ctl.c revision 268683
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: stable/10/sys/cam/ctl/ctl.c 268683 2014-07-15 17:06:10Z 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 * Size and alignment macros needed for Copan-specific HA hardware. These 87 * can go away when the HA code is re-written, and uses busdma for any 88 * hardware. 89 */ 90#define CTL_ALIGN_8B(target, source, type) \ 91 if (((uint32_t)source & 0x7) != 0) \ 92 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 93 else \ 94 target = (type)source; 95 96#define CTL_SIZE_8B(target, size) \ 97 if ((size & 0x7) != 0) \ 98 target = size + (0x8 - (size & 0x7)); \ 99 else \ 100 target = size; 101 102#define CTL_ALIGN_8B_MARGIN 16 103 104/* 105 * Template mode pages. 106 */ 107 108/* 109 * Note that these are default values only. The actual values will be 110 * filled in when the user does a mode sense. 111 */ 112static struct copan_power_subpage power_page_default = { 113 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 114 /*subpage*/ PWR_SUBPAGE_CODE, 115 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 116 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 117 /*page_version*/ PWR_VERSION, 118 /* total_luns */ 26, 119 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 120 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 122 0, 0, 0, 0, 0, 0} 123}; 124 125static struct copan_power_subpage power_page_changeable = { 126 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 127 /*subpage*/ PWR_SUBPAGE_CODE, 128 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 129 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 130 /*page_version*/ 0, 131 /* total_luns */ 0, 132 /* max_active_luns*/ 0, 133 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0} 136}; 137 138static struct copan_aps_subpage aps_page_default = { 139 APS_PAGE_CODE | SMPH_SPF, //page_code 140 APS_SUBPAGE_CODE, //subpage 141 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 142 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 143 APS_VERSION, //page_version 144 0, //lock_active 145 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 146 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 147 0, 0, 0, 0, 0} //reserved 148}; 149 150static struct copan_aps_subpage aps_page_changeable = { 151 APS_PAGE_CODE | SMPH_SPF, //page_code 152 APS_SUBPAGE_CODE, //subpage 153 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 154 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 155 0, //page_version 156 0, //lock_active 157 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 159 0, 0, 0, 0, 0} //reserved 160}; 161 162static struct copan_debugconf_subpage debugconf_page_default = { 163 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 164 DBGCNF_SUBPAGE_CODE, /* subpage */ 165 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 166 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 167 DBGCNF_VERSION, /* page_version */ 168 {CTL_TIME_IO_DEFAULT_SECS>>8, 169 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 170}; 171 172static struct copan_debugconf_subpage debugconf_page_changeable = { 173 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 174 DBGCNF_SUBPAGE_CODE, /* subpage */ 175 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 176 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 177 0, /* page_version */ 178 {0xff,0xff}, /* ctl_time_io_secs */ 179}; 180 181static struct scsi_format_page format_page_default = { 182 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 183 /*page_length*/sizeof(struct scsi_format_page) - 2, 184 /*tracks_per_zone*/ {0, 0}, 185 /*alt_sectors_per_zone*/ {0, 0}, 186 /*alt_tracks_per_zone*/ {0, 0}, 187 /*alt_tracks_per_lun*/ {0, 0}, 188 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 189 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 190 /*bytes_per_sector*/ {0, 0}, 191 /*interleave*/ {0, 0}, 192 /*track_skew*/ {0, 0}, 193 /*cylinder_skew*/ {0, 0}, 194 /*flags*/ SFP_HSEC, 195 /*reserved*/ {0, 0, 0} 196}; 197 198static struct scsi_format_page format_page_changeable = { 199 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 200 /*page_length*/sizeof(struct scsi_format_page) - 2, 201 /*tracks_per_zone*/ {0, 0}, 202 /*alt_sectors_per_zone*/ {0, 0}, 203 /*alt_tracks_per_zone*/ {0, 0}, 204 /*alt_tracks_per_lun*/ {0, 0}, 205 /*sectors_per_track*/ {0, 0}, 206 /*bytes_per_sector*/ {0, 0}, 207 /*interleave*/ {0, 0}, 208 /*track_skew*/ {0, 0}, 209 /*cylinder_skew*/ {0, 0}, 210 /*flags*/ 0, 211 /*reserved*/ {0, 0, 0} 212}; 213 214static struct scsi_rigid_disk_page rigid_disk_page_default = { 215 /*page_code*/SMS_RIGID_DISK_PAGE, 216 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 217 /*cylinders*/ {0, 0, 0}, 218 /*heads*/ CTL_DEFAULT_HEADS, 219 /*start_write_precomp*/ {0, 0, 0}, 220 /*start_reduced_current*/ {0, 0, 0}, 221 /*step_rate*/ {0, 0}, 222 /*landing_zone_cylinder*/ {0, 0, 0}, 223 /*rpl*/ SRDP_RPL_DISABLED, 224 /*rotational_offset*/ 0, 225 /*reserved1*/ 0, 226 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 227 CTL_DEFAULT_ROTATION_RATE & 0xff}, 228 /*reserved2*/ {0, 0} 229}; 230 231static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 232 /*page_code*/SMS_RIGID_DISK_PAGE, 233 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 234 /*cylinders*/ {0, 0, 0}, 235 /*heads*/ 0, 236 /*start_write_precomp*/ {0, 0, 0}, 237 /*start_reduced_current*/ {0, 0, 0}, 238 /*step_rate*/ {0, 0}, 239 /*landing_zone_cylinder*/ {0, 0, 0}, 240 /*rpl*/ 0, 241 /*rotational_offset*/ 0, 242 /*reserved1*/ 0, 243 /*rotation_rate*/ {0, 0}, 244 /*reserved2*/ {0, 0} 245}; 246 247static struct scsi_caching_page caching_page_default = { 248 /*page_code*/SMS_CACHING_PAGE, 249 /*page_length*/sizeof(struct scsi_caching_page) - 2, 250 /*flags1*/ SCP_DISC | SCP_WCE, 251 /*ret_priority*/ 0, 252 /*disable_pf_transfer_len*/ {0xff, 0xff}, 253 /*min_prefetch*/ {0, 0}, 254 /*max_prefetch*/ {0xff, 0xff}, 255 /*max_pf_ceiling*/ {0xff, 0xff}, 256 /*flags2*/ 0, 257 /*cache_segments*/ 0, 258 /*cache_seg_size*/ {0, 0}, 259 /*reserved*/ 0, 260 /*non_cache_seg_size*/ {0, 0, 0} 261}; 262 263static struct scsi_caching_page caching_page_changeable = { 264 /*page_code*/SMS_CACHING_PAGE, 265 /*page_length*/sizeof(struct scsi_caching_page) - 2, 266 /*flags1*/ 0, 267 /*ret_priority*/ 0, 268 /*disable_pf_transfer_len*/ {0, 0}, 269 /*min_prefetch*/ {0, 0}, 270 /*max_prefetch*/ {0, 0}, 271 /*max_pf_ceiling*/ {0, 0}, 272 /*flags2*/ 0, 273 /*cache_segments*/ 0, 274 /*cache_seg_size*/ {0, 0}, 275 /*reserved*/ 0, 276 /*non_cache_seg_size*/ {0, 0, 0} 277}; 278 279static struct scsi_control_page control_page_default = { 280 /*page_code*/SMS_CONTROL_MODE_PAGE, 281 /*page_length*/sizeof(struct scsi_control_page) - 2, 282 /*rlec*/0, 283 /*queue_flags*/0, 284 /*eca_and_aen*/0, 285 /*reserved*/0, 286 /*aen_holdoff_period*/{0, 0} 287}; 288 289static struct scsi_control_page control_page_changeable = { 290 /*page_code*/SMS_CONTROL_MODE_PAGE, 291 /*page_length*/sizeof(struct scsi_control_page) - 2, 292 /*rlec*/SCP_DSENSE, 293 /*queue_flags*/0, 294 /*eca_and_aen*/0, 295 /*reserved*/0, 296 /*aen_holdoff_period*/{0, 0} 297}; 298 299 300/* 301 * XXX KDM move these into the softc. 302 */ 303static int rcv_sync_msg; 304static int persis_offset; 305static uint8_t ctl_pause_rtr; 306static int ctl_is_single = 1; 307static int index_to_aps_page; 308 309SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 310static int worker_threads = -1; 311TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 312SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 313 &worker_threads, 1, "Number of worker threads"); 314static int verbose = 0; 315TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 316SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 317 &verbose, 0, "Show SCSI errors returned to initiator"); 318 319/* 320 * Serial number (0x80), device id (0x83), supported pages (0x00), 321 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 322 */ 323#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 324 325static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 326 int param); 327static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 328static int ctl_init(void); 329void ctl_shutdown(void); 330static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 331static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 332static void ctl_ioctl_online(void *arg); 333static void ctl_ioctl_offline(void *arg); 334static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 335static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 336static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 337static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio); 338static int ctl_ioctl_submit_wait(union ctl_io *io); 339static void ctl_ioctl_datamove(union ctl_io *io); 340static void ctl_ioctl_done(union ctl_io *io); 341static void ctl_ioctl_hard_startstop_callback(void *arg, 342 struct cfi_metatask *metatask); 343static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 344static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 345 struct ctl_ooa *ooa_hdr, 346 struct ctl_ooa_entry *kern_entries); 347static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 348 struct thread *td); 349uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 350uint32_t ctl_port_idx(int port_num); 351#ifdef unused 352static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 353 uint32_t targ_target, uint32_t targ_lun, 354 int can_wait); 355static void ctl_kfree_io(union ctl_io *io); 356#endif /* unused */ 357static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 358 struct ctl_be_lun *be_lun, struct ctl_id target_id); 359static int ctl_free_lun(struct ctl_lun *lun); 360static void ctl_create_lun(struct ctl_be_lun *be_lun); 361/** 362static void ctl_failover_change_pages(struct ctl_softc *softc, 363 struct ctl_scsiio *ctsio, int master); 364**/ 365 366static int ctl_do_mode_select(union ctl_io *io); 367static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 368 uint64_t res_key, uint64_t sa_res_key, 369 uint8_t type, uint32_t residx, 370 struct ctl_scsiio *ctsio, 371 struct scsi_per_res_out *cdb, 372 struct scsi_per_res_out_parms* param); 373static void ctl_pro_preempt_other(struct ctl_lun *lun, 374 union ctl_ha_msg *msg); 375static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 376static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 377static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 378static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 379static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 380 int alloc_len); 381static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 382static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 383static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 384static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 385static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 386static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 387 union ctl_io *ooa_io); 388static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 389 union ctl_io *starting_io); 390static int ctl_check_blocked(struct ctl_lun *lun); 391static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 392 struct ctl_lun *lun, 393 const struct ctl_cmd_entry *entry, 394 struct ctl_scsiio *ctsio); 395//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 396static void ctl_failover(void); 397static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 398 struct ctl_scsiio *ctsio); 399static int ctl_scsiio(struct ctl_scsiio *ctsio); 400 401static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 402static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 403 ctl_ua_type ua_type); 404static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 405 ctl_ua_type ua_type); 406static int ctl_abort_task(union ctl_io *io); 407static void ctl_run_task(union ctl_io *io); 408#ifdef CTL_IO_DELAY 409static void ctl_datamove_timer_wakeup(void *arg); 410static void ctl_done_timer_wakeup(void *arg); 411#endif /* CTL_IO_DELAY */ 412 413static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 414static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 415static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 416static void ctl_datamove_remote_write(union ctl_io *io); 417static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 418static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 419static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 420static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 421 ctl_ha_dt_cb callback); 422static void ctl_datamove_remote_read(union ctl_io *io); 423static void ctl_datamove_remote(union ctl_io *io); 424static int ctl_process_done(union ctl_io *io); 425static void ctl_lun_thread(void *arg); 426static void ctl_work_thread(void *arg); 427static void ctl_enqueue_incoming(union ctl_io *io); 428static void ctl_enqueue_rtr(union ctl_io *io); 429static void ctl_enqueue_done(union ctl_io *io); 430static void ctl_enqueue_isc(union ctl_io *io); 431static const struct ctl_cmd_entry * 432 ctl_get_cmd_entry(struct ctl_scsiio *ctsio); 433static const struct ctl_cmd_entry * 434 ctl_validate_command(struct ctl_scsiio *ctsio); 435static int ctl_cmd_applicable(uint8_t lun_type, 436 const struct ctl_cmd_entry *entry); 437 438/* 439 * Load the serialization table. This isn't very pretty, but is probably 440 * the easiest way to do it. 441 */ 442#include "ctl_ser_table.c" 443 444/* 445 * We only need to define open, close and ioctl routines for this driver. 446 */ 447static struct cdevsw ctl_cdevsw = { 448 .d_version = D_VERSION, 449 .d_flags = 0, 450 .d_open = ctl_open, 451 .d_close = ctl_close, 452 .d_ioctl = ctl_ioctl, 453 .d_name = "ctl", 454}; 455 456 457MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 458MALLOC_DEFINE(M_CTLIO, "ctlio", "Memory used for CTL requests"); 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 struct ctl_frontend ioctl_frontend = 472{ 473 .name = "ioctl", 474}; 475 476static void 477ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 478 union ctl_ha_msg *msg_info) 479{ 480 struct ctl_scsiio *ctsio; 481 482 if (msg_info->hdr.original_sc == NULL) { 483 printf("%s: original_sc == NULL!\n", __func__); 484 /* XXX KDM now what? */ 485 return; 486 } 487 488 ctsio = &msg_info->hdr.original_sc->scsiio; 489 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 490 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 491 ctsio->io_hdr.status = msg_info->hdr.status; 492 ctsio->scsi_status = msg_info->scsi.scsi_status; 493 ctsio->sense_len = msg_info->scsi.sense_len; 494 ctsio->sense_residual = msg_info->scsi.sense_residual; 495 ctsio->residual = msg_info->scsi.residual; 496 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 497 sizeof(ctsio->sense_data)); 498 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 499 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 500 ctl_enqueue_isc((union ctl_io *)ctsio); 501} 502 503static void 504ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 505 union ctl_ha_msg *msg_info) 506{ 507 struct ctl_scsiio *ctsio; 508 509 if (msg_info->hdr.serializing_sc == NULL) { 510 printf("%s: serializing_sc == NULL!\n", __func__); 511 /* XXX KDM now what? */ 512 return; 513 } 514 515 ctsio = &msg_info->hdr.serializing_sc->scsiio; 516#if 0 517 /* 518 * Attempt to catch the situation where an I/O has 519 * been freed, and we're using it again. 520 */ 521 if (ctsio->io_hdr.io_type == 0xff) { 522 union ctl_io *tmp_io; 523 tmp_io = (union ctl_io *)ctsio; 524 printf("%s: %p use after free!\n", __func__, 525 ctsio); 526 printf("%s: type %d msg %d cdb %x iptl: " 527 "%d:%d:%d:%d tag 0x%04x " 528 "flag %#x status %x\n", 529 __func__, 530 tmp_io->io_hdr.io_type, 531 tmp_io->io_hdr.msg_type, 532 tmp_io->scsiio.cdb[0], 533 tmp_io->io_hdr.nexus.initid.id, 534 tmp_io->io_hdr.nexus.targ_port, 535 tmp_io->io_hdr.nexus.targ_target.id, 536 tmp_io->io_hdr.nexus.targ_lun, 537 (tmp_io->io_hdr.io_type == 538 CTL_IO_TASK) ? 539 tmp_io->taskio.tag_num : 540 tmp_io->scsiio.tag_num, 541 tmp_io->io_hdr.flags, 542 tmp_io->io_hdr.status); 543 } 544#endif 545 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 546 ctl_enqueue_isc((union ctl_io *)ctsio); 547} 548 549/* 550 * ISC (Inter Shelf Communication) event handler. Events from the HA 551 * subsystem come in here. 552 */ 553static void 554ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 555{ 556 struct ctl_softc *ctl_softc; 557 union ctl_io *io; 558 struct ctl_prio *presio; 559 ctl_ha_status isc_status; 560 561 ctl_softc = control_softc; 562 io = NULL; 563 564 565#if 0 566 printf("CTL: Isc Msg event %d\n", event); 567#endif 568 if (event == CTL_HA_EVT_MSG_RECV) { 569 union ctl_ha_msg msg_info; 570 571 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 572 sizeof(msg_info), /*wait*/ 0); 573#if 0 574 printf("CTL: msg_type %d\n", msg_info.msg_type); 575#endif 576 if (isc_status != 0) { 577 printf("Error receiving message, status = %d\n", 578 isc_status); 579 return; 580 } 581 582 switch (msg_info.hdr.msg_type) { 583 case CTL_MSG_SERIALIZE: 584#if 0 585 printf("Serialize\n"); 586#endif 587 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 588 if (io == NULL) { 589 printf("ctl_isc_event_handler: can't allocate " 590 "ctl_io!\n"); 591 /* Bad Juju */ 592 /* Need to set busy and send msg back */ 593 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 594 msg_info.hdr.status = CTL_SCSI_ERROR; 595 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 596 msg_info.scsi.sense_len = 0; 597 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 598 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 599 } 600 goto bailout; 601 } 602 ctl_zero_io(io); 603 // populate ctsio from msg_info 604 io->io_hdr.io_type = CTL_IO_SCSI; 605 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 606 io->io_hdr.original_sc = msg_info.hdr.original_sc; 607#if 0 608 printf("pOrig %x\n", (int)msg_info.original_sc); 609#endif 610 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 611 CTL_FLAG_IO_ACTIVE; 612 /* 613 * If we're in serialization-only mode, we don't 614 * want to go through full done processing. Thus 615 * the COPY flag. 616 * 617 * XXX KDM add another flag that is more specific. 618 */ 619 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 620 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 621 io->io_hdr.nexus = msg_info.hdr.nexus; 622#if 0 623 printf("targ %d, port %d, iid %d, lun %d\n", 624 io->io_hdr.nexus.targ_target.id, 625 io->io_hdr.nexus.targ_port, 626 io->io_hdr.nexus.initid.id, 627 io->io_hdr.nexus.targ_lun); 628#endif 629 io->scsiio.tag_num = msg_info.scsi.tag_num; 630 io->scsiio.tag_type = msg_info.scsi.tag_type; 631 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 632 CTL_MAX_CDBLEN); 633 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 634 const struct ctl_cmd_entry *entry; 635 636 entry = ctl_get_cmd_entry(&io->scsiio); 637 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 638 io->io_hdr.flags |= 639 entry->flags & CTL_FLAG_DATA_MASK; 640 } 641 ctl_enqueue_isc(io); 642 break; 643 644 /* Performed on the Originating SC, XFER mode only */ 645 case CTL_MSG_DATAMOVE: { 646 struct ctl_sg_entry *sgl; 647 int i, j; 648 649 io = msg_info.hdr.original_sc; 650 if (io == NULL) { 651 printf("%s: original_sc == NULL!\n", __func__); 652 /* XXX KDM do something here */ 653 break; 654 } 655 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 656 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 657 /* 658 * Keep track of this, we need to send it back over 659 * when the datamove is complete. 660 */ 661 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 662 663 if (msg_info.dt.sg_sequence == 0) { 664 /* 665 * XXX KDM we use the preallocated S/G list 666 * here, but we'll need to change this to 667 * dynamic allocation if we need larger S/G 668 * lists. 669 */ 670 if (msg_info.dt.kern_sg_entries > 671 sizeof(io->io_hdr.remote_sglist) / 672 sizeof(io->io_hdr.remote_sglist[0])) { 673 printf("%s: number of S/G entries " 674 "needed %u > allocated num %zd\n", 675 __func__, 676 msg_info.dt.kern_sg_entries, 677 sizeof(io->io_hdr.remote_sglist)/ 678 sizeof(io->io_hdr.remote_sglist[0])); 679 680 /* 681 * XXX KDM send a message back to 682 * the other side to shut down the 683 * DMA. The error will come back 684 * through via the normal channel. 685 */ 686 break; 687 } 688 sgl = io->io_hdr.remote_sglist; 689 memset(sgl, 0, 690 sizeof(io->io_hdr.remote_sglist)); 691 692 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 693 694 io->scsiio.kern_sg_entries = 695 msg_info.dt.kern_sg_entries; 696 io->scsiio.rem_sg_entries = 697 msg_info.dt.kern_sg_entries; 698 io->scsiio.kern_data_len = 699 msg_info.dt.kern_data_len; 700 io->scsiio.kern_total_len = 701 msg_info.dt.kern_total_len; 702 io->scsiio.kern_data_resid = 703 msg_info.dt.kern_data_resid; 704 io->scsiio.kern_rel_offset = 705 msg_info.dt.kern_rel_offset; 706 /* 707 * Clear out per-DMA flags. 708 */ 709 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 710 /* 711 * Add per-DMA flags that are set for this 712 * particular DMA request. 713 */ 714 io->io_hdr.flags |= msg_info.dt.flags & 715 CTL_FLAG_RDMA_MASK; 716 } else 717 sgl = (struct ctl_sg_entry *) 718 io->scsiio.kern_data_ptr; 719 720 for (i = msg_info.dt.sent_sg_entries, j = 0; 721 i < (msg_info.dt.sent_sg_entries + 722 msg_info.dt.cur_sg_entries); i++, j++) { 723 sgl[i].addr = msg_info.dt.sg_list[j].addr; 724 sgl[i].len = msg_info.dt.sg_list[j].len; 725 726#if 0 727 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 728 __func__, 729 msg_info.dt.sg_list[j].addr, 730 msg_info.dt.sg_list[j].len, 731 sgl[i].addr, sgl[i].len, j, i); 732#endif 733 } 734#if 0 735 memcpy(&sgl[msg_info.dt.sent_sg_entries], 736 msg_info.dt.sg_list, 737 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 738#endif 739 740 /* 741 * If this is the last piece of the I/O, we've got 742 * the full S/G list. Queue processing in the thread. 743 * Otherwise wait for the next piece. 744 */ 745 if (msg_info.dt.sg_last != 0) 746 ctl_enqueue_isc(io); 747 break; 748 } 749 /* Performed on the Serializing (primary) SC, XFER mode only */ 750 case CTL_MSG_DATAMOVE_DONE: { 751 if (msg_info.hdr.serializing_sc == NULL) { 752 printf("%s: serializing_sc == NULL!\n", 753 __func__); 754 /* XXX KDM now what? */ 755 break; 756 } 757 /* 758 * We grab the sense information here in case 759 * there was a failure, so we can return status 760 * back to the initiator. 761 */ 762 io = msg_info.hdr.serializing_sc; 763 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 764 io->io_hdr.status = msg_info.hdr.status; 765 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 766 io->scsiio.sense_len = msg_info.scsi.sense_len; 767 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 768 io->io_hdr.port_status = msg_info.scsi.fetd_status; 769 io->scsiio.residual = msg_info.scsi.residual; 770 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 771 sizeof(io->scsiio.sense_data)); 772 ctl_enqueue_isc(io); 773 break; 774 } 775 776 /* Preformed on Originating SC, SER_ONLY mode */ 777 case CTL_MSG_R2R: 778 io = msg_info.hdr.original_sc; 779 if (io == NULL) { 780 printf("%s: Major Bummer\n", __func__); 781 return; 782 } else { 783#if 0 784 printf("pOrig %x\n",(int) ctsio); 785#endif 786 } 787 io->io_hdr.msg_type = CTL_MSG_R2R; 788 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 789 ctl_enqueue_isc(io); 790 break; 791 792 /* 793 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 794 * mode. 795 * Performed on the Originating (i.e. secondary) SC in XFER 796 * mode 797 */ 798 case CTL_MSG_FINISH_IO: 799 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 800 ctl_isc_handler_finish_xfer(ctl_softc, 801 &msg_info); 802 else 803 ctl_isc_handler_finish_ser_only(ctl_softc, 804 &msg_info); 805 break; 806 807 /* Preformed on Originating SC */ 808 case CTL_MSG_BAD_JUJU: 809 io = msg_info.hdr.original_sc; 810 if (io == NULL) { 811 printf("%s: Bad JUJU!, original_sc is NULL!\n", 812 __func__); 813 break; 814 } 815 ctl_copy_sense_data(&msg_info, io); 816 /* 817 * IO should have already been cleaned up on other 818 * SC so clear this flag so we won't send a message 819 * back to finish the IO there. 820 */ 821 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 822 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 823 824 /* io = msg_info.hdr.serializing_sc; */ 825 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 826 ctl_enqueue_isc(io); 827 break; 828 829 /* Handle resets sent from the other side */ 830 case CTL_MSG_MANAGE_TASKS: { 831 struct ctl_taskio *taskio; 832 taskio = (struct ctl_taskio *)ctl_alloc_io( 833 (void *)ctl_softc->othersc_pool); 834 if (taskio == NULL) { 835 printf("ctl_isc_event_handler: can't allocate " 836 "ctl_io!\n"); 837 /* Bad Juju */ 838 /* should I just call the proper reset func 839 here??? */ 840 goto bailout; 841 } 842 ctl_zero_io((union ctl_io *)taskio); 843 taskio->io_hdr.io_type = CTL_IO_TASK; 844 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 845 taskio->io_hdr.nexus = msg_info.hdr.nexus; 846 taskio->task_action = msg_info.task.task_action; 847 taskio->tag_num = msg_info.task.tag_num; 848 taskio->tag_type = msg_info.task.tag_type; 849#ifdef CTL_TIME_IO 850 taskio->io_hdr.start_time = time_uptime; 851 getbintime(&taskio->io_hdr.start_bt); 852#if 0 853 cs_prof_gettime(&taskio->io_hdr.start_ticks); 854#endif 855#endif /* CTL_TIME_IO */ 856 ctl_run_task((union ctl_io *)taskio); 857 break; 858 } 859 /* Persistent Reserve action which needs attention */ 860 case CTL_MSG_PERS_ACTION: 861 presio = (struct ctl_prio *)ctl_alloc_io( 862 (void *)ctl_softc->othersc_pool); 863 if (presio == NULL) { 864 printf("ctl_isc_event_handler: can't allocate " 865 "ctl_io!\n"); 866 /* Bad Juju */ 867 /* Need to set busy and send msg back */ 868 goto bailout; 869 } 870 ctl_zero_io((union ctl_io *)presio); 871 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 872 presio->pr_msg = msg_info.pr; 873 ctl_enqueue_isc((union ctl_io *)presio); 874 break; 875 case CTL_MSG_SYNC_FE: 876 rcv_sync_msg = 1; 877 break; 878 case CTL_MSG_APS_LOCK: { 879 // It's quicker to execute this then to 880 // queue it. 881 struct ctl_lun *lun; 882 struct ctl_page_index *page_index; 883 struct copan_aps_subpage *current_sp; 884 uint32_t targ_lun; 885 886 targ_lun = msg_info.hdr.nexus.targ_mapped_lun; 887 lun = ctl_softc->ctl_luns[targ_lun]; 888 mtx_lock(&lun->lun_lock); 889 page_index = &lun->mode_pages.index[index_to_aps_page]; 890 current_sp = (struct copan_aps_subpage *) 891 (page_index->page_data + 892 (page_index->page_len * CTL_PAGE_CURRENT)); 893 894 current_sp->lock_active = msg_info.aps.lock_flag; 895 mtx_unlock(&lun->lun_lock); 896 break; 897 } 898 default: 899 printf("How did I get here?\n"); 900 } 901 } else if (event == CTL_HA_EVT_MSG_SENT) { 902 if (param != CTL_HA_STATUS_SUCCESS) { 903 printf("Bad status from ctl_ha_msg_send status %d\n", 904 param); 905 } 906 return; 907 } else if (event == CTL_HA_EVT_DISCONNECT) { 908 printf("CTL: Got a disconnect from Isc\n"); 909 return; 910 } else { 911 printf("ctl_isc_event_handler: Unknown event %d\n", event); 912 return; 913 } 914 915bailout: 916 return; 917} 918 919static void 920ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 921{ 922 struct scsi_sense_data *sense; 923 924 sense = &dest->scsiio.sense_data; 925 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 926 dest->scsiio.scsi_status = src->scsi.scsi_status; 927 dest->scsiio.sense_len = src->scsi.sense_len; 928 dest->io_hdr.status = src->hdr.status; 929} 930 931static int 932ctl_init(void) 933{ 934 struct ctl_softc *softc; 935 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 936 struct ctl_port *port; 937 uint8_t sc_id =0; 938 int i, error, retval; 939 //int isc_retval; 940 941 retval = 0; 942 ctl_pause_rtr = 0; 943 rcv_sync_msg = 0; 944 945 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 946 M_WAITOK | M_ZERO); 947 softc = control_softc; 948 949 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 950 "cam/ctl"); 951 952 softc->dev->si_drv1 = softc; 953 954 /* 955 * By default, return a "bad LUN" peripheral qualifier for unknown 956 * LUNs. The user can override this default using the tunable or 957 * sysctl. See the comment in ctl_inquiry_std() for more details. 958 */ 959 softc->inquiry_pq_no_lun = 1; 960 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 961 &softc->inquiry_pq_no_lun); 962 sysctl_ctx_init(&softc->sysctl_ctx); 963 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 964 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 965 CTLFLAG_RD, 0, "CAM Target Layer"); 966 967 if (softc->sysctl_tree == NULL) { 968 printf("%s: unable to allocate sysctl tree\n", __func__); 969 destroy_dev(softc->dev); 970 free(control_softc, M_DEVBUF); 971 control_softc = NULL; 972 return (ENOMEM); 973 } 974 975 SYSCTL_ADD_INT(&softc->sysctl_ctx, 976 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 977 "inquiry_pq_no_lun", CTLFLAG_RW, 978 &softc->inquiry_pq_no_lun, 0, 979 "Report no lun possible for invalid LUNs"); 980 981 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 982 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 983 softc->open_count = 0; 984 985 /* 986 * Default to actually sending a SYNCHRONIZE CACHE command down to 987 * the drive. 988 */ 989 softc->flags = CTL_FLAG_REAL_SYNC; 990 991 /* 992 * In Copan's HA scheme, the "master" and "slave" roles are 993 * figured out through the slot the controller is in. Although it 994 * is an active/active system, someone has to be in charge. 995 */ 996#ifdef NEEDTOPORT 997 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 998#endif 999 1000 if (sc_id == 0) { 1001 softc->flags |= CTL_FLAG_MASTER_SHELF; 1002 persis_offset = 0; 1003 } else 1004 persis_offset = CTL_MAX_INITIATORS; 1005 1006 /* 1007 * XXX KDM need to figure out where we want to get our target ID 1008 * and WWID. Is it different on each port? 1009 */ 1010 softc->target.id = 0; 1011 softc->target.wwid[0] = 0x12345678; 1012 softc->target.wwid[1] = 0x87654321; 1013 STAILQ_INIT(&softc->lun_list); 1014 STAILQ_INIT(&softc->pending_lun_queue); 1015 STAILQ_INIT(&softc->fe_list); 1016 STAILQ_INIT(&softc->port_list); 1017 STAILQ_INIT(&softc->be_list); 1018 STAILQ_INIT(&softc->io_pools); 1019 1020 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1021 &internal_pool)!= 0){ 1022 printf("ctl: can't allocate %d entry internal pool, " 1023 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1024 return (ENOMEM); 1025 } 1026 1027 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1028 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1029 printf("ctl: can't allocate %d entry emergency pool, " 1030 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1031 ctl_pool_free(internal_pool); 1032 return (ENOMEM); 1033 } 1034 1035 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1036 &other_pool) != 0) 1037 { 1038 printf("ctl: can't allocate %d entry other SC pool, " 1039 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1040 ctl_pool_free(internal_pool); 1041 ctl_pool_free(emergency_pool); 1042 return (ENOMEM); 1043 } 1044 1045 softc->internal_pool = internal_pool; 1046 softc->emergency_pool = emergency_pool; 1047 softc->othersc_pool = other_pool; 1048 1049 if (worker_threads <= 0) 1050 worker_threads = max(1, mp_ncpus / 4); 1051 if (worker_threads > CTL_MAX_THREADS) 1052 worker_threads = CTL_MAX_THREADS; 1053 1054 for (i = 0; i < worker_threads; i++) { 1055 struct ctl_thread *thr = &softc->threads[i]; 1056 1057 mtx_init(&thr->queue_lock, "CTL queue mutex", NULL, MTX_DEF); 1058 thr->ctl_softc = softc; 1059 STAILQ_INIT(&thr->incoming_queue); 1060 STAILQ_INIT(&thr->rtr_queue); 1061 STAILQ_INIT(&thr->done_queue); 1062 STAILQ_INIT(&thr->isc_queue); 1063 1064 error = kproc_kthread_add(ctl_work_thread, thr, 1065 &softc->ctl_proc, &thr->thread, 0, 0, "ctl", "work%d", i); 1066 if (error != 0) { 1067 printf("error creating CTL work thread!\n"); 1068 ctl_pool_free(internal_pool); 1069 ctl_pool_free(emergency_pool); 1070 ctl_pool_free(other_pool); 1071 return (error); 1072 } 1073 } 1074 error = kproc_kthread_add(ctl_lun_thread, softc, 1075 &softc->ctl_proc, NULL, 0, 0, "ctl", "lun"); 1076 if (error != 0) { 1077 printf("error creating CTL lun thread!\n"); 1078 ctl_pool_free(internal_pool); 1079 ctl_pool_free(emergency_pool); 1080 ctl_pool_free(other_pool); 1081 return (error); 1082 } 1083 if (bootverbose) 1084 printf("ctl: CAM Target Layer loaded\n"); 1085 1086 /* 1087 * Initialize the initiator and portname mappings 1088 */ 1089 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1090 1091 /* 1092 * Initialize the ioctl front end. 1093 */ 1094 ctl_frontend_register(&ioctl_frontend); 1095 port = &softc->ioctl_info.port; 1096 port->frontend = &ioctl_frontend; 1097 sprintf(softc->ioctl_info.port_name, "ioctl"); 1098 port->port_type = CTL_PORT_IOCTL; 1099 port->num_requested_ctl_io = 100; 1100 port->port_name = softc->ioctl_info.port_name; 1101 port->port_online = ctl_ioctl_online; 1102 port->port_offline = ctl_ioctl_offline; 1103 port->onoff_arg = &softc->ioctl_info; 1104 port->lun_enable = ctl_ioctl_lun_enable; 1105 port->lun_disable = ctl_ioctl_lun_disable; 1106 port->targ_lun_arg = &softc->ioctl_info; 1107 port->fe_datamove = ctl_ioctl_datamove; 1108 port->fe_done = ctl_ioctl_done; 1109 port->max_targets = 15; 1110 port->max_target_id = 15; 1111 1112 if (ctl_port_register(&softc->ioctl_info.port, 1113 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1114 printf("ctl: ioctl front end registration failed, will " 1115 "continue anyway\n"); 1116 } 1117 1118#ifdef CTL_IO_DELAY 1119 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1120 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1121 sizeof(struct callout), CTL_TIMER_BYTES); 1122 return (EINVAL); 1123 } 1124#endif /* CTL_IO_DELAY */ 1125 1126 return (0); 1127} 1128 1129void 1130ctl_shutdown(void) 1131{ 1132 struct ctl_softc *softc; 1133 struct ctl_lun *lun, *next_lun; 1134 struct ctl_io_pool *pool; 1135 1136 softc = (struct ctl_softc *)control_softc; 1137 1138 if (ctl_port_deregister(&softc->ioctl_info.port) != 0) 1139 printf("ctl: ioctl front end deregistration failed\n"); 1140 1141 mtx_lock(&softc->ctl_lock); 1142 1143 /* 1144 * Free up each LUN. 1145 */ 1146 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1147 next_lun = STAILQ_NEXT(lun, links); 1148 ctl_free_lun(lun); 1149 } 1150 1151 mtx_unlock(&softc->ctl_lock); 1152 1153 ctl_frontend_deregister(&ioctl_frontend); 1154 1155 /* 1156 * This will rip the rug out from under any FETDs or anyone else 1157 * that has a pool allocated. Since we increment our module 1158 * refcount any time someone outside the main CTL module allocates 1159 * a pool, we shouldn't have any problems here. The user won't be 1160 * able to unload the CTL module until client modules have 1161 * successfully unloaded. 1162 */ 1163 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1164 ctl_pool_free(pool); 1165 1166#if 0 1167 ctl_shutdown_thread(softc->work_thread); 1168 mtx_destroy(&softc->queue_lock); 1169#endif 1170 1171 mtx_destroy(&softc->pool_lock); 1172 mtx_destroy(&softc->ctl_lock); 1173 1174 destroy_dev(softc->dev); 1175 1176 sysctl_ctx_free(&softc->sysctl_ctx); 1177 1178 free(control_softc, M_DEVBUF); 1179 control_softc = NULL; 1180 1181 if (bootverbose) 1182 printf("ctl: CAM Target Layer unloaded\n"); 1183} 1184 1185static int 1186ctl_module_event_handler(module_t mod, int what, void *arg) 1187{ 1188 1189 switch (what) { 1190 case MOD_LOAD: 1191 return (ctl_init()); 1192 case MOD_UNLOAD: 1193 return (EBUSY); 1194 default: 1195 return (EOPNOTSUPP); 1196 } 1197} 1198 1199/* 1200 * XXX KDM should we do some access checks here? Bump a reference count to 1201 * prevent a CTL module from being unloaded while someone has it open? 1202 */ 1203static int 1204ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1205{ 1206 return (0); 1207} 1208 1209static int 1210ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1211{ 1212 return (0); 1213} 1214 1215int 1216ctl_port_enable(ctl_port_type port_type) 1217{ 1218 struct ctl_softc *softc; 1219 struct ctl_port *port; 1220 1221 if (ctl_is_single == 0) { 1222 union ctl_ha_msg msg_info; 1223 int isc_retval; 1224 1225#if 0 1226 printf("%s: HA mode, synchronizing frontend enable\n", 1227 __func__); 1228#endif 1229 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1230 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1231 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1232 printf("Sync msg send error retval %d\n", isc_retval); 1233 } 1234 if (!rcv_sync_msg) { 1235 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1236 sizeof(msg_info), 1); 1237 } 1238#if 0 1239 printf("CTL:Frontend Enable\n"); 1240 } else { 1241 printf("%s: single mode, skipping frontend synchronization\n", 1242 __func__); 1243#endif 1244 } 1245 1246 softc = control_softc; 1247 1248 STAILQ_FOREACH(port, &softc->port_list, links) { 1249 if (port_type & port->port_type) 1250 { 1251#if 0 1252 printf("port %d\n", port->targ_port); 1253#endif 1254 ctl_port_online(port); 1255 } 1256 } 1257 1258 return (0); 1259} 1260 1261int 1262ctl_port_disable(ctl_port_type port_type) 1263{ 1264 struct ctl_softc *softc; 1265 struct ctl_port *port; 1266 1267 softc = control_softc; 1268 1269 STAILQ_FOREACH(port, &softc->port_list, links) { 1270 if (port_type & port->port_type) 1271 ctl_port_offline(port); 1272 } 1273 1274 return (0); 1275} 1276 1277/* 1278 * Returns 0 for success, 1 for failure. 1279 * Currently the only failure mode is if there aren't enough entries 1280 * allocated. So, in case of a failure, look at num_entries_dropped, 1281 * reallocate and try again. 1282 */ 1283int 1284ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1285 int *num_entries_filled, int *num_entries_dropped, 1286 ctl_port_type port_type, int no_virtual) 1287{ 1288 struct ctl_softc *softc; 1289 struct ctl_port *port; 1290 int entries_dropped, entries_filled; 1291 int retval; 1292 int i; 1293 1294 softc = control_softc; 1295 1296 retval = 0; 1297 entries_filled = 0; 1298 entries_dropped = 0; 1299 1300 i = 0; 1301 mtx_lock(&softc->ctl_lock); 1302 STAILQ_FOREACH(port, &softc->port_list, links) { 1303 struct ctl_port_entry *entry; 1304 1305 if ((port->port_type & port_type) == 0) 1306 continue; 1307 1308 if ((no_virtual != 0) 1309 && (port->virtual_port != 0)) 1310 continue; 1311 1312 if (entries_filled >= num_entries_alloced) { 1313 entries_dropped++; 1314 continue; 1315 } 1316 entry = &entries[i]; 1317 1318 entry->port_type = port->port_type; 1319 strlcpy(entry->port_name, port->port_name, 1320 sizeof(entry->port_name)); 1321 entry->physical_port = port->physical_port; 1322 entry->virtual_port = port->virtual_port; 1323 entry->wwnn = port->wwnn; 1324 entry->wwpn = port->wwpn; 1325 1326 i++; 1327 entries_filled++; 1328 } 1329 1330 mtx_unlock(&softc->ctl_lock); 1331 1332 if (entries_dropped > 0) 1333 retval = 1; 1334 1335 *num_entries_dropped = entries_dropped; 1336 *num_entries_filled = entries_filled; 1337 1338 return (retval); 1339} 1340 1341static void 1342ctl_ioctl_online(void *arg) 1343{ 1344 struct ctl_ioctl_info *ioctl_info; 1345 1346 ioctl_info = (struct ctl_ioctl_info *)arg; 1347 1348 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1349} 1350 1351static void 1352ctl_ioctl_offline(void *arg) 1353{ 1354 struct ctl_ioctl_info *ioctl_info; 1355 1356 ioctl_info = (struct ctl_ioctl_info *)arg; 1357 1358 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1359} 1360 1361/* 1362 * Remove an initiator by port number and initiator ID. 1363 * Returns 0 for success, 1 for failure. 1364 */ 1365int 1366ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1367{ 1368 struct ctl_softc *softc; 1369 1370 softc = control_softc; 1371 1372 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1373 1374 if ((targ_port < 0) 1375 || (targ_port > CTL_MAX_PORTS)) { 1376 printf("%s: invalid port number %d\n", __func__, targ_port); 1377 return (1); 1378 } 1379 if (iid > CTL_MAX_INIT_PER_PORT) { 1380 printf("%s: initiator ID %u > maximun %u!\n", 1381 __func__, iid, CTL_MAX_INIT_PER_PORT); 1382 return (1); 1383 } 1384 1385 mtx_lock(&softc->ctl_lock); 1386 1387 softc->wwpn_iid[targ_port][iid].in_use = 0; 1388 1389 mtx_unlock(&softc->ctl_lock); 1390 1391 return (0); 1392} 1393 1394/* 1395 * Add an initiator to the initiator map. 1396 * Returns 0 for success, 1 for failure. 1397 */ 1398int 1399ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1400{ 1401 struct ctl_softc *softc; 1402 int retval; 1403 1404 softc = control_softc; 1405 1406 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1407 1408 retval = 0; 1409 1410 if ((targ_port < 0) 1411 || (targ_port > CTL_MAX_PORTS)) { 1412 printf("%s: invalid port number %d\n", __func__, targ_port); 1413 return (1); 1414 } 1415 if (iid > CTL_MAX_INIT_PER_PORT) { 1416 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1417 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1418 return (1); 1419 } 1420 1421 mtx_lock(&softc->ctl_lock); 1422 1423 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1424 /* 1425 * We don't treat this as an error. 1426 */ 1427 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1428 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1429 __func__, targ_port, iid, (uintmax_t)wwpn); 1430 goto bailout; 1431 } 1432 1433 /* 1434 * This is an error, but what do we do about it? The 1435 * driver is telling us we have a new WWPN for this 1436 * initiator ID, so we pretty much need to use it. 1437 */ 1438 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1439 "still at that address\n", __func__, targ_port, iid, 1440 (uintmax_t)wwpn, 1441 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1442 1443 /* 1444 * XXX KDM clear have_ca and ua_pending on each LUN for 1445 * this initiator. 1446 */ 1447 } 1448 softc->wwpn_iid[targ_port][iid].in_use = 1; 1449 softc->wwpn_iid[targ_port][iid].iid = iid; 1450 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1451 softc->wwpn_iid[targ_port][iid].port = targ_port; 1452 1453bailout: 1454 1455 mtx_unlock(&softc->ctl_lock); 1456 1457 return (retval); 1458} 1459 1460static int 1461ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1462{ 1463 return (0); 1464} 1465 1466static int 1467ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1468{ 1469 return (0); 1470} 1471 1472/* 1473 * Data movement routine for the CTL ioctl frontend port. 1474 */ 1475static int 1476ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1477{ 1478 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1479 struct ctl_sg_entry ext_entry, kern_entry; 1480 int ext_sglen, ext_sg_entries, kern_sg_entries; 1481 int ext_sg_start, ext_offset; 1482 int len_to_copy, len_copied; 1483 int kern_watermark, ext_watermark; 1484 int ext_sglist_malloced; 1485 int i, j; 1486 1487 ext_sglist_malloced = 0; 1488 ext_sg_start = 0; 1489 ext_offset = 0; 1490 1491 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1492 1493 /* 1494 * If this flag is set, fake the data transfer. 1495 */ 1496 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1497 ctsio->ext_data_filled = ctsio->ext_data_len; 1498 goto bailout; 1499 } 1500 1501 /* 1502 * To simplify things here, if we have a single buffer, stick it in 1503 * a S/G entry and just make it a single entry S/G list. 1504 */ 1505 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1506 int len_seen; 1507 1508 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1509 1510 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1511 M_WAITOK); 1512 ext_sglist_malloced = 1; 1513 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1514 ext_sglen) != 0) { 1515 ctl_set_internal_failure(ctsio, 1516 /*sks_valid*/ 0, 1517 /*retry_count*/ 0); 1518 goto bailout; 1519 } 1520 ext_sg_entries = ctsio->ext_sg_entries; 1521 len_seen = 0; 1522 for (i = 0; i < ext_sg_entries; i++) { 1523 if ((len_seen + ext_sglist[i].len) >= 1524 ctsio->ext_data_filled) { 1525 ext_sg_start = i; 1526 ext_offset = ctsio->ext_data_filled - len_seen; 1527 break; 1528 } 1529 len_seen += ext_sglist[i].len; 1530 } 1531 } else { 1532 ext_sglist = &ext_entry; 1533 ext_sglist->addr = ctsio->ext_data_ptr; 1534 ext_sglist->len = ctsio->ext_data_len; 1535 ext_sg_entries = 1; 1536 ext_sg_start = 0; 1537 ext_offset = ctsio->ext_data_filled; 1538 } 1539 1540 if (ctsio->kern_sg_entries > 0) { 1541 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1542 kern_sg_entries = ctsio->kern_sg_entries; 1543 } else { 1544 kern_sglist = &kern_entry; 1545 kern_sglist->addr = ctsio->kern_data_ptr; 1546 kern_sglist->len = ctsio->kern_data_len; 1547 kern_sg_entries = 1; 1548 } 1549 1550 1551 kern_watermark = 0; 1552 ext_watermark = ext_offset; 1553 len_copied = 0; 1554 for (i = ext_sg_start, j = 0; 1555 i < ext_sg_entries && j < kern_sg_entries;) { 1556 uint8_t *ext_ptr, *kern_ptr; 1557 1558 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1559 kern_sglist[j].len - kern_watermark); 1560 1561 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1562 ext_ptr = ext_ptr + ext_watermark; 1563 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1564 /* 1565 * XXX KDM fix this! 1566 */ 1567 panic("need to implement bus address support"); 1568#if 0 1569 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1570#endif 1571 } else 1572 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1573 kern_ptr = kern_ptr + kern_watermark; 1574 1575 kern_watermark += len_to_copy; 1576 ext_watermark += len_to_copy; 1577 1578 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1579 CTL_FLAG_DATA_IN) { 1580 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1581 "bytes to user\n", len_to_copy)); 1582 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1583 "to %p\n", kern_ptr, ext_ptr)); 1584 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1585 ctl_set_internal_failure(ctsio, 1586 /*sks_valid*/ 0, 1587 /*retry_count*/ 0); 1588 goto bailout; 1589 } 1590 } else { 1591 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1592 "bytes from user\n", len_to_copy)); 1593 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1594 "to %p\n", ext_ptr, kern_ptr)); 1595 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1596 ctl_set_internal_failure(ctsio, 1597 /*sks_valid*/ 0, 1598 /*retry_count*/0); 1599 goto bailout; 1600 } 1601 } 1602 1603 len_copied += len_to_copy; 1604 1605 if (ext_sglist[i].len == ext_watermark) { 1606 i++; 1607 ext_watermark = 0; 1608 } 1609 1610 if (kern_sglist[j].len == kern_watermark) { 1611 j++; 1612 kern_watermark = 0; 1613 } 1614 } 1615 1616 ctsio->ext_data_filled += len_copied; 1617 1618 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1619 "kern_sg_entries: %d\n", ext_sg_entries, 1620 kern_sg_entries)); 1621 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1622 "kern_data_len = %d\n", ctsio->ext_data_len, 1623 ctsio->kern_data_len)); 1624 1625 1626 /* XXX KDM set residual?? */ 1627bailout: 1628 1629 if (ext_sglist_malloced != 0) 1630 free(ext_sglist, M_CTL); 1631 1632 return (CTL_RETVAL_COMPLETE); 1633} 1634 1635/* 1636 * Serialize a command that went down the "wrong" side, and so was sent to 1637 * this controller for execution. The logic is a little different than the 1638 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1639 * sent back to the other side, but in the success case, we execute the 1640 * command on this side (XFER mode) or tell the other side to execute it 1641 * (SER_ONLY mode). 1642 */ 1643static int 1644ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio) 1645{ 1646 struct ctl_softc *ctl_softc; 1647 union ctl_ha_msg msg_info; 1648 struct ctl_lun *lun; 1649 int retval = 0; 1650 uint32_t targ_lun; 1651 1652 ctl_softc = control_softc; 1653 1654 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 1655 lun = ctl_softc->ctl_luns[targ_lun]; 1656 if (lun==NULL) 1657 { 1658 /* 1659 * Why isn't LUN defined? The other side wouldn't 1660 * send a cmd if the LUN is undefined. 1661 */ 1662 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1663 1664 /* "Logical unit not supported" */ 1665 ctl_set_sense_data(&msg_info.scsi.sense_data, 1666 lun, 1667 /*sense_format*/SSD_TYPE_NONE, 1668 /*current_error*/ 1, 1669 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1670 /*asc*/ 0x25, 1671 /*ascq*/ 0x00, 1672 SSD_ELEM_NONE); 1673 1674 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1675 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1676 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1677 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1678 msg_info.hdr.serializing_sc = NULL; 1679 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1680 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1681 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1682 } 1683 return(1); 1684 1685 } 1686 1687 mtx_lock(&lun->lun_lock); 1688 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1689 1690 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1691 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1692 ooa_links))) { 1693 case CTL_ACTION_BLOCK: 1694 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1695 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1696 blocked_links); 1697 break; 1698 case CTL_ACTION_PASS: 1699 case CTL_ACTION_SKIP: 1700 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1701 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1702 ctl_enqueue_rtr((union ctl_io *)ctsio); 1703 } else { 1704 1705 /* send msg back to other side */ 1706 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1707 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1708 msg_info.hdr.msg_type = CTL_MSG_R2R; 1709#if 0 1710 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1711#endif 1712 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1713 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1714 } 1715 } 1716 break; 1717 case CTL_ACTION_OVERLAP: 1718 /* OVERLAPPED COMMANDS ATTEMPTED */ 1719 ctl_set_sense_data(&msg_info.scsi.sense_data, 1720 lun, 1721 /*sense_format*/SSD_TYPE_NONE, 1722 /*current_error*/ 1, 1723 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1724 /*asc*/ 0x4E, 1725 /*ascq*/ 0x00, 1726 SSD_ELEM_NONE); 1727 1728 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1729 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1730 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1731 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1732 msg_info.hdr.serializing_sc = NULL; 1733 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1734#if 0 1735 printf("BAD JUJU:Major Bummer Overlap\n"); 1736#endif 1737 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1738 retval = 1; 1739 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1740 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1741 } 1742 break; 1743 case CTL_ACTION_OVERLAP_TAG: 1744 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1745 ctl_set_sense_data(&msg_info.scsi.sense_data, 1746 lun, 1747 /*sense_format*/SSD_TYPE_NONE, 1748 /*current_error*/ 1, 1749 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1750 /*asc*/ 0x4D, 1751 /*ascq*/ ctsio->tag_num & 0xff, 1752 SSD_ELEM_NONE); 1753 1754 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1755 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1756 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1757 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1758 msg_info.hdr.serializing_sc = NULL; 1759 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1760#if 0 1761 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1762#endif 1763 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1764 retval = 1; 1765 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1766 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1767 } 1768 break; 1769 case CTL_ACTION_ERROR: 1770 default: 1771 /* "Internal target failure" */ 1772 ctl_set_sense_data(&msg_info.scsi.sense_data, 1773 lun, 1774 /*sense_format*/SSD_TYPE_NONE, 1775 /*current_error*/ 1, 1776 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1777 /*asc*/ 0x44, 1778 /*ascq*/ 0x00, 1779 SSD_ELEM_NONE); 1780 1781 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1782 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1783 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1784 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1785 msg_info.hdr.serializing_sc = NULL; 1786 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1787#if 0 1788 printf("BAD JUJU:Major Bummer HW Error\n"); 1789#endif 1790 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1791 retval = 1; 1792 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1793 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1794 } 1795 break; 1796 } 1797 mtx_unlock(&lun->lun_lock); 1798 return (retval); 1799} 1800 1801static int 1802ctl_ioctl_submit_wait(union ctl_io *io) 1803{ 1804 struct ctl_fe_ioctl_params params; 1805 ctl_fe_ioctl_state last_state; 1806 int done, retval; 1807 1808 retval = 0; 1809 1810 bzero(¶ms, sizeof(params)); 1811 1812 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1813 cv_init(¶ms.sem, "ctlioccv"); 1814 params.state = CTL_IOCTL_INPROG; 1815 last_state = params.state; 1816 1817 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1818 1819 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1820 1821 /* This shouldn't happen */ 1822 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1823 return (retval); 1824 1825 done = 0; 1826 1827 do { 1828 mtx_lock(¶ms.ioctl_mtx); 1829 /* 1830 * Check the state here, and don't sleep if the state has 1831 * already changed (i.e. wakeup has already occured, but we 1832 * weren't waiting yet). 1833 */ 1834 if (params.state == last_state) { 1835 /* XXX KDM cv_wait_sig instead? */ 1836 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1837 } 1838 last_state = params.state; 1839 1840 switch (params.state) { 1841 case CTL_IOCTL_INPROG: 1842 /* Why did we wake up? */ 1843 /* XXX KDM error here? */ 1844 mtx_unlock(¶ms.ioctl_mtx); 1845 break; 1846 case CTL_IOCTL_DATAMOVE: 1847 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1848 1849 /* 1850 * change last_state back to INPROG to avoid 1851 * deadlock on subsequent data moves. 1852 */ 1853 params.state = last_state = CTL_IOCTL_INPROG; 1854 1855 mtx_unlock(¶ms.ioctl_mtx); 1856 ctl_ioctl_do_datamove(&io->scsiio); 1857 /* 1858 * Note that in some cases, most notably writes, 1859 * this will queue the I/O and call us back later. 1860 * In other cases, generally reads, this routine 1861 * will immediately call back and wake us up, 1862 * probably using our own context. 1863 */ 1864 io->scsiio.be_move_done(io); 1865 break; 1866 case CTL_IOCTL_DONE: 1867 mtx_unlock(¶ms.ioctl_mtx); 1868 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1869 done = 1; 1870 break; 1871 default: 1872 mtx_unlock(¶ms.ioctl_mtx); 1873 /* XXX KDM error here? */ 1874 break; 1875 } 1876 } while (done == 0); 1877 1878 mtx_destroy(¶ms.ioctl_mtx); 1879 cv_destroy(¶ms.sem); 1880 1881 return (CTL_RETVAL_COMPLETE); 1882} 1883 1884static void 1885ctl_ioctl_datamove(union ctl_io *io) 1886{ 1887 struct ctl_fe_ioctl_params *params; 1888 1889 params = (struct ctl_fe_ioctl_params *) 1890 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1891 1892 mtx_lock(¶ms->ioctl_mtx); 1893 params->state = CTL_IOCTL_DATAMOVE; 1894 cv_broadcast(¶ms->sem); 1895 mtx_unlock(¶ms->ioctl_mtx); 1896} 1897 1898static void 1899ctl_ioctl_done(union ctl_io *io) 1900{ 1901 struct ctl_fe_ioctl_params *params; 1902 1903 params = (struct ctl_fe_ioctl_params *) 1904 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1905 1906 mtx_lock(¶ms->ioctl_mtx); 1907 params->state = CTL_IOCTL_DONE; 1908 cv_broadcast(¶ms->sem); 1909 mtx_unlock(¶ms->ioctl_mtx); 1910} 1911 1912static void 1913ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1914{ 1915 struct ctl_fe_ioctl_startstop_info *sd_info; 1916 1917 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1918 1919 sd_info->hs_info.status = metatask->status; 1920 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1921 sd_info->hs_info.luns_complete = 1922 metatask->taskinfo.startstop.luns_complete; 1923 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1924 1925 cv_broadcast(&sd_info->sem); 1926} 1927 1928static void 1929ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1930{ 1931 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1932 1933 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1934 1935 mtx_lock(fe_bbr_info->lock); 1936 fe_bbr_info->bbr_info->status = metatask->status; 1937 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1938 fe_bbr_info->wakeup_done = 1; 1939 mtx_unlock(fe_bbr_info->lock); 1940 1941 cv_broadcast(&fe_bbr_info->sem); 1942} 1943 1944/* 1945 * Returns 0 for success, errno for failure. 1946 */ 1947static int 1948ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1949 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1950{ 1951 union ctl_io *io; 1952 int retval; 1953 1954 retval = 0; 1955 1956 mtx_lock(&lun->lun_lock); 1957 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1958 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1959 ooa_links)) { 1960 struct ctl_ooa_entry *entry; 1961 1962 /* 1963 * If we've got more than we can fit, just count the 1964 * remaining entries. 1965 */ 1966 if (*cur_fill_num >= ooa_hdr->alloc_num) 1967 continue; 1968 1969 entry = &kern_entries[*cur_fill_num]; 1970 1971 entry->tag_num = io->scsiio.tag_num; 1972 entry->lun_num = lun->lun; 1973#ifdef CTL_TIME_IO 1974 entry->start_bt = io->io_hdr.start_bt; 1975#endif 1976 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 1977 entry->cdb_len = io->scsiio.cdb_len; 1978 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1979 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1980 1981 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1982 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 1983 1984 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1985 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1986 1987 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1988 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 1989 1990 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1991 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1992 } 1993 mtx_unlock(&lun->lun_lock); 1994 1995 return (retval); 1996} 1997 1998static void * 1999ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2000 size_t error_str_len) 2001{ 2002 void *kptr; 2003 2004 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2005 2006 if (copyin(user_addr, kptr, len) != 0) { 2007 snprintf(error_str, error_str_len, "Error copying %d bytes " 2008 "from user address %p to kernel address %p", len, 2009 user_addr, kptr); 2010 free(kptr, M_CTL); 2011 return (NULL); 2012 } 2013 2014 return (kptr); 2015} 2016 2017static void 2018ctl_free_args(int num_args, struct ctl_be_arg *args) 2019{ 2020 int i; 2021 2022 if (args == NULL) 2023 return; 2024 2025 for (i = 0; i < num_args; i++) { 2026 free(args[i].kname, M_CTL); 2027 free(args[i].kvalue, M_CTL); 2028 } 2029 2030 free(args, M_CTL); 2031} 2032 2033static struct ctl_be_arg * 2034ctl_copyin_args(int num_args, struct ctl_be_arg *uargs, 2035 char *error_str, size_t error_str_len) 2036{ 2037 struct ctl_be_arg *args; 2038 int i; 2039 2040 args = ctl_copyin_alloc(uargs, num_args * sizeof(*args), 2041 error_str, error_str_len); 2042 2043 if (args == NULL) 2044 goto bailout; 2045 2046 for (i = 0; i < num_args; i++) { 2047 args[i].kname = NULL; 2048 args[i].kvalue = NULL; 2049 } 2050 2051 for (i = 0; i < num_args; i++) { 2052 uint8_t *tmpptr; 2053 2054 args[i].kname = ctl_copyin_alloc(args[i].name, 2055 args[i].namelen, error_str, error_str_len); 2056 if (args[i].kname == NULL) 2057 goto bailout; 2058 2059 if (args[i].kname[args[i].namelen - 1] != '\0') { 2060 snprintf(error_str, error_str_len, "Argument %d " 2061 "name is not NUL-terminated", i); 2062 goto bailout; 2063 } 2064 2065 if (args[i].flags & CTL_BEARG_RD) { 2066 tmpptr = ctl_copyin_alloc(args[i].value, 2067 args[i].vallen, error_str, error_str_len); 2068 if (tmpptr == NULL) 2069 goto bailout; 2070 if ((args[i].flags & CTL_BEARG_ASCII) 2071 && (tmpptr[args[i].vallen - 1] != '\0')) { 2072 snprintf(error_str, error_str_len, "Argument " 2073 "%d value is not NUL-terminated", i); 2074 goto bailout; 2075 } 2076 args[i].kvalue = tmpptr; 2077 } else { 2078 args[i].kvalue = malloc(args[i].vallen, 2079 M_CTL, M_WAITOK | M_ZERO); 2080 } 2081 } 2082 2083 return (args); 2084bailout: 2085 2086 ctl_free_args(num_args, args); 2087 2088 return (NULL); 2089} 2090 2091static void 2092ctl_copyout_args(int num_args, struct ctl_be_arg *args) 2093{ 2094 int i; 2095 2096 for (i = 0; i < num_args; i++) { 2097 if (args[i].flags & CTL_BEARG_WR) 2098 copyout(args[i].kvalue, args[i].value, args[i].vallen); 2099 } 2100} 2101 2102/* 2103 * Escape characters that are illegal or not recommended in XML. 2104 */ 2105int 2106ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2107{ 2108 int retval; 2109 2110 retval = 0; 2111 2112 for (; *str; str++) { 2113 switch (*str) { 2114 case '&': 2115 retval = sbuf_printf(sb, "&"); 2116 break; 2117 case '>': 2118 retval = sbuf_printf(sb, ">"); 2119 break; 2120 case '<': 2121 retval = sbuf_printf(sb, "<"); 2122 break; 2123 default: 2124 retval = sbuf_putc(sb, *str); 2125 break; 2126 } 2127 2128 if (retval != 0) 2129 break; 2130 2131 } 2132 2133 return (retval); 2134} 2135 2136static int 2137ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2138 struct thread *td) 2139{ 2140 struct ctl_softc *softc; 2141 int retval; 2142 2143 softc = control_softc; 2144 2145 retval = 0; 2146 2147 switch (cmd) { 2148 case CTL_IO: { 2149 union ctl_io *io; 2150 void *pool_tmp; 2151 2152 /* 2153 * If we haven't been "enabled", don't allow any SCSI I/O 2154 * to this FETD. 2155 */ 2156 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2157 retval = EPERM; 2158 break; 2159 } 2160 2161 io = ctl_alloc_io(softc->ioctl_info.port.ctl_pool_ref); 2162 if (io == NULL) { 2163 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2164 retval = ENOSPC; 2165 break; 2166 } 2167 2168 /* 2169 * Need to save the pool reference so it doesn't get 2170 * spammed by the user's ctl_io. 2171 */ 2172 pool_tmp = io->io_hdr.pool; 2173 2174 memcpy(io, (void *)addr, sizeof(*io)); 2175 2176 io->io_hdr.pool = pool_tmp; 2177 /* 2178 * No status yet, so make sure the status is set properly. 2179 */ 2180 io->io_hdr.status = CTL_STATUS_NONE; 2181 2182 /* 2183 * The user sets the initiator ID, target and LUN IDs. 2184 */ 2185 io->io_hdr.nexus.targ_port = softc->ioctl_info.port.targ_port; 2186 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2187 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2188 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2189 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2190 2191 retval = ctl_ioctl_submit_wait(io); 2192 2193 if (retval != 0) { 2194 ctl_free_io(io); 2195 break; 2196 } 2197 2198 memcpy((void *)addr, io, sizeof(*io)); 2199 2200 /* return this to our pool */ 2201 ctl_free_io(io); 2202 2203 break; 2204 } 2205 case CTL_ENABLE_PORT: 2206 case CTL_DISABLE_PORT: 2207 case CTL_SET_PORT_WWNS: { 2208 struct ctl_port *port; 2209 struct ctl_port_entry *entry; 2210 2211 entry = (struct ctl_port_entry *)addr; 2212 2213 mtx_lock(&softc->ctl_lock); 2214 STAILQ_FOREACH(port, &softc->port_list, links) { 2215 int action, done; 2216 2217 action = 0; 2218 done = 0; 2219 2220 if ((entry->port_type == CTL_PORT_NONE) 2221 && (entry->targ_port == port->targ_port)) { 2222 /* 2223 * If the user only wants to enable or 2224 * disable or set WWNs on a specific port, 2225 * do the operation and we're done. 2226 */ 2227 action = 1; 2228 done = 1; 2229 } else if (entry->port_type & port->port_type) { 2230 /* 2231 * Compare the user's type mask with the 2232 * particular frontend type to see if we 2233 * have a match. 2234 */ 2235 action = 1; 2236 done = 0; 2237 2238 /* 2239 * Make sure the user isn't trying to set 2240 * WWNs on multiple ports at the same time. 2241 */ 2242 if (cmd == CTL_SET_PORT_WWNS) { 2243 printf("%s: Can't set WWNs on " 2244 "multiple ports\n", __func__); 2245 retval = EINVAL; 2246 break; 2247 } 2248 } 2249 if (action != 0) { 2250 /* 2251 * XXX KDM we have to drop the lock here, 2252 * because the online/offline operations 2253 * can potentially block. We need to 2254 * reference count the frontends so they 2255 * can't go away, 2256 */ 2257 mtx_unlock(&softc->ctl_lock); 2258 2259 if (cmd == CTL_ENABLE_PORT) { 2260 struct ctl_lun *lun; 2261 2262 STAILQ_FOREACH(lun, &softc->lun_list, 2263 links) { 2264 port->lun_enable(port->targ_lun_arg, 2265 lun->target, 2266 lun->lun); 2267 } 2268 2269 ctl_port_online(port); 2270 } else if (cmd == CTL_DISABLE_PORT) { 2271 struct ctl_lun *lun; 2272 2273 ctl_port_offline(port); 2274 2275 STAILQ_FOREACH(lun, &softc->lun_list, 2276 links) { 2277 port->lun_disable( 2278 port->targ_lun_arg, 2279 lun->target, 2280 lun->lun); 2281 } 2282 } 2283 2284 mtx_lock(&softc->ctl_lock); 2285 2286 if (cmd == CTL_SET_PORT_WWNS) 2287 ctl_port_set_wwns(port, 2288 (entry->flags & CTL_PORT_WWNN_VALID) ? 2289 1 : 0, entry->wwnn, 2290 (entry->flags & CTL_PORT_WWPN_VALID) ? 2291 1 : 0, entry->wwpn); 2292 } 2293 if (done != 0) 2294 break; 2295 } 2296 mtx_unlock(&softc->ctl_lock); 2297 break; 2298 } 2299 case CTL_GET_PORT_LIST: { 2300 struct ctl_port *port; 2301 struct ctl_port_list *list; 2302 int i; 2303 2304 list = (struct ctl_port_list *)addr; 2305 2306 if (list->alloc_len != (list->alloc_num * 2307 sizeof(struct ctl_port_entry))) { 2308 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2309 "alloc_num %u * sizeof(struct ctl_port_entry) " 2310 "%zu\n", __func__, list->alloc_len, 2311 list->alloc_num, sizeof(struct ctl_port_entry)); 2312 retval = EINVAL; 2313 break; 2314 } 2315 list->fill_len = 0; 2316 list->fill_num = 0; 2317 list->dropped_num = 0; 2318 i = 0; 2319 mtx_lock(&softc->ctl_lock); 2320 STAILQ_FOREACH(port, &softc->port_list, links) { 2321 struct ctl_port_entry entry, *list_entry; 2322 2323 if (list->fill_num >= list->alloc_num) { 2324 list->dropped_num++; 2325 continue; 2326 } 2327 2328 entry.port_type = port->port_type; 2329 strlcpy(entry.port_name, port->port_name, 2330 sizeof(entry.port_name)); 2331 entry.targ_port = port->targ_port; 2332 entry.physical_port = port->physical_port; 2333 entry.virtual_port = port->virtual_port; 2334 entry.wwnn = port->wwnn; 2335 entry.wwpn = port->wwpn; 2336 if (port->status & CTL_PORT_STATUS_ONLINE) 2337 entry.online = 1; 2338 else 2339 entry.online = 0; 2340 2341 list_entry = &list->entries[i]; 2342 2343 retval = copyout(&entry, list_entry, sizeof(entry)); 2344 if (retval != 0) { 2345 printf("%s: CTL_GET_PORT_LIST: copyout " 2346 "returned %d\n", __func__, retval); 2347 break; 2348 } 2349 i++; 2350 list->fill_num++; 2351 list->fill_len += sizeof(entry); 2352 } 2353 mtx_unlock(&softc->ctl_lock); 2354 2355 /* 2356 * If this is non-zero, we had a copyout fault, so there's 2357 * probably no point in attempting to set the status inside 2358 * the structure. 2359 */ 2360 if (retval != 0) 2361 break; 2362 2363 if (list->dropped_num > 0) 2364 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2365 else 2366 list->status = CTL_PORT_LIST_OK; 2367 break; 2368 } 2369 case CTL_DUMP_OOA: { 2370 struct ctl_lun *lun; 2371 union ctl_io *io; 2372 char printbuf[128]; 2373 struct sbuf sb; 2374 2375 mtx_lock(&softc->ctl_lock); 2376 printf("Dumping OOA queues:\n"); 2377 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2378 mtx_lock(&lun->lun_lock); 2379 for (io = (union ctl_io *)TAILQ_FIRST( 2380 &lun->ooa_queue); io != NULL; 2381 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2382 ooa_links)) { 2383 sbuf_new(&sb, printbuf, sizeof(printbuf), 2384 SBUF_FIXEDLEN); 2385 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2386 (intmax_t)lun->lun, 2387 io->scsiio.tag_num, 2388 (io->io_hdr.flags & 2389 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2390 (io->io_hdr.flags & 2391 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2392 (io->io_hdr.flags & 2393 CTL_FLAG_ABORT) ? " ABORT" : "", 2394 (io->io_hdr.flags & 2395 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2396 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2397 sbuf_finish(&sb); 2398 printf("%s\n", sbuf_data(&sb)); 2399 } 2400 mtx_unlock(&lun->lun_lock); 2401 } 2402 printf("OOA queues dump done\n"); 2403 mtx_unlock(&softc->ctl_lock); 2404 break; 2405 } 2406 case CTL_GET_OOA: { 2407 struct ctl_lun *lun; 2408 struct ctl_ooa *ooa_hdr; 2409 struct ctl_ooa_entry *entries; 2410 uint32_t cur_fill_num; 2411 2412 ooa_hdr = (struct ctl_ooa *)addr; 2413 2414 if ((ooa_hdr->alloc_len == 0) 2415 || (ooa_hdr->alloc_num == 0)) { 2416 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2417 "must be non-zero\n", __func__, 2418 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2419 retval = EINVAL; 2420 break; 2421 } 2422 2423 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2424 sizeof(struct ctl_ooa_entry))) { 2425 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2426 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2427 __func__, ooa_hdr->alloc_len, 2428 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2429 retval = EINVAL; 2430 break; 2431 } 2432 2433 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2434 if (entries == NULL) { 2435 printf("%s: could not allocate %d bytes for OOA " 2436 "dump\n", __func__, ooa_hdr->alloc_len); 2437 retval = ENOMEM; 2438 break; 2439 } 2440 2441 mtx_lock(&softc->ctl_lock); 2442 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2443 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2444 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2445 mtx_unlock(&softc->ctl_lock); 2446 free(entries, M_CTL); 2447 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2448 __func__, (uintmax_t)ooa_hdr->lun_num); 2449 retval = EINVAL; 2450 break; 2451 } 2452 2453 cur_fill_num = 0; 2454 2455 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2456 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2457 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2458 ooa_hdr, entries); 2459 if (retval != 0) 2460 break; 2461 } 2462 if (retval != 0) { 2463 mtx_unlock(&softc->ctl_lock); 2464 free(entries, M_CTL); 2465 break; 2466 } 2467 } else { 2468 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2469 2470 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2471 entries); 2472 } 2473 mtx_unlock(&softc->ctl_lock); 2474 2475 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2476 ooa_hdr->fill_len = ooa_hdr->fill_num * 2477 sizeof(struct ctl_ooa_entry); 2478 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2479 if (retval != 0) { 2480 printf("%s: error copying out %d bytes for OOA dump\n", 2481 __func__, ooa_hdr->fill_len); 2482 } 2483 2484 getbintime(&ooa_hdr->cur_bt); 2485 2486 if (cur_fill_num > ooa_hdr->alloc_num) { 2487 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2488 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2489 } else { 2490 ooa_hdr->dropped_num = 0; 2491 ooa_hdr->status = CTL_OOA_OK; 2492 } 2493 2494 free(entries, M_CTL); 2495 break; 2496 } 2497 case CTL_CHECK_OOA: { 2498 union ctl_io *io; 2499 struct ctl_lun *lun; 2500 struct ctl_ooa_info *ooa_info; 2501 2502 2503 ooa_info = (struct ctl_ooa_info *)addr; 2504 2505 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2506 ooa_info->status = CTL_OOA_INVALID_LUN; 2507 break; 2508 } 2509 mtx_lock(&softc->ctl_lock); 2510 lun = softc->ctl_luns[ooa_info->lun_id]; 2511 if (lun == NULL) { 2512 mtx_unlock(&softc->ctl_lock); 2513 ooa_info->status = CTL_OOA_INVALID_LUN; 2514 break; 2515 } 2516 mtx_lock(&lun->lun_lock); 2517 mtx_unlock(&softc->ctl_lock); 2518 ooa_info->num_entries = 0; 2519 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2520 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2521 &io->io_hdr, ooa_links)) { 2522 ooa_info->num_entries++; 2523 } 2524 mtx_unlock(&lun->lun_lock); 2525 2526 ooa_info->status = CTL_OOA_SUCCESS; 2527 2528 break; 2529 } 2530 case CTL_HARD_START: 2531 case CTL_HARD_STOP: { 2532 struct ctl_fe_ioctl_startstop_info ss_info; 2533 struct cfi_metatask *metatask; 2534 struct mtx hs_mtx; 2535 2536 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2537 2538 cv_init(&ss_info.sem, "hard start/stop cv" ); 2539 2540 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2541 if (metatask == NULL) { 2542 retval = ENOMEM; 2543 mtx_destroy(&hs_mtx); 2544 break; 2545 } 2546 2547 if (cmd == CTL_HARD_START) 2548 metatask->tasktype = CFI_TASK_STARTUP; 2549 else 2550 metatask->tasktype = CFI_TASK_SHUTDOWN; 2551 2552 metatask->callback = ctl_ioctl_hard_startstop_callback; 2553 metatask->callback_arg = &ss_info; 2554 2555 cfi_action(metatask); 2556 2557 /* Wait for the callback */ 2558 mtx_lock(&hs_mtx); 2559 cv_wait_sig(&ss_info.sem, &hs_mtx); 2560 mtx_unlock(&hs_mtx); 2561 2562 /* 2563 * All information has been copied from the metatask by the 2564 * time cv_broadcast() is called, so we free the metatask here. 2565 */ 2566 cfi_free_metatask(metatask); 2567 2568 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2569 2570 mtx_destroy(&hs_mtx); 2571 break; 2572 } 2573 case CTL_BBRREAD: { 2574 struct ctl_bbrread_info *bbr_info; 2575 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2576 struct mtx bbr_mtx; 2577 struct cfi_metatask *metatask; 2578 2579 bbr_info = (struct ctl_bbrread_info *)addr; 2580 2581 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2582 2583 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2584 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2585 2586 fe_bbr_info.bbr_info = bbr_info; 2587 fe_bbr_info.lock = &bbr_mtx; 2588 2589 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2590 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2591 2592 if (metatask == NULL) { 2593 mtx_destroy(&bbr_mtx); 2594 cv_destroy(&fe_bbr_info.sem); 2595 retval = ENOMEM; 2596 break; 2597 } 2598 metatask->tasktype = CFI_TASK_BBRREAD; 2599 metatask->callback = ctl_ioctl_bbrread_callback; 2600 metatask->callback_arg = &fe_bbr_info; 2601 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2602 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2603 metatask->taskinfo.bbrread.len = bbr_info->len; 2604 2605 cfi_action(metatask); 2606 2607 mtx_lock(&bbr_mtx); 2608 while (fe_bbr_info.wakeup_done == 0) 2609 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2610 mtx_unlock(&bbr_mtx); 2611 2612 bbr_info->status = metatask->status; 2613 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2614 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2615 memcpy(&bbr_info->sense_data, 2616 &metatask->taskinfo.bbrread.sense_data, 2617 ctl_min(sizeof(bbr_info->sense_data), 2618 sizeof(metatask->taskinfo.bbrread.sense_data))); 2619 2620 cfi_free_metatask(metatask); 2621 2622 mtx_destroy(&bbr_mtx); 2623 cv_destroy(&fe_bbr_info.sem); 2624 2625 break; 2626 } 2627 case CTL_DELAY_IO: { 2628 struct ctl_io_delay_info *delay_info; 2629#ifdef CTL_IO_DELAY 2630 struct ctl_lun *lun; 2631#endif /* CTL_IO_DELAY */ 2632 2633 delay_info = (struct ctl_io_delay_info *)addr; 2634 2635#ifdef CTL_IO_DELAY 2636 mtx_lock(&softc->ctl_lock); 2637 2638 if ((delay_info->lun_id > CTL_MAX_LUNS) 2639 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2640 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2641 } else { 2642 lun = softc->ctl_luns[delay_info->lun_id]; 2643 mtx_lock(&lun->lun_lock); 2644 2645 delay_info->status = CTL_DELAY_STATUS_OK; 2646 2647 switch (delay_info->delay_type) { 2648 case CTL_DELAY_TYPE_CONT: 2649 break; 2650 case CTL_DELAY_TYPE_ONESHOT: 2651 break; 2652 default: 2653 delay_info->status = 2654 CTL_DELAY_STATUS_INVALID_TYPE; 2655 break; 2656 } 2657 2658 switch (delay_info->delay_loc) { 2659 case CTL_DELAY_LOC_DATAMOVE: 2660 lun->delay_info.datamove_type = 2661 delay_info->delay_type; 2662 lun->delay_info.datamove_delay = 2663 delay_info->delay_secs; 2664 break; 2665 case CTL_DELAY_LOC_DONE: 2666 lun->delay_info.done_type = 2667 delay_info->delay_type; 2668 lun->delay_info.done_delay = 2669 delay_info->delay_secs; 2670 break; 2671 default: 2672 delay_info->status = 2673 CTL_DELAY_STATUS_INVALID_LOC; 2674 break; 2675 } 2676 mtx_unlock(&lun->lun_lock); 2677 } 2678 2679 mtx_unlock(&softc->ctl_lock); 2680#else 2681 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2682#endif /* CTL_IO_DELAY */ 2683 break; 2684 } 2685 case CTL_REALSYNC_SET: { 2686 int *syncstate; 2687 2688 syncstate = (int *)addr; 2689 2690 mtx_lock(&softc->ctl_lock); 2691 switch (*syncstate) { 2692 case 0: 2693 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2694 break; 2695 case 1: 2696 softc->flags |= CTL_FLAG_REAL_SYNC; 2697 break; 2698 default: 2699 retval = EINVAL; 2700 break; 2701 } 2702 mtx_unlock(&softc->ctl_lock); 2703 break; 2704 } 2705 case CTL_REALSYNC_GET: { 2706 int *syncstate; 2707 2708 syncstate = (int*)addr; 2709 2710 mtx_lock(&softc->ctl_lock); 2711 if (softc->flags & CTL_FLAG_REAL_SYNC) 2712 *syncstate = 1; 2713 else 2714 *syncstate = 0; 2715 mtx_unlock(&softc->ctl_lock); 2716 2717 break; 2718 } 2719 case CTL_SETSYNC: 2720 case CTL_GETSYNC: { 2721 struct ctl_sync_info *sync_info; 2722 struct ctl_lun *lun; 2723 2724 sync_info = (struct ctl_sync_info *)addr; 2725 2726 mtx_lock(&softc->ctl_lock); 2727 lun = softc->ctl_luns[sync_info->lun_id]; 2728 if (lun == NULL) { 2729 mtx_unlock(&softc->ctl_lock); 2730 sync_info->status = CTL_GS_SYNC_NO_LUN; 2731 } 2732 /* 2733 * Get or set the sync interval. We're not bounds checking 2734 * in the set case, hopefully the user won't do something 2735 * silly. 2736 */ 2737 mtx_lock(&lun->lun_lock); 2738 mtx_unlock(&softc->ctl_lock); 2739 if (cmd == CTL_GETSYNC) 2740 sync_info->sync_interval = lun->sync_interval; 2741 else 2742 lun->sync_interval = sync_info->sync_interval; 2743 mtx_unlock(&lun->lun_lock); 2744 2745 sync_info->status = CTL_GS_SYNC_OK; 2746 2747 break; 2748 } 2749 case CTL_GETSTATS: { 2750 struct ctl_stats *stats; 2751 struct ctl_lun *lun; 2752 int i; 2753 2754 stats = (struct ctl_stats *)addr; 2755 2756 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2757 stats->alloc_len) { 2758 stats->status = CTL_SS_NEED_MORE_SPACE; 2759 stats->num_luns = softc->num_luns; 2760 break; 2761 } 2762 /* 2763 * XXX KDM no locking here. If the LUN list changes, 2764 * things can blow up. 2765 */ 2766 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2767 i++, lun = STAILQ_NEXT(lun, links)) { 2768 retval = copyout(&lun->stats, &stats->lun_stats[i], 2769 sizeof(lun->stats)); 2770 if (retval != 0) 2771 break; 2772 } 2773 stats->num_luns = softc->num_luns; 2774 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2775 softc->num_luns; 2776 stats->status = CTL_SS_OK; 2777#ifdef CTL_TIME_IO 2778 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2779#else 2780 stats->flags = CTL_STATS_FLAG_NONE; 2781#endif 2782 getnanouptime(&stats->timestamp); 2783 break; 2784 } 2785 case CTL_ERROR_INJECT: { 2786 struct ctl_error_desc *err_desc, *new_err_desc; 2787 struct ctl_lun *lun; 2788 2789 err_desc = (struct ctl_error_desc *)addr; 2790 2791 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2792 M_WAITOK | M_ZERO); 2793 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2794 2795 mtx_lock(&softc->ctl_lock); 2796 lun = softc->ctl_luns[err_desc->lun_id]; 2797 if (lun == NULL) { 2798 mtx_unlock(&softc->ctl_lock); 2799 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2800 __func__, (uintmax_t)err_desc->lun_id); 2801 retval = EINVAL; 2802 break; 2803 } 2804 mtx_lock(&lun->lun_lock); 2805 mtx_unlock(&softc->ctl_lock); 2806 2807 /* 2808 * We could do some checking here to verify the validity 2809 * of the request, but given the complexity of error 2810 * injection requests, the checking logic would be fairly 2811 * complex. 2812 * 2813 * For now, if the request is invalid, it just won't get 2814 * executed and might get deleted. 2815 */ 2816 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2817 2818 /* 2819 * XXX KDM check to make sure the serial number is unique, 2820 * in case we somehow manage to wrap. That shouldn't 2821 * happen for a very long time, but it's the right thing to 2822 * do. 2823 */ 2824 new_err_desc->serial = lun->error_serial; 2825 err_desc->serial = lun->error_serial; 2826 lun->error_serial++; 2827 2828 mtx_unlock(&lun->lun_lock); 2829 break; 2830 } 2831 case CTL_ERROR_INJECT_DELETE: { 2832 struct ctl_error_desc *delete_desc, *desc, *desc2; 2833 struct ctl_lun *lun; 2834 int delete_done; 2835 2836 delete_desc = (struct ctl_error_desc *)addr; 2837 delete_done = 0; 2838 2839 mtx_lock(&softc->ctl_lock); 2840 lun = softc->ctl_luns[delete_desc->lun_id]; 2841 if (lun == NULL) { 2842 mtx_unlock(&softc->ctl_lock); 2843 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2844 __func__, (uintmax_t)delete_desc->lun_id); 2845 retval = EINVAL; 2846 break; 2847 } 2848 mtx_lock(&lun->lun_lock); 2849 mtx_unlock(&softc->ctl_lock); 2850 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2851 if (desc->serial != delete_desc->serial) 2852 continue; 2853 2854 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2855 links); 2856 free(desc, M_CTL); 2857 delete_done = 1; 2858 } 2859 mtx_unlock(&lun->lun_lock); 2860 if (delete_done == 0) { 2861 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2862 "error serial %ju on LUN %u\n", __func__, 2863 delete_desc->serial, delete_desc->lun_id); 2864 retval = EINVAL; 2865 break; 2866 } 2867 break; 2868 } 2869 case CTL_DUMP_STRUCTS: { 2870 int i, j, k; 2871 struct ctl_port *port; 2872 struct ctl_frontend *fe; 2873 2874 printf("CTL IID to WWPN map start:\n"); 2875 for (i = 0; i < CTL_MAX_PORTS; i++) { 2876 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2877 if (softc->wwpn_iid[i][j].in_use == 0) 2878 continue; 2879 2880 printf("port %d iid %u WWPN %#jx\n", 2881 softc->wwpn_iid[i][j].port, 2882 softc->wwpn_iid[i][j].iid, 2883 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2884 } 2885 } 2886 printf("CTL IID to WWPN map end\n"); 2887 printf("CTL Persistent Reservation information start:\n"); 2888 for (i = 0; i < CTL_MAX_LUNS; i++) { 2889 struct ctl_lun *lun; 2890 2891 lun = softc->ctl_luns[i]; 2892 2893 if ((lun == NULL) 2894 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2895 continue; 2896 2897 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2898 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2899 if (lun->per_res[j+k].registered == 0) 2900 continue; 2901 printf("LUN %d port %d iid %d key " 2902 "%#jx\n", i, j, k, 2903 (uintmax_t)scsi_8btou64( 2904 lun->per_res[j+k].res_key.key)); 2905 } 2906 } 2907 } 2908 printf("CTL Persistent Reservation information end\n"); 2909 printf("CTL Ports:\n"); 2910 /* 2911 * XXX KDM calling this without a lock. We'd likely want 2912 * to drop the lock before calling the frontend's dump 2913 * routine anyway. 2914 */ 2915 STAILQ_FOREACH(port, &softc->port_list, links) { 2916 printf("Port %s Frontend %s Type %u pport %d vport %d WWNN " 2917 "%#jx WWPN %#jx\n", port->port_name, 2918 port->frontend->name, port->port_type, 2919 port->physical_port, port->virtual_port, 2920 (uintmax_t)port->wwnn, (uintmax_t)port->wwpn); 2921 } 2922 printf("CTL Port information end\n"); 2923 printf("CTL Frontends:\n"); 2924 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2925 printf("Frontend %s\n", fe->name); 2926 if (fe->fe_dump != NULL) 2927 fe->fe_dump(); 2928 } 2929 printf("CTL Frontend information end\n"); 2930 break; 2931 } 2932 case CTL_LUN_REQ: { 2933 struct ctl_lun_req *lun_req; 2934 struct ctl_backend_driver *backend; 2935 2936 lun_req = (struct ctl_lun_req *)addr; 2937 2938 backend = ctl_backend_find(lun_req->backend); 2939 if (backend == NULL) { 2940 lun_req->status = CTL_LUN_ERROR; 2941 snprintf(lun_req->error_str, 2942 sizeof(lun_req->error_str), 2943 "Backend \"%s\" not found.", 2944 lun_req->backend); 2945 break; 2946 } 2947 if (lun_req->num_be_args > 0) { 2948 lun_req->kern_be_args = ctl_copyin_args( 2949 lun_req->num_be_args, 2950 lun_req->be_args, 2951 lun_req->error_str, 2952 sizeof(lun_req->error_str)); 2953 if (lun_req->kern_be_args == NULL) { 2954 lun_req->status = CTL_LUN_ERROR; 2955 break; 2956 } 2957 } 2958 2959 retval = backend->ioctl(dev, cmd, addr, flag, td); 2960 2961 if (lun_req->num_be_args > 0) { 2962 ctl_copyout_args(lun_req->num_be_args, 2963 lun_req->kern_be_args); 2964 ctl_free_args(lun_req->num_be_args, 2965 lun_req->kern_be_args); 2966 } 2967 break; 2968 } 2969 case CTL_LUN_LIST: { 2970 struct sbuf *sb; 2971 struct ctl_lun *lun; 2972 struct ctl_lun_list *list; 2973 struct ctl_option *opt; 2974 2975 list = (struct ctl_lun_list *)addr; 2976 2977 /* 2978 * Allocate a fixed length sbuf here, based on the length 2979 * of the user's buffer. We could allocate an auto-extending 2980 * buffer, and then tell the user how much larger our 2981 * amount of data is than his buffer, but that presents 2982 * some problems: 2983 * 2984 * 1. The sbuf(9) routines use a blocking malloc, and so 2985 * we can't hold a lock while calling them with an 2986 * auto-extending buffer. 2987 * 2988 * 2. There is not currently a LUN reference counting 2989 * mechanism, outside of outstanding transactions on 2990 * the LUN's OOA queue. So a LUN could go away on us 2991 * while we're getting the LUN number, backend-specific 2992 * information, etc. Thus, given the way things 2993 * currently work, we need to hold the CTL lock while 2994 * grabbing LUN information. 2995 * 2996 * So, from the user's standpoint, the best thing to do is 2997 * allocate what he thinks is a reasonable buffer length, 2998 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2999 * double the buffer length and try again. (And repeat 3000 * that until he succeeds.) 3001 */ 3002 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3003 if (sb == NULL) { 3004 list->status = CTL_LUN_LIST_ERROR; 3005 snprintf(list->error_str, sizeof(list->error_str), 3006 "Unable to allocate %d bytes for LUN list", 3007 list->alloc_len); 3008 break; 3009 } 3010 3011 sbuf_printf(sb, "<ctllunlist>\n"); 3012 3013 mtx_lock(&softc->ctl_lock); 3014 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3015 mtx_lock(&lun->lun_lock); 3016 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3017 (uintmax_t)lun->lun); 3018 3019 /* 3020 * Bail out as soon as we see that we've overfilled 3021 * the buffer. 3022 */ 3023 if (retval != 0) 3024 break; 3025 3026 retval = sbuf_printf(sb, "\t<backend_type>%s" 3027 "</backend_type>\n", 3028 (lun->backend == NULL) ? "none" : 3029 lun->backend->name); 3030 3031 if (retval != 0) 3032 break; 3033 3034 retval = sbuf_printf(sb, "\t<lun_type>%d</lun_type>\n", 3035 lun->be_lun->lun_type); 3036 3037 if (retval != 0) 3038 break; 3039 3040 if (lun->backend == NULL) { 3041 retval = sbuf_printf(sb, "</lun>\n"); 3042 if (retval != 0) 3043 break; 3044 continue; 3045 } 3046 3047 retval = sbuf_printf(sb, "\t<size>%ju</size>\n", 3048 (lun->be_lun->maxlba > 0) ? 3049 lun->be_lun->maxlba + 1 : 0); 3050 3051 if (retval != 0) 3052 break; 3053 3054 retval = sbuf_printf(sb, "\t<blocksize>%u</blocksize>\n", 3055 lun->be_lun->blocksize); 3056 3057 if (retval != 0) 3058 break; 3059 3060 retval = sbuf_printf(sb, "\t<serial_number>"); 3061 3062 if (retval != 0) 3063 break; 3064 3065 retval = ctl_sbuf_printf_esc(sb, 3066 lun->be_lun->serial_num); 3067 3068 if (retval != 0) 3069 break; 3070 3071 retval = sbuf_printf(sb, "</serial_number>\n"); 3072 3073 if (retval != 0) 3074 break; 3075 3076 retval = sbuf_printf(sb, "\t<device_id>"); 3077 3078 if (retval != 0) 3079 break; 3080 3081 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3082 3083 if (retval != 0) 3084 break; 3085 3086 retval = sbuf_printf(sb, "</device_id>\n"); 3087 3088 if (retval != 0) 3089 break; 3090 3091 if (lun->backend->lun_info != NULL) { 3092 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3093 if (retval != 0) 3094 break; 3095 } 3096 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3097 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3098 opt->name, opt->value, opt->name); 3099 if (retval != 0) 3100 break; 3101 } 3102 3103 retval = sbuf_printf(sb, "</lun>\n"); 3104 3105 if (retval != 0) 3106 break; 3107 mtx_unlock(&lun->lun_lock); 3108 } 3109 if (lun != NULL) 3110 mtx_unlock(&lun->lun_lock); 3111 mtx_unlock(&softc->ctl_lock); 3112 3113 if ((retval != 0) 3114 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3115 retval = 0; 3116 sbuf_delete(sb); 3117 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3118 snprintf(list->error_str, sizeof(list->error_str), 3119 "Out of space, %d bytes is too small", 3120 list->alloc_len); 3121 break; 3122 } 3123 3124 sbuf_finish(sb); 3125 3126 retval = copyout(sbuf_data(sb), list->lun_xml, 3127 sbuf_len(sb) + 1); 3128 3129 list->fill_len = sbuf_len(sb) + 1; 3130 list->status = CTL_LUN_LIST_OK; 3131 sbuf_delete(sb); 3132 break; 3133 } 3134 case CTL_ISCSI: { 3135 struct ctl_iscsi *ci; 3136 struct ctl_frontend *fe; 3137 3138 ci = (struct ctl_iscsi *)addr; 3139 3140 fe = ctl_frontend_find("iscsi"); 3141 if (fe == NULL) { 3142 ci->status = CTL_ISCSI_ERROR; 3143 snprintf(ci->error_str, sizeof(ci->error_str), 3144 "Frontend \"iscsi\" not found."); 3145 break; 3146 } 3147 3148 retval = fe->ioctl(dev, cmd, addr, flag, td); 3149 break; 3150 } 3151 case CTL_PORT_REQ: { 3152 struct ctl_req *req; 3153 struct ctl_frontend *fe; 3154 3155 req = (struct ctl_req *)addr; 3156 3157 fe = ctl_frontend_find(req->driver); 3158 if (fe == NULL) { 3159 req->status = CTL_LUN_ERROR; 3160 snprintf(req->error_str, sizeof(req->error_str), 3161 "Frontend \"%s\" not found.", req->driver); 3162 break; 3163 } 3164 if (req->num_args > 0) { 3165 req->kern_args = ctl_copyin_args(req->num_args, 3166 req->args, req->error_str, sizeof(req->error_str)); 3167 if (req->kern_args == NULL) { 3168 req->status = CTL_LUN_ERROR; 3169 break; 3170 } 3171 } 3172 3173 retval = fe->ioctl(dev, cmd, addr, flag, td); 3174 3175 if (req->num_args > 0) { 3176 ctl_copyout_args(req->num_args, req->kern_args); 3177 ctl_free_args(req->num_args, req->kern_args); 3178 } 3179 break; 3180 } 3181 case CTL_PORT_LIST: { 3182 struct sbuf *sb; 3183 struct ctl_port *port; 3184 struct ctl_lun_list *list; 3185 struct ctl_option *opt; 3186 3187 list = (struct ctl_lun_list *)addr; 3188 3189 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3190 if (sb == NULL) { 3191 list->status = CTL_LUN_LIST_ERROR; 3192 snprintf(list->error_str, sizeof(list->error_str), 3193 "Unable to allocate %d bytes for LUN list", 3194 list->alloc_len); 3195 break; 3196 } 3197 3198 sbuf_printf(sb, "<ctlportlist>\n"); 3199 3200 mtx_lock(&softc->ctl_lock); 3201 STAILQ_FOREACH(port, &softc->port_list, links) { 3202 retval = sbuf_printf(sb, "<targ_port id=\"%ju\">\n", 3203 (uintmax_t)port->targ_port); 3204 3205 /* 3206 * Bail out as soon as we see that we've overfilled 3207 * the buffer. 3208 */ 3209 if (retval != 0) 3210 break; 3211 3212 retval = sbuf_printf(sb, "\t<frontend_type>%s" 3213 "</frontend_type>\n", port->frontend->name); 3214 if (retval != 0) 3215 break; 3216 3217 retval = sbuf_printf(sb, "\t<port_type>%d</port_type>\n", 3218 port->port_type); 3219 if (retval != 0) 3220 break; 3221 3222 retval = sbuf_printf(sb, "\t<online>%s</online>\n", 3223 (port->status & CTL_PORT_STATUS_ONLINE) ? "YES" : "NO"); 3224 if (retval != 0) 3225 break; 3226 3227 retval = sbuf_printf(sb, "\t<port_name>%s</port_name>\n", 3228 port->port_name); 3229 if (retval != 0) 3230 break; 3231 3232 retval = sbuf_printf(sb, "\t<physical_port>%d</physical_port>\n", 3233 port->physical_port); 3234 if (retval != 0) 3235 break; 3236 3237 retval = sbuf_printf(sb, "\t<virtual_port>%d</virtual_port>\n", 3238 port->virtual_port); 3239 if (retval != 0) 3240 break; 3241 3242 retval = sbuf_printf(sb, "\t<wwnn>%#jx</wwnn>\n", 3243 (uintmax_t)port->wwnn); 3244 if (retval != 0) 3245 break; 3246 3247 retval = sbuf_printf(sb, "\t<wwpn>%#jx</wwpn>\n", 3248 (uintmax_t)port->wwpn); 3249 if (retval != 0) 3250 break; 3251 3252 STAILQ_FOREACH(opt, &port->options, links) { 3253 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3254 opt->name, opt->value, opt->name); 3255 if (retval != 0) 3256 break; 3257 } 3258 3259 retval = sbuf_printf(sb, "</targ_port>\n"); 3260 if (retval != 0) 3261 break; 3262 } 3263 mtx_unlock(&softc->ctl_lock); 3264 3265 if ((retval != 0) 3266 || ((retval = sbuf_printf(sb, "</ctlportlist>\n")) != 0)) { 3267 retval = 0; 3268 sbuf_delete(sb); 3269 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3270 snprintf(list->error_str, sizeof(list->error_str), 3271 "Out of space, %d bytes is too small", 3272 list->alloc_len); 3273 break; 3274 } 3275 3276 sbuf_finish(sb); 3277 3278 retval = copyout(sbuf_data(sb), list->lun_xml, 3279 sbuf_len(sb) + 1); 3280 3281 list->fill_len = sbuf_len(sb) + 1; 3282 list->status = CTL_LUN_LIST_OK; 3283 sbuf_delete(sb); 3284 break; 3285 } 3286 default: { 3287 /* XXX KDM should we fix this? */ 3288#if 0 3289 struct ctl_backend_driver *backend; 3290 unsigned int type; 3291 int found; 3292 3293 found = 0; 3294 3295 /* 3296 * We encode the backend type as the ioctl type for backend 3297 * ioctls. So parse it out here, and then search for a 3298 * backend of this type. 3299 */ 3300 type = _IOC_TYPE(cmd); 3301 3302 STAILQ_FOREACH(backend, &softc->be_list, links) { 3303 if (backend->type == type) { 3304 found = 1; 3305 break; 3306 } 3307 } 3308 if (found == 0) { 3309 printf("ctl: unknown ioctl command %#lx or backend " 3310 "%d\n", cmd, type); 3311 retval = EINVAL; 3312 break; 3313 } 3314 retval = backend->ioctl(dev, cmd, addr, flag, td); 3315#endif 3316 retval = ENOTTY; 3317 break; 3318 } 3319 } 3320 return (retval); 3321} 3322 3323uint32_t 3324ctl_get_initindex(struct ctl_nexus *nexus) 3325{ 3326 if (nexus->targ_port < CTL_MAX_PORTS) 3327 return (nexus->initid.id + 3328 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3329 else 3330 return (nexus->initid.id + 3331 ((nexus->targ_port - CTL_MAX_PORTS) * 3332 CTL_MAX_INIT_PER_PORT)); 3333} 3334 3335uint32_t 3336ctl_get_resindex(struct ctl_nexus *nexus) 3337{ 3338 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3339} 3340 3341uint32_t 3342ctl_port_idx(int port_num) 3343{ 3344 if (port_num < CTL_MAX_PORTS) 3345 return(port_num); 3346 else 3347 return(port_num - CTL_MAX_PORTS); 3348} 3349 3350/* 3351 * Note: This only works for bitmask sizes that are at least 32 bits, and 3352 * that are a power of 2. 3353 */ 3354int 3355ctl_ffz(uint32_t *mask, uint32_t size) 3356{ 3357 uint32_t num_chunks, num_pieces; 3358 int i, j; 3359 3360 num_chunks = (size >> 5); 3361 if (num_chunks == 0) 3362 num_chunks++; 3363 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3364 3365 for (i = 0; i < num_chunks; i++) { 3366 for (j = 0; j < num_pieces; j++) { 3367 if ((mask[i] & (1 << j)) == 0) 3368 return ((i << 5) + j); 3369 } 3370 } 3371 3372 return (-1); 3373} 3374 3375int 3376ctl_set_mask(uint32_t *mask, uint32_t bit) 3377{ 3378 uint32_t chunk, piece; 3379 3380 chunk = bit >> 5; 3381 piece = bit % (sizeof(uint32_t) * 8); 3382 3383 if ((mask[chunk] & (1 << piece)) != 0) 3384 return (-1); 3385 else 3386 mask[chunk] |= (1 << piece); 3387 3388 return (0); 3389} 3390 3391int 3392ctl_clear_mask(uint32_t *mask, uint32_t bit) 3393{ 3394 uint32_t chunk, piece; 3395 3396 chunk = bit >> 5; 3397 piece = bit % (sizeof(uint32_t) * 8); 3398 3399 if ((mask[chunk] & (1 << piece)) == 0) 3400 return (-1); 3401 else 3402 mask[chunk] &= ~(1 << piece); 3403 3404 return (0); 3405} 3406 3407int 3408ctl_is_set(uint32_t *mask, uint32_t bit) 3409{ 3410 uint32_t chunk, piece; 3411 3412 chunk = bit >> 5; 3413 piece = bit % (sizeof(uint32_t) * 8); 3414 3415 if ((mask[chunk] & (1 << piece)) == 0) 3416 return (0); 3417 else 3418 return (1); 3419} 3420 3421#ifdef unused 3422/* 3423 * The bus, target and lun are optional, they can be filled in later. 3424 * can_wait is used to determine whether we can wait on the malloc or not. 3425 */ 3426union ctl_io* 3427ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3428 uint32_t targ_lun, int can_wait) 3429{ 3430 union ctl_io *io; 3431 3432 if (can_wait) 3433 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3434 else 3435 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3436 3437 if (io != NULL) { 3438 io->io_hdr.io_type = io_type; 3439 io->io_hdr.targ_port = targ_port; 3440 /* 3441 * XXX KDM this needs to change/go away. We need to move 3442 * to a preallocated pool of ctl_scsiio structures. 3443 */ 3444 io->io_hdr.nexus.targ_target.id = targ_target; 3445 io->io_hdr.nexus.targ_lun = targ_lun; 3446 } 3447 3448 return (io); 3449} 3450 3451void 3452ctl_kfree_io(union ctl_io *io) 3453{ 3454 free(io, M_CTL); 3455} 3456#endif /* unused */ 3457 3458/* 3459 * ctl_softc, pool_type, total_ctl_io are passed in. 3460 * npool is passed out. 3461 */ 3462int 3463ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3464 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3465{ 3466 uint32_t i; 3467 union ctl_io *cur_io, *next_io; 3468 struct ctl_io_pool *pool; 3469 int retval; 3470 3471 retval = 0; 3472 3473 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3474 M_NOWAIT | M_ZERO); 3475 if (pool == NULL) { 3476 retval = ENOMEM; 3477 goto bailout; 3478 } 3479 3480 pool->type = pool_type; 3481 pool->ctl_softc = ctl_softc; 3482 3483 mtx_lock(&ctl_softc->pool_lock); 3484 pool->id = ctl_softc->cur_pool_id++; 3485 mtx_unlock(&ctl_softc->pool_lock); 3486 3487 pool->flags = CTL_POOL_FLAG_NONE; 3488 pool->refcount = 1; /* Reference for validity. */ 3489 STAILQ_INIT(&pool->free_queue); 3490 3491 /* 3492 * XXX KDM other options here: 3493 * - allocate a page at a time 3494 * - allocate one big chunk of memory. 3495 * Page allocation might work well, but would take a little more 3496 * tracking. 3497 */ 3498 for (i = 0; i < total_ctl_io; i++) { 3499 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTLIO, 3500 M_NOWAIT); 3501 if (cur_io == NULL) { 3502 retval = ENOMEM; 3503 break; 3504 } 3505 cur_io->io_hdr.pool = pool; 3506 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3507 pool->total_ctl_io++; 3508 pool->free_ctl_io++; 3509 } 3510 3511 if (retval != 0) { 3512 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3513 cur_io != NULL; cur_io = next_io) { 3514 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3515 links); 3516 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3517 ctl_io_hdr, links); 3518 free(cur_io, M_CTLIO); 3519 } 3520 3521 free(pool, M_CTL); 3522 goto bailout; 3523 } 3524 mtx_lock(&ctl_softc->pool_lock); 3525 ctl_softc->num_pools++; 3526 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3527 /* 3528 * Increment our usage count if this is an external consumer, so we 3529 * can't get unloaded until the external consumer (most likely a 3530 * FETD) unloads and frees his pool. 3531 * 3532 * XXX KDM will this increment the caller's module use count, or 3533 * mine? 3534 */ 3535#if 0 3536 if ((pool_type != CTL_POOL_EMERGENCY) 3537 && (pool_type != CTL_POOL_INTERNAL) 3538 && (pool_type != CTL_POOL_4OTHERSC)) 3539 MOD_INC_USE_COUNT; 3540#endif 3541 3542 mtx_unlock(&ctl_softc->pool_lock); 3543 3544 *npool = pool; 3545 3546bailout: 3547 3548 return (retval); 3549} 3550 3551static int 3552ctl_pool_acquire(struct ctl_io_pool *pool) 3553{ 3554 3555 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3556 3557 if (pool->flags & CTL_POOL_FLAG_INVALID) 3558 return (EINVAL); 3559 3560 pool->refcount++; 3561 3562 return (0); 3563} 3564 3565static void 3566ctl_pool_release(struct ctl_io_pool *pool) 3567{ 3568 struct ctl_softc *ctl_softc = pool->ctl_softc; 3569 union ctl_io *io; 3570 3571 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3572 3573 if (--pool->refcount != 0) 3574 return; 3575 3576 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3577 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3578 links); 3579 free(io, M_CTLIO); 3580 } 3581 3582 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3583 ctl_softc->num_pools--; 3584 3585 /* 3586 * XXX KDM will this decrement the caller's usage count or mine? 3587 */ 3588#if 0 3589 if ((pool->type != CTL_POOL_EMERGENCY) 3590 && (pool->type != CTL_POOL_INTERNAL) 3591 && (pool->type != CTL_POOL_4OTHERSC)) 3592 MOD_DEC_USE_COUNT; 3593#endif 3594 3595 free(pool, M_CTL); 3596} 3597 3598void 3599ctl_pool_free(struct ctl_io_pool *pool) 3600{ 3601 struct ctl_softc *ctl_softc; 3602 3603 if (pool == NULL) 3604 return; 3605 3606 ctl_softc = pool->ctl_softc; 3607 mtx_lock(&ctl_softc->pool_lock); 3608 pool->flags |= CTL_POOL_FLAG_INVALID; 3609 ctl_pool_release(pool); 3610 mtx_unlock(&ctl_softc->pool_lock); 3611} 3612 3613/* 3614 * This routine does not block (except for spinlocks of course). 3615 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3616 * possible. 3617 */ 3618union ctl_io * 3619ctl_alloc_io(void *pool_ref) 3620{ 3621 union ctl_io *io; 3622 struct ctl_softc *ctl_softc; 3623 struct ctl_io_pool *pool, *npool; 3624 struct ctl_io_pool *emergency_pool; 3625 3626 pool = (struct ctl_io_pool *)pool_ref; 3627 3628 if (pool == NULL) { 3629 printf("%s: pool is NULL\n", __func__); 3630 return (NULL); 3631 } 3632 3633 emergency_pool = NULL; 3634 3635 ctl_softc = pool->ctl_softc; 3636 3637 mtx_lock(&ctl_softc->pool_lock); 3638 /* 3639 * First, try to get the io structure from the user's pool. 3640 */ 3641 if (ctl_pool_acquire(pool) == 0) { 3642 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3643 if (io != NULL) { 3644 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3645 pool->total_allocated++; 3646 pool->free_ctl_io--; 3647 mtx_unlock(&ctl_softc->pool_lock); 3648 return (io); 3649 } else 3650 ctl_pool_release(pool); 3651 } 3652 /* 3653 * If he doesn't have any io structures left, search for an 3654 * emergency pool and grab one from there. 3655 */ 3656 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3657 if (npool->type != CTL_POOL_EMERGENCY) 3658 continue; 3659 3660 if (ctl_pool_acquire(npool) != 0) 3661 continue; 3662 3663 emergency_pool = npool; 3664 3665 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3666 if (io != NULL) { 3667 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3668 npool->total_allocated++; 3669 npool->free_ctl_io--; 3670 mtx_unlock(&ctl_softc->pool_lock); 3671 return (io); 3672 } else 3673 ctl_pool_release(npool); 3674 } 3675 3676 /* Drop the spinlock before we malloc */ 3677 mtx_unlock(&ctl_softc->pool_lock); 3678 3679 /* 3680 * The emergency pool (if it exists) didn't have one, so try an 3681 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3682 */ 3683 io = (union ctl_io *)malloc(sizeof(*io), M_CTLIO, M_NOWAIT); 3684 if (io != NULL) { 3685 /* 3686 * If the emergency pool exists but is empty, add this 3687 * ctl_io to its list when it gets freed. 3688 */ 3689 if (emergency_pool != NULL) { 3690 mtx_lock(&ctl_softc->pool_lock); 3691 if (ctl_pool_acquire(emergency_pool) == 0) { 3692 io->io_hdr.pool = emergency_pool; 3693 emergency_pool->total_ctl_io++; 3694 /* 3695 * Need to bump this, otherwise 3696 * total_allocated and total_freed won't 3697 * match when we no longer have anything 3698 * outstanding. 3699 */ 3700 emergency_pool->total_allocated++; 3701 } 3702 mtx_unlock(&ctl_softc->pool_lock); 3703 } else 3704 io->io_hdr.pool = NULL; 3705 } 3706 3707 return (io); 3708} 3709 3710void 3711ctl_free_io(union ctl_io *io) 3712{ 3713 if (io == NULL) 3714 return; 3715 3716 /* 3717 * If this ctl_io has a pool, return it to that pool. 3718 */ 3719 if (io->io_hdr.pool != NULL) { 3720 struct ctl_io_pool *pool; 3721 3722 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3723 mtx_lock(&pool->ctl_softc->pool_lock); 3724 io->io_hdr.io_type = 0xff; 3725 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3726 pool->total_freed++; 3727 pool->free_ctl_io++; 3728 ctl_pool_release(pool); 3729 mtx_unlock(&pool->ctl_softc->pool_lock); 3730 } else { 3731 /* 3732 * Otherwise, just free it. We probably malloced it and 3733 * the emergency pool wasn't available. 3734 */ 3735 free(io, M_CTLIO); 3736 } 3737 3738} 3739 3740void 3741ctl_zero_io(union ctl_io *io) 3742{ 3743 void *pool_ref; 3744 3745 if (io == NULL) 3746 return; 3747 3748 /* 3749 * May need to preserve linked list pointers at some point too. 3750 */ 3751 pool_ref = io->io_hdr.pool; 3752 3753 memset(io, 0, sizeof(*io)); 3754 3755 io->io_hdr.pool = pool_ref; 3756} 3757 3758/* 3759 * This routine is currently used for internal copies of ctl_ios that need 3760 * to persist for some reason after we've already returned status to the 3761 * FETD. (Thus the flag set.) 3762 * 3763 * XXX XXX 3764 * Note that this makes a blind copy of all fields in the ctl_io, except 3765 * for the pool reference. This includes any memory that has been 3766 * allocated! That memory will no longer be valid after done has been 3767 * called, so this would be VERY DANGEROUS for command that actually does 3768 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3769 * start and stop commands, which don't transfer any data, so this is not a 3770 * problem. If it is used for anything else, the caller would also need to 3771 * allocate data buffer space and this routine would need to be modified to 3772 * copy the data buffer(s) as well. 3773 */ 3774void 3775ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3776{ 3777 void *pool_ref; 3778 3779 if ((src == NULL) 3780 || (dest == NULL)) 3781 return; 3782 3783 /* 3784 * May need to preserve linked list pointers at some point too. 3785 */ 3786 pool_ref = dest->io_hdr.pool; 3787 3788 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3789 3790 dest->io_hdr.pool = pool_ref; 3791 /* 3792 * We need to know that this is an internal copy, and doesn't need 3793 * to get passed back to the FETD that allocated it. 3794 */ 3795 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3796} 3797 3798#ifdef NEEDTOPORT 3799static void 3800ctl_update_power_subpage(struct copan_power_subpage *page) 3801{ 3802 int num_luns, num_partitions, config_type; 3803 struct ctl_softc *softc; 3804 cs_BOOL_t aor_present, shelf_50pct_power; 3805 cs_raidset_personality_t rs_type; 3806 int max_active_luns; 3807 3808 softc = control_softc; 3809 3810 /* subtract out the processor LUN */ 3811 num_luns = softc->num_luns - 1; 3812 /* 3813 * Default to 7 LUNs active, which was the only number we allowed 3814 * in the past. 3815 */ 3816 max_active_luns = 7; 3817 3818 num_partitions = config_GetRsPartitionInfo(); 3819 config_type = config_GetConfigType(); 3820 shelf_50pct_power = config_GetShelfPowerMode(); 3821 aor_present = config_IsAorRsPresent(); 3822 3823 rs_type = ddb_GetRsRaidType(1); 3824 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3825 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3826 EPRINT(0, "Unsupported RS type %d!", rs_type); 3827 } 3828 3829 3830 page->total_luns = num_luns; 3831 3832 switch (config_type) { 3833 case 40: 3834 /* 3835 * In a 40 drive configuration, it doesn't matter what DC 3836 * cards we have, whether we have AOR enabled or not, 3837 * partitioning or not, or what type of RAIDset we have. 3838 * In that scenario, we can power up every LUN we present 3839 * to the user. 3840 */ 3841 max_active_luns = num_luns; 3842 3843 break; 3844 case 64: 3845 if (shelf_50pct_power == CS_FALSE) { 3846 /* 25% power */ 3847 if (aor_present == CS_TRUE) { 3848 if (rs_type == 3849 CS_RAIDSET_PERSONALITY_RAID5) { 3850 max_active_luns = 7; 3851 } else if (rs_type == 3852 CS_RAIDSET_PERSONALITY_RAID1){ 3853 max_active_luns = 14; 3854 } else { 3855 /* XXX KDM now what?? */ 3856 } 3857 } else { 3858 if (rs_type == 3859 CS_RAIDSET_PERSONALITY_RAID5) { 3860 max_active_luns = 8; 3861 } else if (rs_type == 3862 CS_RAIDSET_PERSONALITY_RAID1){ 3863 max_active_luns = 16; 3864 } else { 3865 /* XXX KDM now what?? */ 3866 } 3867 } 3868 } else { 3869 /* 50% power */ 3870 /* 3871 * With 50% power in a 64 drive configuration, we 3872 * can power all LUNs we present. 3873 */ 3874 max_active_luns = num_luns; 3875 } 3876 break; 3877 case 112: 3878 if (shelf_50pct_power == CS_FALSE) { 3879 /* 25% power */ 3880 if (aor_present == CS_TRUE) { 3881 if (rs_type == 3882 CS_RAIDSET_PERSONALITY_RAID5) { 3883 max_active_luns = 7; 3884 } else if (rs_type == 3885 CS_RAIDSET_PERSONALITY_RAID1){ 3886 max_active_luns = 14; 3887 } else { 3888 /* XXX KDM now what?? */ 3889 } 3890 } else { 3891 if (rs_type == 3892 CS_RAIDSET_PERSONALITY_RAID5) { 3893 max_active_luns = 8; 3894 } else if (rs_type == 3895 CS_RAIDSET_PERSONALITY_RAID1){ 3896 max_active_luns = 16; 3897 } else { 3898 /* XXX KDM now what?? */ 3899 } 3900 } 3901 } else { 3902 /* 50% power */ 3903 if (aor_present == CS_TRUE) { 3904 if (rs_type == 3905 CS_RAIDSET_PERSONALITY_RAID5) { 3906 max_active_luns = 14; 3907 } else if (rs_type == 3908 CS_RAIDSET_PERSONALITY_RAID1){ 3909 /* 3910 * We're assuming here that disk 3911 * caching is enabled, and so we're 3912 * able to power up half of each 3913 * LUN, and cache all writes. 3914 */ 3915 max_active_luns = num_luns; 3916 } else { 3917 /* XXX KDM now what?? */ 3918 } 3919 } else { 3920 if (rs_type == 3921 CS_RAIDSET_PERSONALITY_RAID5) { 3922 max_active_luns = 15; 3923 } else if (rs_type == 3924 CS_RAIDSET_PERSONALITY_RAID1){ 3925 max_active_luns = 30; 3926 } else { 3927 /* XXX KDM now what?? */ 3928 } 3929 } 3930 } 3931 break; 3932 default: 3933 /* 3934 * In this case, we have an unknown configuration, so we 3935 * just use the default from above. 3936 */ 3937 break; 3938 } 3939 3940 page->max_active_luns = max_active_luns; 3941#if 0 3942 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3943 page->total_luns, page->max_active_luns); 3944#endif 3945} 3946#endif /* NEEDTOPORT */ 3947 3948/* 3949 * This routine could be used in the future to load default and/or saved 3950 * mode page parameters for a particuar lun. 3951 */ 3952static int 3953ctl_init_page_index(struct ctl_lun *lun) 3954{ 3955 int i; 3956 struct ctl_page_index *page_index; 3957 struct ctl_softc *softc; 3958 3959 memcpy(&lun->mode_pages.index, page_index_template, 3960 sizeof(page_index_template)); 3961 3962 softc = lun->ctl_softc; 3963 3964 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3965 3966 page_index = &lun->mode_pages.index[i]; 3967 /* 3968 * If this is a disk-only mode page, there's no point in 3969 * setting it up. For some pages, we have to have some 3970 * basic information about the disk in order to calculate the 3971 * mode page data. 3972 */ 3973 if ((lun->be_lun->lun_type != T_DIRECT) 3974 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3975 continue; 3976 3977 switch (page_index->page_code & SMPH_PC_MASK) { 3978 case SMS_FORMAT_DEVICE_PAGE: { 3979 struct scsi_format_page *format_page; 3980 3981 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3982 panic("subpage is incorrect!"); 3983 3984 /* 3985 * Sectors per track are set above. Bytes per 3986 * sector need to be set here on a per-LUN basis. 3987 */ 3988 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3989 &format_page_default, 3990 sizeof(format_page_default)); 3991 memcpy(&lun->mode_pages.format_page[ 3992 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3993 sizeof(format_page_changeable)); 3994 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3995 &format_page_default, 3996 sizeof(format_page_default)); 3997 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3998 &format_page_default, 3999 sizeof(format_page_default)); 4000 4001 format_page = &lun->mode_pages.format_page[ 4002 CTL_PAGE_CURRENT]; 4003 scsi_ulto2b(lun->be_lun->blocksize, 4004 format_page->bytes_per_sector); 4005 4006 format_page = &lun->mode_pages.format_page[ 4007 CTL_PAGE_DEFAULT]; 4008 scsi_ulto2b(lun->be_lun->blocksize, 4009 format_page->bytes_per_sector); 4010 4011 format_page = &lun->mode_pages.format_page[ 4012 CTL_PAGE_SAVED]; 4013 scsi_ulto2b(lun->be_lun->blocksize, 4014 format_page->bytes_per_sector); 4015 4016 page_index->page_data = 4017 (uint8_t *)lun->mode_pages.format_page; 4018 break; 4019 } 4020 case SMS_RIGID_DISK_PAGE: { 4021 struct scsi_rigid_disk_page *rigid_disk_page; 4022 uint32_t sectors_per_cylinder; 4023 uint64_t cylinders; 4024#ifndef __XSCALE__ 4025 int shift; 4026#endif /* !__XSCALE__ */ 4027 4028 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4029 panic("invalid subpage value %d", 4030 page_index->subpage); 4031 4032 /* 4033 * Rotation rate and sectors per track are set 4034 * above. We calculate the cylinders here based on 4035 * capacity. Due to the number of heads and 4036 * sectors per track we're using, smaller arrays 4037 * may turn out to have 0 cylinders. Linux and 4038 * FreeBSD don't pay attention to these mode pages 4039 * to figure out capacity, but Solaris does. It 4040 * seems to deal with 0 cylinders just fine, and 4041 * works out a fake geometry based on the capacity. 4042 */ 4043 memcpy(&lun->mode_pages.rigid_disk_page[ 4044 CTL_PAGE_CURRENT], &rigid_disk_page_default, 4045 sizeof(rigid_disk_page_default)); 4046 memcpy(&lun->mode_pages.rigid_disk_page[ 4047 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 4048 sizeof(rigid_disk_page_changeable)); 4049 memcpy(&lun->mode_pages.rigid_disk_page[ 4050 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 4051 sizeof(rigid_disk_page_default)); 4052 memcpy(&lun->mode_pages.rigid_disk_page[ 4053 CTL_PAGE_SAVED], &rigid_disk_page_default, 4054 sizeof(rigid_disk_page_default)); 4055 4056 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 4057 CTL_DEFAULT_HEADS; 4058 4059 /* 4060 * The divide method here will be more accurate, 4061 * probably, but results in floating point being 4062 * used in the kernel on i386 (__udivdi3()). On the 4063 * XScale, though, __udivdi3() is implemented in 4064 * software. 4065 * 4066 * The shift method for cylinder calculation is 4067 * accurate if sectors_per_cylinder is a power of 4068 * 2. Otherwise it might be slightly off -- you 4069 * might have a bit of a truncation problem. 4070 */ 4071#ifdef __XSCALE__ 4072 cylinders = (lun->be_lun->maxlba + 1) / 4073 sectors_per_cylinder; 4074#else 4075 for (shift = 31; shift > 0; shift--) { 4076 if (sectors_per_cylinder & (1 << shift)) 4077 break; 4078 } 4079 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4080#endif 4081 4082 /* 4083 * We've basically got 3 bytes, or 24 bits for the 4084 * cylinder size in the mode page. If we're over, 4085 * just round down to 2^24. 4086 */ 4087 if (cylinders > 0xffffff) 4088 cylinders = 0xffffff; 4089 4090 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4091 CTL_PAGE_CURRENT]; 4092 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4093 4094 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4095 CTL_PAGE_DEFAULT]; 4096 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4097 4098 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4099 CTL_PAGE_SAVED]; 4100 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4101 4102 page_index->page_data = 4103 (uint8_t *)lun->mode_pages.rigid_disk_page; 4104 break; 4105 } 4106 case SMS_CACHING_PAGE: { 4107 4108 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4109 panic("invalid subpage value %d", 4110 page_index->subpage); 4111 /* 4112 * Defaults should be okay here, no calculations 4113 * needed. 4114 */ 4115 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4116 &caching_page_default, 4117 sizeof(caching_page_default)); 4118 memcpy(&lun->mode_pages.caching_page[ 4119 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4120 sizeof(caching_page_changeable)); 4121 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4122 &caching_page_default, 4123 sizeof(caching_page_default)); 4124 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4125 &caching_page_default, 4126 sizeof(caching_page_default)); 4127 page_index->page_data = 4128 (uint8_t *)lun->mode_pages.caching_page; 4129 break; 4130 } 4131 case SMS_CONTROL_MODE_PAGE: { 4132 4133 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4134 panic("invalid subpage value %d", 4135 page_index->subpage); 4136 4137 /* 4138 * Defaults should be okay here, no calculations 4139 * needed. 4140 */ 4141 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4142 &control_page_default, 4143 sizeof(control_page_default)); 4144 memcpy(&lun->mode_pages.control_page[ 4145 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4146 sizeof(control_page_changeable)); 4147 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4148 &control_page_default, 4149 sizeof(control_page_default)); 4150 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4151 &control_page_default, 4152 sizeof(control_page_default)); 4153 page_index->page_data = 4154 (uint8_t *)lun->mode_pages.control_page; 4155 break; 4156 4157 } 4158 case SMS_VENDOR_SPECIFIC_PAGE:{ 4159 switch (page_index->subpage) { 4160 case PWR_SUBPAGE_CODE: { 4161 struct copan_power_subpage *current_page, 4162 *saved_page; 4163 4164 memcpy(&lun->mode_pages.power_subpage[ 4165 CTL_PAGE_CURRENT], 4166 &power_page_default, 4167 sizeof(power_page_default)); 4168 memcpy(&lun->mode_pages.power_subpage[ 4169 CTL_PAGE_CHANGEABLE], 4170 &power_page_changeable, 4171 sizeof(power_page_changeable)); 4172 memcpy(&lun->mode_pages.power_subpage[ 4173 CTL_PAGE_DEFAULT], 4174 &power_page_default, 4175 sizeof(power_page_default)); 4176 memcpy(&lun->mode_pages.power_subpage[ 4177 CTL_PAGE_SAVED], 4178 &power_page_default, 4179 sizeof(power_page_default)); 4180 page_index->page_data = 4181 (uint8_t *)lun->mode_pages.power_subpage; 4182 4183 current_page = (struct copan_power_subpage *) 4184 (page_index->page_data + 4185 (page_index->page_len * 4186 CTL_PAGE_CURRENT)); 4187 saved_page = (struct copan_power_subpage *) 4188 (page_index->page_data + 4189 (page_index->page_len * 4190 CTL_PAGE_SAVED)); 4191 break; 4192 } 4193 case APS_SUBPAGE_CODE: { 4194 struct copan_aps_subpage *current_page, 4195 *saved_page; 4196 4197 // This gets set multiple times but 4198 // it should always be the same. It's 4199 // only done during init so who cares. 4200 index_to_aps_page = i; 4201 4202 memcpy(&lun->mode_pages.aps_subpage[ 4203 CTL_PAGE_CURRENT], 4204 &aps_page_default, 4205 sizeof(aps_page_default)); 4206 memcpy(&lun->mode_pages.aps_subpage[ 4207 CTL_PAGE_CHANGEABLE], 4208 &aps_page_changeable, 4209 sizeof(aps_page_changeable)); 4210 memcpy(&lun->mode_pages.aps_subpage[ 4211 CTL_PAGE_DEFAULT], 4212 &aps_page_default, 4213 sizeof(aps_page_default)); 4214 memcpy(&lun->mode_pages.aps_subpage[ 4215 CTL_PAGE_SAVED], 4216 &aps_page_default, 4217 sizeof(aps_page_default)); 4218 page_index->page_data = 4219 (uint8_t *)lun->mode_pages.aps_subpage; 4220 4221 current_page = (struct copan_aps_subpage *) 4222 (page_index->page_data + 4223 (page_index->page_len * 4224 CTL_PAGE_CURRENT)); 4225 saved_page = (struct copan_aps_subpage *) 4226 (page_index->page_data + 4227 (page_index->page_len * 4228 CTL_PAGE_SAVED)); 4229 break; 4230 } 4231 case DBGCNF_SUBPAGE_CODE: { 4232 struct copan_debugconf_subpage *current_page, 4233 *saved_page; 4234 4235 memcpy(&lun->mode_pages.debugconf_subpage[ 4236 CTL_PAGE_CURRENT], 4237 &debugconf_page_default, 4238 sizeof(debugconf_page_default)); 4239 memcpy(&lun->mode_pages.debugconf_subpage[ 4240 CTL_PAGE_CHANGEABLE], 4241 &debugconf_page_changeable, 4242 sizeof(debugconf_page_changeable)); 4243 memcpy(&lun->mode_pages.debugconf_subpage[ 4244 CTL_PAGE_DEFAULT], 4245 &debugconf_page_default, 4246 sizeof(debugconf_page_default)); 4247 memcpy(&lun->mode_pages.debugconf_subpage[ 4248 CTL_PAGE_SAVED], 4249 &debugconf_page_default, 4250 sizeof(debugconf_page_default)); 4251 page_index->page_data = 4252 (uint8_t *)lun->mode_pages.debugconf_subpage; 4253 4254 current_page = (struct copan_debugconf_subpage *) 4255 (page_index->page_data + 4256 (page_index->page_len * 4257 CTL_PAGE_CURRENT)); 4258 saved_page = (struct copan_debugconf_subpage *) 4259 (page_index->page_data + 4260 (page_index->page_len * 4261 CTL_PAGE_SAVED)); 4262 break; 4263 } 4264 default: 4265 panic("invalid subpage value %d", 4266 page_index->subpage); 4267 break; 4268 } 4269 break; 4270 } 4271 default: 4272 panic("invalid page value %d", 4273 page_index->page_code & SMPH_PC_MASK); 4274 break; 4275 } 4276 } 4277 4278 return (CTL_RETVAL_COMPLETE); 4279} 4280 4281/* 4282 * LUN allocation. 4283 * 4284 * Requirements: 4285 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4286 * wants us to allocate the LUN and he can block. 4287 * - ctl_softc is always set 4288 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4289 * 4290 * Returns 0 for success, non-zero (errno) for failure. 4291 */ 4292static int 4293ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4294 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4295{ 4296 struct ctl_lun *nlun, *lun; 4297 struct ctl_port *port; 4298 struct scsi_vpd_id_descriptor *desc; 4299 struct scsi_vpd_id_t10 *t10id; 4300 const char *scsiname, *vendor; 4301 int lun_number, i, lun_malloced; 4302 int devidlen, idlen1, idlen2, len; 4303 4304 if (be_lun == NULL) 4305 return (EINVAL); 4306 4307 /* 4308 * We currently only support Direct Access or Processor LUN types. 4309 */ 4310 switch (be_lun->lun_type) { 4311 case T_DIRECT: 4312 break; 4313 case T_PROCESSOR: 4314 break; 4315 case T_SEQUENTIAL: 4316 case T_CHANGER: 4317 default: 4318 be_lun->lun_config_status(be_lun->be_lun, 4319 CTL_LUN_CONFIG_FAILURE); 4320 break; 4321 } 4322 if (ctl_lun == NULL) { 4323 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4324 lun_malloced = 1; 4325 } else { 4326 lun_malloced = 0; 4327 lun = ctl_lun; 4328 } 4329 4330 memset(lun, 0, sizeof(*lun)); 4331 if (lun_malloced) 4332 lun->flags = CTL_LUN_MALLOCED; 4333 4334 /* Generate LUN ID. */ 4335 devidlen = max(CTL_DEVID_MIN_LEN, 4336 strnlen(be_lun->device_id, CTL_DEVID_LEN)); 4337 idlen1 = sizeof(*t10id) + devidlen; 4338 len = sizeof(struct scsi_vpd_id_descriptor) + idlen1; 4339 scsiname = ctl_get_opt(&be_lun->options, "scsiname"); 4340 if (scsiname != NULL) { 4341 idlen2 = roundup2(strlen(scsiname) + 1, 4); 4342 len += sizeof(struct scsi_vpd_id_descriptor) + idlen2; 4343 } 4344 lun->lun_devid = malloc(sizeof(struct ctl_devid) + len, 4345 M_CTL, M_WAITOK | M_ZERO); 4346 lun->lun_devid->len = len; 4347 desc = (struct scsi_vpd_id_descriptor *)lun->lun_devid->data; 4348 desc->proto_codeset = SVPD_ID_CODESET_ASCII; 4349 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 4350 desc->length = idlen1; 4351 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 4352 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 4353 if ((vendor = ctl_get_opt(&be_lun->options, "vendor")) == NULL) { 4354 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 4355 } else { 4356 strncpy(t10id->vendor, vendor, 4357 min(sizeof(t10id->vendor), strlen(vendor))); 4358 } 4359 strncpy((char *)t10id->vendor_spec_id, 4360 (char *)be_lun->device_id, devidlen); 4361 if (scsiname != NULL) { 4362 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 4363 desc->length); 4364 desc->proto_codeset = SVPD_ID_CODESET_UTF8; 4365 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | 4366 SVPD_ID_TYPE_SCSI_NAME; 4367 desc->length = idlen2; 4368 strlcpy(desc->identifier, scsiname, idlen2); 4369 } 4370 4371 mtx_lock(&ctl_softc->ctl_lock); 4372 /* 4373 * See if the caller requested a particular LUN number. If so, see 4374 * if it is available. Otherwise, allocate the first available LUN. 4375 */ 4376 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4377 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4378 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4379 mtx_unlock(&ctl_softc->ctl_lock); 4380 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4381 printf("ctl: requested LUN ID %d is higher " 4382 "than CTL_MAX_LUNS - 1 (%d)\n", 4383 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4384 } else { 4385 /* 4386 * XXX KDM return an error, or just assign 4387 * another LUN ID in this case?? 4388 */ 4389 printf("ctl: requested LUN ID %d is already " 4390 "in use\n", be_lun->req_lun_id); 4391 } 4392 if (lun->flags & CTL_LUN_MALLOCED) 4393 free(lun, M_CTL); 4394 be_lun->lun_config_status(be_lun->be_lun, 4395 CTL_LUN_CONFIG_FAILURE); 4396 return (ENOSPC); 4397 } 4398 lun_number = be_lun->req_lun_id; 4399 } else { 4400 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4401 if (lun_number == -1) { 4402 mtx_unlock(&ctl_softc->ctl_lock); 4403 printf("ctl: can't allocate LUN on target %ju, out of " 4404 "LUNs\n", (uintmax_t)target_id.id); 4405 if (lun->flags & CTL_LUN_MALLOCED) 4406 free(lun, M_CTL); 4407 be_lun->lun_config_status(be_lun->be_lun, 4408 CTL_LUN_CONFIG_FAILURE); 4409 return (ENOSPC); 4410 } 4411 } 4412 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4413 4414 mtx_init(&lun->lun_lock, "CTL LUN", NULL, MTX_DEF); 4415 lun->target = target_id; 4416 lun->lun = lun_number; 4417 lun->be_lun = be_lun; 4418 /* 4419 * The processor LUN is always enabled. Disk LUNs come on line 4420 * disabled, and must be enabled by the backend. 4421 */ 4422 lun->flags |= CTL_LUN_DISABLED; 4423 lun->backend = be_lun->be; 4424 be_lun->ctl_lun = lun; 4425 be_lun->lun_id = lun_number; 4426 atomic_add_int(&be_lun->be->num_luns, 1); 4427 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4428 lun->flags |= CTL_LUN_STOPPED; 4429 4430 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4431 lun->flags |= CTL_LUN_INOPERABLE; 4432 4433 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4434 lun->flags |= CTL_LUN_PRIMARY_SC; 4435 4436 lun->ctl_softc = ctl_softc; 4437 TAILQ_INIT(&lun->ooa_queue); 4438 TAILQ_INIT(&lun->blocked_queue); 4439 STAILQ_INIT(&lun->error_list); 4440 4441 /* 4442 * Initialize the mode page index. 4443 */ 4444 ctl_init_page_index(lun); 4445 4446 /* 4447 * Set the poweron UA for all initiators on this LUN only. 4448 */ 4449 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4450 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4451 4452 /* 4453 * Now, before we insert this lun on the lun list, set the lun 4454 * inventory changed UA for all other luns. 4455 */ 4456 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4457 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4458 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4459 } 4460 } 4461 4462 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4463 4464 ctl_softc->ctl_luns[lun_number] = lun; 4465 4466 ctl_softc->num_luns++; 4467 4468 /* Setup statistics gathering */ 4469 lun->stats.device_type = be_lun->lun_type; 4470 lun->stats.lun_number = lun_number; 4471 if (lun->stats.device_type == T_DIRECT) 4472 lun->stats.blocksize = be_lun->blocksize; 4473 else 4474 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4475 for (i = 0;i < CTL_MAX_PORTS;i++) 4476 lun->stats.ports[i].targ_port = i; 4477 4478 mtx_unlock(&ctl_softc->ctl_lock); 4479 4480 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4481 4482 /* 4483 * Run through each registered FETD and bring it online if it isn't 4484 * already. Enable the target ID if it hasn't been enabled, and 4485 * enable this particular LUN. 4486 */ 4487 STAILQ_FOREACH(port, &ctl_softc->port_list, links) { 4488 int retval; 4489 4490 retval = port->lun_enable(port->targ_lun_arg, target_id,lun_number); 4491 if (retval != 0) { 4492 printf("ctl_alloc_lun: FETD %s port %d returned error " 4493 "%d for lun_enable on target %ju lun %d\n", 4494 port->port_name, port->targ_port, retval, 4495 (uintmax_t)target_id.id, lun_number); 4496 } else 4497 port->status |= CTL_PORT_STATUS_LUN_ONLINE; 4498 } 4499 return (0); 4500} 4501 4502/* 4503 * Delete a LUN. 4504 * Assumptions: 4505 * - LUN has already been marked invalid and any pending I/O has been taken 4506 * care of. 4507 */ 4508static int 4509ctl_free_lun(struct ctl_lun *lun) 4510{ 4511 struct ctl_softc *softc; 4512#if 0 4513 struct ctl_port *port; 4514#endif 4515 struct ctl_lun *nlun; 4516 int i; 4517 4518 softc = lun->ctl_softc; 4519 4520 mtx_assert(&softc->ctl_lock, MA_OWNED); 4521 4522 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4523 4524 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4525 4526 softc->ctl_luns[lun->lun] = NULL; 4527 4528 if (!TAILQ_EMPTY(&lun->ooa_queue)) 4529 panic("Freeing a LUN %p with outstanding I/O!!\n", lun); 4530 4531 softc->num_luns--; 4532 4533 /* 4534 * XXX KDM this scheme only works for a single target/multiple LUN 4535 * setup. It needs to be revamped for a multiple target scheme. 4536 * 4537 * XXX KDM this results in port->lun_disable() getting called twice, 4538 * once when ctl_disable_lun() is called, and a second time here. 4539 * We really need to re-think the LUN disable semantics. There 4540 * should probably be several steps/levels to LUN removal: 4541 * - disable 4542 * - invalidate 4543 * - free 4544 * 4545 * Right now we only have a disable method when communicating to 4546 * the front end ports, at least for individual LUNs. 4547 */ 4548#if 0 4549 STAILQ_FOREACH(port, &softc->port_list, links) { 4550 int retval; 4551 4552 retval = port->lun_disable(port->targ_lun_arg, lun->target, 4553 lun->lun); 4554 if (retval != 0) { 4555 printf("ctl_free_lun: FETD %s port %d returned error " 4556 "%d for lun_disable on target %ju lun %jd\n", 4557 port->port_name, port->targ_port, retval, 4558 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4559 } 4560 4561 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4562 port->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4563 4564 retval = port->targ_disable(port->targ_lun_arg,lun->target); 4565 if (retval != 0) { 4566 printf("ctl_free_lun: FETD %s port %d " 4567 "returned error %d for targ_disable on " 4568 "target %ju\n", port->port_name, 4569 port->targ_port, retval, 4570 (uintmax_t)lun->target.id); 4571 } else 4572 port->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4573 4574 if ((port->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4575 continue; 4576 4577#if 0 4578 port->port_offline(port->onoff_arg); 4579 port->status &= ~CTL_PORT_STATUS_ONLINE; 4580#endif 4581 } 4582 } 4583#endif 4584 4585 /* 4586 * Tell the backend to free resources, if this LUN has a backend. 4587 */ 4588 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4589 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4590 4591 mtx_destroy(&lun->lun_lock); 4592 free(lun->lun_devid, M_CTL); 4593 if (lun->flags & CTL_LUN_MALLOCED) 4594 free(lun, M_CTL); 4595 4596 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4597 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4598 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4599 } 4600 } 4601 4602 return (0); 4603} 4604 4605static void 4606ctl_create_lun(struct ctl_be_lun *be_lun) 4607{ 4608 struct ctl_softc *ctl_softc; 4609 4610 ctl_softc = control_softc; 4611 4612 /* 4613 * ctl_alloc_lun() should handle all potential failure cases. 4614 */ 4615 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4616} 4617 4618int 4619ctl_add_lun(struct ctl_be_lun *be_lun) 4620{ 4621 struct ctl_softc *ctl_softc = control_softc; 4622 4623 mtx_lock(&ctl_softc->ctl_lock); 4624 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4625 mtx_unlock(&ctl_softc->ctl_lock); 4626 wakeup(&ctl_softc->pending_lun_queue); 4627 4628 return (0); 4629} 4630 4631int 4632ctl_enable_lun(struct ctl_be_lun *be_lun) 4633{ 4634 struct ctl_softc *ctl_softc; 4635 struct ctl_port *port, *nport; 4636 struct ctl_lun *lun; 4637 int retval; 4638 4639 ctl_softc = control_softc; 4640 4641 lun = (struct ctl_lun *)be_lun->ctl_lun; 4642 4643 mtx_lock(&ctl_softc->ctl_lock); 4644 mtx_lock(&lun->lun_lock); 4645 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4646 /* 4647 * eh? Why did we get called if the LUN is already 4648 * enabled? 4649 */ 4650 mtx_unlock(&lun->lun_lock); 4651 mtx_unlock(&ctl_softc->ctl_lock); 4652 return (0); 4653 } 4654 lun->flags &= ~CTL_LUN_DISABLED; 4655 mtx_unlock(&lun->lun_lock); 4656 4657 for (port = STAILQ_FIRST(&ctl_softc->port_list); port != NULL; port = nport) { 4658 nport = STAILQ_NEXT(port, links); 4659 4660 /* 4661 * Drop the lock while we call the FETD's enable routine. 4662 * This can lead to a callback into CTL (at least in the 4663 * case of the internal initiator frontend. 4664 */ 4665 mtx_unlock(&ctl_softc->ctl_lock); 4666 retval = port->lun_enable(port->targ_lun_arg, lun->target,lun->lun); 4667 mtx_lock(&ctl_softc->ctl_lock); 4668 if (retval != 0) { 4669 printf("%s: FETD %s port %d returned error " 4670 "%d for lun_enable on target %ju lun %jd\n", 4671 __func__, port->port_name, port->targ_port, retval, 4672 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4673 } 4674#if 0 4675 else { 4676 /* NOTE: TODO: why does lun enable affect port status? */ 4677 port->status |= CTL_PORT_STATUS_LUN_ONLINE; 4678 } 4679#endif 4680 } 4681 4682 mtx_unlock(&ctl_softc->ctl_lock); 4683 4684 return (0); 4685} 4686 4687int 4688ctl_disable_lun(struct ctl_be_lun *be_lun) 4689{ 4690 struct ctl_softc *ctl_softc; 4691 struct ctl_port *port; 4692 struct ctl_lun *lun; 4693 int retval; 4694 4695 ctl_softc = control_softc; 4696 4697 lun = (struct ctl_lun *)be_lun->ctl_lun; 4698 4699 mtx_lock(&ctl_softc->ctl_lock); 4700 mtx_lock(&lun->lun_lock); 4701 if (lun->flags & CTL_LUN_DISABLED) { 4702 mtx_unlock(&lun->lun_lock); 4703 mtx_unlock(&ctl_softc->ctl_lock); 4704 return (0); 4705 } 4706 lun->flags |= CTL_LUN_DISABLED; 4707 mtx_unlock(&lun->lun_lock); 4708 4709 STAILQ_FOREACH(port, &ctl_softc->port_list, links) { 4710 mtx_unlock(&ctl_softc->ctl_lock); 4711 /* 4712 * Drop the lock before we call the frontend's disable 4713 * routine, to avoid lock order reversals. 4714 * 4715 * XXX KDM what happens if the frontend list changes while 4716 * we're traversing it? It's unlikely, but should be handled. 4717 */ 4718 retval = port->lun_disable(port->targ_lun_arg, lun->target, 4719 lun->lun); 4720 mtx_lock(&ctl_softc->ctl_lock); 4721 if (retval != 0) { 4722 printf("ctl_alloc_lun: FETD %s port %d returned error " 4723 "%d for lun_disable on target %ju lun %jd\n", 4724 port->port_name, port->targ_port, retval, 4725 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4726 } 4727 } 4728 4729 mtx_unlock(&ctl_softc->ctl_lock); 4730 4731 return (0); 4732} 4733 4734int 4735ctl_start_lun(struct ctl_be_lun *be_lun) 4736{ 4737 struct ctl_softc *ctl_softc; 4738 struct ctl_lun *lun; 4739 4740 ctl_softc = control_softc; 4741 4742 lun = (struct ctl_lun *)be_lun->ctl_lun; 4743 4744 mtx_lock(&lun->lun_lock); 4745 lun->flags &= ~CTL_LUN_STOPPED; 4746 mtx_unlock(&lun->lun_lock); 4747 4748 return (0); 4749} 4750 4751int 4752ctl_stop_lun(struct ctl_be_lun *be_lun) 4753{ 4754 struct ctl_softc *ctl_softc; 4755 struct ctl_lun *lun; 4756 4757 ctl_softc = control_softc; 4758 4759 lun = (struct ctl_lun *)be_lun->ctl_lun; 4760 4761 mtx_lock(&lun->lun_lock); 4762 lun->flags |= CTL_LUN_STOPPED; 4763 mtx_unlock(&lun->lun_lock); 4764 4765 return (0); 4766} 4767 4768int 4769ctl_lun_offline(struct ctl_be_lun *be_lun) 4770{ 4771 struct ctl_softc *ctl_softc; 4772 struct ctl_lun *lun; 4773 4774 ctl_softc = control_softc; 4775 4776 lun = (struct ctl_lun *)be_lun->ctl_lun; 4777 4778 mtx_lock(&lun->lun_lock); 4779 lun->flags |= CTL_LUN_OFFLINE; 4780 mtx_unlock(&lun->lun_lock); 4781 4782 return (0); 4783} 4784 4785int 4786ctl_lun_online(struct ctl_be_lun *be_lun) 4787{ 4788 struct ctl_softc *ctl_softc; 4789 struct ctl_lun *lun; 4790 4791 ctl_softc = control_softc; 4792 4793 lun = (struct ctl_lun *)be_lun->ctl_lun; 4794 4795 mtx_lock(&lun->lun_lock); 4796 lun->flags &= ~CTL_LUN_OFFLINE; 4797 mtx_unlock(&lun->lun_lock); 4798 4799 return (0); 4800} 4801 4802int 4803ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4804{ 4805 struct ctl_softc *ctl_softc; 4806 struct ctl_lun *lun; 4807 4808 ctl_softc = control_softc; 4809 4810 lun = (struct ctl_lun *)be_lun->ctl_lun; 4811 4812 mtx_lock(&lun->lun_lock); 4813 4814 /* 4815 * The LUN needs to be disabled before it can be marked invalid. 4816 */ 4817 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4818 mtx_unlock(&lun->lun_lock); 4819 return (-1); 4820 } 4821 /* 4822 * Mark the LUN invalid. 4823 */ 4824 lun->flags |= CTL_LUN_INVALID; 4825 4826 /* 4827 * If there is nothing in the OOA queue, go ahead and free the LUN. 4828 * If we have something in the OOA queue, we'll free it when the 4829 * last I/O completes. 4830 */ 4831 if (TAILQ_EMPTY(&lun->ooa_queue)) { 4832 mtx_unlock(&lun->lun_lock); 4833 mtx_lock(&ctl_softc->ctl_lock); 4834 ctl_free_lun(lun); 4835 mtx_unlock(&ctl_softc->ctl_lock); 4836 } else 4837 mtx_unlock(&lun->lun_lock); 4838 4839 return (0); 4840} 4841 4842int 4843ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4844{ 4845 struct ctl_softc *ctl_softc; 4846 struct ctl_lun *lun; 4847 4848 ctl_softc = control_softc; 4849 lun = (struct ctl_lun *)be_lun->ctl_lun; 4850 4851 mtx_lock(&lun->lun_lock); 4852 lun->flags |= CTL_LUN_INOPERABLE; 4853 mtx_unlock(&lun->lun_lock); 4854 4855 return (0); 4856} 4857 4858int 4859ctl_lun_operable(struct ctl_be_lun *be_lun) 4860{ 4861 struct ctl_softc *ctl_softc; 4862 struct ctl_lun *lun; 4863 4864 ctl_softc = control_softc; 4865 lun = (struct ctl_lun *)be_lun->ctl_lun; 4866 4867 mtx_lock(&lun->lun_lock); 4868 lun->flags &= ~CTL_LUN_INOPERABLE; 4869 mtx_unlock(&lun->lun_lock); 4870 4871 return (0); 4872} 4873 4874int 4875ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4876 int lock) 4877{ 4878 struct ctl_softc *softc; 4879 struct ctl_lun *lun; 4880 struct copan_aps_subpage *current_sp; 4881 struct ctl_page_index *page_index; 4882 int i; 4883 4884 softc = control_softc; 4885 4886 mtx_lock(&softc->ctl_lock); 4887 4888 lun = (struct ctl_lun *)be_lun->ctl_lun; 4889 mtx_lock(&lun->lun_lock); 4890 4891 page_index = NULL; 4892 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4893 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4894 APS_PAGE_CODE) 4895 continue; 4896 4897 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4898 continue; 4899 page_index = &lun->mode_pages.index[i]; 4900 } 4901 4902 if (page_index == NULL) { 4903 mtx_unlock(&lun->lun_lock); 4904 mtx_unlock(&softc->ctl_lock); 4905 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4906 (uintmax_t)lun->lun); 4907 return (1); 4908 } 4909#if 0 4910 if ((softc->aps_locked_lun != 0) 4911 && (softc->aps_locked_lun != lun->lun)) { 4912 printf("%s: attempt to lock LUN %llu when %llu is already " 4913 "locked\n"); 4914 mtx_unlock(&lun->lun_lock); 4915 mtx_unlock(&softc->ctl_lock); 4916 return (1); 4917 } 4918#endif 4919 4920 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4921 (page_index->page_len * CTL_PAGE_CURRENT)); 4922 4923 if (lock != 0) { 4924 current_sp->lock_active = APS_LOCK_ACTIVE; 4925 softc->aps_locked_lun = lun->lun; 4926 } else { 4927 current_sp->lock_active = 0; 4928 softc->aps_locked_lun = 0; 4929 } 4930 4931 4932 /* 4933 * If we're in HA mode, try to send the lock message to the other 4934 * side. 4935 */ 4936 if (ctl_is_single == 0) { 4937 int isc_retval; 4938 union ctl_ha_msg lock_msg; 4939 4940 lock_msg.hdr.nexus = *nexus; 4941 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4942 if (lock != 0) 4943 lock_msg.aps.lock_flag = 1; 4944 else 4945 lock_msg.aps.lock_flag = 0; 4946 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4947 sizeof(lock_msg), 0); 4948 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4949 printf("%s: APS (lock=%d) error returned from " 4950 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4951 mtx_unlock(&lun->lun_lock); 4952 mtx_unlock(&softc->ctl_lock); 4953 return (1); 4954 } 4955 } 4956 4957 mtx_unlock(&lun->lun_lock); 4958 mtx_unlock(&softc->ctl_lock); 4959 4960 return (0); 4961} 4962 4963void 4964ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4965{ 4966 struct ctl_lun *lun; 4967 struct ctl_softc *softc; 4968 int i; 4969 4970 softc = control_softc; 4971 4972 lun = (struct ctl_lun *)be_lun->ctl_lun; 4973 4974 mtx_lock(&lun->lun_lock); 4975 4976 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4977 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4978 4979 mtx_unlock(&lun->lun_lock); 4980} 4981 4982/* 4983 * Backend "memory move is complete" callback for requests that never 4984 * make it down to say RAIDCore's configuration code. 4985 */ 4986int 4987ctl_config_move_done(union ctl_io *io) 4988{ 4989 int retval; 4990 4991 retval = CTL_RETVAL_COMPLETE; 4992 4993 4994 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4995 /* 4996 * XXX KDM this shouldn't happen, but what if it does? 4997 */ 4998 if (io->io_hdr.io_type != CTL_IO_SCSI) 4999 panic("I/O type isn't CTL_IO_SCSI!"); 5000 5001 if ((io->io_hdr.port_status == 0) 5002 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 5003 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 5004 io->io_hdr.status = CTL_SUCCESS; 5005 else if ((io->io_hdr.port_status != 0) 5006 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 5007 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 5008 /* 5009 * For hardware error sense keys, the sense key 5010 * specific value is defined to be a retry count, 5011 * but we use it to pass back an internal FETD 5012 * error code. XXX KDM Hopefully the FETD is only 5013 * using 16 bits for an error code, since that's 5014 * all the space we have in the sks field. 5015 */ 5016 ctl_set_internal_failure(&io->scsiio, 5017 /*sks_valid*/ 1, 5018 /*retry_count*/ 5019 io->io_hdr.port_status); 5020 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 5021 free(io->scsiio.kern_data_ptr, M_CTL); 5022 ctl_done(io); 5023 goto bailout; 5024 } 5025 5026 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 5027 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 5028 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 5029 /* 5030 * XXX KDM just assuming a single pointer here, and not a 5031 * S/G list. If we start using S/G lists for config data, 5032 * we'll need to know how to clean them up here as well. 5033 */ 5034 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 5035 free(io->scsiio.kern_data_ptr, M_CTL); 5036 /* Hopefully the user has already set the status... */ 5037 ctl_done(io); 5038 } else { 5039 /* 5040 * XXX KDM now we need to continue data movement. Some 5041 * options: 5042 * - call ctl_scsiio() again? We don't do this for data 5043 * writes, because for those at least we know ahead of 5044 * time where the write will go and how long it is. For 5045 * config writes, though, that information is largely 5046 * contained within the write itself, thus we need to 5047 * parse out the data again. 5048 * 5049 * - Call some other function once the data is in? 5050 */ 5051 5052 /* 5053 * XXX KDM call ctl_scsiio() again for now, and check flag 5054 * bits to see whether we're allocated or not. 5055 */ 5056 retval = ctl_scsiio(&io->scsiio); 5057 } 5058bailout: 5059 return (retval); 5060} 5061 5062/* 5063 * This gets called by a backend driver when it is done with a 5064 * data_submit method. 5065 */ 5066void 5067ctl_data_submit_done(union ctl_io *io) 5068{ 5069 /* 5070 * If the IO_CONT flag is set, we need to call the supplied 5071 * function to continue processing the I/O, instead of completing 5072 * the I/O just yet. 5073 * 5074 * If there is an error, though, we don't want to keep processing. 5075 * Instead, just send status back to the initiator. 5076 */ 5077 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 5078 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 5079 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 5080 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 5081 io->scsiio.io_cont(io); 5082 return; 5083 } 5084 ctl_done(io); 5085} 5086 5087/* 5088 * This gets called by a backend driver when it is done with a 5089 * configuration write. 5090 */ 5091void 5092ctl_config_write_done(union ctl_io *io) 5093{ 5094 /* 5095 * If the IO_CONT flag is set, we need to call the supplied 5096 * function to continue processing the I/O, instead of completing 5097 * the I/O just yet. 5098 * 5099 * If there is an error, though, we don't want to keep processing. 5100 * Instead, just send status back to the initiator. 5101 */ 5102 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5103 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5104 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5105 io->scsiio.io_cont(io); 5106 return; 5107 } 5108 /* 5109 * Since a configuration write can be done for commands that actually 5110 * have data allocated, like write buffer, and commands that have 5111 * no data, like start/stop unit, we need to check here. 5112 */ 5113 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5114 free(io->scsiio.kern_data_ptr, M_CTL); 5115 ctl_done(io); 5116} 5117 5118/* 5119 * SCSI release command. 5120 */ 5121int 5122ctl_scsi_release(struct ctl_scsiio *ctsio) 5123{ 5124 int length, longid, thirdparty_id, resv_id; 5125 struct ctl_softc *ctl_softc; 5126 struct ctl_lun *lun; 5127 5128 length = 0; 5129 resv_id = 0; 5130 5131 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5132 5133 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5134 ctl_softc = control_softc; 5135 5136 switch (ctsio->cdb[0]) { 5137 case RELEASE_10: { 5138 struct scsi_release_10 *cdb; 5139 5140 cdb = (struct scsi_release_10 *)ctsio->cdb; 5141 5142 if (cdb->byte2 & SR10_LONGID) 5143 longid = 1; 5144 else 5145 thirdparty_id = cdb->thirdparty_id; 5146 5147 resv_id = cdb->resv_id; 5148 length = scsi_2btoul(cdb->length); 5149 break; 5150 } 5151 } 5152 5153 5154 /* 5155 * XXX KDM right now, we only support LUN reservation. We don't 5156 * support 3rd party reservations, or extent reservations, which 5157 * might actually need the parameter list. If we've gotten this 5158 * far, we've got a LUN reservation. Anything else got kicked out 5159 * above. So, according to SPC, ignore the length. 5160 */ 5161 length = 0; 5162 5163 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5164 && (length > 0)) { 5165 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5166 ctsio->kern_data_len = length; 5167 ctsio->kern_total_len = length; 5168 ctsio->kern_data_resid = 0; 5169 ctsio->kern_rel_offset = 0; 5170 ctsio->kern_sg_entries = 0; 5171 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5172 ctsio->be_move_done = ctl_config_move_done; 5173 ctl_datamove((union ctl_io *)ctsio); 5174 5175 return (CTL_RETVAL_COMPLETE); 5176 } 5177 5178 if (length > 0) 5179 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5180 5181 mtx_lock(&lun->lun_lock); 5182 5183 /* 5184 * According to SPC, it is not an error for an intiator to attempt 5185 * to release a reservation on a LUN that isn't reserved, or that 5186 * is reserved by another initiator. The reservation can only be 5187 * released, though, by the initiator who made it or by one of 5188 * several reset type events. 5189 */ 5190 if (lun->flags & CTL_LUN_RESERVED) { 5191 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5192 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5193 && (ctsio->io_hdr.nexus.targ_target.id == 5194 lun->rsv_nexus.targ_target.id)) { 5195 lun->flags &= ~CTL_LUN_RESERVED; 5196 } 5197 } 5198 5199 mtx_unlock(&lun->lun_lock); 5200 5201 ctsio->scsi_status = SCSI_STATUS_OK; 5202 ctsio->io_hdr.status = CTL_SUCCESS; 5203 5204 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5205 free(ctsio->kern_data_ptr, M_CTL); 5206 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5207 } 5208 5209 ctl_done((union ctl_io *)ctsio); 5210 return (CTL_RETVAL_COMPLETE); 5211} 5212 5213int 5214ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5215{ 5216 int extent, thirdparty, longid; 5217 int resv_id, length; 5218 uint64_t thirdparty_id; 5219 struct ctl_softc *ctl_softc; 5220 struct ctl_lun *lun; 5221 5222 extent = 0; 5223 thirdparty = 0; 5224 longid = 0; 5225 resv_id = 0; 5226 length = 0; 5227 thirdparty_id = 0; 5228 5229 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5230 5231 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5232 ctl_softc = control_softc; 5233 5234 switch (ctsio->cdb[0]) { 5235 case RESERVE_10: { 5236 struct scsi_reserve_10 *cdb; 5237 5238 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5239 5240 if (cdb->byte2 & SR10_LONGID) 5241 longid = 1; 5242 else 5243 thirdparty_id = cdb->thirdparty_id; 5244 5245 resv_id = cdb->resv_id; 5246 length = scsi_2btoul(cdb->length); 5247 break; 5248 } 5249 } 5250 5251 /* 5252 * XXX KDM right now, we only support LUN reservation. We don't 5253 * support 3rd party reservations, or extent reservations, which 5254 * might actually need the parameter list. If we've gotten this 5255 * far, we've got a LUN reservation. Anything else got kicked out 5256 * above. So, according to SPC, ignore the length. 5257 */ 5258 length = 0; 5259 5260 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5261 && (length > 0)) { 5262 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5263 ctsio->kern_data_len = length; 5264 ctsio->kern_total_len = length; 5265 ctsio->kern_data_resid = 0; 5266 ctsio->kern_rel_offset = 0; 5267 ctsio->kern_sg_entries = 0; 5268 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5269 ctsio->be_move_done = ctl_config_move_done; 5270 ctl_datamove((union ctl_io *)ctsio); 5271 5272 return (CTL_RETVAL_COMPLETE); 5273 } 5274 5275 if (length > 0) 5276 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5277 5278 mtx_lock(&lun->lun_lock); 5279 if (lun->flags & CTL_LUN_RESERVED) { 5280 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5281 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5282 || (ctsio->io_hdr.nexus.targ_target.id != 5283 lun->rsv_nexus.targ_target.id)) { 5284 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5285 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5286 goto bailout; 5287 } 5288 } 5289 5290 lun->flags |= CTL_LUN_RESERVED; 5291 lun->rsv_nexus = ctsio->io_hdr.nexus; 5292 5293 ctsio->scsi_status = SCSI_STATUS_OK; 5294 ctsio->io_hdr.status = CTL_SUCCESS; 5295 5296bailout: 5297 mtx_unlock(&lun->lun_lock); 5298 5299 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5300 free(ctsio->kern_data_ptr, M_CTL); 5301 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5302 } 5303 5304 ctl_done((union ctl_io *)ctsio); 5305 return (CTL_RETVAL_COMPLETE); 5306} 5307 5308int 5309ctl_start_stop(struct ctl_scsiio *ctsio) 5310{ 5311 struct scsi_start_stop_unit *cdb; 5312 struct ctl_lun *lun; 5313 struct ctl_softc *ctl_softc; 5314 int retval; 5315 5316 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5317 5318 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5319 ctl_softc = control_softc; 5320 retval = 0; 5321 5322 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5323 5324 /* 5325 * XXX KDM 5326 * We don't support the immediate bit on a stop unit. In order to 5327 * do that, we would need to code up a way to know that a stop is 5328 * pending, and hold off any new commands until it completes, one 5329 * way or another. Then we could accept or reject those commands 5330 * depending on its status. We would almost need to do the reverse 5331 * of what we do below for an immediate start -- return the copy of 5332 * the ctl_io to the FETD with status to send to the host (and to 5333 * free the copy!) and then free the original I/O once the stop 5334 * actually completes. That way, the OOA queue mechanism can work 5335 * to block commands that shouldn't proceed. Another alternative 5336 * would be to put the copy in the queue in place of the original, 5337 * and return the original back to the caller. That could be 5338 * slightly safer.. 5339 */ 5340 if ((cdb->byte2 & SSS_IMMED) 5341 && ((cdb->how & SSS_START) == 0)) { 5342 ctl_set_invalid_field(ctsio, 5343 /*sks_valid*/ 1, 5344 /*command*/ 1, 5345 /*field*/ 1, 5346 /*bit_valid*/ 1, 5347 /*bit*/ 0); 5348 ctl_done((union ctl_io *)ctsio); 5349 return (CTL_RETVAL_COMPLETE); 5350 } 5351 5352 if ((lun->flags & CTL_LUN_PR_RESERVED) 5353 && ((cdb->how & SSS_START)==0)) { 5354 uint32_t residx; 5355 5356 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5357 if (!lun->per_res[residx].registered 5358 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5359 5360 ctl_set_reservation_conflict(ctsio); 5361 ctl_done((union ctl_io *)ctsio); 5362 return (CTL_RETVAL_COMPLETE); 5363 } 5364 } 5365 5366 /* 5367 * If there is no backend on this device, we can't start or stop 5368 * it. In theory we shouldn't get any start/stop commands in the 5369 * first place at this level if the LUN doesn't have a backend. 5370 * That should get stopped by the command decode code. 5371 */ 5372 if (lun->backend == NULL) { 5373 ctl_set_invalid_opcode(ctsio); 5374 ctl_done((union ctl_io *)ctsio); 5375 return (CTL_RETVAL_COMPLETE); 5376 } 5377 5378 /* 5379 * XXX KDM Copan-specific offline behavior. 5380 * Figure out a reasonable way to port this? 5381 */ 5382#ifdef NEEDTOPORT 5383 mtx_lock(&lun->lun_lock); 5384 5385 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5386 && (lun->flags & CTL_LUN_OFFLINE)) { 5387 /* 5388 * If the LUN is offline, and the on/offline bit isn't set, 5389 * reject the start or stop. Otherwise, let it through. 5390 */ 5391 mtx_unlock(&lun->lun_lock); 5392 ctl_set_lun_not_ready(ctsio); 5393 ctl_done((union ctl_io *)ctsio); 5394 } else { 5395 mtx_unlock(&lun->lun_lock); 5396#endif /* NEEDTOPORT */ 5397 /* 5398 * This could be a start or a stop when we're online, 5399 * or a stop/offline or start/online. A start or stop when 5400 * we're offline is covered in the case above. 5401 */ 5402 /* 5403 * In the non-immediate case, we send the request to 5404 * the backend and return status to the user when 5405 * it is done. 5406 * 5407 * In the immediate case, we allocate a new ctl_io 5408 * to hold a copy of the request, and send that to 5409 * the backend. We then set good status on the 5410 * user's request and return it immediately. 5411 */ 5412 if (cdb->byte2 & SSS_IMMED) { 5413 union ctl_io *new_io; 5414 5415 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5416 if (new_io == NULL) { 5417 ctl_set_busy(ctsio); 5418 ctl_done((union ctl_io *)ctsio); 5419 } else { 5420 ctl_copy_io((union ctl_io *)ctsio, 5421 new_io); 5422 retval = lun->backend->config_write(new_io); 5423 ctl_set_success(ctsio); 5424 ctl_done((union ctl_io *)ctsio); 5425 } 5426 } else { 5427 retval = lun->backend->config_write( 5428 (union ctl_io *)ctsio); 5429 } 5430#ifdef NEEDTOPORT 5431 } 5432#endif 5433 return (retval); 5434} 5435 5436/* 5437 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5438 * we don't really do anything with the LBA and length fields if the user 5439 * passes them in. Instead we'll just flush out the cache for the entire 5440 * LUN. 5441 */ 5442int 5443ctl_sync_cache(struct ctl_scsiio *ctsio) 5444{ 5445 struct ctl_lun *lun; 5446 struct ctl_softc *ctl_softc; 5447 uint64_t starting_lba; 5448 uint32_t block_count; 5449 int retval; 5450 5451 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5452 5453 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5454 ctl_softc = control_softc; 5455 retval = 0; 5456 5457 switch (ctsio->cdb[0]) { 5458 case SYNCHRONIZE_CACHE: { 5459 struct scsi_sync_cache *cdb; 5460 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5461 5462 starting_lba = scsi_4btoul(cdb->begin_lba); 5463 block_count = scsi_2btoul(cdb->lb_count); 5464 break; 5465 } 5466 case SYNCHRONIZE_CACHE_16: { 5467 struct scsi_sync_cache_16 *cdb; 5468 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5469 5470 starting_lba = scsi_8btou64(cdb->begin_lba); 5471 block_count = scsi_4btoul(cdb->lb_count); 5472 break; 5473 } 5474 default: 5475 ctl_set_invalid_opcode(ctsio); 5476 ctl_done((union ctl_io *)ctsio); 5477 goto bailout; 5478 break; /* NOTREACHED */ 5479 } 5480 5481 /* 5482 * We check the LBA and length, but don't do anything with them. 5483 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5484 * get flushed. This check will just help satisfy anyone who wants 5485 * to see an error for an out of range LBA. 5486 */ 5487 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5488 ctl_set_lba_out_of_range(ctsio); 5489 ctl_done((union ctl_io *)ctsio); 5490 goto bailout; 5491 } 5492 5493 /* 5494 * If this LUN has no backend, we can't flush the cache anyway. 5495 */ 5496 if (lun->backend == NULL) { 5497 ctl_set_invalid_opcode(ctsio); 5498 ctl_done((union ctl_io *)ctsio); 5499 goto bailout; 5500 } 5501 5502 /* 5503 * Check to see whether we're configured to send the SYNCHRONIZE 5504 * CACHE command directly to the back end. 5505 */ 5506 mtx_lock(&lun->lun_lock); 5507 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5508 && (++(lun->sync_count) >= lun->sync_interval)) { 5509 lun->sync_count = 0; 5510 mtx_unlock(&lun->lun_lock); 5511 retval = lun->backend->config_write((union ctl_io *)ctsio); 5512 } else { 5513 mtx_unlock(&lun->lun_lock); 5514 ctl_set_success(ctsio); 5515 ctl_done((union ctl_io *)ctsio); 5516 } 5517 5518bailout: 5519 5520 return (retval); 5521} 5522 5523int 5524ctl_format(struct ctl_scsiio *ctsio) 5525{ 5526 struct scsi_format *cdb; 5527 struct ctl_lun *lun; 5528 struct ctl_softc *ctl_softc; 5529 int length, defect_list_len; 5530 5531 CTL_DEBUG_PRINT(("ctl_format\n")); 5532 5533 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5534 ctl_softc = control_softc; 5535 5536 cdb = (struct scsi_format *)ctsio->cdb; 5537 5538 length = 0; 5539 if (cdb->byte2 & SF_FMTDATA) { 5540 if (cdb->byte2 & SF_LONGLIST) 5541 length = sizeof(struct scsi_format_header_long); 5542 else 5543 length = sizeof(struct scsi_format_header_short); 5544 } 5545 5546 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5547 && (length > 0)) { 5548 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5549 ctsio->kern_data_len = length; 5550 ctsio->kern_total_len = length; 5551 ctsio->kern_data_resid = 0; 5552 ctsio->kern_rel_offset = 0; 5553 ctsio->kern_sg_entries = 0; 5554 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5555 ctsio->be_move_done = ctl_config_move_done; 5556 ctl_datamove((union ctl_io *)ctsio); 5557 5558 return (CTL_RETVAL_COMPLETE); 5559 } 5560 5561 defect_list_len = 0; 5562 5563 if (cdb->byte2 & SF_FMTDATA) { 5564 if (cdb->byte2 & SF_LONGLIST) { 5565 struct scsi_format_header_long *header; 5566 5567 header = (struct scsi_format_header_long *) 5568 ctsio->kern_data_ptr; 5569 5570 defect_list_len = scsi_4btoul(header->defect_list_len); 5571 if (defect_list_len != 0) { 5572 ctl_set_invalid_field(ctsio, 5573 /*sks_valid*/ 1, 5574 /*command*/ 0, 5575 /*field*/ 2, 5576 /*bit_valid*/ 0, 5577 /*bit*/ 0); 5578 goto bailout; 5579 } 5580 } else { 5581 struct scsi_format_header_short *header; 5582 5583 header = (struct scsi_format_header_short *) 5584 ctsio->kern_data_ptr; 5585 5586 defect_list_len = scsi_2btoul(header->defect_list_len); 5587 if (defect_list_len != 0) { 5588 ctl_set_invalid_field(ctsio, 5589 /*sks_valid*/ 1, 5590 /*command*/ 0, 5591 /*field*/ 2, 5592 /*bit_valid*/ 0, 5593 /*bit*/ 0); 5594 goto bailout; 5595 } 5596 } 5597 } 5598 5599 /* 5600 * The format command will clear out the "Medium format corrupted" 5601 * status if set by the configuration code. That status is really 5602 * just a way to notify the host that we have lost the media, and 5603 * get them to issue a command that will basically make them think 5604 * they're blowing away the media. 5605 */ 5606 mtx_lock(&lun->lun_lock); 5607 lun->flags &= ~CTL_LUN_INOPERABLE; 5608 mtx_unlock(&lun->lun_lock); 5609 5610 ctsio->scsi_status = SCSI_STATUS_OK; 5611 ctsio->io_hdr.status = CTL_SUCCESS; 5612bailout: 5613 5614 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5615 free(ctsio->kern_data_ptr, M_CTL); 5616 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5617 } 5618 5619 ctl_done((union ctl_io *)ctsio); 5620 return (CTL_RETVAL_COMPLETE); 5621} 5622 5623int 5624ctl_read_buffer(struct ctl_scsiio *ctsio) 5625{ 5626 struct scsi_read_buffer *cdb; 5627 struct ctl_lun *lun; 5628 int buffer_offset, len; 5629 static uint8_t descr[4]; 5630 static uint8_t echo_descr[4] = { 0 }; 5631 5632 CTL_DEBUG_PRINT(("ctl_read_buffer\n")); 5633 5634 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5635 cdb = (struct scsi_read_buffer *)ctsio->cdb; 5636 5637 if (lun->flags & CTL_LUN_PR_RESERVED) { 5638 uint32_t residx; 5639 5640 /* 5641 * XXX KDM need a lock here. 5642 */ 5643 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5644 if ((lun->res_type == SPR_TYPE_EX_AC 5645 && residx != lun->pr_res_idx) 5646 || ((lun->res_type == SPR_TYPE_EX_AC_RO 5647 || lun->res_type == SPR_TYPE_EX_AC_AR) 5648 && !lun->per_res[residx].registered)) { 5649 ctl_set_reservation_conflict(ctsio); 5650 ctl_done((union ctl_io *)ctsio); 5651 return (CTL_RETVAL_COMPLETE); 5652 } 5653 } 5654 5655 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA && 5656 (cdb->byte2 & RWB_MODE) != RWB_MODE_ECHO_DESCR && 5657 (cdb->byte2 & RWB_MODE) != RWB_MODE_DESCR) { 5658 ctl_set_invalid_field(ctsio, 5659 /*sks_valid*/ 1, 5660 /*command*/ 1, 5661 /*field*/ 1, 5662 /*bit_valid*/ 1, 5663 /*bit*/ 4); 5664 ctl_done((union ctl_io *)ctsio); 5665 return (CTL_RETVAL_COMPLETE); 5666 } 5667 5668 len = scsi_3btoul(cdb->length); 5669 buffer_offset = scsi_3btoul(cdb->offset); 5670 5671 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5672 ctl_set_invalid_field(ctsio, 5673 /*sks_valid*/ 1, 5674 /*command*/ 1, 5675 /*field*/ 6, 5676 /*bit_valid*/ 0, 5677 /*bit*/ 0); 5678 ctl_done((union ctl_io *)ctsio); 5679 return (CTL_RETVAL_COMPLETE); 5680 } 5681 5682 if ((cdb->byte2 & RWB_MODE) == RWB_MODE_DESCR) { 5683 descr[0] = 0; 5684 scsi_ulto3b(sizeof(lun->write_buffer), &descr[1]); 5685 ctsio->kern_data_ptr = descr; 5686 len = min(len, sizeof(descr)); 5687 } else if ((cdb->byte2 & RWB_MODE) == RWB_MODE_ECHO_DESCR) { 5688 ctsio->kern_data_ptr = echo_descr; 5689 len = min(len, sizeof(echo_descr)); 5690 } else 5691 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5692 ctsio->kern_data_len = len; 5693 ctsio->kern_total_len = len; 5694 ctsio->kern_data_resid = 0; 5695 ctsio->kern_rel_offset = 0; 5696 ctsio->kern_sg_entries = 0; 5697 ctsio->be_move_done = ctl_config_move_done; 5698 ctl_datamove((union ctl_io *)ctsio); 5699 5700 return (CTL_RETVAL_COMPLETE); 5701} 5702 5703int 5704ctl_write_buffer(struct ctl_scsiio *ctsio) 5705{ 5706 struct scsi_write_buffer *cdb; 5707 struct ctl_lun *lun; 5708 int buffer_offset, len; 5709 5710 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5711 5712 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5713 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5714 5715 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5716 ctl_set_invalid_field(ctsio, 5717 /*sks_valid*/ 1, 5718 /*command*/ 1, 5719 /*field*/ 1, 5720 /*bit_valid*/ 1, 5721 /*bit*/ 4); 5722 ctl_done((union ctl_io *)ctsio); 5723 return (CTL_RETVAL_COMPLETE); 5724 } 5725 5726 len = scsi_3btoul(cdb->length); 5727 buffer_offset = scsi_3btoul(cdb->offset); 5728 5729 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5730 ctl_set_invalid_field(ctsio, 5731 /*sks_valid*/ 1, 5732 /*command*/ 1, 5733 /*field*/ 6, 5734 /*bit_valid*/ 0, 5735 /*bit*/ 0); 5736 ctl_done((union ctl_io *)ctsio); 5737 return (CTL_RETVAL_COMPLETE); 5738 } 5739 5740 /* 5741 * If we've got a kernel request that hasn't been malloced yet, 5742 * malloc it and tell the caller the data buffer is here. 5743 */ 5744 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5745 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5746 ctsio->kern_data_len = len; 5747 ctsio->kern_total_len = len; 5748 ctsio->kern_data_resid = 0; 5749 ctsio->kern_rel_offset = 0; 5750 ctsio->kern_sg_entries = 0; 5751 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5752 ctsio->be_move_done = ctl_config_move_done; 5753 ctl_datamove((union ctl_io *)ctsio); 5754 5755 return (CTL_RETVAL_COMPLETE); 5756 } 5757 5758 ctl_done((union ctl_io *)ctsio); 5759 5760 return (CTL_RETVAL_COMPLETE); 5761} 5762 5763int 5764ctl_write_same(struct ctl_scsiio *ctsio) 5765{ 5766 struct ctl_lun *lun; 5767 struct ctl_lba_len_flags *lbalen; 5768 uint64_t lba; 5769 uint32_t num_blocks; 5770 int len, retval; 5771 uint8_t byte2; 5772 5773 retval = CTL_RETVAL_COMPLETE; 5774 5775 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5776 5777 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5778 5779 switch (ctsio->cdb[0]) { 5780 case WRITE_SAME_10: { 5781 struct scsi_write_same_10 *cdb; 5782 5783 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5784 5785 lba = scsi_4btoul(cdb->addr); 5786 num_blocks = scsi_2btoul(cdb->length); 5787 byte2 = cdb->byte2; 5788 break; 5789 } 5790 case WRITE_SAME_16: { 5791 struct scsi_write_same_16 *cdb; 5792 5793 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5794 5795 lba = scsi_8btou64(cdb->addr); 5796 num_blocks = scsi_4btoul(cdb->length); 5797 byte2 = cdb->byte2; 5798 break; 5799 } 5800 default: 5801 /* 5802 * We got a command we don't support. This shouldn't 5803 * happen, commands should be filtered out above us. 5804 */ 5805 ctl_set_invalid_opcode(ctsio); 5806 ctl_done((union ctl_io *)ctsio); 5807 5808 return (CTL_RETVAL_COMPLETE); 5809 break; /* NOTREACHED */ 5810 } 5811 5812 /* 5813 * The first check is to make sure we're in bounds, the second 5814 * check is to catch wrap-around problems. If the lba + num blocks 5815 * is less than the lba, then we've wrapped around and the block 5816 * range is invalid anyway. 5817 */ 5818 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5819 || ((lba + num_blocks) < lba)) { 5820 ctl_set_lba_out_of_range(ctsio); 5821 ctl_done((union ctl_io *)ctsio); 5822 return (CTL_RETVAL_COMPLETE); 5823 } 5824 5825 /* Zero number of blocks means "to the last logical block" */ 5826 if (num_blocks == 0) { 5827 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5828 ctl_set_invalid_field(ctsio, 5829 /*sks_valid*/ 0, 5830 /*command*/ 1, 5831 /*field*/ 0, 5832 /*bit_valid*/ 0, 5833 /*bit*/ 0); 5834 ctl_done((union ctl_io *)ctsio); 5835 return (CTL_RETVAL_COMPLETE); 5836 } 5837 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5838 } 5839 5840 len = lun->be_lun->blocksize; 5841 5842 /* 5843 * If we've got a kernel request that hasn't been malloced yet, 5844 * malloc it and tell the caller the data buffer is here. 5845 */ 5846 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5847 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5848 ctsio->kern_data_len = len; 5849 ctsio->kern_total_len = len; 5850 ctsio->kern_data_resid = 0; 5851 ctsio->kern_rel_offset = 0; 5852 ctsio->kern_sg_entries = 0; 5853 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5854 ctsio->be_move_done = ctl_config_move_done; 5855 ctl_datamove((union ctl_io *)ctsio); 5856 5857 return (CTL_RETVAL_COMPLETE); 5858 } 5859 5860 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5861 lbalen->lba = lba; 5862 lbalen->len = num_blocks; 5863 lbalen->flags = byte2; 5864 retval = lun->backend->config_write((union ctl_io *)ctsio); 5865 5866 return (retval); 5867} 5868 5869int 5870ctl_unmap(struct ctl_scsiio *ctsio) 5871{ 5872 struct ctl_lun *lun; 5873 struct scsi_unmap *cdb; 5874 struct ctl_ptr_len_flags *ptrlen; 5875 struct scsi_unmap_header *hdr; 5876 struct scsi_unmap_desc *buf, *end; 5877 uint64_t lba; 5878 uint32_t num_blocks; 5879 int len, retval; 5880 uint8_t byte2; 5881 5882 retval = CTL_RETVAL_COMPLETE; 5883 5884 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5885 5886 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5887 cdb = (struct scsi_unmap *)ctsio->cdb; 5888 5889 len = scsi_2btoul(cdb->length); 5890 byte2 = cdb->byte2; 5891 5892 /* 5893 * If we've got a kernel request that hasn't been malloced yet, 5894 * malloc it and tell the caller the data buffer is here. 5895 */ 5896 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5897 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5898 ctsio->kern_data_len = len; 5899 ctsio->kern_total_len = len; 5900 ctsio->kern_data_resid = 0; 5901 ctsio->kern_rel_offset = 0; 5902 ctsio->kern_sg_entries = 0; 5903 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5904 ctsio->be_move_done = ctl_config_move_done; 5905 ctl_datamove((union ctl_io *)ctsio); 5906 5907 return (CTL_RETVAL_COMPLETE); 5908 } 5909 5910 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5911 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5912 if (len < sizeof (*hdr) || 5913 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5914 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5915 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5916 ctl_set_invalid_field(ctsio, 5917 /*sks_valid*/ 0, 5918 /*command*/ 0, 5919 /*field*/ 0, 5920 /*bit_valid*/ 0, 5921 /*bit*/ 0); 5922 ctl_done((union ctl_io *)ctsio); 5923 return (CTL_RETVAL_COMPLETE); 5924 } 5925 len = scsi_2btoul(hdr->desc_length); 5926 buf = (struct scsi_unmap_desc *)(hdr + 1); 5927 end = buf + len / sizeof(*buf); 5928 5929 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5930 ptrlen->ptr = (void *)buf; 5931 ptrlen->len = len; 5932 ptrlen->flags = byte2; 5933 5934 for (; buf < end; buf++) { 5935 lba = scsi_8btou64(buf->lba); 5936 num_blocks = scsi_4btoul(buf->length); 5937 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5938 || ((lba + num_blocks) < lba)) { 5939 ctl_set_lba_out_of_range(ctsio); 5940 ctl_done((union ctl_io *)ctsio); 5941 return (CTL_RETVAL_COMPLETE); 5942 } 5943 } 5944 5945 retval = lun->backend->config_write((union ctl_io *)ctsio); 5946 5947 return (retval); 5948} 5949 5950/* 5951 * Note that this function currently doesn't actually do anything inside 5952 * CTL to enforce things if the DQue bit is turned on. 5953 * 5954 * Also note that this function can't be used in the default case, because 5955 * the DQue bit isn't set in the changeable mask for the control mode page 5956 * anyway. This is just here as an example for how to implement a page 5957 * handler, and a placeholder in case we want to allow the user to turn 5958 * tagged queueing on and off. 5959 * 5960 * The D_SENSE bit handling is functional, however, and will turn 5961 * descriptor sense on and off for a given LUN. 5962 */ 5963int 5964ctl_control_page_handler(struct ctl_scsiio *ctsio, 5965 struct ctl_page_index *page_index, uint8_t *page_ptr) 5966{ 5967 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5968 struct ctl_lun *lun; 5969 struct ctl_softc *softc; 5970 int set_ua; 5971 uint32_t initidx; 5972 5973 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5974 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5975 set_ua = 0; 5976 5977 user_cp = (struct scsi_control_page *)page_ptr; 5978 current_cp = (struct scsi_control_page *) 5979 (page_index->page_data + (page_index->page_len * 5980 CTL_PAGE_CURRENT)); 5981 saved_cp = (struct scsi_control_page *) 5982 (page_index->page_data + (page_index->page_len * 5983 CTL_PAGE_SAVED)); 5984 5985 softc = control_softc; 5986 5987 mtx_lock(&lun->lun_lock); 5988 if (((current_cp->rlec & SCP_DSENSE) == 0) 5989 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5990 /* 5991 * Descriptor sense is currently turned off and the user 5992 * wants to turn it on. 5993 */ 5994 current_cp->rlec |= SCP_DSENSE; 5995 saved_cp->rlec |= SCP_DSENSE; 5996 lun->flags |= CTL_LUN_SENSE_DESC; 5997 set_ua = 1; 5998 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5999 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6000 /* 6001 * Descriptor sense is currently turned on, and the user 6002 * wants to turn it off. 6003 */ 6004 current_cp->rlec &= ~SCP_DSENSE; 6005 saved_cp->rlec &= ~SCP_DSENSE; 6006 lun->flags &= ~CTL_LUN_SENSE_DESC; 6007 set_ua = 1; 6008 } 6009 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6010 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6011#ifdef NEEDTOPORT 6012 csevent_log(CSC_CTL | CSC_SHELF_SW | 6013 CTL_UNTAG_TO_UNTAG, 6014 csevent_LogType_Trace, 6015 csevent_Severity_Information, 6016 csevent_AlertLevel_Green, 6017 csevent_FRU_Firmware, 6018 csevent_FRU_Unknown, 6019 "Received untagged to untagged transition"); 6020#endif /* NEEDTOPORT */ 6021 } else { 6022#ifdef NEEDTOPORT 6023 csevent_log(CSC_CTL | CSC_SHELF_SW | 6024 CTL_UNTAG_TO_TAG, 6025 csevent_LogType_ConfigChange, 6026 csevent_Severity_Information, 6027 csevent_AlertLevel_Green, 6028 csevent_FRU_Firmware, 6029 csevent_FRU_Unknown, 6030 "Received untagged to tagged " 6031 "queueing transition"); 6032#endif /* NEEDTOPORT */ 6033 6034 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6035 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6036 set_ua = 1; 6037 } 6038 } else { 6039 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6040#ifdef NEEDTOPORT 6041 csevent_log(CSC_CTL | CSC_SHELF_SW | 6042 CTL_TAG_TO_UNTAG, 6043 csevent_LogType_ConfigChange, 6044 csevent_Severity_Warning, 6045 csevent_AlertLevel_Yellow, 6046 csevent_FRU_Firmware, 6047 csevent_FRU_Unknown, 6048 "Received tagged queueing to untagged " 6049 "transition"); 6050#endif /* NEEDTOPORT */ 6051 6052 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6053 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6054 set_ua = 1; 6055 } else { 6056#ifdef NEEDTOPORT 6057 csevent_log(CSC_CTL | CSC_SHELF_SW | 6058 CTL_TAG_TO_TAG, 6059 csevent_LogType_Trace, 6060 csevent_Severity_Information, 6061 csevent_AlertLevel_Green, 6062 csevent_FRU_Firmware, 6063 csevent_FRU_Unknown, 6064 "Received tagged queueing to tagged " 6065 "queueing transition"); 6066#endif /* NEEDTOPORT */ 6067 } 6068 } 6069 if (set_ua != 0) { 6070 int i; 6071 /* 6072 * Let other initiators know that the mode 6073 * parameters for this LUN have changed. 6074 */ 6075 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6076 if (i == initidx) 6077 continue; 6078 6079 lun->pending_sense[i].ua_pending |= 6080 CTL_UA_MODE_CHANGE; 6081 } 6082 } 6083 mtx_unlock(&lun->lun_lock); 6084 6085 return (0); 6086} 6087 6088int 6089ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6090 struct ctl_page_index *page_index, uint8_t *page_ptr) 6091{ 6092 return (0); 6093} 6094 6095int 6096ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6097 struct ctl_page_index *page_index, int pc) 6098{ 6099 struct copan_power_subpage *page; 6100 6101 page = (struct copan_power_subpage *)page_index->page_data + 6102 (page_index->page_len * pc); 6103 6104 switch (pc) { 6105 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6106 /* 6107 * We don't update the changable bits for this page. 6108 */ 6109 break; 6110 case SMS_PAGE_CTRL_CURRENT >> 6: 6111 case SMS_PAGE_CTRL_DEFAULT >> 6: 6112 case SMS_PAGE_CTRL_SAVED >> 6: 6113#ifdef NEEDTOPORT 6114 ctl_update_power_subpage(page); 6115#endif 6116 break; 6117 default: 6118#ifdef NEEDTOPORT 6119 EPRINT(0, "Invalid PC %d!!", pc); 6120#endif 6121 break; 6122 } 6123 return (0); 6124} 6125 6126 6127int 6128ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6129 struct ctl_page_index *page_index, uint8_t *page_ptr) 6130{ 6131 struct copan_aps_subpage *user_sp; 6132 struct copan_aps_subpage *current_sp; 6133 union ctl_modepage_info *modepage_info; 6134 struct ctl_softc *softc; 6135 struct ctl_lun *lun; 6136 int retval; 6137 6138 retval = CTL_RETVAL_COMPLETE; 6139 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6140 (page_index->page_len * CTL_PAGE_CURRENT)); 6141 softc = control_softc; 6142 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6143 6144 user_sp = (struct copan_aps_subpage *)page_ptr; 6145 6146 modepage_info = (union ctl_modepage_info *) 6147 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6148 6149 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6150 modepage_info->header.subpage = page_index->subpage; 6151 modepage_info->aps.lock_active = user_sp->lock_active; 6152 6153 mtx_lock(&softc->ctl_lock); 6154 6155 /* 6156 * If there is a request to lock the LUN and another LUN is locked 6157 * this is an error. If the requested LUN is already locked ignore 6158 * the request. If no LUN is locked attempt to lock it. 6159 * if there is a request to unlock the LUN and the LUN is currently 6160 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6161 * if another LUN is locked or no LUN is locked. 6162 */ 6163 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6164 if (softc->aps_locked_lun == lun->lun) { 6165 /* 6166 * This LUN is already locked, so we're done. 6167 */ 6168 retval = CTL_RETVAL_COMPLETE; 6169 } else if (softc->aps_locked_lun == 0) { 6170 /* 6171 * No one has the lock, pass the request to the 6172 * backend. 6173 */ 6174 retval = lun->backend->config_write( 6175 (union ctl_io *)ctsio); 6176 } else { 6177 /* 6178 * Someone else has the lock, throw out the request. 6179 */ 6180 ctl_set_already_locked(ctsio); 6181 free(ctsio->kern_data_ptr, M_CTL); 6182 ctl_done((union ctl_io *)ctsio); 6183 6184 /* 6185 * Set the return value so that ctl_do_mode_select() 6186 * won't try to complete the command. We already 6187 * completed it here. 6188 */ 6189 retval = CTL_RETVAL_ERROR; 6190 } 6191 } else if (softc->aps_locked_lun == lun->lun) { 6192 /* 6193 * This LUN is locked, so pass the unlock request to the 6194 * backend. 6195 */ 6196 retval = lun->backend->config_write((union ctl_io *)ctsio); 6197 } 6198 mtx_unlock(&softc->ctl_lock); 6199 6200 return (retval); 6201} 6202 6203int 6204ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6205 struct ctl_page_index *page_index, 6206 uint8_t *page_ptr) 6207{ 6208 uint8_t *c; 6209 int i; 6210 6211 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6212 ctl_time_io_secs = 6213 (c[0] << 8) | 6214 (c[1] << 0) | 6215 0; 6216 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6217 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6218 printf("page data:"); 6219 for (i=0; i<8; i++) 6220 printf(" %.2x",page_ptr[i]); 6221 printf("\n"); 6222 return (0); 6223} 6224 6225int 6226ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6227 struct ctl_page_index *page_index, 6228 int pc) 6229{ 6230 struct copan_debugconf_subpage *page; 6231 6232 page = (struct copan_debugconf_subpage *)page_index->page_data + 6233 (page_index->page_len * pc); 6234 6235 switch (pc) { 6236 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6237 case SMS_PAGE_CTRL_DEFAULT >> 6: 6238 case SMS_PAGE_CTRL_SAVED >> 6: 6239 /* 6240 * We don't update the changable or default bits for this page. 6241 */ 6242 break; 6243 case SMS_PAGE_CTRL_CURRENT >> 6: 6244 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6245 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6246 break; 6247 default: 6248#ifdef NEEDTOPORT 6249 EPRINT(0, "Invalid PC %d!!", pc); 6250#endif /* NEEDTOPORT */ 6251 break; 6252 } 6253 return (0); 6254} 6255 6256 6257static int 6258ctl_do_mode_select(union ctl_io *io) 6259{ 6260 struct scsi_mode_page_header *page_header; 6261 struct ctl_page_index *page_index; 6262 struct ctl_scsiio *ctsio; 6263 int control_dev, page_len; 6264 int page_len_offset, page_len_size; 6265 union ctl_modepage_info *modepage_info; 6266 struct ctl_lun *lun; 6267 int *len_left, *len_used; 6268 int retval, i; 6269 6270 ctsio = &io->scsiio; 6271 page_index = NULL; 6272 page_len = 0; 6273 retval = CTL_RETVAL_COMPLETE; 6274 6275 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6276 6277 if (lun->be_lun->lun_type != T_DIRECT) 6278 control_dev = 1; 6279 else 6280 control_dev = 0; 6281 6282 modepage_info = (union ctl_modepage_info *) 6283 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6284 len_left = &modepage_info->header.len_left; 6285 len_used = &modepage_info->header.len_used; 6286 6287do_next_page: 6288 6289 page_header = (struct scsi_mode_page_header *) 6290 (ctsio->kern_data_ptr + *len_used); 6291 6292 if (*len_left == 0) { 6293 free(ctsio->kern_data_ptr, M_CTL); 6294 ctl_set_success(ctsio); 6295 ctl_done((union ctl_io *)ctsio); 6296 return (CTL_RETVAL_COMPLETE); 6297 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6298 6299 free(ctsio->kern_data_ptr, M_CTL); 6300 ctl_set_param_len_error(ctsio); 6301 ctl_done((union ctl_io *)ctsio); 6302 return (CTL_RETVAL_COMPLETE); 6303 6304 } else if ((page_header->page_code & SMPH_SPF) 6305 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6306 6307 free(ctsio->kern_data_ptr, M_CTL); 6308 ctl_set_param_len_error(ctsio); 6309 ctl_done((union ctl_io *)ctsio); 6310 return (CTL_RETVAL_COMPLETE); 6311 } 6312 6313 6314 /* 6315 * XXX KDM should we do something with the block descriptor? 6316 */ 6317 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6318 6319 if ((control_dev != 0) 6320 && (lun->mode_pages.index[i].page_flags & 6321 CTL_PAGE_FLAG_DISK_ONLY)) 6322 continue; 6323 6324 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6325 (page_header->page_code & SMPH_PC_MASK)) 6326 continue; 6327 6328 /* 6329 * If neither page has a subpage code, then we've got a 6330 * match. 6331 */ 6332 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6333 && ((page_header->page_code & SMPH_SPF) == 0)) { 6334 page_index = &lun->mode_pages.index[i]; 6335 page_len = page_header->page_length; 6336 break; 6337 } 6338 6339 /* 6340 * If both pages have subpages, then the subpage numbers 6341 * have to match. 6342 */ 6343 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6344 && (page_header->page_code & SMPH_SPF)) { 6345 struct scsi_mode_page_header_sp *sph; 6346 6347 sph = (struct scsi_mode_page_header_sp *)page_header; 6348 6349 if (lun->mode_pages.index[i].subpage == 6350 sph->subpage) { 6351 page_index = &lun->mode_pages.index[i]; 6352 page_len = scsi_2btoul(sph->page_length); 6353 break; 6354 } 6355 } 6356 } 6357 6358 /* 6359 * If we couldn't find the page, or if we don't have a mode select 6360 * handler for it, send back an error to the user. 6361 */ 6362 if ((page_index == NULL) 6363 || (page_index->select_handler == NULL)) { 6364 ctl_set_invalid_field(ctsio, 6365 /*sks_valid*/ 1, 6366 /*command*/ 0, 6367 /*field*/ *len_used, 6368 /*bit_valid*/ 0, 6369 /*bit*/ 0); 6370 free(ctsio->kern_data_ptr, M_CTL); 6371 ctl_done((union ctl_io *)ctsio); 6372 return (CTL_RETVAL_COMPLETE); 6373 } 6374 6375 if (page_index->page_code & SMPH_SPF) { 6376 page_len_offset = 2; 6377 page_len_size = 2; 6378 } else { 6379 page_len_size = 1; 6380 page_len_offset = 1; 6381 } 6382 6383 /* 6384 * If the length the initiator gives us isn't the one we specify in 6385 * the mode page header, or if they didn't specify enough data in 6386 * the CDB to avoid truncating this page, kick out the request. 6387 */ 6388 if ((page_len != (page_index->page_len - page_len_offset - 6389 page_len_size)) 6390 || (*len_left < page_index->page_len)) { 6391 6392 6393 ctl_set_invalid_field(ctsio, 6394 /*sks_valid*/ 1, 6395 /*command*/ 0, 6396 /*field*/ *len_used + page_len_offset, 6397 /*bit_valid*/ 0, 6398 /*bit*/ 0); 6399 free(ctsio->kern_data_ptr, M_CTL); 6400 ctl_done((union ctl_io *)ctsio); 6401 return (CTL_RETVAL_COMPLETE); 6402 } 6403 6404 /* 6405 * Run through the mode page, checking to make sure that the bits 6406 * the user changed are actually legal for him to change. 6407 */ 6408 for (i = 0; i < page_index->page_len; i++) { 6409 uint8_t *user_byte, *change_mask, *current_byte; 6410 int bad_bit; 6411 int j; 6412 6413 user_byte = (uint8_t *)page_header + i; 6414 change_mask = page_index->page_data + 6415 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6416 current_byte = page_index->page_data + 6417 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6418 6419 /* 6420 * Check to see whether the user set any bits in this byte 6421 * that he is not allowed to set. 6422 */ 6423 if ((*user_byte & ~(*change_mask)) == 6424 (*current_byte & ~(*change_mask))) 6425 continue; 6426 6427 /* 6428 * Go through bit by bit to determine which one is illegal. 6429 */ 6430 bad_bit = 0; 6431 for (j = 7; j >= 0; j--) { 6432 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6433 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6434 bad_bit = i; 6435 break; 6436 } 6437 } 6438 ctl_set_invalid_field(ctsio, 6439 /*sks_valid*/ 1, 6440 /*command*/ 0, 6441 /*field*/ *len_used + i, 6442 /*bit_valid*/ 1, 6443 /*bit*/ bad_bit); 6444 free(ctsio->kern_data_ptr, M_CTL); 6445 ctl_done((union ctl_io *)ctsio); 6446 return (CTL_RETVAL_COMPLETE); 6447 } 6448 6449 /* 6450 * Decrement these before we call the page handler, since we may 6451 * end up getting called back one way or another before the handler 6452 * returns to this context. 6453 */ 6454 *len_left -= page_index->page_len; 6455 *len_used += page_index->page_len; 6456 6457 retval = page_index->select_handler(ctsio, page_index, 6458 (uint8_t *)page_header); 6459 6460 /* 6461 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6462 * wait until this queued command completes to finish processing 6463 * the mode page. If it returns anything other than 6464 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6465 * already set the sense information, freed the data pointer, and 6466 * completed the io for us. 6467 */ 6468 if (retval != CTL_RETVAL_COMPLETE) 6469 goto bailout_no_done; 6470 6471 /* 6472 * If the initiator sent us more than one page, parse the next one. 6473 */ 6474 if (*len_left > 0) 6475 goto do_next_page; 6476 6477 ctl_set_success(ctsio); 6478 free(ctsio->kern_data_ptr, M_CTL); 6479 ctl_done((union ctl_io *)ctsio); 6480 6481bailout_no_done: 6482 6483 return (CTL_RETVAL_COMPLETE); 6484 6485} 6486 6487int 6488ctl_mode_select(struct ctl_scsiio *ctsio) 6489{ 6490 int param_len, pf, sp; 6491 int header_size, bd_len; 6492 int len_left, len_used; 6493 struct ctl_page_index *page_index; 6494 struct ctl_lun *lun; 6495 int control_dev, page_len; 6496 union ctl_modepage_info *modepage_info; 6497 int retval; 6498 6499 pf = 0; 6500 sp = 0; 6501 page_len = 0; 6502 len_used = 0; 6503 len_left = 0; 6504 retval = 0; 6505 bd_len = 0; 6506 page_index = NULL; 6507 6508 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6509 6510 if (lun->be_lun->lun_type != T_DIRECT) 6511 control_dev = 1; 6512 else 6513 control_dev = 0; 6514 6515 switch (ctsio->cdb[0]) { 6516 case MODE_SELECT_6: { 6517 struct scsi_mode_select_6 *cdb; 6518 6519 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6520 6521 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6522 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6523 6524 param_len = cdb->length; 6525 header_size = sizeof(struct scsi_mode_header_6); 6526 break; 6527 } 6528 case MODE_SELECT_10: { 6529 struct scsi_mode_select_10 *cdb; 6530 6531 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6532 6533 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6534 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6535 6536 param_len = scsi_2btoul(cdb->length); 6537 header_size = sizeof(struct scsi_mode_header_10); 6538 break; 6539 } 6540 default: 6541 ctl_set_invalid_opcode(ctsio); 6542 ctl_done((union ctl_io *)ctsio); 6543 return (CTL_RETVAL_COMPLETE); 6544 break; /* NOTREACHED */ 6545 } 6546 6547 /* 6548 * From SPC-3: 6549 * "A parameter list length of zero indicates that the Data-Out Buffer 6550 * shall be empty. This condition shall not be considered as an error." 6551 */ 6552 if (param_len == 0) { 6553 ctl_set_success(ctsio); 6554 ctl_done((union ctl_io *)ctsio); 6555 return (CTL_RETVAL_COMPLETE); 6556 } 6557 6558 /* 6559 * Since we'll hit this the first time through, prior to 6560 * allocation, we don't need to free a data buffer here. 6561 */ 6562 if (param_len < header_size) { 6563 ctl_set_param_len_error(ctsio); 6564 ctl_done((union ctl_io *)ctsio); 6565 return (CTL_RETVAL_COMPLETE); 6566 } 6567 6568 /* 6569 * Allocate the data buffer and grab the user's data. In theory, 6570 * we shouldn't have to sanity check the parameter list length here 6571 * because the maximum size is 64K. We should be able to malloc 6572 * that much without too many problems. 6573 */ 6574 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6575 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6576 ctsio->kern_data_len = param_len; 6577 ctsio->kern_total_len = param_len; 6578 ctsio->kern_data_resid = 0; 6579 ctsio->kern_rel_offset = 0; 6580 ctsio->kern_sg_entries = 0; 6581 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6582 ctsio->be_move_done = ctl_config_move_done; 6583 ctl_datamove((union ctl_io *)ctsio); 6584 6585 return (CTL_RETVAL_COMPLETE); 6586 } 6587 6588 switch (ctsio->cdb[0]) { 6589 case MODE_SELECT_6: { 6590 struct scsi_mode_header_6 *mh6; 6591 6592 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6593 bd_len = mh6->blk_desc_len; 6594 break; 6595 } 6596 case MODE_SELECT_10: { 6597 struct scsi_mode_header_10 *mh10; 6598 6599 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6600 bd_len = scsi_2btoul(mh10->blk_desc_len); 6601 break; 6602 } 6603 default: 6604 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6605 break; 6606 } 6607 6608 if (param_len < (header_size + bd_len)) { 6609 free(ctsio->kern_data_ptr, M_CTL); 6610 ctl_set_param_len_error(ctsio); 6611 ctl_done((union ctl_io *)ctsio); 6612 return (CTL_RETVAL_COMPLETE); 6613 } 6614 6615 /* 6616 * Set the IO_CONT flag, so that if this I/O gets passed to 6617 * ctl_config_write_done(), it'll get passed back to 6618 * ctl_do_mode_select() for further processing, or completion if 6619 * we're all done. 6620 */ 6621 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6622 ctsio->io_cont = ctl_do_mode_select; 6623 6624 modepage_info = (union ctl_modepage_info *) 6625 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6626 6627 memset(modepage_info, 0, sizeof(*modepage_info)); 6628 6629 len_left = param_len - header_size - bd_len; 6630 len_used = header_size + bd_len; 6631 6632 modepage_info->header.len_left = len_left; 6633 modepage_info->header.len_used = len_used; 6634 6635 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6636} 6637 6638int 6639ctl_mode_sense(struct ctl_scsiio *ctsio) 6640{ 6641 struct ctl_lun *lun; 6642 int pc, page_code, dbd, llba, subpage; 6643 int alloc_len, page_len, header_len, total_len; 6644 struct scsi_mode_block_descr *block_desc; 6645 struct ctl_page_index *page_index; 6646 int control_dev; 6647 6648 dbd = 0; 6649 llba = 0; 6650 block_desc = NULL; 6651 page_index = NULL; 6652 6653 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6654 6655 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6656 6657 if (lun->be_lun->lun_type != T_DIRECT) 6658 control_dev = 1; 6659 else 6660 control_dev = 0; 6661 6662 if (lun->flags & CTL_LUN_PR_RESERVED) { 6663 uint32_t residx; 6664 6665 /* 6666 * XXX KDM need a lock here. 6667 */ 6668 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 6669 if ((lun->res_type == SPR_TYPE_EX_AC 6670 && residx != lun->pr_res_idx) 6671 || ((lun->res_type == SPR_TYPE_EX_AC_RO 6672 || lun->res_type == SPR_TYPE_EX_AC_AR) 6673 && !lun->per_res[residx].registered)) { 6674 ctl_set_reservation_conflict(ctsio); 6675 ctl_done((union ctl_io *)ctsio); 6676 return (CTL_RETVAL_COMPLETE); 6677 } 6678 } 6679 6680 switch (ctsio->cdb[0]) { 6681 case MODE_SENSE_6: { 6682 struct scsi_mode_sense_6 *cdb; 6683 6684 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6685 6686 header_len = sizeof(struct scsi_mode_hdr_6); 6687 if (cdb->byte2 & SMS_DBD) 6688 dbd = 1; 6689 else 6690 header_len += sizeof(struct scsi_mode_block_descr); 6691 6692 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6693 page_code = cdb->page & SMS_PAGE_CODE; 6694 subpage = cdb->subpage; 6695 alloc_len = cdb->length; 6696 break; 6697 } 6698 case MODE_SENSE_10: { 6699 struct scsi_mode_sense_10 *cdb; 6700 6701 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6702 6703 header_len = sizeof(struct scsi_mode_hdr_10); 6704 6705 if (cdb->byte2 & SMS_DBD) 6706 dbd = 1; 6707 else 6708 header_len += sizeof(struct scsi_mode_block_descr); 6709 if (cdb->byte2 & SMS10_LLBAA) 6710 llba = 1; 6711 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6712 page_code = cdb->page & SMS_PAGE_CODE; 6713 subpage = cdb->subpage; 6714 alloc_len = scsi_2btoul(cdb->length); 6715 break; 6716 } 6717 default: 6718 ctl_set_invalid_opcode(ctsio); 6719 ctl_done((union ctl_io *)ctsio); 6720 return (CTL_RETVAL_COMPLETE); 6721 break; /* NOTREACHED */ 6722 } 6723 6724 /* 6725 * We have to make a first pass through to calculate the size of 6726 * the pages that match the user's query. Then we allocate enough 6727 * memory to hold it, and actually copy the data into the buffer. 6728 */ 6729 switch (page_code) { 6730 case SMS_ALL_PAGES_PAGE: { 6731 int i; 6732 6733 page_len = 0; 6734 6735 /* 6736 * At the moment, values other than 0 and 0xff here are 6737 * reserved according to SPC-3. 6738 */ 6739 if ((subpage != SMS_SUBPAGE_PAGE_0) 6740 && (subpage != SMS_SUBPAGE_ALL)) { 6741 ctl_set_invalid_field(ctsio, 6742 /*sks_valid*/ 1, 6743 /*command*/ 1, 6744 /*field*/ 3, 6745 /*bit_valid*/ 0, 6746 /*bit*/ 0); 6747 ctl_done((union ctl_io *)ctsio); 6748 return (CTL_RETVAL_COMPLETE); 6749 } 6750 6751 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6752 if ((control_dev != 0) 6753 && (lun->mode_pages.index[i].page_flags & 6754 CTL_PAGE_FLAG_DISK_ONLY)) 6755 continue; 6756 6757 /* 6758 * We don't use this subpage if the user didn't 6759 * request all subpages. 6760 */ 6761 if ((lun->mode_pages.index[i].subpage != 0) 6762 && (subpage == SMS_SUBPAGE_PAGE_0)) 6763 continue; 6764 6765#if 0 6766 printf("found page %#x len %d\n", 6767 lun->mode_pages.index[i].page_code & 6768 SMPH_PC_MASK, 6769 lun->mode_pages.index[i].page_len); 6770#endif 6771 page_len += lun->mode_pages.index[i].page_len; 6772 } 6773 break; 6774 } 6775 default: { 6776 int i; 6777 6778 page_len = 0; 6779 6780 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6781 /* Look for the right page code */ 6782 if ((lun->mode_pages.index[i].page_code & 6783 SMPH_PC_MASK) != page_code) 6784 continue; 6785 6786 /* Look for the right subpage or the subpage wildcard*/ 6787 if ((lun->mode_pages.index[i].subpage != subpage) 6788 && (subpage != SMS_SUBPAGE_ALL)) 6789 continue; 6790 6791 /* Make sure the page is supported for this dev type */ 6792 if ((control_dev != 0) 6793 && (lun->mode_pages.index[i].page_flags & 6794 CTL_PAGE_FLAG_DISK_ONLY)) 6795 continue; 6796 6797#if 0 6798 printf("found page %#x len %d\n", 6799 lun->mode_pages.index[i].page_code & 6800 SMPH_PC_MASK, 6801 lun->mode_pages.index[i].page_len); 6802#endif 6803 6804 page_len += lun->mode_pages.index[i].page_len; 6805 } 6806 6807 if (page_len == 0) { 6808 ctl_set_invalid_field(ctsio, 6809 /*sks_valid*/ 1, 6810 /*command*/ 1, 6811 /*field*/ 2, 6812 /*bit_valid*/ 1, 6813 /*bit*/ 5); 6814 ctl_done((union ctl_io *)ctsio); 6815 return (CTL_RETVAL_COMPLETE); 6816 } 6817 break; 6818 } 6819 } 6820 6821 total_len = header_len + page_len; 6822#if 0 6823 printf("header_len = %d, page_len = %d, total_len = %d\n", 6824 header_len, page_len, total_len); 6825#endif 6826 6827 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6828 ctsio->kern_sg_entries = 0; 6829 ctsio->kern_data_resid = 0; 6830 ctsio->kern_rel_offset = 0; 6831 if (total_len < alloc_len) { 6832 ctsio->residual = alloc_len - total_len; 6833 ctsio->kern_data_len = total_len; 6834 ctsio->kern_total_len = total_len; 6835 } else { 6836 ctsio->residual = 0; 6837 ctsio->kern_data_len = alloc_len; 6838 ctsio->kern_total_len = alloc_len; 6839 } 6840 6841 switch (ctsio->cdb[0]) { 6842 case MODE_SENSE_6: { 6843 struct scsi_mode_hdr_6 *header; 6844 6845 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6846 6847 header->datalen = ctl_min(total_len - 1, 254); 6848 6849 if (dbd) 6850 header->block_descr_len = 0; 6851 else 6852 header->block_descr_len = 6853 sizeof(struct scsi_mode_block_descr); 6854 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6855 break; 6856 } 6857 case MODE_SENSE_10: { 6858 struct scsi_mode_hdr_10 *header; 6859 int datalen; 6860 6861 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6862 6863 datalen = ctl_min(total_len - 2, 65533); 6864 scsi_ulto2b(datalen, header->datalen); 6865 if (dbd) 6866 scsi_ulto2b(0, header->block_descr_len); 6867 else 6868 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6869 header->block_descr_len); 6870 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6871 break; 6872 } 6873 default: 6874 panic("invalid CDB type %#x", ctsio->cdb[0]); 6875 break; /* NOTREACHED */ 6876 } 6877 6878 /* 6879 * If we've got a disk, use its blocksize in the block 6880 * descriptor. Otherwise, just set it to 0. 6881 */ 6882 if (dbd == 0) { 6883 if (control_dev != 0) 6884 scsi_ulto3b(lun->be_lun->blocksize, 6885 block_desc->block_len); 6886 else 6887 scsi_ulto3b(0, block_desc->block_len); 6888 } 6889 6890 switch (page_code) { 6891 case SMS_ALL_PAGES_PAGE: { 6892 int i, data_used; 6893 6894 data_used = header_len; 6895 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6896 struct ctl_page_index *page_index; 6897 6898 page_index = &lun->mode_pages.index[i]; 6899 6900 if ((control_dev != 0) 6901 && (page_index->page_flags & 6902 CTL_PAGE_FLAG_DISK_ONLY)) 6903 continue; 6904 6905 /* 6906 * We don't use this subpage if the user didn't 6907 * request all subpages. We already checked (above) 6908 * to make sure the user only specified a subpage 6909 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6910 */ 6911 if ((page_index->subpage != 0) 6912 && (subpage == SMS_SUBPAGE_PAGE_0)) 6913 continue; 6914 6915 /* 6916 * Call the handler, if it exists, to update the 6917 * page to the latest values. 6918 */ 6919 if (page_index->sense_handler != NULL) 6920 page_index->sense_handler(ctsio, page_index,pc); 6921 6922 memcpy(ctsio->kern_data_ptr + data_used, 6923 page_index->page_data + 6924 (page_index->page_len * pc), 6925 page_index->page_len); 6926 data_used += page_index->page_len; 6927 } 6928 break; 6929 } 6930 default: { 6931 int i, data_used; 6932 6933 data_used = header_len; 6934 6935 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6936 struct ctl_page_index *page_index; 6937 6938 page_index = &lun->mode_pages.index[i]; 6939 6940 /* Look for the right page code */ 6941 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6942 continue; 6943 6944 /* Look for the right subpage or the subpage wildcard*/ 6945 if ((page_index->subpage != subpage) 6946 && (subpage != SMS_SUBPAGE_ALL)) 6947 continue; 6948 6949 /* Make sure the page is supported for this dev type */ 6950 if ((control_dev != 0) 6951 && (page_index->page_flags & 6952 CTL_PAGE_FLAG_DISK_ONLY)) 6953 continue; 6954 6955 /* 6956 * Call the handler, if it exists, to update the 6957 * page to the latest values. 6958 */ 6959 if (page_index->sense_handler != NULL) 6960 page_index->sense_handler(ctsio, page_index,pc); 6961 6962 memcpy(ctsio->kern_data_ptr + data_used, 6963 page_index->page_data + 6964 (page_index->page_len * pc), 6965 page_index->page_len); 6966 data_used += page_index->page_len; 6967 } 6968 break; 6969 } 6970 } 6971 6972 ctsio->scsi_status = SCSI_STATUS_OK; 6973 6974 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6975 ctsio->be_move_done = ctl_config_move_done; 6976 ctl_datamove((union ctl_io *)ctsio); 6977 6978 return (CTL_RETVAL_COMPLETE); 6979} 6980 6981int 6982ctl_read_capacity(struct ctl_scsiio *ctsio) 6983{ 6984 struct scsi_read_capacity *cdb; 6985 struct scsi_read_capacity_data *data; 6986 struct ctl_lun *lun; 6987 uint32_t lba; 6988 6989 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6990 6991 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6992 6993 lba = scsi_4btoul(cdb->addr); 6994 if (((cdb->pmi & SRC_PMI) == 0) 6995 && (lba != 0)) { 6996 ctl_set_invalid_field(/*ctsio*/ ctsio, 6997 /*sks_valid*/ 1, 6998 /*command*/ 1, 6999 /*field*/ 2, 7000 /*bit_valid*/ 0, 7001 /*bit*/ 0); 7002 ctl_done((union ctl_io *)ctsio); 7003 return (CTL_RETVAL_COMPLETE); 7004 } 7005 7006 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7007 7008 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7009 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7010 ctsio->residual = 0; 7011 ctsio->kern_data_len = sizeof(*data); 7012 ctsio->kern_total_len = sizeof(*data); 7013 ctsio->kern_data_resid = 0; 7014 ctsio->kern_rel_offset = 0; 7015 ctsio->kern_sg_entries = 0; 7016 7017 /* 7018 * If the maximum LBA is greater than 0xfffffffe, the user must 7019 * issue a SERVICE ACTION IN (16) command, with the read capacity 7020 * serivce action set. 7021 */ 7022 if (lun->be_lun->maxlba > 0xfffffffe) 7023 scsi_ulto4b(0xffffffff, data->addr); 7024 else 7025 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7026 7027 /* 7028 * XXX KDM this may not be 512 bytes... 7029 */ 7030 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7031 7032 ctsio->scsi_status = SCSI_STATUS_OK; 7033 7034 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7035 ctsio->be_move_done = ctl_config_move_done; 7036 ctl_datamove((union ctl_io *)ctsio); 7037 7038 return (CTL_RETVAL_COMPLETE); 7039} 7040 7041int 7042ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7043{ 7044 struct scsi_read_capacity_16 *cdb; 7045 struct scsi_read_capacity_data_long *data; 7046 struct ctl_lun *lun; 7047 uint64_t lba; 7048 uint32_t alloc_len; 7049 7050 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7051 7052 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7053 7054 alloc_len = scsi_4btoul(cdb->alloc_len); 7055 lba = scsi_8btou64(cdb->addr); 7056 7057 if ((cdb->reladr & SRC16_PMI) 7058 && (lba != 0)) { 7059 ctl_set_invalid_field(/*ctsio*/ ctsio, 7060 /*sks_valid*/ 1, 7061 /*command*/ 1, 7062 /*field*/ 2, 7063 /*bit_valid*/ 0, 7064 /*bit*/ 0); 7065 ctl_done((union ctl_io *)ctsio); 7066 return (CTL_RETVAL_COMPLETE); 7067 } 7068 7069 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7070 7071 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7072 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7073 7074 if (sizeof(*data) < alloc_len) { 7075 ctsio->residual = alloc_len - sizeof(*data); 7076 ctsio->kern_data_len = sizeof(*data); 7077 ctsio->kern_total_len = sizeof(*data); 7078 } else { 7079 ctsio->residual = 0; 7080 ctsio->kern_data_len = alloc_len; 7081 ctsio->kern_total_len = alloc_len; 7082 } 7083 ctsio->kern_data_resid = 0; 7084 ctsio->kern_rel_offset = 0; 7085 ctsio->kern_sg_entries = 0; 7086 7087 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7088 /* XXX KDM this may not be 512 bytes... */ 7089 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7090 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7091 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7092 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7093 data->lalba_lbp[0] |= SRC16_LBPME; 7094 7095 ctsio->scsi_status = SCSI_STATUS_OK; 7096 7097 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7098 ctsio->be_move_done = ctl_config_move_done; 7099 ctl_datamove((union ctl_io *)ctsio); 7100 7101 return (CTL_RETVAL_COMPLETE); 7102} 7103 7104int 7105ctl_report_tagret_port_groups(struct ctl_scsiio *ctsio) 7106{ 7107 struct scsi_maintenance_in *cdb; 7108 int retval; 7109 int alloc_len, total_len = 0; 7110 int num_target_port_groups, single; 7111 struct ctl_lun *lun; 7112 struct ctl_softc *softc; 7113 struct scsi_target_group_data *rtg_ptr; 7114 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7115 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7116 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7117 7118 CTL_DEBUG_PRINT(("ctl_report_tagret_port_groups\n")); 7119 7120 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7121 softc = control_softc; 7122 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7123 7124 retval = CTL_RETVAL_COMPLETE; 7125 7126 single = ctl_is_single; 7127 if (single) 7128 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7129 else 7130 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7131 7132 total_len = sizeof(struct scsi_target_group_data) + 7133 sizeof(struct scsi_target_port_group_descriptor) * 7134 num_target_port_groups + 7135 sizeof(struct scsi_target_port_descriptor) * 7136 NUM_PORTS_PER_GRP * num_target_port_groups; 7137 7138 alloc_len = scsi_4btoul(cdb->length); 7139 7140 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7141 7142 ctsio->kern_sg_entries = 0; 7143 7144 if (total_len < alloc_len) { 7145 ctsio->residual = alloc_len - total_len; 7146 ctsio->kern_data_len = total_len; 7147 ctsio->kern_total_len = total_len; 7148 } else { 7149 ctsio->residual = 0; 7150 ctsio->kern_data_len = alloc_len; 7151 ctsio->kern_total_len = alloc_len; 7152 } 7153 ctsio->kern_data_resid = 0; 7154 ctsio->kern_rel_offset = 0; 7155 7156 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7157 7158 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7159 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7160 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7161 &tp_desc_ptr1_1->desc_list[0]; 7162 7163 if (single == 0) { 7164 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7165 &tp_desc_ptr1_2->desc_list[0]; 7166 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7167 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7168 &tp_desc_ptr2_1->desc_list[0]; 7169 } else { 7170 tpg_desc_ptr2 = NULL; 7171 tp_desc_ptr2_1 = NULL; 7172 tp_desc_ptr2_2 = NULL; 7173 } 7174 7175 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7176 if (single == 0) { 7177 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7178 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7179 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7180 tpg_desc_ptr2->pref_state = 7181 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7182 } else { 7183 tpg_desc_ptr1->pref_state = 7184 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7185 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7186 } 7187 } else { 7188 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7189 tpg_desc_ptr1->pref_state = 7190 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7191 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7192 } else { 7193 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7194 tpg_desc_ptr2->pref_state = 7195 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7196 } 7197 } 7198 } else { 7199 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7200 } 7201 tpg_desc_ptr1->support = 0; 7202 tpg_desc_ptr1->target_port_group[1] = 1; 7203 tpg_desc_ptr1->status = TPG_IMPLICIT; 7204 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7205 7206 if (single == 0) { 7207 tpg_desc_ptr2->support = 0; 7208 tpg_desc_ptr2->target_port_group[1] = 2; 7209 tpg_desc_ptr2->status = TPG_IMPLICIT; 7210 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7211 7212 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7213 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7214 7215 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7216 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7217 } else { 7218 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7219 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7220 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7221 } else { 7222 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7223 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7224 } 7225 } 7226 7227 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7228 ctsio->be_move_done = ctl_config_move_done; 7229 7230 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7231 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7232 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7233 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7234 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7235 7236 ctl_datamove((union ctl_io *)ctsio); 7237 return(retval); 7238} 7239 7240int 7241ctl_report_supported_opcodes(struct ctl_scsiio *ctsio) 7242{ 7243 struct ctl_lun *lun; 7244 struct scsi_report_supported_opcodes *cdb; 7245 const struct ctl_cmd_entry *entry, *sentry; 7246 struct scsi_report_supported_opcodes_all *all; 7247 struct scsi_report_supported_opcodes_descr *descr; 7248 struct scsi_report_supported_opcodes_one *one; 7249 int retval; 7250 int alloc_len, total_len; 7251 int opcode, service_action, i, j, num; 7252 7253 CTL_DEBUG_PRINT(("ctl_report_supported_opcodes\n")); 7254 7255 cdb = (struct scsi_report_supported_opcodes *)ctsio->cdb; 7256 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7257 7258 retval = CTL_RETVAL_COMPLETE; 7259 7260 opcode = cdb->requested_opcode; 7261 service_action = scsi_2btoul(cdb->requested_service_action); 7262 switch (cdb->options & RSO_OPTIONS_MASK) { 7263 case RSO_OPTIONS_ALL: 7264 num = 0; 7265 for (i = 0; i < 256; i++) { 7266 entry = &ctl_cmd_table[i]; 7267 if (entry->flags & CTL_CMD_FLAG_SA5) { 7268 for (j = 0; j < 32; j++) { 7269 sentry = &((const struct ctl_cmd_entry *) 7270 entry->execute)[j]; 7271 if (ctl_cmd_applicable( 7272 lun->be_lun->lun_type, sentry)) 7273 num++; 7274 } 7275 } else { 7276 if (ctl_cmd_applicable(lun->be_lun->lun_type, 7277 entry)) 7278 num++; 7279 } 7280 } 7281 total_len = sizeof(struct scsi_report_supported_opcodes_all) + 7282 num * sizeof(struct scsi_report_supported_opcodes_descr); 7283 break; 7284 case RSO_OPTIONS_OC: 7285 if (ctl_cmd_table[opcode].flags & CTL_CMD_FLAG_SA5) { 7286 ctl_set_invalid_field(/*ctsio*/ ctsio, 7287 /*sks_valid*/ 1, 7288 /*command*/ 1, 7289 /*field*/ 2, 7290 /*bit_valid*/ 1, 7291 /*bit*/ 2); 7292 ctl_done((union ctl_io *)ctsio); 7293 return (CTL_RETVAL_COMPLETE); 7294 } 7295 total_len = sizeof(struct scsi_report_supported_opcodes_one) + 32; 7296 break; 7297 case RSO_OPTIONS_OC_SA: 7298 if ((ctl_cmd_table[opcode].flags & CTL_CMD_FLAG_SA5) == 0 || 7299 service_action >= 32) { 7300 ctl_set_invalid_field(/*ctsio*/ ctsio, 7301 /*sks_valid*/ 1, 7302 /*command*/ 1, 7303 /*field*/ 2, 7304 /*bit_valid*/ 1, 7305 /*bit*/ 2); 7306 ctl_done((union ctl_io *)ctsio); 7307 return (CTL_RETVAL_COMPLETE); 7308 } 7309 total_len = sizeof(struct scsi_report_supported_opcodes_one) + 32; 7310 break; 7311 default: 7312 ctl_set_invalid_field(/*ctsio*/ ctsio, 7313 /*sks_valid*/ 1, 7314 /*command*/ 1, 7315 /*field*/ 2, 7316 /*bit_valid*/ 1, 7317 /*bit*/ 2); 7318 ctl_done((union ctl_io *)ctsio); 7319 return (CTL_RETVAL_COMPLETE); 7320 } 7321 7322 alloc_len = scsi_4btoul(cdb->length); 7323 7324 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7325 7326 ctsio->kern_sg_entries = 0; 7327 7328 if (total_len < alloc_len) { 7329 ctsio->residual = alloc_len - total_len; 7330 ctsio->kern_data_len = total_len; 7331 ctsio->kern_total_len = total_len; 7332 } else { 7333 ctsio->residual = 0; 7334 ctsio->kern_data_len = alloc_len; 7335 ctsio->kern_total_len = alloc_len; 7336 } 7337 ctsio->kern_data_resid = 0; 7338 ctsio->kern_rel_offset = 0; 7339 7340 switch (cdb->options & RSO_OPTIONS_MASK) { 7341 case RSO_OPTIONS_ALL: 7342 all = (struct scsi_report_supported_opcodes_all *) 7343 ctsio->kern_data_ptr; 7344 num = 0; 7345 for (i = 0; i < 256; i++) { 7346 entry = &ctl_cmd_table[i]; 7347 if (entry->flags & CTL_CMD_FLAG_SA5) { 7348 for (j = 0; j < 32; j++) { 7349 sentry = &((const struct ctl_cmd_entry *) 7350 entry->execute)[j]; 7351 if (!ctl_cmd_applicable( 7352 lun->be_lun->lun_type, sentry)) 7353 continue; 7354 descr = &all->descr[num++]; 7355 descr->opcode = i; 7356 scsi_ulto2b(j, descr->service_action); 7357 descr->flags = RSO_SERVACTV; 7358 scsi_ulto2b(sentry->length, 7359 descr->cdb_length); 7360 } 7361 } else { 7362 if (!ctl_cmd_applicable(lun->be_lun->lun_type, 7363 entry)) 7364 continue; 7365 descr = &all->descr[num++]; 7366 descr->opcode = i; 7367 scsi_ulto2b(0, descr->service_action); 7368 descr->flags = 0; 7369 scsi_ulto2b(entry->length, descr->cdb_length); 7370 } 7371 } 7372 scsi_ulto4b( 7373 num * sizeof(struct scsi_report_supported_opcodes_descr), 7374 all->length); 7375 break; 7376 case RSO_OPTIONS_OC: 7377 one = (struct scsi_report_supported_opcodes_one *) 7378 ctsio->kern_data_ptr; 7379 entry = &ctl_cmd_table[opcode]; 7380 goto fill_one; 7381 case RSO_OPTIONS_OC_SA: 7382 one = (struct scsi_report_supported_opcodes_one *) 7383 ctsio->kern_data_ptr; 7384 entry = &ctl_cmd_table[opcode]; 7385 entry = &((const struct ctl_cmd_entry *) 7386 entry->execute)[service_action]; 7387fill_one: 7388 if (ctl_cmd_applicable(lun->be_lun->lun_type, entry)) { 7389 one->support = 3; 7390 scsi_ulto2b(entry->length, one->cdb_length); 7391 one->cdb_usage[0] = opcode; 7392 memcpy(&one->cdb_usage[1], entry->usage, 7393 entry->length - 1); 7394 } else 7395 one->support = 1; 7396 break; 7397 } 7398 7399 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7400 ctsio->be_move_done = ctl_config_move_done; 7401 7402 ctl_datamove((union ctl_io *)ctsio); 7403 return(retval); 7404} 7405 7406int 7407ctl_report_supported_tmf(struct ctl_scsiio *ctsio) 7408{ 7409 struct ctl_lun *lun; 7410 struct scsi_report_supported_tmf *cdb; 7411 struct scsi_report_supported_tmf_data *data; 7412 int retval; 7413 int alloc_len, total_len; 7414 7415 CTL_DEBUG_PRINT(("ctl_report_supported_tmf\n")); 7416 7417 cdb = (struct scsi_report_supported_tmf *)ctsio->cdb; 7418 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7419 7420 retval = CTL_RETVAL_COMPLETE; 7421 7422 total_len = sizeof(struct scsi_report_supported_tmf_data); 7423 alloc_len = scsi_4btoul(cdb->length); 7424 7425 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7426 7427 ctsio->kern_sg_entries = 0; 7428 7429 if (total_len < alloc_len) { 7430 ctsio->residual = alloc_len - total_len; 7431 ctsio->kern_data_len = total_len; 7432 ctsio->kern_total_len = total_len; 7433 } else { 7434 ctsio->residual = 0; 7435 ctsio->kern_data_len = alloc_len; 7436 ctsio->kern_total_len = alloc_len; 7437 } 7438 ctsio->kern_data_resid = 0; 7439 ctsio->kern_rel_offset = 0; 7440 7441 data = (struct scsi_report_supported_tmf_data *)ctsio->kern_data_ptr; 7442 data->byte1 |= RST_ATS | RST_LURS | RST_TRS; 7443 7444 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7445 ctsio->be_move_done = ctl_config_move_done; 7446 7447 ctl_datamove((union ctl_io *)ctsio); 7448 return (retval); 7449} 7450 7451int 7452ctl_report_timestamp(struct ctl_scsiio *ctsio) 7453{ 7454 struct ctl_lun *lun; 7455 struct scsi_report_timestamp *cdb; 7456 struct scsi_report_timestamp_data *data; 7457 struct timeval tv; 7458 int64_t timestamp; 7459 int retval; 7460 int alloc_len, total_len; 7461 7462 CTL_DEBUG_PRINT(("ctl_report_timestamp\n")); 7463 7464 cdb = (struct scsi_report_timestamp *)ctsio->cdb; 7465 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7466 7467 retval = CTL_RETVAL_COMPLETE; 7468 7469 total_len = sizeof(struct scsi_report_timestamp_data); 7470 alloc_len = scsi_4btoul(cdb->length); 7471 7472 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7473 7474 ctsio->kern_sg_entries = 0; 7475 7476 if (total_len < alloc_len) { 7477 ctsio->residual = alloc_len - total_len; 7478 ctsio->kern_data_len = total_len; 7479 ctsio->kern_total_len = total_len; 7480 } else { 7481 ctsio->residual = 0; 7482 ctsio->kern_data_len = alloc_len; 7483 ctsio->kern_total_len = alloc_len; 7484 } 7485 ctsio->kern_data_resid = 0; 7486 ctsio->kern_rel_offset = 0; 7487 7488 data = (struct scsi_report_timestamp_data *)ctsio->kern_data_ptr; 7489 scsi_ulto2b(sizeof(*data) - 2, data->length); 7490 data->origin = RTS_ORIG_OUTSIDE; 7491 getmicrotime(&tv); 7492 timestamp = (int64_t)tv.tv_sec * 1000 + tv.tv_usec / 1000; 7493 scsi_ulto4b(timestamp >> 16, data->timestamp); 7494 scsi_ulto2b(timestamp & 0xffff, &data->timestamp[4]); 7495 7496 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7497 ctsio->be_move_done = ctl_config_move_done; 7498 7499 ctl_datamove((union ctl_io *)ctsio); 7500 return (retval); 7501} 7502 7503int 7504ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7505{ 7506 struct scsi_per_res_in *cdb; 7507 int alloc_len, total_len = 0; 7508 /* struct scsi_per_res_in_rsrv in_data; */ 7509 struct ctl_lun *lun; 7510 struct ctl_softc *softc; 7511 7512 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7513 7514 softc = control_softc; 7515 7516 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7517 7518 alloc_len = scsi_2btoul(cdb->length); 7519 7520 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7521 7522retry: 7523 mtx_lock(&lun->lun_lock); 7524 switch (cdb->action) { 7525 case SPRI_RK: /* read keys */ 7526 total_len = sizeof(struct scsi_per_res_in_keys) + 7527 lun->pr_key_count * 7528 sizeof(struct scsi_per_res_key); 7529 break; 7530 case SPRI_RR: /* read reservation */ 7531 if (lun->flags & CTL_LUN_PR_RESERVED) 7532 total_len = sizeof(struct scsi_per_res_in_rsrv); 7533 else 7534 total_len = sizeof(struct scsi_per_res_in_header); 7535 break; 7536 case SPRI_RC: /* report capabilities */ 7537 total_len = sizeof(struct scsi_per_res_cap); 7538 break; 7539 default: 7540 panic("Invalid PR type %x", cdb->action); 7541 } 7542 mtx_unlock(&lun->lun_lock); 7543 7544 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7545 7546 if (total_len < alloc_len) { 7547 ctsio->residual = alloc_len - total_len; 7548 ctsio->kern_data_len = total_len; 7549 ctsio->kern_total_len = total_len; 7550 } else { 7551 ctsio->residual = 0; 7552 ctsio->kern_data_len = alloc_len; 7553 ctsio->kern_total_len = alloc_len; 7554 } 7555 7556 ctsio->kern_data_resid = 0; 7557 ctsio->kern_rel_offset = 0; 7558 ctsio->kern_sg_entries = 0; 7559 7560 mtx_lock(&lun->lun_lock); 7561 switch (cdb->action) { 7562 case SPRI_RK: { // read keys 7563 struct scsi_per_res_in_keys *res_keys; 7564 int i, key_count; 7565 7566 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7567 7568 /* 7569 * We had to drop the lock to allocate our buffer, which 7570 * leaves time for someone to come in with another 7571 * persistent reservation. (That is unlikely, though, 7572 * since this should be the only persistent reservation 7573 * command active right now.) 7574 */ 7575 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7576 (lun->pr_key_count * 7577 sizeof(struct scsi_per_res_key)))){ 7578 mtx_unlock(&lun->lun_lock); 7579 free(ctsio->kern_data_ptr, M_CTL); 7580 printf("%s: reservation length changed, retrying\n", 7581 __func__); 7582 goto retry; 7583 } 7584 7585 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7586 7587 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7588 lun->pr_key_count, res_keys->header.length); 7589 7590 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7591 if (!lun->per_res[i].registered) 7592 continue; 7593 7594 /* 7595 * We used lun->pr_key_count to calculate the 7596 * size to allocate. If it turns out the number of 7597 * initiators with the registered flag set is 7598 * larger than that (i.e. they haven't been kept in 7599 * sync), we've got a problem. 7600 */ 7601 if (key_count >= lun->pr_key_count) { 7602#ifdef NEEDTOPORT 7603 csevent_log(CSC_CTL | CSC_SHELF_SW | 7604 CTL_PR_ERROR, 7605 csevent_LogType_Fault, 7606 csevent_AlertLevel_Yellow, 7607 csevent_FRU_ShelfController, 7608 csevent_FRU_Firmware, 7609 csevent_FRU_Unknown, 7610 "registered keys %d >= key " 7611 "count %d", key_count, 7612 lun->pr_key_count); 7613#endif 7614 key_count++; 7615 continue; 7616 } 7617 memcpy(res_keys->keys[key_count].key, 7618 lun->per_res[i].res_key.key, 7619 ctl_min(sizeof(res_keys->keys[key_count].key), 7620 sizeof(lun->per_res[i].res_key))); 7621 key_count++; 7622 } 7623 break; 7624 } 7625 case SPRI_RR: { // read reservation 7626 struct scsi_per_res_in_rsrv *res; 7627 int tmp_len, header_only; 7628 7629 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7630 7631 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7632 7633 if (lun->flags & CTL_LUN_PR_RESERVED) 7634 { 7635 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7636 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7637 res->header.length); 7638 header_only = 0; 7639 } else { 7640 tmp_len = sizeof(struct scsi_per_res_in_header); 7641 scsi_ulto4b(0, res->header.length); 7642 header_only = 1; 7643 } 7644 7645 /* 7646 * We had to drop the lock to allocate our buffer, which 7647 * leaves time for someone to come in with another 7648 * persistent reservation. (That is unlikely, though, 7649 * since this should be the only persistent reservation 7650 * command active right now.) 7651 */ 7652 if (tmp_len != total_len) { 7653 mtx_unlock(&lun->lun_lock); 7654 free(ctsio->kern_data_ptr, M_CTL); 7655 printf("%s: reservation status changed, retrying\n", 7656 __func__); 7657 goto retry; 7658 } 7659 7660 /* 7661 * No reservation held, so we're done. 7662 */ 7663 if (header_only != 0) 7664 break; 7665 7666 /* 7667 * If the registration is an All Registrants type, the key 7668 * is 0, since it doesn't really matter. 7669 */ 7670 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7671 memcpy(res->data.reservation, 7672 &lun->per_res[lun->pr_res_idx].res_key, 7673 sizeof(struct scsi_per_res_key)); 7674 } 7675 res->data.scopetype = lun->res_type; 7676 break; 7677 } 7678 case SPRI_RC: //report capabilities 7679 { 7680 struct scsi_per_res_cap *res_cap; 7681 uint16_t type_mask; 7682 7683 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7684 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7685 res_cap->flags2 |= SPRI_TMV | SPRI_ALLOW_3; 7686 type_mask = SPRI_TM_WR_EX_AR | 7687 SPRI_TM_EX_AC_RO | 7688 SPRI_TM_WR_EX_RO | 7689 SPRI_TM_EX_AC | 7690 SPRI_TM_WR_EX | 7691 SPRI_TM_EX_AC_AR; 7692 scsi_ulto2b(type_mask, res_cap->type_mask); 7693 break; 7694 } 7695 case SPRI_RS: //read full status 7696 default: 7697 /* 7698 * This is a bug, because we just checked for this above, 7699 * and should have returned an error. 7700 */ 7701 panic("Invalid PR type %x", cdb->action); 7702 break; /* NOTREACHED */ 7703 } 7704 mtx_unlock(&lun->lun_lock); 7705 7706 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7707 ctsio->be_move_done = ctl_config_move_done; 7708 7709 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7710 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7711 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7712 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7713 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7714 7715 ctl_datamove((union ctl_io *)ctsio); 7716 7717 return (CTL_RETVAL_COMPLETE); 7718} 7719 7720/* 7721 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7722 * it should return. 7723 */ 7724static int 7725ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7726 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7727 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7728 struct scsi_per_res_out_parms* param) 7729{ 7730 union ctl_ha_msg persis_io; 7731 int retval, i; 7732 int isc_retval; 7733 7734 retval = 0; 7735 7736 mtx_lock(&lun->lun_lock); 7737 if (sa_res_key == 0) { 7738 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7739 /* validate scope and type */ 7740 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7741 SPR_LU_SCOPE) { 7742 mtx_unlock(&lun->lun_lock); 7743 ctl_set_invalid_field(/*ctsio*/ ctsio, 7744 /*sks_valid*/ 1, 7745 /*command*/ 1, 7746 /*field*/ 2, 7747 /*bit_valid*/ 1, 7748 /*bit*/ 4); 7749 ctl_done((union ctl_io *)ctsio); 7750 return (1); 7751 } 7752 7753 if (type>8 || type==2 || type==4 || type==0) { 7754 mtx_unlock(&lun->lun_lock); 7755 ctl_set_invalid_field(/*ctsio*/ ctsio, 7756 /*sks_valid*/ 1, 7757 /*command*/ 1, 7758 /*field*/ 2, 7759 /*bit_valid*/ 1, 7760 /*bit*/ 0); 7761 ctl_done((union ctl_io *)ctsio); 7762 return (1); 7763 } 7764 7765 /* temporarily unregister this nexus */ 7766 lun->per_res[residx].registered = 0; 7767 7768 /* 7769 * Unregister everybody else and build UA for 7770 * them 7771 */ 7772 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7773 if (lun->per_res[i].registered == 0) 7774 continue; 7775 7776 if (!persis_offset 7777 && i <CTL_MAX_INITIATORS) 7778 lun->pending_sense[i].ua_pending |= 7779 CTL_UA_REG_PREEMPT; 7780 else if (persis_offset 7781 && i >= persis_offset) 7782 lun->pending_sense[i-persis_offset 7783 ].ua_pending |= 7784 CTL_UA_REG_PREEMPT; 7785 lun->per_res[i].registered = 0; 7786 memset(&lun->per_res[i].res_key, 0, 7787 sizeof(struct scsi_per_res_key)); 7788 } 7789 lun->per_res[residx].registered = 1; 7790 lun->pr_key_count = 1; 7791 lun->res_type = type; 7792 if (lun->res_type != SPR_TYPE_WR_EX_AR 7793 && lun->res_type != SPR_TYPE_EX_AC_AR) 7794 lun->pr_res_idx = residx; 7795 7796 /* send msg to other side */ 7797 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7798 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7799 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7800 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7801 persis_io.pr.pr_info.res_type = type; 7802 memcpy(persis_io.pr.pr_info.sa_res_key, 7803 param->serv_act_res_key, 7804 sizeof(param->serv_act_res_key)); 7805 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7806 &persis_io, sizeof(persis_io), 0)) > 7807 CTL_HA_STATUS_SUCCESS) { 7808 printf("CTL:Persis Out error returned " 7809 "from ctl_ha_msg_send %d\n", 7810 isc_retval); 7811 } 7812 } else { 7813 /* not all registrants */ 7814 mtx_unlock(&lun->lun_lock); 7815 free(ctsio->kern_data_ptr, M_CTL); 7816 ctl_set_invalid_field(ctsio, 7817 /*sks_valid*/ 1, 7818 /*command*/ 0, 7819 /*field*/ 8, 7820 /*bit_valid*/ 0, 7821 /*bit*/ 0); 7822 ctl_done((union ctl_io *)ctsio); 7823 return (1); 7824 } 7825 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7826 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7827 int found = 0; 7828 7829 if (res_key == sa_res_key) { 7830 /* special case */ 7831 /* 7832 * The spec implies this is not good but doesn't 7833 * say what to do. There are two choices either 7834 * generate a res conflict or check condition 7835 * with illegal field in parameter data. Since 7836 * that is what is done when the sa_res_key is 7837 * zero I'll take that approach since this has 7838 * to do with the sa_res_key. 7839 */ 7840 mtx_unlock(&lun->lun_lock); 7841 free(ctsio->kern_data_ptr, M_CTL); 7842 ctl_set_invalid_field(ctsio, 7843 /*sks_valid*/ 1, 7844 /*command*/ 0, 7845 /*field*/ 8, 7846 /*bit_valid*/ 0, 7847 /*bit*/ 0); 7848 ctl_done((union ctl_io *)ctsio); 7849 return (1); 7850 } 7851 7852 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7853 if (lun->per_res[i].registered 7854 && memcmp(param->serv_act_res_key, 7855 lun->per_res[i].res_key.key, 7856 sizeof(struct scsi_per_res_key)) != 0) 7857 continue; 7858 7859 found = 1; 7860 lun->per_res[i].registered = 0; 7861 memset(&lun->per_res[i].res_key, 0, 7862 sizeof(struct scsi_per_res_key)); 7863 lun->pr_key_count--; 7864 7865 if (!persis_offset 7866 && i < CTL_MAX_INITIATORS) 7867 lun->pending_sense[i].ua_pending |= 7868 CTL_UA_REG_PREEMPT; 7869 else if (persis_offset 7870 && i >= persis_offset) 7871 lun->pending_sense[i-persis_offset].ua_pending|= 7872 CTL_UA_REG_PREEMPT; 7873 } 7874 if (!found) { 7875 mtx_unlock(&lun->lun_lock); 7876 free(ctsio->kern_data_ptr, M_CTL); 7877 ctl_set_reservation_conflict(ctsio); 7878 ctl_done((union ctl_io *)ctsio); 7879 return (CTL_RETVAL_COMPLETE); 7880 } 7881 /* send msg to other side */ 7882 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7883 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7884 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7885 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7886 persis_io.pr.pr_info.res_type = type; 7887 memcpy(persis_io.pr.pr_info.sa_res_key, 7888 param->serv_act_res_key, 7889 sizeof(param->serv_act_res_key)); 7890 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7891 &persis_io, sizeof(persis_io), 0)) > 7892 CTL_HA_STATUS_SUCCESS) { 7893 printf("CTL:Persis Out error returned from " 7894 "ctl_ha_msg_send %d\n", isc_retval); 7895 } 7896 } else { 7897 /* Reserved but not all registrants */ 7898 /* sa_res_key is res holder */ 7899 if (memcmp(param->serv_act_res_key, 7900 lun->per_res[lun->pr_res_idx].res_key.key, 7901 sizeof(struct scsi_per_res_key)) == 0) { 7902 /* validate scope and type */ 7903 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7904 SPR_LU_SCOPE) { 7905 mtx_unlock(&lun->lun_lock); 7906 ctl_set_invalid_field(/*ctsio*/ ctsio, 7907 /*sks_valid*/ 1, 7908 /*command*/ 1, 7909 /*field*/ 2, 7910 /*bit_valid*/ 1, 7911 /*bit*/ 4); 7912 ctl_done((union ctl_io *)ctsio); 7913 return (1); 7914 } 7915 7916 if (type>8 || type==2 || type==4 || type==0) { 7917 mtx_unlock(&lun->lun_lock); 7918 ctl_set_invalid_field(/*ctsio*/ ctsio, 7919 /*sks_valid*/ 1, 7920 /*command*/ 1, 7921 /*field*/ 2, 7922 /*bit_valid*/ 1, 7923 /*bit*/ 0); 7924 ctl_done((union ctl_io *)ctsio); 7925 return (1); 7926 } 7927 7928 /* 7929 * Do the following: 7930 * if sa_res_key != res_key remove all 7931 * registrants w/sa_res_key and generate UA 7932 * for these registrants(Registrations 7933 * Preempted) if it wasn't an exclusive 7934 * reservation generate UA(Reservations 7935 * Preempted) for all other registered nexuses 7936 * if the type has changed. Establish the new 7937 * reservation and holder. If res_key and 7938 * sa_res_key are the same do the above 7939 * except don't unregister the res holder. 7940 */ 7941 7942 /* 7943 * Temporarily unregister so it won't get 7944 * removed or UA generated 7945 */ 7946 lun->per_res[residx].registered = 0; 7947 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7948 if (lun->per_res[i].registered == 0) 7949 continue; 7950 7951 if (memcmp(param->serv_act_res_key, 7952 lun->per_res[i].res_key.key, 7953 sizeof(struct scsi_per_res_key)) == 0) { 7954 lun->per_res[i].registered = 0; 7955 memset(&lun->per_res[i].res_key, 7956 0, 7957 sizeof(struct scsi_per_res_key)); 7958 lun->pr_key_count--; 7959 7960 if (!persis_offset 7961 && i < CTL_MAX_INITIATORS) 7962 lun->pending_sense[i 7963 ].ua_pending |= 7964 CTL_UA_REG_PREEMPT; 7965 else if (persis_offset 7966 && i >= persis_offset) 7967 lun->pending_sense[ 7968 i-persis_offset].ua_pending |= 7969 CTL_UA_REG_PREEMPT; 7970 } else if (type != lun->res_type 7971 && (lun->res_type == SPR_TYPE_WR_EX_RO 7972 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7973 if (!persis_offset 7974 && i < CTL_MAX_INITIATORS) 7975 lun->pending_sense[i 7976 ].ua_pending |= 7977 CTL_UA_RES_RELEASE; 7978 else if (persis_offset 7979 && i >= persis_offset) 7980 lun->pending_sense[ 7981 i-persis_offset 7982 ].ua_pending |= 7983 CTL_UA_RES_RELEASE; 7984 } 7985 } 7986 lun->per_res[residx].registered = 1; 7987 lun->res_type = type; 7988 if (lun->res_type != SPR_TYPE_WR_EX_AR 7989 && lun->res_type != SPR_TYPE_EX_AC_AR) 7990 lun->pr_res_idx = residx; 7991 else 7992 lun->pr_res_idx = 7993 CTL_PR_ALL_REGISTRANTS; 7994 7995 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7996 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7997 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7998 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7999 persis_io.pr.pr_info.res_type = type; 8000 memcpy(persis_io.pr.pr_info.sa_res_key, 8001 param->serv_act_res_key, 8002 sizeof(param->serv_act_res_key)); 8003 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8004 &persis_io, sizeof(persis_io), 0)) > 8005 CTL_HA_STATUS_SUCCESS) { 8006 printf("CTL:Persis Out error returned " 8007 "from ctl_ha_msg_send %d\n", 8008 isc_retval); 8009 } 8010 } else { 8011 /* 8012 * sa_res_key is not the res holder just 8013 * remove registrants 8014 */ 8015 int found=0; 8016 8017 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8018 if (memcmp(param->serv_act_res_key, 8019 lun->per_res[i].res_key.key, 8020 sizeof(struct scsi_per_res_key)) != 0) 8021 continue; 8022 8023 found = 1; 8024 lun->per_res[i].registered = 0; 8025 memset(&lun->per_res[i].res_key, 0, 8026 sizeof(struct scsi_per_res_key)); 8027 lun->pr_key_count--; 8028 8029 if (!persis_offset 8030 && i < CTL_MAX_INITIATORS) 8031 lun->pending_sense[i].ua_pending |= 8032 CTL_UA_REG_PREEMPT; 8033 else if (persis_offset 8034 && i >= persis_offset) 8035 lun->pending_sense[ 8036 i-persis_offset].ua_pending |= 8037 CTL_UA_REG_PREEMPT; 8038 } 8039 8040 if (!found) { 8041 mtx_unlock(&lun->lun_lock); 8042 free(ctsio->kern_data_ptr, M_CTL); 8043 ctl_set_reservation_conflict(ctsio); 8044 ctl_done((union ctl_io *)ctsio); 8045 return (1); 8046 } 8047 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8048 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8049 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 8050 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8051 persis_io.pr.pr_info.res_type = type; 8052 memcpy(persis_io.pr.pr_info.sa_res_key, 8053 param->serv_act_res_key, 8054 sizeof(param->serv_act_res_key)); 8055 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8056 &persis_io, sizeof(persis_io), 0)) > 8057 CTL_HA_STATUS_SUCCESS) { 8058 printf("CTL:Persis Out error returned " 8059 "from ctl_ha_msg_send %d\n", 8060 isc_retval); 8061 } 8062 } 8063 } 8064 8065 lun->PRGeneration++; 8066 mtx_unlock(&lun->lun_lock); 8067 8068 return (retval); 8069} 8070 8071static void 8072ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 8073{ 8074 int i; 8075 8076 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 8077 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 8078 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 8079 msg->pr.pr_info.sa_res_key, 8080 sizeof(struct scsi_per_res_key)) != 0) { 8081 uint64_t sa_res_key; 8082 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 8083 8084 if (sa_res_key == 0) { 8085 /* temporarily unregister this nexus */ 8086 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8087 8088 /* 8089 * Unregister everybody else and build UA for 8090 * them 8091 */ 8092 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8093 if (lun->per_res[i].registered == 0) 8094 continue; 8095 8096 if (!persis_offset 8097 && i < CTL_MAX_INITIATORS) 8098 lun->pending_sense[i].ua_pending |= 8099 CTL_UA_REG_PREEMPT; 8100 else if (persis_offset && i >= persis_offset) 8101 lun->pending_sense[i - 8102 persis_offset].ua_pending |= 8103 CTL_UA_REG_PREEMPT; 8104 lun->per_res[i].registered = 0; 8105 memset(&lun->per_res[i].res_key, 0, 8106 sizeof(struct scsi_per_res_key)); 8107 } 8108 8109 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8110 lun->pr_key_count = 1; 8111 lun->res_type = msg->pr.pr_info.res_type; 8112 if (lun->res_type != SPR_TYPE_WR_EX_AR 8113 && lun->res_type != SPR_TYPE_EX_AC_AR) 8114 lun->pr_res_idx = msg->pr.pr_info.residx; 8115 } else { 8116 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8117 if (memcmp(msg->pr.pr_info.sa_res_key, 8118 lun->per_res[i].res_key.key, 8119 sizeof(struct scsi_per_res_key)) != 0) 8120 continue; 8121 8122 lun->per_res[i].registered = 0; 8123 memset(&lun->per_res[i].res_key, 0, 8124 sizeof(struct scsi_per_res_key)); 8125 lun->pr_key_count--; 8126 8127 if (!persis_offset 8128 && i < persis_offset) 8129 lun->pending_sense[i].ua_pending |= 8130 CTL_UA_REG_PREEMPT; 8131 else if (persis_offset 8132 && i >= persis_offset) 8133 lun->pending_sense[i - 8134 persis_offset].ua_pending |= 8135 CTL_UA_REG_PREEMPT; 8136 } 8137 } 8138 } else { 8139 /* 8140 * Temporarily unregister so it won't get removed 8141 * or UA generated 8142 */ 8143 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8144 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8145 if (lun->per_res[i].registered == 0) 8146 continue; 8147 8148 if (memcmp(msg->pr.pr_info.sa_res_key, 8149 lun->per_res[i].res_key.key, 8150 sizeof(struct scsi_per_res_key)) == 0) { 8151 lun->per_res[i].registered = 0; 8152 memset(&lun->per_res[i].res_key, 0, 8153 sizeof(struct scsi_per_res_key)); 8154 lun->pr_key_count--; 8155 if (!persis_offset 8156 && i < CTL_MAX_INITIATORS) 8157 lun->pending_sense[i].ua_pending |= 8158 CTL_UA_REG_PREEMPT; 8159 else if (persis_offset 8160 && i >= persis_offset) 8161 lun->pending_sense[i - 8162 persis_offset].ua_pending |= 8163 CTL_UA_REG_PREEMPT; 8164 } else if (msg->pr.pr_info.res_type != lun->res_type 8165 && (lun->res_type == SPR_TYPE_WR_EX_RO 8166 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 8167 if (!persis_offset 8168 && i < persis_offset) 8169 lun->pending_sense[i 8170 ].ua_pending |= 8171 CTL_UA_RES_RELEASE; 8172 else if (persis_offset 8173 && i >= persis_offset) 8174 lun->pending_sense[i - 8175 persis_offset].ua_pending |= 8176 CTL_UA_RES_RELEASE; 8177 } 8178 } 8179 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8180 lun->res_type = msg->pr.pr_info.res_type; 8181 if (lun->res_type != SPR_TYPE_WR_EX_AR 8182 && lun->res_type != SPR_TYPE_EX_AC_AR) 8183 lun->pr_res_idx = msg->pr.pr_info.residx; 8184 else 8185 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8186 } 8187 lun->PRGeneration++; 8188 8189} 8190 8191 8192int 8193ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 8194{ 8195 int retval; 8196 int isc_retval; 8197 u_int32_t param_len; 8198 struct scsi_per_res_out *cdb; 8199 struct ctl_lun *lun; 8200 struct scsi_per_res_out_parms* param; 8201 struct ctl_softc *softc; 8202 uint32_t residx; 8203 uint64_t res_key, sa_res_key; 8204 uint8_t type; 8205 union ctl_ha_msg persis_io; 8206 int i; 8207 8208 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8209 8210 retval = CTL_RETVAL_COMPLETE; 8211 8212 softc = control_softc; 8213 8214 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8215 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8216 8217 /* 8218 * We only support whole-LUN scope. The scope & type are ignored for 8219 * register, register and ignore existing key and clear. 8220 * We sometimes ignore scope and type on preempts too!! 8221 * Verify reservation type here as well. 8222 */ 8223 type = cdb->scope_type & SPR_TYPE_MASK; 8224 if ((cdb->action == SPRO_RESERVE) 8225 || (cdb->action == SPRO_RELEASE)) { 8226 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8227 ctl_set_invalid_field(/*ctsio*/ ctsio, 8228 /*sks_valid*/ 1, 8229 /*command*/ 1, 8230 /*field*/ 2, 8231 /*bit_valid*/ 1, 8232 /*bit*/ 4); 8233 ctl_done((union ctl_io *)ctsio); 8234 return (CTL_RETVAL_COMPLETE); 8235 } 8236 8237 if (type>8 || type==2 || type==4 || type==0) { 8238 ctl_set_invalid_field(/*ctsio*/ ctsio, 8239 /*sks_valid*/ 1, 8240 /*command*/ 1, 8241 /*field*/ 2, 8242 /*bit_valid*/ 1, 8243 /*bit*/ 0); 8244 ctl_done((union ctl_io *)ctsio); 8245 return (CTL_RETVAL_COMPLETE); 8246 } 8247 } 8248 8249 param_len = scsi_4btoul(cdb->length); 8250 8251 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8252 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8253 ctsio->kern_data_len = param_len; 8254 ctsio->kern_total_len = param_len; 8255 ctsio->kern_data_resid = 0; 8256 ctsio->kern_rel_offset = 0; 8257 ctsio->kern_sg_entries = 0; 8258 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8259 ctsio->be_move_done = ctl_config_move_done; 8260 ctl_datamove((union ctl_io *)ctsio); 8261 8262 return (CTL_RETVAL_COMPLETE); 8263 } 8264 8265 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8266 8267 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8268 res_key = scsi_8btou64(param->res_key.key); 8269 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8270 8271 /* 8272 * Validate the reservation key here except for SPRO_REG_IGNO 8273 * This must be done for all other service actions 8274 */ 8275 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8276 mtx_lock(&lun->lun_lock); 8277 if (lun->per_res[residx].registered) { 8278 if (memcmp(param->res_key.key, 8279 lun->per_res[residx].res_key.key, 8280 ctl_min(sizeof(param->res_key), 8281 sizeof(lun->per_res[residx].res_key))) != 0) { 8282 /* 8283 * The current key passed in doesn't match 8284 * the one the initiator previously 8285 * registered. 8286 */ 8287 mtx_unlock(&lun->lun_lock); 8288 free(ctsio->kern_data_ptr, M_CTL); 8289 ctl_set_reservation_conflict(ctsio); 8290 ctl_done((union ctl_io *)ctsio); 8291 return (CTL_RETVAL_COMPLETE); 8292 } 8293 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8294 /* 8295 * We are not registered 8296 */ 8297 mtx_unlock(&lun->lun_lock); 8298 free(ctsio->kern_data_ptr, M_CTL); 8299 ctl_set_reservation_conflict(ctsio); 8300 ctl_done((union ctl_io *)ctsio); 8301 return (CTL_RETVAL_COMPLETE); 8302 } else if (res_key != 0) { 8303 /* 8304 * We are not registered and trying to register but 8305 * the register key isn't zero. 8306 */ 8307 mtx_unlock(&lun->lun_lock); 8308 free(ctsio->kern_data_ptr, M_CTL); 8309 ctl_set_reservation_conflict(ctsio); 8310 ctl_done((union ctl_io *)ctsio); 8311 return (CTL_RETVAL_COMPLETE); 8312 } 8313 mtx_unlock(&lun->lun_lock); 8314 } 8315 8316 switch (cdb->action & SPRO_ACTION_MASK) { 8317 case SPRO_REGISTER: 8318 case SPRO_REG_IGNO: { 8319 8320#if 0 8321 printf("Registration received\n"); 8322#endif 8323 8324 /* 8325 * We don't support any of these options, as we report in 8326 * the read capabilities request (see 8327 * ctl_persistent_reserve_in(), above). 8328 */ 8329 if ((param->flags & SPR_SPEC_I_PT) 8330 || (param->flags & SPR_ALL_TG_PT) 8331 || (param->flags & SPR_APTPL)) { 8332 int bit_ptr; 8333 8334 if (param->flags & SPR_APTPL) 8335 bit_ptr = 0; 8336 else if (param->flags & SPR_ALL_TG_PT) 8337 bit_ptr = 2; 8338 else /* SPR_SPEC_I_PT */ 8339 bit_ptr = 3; 8340 8341 free(ctsio->kern_data_ptr, M_CTL); 8342 ctl_set_invalid_field(ctsio, 8343 /*sks_valid*/ 1, 8344 /*command*/ 0, 8345 /*field*/ 20, 8346 /*bit_valid*/ 1, 8347 /*bit*/ bit_ptr); 8348 ctl_done((union ctl_io *)ctsio); 8349 return (CTL_RETVAL_COMPLETE); 8350 } 8351 8352 mtx_lock(&lun->lun_lock); 8353 8354 /* 8355 * The initiator wants to clear the 8356 * key/unregister. 8357 */ 8358 if (sa_res_key == 0) { 8359 if ((res_key == 0 8360 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8361 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8362 && !lun->per_res[residx].registered)) { 8363 mtx_unlock(&lun->lun_lock); 8364 goto done; 8365 } 8366 8367 lun->per_res[residx].registered = 0; 8368 memset(&lun->per_res[residx].res_key, 8369 0, sizeof(lun->per_res[residx].res_key)); 8370 lun->pr_key_count--; 8371 8372 if (residx == lun->pr_res_idx) { 8373 lun->flags &= ~CTL_LUN_PR_RESERVED; 8374 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8375 8376 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8377 || lun->res_type == SPR_TYPE_EX_AC_RO) 8378 && lun->pr_key_count) { 8379 /* 8380 * If the reservation is a registrants 8381 * only type we need to generate a UA 8382 * for other registered inits. The 8383 * sense code should be RESERVATIONS 8384 * RELEASED 8385 */ 8386 8387 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8388 if (lun->per_res[ 8389 i+persis_offset].registered 8390 == 0) 8391 continue; 8392 lun->pending_sense[i 8393 ].ua_pending |= 8394 CTL_UA_RES_RELEASE; 8395 } 8396 } 8397 lun->res_type = 0; 8398 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8399 if (lun->pr_key_count==0) { 8400 lun->flags &= ~CTL_LUN_PR_RESERVED; 8401 lun->res_type = 0; 8402 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8403 } 8404 } 8405 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8406 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8407 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8408 persis_io.pr.pr_info.residx = residx; 8409 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8410 &persis_io, sizeof(persis_io), 0 )) > 8411 CTL_HA_STATUS_SUCCESS) { 8412 printf("CTL:Persis Out error returned from " 8413 "ctl_ha_msg_send %d\n", isc_retval); 8414 } 8415 } else /* sa_res_key != 0 */ { 8416 8417 /* 8418 * If we aren't registered currently then increment 8419 * the key count and set the registered flag. 8420 */ 8421 if (!lun->per_res[residx].registered) { 8422 lun->pr_key_count++; 8423 lun->per_res[residx].registered = 1; 8424 } 8425 8426 memcpy(&lun->per_res[residx].res_key, 8427 param->serv_act_res_key, 8428 ctl_min(sizeof(param->serv_act_res_key), 8429 sizeof(lun->per_res[residx].res_key))); 8430 8431 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8432 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8433 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8434 persis_io.pr.pr_info.residx = residx; 8435 memcpy(persis_io.pr.pr_info.sa_res_key, 8436 param->serv_act_res_key, 8437 sizeof(param->serv_act_res_key)); 8438 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8439 &persis_io, sizeof(persis_io), 0)) > 8440 CTL_HA_STATUS_SUCCESS) { 8441 printf("CTL:Persis Out error returned from " 8442 "ctl_ha_msg_send %d\n", isc_retval); 8443 } 8444 } 8445 lun->PRGeneration++; 8446 mtx_unlock(&lun->lun_lock); 8447 8448 break; 8449 } 8450 case SPRO_RESERVE: 8451#if 0 8452 printf("Reserve executed type %d\n", type); 8453#endif 8454 mtx_lock(&lun->lun_lock); 8455 if (lun->flags & CTL_LUN_PR_RESERVED) { 8456 /* 8457 * if this isn't the reservation holder and it's 8458 * not a "all registrants" type or if the type is 8459 * different then we have a conflict 8460 */ 8461 if ((lun->pr_res_idx != residx 8462 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8463 || lun->res_type != type) { 8464 mtx_unlock(&lun->lun_lock); 8465 free(ctsio->kern_data_ptr, M_CTL); 8466 ctl_set_reservation_conflict(ctsio); 8467 ctl_done((union ctl_io *)ctsio); 8468 return (CTL_RETVAL_COMPLETE); 8469 } 8470 mtx_unlock(&lun->lun_lock); 8471 } else /* create a reservation */ { 8472 /* 8473 * If it's not an "all registrants" type record 8474 * reservation holder 8475 */ 8476 if (type != SPR_TYPE_WR_EX_AR 8477 && type != SPR_TYPE_EX_AC_AR) 8478 lun->pr_res_idx = residx; /* Res holder */ 8479 else 8480 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8481 8482 lun->flags |= CTL_LUN_PR_RESERVED; 8483 lun->res_type = type; 8484 8485 mtx_unlock(&lun->lun_lock); 8486 8487 /* send msg to other side */ 8488 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8489 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8490 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8491 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8492 persis_io.pr.pr_info.res_type = type; 8493 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8494 &persis_io, sizeof(persis_io), 0)) > 8495 CTL_HA_STATUS_SUCCESS) { 8496 printf("CTL:Persis Out error returned from " 8497 "ctl_ha_msg_send %d\n", isc_retval); 8498 } 8499 } 8500 break; 8501 8502 case SPRO_RELEASE: 8503 mtx_lock(&lun->lun_lock); 8504 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8505 /* No reservation exists return good status */ 8506 mtx_unlock(&lun->lun_lock); 8507 goto done; 8508 } 8509 /* 8510 * Is this nexus a reservation holder? 8511 */ 8512 if (lun->pr_res_idx != residx 8513 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8514 /* 8515 * not a res holder return good status but 8516 * do nothing 8517 */ 8518 mtx_unlock(&lun->lun_lock); 8519 goto done; 8520 } 8521 8522 if (lun->res_type != type) { 8523 mtx_unlock(&lun->lun_lock); 8524 free(ctsio->kern_data_ptr, M_CTL); 8525 ctl_set_illegal_pr_release(ctsio); 8526 ctl_done((union ctl_io *)ctsio); 8527 return (CTL_RETVAL_COMPLETE); 8528 } 8529 8530 /* okay to release */ 8531 lun->flags &= ~CTL_LUN_PR_RESERVED; 8532 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8533 lun->res_type = 0; 8534 8535 /* 8536 * if this isn't an exclusive access 8537 * res generate UA for all other 8538 * registrants. 8539 */ 8540 if (type != SPR_TYPE_EX_AC 8541 && type != SPR_TYPE_WR_EX) { 8542 /* 8543 * temporarily unregister so we don't generate UA 8544 */ 8545 lun->per_res[residx].registered = 0; 8546 8547 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8548 if (lun->per_res[i+persis_offset].registered 8549 == 0) 8550 continue; 8551 lun->pending_sense[i].ua_pending |= 8552 CTL_UA_RES_RELEASE; 8553 } 8554 8555 lun->per_res[residx].registered = 1; 8556 } 8557 mtx_unlock(&lun->lun_lock); 8558 /* Send msg to other side */ 8559 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8560 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8561 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8562 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8563 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8564 printf("CTL:Persis Out error returned from " 8565 "ctl_ha_msg_send %d\n", isc_retval); 8566 } 8567 break; 8568 8569 case SPRO_CLEAR: 8570 /* send msg to other side */ 8571 8572 mtx_lock(&lun->lun_lock); 8573 lun->flags &= ~CTL_LUN_PR_RESERVED; 8574 lun->res_type = 0; 8575 lun->pr_key_count = 0; 8576 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8577 8578 8579 memset(&lun->per_res[residx].res_key, 8580 0, sizeof(lun->per_res[residx].res_key)); 8581 lun->per_res[residx].registered = 0; 8582 8583 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8584 if (lun->per_res[i].registered) { 8585 if (!persis_offset && i < CTL_MAX_INITIATORS) 8586 lun->pending_sense[i].ua_pending |= 8587 CTL_UA_RES_PREEMPT; 8588 else if (persis_offset && i >= persis_offset) 8589 lun->pending_sense[i-persis_offset 8590 ].ua_pending |= CTL_UA_RES_PREEMPT; 8591 8592 memset(&lun->per_res[i].res_key, 8593 0, sizeof(struct scsi_per_res_key)); 8594 lun->per_res[i].registered = 0; 8595 } 8596 lun->PRGeneration++; 8597 mtx_unlock(&lun->lun_lock); 8598 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8599 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8600 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8601 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8602 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8603 printf("CTL:Persis Out error returned from " 8604 "ctl_ha_msg_send %d\n", isc_retval); 8605 } 8606 break; 8607 8608 case SPRO_PREEMPT: { 8609 int nretval; 8610 8611 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8612 residx, ctsio, cdb, param); 8613 if (nretval != 0) 8614 return (CTL_RETVAL_COMPLETE); 8615 break; 8616 } 8617 default: 8618 panic("Invalid PR type %x", cdb->action); 8619 } 8620 8621done: 8622 free(ctsio->kern_data_ptr, M_CTL); 8623 ctl_set_success(ctsio); 8624 ctl_done((union ctl_io *)ctsio); 8625 8626 return (retval); 8627} 8628 8629/* 8630 * This routine is for handling a message from the other SC pertaining to 8631 * persistent reserve out. All the error checking will have been done 8632 * so only perorming the action need be done here to keep the two 8633 * in sync. 8634 */ 8635static void 8636ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8637{ 8638 struct ctl_lun *lun; 8639 struct ctl_softc *softc; 8640 int i; 8641 uint32_t targ_lun; 8642 8643 softc = control_softc; 8644 8645 targ_lun = msg->hdr.nexus.targ_mapped_lun; 8646 lun = softc->ctl_luns[targ_lun]; 8647 mtx_lock(&lun->lun_lock); 8648 switch(msg->pr.pr_info.action) { 8649 case CTL_PR_REG_KEY: 8650 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8651 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8652 lun->pr_key_count++; 8653 } 8654 lun->PRGeneration++; 8655 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8656 msg->pr.pr_info.sa_res_key, 8657 sizeof(struct scsi_per_res_key)); 8658 break; 8659 8660 case CTL_PR_UNREG_KEY: 8661 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8662 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8663 0, sizeof(struct scsi_per_res_key)); 8664 lun->pr_key_count--; 8665 8666 /* XXX Need to see if the reservation has been released */ 8667 /* if so do we need to generate UA? */ 8668 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8669 lun->flags &= ~CTL_LUN_PR_RESERVED; 8670 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8671 8672 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8673 || lun->res_type == SPR_TYPE_EX_AC_RO) 8674 && lun->pr_key_count) { 8675 /* 8676 * If the reservation is a registrants 8677 * only type we need to generate a UA 8678 * for other registered inits. The 8679 * sense code should be RESERVATIONS 8680 * RELEASED 8681 */ 8682 8683 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8684 if (lun->per_res[i+ 8685 persis_offset].registered == 0) 8686 continue; 8687 8688 lun->pending_sense[i 8689 ].ua_pending |= 8690 CTL_UA_RES_RELEASE; 8691 } 8692 } 8693 lun->res_type = 0; 8694 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8695 if (lun->pr_key_count==0) { 8696 lun->flags &= ~CTL_LUN_PR_RESERVED; 8697 lun->res_type = 0; 8698 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8699 } 8700 } 8701 lun->PRGeneration++; 8702 break; 8703 8704 case CTL_PR_RESERVE: 8705 lun->flags |= CTL_LUN_PR_RESERVED; 8706 lun->res_type = msg->pr.pr_info.res_type; 8707 lun->pr_res_idx = msg->pr.pr_info.residx; 8708 8709 break; 8710 8711 case CTL_PR_RELEASE: 8712 /* 8713 * if this isn't an exclusive access res generate UA for all 8714 * other registrants. 8715 */ 8716 if (lun->res_type != SPR_TYPE_EX_AC 8717 && lun->res_type != SPR_TYPE_WR_EX) { 8718 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8719 if (lun->per_res[i+persis_offset].registered) 8720 lun->pending_sense[i].ua_pending |= 8721 CTL_UA_RES_RELEASE; 8722 } 8723 8724 lun->flags &= ~CTL_LUN_PR_RESERVED; 8725 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8726 lun->res_type = 0; 8727 break; 8728 8729 case CTL_PR_PREEMPT: 8730 ctl_pro_preempt_other(lun, msg); 8731 break; 8732 case CTL_PR_CLEAR: 8733 lun->flags &= ~CTL_LUN_PR_RESERVED; 8734 lun->res_type = 0; 8735 lun->pr_key_count = 0; 8736 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8737 8738 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8739 if (lun->per_res[i].registered == 0) 8740 continue; 8741 if (!persis_offset 8742 && i < CTL_MAX_INITIATORS) 8743 lun->pending_sense[i].ua_pending |= 8744 CTL_UA_RES_PREEMPT; 8745 else if (persis_offset 8746 && i >= persis_offset) 8747 lun->pending_sense[i-persis_offset].ua_pending|= 8748 CTL_UA_RES_PREEMPT; 8749 memset(&lun->per_res[i].res_key, 0, 8750 sizeof(struct scsi_per_res_key)); 8751 lun->per_res[i].registered = 0; 8752 } 8753 lun->PRGeneration++; 8754 break; 8755 } 8756 8757 mtx_unlock(&lun->lun_lock); 8758} 8759 8760int 8761ctl_read_write(struct ctl_scsiio *ctsio) 8762{ 8763 struct ctl_lun *lun; 8764 struct ctl_lba_len_flags *lbalen; 8765 uint64_t lba; 8766 uint32_t num_blocks; 8767 int fua, dpo; 8768 int retval; 8769 int isread; 8770 8771 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8772 8773 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8774 8775 fua = 0; 8776 dpo = 0; 8777 8778 retval = CTL_RETVAL_COMPLETE; 8779 8780 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8781 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8782 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8783 uint32_t residx; 8784 8785 /* 8786 * XXX KDM need a lock here. 8787 */ 8788 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8789 if ((lun->res_type == SPR_TYPE_EX_AC 8790 && residx != lun->pr_res_idx) 8791 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8792 || lun->res_type == SPR_TYPE_EX_AC_AR) 8793 && !lun->per_res[residx].registered)) { 8794 ctl_set_reservation_conflict(ctsio); 8795 ctl_done((union ctl_io *)ctsio); 8796 return (CTL_RETVAL_COMPLETE); 8797 } 8798 } 8799 8800 switch (ctsio->cdb[0]) { 8801 case READ_6: 8802 case WRITE_6: { 8803 struct scsi_rw_6 *cdb; 8804 8805 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8806 8807 lba = scsi_3btoul(cdb->addr); 8808 /* only 5 bits are valid in the most significant address byte */ 8809 lba &= 0x1fffff; 8810 num_blocks = cdb->length; 8811 /* 8812 * This is correct according to SBC-2. 8813 */ 8814 if (num_blocks == 0) 8815 num_blocks = 256; 8816 break; 8817 } 8818 case READ_10: 8819 case WRITE_10: { 8820 struct scsi_rw_10 *cdb; 8821 8822 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8823 8824 if (cdb->byte2 & SRW10_FUA) 8825 fua = 1; 8826 if (cdb->byte2 & SRW10_DPO) 8827 dpo = 1; 8828 8829 lba = scsi_4btoul(cdb->addr); 8830 num_blocks = scsi_2btoul(cdb->length); 8831 break; 8832 } 8833 case WRITE_VERIFY_10: { 8834 struct scsi_write_verify_10 *cdb; 8835 8836 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8837 8838 /* 8839 * XXX KDM we should do actual write verify support at some 8840 * point. This is obviously fake, we're just translating 8841 * things to a write. So we don't even bother checking the 8842 * BYTCHK field, since we don't do any verification. If 8843 * the user asks for it, we'll just pretend we did it. 8844 */ 8845 if (cdb->byte2 & SWV_DPO) 8846 dpo = 1; 8847 8848 lba = scsi_4btoul(cdb->addr); 8849 num_blocks = scsi_2btoul(cdb->length); 8850 break; 8851 } 8852 case READ_12: 8853 case WRITE_12: { 8854 struct scsi_rw_12 *cdb; 8855 8856 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8857 8858 if (cdb->byte2 & SRW12_FUA) 8859 fua = 1; 8860 if (cdb->byte2 & SRW12_DPO) 8861 dpo = 1; 8862 lba = scsi_4btoul(cdb->addr); 8863 num_blocks = scsi_4btoul(cdb->length); 8864 break; 8865 } 8866 case WRITE_VERIFY_12: { 8867 struct scsi_write_verify_12 *cdb; 8868 8869 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8870 8871 if (cdb->byte2 & SWV_DPO) 8872 dpo = 1; 8873 8874 lba = scsi_4btoul(cdb->addr); 8875 num_blocks = scsi_4btoul(cdb->length); 8876 8877 break; 8878 } 8879 case READ_16: 8880 case WRITE_16: { 8881 struct scsi_rw_16 *cdb; 8882 8883 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8884 8885 if (cdb->byte2 & SRW12_FUA) 8886 fua = 1; 8887 if (cdb->byte2 & SRW12_DPO) 8888 dpo = 1; 8889 8890 lba = scsi_8btou64(cdb->addr); 8891 num_blocks = scsi_4btoul(cdb->length); 8892 break; 8893 } 8894 case WRITE_VERIFY_16: { 8895 struct scsi_write_verify_16 *cdb; 8896 8897 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8898 8899 if (cdb->byte2 & SWV_DPO) 8900 dpo = 1; 8901 8902 lba = scsi_8btou64(cdb->addr); 8903 num_blocks = scsi_4btoul(cdb->length); 8904 break; 8905 } 8906 default: 8907 /* 8908 * We got a command we don't support. This shouldn't 8909 * happen, commands should be filtered out above us. 8910 */ 8911 ctl_set_invalid_opcode(ctsio); 8912 ctl_done((union ctl_io *)ctsio); 8913 8914 return (CTL_RETVAL_COMPLETE); 8915 break; /* NOTREACHED */ 8916 } 8917 8918 /* 8919 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8920 * interesting for us, but if RAIDCore is in write-back mode, 8921 * getting it to do write-through for a particular transaction may 8922 * not be possible. 8923 */ 8924 8925 /* 8926 * The first check is to make sure we're in bounds, the second 8927 * check is to catch wrap-around problems. If the lba + num blocks 8928 * is less than the lba, then we've wrapped around and the block 8929 * range is invalid anyway. 8930 */ 8931 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8932 || ((lba + num_blocks) < lba)) { 8933 ctl_set_lba_out_of_range(ctsio); 8934 ctl_done((union ctl_io *)ctsio); 8935 return (CTL_RETVAL_COMPLETE); 8936 } 8937 8938 /* 8939 * According to SBC-3, a transfer length of 0 is not an error. 8940 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8941 * translates to 256 blocks for those commands. 8942 */ 8943 if (num_blocks == 0) { 8944 ctl_set_success(ctsio); 8945 ctl_done((union ctl_io *)ctsio); 8946 return (CTL_RETVAL_COMPLETE); 8947 } 8948 8949 lbalen = (struct ctl_lba_len_flags *) 8950 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8951 lbalen->lba = lba; 8952 lbalen->len = num_blocks; 8953 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8954 8955 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8956 ctsio->kern_rel_offset = 0; 8957 8958 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8959 8960 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8961 8962 return (retval); 8963} 8964 8965static int 8966ctl_cnw_cont(union ctl_io *io) 8967{ 8968 struct ctl_scsiio *ctsio; 8969 struct ctl_lun *lun; 8970 struct ctl_lba_len_flags *lbalen; 8971 int retval; 8972 8973 ctsio = &io->scsiio; 8974 ctsio->io_hdr.status = CTL_STATUS_NONE; 8975 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8976 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8977 lbalen = (struct ctl_lba_len_flags *) 8978 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8979 lbalen->flags = CTL_LLF_WRITE; 8980 8981 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8982 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8983 return (retval); 8984} 8985 8986int 8987ctl_cnw(struct ctl_scsiio *ctsio) 8988{ 8989 struct ctl_lun *lun; 8990 struct ctl_lba_len_flags *lbalen; 8991 uint64_t lba; 8992 uint32_t num_blocks; 8993 int fua, dpo; 8994 int retval; 8995 8996 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8997 8998 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8999 9000 fua = 0; 9001 dpo = 0; 9002 9003 retval = CTL_RETVAL_COMPLETE; 9004 9005 switch (ctsio->cdb[0]) { 9006 case COMPARE_AND_WRITE: { 9007 struct scsi_compare_and_write *cdb; 9008 9009 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 9010 9011 if (cdb->byte2 & SRW10_FUA) 9012 fua = 1; 9013 if (cdb->byte2 & SRW10_DPO) 9014 dpo = 1; 9015 lba = scsi_8btou64(cdb->addr); 9016 num_blocks = cdb->length; 9017 break; 9018 } 9019 default: 9020 /* 9021 * We got a command we don't support. This shouldn't 9022 * happen, commands should be filtered out above us. 9023 */ 9024 ctl_set_invalid_opcode(ctsio); 9025 ctl_done((union ctl_io *)ctsio); 9026 9027 return (CTL_RETVAL_COMPLETE); 9028 break; /* NOTREACHED */ 9029 } 9030 9031 /* 9032 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 9033 * interesting for us, but if RAIDCore is in write-back mode, 9034 * getting it to do write-through for a particular transaction may 9035 * not be possible. 9036 */ 9037 9038 /* 9039 * The first check is to make sure we're in bounds, the second 9040 * check is to catch wrap-around problems. If the lba + num blocks 9041 * is less than the lba, then we've wrapped around and the block 9042 * range is invalid anyway. 9043 */ 9044 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9045 || ((lba + num_blocks) < lba)) { 9046 ctl_set_lba_out_of_range(ctsio); 9047 ctl_done((union ctl_io *)ctsio); 9048 return (CTL_RETVAL_COMPLETE); 9049 } 9050 9051 /* 9052 * According to SBC-3, a transfer length of 0 is not an error. 9053 */ 9054 if (num_blocks == 0) { 9055 ctl_set_success(ctsio); 9056 ctl_done((union ctl_io *)ctsio); 9057 return (CTL_RETVAL_COMPLETE); 9058 } 9059 9060 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 9061 ctsio->kern_rel_offset = 0; 9062 9063 /* 9064 * Set the IO_CONT flag, so that if this I/O gets passed to 9065 * ctl_data_submit_done(), it'll get passed back to 9066 * ctl_ctl_cnw_cont() for further processing. 9067 */ 9068 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 9069 ctsio->io_cont = ctl_cnw_cont; 9070 9071 lbalen = (struct ctl_lba_len_flags *) 9072 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9073 lbalen->lba = lba; 9074 lbalen->len = num_blocks; 9075 lbalen->flags = CTL_LLF_COMPARE; 9076 9077 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 9078 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9079 return (retval); 9080} 9081 9082int 9083ctl_verify(struct ctl_scsiio *ctsio) 9084{ 9085 struct ctl_lun *lun; 9086 struct ctl_lba_len_flags *lbalen; 9087 uint64_t lba; 9088 uint32_t num_blocks; 9089 int bytchk, dpo; 9090 int retval; 9091 9092 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9093 9094 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 9095 9096 bytchk = 0; 9097 dpo = 0; 9098 retval = CTL_RETVAL_COMPLETE; 9099 9100 switch (ctsio->cdb[0]) { 9101 case VERIFY_10: { 9102 struct scsi_verify_10 *cdb; 9103 9104 cdb = (struct scsi_verify_10 *)ctsio->cdb; 9105 if (cdb->byte2 & SVFY_BYTCHK) 9106 bytchk = 1; 9107 if (cdb->byte2 & SVFY_DPO) 9108 dpo = 1; 9109 lba = scsi_4btoul(cdb->addr); 9110 num_blocks = scsi_2btoul(cdb->length); 9111 break; 9112 } 9113 case VERIFY_12: { 9114 struct scsi_verify_12 *cdb; 9115 9116 cdb = (struct scsi_verify_12 *)ctsio->cdb; 9117 if (cdb->byte2 & SVFY_BYTCHK) 9118 bytchk = 1; 9119 if (cdb->byte2 & SVFY_DPO) 9120 dpo = 1; 9121 lba = scsi_4btoul(cdb->addr); 9122 num_blocks = scsi_4btoul(cdb->length); 9123 break; 9124 } 9125 case VERIFY_16: { 9126 struct scsi_rw_16 *cdb; 9127 9128 cdb = (struct scsi_rw_16 *)ctsio->cdb; 9129 if (cdb->byte2 & SVFY_BYTCHK) 9130 bytchk = 1; 9131 if (cdb->byte2 & SVFY_DPO) 9132 dpo = 1; 9133 lba = scsi_8btou64(cdb->addr); 9134 num_blocks = scsi_4btoul(cdb->length); 9135 break; 9136 } 9137 default: 9138 /* 9139 * We got a command we don't support. This shouldn't 9140 * happen, commands should be filtered out above us. 9141 */ 9142 ctl_set_invalid_opcode(ctsio); 9143 ctl_done((union ctl_io *)ctsio); 9144 return (CTL_RETVAL_COMPLETE); 9145 } 9146 9147 /* 9148 * The first check is to make sure we're in bounds, the second 9149 * check is to catch wrap-around problems. If the lba + num blocks 9150 * is less than the lba, then we've wrapped around and the block 9151 * range is invalid anyway. 9152 */ 9153 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9154 || ((lba + num_blocks) < lba)) { 9155 ctl_set_lba_out_of_range(ctsio); 9156 ctl_done((union ctl_io *)ctsio); 9157 return (CTL_RETVAL_COMPLETE); 9158 } 9159 9160 /* 9161 * According to SBC-3, a transfer length of 0 is not an error. 9162 */ 9163 if (num_blocks == 0) { 9164 ctl_set_success(ctsio); 9165 ctl_done((union ctl_io *)ctsio); 9166 return (CTL_RETVAL_COMPLETE); 9167 } 9168 9169 lbalen = (struct ctl_lba_len_flags *) 9170 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9171 lbalen->lba = lba; 9172 lbalen->len = num_blocks; 9173 if (bytchk) { 9174 lbalen->flags = CTL_LLF_COMPARE; 9175 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9176 } else { 9177 lbalen->flags = CTL_LLF_VERIFY; 9178 ctsio->kern_total_len = 0; 9179 } 9180 ctsio->kern_rel_offset = 0; 9181 9182 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9183 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9184 return (retval); 9185} 9186 9187int 9188ctl_report_luns(struct ctl_scsiio *ctsio) 9189{ 9190 struct scsi_report_luns *cdb; 9191 struct scsi_report_luns_data *lun_data; 9192 struct ctl_lun *lun, *request_lun; 9193 int num_luns, retval; 9194 uint32_t alloc_len, lun_datalen; 9195 int num_filled, well_known; 9196 uint32_t initidx, targ_lun_id, lun_id; 9197 9198 retval = CTL_RETVAL_COMPLETE; 9199 well_known = 0; 9200 9201 cdb = (struct scsi_report_luns *)ctsio->cdb; 9202 9203 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9204 9205 mtx_lock(&control_softc->ctl_lock); 9206 num_luns = control_softc->num_luns; 9207 mtx_unlock(&control_softc->ctl_lock); 9208 9209 switch (cdb->select_report) { 9210 case RPL_REPORT_DEFAULT: 9211 case RPL_REPORT_ALL: 9212 break; 9213 case RPL_REPORT_WELLKNOWN: 9214 well_known = 1; 9215 num_luns = 0; 9216 break; 9217 default: 9218 ctl_set_invalid_field(ctsio, 9219 /*sks_valid*/ 1, 9220 /*command*/ 1, 9221 /*field*/ 2, 9222 /*bit_valid*/ 0, 9223 /*bit*/ 0); 9224 ctl_done((union ctl_io *)ctsio); 9225 return (retval); 9226 break; /* NOTREACHED */ 9227 } 9228 9229 alloc_len = scsi_4btoul(cdb->length); 9230 /* 9231 * The initiator has to allocate at least 16 bytes for this request, 9232 * so he can at least get the header and the first LUN. Otherwise 9233 * we reject the request (per SPC-3 rev 14, section 6.21). 9234 */ 9235 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9236 sizeof(struct scsi_report_luns_lundata))) { 9237 ctl_set_invalid_field(ctsio, 9238 /*sks_valid*/ 1, 9239 /*command*/ 1, 9240 /*field*/ 6, 9241 /*bit_valid*/ 0, 9242 /*bit*/ 0); 9243 ctl_done((union ctl_io *)ctsio); 9244 return (retval); 9245 } 9246 9247 request_lun = (struct ctl_lun *) 9248 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9249 9250 lun_datalen = sizeof(*lun_data) + 9251 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9252 9253 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9254 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9255 ctsio->kern_sg_entries = 0; 9256 9257 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9258 9259 mtx_lock(&control_softc->ctl_lock); 9260 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9261 lun_id = targ_lun_id; 9262 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9263 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9264 if (lun_id >= CTL_MAX_LUNS) 9265 continue; 9266 lun = control_softc->ctl_luns[lun_id]; 9267 if (lun == NULL) 9268 continue; 9269 9270 if (targ_lun_id <= 0xff) { 9271 /* 9272 * Peripheral addressing method, bus number 0. 9273 */ 9274 lun_data->luns[num_filled].lundata[0] = 9275 RPL_LUNDATA_ATYP_PERIPH; 9276 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9277 num_filled++; 9278 } else if (targ_lun_id <= 0x3fff) { 9279 /* 9280 * Flat addressing method. 9281 */ 9282 lun_data->luns[num_filled].lundata[0] = 9283 RPL_LUNDATA_ATYP_FLAT | 9284 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9285#ifdef OLDCTLHEADERS 9286 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9287 (targ_lun_id & SRLD_BUS_LUN_MASK); 9288#endif 9289 lun_data->luns[num_filled].lundata[1] = 9290#ifdef OLDCTLHEADERS 9291 targ_lun_id >> SRLD_BUS_LUN_BITS; 9292#endif 9293 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9294 num_filled++; 9295 } else { 9296 printf("ctl_report_luns: bogus LUN number %jd, " 9297 "skipping\n", (intmax_t)targ_lun_id); 9298 } 9299 /* 9300 * According to SPC-3, rev 14 section 6.21: 9301 * 9302 * "The execution of a REPORT LUNS command to any valid and 9303 * installed logical unit shall clear the REPORTED LUNS DATA 9304 * HAS CHANGED unit attention condition for all logical 9305 * units of that target with respect to the requesting 9306 * initiator. A valid and installed logical unit is one 9307 * having a PERIPHERAL QUALIFIER of 000b in the standard 9308 * INQUIRY data (see 6.4.2)." 9309 * 9310 * If request_lun is NULL, the LUN this report luns command 9311 * was issued to is either disabled or doesn't exist. In that 9312 * case, we shouldn't clear any pending lun change unit 9313 * attention. 9314 */ 9315 if (request_lun != NULL) { 9316 mtx_lock(&lun->lun_lock); 9317 lun->pending_sense[initidx].ua_pending &= 9318 ~CTL_UA_LUN_CHANGE; 9319 mtx_unlock(&lun->lun_lock); 9320 } 9321 } 9322 mtx_unlock(&control_softc->ctl_lock); 9323 9324 /* 9325 * It's quite possible that we've returned fewer LUNs than we allocated 9326 * space for. Trim it. 9327 */ 9328 lun_datalen = sizeof(*lun_data) + 9329 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9330 9331 if (lun_datalen < alloc_len) { 9332 ctsio->residual = alloc_len - lun_datalen; 9333 ctsio->kern_data_len = lun_datalen; 9334 ctsio->kern_total_len = lun_datalen; 9335 } else { 9336 ctsio->residual = 0; 9337 ctsio->kern_data_len = alloc_len; 9338 ctsio->kern_total_len = alloc_len; 9339 } 9340 ctsio->kern_data_resid = 0; 9341 ctsio->kern_rel_offset = 0; 9342 ctsio->kern_sg_entries = 0; 9343 9344 /* 9345 * We set this to the actual data length, regardless of how much 9346 * space we actually have to return results. If the user looks at 9347 * this value, he'll know whether or not he allocated enough space 9348 * and reissue the command if necessary. We don't support well 9349 * known logical units, so if the user asks for that, return none. 9350 */ 9351 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9352 9353 /* 9354 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9355 * this request. 9356 */ 9357 ctsio->scsi_status = SCSI_STATUS_OK; 9358 9359 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9360 ctsio->be_move_done = ctl_config_move_done; 9361 ctl_datamove((union ctl_io *)ctsio); 9362 9363 return (retval); 9364} 9365 9366int 9367ctl_request_sense(struct ctl_scsiio *ctsio) 9368{ 9369 struct scsi_request_sense *cdb; 9370 struct scsi_sense_data *sense_ptr; 9371 struct ctl_lun *lun; 9372 uint32_t initidx; 9373 int have_error; 9374 scsi_sense_data_type sense_format; 9375 9376 cdb = (struct scsi_request_sense *)ctsio->cdb; 9377 9378 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9379 9380 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9381 9382 /* 9383 * Determine which sense format the user wants. 9384 */ 9385 if (cdb->byte2 & SRS_DESC) 9386 sense_format = SSD_TYPE_DESC; 9387 else 9388 sense_format = SSD_TYPE_FIXED; 9389 9390 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9391 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9392 ctsio->kern_sg_entries = 0; 9393 9394 /* 9395 * struct scsi_sense_data, which is currently set to 256 bytes, is 9396 * larger than the largest allowed value for the length field in the 9397 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9398 */ 9399 ctsio->residual = 0; 9400 ctsio->kern_data_len = cdb->length; 9401 ctsio->kern_total_len = cdb->length; 9402 9403 ctsio->kern_data_resid = 0; 9404 ctsio->kern_rel_offset = 0; 9405 ctsio->kern_sg_entries = 0; 9406 9407 /* 9408 * If we don't have a LUN, we don't have any pending sense. 9409 */ 9410 if (lun == NULL) 9411 goto no_sense; 9412 9413 have_error = 0; 9414 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9415 /* 9416 * Check for pending sense, and then for pending unit attentions. 9417 * Pending sense gets returned first, then pending unit attentions. 9418 */ 9419 mtx_lock(&lun->lun_lock); 9420 if (ctl_is_set(lun->have_ca, initidx)) { 9421 scsi_sense_data_type stored_format; 9422 9423 /* 9424 * Check to see which sense format was used for the stored 9425 * sense data. 9426 */ 9427 stored_format = scsi_sense_type( 9428 &lun->pending_sense[initidx].sense); 9429 9430 /* 9431 * If the user requested a different sense format than the 9432 * one we stored, then we need to convert it to the other 9433 * format. If we're going from descriptor to fixed format 9434 * sense data, we may lose things in translation, depending 9435 * on what options were used. 9436 * 9437 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9438 * for some reason we'll just copy it out as-is. 9439 */ 9440 if ((stored_format == SSD_TYPE_FIXED) 9441 && (sense_format == SSD_TYPE_DESC)) 9442 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9443 &lun->pending_sense[initidx].sense, 9444 (struct scsi_sense_data_desc *)sense_ptr); 9445 else if ((stored_format == SSD_TYPE_DESC) 9446 && (sense_format == SSD_TYPE_FIXED)) 9447 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9448 &lun->pending_sense[initidx].sense, 9449 (struct scsi_sense_data_fixed *)sense_ptr); 9450 else 9451 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9452 ctl_min(sizeof(*sense_ptr), 9453 sizeof(lun->pending_sense[initidx].sense))); 9454 9455 ctl_clear_mask(lun->have_ca, initidx); 9456 have_error = 1; 9457 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9458 ctl_ua_type ua_type; 9459 9460 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9461 sense_ptr, sense_format); 9462 if (ua_type != CTL_UA_NONE) { 9463 have_error = 1; 9464 /* We're reporting this UA, so clear it */ 9465 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9466 } 9467 } 9468 mtx_unlock(&lun->lun_lock); 9469 9470 /* 9471 * We already have a pending error, return it. 9472 */ 9473 if (have_error != 0) { 9474 /* 9475 * We report the SCSI status as OK, since the status of the 9476 * request sense command itself is OK. 9477 */ 9478 ctsio->scsi_status = SCSI_STATUS_OK; 9479 9480 /* 9481 * We report 0 for the sense length, because we aren't doing 9482 * autosense in this case. We're reporting sense as 9483 * parameter data. 9484 */ 9485 ctsio->sense_len = 0; 9486 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9487 ctsio->be_move_done = ctl_config_move_done; 9488 ctl_datamove((union ctl_io *)ctsio); 9489 9490 return (CTL_RETVAL_COMPLETE); 9491 } 9492 9493no_sense: 9494 9495 /* 9496 * No sense information to report, so we report that everything is 9497 * okay. 9498 */ 9499 ctl_set_sense_data(sense_ptr, 9500 lun, 9501 sense_format, 9502 /*current_error*/ 1, 9503 /*sense_key*/ SSD_KEY_NO_SENSE, 9504 /*asc*/ 0x00, 9505 /*ascq*/ 0x00, 9506 SSD_ELEM_NONE); 9507 9508 ctsio->scsi_status = SCSI_STATUS_OK; 9509 9510 /* 9511 * We report 0 for the sense length, because we aren't doing 9512 * autosense in this case. We're reporting sense as parameter data. 9513 */ 9514 ctsio->sense_len = 0; 9515 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9516 ctsio->be_move_done = ctl_config_move_done; 9517 ctl_datamove((union ctl_io *)ctsio); 9518 9519 return (CTL_RETVAL_COMPLETE); 9520} 9521 9522int 9523ctl_tur(struct ctl_scsiio *ctsio) 9524{ 9525 struct ctl_lun *lun; 9526 9527 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9528 9529 CTL_DEBUG_PRINT(("ctl_tur\n")); 9530 9531 if (lun == NULL) 9532 return (EINVAL); 9533 9534 ctsio->scsi_status = SCSI_STATUS_OK; 9535 ctsio->io_hdr.status = CTL_SUCCESS; 9536 9537 ctl_done((union ctl_io *)ctsio); 9538 9539 return (CTL_RETVAL_COMPLETE); 9540} 9541 9542#ifdef notyet 9543static int 9544ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9545{ 9546 9547} 9548#endif 9549 9550static int 9551ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9552{ 9553 struct scsi_vpd_supported_pages *pages; 9554 int sup_page_size; 9555 struct ctl_lun *lun; 9556 9557 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9558 9559 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9560 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9561 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9562 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9563 ctsio->kern_sg_entries = 0; 9564 9565 if (sup_page_size < alloc_len) { 9566 ctsio->residual = alloc_len - sup_page_size; 9567 ctsio->kern_data_len = sup_page_size; 9568 ctsio->kern_total_len = sup_page_size; 9569 } else { 9570 ctsio->residual = 0; 9571 ctsio->kern_data_len = alloc_len; 9572 ctsio->kern_total_len = alloc_len; 9573 } 9574 ctsio->kern_data_resid = 0; 9575 ctsio->kern_rel_offset = 0; 9576 ctsio->kern_sg_entries = 0; 9577 9578 /* 9579 * The control device is always connected. The disk device, on the 9580 * other hand, may not be online all the time. Need to change this 9581 * to figure out whether the disk device is actually online or not. 9582 */ 9583 if (lun != NULL) 9584 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9585 lun->be_lun->lun_type; 9586 else 9587 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9588 9589 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9590 /* Supported VPD pages */ 9591 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9592 /* Serial Number */ 9593 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9594 /* Device Identification */ 9595 pages->page_list[2] = SVPD_DEVICE_ID; 9596 /* Block limits */ 9597 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9598 /* Logical Block Provisioning */ 9599 pages->page_list[4] = SVPD_LBP; 9600 9601 ctsio->scsi_status = SCSI_STATUS_OK; 9602 9603 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9604 ctsio->be_move_done = ctl_config_move_done; 9605 ctl_datamove((union ctl_io *)ctsio); 9606 9607 return (CTL_RETVAL_COMPLETE); 9608} 9609 9610static int 9611ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9612{ 9613 struct scsi_vpd_unit_serial_number *sn_ptr; 9614 struct ctl_lun *lun; 9615 9616 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9617 9618 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9619 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9620 ctsio->kern_sg_entries = 0; 9621 9622 if (sizeof(*sn_ptr) < alloc_len) { 9623 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9624 ctsio->kern_data_len = sizeof(*sn_ptr); 9625 ctsio->kern_total_len = sizeof(*sn_ptr); 9626 } else { 9627 ctsio->residual = 0; 9628 ctsio->kern_data_len = alloc_len; 9629 ctsio->kern_total_len = alloc_len; 9630 } 9631 ctsio->kern_data_resid = 0; 9632 ctsio->kern_rel_offset = 0; 9633 ctsio->kern_sg_entries = 0; 9634 9635 /* 9636 * The control device is always connected. The disk device, on the 9637 * other hand, may not be online all the time. Need to change this 9638 * to figure out whether the disk device is actually online or not. 9639 */ 9640 if (lun != NULL) 9641 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9642 lun->be_lun->lun_type; 9643 else 9644 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9645 9646 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9647 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9648 /* 9649 * If we don't have a LUN, we just leave the serial number as 9650 * all spaces. 9651 */ 9652 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9653 if (lun != NULL) { 9654 strncpy((char *)sn_ptr->serial_num, 9655 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9656 } 9657 ctsio->scsi_status = SCSI_STATUS_OK; 9658 9659 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9660 ctsio->be_move_done = ctl_config_move_done; 9661 ctl_datamove((union ctl_io *)ctsio); 9662 9663 return (CTL_RETVAL_COMPLETE); 9664} 9665 9666 9667static int 9668ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9669{ 9670 struct scsi_vpd_device_id *devid_ptr; 9671 struct scsi_vpd_id_descriptor *desc; 9672 struct ctl_softc *ctl_softc; 9673 struct ctl_lun *lun; 9674 struct ctl_port *port; 9675 int data_len; 9676 uint8_t proto; 9677 9678 ctl_softc = control_softc; 9679 9680 port = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9681 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9682 9683 data_len = sizeof(struct scsi_vpd_device_id) + 9684 sizeof(struct scsi_vpd_id_descriptor) + 9685 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9686 sizeof(struct scsi_vpd_id_descriptor) + 9687 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9688 if (lun && lun->lun_devid) 9689 data_len += lun->lun_devid->len; 9690 if (port->port_devid) 9691 data_len += port->port_devid->len; 9692 if (port->target_devid) 9693 data_len += port->target_devid->len; 9694 9695 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9696 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9697 ctsio->kern_sg_entries = 0; 9698 9699 if (data_len < alloc_len) { 9700 ctsio->residual = alloc_len - data_len; 9701 ctsio->kern_data_len = data_len; 9702 ctsio->kern_total_len = data_len; 9703 } else { 9704 ctsio->residual = 0; 9705 ctsio->kern_data_len = alloc_len; 9706 ctsio->kern_total_len = alloc_len; 9707 } 9708 ctsio->kern_data_resid = 0; 9709 ctsio->kern_rel_offset = 0; 9710 ctsio->kern_sg_entries = 0; 9711 9712 /* 9713 * The control device is always connected. The disk device, on the 9714 * other hand, may not be online all the time. 9715 */ 9716 if (lun != NULL) 9717 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9718 lun->be_lun->lun_type; 9719 else 9720 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9721 devid_ptr->page_code = SVPD_DEVICE_ID; 9722 scsi_ulto2b(data_len - 4, devid_ptr->length); 9723 9724 if (port->port_type == CTL_PORT_FC) 9725 proto = SCSI_PROTO_FC << 4; 9726 else if (port->port_type == CTL_PORT_ISCSI) 9727 proto = SCSI_PROTO_ISCSI << 4; 9728 else 9729 proto = SCSI_PROTO_SPI << 4; 9730 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9731 9732 /* 9733 * We're using a LUN association here. i.e., this device ID is a 9734 * per-LUN identifier. 9735 */ 9736 if (lun && lun->lun_devid) { 9737 memcpy(desc, lun->lun_devid->data, lun->lun_devid->len); 9738 desc = (struct scsi_vpd_id_descriptor *)((uint8_t *)desc + 9739 lun->lun_devid->len); 9740 } 9741 9742 /* 9743 * This is for the WWPN which is a port association. 9744 */ 9745 if (port->port_devid) { 9746 memcpy(desc, port->port_devid->data, port->port_devid->len); 9747 desc = (struct scsi_vpd_id_descriptor *)((uint8_t *)desc + 9748 port->port_devid->len); 9749 } 9750 9751 /* 9752 * This is for the Relative Target Port(type 4h) identifier 9753 */ 9754 desc->proto_codeset = proto | SVPD_ID_CODESET_BINARY; 9755 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 9756 SVPD_ID_TYPE_RELTARG; 9757 desc->length = 4; 9758 scsi_ulto2b(ctsio->io_hdr.nexus.targ_port, &desc->identifier[2]); 9759 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9760 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9761 9762 /* 9763 * This is for the Target Port Group(type 5h) identifier 9764 */ 9765 desc->proto_codeset = proto | SVPD_ID_CODESET_BINARY; 9766 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 9767 SVPD_ID_TYPE_TPORTGRP; 9768 desc->length = 4; 9769 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9770 scsi_ulto2b(1, &desc->identifier[2]); 9771 else 9772 scsi_ulto2b(2, &desc->identifier[2]); 9773 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9774 sizeof(struct scsi_vpd_id_trgt_port_grp_id)); 9775 9776 /* 9777 * This is for the Target identifier 9778 */ 9779 if (port->target_devid) { 9780 memcpy(desc, port->target_devid->data, port->target_devid->len); 9781 } 9782 9783 ctsio->scsi_status = SCSI_STATUS_OK; 9784 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9785 ctsio->be_move_done = ctl_config_move_done; 9786 ctl_datamove((union ctl_io *)ctsio); 9787 9788 return (CTL_RETVAL_COMPLETE); 9789} 9790 9791static int 9792ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9793{ 9794 struct scsi_vpd_block_limits *bl_ptr; 9795 struct ctl_lun *lun; 9796 int bs; 9797 9798 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9799 bs = lun->be_lun->blocksize; 9800 9801 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9802 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9803 ctsio->kern_sg_entries = 0; 9804 9805 if (sizeof(*bl_ptr) < alloc_len) { 9806 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9807 ctsio->kern_data_len = sizeof(*bl_ptr); 9808 ctsio->kern_total_len = sizeof(*bl_ptr); 9809 } else { 9810 ctsio->residual = 0; 9811 ctsio->kern_data_len = alloc_len; 9812 ctsio->kern_total_len = alloc_len; 9813 } 9814 ctsio->kern_data_resid = 0; 9815 ctsio->kern_rel_offset = 0; 9816 ctsio->kern_sg_entries = 0; 9817 9818 /* 9819 * The control device is always connected. The disk device, on the 9820 * other hand, may not be online all the time. Need to change this 9821 * to figure out whether the disk device is actually online or not. 9822 */ 9823 if (lun != NULL) 9824 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9825 lun->be_lun->lun_type; 9826 else 9827 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9828 9829 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9830 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9831 bl_ptr->max_cmp_write_len = 0xff; 9832 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9833 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9834 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9835 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9836 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9837 } 9838 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9839 9840 ctsio->scsi_status = SCSI_STATUS_OK; 9841 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9842 ctsio->be_move_done = ctl_config_move_done; 9843 ctl_datamove((union ctl_io *)ctsio); 9844 9845 return (CTL_RETVAL_COMPLETE); 9846} 9847 9848static int 9849ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9850{ 9851 struct scsi_vpd_logical_block_prov *lbp_ptr; 9852 struct ctl_lun *lun; 9853 int bs; 9854 9855 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9856 bs = lun->be_lun->blocksize; 9857 9858 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9859 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9860 ctsio->kern_sg_entries = 0; 9861 9862 if (sizeof(*lbp_ptr) < alloc_len) { 9863 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9864 ctsio->kern_data_len = sizeof(*lbp_ptr); 9865 ctsio->kern_total_len = sizeof(*lbp_ptr); 9866 } else { 9867 ctsio->residual = 0; 9868 ctsio->kern_data_len = alloc_len; 9869 ctsio->kern_total_len = alloc_len; 9870 } 9871 ctsio->kern_data_resid = 0; 9872 ctsio->kern_rel_offset = 0; 9873 ctsio->kern_sg_entries = 0; 9874 9875 /* 9876 * The control device is always connected. The disk device, on the 9877 * other hand, may not be online all the time. Need to change this 9878 * to figure out whether the disk device is actually online or not. 9879 */ 9880 if (lun != NULL) 9881 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9882 lun->be_lun->lun_type; 9883 else 9884 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9885 9886 lbp_ptr->page_code = SVPD_LBP; 9887 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9888 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9889 9890 ctsio->scsi_status = SCSI_STATUS_OK; 9891 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9892 ctsio->be_move_done = ctl_config_move_done; 9893 ctl_datamove((union ctl_io *)ctsio); 9894 9895 return (CTL_RETVAL_COMPLETE); 9896} 9897 9898static int 9899ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9900{ 9901 struct scsi_inquiry *cdb; 9902 struct ctl_lun *lun; 9903 int alloc_len, retval; 9904 9905 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9906 cdb = (struct scsi_inquiry *)ctsio->cdb; 9907 9908 retval = CTL_RETVAL_COMPLETE; 9909 9910 alloc_len = scsi_2btoul(cdb->length); 9911 9912 switch (cdb->page_code) { 9913 case SVPD_SUPPORTED_PAGES: 9914 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9915 break; 9916 case SVPD_UNIT_SERIAL_NUMBER: 9917 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9918 break; 9919 case SVPD_DEVICE_ID: 9920 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9921 break; 9922 case SVPD_BLOCK_LIMITS: 9923 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9924 break; 9925 case SVPD_LBP: 9926 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9927 break; 9928 default: 9929 ctl_set_invalid_field(ctsio, 9930 /*sks_valid*/ 1, 9931 /*command*/ 1, 9932 /*field*/ 2, 9933 /*bit_valid*/ 0, 9934 /*bit*/ 0); 9935 ctl_done((union ctl_io *)ctsio); 9936 retval = CTL_RETVAL_COMPLETE; 9937 break; 9938 } 9939 9940 return (retval); 9941} 9942 9943static int 9944ctl_inquiry_std(struct ctl_scsiio *ctsio) 9945{ 9946 struct scsi_inquiry_data *inq_ptr; 9947 struct scsi_inquiry *cdb; 9948 struct ctl_softc *ctl_softc; 9949 struct ctl_lun *lun; 9950 char *val; 9951 uint32_t alloc_len; 9952 int is_fc; 9953 9954 ctl_softc = control_softc; 9955 9956 /* 9957 * Figure out whether we're talking to a Fibre Channel port or not. 9958 * We treat the ioctl front end, and any SCSI adapters, as packetized 9959 * SCSI front ends. 9960 */ 9961 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9962 CTL_PORT_FC) 9963 is_fc = 0; 9964 else 9965 is_fc = 1; 9966 9967 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9968 cdb = (struct scsi_inquiry *)ctsio->cdb; 9969 alloc_len = scsi_2btoul(cdb->length); 9970 9971 /* 9972 * We malloc the full inquiry data size here and fill it 9973 * in. If the user only asks for less, we'll give him 9974 * that much. 9975 */ 9976 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9977 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9978 ctsio->kern_sg_entries = 0; 9979 ctsio->kern_data_resid = 0; 9980 ctsio->kern_rel_offset = 0; 9981 9982 if (sizeof(*inq_ptr) < alloc_len) { 9983 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9984 ctsio->kern_data_len = sizeof(*inq_ptr); 9985 ctsio->kern_total_len = sizeof(*inq_ptr); 9986 } else { 9987 ctsio->residual = 0; 9988 ctsio->kern_data_len = alloc_len; 9989 ctsio->kern_total_len = alloc_len; 9990 } 9991 9992 /* 9993 * If we have a LUN configured, report it as connected. Otherwise, 9994 * report that it is offline or no device is supported, depending 9995 * on the value of inquiry_pq_no_lun. 9996 * 9997 * According to the spec (SPC-4 r34), the peripheral qualifier 9998 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9999 * 10000 * "A peripheral device having the specified peripheral device type 10001 * is not connected to this logical unit. However, the device 10002 * server is capable of supporting the specified peripheral device 10003 * type on this logical unit." 10004 * 10005 * According to the same spec, the peripheral qualifier 10006 * SID_QUAL_BAD_LU (011b) is used in this scenario: 10007 * 10008 * "The device server is not capable of supporting a peripheral 10009 * device on this logical unit. For this peripheral qualifier the 10010 * peripheral device type shall be set to 1Fh. All other peripheral 10011 * device type values are reserved for this peripheral qualifier." 10012 * 10013 * Given the text, it would seem that we probably want to report that 10014 * the LUN is offline here. There is no LUN connected, but we can 10015 * support a LUN at the given LUN number. 10016 * 10017 * In the real world, though, it sounds like things are a little 10018 * different: 10019 * 10020 * - Linux, when presented with a LUN with the offline peripheral 10021 * qualifier, will create an sg driver instance for it. So when 10022 * you attach it to CTL, you wind up with a ton of sg driver 10023 * instances. (One for every LUN that Linux bothered to probe.) 10024 * Linux does this despite the fact that it issues a REPORT LUNs 10025 * to LUN 0 to get the inventory of supported LUNs. 10026 * 10027 * - There is other anecdotal evidence (from Emulex folks) about 10028 * arrays that use the offline peripheral qualifier for LUNs that 10029 * are on the "passive" path in an active/passive array. 10030 * 10031 * So the solution is provide a hopefully reasonable default 10032 * (return bad/no LUN) and allow the user to change the behavior 10033 * with a tunable/sysctl variable. 10034 */ 10035 if (lun != NULL) 10036 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 10037 lun->be_lun->lun_type; 10038 else if (ctl_softc->inquiry_pq_no_lun == 0) 10039 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 10040 else 10041 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 10042 10043 /* RMB in byte 2 is 0 */ 10044 inq_ptr->version = SCSI_REV_SPC3; 10045 10046 /* 10047 * According to SAM-3, even if a device only supports a single 10048 * level of LUN addressing, it should still set the HISUP bit: 10049 * 10050 * 4.9.1 Logical unit numbers overview 10051 * 10052 * All logical unit number formats described in this standard are 10053 * hierarchical in structure even when only a single level in that 10054 * hierarchy is used. The HISUP bit shall be set to one in the 10055 * standard INQUIRY data (see SPC-2) when any logical unit number 10056 * format described in this standard is used. Non-hierarchical 10057 * formats are outside the scope of this standard. 10058 * 10059 * Therefore we set the HiSup bit here. 10060 * 10061 * The reponse format is 2, per SPC-3. 10062 */ 10063 inq_ptr->response_format = SID_HiSup | 2; 10064 10065 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 10066 CTL_DEBUG_PRINT(("additional_length = %d\n", 10067 inq_ptr->additional_length)); 10068 10069 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 10070 /* 16 bit addressing */ 10071 if (is_fc == 0) 10072 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 10073 /* XXX set the SID_MultiP bit here if we're actually going to 10074 respond on multiple ports */ 10075 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 10076 10077 /* 16 bit data bus, synchronous transfers */ 10078 /* XXX these flags don't apply for FC */ 10079 if (is_fc == 0) 10080 inq_ptr->flags = SID_WBus16 | SID_Sync; 10081 /* 10082 * XXX KDM do we want to support tagged queueing on the control 10083 * device at all? 10084 */ 10085 if ((lun == NULL) 10086 || (lun->be_lun->lun_type != T_PROCESSOR)) 10087 inq_ptr->flags |= SID_CmdQue; 10088 /* 10089 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10090 * We have 8 bytes for the vendor name, and 16 bytes for the device 10091 * name and 4 bytes for the revision. 10092 */ 10093 if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 10094 "vendor")) == NULL) { 10095 strcpy(inq_ptr->vendor, CTL_VENDOR); 10096 } else { 10097 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10098 strncpy(inq_ptr->vendor, val, 10099 min(sizeof(inq_ptr->vendor), strlen(val))); 10100 } 10101 if (lun == NULL) { 10102 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10103 } else if ((val = ctl_get_opt(&lun->be_lun->options, "product")) == NULL) { 10104 switch (lun->be_lun->lun_type) { 10105 case T_DIRECT: 10106 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10107 break; 10108 case T_PROCESSOR: 10109 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10110 break; 10111 default: 10112 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10113 break; 10114 } 10115 } else { 10116 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10117 strncpy(inq_ptr->product, val, 10118 min(sizeof(inq_ptr->product), strlen(val))); 10119 } 10120 10121 /* 10122 * XXX make this a macro somewhere so it automatically gets 10123 * incremented when we make changes. 10124 */ 10125 if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 10126 "revision")) == NULL) { 10127 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10128 } else { 10129 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10130 strncpy(inq_ptr->revision, val, 10131 min(sizeof(inq_ptr->revision), strlen(val))); 10132 } 10133 10134 /* 10135 * For parallel SCSI, we support double transition and single 10136 * transition clocking. We also support QAS (Quick Arbitration 10137 * and Selection) and Information Unit transfers on both the 10138 * control and array devices. 10139 */ 10140 if (is_fc == 0) 10141 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10142 SID_SPI_IUS; 10143 10144 /* SAM-3 */ 10145 scsi_ulto2b(0x0060, inq_ptr->version1); 10146 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10147 scsi_ulto2b(0x0300, inq_ptr->version2); 10148 if (is_fc) { 10149 /* FCP-2 ANSI INCITS.350:2003 */ 10150 scsi_ulto2b(0x0917, inq_ptr->version3); 10151 } else { 10152 /* SPI-4 ANSI INCITS.362:200x */ 10153 scsi_ulto2b(0x0B56, inq_ptr->version3); 10154 } 10155 10156 if (lun == NULL) { 10157 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10158 scsi_ulto2b(0x0320, inq_ptr->version4); 10159 } else { 10160 switch (lun->be_lun->lun_type) { 10161 case T_DIRECT: 10162 /* 10163 * SBC-2 (no version claimed) XXX should we claim a 10164 * version? 10165 */ 10166 scsi_ulto2b(0x0320, inq_ptr->version4); 10167 break; 10168 case T_PROCESSOR: 10169 default: 10170 break; 10171 } 10172 } 10173 10174 ctsio->scsi_status = SCSI_STATUS_OK; 10175 if (ctsio->kern_data_len > 0) { 10176 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10177 ctsio->be_move_done = ctl_config_move_done; 10178 ctl_datamove((union ctl_io *)ctsio); 10179 } else { 10180 ctsio->io_hdr.status = CTL_SUCCESS; 10181 ctl_done((union ctl_io *)ctsio); 10182 } 10183 10184 return (CTL_RETVAL_COMPLETE); 10185} 10186 10187int 10188ctl_inquiry(struct ctl_scsiio *ctsio) 10189{ 10190 struct scsi_inquiry *cdb; 10191 int retval; 10192 10193 cdb = (struct scsi_inquiry *)ctsio->cdb; 10194 10195 retval = 0; 10196 10197 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10198 10199 /* 10200 * Right now, we don't support the CmdDt inquiry information. 10201 * This would be nice to support in the future. When we do 10202 * support it, we should change this test so that it checks to make 10203 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10204 */ 10205#ifdef notyet 10206 if (((cdb->byte2 & SI_EVPD) 10207 && (cdb->byte2 & SI_CMDDT))) 10208#endif 10209 if (cdb->byte2 & SI_CMDDT) { 10210 /* 10211 * Point to the SI_CMDDT bit. We might change this 10212 * when we support SI_CMDDT, but since both bits would be 10213 * "wrong", this should probably just stay as-is then. 10214 */ 10215 ctl_set_invalid_field(ctsio, 10216 /*sks_valid*/ 1, 10217 /*command*/ 1, 10218 /*field*/ 1, 10219 /*bit_valid*/ 1, 10220 /*bit*/ 1); 10221 ctl_done((union ctl_io *)ctsio); 10222 return (CTL_RETVAL_COMPLETE); 10223 } 10224 if (cdb->byte2 & SI_EVPD) 10225 retval = ctl_inquiry_evpd(ctsio); 10226#ifdef notyet 10227 else if (cdb->byte2 & SI_CMDDT) 10228 retval = ctl_inquiry_cmddt(ctsio); 10229#endif 10230 else 10231 retval = ctl_inquiry_std(ctsio); 10232 10233 return (retval); 10234} 10235 10236/* 10237 * For known CDB types, parse the LBA and length. 10238 */ 10239static int 10240ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10241{ 10242 if (io->io_hdr.io_type != CTL_IO_SCSI) 10243 return (1); 10244 10245 switch (io->scsiio.cdb[0]) { 10246 case COMPARE_AND_WRITE: { 10247 struct scsi_compare_and_write *cdb; 10248 10249 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10250 10251 *lba = scsi_8btou64(cdb->addr); 10252 *len = cdb->length; 10253 break; 10254 } 10255 case READ_6: 10256 case WRITE_6: { 10257 struct scsi_rw_6 *cdb; 10258 10259 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10260 10261 *lba = scsi_3btoul(cdb->addr); 10262 /* only 5 bits are valid in the most significant address byte */ 10263 *lba &= 0x1fffff; 10264 *len = cdb->length; 10265 break; 10266 } 10267 case READ_10: 10268 case WRITE_10: { 10269 struct scsi_rw_10 *cdb; 10270 10271 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10272 10273 *lba = scsi_4btoul(cdb->addr); 10274 *len = scsi_2btoul(cdb->length); 10275 break; 10276 } 10277 case WRITE_VERIFY_10: { 10278 struct scsi_write_verify_10 *cdb; 10279 10280 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10281 10282 *lba = scsi_4btoul(cdb->addr); 10283 *len = scsi_2btoul(cdb->length); 10284 break; 10285 } 10286 case READ_12: 10287 case WRITE_12: { 10288 struct scsi_rw_12 *cdb; 10289 10290 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10291 10292 *lba = scsi_4btoul(cdb->addr); 10293 *len = scsi_4btoul(cdb->length); 10294 break; 10295 } 10296 case WRITE_VERIFY_12: { 10297 struct scsi_write_verify_12 *cdb; 10298 10299 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10300 10301 *lba = scsi_4btoul(cdb->addr); 10302 *len = scsi_4btoul(cdb->length); 10303 break; 10304 } 10305 case READ_16: 10306 case WRITE_16: { 10307 struct scsi_rw_16 *cdb; 10308 10309 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10310 10311 *lba = scsi_8btou64(cdb->addr); 10312 *len = scsi_4btoul(cdb->length); 10313 break; 10314 } 10315 case WRITE_VERIFY_16: { 10316 struct scsi_write_verify_16 *cdb; 10317 10318 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10319 10320 10321 *lba = scsi_8btou64(cdb->addr); 10322 *len = scsi_4btoul(cdb->length); 10323 break; 10324 } 10325 case WRITE_SAME_10: { 10326 struct scsi_write_same_10 *cdb; 10327 10328 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10329 10330 *lba = scsi_4btoul(cdb->addr); 10331 *len = scsi_2btoul(cdb->length); 10332 break; 10333 } 10334 case WRITE_SAME_16: { 10335 struct scsi_write_same_16 *cdb; 10336 10337 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10338 10339 *lba = scsi_8btou64(cdb->addr); 10340 *len = scsi_4btoul(cdb->length); 10341 break; 10342 } 10343 case VERIFY_10: { 10344 struct scsi_verify_10 *cdb; 10345 10346 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10347 10348 *lba = scsi_4btoul(cdb->addr); 10349 *len = scsi_2btoul(cdb->length); 10350 break; 10351 } 10352 case VERIFY_12: { 10353 struct scsi_verify_12 *cdb; 10354 10355 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10356 10357 *lba = scsi_4btoul(cdb->addr); 10358 *len = scsi_4btoul(cdb->length); 10359 break; 10360 } 10361 case VERIFY_16: { 10362 struct scsi_verify_16 *cdb; 10363 10364 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10365 10366 *lba = scsi_8btou64(cdb->addr); 10367 *len = scsi_4btoul(cdb->length); 10368 break; 10369 } 10370 default: 10371 return (1); 10372 break; /* NOTREACHED */ 10373 } 10374 10375 return (0); 10376} 10377 10378static ctl_action 10379ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10380{ 10381 uint64_t endlba1, endlba2; 10382 10383 endlba1 = lba1 + len1 - 1; 10384 endlba2 = lba2 + len2 - 1; 10385 10386 if ((endlba1 < lba2) 10387 || (endlba2 < lba1)) 10388 return (CTL_ACTION_PASS); 10389 else 10390 return (CTL_ACTION_BLOCK); 10391} 10392 10393static ctl_action 10394ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10395{ 10396 uint64_t lba1, lba2; 10397 uint32_t len1, len2; 10398 int retval; 10399 10400 retval = ctl_get_lba_len(io1, &lba1, &len1); 10401 if (retval != 0) 10402 return (CTL_ACTION_ERROR); 10403 10404 retval = ctl_get_lba_len(io2, &lba2, &len2); 10405 if (retval != 0) 10406 return (CTL_ACTION_ERROR); 10407 10408 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10409} 10410 10411static ctl_action 10412ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10413{ 10414 const struct ctl_cmd_entry *pending_entry, *ooa_entry; 10415 ctl_serialize_action *serialize_row; 10416 10417 /* 10418 * The initiator attempted multiple untagged commands at the same 10419 * time. Can't do that. 10420 */ 10421 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10422 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10423 && ((pending_io->io_hdr.nexus.targ_port == 10424 ooa_io->io_hdr.nexus.targ_port) 10425 && (pending_io->io_hdr.nexus.initid.id == 10426 ooa_io->io_hdr.nexus.initid.id)) 10427 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10428 return (CTL_ACTION_OVERLAP); 10429 10430 /* 10431 * The initiator attempted to send multiple tagged commands with 10432 * the same ID. (It's fine if different initiators have the same 10433 * tag ID.) 10434 * 10435 * Even if all of those conditions are true, we don't kill the I/O 10436 * if the command ahead of us has been aborted. We won't end up 10437 * sending it to the FETD, and it's perfectly legal to resend a 10438 * command with the same tag number as long as the previous 10439 * instance of this tag number has been aborted somehow. 10440 */ 10441 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10442 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10443 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10444 && ((pending_io->io_hdr.nexus.targ_port == 10445 ooa_io->io_hdr.nexus.targ_port) 10446 && (pending_io->io_hdr.nexus.initid.id == 10447 ooa_io->io_hdr.nexus.initid.id)) 10448 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10449 return (CTL_ACTION_OVERLAP_TAG); 10450 10451 /* 10452 * If we get a head of queue tag, SAM-3 says that we should 10453 * immediately execute it. 10454 * 10455 * What happens if this command would normally block for some other 10456 * reason? e.g. a request sense with a head of queue tag 10457 * immediately after a write. Normally that would block, but this 10458 * will result in its getting executed immediately... 10459 * 10460 * We currently return "pass" instead of "skip", so we'll end up 10461 * going through the rest of the queue to check for overlapped tags. 10462 * 10463 * XXX KDM check for other types of blockage first?? 10464 */ 10465 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10466 return (CTL_ACTION_PASS); 10467 10468 /* 10469 * Ordered tags have to block until all items ahead of them 10470 * have completed. If we get called with an ordered tag, we always 10471 * block, if something else is ahead of us in the queue. 10472 */ 10473 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10474 return (CTL_ACTION_BLOCK); 10475 10476 /* 10477 * Simple tags get blocked until all head of queue and ordered tags 10478 * ahead of them have completed. I'm lumping untagged commands in 10479 * with simple tags here. XXX KDM is that the right thing to do? 10480 */ 10481 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10482 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10483 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10484 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10485 return (CTL_ACTION_BLOCK); 10486 10487 pending_entry = ctl_get_cmd_entry(&pending_io->scsiio); 10488 ooa_entry = ctl_get_cmd_entry(&ooa_io->scsiio); 10489 10490 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10491 10492 switch (serialize_row[pending_entry->seridx]) { 10493 case CTL_SER_BLOCK: 10494 return (CTL_ACTION_BLOCK); 10495 break; /* NOTREACHED */ 10496 case CTL_SER_EXTENT: 10497 return (ctl_extent_check(pending_io, ooa_io)); 10498 break; /* NOTREACHED */ 10499 case CTL_SER_PASS: 10500 return (CTL_ACTION_PASS); 10501 break; /* NOTREACHED */ 10502 case CTL_SER_SKIP: 10503 return (CTL_ACTION_SKIP); 10504 break; 10505 default: 10506 panic("invalid serialization value %d", 10507 serialize_row[pending_entry->seridx]); 10508 break; /* NOTREACHED */ 10509 } 10510 10511 return (CTL_ACTION_ERROR); 10512} 10513 10514/* 10515 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10516 * Assumptions: 10517 * - pending_io is generally either incoming, or on the blocked queue 10518 * - starting I/O is the I/O we want to start the check with. 10519 */ 10520static ctl_action 10521ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10522 union ctl_io *starting_io) 10523{ 10524 union ctl_io *ooa_io; 10525 ctl_action action; 10526 10527 mtx_assert(&lun->lun_lock, MA_OWNED); 10528 10529 /* 10530 * Run back along the OOA queue, starting with the current 10531 * blocked I/O and going through every I/O before it on the 10532 * queue. If starting_io is NULL, we'll just end up returning 10533 * CTL_ACTION_PASS. 10534 */ 10535 for (ooa_io = starting_io; ooa_io != NULL; 10536 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10537 ooa_links)){ 10538 10539 /* 10540 * This routine just checks to see whether 10541 * cur_blocked is blocked by ooa_io, which is ahead 10542 * of it in the queue. It doesn't queue/dequeue 10543 * cur_blocked. 10544 */ 10545 action = ctl_check_for_blockage(pending_io, ooa_io); 10546 switch (action) { 10547 case CTL_ACTION_BLOCK: 10548 case CTL_ACTION_OVERLAP: 10549 case CTL_ACTION_OVERLAP_TAG: 10550 case CTL_ACTION_SKIP: 10551 case CTL_ACTION_ERROR: 10552 return (action); 10553 break; /* NOTREACHED */ 10554 case CTL_ACTION_PASS: 10555 break; 10556 default: 10557 panic("invalid action %d", action); 10558 break; /* NOTREACHED */ 10559 } 10560 } 10561 10562 return (CTL_ACTION_PASS); 10563} 10564 10565/* 10566 * Assumptions: 10567 * - An I/O has just completed, and has been removed from the per-LUN OOA 10568 * queue, so some items on the blocked queue may now be unblocked. 10569 */ 10570static int 10571ctl_check_blocked(struct ctl_lun *lun) 10572{ 10573 union ctl_io *cur_blocked, *next_blocked; 10574 10575 mtx_assert(&lun->lun_lock, MA_OWNED); 10576 10577 /* 10578 * Run forward from the head of the blocked queue, checking each 10579 * entry against the I/Os prior to it on the OOA queue to see if 10580 * there is still any blockage. 10581 * 10582 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10583 * with our removing a variable on it while it is traversing the 10584 * list. 10585 */ 10586 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10587 cur_blocked != NULL; cur_blocked = next_blocked) { 10588 union ctl_io *prev_ooa; 10589 ctl_action action; 10590 10591 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10592 blocked_links); 10593 10594 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10595 ctl_ooaq, ooa_links); 10596 10597 /* 10598 * If cur_blocked happens to be the first item in the OOA 10599 * queue now, prev_ooa will be NULL, and the action 10600 * returned will just be CTL_ACTION_PASS. 10601 */ 10602 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10603 10604 switch (action) { 10605 case CTL_ACTION_BLOCK: 10606 /* Nothing to do here, still blocked */ 10607 break; 10608 case CTL_ACTION_OVERLAP: 10609 case CTL_ACTION_OVERLAP_TAG: 10610 /* 10611 * This shouldn't happen! In theory we've already 10612 * checked this command for overlap... 10613 */ 10614 break; 10615 case CTL_ACTION_PASS: 10616 case CTL_ACTION_SKIP: { 10617 struct ctl_softc *softc; 10618 const struct ctl_cmd_entry *entry; 10619 uint32_t initidx; 10620 int isc_retval; 10621 10622 /* 10623 * The skip case shouldn't happen, this transaction 10624 * should have never made it onto the blocked queue. 10625 */ 10626 /* 10627 * This I/O is no longer blocked, we can remove it 10628 * from the blocked queue. Since this is a TAILQ 10629 * (doubly linked list), we can do O(1) removals 10630 * from any place on the list. 10631 */ 10632 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10633 blocked_links); 10634 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10635 10636 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10637 /* 10638 * Need to send IO back to original side to 10639 * run 10640 */ 10641 union ctl_ha_msg msg_info; 10642 10643 msg_info.hdr.original_sc = 10644 cur_blocked->io_hdr.original_sc; 10645 msg_info.hdr.serializing_sc = cur_blocked; 10646 msg_info.hdr.msg_type = CTL_MSG_R2R; 10647 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10648 &msg_info, sizeof(msg_info), 0)) > 10649 CTL_HA_STATUS_SUCCESS) { 10650 printf("CTL:Check Blocked error from " 10651 "ctl_ha_msg_send %d\n", 10652 isc_retval); 10653 } 10654 break; 10655 } 10656 entry = ctl_get_cmd_entry(&cur_blocked->scsiio); 10657 softc = control_softc; 10658 10659 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10660 10661 /* 10662 * Check this I/O for LUN state changes that may 10663 * have happened while this command was blocked. 10664 * The LUN state may have been changed by a command 10665 * ahead of us in the queue, so we need to re-check 10666 * for any states that can be caused by SCSI 10667 * commands. 10668 */ 10669 if (ctl_scsiio_lun_check(softc, lun, entry, 10670 &cur_blocked->scsiio) == 0) { 10671 cur_blocked->io_hdr.flags |= 10672 CTL_FLAG_IS_WAS_ON_RTR; 10673 ctl_enqueue_rtr(cur_blocked); 10674 } else 10675 ctl_done(cur_blocked); 10676 break; 10677 } 10678 default: 10679 /* 10680 * This probably shouldn't happen -- we shouldn't 10681 * get CTL_ACTION_ERROR, or anything else. 10682 */ 10683 break; 10684 } 10685 } 10686 10687 return (CTL_RETVAL_COMPLETE); 10688} 10689 10690/* 10691 * This routine (with one exception) checks LUN flags that can be set by 10692 * commands ahead of us in the OOA queue. These flags have to be checked 10693 * when a command initially comes in, and when we pull a command off the 10694 * blocked queue and are preparing to execute it. The reason we have to 10695 * check these flags for commands on the blocked queue is that the LUN 10696 * state may have been changed by a command ahead of us while we're on the 10697 * blocked queue. 10698 * 10699 * Ordering is somewhat important with these checks, so please pay 10700 * careful attention to the placement of any new checks. 10701 */ 10702static int 10703ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10704 const struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10705{ 10706 int retval; 10707 10708 retval = 0; 10709 10710 mtx_assert(&lun->lun_lock, MA_OWNED); 10711 10712 /* 10713 * If this shelf is a secondary shelf controller, we have to reject 10714 * any media access commands. 10715 */ 10716#if 0 10717 /* No longer needed for HA */ 10718 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10719 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10720 ctl_set_lun_standby(ctsio); 10721 retval = 1; 10722 goto bailout; 10723 } 10724#endif 10725 10726 /* 10727 * Check for a reservation conflict. If this command isn't allowed 10728 * even on reserved LUNs, and if this initiator isn't the one who 10729 * reserved us, reject the command with a reservation conflict. 10730 */ 10731 if ((lun->flags & CTL_LUN_RESERVED) 10732 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10733 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10734 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10735 || (ctsio->io_hdr.nexus.targ_target.id != 10736 lun->rsv_nexus.targ_target.id)) { 10737 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10738 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10739 retval = 1; 10740 goto bailout; 10741 } 10742 } 10743 10744 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10745 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10746 uint32_t residx; 10747 10748 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10749 /* 10750 * if we aren't registered or it's a res holder type 10751 * reservation and this isn't the res holder then set a 10752 * conflict. 10753 * NOTE: Commands which might be allowed on write exclusive 10754 * type reservations are checked in the particular command 10755 * for a conflict. Read and SSU are the only ones. 10756 */ 10757 if (!lun->per_res[residx].registered 10758 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10759 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10760 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10761 retval = 1; 10762 goto bailout; 10763 } 10764 10765 } 10766 10767 if ((lun->flags & CTL_LUN_OFFLINE) 10768 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10769 ctl_set_lun_not_ready(ctsio); 10770 retval = 1; 10771 goto bailout; 10772 } 10773 10774 /* 10775 * If the LUN is stopped, see if this particular command is allowed 10776 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10777 */ 10778 if ((lun->flags & CTL_LUN_STOPPED) 10779 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10780 /* "Logical unit not ready, initializing cmd. required" */ 10781 ctl_set_lun_stopped(ctsio); 10782 retval = 1; 10783 goto bailout; 10784 } 10785 10786 if ((lun->flags & CTL_LUN_INOPERABLE) 10787 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10788 /* "Medium format corrupted" */ 10789 ctl_set_medium_format_corrupted(ctsio); 10790 retval = 1; 10791 goto bailout; 10792 } 10793 10794bailout: 10795 return (retval); 10796 10797} 10798 10799static void 10800ctl_failover_io(union ctl_io *io, int have_lock) 10801{ 10802 ctl_set_busy(&io->scsiio); 10803 ctl_done(io); 10804} 10805 10806static void 10807ctl_failover(void) 10808{ 10809 struct ctl_lun *lun; 10810 struct ctl_softc *ctl_softc; 10811 union ctl_io *next_io, *pending_io; 10812 union ctl_io *io; 10813 int lun_idx; 10814 int i; 10815 10816 ctl_softc = control_softc; 10817 10818 mtx_lock(&ctl_softc->ctl_lock); 10819 /* 10820 * Remove any cmds from the other SC from the rtr queue. These 10821 * will obviously only be for LUNs for which we're the primary. 10822 * We can't send status or get/send data for these commands. 10823 * Since they haven't been executed yet, we can just remove them. 10824 * We'll either abort them or delete them below, depending on 10825 * which HA mode we're in. 10826 */ 10827#ifdef notyet 10828 mtx_lock(&ctl_softc->queue_lock); 10829 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10830 io != NULL; io = next_io) { 10831 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10832 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10833 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10834 ctl_io_hdr, links); 10835 } 10836 mtx_unlock(&ctl_softc->queue_lock); 10837#endif 10838 10839 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10840 lun = ctl_softc->ctl_luns[lun_idx]; 10841 if (lun==NULL) 10842 continue; 10843 10844 /* 10845 * Processor LUNs are primary on both sides. 10846 * XXX will this always be true? 10847 */ 10848 if (lun->be_lun->lun_type == T_PROCESSOR) 10849 continue; 10850 10851 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10852 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10853 printf("FAILOVER: primary lun %d\n", lun_idx); 10854 /* 10855 * Remove all commands from the other SC. First from the 10856 * blocked queue then from the ooa queue. Once we have 10857 * removed them. Call ctl_check_blocked to see if there 10858 * is anything that can run. 10859 */ 10860 for (io = (union ctl_io *)TAILQ_FIRST( 10861 &lun->blocked_queue); io != NULL; io = next_io) { 10862 10863 next_io = (union ctl_io *)TAILQ_NEXT( 10864 &io->io_hdr, blocked_links); 10865 10866 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10867 TAILQ_REMOVE(&lun->blocked_queue, 10868 &io->io_hdr,blocked_links); 10869 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10870 TAILQ_REMOVE(&lun->ooa_queue, 10871 &io->io_hdr, ooa_links); 10872 10873 ctl_free_io(io); 10874 } 10875 } 10876 10877 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10878 io != NULL; io = next_io) { 10879 10880 next_io = (union ctl_io *)TAILQ_NEXT( 10881 &io->io_hdr, ooa_links); 10882 10883 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10884 10885 TAILQ_REMOVE(&lun->ooa_queue, 10886 &io->io_hdr, 10887 ooa_links); 10888 10889 ctl_free_io(io); 10890 } 10891 } 10892 ctl_check_blocked(lun); 10893 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10894 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10895 10896 printf("FAILOVER: primary lun %d\n", lun_idx); 10897 /* 10898 * Abort all commands from the other SC. We can't 10899 * send status back for them now. These should get 10900 * cleaned up when they are completed or come out 10901 * for a datamove operation. 10902 */ 10903 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10904 io != NULL; io = next_io) { 10905 next_io = (union ctl_io *)TAILQ_NEXT( 10906 &io->io_hdr, ooa_links); 10907 10908 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10909 io->io_hdr.flags |= CTL_FLAG_ABORT; 10910 } 10911 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10912 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10913 10914 printf("FAILOVER: secondary lun %d\n", lun_idx); 10915 10916 lun->flags |= CTL_LUN_PRIMARY_SC; 10917 10918 /* 10919 * We send all I/O that was sent to this controller 10920 * and redirected to the other side back with 10921 * busy status, and have the initiator retry it. 10922 * Figuring out how much data has been transferred, 10923 * etc. and picking up where we left off would be 10924 * very tricky. 10925 * 10926 * XXX KDM need to remove I/O from the blocked 10927 * queue as well! 10928 */ 10929 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10930 &lun->ooa_queue); pending_io != NULL; 10931 pending_io = next_io) { 10932 10933 next_io = (union ctl_io *)TAILQ_NEXT( 10934 &pending_io->io_hdr, ooa_links); 10935 10936 pending_io->io_hdr.flags &= 10937 ~CTL_FLAG_SENT_2OTHER_SC; 10938 10939 if (pending_io->io_hdr.flags & 10940 CTL_FLAG_IO_ACTIVE) { 10941 pending_io->io_hdr.flags |= 10942 CTL_FLAG_FAILOVER; 10943 } else { 10944 ctl_set_busy(&pending_io->scsiio); 10945 ctl_done(pending_io); 10946 } 10947 } 10948 10949 /* 10950 * Build Unit Attention 10951 */ 10952 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10953 lun->pending_sense[i].ua_pending |= 10954 CTL_UA_ASYM_ACC_CHANGE; 10955 } 10956 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10957 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10958 printf("FAILOVER: secondary lun %d\n", lun_idx); 10959 /* 10960 * if the first io on the OOA is not on the RtR queue 10961 * add it. 10962 */ 10963 lun->flags |= CTL_LUN_PRIMARY_SC; 10964 10965 pending_io = (union ctl_io *)TAILQ_FIRST( 10966 &lun->ooa_queue); 10967 if (pending_io==NULL) { 10968 printf("Nothing on OOA queue\n"); 10969 continue; 10970 } 10971 10972 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10973 if ((pending_io->io_hdr.flags & 10974 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10975 pending_io->io_hdr.flags |= 10976 CTL_FLAG_IS_WAS_ON_RTR; 10977 ctl_enqueue_rtr(pending_io); 10978 } 10979#if 0 10980 else 10981 { 10982 printf("Tag 0x%04x is running\n", 10983 pending_io->scsiio.tag_num); 10984 } 10985#endif 10986 10987 next_io = (union ctl_io *)TAILQ_NEXT( 10988 &pending_io->io_hdr, ooa_links); 10989 for (pending_io=next_io; pending_io != NULL; 10990 pending_io = next_io) { 10991 pending_io->io_hdr.flags &= 10992 ~CTL_FLAG_SENT_2OTHER_SC; 10993 next_io = (union ctl_io *)TAILQ_NEXT( 10994 &pending_io->io_hdr, ooa_links); 10995 if (pending_io->io_hdr.flags & 10996 CTL_FLAG_IS_WAS_ON_RTR) { 10997#if 0 10998 printf("Tag 0x%04x is running\n", 10999 pending_io->scsiio.tag_num); 11000#endif 11001 continue; 11002 } 11003 11004 switch (ctl_check_ooa(lun, pending_io, 11005 (union ctl_io *)TAILQ_PREV( 11006 &pending_io->io_hdr, ctl_ooaq, 11007 ooa_links))) { 11008 11009 case CTL_ACTION_BLOCK: 11010 TAILQ_INSERT_TAIL(&lun->blocked_queue, 11011 &pending_io->io_hdr, 11012 blocked_links); 11013 pending_io->io_hdr.flags |= 11014 CTL_FLAG_BLOCKED; 11015 break; 11016 case CTL_ACTION_PASS: 11017 case CTL_ACTION_SKIP: 11018 pending_io->io_hdr.flags |= 11019 CTL_FLAG_IS_WAS_ON_RTR; 11020 ctl_enqueue_rtr(pending_io); 11021 break; 11022 case CTL_ACTION_OVERLAP: 11023 ctl_set_overlapped_cmd( 11024 (struct ctl_scsiio *)pending_io); 11025 ctl_done(pending_io); 11026 break; 11027 case CTL_ACTION_OVERLAP_TAG: 11028 ctl_set_overlapped_tag( 11029 (struct ctl_scsiio *)pending_io, 11030 pending_io->scsiio.tag_num & 0xff); 11031 ctl_done(pending_io); 11032 break; 11033 case CTL_ACTION_ERROR: 11034 default: 11035 ctl_set_internal_failure( 11036 (struct ctl_scsiio *)pending_io, 11037 0, // sks_valid 11038 0); //retry count 11039 ctl_done(pending_io); 11040 break; 11041 } 11042 } 11043 11044 /* 11045 * Build Unit Attention 11046 */ 11047 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11048 lun->pending_sense[i].ua_pending |= 11049 CTL_UA_ASYM_ACC_CHANGE; 11050 } 11051 } else { 11052 panic("Unhandled HA mode failover, LUN flags = %#x, " 11053 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 11054 } 11055 } 11056 ctl_pause_rtr = 0; 11057 mtx_unlock(&ctl_softc->ctl_lock); 11058} 11059 11060static int 11061ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 11062{ 11063 struct ctl_lun *lun; 11064 const struct ctl_cmd_entry *entry; 11065 uint32_t initidx, targ_lun; 11066 int retval; 11067 11068 retval = 0; 11069 11070 lun = NULL; 11071 11072 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 11073 if ((targ_lun < CTL_MAX_LUNS) 11074 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11075 lun = ctl_softc->ctl_luns[targ_lun]; 11076 /* 11077 * If the LUN is invalid, pretend that it doesn't exist. 11078 * It will go away as soon as all pending I/O has been 11079 * completed. 11080 */ 11081 if (lun->flags & CTL_LUN_DISABLED) { 11082 lun = NULL; 11083 } else { 11084 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11085 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11086 lun->be_lun; 11087 if (lun->be_lun->lun_type == T_PROCESSOR) { 11088 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11089 } 11090 11091 /* 11092 * Every I/O goes into the OOA queue for a 11093 * particular LUN, and stays there until completion. 11094 */ 11095 mtx_lock(&lun->lun_lock); 11096 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, 11097 ooa_links); 11098 } 11099 } else { 11100 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11101 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11102 } 11103 11104 /* Get command entry and return error if it is unsuppotyed. */ 11105 entry = ctl_validate_command(ctsio); 11106 if (entry == NULL) { 11107 if (lun) 11108 mtx_unlock(&lun->lun_lock); 11109 return (retval); 11110 } 11111 11112 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11113 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11114 11115 /* 11116 * Check to see whether we can send this command to LUNs that don't 11117 * exist. This should pretty much only be the case for inquiry 11118 * and request sense. Further checks, below, really require having 11119 * a LUN, so we can't really check the command anymore. Just put 11120 * it on the rtr queue. 11121 */ 11122 if (lun == NULL) { 11123 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) { 11124 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11125 ctl_enqueue_rtr((union ctl_io *)ctsio); 11126 return (retval); 11127 } 11128 11129 ctl_set_unsupported_lun(ctsio); 11130 ctl_done((union ctl_io *)ctsio); 11131 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11132 return (retval); 11133 } else { 11134 /* 11135 * Make sure we support this particular command on this LUN. 11136 * e.g., we don't support writes to the control LUN. 11137 */ 11138 if (!ctl_cmd_applicable(lun->be_lun->lun_type, entry)) { 11139 mtx_unlock(&lun->lun_lock); 11140 ctl_set_invalid_opcode(ctsio); 11141 ctl_done((union ctl_io *)ctsio); 11142 return (retval); 11143 } 11144 } 11145 11146 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11147 11148 /* 11149 * If we've got a request sense, it'll clear the contingent 11150 * allegiance condition. Otherwise, if we have a CA condition for 11151 * this initiator, clear it, because it sent down a command other 11152 * than request sense. 11153 */ 11154 if ((ctsio->cdb[0] != REQUEST_SENSE) 11155 && (ctl_is_set(lun->have_ca, initidx))) 11156 ctl_clear_mask(lun->have_ca, initidx); 11157 11158 /* 11159 * If the command has this flag set, it handles its own unit 11160 * attention reporting, we shouldn't do anything. Otherwise we 11161 * check for any pending unit attentions, and send them back to the 11162 * initiator. We only do this when a command initially comes in, 11163 * not when we pull it off the blocked queue. 11164 * 11165 * According to SAM-3, section 5.3.2, the order that things get 11166 * presented back to the host is basically unit attentions caused 11167 * by some sort of reset event, busy status, reservation conflicts 11168 * or task set full, and finally any other status. 11169 * 11170 * One issue here is that some of the unit attentions we report 11171 * don't fall into the "reset" category (e.g. "reported luns data 11172 * has changed"). So reporting it here, before the reservation 11173 * check, may be technically wrong. I guess the only thing to do 11174 * would be to check for and report the reset events here, and then 11175 * check for the other unit attention types after we check for a 11176 * reservation conflict. 11177 * 11178 * XXX KDM need to fix this 11179 */ 11180 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11181 ctl_ua_type ua_type; 11182 11183 ua_type = lun->pending_sense[initidx].ua_pending; 11184 if (ua_type != CTL_UA_NONE) { 11185 scsi_sense_data_type sense_format; 11186 11187 if (lun != NULL) 11188 sense_format = (lun->flags & 11189 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11190 SSD_TYPE_FIXED; 11191 else 11192 sense_format = SSD_TYPE_FIXED; 11193 11194 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11195 sense_format); 11196 if (ua_type != CTL_UA_NONE) { 11197 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11198 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11199 CTL_AUTOSENSE; 11200 ctsio->sense_len = SSD_FULL_SIZE; 11201 lun->pending_sense[initidx].ua_pending &= 11202 ~ua_type; 11203 mtx_unlock(&lun->lun_lock); 11204 ctl_done((union ctl_io *)ctsio); 11205 return (retval); 11206 } 11207 } 11208 } 11209 11210 11211 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11212 mtx_unlock(&lun->lun_lock); 11213 ctl_done((union ctl_io *)ctsio); 11214 return (retval); 11215 } 11216 11217 /* 11218 * XXX CHD this is where we want to send IO to other side if 11219 * this LUN is secondary on this SC. We will need to make a copy 11220 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11221 * the copy we send as FROM_OTHER. 11222 * We also need to stuff the address of the original IO so we can 11223 * find it easily. Something similar will need be done on the other 11224 * side so when we are done we can find the copy. 11225 */ 11226 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11227 union ctl_ha_msg msg_info; 11228 int isc_retval; 11229 11230 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11231 11232 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11233 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11234#if 0 11235 printf("1. ctsio %p\n", ctsio); 11236#endif 11237 msg_info.hdr.serializing_sc = NULL; 11238 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11239 msg_info.scsi.tag_num = ctsio->tag_num; 11240 msg_info.scsi.tag_type = ctsio->tag_type; 11241 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11242 11243 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11244 11245 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11246 (void *)&msg_info, sizeof(msg_info), 0)) > 11247 CTL_HA_STATUS_SUCCESS) { 11248 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11249 isc_retval); 11250 printf("CTL:opcode is %x\n", ctsio->cdb[0]); 11251 } else { 11252#if 0 11253 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11254#endif 11255 } 11256 11257 /* 11258 * XXX KDM this I/O is off the incoming queue, but hasn't 11259 * been inserted on any other queue. We may need to come 11260 * up with a holding queue while we wait for serialization 11261 * so that we have an idea of what we're waiting for from 11262 * the other side. 11263 */ 11264 mtx_unlock(&lun->lun_lock); 11265 return (retval); 11266 } 11267 11268 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11269 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11270 ctl_ooaq, ooa_links))) { 11271 case CTL_ACTION_BLOCK: 11272 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11273 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11274 blocked_links); 11275 mtx_unlock(&lun->lun_lock); 11276 return (retval); 11277 case CTL_ACTION_PASS: 11278 case CTL_ACTION_SKIP: 11279 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11280 mtx_unlock(&lun->lun_lock); 11281 ctl_enqueue_rtr((union ctl_io *)ctsio); 11282 break; 11283 case CTL_ACTION_OVERLAP: 11284 mtx_unlock(&lun->lun_lock); 11285 ctl_set_overlapped_cmd(ctsio); 11286 ctl_done((union ctl_io *)ctsio); 11287 break; 11288 case CTL_ACTION_OVERLAP_TAG: 11289 mtx_unlock(&lun->lun_lock); 11290 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11291 ctl_done((union ctl_io *)ctsio); 11292 break; 11293 case CTL_ACTION_ERROR: 11294 default: 11295 mtx_unlock(&lun->lun_lock); 11296 ctl_set_internal_failure(ctsio, 11297 /*sks_valid*/ 0, 11298 /*retry_count*/ 0); 11299 ctl_done((union ctl_io *)ctsio); 11300 break; 11301 } 11302 return (retval); 11303} 11304 11305const struct ctl_cmd_entry * 11306ctl_get_cmd_entry(struct ctl_scsiio *ctsio) 11307{ 11308 const struct ctl_cmd_entry *entry; 11309 int service_action; 11310 11311 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11312 if (entry->flags & CTL_CMD_FLAG_SA5) { 11313 service_action = ctsio->cdb[1] & SERVICE_ACTION_MASK; 11314 entry = &((const struct ctl_cmd_entry *) 11315 entry->execute)[service_action]; 11316 } 11317 return (entry); 11318} 11319 11320const struct ctl_cmd_entry * 11321ctl_validate_command(struct ctl_scsiio *ctsio) 11322{ 11323 const struct ctl_cmd_entry *entry; 11324 int i; 11325 uint8_t diff; 11326 11327 entry = ctl_get_cmd_entry(ctsio); 11328 if (entry->execute == NULL) { 11329 ctl_set_invalid_opcode(ctsio); 11330 ctl_done((union ctl_io *)ctsio); 11331 return (NULL); 11332 } 11333 KASSERT(entry->length > 0, 11334 ("Not defined length for command 0x%02x/0x%02x", 11335 ctsio->cdb[0], ctsio->cdb[1])); 11336 for (i = 1; i < entry->length; i++) { 11337 diff = ctsio->cdb[i] & ~entry->usage[i - 1]; 11338 if (diff == 0) 11339 continue; 11340 ctl_set_invalid_field(ctsio, 11341 /*sks_valid*/ 1, 11342 /*command*/ 1, 11343 /*field*/ i, 11344 /*bit_valid*/ 1, 11345 /*bit*/ fls(diff) - 1); 11346 ctl_done((union ctl_io *)ctsio); 11347 return (NULL); 11348 } 11349 return (entry); 11350} 11351 11352static int 11353ctl_cmd_applicable(uint8_t lun_type, const struct ctl_cmd_entry *entry) 11354{ 11355 11356 switch (lun_type) { 11357 case T_PROCESSOR: 11358 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) && 11359 ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) == 0)) 11360 return (0); 11361 break; 11362 case T_DIRECT: 11363 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) && 11364 ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) == 0)) 11365 return (0); 11366 break; 11367 default: 11368 return (0); 11369 } 11370 return (1); 11371} 11372 11373static int 11374ctl_scsiio(struct ctl_scsiio *ctsio) 11375{ 11376 int retval; 11377 const struct ctl_cmd_entry *entry; 11378 11379 retval = CTL_RETVAL_COMPLETE; 11380 11381 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11382 11383 entry = ctl_get_cmd_entry(ctsio); 11384 11385 /* 11386 * If this I/O has been aborted, just send it straight to 11387 * ctl_done() without executing it. 11388 */ 11389 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11390 ctl_done((union ctl_io *)ctsio); 11391 goto bailout; 11392 } 11393 11394 /* 11395 * All the checks should have been handled by ctl_scsiio_precheck(). 11396 * We should be clear now to just execute the I/O. 11397 */ 11398 retval = entry->execute(ctsio); 11399 11400bailout: 11401 return (retval); 11402} 11403 11404/* 11405 * Since we only implement one target right now, a bus reset simply resets 11406 * our single target. 11407 */ 11408static int 11409ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11410{ 11411 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11412} 11413 11414static int 11415ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11416 ctl_ua_type ua_type) 11417{ 11418 struct ctl_lun *lun; 11419 int retval; 11420 11421 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11422 union ctl_ha_msg msg_info; 11423 11424 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11425 msg_info.hdr.nexus = io->io_hdr.nexus; 11426 if (ua_type==CTL_UA_TARG_RESET) 11427 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11428 else 11429 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11430 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11431 msg_info.hdr.original_sc = NULL; 11432 msg_info.hdr.serializing_sc = NULL; 11433 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11434 (void *)&msg_info, sizeof(msg_info), 0)) { 11435 } 11436 } 11437 retval = 0; 11438 11439 mtx_lock(&ctl_softc->ctl_lock); 11440 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11441 retval += ctl_lun_reset(lun, io, ua_type); 11442 mtx_unlock(&ctl_softc->ctl_lock); 11443 11444 return (retval); 11445} 11446 11447/* 11448 * The LUN should always be set. The I/O is optional, and is used to 11449 * distinguish between I/Os sent by this initiator, and by other 11450 * initiators. We set unit attention for initiators other than this one. 11451 * SAM-3 is vague on this point. It does say that a unit attention should 11452 * be established for other initiators when a LUN is reset (see section 11453 * 5.7.3), but it doesn't specifically say that the unit attention should 11454 * be established for this particular initiator when a LUN is reset. Here 11455 * is the relevant text, from SAM-3 rev 8: 11456 * 11457 * 5.7.2 When a SCSI initiator port aborts its own tasks 11458 * 11459 * When a SCSI initiator port causes its own task(s) to be aborted, no 11460 * notification that the task(s) have been aborted shall be returned to 11461 * the SCSI initiator port other than the completion response for the 11462 * command or task management function action that caused the task(s) to 11463 * be aborted and notification(s) associated with related effects of the 11464 * action (e.g., a reset unit attention condition). 11465 * 11466 * XXX KDM for now, we're setting unit attention for all initiators. 11467 */ 11468static int 11469ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11470{ 11471 union ctl_io *xio; 11472#if 0 11473 uint32_t initindex; 11474#endif 11475 int i; 11476 11477 mtx_lock(&lun->lun_lock); 11478 /* 11479 * Run through the OOA queue and abort each I/O. 11480 */ 11481#if 0 11482 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11483#endif 11484 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11485 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11486 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11487 } 11488 11489 /* 11490 * This version sets unit attention for every 11491 */ 11492#if 0 11493 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11494 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11495 if (initindex == i) 11496 continue; 11497 lun->pending_sense[i].ua_pending |= ua_type; 11498 } 11499#endif 11500 11501 /* 11502 * A reset (any kind, really) clears reservations established with 11503 * RESERVE/RELEASE. It does not clear reservations established 11504 * with PERSISTENT RESERVE OUT, but we don't support that at the 11505 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11506 * reservations made with the RESERVE/RELEASE commands, because 11507 * those commands are obsolete in SPC-3. 11508 */ 11509 lun->flags &= ~CTL_LUN_RESERVED; 11510 11511 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11512 ctl_clear_mask(lun->have_ca, i); 11513 lun->pending_sense[i].ua_pending |= ua_type; 11514 } 11515 mtx_unlock(&lun->lun_lock); 11516 11517 return (0); 11518} 11519 11520static int 11521ctl_abort_task(union ctl_io *io) 11522{ 11523 union ctl_io *xio; 11524 struct ctl_lun *lun; 11525 struct ctl_softc *ctl_softc; 11526#if 0 11527 struct sbuf sb; 11528 char printbuf[128]; 11529#endif 11530 int found; 11531 uint32_t targ_lun; 11532 11533 ctl_softc = control_softc; 11534 found = 0; 11535 11536 /* 11537 * Look up the LUN. 11538 */ 11539 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11540 mtx_lock(&ctl_softc->ctl_lock); 11541 if ((targ_lun < CTL_MAX_LUNS) 11542 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11543 lun = ctl_softc->ctl_luns[targ_lun]; 11544 else { 11545 mtx_unlock(&ctl_softc->ctl_lock); 11546 goto bailout; 11547 } 11548 11549#if 0 11550 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11551 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11552#endif 11553 11554 mtx_lock(&lun->lun_lock); 11555 mtx_unlock(&ctl_softc->ctl_lock); 11556 /* 11557 * Run through the OOA queue and attempt to find the given I/O. 11558 * The target port, initiator ID, tag type and tag number have to 11559 * match the values that we got from the initiator. If we have an 11560 * untagged command to abort, simply abort the first untagged command 11561 * we come to. We only allow one untagged command at a time of course. 11562 */ 11563#if 0 11564 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11565#endif 11566 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11567 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11568#if 0 11569 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11570 11571 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11572 lun->lun, xio->scsiio.tag_num, 11573 xio->scsiio.tag_type, 11574 (xio->io_hdr.blocked_links.tqe_prev 11575 == NULL) ? "" : " BLOCKED", 11576 (xio->io_hdr.flags & 11577 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11578 (xio->io_hdr.flags & 11579 CTL_FLAG_ABORT) ? " ABORT" : "", 11580 (xio->io_hdr.flags & 11581 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11582 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11583 sbuf_finish(&sb); 11584 printf("%s\n", sbuf_data(&sb)); 11585#endif 11586 11587 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11588 && (xio->io_hdr.nexus.initid.id == 11589 io->io_hdr.nexus.initid.id)) { 11590 /* 11591 * If the abort says that the task is untagged, the 11592 * task in the queue must be untagged. Otherwise, 11593 * we just check to see whether the tag numbers 11594 * match. This is because the QLogic firmware 11595 * doesn't pass back the tag type in an abort 11596 * request. 11597 */ 11598#if 0 11599 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11600 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11601 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11602#endif 11603 /* 11604 * XXX KDM we've got problems with FC, because it 11605 * doesn't send down a tag type with aborts. So we 11606 * can only really go by the tag number... 11607 * This may cause problems with parallel SCSI. 11608 * Need to figure that out!! 11609 */ 11610 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11611 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11612 found = 1; 11613 if ((io->io_hdr.flags & 11614 CTL_FLAG_FROM_OTHER_SC) == 0 && 11615 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11616 union ctl_ha_msg msg_info; 11617 11618 io->io_hdr.flags |= 11619 CTL_FLAG_SENT_2OTHER_SC; 11620 msg_info.hdr.nexus = io->io_hdr.nexus; 11621 msg_info.task.task_action = 11622 CTL_TASK_ABORT_TASK; 11623 msg_info.task.tag_num = 11624 io->taskio.tag_num; 11625 msg_info.task.tag_type = 11626 io->taskio.tag_type; 11627 msg_info.hdr.msg_type = 11628 CTL_MSG_MANAGE_TASKS; 11629 msg_info.hdr.original_sc = NULL; 11630 msg_info.hdr.serializing_sc = NULL; 11631#if 0 11632 printf("Sent Abort to other side\n"); 11633#endif 11634 if (CTL_HA_STATUS_SUCCESS != 11635 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11636 (void *)&msg_info, 11637 sizeof(msg_info), 0)) { 11638 } 11639 } 11640#if 0 11641 printf("ctl_abort_task: found I/O to abort\n"); 11642#endif 11643 break; 11644 } 11645 } 11646 } 11647 mtx_unlock(&lun->lun_lock); 11648 11649bailout: 11650 11651 if (found == 0) { 11652 /* 11653 * This isn't really an error. It's entirely possible for 11654 * the abort and command completion to cross on the wire. 11655 * This is more of an informative/diagnostic error. 11656 */ 11657#if 0 11658 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11659 "%d:%d:%d:%d tag %d type %d\n", 11660 io->io_hdr.nexus.initid.id, 11661 io->io_hdr.nexus.targ_port, 11662 io->io_hdr.nexus.targ_target.id, 11663 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11664 io->taskio.tag_type); 11665#endif 11666 return (1); 11667 } else 11668 return (0); 11669} 11670 11671static void 11672ctl_run_task(union ctl_io *io) 11673{ 11674 struct ctl_softc *ctl_softc; 11675 int retval; 11676 const char *task_desc; 11677 11678 CTL_DEBUG_PRINT(("ctl_run_task\n")); 11679 11680 ctl_softc = control_softc; 11681 retval = 0; 11682 11683 KASSERT(io->io_hdr.io_type == CTL_IO_TASK, 11684 ("ctl_run_task: Unextected io_type %d\n", 11685 io->io_hdr.io_type)); 11686 11687 task_desc = ctl_scsi_task_string(&io->taskio); 11688 if (task_desc != NULL) { 11689#ifdef NEEDTOPORT 11690 csevent_log(CSC_CTL | CSC_SHELF_SW | 11691 CTL_TASK_REPORT, 11692 csevent_LogType_Trace, 11693 csevent_Severity_Information, 11694 csevent_AlertLevel_Green, 11695 csevent_FRU_Firmware, 11696 csevent_FRU_Unknown, 11697 "CTL: received task: %s",task_desc); 11698#endif 11699 } else { 11700#ifdef NEEDTOPORT 11701 csevent_log(CSC_CTL | CSC_SHELF_SW | 11702 CTL_TASK_REPORT, 11703 csevent_LogType_Trace, 11704 csevent_Severity_Information, 11705 csevent_AlertLevel_Green, 11706 csevent_FRU_Firmware, 11707 csevent_FRU_Unknown, 11708 "CTL: received unknown task " 11709 "type: %d (%#x)", 11710 io->taskio.task_action, 11711 io->taskio.task_action); 11712#endif 11713 } 11714 switch (io->taskio.task_action) { 11715 case CTL_TASK_ABORT_TASK: 11716 retval = ctl_abort_task(io); 11717 break; 11718 case CTL_TASK_ABORT_TASK_SET: 11719 break; 11720 case CTL_TASK_CLEAR_ACA: 11721 break; 11722 case CTL_TASK_CLEAR_TASK_SET: 11723 break; 11724 case CTL_TASK_LUN_RESET: { 11725 struct ctl_lun *lun; 11726 uint32_t targ_lun; 11727 int retval; 11728 11729 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11730 mtx_lock(&ctl_softc->ctl_lock); 11731 if ((targ_lun < CTL_MAX_LUNS) 11732 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11733 lun = ctl_softc->ctl_luns[targ_lun]; 11734 else { 11735 mtx_unlock(&ctl_softc->ctl_lock); 11736 retval = 1; 11737 break; 11738 } 11739 11740 if (!(io->io_hdr.flags & 11741 CTL_FLAG_FROM_OTHER_SC)) { 11742 union ctl_ha_msg msg_info; 11743 11744 io->io_hdr.flags |= 11745 CTL_FLAG_SENT_2OTHER_SC; 11746 msg_info.hdr.msg_type = 11747 CTL_MSG_MANAGE_TASKS; 11748 msg_info.hdr.nexus = io->io_hdr.nexus; 11749 msg_info.task.task_action = 11750 CTL_TASK_LUN_RESET; 11751 msg_info.hdr.original_sc = NULL; 11752 msg_info.hdr.serializing_sc = NULL; 11753 if (CTL_HA_STATUS_SUCCESS != 11754 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11755 (void *)&msg_info, 11756 sizeof(msg_info), 0)) { 11757 } 11758 } 11759 11760 retval = ctl_lun_reset(lun, io, 11761 CTL_UA_LUN_RESET); 11762 mtx_unlock(&ctl_softc->ctl_lock); 11763 break; 11764 } 11765 case CTL_TASK_TARGET_RESET: 11766 retval = ctl_target_reset(ctl_softc, io, CTL_UA_TARG_RESET); 11767 break; 11768 case CTL_TASK_BUS_RESET: 11769 retval = ctl_bus_reset(ctl_softc, io); 11770 break; 11771 case CTL_TASK_PORT_LOGIN: 11772 break; 11773 case CTL_TASK_PORT_LOGOUT: 11774 break; 11775 default: 11776 printf("ctl_run_task: got unknown task management event %d\n", 11777 io->taskio.task_action); 11778 break; 11779 } 11780 if (retval == 0) 11781 io->io_hdr.status = CTL_SUCCESS; 11782 else 11783 io->io_hdr.status = CTL_ERROR; 11784 11785 /* 11786 * This will queue this I/O to the done queue, but the 11787 * work thread won't be able to process it until we 11788 * return and the lock is released. 11789 */ 11790 ctl_done(io); 11791} 11792 11793/* 11794 * For HA operation. Handle commands that come in from the other 11795 * controller. 11796 */ 11797static void 11798ctl_handle_isc(union ctl_io *io) 11799{ 11800 int free_io; 11801 struct ctl_lun *lun; 11802 struct ctl_softc *ctl_softc; 11803 uint32_t targ_lun; 11804 11805 ctl_softc = control_softc; 11806 11807 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11808 lun = ctl_softc->ctl_luns[targ_lun]; 11809 11810 switch (io->io_hdr.msg_type) { 11811 case CTL_MSG_SERIALIZE: 11812 free_io = ctl_serialize_other_sc_cmd(&io->scsiio); 11813 break; 11814 case CTL_MSG_R2R: { 11815 const struct ctl_cmd_entry *entry; 11816 11817 /* 11818 * This is only used in SER_ONLY mode. 11819 */ 11820 free_io = 0; 11821 entry = ctl_get_cmd_entry(&io->scsiio); 11822 mtx_lock(&lun->lun_lock); 11823 if (ctl_scsiio_lun_check(ctl_softc, lun, 11824 entry, (struct ctl_scsiio *)io) != 0) { 11825 mtx_unlock(&lun->lun_lock); 11826 ctl_done(io); 11827 break; 11828 } 11829 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11830 mtx_unlock(&lun->lun_lock); 11831 ctl_enqueue_rtr(io); 11832 break; 11833 } 11834 case CTL_MSG_FINISH_IO: 11835 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11836 free_io = 0; 11837 ctl_done(io); 11838 } else { 11839 free_io = 1; 11840 mtx_lock(&lun->lun_lock); 11841 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11842 ooa_links); 11843 ctl_check_blocked(lun); 11844 mtx_unlock(&lun->lun_lock); 11845 } 11846 break; 11847 case CTL_MSG_PERS_ACTION: 11848 ctl_hndl_per_res_out_on_other_sc( 11849 (union ctl_ha_msg *)&io->presio.pr_msg); 11850 free_io = 1; 11851 break; 11852 case CTL_MSG_BAD_JUJU: 11853 free_io = 0; 11854 ctl_done(io); 11855 break; 11856 case CTL_MSG_DATAMOVE: 11857 /* Only used in XFER mode */ 11858 free_io = 0; 11859 ctl_datamove_remote(io); 11860 break; 11861 case CTL_MSG_DATAMOVE_DONE: 11862 /* Only used in XFER mode */ 11863 free_io = 0; 11864 io->scsiio.be_move_done(io); 11865 break; 11866 default: 11867 free_io = 1; 11868 printf("%s: Invalid message type %d\n", 11869 __func__, io->io_hdr.msg_type); 11870 break; 11871 } 11872 if (free_io) 11873 ctl_free_io(io); 11874 11875} 11876 11877 11878/* 11879 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11880 * there is no match. 11881 */ 11882static ctl_lun_error_pattern 11883ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11884{ 11885 const struct ctl_cmd_entry *entry; 11886 ctl_lun_error_pattern filtered_pattern, pattern; 11887 11888 pattern = desc->error_pattern; 11889 11890 /* 11891 * XXX KDM we need more data passed into this function to match a 11892 * custom pattern, and we actually need to implement custom pattern 11893 * matching. 11894 */ 11895 if (pattern & CTL_LUN_PAT_CMD) 11896 return (CTL_LUN_PAT_CMD); 11897 11898 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11899 return (CTL_LUN_PAT_ANY); 11900 11901 entry = ctl_get_cmd_entry(ctsio); 11902 11903 filtered_pattern = entry->pattern & pattern; 11904 11905 /* 11906 * If the user requested specific flags in the pattern (e.g. 11907 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11908 * flags. 11909 * 11910 * If the user did not specify any flags, it doesn't matter whether 11911 * or not the command supports the flags. 11912 */ 11913 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11914 (pattern & ~CTL_LUN_PAT_MASK)) 11915 return (CTL_LUN_PAT_NONE); 11916 11917 /* 11918 * If the user asked for a range check, see if the requested LBA 11919 * range overlaps with this command's LBA range. 11920 */ 11921 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11922 uint64_t lba1; 11923 uint32_t len1; 11924 ctl_action action; 11925 int retval; 11926 11927 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11928 if (retval != 0) 11929 return (CTL_LUN_PAT_NONE); 11930 11931 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11932 desc->lba_range.len); 11933 /* 11934 * A "pass" means that the LBA ranges don't overlap, so 11935 * this doesn't match the user's range criteria. 11936 */ 11937 if (action == CTL_ACTION_PASS) 11938 return (CTL_LUN_PAT_NONE); 11939 } 11940 11941 return (filtered_pattern); 11942} 11943 11944static void 11945ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11946{ 11947 struct ctl_error_desc *desc, *desc2; 11948 11949 mtx_assert(&lun->lun_lock, MA_OWNED); 11950 11951 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11952 ctl_lun_error_pattern pattern; 11953 /* 11954 * Check to see whether this particular command matches 11955 * the pattern in the descriptor. 11956 */ 11957 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11958 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11959 continue; 11960 11961 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11962 case CTL_LUN_INJ_ABORTED: 11963 ctl_set_aborted(&io->scsiio); 11964 break; 11965 case CTL_LUN_INJ_MEDIUM_ERR: 11966 ctl_set_medium_error(&io->scsiio); 11967 break; 11968 case CTL_LUN_INJ_UA: 11969 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11970 * OCCURRED */ 11971 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11972 break; 11973 case CTL_LUN_INJ_CUSTOM: 11974 /* 11975 * We're assuming the user knows what he is doing. 11976 * Just copy the sense information without doing 11977 * checks. 11978 */ 11979 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11980 ctl_min(sizeof(desc->custom_sense), 11981 sizeof(io->scsiio.sense_data))); 11982 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11983 io->scsiio.sense_len = SSD_FULL_SIZE; 11984 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11985 break; 11986 case CTL_LUN_INJ_NONE: 11987 default: 11988 /* 11989 * If this is an error injection type we don't know 11990 * about, clear the continuous flag (if it is set) 11991 * so it will get deleted below. 11992 */ 11993 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11994 break; 11995 } 11996 /* 11997 * By default, each error injection action is a one-shot 11998 */ 11999 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 12000 continue; 12001 12002 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 12003 12004 free(desc, M_CTL); 12005 } 12006} 12007 12008#ifdef CTL_IO_DELAY 12009static void 12010ctl_datamove_timer_wakeup(void *arg) 12011{ 12012 union ctl_io *io; 12013 12014 io = (union ctl_io *)arg; 12015 12016 ctl_datamove(io); 12017} 12018#endif /* CTL_IO_DELAY */ 12019 12020void 12021ctl_datamove(union ctl_io *io) 12022{ 12023 void (*fe_datamove)(union ctl_io *io); 12024 12025 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 12026 12027 CTL_DEBUG_PRINT(("ctl_datamove\n")); 12028 12029#ifdef CTL_TIME_IO 12030 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12031 char str[256]; 12032 char path_str[64]; 12033 struct sbuf sb; 12034 12035 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12036 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12037 12038 sbuf_cat(&sb, path_str); 12039 switch (io->io_hdr.io_type) { 12040 case CTL_IO_SCSI: 12041 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12042 sbuf_printf(&sb, "\n"); 12043 sbuf_cat(&sb, path_str); 12044 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12045 io->scsiio.tag_num, io->scsiio.tag_type); 12046 break; 12047 case CTL_IO_TASK: 12048 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12049 "Tag Type: %d\n", io->taskio.task_action, 12050 io->taskio.tag_num, io->taskio.tag_type); 12051 break; 12052 default: 12053 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12054 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12055 break; 12056 } 12057 sbuf_cat(&sb, path_str); 12058 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 12059 (intmax_t)time_uptime - io->io_hdr.start_time); 12060 sbuf_finish(&sb); 12061 printf("%s", sbuf_data(&sb)); 12062 } 12063#endif /* CTL_TIME_IO */ 12064 12065#ifdef CTL_IO_DELAY 12066 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12067 struct ctl_lun *lun; 12068 12069 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12070 12071 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12072 } else { 12073 struct ctl_lun *lun; 12074 12075 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12076 if ((lun != NULL) 12077 && (lun->delay_info.datamove_delay > 0)) { 12078 struct callout *callout; 12079 12080 callout = (struct callout *)&io->io_hdr.timer_bytes; 12081 callout_init(callout, /*mpsafe*/ 1); 12082 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12083 callout_reset(callout, 12084 lun->delay_info.datamove_delay * hz, 12085 ctl_datamove_timer_wakeup, io); 12086 if (lun->delay_info.datamove_type == 12087 CTL_DELAY_TYPE_ONESHOT) 12088 lun->delay_info.datamove_delay = 0; 12089 return; 12090 } 12091 } 12092#endif 12093 12094 /* 12095 * This command has been aborted. Set the port status, so we fail 12096 * the data move. 12097 */ 12098 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12099 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 12100 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 12101 io->io_hdr.nexus.targ_port, 12102 (uintmax_t)io->io_hdr.nexus.targ_target.id, 12103 io->io_hdr.nexus.targ_lun); 12104 io->io_hdr.status = CTL_CMD_ABORTED; 12105 io->io_hdr.port_status = 31337; 12106 /* 12107 * Note that the backend, in this case, will get the 12108 * callback in its context. In other cases it may get 12109 * called in the frontend's interrupt thread context. 12110 */ 12111 io->scsiio.be_move_done(io); 12112 return; 12113 } 12114 12115 /* 12116 * If we're in XFER mode and this I/O is from the other shelf 12117 * controller, we need to send the DMA to the other side to 12118 * actually transfer the data to/from the host. In serialize only 12119 * mode the transfer happens below CTL and ctl_datamove() is only 12120 * called on the machine that originally received the I/O. 12121 */ 12122 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12123 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12124 union ctl_ha_msg msg; 12125 uint32_t sg_entries_sent; 12126 int do_sg_copy; 12127 int i; 12128 12129 memset(&msg, 0, sizeof(msg)); 12130 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12131 msg.hdr.original_sc = io->io_hdr.original_sc; 12132 msg.hdr.serializing_sc = io; 12133 msg.hdr.nexus = io->io_hdr.nexus; 12134 msg.dt.flags = io->io_hdr.flags; 12135 /* 12136 * We convert everything into a S/G list here. We can't 12137 * pass by reference, only by value between controllers. 12138 * So we can't pass a pointer to the S/G list, only as many 12139 * S/G entries as we can fit in here. If it's possible for 12140 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12141 * then we need to break this up into multiple transfers. 12142 */ 12143 if (io->scsiio.kern_sg_entries == 0) { 12144 msg.dt.kern_sg_entries = 1; 12145 /* 12146 * If this is in cached memory, flush the cache 12147 * before we send the DMA request to the other 12148 * controller. We want to do this in either the 12149 * read or the write case. The read case is 12150 * straightforward. In the write case, we want to 12151 * make sure nothing is in the local cache that 12152 * could overwrite the DMAed data. 12153 */ 12154 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12155 /* 12156 * XXX KDM use bus_dmamap_sync() here. 12157 */ 12158 } 12159 12160 /* 12161 * Convert to a physical address if this is a 12162 * virtual address. 12163 */ 12164 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12165 msg.dt.sg_list[0].addr = 12166 io->scsiio.kern_data_ptr; 12167 } else { 12168 /* 12169 * XXX KDM use busdma here! 12170 */ 12171#if 0 12172 msg.dt.sg_list[0].addr = (void *) 12173 vtophys(io->scsiio.kern_data_ptr); 12174#endif 12175 } 12176 12177 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12178 do_sg_copy = 0; 12179 } else { 12180 struct ctl_sg_entry *sgl; 12181 12182 do_sg_copy = 1; 12183 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12184 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12185 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12186 /* 12187 * XXX KDM use bus_dmamap_sync() here. 12188 */ 12189 } 12190 } 12191 12192 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12193 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12194 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12195 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12196 msg.dt.sg_sequence = 0; 12197 12198 /* 12199 * Loop until we've sent all of the S/G entries. On the 12200 * other end, we'll recompose these S/G entries into one 12201 * contiguous list before passing it to the 12202 */ 12203 for (sg_entries_sent = 0; sg_entries_sent < 12204 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12205 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12206 sizeof(msg.dt.sg_list[0])), 12207 msg.dt.kern_sg_entries - sg_entries_sent); 12208 12209 if (do_sg_copy != 0) { 12210 struct ctl_sg_entry *sgl; 12211 int j; 12212 12213 sgl = (struct ctl_sg_entry *) 12214 io->scsiio.kern_data_ptr; 12215 /* 12216 * If this is in cached memory, flush the cache 12217 * before we send the DMA request to the other 12218 * controller. We want to do this in either 12219 * the * read or the write case. The read 12220 * case is straightforward. In the write 12221 * case, we want to make sure nothing is 12222 * in the local cache that could overwrite 12223 * the DMAed data. 12224 */ 12225 12226 for (i = sg_entries_sent, j = 0; 12227 i < msg.dt.cur_sg_entries; i++, j++) { 12228 if ((io->io_hdr.flags & 12229 CTL_FLAG_NO_DATASYNC) == 0) { 12230 /* 12231 * XXX KDM use bus_dmamap_sync() 12232 */ 12233 } 12234 if ((io->io_hdr.flags & 12235 CTL_FLAG_BUS_ADDR) == 0) { 12236 /* 12237 * XXX KDM use busdma. 12238 */ 12239#if 0 12240 msg.dt.sg_list[j].addr =(void *) 12241 vtophys(sgl[i].addr); 12242#endif 12243 } else { 12244 msg.dt.sg_list[j].addr = 12245 sgl[i].addr; 12246 } 12247 msg.dt.sg_list[j].len = sgl[i].len; 12248 } 12249 } 12250 12251 sg_entries_sent += msg.dt.cur_sg_entries; 12252 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12253 msg.dt.sg_last = 1; 12254 else 12255 msg.dt.sg_last = 0; 12256 12257 /* 12258 * XXX KDM drop and reacquire the lock here? 12259 */ 12260 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12261 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12262 /* 12263 * XXX do something here. 12264 */ 12265 } 12266 12267 msg.dt.sent_sg_entries = sg_entries_sent; 12268 } 12269 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12270 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12271 ctl_failover_io(io, /*have_lock*/ 0); 12272 12273 } else { 12274 12275 /* 12276 * Lookup the fe_datamove() function for this particular 12277 * front end. 12278 */ 12279 fe_datamove = 12280 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12281 12282 fe_datamove(io); 12283 } 12284} 12285 12286static void 12287ctl_send_datamove_done(union ctl_io *io, int have_lock) 12288{ 12289 union ctl_ha_msg msg; 12290 int isc_status; 12291 12292 memset(&msg, 0, sizeof(msg)); 12293 12294 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12295 msg.hdr.original_sc = io; 12296 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12297 msg.hdr.nexus = io->io_hdr.nexus; 12298 msg.hdr.status = io->io_hdr.status; 12299 msg.scsi.tag_num = io->scsiio.tag_num; 12300 msg.scsi.tag_type = io->scsiio.tag_type; 12301 msg.scsi.scsi_status = io->scsiio.scsi_status; 12302 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12303 sizeof(io->scsiio.sense_data)); 12304 msg.scsi.sense_len = io->scsiio.sense_len; 12305 msg.scsi.sense_residual = io->scsiio.sense_residual; 12306 msg.scsi.fetd_status = io->io_hdr.port_status; 12307 msg.scsi.residual = io->scsiio.residual; 12308 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12309 12310 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12311 ctl_failover_io(io, /*have_lock*/ have_lock); 12312 return; 12313 } 12314 12315 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12316 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12317 /* XXX do something if this fails */ 12318 } 12319 12320} 12321 12322/* 12323 * The DMA to the remote side is done, now we need to tell the other side 12324 * we're done so it can continue with its data movement. 12325 */ 12326static void 12327ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12328{ 12329 union ctl_io *io; 12330 12331 io = rq->context; 12332 12333 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12334 printf("%s: ISC DMA write failed with error %d", __func__, 12335 rq->ret); 12336 ctl_set_internal_failure(&io->scsiio, 12337 /*sks_valid*/ 1, 12338 /*retry_count*/ rq->ret); 12339 } 12340 12341 ctl_dt_req_free(rq); 12342 12343 /* 12344 * In this case, we had to malloc the memory locally. Free it. 12345 */ 12346 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12347 int i; 12348 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12349 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12350 } 12351 /* 12352 * The data is in local and remote memory, so now we need to send 12353 * status (good or back) back to the other side. 12354 */ 12355 ctl_send_datamove_done(io, /*have_lock*/ 0); 12356} 12357 12358/* 12359 * We've moved the data from the host/controller into local memory. Now we 12360 * need to push it over to the remote controller's memory. 12361 */ 12362static int 12363ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12364{ 12365 int retval; 12366 12367 retval = 0; 12368 12369 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12370 ctl_datamove_remote_write_cb); 12371 12372 return (retval); 12373} 12374 12375static void 12376ctl_datamove_remote_write(union ctl_io *io) 12377{ 12378 int retval; 12379 void (*fe_datamove)(union ctl_io *io); 12380 12381 /* 12382 * - Get the data from the host/HBA into local memory. 12383 * - DMA memory from the local controller to the remote controller. 12384 * - Send status back to the remote controller. 12385 */ 12386 12387 retval = ctl_datamove_remote_sgl_setup(io); 12388 if (retval != 0) 12389 return; 12390 12391 /* Switch the pointer over so the FETD knows what to do */ 12392 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12393 12394 /* 12395 * Use a custom move done callback, since we need to send completion 12396 * back to the other controller, not to the backend on this side. 12397 */ 12398 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12399 12400 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12401 12402 fe_datamove(io); 12403 12404 return; 12405 12406} 12407 12408static int 12409ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12410{ 12411#if 0 12412 char str[256]; 12413 char path_str[64]; 12414 struct sbuf sb; 12415#endif 12416 12417 /* 12418 * In this case, we had to malloc the memory locally. Free it. 12419 */ 12420 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12421 int i; 12422 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12423 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12424 } 12425 12426#if 0 12427 scsi_path_string(io, path_str, sizeof(path_str)); 12428 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12429 sbuf_cat(&sb, path_str); 12430 scsi_command_string(&io->scsiio, NULL, &sb); 12431 sbuf_printf(&sb, "\n"); 12432 sbuf_cat(&sb, path_str); 12433 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12434 io->scsiio.tag_num, io->scsiio.tag_type); 12435 sbuf_cat(&sb, path_str); 12436 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12437 io->io_hdr.flags, io->io_hdr.status); 12438 sbuf_finish(&sb); 12439 printk("%s", sbuf_data(&sb)); 12440#endif 12441 12442 12443 /* 12444 * The read is done, now we need to send status (good or bad) back 12445 * to the other side. 12446 */ 12447 ctl_send_datamove_done(io, /*have_lock*/ 0); 12448 12449 return (0); 12450} 12451 12452static void 12453ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12454{ 12455 union ctl_io *io; 12456 void (*fe_datamove)(union ctl_io *io); 12457 12458 io = rq->context; 12459 12460 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12461 printf("%s: ISC DMA read failed with error %d", __func__, 12462 rq->ret); 12463 ctl_set_internal_failure(&io->scsiio, 12464 /*sks_valid*/ 1, 12465 /*retry_count*/ rq->ret); 12466 } 12467 12468 ctl_dt_req_free(rq); 12469 12470 /* Switch the pointer over so the FETD knows what to do */ 12471 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12472 12473 /* 12474 * Use a custom move done callback, since we need to send completion 12475 * back to the other controller, not to the backend on this side. 12476 */ 12477 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12478 12479 /* XXX KDM add checks like the ones in ctl_datamove? */ 12480 12481 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12482 12483 fe_datamove(io); 12484} 12485 12486static int 12487ctl_datamove_remote_sgl_setup(union ctl_io *io) 12488{ 12489 struct ctl_sg_entry *local_sglist, *remote_sglist; 12490 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12491 struct ctl_softc *softc; 12492 int retval; 12493 int i; 12494 12495 retval = 0; 12496 softc = control_softc; 12497 12498 local_sglist = io->io_hdr.local_sglist; 12499 local_dma_sglist = io->io_hdr.local_dma_sglist; 12500 remote_sglist = io->io_hdr.remote_sglist; 12501 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12502 12503 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12504 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12505 local_sglist[i].len = remote_sglist[i].len; 12506 12507 /* 12508 * XXX Detect the situation where the RS-level I/O 12509 * redirector on the other side has already read the 12510 * data off of the AOR RS on this side, and 12511 * transferred it to remote (mirror) memory on the 12512 * other side. Since we already have the data in 12513 * memory here, we just need to use it. 12514 * 12515 * XXX KDM this can probably be removed once we 12516 * get the cache device code in and take the 12517 * current AOR implementation out. 12518 */ 12519#ifdef NEEDTOPORT 12520 if ((remote_sglist[i].addr >= 12521 (void *)vtophys(softc->mirr->addr)) 12522 && (remote_sglist[i].addr < 12523 ((void *)vtophys(softc->mirr->addr) + 12524 CacheMirrorOffset))) { 12525 local_sglist[i].addr = remote_sglist[i].addr - 12526 CacheMirrorOffset; 12527 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12528 CTL_FLAG_DATA_IN) 12529 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12530 } else { 12531 local_sglist[i].addr = remote_sglist[i].addr + 12532 CacheMirrorOffset; 12533 } 12534#endif 12535#if 0 12536 printf("%s: local %p, remote %p, len %d\n", 12537 __func__, local_sglist[i].addr, 12538 remote_sglist[i].addr, local_sglist[i].len); 12539#endif 12540 } 12541 } else { 12542 uint32_t len_to_go; 12543 12544 /* 12545 * In this case, we don't have automatically allocated 12546 * memory for this I/O on this controller. This typically 12547 * happens with internal CTL I/O -- e.g. inquiry, mode 12548 * sense, etc. Anything coming from RAIDCore will have 12549 * a mirror area available. 12550 */ 12551 len_to_go = io->scsiio.kern_data_len; 12552 12553 /* 12554 * Clear the no datasync flag, we have to use malloced 12555 * buffers. 12556 */ 12557 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12558 12559 /* 12560 * The difficult thing here is that the size of the various 12561 * S/G segments may be different than the size from the 12562 * remote controller. That'll make it harder when DMAing 12563 * the data back to the other side. 12564 */ 12565 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12566 sizeof(io->io_hdr.remote_sglist[0])) && 12567 (len_to_go > 0); i++) { 12568 local_sglist[i].len = ctl_min(len_to_go, 131072); 12569 CTL_SIZE_8B(local_dma_sglist[i].len, 12570 local_sglist[i].len); 12571 local_sglist[i].addr = 12572 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12573 12574 local_dma_sglist[i].addr = local_sglist[i].addr; 12575 12576 if (local_sglist[i].addr == NULL) { 12577 int j; 12578 12579 printf("malloc failed for %zd bytes!", 12580 local_dma_sglist[i].len); 12581 for (j = 0; j < i; j++) { 12582 free(local_sglist[j].addr, M_CTL); 12583 } 12584 ctl_set_internal_failure(&io->scsiio, 12585 /*sks_valid*/ 1, 12586 /*retry_count*/ 4857); 12587 retval = 1; 12588 goto bailout_error; 12589 12590 } 12591 /* XXX KDM do we need a sync here? */ 12592 12593 len_to_go -= local_sglist[i].len; 12594 } 12595 /* 12596 * Reset the number of S/G entries accordingly. The 12597 * original number of S/G entries is available in 12598 * rem_sg_entries. 12599 */ 12600 io->scsiio.kern_sg_entries = i; 12601 12602#if 0 12603 printf("%s: kern_sg_entries = %d\n", __func__, 12604 io->scsiio.kern_sg_entries); 12605 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12606 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12607 local_sglist[i].addr, local_sglist[i].len, 12608 local_dma_sglist[i].len); 12609#endif 12610 } 12611 12612 12613 return (retval); 12614 12615bailout_error: 12616 12617 ctl_send_datamove_done(io, /*have_lock*/ 0); 12618 12619 return (retval); 12620} 12621 12622static int 12623ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12624 ctl_ha_dt_cb callback) 12625{ 12626 struct ctl_ha_dt_req *rq; 12627 struct ctl_sg_entry *remote_sglist, *local_sglist; 12628 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12629 uint32_t local_used, remote_used, total_used; 12630 int retval; 12631 int i, j; 12632 12633 retval = 0; 12634 12635 rq = ctl_dt_req_alloc(); 12636 12637 /* 12638 * If we failed to allocate the request, and if the DMA didn't fail 12639 * anyway, set busy status. This is just a resource allocation 12640 * failure. 12641 */ 12642 if ((rq == NULL) 12643 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12644 ctl_set_busy(&io->scsiio); 12645 12646 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12647 12648 if (rq != NULL) 12649 ctl_dt_req_free(rq); 12650 12651 /* 12652 * The data move failed. We need to return status back 12653 * to the other controller. No point in trying to DMA 12654 * data to the remote controller. 12655 */ 12656 12657 ctl_send_datamove_done(io, /*have_lock*/ 0); 12658 12659 retval = 1; 12660 12661 goto bailout; 12662 } 12663 12664 local_sglist = io->io_hdr.local_sglist; 12665 local_dma_sglist = io->io_hdr.local_dma_sglist; 12666 remote_sglist = io->io_hdr.remote_sglist; 12667 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12668 local_used = 0; 12669 remote_used = 0; 12670 total_used = 0; 12671 12672 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12673 rq->ret = CTL_HA_STATUS_SUCCESS; 12674 rq->context = io; 12675 callback(rq); 12676 goto bailout; 12677 } 12678 12679 /* 12680 * Pull/push the data over the wire from/to the other controller. 12681 * This takes into account the possibility that the local and 12682 * remote sglists may not be identical in terms of the size of 12683 * the elements and the number of elements. 12684 * 12685 * One fundamental assumption here is that the length allocated for 12686 * both the local and remote sglists is identical. Otherwise, we've 12687 * essentially got a coding error of some sort. 12688 */ 12689 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12690 int isc_ret; 12691 uint32_t cur_len, dma_length; 12692 uint8_t *tmp_ptr; 12693 12694 rq->id = CTL_HA_DATA_CTL; 12695 rq->command = command; 12696 rq->context = io; 12697 12698 /* 12699 * Both pointers should be aligned. But it is possible 12700 * that the allocation length is not. They should both 12701 * also have enough slack left over at the end, though, 12702 * to round up to the next 8 byte boundary. 12703 */ 12704 cur_len = ctl_min(local_sglist[i].len - local_used, 12705 remote_sglist[j].len - remote_used); 12706 12707 /* 12708 * In this case, we have a size issue and need to decrease 12709 * the size, except in the case where we actually have less 12710 * than 8 bytes left. In that case, we need to increase 12711 * the DMA length to get the last bit. 12712 */ 12713 if ((cur_len & 0x7) != 0) { 12714 if (cur_len > 0x7) { 12715 cur_len = cur_len - (cur_len & 0x7); 12716 dma_length = cur_len; 12717 } else { 12718 CTL_SIZE_8B(dma_length, cur_len); 12719 } 12720 12721 } else 12722 dma_length = cur_len; 12723 12724 /* 12725 * If we had to allocate memory for this I/O, instead of using 12726 * the non-cached mirror memory, we'll need to flush the cache 12727 * before trying to DMA to the other controller. 12728 * 12729 * We could end up doing this multiple times for the same 12730 * segment if we have a larger local segment than remote 12731 * segment. That shouldn't be an issue. 12732 */ 12733 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12734 /* 12735 * XXX KDM use bus_dmamap_sync() here. 12736 */ 12737 } 12738 12739 rq->size = dma_length; 12740 12741 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12742 tmp_ptr += local_used; 12743 12744 /* Use physical addresses when talking to ISC hardware */ 12745 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12746 /* XXX KDM use busdma */ 12747#if 0 12748 rq->local = vtophys(tmp_ptr); 12749#endif 12750 } else 12751 rq->local = tmp_ptr; 12752 12753 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12754 tmp_ptr += remote_used; 12755 rq->remote = tmp_ptr; 12756 12757 rq->callback = NULL; 12758 12759 local_used += cur_len; 12760 if (local_used >= local_sglist[i].len) { 12761 i++; 12762 local_used = 0; 12763 } 12764 12765 remote_used += cur_len; 12766 if (remote_used >= remote_sglist[j].len) { 12767 j++; 12768 remote_used = 0; 12769 } 12770 total_used += cur_len; 12771 12772 if (total_used >= io->scsiio.kern_data_len) 12773 rq->callback = callback; 12774 12775 if ((rq->size & 0x7) != 0) { 12776 printf("%s: warning: size %d is not on 8b boundary\n", 12777 __func__, rq->size); 12778 } 12779 if (((uintptr_t)rq->local & 0x7) != 0) { 12780 printf("%s: warning: local %p not on 8b boundary\n", 12781 __func__, rq->local); 12782 } 12783 if (((uintptr_t)rq->remote & 0x7) != 0) { 12784 printf("%s: warning: remote %p not on 8b boundary\n", 12785 __func__, rq->local); 12786 } 12787#if 0 12788 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12789 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12790 rq->local, rq->remote, rq->size); 12791#endif 12792 12793 isc_ret = ctl_dt_single(rq); 12794 if (isc_ret == CTL_HA_STATUS_WAIT) 12795 continue; 12796 12797 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12798 rq->ret = CTL_HA_STATUS_SUCCESS; 12799 } else { 12800 rq->ret = isc_ret; 12801 } 12802 callback(rq); 12803 goto bailout; 12804 } 12805 12806bailout: 12807 return (retval); 12808 12809} 12810 12811static void 12812ctl_datamove_remote_read(union ctl_io *io) 12813{ 12814 int retval; 12815 int i; 12816 12817 /* 12818 * This will send an error to the other controller in the case of a 12819 * failure. 12820 */ 12821 retval = ctl_datamove_remote_sgl_setup(io); 12822 if (retval != 0) 12823 return; 12824 12825 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12826 ctl_datamove_remote_read_cb); 12827 if ((retval != 0) 12828 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12829 /* 12830 * Make sure we free memory if there was an error.. The 12831 * ctl_datamove_remote_xfer() function will send the 12832 * datamove done message, or call the callback with an 12833 * error if there is a problem. 12834 */ 12835 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12836 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12837 } 12838 12839 return; 12840} 12841 12842/* 12843 * Process a datamove request from the other controller. This is used for 12844 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12845 * first. Once that is complete, the data gets DMAed into the remote 12846 * controller's memory. For reads, we DMA from the remote controller's 12847 * memory into our memory first, and then move it out to the FETD. 12848 */ 12849static void 12850ctl_datamove_remote(union ctl_io *io) 12851{ 12852 struct ctl_softc *softc; 12853 12854 softc = control_softc; 12855 12856 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12857 12858 /* 12859 * Note that we look for an aborted I/O here, but don't do some of 12860 * the other checks that ctl_datamove() normally does. We don't 12861 * need to run the task queue, because this I/O is on the ISC 12862 * queue, which is executed by the work thread after the task queue. 12863 * We don't need to run the datamove delay code, since that should 12864 * have been done if need be on the other controller. 12865 */ 12866 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12867 12868 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12869 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12870 io->io_hdr.nexus.targ_port, 12871 io->io_hdr.nexus.targ_target.id, 12872 io->io_hdr.nexus.targ_lun); 12873 io->io_hdr.status = CTL_CMD_ABORTED; 12874 io->io_hdr.port_status = 31338; 12875 12876 ctl_send_datamove_done(io, /*have_lock*/ 0); 12877 12878 return; 12879 } 12880 12881 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12882 ctl_datamove_remote_write(io); 12883 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12884 ctl_datamove_remote_read(io); 12885 } else { 12886 union ctl_ha_msg msg; 12887 struct scsi_sense_data *sense; 12888 uint8_t sks[3]; 12889 int retry_count; 12890 12891 memset(&msg, 0, sizeof(msg)); 12892 12893 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12894 msg.hdr.status = CTL_SCSI_ERROR; 12895 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12896 12897 retry_count = 4243; 12898 12899 sense = &msg.scsi.sense_data; 12900 sks[0] = SSD_SCS_VALID; 12901 sks[1] = (retry_count >> 8) & 0xff; 12902 sks[2] = retry_count & 0xff; 12903 12904 /* "Internal target failure" */ 12905 scsi_set_sense_data(sense, 12906 /*sense_format*/ SSD_TYPE_NONE, 12907 /*current_error*/ 1, 12908 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12909 /*asc*/ 0x44, 12910 /*ascq*/ 0x00, 12911 /*type*/ SSD_ELEM_SKS, 12912 /*size*/ sizeof(sks), 12913 /*data*/ sks, 12914 SSD_ELEM_NONE); 12915 12916 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12917 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12918 ctl_failover_io(io, /*have_lock*/ 1); 12919 return; 12920 } 12921 12922 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12923 CTL_HA_STATUS_SUCCESS) { 12924 /* XXX KDM what to do if this fails? */ 12925 } 12926 return; 12927 } 12928 12929} 12930 12931static int 12932ctl_process_done(union ctl_io *io) 12933{ 12934 struct ctl_lun *lun; 12935 struct ctl_softc *ctl_softc; 12936 void (*fe_done)(union ctl_io *io); 12937 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12938 12939 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12940 12941 fe_done = 12942 control_softc->ctl_ports[targ_port]->fe_done; 12943 12944#ifdef CTL_TIME_IO 12945 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12946 char str[256]; 12947 char path_str[64]; 12948 struct sbuf sb; 12949 12950 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12951 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12952 12953 sbuf_cat(&sb, path_str); 12954 switch (io->io_hdr.io_type) { 12955 case CTL_IO_SCSI: 12956 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12957 sbuf_printf(&sb, "\n"); 12958 sbuf_cat(&sb, path_str); 12959 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12960 io->scsiio.tag_num, io->scsiio.tag_type); 12961 break; 12962 case CTL_IO_TASK: 12963 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12964 "Tag Type: %d\n", io->taskio.task_action, 12965 io->taskio.tag_num, io->taskio.tag_type); 12966 break; 12967 default: 12968 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12969 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12970 break; 12971 } 12972 sbuf_cat(&sb, path_str); 12973 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12974 (intmax_t)time_uptime - io->io_hdr.start_time); 12975 sbuf_finish(&sb); 12976 printf("%s", sbuf_data(&sb)); 12977 } 12978#endif /* CTL_TIME_IO */ 12979 12980 switch (io->io_hdr.io_type) { 12981 case CTL_IO_SCSI: 12982 break; 12983 case CTL_IO_TASK: 12984 if (bootverbose || verbose > 0) 12985 ctl_io_error_print(io, NULL); 12986 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12987 ctl_free_io(io); 12988 else 12989 fe_done(io); 12990 return (CTL_RETVAL_COMPLETE); 12991 break; 12992 default: 12993 printf("ctl_process_done: invalid io type %d\n", 12994 io->io_hdr.io_type); 12995 panic("ctl_process_done: invalid io type %d\n", 12996 io->io_hdr.io_type); 12997 break; /* NOTREACHED */ 12998 } 12999 13000 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13001 if (lun == NULL) { 13002 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 13003 io->io_hdr.nexus.targ_mapped_lun)); 13004 fe_done(io); 13005 goto bailout; 13006 } 13007 ctl_softc = lun->ctl_softc; 13008 13009 mtx_lock(&lun->lun_lock); 13010 13011 /* 13012 * Check to see if we have any errors to inject here. We only 13013 * inject errors for commands that don't already have errors set. 13014 */ 13015 if ((STAILQ_FIRST(&lun->error_list) != NULL) 13016 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 13017 ctl_inject_error(lun, io); 13018 13019 /* 13020 * XXX KDM how do we treat commands that aren't completed 13021 * successfully? 13022 * 13023 * XXX KDM should we also track I/O latency? 13024 */ 13025 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS && 13026 io->io_hdr.io_type == CTL_IO_SCSI) { 13027#ifdef CTL_TIME_IO 13028 struct bintime cur_bt; 13029#endif 13030 int type; 13031 13032 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 13033 CTL_FLAG_DATA_IN) 13034 type = CTL_STATS_READ; 13035 else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 13036 CTL_FLAG_DATA_OUT) 13037 type = CTL_STATS_WRITE; 13038 else 13039 type = CTL_STATS_NO_IO; 13040 13041 lun->stats.ports[targ_port].bytes[type] += 13042 io->scsiio.kern_total_len; 13043 lun->stats.ports[targ_port].operations[type]++; 13044#ifdef CTL_TIME_IO 13045 bintime_add(&lun->stats.ports[targ_port].dma_time[type], 13046 &io->io_hdr.dma_bt); 13047 lun->stats.ports[targ_port].num_dmas[type] += 13048 io->io_hdr.num_dmas; 13049 getbintime(&cur_bt); 13050 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13051 bintime_add(&lun->stats.ports[targ_port].time[type], &cur_bt); 13052#endif 13053 } 13054 13055 /* 13056 * Remove this from the OOA queue. 13057 */ 13058 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13059 13060 /* 13061 * Run through the blocked queue on this LUN and see if anything 13062 * has become unblocked, now that this transaction is done. 13063 */ 13064 ctl_check_blocked(lun); 13065 13066 /* 13067 * If the LUN has been invalidated, free it if there is nothing 13068 * left on its OOA queue. 13069 */ 13070 if ((lun->flags & CTL_LUN_INVALID) 13071 && TAILQ_EMPTY(&lun->ooa_queue)) { 13072 mtx_unlock(&lun->lun_lock); 13073 mtx_lock(&ctl_softc->ctl_lock); 13074 ctl_free_lun(lun); 13075 mtx_unlock(&ctl_softc->ctl_lock); 13076 } else 13077 mtx_unlock(&lun->lun_lock); 13078 13079 /* 13080 * If this command has been aborted, make sure we set the status 13081 * properly. The FETD is responsible for freeing the I/O and doing 13082 * whatever it needs to do to clean up its state. 13083 */ 13084 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13085 io->io_hdr.status = CTL_CMD_ABORTED; 13086 13087 /* 13088 * We print out status for every task management command. For SCSI 13089 * commands, we filter out any unit attention errors; they happen 13090 * on every boot, and would clutter up the log. Note: task 13091 * management commands aren't printed here, they are printed above, 13092 * since they should never even make it down here. 13093 */ 13094 switch (io->io_hdr.io_type) { 13095 case CTL_IO_SCSI: { 13096 int error_code, sense_key, asc, ascq; 13097 13098 sense_key = 0; 13099 13100 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13101 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13102 /* 13103 * Since this is just for printing, no need to 13104 * show errors here. 13105 */ 13106 scsi_extract_sense_len(&io->scsiio.sense_data, 13107 io->scsiio.sense_len, 13108 &error_code, 13109 &sense_key, 13110 &asc, 13111 &ascq, 13112 /*show_errors*/ 0); 13113 } 13114 13115 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13116 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13117 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13118 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13119 13120 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13121 ctl_softc->skipped_prints++; 13122 } else { 13123 uint32_t skipped_prints; 13124 13125 skipped_prints = ctl_softc->skipped_prints; 13126 13127 ctl_softc->skipped_prints = 0; 13128 ctl_softc->last_print_jiffies = time_uptime; 13129 13130 if (skipped_prints > 0) { 13131#ifdef NEEDTOPORT 13132 csevent_log(CSC_CTL | CSC_SHELF_SW | 13133 CTL_ERROR_REPORT, 13134 csevent_LogType_Trace, 13135 csevent_Severity_Information, 13136 csevent_AlertLevel_Green, 13137 csevent_FRU_Firmware, 13138 csevent_FRU_Unknown, 13139 "High CTL error volume, %d prints " 13140 "skipped", skipped_prints); 13141#endif 13142 } 13143 if (bootverbose || verbose > 0) 13144 ctl_io_error_print(io, NULL); 13145 } 13146 } 13147 break; 13148 } 13149 case CTL_IO_TASK: 13150 if (bootverbose || verbose > 0) 13151 ctl_io_error_print(io, NULL); 13152 break; 13153 default: 13154 break; 13155 } 13156 13157 /* 13158 * Tell the FETD or the other shelf controller we're done with this 13159 * command. Note that only SCSI commands get to this point. Task 13160 * management commands are completed above. 13161 * 13162 * We only send status to the other controller if we're in XFER 13163 * mode. In SER_ONLY mode, the I/O is done on the controller that 13164 * received the I/O (from CTL's perspective), and so the status is 13165 * generated there. 13166 * 13167 * XXX KDM if we hold the lock here, we could cause a deadlock 13168 * if the frontend comes back in in this context to queue 13169 * something. 13170 */ 13171 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13172 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13173 union ctl_ha_msg msg; 13174 13175 memset(&msg, 0, sizeof(msg)); 13176 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13177 msg.hdr.original_sc = io->io_hdr.original_sc; 13178 msg.hdr.nexus = io->io_hdr.nexus; 13179 msg.hdr.status = io->io_hdr.status; 13180 msg.scsi.scsi_status = io->scsiio.scsi_status; 13181 msg.scsi.tag_num = io->scsiio.tag_num; 13182 msg.scsi.tag_type = io->scsiio.tag_type; 13183 msg.scsi.sense_len = io->scsiio.sense_len; 13184 msg.scsi.sense_residual = io->scsiio.sense_residual; 13185 msg.scsi.residual = io->scsiio.residual; 13186 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13187 sizeof(io->scsiio.sense_data)); 13188 /* 13189 * We copy this whether or not this is an I/O-related 13190 * command. Otherwise, we'd have to go and check to see 13191 * whether it's a read/write command, and it really isn't 13192 * worth it. 13193 */ 13194 memcpy(&msg.scsi.lbalen, 13195 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13196 sizeof(msg.scsi.lbalen)); 13197 13198 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13199 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13200 /* XXX do something here */ 13201 } 13202 13203 ctl_free_io(io); 13204 } else 13205 fe_done(io); 13206 13207bailout: 13208 13209 return (CTL_RETVAL_COMPLETE); 13210} 13211 13212/* 13213 * Front end should call this if it doesn't do autosense. When the request 13214 * sense comes back in from the initiator, we'll dequeue this and send it. 13215 */ 13216int 13217ctl_queue_sense(union ctl_io *io) 13218{ 13219 struct ctl_lun *lun; 13220 struct ctl_softc *ctl_softc; 13221 uint32_t initidx, targ_lun; 13222 13223 ctl_softc = control_softc; 13224 13225 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13226 13227 /* 13228 * LUN lookup will likely move to the ctl_work_thread() once we 13229 * have our new queueing infrastructure (that doesn't put things on 13230 * a per-LUN queue initially). That is so that we can handle 13231 * things like an INQUIRY to a LUN that we don't have enabled. We 13232 * can't deal with that right now. 13233 */ 13234 mtx_lock(&ctl_softc->ctl_lock); 13235 13236 /* 13237 * If we don't have a LUN for this, just toss the sense 13238 * information. 13239 */ 13240 targ_lun = io->io_hdr.nexus.targ_lun; 13241 if (io->io_hdr.nexus.lun_map_fn != NULL) 13242 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13243 if ((targ_lun < CTL_MAX_LUNS) 13244 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13245 lun = ctl_softc->ctl_luns[targ_lun]; 13246 else 13247 goto bailout; 13248 13249 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13250 13251 mtx_lock(&lun->lun_lock); 13252 /* 13253 * Already have CA set for this LUN...toss the sense information. 13254 */ 13255 if (ctl_is_set(lun->have_ca, initidx)) { 13256 mtx_unlock(&lun->lun_lock); 13257 goto bailout; 13258 } 13259 13260 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13261 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13262 sizeof(io->scsiio.sense_data))); 13263 ctl_set_mask(lun->have_ca, initidx); 13264 mtx_unlock(&lun->lun_lock); 13265 13266bailout: 13267 mtx_unlock(&ctl_softc->ctl_lock); 13268 13269 ctl_free_io(io); 13270 13271 return (CTL_RETVAL_COMPLETE); 13272} 13273 13274/* 13275 * Primary command inlet from frontend ports. All SCSI and task I/O 13276 * requests must go through this function. 13277 */ 13278int 13279ctl_queue(union ctl_io *io) 13280{ 13281 struct ctl_softc *ctl_softc; 13282 13283 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13284 13285 ctl_softc = control_softc; 13286 13287#ifdef CTL_TIME_IO 13288 io->io_hdr.start_time = time_uptime; 13289 getbintime(&io->io_hdr.start_bt); 13290#endif /* CTL_TIME_IO */ 13291 13292 /* Map FE-specific LUN ID into global one. */ 13293 if (io->io_hdr.nexus.lun_map_fn != NULL) 13294 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.lun_map_fn( 13295 io->io_hdr.nexus.lun_map_arg, io->io_hdr.nexus.targ_lun); 13296 else 13297 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.targ_lun; 13298 13299 switch (io->io_hdr.io_type) { 13300 case CTL_IO_SCSI: 13301 case CTL_IO_TASK: 13302 ctl_enqueue_incoming(io); 13303 break; 13304 default: 13305 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13306 return (EINVAL); 13307 } 13308 13309 return (CTL_RETVAL_COMPLETE); 13310} 13311 13312#ifdef CTL_IO_DELAY 13313static void 13314ctl_done_timer_wakeup(void *arg) 13315{ 13316 union ctl_io *io; 13317 13318 io = (union ctl_io *)arg; 13319 ctl_done(io); 13320} 13321#endif /* CTL_IO_DELAY */ 13322 13323void 13324ctl_done(union ctl_io *io) 13325{ 13326 struct ctl_softc *ctl_softc; 13327 13328 ctl_softc = control_softc; 13329 13330 /* 13331 * Enable this to catch duplicate completion issues. 13332 */ 13333#if 0 13334 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13335 printf("%s: type %d msg %d cdb %x iptl: " 13336 "%d:%d:%d:%d tag 0x%04x " 13337 "flag %#x status %x\n", 13338 __func__, 13339 io->io_hdr.io_type, 13340 io->io_hdr.msg_type, 13341 io->scsiio.cdb[0], 13342 io->io_hdr.nexus.initid.id, 13343 io->io_hdr.nexus.targ_port, 13344 io->io_hdr.nexus.targ_target.id, 13345 io->io_hdr.nexus.targ_lun, 13346 (io->io_hdr.io_type == 13347 CTL_IO_TASK) ? 13348 io->taskio.tag_num : 13349 io->scsiio.tag_num, 13350 io->io_hdr.flags, 13351 io->io_hdr.status); 13352 } else 13353 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13354#endif 13355 13356 /* 13357 * This is an internal copy of an I/O, and should not go through 13358 * the normal done processing logic. 13359 */ 13360 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) 13361 return; 13362 13363 /* 13364 * We need to send a msg to the serializing shelf to finish the IO 13365 * as well. We don't send a finish message to the other shelf if 13366 * this is a task management command. Task management commands 13367 * aren't serialized in the OOA queue, but rather just executed on 13368 * both shelf controllers for commands that originated on that 13369 * controller. 13370 */ 13371 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13372 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13373 union ctl_ha_msg msg_io; 13374 13375 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13376 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13377 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13378 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13379 } 13380 /* continue on to finish IO */ 13381 } 13382#ifdef CTL_IO_DELAY 13383 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13384 struct ctl_lun *lun; 13385 13386 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13387 13388 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13389 } else { 13390 struct ctl_lun *lun; 13391 13392 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13393 13394 if ((lun != NULL) 13395 && (lun->delay_info.done_delay > 0)) { 13396 struct callout *callout; 13397 13398 callout = (struct callout *)&io->io_hdr.timer_bytes; 13399 callout_init(callout, /*mpsafe*/ 1); 13400 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13401 callout_reset(callout, 13402 lun->delay_info.done_delay * hz, 13403 ctl_done_timer_wakeup, io); 13404 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13405 lun->delay_info.done_delay = 0; 13406 return; 13407 } 13408 } 13409#endif /* CTL_IO_DELAY */ 13410 13411 ctl_enqueue_done(io); 13412} 13413 13414int 13415ctl_isc(struct ctl_scsiio *ctsio) 13416{ 13417 struct ctl_lun *lun; 13418 int retval; 13419 13420 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13421 13422 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13423 13424 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13425 13426 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13427 13428 return (retval); 13429} 13430 13431 13432static void 13433ctl_work_thread(void *arg) 13434{ 13435 struct ctl_thread *thr = (struct ctl_thread *)arg; 13436 struct ctl_softc *softc = thr->ctl_softc; 13437 union ctl_io *io; 13438 int retval; 13439 13440 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13441 13442 for (;;) { 13443 retval = 0; 13444 13445 /* 13446 * We handle the queues in this order: 13447 * - ISC 13448 * - done queue (to free up resources, unblock other commands) 13449 * - RtR queue 13450 * - incoming queue 13451 * 13452 * If those queues are empty, we break out of the loop and 13453 * go to sleep. 13454 */ 13455 mtx_lock(&thr->queue_lock); 13456 io = (union ctl_io *)STAILQ_FIRST(&thr->isc_queue); 13457 if (io != NULL) { 13458 STAILQ_REMOVE_HEAD(&thr->isc_queue, links); 13459 mtx_unlock(&thr->queue_lock); 13460 ctl_handle_isc(io); 13461 continue; 13462 } 13463 io = (union ctl_io *)STAILQ_FIRST(&thr->done_queue); 13464 if (io != NULL) { 13465 STAILQ_REMOVE_HEAD(&thr->done_queue, links); 13466 /* clear any blocked commands, call fe_done */ 13467 mtx_unlock(&thr->queue_lock); 13468 retval = ctl_process_done(io); 13469 continue; 13470 } 13471 io = (union ctl_io *)STAILQ_FIRST(&thr->incoming_queue); 13472 if (io != NULL) { 13473 STAILQ_REMOVE_HEAD(&thr->incoming_queue, links); 13474 mtx_unlock(&thr->queue_lock); 13475 if (io->io_hdr.io_type == CTL_IO_TASK) 13476 ctl_run_task(io); 13477 else 13478 ctl_scsiio_precheck(softc, &io->scsiio); 13479 continue; 13480 } 13481 if (!ctl_pause_rtr) { 13482 io = (union ctl_io *)STAILQ_FIRST(&thr->rtr_queue); 13483 if (io != NULL) { 13484 STAILQ_REMOVE_HEAD(&thr->rtr_queue, links); 13485 mtx_unlock(&thr->queue_lock); 13486 retval = ctl_scsiio(&io->scsiio); 13487 if (retval != CTL_RETVAL_COMPLETE) 13488 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13489 continue; 13490 } 13491 } 13492 13493 /* Sleep until we have something to do. */ 13494 mtx_sleep(thr, &thr->queue_lock, PDROP | PRIBIO, "-", 0); 13495 } 13496} 13497 13498static void 13499ctl_lun_thread(void *arg) 13500{ 13501 struct ctl_softc *softc = (struct ctl_softc *)arg; 13502 struct ctl_be_lun *be_lun; 13503 int retval; 13504 13505 CTL_DEBUG_PRINT(("ctl_lun_thread starting\n")); 13506 13507 for (;;) { 13508 retval = 0; 13509 mtx_lock(&softc->ctl_lock); 13510 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13511 if (be_lun != NULL) { 13512 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13513 mtx_unlock(&softc->ctl_lock); 13514 ctl_create_lun(be_lun); 13515 continue; 13516 } 13517 13518 /* Sleep until we have something to do. */ 13519 mtx_sleep(&softc->pending_lun_queue, &softc->ctl_lock, 13520 PDROP | PRIBIO, "-", 0); 13521 } 13522} 13523 13524static void 13525ctl_enqueue_incoming(union ctl_io *io) 13526{ 13527 struct ctl_softc *softc = control_softc; 13528 struct ctl_thread *thr; 13529 u_int idx; 13530 13531 idx = (io->io_hdr.nexus.targ_port * 127 + 13532 io->io_hdr.nexus.initid.id) % worker_threads; 13533 thr = &softc->threads[idx]; 13534 mtx_lock(&thr->queue_lock); 13535 STAILQ_INSERT_TAIL(&thr->incoming_queue, &io->io_hdr, links); 13536 mtx_unlock(&thr->queue_lock); 13537 wakeup(thr); 13538} 13539 13540static void 13541ctl_enqueue_rtr(union ctl_io *io) 13542{ 13543 struct ctl_softc *softc = control_softc; 13544 struct ctl_thread *thr; 13545 13546 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13547 mtx_lock(&thr->queue_lock); 13548 STAILQ_INSERT_TAIL(&thr->rtr_queue, &io->io_hdr, links); 13549 mtx_unlock(&thr->queue_lock); 13550 wakeup(thr); 13551} 13552 13553static void 13554ctl_enqueue_done(union ctl_io *io) 13555{ 13556 struct ctl_softc *softc = control_softc; 13557 struct ctl_thread *thr; 13558 13559 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13560 mtx_lock(&thr->queue_lock); 13561 STAILQ_INSERT_TAIL(&thr->done_queue, &io->io_hdr, links); 13562 mtx_unlock(&thr->queue_lock); 13563 wakeup(thr); 13564} 13565 13566static void 13567ctl_enqueue_isc(union ctl_io *io) 13568{ 13569 struct ctl_softc *softc = control_softc; 13570 struct ctl_thread *thr; 13571 13572 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13573 mtx_lock(&thr->queue_lock); 13574 STAILQ_INSERT_TAIL(&thr->isc_queue, &io->io_hdr, links); 13575 mtx_unlock(&thr->queue_lock); 13576 wakeup(thr); 13577} 13578 13579/* Initialization and failover */ 13580 13581void 13582ctl_init_isc_msg(void) 13583{ 13584 printf("CTL: Still calling this thing\n"); 13585} 13586 13587/* 13588 * Init component 13589 * Initializes component into configuration defined by bootMode 13590 * (see hasc-sv.c) 13591 * returns hasc_Status: 13592 * OK 13593 * ERROR - fatal error 13594 */ 13595static ctl_ha_comp_status 13596ctl_isc_init(struct ctl_ha_component *c) 13597{ 13598 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13599 13600 c->status = ret; 13601 return ret; 13602} 13603 13604/* Start component 13605 * Starts component in state requested. If component starts successfully, 13606 * it must set its own state to the requestrd state 13607 * When requested state is HASC_STATE_HA, the component may refine it 13608 * by adding _SLAVE or _MASTER flags. 13609 * Currently allowed state transitions are: 13610 * UNKNOWN->HA - initial startup 13611 * UNKNOWN->SINGLE - initial startup when no parter detected 13612 * HA->SINGLE - failover 13613 * returns ctl_ha_comp_status: 13614 * OK - component successfully started in requested state 13615 * FAILED - could not start the requested state, failover may 13616 * be possible 13617 * ERROR - fatal error detected, no future startup possible 13618 */ 13619static ctl_ha_comp_status 13620ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13621{ 13622 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13623 13624 printf("%s: go\n", __func__); 13625 13626 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13627 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13628 ctl_is_single = 0; 13629 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13630 != CTL_HA_STATUS_SUCCESS) { 13631 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13632 ret = CTL_HA_COMP_STATUS_ERROR; 13633 } 13634 } else if (CTL_HA_STATE_IS_HA(c->state) 13635 && CTL_HA_STATE_IS_SINGLE(state)){ 13636 // HA->SINGLE transition 13637 ctl_failover(); 13638 ctl_is_single = 1; 13639 } else { 13640 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13641 c->state, state); 13642 ret = CTL_HA_COMP_STATUS_ERROR; 13643 } 13644 if (CTL_HA_STATE_IS_SINGLE(state)) 13645 ctl_is_single = 1; 13646 13647 c->state = state; 13648 c->status = ret; 13649 return ret; 13650} 13651 13652/* 13653 * Quiesce component 13654 * The component must clear any error conditions (set status to OK) and 13655 * prepare itself to another Start call 13656 * returns ctl_ha_comp_status: 13657 * OK 13658 * ERROR 13659 */ 13660static ctl_ha_comp_status 13661ctl_isc_quiesce(struct ctl_ha_component *c) 13662{ 13663 int ret = CTL_HA_COMP_STATUS_OK; 13664 13665 ctl_pause_rtr = 1; 13666 c->status = ret; 13667 return ret; 13668} 13669 13670struct ctl_ha_component ctl_ha_component_ctlisc = 13671{ 13672 .name = "CTL ISC", 13673 .state = CTL_HA_STATE_UNKNOWN, 13674 .init = ctl_isc_init, 13675 .start = ctl_isc_start, 13676 .quiesce = ctl_isc_quiesce 13677}; 13678 13679/* 13680 * vim: ts=8 13681 */ 13682