possible that we've returned fewer LUNs than we allocated 8767 * space for. Trim it. 8768 */ 8769 lun_datalen = sizeof(*lun_data) + 8770 (num_filled * sizeof(struct scsi_report_luns_lundata)); 8771 8772 if (lun_datalen < alloc_len) { 8773 ctsio->residual = alloc_len - lun_datalen; 8774 ctsio->kern_data_len = lun_datalen; 8775 ctsio->kern_total_len = lun_datalen; 8776 } else { 8777 ctsio->residual = 0; 8778 ctsio->kern_data_len = alloc_len; 8779 ctsio->kern_total_len = alloc_len; 8780 } 8781 ctsio->kern_data_resid = 0; 8782 ctsio->kern_rel_offset = 0; 8783 ctsio->kern_sg_entries = 0; 8784 8785 /* 8786 * We set this to the actual data length, regardless of how much 8787 * space we actually have to return results. If the user looks at 8788 * this value, he'll know whether or not he allocated enough space 8789 * and reissue the command if necessary. We don't support well 8790 * known logical units, so if the user asks for that, return none. 8791 */ 8792 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8793 8794 /* 8795 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8796 * this request. 8797 */ 8798 ctsio->scsi_status = SCSI_STATUS_OK; 8799 8800 ctsio->be_move_done = ctl_config_move_done; 8801 ctl_datamove((union ctl_io *)ctsio); 8802 8803 return (retval); 8804} 8805 8806int 8807ctl_request_sense(struct ctl_scsiio *ctsio) 8808{ 8809 struct scsi_request_sense *cdb; 8810 struct scsi_sense_data *sense_ptr; 8811 struct ctl_lun *lun; 8812 uint32_t initidx; 8813 int have_error; 8814 scsi_sense_data_type sense_format; 8815 8816 cdb = (struct scsi_request_sense *)ctsio->cdb; 8817 8818 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8819 8820 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 8821 8822 /* 8823 * Determine which sense format the user wants. 8824 */ 8825 if (cdb->byte2 & SRS_DESC) 8826 sense_format = SSD_TYPE_DESC; 8827 else 8828 sense_format = SSD_TYPE_FIXED; 8829 8830 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 8831 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 8832 ctsio->kern_sg_entries = 0; 8833 8834 /* 8835 * struct scsi_sense_data, which is currently set to 256 bytes, is 8836 * larger than the largest allowed value for the length field in the 8837 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 8838 */ 8839 ctsio->residual = 0; 8840 ctsio->kern_data_len = cdb->length; 8841 ctsio->kern_total_len = cdb->length; 8842 8843 ctsio->kern_data_resid = 0; 8844 ctsio->kern_rel_offset = 0; 8845 ctsio->kern_sg_entries = 0; 8846 8847 /* 8848 * If we don't have a LUN, we don't have any pending sense. 8849 */ 8850 if (lun == NULL) 8851 goto no_sense; 8852 8853 have_error = 0; 8854 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8855 /* 8856 * Check for pending sense, and then for pending unit attentions. 8857 * Pending sense gets returned first, then pending unit attentions. 8858 */ 8859 mtx_lock(&lun->ctl_softc->ctl_lock); 8860 if (ctl_is_set(lun->have_ca, initidx)) { 8861 scsi_sense_data_type stored_format; 8862 8863 /* 8864 * Check to see which sense format was used for the stored 8865 * sense data. 8866 */ 8867 stored_format = scsi_sense_type( 8868 &lun->pending_sense[initidx].sense); 8869 8870 /* 8871 * If the user requested a different sense format than the 8872 * one we stored, then we need to convert it to the other 8873 * format. If we're going from descriptor to fixed format 8874 * sense data, we may lose things in translation, depending 8875 * on what options were used. 8876 * 8877 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 8878 * for some reason we'll just copy it out as-is. 8879 */ 8880 if ((stored_format == SSD_TYPE_FIXED) 8881 && (sense_format == SSD_TYPE_DESC)) 8882 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 8883 &lun->pending_sense[initidx].sense, 8884 (struct scsi_sense_data_desc *)sense_ptr); 8885 else if ((stored_format == SSD_TYPE_DESC) 8886 && (sense_format == SSD_TYPE_FIXED)) 8887 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 8888 &lun->pending_sense[initidx].sense, 8889 (struct scsi_sense_data_fixed *)sense_ptr); 8890 else 8891 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 8892 ctl_min(sizeof(*sense_ptr), 8893 sizeof(lun->pending_sense[initidx].sense))); 8894 8895 ctl_clear_mask(lun->have_ca, initidx); 8896 have_error = 1; 8897 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 8898 ctl_ua_type ua_type; 8899 8900 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 8901 sense_ptr, sense_format); 8902 if (ua_type != CTL_UA_NONE) { 8903 have_error = 1; 8904 /* We're reporting this UA, so clear it */ 8905 lun->pending_sense[initidx].ua_pending &= ~ua_type; 8906 } 8907 } 8908 mtx_unlock(&lun->ctl_softc->ctl_lock); 8909 8910 /* 8911 * We already have a pending error, return it. 8912 */ 8913 if (have_error != 0) { 8914 /* 8915 * We report the SCSI status as OK, since the status of the 8916 * request sense command itself is OK. 8917 */ 8918 ctsio->scsi_status = SCSI_STATUS_OK; 8919 8920 /* 8921 * We report 0 for the sense length, because we aren't doing 8922 * autosense in this case. We're reporting sense as 8923 * parameter data. 8924 */ 8925 ctsio->sense_len = 0; 8926 8927 ctsio->be_move_done = ctl_config_move_done; 8928 ctl_datamove((union ctl_io *)ctsio); 8929 8930 return (CTL_RETVAL_COMPLETE); 8931 } 8932 8933no_sense: 8934 8935 /* 8936 * No sense information to report, so we report that everything is 8937 * okay. 8938 */ 8939 ctl_set_sense_data(sense_ptr, 8940 lun, 8941 sense_format, 8942 /*current_error*/ 1, 8943 /*sense_key*/ SSD_KEY_NO_SENSE, 8944 /*asc*/ 0x00, 8945 /*ascq*/ 0x00, 8946 SSD_ELEM_NONE); 8947 8948 ctsio->scsi_status = SCSI_STATUS_OK; 8949 8950 /* 8951 * We report 0 for the sense length, because we aren't doing 8952 * autosense in this case. We're reporting sense as parameter data. 8953 */ 8954 ctsio->sense_len = 0; 8955 ctsio->be_move_done = ctl_config_move_done; 8956 ctl_datamove((union ctl_io *)ctsio); 8957 8958 return (CTL_RETVAL_COMPLETE); 8959} 8960 8961int 8962ctl_tur(struct ctl_scsiio *ctsio) 8963{ 8964 struct ctl_lun *lun; 8965 8966 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8967 8968 CTL_DEBUG_PRINT(("ctl_tur\n")); 8969 8970 if (lun == NULL) 8971 return (-EINVAL); 8972 8973 ctsio->scsi_status = SCSI_STATUS_OK; 8974 ctsio->io_hdr.status = CTL_SUCCESS; 8975 8976 ctl_done((union ctl_io *)ctsio); 8977 8978 return (CTL_RETVAL_COMPLETE); 8979} 8980 8981#ifdef notyet 8982static int 8983ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 8984{ 8985 8986} 8987#endif 8988 8989static int 8990ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 8991{ 8992 struct scsi_vpd_supported_pages *pages; 8993 int sup_page_size; 8994 struct ctl_lun *lun; 8995 8996 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8997 8998 sup_page_size = sizeof(struct scsi_vpd_supported_pages) + 8999 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9000 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9001 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9002 ctsio->kern_sg_entries = 0; 9003 9004 if (sup_page_size < alloc_len) { 9005 ctsio->residual = alloc_len - sup_page_size; 9006 ctsio->kern_data_len = sup_page_size; 9007 ctsio->kern_total_len = sup_page_size; 9008 } else { 9009 ctsio->residual = 0; 9010 ctsio->kern_data_len = alloc_len; 9011 ctsio->kern_total_len = alloc_len; 9012 } 9013 ctsio->kern_data_resid = 0; 9014 ctsio->kern_rel_offset = 0; 9015 ctsio->kern_sg_entries = 0; 9016 9017 /* 9018 * The control device is always connected. The disk device, on the 9019 * other hand, may not be online all the time. Need to change this 9020 * to figure out whether the disk device is actually online or not. 9021 */ 9022 if (lun != NULL) 9023 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9024 lun->be_lun->lun_type; 9025 else 9026 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9027 9028 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9029 /* Supported VPD pages */ 9030 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9031 /* Serial Number */ 9032 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9033 /* Device Identification */ 9034 pages->page_list[2] = SVPD_DEVICE_ID; 9035 9036 ctsio->scsi_status = SCSI_STATUS_OK; 9037 9038 ctsio->be_move_done = ctl_config_move_done; 9039 ctl_datamove((union ctl_io *)ctsio); 9040 9041 return (CTL_RETVAL_COMPLETE); 9042} 9043 9044static int 9045ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9046{ 9047 struct scsi_vpd_unit_serial_number *sn_ptr; 9048 struct ctl_lun *lun; 9049#ifndef CTL_USE_BACKEND_SN 9050 char tmpstr[32]; 9051#endif 9052 9053 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9054 9055 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9056 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9057 ctsio->kern_sg_entries = 0; 9058 9059 if (sizeof(*sn_ptr) < alloc_len) { 9060 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9061 ctsio->kern_data_len = sizeof(*sn_ptr); 9062 ctsio->kern_total_len = sizeof(*sn_ptr); 9063 } else { 9064 ctsio->residual = 0; 9065 ctsio->kern_data_len = alloc_len; 9066 ctsio->kern_total_len = alloc_len; 9067 } 9068 ctsio->kern_data_resid = 0; 9069 ctsio->kern_rel_offset = 0; 9070 ctsio->kern_sg_entries = 0; 9071 9072 /* 9073 * The control device is always connected. The disk device, on the 9074 * other hand, may not be online all the time. Need to change this 9075 * to figure out whether the disk device is actually online or not. 9076 */ 9077 if (lun != NULL) 9078 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9079 lun->be_lun->lun_type; 9080 else 9081 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9082 9083 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9084 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9085#ifdef CTL_USE_BACKEND_SN 9086 /* 9087 * If we don't have a LUN, we just leave the serial number as 9088 * all spaces. 9089 */ 9090 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9091 if (lun != NULL) { 9092 strncpy((char *)sn_ptr->serial_num, 9093 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9094 } 9095#else 9096 /* 9097 * Note that we're using a non-unique serial number here, 9098 */ 9099 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9100 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9101 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9102 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9103#endif 9104 ctsio->scsi_status = SCSI_STATUS_OK; 9105 9106 ctsio->be_move_done = ctl_config_move_done; 9107 ctl_datamove((union ctl_io *)ctsio); 9108 9109 return (CTL_RETVAL_COMPLETE); 9110} 9111 9112 9113static int 9114ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9115{ 9116 struct scsi_vpd_device_id *devid_ptr; 9117 struct scsi_vpd_id_descriptor *desc, *desc1; 9118 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9119 struct scsi_vpd_id_t10 *t10id; 9120 struct ctl_softc *ctl_softc; 9121 struct ctl_lun *lun; 9122 struct ctl_frontend *fe; 9123#ifndef CTL_USE_BACKEND_SN 9124 char tmpstr[32]; 9125#endif /* CTL_USE_BACKEND_SN */ 9126 int devid_len; 9127 9128 ctl_softc = control_softc; 9129 9130 mtx_lock(&ctl_softc->ctl_lock); 9131 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9132 mtx_unlock(&ctl_softc->ctl_lock); 9133 9134 if (fe->devid != NULL) 9135 return ((fe->devid)(ctsio, alloc_len)); 9136 9137 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9138 9139 devid_len = sizeof(struct scsi_vpd_device_id) + 9140 sizeof(struct scsi_vpd_id_descriptor) + 9141 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9142 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9143 sizeof(struct scsi_vpd_id_descriptor) + 9144 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9145 sizeof(struct scsi_vpd_id_descriptor) + 9146 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9147 9148 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 9149 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9150 ctsio->kern_sg_entries = 0; 9151 9152 if (devid_len < alloc_len) { 9153 ctsio->residual = alloc_len - devid_len; 9154 ctsio->kern_data_len = devid_len; 9155 ctsio->kern_total_len = devid_len; 9156 } else { 9157 ctsio->residual = 0; 9158 ctsio->kern_data_len = alloc_len; 9159 ctsio->kern_total_len = alloc_len; 9160 } 9161 ctsio->kern_data_resid = 0; 9162 ctsio->kern_rel_offset = 0; 9163 ctsio->kern_sg_entries = 0; 9164 9165 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9166 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9167 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9168 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9169 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9170 CTL_WWPN_LEN); 9171 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9172 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9173 9174 /* 9175 * The control device is always connected. The disk device, on the 9176 * other hand, may not be online all the time. 9177 */ 9178 if (lun != NULL) 9179 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9180 lun->be_lun->lun_type; 9181 else 9182 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9183 9184 devid_ptr->page_code = SVPD_DEVICE_ID; 9185 9186 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9187 9188 mtx_lock(&ctl_softc->ctl_lock); 9189 9190 /* 9191 * For Fibre channel, 9192 */ 9193 if (fe->port_type == CTL_PORT_FC) 9194 { 9195 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9196 SVPD_ID_CODESET_ASCII; 9197 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9198 SVPD_ID_CODESET_BINARY; 9199 } 9200 else 9201 { 9202 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9203 SVPD_ID_CODESET_ASCII; 9204 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9205 SVPD_ID_CODESET_BINARY; 9206 } 9207 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9208 mtx_unlock(&ctl_softc->ctl_lock); 9209 9210 /* 9211 * We're using a LUN association here. i.e., this device ID is a 9212 * per-LUN identifier. 9213 */ 9214 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9215 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9216 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9217 9218 /* 9219 * desc1 is for the WWPN which is a port asscociation. 9220 */ 9221 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9222 desc1->length = CTL_WWPN_LEN; 9223 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9224 /* For testing just create the WWPN */ 9225#if 0 9226 ddb_GetWWNN((char *)desc1->identifier); 9227 9228 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9229 /* This is so Copancontrol will return something sane */ 9230 if (ctsio->io_hdr.nexus.targ_port!=0 && 9231 ctsio->io_hdr.nexus.targ_port!=8) 9232 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9233 else 9234 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9235#endif 9236 9237 be64enc(desc1->identifier, fe->wwpn); 9238 9239 /* 9240 * desc2 is for the Relative Target Port(type 4h) identifier 9241 */ 9242 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9243 | SVPD_ID_TYPE_RELTARG; 9244 desc2->length = 4; 9245//#if 0 9246 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9247 /* This is so Copancontrol will return something sane */ 9248 if (ctsio->io_hdr.nexus.targ_port!=0 && 9249 ctsio->io_hdr.nexus.targ_port!=8) 9250 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9251 else 9252 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9253//#endif 9254 9255 /* 9256 * desc3 is for the Target Port Group(type 5h) identifier 9257 */ 9258 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9259 | SVPD_ID_TYPE_TPORTGRP; 9260 desc3->length = 4; 9261 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9262 desc3->identifier[3] = 1; 9263 else 9264 desc3->identifier[3] = 2; 9265 9266#ifdef CTL_USE_BACKEND_SN 9267 /* 9268 * If we've actually got a backend, copy the device id from the 9269 * per-LUN data. Otherwise, set it to all spaces. 9270 */ 9271 if (lun != NULL) { 9272 /* 9273 * Copy the backend's LUN ID. 9274 */ 9275 strncpy((char *)t10id->vendor_spec_id, 9276 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9277 } else { 9278 /* 9279 * No backend, set this to spaces. 9280 */ 9281 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9282 } 9283#else 9284 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9285 (lun != NULL) ? (int)lun->lun : 0); 9286 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9287 sizeof(tmpstr))); 9288#endif 9289 9290 ctsio->scsi_status = SCSI_STATUS_OK; 9291 9292 ctsio->be_move_done = ctl_config_move_done; 9293 ctl_datamove((union ctl_io *)ctsio); 9294 9295 return (CTL_RETVAL_COMPLETE); 9296} 9297 9298static int 9299ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9300{ 9301 struct scsi_inquiry *cdb; 9302 int alloc_len, retval; 9303 9304 cdb = (struct scsi_inquiry *)ctsio->cdb; 9305 9306 retval = CTL_RETVAL_COMPLETE; 9307 9308 alloc_len = scsi_2btoul(cdb->length); 9309 9310 switch (cdb->page_code) { 9311 case SVPD_SUPPORTED_PAGES: 9312 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9313 break; 9314 case SVPD_UNIT_SERIAL_NUMBER: 9315 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9316 break; 9317 case SVPD_DEVICE_ID: 9318 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9319 break; 9320 default: 9321 ctl_set_invalid_field(ctsio, 9322 /*sks_valid*/ 1, 9323 /*command*/ 1, 9324 /*field*/ 2, 9325 /*bit_valid*/ 0, 9326 /*bit*/ 0); 9327 ctl_done((union ctl_io *)ctsio); 9328 retval = CTL_RETVAL_COMPLETE; 9329 break; 9330 } 9331 9332 return (retval); 9333} 9334 9335static int 9336ctl_inquiry_std(struct ctl_scsiio *ctsio) 9337{ 9338 struct scsi_inquiry_data *inq_ptr; 9339 struct scsi_inquiry *cdb; 9340 struct ctl_softc *ctl_softc; 9341 struct ctl_lun *lun; 9342 uint32_t alloc_len; 9343 int is_fc; 9344 9345 ctl_softc = control_softc; 9346 9347 /* 9348 * Figure out whether we're talking to a Fibre Channel port or not. 9349 * We treat the ioctl front end, and any SCSI adapters, as packetized 9350 * SCSI front ends. 9351 */ 9352 mtx_lock(&ctl_softc->ctl_lock); 9353 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9354 CTL_PORT_FC) 9355 is_fc = 0; 9356 else 9357 is_fc = 1; 9358 mtx_unlock(&ctl_softc->ctl_lock); 9359 9360 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9361 cdb = (struct scsi_inquiry *)ctsio->cdb; 9362 alloc_len = scsi_2btoul(cdb->length); 9363 9364 /* 9365 * We malloc the full inquiry data size here and fill it 9366 * in. If the user only asks for less, we'll give him 9367 * that much. 9368 */ 9369 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9370 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9371 ctsio->kern_sg_entries = 0; 9372 ctsio->kern_data_resid = 0; 9373 ctsio->kern_rel_offset = 0; 9374 9375 if (sizeof(*inq_ptr) < alloc_len) { 9376 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9377 ctsio->kern_data_len = sizeof(*inq_ptr); 9378 ctsio->kern_total_len = sizeof(*inq_ptr); 9379 } else { 9380 ctsio->residual = 0; 9381 ctsio->kern_data_len = alloc_len; 9382 ctsio->kern_total_len = alloc_len; 9383 } 9384 9385 /* 9386 * If we have a LUN configured, report it as connected. Otherwise, 9387 * report that it is offline or no device is supported, depending 9388 * on the value of inquiry_pq_no_lun. 9389 * 9390 * According to the spec (SPC-4 r34), the peripheral qualifier 9391 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9392 * 9393 * "A peripheral device having the specified peripheral device type 9394 * is not connected to this logical unit. However, the device 9395 * server is capable of supporting the specified peripheral device 9396 * type on this logical unit." 9397 * 9398 * According to the same spec, the peripheral qualifier 9399 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9400 * 9401 * "The device server is not capable of supporting a peripheral 9402 * device on this logical unit. For this peripheral qualifier the 9403 * peripheral device type shall be set to 1Fh. All other peripheral 9404 * device type values are reserved for this peripheral qualifier." 9405 * 9406 * Given the text, it would seem that we probably want to report that 9407 * the LUN is offline here. There is no LUN connected, but we can 9408 * support a LUN at the given LUN number. 9409 * 9410 * In the real world, though, it sounds like things are a little 9411 * different: 9412 * 9413 * - Linux, when presented with a LUN with the offline peripheral 9414 * qualifier, will create an sg driver instance for it. So when 9415 * you attach it to CTL, you wind up with a ton of sg driver 9416 * instances. (One for every LUN that Linux bothered to probe.) 9417 * Linux does this despite the fact that it issues a REPORT LUNs 9418 * to LUN 0 to get the inventory of supported LUNs. 9419 * 9420 * - There is other anecdotal evidence (from Emulex folks) about 9421 * arrays that use the offline peripheral qualifier for LUNs that 9422 * are on the "passive" path in an active/passive array. 9423 * 9424 * So the solution is provide a hopefully reasonable default 9425 * (return bad/no LUN) and allow the user to change the behavior 9426 * with a tunable/sysctl variable. 9427 */ 9428 if (lun != NULL) 9429 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9430 lun->be_lun->lun_type; 9431 else if (ctl_softc->inquiry_pq_no_lun == 0) 9432 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9433 else 9434 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9435 9436 /* RMB in byte 2 is 0 */ 9437 inq_ptr->version = SCSI_REV_SPC3; 9438 9439 /* 9440 * According to SAM-3, even if a device only supports a single 9441 * level of LUN addressing, it should still set the HISUP bit: 9442 * 9443 * 4.9.1 Logical unit numbers overview 9444 * 9445 * All logical unit number formats described in this standard are 9446 * hierarchical in structure even when only a single level in that 9447 * hierarchy is used. The HISUP bit shall be set to one in the 9448 * standard INQUIRY data (see SPC-2) when any logical unit number 9449 * format described in this standard is used. Non-hierarchical 9450 * formats are outside the scope of this standard. 9451 * 9452 * Therefore we set the HiSup bit here. 9453 * 9454 * The reponse format is 2, per SPC-3. 9455 */ 9456 inq_ptr->response_format = SID_HiSup | 2; 9457 9458 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9459 CTL_DEBUG_PRINT(("additional_length = %d\n", 9460 inq_ptr->additional_length)); 9461 9462 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9463 /* 16 bit addressing */ 9464 if (is_fc == 0) 9465 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9466 /* XXX set the SID_MultiP bit here if we're actually going to 9467 respond on multiple ports */ 9468 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9469 9470 /* 16 bit data bus, synchronous transfers */ 9471 /* XXX these flags don't apply for FC */ 9472 if (is_fc == 0) 9473 inq_ptr->flags = SID_WBus16 | SID_Sync; 9474 /* 9475 * XXX KDM do we want to support tagged queueing on the control 9476 * device at all? 9477 */ 9478 if ((lun == NULL) 9479 || (lun->be_lun->lun_type != T_PROCESSOR)) 9480 inq_ptr->flags |= SID_CmdQue; 9481 /* 9482 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9483 * We have 8 bytes for the vendor name, and 16 bytes for the device 9484 * name and 4 bytes for the revision. 9485 */ 9486 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9487 if (lun == NULL) { 9488 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9489 } else { 9490 switch (lun->be_lun->lun_type) { 9491 case T_DIRECT: 9492 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9493 break; 9494 case T_PROCESSOR: 9495 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9496 break; 9497 default: 9498 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9499 break; 9500 } 9501 } 9502 9503 /* 9504 * XXX make this a macro somewhere so it automatically gets 9505 * incremented when we make changes. 9506 */ 9507 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9508 9509 /* 9510 * For parallel SCSI, we support double transition and single 9511 * transition clocking. We also support QAS (Quick Arbitration 9512 * and Selection) and Information Unit transfers on both the 9513 * control and array devices. 9514 */ 9515 if (is_fc == 0) 9516 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9517 SID_SPI_IUS; 9518 9519 /* SAM-3 */ 9520 scsi_ulto2b(0x0060, inq_ptr->version1); 9521 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9522 scsi_ulto2b(0x0300, inq_ptr->version2); 9523 if (is_fc) { 9524 /* FCP-2 ANSI INCITS.350:2003 */ 9525 scsi_ulto2b(0x0917, inq_ptr->version3); 9526 } else { 9527 /* SPI-4 ANSI INCITS.362:200x */ 9528 scsi_ulto2b(0x0B56, inq_ptr->version3); 9529 } 9530 9531 if (lun == NULL) { 9532 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9533 scsi_ulto2b(0x0320, inq_ptr->version4); 9534 } else { 9535 switch (lun->be_lun->lun_type) { 9536 case T_DIRECT: 9537 /* 9538 * SBC-2 (no version claimed) XXX should we claim a 9539 * version? 9540 */ 9541 scsi_ulto2b(0x0320, inq_ptr->version4); 9542 break; 9543 case T_PROCESSOR: 9544 default: 9545 break; 9546 } 9547 } 9548 9549 ctsio->scsi_status = SCSI_STATUS_OK; 9550 if (ctsio->kern_data_len > 0) { 9551 ctsio->be_move_done = ctl_config_move_done; 9552 ctl_datamove((union ctl_io *)ctsio); 9553 } else { 9554 ctsio->io_hdr.status = CTL_SUCCESS; 9555 ctl_done((union ctl_io *)ctsio); 9556 } 9557 9558 return (CTL_RETVAL_COMPLETE); 9559} 9560 9561int 9562ctl_inquiry(struct ctl_scsiio *ctsio) 9563{ 9564 struct scsi_inquiry *cdb; 9565 int retval; 9566 9567 cdb = (struct scsi_inquiry *)ctsio->cdb; 9568 9569 retval = 0; 9570 9571 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9572 9573 /* 9574 * Right now, we don't support the CmdDt inquiry information. 9575 * This would be nice to support in the future. When we do 9576 * support it, we should change this test so that it checks to make 9577 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9578 */ 9579#ifdef notyet 9580 if (((cdb->byte2 & SI_EVPD) 9581 && (cdb->byte2 & SI_CMDDT))) 9582#endif 9583 if (cdb->byte2 & SI_CMDDT) { 9584 /* 9585 * Point to the SI_CMDDT bit. We might change this 9586 * when we support SI_CMDDT, but since both bits would be 9587 * "wrong", this should probably just stay as-is then. 9588 */ 9589 ctl_set_invalid_field(ctsio, 9590 /*sks_valid*/ 1, 9591 /*command*/ 1, 9592 /*field*/ 1, 9593 /*bit_valid*/ 1, 9594 /*bit*/ 1); 9595 ctl_done((union ctl_io *)ctsio); 9596 return (CTL_RETVAL_COMPLETE); 9597 } 9598 if (cdb->byte2 & SI_EVPD) 9599 retval = ctl_inquiry_evpd(ctsio); 9600#ifdef notyet 9601 else if (cdb->byte2 & SI_CMDDT) 9602 retval = ctl_inquiry_cmddt(ctsio); 9603#endif 9604 else 9605 retval = ctl_inquiry_std(ctsio); 9606 9607 return (retval); 9608} 9609 9610/* 9611 * For known CDB types, parse the LBA and length. 9612 */ 9613static int 9614ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9615{ 9616 if (io->io_hdr.io_type != CTL_IO_SCSI) 9617 return (1); 9618 9619 switch (io->scsiio.cdb[0]) { 9620 case READ_6: 9621 case WRITE_6: { 9622 struct scsi_rw_6 *cdb; 9623 9624 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9625 9626 *lba = scsi_3btoul(cdb->addr); 9627 /* only 5 bits are valid in the most significant address byte */ 9628 *lba &= 0x1fffff; 9629 *len = cdb->length; 9630 break; 9631 } 9632 case READ_10: 9633 case WRITE_10: { 9634 struct scsi_rw_10 *cdb; 9635 9636 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9637 9638 *lba = scsi_4btoul(cdb->addr); 9639 *len = scsi_2btoul(cdb->length); 9640 break; 9641 } 9642 case WRITE_VERIFY_10: { 9643 struct scsi_write_verify_10 *cdb; 9644 9645 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9646 9647 *lba = scsi_4btoul(cdb->addr); 9648 *len = scsi_2btoul(cdb->length); 9649 break; 9650 } 9651 case READ_12: 9652 case WRITE_12: { 9653 struct scsi_rw_12 *cdb; 9654 9655 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9656 9657 *lba = scsi_4btoul(cdb->addr); 9658 *len = scsi_4btoul(cdb->length); 9659 break; 9660 } 9661 case WRITE_VERIFY_12: { 9662 struct scsi_write_verify_12 *cdb; 9663 9664 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9665 9666 *lba = scsi_4btoul(cdb->addr); 9667 *len = scsi_4btoul(cdb->length); 9668 break; 9669 } 9670 case READ_16: 9671 case WRITE_16: { 9672 struct scsi_rw_16 *cdb; 9673 9674 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9675 9676 *lba = scsi_8btou64(cdb->addr); 9677 *len = scsi_4btoul(cdb->length); 9678 break; 9679 } 9680 case WRITE_VERIFY_16: { 9681 struct scsi_write_verify_16 *cdb; 9682 9683 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9684 9685 9686 *lba = scsi_8btou64(cdb->addr); 9687 *len = scsi_4btoul(cdb->length); 9688 break; 9689 } 9690 default: 9691 return (1); 9692 break; /* NOTREACHED */ 9693 } 9694 9695 return (0); 9696} 9697 9698static ctl_action 9699ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 9700{ 9701 uint64_t endlba1, endlba2; 9702 9703 endlba1 = lba1 + len1 - 1; 9704 endlba2 = lba2 + len2 - 1; 9705 9706 if ((endlba1 < lba2) 9707 || (endlba2 < lba1)) 9708 return (CTL_ACTION_PASS); 9709 else 9710 return (CTL_ACTION_BLOCK); 9711} 9712 9713static ctl_action 9714ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 9715{ 9716 uint64_t lba1, lba2; 9717 uint32_t len1, len2; 9718 int retval; 9719 9720 retval = ctl_get_lba_len(io1, &lba1, &len1); 9721 if (retval != 0) 9722 return (CTL_ACTION_ERROR); 9723 9724 retval = ctl_get_lba_len(io2, &lba2, &len2); 9725 if (retval != 0) 9726 return (CTL_ACTION_ERROR); 9727 9728 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 9729} 9730 9731static ctl_action 9732ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 9733{ 9734 struct ctl_cmd_entry *pending_entry, *ooa_entry; 9735 ctl_serialize_action *serialize_row; 9736 9737 /* 9738 * The initiator attempted multiple untagged commands at the same 9739 * time. Can't do that. 9740 */ 9741 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9742 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9743 && ((pending_io->io_hdr.nexus.targ_port == 9744 ooa_io->io_hdr.nexus.targ_port) 9745 && (pending_io->io_hdr.nexus.initid.id == 9746 ooa_io->io_hdr.nexus.initid.id)) 9747 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9748 return (CTL_ACTION_OVERLAP); 9749 9750 /* 9751 * The initiator attempted to send multiple tagged commands with 9752 * the same ID. (It's fine if different initiators have the same 9753 * tag ID.) 9754 * 9755 * Even if all of those conditions are true, we don't kill the I/O 9756 * if the command ahead of us has been aborted. We won't end up 9757 * sending it to the FETD, and it's perfectly legal to resend a 9758 * command with the same tag number as long as the previous 9759 * instance of this tag number has been aborted somehow. 9760 */ 9761 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9762 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9763 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 9764 && ((pending_io->io_hdr.nexus.targ_port == 9765 ooa_io->io_hdr.nexus.targ_port) 9766 && (pending_io->io_hdr.nexus.initid.id == 9767 ooa_io->io_hdr.nexus.initid.id)) 9768 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9769 return (CTL_ACTION_OVERLAP_TAG); 9770 9771 /* 9772 * If we get a head of queue tag, SAM-3 says that we should 9773 * immediately execute it. 9774 * 9775 * What happens if this command would normally block for some other 9776 * reason? e.g. a request sense with a head of queue tag 9777 * immediately after a write. Normally that would block, but this 9778 * will result in its getting executed immediately... 9779 * 9780 * We currently return "pass" instead of "skip", so we'll end up 9781 * going through the rest of the queue to check for overlapped tags. 9782 * 9783 * XXX KDM check for other types of blockage first?? 9784 */ 9785 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9786 return (CTL_ACTION_PASS); 9787 9788 /* 9789 * Ordered tags have to block until all items ahead of them 9790 * have completed. If we get called with an ordered tag, we always 9791 * block, if something else is ahead of us in the queue. 9792 */ 9793 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 9794 return (CTL_ACTION_BLOCK); 9795 9796 /* 9797 * Simple tags get blocked until all head of queue and ordered tags 9798 * ahead of them have completed. I'm lumping untagged commands in 9799 * with simple tags here. XXX KDM is that the right thing to do? 9800 */ 9801 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9802 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 9803 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9804 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 9805 return (CTL_ACTION_BLOCK); 9806 9807 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 9808 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 9809 9810 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 9811 9812 switch (serialize_row[pending_entry->seridx]) { 9813 case CTL_SER_BLOCK: 9814 return (CTL_ACTION_BLOCK); 9815 break; /* NOTREACHED */ 9816 case CTL_SER_EXTENT: 9817 return (ctl_extent_check(pending_io, ooa_io)); 9818 break; /* NOTREACHED */ 9819 case CTL_SER_PASS: 9820 return (CTL_ACTION_PASS); 9821 break; /* NOTREACHED */ 9822 case CTL_SER_SKIP: 9823 return (CTL_ACTION_SKIP); 9824 break; 9825 default: 9826 panic("invalid serialization value %d", 9827 serialize_row[pending_entry->seridx]); 9828 break; /* NOTREACHED */ 9829 } 9830 9831 return (CTL_ACTION_ERROR); 9832} 9833 9834/* 9835 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 9836 * Assumptions: 9837 * - pending_io is generally either incoming, or on the blocked queue 9838 * - starting I/O is the I/O we want to start the check with. 9839 */ 9840static ctl_action 9841ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 9842 union ctl_io *starting_io) 9843{ 9844 union ctl_io *ooa_io; 9845 ctl_action action; 9846 9847 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 9848 9849 /* 9850 * Run back along the OOA queue, starting with the current 9851 * blocked I/O and going through every I/O before it on the 9852 * queue. If starting_io is NULL, we'll just end up returning 9853 * CTL_ACTION_PASS. 9854 */ 9855 for (ooa_io = starting_io; ooa_io != NULL; 9856 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 9857 ooa_links)){ 9858 9859 /* 9860 * This routine just checks to see whether 9861 * cur_blocked is blocked by ooa_io, which is ahead 9862 * of it in the queue. It doesn't queue/dequeue 9863 * cur_blocked. 9864 */ 9865 action = ctl_check_for_blockage(pending_io, ooa_io); 9866 switch (action) { 9867 case CTL_ACTION_BLOCK: 9868 case CTL_ACTION_OVERLAP: 9869 case CTL_ACTION_OVERLAP_TAG: 9870 case CTL_ACTION_SKIP: 9871 case CTL_ACTION_ERROR: 9872 return (action); 9873 break; /* NOTREACHED */ 9874 case CTL_ACTION_PASS: 9875 break; 9876 default: 9877 panic("invalid action %d", action); 9878 break; /* NOTREACHED */ 9879 } 9880 } 9881 9882 return (CTL_ACTION_PASS); 9883} 9884 9885/* 9886 * Assumptions: 9887 * - An I/O has just completed, and has been removed from the per-LUN OOA 9888 * queue, so some items on the blocked queue may now be unblocked. 9889 */ 9890static int 9891ctl_check_blocked(struct ctl_lun *lun) 9892{ 9893 union ctl_io *cur_blocked, *next_blocked; 9894 9895 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 9896 9897 /* 9898 * Run forward from the head of the blocked queue, checking each 9899 * entry against the I/Os prior to it on the OOA queue to see if 9900 * there is still any blockage. 9901 * 9902 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 9903 * with our removing a variable on it while it is traversing the 9904 * list. 9905 */ 9906 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 9907 cur_blocked != NULL; cur_blocked = next_blocked) { 9908 union ctl_io *prev_ooa; 9909 ctl_action action; 9910 9911 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 9912 blocked_links); 9913 9914 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 9915 ctl_ooaq, ooa_links); 9916 9917 /* 9918 * If cur_blocked happens to be the first item in the OOA 9919 * queue now, prev_ooa will be NULL, and the action 9920 * returned will just be CTL_ACTION_PASS. 9921 */ 9922 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 9923 9924 switch (action) { 9925 case CTL_ACTION_BLOCK: 9926 /* Nothing to do here, still blocked */ 9927 break; 9928 case CTL_ACTION_OVERLAP: 9929 case CTL_ACTION_OVERLAP_TAG: 9930 /* 9931 * This shouldn't happen! In theory we've already 9932 * checked this command for overlap... 9933 */ 9934 break; 9935 case CTL_ACTION_PASS: 9936 case CTL_ACTION_SKIP: { 9937 struct ctl_softc *softc; 9938 struct ctl_cmd_entry *entry; 9939 uint32_t initidx; 9940 uint8_t opcode; 9941 int isc_retval; 9942 9943 /* 9944 * The skip case shouldn't happen, this transaction 9945 * should have never made it onto the blocked queue. 9946 */ 9947 /* 9948 * This I/O is no longer blocked, we can remove it 9949 * from the blocked queue. Since this is a TAILQ 9950 * (doubly linked list), we can do O(1) removals 9951 * from any place on the list. 9952 */ 9953 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 9954 blocked_links); 9955 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 9956 9957 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 9958 /* 9959 * Need to send IO back to original side to 9960 * run 9961 */ 9962 union ctl_ha_msg msg_info; 9963 9964 msg_info.hdr.original_sc = 9965 cur_blocked->io_hdr.original_sc; 9966 msg_info.hdr.serializing_sc = cur_blocked; 9967 msg_info.hdr.msg_type = CTL_MSG_R2R; 9968 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 9969 &msg_info, sizeof(msg_info), 0)) > 9970 CTL_HA_STATUS_SUCCESS) { 9971 printf("CTL:Check Blocked error from " 9972 "ctl_ha_msg_send %d\n", 9973 isc_retval); 9974 } 9975 break; 9976 } 9977 opcode = cur_blocked->scsiio.cdb[0]; 9978 entry = &ctl_cmd_table[opcode]; 9979 softc = control_softc; 9980 9981 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 9982 9983 /* 9984 * Check this I/O for LUN state changes that may 9985 * have happened while this command was blocked. 9986 * The LUN state may have been changed by a command 9987 * ahead of us in the queue, so we need to re-check 9988 * for any states that can be caused by SCSI 9989 * commands. 9990 */ 9991 if (ctl_scsiio_lun_check(softc, lun, entry, 9992 &cur_blocked->scsiio) == 0) { 9993 cur_blocked->io_hdr.flags |= 9994 CTL_FLAG_IS_WAS_ON_RTR; 9995 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 9996 &cur_blocked->io_hdr, links); 9997 /* 9998 * In the non CTL_DONE_THREAD case, we need 9999 * to wake up the work thread here. When 10000 * we're processing completed requests from 10001 * the work thread context, we'll pop back 10002 * around and end up pulling things off the 10003 * RtR queue. When we aren't processing 10004 * things from the work thread context, 10005 * though, we won't ever check the RtR queue. 10006 * So we need to wake up the thread to clear 10007 * things off the queue. Otherwise this 10008 * transaction will just sit on the RtR queue 10009 * until a new I/O comes in. (Which may or 10010 * may not happen...) 10011 */ 10012#ifndef CTL_DONE_THREAD 10013 ctl_wakeup_thread(); 10014#endif 10015 } else 10016 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10017 break; 10018 } 10019 default: 10020 /* 10021 * This probably shouldn't happen -- we shouldn't 10022 * get CTL_ACTION_ERROR, or anything else. 10023 */ 10024 break; 10025 } 10026 } 10027 10028 return (CTL_RETVAL_COMPLETE); 10029} 10030 10031/* 10032 * This routine (with one exception) checks LUN flags that can be set by 10033 * commands ahead of us in the OOA queue. These flags have to be checked 10034 * when a command initially comes in, and when we pull a command off the 10035 * blocked queue and are preparing to execute it. The reason we have to 10036 * check these flags for commands on the blocked queue is that the LUN 10037 * state may have been changed by a command ahead of us while we're on the 10038 * blocked queue. 10039 * 10040 * Ordering is somewhat important with these checks, so please pay 10041 * careful attention to the placement of any new checks. 10042 */ 10043static int 10044ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10045 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10046{ 10047 int retval; 10048 10049 retval = 0; 10050 10051 /* 10052 * If this shelf is a secondary shelf controller, we have to reject 10053 * any media access commands. 10054 */ 10055#if 0 10056 /* No longer needed for HA */ 10057 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10058 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10059 ctl_set_lun_standby(ctsio); 10060 retval = 1; 10061 goto bailout; 10062 } 10063#endif 10064 10065 /* 10066 * Check for a reservation conflict. If this command isn't allowed 10067 * even on reserved LUNs, and if this initiator isn't the one who 10068 * reserved us, reject the command with a reservation conflict. 10069 */ 10070 if ((lun->flags & CTL_LUN_RESERVED) 10071 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10072 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10073 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10074 || (ctsio->io_hdr.nexus.targ_target.id != 10075 lun->rsv_nexus.targ_target.id)) { 10076 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10077 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10078 retval = 1; 10079 goto bailout; 10080 } 10081 } 10082 10083 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10084 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10085 uint32_t residx; 10086 10087 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10088 /* 10089 * if we aren't registered or it's a res holder type 10090 * reservation and this isn't the res holder then set a 10091 * conflict. 10092 * NOTE: Commands which might be allowed on write exclusive 10093 * type reservations are checked in the particular command 10094 * for a conflict. Read and SSU are the only ones. 10095 */ 10096 if (!lun->per_res[residx].registered 10097 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10098 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10099 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10100 retval = 1; 10101 goto bailout; 10102 } 10103 10104 } 10105 10106 if ((lun->flags & CTL_LUN_OFFLINE) 10107 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10108 ctl_set_lun_not_ready(ctsio); 10109 retval = 1; 10110 goto bailout; 10111 } 10112 10113 /* 10114 * If the LUN is stopped, see if this particular command is allowed 10115 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10116 */ 10117 if ((lun->flags & CTL_LUN_STOPPED) 10118 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10119 /* "Logical unit not ready, initializing cmd. required" */ 10120 ctl_set_lun_stopped(ctsio); 10121 retval = 1; 10122 goto bailout; 10123 } 10124 10125 if ((lun->flags & CTL_LUN_INOPERABLE) 10126 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10127 /* "Medium format corrupted" */ 10128 ctl_set_medium_format_corrupted(ctsio); 10129 retval = 1; 10130 goto bailout; 10131 } 10132 10133bailout: 10134 return (retval); 10135 10136} 10137 10138static void 10139ctl_failover_io(union ctl_io *io, int have_lock) 10140{ 10141 ctl_set_busy(&io->scsiio); 10142 ctl_done_lock(io, have_lock); 10143} 10144 10145static void 10146ctl_failover(void) 10147{ 10148 struct ctl_lun *lun; 10149 struct ctl_softc *ctl_softc; 10150 union ctl_io *next_io, *pending_io; 10151 union ctl_io *io; 10152 int lun_idx; 10153 int i; 10154 10155 ctl_softc = control_softc; 10156 10157 mtx_lock(&ctl_softc->ctl_lock); 10158 /* 10159 * Remove any cmds from the other SC from the rtr queue. These 10160 * will obviously only be for LUNs for which we're the primary. 10161 * We can't send status or get/send data for these commands. 10162 * Since they haven't been executed yet, we can just remove them. 10163 * We'll either abort them or delete them below, depending on 10164 * which HA mode we're in. 10165 */ 10166 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10167 io != NULL; io = next_io) { 10168 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10169 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10170 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10171 ctl_io_hdr, links); 10172 } 10173 10174 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10175 lun = ctl_softc->ctl_luns[lun_idx]; 10176 if (lun==NULL) 10177 continue; 10178 10179 /* 10180 * Processor LUNs are primary on both sides. 10181 * XXX will this always be true? 10182 */ 10183 if (lun->be_lun->lun_type == T_PROCESSOR) 10184 continue; 10185 10186 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10187 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10188 printf("FAILOVER: primary lun %d\n", lun_idx); 10189 /* 10190 * Remove all commands from the other SC. First from the 10191 * blocked queue then from the ooa queue. Once we have 10192 * removed them. Call ctl_check_blocked to see if there 10193 * is anything that can run. 10194 */ 10195 for (io = (union ctl_io *)TAILQ_FIRST( 10196 &lun->blocked_queue); io != NULL; io = next_io) { 10197 10198 next_io = (union ctl_io *)TAILQ_NEXT( 10199 &io->io_hdr, blocked_links); 10200 10201 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10202 TAILQ_REMOVE(&lun->blocked_queue, 10203 &io->io_hdr,blocked_links); 10204 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10205 TAILQ_REMOVE(&lun->ooa_queue, 10206 &io->io_hdr, ooa_links); 10207 10208 ctl_free_io(io); 10209 } 10210 } 10211 10212 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10213 io != NULL; io = next_io) { 10214 10215 next_io = (union ctl_io *)TAILQ_NEXT( 10216 &io->io_hdr, ooa_links); 10217 10218 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10219 10220 TAILQ_REMOVE(&lun->ooa_queue, 10221 &io->io_hdr, 10222 ooa_links); 10223 10224 ctl_free_io(io); 10225 } 10226 } 10227 ctl_check_blocked(lun); 10228 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10229 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10230 10231 printf("FAILOVER: primary lun %d\n", lun_idx); 10232 /* 10233 * Abort all commands from the other SC. We can't 10234 * send status back for them now. These should get 10235 * cleaned up when they are completed or come out 10236 * for a datamove operation. 10237 */ 10238 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10239 io != NULL; io = next_io) { 10240 next_io = (union ctl_io *)TAILQ_NEXT( 10241 &io->io_hdr, ooa_links); 10242 10243 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10244 io->io_hdr.flags |= CTL_FLAG_ABORT; 10245 } 10246 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10247 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10248 10249 printf("FAILOVER: secondary lun %d\n", lun_idx); 10250 10251 lun->flags |= CTL_LUN_PRIMARY_SC; 10252 10253 /* 10254 * We send all I/O that was sent to this controller 10255 * and redirected to the other side back with 10256 * busy status, and have the initiator retry it. 10257 * Figuring out how much data has been transferred, 10258 * etc. and picking up where we left off would be 10259 * very tricky. 10260 * 10261 * XXX KDM need to remove I/O from the blocked 10262 * queue as well! 10263 */ 10264 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10265 &lun->ooa_queue); pending_io != NULL; 10266 pending_io = next_io) { 10267 10268 next_io = (union ctl_io *)TAILQ_NEXT( 10269 &pending_io->io_hdr, ooa_links); 10270 10271 pending_io->io_hdr.flags &= 10272 ~CTL_FLAG_SENT_2OTHER_SC; 10273 10274 if (pending_io->io_hdr.flags & 10275 CTL_FLAG_IO_ACTIVE) { 10276 pending_io->io_hdr.flags |= 10277 CTL_FLAG_FAILOVER; 10278 } else { 10279 ctl_set_busy(&pending_io->scsiio); 10280 ctl_done_lock(pending_io, 10281 /*have_lock*/1); 10282 } 10283 } 10284 10285 /* 10286 * Build Unit Attention 10287 */ 10288 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10289 lun->pending_sense[i].ua_pending |= 10290 CTL_UA_ASYM_ACC_CHANGE; 10291 } 10292 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10293 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10294 printf("FAILOVER: secondary lun %d\n", lun_idx); 10295 /* 10296 * if the first io on the OOA is not on the RtR queue 10297 * add it. 10298 */ 10299 lun->flags |= CTL_LUN_PRIMARY_SC; 10300 10301 pending_io = (union ctl_io *)TAILQ_FIRST( 10302 &lun->ooa_queue); 10303 if (pending_io==NULL) { 10304 printf("Nothing on OOA queue\n"); 10305 continue; 10306 } 10307 10308 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10309 if ((pending_io->io_hdr.flags & 10310 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10311 pending_io->io_hdr.flags |= 10312 CTL_FLAG_IS_WAS_ON_RTR; 10313 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10314 &pending_io->io_hdr, links); 10315 } 10316#if 0 10317 else 10318 { 10319 printf("Tag 0x%04x is running\n", 10320 pending_io->scsiio.tag_num); 10321 } 10322#endif 10323 10324 next_io = (union ctl_io *)TAILQ_NEXT( 10325 &pending_io->io_hdr, ooa_links); 10326 for (pending_io=next_io; pending_io != NULL; 10327 pending_io = next_io) { 10328 pending_io->io_hdr.flags &= 10329 ~CTL_FLAG_SENT_2OTHER_SC; 10330 next_io = (union ctl_io *)TAILQ_NEXT( 10331 &pending_io->io_hdr, ooa_links); 10332 if (pending_io->io_hdr.flags & 10333 CTL_FLAG_IS_WAS_ON_RTR) { 10334#if 0 10335 printf("Tag 0x%04x is running\n", 10336 pending_io->scsiio.tag_num); 10337#endif 10338 continue; 10339 } 10340 10341 switch (ctl_check_ooa(lun, pending_io, 10342 (union ctl_io *)TAILQ_PREV( 10343 &pending_io->io_hdr, ctl_ooaq, 10344 ooa_links))) { 10345 10346 case CTL_ACTION_BLOCK: 10347 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10348 &pending_io->io_hdr, 10349 blocked_links); 10350 pending_io->io_hdr.flags |= 10351 CTL_FLAG_BLOCKED; 10352 break; 10353 case CTL_ACTION_PASS: 10354 case CTL_ACTION_SKIP: 10355 pending_io->io_hdr.flags |= 10356 CTL_FLAG_IS_WAS_ON_RTR; 10357 STAILQ_INSERT_TAIL( 10358 &ctl_softc->rtr_queue, 10359 &pending_io->io_hdr, links); 10360 break; 10361 case CTL_ACTION_OVERLAP: 10362 ctl_set_overlapped_cmd( 10363 (struct ctl_scsiio *)pending_io); 10364 ctl_done_lock(pending_io, 10365 /*have_lock*/ 1); 10366 break; 10367 case CTL_ACTION_OVERLAP_TAG: 10368 ctl_set_overlapped_tag( 10369 (struct ctl_scsiio *)pending_io, 10370 pending_io->scsiio.tag_num & 0xff); 10371 ctl_done_lock(pending_io, 10372 /*have_lock*/ 1); 10373 break; 10374 case CTL_ACTION_ERROR: 10375 default: 10376 ctl_set_internal_failure( 10377 (struct ctl_scsiio *)pending_io, 10378 0, // sks_valid 10379 0); //retry count 10380 ctl_done_lock(pending_io, 10381 /*have_lock*/ 1); 10382 break; 10383 } 10384 } 10385 10386 /* 10387 * Build Unit Attention 10388 */ 10389 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10390 lun->pending_sense[i].ua_pending |= 10391 CTL_UA_ASYM_ACC_CHANGE; 10392 } 10393 } else { 10394 panic("Unhandled HA mode failover, LUN flags = %#x, " 10395 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10396 } 10397 } 10398 ctl_pause_rtr = 0; 10399 mtx_unlock(&ctl_softc->ctl_lock); 10400} 10401 10402static int 10403ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10404{ 10405 struct ctl_lun *lun; 10406 struct ctl_cmd_entry *entry; 10407 uint8_t opcode; 10408 uint32_t initidx, targ_lun; 10409 int retval; 10410 10411 retval = 0; 10412 10413 lun = NULL; 10414 10415 opcode = ctsio->cdb[0]; 10416 10417 mtx_lock(&ctl_softc->ctl_lock); 10418 10419 targ_lun = ctsio->io_hdr.nexus.targ_lun; 10420 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 10421 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 10422 if ((targ_lun < CTL_MAX_LUNS) 10423 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 10424 lun = ctl_softc->ctl_luns[targ_lun]; 10425 /* 10426 * If the LUN is invalid, pretend that it doesn't exist. 10427 * It will go away as soon as all pending I/O has been 10428 * completed. 10429 */ 10430 if (lun->flags & CTL_LUN_DISABLED) { 10431 lun = NULL; 10432 } else { 10433 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10434 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10435 lun->be_lun; 10436 if (lun->be_lun->lun_type == T_PROCESSOR) { 10437 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10438 } 10439 } 10440 } else { 10441 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10442 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10443 } 10444 10445 entry = &ctl_cmd_table[opcode]; 10446 10447 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10448 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10449 10450 /* 10451 * Check to see whether we can send this command to LUNs that don't 10452 * exist. This should pretty much only be the case for inquiry 10453 * and request sense. Further checks, below, really require having 10454 * a LUN, so we can't really check the command anymore. Just put 10455 * it on the rtr queue. 10456 */ 10457 if (lun == NULL) { 10458 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10459 goto queue_rtr; 10460 10461 ctl_set_unsupported_lun(ctsio); 10462 mtx_unlock(&ctl_softc->ctl_lock); 10463 ctl_done((union ctl_io *)ctsio); 10464 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 10465 goto bailout; 10466 } else { 10467 /* 10468 * Every I/O goes into the OOA queue for a particular LUN, and 10469 * stays there until completion. 10470 */ 10471 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10472 10473 /* 10474 * Make sure we support this particular command on this LUN. 10475 * e.g., we don't support writes to the control LUN. 10476 */ 10477 switch (lun->be_lun->lun_type) { 10478 case T_PROCESSOR: 10479 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10480 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10481 == 0)) { 10482 ctl_set_invalid_opcode(ctsio); 10483 mtx_unlock(&ctl_softc->ctl_lock); 10484 ctl_done((union ctl_io *)ctsio); 10485 goto bailout; 10486 } 10487 break; 10488 case T_DIRECT: 10489 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10490 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10491 == 0)){ 10492 ctl_set_invalid_opcode(ctsio); 10493 mtx_unlock(&ctl_softc->ctl_lock); 10494 ctl_done((union ctl_io *)ctsio); 10495 goto bailout; 10496 } 10497 break; 10498 default: 10499 printf("Unsupported CTL LUN type %d\n", 10500 lun->be_lun->lun_type); 10501 panic("Unsupported CTL LUN type %d\n", 10502 lun->be_lun->lun_type); 10503 break; /* NOTREACHED */ 10504 } 10505 } 10506 10507 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10508 10509 /* 10510 * If we've got a request sense, it'll clear the contingent 10511 * allegiance condition. Otherwise, if we have a CA condition for 10512 * this initiator, clear it, because it sent down a command other 10513 * than request sense. 10514 */ 10515 if ((opcode != REQUEST_SENSE) 10516 && (ctl_is_set(lun->have_ca, initidx))) 10517 ctl_clear_mask(lun->have_ca, initidx); 10518 10519 /* 10520 * If the command has this flag set, it handles its own unit 10521 * attention reporting, we shouldn't do anything. Otherwise we 10522 * check for any pending unit attentions, and send them back to the 10523 * initiator. We only do this when a command initially comes in, 10524 * not when we pull it off the blocked queue. 10525 * 10526 * According to SAM-3, section 5.3.2, the order that things get 10527 * presented back to the host is basically unit attentions caused 10528 * by some sort of reset event, busy status, reservation conflicts 10529 * or task set full, and finally any other status. 10530 * 10531 * One issue here is that some of the unit attentions we report 10532 * don't fall into the "reset" category (e.g. "reported luns data 10533 * has changed"). So reporting it here, before the reservation 10534 * check, may be technically wrong. I guess the only thing to do 10535 * would be to check for and report the reset events here, and then 10536 * check for the other unit attention types after we check for a 10537 * reservation conflict. 10538 * 10539 * XXX KDM need to fix this 10540 */ 10541 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10542 ctl_ua_type ua_type; 10543 10544 ua_type = lun->pending_sense[initidx].ua_pending; 10545 if (ua_type != CTL_UA_NONE) { 10546 scsi_sense_data_type sense_format; 10547 10548 if (lun != NULL) 10549 sense_format = (lun->flags & 10550 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 10551 SSD_TYPE_FIXED; 10552 else 10553 sense_format = SSD_TYPE_FIXED; 10554 10555 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10556 sense_format); 10557 if (ua_type != CTL_UA_NONE) { 10558 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10559 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10560 CTL_AUTOSENSE; 10561 ctsio->sense_len = SSD_FULL_SIZE; 10562 lun->pending_sense[initidx].ua_pending &= 10563 ~ua_type; 10564 mtx_unlock(&ctl_softc->ctl_lock); 10565 ctl_done((union ctl_io *)ctsio); 10566 goto bailout; 10567 } 10568 } 10569 } 10570 10571 10572 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10573 mtx_unlock(&ctl_softc->ctl_lock); 10574 ctl_done((union ctl_io *)ctsio); 10575 goto bailout; 10576 } 10577 10578 /* 10579 * XXX CHD this is where we want to send IO to other side if 10580 * this LUN is secondary on this SC. We will need to make a copy 10581 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10582 * the copy we send as FROM_OTHER. 10583 * We also need to stuff the address of the original IO so we can 10584 * find it easily. Something similar will need be done on the other 10585 * side so when we are done we can find the copy. 10586 */ 10587 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10588 union ctl_ha_msg msg_info; 10589 int isc_retval; 10590 10591 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10592 10593 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10594 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10595#if 0 10596 printf("1. ctsio %p\n", ctsio); 10597#endif 10598 msg_info.hdr.serializing_sc = NULL; 10599 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10600 msg_info.scsi.tag_num = ctsio->tag_num; 10601 msg_info.scsi.tag_type = ctsio->tag_type; 10602 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10603 10604 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10605 10606 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10607 (void *)&msg_info, sizeof(msg_info), 0)) > 10608 CTL_HA_STATUS_SUCCESS) { 10609 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10610 isc_retval); 10611 printf("CTL:opcode is %x\n",opcode); 10612 } else { 10613#if 0 10614 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10615#endif 10616 } 10617 10618 /* 10619 * XXX KDM this I/O is off the incoming queue, but hasn't 10620 * been inserted on any other queue. We may need to come 10621 * up with a holding queue while we wait for serialization 10622 * so that we have an idea of what we're waiting for from 10623 * the other side. 10624 */ 10625 goto bailout_unlock; 10626 } 10627 10628 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10629 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10630 ctl_ooaq, ooa_links))) { 10631 case CTL_ACTION_BLOCK: 10632 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10633 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10634 blocked_links); 10635 goto bailout_unlock; 10636 break; /* NOTREACHED */ 10637 case CTL_ACTION_PASS: 10638 case CTL_ACTION_SKIP: 10639 goto queue_rtr; 10640 break; /* NOTREACHED */ 10641 case CTL_ACTION_OVERLAP: 10642 ctl_set_overlapped_cmd(ctsio); 10643 mtx_unlock(&ctl_softc->ctl_lock); 10644 ctl_done((union ctl_io *)ctsio); 10645 goto bailout; 10646 break; /* NOTREACHED */ 10647 case CTL_ACTION_OVERLAP_TAG: 10648 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10649 mtx_unlock(&ctl_softc->ctl_lock); 10650 ctl_done((union ctl_io *)ctsio); 10651 goto bailout; 10652 break; /* NOTREACHED */ 10653 case CTL_ACTION_ERROR: 10654 default: 10655 ctl_set_internal_failure(ctsio, 10656 /*sks_valid*/ 0, 10657 /*retry_count*/ 0); 10658 mtx_unlock(&ctl_softc->ctl_lock); 10659 ctl_done((union ctl_io *)ctsio); 10660 goto bailout; 10661 break; /* NOTREACHED */ 10662 } 10663 10664 goto bailout_unlock; 10665 10666queue_rtr: 10667 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10668 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10669 10670bailout_unlock: 10671 mtx_unlock(&ctl_softc->ctl_lock); 10672 10673bailout: 10674 return (retval); 10675} 10676 10677static int 10678ctl_scsiio(struct ctl_scsiio *ctsio) 10679{ 10680 int retval; 10681 struct ctl_cmd_entry *entry; 10682 10683 retval = CTL_RETVAL_COMPLETE; 10684 10685 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10686 10687 entry = &ctl_cmd_table[ctsio->cdb[0]]; 10688 10689 /* 10690 * If this I/O has been aborted, just send it straight to 10691 * ctl_done() without executing it. 10692 */ 10693 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 10694 ctl_done((union ctl_io *)ctsio); 10695 goto bailout; 10696 } 10697 10698 /* 10699 * All the checks should have been handled by ctl_scsiio_precheck(). 10700 * We should be clear now to just execute the I/O. 10701 */ 10702 retval = entry->execute(ctsio); 10703 10704bailout: 10705 return (retval); 10706} 10707 10708/* 10709 * Since we only implement one target right now, a bus reset simply resets 10710 * our single target. 10711 */ 10712static int 10713ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 10714{ 10715 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 10716} 10717 10718static int 10719ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 10720 ctl_ua_type ua_type) 10721{ 10722 struct ctl_lun *lun; 10723 int retval; 10724 10725 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 10726 union ctl_ha_msg msg_info; 10727 10728 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10729 msg_info.hdr.nexus = io->io_hdr.nexus; 10730 if (ua_type==CTL_UA_TARG_RESET) 10731 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 10732 else 10733 msg_info.task.task_action = CTL_TASK_BUS_RESET; 10734 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 10735 msg_info.hdr.original_sc = NULL; 10736 msg_info.hdr.serializing_sc = NULL; 10737 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10738 (void *)&msg_info, sizeof(msg_info), 0)) { 10739 } 10740 } 10741 retval = 0; 10742 10743 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 10744 retval += ctl_lun_reset(lun, io, ua_type); 10745 10746 return (retval); 10747} 10748 10749/* 10750 * The LUN should always be set. The I/O is optional, and is used to 10751 * distinguish between I/Os sent by this initiator, and by other 10752 * initiators. We set unit attention for initiators other than this one. 10753 * SAM-3 is vague on this point. It does say that a unit attention should 10754 * be established for other initiators when a LUN is reset (see section 10755 * 5.7.3), but it doesn't specifically say that the unit attention should 10756 * be established for this particular initiator when a LUN is reset. Here 10757 * is the relevant text, from SAM-3 rev 8: 10758 * 10759 * 5.7.2 When a SCSI initiator port aborts its own tasks 10760 * 10761 * When a SCSI initiator port causes its own task(s) to be aborted, no 10762 * notification that the task(s) have been aborted shall be returned to 10763 * the SCSI initiator port other than the completion response for the 10764 * command or task management function action that caused the task(s) to 10765 * be aborted and notification(s) associated with related effects of the 10766 * action (e.g., a reset unit attention condition). 10767 * 10768 * XXX KDM for now, we're setting unit attention for all initiators. 10769 */ 10770static int 10771ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 10772{ 10773 union ctl_io *xio; 10774#if 0 10775 uint32_t initindex; 10776#endif 10777 int i; 10778 10779 /* 10780 * Run through the OOA queue and abort each I/O. 10781 */ 10782#if 0 10783 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10784#endif 10785 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10786 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10787 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10788 } 10789 10790 /* 10791 * This version sets unit attention for every 10792 */ 10793#if 0 10794 initindex = ctl_get_initindex(&io->io_hdr.nexus); 10795 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10796 if (initindex == i) 10797 continue; 10798 lun->pending_sense[i].ua_pending |= ua_type; 10799 } 10800#endif 10801 10802 /* 10803 * A reset (any kind, really) clears reservations established with 10804 * RESERVE/RELEASE. It does not clear reservations established 10805 * with PERSISTENT RESERVE OUT, but we don't support that at the 10806 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 10807 * reservations made with the RESERVE/RELEASE commands, because 10808 * those commands are obsolete in SPC-3. 10809 */ 10810 lun->flags &= ~CTL_LUN_RESERVED; 10811 10812 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10813 ctl_clear_mask(lun->have_ca, i); 10814 lun->pending_sense[i].ua_pending |= ua_type; 10815 } 10816 10817 return (0); 10818} 10819 10820static int 10821ctl_abort_task(union ctl_io *io) 10822{ 10823 union ctl_io *xio; 10824 struct ctl_lun *lun; 10825 struct ctl_softc *ctl_softc; 10826#if 0 10827 struct sbuf sb; 10828 char printbuf[128]; 10829#endif 10830 int found; 10831 uint32_t targ_lun; 10832 10833 ctl_softc = control_softc; 10834 found = 0; 10835 10836 /* 10837 * Look up the LUN. 10838 */ 10839 targ_lun = io->io_hdr.nexus.targ_lun; 10840 if (io->io_hdr.nexus.lun_map_fn != NULL) 10841 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 10842 if ((targ_lun < CTL_MAX_LUNS) 10843 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 10844 lun = ctl_softc->ctl_luns[targ_lun]; 10845 else 10846 goto bailout; 10847 10848#if 0 10849 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 10850 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 10851#endif 10852 10853 /* 10854 * Run through the OOA queue and attempt to find the given I/O. 10855 * The target port, initiator ID, tag type and tag number have to 10856 * match the values that we got from the initiator. If we have an 10857 * untagged command to abort, simply abort the first untagged command 10858 * we come to. We only allow one untagged command at a time of course. 10859 */ 10860#if 0 10861 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10862#endif 10863 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10864 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10865#if 0 10866 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 10867 10868 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 10869 lun->lun, xio->scsiio.tag_num, 10870 xio->scsiio.tag_type, 10871 (xio->io_hdr.blocked_links.tqe_prev 10872 == NULL) ? "" : " BLOCKED", 10873 (xio->io_hdr.flags & 10874 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 10875 (xio->io_hdr.flags & 10876 CTL_FLAG_ABORT) ? " ABORT" : "", 10877 (xio->io_hdr.flags & 10878 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 10879 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 10880 sbuf_finish(&sb); 10881 printf("%s\n", sbuf_data(&sb)); 10882#endif 10883 10884 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 10885 && (xio->io_hdr.nexus.initid.id == 10886 io->io_hdr.nexus.initid.id)) { 10887 /* 10888 * If the abort says that the task is untagged, the 10889 * task in the queue must be untagged. Otherwise, 10890 * we just check to see whether the tag numbers 10891 * match. This is because the QLogic firmware 10892 * doesn't pass back the tag type in an abort 10893 * request. 10894 */ 10895#if 0 10896 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 10897 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 10898 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 10899#endif 10900 /* 10901 * XXX KDM we've got problems with FC, because it 10902 * doesn't send down a tag type with aborts. So we 10903 * can only really go by the tag number... 10904 * This may cause problems with parallel SCSI. 10905 * Need to figure that out!! 10906 */ 10907 if (xio->scsiio.tag_num == io->taskio.tag_num) { 10908 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10909 found = 1; 10910 if ((io->io_hdr.flags & 10911 CTL_FLAG_FROM_OTHER_SC) == 0 && 10912 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 10913 union ctl_ha_msg msg_info; 10914 10915 io->io_hdr.flags |= 10916 CTL_FLAG_SENT_2OTHER_SC; 10917 msg_info.hdr.nexus = io->io_hdr.nexus; 10918 msg_info.task.task_action = 10919 CTL_TASK_ABORT_TASK; 10920 msg_info.task.tag_num = 10921 io->taskio.tag_num; 10922 msg_info.task.tag_type = 10923 io->taskio.tag_type; 10924 msg_info.hdr.msg_type = 10925 CTL_MSG_MANAGE_TASKS; 10926 msg_info.hdr.original_sc = NULL; 10927 msg_info.hdr.serializing_sc = NULL; 10928#if 0 10929 printf("Sent Abort to other side\n"); 10930#endif 10931 if (CTL_HA_STATUS_SUCCESS != 10932 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10933 (void *)&msg_info, 10934 sizeof(msg_info), 0)) { 10935 } 10936 } 10937#if 0 10938 printf("ctl_abort_task: found I/O to abort\n"); 10939#endif 10940 break; 10941 } 10942 } 10943 } 10944 10945bailout: 10946 10947 if (found == 0) { 10948 /* 10949 * This isn't really an error. It's entirely possible for 10950 * the abort and command completion to cross on the wire. 10951 * This is more of an informative/diagnostic error. 10952 */ 10953#if 0 10954 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 10955 "%d:%d:%d:%d tag %d type %d\n", 10956 io->io_hdr.nexus.initid.id, 10957 io->io_hdr.nexus.targ_port, 10958 io->io_hdr.nexus.targ_target.id, 10959 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 10960 io->taskio.tag_type); 10961#endif 10962 return (1); 10963 } else 10964 return (0); 10965} 10966 10967/* 10968 * This routine cannot block! It must be callable from an interrupt 10969 * handler as well as from the work thread. 10970 */ 10971static void 10972ctl_run_task_queue(struct ctl_softc *ctl_softc) 10973{ 10974 union ctl_io *io, *next_io; 10975 10976 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 10977 10978 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 10979 10980 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 10981 io != NULL; io = next_io) { 10982 int retval; 10983 const char *task_desc; 10984 10985 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10986 10987 retval = 0; 10988 10989 switch (io->io_hdr.io_type) { 10990 case CTL_IO_TASK: { 10991 task_desc = ctl_scsi_task_string(&io->taskio); 10992 if (task_desc != NULL) { 10993#ifdef NEEDTOPORT 10994 csevent_log(CSC_CTL | CSC_SHELF_SW | 10995 CTL_TASK_REPORT, 10996 csevent_LogType_Trace, 10997 csevent_Severity_Information, 10998 csevent_AlertLevel_Green, 10999 csevent_FRU_Firmware, 11000 csevent_FRU_Unknown, 11001 "CTL: received task: %s",task_desc); 11002#endif 11003 } else { 11004#ifdef NEEDTOPORT 11005 csevent_log(CSC_CTL | CSC_SHELF_SW | 11006 CTL_TASK_REPORT, 11007 csevent_LogType_Trace, 11008 csevent_Severity_Information, 11009 csevent_AlertLevel_Green, 11010 csevent_FRU_Firmware, 11011 csevent_FRU_Unknown, 11012 "CTL: received unknown task " 11013 "type: %d (%#x)", 11014 io->taskio.task_action, 11015 io->taskio.task_action); 11016#endif 11017 } 11018 switch (io->taskio.task_action) { 11019 case CTL_TASK_ABORT_TASK: 11020 retval = ctl_abort_task(io); 11021 break; 11022 case CTL_TASK_ABORT_TASK_SET: 11023 break; 11024 case CTL_TASK_CLEAR_ACA: 11025 break; 11026 case CTL_TASK_CLEAR_TASK_SET: 11027 break; 11028 case CTL_TASK_LUN_RESET: { 11029 struct ctl_lun *lun; 11030 uint32_t targ_lun; 11031 int retval; 11032 11033 targ_lun = io->io_hdr.nexus.targ_lun; 11034 if (io->io_hdr.nexus.lun_map_fn != NULL) 11035 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11036 11037 if ((targ_lun < CTL_MAX_LUNS) 11038 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11039 lun = ctl_softc->ctl_luns[targ_lun]; 11040 else { 11041 retval = 1; 11042 break; 11043 } 11044 11045 if (!(io->io_hdr.flags & 11046 CTL_FLAG_FROM_OTHER_SC)) { 11047 union ctl_ha_msg msg_info; 11048 11049 io->io_hdr.flags |= 11050 CTL_FLAG_SENT_2OTHER_SC; 11051 msg_info.hdr.msg_type = 11052 CTL_MSG_MANAGE_TASKS; 11053 msg_info.hdr.nexus = io->io_hdr.nexus; 11054 msg_info.task.task_action = 11055 CTL_TASK_LUN_RESET; 11056 msg_info.hdr.original_sc = NULL; 11057 msg_info.hdr.serializing_sc = NULL; 11058 if (CTL_HA_STATUS_SUCCESS != 11059 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11060 (void *)&msg_info, 11061 sizeof(msg_info), 0)) { 11062 } 11063 } 11064 11065 retval = ctl_lun_reset(lun, io, 11066 CTL_UA_LUN_RESET); 11067 break; 11068 } 11069 case CTL_TASK_TARGET_RESET: 11070 retval = ctl_target_reset(ctl_softc, io, 11071 CTL_UA_TARG_RESET); 11072 break; 11073 case CTL_TASK_BUS_RESET: 11074 retval = ctl_bus_reset(ctl_softc, io); 11075 break; 11076 case CTL_TASK_PORT_LOGIN: 11077 break; 11078 case CTL_TASK_PORT_LOGOUT: 11079 break; 11080 default: 11081 printf("ctl_run_task_queue: got unknown task " 11082 "management event %d\n", 11083 io->taskio.task_action); 11084 break; 11085 } 11086 if (retval == 0) 11087 io->io_hdr.status = CTL_SUCCESS; 11088 else 11089 io->io_hdr.status = CTL_ERROR; 11090 11091 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11092 ctl_io_hdr, links); 11093 /* 11094 * This will queue this I/O to the done queue, but the 11095 * work thread won't be able to process it until we 11096 * return and the lock is released. 11097 */ 11098 ctl_done_lock(io, /*have_lock*/ 1); 11099 break; 11100 } 11101 default: { 11102 11103 printf("%s: invalid I/O type %d msg %d cdb %x" 11104 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11105 __func__, io->io_hdr.io_type, 11106 io->io_hdr.msg_type, io->scsiio.cdb[0], 11107 (uintmax_t)io->io_hdr.nexus.initid.id, 11108 io->io_hdr.nexus.targ_port, 11109 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11110 io->io_hdr.nexus.targ_lun /* XXX */, 11111 (io->io_hdr.io_type == CTL_IO_TASK) ? 11112 io->taskio.tag_num : io->scsiio.tag_num); 11113 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11114 ctl_io_hdr, links); 11115 ctl_free_io(io); 11116 break; 11117 } 11118 } 11119 } 11120 11121 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11122} 11123 11124/* 11125 * For HA operation. Handle commands that come in from the other 11126 * controller. 11127 */ 11128static void 11129ctl_handle_isc(union ctl_io *io) 11130{ 11131 int free_io; 11132 struct ctl_lun *lun; 11133 struct ctl_softc *ctl_softc; 11134 uint32_t targ_lun; 11135 11136 ctl_softc = control_softc; 11137 11138 targ_lun = io->io_hdr.nexus.targ_lun; 11139 if (io->io_hdr.nexus.lun_map_fn != NULL) 11140 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11141 lun = ctl_softc->ctl_luns[targ_lun]; 11142 11143 switch (io->io_hdr.msg_type) { 11144 case CTL_MSG_SERIALIZE: 11145 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11146 /*have_lock*/ 0); 11147 break; 11148 case CTL_MSG_R2R: { 11149 uint8_t opcode; 11150 struct ctl_cmd_entry *entry; 11151 11152 /* 11153 * This is only used in SER_ONLY mode. 11154 */ 11155 free_io = 0; 11156 opcode = io->scsiio.cdb[0]; 11157 entry = &ctl_cmd_table[opcode]; 11158 mtx_lock(&ctl_softc->ctl_lock); 11159 if (ctl_scsiio_lun_check(ctl_softc, lun, 11160 entry, (struct ctl_scsiio *)io) != 0) { 11161 ctl_done_lock(io, /*have_lock*/ 1); 11162 mtx_unlock(&ctl_softc->ctl_lock); 11163 break; 11164 } 11165 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11166 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11167 &io->io_hdr, links); 11168 mtx_unlock(&ctl_softc->ctl_lock); 11169 break; 11170 } 11171 case CTL_MSG_FINISH_IO: 11172 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11173 free_io = 0; 11174 ctl_done_lock(io, /*have_lock*/ 0); 11175 } else { 11176 free_io = 1; 11177 mtx_lock(&ctl_softc->ctl_lock); 11178 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11179 ooa_links); 11180 STAILQ_REMOVE(&ctl_softc->task_queue, 11181 &io->io_hdr, ctl_io_hdr, links); 11182 ctl_check_blocked(lun); 11183 mtx_unlock(&ctl_softc->ctl_lock); 11184 } 11185 break; 11186 case CTL_MSG_PERS_ACTION: 11187 ctl_hndl_per_res_out_on_other_sc( 11188 (union ctl_ha_msg *)&io->presio.pr_msg); 11189 free_io = 1; 11190 break; 11191 case CTL_MSG_BAD_JUJU: 11192 free_io = 0; 11193 ctl_done_lock(io, /*have_lock*/ 0); 11194 break; 11195 case CTL_MSG_DATAMOVE: 11196 /* Only used in XFER mode */ 11197 free_io = 0; 11198 ctl_datamove_remote(io); 11199 break; 11200 case CTL_MSG_DATAMOVE_DONE: 11201 /* Only used in XFER mode */ 11202 free_io = 0; 11203 io->scsiio.be_move_done(io); 11204 break; 11205 default: 11206 free_io = 1; 11207 printf("%s: Invalid message type %d\n", 11208 __func__, io->io_hdr.msg_type); 11209 break; 11210 } 11211 if (free_io) 11212 ctl_free_io(io); 11213 11214} 11215 11216 11217/* 11218 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11219 * there is no match. 11220 */ 11221static ctl_lun_error_pattern 11222ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11223{ 11224 struct ctl_cmd_entry *entry; 11225 ctl_lun_error_pattern filtered_pattern, pattern; 11226 uint8_t opcode; 11227 11228 pattern = desc->error_pattern; 11229 11230 /* 11231 * XXX KDM we need more data passed into this function to match a 11232 * custom pattern, and we actually need to implement custom pattern 11233 * matching. 11234 */ 11235 if (pattern & CTL_LUN_PAT_CMD) 11236 return (CTL_LUN_PAT_CMD); 11237 11238 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11239 return (CTL_LUN_PAT_ANY); 11240 11241 opcode = ctsio->cdb[0]; 11242 entry = &ctl_cmd_table[opcode]; 11243 11244 filtered_pattern = entry->pattern & pattern; 11245 11246 /* 11247 * If the user requested specific flags in the pattern (e.g. 11248 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11249 * flags. 11250 * 11251 * If the user did not specify any flags, it doesn't matter whether 11252 * or not the command supports the flags. 11253 */ 11254 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11255 (pattern & ~CTL_LUN_PAT_MASK)) 11256 return (CTL_LUN_PAT_NONE); 11257 11258 /* 11259 * If the user asked for a range check, see if the requested LBA 11260 * range overlaps with this command's LBA range. 11261 */ 11262 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11263 uint64_t lba1; 11264 uint32_t len1; 11265 ctl_action action; 11266 int retval; 11267 11268 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11269 if (retval != 0) 11270 return (CTL_LUN_PAT_NONE); 11271 11272 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11273 desc->lba_range.len); 11274 /* 11275 * A "pass" means that the LBA ranges don't overlap, so 11276 * this doesn't match the user's range criteria. 11277 */ 11278 if (action == CTL_ACTION_PASS) 11279 return (CTL_LUN_PAT_NONE); 11280 } 11281 11282 return (filtered_pattern); 11283} 11284 11285static void 11286ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11287{ 11288 struct ctl_error_desc *desc, *desc2; 11289 11290 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 11291 11292 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11293 ctl_lun_error_pattern pattern; 11294 /* 11295 * Check to see whether this particular command matches 11296 * the pattern in the descriptor. 11297 */ 11298 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11299 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11300 continue; 11301 11302 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11303 case CTL_LUN_INJ_ABORTED: 11304 ctl_set_aborted(&io->scsiio); 11305 break; 11306 case CTL_LUN_INJ_MEDIUM_ERR: 11307 ctl_set_medium_error(&io->scsiio); 11308 break; 11309 case CTL_LUN_INJ_UA: 11310 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11311 * OCCURRED */ 11312 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11313 break; 11314 case CTL_LUN_INJ_CUSTOM: 11315 /* 11316 * We're assuming the user knows what he is doing. 11317 * Just copy the sense information without doing 11318 * checks. 11319 */ 11320 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11321 ctl_min(sizeof(desc->custom_sense), 11322 sizeof(io->scsiio.sense_data))); 11323 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11324 io->scsiio.sense_len = SSD_FULL_SIZE; 11325 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11326 break; 11327 case CTL_LUN_INJ_NONE: 11328 default: 11329 /* 11330 * If this is an error injection type we don't know 11331 * about, clear the continuous flag (if it is set) 11332 * so it will get deleted below. 11333 */ 11334 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11335 break; 11336 } 11337 /* 11338 * By default, each error injection action is a one-shot 11339 */ 11340 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11341 continue; 11342 11343 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11344 11345 free(desc, M_CTL); 11346 } 11347} 11348 11349#ifdef CTL_IO_DELAY 11350static void 11351ctl_datamove_timer_wakeup(void *arg) 11352{ 11353 union ctl_io *io; 11354 11355 io = (union ctl_io *)arg; 11356 11357 ctl_datamove(io); 11358} 11359#endif /* CTL_IO_DELAY */ 11360 11361void 11362ctl_datamove(union ctl_io *io) 11363{ 11364 void (*fe_datamove)(union ctl_io *io); 11365 11366 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11367 11368 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11369 11370#ifdef CTL_TIME_IO 11371 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11372 char str[256]; 11373 char path_str[64]; 11374 struct sbuf sb; 11375 11376 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11377 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11378 11379 sbuf_cat(&sb, path_str); 11380 switch (io->io_hdr.io_type) { 11381 case CTL_IO_SCSI: 11382 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11383 sbuf_printf(&sb, "\n"); 11384 sbuf_cat(&sb, path_str); 11385 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11386 io->scsiio.tag_num, io->scsiio.tag_type); 11387 break; 11388 case CTL_IO_TASK: 11389 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11390 "Tag Type: %d\n", io->taskio.task_action, 11391 io->taskio.tag_num, io->taskio.tag_type); 11392 break; 11393 default: 11394 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11395 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11396 break; 11397 } 11398 sbuf_cat(&sb, path_str); 11399 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11400 (intmax_t)time_uptime - io->io_hdr.start_time); 11401 sbuf_finish(&sb); 11402 printf("%s", sbuf_data(&sb)); 11403 } 11404#endif /* CTL_TIME_IO */ 11405 11406 mtx_lock(&control_softc->ctl_lock); 11407#ifdef CTL_IO_DELAY 11408 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11409 struct ctl_lun *lun; 11410 11411 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11412 11413 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11414 } else { 11415 struct ctl_lun *lun; 11416 11417 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11418 if ((lun != NULL) 11419 && (lun->delay_info.datamove_delay > 0)) { 11420 struct callout *callout; 11421 11422 callout = (struct callout *)&io->io_hdr.timer_bytes; 11423 callout_init(callout, /*mpsafe*/ 1); 11424 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11425 callout_reset(callout, 11426 lun->delay_info.datamove_delay * hz, 11427 ctl_datamove_timer_wakeup, io); 11428 if (lun->delay_info.datamove_type == 11429 CTL_DELAY_TYPE_ONESHOT) 11430 lun->delay_info.datamove_delay = 0; 11431 mtx_unlock(&control_softc->ctl_lock); 11432 return; 11433 } 11434 } 11435#endif 11436 /* 11437 * If we have any pending task management commands, process them 11438 * first. This is necessary to eliminate a race condition with the 11439 * FETD: 11440 * 11441 * - FETD submits a task management command, like an abort. 11442 * - Back end calls fe_datamove() to move the data for the aborted 11443 * command. The FETD can't really accept it, but if it did, it 11444 * would end up transmitting data for a command that the initiator 11445 * told us to abort. 11446 * 11447 * We close the race by processing all pending task management 11448 * commands here (we can't block!), and then check this I/O to see 11449 * if it has been aborted. If so, return it to the back end with 11450 * bad status, so the back end can say return an error to the back end 11451 * and then when the back end returns an error, we can return the 11452 * aborted command to the FETD, so it can clean up its resources. 11453 */ 11454 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11455 ctl_run_task_queue(control_softc); 11456 11457 /* 11458 * This command has been aborted. Set the port status, so we fail 11459 * the data move. 11460 */ 11461 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11462 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11463 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11464 io->io_hdr.nexus.targ_port, 11465 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11466 io->io_hdr.nexus.targ_lun); 11467 io->io_hdr.status = CTL_CMD_ABORTED; 11468 io->io_hdr.port_status = 31337; 11469 mtx_unlock(&control_softc->ctl_lock); 11470 /* 11471 * Note that the backend, in this case, will get the 11472 * callback in its context. In other cases it may get 11473 * called in the frontend's interrupt thread context. 11474 */ 11475 io->scsiio.be_move_done(io); 11476 return; 11477 } 11478 11479 /* 11480 * If we're in XFER mode and this I/O is from the other shelf 11481 * controller, we need to send the DMA to the other side to 11482 * actually transfer the data to/from the host. In serialize only 11483 * mode the transfer happens below CTL and ctl_datamove() is only 11484 * called on the machine that originally received the I/O. 11485 */ 11486 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11487 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11488 union ctl_ha_msg msg; 11489 uint32_t sg_entries_sent; 11490 int do_sg_copy; 11491 int i; 11492 11493 memset(&msg, 0, sizeof(msg)); 11494 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11495 msg.hdr.original_sc = io->io_hdr.original_sc; 11496 msg.hdr.serializing_sc = io; 11497 msg.hdr.nexus = io->io_hdr.nexus; 11498 msg.dt.flags = io->io_hdr.flags; 11499 /* 11500 * We convert everything into a S/G list here. We can't 11501 * pass by reference, only by value between controllers. 11502 * So we can't pass a pointer to the S/G list, only as many 11503 * S/G entries as we can fit in here. If it's possible for 11504 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11505 * then we need to break this up into multiple transfers. 11506 */ 11507 if (io->scsiio.kern_sg_entries == 0) { 11508 msg.dt.kern_sg_entries = 1; 11509 /* 11510 * If this is in cached memory, flush the cache 11511 * before we send the DMA request to the other 11512 * controller. We want to do this in either the 11513 * read or the write case. The read case is 11514 * straightforward. In the write case, we want to 11515 * make sure nothing is in the local cache that 11516 * could overwrite the DMAed data. 11517 */ 11518 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11519 /* 11520 * XXX KDM use bus_dmamap_sync() here. 11521 */ 11522 } 11523 11524 /* 11525 * Convert to a physical address if this is a 11526 * virtual address. 11527 */ 11528 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11529 msg.dt.sg_list[0].addr = 11530 io->scsiio.kern_data_ptr; 11531 } else { 11532 /* 11533 * XXX KDM use busdma here! 11534 */ 11535#if 0 11536 msg.dt.sg_list[0].addr = (void *) 11537 vtophys(io->scsiio.kern_data_ptr); 11538#endif 11539 } 11540 11541 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11542 do_sg_copy = 0; 11543 } else { 11544 struct ctl_sg_entry *sgl; 11545 11546 do_sg_copy = 1; 11547 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11548 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11549 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11550 /* 11551 * XXX KDM use bus_dmamap_sync() here. 11552 */ 11553 } 11554 } 11555 11556 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11557 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11558 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11559 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11560 msg.dt.sg_sequence = 0; 11561 11562 /* 11563 * Loop until we've sent all of the S/G entries. On the 11564 * other end, we'll recompose these S/G entries into one 11565 * contiguous list before passing it to the 11566 */ 11567 for (sg_entries_sent = 0; sg_entries_sent < 11568 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11569 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11570 sizeof(msg.dt.sg_list[0])), 11571 msg.dt.kern_sg_entries - sg_entries_sent); 11572 11573 if (do_sg_copy != 0) { 11574 struct ctl_sg_entry *sgl; 11575 int j; 11576 11577 sgl = (struct ctl_sg_entry *) 11578 io->scsiio.kern_data_ptr; 11579 /* 11580 * If this is in cached memory, flush the cache 11581 * before we send the DMA request to the other 11582 * controller. We want to do this in either 11583 * the * read or the write case. The read 11584 * case is straightforward. In the write 11585 * case, we want to make sure nothing is 11586 * in the local cache that could overwrite 11587 * the DMAed data. 11588 */ 11589 11590 for (i = sg_entries_sent, j = 0; 11591 i < msg.dt.cur_sg_entries; i++, j++) { 11592 if ((io->io_hdr.flags & 11593 CTL_FLAG_NO_DATASYNC) == 0) { 11594 /* 11595 * XXX KDM use bus_dmamap_sync() 11596 */ 11597 } 11598 if ((io->io_hdr.flags & 11599 CTL_FLAG_BUS_ADDR) == 0) { 11600 /* 11601 * XXX KDM use busdma. 11602 */ 11603#if 0 11604 msg.dt.sg_list[j].addr =(void *) 11605 vtophys(sgl[i].addr); 11606#endif 11607 } else { 11608 msg.dt.sg_list[j].addr = 11609 sgl[i].addr; 11610 } 11611 msg.dt.sg_list[j].len = sgl[i].len; 11612 } 11613 } 11614 11615 sg_entries_sent += msg.dt.cur_sg_entries; 11616 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11617 msg.dt.sg_last = 1; 11618 else 11619 msg.dt.sg_last = 0; 11620 11621 /* 11622 * XXX KDM drop and reacquire the lock here? 11623 */ 11624 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11625 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11626 /* 11627 * XXX do something here. 11628 */ 11629 } 11630 11631 msg.dt.sent_sg_entries = sg_entries_sent; 11632 } 11633 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11634 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11635 ctl_failover_io(io, /*have_lock*/ 1); 11636 11637 } else { 11638 11639 /* 11640 * Lookup the fe_datamove() function for this particular 11641 * front end. 11642 */ 11643 fe_datamove = 11644 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11645 mtx_unlock(&control_softc->ctl_lock); 11646 11647 fe_datamove(io); 11648 } 11649} 11650 11651static void 11652ctl_send_datamove_done(union ctl_io *io, int have_lock) 11653{ 11654 union ctl_ha_msg msg; 11655 int isc_status; 11656 11657 memset(&msg, 0, sizeof(msg)); 11658 11659 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11660 msg.hdr.original_sc = io; 11661 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11662 msg.hdr.nexus = io->io_hdr.nexus; 11663 msg.hdr.status = io->io_hdr.status; 11664 msg.scsi.tag_num = io->scsiio.tag_num; 11665 msg.scsi.tag_type = io->scsiio.tag_type; 11666 msg.scsi.scsi_status = io->scsiio.scsi_status; 11667 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11668 sizeof(io->scsiio.sense_data)); 11669 msg.scsi.sense_len = io->scsiio.sense_len; 11670 msg.scsi.sense_residual = io->scsiio.sense_residual; 11671 msg.scsi.fetd_status = io->io_hdr.port_status; 11672 msg.scsi.residual = io->scsiio.residual; 11673 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11674 11675 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11676 ctl_failover_io(io, /*have_lock*/ have_lock); 11677 return; 11678 } 11679 11680 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11681 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11682 /* XXX do something if this fails */ 11683 } 11684 11685} 11686 11687/* 11688 * The DMA to the remote side is done, now we need to tell the other side 11689 * we're done so it can continue with its data movement. 11690 */ 11691static void 11692ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 11693{ 11694 union ctl_io *io; 11695 11696 io = rq->context; 11697 11698 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11699 printf("%s: ISC DMA write failed with error %d", __func__, 11700 rq->ret); 11701 ctl_set_internal_failure(&io->scsiio, 11702 /*sks_valid*/ 1, 11703 /*retry_count*/ rq->ret); 11704 } 11705 11706 ctl_dt_req_free(rq); 11707 11708 /* 11709 * In this case, we had to malloc the memory locally. Free it. 11710 */ 11711 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11712 int i; 11713 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11714 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11715 } 11716 /* 11717 * The data is in local and remote memory, so now we need to send 11718 * status (good or back) back to the other side. 11719 */ 11720 ctl_send_datamove_done(io, /*have_lock*/ 0); 11721} 11722 11723/* 11724 * We've moved the data from the host/controller into local memory. Now we 11725 * need to push it over to the remote controller's memory. 11726 */ 11727static int 11728ctl_datamove_remote_dm_write_cb(union ctl_io *io) 11729{ 11730 int retval; 11731 11732 retval = 0; 11733 11734 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 11735 ctl_datamove_remote_write_cb); 11736 11737 return (retval); 11738} 11739 11740static void 11741ctl_datamove_remote_write(union ctl_io *io) 11742{ 11743 int retval; 11744 void (*fe_datamove)(union ctl_io *io); 11745 11746 /* 11747 * - Get the data from the host/HBA into local memory. 11748 * - DMA memory from the local controller to the remote controller. 11749 * - Send status back to the remote controller. 11750 */ 11751 11752 retval = ctl_datamove_remote_sgl_setup(io); 11753 if (retval != 0) 11754 return; 11755 11756 /* Switch the pointer over so the FETD knows what to do */ 11757 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11758 11759 /* 11760 * Use a custom move done callback, since we need to send completion 11761 * back to the other controller, not to the backend on this side. 11762 */ 11763 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 11764 11765 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11766 11767 fe_datamove(io); 11768 11769 return; 11770 11771} 11772 11773static int 11774ctl_datamove_remote_dm_read_cb(union ctl_io *io) 11775{ 11776#if 0 11777 char str[256]; 11778 char path_str[64]; 11779 struct sbuf sb; 11780#endif 11781 11782 /* 11783 * In this case, we had to malloc the memory locally. Free it. 11784 */ 11785 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11786 int i; 11787 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11788 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11789 } 11790 11791#if 0 11792 scsi_path_string(io, path_str, sizeof(path_str)); 11793 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11794 sbuf_cat(&sb, path_str); 11795 scsi_command_string(&io->scsiio, NULL, &sb); 11796 sbuf_printf(&sb, "\n"); 11797 sbuf_cat(&sb, path_str); 11798 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11799 io->scsiio.tag_num, io->scsiio.tag_type); 11800 sbuf_cat(&sb, path_str); 11801 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 11802 io->io_hdr.flags, io->io_hdr.status); 11803 sbuf_finish(&sb); 11804 printk("%s", sbuf_data(&sb)); 11805#endif 11806 11807 11808 /* 11809 * The read is done, now we need to send status (good or bad) back 11810 * to the other side. 11811 */ 11812 ctl_send_datamove_done(io, /*have_lock*/ 0); 11813 11814 return (0); 11815} 11816 11817static void 11818ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 11819{ 11820 union ctl_io *io; 11821 void (*fe_datamove)(union ctl_io *io); 11822 11823 io = rq->context; 11824 11825 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11826 printf("%s: ISC DMA read failed with error %d", __func__, 11827 rq->ret); 11828 ctl_set_internal_failure(&io->scsiio, 11829 /*sks_valid*/ 1, 11830 /*retry_count*/ rq->ret); 11831 } 11832 11833 ctl_dt_req_free(rq); 11834 11835 /* Switch the pointer over so the FETD knows what to do */ 11836 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11837 11838 /* 11839 * Use a custom move done callback, since we need to send completion 11840 * back to the other controller, not to the backend on this side. 11841 */ 11842 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 11843 11844 /* XXX KDM add checks like the ones in ctl_datamove? */ 11845 11846 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11847 11848 fe_datamove(io); 11849} 11850 11851static int 11852ctl_datamove_remote_sgl_setup(union ctl_io *io) 11853{ 11854 struct ctl_sg_entry *local_sglist, *remote_sglist; 11855 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 11856 struct ctl_softc *softc; 11857 int retval; 11858 int i; 11859 11860 retval = 0; 11861 softc = control_softc; 11862 11863 local_sglist = io->io_hdr.local_sglist; 11864 local_dma_sglist = io->io_hdr.local_dma_sglist; 11865 remote_sglist = io->io_hdr.remote_sglist; 11866 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11867 11868 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 11869 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 11870 local_sglist[i].len = remote_sglist[i].len; 11871 11872 /* 11873 * XXX Detect the situation where the RS-level I/O 11874 * redirector on the other side has already read the 11875 * data off of the AOR RS on this side, and 11876 * transferred it to remote (mirror) memory on the 11877 * other side. Since we already have the data in 11878 * memory here, we just need to use it. 11879 * 11880 * XXX KDM this can probably be removed once we 11881 * get the cache device code in and take the 11882 * current AOR implementation out. 11883 */ 11884#ifdef NEEDTOPORT 11885 if ((remote_sglist[i].addr >= 11886 (void *)vtophys(softc->mirr->addr)) 11887 && (remote_sglist[i].addr < 11888 ((void *)vtophys(softc->mirr->addr) + 11889 CacheMirrorOffset))) { 11890 local_sglist[i].addr = remote_sglist[i].addr - 11891 CacheMirrorOffset; 11892 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 11893 CTL_FLAG_DATA_IN) 11894 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 11895 } else { 11896 local_sglist[i].addr = remote_sglist[i].addr + 11897 CacheMirrorOffset; 11898 } 11899#endif 11900#if 0 11901 printf("%s: local %p, remote %p, len %d\n", 11902 __func__, local_sglist[i].addr, 11903 remote_sglist[i].addr, local_sglist[i].len); 11904#endif 11905 } 11906 } else { 11907 uint32_t len_to_go; 11908 11909 /* 11910 * In this case, we don't have automatically allocated 11911 * memory for this I/O on this controller. This typically 11912 * happens with internal CTL I/O -- e.g. inquiry, mode 11913 * sense, etc. Anything coming from RAIDCore will have 11914 * a mirror area available. 11915 */ 11916 len_to_go = io->scsiio.kern_data_len; 11917 11918 /* 11919 * Clear the no datasync flag, we have to use malloced 11920 * buffers. 11921 */ 11922 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 11923 11924 /* 11925 * The difficult thing here is that the size of the various 11926 * S/G segments may be different than the size from the 11927 * remote controller. That'll make it harder when DMAing 11928 * the data back to the other side. 11929 */ 11930 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 11931 sizeof(io->io_hdr.remote_sglist[0])) && 11932 (len_to_go > 0); i++) { 11933 local_sglist[i].len = ctl_min(len_to_go, 131072); 11934 CTL_SIZE_8B(local_dma_sglist[i].len, 11935 local_sglist[i].len); 11936 local_sglist[i].addr = 11937 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 11938 11939 local_dma_sglist[i].addr = local_sglist[i].addr; 11940 11941 if (local_sglist[i].addr == NULL) { 11942 int j; 11943 11944 printf("malloc failed for %zd bytes!", 11945 local_dma_sglist[i].len); 11946 for (j = 0; j < i; j++) { 11947 free(local_sglist[j].addr, M_CTL); 11948 } 11949 ctl_set_internal_failure(&io->scsiio, 11950 /*sks_valid*/ 1, 11951 /*retry_count*/ 4857); 11952 retval = 1; 11953 goto bailout_error; 11954 11955 } 11956 /* XXX KDM do we need a sync here? */ 11957 11958 len_to_go -= local_sglist[i].len; 11959 } 11960 /* 11961 * Reset the number of S/G entries accordingly. The 11962 * original number of S/G entries is available in 11963 * rem_sg_entries. 11964 */ 11965 io->scsiio.kern_sg_entries = i; 11966 11967#if 0 11968 printf("%s: kern_sg_entries = %d\n", __func__, 11969 io->scsiio.kern_sg_entries); 11970 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11971 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 11972 local_sglist[i].addr, local_sglist[i].len, 11973 local_dma_sglist[i].len); 11974#endif 11975 } 11976 11977 11978 return (retval); 11979 11980bailout_error: 11981 11982 ctl_send_datamove_done(io, /*have_lock*/ 0); 11983 11984 return (retval); 11985} 11986 11987static int 11988ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 11989 ctl_ha_dt_cb callback) 11990{ 11991 struct ctl_ha_dt_req *rq; 11992 struct ctl_sg_entry *remote_sglist, *local_sglist; 11993 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 11994 uint32_t local_used, remote_used, total_used; 11995 int retval; 11996 int i, j; 11997 11998 retval = 0; 11999 12000 rq = ctl_dt_req_alloc(); 12001 12002 /* 12003 * If we failed to allocate the request, and if the DMA didn't fail 12004 * anyway, set busy status. This is just a resource allocation 12005 * failure. 12006 */ 12007 if ((rq == NULL) 12008 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12009 ctl_set_busy(&io->scsiio); 12010 12011 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12012 12013 if (rq != NULL) 12014 ctl_dt_req_free(rq); 12015 12016 /* 12017 * The data move failed. We need to return status back 12018 * to the other controller. No point in trying to DMA 12019 * data to the remote controller. 12020 */ 12021 12022 ctl_send_datamove_done(io, /*have_lock*/ 0); 12023 12024 retval = 1; 12025 12026 goto bailout; 12027 } 12028 12029 local_sglist = io->io_hdr.local_sglist; 12030 local_dma_sglist = io->io_hdr.local_dma_sglist; 12031 remote_sglist = io->io_hdr.remote_sglist; 12032 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12033 local_used = 0; 12034 remote_used = 0; 12035 total_used = 0; 12036 12037 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12038 rq->ret = CTL_HA_STATUS_SUCCESS; 12039 rq->context = io; 12040 callback(rq); 12041 goto bailout; 12042 } 12043 12044 /* 12045 * Pull/push the data over the wire from/to the other controller. 12046 * This takes into account the possibility that the local and 12047 * remote sglists may not be identical in terms of the size of 12048 * the elements and the number of elements. 12049 * 12050 * One fundamental assumption here is that the length allocated for 12051 * both the local and remote sglists is identical. Otherwise, we've 12052 * essentially got a coding error of some sort. 12053 */ 12054 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12055 int isc_ret; 12056 uint32_t cur_len, dma_length; 12057 uint8_t *tmp_ptr; 12058 12059 rq->id = CTL_HA_DATA_CTL; 12060 rq->command = command; 12061 rq->context = io; 12062 12063 /* 12064 * Both pointers should be aligned. But it is possible 12065 * that the allocation length is not. They should both 12066 * also have enough slack left over at the end, though, 12067 * to round up to the next 8 byte boundary. 12068 */ 12069 cur_len = ctl_min(local_sglist[i].len - local_used, 12070 remote_sglist[j].len - remote_used); 12071 12072 /* 12073 * In this case, we have a size issue and need to decrease 12074 * the size, except in the case where we actually have less 12075 * than 8 bytes left. In that case, we need to increase 12076 * the DMA length to get the last bit. 12077 */ 12078 if ((cur_len & 0x7) != 0) { 12079 if (cur_len > 0x7) { 12080 cur_len = cur_len - (cur_len & 0x7); 12081 dma_length = cur_len; 12082 } else { 12083 CTL_SIZE_8B(dma_length, cur_len); 12084 } 12085 12086 } else 12087 dma_length = cur_len; 12088 12089 /* 12090 * If we had to allocate memory for this I/O, instead of using 12091 * the non-cached mirror memory, we'll need to flush the cache 12092 * before trying to DMA to the other controller. 12093 * 12094 * We could end up doing this multiple times for the same 12095 * segment if we have a larger local segment than remote 12096 * segment. That shouldn't be an issue. 12097 */ 12098 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12099 /* 12100 * XXX KDM use bus_dmamap_sync() here. 12101 */ 12102 } 12103 12104 rq->size = dma_length; 12105 12106 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12107 tmp_ptr += local_used; 12108 12109 /* Use physical addresses when talking to ISC hardware */ 12110 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12111 /* XXX KDM use busdma */ 12112#if 0 12113 rq->local = vtophys(tmp_ptr); 12114#endif 12115 } else 12116 rq->local = tmp_ptr; 12117 12118 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12119 tmp_ptr += remote_used; 12120 rq->remote = tmp_ptr; 12121 12122 rq->callback = NULL; 12123 12124 local_used += cur_len; 12125 if (local_used >= local_sglist[i].len) { 12126 i++; 12127 local_used = 0; 12128 } 12129 12130 remote_used += cur_len; 12131 if (remote_used >= remote_sglist[j].len) { 12132 j++; 12133 remote_used = 0; 12134 } 12135 total_used += cur_len; 12136 12137 if (total_used >= io->scsiio.kern_data_len) 12138 rq->callback = callback; 12139 12140 if ((rq->size & 0x7) != 0) { 12141 printf("%s: warning: size %d is not on 8b boundary\n", 12142 __func__, rq->size); 12143 } 12144 if (((uintptr_t)rq->local & 0x7) != 0) { 12145 printf("%s: warning: local %p not on 8b boundary\n", 12146 __func__, rq->local); 12147 } 12148 if (((uintptr_t)rq->remote & 0x7) != 0) { 12149 printf("%s: warning: remote %p not on 8b boundary\n", 12150 __func__, rq->local); 12151 } 12152#if 0 12153 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12154 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12155 rq->local, rq->remote, rq->size); 12156#endif 12157 12158 isc_ret = ctl_dt_single(rq); 12159 if (isc_ret == CTL_HA_STATUS_WAIT) 12160 continue; 12161 12162 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12163 rq->ret = CTL_HA_STATUS_SUCCESS; 12164 } else { 12165 rq->ret = isc_ret; 12166 } 12167 callback(rq); 12168 goto bailout; 12169 } 12170 12171bailout: 12172 return (retval); 12173 12174} 12175 12176static void 12177ctl_datamove_remote_read(union ctl_io *io) 12178{ 12179 int retval; 12180 int i; 12181 12182 /* 12183 * This will send an error to the other controller in the case of a 12184 * failure. 12185 */ 12186 retval = ctl_datamove_remote_sgl_setup(io); 12187 if (retval != 0) 12188 return; 12189 12190 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12191 ctl_datamove_remote_read_cb); 12192 if ((retval != 0) 12193 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12194 /* 12195 * Make sure we free memory if there was an error.. The 12196 * ctl_datamove_remote_xfer() function will send the 12197 * datamove done message, or call the callback with an 12198 * error if there is a problem. 12199 */ 12200 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12201 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12202 } 12203 12204 return; 12205} 12206 12207/* 12208 * Process a datamove request from the other controller. This is used for 12209 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12210 * first. Once that is complete, the data gets DMAed into the remote 12211 * controller's memory. For reads, we DMA from the remote controller's 12212 * memory into our memory first, and then move it out to the FETD. 12213 */ 12214static void 12215ctl_datamove_remote(union ctl_io *io) 12216{ 12217 struct ctl_softc *softc; 12218 12219 softc = control_softc; 12220 12221 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12222 12223 /* 12224 * Note that we look for an aborted I/O here, but don't do some of 12225 * the other checks that ctl_datamove() normally does. We don't 12226 * need to run the task queue, because this I/O is on the ISC 12227 * queue, which is executed by the work thread after the task queue. 12228 * We don't need to run the datamove delay code, since that should 12229 * have been done if need be on the other controller. 12230 */ 12231 mtx_lock(&softc->ctl_lock); 12232 12233 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12234 12235 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12236 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12237 io->io_hdr.nexus.targ_port, 12238 io->io_hdr.nexus.targ_target.id, 12239 io->io_hdr.nexus.targ_lun); 12240 io->io_hdr.status = CTL_CMD_ABORTED; 12241 io->io_hdr.port_status = 31338; 12242 12243 mtx_unlock(&softc->ctl_lock); 12244 12245 ctl_send_datamove_done(io, /*have_lock*/ 0); 12246 12247 return; 12248 } 12249 12250 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12251 mtx_unlock(&softc->ctl_lock); 12252 ctl_datamove_remote_write(io); 12253 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12254 mtx_unlock(&softc->ctl_lock); 12255 ctl_datamove_remote_read(io); 12256 } else { 12257 union ctl_ha_msg msg; 12258 struct scsi_sense_data *sense; 12259 uint8_t sks[3]; 12260 int retry_count; 12261 12262 memset(&msg, 0, sizeof(msg)); 12263 12264 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12265 msg.hdr.status = CTL_SCSI_ERROR; 12266 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12267 12268 retry_count = 4243; 12269 12270 sense = &msg.scsi.sense_data; 12271 sks[0] = SSD_SCS_VALID; 12272 sks[1] = (retry_count >> 8) & 0xff; 12273 sks[2] = retry_count & 0xff; 12274 12275 /* "Internal target failure" */ 12276 scsi_set_sense_data(sense, 12277 /*sense_format*/ SSD_TYPE_NONE, 12278 /*current_error*/ 1, 12279 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12280 /*asc*/ 0x44, 12281 /*ascq*/ 0x00, 12282 /*type*/ SSD_ELEM_SKS, 12283 /*size*/ sizeof(sks), 12284 /*data*/ sks, 12285 SSD_ELEM_NONE); 12286 12287 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12288 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12289 ctl_failover_io(io, /*have_lock*/ 1); 12290 mtx_unlock(&softc->ctl_lock); 12291 return; 12292 } 12293 12294 mtx_unlock(&softc->ctl_lock); 12295 12296 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12297 CTL_HA_STATUS_SUCCESS) { 12298 /* XXX KDM what to do if this fails? */ 12299 } 12300 return; 12301 } 12302 12303} 12304 12305static int 12306ctl_process_done(union ctl_io *io, int have_lock) 12307{ 12308 struct ctl_lun *lun; 12309 struct ctl_softc *ctl_softc; 12310 void (*fe_done)(union ctl_io *io); 12311 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12312 12313 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12314 12315 fe_done = 12316 control_softc->ctl_ports[targ_port]->fe_done; 12317 12318#ifdef CTL_TIME_IO 12319 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12320 char str[256]; 12321 char path_str[64]; 12322 struct sbuf sb; 12323 12324 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12325 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12326 12327 sbuf_cat(&sb, path_str); 12328 switch (io->io_hdr.io_type) { 12329 case CTL_IO_SCSI: 12330 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12331 sbuf_printf(&sb, "\n"); 12332 sbuf_cat(&sb, path_str); 12333 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12334 io->scsiio.tag_num, io->scsiio.tag_type); 12335 break; 12336 case CTL_IO_TASK: 12337 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12338 "Tag Type: %d\n", io->taskio.task_action, 12339 io->taskio.tag_num, io->taskio.tag_type); 12340 break; 12341 default: 12342 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12343 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12344 break; 12345 } 12346 sbuf_cat(&sb, path_str); 12347 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12348 (intmax_t)time_uptime - io->io_hdr.start_time); 12349 sbuf_finish(&sb); 12350 printf("%s", sbuf_data(&sb)); 12351 } 12352#endif /* CTL_TIME_IO */ 12353 12354 switch (io->io_hdr.io_type) { 12355 case CTL_IO_SCSI: 12356 break; 12357 case CTL_IO_TASK: 12358 if (bootverbose || verbose > 0) 12359 ctl_io_error_print(io, NULL); 12360 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12361 ctl_free_io(io); 12362 else 12363 fe_done(io); 12364 return (CTL_RETVAL_COMPLETE); 12365 break; 12366 default: 12367 printf("ctl_process_done: invalid io type %d\n", 12368 io->io_hdr.io_type); 12369 panic("ctl_process_done: invalid io type %d\n", 12370 io->io_hdr.io_type); 12371 break; /* NOTREACHED */ 12372 } 12373 12374 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12375 if (lun == NULL) { 12376 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12377 io->io_hdr.nexus.targ_lun)); 12378 fe_done(io); 12379 goto bailout; 12380 } 12381 ctl_softc = lun->ctl_softc; 12382 12383 /* 12384 * Remove this from the OOA queue. 12385 */ 12386 if (have_lock == 0) 12387 mtx_lock(&ctl_softc->ctl_lock); 12388 12389 /* 12390 * Check to see if we have any errors to inject here. We only 12391 * inject errors for commands that don't already have errors set. 12392 */ 12393 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12394 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12395 ctl_inject_error(lun, io); 12396 12397 /* 12398 * XXX KDM how do we treat commands that aren't completed 12399 * successfully? 12400 * 12401 * XXX KDM should we also track I/O latency? 12402 */ 12403 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12404 uint32_t blocksize; 12405#ifdef CTL_TIME_IO 12406 struct bintime cur_bt; 12407#endif 12408 12409 if ((lun->be_lun != NULL) 12410 && (lun->be_lun->blocksize != 0)) 12411 blocksize = lun->be_lun->blocksize; 12412 else 12413 blocksize = 512; 12414 12415 switch (io->io_hdr.io_type) { 12416 case CTL_IO_SCSI: { 12417 int isread; 12418 struct ctl_lba_len lbalen; 12419 12420 isread = 0; 12421 switch (io->scsiio.cdb[0]) { 12422 case READ_6: 12423 case READ_10: 12424 case READ_12: 12425 case READ_16: 12426 isread = 1; 12427 /* FALLTHROUGH */ 12428 case WRITE_6: 12429 case WRITE_10: 12430 case WRITE_12: 12431 case WRITE_16: 12432 case WRITE_VERIFY_10: 12433 case WRITE_VERIFY_12: 12434 case WRITE_VERIFY_16: 12435 memcpy(&lbalen, io->io_hdr.ctl_private[ 12436 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12437 12438 if (isread) { 12439 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12440 lbalen.len * blocksize; 12441 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12442 12443#ifdef CTL_TIME_IO 12444 bintime_add( 12445 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12446 &io->io_hdr.dma_bt); 12447 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12448 io->io_hdr.num_dmas; 12449 getbintime(&cur_bt); 12450 bintime_sub(&cur_bt, 12451 &io->io_hdr.start_bt); 12452 12453 bintime_add( 12454 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12455 &cur_bt); 12456 12457#if 0 12458 cs_prof_gettime(&cur_ticks); 12459 lun->stats.time[CTL_STATS_READ] += 12460 cur_ticks - 12461 io->io_hdr.start_ticks; 12462#endif 12463#if 0 12464 lun->stats.time[CTL_STATS_READ] += 12465 jiffies - io->io_hdr.start_time; 12466#endif 12467#endif /* CTL_TIME_IO */ 12468 } else { 12469 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12470 lbalen.len * blocksize; 12471 lun->stats.ports[targ_port].operations[ 12472 CTL_STATS_WRITE]++; 12473 12474#ifdef CTL_TIME_IO 12475 bintime_add( 12476 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12477 &io->io_hdr.dma_bt); 12478 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12479 io->io_hdr.num_dmas; 12480 getbintime(&cur_bt); 12481 bintime_sub(&cur_bt, 12482 &io->io_hdr.start_bt); 12483 12484 bintime_add( 12485 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12486 &cur_bt); 12487#if 0 12488 cs_prof_gettime(&cur_ticks); 12489 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12490 cur_ticks - 12491 io->io_hdr.start_ticks; 12492 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12493 jiffies - io->io_hdr.start_time; 12494#endif 12495#endif /* CTL_TIME_IO */ 12496 } 12497 break; 12498 default: 12499 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12500 12501#ifdef CTL_TIME_IO 12502 bintime_add( 12503 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12504 &io->io_hdr.dma_bt); 12505 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12506 io->io_hdr.num_dmas; 12507 getbintime(&cur_bt); 12508 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12509 12510 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12511 &cur_bt); 12512 12513#if 0 12514 cs_prof_gettime(&cur_ticks); 12515 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12516 cur_ticks - 12517 io->io_hdr.start_ticks; 12518 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12519 jiffies - io->io_hdr.start_time; 12520#endif 12521#endif /* CTL_TIME_IO */ 12522 break; 12523 } 12524 break; 12525 } 12526 default: 12527 break; 12528 } 12529 } 12530 12531 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12532 12533 /* 12534 * Run through the blocked queue on this LUN and see if anything 12535 * has become unblocked, now that this transaction is done. 12536 */ 12537 ctl_check_blocked(lun); 12538 12539 /* 12540 * If the LUN has been invalidated, free it if there is nothing 12541 * left on its OOA queue. 12542 */ 12543 if ((lun->flags & CTL_LUN_INVALID) 12544 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12545 ctl_free_lun(lun); 12546 12547 /* 12548 * If this command has been aborted, make sure we set the status 12549 * properly. The FETD is responsible for freeing the I/O and doing 12550 * whatever it needs to do to clean up its state. 12551 */ 12552 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12553 io->io_hdr.status = CTL_CMD_ABORTED; 12554 12555 /* 12556 * We print out status for every task management command. For SCSI 12557 * commands, we filter out any unit attention errors; they happen 12558 * on every boot, and would clutter up the log. Note: task 12559 * management commands aren't printed here, they are printed above, 12560 * since they should never even make it down here. 12561 */ 12562 switch (io->io_hdr.io_type) { 12563 case CTL_IO_SCSI: { 12564 int error_code, sense_key, asc, ascq; 12565 12566 sense_key = 0; 12567 12568 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12569 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12570 /* 12571 * Since this is just for printing, no need to 12572 * show errors here. 12573 */ 12574 scsi_extract_sense_len(&io->scsiio.sense_data, 12575 io->scsiio.sense_len, 12576 &error_code, 12577 &sense_key, 12578 &asc, 12579 &ascq, 12580 /*show_errors*/ 0); 12581 } 12582 12583 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12584 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12585 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12586 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12587 12588 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12589 ctl_softc->skipped_prints++; 12590 if (have_lock == 0) 12591 mtx_unlock(&ctl_softc->ctl_lock); 12592 } else { 12593 uint32_t skipped_prints; 12594 12595 skipped_prints = ctl_softc->skipped_prints; 12596 12597 ctl_softc->skipped_prints = 0; 12598 ctl_softc->last_print_jiffies = time_uptime; 12599 12600 if (have_lock == 0) 12601 mtx_unlock(&ctl_softc->ctl_lock); 12602 if (skipped_prints > 0) { 12603#ifdef NEEDTOPORT 12604 csevent_log(CSC_CTL | CSC_SHELF_SW | 12605 CTL_ERROR_REPORT, 12606 csevent_LogType_Trace, 12607 csevent_Severity_Information, 12608 csevent_AlertLevel_Green, 12609 csevent_FRU_Firmware, 12610 csevent_FRU_Unknown, 12611 "High CTL error volume, %d prints " 12612 "skipped", skipped_prints); 12613#endif 12614 } 12615 if (bootverbose || verbose > 0) 12616 ctl_io_error_print(io, NULL); 12617 } 12618 } else { 12619 if (have_lock == 0) 12620 mtx_unlock(&ctl_softc->ctl_lock); 12621 } 12622 break; 12623 } 12624 case CTL_IO_TASK: 12625 if (have_lock == 0) 12626 mtx_unlock(&ctl_softc->ctl_lock); 12627 if (bootverbose || verbose > 0) 12628 ctl_io_error_print(io, NULL); 12629 break; 12630 default: 12631 if (have_lock == 0) 12632 mtx_unlock(&ctl_softc->ctl_lock); 12633 break; 12634 } 12635 12636 /* 12637 * Tell the FETD or the other shelf controller we're done with this 12638 * command. Note that only SCSI commands get to this point. Task 12639 * management commands are completed above. 12640 * 12641 * We only send status to the other controller if we're in XFER 12642 * mode. In SER_ONLY mode, the I/O is done on the controller that 12643 * received the I/O (from CTL's perspective), and so the status is 12644 * generated there. 12645 * 12646 * XXX KDM if we hold the lock here, we could cause a deadlock 12647 * if the frontend comes back in in this context to queue 12648 * something. 12649 */ 12650 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12651 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12652 union ctl_ha_msg msg; 12653 12654 memset(&msg, 0, sizeof(msg)); 12655 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12656 msg.hdr.original_sc = io->io_hdr.original_sc; 12657 msg.hdr.nexus = io->io_hdr.nexus; 12658 msg.hdr.status = io->io_hdr.status; 12659 msg.scsi.scsi_status = io->scsiio.scsi_status; 12660 msg.scsi.tag_num = io->scsiio.tag_num; 12661 msg.scsi.tag_type = io->scsiio.tag_type; 12662 msg.scsi.sense_len = io->scsiio.sense_len; 12663 msg.scsi.sense_residual = io->scsiio.sense_residual; 12664 msg.scsi.residual = io->scsiio.residual; 12665 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12666 sizeof(io->scsiio.sense_data)); 12667 /* 12668 * We copy this whether or not this is an I/O-related 12669 * command. Otherwise, we'd have to go and check to see 12670 * whether it's a read/write command, and it really isn't 12671 * worth it. 12672 */ 12673 memcpy(&msg.scsi.lbalen, 12674 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12675 sizeof(msg.scsi.lbalen)); 12676 12677 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12678 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12679 /* XXX do something here */ 12680 } 12681 12682 ctl_free_io(io); 12683 } else 12684 fe_done(io); 12685 12686bailout: 12687 12688 return (CTL_RETVAL_COMPLETE); 12689} 12690 12691/* 12692 * Front end should call this if it doesn't do autosense. When the request 12693 * sense comes back in from the initiator, we'll dequeue this and send it. 12694 */ 12695int 12696ctl_queue_sense(union ctl_io *io) 12697{ 12698 struct ctl_lun *lun; 12699 struct ctl_softc *ctl_softc; 12700 uint32_t initidx, targ_lun; 12701 12702 ctl_softc = control_softc; 12703 12704 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 12705 12706 /* 12707 * LUN lookup will likely move to the ctl_work_thread() once we 12708 * have our new queueing infrastructure (that doesn't put things on 12709 * a per-LUN queue initially). That is so that we can handle 12710 * things like an INQUIRY to a LUN that we don't have enabled. We 12711 * can't deal with that right now. 12712 */ 12713 mtx_lock(&ctl_softc->ctl_lock); 12714 12715 /* 12716 * If we don't have a LUN for this, just toss the sense 12717 * information. 12718 */ 12719 targ_lun = io->io_hdr.nexus.targ_lun; 12720 if (io->io_hdr.nexus.lun_map_fn != NULL) 12721 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 12722 if ((targ_lun < CTL_MAX_LUNS) 12723 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 12724 lun = ctl_softc->ctl_luns[targ_lun]; 12725 else 12726 goto bailout; 12727 12728 initidx = ctl_get_initindex(&io->io_hdr.nexus); 12729 12730 /* 12731 * Already have CA set for this LUN...toss the sense information. 12732 */ 12733 if (ctl_is_set(lun->have_ca, initidx)) 12734 goto bailout; 12735 12736 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 12737 ctl_min(sizeof(lun->pending_sense[initidx].sense), 12738 sizeof(io->scsiio.sense_data))); 12739 ctl_set_mask(lun->have_ca, initidx); 12740 12741bailout: 12742 mtx_unlock(&ctl_softc->ctl_lock); 12743 12744 ctl_free_io(io); 12745 12746 return (CTL_RETVAL_COMPLETE); 12747} 12748 12749/* 12750 * Primary command inlet from frontend ports. All SCSI and task I/O 12751 * requests must go through this function. 12752 */ 12753int 12754ctl_queue(union ctl_io *io) 12755{ 12756 struct ctl_softc *ctl_softc; 12757 12758 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 12759 12760 ctl_softc = control_softc; 12761 12762#ifdef CTL_TIME_IO 12763 io->io_hdr.start_time = time_uptime; 12764 getbintime(&io->io_hdr.start_bt); 12765#endif /* CTL_TIME_IO */ 12766 12767 mtx_lock(&ctl_softc->ctl_lock); 12768 12769 switch (io->io_hdr.io_type) { 12770 case CTL_IO_SCSI: 12771 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 12772 links); 12773 break; 12774 case CTL_IO_TASK: 12775 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 12776 /* 12777 * Set the task pending flag. This is necessary to close a 12778 * race condition with the FETD: 12779 * 12780 * - FETD submits a task management command, like an abort. 12781 * - Back end calls fe_datamove() to move the data for the 12782 * aborted command. The FETD can't really accept it, but 12783 * if it did, it would end up transmitting data for a 12784 * command that the initiator told us to abort. 12785 * 12786 * We close the race condition by setting the flag here, 12787 * and checking it in ctl_datamove(), before calling the 12788 * FETD's fe_datamove routine. If we've got a task 12789 * pending, we run the task queue and then check to see 12790 * whether our particular I/O has been aborted. 12791 */ 12792 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 12793 break; 12794 default: 12795 mtx_unlock(&ctl_softc->ctl_lock); 12796 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 12797 return (-EINVAL); 12798 break; /* NOTREACHED */ 12799 } 12800 mtx_unlock(&ctl_softc->ctl_lock); 12801 12802 ctl_wakeup_thread(); 12803 12804 return (CTL_RETVAL_COMPLETE); 12805} 12806 12807#ifdef CTL_IO_DELAY 12808static void 12809ctl_done_timer_wakeup(void *arg) 12810{ 12811 union ctl_io *io; 12812 12813 io = (union ctl_io *)arg; 12814 ctl_done_lock(io, /*have_lock*/ 0); 12815} 12816#endif /* CTL_IO_DELAY */ 12817 12818void 12819ctl_done_lock(union ctl_io *io, int have_lock) 12820{ 12821 struct ctl_softc *ctl_softc; 12822#ifndef CTL_DONE_THREAD 12823 union ctl_io *xio; 12824#endif /* !CTL_DONE_THREAD */ 12825 12826 ctl_softc = control_softc; 12827 12828 if (have_lock == 0) 12829 mtx_lock(&ctl_softc->ctl_lock); 12830 12831 /* 12832 * Enable this to catch duplicate completion issues. 12833 */ 12834#if 0 12835 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 12836 printf("%s: type %d msg %d cdb %x iptl: " 12837 "%d:%d:%d:%d tag 0x%04x " 12838 "flag %#x status %x\n", 12839 __func__, 12840 io->io_hdr.io_type, 12841 io->io_hdr.msg_type, 12842 io->scsiio.cdb[0], 12843 io->io_hdr.nexus.initid.id, 12844 io->io_hdr.nexus.targ_port, 12845 io->io_hdr.nexus.targ_target.id, 12846 io->io_hdr.nexus.targ_lun, 12847 (io->io_hdr.io_type == 12848 CTL_IO_TASK) ? 12849 io->taskio.tag_num : 12850 io->scsiio.tag_num, 12851 io->io_hdr.flags, 12852 io->io_hdr.status); 12853 } else 12854 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 12855#endif 12856 12857 /* 12858 * This is an internal copy of an I/O, and should not go through 12859 * the normal done processing logic. 12860 */ 12861 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 12862 if (have_lock == 0) 12863 mtx_unlock(&ctl_softc->ctl_lock); 12864 return; 12865 } 12866 12867 /* 12868 * We need to send a msg to the serializing shelf to finish the IO 12869 * as well. We don't send a finish message to the other shelf if 12870 * this is a task management command. Task management commands 12871 * aren't serialized in the OOA queue, but rather just executed on 12872 * both shelf controllers for commands that originated on that 12873 * controller. 12874 */ 12875 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 12876 && (io->io_hdr.io_type != CTL_IO_TASK)) { 12877 union ctl_ha_msg msg_io; 12878 12879 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 12880 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 12881 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 12882 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 12883 } 12884 /* continue on to finish IO */ 12885 } 12886#ifdef CTL_IO_DELAY 12887 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12888 struct ctl_lun *lun; 12889 12890 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12891 12892 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12893 } else { 12894 struct ctl_lun *lun; 12895 12896 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12897 12898 if ((lun != NULL) 12899 && (lun->delay_info.done_delay > 0)) { 12900 struct callout *callout; 12901 12902 callout = (struct callout *)&io->io_hdr.timer_bytes; 12903 callout_init(callout, /*mpsafe*/ 1); 12904 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12905 callout_reset(callout, 12906 lun->delay_info.done_delay * hz, 12907 ctl_done_timer_wakeup, io); 12908 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 12909 lun->delay_info.done_delay = 0; 12910 if (have_lock == 0) 12911 mtx_unlock(&ctl_softc->ctl_lock); 12912 return; 12913 } 12914 } 12915#endif /* CTL_IO_DELAY */ 12916 12917 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 12918 12919#ifdef CTL_DONE_THREAD 12920 if (have_lock == 0) 12921 mtx_unlock(&ctl_softc->ctl_lock); 12922 12923 ctl_wakeup_thread(); 12924#else /* CTL_DONE_THREAD */ 12925 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 12926 xio != NULL; 12927 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 12928 12929 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 12930 12931 ctl_process_done(xio, /*have_lock*/ 1); 12932 } 12933 if (have_lock == 0) 12934 mtx_unlock(&ctl_softc->ctl_lock); 12935#endif /* CTL_DONE_THREAD */ 12936} 12937 12938void 12939ctl_done(union ctl_io *io) 12940{ 12941 ctl_done_lock(io, /*have_lock*/ 0); 12942} 12943 12944int 12945ctl_isc(struct ctl_scsiio *ctsio) 12946{ 12947 struct ctl_lun *lun; 12948 int retval; 12949 12950 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12951 12952 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 12953 12954 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 12955 12956 retval = lun->backend->data_submit((union ctl_io *)ctsio); 12957 12958 return (retval); 12959} 12960 12961 12962static void 12963ctl_work_thread(void *arg) 12964{ 12965 struct ctl_softc *softc; 12966 union ctl_io *io; 12967 struct ctl_be_lun *be_lun; 12968 int retval; 12969 12970 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 12971 12972 softc = (struct ctl_softc *)arg; 12973 if (softc == NULL) 12974 return; 12975 12976 mtx_lock(&softc->ctl_lock); 12977 for (;;) { 12978 retval = 0; 12979 12980 /* 12981 * We handle the queues in this order: 12982 * - task management 12983 * - ISC 12984 * - done queue (to free up resources, unblock other commands) 12985 * - RtR queue 12986 * - incoming queue 12987 * 12988 * If those queues are empty, we break out of the loop and 12989 * go to sleep. 12990 */ 12991 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 12992 if (io != NULL) { 12993 ctl_run_task_queue(softc); 12994 continue; 12995 } 12996 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 12997 if (io != NULL) { 12998 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 12999 ctl_handle_isc(io); 13000 continue; 13001 } 13002 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13003 if (io != NULL) { 13004 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13005 /* clear any blocked commands, call fe_done */ 13006 mtx_unlock(&softc->ctl_lock); 13007 /* 13008 * XXX KDM 13009 * Call this without a lock for now. This will 13010 * depend on whether there is any way the FETD can 13011 * sleep or deadlock if called with the CTL lock 13012 * held. 13013 */ 13014 retval = ctl_process_done(io, /*have_lock*/ 0); 13015 mtx_lock(&softc->ctl_lock); 13016 continue; 13017 } 13018 if (!ctl_pause_rtr) { 13019 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13020 if (io != NULL) { 13021 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13022 mtx_unlock(&softc->ctl_lock); 13023 retval = ctl_scsiio(&io->scsiio); 13024 if (retval != CTL_RETVAL_COMPLETE) 13025 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13026 mtx_lock(&softc->ctl_lock); 13027 continue; 13028 } 13029 } 13030 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13031 if (io != NULL) { 13032 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13033 mtx_unlock(&softc->ctl_lock); 13034 ctl_scsiio_precheck(softc, &io->scsiio); 13035 mtx_lock(&softc->ctl_lock); 13036 continue; 13037 } 13038 /* 13039 * We might want to move this to a separate thread, so that 13040 * configuration requests (in this case LUN creations) 13041 * won't impact the I/O path. 13042 */ 13043 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13044 if (be_lun != NULL) { 13045 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13046 mtx_unlock(&softc->ctl_lock); 13047 ctl_create_lun(be_lun); 13048 mtx_lock(&softc->ctl_lock); 13049 continue; 13050 } 13051 13052 /* XXX KDM use the PDROP flag?? */ 13053 /* Sleep until we have something to do. */ 13054 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0); 13055 13056 /* Back to the top of the loop to see what woke us up. */ 13057 continue; 13058 } 13059} 13060 13061void 13062ctl_wakeup_thread() 13063{ 13064 struct ctl_softc *softc; 13065 13066 softc = control_softc; 13067 13068 wakeup_one(softc); 13069} 13070 13071/* Initialization and failover */ 13072 13073void 13074ctl_init_isc_msg(void) 13075{ 13076 printf("CTL: Still calling this thing\n"); 13077} 13078 13079/* 13080 * Init component 13081 * Initializes component into configuration defined by bootMode 13082 * (see hasc-sv.c) 13083 * returns hasc_Status: 13084 * OK 13085 * ERROR - fatal error 13086 */ 13087static ctl_ha_comp_status 13088ctl_isc_init(struct ctl_ha_component *c) 13089{ 13090 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13091 13092 c->status = ret; 13093 return ret; 13094} 13095 13096/* Start component 13097 * Starts component in state requested. If component starts successfully, 13098 * it must set its own state to the requestrd state 13099 * When requested state is HASC_STATE_HA, the component may refine it 13100 * by adding _SLAVE or _MASTER flags. 13101 * Currently allowed state transitions are: 13102 * UNKNOWN->HA - initial startup 13103 * UNKNOWN->SINGLE - initial startup when no parter detected 13104 * HA->SINGLE - failover 13105 * returns ctl_ha_comp_status: 13106 * OK - component successfully started in requested state 13107 * FAILED - could not start the requested state, failover may 13108 * be possible 13109 * ERROR - fatal error detected, no future startup possible 13110 */ 13111static ctl_ha_comp_status 13112ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13113{ 13114 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13115 13116 printf("%s: go\n", __func__); 13117 13118 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13119 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13120 ctl_is_single = 0; 13121 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13122 != CTL_HA_STATUS_SUCCESS) { 13123 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13124 ret = CTL_HA_COMP_STATUS_ERROR; 13125 } 13126 } else if (CTL_HA_STATE_IS_HA(c->state) 13127 && CTL_HA_STATE_IS_SINGLE(state)){ 13128 // HA->SINGLE transition 13129 ctl_failover(); 13130 ctl_is_single = 1; 13131 } else { 13132 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13133 c->state, state); 13134 ret = CTL_HA_COMP_STATUS_ERROR; 13135 } 13136 if (CTL_HA_STATE_IS_SINGLE(state)) 13137 ctl_is_single = 1; 13138 13139 c->state = state; 13140 c->status = ret; 13141 return ret; 13142} 13143 13144/* 13145 * Quiesce component 13146 * The component must clear any error conditions (set status to OK) and 13147 * prepare itself to another Start call 13148 * returns ctl_ha_comp_status: 13149 * OK 13150 * ERROR 13151 */ 13152static ctl_ha_comp_status 13153ctl_isc_quiesce(struct ctl_ha_component *c) 13154{ 13155 int ret = CTL_HA_COMP_STATUS_OK; 13156 13157 ctl_pause_rtr = 1; 13158 c->status = ret; 13159 return ret; 13160} 13161 13162struct ctl_ha_component ctl_ha_component_ctlisc = 13163{ 13164 .name = "CTL ISC", 13165 .state = CTL_HA_STATE_UNKNOWN, 13166 .init = ctl_isc_init, 13167 .start = ctl_isc_start, 13168 .quiesce = ctl_isc_quiesce 13169}; 13170 13171/* 13172 * vim: ts=8 13173 */ 13174